摩洛哥马拉喀什城市土壤弓形虫卵囊发生情况的首次调查

IF 0.4 4区医学 Q4 PARASITOLOGY

Comparative Parasitology Pub Date : 2020-05-21 DOI:10.1654/1525-2647-87.1.99

Salma Berrouch, Hasna Ajgoune, L. Hoummadi, Yassine Amraouza, A. Maarouf, A. Boularbah, Brahim Admou, J. Hafid

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引用次数: 3

摘要

摘要：人类可能因意外摄入受污染的生肉、水、水果和蔬菜，或直接接触受污染的土壤而感染环境中释放的弓形虫卵囊以及猫的粪便。记录弓形虫卵囊对土壤的污染程度对于防止这种原生动物引起的感染是必要的。我们研究的目的是确定弓形虫卵囊在摩洛哥马拉喀什城市土壤中的发生情况。共从马拉喀什市区的9个地点采集了42个土壤样本。卵囊采用浮选法提取，并通过亮场和紫外显微镜进行检测。考虑到可能影响污染模式的因素，如猫的存在和卵囊的生存条件，分析了弓形虫在土壤中的频率和空间分布。马拉喀什的所有分析土壤样本均为阴性。本研究的结果与我们检测方法的灵敏度以及猫的存在有关，猫是这种寄生虫的主要宿主。此外，温度、湿度和土壤成分会显著影响卵囊的存活，从而影响人类通过食物污染的可能性。

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First Investigation of The Occurrence of Toxoplasma gondii Oocysts in Urban Soil in Marrakesh, Morocco

abstract: Humans can become infected by Toxoplasma gondii oocysts released in the environment along with felid feces through the accidental ingestion of contaminated raw meat, water, fruits and vegetables, or through direct contact with contaminated soil. Documenting the extent of soil contamination by T. gondii oocysts is necessary to prevent infection caused by this protozoan. The aim of our study is to determine the occurrence of T. gondii oocysts in urban soil in Marrakesh, Morocco. A total of 42 soil samples were collected from 9 sites in the urban area of Marrakesh. Oocysts were extracted by the flotation method, and detected by microscopy using both bright-field and UV. The frequency and spatial distribution of T. gondii in soil were analyzed considering the factors that could affect the mode of contamination, such as the presence of cats and the survival conditions of oocysts. All analyzed soil samples from Marrakesh were negative. The results of the present study are correlated to the sensitivity of our detection method as well as the presence of cats, the main reservoir of this parasite. In addition, temperature, moisture, and soil composition can significantly influence oocysts survival, and consequently affect the probability of human contamination through food.

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来源期刊

Comparative Parasitology 医学-动物学

CiteScore

1.00

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Comparative Parasitology (continuing the Journal of the Helminthological Society of Washington in its 67th volume) focuses on parasitological research of a comparative nature, emphasizing taxonomy, systematics, ecology, biogeography, evolution, faunal survey, and biological inventory within a morphological and/or molecular context. The scope of Comparative Parasitology extends to all parasitic faunas, including helminths, protistans and arthropods.