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[Free amino acids in human Eocrine sweat (author's transl)]
Summary
This study quantifies free amino acids in eccrine sweat, revealing consistent patterns but significant individual variations in excretion. Women generally excrete more amino acids than men, with notable differences across body sites.
Area of Science:
- Biochemistry
- Human Physiology
Context:
- Eccrine sweat composition analysis.
- Quantification of free amino acids using ion exchange column chromatography.
Purpose:
- To quantitatively determine free amino acids in human eccrine sweat.
- To investigate variations in amino acid profiles based on sex, body site, and individual differences.
Summary:
- A consistent qualitative and relative quantitative pattern of free amino acids was observed in eccrine sweat.
- Significant individual variations in amino acid concentrations were found, with alanine, glycine, citrulline, histidine, ornithine, threonine, and serine showing particularly high excretion rates.
- Women exhibited higher excretion of most amino acids compared to men, and significant differences were noted in amino acid excretion across various body parts of the same individual.
Impact:
- Provides baseline data on human sweat amino acid composition.
- Highlights the influence of sex and body location on sweat's biochemical profile.
- Establishes the relative constancy of sweat amino acid profiles within an individual over time, contrasting with inter-individual variability.