Department of Physiology, Immunology Laboratory, University of Calcutta, 92, APC Road, Kolkata, 700009 West Bengal India.
Indian J Microbiol. 2010 Oct;50(4):375-84. doi: 10.1007/s12088-011-0063-z. Epub 2011 Jan 25.
The present study was performed in order to carefully investigate the interaction of Staphylococcus aureus with murine macrophages and the contribution of catalase and superoxide dismutase in intracellular persistence of Staphylococcus aureus within murine macrophages during in vitro infection. We have reported that Staphylococcus aureus internalized by murine macrophages did not appear to be rapidly killed. Data indicating the contribution of a single catalase and superoxide dismutase in intracellular survival of Staphylococcus aureus were provided using established biochemical assays. The results of the present experiment suggest that the survival of Staphylococcus aureus within phagocytic cells is facilitated by its ability to resist oxidative products. Organisms in the log phase of growth clearly demonstrate a resistance to oxidative products.
本研究旨在仔细研究金黄色葡萄球菌与小鼠巨噬细胞的相互作用,以及过氧化氢酶和超氧化物歧化酶在金黄色葡萄球菌在体外感染小鼠巨噬细胞内的细胞内持续存在中的作用。我们已经报道了被小鼠巨噬细胞内化的金黄色葡萄球菌似乎不会被迅速杀死。使用已建立的生化测定法提供了表明单个过氧化氢酶和超氧化物歧化酶在金黄色葡萄球菌细胞内存活中的作用的数据。本实验的结果表明,金黄色葡萄球菌在吞噬细胞内的存活是通过其抵抗氧化产物的能力来促进的。处于对数生长期的生物体显然对氧化产物具有抗性。