摘要
背景: 耐甲氧西林金黄色葡萄球菌(MRSA)等多重耐药细菌在医疗保健机构的患者中迅速传播,是成为社区相关感染和相关死亡的一个日益重要的原因。开发针对耐药细菌的有效治疗方案是一项公共卫生优先事项。植物多酚是一种结构多样的化合物,数百年来被用于治疗感染,不仅具有抗菌活性,而且还具有抗氧化、抗炎和抗癌活性。基于对多酚的抗菌能力的现有证据,多酚可作为感染性疾病的替代或补充疗法。 目的: 综述植物多酚对革兰氏阳性菌特别是金黄色葡萄球菌及其耐药菌株的抑菌作用。确定多酚的主要细菌分子靶点及其潜在作用机制。 方法: 本文对植物多酚类化合物的抗菌活性及其推测的分子靶点进行了研究。我们还对参与肽聚糖生物合成的蛋白质进行了数千种不同多酚的虚拟筛选,以发现潜在的有价值的生物活性化合物。本文所使用的文献信息来自PubMed的MEDLINE。 结果: 几种多酚:酚酸、黄酮类化合物(特别是黄酮醇)、单宁、木脂素、芪以及这些植物混合物的组合,在低浓度值范围的最小抑菌浓度下,对耐药和不耐革兰氏阳性菌显示出显著的抗菌活性。它们的作用机制多种多样,主要针对细胞壁、脂膜、膜受体和离子通道、细菌代谢产物和生物膜的形成。多酚类药物与抗生素的联合使用也有协同效应。 结论: 为发展新的抗生素疗法.,植物多酚是一种有前途的抗菌剂来源,无论是单体或结合抗生素。
关键词: 抗菌,细菌细胞壁,细菌耐药性,革兰氏阳性,植物多酚,金黄色葡萄球菌,协同作用。
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