肺吸虫、曼氏绦虫、带绦虫、细粒棘球绦虫邹ppt课件

1、worked out by Kobayashi and Yokagawa. The major focus of infection today remains in the Orient, including India and the Philippines. It also appears to be endemic throughout the East Indies, New Guinea, the Solomon Islands, Samoa, western Africa, Peru, Colombia, and Venezuela. The taxonomy of the ge

2、nus is difficult, and some of these reports may be of other, closely related species. Paragonimiasis is an excellent example of zoonosis.卵巢卵巢子子宫宫睾丸睾丸卵卵 黄黄 腺腺子子宫宫毛蚴毛蚴胞蚴胞蚴川卷螺川卷螺成虫成虫肺肺人、犬、人、犬、猫、虎等猫、虎等 囊蚴囊蚴入水入水痰、粪便痰、粪便溪蟹溪蟹 野猪、野鼠野猪、野鼠卵卵 The early, invasion stages of paragonimiasis cause few or no symptom

3、atic pathological conditions. Once in a lung or an ectopic site, the worm stimulates connective tissue proliferation that eventually will enshroud it in a brownish or bluish capsule. Such capsules often ulcerate and heal slowly. Eggs in surrounding tissues will themselves become centers of pseudotub

4、ercles. Worms in the spinal cord are known to cause paralysis, which sometimes is total. Fatal cases of Paragonimus in the heart have been recorded. Cerebral cases have the same results as those of cerebral cysticercosis. Pulmonary cases usually cause chest symptoms ,with breathing difficulties, chr

5、onic cough, and sputum containing blood or brownish streaks. Fatal cases are common.毛蚴毛蚴胞蚴胞蚴川卷螺川卷螺成虫成虫肺肺人、犬、人、犬、猫、虎等猫、虎等 囊蚴囊蚴入水入水痰、粪便痰、粪便溪蟹溪蟹 野猪、野鼠野猪、野鼠卵卵123传染源卵巢卵巢子子宫宫睾丸睾丸卵卵 黄黄 腺腺卫氏并殖吸虫卫氏并殖吸虫第一中间宿主第一中间宿主斯氏狸殖吸虫斯氏狸殖吸虫终宿主终宿主P131 About 60-100 centimeter About 100 proglottidsbothrium钩球蚴钩球蚴随粪入水随粪入水成虫成虫小肠

6、小肠猫、犬、人猫、犬、人卵卵 人、蛇、鸟、猪食入人、蛇、鸟、猪食入蛙蛙剑水蚤剑水蚤蝌蚪、人蝌蚪、人Adult worms occasionally reside in humans.猪带绦虫猪带绦虫牛带绦虫牛带绦虫p132六钩蚴六钩蚴成虫成虫小肠小肠人人孕节孕节( (卵卵) )随血流随血流囊尾蚴囊尾蚴肌肉肌肉 经口经口六钩蚴六钩蚴囊尾蚴囊尾蚴六钩蚴六钩蚴成虫成虫小肠小肠人人孕节孕节( (卵卵) )随血流随血流囊尾蚴囊尾蚴肌肉肌肉 经口经口Infective stageDiagnostic stageOncospheres hatch,penetrate intestinal wall,and

7、circulate to musculatureOncospheres develop into cysticerci in muscle Humans infected by ingesting raw or undercooked infected meatEggs or gravid proglottids in feces and passed into environmentScolex attaches to intestineAdults in small intestineT.saginata T.solium Cattle and pigs become infected b

8、y ingesting vegetation contaminated by eggs or gravid proglottids细粒棘球绦虫包生绦虫细粒棘球绦虫包生绦虫 Echinococcus granulosusMorphology成成 虫虫头节头节幼节幼节成节成节孕节孕节棘棘 球球 蚴蚴棘棘 球球 蚴蚴 实实 物物棘棘 球球 蚴蚴虫卵：与猪带、牛带绦虫卵根本一样虫卵：与猪带、牛带绦虫卵根本一样Life cycle虫卵虫卵棘球蚴棘球蚴 成虫成虫犬、食肉动物犬、食肉动物血循环血循环羊、牛等动物内脏羊、牛等动物内脏六钩蚴六钩蚴犬食入犬食入人、羊、牛人、羊、牛生活史特点：生活史特点：1 1、终宿主：犬、狼、豺等；、终宿主：犬、狼、豺等；2 2、中间宿主：羊、牛、骆驼、猪、鹿等，偶有马、人；、中间宿主：羊、牛、骆驼、猪、鹿等，偶有马、人；3 3、感染方式：误食入了孕节或虫卵；、感染方式：误食入了孕节或虫卵；4 4、棘球蚴在人体内主要寄生部位：肝、肺、腹腔、脑等、棘球蚴在人体内主要寄生部位：肝、肺、腹腔、脑等致致 病病1 1、部分压迫和刺激病症：肝、肺等、部分压迫和刺激病症：肝、肺等2 2、中毒和过敏病症、中毒和过敏病症诊诊 断断1 1、讯问病史、讯问病史2 2、X X线、线、CTCT、MRIMR