肺吸虫、曼氏绦虫、带绦虫、细粒棘球绦虫.ppt
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1、ParagonimuswestermaniParagonimuswesternaniwas first described from two Bengal tiger that had died in zoos in Europe in 1878.During the next 2 years,infections by this worm in humans were found in Furmosa.It was very quickly found in the lungs,brain,and viscera of humans in Japan,Korea,and the Philip
2、pines.The life cycle was 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 taxo
3、nomy of the genus is difficult,and some of these reports may be of other,closely related species.Paragonimiasis is an excellent example of zoonosis.并殖吸虫Paragonimus westermaniParagonimus westermani卫氏并殖吸虫PagPagumogonimus skrjabiniumogonimus skrjabini 斯氏狸殖吸虫人兽共患型人兽共患型兽主人次型兽主人次型卫氏并殖吸虫(肺吸虫)(肺吸虫)Paragonim
4、us westermaniParagonimus westermani卵巢卵巢子子宫宫睾丸睾丸卵卵 黄黄 腺腺一、形态一、形态成成成成虫虫虫虫卵黄腺卵黄腺卵黄腺卵黄腺肠支肠支肠支肠支口吸盘口吸盘口吸盘口吸盘睾丸睾丸睾丸睾丸腹吸盘腹吸盘腹吸盘腹吸盘子子宫宫中等大小中等大小中等大小中等大小不规则椭圆形不规则椭圆形不规则椭圆形不规则椭圆形金黄色金黄色金黄色金黄色1 1个卵细胞、个卵细胞、个卵细胞、个卵细胞、1010多个卵黄细胞多个卵黄细胞多个卵黄细胞多个卵黄细胞卵壳厚薄不一卵壳厚薄不一卵壳厚薄不一卵壳厚薄不一卵盖大、常倾斜、卵盖大、常倾斜、卵盖大、常倾斜、卵盖大、常倾斜、也可缺如也可缺如也可缺如也可
5、缺如大小大小大小大小形状形状形状形状颜色颜色颜色颜色卵壳卵壳卵壳卵壳内容物内容物内容物内容物其他其他其他其他虫卵虫卵卵细胞卵细胞卵细胞卵细胞卵盖卵盖卵盖卵盖卵壳卵壳卵壳卵壳卵黄细胞卵黄细胞卵黄细胞卵黄细胞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)体内移行体内移行体内移行体内移行穿肠壁穿肠壁穿肠壁穿肠壁肺肺肺肺穿膈肌穿膈肌穿膈肌穿膈肌胸腔胸腔胸腔胸腔腹腔腹腔腹腔腹腔二、生活史二、生活史Life cycleLife cycle母雷蚴母雷蚴母雷蚴母雷蚴子雷蚴子雷蚴子雷蚴子雷蚴尾蚴尾蚴尾蚴尾蚴溪蟹溪蟹滞育童虫滞育童虫滞育童
6、虫滞育童虫(野猪、野鼠)(野猪、野鼠)卵卵窜扰窜扰窜扰窜扰肝、脑、皮下肝、脑、皮下肝、脑、皮下肝、脑、皮下1、感染期:2、感染方式:3、寄生部位:4、终宿主:5、保虫宿主:囊蚴囊蚴囊蚴囊蚴生吃含囊蚴的溪蟹、转续生吃含囊蚴的溪蟹、转续生吃含囊蚴的溪蟹、转续生吃含囊蚴的溪蟹、转续宿主的肉(猪肉)宿主的肉(猪肉)宿主的肉(猪肉)宿主的肉(猪肉)犬、猫、虎犬、猫、虎犬、猫、虎犬、猫、虎人人人人肺、异位寄生肺、异位寄生肺、异位寄生肺、异位寄生三、致病三、致病(pathogenesis)pathogenesis)急急性性期期慢慢性性期期脓肿期脓肿期囊肿期囊肿期纤维疤痕期纤维疤痕期 The early,in
7、vasion stages of paragonimiasis cause few or no symptomatic 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
8、tissues will themselves become centers of pseudotubercles.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 ch
9、est symptoms,with breathing difficulties,chronic cough,and sputum containing blood or brownish streaks.Fatal cases are common.三、致病三、致病(pathogenesis)pathogenesis)临临床床分分型型胸肺型胸肺型腹型腹型皮下包块型皮下包块型脑脊髓型脑脊髓型亚临床型亚临床型其他型其他型录像录像录像录像四、诊断四、诊断(diagnosis)diagnosis)病病原原学学诊诊断断免疫学诊断免疫学诊断痰检虫卵痰检虫卵痰检虫卵痰检虫卵活组织检查活组织检查活组织检查活
10、组织检查粪检虫卵粪检虫卵粪检虫卵粪检虫卵五、流行与防治五、流行与防治(Endemity and Prevention)(Endemity and Prevention)流行流行流行流行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)母雷蚴母雷蚴母雷蚴母雷蚴子雷蚴子雷蚴子雷蚴子雷蚴尾蚴尾蚴尾蚴尾蚴溪蟹溪蟹滞育童虫滞育童虫滞育童虫滞育童虫(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 腺腺一、形态一、形态成成成成虫虫虫虫斯氏狸殖吸虫Pagumogonimus Pagumogonimus skr
11、jabiniskrjabini卫氏并殖吸虫卫氏并殖吸虫第一中间宿主第一中间宿主川卷螺川卷螺斯氏狸殖吸虫斯氏狸殖吸虫拟钉螺拟钉螺终宿主终宿主人,犬,虎人,犬,虎果子狸果子狸第十一章第十一章第十一章第十一章绦绦绦绦 虫虫虫虫(Cestode)第一节第一节概论概论P1312 2、虫体分节、虫体分节3 3、雌雄同体;、雌雄同体;4 4、无消化系统,靠体壁吸收营养。、无消化系统,靠体壁吸收营养。1 1、外形:、外形:头节:头节:颈部:颈部:链体:链体:形态形态(morphology)(morphology)有固着器官有固着器官(吸盘、吸槽吸盘、吸槽吸盘、吸槽吸盘、吸槽)生长节生长节幼节幼节成节成节孕节孕
12、节细长如带、乳白色、背腹扁平、对称;细长如带、乳白色、背腹扁平、对称;细长如带、乳白色、背腹扁平、对称;细长如带、乳白色、背腹扁平、对称;成虫成虫成虫成虫(immature proglottid)(immature proglottid)(mature proglottid)(mature proglottid)(gravid proglottid)(gravid proglottid)肥胖带绦虫肥胖带绦虫幼节幼节成节成节孕节孕节头节头节圆叶目圆叶目假叶目假叶目猪带绦虫猪带绦虫 牛带绦虫牛带绦虫曼氏迭宫绦虫曼氏迭宫绦虫四个吸盘四个吸盘四个吸盘四个吸盘二个吸槽二个吸槽二个吸槽二个吸槽有生殖孔、有
13、生殖孔、有生殖孔、有生殖孔、无无无无子宫孔子宫孔子宫孔子宫孔有生殖孔和子宫孔有生殖孔和子宫孔有生殖孔和子宫孔有生殖孔和子宫孔只有子宫,其余退化只有子宫,其余退化只有子宫,其余退化只有子宫,其余退化与成节结构相似与成节结构相似与成节结构相似与成节结构相似头节:头节:头节:头节:成节:成节:成节:成节:孕节:孕节:孕节:孕节:CyclophyllideaCyclophyllideaPseudophyllideaPseudophyllidea圆叶目圆叶目头节头节头节头节假叶目假叶目头节头节头节头节吸盘吸盘吸盘吸盘吸槽吸槽吸槽吸槽圆圆叶叶目目成节成节成节成节假假叶叶目目 成节成节成节成节圆叶目圆叶目成
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