Abstract
We studied the expression of type 1 (5alpha-R1) and type 2 (5alpha-R2) 5alpha-reductase isozymes (5alpha-R) and their regulation by dihydrotestosterone (DHT) in the prefrontal cortex of male and female rats during postnatal sexual differentiation of the central nervous system (CNS), using one-step quantitative RT-PCR coupled with laser-induced fluorescence capillary electrophoresis. We found a higher expression of 5alpha-R2, which is considered a masculinizing enzyme, in the female versus male CNS, and observed sexual dimorphism in the regulation of both 5alpha-R isozymes by DHT. These results open up a new research line that could improve understanding of the role of 5alpha-R isozymes in the physiology of the CNS.
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