Time-dependent impact of a high-fat diet on the intestinal barrier of male mice.
Level 5 - mechanism / opinion, no new human data
Animal study (preclinical laboratory experiment)
PubMed 38577199 · doi:10.5662/wjm.v14.i1.89723
What was done
Forty adult male C57BL/6 mice were allocated into four groups to assess the effects of a high-fat diet (50% energy from fat) versus a control diet over 10 or 16 weeks (Control-10wk, HFD-10wk, Control-16wk, and HFD-16wk). Following sacrifice, the authors assessed phylogenetic gut microbiota distribution, circulating lipopolysaccharide (LPS) concentrations, occludin immunostaining, goblet cell density, Mucin2 expression, and intestinal ultrastructure using biochemical, molecular, and stereological methods.
What was found
The abstract reports directional outcomes without exact numerical values, statistical effect sizes, or confidence intervals. High-fat diet groups developed overweight status, gut dysbiosis, elevated LPS levels, and a progressive reduction in occludin immunostaining. By week 16, high-fat feeding caused a reduction in large-intestine goblet cell density and decreased Mucin2 expression, corresponding with ultrastructural disarrangement of the intestinal mucosa.
Why it matters
The study outlines the chronological progression of intestinal barrier breakdown under high-fat feeding, identifying reductions in goblet cell density and mucin production as key structural targets involved in diet-driven endotoxemia.
Limits
The study was conducted exclusively in male mice, precluding direct generalizability to humans or female physiology. The abstract provides no quantitative data, error margins, or p-values to verify effect magnitudes.
Cited by
- supports Consuming isolated saturated fat without a fiber matrix, such as plain butter, increases gut permeability.