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Chromium vI induced cytoskeletal damage and cell death in isolated hepatocytes

Gunaratnam, M. and Grant, M.H. (2002) Chromium vI induced cytoskeletal damage and cell death in isolated hepatocytes. In: Biochemical Society Transactions. Biochemical Society, pp. 748-750.

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Cr(VI) is a known human carcinogen. Although it has been investigated widely, the mechanism(s) of its action is/are not fully understood. The aim of this study was to evaluate Cr(VI)-induced damage to the cell cytoskeleton and the mode of cell death in primary cultures of hepatocytes. Exposure of the cultured cells (10(5)/cm(2)) to 1 and 5 microM Cr(VI) for 24 h resulted in loss of the cell cytoskeleton, and this was accompanied by membrane blebbing and shrinking of the cell. Staining of the cells with annexin V and propidium iodide showed that Cr(VI) induces apoptosis at low concentrations (5 microM), whereas at higher concentrations (25 microM) it induces necrosis. This study shows that Cr(VI) causes damage to the cell cytoskeleton, and induces apoptosis at low concentrations. However, the importance of necrosis and apoptosis in vivo, and the effects of longer exposure times, which simulate environmental and occupational exposure to Cr(VI), remain to be investigated.

Item type: Book Section
ID code: 8431
Keywords: chromium vI, cytoskeletal, cells, hepatocytes, bioengineering, biochemistry, Bioengineering
Subjects: Technology > Engineering (General). Civil engineering (General) > Bioengineering
Department: Faculty of Engineering > Bioengineering
Depositing user: Strathprints Administrator
Date Deposited: 11 Aug 2009 08:44
Last modified: 24 Jul 2015 09:31
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