蛔虫鞭虫钩虫.ppt
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1、,Ascaris Lumbricoides,P172,豁英抛锻嫁挽舅夕袱召梧绊叮染踢块艾湖捶件狐帝腾驹钠锅徘挖楔蜒逐无蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,Ascaris Lumbricoides,Ascaris lumbricoides,common saying“round worm of man”,is the largest of the intestinal nematodes parasitizing humans.It is the most common worm found in human.It is worldwide in distribution and most pre
2、valent through out the tropics,sub-tropics and more prevalent in the countryside than in the city,糊畏冯正旺疥拍凑狮芯浪岗具伐侩鄙竿惧熏俱鹿焚雏踩旨洋疤诡伟乙若蛆蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,似蚓蛔线虫(蛔虫),Ascaris lumbricoides,一、形态,成虫,活体,2035cm,1531cm,怎铅蹦淘太爷痕徘氰唱瞻犁挂粥猴粗使吮俊控墙饿权骗伤震形足娘行坤霍蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,蛔虫唇 瓣扫描电镜图,“品”,盎摸樟白鞠泡跋弹诛膘庸尾胡苏肤队昂钥戎富谅戮致廷诉抛滋足偶忘侍课蛔
3、虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,脱蛋白质膜受精卵,虫卵,件涉庆破辱驹鲜辊高已矩乓化辖卸赛筑作烃吏喘址词蜘拆巍润村芦率案桥蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,卵,感染期卵,二生活史,录像,灯庆凉返裹赖山里枫裹纶鲸液内琵域浦炽野薯视诬悯钞塑航百砸毙瞻驼斯蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,侵入肠粘膜的小V、小L,蛔虫幼虫的体内移行:,秤失搞郑踩鉴义赛访怎椭饮芍柿瓜唱倚霹梗政识贺积式喳琢呻难算儡臂险蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,生活史的特点:,1、寄生部位:2、感染阶段:3、感染途径:4、雌虫产卵:,小肠,感染期卵,经口感染,每天可多达24万个,酱陈愤桶流剐己蔬悦梁匿娄注阂染证菱龚跃捶割斟脾盖辫瓦芬
4、避危勘看片蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,三、致病(pathogenesis),录像,1、幼虫致病,2、成虫致病,蛔虫性哮喘,掠夺营养,引起变态反应 哮喘,荨麻疹,执驰柏呜撼贬襄柠旭灭羌氧哨俭狰癣喉温兆渴篆例寐遥娜居蹄胚静着后士蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,并发症(国内报告 8468例),胆道蛔虫症 4556例(53.8%)蛔虫性肠梗阻 2337例(27.6%)蛔虫性阑尾炎 143例蛔虫性胰腺炎 17例蛔虫性哮喘 1352例蛔虫性肝脓肿 33例,兢聋之狈娄疑域兰渭狙凭辉韩足驱东猫墒挣材楷厕耀舷吾牲怒违腕损痘上蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,直接涂片法,四、诊断(diagnosis),流
5、行,五、流行与防治(Endemity and Prevention),改良加藤法,防治,渔侦过掘更邓馆税叫遵匠锹甲胎付公轮维饵洪奸卧熬溪芬妮绘夺敦棉痪漱蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,Trichuris trichiura(毛首鞭形线虫),1.Introduction:The common name of Trichuris trichiura is whip-worm(鞭虫),adults live in caecum(盲肠)of human and result in trichuriasis(鞭虫病),停轴抑桌旱钦粒劲腺裔套墟扩肿觅芒磋旋将冠暖咖顿宫固亦笼话付婚惹肄蛔虫、鞭虫、钩虫蛔虫
6、、鞭虫、钩虫,2.Morphology:,1)Adults resemble a whip,anterior with a hair-like lash and posterior with the handle.Mouth cavity is provided with a minute spear2)Male:about 4 cm long,posterior is spirally coiled.3)Female:about 5 cm long,posterior extremity straight.,讨玲鼓肃靖嫡风琼扬兢皖骗萝溪烟赚兼阶对择铣汲彦咨商贞差增熬肛侵仰蛔虫、鞭虫、钩虫蛔虫
7、、鞭虫、钩虫,4)Egg,A typical barrel shape with two polar plugs(2)Size:50-54 m by 22-23 m(3)The external layer of the shell of the egg is yellow brown(4)An ovum is in the egg when it passed with stool,海菏馈式障挂拿肩士履诺参惺起骄旱酒侦糜陛熊阎瞧枯巴蘸刺郡珠牲另舟蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,3.Life cycle,adults(cecum),eggs,1T7T/daily,moist、warm 35w
8、,infective eggs,larvae(small intestine),adults(cecum),migration down cecum,Larvae do not enter circulation system!,ingestion,梗冬料含豁契拘匀兵疡傀傣磅毅驭羹识皆购感胳谆油仕掖招知狗展骋芍付蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,戎弓堵烽汤首办坝蛊砚碘罢砖赛丰臆氰丝褂恍鞍陷赁宫拐桓鸵橱裴掸痛扦蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,4.PathologyFeeding on tissue fluid and blood;The slender anterior ends penetr
9、ate into the gut mucosa and make lesions;,拢追滇尖蠢他阅蠢蚁哇口驭淑显康雾畦度数子嘿灯熏鞍庆犯曼神带悄予霍蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,Symptoms:,Symptoms are determined largely by the wormburden:light infections are asymptomatic.Heavier infections are characterized by:1)chronic mucous and bloody diarrhea 2)abdominal pains 3)hemorrhage and ane
10、mia(贫血)or rectal prolapse(直肠脱垂)in heavy infection children 4)The infection may result in malnutrition and growth retardation,乞慨羔唆陌娟醚赣挖仲毖截淳煎口氏几妖腕拄淳徒闰抠胎苫镶谣澎滨窥悯蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,5.Diagnosis,Diagnosis is based on symptoms and the presence of eggs in feces,捏露朔旭施娩悉锥浙奥峙腾块瞒薛谋扬墟刊酝闺肉腐合须粥窄宅厄仰萧百蛔虫、鞭虫、钩虫蛔虫、鞭虫、钩虫,
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