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Androgens
1.
2. Androgen actually means male sex hormones.
Testosterone is the main androgen in men. It is
mainly synthesized from Leydig cells or
interstitial cells of the testes under the
influence of ICSH (Interstitial Cell Stimulating
Hormone) of anterior pituitary.
3. • Large Amount:
Leydig cells (Testes)
• Small Amount:
Thecal cells (Ovaries)
Adrenal glands
4. Androgens bind to specific nuclear receptor in a target cell.
Androgen Cytoplasmic androgen receptor (AR)
Testosterone receptor complex + DNA
Androgen response element of target gene
DNA transcription
Protein synthesis
5. • Development of male secondary sexual characteristics
• Maturation of reproductive organs
• Promotes protein synthesis
• Increase muscle mass