Table 2.
Alcohol dehydrogenase activities in liver and brain
ADH Activities (U/mg protein) at Postnatal Age |
||
---|---|---|
Organ, Isozyme |
P25 LE |
P90 LE |
Liver ADH-3 | 0.036 ± 0.001* | 0.025 ± 0.002 |
Liver ADH-2 | 0.015 ± 0.001* | 0.011 ± 0.001 |
Brain ADH-2 | 0.0026 ± 0.0002 | 0.0025 ± 0.0001 |
Liver and brain alcohol dehydrogenase (ADH) were determined using different substrates to distinguish ADH isozymes, ADH-2 and ADH-3. Tissues were all from ethanol-naive Long-Evans rats at two postnatal ages, P25 (juvenile) and P90 (adult). Activity is expressed in Units (μmoles NADH produced/min) and values presented are mean±SD (N=6).
Liver ADH-2 and ADH-3 were significantly greater (p<0.001) in liver preparations from P25 compared to P90 rats. There was no significant difference in Brain ADH-2 levels.