CN1923281B - 一种含植物生物碱的抗癌缓释注射剂 - Google Patents
一种含植物生物碱的抗癌缓释注射剂 Download PDFInfo
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- CN1923281B CN1923281B CN200510044521A CN200510044521A CN1923281B CN 1923281 B CN1923281 B CN 1923281B CN 200510044521 A CN200510044521 A CN 200510044521A CN 200510044521 A CN200510044521 A CN 200510044521A CN 1923281 B CN1923281 B CN 1923281B
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- Prior art keywords
- injection
- slow
- tumor
- release
- vinorelbine
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Abstract
一种含植物生物碱的抗癌缓释注射剂,属于缓释抗癌药物技术领域。组分为抗癌药物、缓释辅料、助悬剂和/或溶媒。抗癌药物为(硫酸)长春新碱、长春花碱、甲基苄肼、异长春碱或长春瑞滨等植物生物碱;缓释辅料为聚乳酸、乙醇酸和羟基乙酸的共聚物、乙烯乙酸乙烯酯共聚物和聚苯丙生之一或其组合;助悬剂为羧甲基纤维素(钠)、甘露醇等;溶媒选自蒸馏水、注射用水、生理冲液、无水乙醇、磷酸盐或碳酸盐缓冲液。该抗癌缓释注射剂经皮下、腔内、瘤内、瘤周、淋巴结内或骨髓内注射给药不仅能够降低药物的全身毒性反应,同时还能选择性地提高和维持肿瘤局部的药物浓度,增强化疗药物及放射治疗等非手术疗法的治疗效果。
Description
(一)技术领域
本发明涉及一种含植物生物碱的抗癌缓释注射剂,属于药物技术领域。
(二)背景技术
植物生物碱类抗癌药作为常用的化疗药物已广泛应用于多种恶性肿瘤的治疗,且已取得较为明显的作用效果。然而,进一步研究发现,不适当的给药常常引起耐受性的产生,最终导致治疗的失败。由于实体肿瘤过度膨胀性增生,其间质压力、组织弹性压力、流体压力及间质的粘稠度均较其周围正常组织为高,因此,常规化疗,难于肿瘤局部形成有效药物浓度,参见孔庆忠等“瘤内放置顺铂加系统卡莫司汀治疗大鼠脑肿瘤”《外科肿瘤杂志》1998年69期76-82页(Kong Q et al.,J Surg Oncol.1998Oct;69(2):76-82),单纯提高给药剂量又受到全身反应的限制。药物植入可能在某种程度上解决药物浓度的问题,然而药物植入手术操作较复杂,创伤性大,除易导致出血、感染、免疫力降低等各种并发症外,还可引起或加速肿瘤的扩散与转移。除此之外,手术前后本身的准备及康复要求常常影响放疗及化疗等常规治疗的实施和进程。
(三)发明内容
本发明针对现有技术的不足,提供一种含植物生物碱的抗癌缓释注射剂。
本发明抗癌缓释注射剂,包括缓释微粒、助悬剂和/或溶媒,缓释微粒由植物生物碱抗癌药物和缓释辅料组成。
上述植物生物碱选自下列之一或组合:
长春碱、长春新碱(Vincristine,醛基长春碱)、硫酸长春新碱、长春花碱(Vinblastine)、异长春碱、长春吲哚、长春氮芥、氧桥长春碱、足叶草肼(米托肼)、酒石酸脱水长春碱、酒石酸环氧长春碱、环氧长春碱、酒石酸长春质碱、海南粗榧新碱、海南粗榧内酯、长春西汀、长春瑞滨(Vinorelbine,异长春花碱)、重酒石酸长春瑞滨、酒石酸长春瑞宾、长春倍酯(Vinmegallate)、长春罗新(Vinleurosine)、长春西醇(Vinleucinol)、长春甘酯(Vinglycinate)、硫酸长春苷酯、长春素、长春磷汀(Vinfosiltine)、长春米特(Vinformide)、长春氟宁(Vinflunine)、长春匹定(Vinepidine)、长春地辛(Vindesine,长春花碱酰胺)、长春利定(Vinzolidine)、长春曲醇(Vintriptol)、长春罗定(Vinrosidine)、氧化苦参碱、三尖杉碱(Cephalotaxin)、脱氧三尖杉酯碱、高三尖杉酯碱(Homoharringtonine)、珠囊壳素、野百合碱(Monocrotaline)、美坦新、依利醋铵、骆驼蓬总碱、心菊内酯、梅登素、冬凌草甲素、漳州水仙碱、盐酸前水仙碱、甲基苄肼、盐酸甲基苄肼、唐松草碱、唐松草新碱、异娃儿藤碱、娃儿藤新碱或白芙碱,以及上述植物生物碱的盐。
上述植物生物碱的盐选自硫酸盐、磷酸盐、盐酸盐、乳糖酸盐、醋酸盐、天冬酸盐、硝酸盐、枸橼酸盐、嘌呤或嘧啶盐、酒石酸盐、琥珀酸盐或马来酸盐。
以上植物生物碱优选如下:长春新碱、硫酸长春新碱、长春花碱、异长春碱、长春吲哚、长春氮芥、长春西汀、长春瑞滨、长春倍酯、长春罗新、长春西醇、长春甘酯、硫酸长春苷酯、长春素、长春磷汀、长春米特、长春氟宁、长春匹定、长春地辛、长春利定、长春曲醇、长春罗定、三尖杉碱、甲基苄肼或三尖杉碱.
上述植物生物碱或植物生物碱的盐在缓释微粒中所占的比例因具体情况而定,可从1%-99%,以2%-50%为佳,以5%-30%为最佳,重量百分比。
缓释辅料选自聚乳酸(PLA)、聚乙醇酸(PGA)、聚乙醇酸和羟基乙酸的共聚物(PLGA)、聚乳酸(PLA)与乙醇酸和羟基乙酸的共聚物(PLGA)的混合物、乙烯乙酸乙烯酯共聚物(EVAc)、[聚(1,3-二(对羧基苯氧基)丙烷-癸二酸)(p(CPP-SA),聚苯丙生)、木糖醇、低聚糖、软骨素、甲壳素、钾盐、钠盐、透明质酸、胶原蛋白、明胶和白蛋胶之一或其组合;上述缓释辅料在缓释微粒中所占的重量百分比为40%-99%。
上述缓释辅料中聚乳酸(PLA)分子量峰值可为,但不限于,5000~100,000,以20,000~60,000为优选,以30,000~50,000为最优选;聚乙醇酸(PGA)的分子量可为,但不限于,5000~100,000,以20,000~60,000为优选,以30,000~50,000为最优选;乙醇酸和羟基乙酸的共聚物(PLGA)的分子量可为,但不限于,5000~100,000,但以20,000~60,000为优选,以30,000~50,000为最优选;乙醇酸和羟基乙酸的共混重量比是10/90-90/10。聚(1,3-二(对羧基苯氧基)丙烷-癸二酸)(p(CPP-SA),聚苯丙生)中,对羧苯基丙烷(p-CPP)与葵二酸(SA)的重量比10/90-90/10,优选25/75-75/25。
助悬剂选自羧甲基纤维素、羧甲基纤维素钠、甘油、碘甘油、二甲硅油、丙二醇、卡波姆、甘露醇、山梨醇、吐温20或吐温80之一或其组合。
当同时含有助悬剂与溶媒时,助悬剂与溶媒组成特殊溶媒,也称注射体系,其中的助悬剂在溶媒中的含量为0.1mg/ml-20mg/ml,取决于所用助悬剂的种类,如羧甲基纤维素或羧甲基纤维素钠为溶媒的体积重量百分比可从0.1-5%,以0.5-3%为优选,1-2%为最优选。而吐温在溶媒中的含量是0.1mg/ml-1mg/ml,甘露醇或山梨醇在溶媒中的含量为10mg/ml-20mg/ml。
上述缓释注射剂的缓释微粒(也称缓释体系)可用若干种方法制备,如,但不限于,(i)熔融法:把药用辅料与药物直接粉碎混合,然后熔化、冷却制备缓释颗粒;(ii)溶解法:把把药用辅料与药物溶解于有机溶剂中,然后去除溶剂而制备缓释微球;(iii)喷雾干燥法制备微球;(iv)冷冻(干燥)粉碎法制成微粉;(v)溶解法结合冷冻(干燥)粉碎法制成微粉;(vi)脂质体包药法及(vii)乳化法等制备缓释微球。所制微球的粒径范围可在5-400um之间,以10-300um之间为优选,以20-200um之间为最优选。缓释体系中抗癌有效成分与缓释辅料的重量比可从1∶99到6∶4。
缓释微粒可呈各种形状,如,但不限于,微粒、颗粒、球形小丸、微球或微粉.为调节药物释放速度,可以改变聚合物的单体成分或分子量、添加或调节药用辅料的组成及配比,添加任意一种或多种其它药用辅料作为添加剂.添加剂可根据其功能分为充填剂、致孔剂、赋型剂、分散剂、等渗剂、保存剂、阻滞剂、增溶剂、吸收促进剂、成膜剂、胶凝剂等,其含量因具体情况而定.缓释或药用辅料在罗明生和高天惠主编的《药用辅料大全》第123页,四川科学技术出版社1993年3月版及屠锡德等主编的《药剂学》人民卫生出版社85年5月版中已有详细描述,另外,中国专利(申请号96115937.5,91109723.6,9710703.3,01803562.0)及美国发明专利(专利号5,651,986)也列举了某些药用辅料,包括充填剂、增溶剂、吸收促进剂、成膜剂、胶凝剂、制(或致)孔剂、交联剂、绑定剂、赋型剂或阻滞剂.以上药用辅料有的具有多重作用,因此有的同种物质被列为不同的类别.本发明可选用的支持物可为上述药用辅料中的任何一种或多种物质,并不完全根据其分类或定义来限制组合物的技术特征.
缓释体系与注射体系可分开单独消毒后分别分装、储存,使用时再混悬、注射;也可将缓释体系与一定比例的助悬剂混合后消毒、分装,使用时将之悬浮于分开消毒分装的普通溶媒或特殊溶媒中。所用的普通溶媒指临床常用注射液,如,但不限于,蒸馏水、注射用水、生理冲液、无水乙醇或各种盐配制的缓冲液,如磷酸盐或碳酸盐缓冲液等。特殊溶媒为含有一种或数种助悬剂的普通溶媒;缓释体系还可悬浮于注射体系后消毒、分装,用时直接注射,此种情况下可加一定量的防腐剂。
本发明缓释注射剂可进一步分为凝胶型缓释注射剂、溶液型缓释注射剂、混悬型缓释注射剂、微囊型缓释注射剂、微球型缓释注射剂、嵌段共聚物胶束注射剂或脂质体缓释注射剂。以上多种缓释注射剂中,优选混悬型缓释注射剂、凝胶型缓释注射剂、微球型缓释注射剂、嵌段共聚物胶束注射剂。
其中,混悬型缓释注射剂是将含抗癌成分的缓释微粒悬浮于注射液中所得的制剂。凝胶型缓释注射剂系将生物降解聚合物(如PLA、PLGA或DL-LA和ε-己内酯共聚物)溶于某些两亲性溶媒,再加入药物与之混溶(或混悬)后形成流动性较好的凝胶,可经瘤周或瘤内注射。一旦注入,两亲性溶媒很快扩散至体液,而体液中的水分则渗入凝胶,使聚合物固化,缓慢释放药物。微球型缓释注射剂包括微球、亚微球、微乳、纳米球、脂质体或凝胶等微粒分散制剂,所用药物载体为上述任意一种或其组合。嵌段共聚物胶束注射剂由疏水-亲水嵌段共聚物在水溶液中形成,具有球形内核-外壳结构,疏水嵌段形成内核,亲水嵌段形成外壳。载药胶束注射进入体内达到控制药物释放或靶向治疗的目的。所用药物载体为上述任意一种或其组合。其中优选分子量为1,000-15,000的聚乙二醇作为胶束共聚物的亲水嵌段,优选生物降解聚合物,如PLA、聚丙交酯、聚己内酯及其共聚物(分子量1,500-25,000)作为胶束共聚物的疏水嵌段。嵌段共聚物胶束的粒径范围可在10-300um之间,以20-200um为优选。
在上述各类缓释注射剂中以混悬型缓释注射剂为最优选,混悬型缓释注射剂是将含抗癌成分的缓释微粒悬浮于注射液中所得的制剂,所用的辅料为上述缓释辅料中的一种或其组合。悬浮的方式分为多种,但以以下三种为主,一是将含药的缓释微粒与助悬剂包装一起,在注射前将其悬浮于普通溶媒中,即“缓释微粒和助悬剂+普通溶媒”方案;二是将含药的缓释微粒单独包装,在注射前将其悬浮于特殊溶媒中,即“缓释微粒+特殊溶媒”方案;三是将含药的缓释微粒与助悬剂和普通溶媒一起混悬后消毒分装,用时直接注射。
下面是本发明的几个优选方案:
抗癌缓释注射剂,组分为20mg植物生物碱抗癌药物、80mg缓释辅料和1mg助悬剂。其中,植物生物碱抗癌药物为长春新碱、长春花碱、甲基苄肼、异长春碱或长春瑞滨;缓释辅料为聚乳酸、乙醇酸和羟基乙酸的共聚物、乙烯乙酸乙烯酯共聚物和聚苯丙生之一;助悬剂选自羧甲基纤维素、羧甲基纤维素钠、甘油、碘甘油、二甲硅油、丙二醇、卡波姆、甘露醇、山梨醇、吐温20或吐温80之一或其组合。
抗癌缓释注射剂,组分为30mg植物生物碱抗癌药物、70mg缓释辅料和10ml溶媒.其中,植物生物碱抗癌药物为长春新碱、长春花碱、甲基苄肼、异长春碱或长春瑞滨;缓释辅料为聚乳酸、乙醇酸和羟基乙酸的共聚物、乙烯乙酸乙烯酯共聚物和聚苯丙生之一;溶媒选自蒸馏水、注射用水、生理冲液、无水乙醇、磷酸盐或碳酸盐缓冲液.
抗癌缓释注射剂,组分为20mg植物生物碱抗癌药物、80mg缓释辅料、2mg助悬剂和10ml溶媒。其中,植物生物碱抗癌药物为长春新碱、长春花碱、甲基苄肼、异长春碱或长春瑞滨;缓释辅料为聚乳酸、乙醇酸和羟基乙酸的共聚物、乙烯乙酸乙烯酯共聚物和聚苯丙生之一;溶媒选自蒸馏水、注射用水、生理冲液、无水乙醇、磷酸盐或碳酸盐缓冲液。
本发明缓释注射剂应用助悬剂的目的在于有效悬浮含药缓释微球,从而利于注射。
缓释注射剂所用药用辅料为上述一种或数种辅料,可导入体腔内、瘤内或瘤周;凝胶型缓释注射剂是将生物降解聚合物PLA、PLGA、透明质酸、软骨素、胶原蛋白、明胶、白蛋白等和两亲溶剂相溶解制成聚合物溶液,然后与药物混溶后制成,呈果冻状、糊剂或软膏等凝胶型;溶液型缓释注射剂可选用植物油,如,但不限于,碘甘油、葵酸酯、肉酸、芝麻油、蓖麻油、豆油、花生油等作支持物;混悬型缓释注射剂也可将药物单独或包装于高分子聚合物之后制成油混悬剂、将药物与高分子化合物结合成难溶性盐混悬剂或将药物与盐反应形成药物盐结晶体的混悬液。
本发明抗癌缓释注射剂,是腔内注射剂、瘤内注射剂、瘤周注射剂或选择性动脉注射剂,腔内注射包括腹腔内、胸腔内及椎管内注射。还可以是淋巴结内及骨髓内注射剂。
由于本发明可使常规化疗、免疫治疗、高热治疗、光化学治疗、电疗、生物治疗、激素治疗、磁疗、超声治疗、放疗及基因治疗等方法的作用效果加强。因此在局部缓慢释放的同时可与上述非手术疗法合用,从而使其抗癌效果进一步加强。当与上述非手术疗法合用时,本发明可与非手术疗法同时应用,也可在非手术疗法实施前几天内应用,其目的在于尽可能增强肿瘤的敏感性。
给药途径
给药途径取决于多种因素,为于原发或转移肿瘤所在部位获有效浓度,药物可经多种途径给予,如腔内(如腹腔、胸腔及椎管内)、瘤内、瘤周、选择性动脉注射、淋巴结内及骨髓内放置或注射。以选择性动脉、腔内、瘤内、瘤周注射为优选。
给药剂量
药物的用量取决于很多因素,如,但不限于,肿瘤体积、病人体重、给药方式、病情进展情况及治疗反应。抗癌药物的有效剂量为0.01-200毫克/公斤体重,以1-30毫克/公斤体重为理想,以2-20毫克/公斤体重为最理想。其中有效成份的含量因不同需要而定。可从1%-99%,以2%-50%为佳,以5%-30%为最佳。
本发明可以用于制备治疗人及动物的各种肿瘤的缓释注射剂,所指肿瘤包括起源于神经系统、消化系统、呼吸系统、泌尿系统、生殖系统及皮肤等的原发或转移的癌或肉瘤或癌肉瘤。包括脑肿瘤、食道癌、肝癌、胆管癌、胃癌、胰腺、结肠癌、直肠癌、肺癌、肾癌、膀胱癌、乳腺癌、卵巢癌、子宫内膜癌、子宫颈癌、前列腺癌、头颈部肿瘤、口腔癌、甲状腺癌、皮肤癌、骨组织肿瘤、淋巴瘤、血管瘤、眼睛肿瘤、视网膜母细胞瘤和鼻咽癌。
本发明所制的缓释注射剂中还可加入其它药用成分,如,但不限于,抗菌素、止疼药、抗凝药、止血药等。
本发明主要以生物可容性物质为支持物,故不引起异物反应.支持物体内放置后可降解吸收,故不再手术取出.因在肿瘤局部释放所含药物,从而选择性地提高并延长局部药物浓度,同时可降低由常规途径给药所造成的全身毒性反应.
本发明制备技术的特点在于按照一定比例将抗癌有效成分紫杉碱类抗癌药物包装于缓释辅料中,用混合、熔融、溶解、喷雾干燥、冷冻(干燥)粉碎、乳化或脂质体包裹等方法制备微球(或粒),微球用于制备上述各种缓释注射剂,其中最优选的是混悬型缓释注射剂,所要悬浮的缓释体系或与注射体系一起称作注射用抗癌药物缓释剂,如“注射用长春瑞滨缓释剂”或“注射用长春新碱缓释剂”。
通过如下试验和实施例对本发明的技术方案作进一步的描述:
(四)具体实施方式
本发明加工成抗癌缓释注射剂通过以下实施例进一步加以说明,但不限于此。
实施例1.
将80mg药用辅料20000的PLGA(羟基乙酸和乙醇酸的共聚物,重量比70∶30)放入容器中,加入100毫升二氯甲烷溶解混匀后,加入20mg长春瑞滨,重新摇匀后真空干燥去除有机溶剂。将干燥后的固体组合物用熔融法制得含重量百分比20%的长春瑞滨的缓释小丸,分装后射线灭菌。将缓释小丸悬浮于含1.5%羧甲基纤维素钠的注射用水中,制得相应的混悬型缓释注射剂。该缓释注射剂在体外生理盐水中的释药时间为14-24天,在小鼠肝癌内的释药时间为20-35天。
实施例2.
如实施例1所述,所不同的是所含有效成分为重量百分比30%(硫酸)长春新碱、长春花碱、异长春碱、长春吲哚、长春氮芥、氧桥长春碱、足叶草肼、酒石酸脱水长春碱、酒石酸环氧长春碱、环氧长春碱、酒石酸长春质碱、海南粗榧新碱、海南粗榧内酯、长春西汀、重酒石酸、长春瑞滨、长春瑞宾双酒石酸盐、酒石酸长春瑞宾、长春倍酯、长春罗新、长春西醇、长春甘酯、硫酸长春苷酯、长春素、长春磷汀、长春米特、长春氟宁、长春匹定、长春地辛、长春利定、长春曲醇、长春罗定、氧化苦参碱、三尖杉碱、脱氧三尖杉酯碱、高三尖杉酯碱、珠囊壳素、野百合碱、美坦新、依利醋铵、骆驼蓬总碱、心菊内酯、梅登素、冬凌草甲素、漳州水仙碱、盐酸前水仙碱、甲基苄肼、盐酸甲基苄肼、唐松草碱、唐松草新碱、异娃儿藤碱、娃儿藤新碱或白芙碱。
实施例3.
将80mg药用辅料乙烯乙酸乙烯酯共聚物(EVAc)放入容器中,加入100毫升二氯甲烷溶解混匀后,加入20mg三尖杉碱,重新摇匀后真空干燥去除有机溶剂。将干燥后的固体组合物用熔融法制得得含重量百分比20%三尖杉碱的缓释小丸,分装后射线灭菌。将缓释小丸悬浮于含1.5%羧甲基纤维素钠和15%甘露醇的注射用水中,制得相应的混悬型缓释注射剂。该缓释注射剂在体外生理盐水中的释药时间为14-24天,在小鼠肺癌内的释药时间为20-35天。
实施例4.
加工成缓释注射剂的方法步骤与实施例3相同,所不同的是所含抗癌有效成分为:
(a)20%(硫酸)长春新碱、长春花碱、异长春碱、长春吲哚、长春氮芥、氧桥长春碱、足叶草肼、酒石酸脱水长春碱、酒石酸环氧长春碱、环氧长春碱、酒石酸长春质碱、海南粗榧新碱、海南粗榧内酯或长春西汀;或
(b)15%重酒石酸、长春瑞滨、长春瑞宾双酒石酸盐、酒石酸长春瑞宾、长春倍酯、长春罗新、长春西醇、长春甘酯、硫酸长春苷酯、长春素、长春磷汀、长春米特、长春氟宁或长春匹定;或
(c)10%长春地辛、长春利定、长春曲醇、长春罗定、氧化苦参碱、三尖杉碱、脱氧三尖杉酯碱、高三尖杉酯碱、珠囊壳素、野百合碱、美坦新、依利醋铵、骆驼蓬总碱、心菊内酯或梅登素;或
(d)5%冬凌草甲素、漳州水仙碱、盐酸前水仙碱、甲基苄肼、盐酸甲基苄肼、唐松草碱、唐松草新碱、异娃儿藤碱、娃儿藤新碱或白芙碱。
以上均为重量百分比。
实施例5.
将80mg药用辅料聚苯丙生(对羧苯基丙烷∶葵二酸,重量比为80∶20)放入容器中,加入100毫升二氯甲烷溶解混匀后,加入20mg长春花碱重新摇匀后真空干燥去除有机溶剂。将干燥后的固体组合物用熔融法制得含重量百分比20%长春花碱的缓释小丸,分装后射线灭菌。将缓释小丸悬浮于含1.5%羧甲基纤维素钠和15%甘露醇的注射用水中,制得相应的混悬型缓释注射剂。该缓释注射剂在体外生理盐水中的释药时间为14-24天,在小鼠皮下的释药时间为20-35天。
实施例6.
将80mg聚苯丙生(对羧苯基丙烷∶葵二酸共聚物,重量比为50∶50)放入容器中,加入100毫升二氯甲烷溶解混匀后,加入10mg长春地辛和10mg长春瑞滨,重新摇匀后用喷雾干燥法制备成含重量百分比10%长春地辛和10%长春瑞滨的微球。将缓释微球悬浮于含1.0%羧甲基纤维素钠和10%甘露醇的无水乙醇中,制得相应的混悬型缓释注射剂。该缓释注射剂在体外生理盐水中的释药时间为10-20天,在小鼠胰腺癌中的释药时间为20-30天。
实施例7.
将80mg分子量峰值为35000的聚乳酸放入容器中,加100毫升二氯甲烷,溶解混匀后,加入20mg异长春碱,重新摇匀后用喷雾干燥法制备成含重量百分比20%异长春碱的微球。将缓释微球悬浮于含1.0%羧甲基纤维素钠的无水乙醇中,制得相应的混悬型缓释注射剂。该缓释注射剂在生理盐水中的释药时间为10-20天,在小鼠皮下的释药时间为20-30天。
实施例8.
将70mg分子量峰值为35000的乙醇酸和羟基乙酸的共聚物(PLGA,50∶50)放入容器中,加100毫升二氯甲烷,溶解混匀后,加入30mg长春新碱,重新摇匀后真空干燥去除有机溶剂。将干燥后的含药固体物冷冻(干燥)粉碎制成含重量百分比30%长春新碱的小球。将缓释小球悬浮于含10%甘露醇的无水乙醇中,制得相应的混悬型缓释注射剂。该缓释注射剂在体外生理盐水中的释药时间为15-20天,在小鼠皮下的释药时间为30-40天。
实施例9.
加工成抗癌缓释注射剂的方法步骤与实施例1-8相同,但所不同的是所用的缓释辅料为下列之一或其组合:
a)分子量为5000-15000、10000-20000、20000-35000或30000-50000的聚乳酸;
b)分子量为5000-15000、10000-20000、20000-35000或30000-50000的乙醇酸和羟基乙酸的共聚物(PLGA),其中,乙醇酸和羟基乙酸的比例为50-95∶50-5;
c)乙烯乙酸乙烯酯共聚物(EVAc);
d)重量比10∶90、20∶80、30∶70、40∶60、50∶50或60∶40的对羧苯基丙烷∶二酸共聚物;
e)木糖醇、低聚糖、软骨素、甲壳素、钾盐、钠盐、透明质酸、胶原蛋白、明胶或白蛋胶。
实施例10.加工成抗癌缓释注射剂的方法步骤与实施例1-9相同,所不同的是所用的助悬剂为下列之一:
a)2.0%羧甲基纤维素;
b)10%甘露醇;
c)15%山梨醇;
d)0.3%吐温20;
e)碘甘油、二甲硅油、丙二醇或卡波姆。
实施例11.
将实施例2或4中所制备的缓释微球悬浮于含0.5-1.5%羧甲基纤维素钠和5-15%甘露醇的注射用水中,制得相应的混悬型缓释注射剂所含的抗癌有效成分为重量百分比5-30%的长春新碱、硫酸长春新碱、长春花碱、异长春碱、长春吲哚、长春氮芥、长春西汀、长春瑞滨、长春倍酯、长春罗新、长春西醇、长春甘酯、硫酸长春苷酯、长春素、长春磷汀、长春米特、长春氟宁、长春匹定、长春地辛、长春利定、长春曲醇、长春罗定、三尖杉碱、甲基苄肼或三尖杉碱。
如上所述,本发明抗癌缓释注射剂的制备方法可根据具体情况加以选择。因此,以上实施例仅用于说明而并非局限本发明的应用。
实施例12.含植物生物碱类抗癌药的抗癌缓释注射剂的体内抑瘤作用
以小白鼠为试验对象,将2x105个肿瘤细胞皮下注射于其季肋部,待肿瘤生长7天后将其分为以下10组(见表1)。第一组为对照,第2到10组为治疗组,其中,第2到4组为异长春碱,第5到7组为长春吲哚,第8到10组为长春氮芥。药物分别经腹腔注射针剂(ip)、瘤内注射针剂(it)和瘤内注射缓释剂(itp)。局部注射的异长春碱、长春吲哚及长春氮芥均来自实施例11,药物剂量均为5mg/kg,药物在植入剂中的重量百分比分别为10%、20%和30%。治疗后第10天测量肿瘤体积大小,比较治疗效果(见表1)。
表1
| 试验组(n) | 所受治疗 | 肿瘤体积(cm<sup>3</sup>) | P值 |
| 1(6) | 对照 | 50.5±10.5 | |
| 2(6) | 异长春碱(ip) | 21±5.0 | <0.05 |
| 试验组(n) | 所受治疗 | 肿瘤体积(cm<sup>3</sup>) | P值 |
| 3(6) | 异长春碱(it) | 12±3.5 | <0.01 |
| 4(6) | 异长春碱(itp) | 8±1.8 | <0.01 |
| 5(6) | 长春吲哚(ip) | 24±4.3 | <0.01 |
| 6(6) | 长春吲哚(it) | 22±4.6 | <0.01 |
| 7(6) | 长春吲哚(itp) | 10±1.6 | <0.001 |
| 8(6) | 长春氮芥(ip) | 26±5.6 | <0.001 |
| 9(6) | 长春氮芥(it) | 18±1.6 | <0.001 |
| 10(6) | 长春氮芥(itp) | 6±0.6 | <0.001 |
实施例13.植物生物碱类抗癌药的体内抑瘤作用
试验设计同实施例12,局部注射的异长春碱、长春新碱及长春花碱均来自实施例11,药物剂量均为5mg/kg,药物在植入剂中的重量百分比分别为10%、20%和30%,(见表2)。第一组为对照,第2到10组为治疗组,其中,第2到4组为长春瑞滨,第5到7组为长春倍酯,第8到10组为长春罗新。药物分别经腹腔注射针剂(ip)、瘤内注射针剂(it)和瘤内注射缓释剂(itp)。治疗后第10天测量肿瘤体积大小,比较治疗效果(见表2)。
表2
| 试验组(n) | 所受治疗 | 肿瘤体积(cm<sup>3</sup>) | P值 |
| 1(6) | 对照 | 78±14 | |
| 2(6) | 长春瑞滨(ip) | 46±6.0 | <0.05 |
| 3(6) | 长春瑞滨(it) | 38±4.3 | <0.01 |
| 4(6) | 长春瑞滨(itp) | 26±2.4 | <0.01 |
| 5(6) | 长春倍酯(ip) | 56±8.0 | <0.01 |
| 6(6) | 长春倍酯(it) | 34±3.0 | <0.01 |
| 7(6) | 长春倍酯(itp) | 18±2.0 | <0.001 |
| 8(6) | 长春罗新(ip) | 52±5.6 | <0.001 |
| 试验组(n) | 所受治疗 | 肿瘤体积(cm<sup>3</sup>) | P值 |
| 9(6) | 长春罗新(it) | 24±3.6 | <0.001 |
| 10(6) | 长春罗新(itp) | 12±3.6 | <0.001 |
实施例14.植物生物碱类抗癌药的体内抑瘤作用
试验设计同实施例12,局部注射的药物为10%长春瑞滨、20%三尖杉碱和30%长春地辛,均来自实施例11。药物剂量均为5mg/kg(见表3)。第一组为对照,第2到10组为治疗组,其中,第2到4组为长春瑞滨,第5到7组为长春倍酯,第8到10组为长春罗新。药物分别经腹腔注射针剂(ip)、瘤内注射针剂(it)和瘤内注射缓释剂(itp)。治疗后第10天测量肿瘤体积大小,比较治疗效果(见表3)。
表3
| 试验组(n) | 所受治疗 | 肿瘤体积(cm<sup>3</sup>) | P值 |
| 1(6) | 对照 | 78±12 | |
| 2(6) | 长春瑞滨(ip) | 46±8.0 | <0.05 |
| 3(6) | 长春瑞滨(it) | 38±4.3 | <0.01 |
| 4(6) | 长春瑞滨(itp) | 26±2.4 | <0.01 |
| 5(6) | 长春倍酯(ip) | 56±8.0 | <0.01 |
| 6(6) | 长春倍酯(it) | 34±3.0 | <0.01 |
| 7(6) | 长春倍酯(itp) | 18±2.0 | <0.001 |
| 8(6) | 长春罗新(ip) | 52±9.6 | <0.001 |
| 9(6) | 长春罗新(it) | 24±3.6 | <0.001 |
| 10(6) | 长春罗新(itp) | 12±3.6 | <0.001 |
实施例15.含植物生物碱类抗癌药的抗癌缓释注射剂的体内抑瘤作用
试验设计同实施例12,局部注射的药物为10%长春瑞滨、20%长春新碱和30%长春花碱,均来自实施例11。药物剂量均为5mg/kg(见表3)。第一组为对照,第2到10组为治疗组,其中,第2到4组为长春瑞滨,第5到7组为长春新碱,第8到10组为长春花碱。药物分别经腹腔注射针剂(ip)、瘤内注射针剂(it)和瘤内注射缓释剂(itp)。治疗后第10天测量肿瘤体积大小,比较治疗效果(见表3)。
表3
| 试验组(n) | 所受治疗 | 肿瘤体积(cm<sup>3</sup>) | P值 |
| 1(6) | 对照 | 78±12 | |
| 2(6) | 长春瑞滨(ip) | 46±8.0 | <0.05 |
| 3(6) | 长春瑞滨(it) | 38±4.3 | <0.01 |
| 4(6) | 长春瑞滨(itp) | 26±2.4 | <0.01 |
| 5(6) | 长春新碱(ip) | 58±8.0 | <0.01 |
| 6(6) | 长春新碱(it) | 44±3.0 | <0.01 |
| 7(6) | 长春新碱(itp) | 16±2.0 | <0.001 |
| 8(6) | 长春花碱(ip) | 50±9.6 | <0.001 |
| 9(6) | 长春花碱(it) | 28±3.6 | <0.001 |
| 10(6) | 长春花碱(itp) | 14±3.6 | <0.001 |
实施例12到15的结果表明,所用各种植物生物碱类抗癌药在该浓度时对肿瘤细胞生长均有明显的抑制作用,但以局部用药效果较为明显,其中局部注射缓释剂最为有效。局部注射不仅能够有效地抑制肿瘤生长,而且能够显著降低药物的全身毒性反应,对所选植物生物碱类抗癌药具有普遍意义。
局部注射缓释注射剂操作方便,可根据需要经常反复给药,局部并发症(如出血、感染等)少,对病人的损伤小,更不会刺激肿瘤扩散和转移。
本发明缓释注射剂以上独特和显著的优越性弥补了现有技术的不足,同时构成了本发明的主要特点。
实施例16.加工成抗癌缓释注射剂的方法步骤与实施例1-9相同,所不同的是抗癌缓释注射剂的组分如下:
20mg植物生物碱抗癌药物、80mg缓释辅料和1mg助悬剂。
其中,植物生物碱抗癌药物为长春新碱、长春花碱、甲基苄肼、异长春碱或长春瑞滨;缓释辅料为聚乳酸、乙醇酸和羟基乙酸的共聚物、乙烯乙酸乙烯酯共聚物和聚苯丙生之一或其组合;助悬剂选自羧甲基纤维素、羧甲基纤维素钠、甘油、碘甘油、二甲硅油、丙二醇、卡波姆、甘露醇、山梨醇、吐温20或吐温80之一或其组合。
实施例17.加工成抗癌缓释注射剂的方法步骤与实施例1-9相同,所不同的是抗癌缓释注射剂的组分如下:
30mg植物生物碱抗癌药物、70mg缓释辅料和10ml溶媒。
其中,植物生物碱抗癌药物为长春新碱、长春花碱、甲基苄肼、异长春碱或长春瑞滨;缓释辅料为聚乳酸、乙醇酸和羟基乙酸的共聚物、乙烯乙酸乙烯酯共聚物和聚苯丙生之一或其组合;溶媒选自蒸馏水、注射用水、生理冲液、无水乙醇、磷酸盐或碳酸盐缓冲液。
实施例18.加工成抗癌缓释注射剂的方法步骤与实施例1-9相同,所不同的是抗癌缓释注射剂的组分如下:
20mg植物生物碱抗癌药物、80mg缓释辅料、2mg助悬剂和10ml溶媒。
其中,植物生物碱抗癌药物为长春新碱、长春花碱、甲基苄肼、异长春碱或长春瑞滨;缓释辅料为聚乳酸、乙醇酸和羟基乙酸的共聚物、乙烯乙酸乙烯酯共聚物和聚苯丙生之一或其组合;溶媒选自蒸馏水、注射用水、生理冲液、无水乙醇、磷酸盐或碳酸盐缓冲液。
实施例19.加工成抗癌缓释注射剂的方法步骤与实施例1-9相同,所不同的是抗癌缓释注射剂的组分如下:
(A)10mg长春新碱,90mg聚乳酸(分子量峰值30000),1mg羧甲基纤维素钠;或
(B)20mg长春新碱,80mg聚乳酸(分子量峰值30000),10ml NaCL注射液;或
(C)30mg长春新碱,70mg聚乳酸(分子量峰值30000),1mg羧甲基纤维素钠,10mlNaCL注射液;或
(D)10mg长春瑞滨,40mg聚乳酸(分子量峰值30000),40mg乙醇酸和羟基乙酸的共聚物(分子量峰值30000,75∶25),1mg羧甲基纤维素;或
(E)20mg长春瑞滨,40mg聚乳酸(分子量峰值30000),40mg乙烯乙酸乙烯酯共聚物,10ml无水乙醇;或
(F)30mg长春瑞滨,35mg乙醇酸和羟基乙酸的共聚物(分子量峰值30000,75∶25),35mg乙烯乙酸乙烯酯共聚物,1mg羧甲基纤维素,10ml无水乙醇。
Claims (2)
1.一种抗癌缓释注射剂,其特征在于,包括缓释微粒、助悬剂和/或溶媒,缓释微粒由植物生物碱抗癌药物和缓释辅料组成;
所述的抗癌缓释注射剂由以下成分组成:
(1)缓释微粒中抗癌有效成分为20%三尖杉碱、缓释辅料为乙烯乙酸乙烯酯共聚物,溶媒为含1.5%羧甲基纤维素钠和15%甘露醇的注射用水;或
(2)缓释微粒中抗癌有效成分为20%长春花碱、缓释辅料为聚苯丙生,其中,聚苯丙生中对羧苯基丙烷∶癸二酸重量比为80∶20,溶媒为含1.5%羧甲基纤维素钠和15%甘露醇的注射用水。
2.如权利要求1所述之抗癌缓释注射剂,其特征在于,是腔内注射剂、瘤内注射剂或瘤周注射剂。
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| EP0328389A2 (en) * | 1988-02-11 | 1989-08-16 | Matrix Pharmaceutical Inc. | Compostions for treating intracranial tumors |
| CN1116212A (zh) * | 1990-10-16 | 1996-02-07 | 武田药品工业株式会社 | 缓释制剂及其聚合物 |
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| CN1461639A (zh) * | 2002-05-31 | 2003-12-17 | 王玉万 | 含氢化蓖麻油/治疗药物固体分散体微粒的缓释注射剂 |
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