GSH Induced Controlled Release of Levofloxacin from a Purpose-Built Prodrug: Luminescence Response for Probing the Drug Release in <i>Escherichia coli</i> and <i>Staphylococcus aureus</i>
作者:Suman Pal、Vadde Ramu、Nandaraj Taye、Devraj G. Mogare、Amar M. Yeware、Dhiman Sarkar、D. Srinivasa Reddy、Samit Chattopadhyay、Amitava Das
DOI:10.1021/acs.bioconjchem.6b00324
日期:2016.9.21
these purpose-built prodrugs. Further, appropriate design helped us to demonstrate that it is possible also to control the kinetics of the drug release from respective prodrugs. Associated luminescence enhancement helps in probing the release of the drug from the prodrug in bacteria and helps in elucidating the mechanistic pathway of the transformation. Such an example is scarce in the contemporary literature
氟喹诺酮类药物是第三代广谱杀菌抗生素,可对抗革兰氏阳性和革兰氏阴性细菌。左氧氟沙星(L)是一种氟喹诺酮,广泛用于抗感染化学疗法以及尿路感染和肺炎的治疗。尿路感染的主要病原体是大肠杆菌,而肺炎链球菌是引起肺炎的主要原因,主要是下呼吸道感染。L的渗透性差导致使用这种药物的剂量更高,而在细胞外液中过量的药物导致中枢神经系统(CNS)异常。解决此问题的一种方法是提高药物分子的亲脂性,因此,我们合成了两种新的左氧氟沙星衍生物,它们通过谷胱甘肽(GSH)诱导的二硫键裂解参与了时空释放。最近对链球菌突变体的研究表明,它位于正常下呼吸道的上皮内膜液(ELF)中,有效[GSH]在ELF中约为430μM。大肠杆菌通常会引起尿路感染,据报告,健康人的猪膀胱上皮中GSH的浓度为0.6 mM。因此,在本研究中,我们选择了两种重要细菌(Gram + ve和Gram-ve),它们在具有高细胞外GSH浓度的区域中起作用。