Journal article
Increased proinflammatory and oxidant gene expression in circulating mononuclear cells in older adults: amelioration by habitual exercise
Physiological genomics, Vol.43(14), pp.895-902
07/01/2011
DOI: 10.1152/physiolgenomics.00204.2010
PMCID: PMC3138336
PMID: 21610086
Abstract
Gano LB, Donato AJ, Pierce GL, Pasha HM, Magerko KA, Roeca C, Seals DR. Increased proinflammatory and oxidant gene expression in circulating mononuclear cells in older adults: amelioration by habitual exercise. Physiol Genomics 43: 895-902, 2011. First published May 24, 2011; doi:10.1152/physiolgenomics.00204.2010.-We tested the hypothesis that peripheral blood mononuclear cells (PBMC) of older adults demonstrate a proinflammatory/-oxidative gene expression profile that can be improved by regular aerobic exercise. PBMC were isolated from young (n = 25, 18-33 yr) and middle-aged/older (n = 40, 50-76 yr) healthy adults. The older adults had greater mRNA expression (real-time RT-PCR) of the proinflammatory/-oxidant transcription factor nuclear factor-kappa B (1.58-fold, P < 0.05) and receptor for advanced glycation end products (1.12-fold, P < 0.05), the proinflammatory cytokines tumor necrosis factor-alpha (1.90-fold, P < 0.05) and monocyte chemoattractant protein-1 (1.47-fold, P < 0.05), and the oxidant-producing enzymes nicotinamide adenine dinucleotide phosphate-oxidase (0.91-fold, P < 0.05) and inducible nitric oxide synthase (2.60-fold, P < 0.05). In 11 subjects (58-70 yr), maximal oxygen consumption (+11%) and exercise time (+19%) were increased (both P < 0.001), and expression of the above proinflammatory/-oxidative genes was or tended to be decreased in PBMC after vs. before 2 mo of aerobic exercise (brisk walking similar to 6 days/wk, 50 min/day, 70% of maximal heart rate). Expression of interleukin-6 was not different with age or exercise intervention. Age group-and exercise intervention-related differences in gene expression were independent of other factors. PBMC of healthy older adults demonstrate increased expression of several genes associated with inflammation and oxidative stress, which is largely ameliorated by habitual aerobic exercise. This proinflammatory/-oxidative gene signature may represent a therapeutic target for lifestyle and pharmacological prevention and treatment strategies.
Details
- Title: Subtitle
- Increased proinflammatory and oxidant gene expression in circulating mononuclear cells in older adults: amelioration by habitual exercise
- Creators
- Lindsey B. Gano - University of Colorado BoulderAnthony J. Donato - University of Colorado BoulderGary L. Pierce - University of Colorado BoulderHamza M. Pasha - University of Colorado BoulderKatherine A. Magerko - University of Colorado BoulderCassandra Roeca - University of Colorado BoulderDouglas R. Seals - University of Colorado Boulder
- Resource Type
- Journal article
- Publication Details
- Physiological genomics, Vol.43(14), pp.895-902
- DOI
- 10.1152/physiolgenomics.00204.2010
- PMID
- 21610086
- PMCID
- PMC3138336
- NLM abbreviation
- Physiol Genomics
- ISSN
- 1094-8341
- eISSN
- 1531-2267
- Publisher
- Amer Physiological Soc
- Number of pages
- 8
- Grant note
- AG-015897; AG-06537; AG-013038; AG-029337; T32 AG-000279; RR-00051 / National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA K01AG029337 / NATIONAL INSTITUTE ON AGING; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Aging (NIA)
- Language
- English
- Date published
- 07/01/2011
- Academic Unit
- Health, Sport, and Human Physiology ; Internal Medicine
- Record Identifier
- 9984267254702771
Metrics
7 Record Views