Kessler R E, van de Rijn I
Antimicrob Agents Chemother. 1981 Jan;19(1):39-43. doi: 10.1128/AAC.19.1.39.
The rate of killing of a group A streptococcal species by penicillin was compared with the release of lipoteichoic acid (LTA) and its deacylated derivative, dLTA. Although there was no stimulation of release from stationary-phase cells in the presence of penicillin, there was dramatic release of LTA and dLTA from exponential-phase cells after the addition of penicillin. Although decreases in viability were observed within 15 min after addition of penicillin, culture mass and LTA content did not appear to be affected until after 30 min. Stimulation of release of LTA and dLTA appeared to take place after 15 but before 30 min after addition of penicillin. These observations are interpreted to indicate that the stimulation of release of LTA and dLTA in response to penicillin is secondary to the killing event.
将青霉素对A组链球菌的杀菌速率与脂磷壁酸(LTA)及其脱酰基衍生物dLTA的释放情况进行了比较。尽管在青霉素存在的情况下,稳定期细胞的释放未受到刺激,但加入青霉素后,对数期细胞会大量释放LTA和dLTA。虽然在加入青霉素后15分钟内观察到存活率下降,但直到30分钟后培养物质量和LTA含量才似乎受到影响。LTA和dLTA的释放刺激似乎在加入青霉素后15分钟但在30分钟之前发生。这些观察结果被解释为表明青霉素诱导的LTA和dLTA释放刺激是杀菌事件的继发结果。