CN111296338A - 一种实验室溪蟹感染并殖吸虫的方法 - Google Patents
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Abstract
本发明是一种实验室条件下溪蟹感染并殖吸虫的方法,其主要包括:收集大鼠感染并殖吸虫镜检有虫卵的粪便,清水融化后带虫卵粪液过五号药筛再过9药号筛,将附着虫卵的9药号筛置于川卷螺饲养水池清洗,让虫卵充分进入川卷螺饲养水池中,每个水池投放川卷螺60‑80个,川卷螺饲养水池水温保持在18‑23℃,虫卵进入川卷螺饲养水池中两周后每天驱赶川卷螺一次;将感染并殖吸虫三周以上的川卷螺转移到溪蟹饲养繁殖箱的水池中,每个饲养繁殖箱投入体重20‑30g溪蟹80‑100只。随着川卷螺成熟尾蚴的逸出,川卷螺与溪蟹在饲养繁殖箱内共栖六周后,溪蟹并殖吸虫感染率可达到90%以上,远远超过目前自然感染率,完全能满足实验室研究感染并殖吸虫溪蟹的需要。
Description
技术领域
本发明涉及实验室条件下溪蟹感染并殖吸虫的方法。
背景技术
目前,并殖吸虫人兽共患病研究、并殖吸虫肝纤维化和肺纤维化动物模型开发、并殖吸虫成虫分泌蛋白研究、以及特殊并殖吸虫种类的保种等工作,都需要大量感染并殖吸虫的溪蟹,随着森林的减少,保虫宿主野生动物群体逐渐缩小;农药化肥的大量使用,以及人类医疗卫生条件的改善,并殖吸虫发病人群减少等因素,直接导致第二中间宿主溪蟹的减少,并且溪蟹并殖吸虫感染率均呈现逐年下降的趋势(自然感染率20%左右),无法满足实验需要。为了解决这一现实问题,科研人员有必要在解决溪蟹繁殖技术的基础上,建立一种提高溪蟹感染并殖吸虫的方法。
并殖吸虫的第一中间宿主为川卷螺(虫卵到尾蚴),溪蟹是并殖吸虫的第二中间宿主(尾蚴到囊蚴),人、犬、猴、家猫、大白鼠等哺乳动物是保虫宿主(囊蚴到成虫);哺乳动物感染并殖吸虫(囊蚴)后3个月,成虫产生的虫卵便随痰和粪便排出体外。基于并殖吸虫复杂的生活史,课题组进行了实验室条件下溪蟹感染并殖吸虫的研究。
发明内容
本发明的目的是提供一种实验室条件下溪蟹感染并殖吸虫的方法。
本发明的实验室条件下溪蟹感染并殖吸虫方法的步骤为:
1.收集实验室感染并殖吸虫大鼠100天以上的粪便(镜检有虫卵的粪便),每20g粪便加180ml清水融化后轻轻震荡摇匀过五号药筛(180μm±7.6μm)充分过滤粪便颗粒,让虫卵顺利通过五号药筛,通过五号药筛含虫卵的液体再过9号药筛(75±4.1um)保证并殖吸虫的虫卵附着在9号药筛上,附着虫卵的9号药筛及时用保鲜袋密封保存在(16-20℃)闭光环境下保存备用,时间不超过24小时;
2. 川卷螺的并殖吸虫尾蚴感染
2.1建立川卷螺饲养水池;
2.2每个水池投放川卷螺60-80个,水池水面始终保持15-20棵水白菜,保障川卷螺吸附和食用,同时利用水白菜发达的根系消耗水中氮,防止水体富营养化;
2.3将附着有并殖吸虫虫卵的24小时内9药号筛放于川卷螺饲养水池,用毛刷轻轻刷洗,让虫卵充分进入川卷螺饲养水池中;
2.4川卷螺饲养水池水温保持在18-23℃,保证并殖吸虫虫卵充分孵化为毛蚴,并殖吸虫虫卵进入川卷螺饲养水池中两周后每天驱赶川卷螺一次,让川卷螺迁移运动,增加毛蚴侵入川卷螺体的机会;
3.将感染并殖吸虫三周以上的川卷螺转移到溪蟹饲养繁殖箱的水池中,每个饲养繁殖箱投入人工繁殖的体重20-30g溪蟹80-100只,随着川卷螺体内不断成熟尾蚴的逸出,溪蟹并殖吸虫尾蚴感染率逐渐上升,川卷螺与溪蟹在饲养繁殖箱内共栖六周后,溪蟹并殖吸虫感染率可达到90%以上,远远超过目前自然感染率,完全能满足实验室研究感染并殖吸虫溪蟹的需要。
随着川卷螺体内不断成熟尾蚴的逸出,溪蟹并殖吸虫尾蚴感染率逐渐上升,川卷螺与溪蟹在饲养繁殖箱内共栖六周后,溪蟹并殖吸虫感染率可达到90%以上,远远超过目前自然感染率,完全能满足实验室研究感染并殖吸虫溪蟹的需要。
具体实施方式
本领域技术人员将会理解,下列实施例仅用于说明本发明,而不应视为限定本发明的范围。实施例中未注明具体技术或条件者,按照本领域内的文献所描述的技术或条件或者按照产品说明书进行。所用试剂或仪器未注明生产厂商者,均为可以通过购买获得的常规产品。
实施例1
1.收集实验室感染并殖吸虫大鼠100天以上的镜检有虫卵的粪便,每20g粪便加180ml清水融化后轻轻震荡摇匀过五号药筛(180μm±7.6μm)充分过滤粪便颗粒,让虫卵顺利通过五号药筛,通过五号药筛含虫卵的液体再过9药号药筛(75±4.1um),保证并殖吸虫的虫卵附着在9药号筛上,附着虫卵的9药号筛及时用保鲜袋密封保存在(16-20℃)闭光环境下保存备用,时间不超过24小时。
2. 川卷螺的并殖吸虫尾蚴感染
2.1建立川卷螺饲养水池(1mm不锈钢板制成)长100×宽60×高30cm水深20cm;
2.2每个水池投放川卷螺80个,水池水面始终保持20棵水白菜,保障川卷螺吸附和食用,同时利用水白菜发达的根系消耗水中氮,防止水体富营养化;
2.3将附着有并殖吸虫虫卵的24小时内9药号筛放于川卷螺饲养水池,用毛刷轻轻刷洗,让虫卵充分进入川卷螺饲养水池中;
2.4川卷螺饲养水池水温保持在18-23℃,保证并殖吸虫虫卵充分孵化为毛蚴,并殖吸虫虫卵进入川卷螺饲养水池中两周后每天驱赶川卷螺一次,让川卷螺迁移运动增加毛蚴侵入川卷螺体的机会。
3.将感染并殖吸虫三周以上的川卷螺转移到溪蟹饲养繁殖箱(长100×宽60×高30cm)的水池中,每个饲养繁殖箱投入人工繁殖的体重20-30g溪蟹100只。
实施例2:
1.收集实验室感染并殖吸虫大鼠100天以上的镜检有虫卵的粪便,每20g粪便加180ml清水融化后轻轻震荡摇匀过五号药筛(180μm±7.6μm)充分过滤粪便颗粒,让虫卵顺利通过五号药筛,通过五号药筛含虫卵的液体再过9药号药筛(75±4.1um),保证并殖吸虫的虫卵附着在9药号筛上,附着虫卵的9药号筛及时用保鲜袋密封保存在(16-20℃)闭光环境下保存备用,时间不超过24小时。
2. 川卷螺的并殖吸虫尾蚴感染
2.1建立川卷螺饲养水池(1mm不锈钢板制成)长100×宽60×高30cm水深20cm;
2.2每个水池投放川卷螺60个,水池水面始终保持15棵水白菜,保障川卷螺吸附和食用,同时利用水白菜发达的根系消耗水中氮,防止水体富营养化;
2.3将附着有并殖吸虫虫卵的24小时内9药号筛放于川卷螺饲养水池,用毛刷轻轻刷洗,让虫卵充分进入川卷螺饲养水池中;
2.4川卷螺饲养水池水温保持在18-23℃,保证并殖吸虫虫卵充分孵化为毛蚴,并殖吸虫虫卵进入川卷螺饲养水池中两周后每天驱赶川卷螺一次,让川卷螺迁移运动增加毛蚴侵入川卷螺体的机会。
3.将感染并殖吸虫三周以上的川卷螺转移到溪蟹饲养繁殖箱(长100×宽60×高30cm)的水池中,每个饲养繁殖箱投入人工繁殖的体重20-30g溪蟹80只。
随着川卷螺体内不断成熟尾蚴的逸出,溪蟹并殖吸虫尾蚴感染率逐渐上升,川卷螺与溪蟹在饲养繁殖箱内共栖六周后,溪蟹并殖吸虫感染率可达到90%以上,远远超过目前自然感染率,完全能满足实验室研究感染并殖吸虫溪蟹的需要。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权
利要求书及其等效物界定。
Claims (3)
1.一种实验室溪蟹感染并殖吸虫的方法,其特征在于:按以下步骤进行:
1)收集实验室感染并殖吸虫大鼠100天以上的镜检有虫卵的粪便,每20g粪便加180ml清水融化后轻轻震荡摇匀过五号药筛,充分过滤粪便颗粒,让虫卵顺利通过五号药筛,通过五号药筛的含虫卵液体再过9号药筛,保证并殖吸虫的虫卵附着在9号药筛上,附着虫卵的9号药筛及时用保鲜袋密封保存在16-20℃闭光环境下保存备用,备用时间不超过24小时;
2)川卷螺的并殖吸虫尾蚴感染
(1)建立川卷螺饲养水池;
(2)每个水池投放川卷螺60-80个,水池水面始终保持15-20棵水白菜,保障川卷螺吸附和食用,同时利用水白菜发达的根系消耗水中氮,防止水体富营养化;
(3)将附着有并殖吸虫虫卵的24小时内9药号筛放于川卷螺饲养水池,用毛刷轻轻刷洗,让虫卵充分进入川卷螺饲养水池中;
(4)川卷螺饲养水池水温保持在18-23℃,保证并殖吸虫虫卵充分孵化为毛蚴,并殖吸虫虫卵进入川卷螺饲养水池中两周后每天驱赶川卷螺一次,让川卷螺迁移运动增加毛蚴侵入川卷螺体的机会;
3)将感染并殖吸虫三周以上的川卷螺转移到溪蟹饲养繁殖箱水池中,每个饲养繁殖箱投入人工繁殖的体重2-30g溪蟹80-100只,随着川卷螺体内不断成熟尾蚴的逸出,溪蟹并殖吸虫尾蚴感染率逐渐上升,川卷螺与溪蟹在饲养繁殖箱内共栖六周以上,确保溪蟹并殖吸虫感染率可达到90%以上。
2.根据据权利要求1所述的实验室溪蟹感染并殖吸虫的方法,其特征在于:所述水池用1mm不锈钢板制成,长100×宽60×高30cm,水深20cm。
3.根据据权利要求1所述的实验室溪蟹感染并殖吸虫的方法,其特征在于:所述溪蟹饲养繁殖箱长100×宽60×高30cm。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090054313A (ko) * | 2007-11-26 | 2009-05-29 | 원광대학교산학협력단 | 폐흡충 특이 항원의 생산을 위한 단클론 항체 및 폐흡충증신속 진단 키트 |
| CN101956013A (zh) * | 2010-09-29 | 2011-01-26 | 中国疾病预防控制中心寄生虫病预防控制所 | 一种快速检测卫氏并殖吸虫的试剂盒和方法 |
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2020
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|---|---|---|---|---|
| KR20090054313A (ko) * | 2007-11-26 | 2009-05-29 | 원광대학교산학협력단 | 폐흡충 특이 항원의 생산을 위한 단클론 항체 및 폐흡충증신속 진단 키트 |
| CN101956013A (zh) * | 2010-09-29 | 2011-01-26 | 中国疾病预防控制中心寄生虫病预防控制所 | 一种快速检测卫氏并殖吸虫的试剂盒和方法 |
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| 孟昭赫: "《食品卫生检验方法注解 微生物学部分食品卫生检验方法注解 微生物学部分食品卫生检验方法注解 微生物学部分食品卫生检验方法注解 微生物学部分》", 30 June 1990, 北京:人民卫生出版社 * |
| 林本翔等: "政和县并殖吸虫病病原学调查", 《热带医学杂志》 * |
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