Gutmann L, Al-Obeid S, Billot-Klein D, Ebnet E, Fischer W
Laboratoire de Recherche Moléculaire sur les Antibiotiques, Université Paris VI, France.
Antimicrob Agents Chemother. 1996 Jan;40(1):257-9. doi: 10.1128/AAC.40.1.257.
Induction of vancomycin resistance in Enterococcus faecium D366, which exhibits a VanB-type resistance, as well as its constitutive expression in MT9, a derivative of D366, was associated with penicillin tolerance as shown by decreased lysis and killing of the cells. This phenomenon was linked neither to decreased expression of the different autolysins nor to their decreased lytic activity on the different cell walls. The only change observed was that almost twice the normal amount of D-alanine was attached to the lipoteichoic acid.
在表现出VanB型耐药性的屎肠球菌D366中诱导万古霉素耐药性,以及在D366的衍生物MT9中的组成型表达,与青霉素耐受性相关,如细胞裂解和杀伤减少所示。这种现象既不与不同自溶素表达的降低有关,也不与它们对不同细胞壁的裂解活性降低有关。观察到的唯一变化是,与脂磷壁酸结合的D-丙氨酸量几乎是正常量的两倍。