Cited by 604Gut microbiota and healthAdipokines, Inflammation, and Metabolic DiseasesGastrointestinal motility and disorders

Increased Gut Permeability and Microbiota Change Associate with Mesenteric Fat Inflammation and Metabolic Dysfunction in Diet-Induced Obese Mice

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Lam, Yan Y., Ha, Connie W. Y., Campbell, Craig R., Mitchell, Andrew J., Dinudom, Anuwat, Oscarsson, Jan, Cook, David I., Hunt, Nicholas H. +3 more·2012·PLoS ONE

Abstract

We investigated the relationship between gut health, visceral fat dysfunction and metabolic disorders in diet-induced obesity. C57BL/6J mice were fed control or high saturated fat diet (HFD). Circulating glucose, insulin and inflammatory markers were measured. Proximal colon barrier function was assessed by measuring transepithelial resistance and mRNA expression of tight-junction proteins. Gut microbiota profile was determined by 16S rDNA pyrosequencing. Tumor necrosis factor (TNF)-α and interleukin (IL)-6 mRNA levels were measured in proximal colon, adipose tissue and liver using RT-qPCR. Adipose macrophage infiltration (F4/80⁺) was assessed using immunohistochemical staining. HFD mice had a higher insulin/glucose ratio (P = 0.020) and serum levels of serum amyloid A3 (131%; P = 0.008) but reduced circulating adiponectin (64%; P = 0.011). In proximal colon of HFD mice compared to mice fed the control diet, transepithelial resistance and mRNA expression of zona occludens 1 were reduced by 38% (P<0.001) and 40% (P = 0.025) respectively and TNF-α mRNA level was 6.6-fold higher (P = 0.037). HFD reduced Lactobacillus (75%; P<0.001) but increased Oscillibacter (279%; P = 0.004) in fecal microbiota. Correlations were found between abundances of Lactobacillus (r = 0.52; P = 0.013) and Oscillibacter (r = -0.55; P = 0.007) with transepithelial resistance of the proximal colon. HFD increased macrophage infiltration (58%; P = 0.020), TNF-α (2.5-fold, P<0.001) and IL-6 mRNA levels (2.5-fold; P = 0.008) in mesenteric fat. Increased macrophage infiltration in epididymal fat was also observed with HFD feeding (71%; P = 0.006) but neither TNF-α nor IL-6 was altered. Perirenal and subcutaneous adipose tissue showed no signs of inflammation in HFD mice. The current results implicate gut dysfunction, and attendant inflammation of contiguous adipose, as salient features of the metabolic dysregulation of diet-induced obesity.

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  1. [42]Al-Sadi R Ye D Said HM Ma TY 2010 IL-1[beta]-Induced Increase in Intestinal Epithelial Tight Junction Permeability Is Mediated by MEKK-1 Activation of Canonical NF-[kappa]B Pathway. The American Journal of Pathology 177 2310 2322 21048223 PMC2966790
  2. [55]Salazar N Gueimonde M Hernandez-Barranco AM Ruas-Madiedo P de los Reyes-Gavilan CG 2008 Exopolysaccharides produced by intestinal Bifidobacterium strains act as fermentable substrates for human intestinal bacteria. Appl Environ Microbiol 74 4737 4745 18539803 PMC2519331

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Authors
Lam, Y. Y., Ha, C. W. Y., Campbell, C. R., Mitchell, A. J., Dinudom, A., Oscarsson, J., Cook, D. I., Hunt, N. H., Caterson, I. D., Holmes, A. J., & Storlien, L. H.
Affiliations
The University of Sydney (AU)
Corresponding author
Lam, Yan Y.
Venue
PLoS ONE
Published
2012-03-23
Volume
7
Issue
3
Pages
e34233
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2000450805
Cited by
604
References
72
Citations by year
2026: 24 · 2025: 33 · 2024: 39 · 2023: 58 · 2022: 62 · 2021: 59 · 2020: 58 · 2019: 53 · 2018: 44 · 2017: 41 · 2016: 41 · 2015: 34 · 2014: 29 · 2013: 21 · 2012: 8
FWCI
11.84
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by)
Funders
  • Medical Research Council
  • National Health and Medical Research Council (633240)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
diet-induced obesity, high saturated fat diet, intestinal permeability, gut microbiota, mesenteric fat inflammation, visceral adipose tissue, metabolic dysfunction, tight junctions, ZO-1, TNF-α, interleukin-6, adipose tissue macrophages, Lactobacillus, Oscillibacter, adiponectin, serum amyloid A
MeSH terms
Animals, Diet, Female, Inflammation, Intestinal Mucosa, Intestines, Mesentery, Mice, Inbred C57BL, Permeability, Mice

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