Gonadal function in patients with Down syndrome.

Area of Science:

• Endocrinology
• Genetics
• Reproductive Health

Background:

• Down syndrome (DS) is a genetic disorder associated with various health complications.
• Gonadal function in individuals with DS requires further investigation, particularly regarding progressive changes throughout development.

Purpose of the Study:

• To evaluate gonadal function in a cohort of individuals with Down syndrome.
• To determine the prevalence and progression of gonadal dysfunction in DS from infancy to adulthood.

Main Methods:

• Assessed gonadal function in 100 individuals with DS (53 males, 47 females).
• Excluded subjects with abnormal thyroid function from endocrine analysis.
• Measured hormone levels including follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone (T).
• Compared physical measurements such as penile length and testicular volume to normative data.

Main Results:

• Adult men with DS exhibited significantly reduced mean stretched penile length and testicular volume compared to controls.
• Elevated serum FSH and LH levels with normal testosterone levels in adult men with DS suggest partial gonadal deficiency.
• Primary gonadal dysfunction was observed in 6 out of 14 women.
• Abnormal FSH and LH levels were noted in prepubertal children and infants with DS, indicating early onset of dysfunction.

Conclusions:

• Primary gonadal deficiency is common and progressive in individuals with Down syndrome.
• The deficiency manifests from birth, worsens through adolescence, and is clearly evident in adult patients.
• These findings highlight the need for monitoring and potential interventions for gonadal health in DS.