Correlation between changes in prolactin and melatonin serum levels after radical mastectomy

Area of Science:

• Endocrinology
• Oncology
• Reproductive Biology

Background:

• Prolactin (PRL) and melatonin (MLT) are implicated in breast cancer growth.
• Understanding their interplay in breast cancer is crucial for treatment strategies.

Purpose of the Study:

• To investigate the relationship between PRL and MLT secretions in human breast cancer patients.
• To evaluate the impact of radical mastectomy on PRL and MLT levels.

Main Methods:

• Serum PRL and MLT levels were measured using RIA in 24 breast cancer patients and 14 controls.
• Measurements were taken before and 15 days after radical mastectomy.

Main Results:

• Mean MLT levels were significantly higher in breast cancer patients than controls.
• Surgery significantly increased PRL levels in 13/24 patients, particularly those without lymph node involvement.
• Mastectomy affected MLT levels variably (enhancement or decrease) in some patients.
• No significant correlation was found between PRL and MLT changes post-surgery.

Conclusions:

• Radical mastectomy influences both PRL and MLT secretions in breast cancer patients.
• The clinical significance of these hormonal changes following surgery needs further investigation.