ArticleJournal of diabetes and metabolic disorders2025
Amino acid profiles, aging, and sex hormone interactions in the elderly Iranian population: a metabolomics study.
Article in Journal of diabetes and metabolic disorders, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Aging and sex hormones significantly influences on metabolic profiles, particularly in individuals aged 50 year and older. This study aimed to investigate the associations between serum metabolites, aging, and sex hormone levels among elderly individuals in Bushehr, Iran - a coastal region characterized by a unique lifestyle, dietary patterns, and environmental conditions, such as high seafood consumption and exposure to marine climate, which may collectively influence metabolic profiles and hormone levels in the aging population. Methods: This cross-sectional study analyzed data from the Bushehr Elderly Health Program, which included 2001 participants (1143 women and 858 men) aged over 50 years old from Bushehr, Iran. Serum levels of 20 amino acids were measured using liquid chromatography-tandem mass spectrometry (LC-MS/MS) and the results were analyzed based on gender, age, menopause status, menopause age, and serum levels of sex hormones such as follicle-stimulating hormone (FSH), luteinizing hormone (LH), testosterone, and estradiol (E2). Statistical analyses were performed using SPSS version 25.0 and R version 4.0.3, with a focus on gender differences and the correlation between aging, sex hormones, and metabolite profiles. Results: Among the 2001 participants, mean ages were 61.57 ± 7.6 years for women and 62.92 ± 8.4 years for men. Men had higher serum levels of glutamic acid, leucine, methionine, phenylalanine, tyrosine, valine, citrulline, ornithine, proline, threonine, histidine, lysine, tryptophan, asparagine, and glutamine, while women had higher levels of glycine and serine. Aging was associated with notable changes in amino acid levels, such as increased citrulline and decreased threonine in women, and similar trends in men with a pronounced decrease in alanine. In men, low testosterone levels were linked to reduced concentration of alanine, methionine, phenylalanine, tyrosine, citrulline, glycine ornithine, serine, lysine, asparagine, and glutamine. Postmenopausal women showed a significant decrease in threonine levels. Discussion: The findings highlight the complex interplay between aging, sex hormones, and metabolic changes. Gender-specific differences in amino acid profiles suggest that sex hormones play a pivotal role in modulating metabolism, which may influence susceptibility to metabolic disorders. These insights could inform the development of targeted interventions tailored to the specific needs of aging populations. Future research should investigate the underlying mechanisms linking sex hormones to metabolic pathways and assess their potential for improving health outcomes in older adults.
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