Fedorko D P, Williams E C
Clinical Pathology Department, Warren G. Magnuson, Clinical Center, National Institutes of Health, Bethesda, Maryland 20892, USA.
J Clin Microbiol. 1997 May;35(5):1258-9. doi: 10.1128/jcm.35.5.1258-1259.1997.
The PRO Disc (Carr-Scarborough Microbiologicals, Inc., Decatur, Ga.) can be used to screen for L-proline-aminopeptidase produced by Clostridium difficile grown on cycloserine-cefoxitin-fructose agar (CCFA). Fifty stored isolates of C. difficile (48 toxin-positive and 2 toxin-negative isolates) and 47 fresh C. difficile isolates (39 toxin-positive and 8 toxin-negative isolates) were all PRO Disc positive. Other Clostridium species that were PRO Disc positive could be differentiated from C. difficile by failure to grow on CCFA, different colonial morphology on CCFA, or morphology upon Gram staining.
PRO检测盘(卡尔-斯卡伯勒微生物公司,佐治亚州迪凯特)可用于筛选艰难梭菌在环丝氨酸-头孢西丁-果糖琼脂(CCFA)上生长时产生的L-脯氨酸氨基肽酶。五十株保存的艰难梭菌分离株(48株毒素阳性和2株毒素阴性分离株)以及47株新鲜的艰难梭菌分离株(39株毒素阳性和8株毒素阴性分离株)均为PRO检测盘阳性。其他PRO检测盘阳性的梭菌属菌种可通过在CCFA上不生长、在CCFA上不同的菌落形态或革兰氏染色后的形态与艰难梭菌区分开来。