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. 2004 Jul 28;5:28. doi: 10.1186/1471-2121-5-28

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Copyright © 2004 Talmadge et al; licensee BioMed Central Ltd.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Oxidative and glycolytic enzymatic profiles of individual plantaris fibers of wild-type and MCK-CN* transgenic mice. The * denotes significantly different from wild-type at p ≤ 0.05. A) The specific activity of succinate dehydrogenase (SDH, oxidative marker) was increased in fast (type II) plantaris fibers, but unchanged in slow (type I) fibers. The specific activity of α-glycerophosphate dehydrogenase (GPD, glycolytic marker) was significantly decreased in fast plantaris fibers, but not slow fibers. B) The integrated activity (see methods for explanation of integrated activity) of succinate dehydrogenase (SDH, oxidative marker) was increased in fast (type II) plantaris fibers, but unchanged in slow (type I) fibers. The integrated activity of α-glycerophosphate dehydrogenase (GPD, glycolytic marker) was significantly decreased in fast plantaris fibers, but not slow fibers. C) The GPD/SDH ratio (glycolytic/oxidative ratio) was significantly decreased in fast fibers, but unchanged in slow fibers of the plantaris of MCK-CN* mice relative to wild-type.