Fungi of the genus Exophiala in tap water - potential etiological factors of phaeohyphomycoses

Fungi of the genus Exophiala in tap water - potential etiological factors of phaeohyphomycoses
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自来水中的外瓶属真菌——暗丝菌病的潜在病因

DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
A. Biedunkiewicz
A. Biedunkiewicz
中科院分区:
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作者:
A. Biedunkiewicz

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前言:真菌引起人们的兴趣,主要是因为它具有广泛的潜在致病性。它们的孢子随空气迁移,也通过空调系统,在文献中已经有了很好的记录。相比之下,到目前为止,关于饮用水供应系统在真菌传播中的作用的调查一直很少,也有争议。绝大多数存在于各种水体中的微真菌是多种表面和器官,有时甚至是全身性真菌病的潜在致病因素。它们在任何水环境中的大量繁殖总是构成流行病学风险。研究目的:本研究的目的是对从自来水中分离到的几种外生真菌进行鉴定,并特别注意它们的潜在致病性。材料和方法:按细菌学分析程序采集水样。真菌学诊断按作者详细说明的程序进行。这项研究从2008年11月进行到2009年3月。每月从“客户”的10个终点站采集一次水样。结果:共检测自来水48升。在众多的酵母样真菌和霉菌群中,观察到形成深棕色菌落的真菌,通常被称为“黑色酵母”。它们的数量达到了近690个殖民地。通过这项研究,能够鉴定出三个子囊菌属(科:草毛菌科)的子囊菌:E.Castellani、E.jeanselmei和E.spinifera。在安全分类中,它们属于BSL-2类,即潜在病原体。它们是甲丝孢霉病的病因,尤其是皮下感染。结论:这项研究证明,饮用水也可能是对人类具有潜在致病性的真菌的重要宿主之一。
Introduction: Fungi arise interest owing to, among other things, a wide spectrum of potential pathogenicity. Migration of their spores with air, also through air-condition systems, has already been well documented in literature. In contrast, investigations addressing the role of drinking water supply systems in fungi transmission have, so far, been sparse and disputable. The vast majority of microfungi occurring in various types of waters are potential etiological factors of multiple surface and organ, and sometimes even systemic, mycoses. Their abundant proliferation in any aquatic environment always poses epidemiological risk. Aim of the study: The objective of the study was to characterize several species of the genus Exophiala isolated from tap water, with special attention paid to their potential pathogenicity. Material and methods: Water samples were collected following procedures adopted for bacteriological analyses. Mycological diagnostics was conducted according to the procedure elaborated by the authors. The study was carried out since November 2008 till March 2009. Water samples were collected once a month from 10 terminal points “at the clients”. Results: In total, 48 liters of tap water were analyzed. Out of the numerous group of yeast-like and mould fungi, fungi forming dark-brown colonies were observed, commonly referred to as “black yeast”. Their count reached nearly 690 colonies. The study enabled identification of three Ascomycota species of the genus Exophiala (family: Herpotrichiellaceae): E. castellani, E. jeanselmei and E. spinifera. In safety classification they belong to BSL-2 class, i.e. to potential pathogens. They are etiological factors of phaeohyphomycoses, and subcutaneous infections in particular. Conclusions: The conducted study proved that drinking water may also constitute one of the significant reservoirs of fungi potentially pathogenic to humans.
Exophiala spinifera 作为皮肤暗色丝孢菌病的原因:案例研究和文献综述。
DOI: 10.1080/13693780802412611
发表时间: 2009
期刊: Medical mycology
影响因子: 2.9
作者:
Harris,JohnE;Sutton,DeannaA;Rubin,Adam;Wickes,Brian;DeHoog,GS;Kovarik,Carrie
通讯作者: Kovarik,Carrie