刚地弓形虫孢子化卵囊在海水中的长期存活。

Long-term survival of Toxoplasma gondii sporulated oocysts in seawater.

作者信息

Lindsay David S, Dubey J P

机构信息

Center for Molecular Medicine and Infectious Diseases, Department of Biomedical Sciences and Pathology, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Tech, 1410 Prices Fork Road, Blacksburg, Virginia 24061, USA.

出版信息

J Parasitol. 2009 Aug;95(4):1019-20. doi: 10.1645/GE-1919.1.

DOI:10.1645/GE-1919.1

PMID:20050010

Abstract

Toxoplasma gondii is now recognized as an important pathogen in costal marine mammals. Oocysts from cat feces are believed to be washed into seawater and serve as a source of infection via transport hosts. Experimentally, it has been demonstrated that T. gondii oocysts can sporulate in seawater and remain infectious for mice for up to 6 mo. The present study examined the long-term survival of T. gondii in seawater (15 ppt NaCl) kept at 4 C or at room temperature. Oocysts kept at 4 C for 24 mo were orally infectious for mice, while those kept at room temperature for 24 mo were not.

摘要

刚地弓形虫现在被认为是沿海海洋哺乳动物中的一种重要病原体。猫粪便中的卵囊被认为会被冲入海水中，并通过转运宿主作为感染源。实验表明，刚地弓形虫卵囊可在海水中孢子化，并对小鼠保持长达6个月的传染性。本研究检测了刚地弓形虫在4℃或室温下保存于海水（15‰氯化钠）中的长期存活情况。在4℃保存24个月的卵囊对小鼠具有经口传染性，而在室温下保存24个月的卵囊则没有。