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[Prolactin in male reproduction]
Summary
Prolactin (PRL) is a pituitary hormone with significant effects on various organs. Its release is tightly regulated, and altered levels can indicate health issues, particularly in males.
Area of Science:
- Endocrinology
- Hormone Research
Context:
- Prolactin (PRL) is a peptide hormone secreted by the pituitary gland.
- Its release is regulated by unidentified prolactin-releasing and inhibiting factors, with the latter being dominant.
- Pharmacological agents can significantly alter PRL secretion.
Purpose:
- To discuss the significance of prolactin (PRL) in human physiology and clinical diagnostics.
- To outline the normal serum levels and physiological effects of PRL.
- To describe diagnostic tests involving PRL level alterations.
Summary:
- Normal male serum prolactin levels range from 6-13 ng/ml.
- PRL influences multiple organs including kidneys, gonads, liver, and skin.
- Clinical assessments involve observing PRL level changes after TSH, chlorpromazine, or 2-brom-alpha-ergocryptine administration.
- Elevated PRL levels are associated with prolactin-producing tumors, leading to sexual dysfunction in males.
Impact:
- Understanding prolactin's role is crucial for diagnosing pituitary disorders and related conditions.
- Further research is needed to clarify the relationship between prolactin and male infertility or gynecomastia.