Urinary excretion of retinol in children with acute diarrhea

• Published in: The American journal of clinical nutrition Vol. 61; no. 6; pp. 1273 - 1276
• Main Authors: Alvarez, JO, Salazar-Lindo, E, Kohatsu, J, Miranda, P, Stephensen, CB
• Format: Journal Article
• Language: English
• Published: Bethesda, MD Elsevier Inc 01.06.1995; American Society for Clinical Nutrition; American Society for Clinical Nutrition, Inc
• Subjects: Acute Disease; Biological and medical sciences; Child, Preschool; Children & youth; Diarrhea; Diarrhea - complications; Diarrhea - urine; Gastroenterology. Liver. Pancreas. Abdomen; Humans; Infant; Medical research; Medical sciences; Other diseases. Semiology; Stomach. Duodenum. Small intestine. Colon. Rectum. Anus; Tropical medicine; Vitamin A; Vitamin A - blood; Vitamin A - urine; Vitamin A Deficiency - etiology; South America; Peru; America; Human; Urine; Excretion; Pathophysiology; Acute; Nutrition disorder; Vitamin; Diarrhea; Conjunctiva disease; Xerophthalmia; Retinol; Infection; Eye disease; Digestive diseases; Intestinal disease; Complication; Child
• ISSN: 0002-9165; 1938-3207
• DOI: 10.1093/ajcn/61.6.1273

Acute infections of childhood are associated with an increased of xerophthalmia, apparently due to depletion of vitamin A stores. The mechanism responsible for this is not known. Recently, it has been reported that severe infections in adult patients (ie, sepsis and pneumonia) result in excretion of large quantities of retinol in the urine. In 44 children hospitalized for treatment of acute diarrhea we found mean urinary excretions of 1.44 mumol retinol/24 h on day 1 of hospitalization, 0.62 mumol retinol/24 h on day 2, and 0.23 mumol/24 h on day 3. Healthy control subjects matched for age did not excrete measurable amounts of retinol in the urine. Retinol excretion was associated strongly with rotavirus diarrhea and presence of fever. Furthermore, serum retinol concentration was negatively associated with duration of diarrhea before hospitalization, suggesting that urinary excretion of retinol may be an important contributor to vitamin A depletion.