环境重金属和黄金菌耐药性:来自尼日利亚城市的见解
Eudora Obioma Nwanaforo1,2, Cecilia N Obasi2, Polycarp Dauda Madaki3
1Department of Environmental Health Science, Federal University of Technology Owerri, Owerri, Nigeria.
概括
环境中的重金属,如和,与甲素耐药黄金葡萄球菌 (MRSA) 的鼻腔殖民增加有关. 这表明金属污染可能会推动尼日利亚社区抗生素耐药细菌的传播.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 公共卫生 公共卫生
背景情况:
- 抗菌素耐药性 (AMR) 是一个日益增长的全球健康威胁.
- 环境污染物,特别是重金属,越来越多地被认为是AMR的潜在驱动因素.
- 重金属可以施加同选择性压力,有利于耐药微生物的生存和繁殖.
研究的目的:
- 调查暴露在重金属 (,,铜) 和黄金葡萄球菌 (Staphylococcus aureus) 的鼻腔殖民之间的关系.
- 为了区分重金属对甲素耐药黄金葡萄球菌 (MRSA) 和对甲素敏感黄金葡萄球菌 (MSSA) 的影响.
- 探索城市尼日利亚社区中的这种关系.
主要方法:
- 来自尼日利亚城市社区的80名参与者提供了血液样本和鼻.
- 用标准微生物技术分离和识别了金黄色葡萄球菌菌株.
- 用原子吸收光谱测量分析了血液样本中的 (Pb), (Cd) 和铜 (Cu) 度.
主要成果:
- 在MRSA殖民和血液 (r=0.72,P<0.01) 和水平 (r=0.68,P<0.01) 之间发现了显著的积极关联.
- MSSA殖民显示出与重金属度的负相关性 (r=-0.54,P<0.05).
- 在阿巴观察到Pb和Cd的度最高,而哈尔科特港的Cu含量最高. 在阿巴的男性显示显著更高的Cu暴露.
结论:
- 重金属污染,特别是和,与MRSA在研究人群中的鼻腔殖民密切相关.
- 金属污染可能会创造一个环境,优先选择和促进抗生素耐药菌株的扩散,如MRSA,而不是敏感菌株.
- 研究结果强调环境因素在抗菌素耐药性流行病学中的关键作用.
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