FIG. 4.
Enzymatic activities of mitochondrial respiratory chain and citrate synthase activity are decreased in isolated mitochondria from lumbar DRG of STZ-diabetic rats. Enzymatic activity of complex I was assessed as rotenone-sensitive portion of NADH-cytochrome c reductase (NCCR) (n = 5) (A), cytochrome c oxidase (n = 6–7) (B), and citrate synthase (n = 5) (C) and was measured as described in research design and methods. Values are means ± SD, n = as indicated. *P < 0.05 vs. control (Ctrl) (unpaired Student's t test). Db, diabetic.