Table 2.
Effects of the A. blazei extract treatment on several enzymatic activities of brain mitochondrial from old rats. All enzymes were evaluated spectrophotometrically as described in Materials and Methods. The values represent the mean ± standard errors of the mean.
| Enzymes | Experimental groups | ||
|---|---|---|---|
| (1) Young rats | (2) Old rats | (3) A. blazei-treated old rats | |
| nmol min−1 mg protein−1 | |||
| NADH dehydrogenase | 698.90 ± 29.99 (n = 3) | 588.17 ± 16.51* (n = 5) | 752.12 ± 36.35 (n = 6) |
| Succinate dehydrogenase | 14.22 ± 1.84 (n = 6) | 7.83 ± 0.94* (n = 5) | 14.57 ± 0.95 (n = 6) |
| α-Ketoglutarate dehydrogenase | 17.24 ± 1.48 (n = 6) | 10.98 ± 0.54* (n = 5) | 16.13 ± 0.98 (n = 6) |
| Pyruvate dehydrogenase | 23.75 ± 2.37 (n = 4) | 17.26 ± 0.27# (n = 5) | 21.03 ± 1.22 (n = 6) |
| Cytochrome c oxidase | 287.20 ± 31.30 (n = 5) | 264.53 ± 16.23 (n = 5) | 501.32 ± 25.09** (n = 4) |
| Malate dehydrogenase | 7540 ± 560 (n = 6) | 6780 ± 770 (n = 5) | 6980 ± 270 (n = 6) |
| Isocitrate dehydrogenase | 26.68 ± 1.79 (n = 6) | 25.80 ± 2.89 (n = 5) | 27.57 ± 1.31 (n = 6) |
| Glutamate dehydrogenase | 183.6 ± 11.9 (n = 6) | 179.5 ± 19.9 (n = 5) | 179.9 ± 8.4 (n = 6) |
*P < 0.05 for (2) versus (1) and for (2) versus (3) (ANOVA and Student-Newman-Keuls post hoc testing).
# P < 0.05 for (2) versus (1) (ANOVA and Student-Newman-Keuls post hoc testing).
**P < 0.05 for (3) versus (2) and (3) versus (1) (ANOVA and Student-Newman-Keuls post hoc testing).