Lookup NU author(s): Dr Chris Redfern,
Professor Kim Bartlett,
Professor Robert Wilkinson,
Professor Tim Goodship
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Background: In chronic renal failure, metabolic acidosis is associated with increased whole body protein degradation. In rats this effect of acidosis occurs in skeletal muscle and is associated with increased ubiquitin mRNA expression. This has not been demonstrated in humans. Materials and methods: Six patients with chronic renal failure and acidosis underwent muscle biopsy before and after 1 month's treatment with sodium bicarbonate. RNA was extracted from the biopsy, and the expression of the genes for ubiquitin and the proteasome component, C2, were measured by Northern blotting. Results and conclusions: There was no significant difference in the expression of ubiquitin or C2 after bicarbonate treatment. This is contrast with results from animal models of acidosis and some other catabolic conditions in humans. This may reflect the complexity of the ubiquitin-dependent pathway, and it may be that changes in ubiquitin expression are only seen with more severe and/or acute changes in pH.
Author(s): Roberts, R.G., Redfern, C.P.F., Graham, K.A., Bartlett, K., Wilkinson, R., Goodship, T.H.J.
Publication type: Article
Publication status: Published
Journal: European Journal of Clinical Investigation
Print publication date: 01/01/2002
ISSN (print): 0014-2972
ISSN (electronic): 1365-2362
PubMed id: 12153548
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