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首页> 外文期刊>Journal of Parasitology >Cystoisospora canis Nemeseri, 1959 (syn. Isospora canis), infections in dogs: clinical signs, pathogenesis, and reproducible clinical disease in beagle dogs fed oocysts.
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Cystoisospora canis Nemeseri, 1959 (syn. Isospora canis), infections in dogs: clinical signs, pathogenesis, and reproducible clinical disease in beagle dogs fed oocysts.

机译：犬夜蛾Cystoisospora canis Nemeseri，1959年（犬Isospora canis），犬感染：用卵囊喂养的比格犬的临床体征，发病机制和可再现的临床疾病。

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Canine intestinal coccidiosis is a cause of diarrhea in young dogs and dogs that are immunocompromised. Reports in the literature indicate that experimental reproduction of clinical coccidiosis with Cystoisospora canis (syn. Isospora canis) is difficult, and few studies have been done with C. canis. Experimental oral infections were attempted in 22, 6- to 8-wk-old female beagles with 5 x 10(4) (n = 2) or 1 x 10(5) (n = 20) sporulated C. canis oocysts. Diarrhea was observed in all inoculated dogs. Diarrhea began 2-3 days before oocyst excretion. Five of the 22 dogs were given an anticoccidial (sulfadimethoxine) because of their clinical signs. The mean prepatent period was 9.8 days (range, 9-11 days, n = 22 dogs), and the patent period was 8.9 days (range, 7-18 days, n = 20 dogs). Two dogs exhibiting clinical coccidiosis were examined at necropsy 10 days after infection. Developmental stages of C. canis were present in cells in the lamina propria throughout the entire small intestine in both dogs. Microscopic lesions observed in both of these dogs were villous atrophy, dilation of lacteals, and hyperplasia of lymph nodes in Peyer's patches. Results of bacterial and viral examinations of these 2 dogs were negative, indicating that intestinal coccidiosis was the cause of the diarrhea. Our study indicates that C. canis can be a primary cause of diarrhea in young dogs.
机译：犬肠球虫病是幼犬和免疫力低下的犬腹泻的原因。文献中的报道表明，犬蓝藻（Cystoisospora canis）的临床球虫病的实验繁殖是困难的，并且对犬梭状芽胞杆菌的研究很少。尝试在22只6至8周大的雌性小猎犬中感染5 x 10（4）（n = 2）或1 x 10（5）（n = 20）孢子形成的犬小卵囊。在所有接种的狗中都观察到腹泻。卵囊排泄前2-3天开始腹泻。由于其临床体征，在22只狗中有5只被给予了抗球虫药（磺胺二甲嘧啶）。平均预备期为9.8天（范围为9-11天，n = 22只狗），专利期为8.9天（范围为7-18天，n = 20只狗）。在感染后10天的尸检中检查了两只表现出临床球虫病的狗。在两只狗的整个小肠中，固有层的细胞都存在犬小肠梭菌的发育阶段。在这两只狗中观察到的微观病变是绒毛萎缩，乳头扩张和派伊尔氏淋巴结中淋巴结增生。这两只狗的细菌和病毒检查结果均为阴性，表明肠道球虫病是引起腹泻的原因。我们的研究表明，犬小肠结肠炎可能是幼犬腹泻的主要原因。

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