   1.5.1.25 | brain |
levels of thyroid hormone binding capacity for cytosolic NADPH-dependent T3 binding are noticeably lower in the cerebellum than in the cerebrum of adult rat brain at all stages of development. NADPH-dependent T3 binding is only detected in kidney, liver, heart and spleen after birth, increasing over the next 6 weeks. NADPH-dependent T3 binding is detected in cerebrum and cerebellum 5 days before birth, increasing with a sharp transient spike at the time of birth, that is specific for the brain, particularly in cerebrum, and cannot be seen in other tissues. The NADPH-dependent T3 binding in cerebrum decreases after birth, but begins to increase again 2 weeks after birth. The level in cerebellum does not show this increase. The brain may contain at least two distinct P2C reductases/ketimine reductase, one of which is predominant in the fore-brain and another that is prominent in the cerebellum |
741580 |
