Abdillah Abdourahim, Khelaifia Saber, Raoult Didier, Bittar Fadi, Ranque Stéphane
Institut de Recherche pour le Développement, Aix Marseille Université, Assistance Publique-Hôpitaux de Marseille, Service de Santé des Armées, VITROME: Vecteurs-Infections Tropicales et Méditerranéennes, 19-21 Boulevard Jean Moulin, 13005 Marseille, France.
IHU Méditerranée Infection, 19-21 Bd Jean Moulin, 13005 Marseille, France.
J Fungi (Basel). 2020 Dec 9;6(4):350. doi: 10.3390/jof6040350.
is a lipid-dependent commensal yeast of the human skin. The different culture media and skin sampling methods used to grow these fastidious yeasts are a source of heterogeneity in culture-based epidemiological study results. This study aimed to compare the performances of three methods of skin sampling, and two culture media for the detection of yeasts by culture from the human skin. Three skin sampling methods, namely sterile gauze, dry swab, and Transwab with transport medium, were applied on 10 healthy volunteers at 5 distinct body sites. Each sample was further inoculated onto either the novel FastFung medium or the reference Dixon agar for the detection of spp. by culture. At least one colony of spp. grew on 93/300 (31%) of the cultures, corresponding to 150 samplings. The positive culture rate was 67%, 18%, and 15% ( < 10), for samples collected with sterile gauze, Transwab, and dry swab, respectively. The positive culture rate was 62% and 38% ( < 0.003) by using the FastFung and the Dixon media, respectively. Our results showed that sterile gauze rubbing skin sampling followed by inoculation on FastFung medium should be implemented in the routine clinical laboratory procedure for spp. cultivation.
是人类皮肤中一种依赖脂质的共生酵母。用于培养这些苛求酵母的不同培养基和皮肤采样方法是基于培养的流行病学研究结果中异质性的一个来源。本研究旨在比较三种皮肤采样方法以及两种用于从人皮肤培养检测酵母的培养基的性能。三种皮肤采样方法,即无菌纱布、干拭子和带有转运培养基的Transwab,应用于10名健康志愿者的5个不同身体部位。每个样本进一步接种到新型FastFung培养基或参考Dixon琼脂上,通过培养检测 spp.。在150次采样对应的300份培养物中,至少有一个 spp. 菌落生长在93/300(31%)的培养物上。分别用无菌纱布、Transwab和干拭子采集的样本,阳性培养率分别为67%、18%和15%(<10)。使用FastFung培养基和Dixon培养基的阳性培养率分别为62%和38%(<0.003)。我们的结果表明,在用于 spp. 培养的常规临床实验室程序中,应采用无菌纱布擦拭皮肤采样然后接种到FastFung培养基上的方法。