Gonadal function in patients with beta thalassaemia major

Area of Science:

• Endocrinology
• Reproductive Medicine
• Hematology

Background:

• Beta thalassaemia major is a genetic blood disorder.
• Delayed puberty and amenorrhoea are common in affected females.
• Endocrine dysfunction, particularly of the hypothalamic-pituitary-gonadal axis, is a known complication.

Purpose of the Study:

• To investigate hypothalamic-pituitary-gonadal function in female patients with beta thalassaemia major.
• To compare gonadotrophin reserves and ovarian response to stimulation in thalassaemic patients versus healthy controls.
• To identify patients requiring hormone replacement therapy.

Main Methods:

• Endocrine assessment in 23 female patients (13-29 years) with beta thalassaemia major and 12 healthy controls.
• Administration of gonadotrophin-releasing hormone (GnRH) intravenously.
• Subsequent administration of human menopausal gonadotrophin (hMG) to assess ovarian response.

Main Results:

• Patients exhibited significantly decreased gonadotrophin reserves compared to controls.
• Only one of 23 patients showed an intact luteinising hormone (LH) and follicle-stimulating hormone (FSH) response.
• While most with delayed puberty had normal gonadotrophin-releasing hormone (GnRH) and human menopausal gonadotrophin (hMG) response, three showed very low responses; gonadal failure was more severe in those with primary amenorrhoea.

Conclusions:

• Female patients with beta thalassaemia major frequently have impaired hypothalamic-pituitary-gonadal function.
• Routine assessment of this axis is vital for early diagnosis and management.
• Timely initiation of hormone replacement therapy can address glandular dysfunction and improve outcomes.