贵州都匀牛带绦虫亚洲亚种的调查和虫体内元素及氨基酸的检测

目的　了解贵州省都匀市牛带绦虫病的流行因素及病原虫种,并对成虫体内氨基酸组分及元素进行检测。　方法　①对该市河阳乡的米秀村等6个村寨进行牛带绦虫病流行病学调查,对70名现症患者(男性67,女性3)的感染原因、临床症状进行了解分析并作驱虫治疗。②对驱出的成虫作形态学鉴定和测量。③采用氨基酸分析仪、原子吸收光谱仪及分子荧光仪等分别测定成虫体内游离氨基酸组分及各种元素的含量。　结果　①当地牛带绦虫感染主要是因群众喜吃生的或不熟的猪肝引起,患者的临床表现以排节片、肛门瘙痒、腹痛、腹泻等为主。70位有临床症状的成人中,有25人驱出成虫(男性24人,女性1人)。②成虫外形与牛带绦虫极其相似,头节上无顶突及小钩;但虫体较短,大小在0.61～2.58m之间,节片较薄而且数量少。③检测了成虫的16种氨基酸及12种元素。　结论　贵州省都匀有牛带绦虫病局部流行,患者的临床表现与传统的牛带绦虫病相似。根据感染原因和对虫体的测量结果,认为病原体应当是牛带绦虫亚洲亚种(Taeniasaginataasiatica)。

Epidemiological Investigation of Taenia saginata asiatica in Duyun, Guizhou and Detection of Amino Acids and Elements of Adult Worms

OBJECTIVE: To study epidemiological factors of taeniasis and to detect amino acid and element components of adult worms in Duyun of Guizhou Province. METHODS: 1. Traditional methods were used for epidemiological investigation. 2. Automatic amino acid analyzer and bioassay were applied for the detection. RESULTS: Among 70 persons with clinical symptoms, 25 patients (24 men and 1 woman) were found to have adult taenia worms in their faeces after taking Areca catechu L. and other drugs. Sixteen amino acids and 12 elements were determined in adult worms. CONCLUSION: Duyun area in Guizhou is a highly endemic area of taeniasis. The pathogenic parasite is identified as Taenia saginata asiatica. Its clinical symptoms are similar to that of Taenia saginata saginata.