Thyrotrophin-releasing hormone--a lactation-promoting agent?

Area of Science:

• Endocrinology
• Reproductive Medicine
• Lactation Physiology

Background:

• Inadequate lactation affects a significant number of postpartum women.
• Hormonal imbalances can contribute to insufficient milk production.
• Thyrotrophin-releasing hormone (TRH) plays a role in the regulation of prolactin secretion.

Purpose of the Study:

• To evaluate the efficacy of nasal thyrotrophin-releasing hormone (TRH) in enhancing lactational and hormonal responses.
• To investigate the impact of TRH on milk yield and prolactin levels in puerperal women with insufficient lactation.

Main Methods:

• A prospective, randomized, double-blind, placebo-controlled study was conducted.
• 19 puerperal women with inadequate lactation received either 1 mg of nasal TRH or placebo sprays four times daily for 10 days.
• Daily milk yield and serum prolactin and thyroid hormone levels were monitored.

Main Results:

• Nasal TRH administration significantly increased daily milk yield from 142.0 to 253.0 g/day (P = 0.014).
• Basal prolactin levels increased significantly in the TRH group (from 117.4 to 173.3 µg/l; P < 0.001), while decreasing in the placebo group.
• No significant changes in thyroid hormone levels or signs of hyperthyroidism were observed.

Conclusions:

• Repeated nasal administration of TRH between suckling episodes can effectively improve inadequate lactation.
• This method shows promise as a therapeutic intervention for enhancing milk production in breastfeeding mothers.
• Nasal TRH treatment appears to be safe and well-tolerated, without adverse effects on thyroid function.