Kordalewska Milena, Zhao Yanan, Lockhart Shawn R, Chowdhary Anuradha, Berrio Indira, Perlin David S
Public Health Research Institute, Rutgers Biomedical and Health Sciences, Newark, New Jersey, USA
Public Health Research Institute, Rutgers Biomedical and Health Sciences, Newark, New Jersey, USA.
J Clin Microbiol. 2017 Aug;55(8):2445-2452. doi: 10.1128/JCM.00630-17. Epub 2017 May 24.
is an emerging multidrug-resistant fungal pathogen causing nosocomial and invasive infections associated with high mortality. is commonly misidentified as several different yeast species by commercially available phenotypic identification platforms. Thus, there is an urgent need for a reliable diagnostic method. In this paper, we present fast, robust, easy-to-perform and interpret PCR and real-time PCR assays to identify and related species: , , and Targeting rDNA region nucleotide sequences, primers specific for only or and related species were designed. A panel of 140 clinical fungal isolates was used in both PCR and real-time PCR assays followed by electrophoresis or melting temperature analysis, respectively. The identification results from the assays were 100% concordant with DNA sequencing results. These molecular assays overcome the deficiencies of existing phenotypic tests to identify and related species.
是一种新兴的多重耐药真菌病原体,可引起医院感染和侵袭性感染,死亡率很高。通过市售的表型鉴定平台,它通常被错误鉴定为几种不同的酵母菌种。因此,迫切需要一种可靠的诊断方法。在本文中,我们展示了快速、稳健、易于操作和解读的PCR和实时PCR检测方法,用于鉴定及相关菌种:、、和。针对核糖体DNA(rDNA)区域核苷酸序列,设计了仅针对或及相关菌种的特异性引物。一组140株临床真菌分离株分别用于PCR和实时PCR检测,随后分别进行电泳或熔解温度分析。检测的鉴定结果与DNA测序结果100%一致。这些分子检测方法克服了现有表型检测在鉴定及相关菌种方面的不足。