Veys A, Callewaert W, Waelkens E, Van den Abbeele K
Clinical Laboratory, Clinique Saint-Michel, Brussels, Belgium.
J Clin Microbiol. 1989 Jul;27(7):1538-42. doi: 10.1128/jcm.27.7.1538-1542.1989.
A total of 430 strains of glucose-nonfermenting gram-negative bacteria representing 35 species were analyzed for their cellular fatty acid composition by gas-liquid chromatography (GLC). On the basis of qualitative differences in their cellular fatty acid composition, these bacteria could be divided into 19 distinct chromatographic groups. Eight Pseudomonas species, Achromobacter xylosoxidans, group Vd, and Agrobacterium radiobacter were identified from their fatty acid compositions alone. The other glucose-nonfermenting gram-negative bacterial species studied here, classified within nine distinct GLC groups, were easily recognized by using the GLC fatty acid analysis supplemented with a limited number of conventional biochemical tests. The results support the hypothesis that bacterial fatty acid composition is rather specific and that qualitative GLC fatty acid analysis can be adapted in the clinical laboratory either to provide additional criteria for differentiation of closely related groups or to serve as a rapid and highly reproducible method for their routine identification.
采用气液色谱法(GLC)分析了总共430株代表35个菌种的葡萄糖非发酵革兰氏阴性菌的细胞脂肪酸组成。基于其细胞脂肪酸组成的定性差异,这些细菌可分为19个不同的色谱组。仅从其脂肪酸组成就鉴定出了8种假单胞菌、木糖氧化无色杆菌、Vd组和放射形土壤杆菌。这里研究的其他葡萄糖非发酵革兰氏阴性菌种,归入9个不同的GLC组,通过使用GLC脂肪酸分析并辅以有限数量的常规生化试验很容易识别。结果支持这样的假设,即细菌脂肪酸组成相当特异,定性GLC脂肪酸分析可在临床实验室采用,要么为密切相关菌群的鉴别提供额外标准,要么作为其常规鉴定的快速且高度可重复的方法。