ArticleExperimental gerontology2022
Advanced age exacerbates intestinal epithelial permeability after burn injury in mice.
Article in Experimental gerontology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 14 citations in OpenAlex.
- Ethanol exacerbates post-burn neuroinflammation and gut-brain barrier dysfunction which are associated with microbiome changes.Alcohol (Fayetteville, N.Y.) · 2026Review
- Intestinal REG3G Protects Against Gastrointestinal Dysfunction in a Murine Model of Ethanol Intoxication and Burn Injury.Shock (Augusta, Ga.) · 2026Article
- Impaired intestinal cell proliferation parallels increased senescence after burn injury in aged mice.American journal of physiology. Gastrointestinal and liver physiology · 2026Article
- Evidence for microvesicle particles and platelet-activating factor as effectors for systemic effects of thermal burn injury.Frontiers in immunology · 2026Review
- Post-burn Lung Inflammation Is Associated With Induction of Pulmonary Cathelicidin-related Antimicrobial Peptide and S100a8 in Mice.Journal of burn care & research : official publication of the American Burn Association · 2025Article
- Advanced Age Worsens Respiratory Function and Pulmonary Inflammation After Burn Injury and This Correlates With Changes in the Fecal Microbiome in Mice.Journal of burn care & research : official publication of the American Burn Association · 2025Article
- Reducing the excessive inflammation after burn injury in aged mice by maintaining a healthier intestinal microbiome.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2024Article
- Intestinal barrier damage contributes to a higher prevalence of frailty in aging people living with HIV: a retrospective case control study in a Chinese cohort.Frontiers in immunology · 2024Article
- Evaluation ofMicroorganisms · 2023Article
- Cutaneous burn injury induces neuroinflammation and reactive astrocyte activation in the hippocampus of aged mice.Experimental gerontology · 2022Article
- Aging, Cutaneous Burn Injury and Multi-Organ Complications: The Role of the Gut.Advances in geriatric medicine and research · 2022Article
- Age-Related Intestinal Dysbiosis and Enrichment of Gut-specific Bacteria in the Lung Are Associated With Increased Susceptibility toFrontiers in aging · 2022Article
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
Abstract
backgroundAdvanced age is an independent risk factor for morbidity and mortality after burn injury. Following burn, the intestines can become permeable leading to the leakage of bacteria and their products from the lumen of the ileum to the portal and systemic circulation. Here, we sought to determine the effects of advanced age on intestinal permeability post burn injury and assess intestinal inflammatory biomarkers.
methodsYoung (4-5 months) and aged (18-22 months) female BALB/cBy mice were subjected to a 12-15% total body surface area (TBSA) sham or burn injury. 24 h after injury, mice were euthanized, and organs collected. Colony-forming units (CFU) were counted from plated mesenteric lymph nodes (MLN). Gene expression of ileal tight junctional proteins, occludin and zonula occludens 1 (ZO-1), in addition to ileal damage associated molecular pattern (DAMP) proteins, S100A8 and S100A9, as well as ileal inflammatory markers IL-6 and TNF-α were measured by qPCR. Intestinal cell death was measured by ELISA. Intestinal permeability was determined by FITC fluorescence in serum; 4kD FITC-dextran was given by oral gavage 3 h before euthanasia.
resultsAged mice subjected to burn injury had increased intestinal permeability as evidenced by a 5.8-fold higher level of FITC-dextran in their serum when compared to all other groups (p < 0.05). In addition, aged burn-injured mice exhibited heightened bacterial accumulation in the MLN with a 15.5-fold increase over all other groups (p < 0.05). Histology of ileum failed to show differences in villus length among all groups. Analysis of ileal tight junctional proteins and inflammatory marker gene expression revealed no difference in Ocln, Tjp1, Il6, or Tnf expression among all groups, but 2.3 and 2.9-fold upregulation of S100a8 and S100a9, respectively, in aged burn-injured mice relative to both young groups and aged sham-injured mice (p < 0.05). Lastly, cell death in the ileum was elevated more than two-fold in aged burn-injured mice relative to young animals regardless of injury (p < 0.05).
conclusionsThese data demonstrate that advanced age exacerbates intestinal epithelial permeability after burn injury. Heightened apoptosis may be responsible for the elevated intestinal leakiness and accumulation of bacteria in mesenteric lymph nodes. In addition, S100a8/9 may serve as a biomarker of elevated inflammation within the intestine.
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