We summarized HLA-A and -B data from 1095 black and white adult men and women with or without obesity to determine if specific HLA tissue types are overrepresented in obese individuals compared with nonobese. None of the three HLA types (Aw30, B18, Bw35) previously reported to relate to obesity was overrepresented in obese subjects in our study. However, B14 and B41 haplotypes were overrepresented in obese white men compared with nonobese men, and B7 was overrepresented in obese black men compared with nonobese men. Additional research will be required to confirm the HLA associations we found and to determine if methodologic differences could account for the differences among the previous studies.
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Environ Epigenet
December 2024
Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, Oslo 0317, Norway.
Environmental exposures, including air pollutants and lack of natural spaces, are associated with suboptimal health outcomes in children. We aimed to study the associations between environmental exposures and gene expression in children. Associations of exposure to particulate matter (PM) with diameter <2.
View Article and Find Full Text PDFGut Microbes
December 2025
Institut National de la Santé et de la Recherche Médicale (INSERM), InCOMM Intestine ClinicOralOmics Metabolism & Microbiota UMR1297 Inserm / Université Toulouse III, Toulouse, France.
Recent sets of evidence have described profiles of 16S rDNA sequences in host tissues, notably in fat pads that are significantly overrepresented and can serve as signatures of metabolic disease. However, these recent and original observations need to be further detailed and functionally defined. Here, using state-of-the-art targeted DNA sequencing and discriminant predictive approaches, we describe, from the longitudinal FLORINASH cohort of patients who underwent bariatric surgery, visceral, and subcutaneous fat pad-specific bacterial 16SrRNA signatures.
View Article and Find Full Text PDFObesity (Silver Spring)
January 2025
Epigenetics and Diabetes Unit, Department of Clinical Sciences in Malmö, Lund University Diabetes Centre, Scania University Hospital, Malmö, Sweden.
Objective: We investigated whether prepregnancy BMI (prePregBMI) in women with obesity was associated with differential DNA methylation (DNAm) in cord blood (CB) and whether DNAm may mediate the association of prePregBMI and early childhood BMI z score (BMIz).
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Biochem Biophys Res Commun
December 2024
Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, 48201, USA. Electronic address:
Aging is associated with a decline in physiological functions and an increased risk of metabolic disorders. The liver, a key organ in metabolism, undergoes significant changes during aging that can contribute to systemic metabolic dysfunction. This study investigates the expression of genes involved in the tricarboxylic acid (TCA) cycle, a critical pathway for energy production, in the aging liver.
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