Selenium depletion and its correction in a child with homocystinuria

Area of Science:

• Biochemistry
• Pediatric Nutrition
• Metabolic Disorders

Background:

• Homocystinuria is a metabolic disorder.
• Selenium deficiency can impact health.
• Erythrocyte function can be compromised in certain conditions.

Purpose of the Study:

• To report the serial monitoring of selenium replacement therapy in an infant with homocystinuria.
• To assess the efficacy of selenium supplementation in correcting selenium depletion and related abnormalities.

Main Methods:

• A 10-month-old child with diagnosed homocystinuria was treated with selenium.
• Selenium status was monitored serially during replacement therapy.
• In vitro hydrogen peroxide challenge to erythrocytes was performed before and after therapy.

Main Results:

• The child required 50 mug of selenium (enriched yeast preparation) on alternate days for maintenance.
• Indices of selenium status returned to normal over time.
• Abnormal erythrocyte response to hydrogen peroxide challenge normalized with selenium therapy alone, despite normal vitamin E levels.

Conclusions:

• Selenium replacement therapy is effective in correcting selenium depletion in infants with homocystinuria.
• Selenium supplementation can restore normal erythrocyte function in this context.
• This case highlights the importance of monitoring and managing selenium status in children with metabolic disorders.