Microbiology Department, Consorcio Hospital General Universitario de Valencia, Av. De les Tres Creus, 2, 46014 Valencia, Spain.
Microbiology Department, Consorcio Hospital General Universitario de Valencia, Av. De les Tres Creus, 2, 46014 Valencia, Spain.
Diagn Microbiol Infect Dis. 2020 Dec;98(4):115168. doi: 10.1016/j.diagmicrobio.2020.115168. Epub 2020 Aug 16.
A shift to Candida non-albicans infections has been noted during the last years, and the emergence of multi-resistant Candida auris has complicated their management. The aim of this study was first to compare the performance of the novel chromogenic medium CHROMagar™ Candida Plus (CHROMagar, France) with CHROMagar™ Candida (Becton Dickinson, Germany) for the presumptive identification of Candida species; and then, to evaluate its utility in the detection of C. auris in surveillance samples. CHROMagar™ Candida Plus showed a good performance compared with the reference medium CHROMagar™ Candida. Sensitivity and specificity were 100% in both media for tested species at 48 h of incubation, except for Candida glabrata and Candida lusitaniae. Furthermore, the new medium allows a reliable presumptive identification of C. auris, as a new specific color for this species is assigned (light blue with a blue halo), obtaining a sensitivity and specificity of 100% at 36 h of incubation.
近年来,人们注意到非白念珠菌感染的转变,而多耐药性的耳念珠菌的出现使它们的管理更加复杂。本研究的目的首先是比较新型显色培养基 CHROMagar™ Candida Plus(CHROMagar,法国)与 CHROMagar™ Candida(Becton Dickinson,德国)在疑似鉴定念珠菌属方面的性能;然后,评估其在监测样本中检测耳念珠菌的应用。与参考培养基 CHROMagar™ Candida 相比,CHROMagar™ Candida Plus 表现出良好的性能。在 48 小时孵育时,两种培养基对测试菌株的灵敏度和特异性均为 100%,除了光滑念珠菌和葡萄牙念珠菌。此外,新培养基可以可靠地对耳念珠菌进行初步鉴定,因为为该菌株分配了一个新的特定颜色(浅蓝色带蓝色晕圈),在 36 小时孵育时获得了 100%的灵敏度和特异性。