Seasonal Variation in Human Amino Acid Excretion,
Abstract
Amino acid excretion was studied in young, healthy men during summer, fall, and winter months in a location in southwestern United States. Both random and timed urine samples were employed. The amino acids determined were alanine, arginine, cysteine, glutaminetaminetaminetamic acid, glu glycine, histidine, lysine, methyl histidine, serine, threonine, and valine. Supplemental determinations included urine volume, creatinine, uric acid, urea, sodium, and potassium. Using random samples, and expressing values as ratios with creatinine, significant seasonal variation was found for alanine, arginine, cysteine, glutamic acid, glycine, lycine, serine, urea, and uric acid. Although there was no significant variation in urine volume, both creatinine excretion and the urinary Na/K ratio varied significantly with season. These effects are interpreted as the result of changes in glomerular filtration and tubular reabsorption rates.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1959
- Accession Number
- ADA036300
Entities
People
- Donald D. Van Fossan.
- Henry B. Hale
- James P. Ellis Jr.