Protein O-GlcNAc Modification Increases in White Blood Cells After a Single Bout of Physical Exercise

Frontiers in Immunology
Tamás NagyAttila Miseta

Abstract

Protein O-linked N-acetylglucosamine (O-GlcNAc) is a dynamic posttranslational modification influencing the function of many intracellular proteins. Recently it was revealed that O-GlcNAc regulation is modified under various stress states, including ischemia and oxidative stress. Aside from a few contradictory studies based on animal models, the effect of exercise on O-GlcNAc is unexplored. To evaluate O-GlcNAc levels in white blood cells (WBC) of human volunteers following physical exercise. Young (age 30 ± 5.2), healthy male volunteers (n = 6) were enlisted for the study. Blood parameters including metabolites, ions, "necro"-enzymes, and cell counts were measured before and after a single bout of exercise (2-mile run). From WBC samples, we performed western blots to detect O-GlcNAc modified proteins. The distribution of O-GlcNAc in WBC subpopulations was assessed by flow cytometry. Elevation of serum lactic acid (increased from 1.3 ± 0.4 to 6.9 ± 1.7 mM), creatinine (from 77.5 ± 6.3 U/L to 102.2 ± 7.0 μM), and lactate dehydrogenase (from 318.5 ± 26.2 to 380.5 ± 33.2 U/L) confirmed the effect of exercise. WBC count also significantly increased (from 6.6 ± 1.0 to 8.4 ± 1.4 G/L). The level of O-GlcNAc modified proteins in WBCs s...Continue Reading

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Citations

Jun 22, 2021·Cancer Biomarkers : Section a of Disease Markers·Viktória TemesfőiZsuzsanna Faust

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Methods Mentioned

BETA
Assay
flow cytometry
blood collections

Software Mentioned

FlowJo
ImageJ

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