WO2016047664A1 - プロポフォール含有水中油型エマルション組成物及びその製造方法 - Google Patents
プロポフォール含有水中油型エマルション組成物及びその製造方法 Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
- A61K9/107—Emulsions ; Emulsion preconcentrates; Micelles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/10—Dispersions; Emulsions
- A61K9/107—Emulsions ; Emulsion preconcentrates; Micelles
- A61K9/1075—Microemulsions or submicron emulsions; Preconcentrates or solids thereof; Micelles, e.g. made of phospholipids or block copolymers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/045—Hydroxy compounds, e.g. alcohols; Salts thereof, e.g. alcoholates
- A61K31/05—Phenols
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
- A61K47/12—Carboxylic acids; Salts or anhydrides thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/08—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing oxygen, e.g. ethers, acetals, ketones, quinones, aldehydes, peroxides
- A61K47/14—Esters of carboxylic acids, e.g. fatty acid monoglycerides, medium-chain triglycerides, parabens or PEG fatty acid esters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/16—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing nitrogen, e.g. nitro-, nitroso-, azo-compounds, nitriles, cyanates
- A61K47/18—Amines; Amides; Ureas; Quaternary ammonium compounds; Amino acids; Oligopeptides having up to five amino acids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/20—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing sulfur, e.g. dimethyl sulfoxide [DMSO], docusate, sodium lauryl sulfate or aminosulfonic acids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/06—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite
- A61K47/24—Organic compounds, e.g. natural or synthetic hydrocarbons, polyolefins, mineral oil, petrolatum or ozokerite containing atoms other than carbon, hydrogen, oxygen, halogen, nitrogen or sulfur, e.g. cyclomethicone or phospholipids
Definitions
- the present invention relates to a propofol-containing oil-in-water emulsion composition having excellent stability and a method for producing the same.
- Propofol (chemical name 2,6-diisopropylphenol) has features such as rapid induction of anesthesia, rapid arousal, less nausea such as nausea and vomiting after awakening, etc. As a sedative, it is widely used for sedation in surgical operations and intensive care units.
- Patent document 1 describes an aqueous pharmaceutical composition comprising propofol and one or more excipients, more specifically a block copolymer, polyethylene glycol (PEG) and 2,6-diisopropylphenol.
- An aqueous propofol formulation containing is described.
- Patent Document 2 discloses an aqueous anesthetic composition suitable for parenteral administration, which comprises propofol, 2-hydroxypropyl- ⁇ -cyclodextrin and a local anesthetic lignocaine or a salt thereof with an acid. Things are listed.
- the content in the emulsion is selected from the group consisting of a phospholipid of 10% w / v or less, a PEG emulsifier of 30% w / v or less, and a poloxamer substance of 10% w / v or less.
- a composite emulsifier containing two or more types of emulsifiers is described, and Example 25 describes a propofol emulsion.
- Patent Document 1 Since the prescription of Patent Document 1 is an aqueous propofol prescription, it is necessary to use a large amount of a surfactant, and there are concerns about side effects and toxicity. Moreover, in the Example of patent document 1, although stability is evaluated in a glass container, when the aqueous propofol formulation of patent document 1 is filled in a plastic container in which the preparation filled more easily than the glass container is likely to be unstable In this case, it is assumed that the stability is not sufficient.
- Patent Document 2 is also an aqueous anesthetic composition and uses a large amount of cyclodextrin, so there are concerns about side effects and toxicity. Moreover, since the stability evaluation in the Example of patent document 2 is also performed using the glass vial, it is unknown whether it has sufficient stability especially when filled in a plastic container. Moreover, in patent document 2, the effect of an antioxidant and a buffering agent is not shown clearly, and it is only described that stability of a formulation improves by keeping weak acidity.
- the propofol emulsion described in Example 25 of Patent Document 3 contains tocopherol (VE) as an antioxidant (Formulations 2 and 4 in Table 16 of Patent Document 3), but uses a large amount of emulsifier, causing side effects and toxicity. There are concerns. Moreover, in order to confirm the stability as a propofol emulsion, evaluation was carried out at 40 ° C. for 10 days. However, there is no description regarding the stability of propofol itself, and it is assumed that the stability is not sufficient.
- Propofol has low stability with respect to heat and time, and the stability may be significantly reduced depending on the type of container.
- An object of the present invention is to provide a propofol-containing oil-in-water emulsion composition having no side effects or toxicity and having high stability even when filled in a plastic container, and a method for producing the same. .
- the inventors of the present invention contain at least one selected from the group consisting of trishydroxymethylaminomethane, phosphoric acid and triethanolamine in the propofol-containing oil-in-water emulsion composition.
- the dissolved oxygen concentration to 5 mg / L or less and the average particle size of the emulsion to 180 nm or less
- a propofol-containing oil-in-water emulsion composition having high stability even when filled in a plastic container can be provided.
- the present invention has been completed.
- a propofol-containing oil-in-water emulsion composition comprising at least one selected from the group consisting of trishydroxymethylaminomethane, phosphoric acid, and triethanolamine, propofol, an oil component, an emulsifier, and water.
- a propofol-containing oil-in-water emulsion composition having a dissolved oxygen concentration of 5 mg / L or less and an average particle size of the emulsion of 180 nm or less.
- the propofol-containing oil-in-water emulsion composition according to (4) or (5) comprising trishydroxymethylaminomethane and a thiol antioxidant and citric acid or a salt thereof as an antioxidant.
- the propofol-containing oil-in-water emulsion composition according to (4) or (5) comprising trishydroxymethylaminomethane and a thiol-based antioxidant and ascorbic acid or a salt thereof as an antioxidant.
- a step of treating a composition containing propofol, an oil component, an emulsifier and water under a pressure condition of 200 MPa or more using a high-pressure homogenizer, and the resulting composition having a pore size of 0.22 ⁇ m or less The manufacturing method of the propofol containing oil-in-water emulsion composition in any one of (1) to (9) including the process of sterilizing by passing through a filter.
- a propofol-containing oil-in-water emulsion composition having high stability even when filled in a plastic container and a method for producing the same are provided.
- the propofol-containing oil-in-water emulsion composition may be simply referred to as “emulsion composition” or “composition”.
- emulsion composition when referring to the amount of each component in the composition, when there are a plurality of substances corresponding to each component in the composition, the plurality of the above-described components present in the composition unless otherwise specified. It means the total amount of substance.
- process is not limited to an independent process, and is included in this term if the intended action of this process is achieved even when it cannot be clearly distinguished from other processes. .
- a numerical range indicated by using “to” indicates a range including the numerical values described before and after “to” as the minimum value and the maximum value, respectively.
- w / v% used for the blending amount (concentration) of each component constituting the emulsion composition of the present invention is the mass (g) of each component relative to 100 mL of the volume (volume) of the total composition. Of 100% (the following formula 1a). Even when expressed in terms of mass relative to the total volume of the composition, unless otherwise specified, it means the mass (g) of each component with respect to 100 mL of the volume (volume) of the total composition. For example, the compounding quantity of the component mix
- “w / w%” used for the blending amount (concentration) of each component constituting the emulsion composition of the present invention is the mass of the reference substance of the mass (g) of each component. It means the 100 fraction of (g) (the following formula 1b).
- Formula 1a [Mass of each component (g) / Volume (volume) of total composition 100 mL] ⁇ 100 (%)
- Formula 1b [mass of each component (g) / mass of reference substance (g)] ⁇ 100 (%)
- the present invention will be described below.
- the propofol-containing oil-in-water emulsion composition of the present invention comprises at least one selected from the group consisting of trishydroxymethylaminomethane, phosphoric acid and triethanolamine, propofol, an oil component, an emulsifier, and water.
- the propofol-containing oil-in-water emulsion composition having a dissolved oxygen concentration of 5 mg / L or less and an average particle diameter of the emulsion of 180 nm or less.
- the emulsion composition of the present invention can achieve high stability of propofol even in a plastic container that is disadvantageous to the stability of propofol because it is expected to have high oxygen permeability.
- propofol is added by adding at least one selected from the group consisting of trishydroxymethylaminomethane, phosphoric acid, and triethanolamine as a buffer, and defining a dissolved oxygen concentration threshold value of 5 mg / L or less. It has been proved that the stability of is improved dramatically.
- An oil-in-water emulsion is a state in which finely dispersed droplets of the oil phase are surrounded by an emulsifier, and the outer phase is a continuous phase of the aqueous phase.
- the aqueous component and oily component are stably mixed by the action of the emulsifier. is doing.
- the dissolved oxygen concentration in the propofol-containing oil-in-water emulsion composition of the present invention is 5 mg / L or less. By setting the dissolved oxygen concentration within the above range, it is possible to suppress the decomposition of propofol even after a long time has elapsed.
- the dissolved oxygen concentration is preferably 1 mg / L or less, more preferably 0.1 mg / L or less, and still more preferably 0.01 mg / L or less.
- the lower limit value of the dissolved oxygen concentration is not particularly limited, but may be 0 mg / L or more, and may be 0 mg / L.
- the method for measuring the dissolved oxygen concentration can be measured by the diaphragm polarograph method.
- a voltage necessary for reducing oxygen that has permeated through the diaphragm is applied between the working electrode and the counter electrode using an external constant voltage device.
- KCl is used for the internal solution
- Ag / AgCl is used for the counter electrode
- the potential of the counter electrode does not change even if a slight current flows. That is, since it is not polarized, a constant applied voltage is always applied to the working electrode. By applying a constant applied voltage to the working electrode, a current proportional to the oxygen concentration flows.
- the dissolved oxygen concentration can be measured using a commercially available dissolved oxygen sensor, for example, an InLab (registered trademark) 605 dissolved oxygen sensor connected to a Seven Go Pro (manufactured by METTTLER TOLEDO).
- the temperature and pressure are preferably room temperature and atmospheric pressure, the temperature is preferably 20 to 30 ° C., and the pressure is more preferably atmospheric pressure.
- the average particle size of the emulsion in the propofol-containing oil-in-water emulsion composition of the present invention is 180 nm or less, preferably 160 nm or less, more preferably 140 nm or less.
- the average particle diameter of the emulsion is 180 nm or less, preferably 160 nm or less, more preferably 140 nm or less.
- the minimum of the average particle diameter of an emulsion is not specifically limited, Generally, it is 30 nm or more, Preferably it is 50 nm or more.
- the average particle size of the emulsion can be reduced by changing the conditions and composition in fine emulsification.
- the average particle size can be reduced by increasing the number of passes by increasing the pressure.
- it can be achieved by setting the emulsifier to 15 w / w% or more with respect to the oil component.
- the particle diameter of the emulsion can be measured with a commercially available particle size distribution meter or the like.
- Particle size distribution measurement methods include optical microscopy, confocal laser microscopy, electron microscopy, atomic force microscopy, static light scattering, laser diffraction, dynamic light scattering, centrifugal sedimentation, and electrical pulse measurement. Methods, chromatographic methods, ultrasonic attenuation methods and the like are known, and devices corresponding to the respective principles are commercially available.
- the average particle size of the emulsion was defined as the median size of the scattering intensity distribution obtained by the Contin method using a dynamic light scattering particle size distribution measuring device as the average particle size of the emulsion.
- the propofol-containing oil-in-water emulsion composition of the present invention can be provided in a form filled in a container.
- the material of the container is not particularly limited, and may be either a plastic container or a glass container, but is preferably a plastic container because of its low risk of breakage and light weight.
- the plastic container may be a plastic syringe, a plastic ampule, a plastic vial, or a plastic bag, but is preferably a plastic syringe.
- the tip portion When the container is a plastic syringe, after the emulsion composition sterilized by filtration is filled from the tip portion where the injection needle is mounted, the tip portion may be sealed with a rubber or plastic part. Moreover, after filling the emulsion composition sterilized by filtration from the plunger rod portion, the plunger rod portion may be sealed with a rubber or plastic gasket or plunger rod.
- the plastic syringe filled with the emulsion composition can be preferably used as a prefilled syringe preparation from the viewpoint of convenience and prevention of erroneous operation.
- the ampule can be manufactured by a so-called blow-fill seal system in which the plastic container is molded, and at the same time, the emulsion composition is filled into the container and the container is sealed immediately after filling.
- the ampoule manufactured by such a blow fill seal system is preferably made of semi-rigid plastic.
- the emulsion composition sterilized by filtration can be dispensed into the vial, and the opening can be sealed by combining a rubber stopper and, if desired, an aluminum cap or the like.
- the emulsion composition sterilized by filtration is aseptically filled into a sterilized plastic bag and sealed, or the emulsion composition is filled and sealed in the bag, and then the contents are put together.
- the entire container can be produced by a method such as sterilization according to a conventional method (for example, high-pressure steam sterilization method, hot water immersion sterilization method, hot water shower sterilization method, etc.).
- Propofol is a general name for 2,6-diisopropylphenol, and as described in, for example, Japanese Patent Application Laid-Open No. 2002-179562, a general anesthetic or a sedative is used in the pharmaceutical field. It is known that it can be used as such. The solubility of propofol in water is much lower when used at its effective dosage compared to other drugs with similar effective dosages.
- propofol is generally present in an amount of 0.1 w / v% to 5 w / v%, preferably 0.1 w / v% to 2 w, relative to the volume of the total emulsion composition.
- the mass of propofol relative to the mass of the oil component is preferably 1 w / w% to 50 w / w%, more preferably 5 w / w% to 35 w / w%.
- the emulsion composition of the present invention contains an oily component.
- the “oil component” widely means a component that is pharmaceutically acceptable and can constitute an oil phase in an oil-in-water emulsion composition.
- the oil component in the present invention include medium-chain fatty acid triglycerides; vegetable oils (that is, natural triglycerides), long-chain fatty acid triglycerides such as animal oils; mineral oils; synthetic oils; essential oils; Of the mixture.
- propofol is not included in the oily component in the present invention.
- the oily component in the present invention preferably contains a medium-chain fatty acid triglyceride from the viewpoint of alleviating vascular pain and solubility of propofol.
- the medium chain fatty acid triglyceride means an oil or fat having an average carbon number of 12 or less in the fatty acid chain constituting the triglyceride contained in the medium chain fatty acid triglyceride.
- the average carbon number of the fatty acid in the medium-chain fatty acid triglyceride is the number of carbon atoms (for example, caprylic acid in the fatty acid chain constituting the triglyceride contained in the medium-chain fatty acid triglyceride). 8 if present, and 10) if capric acid, the weighted average by the composition ratio of the constituent fatty acids.
- the medium-chain fatty acid triglyceride used in the present invention is not particularly limited to the constituent fatty acid, and examples thereof include fatty acids having 6 to 12 carbon atoms. These constituent fatty acids in the medium chain fatty acid triglyceride may be saturated or unsaturated. Preferably, the medium chain fatty acid triglycerides are mainly composed of saturated fatty acid triglycerides having 6 to 12 carbon atoms.
- the medium chain fatty acid triglyceride may be derived from natural vegetable oils or may be a synthetic fatty acid triglyceride. You may use these individually or in combination of 2 or more types.
- the medium chain fatty acid triglyceride may be used alone if the average carbon number of the constituent fatty acid chain is within the above-mentioned range, and two or more kinds of medium chain fatty acids having different average carbon numbers of the constituent fatty acid chain may be used. It may be a mixture of triglycerides. When two or more kinds of medium chain fatty acid triglycerides are mixed, the average number of carbon atoms of the constituent fatty acids may be within the above-described range as a whole of the mixture of medium chain fatty acid triglycerides.
- Examples of the medium chain fatty acid triglyceride that can be used in the present invention include those that conform to the standard of “medium chain fatty acid triglyceride” of “Pharmaceutical Additives Standard 2003 (Pharmaceutical Daily)”.
- Commercially available products of medium chain fatty acid triglycerides include “COCONARD” (registered trademark) (COCONARD TM, Kao Corporation), “ODO (registered trademark) TM” (Nisshin Oillio Co., Ltd.), and “Miglyol” (registered trademark). (Myglyol TM, SASOL) or “Panasate” (registered trademark) (Panasate TM, NOF Corporation).
- the content of the medium-chain fatty acid triglyceride in the present invention is 30 w / w% or more and 100 w / w% with respect to the total mass of the oil component from the viewpoint of alleviating vascular pain and dissolving a sufficient amount of propofol in the composition. Or less, more preferably 60 w / w% or more and 100 w / w% or less, and still more preferably 70 w / w% or more and 100 w / w% or less.
- the oily component in the present invention preferably contains long-chain fatty acid triglycerides from the viewpoint of use in injections and suppression of propofol degradation.
- the long-chain fatty acid triglyceride means an oil or fat in which the average carbon number of the fatty acid chain constituting the triglyceride contained in the long-chain fatty acid triglyceride is larger than 12.
- the fatty acid constituting the fatty acid chain may be a saturated fatty acid or an unsaturated fatty acid.
- Examples of long-chain fatty acid triglycerides include vegetable oils corresponding to natural triglycerides and chemically synthesized triglycerides.
- soybean oil is a vegetable oil obtained from the seeds of leguminous soybeans, and can be obtained from the seeds using a known extraction method or a known purification method. For example, those that meet the standards of “soybean oil” described in the Japanese Pharmacopoeia can be used.
- soybean oils examples include “Japanese Pharmacopoeia Soybean Oil” (Kaneda), “Soybean Oil YM” (Nisshin Oilio), SR-SOYBEAN-LQ- (JP) (Croda Japan) .
- Examples of chemically synthesized triglycerides include 2-linoleoyl-1,3-dioctanoylglycerol.
- the content of the long-chain fatty acid triglyceride is preferably 10 w / w% or more and less than 70 w / w% with respect to the total mass of the oil component, from the viewpoint of suppressing the decomposition of propofol.
- the oil component is composed of two components of the medium chain fatty acid triglyceride and the long chain fatty acid triglyceride. In this case, less than 40 w / w%, particularly more than 20 w / w% of the total mass of the oil component It is particularly preferred that it is less than 30 w / w%.
- these oily components can be used alone or in combination of two or more.
- each component used together does not need to be selected from the same group, such as vegetable oil, medium chain fatty acid triglyceride, animal oil, mineral oil, but can be selected from a different group. .
- the emulsion composition of the present invention contains an emulsifier to constitute an oil-in-water emulsion composition containing propofol.
- phospholipid can be used, and for example, natural phospholipid lecithin can be mentioned.
- lecithin include egg yolk lecithin, egg yolk phosphatidylcholine, soybean lecithin, soybean phosphatidylcholine, hydrogenated egg yolk lecithin hydrogenated with them, hydrogenated egg yolk phosphatidylcholine, hydrogenated soybean lecithin, hydrogenated soybean phosphatidylcholine and the like.
- the phospholipid is not limited to a natural component, and may be a chemically synthesized phospholipid.
- chemically synthesized phospholipids include phosphatidylcholine (dipalmitoylphosphatidylcholine, dimyristoylphosphatidylcholine, distearoylphosphatidylcholine, dioleoylphosphatidylcholine, etc.), phosphatidylglycerol (dipalmitoylphosphatidylglycerol, dimyristoylphosphatidylglycerol, distearoylphosphatidylglycerol, Oleoyl phosphatidylglycerol), phosphatidylethanolamine (dipalmitoyl phosphatidylethanolamine, dimyristoyl phosphatidylethanolamine, distearoyl phosphatidylethanolamine, dioleoylphosphatidylethanolamine, etc.).
- phospholipids can be used singly or in combination of two or more.
- egg yolk lecithin, egg yolk phosphatidylcholine, soybean lecithin and soybean phosphatidylcholine are more preferable from the viewpoint of biocompatibility, and egg yolk lecithin is particularly preferable.
- the oil component and the emulsifier are included in an amount that is 1.2 w / v% or more and 11.0 w / v% or less based on the total volume of the composition. Is preferred.
- This total amount of oily component and emulsifier is generally less than the total amount used as a propofol-containing oil-in-water emulsion composition. By setting it as such a total amount, the influence by a fat load, for example, generation
- the total content of the combination of the oil component and the emulsifier is more preferably 4.0 w / v% or more and 11.0 w / v% or less, and still more preferably 6.0 w / v%, based on the total volume of the composition. It is 10.0 w / v% or less. If it is 1.2 w / v% or more, a sufficient amount of propofol can be contained in the emulsion composition, and if it is 11.0 w / v% or less, the fat load can be sufficiently reduced, it is preferable.
- the content of the oil component in the emulsion composition is preferably such that the total amount of the emulsifier and the content of the emulsifier does not exceed 11.0 w / v% based on the total volume of the emulsion composition.
- it is preferably 1.0 to 10.0 w / v%, more preferably 1.0 to 9.0 w / v%, and 2.0 to 8.5 w / v%. Even more preferred is 3.0 to 7.0 w / v%.
- a sufficient concentration of drug can be contained in the emulsion composition, and if it is 11.0 w / v% or less, the stability of the emulsion composition is not impaired. Are preferred respectively.
- the content of the emulsifier is preferably such that the total amount with the content of the oil component does not exceed 11.0 w / v% based on the total volume of the composition, and 0.4% based on the total volume of the emulsion composition. It is preferably ⁇ 1.2 w / v%, more preferably 0.5 to 1.2 w / v%, and particularly preferably 0.6 to 1.2 w / v%. If it is 0.4 w / v% or more, the stability of the emulsion composition is sufficient, and if it is 1.2 w / v% or less, it does not correspond to overdose due to the occurrence of fat load, etc. There is little need to consider the effects of excessive overdose.
- the ratio of the emulsifier content to the oil component content is preferably 0.04 to 0.2, more preferably 0.06 to 0.2, and 0.1 to 0.2. Most preferably: If the mass ratio of the emulsifier to the oil component is 0.04 or more, the stability of the emulsion composition is sufficient, and if it is 0.2 or less, insoluble matter is unlikely to form when the emulsion composition is stored for a long period of time. Tend.
- the propofol-containing oil-in-water emulsion composition of the present invention is preferably 0.1 to 5 w / v% propofol, 0.1 to 2 w / v emulsifier, and 0.1 to 9.9 w / v oil component. % Can be included.
- the propofol-containing oil-in-water emulsion composition of the present invention further contains at least one selected from the group consisting of trishydroxymethylaminomethane, phosphoric acid and triethanolamine (hereinafter sometimes referred to as a buffer).
- the emulsion composition can achieve inhibition of propofol degradation by containing the buffer.
- the buffer it is more preferable to use trishydroxymethylaminomethane from the viewpoint of particle size and suppression of propofol degradation.
- trishydroxymethylaminomethane means trishydroxymethylaminomethane or a salt thereof.
- the salt of trishydroxymethylaminomethane include trishydroxymethylaminomethane hydrochloride.
- its content is preferably 0.005 w / v% or more and 0.5 w / v% or less with respect to the total capacity of the composition from the viewpoint of inhibiting the decomposition of propofol. More preferably, the content is 0.01 w / v% or more and 0.2 w / v% or less.
- phosphoric acid means phosphoric acid or a salt thereof.
- phosphoric acid it can be added as a phosphate (for example, disodium hydrogen phosphate, sodium dihydrogen phosphate, etc.), and the content mass as a phosphate is from the viewpoint of inhibiting decomposition of propofol,
- the content is preferably 0.01 w / v% or more and 1 w / v% or less, and more preferably 0.05 w / v% or more and 0.5 w / v% or less based on the total volume of the composition.
- triethanolamine means triethanolamine or a salt thereof.
- the triethanolamine salt include triethanolamine hydrochloride.
- the content is preferably 0.0005 w / v% or more and 0.05 w / v% or less based on the total volume of the composition from the viewpoint of inhibiting decomposition of propofol. More preferably, the content is not less than 001 w / v% and not more than 0.01 w / v%.
- the propofol-containing oil-in-water emulsion composition of the present invention preferably further contains an antioxidant, and is selected from the group consisting of citric acid or a salt thereof, ascorbic acid or a salt thereof, and a thiol antioxidant as the antioxidant. It is preferable to contain at least one of the above. More preferably, the antioxidant is a thiol antioxidant. By further including at least one selected from the group consisting of citric acid or a salt thereof, ascorbic acid or a salt thereof, and a thiol-based antioxidant (hereinafter, these may be collectively referred to as an antioxidant) The stability of propofol can be further improved.
- Patent Document 1 it is described that ascorbic acid degrades propofol. However, in contrast to the knowledge in Patent Document 1, propofol is decomposed by adding an appropriate amount of ascorbic acid. It was demonstrated that it can be suppressed.
- the salt of citric acid and the salt of ascorbic acid may be any salt that is pharmacologically acceptable, such as a salt of citric acid or ascorbic acid and an alkali metal, a salt of citric acid or ascorbic acid and an alkaline earth metal. And salts of citric acid or ascorbic acid with transition metals, salts of citric acid or ascorbic acid with basic ammonium, and the like. Specifically, alkali metal salts with sodium, potassium, etc., alkaline earth metal salts with calcium, magnesium, etc., transition metal salts with zinc, iron, cobalt, copper, etc., ammonium, triethanolamine, L-histidine And basic ammonium salts with L-arginine, L-lysine and the like.
- citric acid or ascorbic acid trisodium citrate, disodium citrate, sodium dihydrogen citrate, disodium hydrogen citrate, tripotassium citrate, dipotassium citrate, potassium dihydrogen citrate, citric acid
- dipotassium hydrogen sodium ascorbate, potassium ascorbate, magnesium ascorbate, calcium ascorbate, sodium ascorbate phosphate, and magnesium ascorbate phosphate.
- trisodium citrate and ascorbic acid are preferably used, but are not particularly limited.
- the thiol-based antioxidant is not particularly limited as long as it is a compound having a thiol group.
- thioglycerin, cysteine or a salt thereof, thioglycolic acid or a salt thereof, thiomalic acid or a salt thereof, glutathione, a cysteine residue examples include a polypeptide containing a group, methyl mercaptan, aminoethylthiol, N-acetyl-L-cysteine, 2-mercapto-ethanol, and dithioeerythritol.
- cysteine or a salt thereof, thioglycolic acid or a salt thereof, or thioglycerin is preferable from the viewpoint of inhibiting the decomposition of propofol.
- the salt of cysteine or thioglycolic acid may be any salt that is pharmacologically acceptable. Cysteine, salt of thioglycolic acid and alkali metal, cysteine, salt of thioglycolic acid and alkaline earth metal, cysteine And salts of thioglycolic acid and transition metals, cysteine, salts of thioglycolic acid and basic ammonium, and the like.
- examples of the cysteine salt include cysteine hydrochloride and the like
- examples of the thioglycolic acid salt include sodium thioglycolate and potassium thioglycolate.
- antioxidant a case where citric acid or a salt thereof and a thiol antioxidant are included in combination, and a case where an ascorbic acid or salt thereof and a thiol antioxidant are combined are preferable.
- the content of citric acid or a salt thereof is 1 w / v% or more and 40 w / v% as trisodium citrate dihydrate with respect to propofol from the viewpoint of inhibiting the degradation of propofol.
- the content is preferably 2% or less, and more preferably 2w / v% or more and 10w / v% or less. If it is 1 w / v% or more, it is possible to sufficiently obtain the effect of suppressing the degradation of propofol by citric acid or a salt thereof, and if it is 40 w / v% or less, there is almost no need to consider the influence of overdose. Are preferred respectively.
- 10 w / v% or less is preferable from a viewpoint of emulsion stability.
- the content mass of ascorbic acid or a salt thereof is 0.1 w / v% or more and 60 w / v% or less as proporof ascorbic acid with respect to propofol.
- the content is preferably 0.5 w / v% or more and 10 w / v% or less. If it is 0.1 w / v% or more, the inhibitory effect of propofol degradation by ascorbic acid or a salt thereof can be sufficiently obtained, and if it is 60 w / v% or less, there is almost no need to consider the influence of overdose. Therefore, each is preferable.
- 10 w / v% or less is preferable from a viewpoint of emulsion stability.
- the content of cysteine or a salt thereof is preferably 0.01 w / v% or more and 5 w / v% or less as cysteine hydrochloride with respect to propofol from the viewpoint of inhibiting the degradation of propofol. More preferably, the content is 0.1 w / v% or more and 4 w / v% or less. If it is 0.01 w / v% or more, the effect of inhibiting the degradation of propofol by cysteine or a salt thereof can be sufficiently obtained, and if it is 5 w / v% or less, there is almost no need to consider the influence of overdose. Each is preferable.
- the content of thioglycolic acid or a salt thereof is 0.01 w / v% or more and 0.5 w / v as sodium thioglycolate with respect to propofol from the viewpoint of inhibiting the decomposition of propofol.
- the content is preferably v% or less, more preferably 0.1 w / v% or more and 0.4 w / v% or less.
- the content of thioglycerin is preferably 0.01 w / v% or more and 1 w / v% or less as thioglycerin with respect to propofol, from the viewpoint of suppressing the degradation of propofol,
- the content is more preferably at least / v% and at most 0.8 w / v%. If it is 0.01 w / v% or more, the effect of suppressing the degradation of propofol by thioglycerin can be sufficiently obtained, and if it is 1 w / v% or less, there is almost no need to consider the influence of overdose. Each is preferred.
- the emulsion composition of the present invention is preferably a combination containing trishydroxymethylaminomethane and a thiol antioxidant as an antioxidant.
- trishydroxymethylaminomethane and a thiol antioxidant and citric acid or a salt thereof are included in combination as an antioxidant, trishydroxymethylaminomethane and thiol antioxidant and ascorbine as an antioxidant.
- a combination of an acid or a salt thereof is more preferable.
- the emulsion composition of the present invention can be further added and mixed with appropriate amounts of various additives known to be added and blended into this type of emulsion composition, if desired.
- the additive include an antibacterial agent, a pH adjuster, and an isotonic agent.
- antibacterial agents examples include sodium caprylate, methyl benzoate, sodium metabisulfite and the like.
- pH adjuster hydrochloric acid, acetic acid, lactic acid, malic acid, sodium hydroxide and the like can be used.
- tonicity agents include glycerin; sugars such as glucose, fructose and maltose; sugar alcohols such as sorbitol and xylitol; salts such as sodium chloride and magnesium chloride.
- oil-soluble substances can be used by being mixed in advance with oil-based components constituting the emulsion composition.
- the water-soluble substance can be mixed with water for injection or added and blended in the aqueous phase of the resulting emulsion.
- the absolute value of the zeta potential of the propofol-containing oil-in-water emulsion composition of the present invention is not particularly limited, but is preferably 30 mV or less, more preferably 20 mV or less.
- the zeta potential is generally performed by a method combining electrophoresis and light scattering, for example, an electrophoretic light scattering measurement method (laser Doppler method). In this method, an electric field is applied to the particles to move (electrophoresis) the particles, the moving particles are irradiated with laser, and the zeta potential is calculated by determining the migration speed from the change in the frequency of the irradiated light and scattered light. It is.
- the zeta potential can be measured by, for example, Nano-ZS manufactured by Malvern Co., Ltd. or a zeta potential measuring device ELS-8000 manufactured by Otsuka Electronics.
- the pH of the propofol-containing oil-in-water emulsion composition of the present invention is not particularly limited, but is usually pH 5.0 to 9.0, preferably pH 6.0 to 8.5.
- the propofol-containing oil-in-water emulsion composition of the present invention can be prepared by a method known in the art (emulsification dispersion method).
- the propofol-containing oil-in-water emulsion composition of the present invention is a step of treating a composition comprising propofol, an oil component, an emulsifier, and water under a pressure condition of 200 MPa or more using a high-pressure homogenizer. And it can manufacture by the process of sterilizing by passing the obtained composition through the filter of the hole diameter of 0.22 micrometer or less.
- emulsifying a crude emulsion obtained by mixing an aqueous phase and crude oil and roughly emulsifying the mixture using a suitable high-pressure emulsifier.
- the rough emulsification is more specifically described in, for example, T.I. K.
- a homomixer such as a homomixer, it can be carried out usually at 5000 rpm / min for 5 min or longer.
- An ultrasonic homogenizer can also be used.
- the fine emulsification can be performed using a high-pressure homogenizer, an ultrasonic homogenizer, or the like.
- a high-pressure homogenizer In the case of using a high-pressure homogenizer, it can be carried out generally by passing it under a pressure condition of about 150 MPa or more about 1 to 50 times, preferably about 1 to 20 times. These mixing and emulsification operations may be performed at room temperature, or may be performed by employing a slight cooling operation or heating operation.
- the emulsion composition of the present invention can be sterilized by filtration according to a conventional method after adjusting the pH as necessary to obtain a product.
- a method of filter sterilization for example, a known method using a filter may be applied.
- the material of the filter is not particularly limited, but is preferably cellulose acetate.
- As a general sterilization method there is, for example, high-pressure steam sterilization (for example, 121 ° C., 20 minutes), but in the present invention, the particle size is reduced and filtration sterilization is possible, so that propofol is decomposed by high-pressure steam sterilization. Can be avoided.
- the buffer may be added by adding at least one selected from the group consisting of trishydroxymethylaminomethane, phosphoric acid and triethanolamine to the composition containing propofol before rough emulsification, or after rough emulsification. It may be added, may be added to the composition after fine emulsification, or may be added to the composition after filter sterilization after sterilization in a state dissolved in water. Moreover, you may add at several time points, without adding at once. The addition of antioxidant is also similar to the addition of buffer.
- the propofol-containing oil-in-water emulsion composition of the present invention is an emulsion composition in which the decomposition of propofol is suppressed.
- the degradation inhibitory effect of propofol can be evaluated by, for example, detecting a propofol dimer body.
- the detection of the propofol dimer body can employ a known method, for example, can be detected by high performance liquid chromatography (HPLC) measurement.
- the aqueous phase was added and this was roughly emulsified with a homomixer (15000 rpm (rotation / min), 5 min). This was passed 5 times under the condition of 245 MPa using a high pressure emulsifier (Starburst Minilab, Sugino Machine). Thereafter, an additive was added, and the emulsion composition was prepared by adjusting the pH to 8.0 with 1 mol / L hydrochloric acid or 1 mol / L sodium hydroxide.
- Examples 1 to 14 and Comparative Example 2 were subjected to filter sterilization by allowing the produced emulsion composition to pass through Zaltoblanc P (Sartorius Stedim) under a nitrogen pressure of 0.2 MPa.
- the sterilized emulsion composition was stirred for 3 hours under a nitrogen atmosphere (less than 0.1 v / v% oxygen concentration in the gas), and dissolved in Inlab 605 connected to Seven Go Pro (METTLER TOLEDO). After confirming that the dissolved oxygen concentration was 0.1 mg / L or less by contacting the oxygen sensor, high pressure steam was used at 121 ° C. for 20 minutes using an autoclave (Autoclave SP200, Yamato Scientific Co., Ltd.). 1 ml of sterilized CZ syringe (manufactured by Daikyo Seiko) was filled. After filling, it was put in a lami zip (PET / AL) under a nitrogen atmosphere and heat sealed.
- PET / AL lami zip
- the emulsion composition was stirred for 3 hours under a nitrogen atmosphere, and the dissolved oxygen concentration was reduced to 0.1 mg / L or less by contacting the InLab 605 dissolved oxygen sensor connected to the Seven Go Pro. After confirming that it was filled, “Vial Bottle White V-NT 10 mL CS Siricoat” (manufactured by Fuji Glass Co., Ltd.) that had been autoclaved at 121 ° C. for 20 minutes using an autoclave was filled. The filled vials were autoclaved at 121 ° C. for 20 minutes using an autoclave.
- Comparative Example 1 the prepared emulsion composition was filled in a 1 ml CZ syringe that had been autoclaved at 121 ° C. for 20 minutes using an autoclave, and then autoclaved for 20 minutes at 121 ° C. using autoclave. Went.
- Examples 1 to 14 and Comparative Example 2 were stored in a thermostatic bath at 60 ° C. for 1 week in a state where they were sealed in a lami zip and subjected to a severe heat test.
- Examples 4 to 14 and Comparative Example 2 were stored in a thermostatic bath at 60 ° C. for 48 days in a state where they were sealed in a lami zip and subjected to a severe heat test.
- the evaluation criteria for the initial dimer mass (%) before storage are as follows. A: Less than 0.030% B: 0.030% or more and less than 0.085% C: 0.085% or more
- Evaluation criteria for the amount of dimer body (%) after severe test I are as follows. S: Less than 0.030% A: 0.030% or more and less than 0.085% B: 0.085% or more and less than 0.140% C: 0.140% or more
- the evaluation criteria for the amount of dimer body (%) after severe test II are as follows. S: Less than 0.080% A: 0.080% or more and less than 0.200% B: 0.200% or more and less than 0.500% C: 0.500% or more
- the evaluation criteria of the average particle diameter (nm) after severe test I are as follows. A: Less than 180 nm B: 180 nm or more and less than 300 nm C: 300 nm or more
- the evaluation criteria of the average particle diameter (nm) after severe test II are as follows. A: Less than 180 nm B: 180 nm or more and less than 1500 nm C: 1500 nm or more
- the evaluation criteria for coloring after severe test I are as follows. A: When the emulsion compositions before and after the severe test I are arranged, the color difference cannot be judged B: When the emulsion compositions before and after the severe test I are arranged, the color difference can be judged
- the evaluation criteria for coloring after severe test II are as follows. A: When the emulsion compositions before and after severe test II are arranged, the color difference cannot be judged B: When the emulsion compositions before and after severe test II are arranged, the color difference can be judged
- the addition of an antioxidant can suppress the increase in the dimer body after heat aging.
- the amount of dimer body is markedly suppressed by the combined use with Tris from the comparison between Examples 4 to 8 and Reference Examples 6, 7, 9, 11, and 13 shown below.
- a combination of an oxidizing agent and Tris is preferred.
- ascorbic acid although the coloring was seen, the inhibitory effect of the dimer body was confirmed. This is an unexpected result different from the description in Patent Document 1 (Japanese Patent Publication No. 2005-538191).
- Example 4 From the comparison between Example 4 and Examples 9 to 12, the combination of a plurality of antioxidants can suppress the dimer body. Further, in Examples 9 to 12, although the dimer body suppressing effect is high, the particle diameter does not increase as compared with Example 4, and therefore a combination of antioxidants is preferable. Combinations of these antioxidants include sodium citrate and cysteine hydrochloride, sodium citrate, cysteine hydrochloride and sodium thioglycolate, ascorbic acid, cysteine hydrochloride and sodium thioglycolate, sodium citrate, cysteine hydrochloride In the combination of alpha thioglycerin, favorable results can be obtained in all of the dimer body suppressing effect, the particle size after heat aging, and coloring.
- aqueous phase was added and this was roughly emulsified with a homomixer (15000 rpm (rotation / min), 5 min). This was passed 5 times under the condition of 245 MPa using a high pressure emulsifier (Starburst Minilab, Sugino Machine). Thereafter, an additive was added to prepare an emulsion composition.
- the prepared emulsion composition was sterilized by filtration in the same manner as in Examples 1 to 14 and Comparative Example 2, and stirred for 3 hours in a nitrogen atmosphere.
- the dissolved oxygen concentration was 0.1 mg / L or less (measurement temperature: room temperature, pressure).
- the thermal severe test I was conducted in the same manner as in Examples 1 to 14 and Comparative Example 2, and the stability was evaluated, the average particle diameter of the emulsion was measured, the color was evaluated, and the pH was measured. The results are shown in Table 4.
- the evaluation criteria for comprehensive judgment are as follows. S: Evaluation of dimer body amount (%) after thermal severe test I is S, and evaluation of all other items is A. A: Evaluation of all items is A. B: Evaluation of all items is S, A, or B, and one or more items whose evaluation is B are included. C: One or more items whose evaluation is C are included.
- sodium citrate, ascorbic acid, cysteine hydrochloride, sodium thioglycolate, and alpha thioglycerin were confirmed to inhibit dimer bodies after heat aging.
- sodium citrate and ascorbic acid if the addition amount is too large, the particle size after heat aging is in an unfavorable range, so the addition amount is suppressed, respectively, and the dimer body and particle size after heat aging are within the preferable range.
- an oil-in-water emulsion containing propofol is not preferable as an injectable preparation because the pH decreases with time.
- Examples 15 to 22, Comparative Example 3 (Preparation of propofol-containing emulsion composition)
- each component shown in Table 5 was used so as to have the content in the table (the numbers in the table indicate w / v% relative to the total volume of the composition).
- a propofol-containing oil-in-water emulsion composition was prepared.
- the prepared emulsion compositions were sterilized by filtration in the same manner as in Examples 1 to 14 and Comparative Example 2, and when the dissolved oxygen concentration reached a desired value while stirring in a nitrogen atmosphere, high-pressure steam sterilization was performed.
- 1 ml (made by Daikyo Seiko Co., Ltd.) filled with CZ syringe and filled in a lami zip.
- the thermal severe test I was conducted in the same manner as in Examples 1 to 14 and Comparative Example 2, and the stability was evaluated. The results are shown in Table 6. By controlling the dissolved oxygen concentration to 5 mg / L or less, the amount of the dimer body after the thermal severe test I can be within a preferable range.
- the aqueous phase was added and this was roughly emulsified with a homomixer (15000 rpm (rotation / min), 5 min). This was passed twice under the condition of 245 MPa using a high-pressure emulsifier (Starburst Minilab Machine, Sugino Machine Co.). Thereafter, an additive was added, and the emulsion composition was prepared by adjusting the pH to 8.0 with 1 mol / L hydrochloric acid or 1 mol / L sodium hydroxide.
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Abstract
Description
(1)トリスヒドロキシメチルアミノメタン、リン酸及びトリエタノールアミンからなる群より選択される少なくとも一種と、プロポフォールと、油性成分と、乳化剤と、水とを含むプロポフォール含有水中油型エマルション組成物であって、溶存酸素濃度が5mg/L以下であり、エマルションの平均粒子径が180nm以下である、プロポフォール含有水中油型エマルション組成物。
(2)プラスチック容器に充填された、(1)に記載のプロポフォール含有水中油型エマルション組成物。
(3)トリスヒドロキシメチルアミノメタン、リン酸及びトリエタノールアミンからなる群より選択される少なくとも一種が、トリスヒドロキシメチルアミノメタンである、(1)又は(2)に記載のプロポフォール含有水中油型エマルション組成物。
(4)さらに抗酸化剤を含み、上記抗酸化剤がクエン酸又はその塩、アスコルビン酸又はその塩、及びチオール系抗酸化剤からなる群より選択される少なくとも一種である、(1)から(3)の何れかに記載のプロポフォール含有水中油型エマルション組成物。
(5)抗酸化剤がチオール系抗酸化剤である、(4)に記載のプロポフォール含有水中油型エマルション組成物。
(6)トリスヒドロキシメチルアミノメタン、及び抗酸化剤としてチオール系抗酸化剤及びクエン酸又はその塩、を含む、(4)又は(5)に記載のプロポフォール含有水中油型エマルション組成物。
(7)トリスヒドロキシメチルアミノメタン、及び抗酸化剤としてチオール系抗酸化剤及びアスコルビン酸又はその塩を含む、(4)又は(5)に記載のプロポフォール含有水中油型エマルション組成物。
(8)チオール系抗酸化剤が、システイン又はその塩、チオグリコール酸又はその塩あるいはチオグリセリンである、(4)から(7)の何れかに記載のプロポフォール含有水中油型エマルション組成物。
(9)プロポフォールを0.1~5w/v%、乳化剤を0.1~2w/v%、油性成分を0.1~9.9w/v%含む、(1)から(8)の何れかに記載のプロポフォール含有水中油型エマルション組成物。
(10)プロポフォールと、油性成分と、乳化剤と、水とを含む組成物を高圧ホモジナイザーを用いて200MPa以上の圧力条件下にて処理する工程、及び得られた組成物を孔径0.22μm以下のフィルターに通すことにより滅菌する工程を含む、(1)から(9)の何れかに記載のプロポフォール含有水中油型エマルション組成物の製造方法。
(11)フィルターの材料が、酢酸セルロースである、(10)に記載の製造方法。
本明細書においては、プロポフォール含有水中油型エマルション組成物を、単に「エマルション組成物」又は「組成物」ということがある。
本明細書において、組成物中の各成分の量について言及する場合、組成物中に各成分に該当する物質が複数存在する場合には、特に断らない限り、組成物中に存在する上記複数の物質の合計量を意味する。
本明細書において「工程」との語は、独立した工程だけでなく、他の工程と明確に区別できない場合であっても本工程の所期の作用が達成されれば、本用語に含まれる。
また、本明細書において「~」を用いて示された数値範囲は、「~」の前後に記載される数値をそれぞれ最小値及び最大値として含む範囲を示す。
また、本発明において、例えば本発明のエマルション組成物を構成する各成分の配合量(濃度)について用いられる「w/w%」は、各成分の質量(g)の、基準となる物質の質量(g)の100分率(下記式1b)を意味する。
式1a:[各成分質量(g)/全組成物の容積(容量)100mL]×100(%)
式1b:[各成分の質量(g)/基準となる物質の質量(g)]×100(%)
以下、本発明について説明する。
測定においては、温度及び圧力は、常温、大気圧で行うことが好ましく、温度は20~30℃の間、圧力は大気圧で行うことがより好ましい。
本発明におけるエマルションの平均粒子径は、動的光散乱粒度分布測定装置にてContin法より得られる散乱強度分布のメジアン径を、エマルションの平均粒子径とした。
また、本発明において、油性成分の質量に対するプロポフォールの質量は、1w/w%~50w/w%が好ましく、5w/w%~35w/w%がより好ましい。
本発明において「油性成分」とは、医薬として許容可能であり、水中油型エマルション組成物において油相を構成し得る成分を広く意味する。本発明における油性成分としては、例えば、中鎖脂肪酸トリグリセリド;植物油(即ち、天然のトリグリセリド)、化学合成トリグリセリド、若しくは動物油などの長鎖脂肪酸トリグリセリド;鉱油;合成油;精油;エステル油など、又はこれらの混合物が挙げられる。ただし、本発明における油性成分には、プロポフォールは含まれない。
本発明において、中鎖脂肪酸トリグリセリドとは、中鎖脂肪酸トリグリセリドに含有されるトリグリセリドを構成する脂肪酸鎖の平均炭素数が12以下の油脂を意味する。
中鎖脂肪酸トリグリセリドにおける脂肪酸の平均炭素数とは、中鎖脂肪酸トリグリセリドに含まれるトリグリセリドを構成する脂肪酸鎖(本明細書中では「構成脂肪酸」ということがある)の炭素数(例えば、カプリル酸であれば8、カプリン酸であれば10)を構成脂肪酸の組成比によって加重平均したものである。
ダイズ油(大豆油)とは、マメ科ダイズ属の植物の種子から得た植物油であり、公知の搾取方法・公知の精製方法を用いて種子から得ることができる。例えば日本薬局方に記載の「ダイズ油」の規格に適合するものを使用できる。ダイズ油の市販品としては、「日本薬局方 ダイズ油」(カネダ社)、「大豆油YM」(日清オイリオ社)、SR-SOYBEAN-LQ-(JP) (クローダジャパン社)などを例示できる。
化学合成トリグリセリドの例としては、例えば2-リノレオイル-1,3-ジオクタノイルグリセロールを例示できる。
リン脂質としては、生体適合性の観点から、卵黄レシチン、卵黄ホスファチジルコリン、大豆レシチン及び大豆ホスファチジルコリンがより好ましく、特に卵黄レシチンが好ましい。
トリスヒドロキシメチルアミノメタンを使用する場合、その含有質量は、プロポフォールの分解抑制の観点から、組成物の全容量に対して0.005w/v%以上0.5w/v%以下であることが好ましく、0.01w/v%以上0.2w/v%以下の含有量であることが更に好ましい。
リン酸を使用する場合、リン酸塩(例えば、リン酸水素二ナトリウム、リン酸二水素ナトリウムなど)として添加することができ、リン酸塩としての含有質量は、プロポフォールの分解抑制の観点から、組成物の全容量に対して0.01w/v%以上1w/v%以下であることが好ましく、0.05w/v%以上0.5w/v%以下の含有量であることが更に好ましい。
トリエタノールアミンを使用する場合、その含有質量は、プロポフォールの分解抑制の観点から、組成物の全容量に対して0.0005w/v%以上0.05w/v%以下であることが好ましく、0.001w/v%以上0.01w/v%以下の含有量であることが更に好ましい。
トリスヒドロキシメチルアミノメタン、リン酸及びトリエタノールアミンの含有質量を上記の範囲とすることにより、プロポフォールの分解抑制効果を充分に得ることができ、また過剰投与の影響をほとんど考慮する必要がないために、それぞれ好ましい。また乳化安定性の面でも好ましい。
具体的には、ナトリウム、カリウム等とのアルカリ金属塩、カルシウム、マグネシウム等とのアルカリ土類金属塩、亜鉛、鉄、コバルト、銅等との遷移金属塩、アンモニウム、トリエタノールアミン、L-ヒスチジン、L-アルギニン、L-リジン等との塩基性アンモニウム塩などが挙げられる。
中でも、クエン酸又はアスコルビン酸としては、クエン酸三ナトリウム、クエン酸二ナトリウム、クエン酸二水素ナトリウム、クエン酸水素二ナトリウム、クエン酸三カリウム、クエン酸二カリウム、クエン酸二水素カリウム、クエン酸水素二カリウム、アスコルビン酸ナトリウム、アスコルビン酸カリウム、アスコルビン酸マグネシウム、アスコルビン酸カルシウム、アスコルビン酸リン酸ナトリウム、アスコルビン酸リン酸マグネシウムなどが挙げられる。プロポフォールの分解抑制の観点から、クエン酸三ナトリウム、アスコルビン酸を用いることが好ましいが、特に限定されない。
中でも、システインの塩としては、塩酸システイン等が挙げられ、チオグリコール酸の塩としては、チオグリコール酸ナトリウム、チオグリコール酸カリウム等が挙げられる。
pH調整剤の例としては、塩酸、酢酸、乳酸、リンゴ酸、水酸化ナトリウムなどを使用できる。
等張化剤の例としてはグリセリン;ブドウ糖、果糖、マルトースなどの糖類;ソルビトール、キシリトールなどの糖アルコール類;塩化ナトリウム、塩化マグネシウムなどの塩類などを挙げることができる。
ゼータ電位は、一般的には電気泳動と光散乱を組み合わせる方法、例えば、電気泳動光散乱測定法(レーザードップラー法)により行われる。本方法は、粒子に電場をかけて上記粒子を移動(電気泳動)させ、移動する粒子にレーザー照射し、照射光と散乱光の周波数の変化から泳動速度を求めることによりゼータ電位を算出するものである。ゼータ電位は、例えば、マルバーン(株)製Nano-ZS、大塚電子製ゼータ電位測定装置ELS-8000により測定することができる。
好ましくは、本発明のプロポフォール含有水中油型エマルション組成物は、 プロポフォールと、油性成分と、乳化剤と、水とを含む組成物を高圧ホモジナイザーを用いて200MPa以上の圧力条件下にて処理する工程、及び得られた組成物を孔径0.22μm以下のフィルターに通すことにより滅菌する工程によって製造することができる。
抗酸化剤の添加もまた、緩衝剤の添加と同様である。
プロポフォールの分解抑制効果については、例えば、プロポフォールダイマー体の検出によって評価することができる。プロポフォールダイマー体の検出は、公知の方法を採用することができ、例えば高速液体クロマトグラフィー(HPLC)測定によって検出することができる。
プロポフォール: 「2,6-ジイソプロピルフェノール」(Bachem社製)
日本薬局方ダイズ油: 「日本薬局方 ダイズ油」(カネダ社製)
中鎖脂肪酸トリグリセリド: 「ミグリオール812」(Sasol社製)
精製卵黄レシチン: 「卵黄レシチンPL100-M」(キユーピー社製)
日本薬局方濃グリセリン: 「日本薬局方濃グリセリン」(坂本薬品工業社製)
トリスヒドロキシメチルアミノメタン:「トロメタモール製造用」(和光純薬工業製)
トリエタノールアミン: 「トリエタノールアミン」(東京化成工業(株)製)
リン酸水素二ナトリウム: 「リン酸水素ニナトリウム」(和光純薬工業(株)社製)
リン酸二水素ナトリウム: 「リン酸二水素ナトリウム」(和光純薬工業(株)社製)
クエン酸ナトリウム: 「クエン酸三ナトリウム二水和物」(和光純薬工業(株)社製)
アスコルビン酸: 「アスコルビン酸」(DSMニュートリションジャパン(株)社製)
塩酸システイン: 「L-システイン塩酸塩水和物」(協和発酵バイオ(株)製)
チオグリコール酸ナトリウム: 「チオグリコール酸ナトリウム」(東京化成工業(株)製)
亜硫酸水素ナトリウム: 「亜硫酸水素ナトリウム」(和光純薬工業(株)社製)
亜硫酸ナトリウム: 「亜硫酸ナトリウム」(和光純薬工業(株)社製)
ピロ亜硫酸ナトリウム: 「二亜硫酸ナトリウム」(和光純薬工業(株)社製)
アルファチオグリセリン: 「1-チオグリセロール」(旭化学工業(株)製)
オレイン酸ナトリウム: 「オレイン酸ナトリウム」(和光純薬工業社製)
1モル/L塩酸(和光純薬工業(株)社製)
1モル/L水酸化ナトリウム(和光純薬工業(株)社製)
(プロポフォール含有エマルション組成物の製造)
表1に記載の各成分を表中の含有量(表中の数字は組成物全容積に対するw/v%を示す)となるように用いて、以下の手順でプロポフォール含有水中油型エマルション組成物を製造した。
各中鎖脂肪酸トリグリセリドとダイズ油を混合し、プロポフォールを添加し、攪拌して溶解させ、油相を作製した。グリセリンを水に溶解し、水相を作製した。油相に精製卵黄レシチンを添加して混合した後、水相を添加し、これをホモミキサー(15000rpm(回転/分)、5分)にて粗乳化した。これを高圧乳化機(スターバースト ミニラボ機、スギノマシン社)を用いて245MPaの条件で5回通過させた。その後添加剤を添加し、1モル/L塩酸もしくは1モル/L水酸化ナトリウムによりpH8.0に調整することで、エマルション組成物を製造した。
実施例1~14及び比較例2はラミジップに封入した状態にて60℃の恒温槽に1週間保管し、熱過酷試験を行った。
(熱過酷試験II)
実施例4~実施例14及び比較例2はラミジップに封入した状態にて60℃の恒温槽に48日間保管し、熱過酷試験を行った。
表1に記載の実施例、比較例にて調製した、保管前、熱過酷試験I後及び熱過酷試験II後のエマルション組成物400mgを秤り取り、溶離液にて5mlにメスアップした。溶解した試料を採取し、高速液体クロマトグラフィー[カラム:Cadenza CD-C18(Intakt社)、溶離液:40質量%テトラヒドロフラン水溶液、流量:0.8mL/分、カラム温度:40℃、検出器:紫外線(UV)検出器、検出波長:270nm、注入量:10μL]にて、プロポフォール及びプロポフォールの類縁物質であるダイマー体(3,3’-5,5’-テトライソプロピルジフェニール)の濃度測定を行った。プロポフォールに対するダイマー体の質量比を算出し、ダイマー体量(%)として、安定性の評価の指標とした。
A:0.030%未満
B:0.030%以上0.085%未満
C:0.085%以上
S:0.030%未満
A:0.030%以上0.085%未満
B:0.085%以上0.140%未満
C:0.140%以上
S:0.080%未満
A:0.080%以上0.200%未満
B:0.200%以上0.500%未満
C:0.500%以上
表1に記載の実施例、参考例及び比較例にて調製したエマルション組成物を、高圧乳化直後に精製水を用いて10~100倍に希釈した。得られた希釈液を光散乱粒度分布測定装置(FPAR-1000、大塚電子社)にてContin法より得られる散乱強度分布のメジアン径を、粒径として記録した。
A:180nm未満
B:180nm以上300nm未満
C:300nm以上
A:180nm未満
B:180nm以上1500nm未満
C:1500nm以上
表1に記載の実施例、参考例及び比較例にて調製したエマルション組成物を目視で確認し、熱経時により着色したかどうかを判断した。
A:過酷試験I前後のエマルション組成物を並べた際に、色の違いが判断できない
B:過酷試験I前後のエマルション組成物を並べた際に、色の違いが判断できる
A:過酷試験II前後のエマルション組成物を並べた際に、色の違いが判断できない
B:過酷試験II前後のエマルション組成物を並べた際に、色の違いが判断できる
表1に記載の実施例、参考例及び比較例にて調製した、保管前、熱過酷試験I後のエマルション組成物を原液のまま用い、pHメータ(装置型番:F-73、堀場製作所(株)社製、pH電極:マイクロToupH電極9618-10Dにより測定した。熱過酷試験I前のpH値から熱過酷試験I後のpH値を差し引いた値であるpH低下の評価基準は以下の通りである。
A:1.0未満
B:1.0以上
結果を表2に示す。なお、総合判定の評価基準は以下の通りである。
S:熱過酷試験I、II後ダイマー体量(%)の評価がSであり、その他の項目の評価が全てAである。
A:全ての項目の評価がAである。
B:全ての項目の評価がS、A、又はBであり、評価がBである項目が一つ以上含まれる。
C:評価がCである項目が一つ以上含まれる。
比較例2ではpH低下が大きく好ましくないが、実施例1~3に示すように、緩衝剤を入れることで、pH低下を抑制することが出来る。また、比較例2では、熱経時後のダイマー体量が多く好ましくないが、実施例1~3に示すように、緩衝剤を入れることで熱経時によるダイマー体の増加もまた抑制することができる。これは予想外の効果である。中でも、ダイマー体抑制効果が高く、熱経時後の平均粒子径も好ましいことから、緩衝剤の中でもトリスヒドロキシメチルアミノメタンが最も好ましい。
これら使用した抗酸化剤は、次に示す参考例2~13の結果に基づき、好ましいものを選定した。
(プロポフォール含有エマルション組成物の作製)
表3に記載の各成分を表中の含有量(表中の数字は組成物全容積に対するw/v%を示す)となるように用いて、以下の手順でプロポフォール含有水中油型エマルション組成物を作製した。
各中鎖脂肪酸トリグリセリドとダイズ油を混合し、プロポフォールを添加し、攪拌して溶解させ、油相を作製した。グリセリンを水に溶解し、水相を作製した。油相に精製卵黄レシチンを添加して混合した後、水相を添加し、これをホモミキサー(15000rpm(回転/分)、5分)にて粗乳化した。これを高圧乳化機(スターバースト ミニラボ機、スギノマシン社)を用いて245MPaの条件で5回通過させた。その後添加剤を添加し、エマルション組成物を作製した。
作製したエマルション組成物は、実施例1~14及び比較例2同様にろ過滅菌を行い、窒素雰囲気下にて3時間攪拌し、溶存酸素濃度が0.1mg/L以下(測定温度:室温、圧力:大気圧)になっていることを確認した後、高圧蒸気滅菌をおこなったCZシリンジ1ml(大協精工製)に充填し、ラミジップに封入した。
実施例1~14及び比較例2と同様に熱過酷試験Iを行い、安定性の評価、エマルションの平均粒子径の測定、着色の評価及びpH測定を行った。
結果を表4に示す。なお、総合判定の評価基準は以下の通りである。
S:熱過酷試験I後ダイマー体量(%)の評価がSであり、その他の項目の評価が全てAである。
A:全ての項目の評価がAである。
B:全ての項目の評価がS、A、又はBであり、評価がBである項目が一つ以上含まれる。
C:評価がCである項目が一つ以上含まれる。
(プロポフォール含有エマルション組成物の作製)
表5に記載の各成分を表中の含有量(表中の数字は組成物全容積に対するw/v%を示す)となるように用いて、実施例1~14及び比較例2と同様にプロポフォール含有水中油型エマルション組成物を作製した。
作製したエマルション組成物は、実施例1~14及び比較例2と同様にろ過滅菌を行い、窒素雰囲気下にて攪拌をしながら、溶存酸素濃度が所望の値になったところで、それぞれ高圧蒸気滅菌をおこなったCZシリンジ1ml(大協精工製)に充填し、ラミジップに封入した。
実施例1~14及び比較例2と同様に熱過酷試験Iを行い、安定性の評価を行った。
結果を表6に示す。溶存酸素濃度は5mg/L以下に制御することで、熱過酷試験I後のダイマー体の量を好ましい範囲とすることができる。
(プロポフォール含有エマルション組成物の作製)
表7に記載の各成分を表中の含有量(表中の数字は組成物全容積に対するw/v%を示す)となるように用いて、以下の手順でプロポフォール含有水中油型エマルション組成物を作製した。
各中鎖脂肪酸トリグリセリドとダイズ油を混合し、プロポフォールを添加し、攪拌して溶解させ、油相を作製した。グリセリンを水に溶解し、水相を作製した。油相に精製卵黄レシチンを添加して混合した後、水相を添加し、これをホモミキサー(15000rpm(回転/分)、5分)にて粗乳化した。これを高圧乳化機(スターバースト ミニラボ機、スギノマシン社)を用いて245MPaの条件で2回通過させた。その後添加剤を添加し、1モル/L塩酸もしくは1モル/L水酸化ナトリウムによりpH8.0に調整することで、エマルション組成物を作製した。
表7に記載の実施例、比較例にて調製した、保管前及び後のエマルション組成物を、所定のろ過滅菌用フィルターがセットされたStainless Steel Pressure Filter Holder, 47mm, 340mL(メルクミリポア社製)に注ぎ、窒素圧力0.2MPa下で透過した単位時間当たりのろ液量を測定した。得られた結果をろ過の完全閉塞モデル式に従い、1Lの液量処理に必要なろ過面積を算出し比較を行った。なお、必要ろ過面積の評価基準は以下の通りである。
A:200cm2/L未満
B:200cm2/L以上1000cm2/L未満
C:1000cm2/L以上
結果を表8に示す。酢酸セルロースのろ過滅菌フィルターを用いた際に、組成変更による粒子径変化により必要ろ過面積は変わり、粒子径が180nm以下であるときに好ましいろ過性となる。またフィルター種によりろ過性は大きく異なり、プロポフォールを含有する水中油型エマルションのろ過性は、酢酸セルロールフィルターを用いた際に得られる。
Claims (11)
- トリスヒドロキシメチルアミノメタン、リン酸及びトリエタノールアミンからなる群より選択される少なくとも一種と、プロポフォールと、油性成分と、乳化剤と、水とを含むプロポフォール含有水中油型エマルション組成物であって、溶存酸素濃度が5mg/L以下であり、エマルションの平均粒子径が180nm以下である、プロポフォール含有水中油型エマルション組成物。
- プラスチック容器に充填された、請求項1に記載のプロポフォール含有水中油型エマルション組成物。
- トリスヒドロキシメチルアミノメタン、リン酸及びトリエタノールアミンからなる群より選択される少なくとも一種が、トリスヒドロキシメチルアミノメタンである、請求項1又は請求項2のいずれか1項に記載のプロポフォール含有水中油型エマルション組成物。
- さらに抗酸化剤を含み、上記抗酸化剤がクエン酸又はその塩、アスコルビン酸又はその塩、及びチオール系抗酸化剤からなる群より選択される少なくとも一種である、請求項1から3の何れか一項に記載のプロポフォール含有水中油型エマルション組成物。
- 抗酸化剤がチオール系抗酸化剤である、請求項4に記載のプロポフォール含有水中油型エマルション組成物。
- トリスヒドロキシメチルアミノメタン、及び抗酸化剤としてチオール系抗酸化剤及びクエン酸又はその塩を含む、請求項4又は請求項5に記載のプロポフォール含有水中油型エマルション組成物。
- トリスヒドロキシメチルアミノメタン、及び抗酸化剤としてチオール系抗酸化剤及びアスコルビン酸又はその塩を含む、請求項4又は請求項5に記載のプロポフォール含有水中油型エマルション組成物。
- チオール系抗酸化剤が、システイン又はその塩、チオグリコール酸又はその塩あるいはチオグリセリンである、請求項4から7の何れか一項に記載のプロポフォール含有水中油型エマルション組成物。
- プロポフォールを0.1~5w/v%、乳化剤を0.1~2w/v%、油性成分を0.1~9.9w/v%含む、請求項1から8の何れか一項に記載のプロポフォール含有水中油型エマルション組成物。
- プロポフォールと、油性成分と、乳化剤と、水とを含む組成物を高圧ホモジナイザーを用いて200MPa以上の圧力条件下にて処理する工程、及び得られた組成物を孔径0.22μm以下のフィルターに通すことにより滅菌する工程を含む、請求項1から9の何れか一項に記載のプロポフォール含有水中油型エマルション組成物の製造方法。
- フィルターの材料が、酢酸セルロースである、請求項10に記載の製造方法。
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| EP15843255.9A EP3199150A4 (en) | 2014-09-25 | 2015-09-24 | Propofol-containing oil-in-water emulsion composition and method for producing same |
| CN201580051686.XA CN106714787A (zh) | 2014-09-25 | 2015-09-24 | 含丙泊酚的水包油型乳液组合物及其制造方法 |
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| US15/468,302 Continuation US20170196807A1 (en) | 2014-09-25 | 2017-03-24 | Propofol-containing oil-in-water emulsion composition and method for producing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016047664A1 true WO2016047664A1 (ja) | 2016-03-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2015/076870 Ceased WO2016047664A1 (ja) | 2014-09-25 | 2015-09-24 | プロポフォール含有水中油型エマルション組成物及びその製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20170196807A1 (ja) |
| EP (1) | EP3199150A4 (ja) |
| JP (1) | JP6392883B2 (ja) |
| CN (1) | CN106714787A (ja) |
| WO (1) | WO2016047664A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022514037A (ja) * | 2018-12-21 | 2022-02-09 | ドン-ア エスティ カンパニー リミテッド | 安定化されたドネペジル含有経皮吸収製剤 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112022729B (zh) * | 2020-05-27 | 2023-04-07 | 浙江工业大学 | 一种以雷米邦a为乳化剂的o/w型乳液及其制备方法 |
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| US6177477B1 (en) * | 1999-03-24 | 2001-01-23 | American Home Products Corporation | Propofol formulation containing TRIS |
| JP2004526730A (ja) * | 2001-03-20 | 2004-09-02 | サイデックス・インコーポレイテッド | プロポフォール及びスルホアルキルエーテルシクロデキストリン含有製剤 |
| JP2006504771A (ja) * | 2002-10-29 | 2006-02-09 | トランスフォーム・ファーマシューティカルズ・インコーポレイテッド | システインを伴うプロポフォール |
| WO2006112276A1 (ja) * | 2005-04-13 | 2006-10-26 | Otsuka Pharmaceutical Factory, Inc. | プロポフォール含有脂肪乳剤 |
| JP2010534555A (ja) * | 2007-07-26 | 2010-11-11 | シェンヤン ファーマシューティカル ユニバーシティ | 複合型乳化剤及びそれを用いて調製された乳剤並びにその調製方法 |
| JP2012210315A (ja) * | 2011-03-31 | 2012-11-01 | Terumo Corp | 脂肪乳剤プレフィルドシリンジ製剤 |
| CN102805728A (zh) * | 2012-08-22 | 2012-12-05 | 南京正大天晴制药有限公司 | 一种丙泊酚脂肪乳注射液及其制备方法 |
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| US8546453B2 (en) * | 2003-08-14 | 2013-10-01 | Rensheng Zhang | Propofol compositions and methods for reducing pain associated with propofol injection |
| US20070293586A1 (en) * | 2005-02-03 | 2007-12-20 | Suresh Dixit | Novel propofol composition comprising ascorbic acid or pharmaceutically acceptable salts thereof |
| WO2006128088A1 (en) * | 2005-05-27 | 2006-11-30 | Sandhya Goyal | Novel propofol composition comprising a pharmaceutically acceptable salt of formaldehyde sulfoxylate |
| WO2007124465A2 (en) * | 2006-04-20 | 2007-11-01 | Amgen Inc. | Stable emulsion formulations |
| CN101978949A (zh) * | 2010-11-16 | 2011-02-23 | 王京南 | γ-亚麻酸酯脂肪乳静脉注射液及其制造方法 |
-
2015
- 2015-09-24 WO PCT/JP2015/076870 patent/WO2016047664A1/ja not_active Ceased
- 2015-09-24 CN CN201580051686.XA patent/CN106714787A/zh active Pending
- 2015-09-24 JP JP2016550346A patent/JP6392883B2/ja not_active Expired - Fee Related
- 2015-09-24 EP EP15843255.9A patent/EP3199150A4/en not_active Withdrawn
-
2017
- 2017-03-24 US US15/468,302 patent/US20170196807A1/en not_active Abandoned
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|---|---|---|---|---|
| US6177477B1 (en) * | 1999-03-24 | 2001-01-23 | American Home Products Corporation | Propofol formulation containing TRIS |
| JP2004526730A (ja) * | 2001-03-20 | 2004-09-02 | サイデックス・インコーポレイテッド | プロポフォール及びスルホアルキルエーテルシクロデキストリン含有製剤 |
| JP2006504771A (ja) * | 2002-10-29 | 2006-02-09 | トランスフォーム・ファーマシューティカルズ・インコーポレイテッド | システインを伴うプロポフォール |
| WO2006112276A1 (ja) * | 2005-04-13 | 2006-10-26 | Otsuka Pharmaceutical Factory, Inc. | プロポフォール含有脂肪乳剤 |
| JP2010534555A (ja) * | 2007-07-26 | 2010-11-11 | シェンヤン ファーマシューティカル ユニバーシティ | 複合型乳化剤及びそれを用いて調製された乳剤並びにその調製方法 |
| JP2012210315A (ja) * | 2011-03-31 | 2012-11-01 | Terumo Corp | 脂肪乳剤プレフィルドシリンジ製剤 |
| CN102805728A (zh) * | 2012-08-22 | 2012-12-05 | 南京正大天晴制药有限公司 | 一种丙泊酚脂肪乳注射液及其制备方法 |
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| See also references of EP3199150A4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022514037A (ja) * | 2018-12-21 | 2022-02-09 | ドン-ア エスティ カンパニー リミテッド | 安定化されたドネペジル含有経皮吸収製剤 |
| JP7193643B2 (ja) | 2018-12-21 | 2022-12-20 | ドン-ア エスティ カンパニー リミテッド | 安定化されたドネペジル含有経皮吸収製剤 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20170196807A1 (en) | 2017-07-13 |
| EP3199150A1 (en) | 2017-08-02 |
| CN106714787A (zh) | 2017-05-24 |
| EP3199150A4 (en) | 2017-08-09 |
| JP6392883B2 (ja) | 2018-09-19 |
| JPWO2016047664A1 (ja) | 2017-06-22 |
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