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[Dynamics of hormonal modifications induced by bromocryptin during hyperprolactinemia]
La Nouvelle Presse Medicale
|January 22, 1977
Summary
Bromocriptine effectively lowers high prolactin (PRL) levels in patients with hypogonadism within one day. However, sex hormone recovery and resumption of gonadal activity varied, with some patients showing persistent hypogonadism possibly due to prior pituitary damage.
Area of Science:
- Endocrinology
- Reproductive Medicine
Background:
- Hyperprolactinemia is associated with hypogonadism, affecting reproductive health.
- Understanding the impact of prolactin suppression on gonadal function is crucial.
Purpose of the Study:
- To evaluate the efficacy of bromocriptine in suppressing prolactin levels.
- To assess the subsequent effects on sex hormones and gonadal activity in patients with hypogonadism and hyperprolactinemia.
Main Methods:
- A longitudinal study involving 18 patients (16 females, 2 males) with hypogonadism and hyperprolactinemia.
- Administration of bromocriptine at a dosage of 5 mg/day.
- Monitoring of prolactin levels, sex hormones, and resumption of gonadal activity over 3 weeks.
Main Results:
- Bromocriptine rapidly suppressed high prolactin levels within 24 hours.
- Initial sex hormone levels did not change; secondary increases were observed only in patients resuming gonadal activity.
- Menstruation resumed in 11 patients; persistent hypogonadism was noted in others, potentially linked to incomplete prolactin reduction or prior hypothalamo-pituitary damage.
Conclusions:
- Bromocriptine is effective in rapidly reducing prolactin levels in hyperprolactinemic hypogonadism.
- Resumption of gonadal function is variable and may be influenced by factors beyond prolactin levels, including pre-existing hypothalamo-pituitary dysfunction.
- Further investigation into the long-term effects and underlying causes of persistent hypogonadism is warranted.