肺吸蟲、曼氏絳蟲、帶絳蟲、細(xì)粒棘球絳蟲鄒ppt課件

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.卵巢卵巢子子宮宮睪丸睪丸卵卵 黃黃 腺腺子子宮宮毛蚴毛蚴胞蚴胞蚴川卷螺川卷螺成蟲成蟲肺肺人、犬、人、犬、貓、虎等貓、虎等 囊蚴囊蚴入水入水痰、糞便痰、糞便溪蟹溪蟹 野豬、野鼠野豬、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蟲成蟲肺肺人、犬、人、犬、貓、虎等貓、虎等 囊蚴囊蚴入水入水痰、糞便痰、糞便溪蟹溪蟹 野豬、野鼠野豬、野鼠卵卵123傳染源卵巢卵巢子子宮宮睪丸睪丸卵卵 黃黃 腺腺衛(wèi)氏并殖吸蟲衛(wèi)氏并殖吸蟲第一中間宿主第一中間宿主斯氏貍殖吸蟲斯氏貍殖吸蟲終宿主終宿主P131 About 60-100 centimeter About 100 proglottidsbothrium鉤球蚴鉤球蚴隨糞入水隨糞入水成蟲成蟲小腸

6、小腸貓、犬、人貓、犬、人卵卵 人、蛇、鳥、豬食入人、蛇、鳥、豬食入蛙蛙劍水蚤劍水蚤蝌蚪、人蝌蚪、人Adult worms occasionally reside in humans.豬帶絳蟲豬帶絳蟲牛帶絳蟲牛帶絳蟲p132六鉤蚴六鉤蚴成蟲成蟲小腸小腸人人孕節(jié)孕節(jié)( (卵卵) )隨血流隨血流囊尾蚴囊尾蚴肌肉肌肉 經(jīng)口經(jīng)口六鉤蚴六鉤蚴囊尾蚴囊尾蚴六鉤蚴六鉤蚴成蟲成蟲小腸小腸人人孕節(jié)孕節(jié)( (卵卵) )隨血流隨血流囊尾蚴囊尾蚴肌肉肌肉 經(jīng)口經(jīng)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細(xì)粒棘球絳蟲包生絳蟲細(xì)粒棘球絳蟲包生絳蟲 Echinococcus granulosusMorphology成成 蟲蟲頭節(jié)頭節(jié)幼節(jié)幼節(jié)成節(jié)成節(jié)孕節(jié)孕節(jié)棘棘 球球 蚴蚴棘棘 球球 蚴蚴 實(shí)實(shí) 物物棘棘 球球 蚴蚴蟲卵：與豬帶、牛帶絳蟲卵根本一樣蟲卵：與豬帶、牛帶絳蟲卵根本一樣Life cycle蟲卵蟲卵棘球蚴棘球蚴 成蟲成蟲犬、食肉動物犬、食肉動物血循環(huán)血循環(huán)羊、牛等動物內(nèi)臟羊、牛等動物內(nèi)臟六鉤蚴六鉤蚴犬食入犬食入人、羊、牛人、羊、牛生活史特點(diǎn)：生活史特點(diǎn)：1 1、終宿主：犬、狼、豺等；、終宿主：犬、狼、豺等；2 2、中間宿主：羊、牛、駱駝、豬、鹿等，偶有馬、人；、中間宿主：羊、牛、駱駝、豬、鹿等，偶有馬、人；3 3、感染方式：誤食入了孕節(jié)或蟲卵；、感染方式：誤食入了孕節(jié)或蟲卵；4 4、棘球蚴在人體內(nèi)主要寄生部位：肝、肺、腹腔、腦等、棘球蚴在人體內(nèi)主要寄生部位：肝、肺、腹腔、腦等致致 病病1 1、部分壓迫和刺激病癥：肝、肺等、部分壓迫和刺激病癥：肝、肺等2 2、中毒和過敏病癥、中毒和過敏病癥診診 斷斷1 1、訊問病史、訊問病史2 2、X X線、線、CTCT、MRIMR