Cited by 321Gastrointestinal motility and disordersBarrier Structure and Function StudiesGenetics, Aging, and Longevity in Model Organisms

Age-Associated Remodeling of the Intestinal Epithelial Barrier

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Tran, L., Greenwood-Van Meerveld, B.·2013·The Journals of Gerontology Series A: Biological Sciences and Medical Sciences

Abstract

Disorders of the gastrointestinal tract are common in the elderly people; however, the precise trait(s) of aging that contribute to the vulnerability of the gastrointestinal tract are poorly understood. Recent evidence suggests that patients with gastrointestinal disorders have increased intestinal permeability. Here, we address the hypothesis that disruption of the intestinal barrier is associated with aging. Our results demonstrated that permeability was significantly higher in colonic biopsies collected from old baboons compared with young baboons. Additionally, colonic tissue from the older animals had decreased zonula occluden-1, occludin, and junctional adhesion molecule-A tight junction protein expression and increased claudin-2 expression. Upregulation of miR-29a and inflammatory cytokines IFN-γ, IL-6, and IL-1β was also found in colonic biopsies from old baboons relative to young baboons. These results show for the first time that a pivotal contributing factor to geriatric vulnerability to gastrointestinal dysfunction may be increased colonic permeability via age-associated remodeling of intestinal epithelial tight junction proteins.

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  1. [11]11. Camilleri M, Spiller R, Madsen K, Greenwood-Van Meerveld B, Verne N. Gut permeability in health and disease: an update. Neurogastroenterol Motil. 2012;24:503–512.10.111/j.1365–2982.01921.x [DOI] [PMC free article] [PubMed] [Google Scholar]
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Authors
Tran, L., & Greenwood-Van Meerveld, B.
Affiliations
University of Oklahoma Health Sciences Center (US)
Venue
The Journals of Gerontology Series A: Biological Sciences and Medical Sciences
Published
2013-07-20
Volume
68
Issue
9
Pages
1045-1056
ISSN
  • 1079-5006 (ISSN-L)
  • 1758-535X
OpenAlex
W2161754779
Cited by
320
References
60
Citations by year
2026: 25 · 2025: 28 · 2024: 25 · 2023: 27 · 2022: 37 · 2021: 31 · 2020: 25 · 2019: 29 · 2018: 22 · 2017: 32 · 2016: 18 · 2015: 9 · 2014: 10 · 2013: 2
FWCI
12.28
Type
journal article
Language
en
Open access
Locations
  • The Journals of Gerontology Series A (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (P40OD010988)
  • National Center for Research Resources (P40RR012317)
Topics
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
Keywords
intestinal permeability, intestinal barrier, aging, colonic epithelium, tight junction proteins, zonula occludens-1, occludin, claudin-2, JAM-A, miR-29a, inflammatory cytokines, interferon-gamma, interleukin-6, IL-1β, baboons
MeSH terms
Aging, Animals, Colon, Gastrointestinal Diseases, Glutamate-Ammonia Ligase, Humans, Intestinal Mucosa, Peroxidase, Permeability, Risk Factors, Cytokines, MicroRNAs, Papio anubis, Tight Junction Proteins

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