Loss of function mutation in toll-like receptor-4 does not offer protection against obesity and insulin resistance induced by a diet high in trans fat in mice
2011

TLR4 Mutation and Trans Fat Diet Effects in Mice

Sample size: 24 publication 10 minutes Evidence: moderate

Author Information

Author(s): Vijay-Kumar Matam, Aitken Jesse D, Carvalho Frederic A, Ziegler Thomas R, Gewirtz Andrew T, Ganji Vijay

Primary Institution: Emory University School of Medicine

Hypothesis

Loss of function mutation in TLR4 may protect against high TF diet-induced inflammation and insulin resistance in mice.

Conclusion

Loss of function mutation in TLR4 does not protect mice from trans fat-induced obesity and related metabolic issues, but rather exacerbates them.

Supporting Evidence

  • TLR4 mutant mice were 26.4% heavier than wild type mice on a high trans fat diet.
  • Both genotypes showed higher body weights on a high trans fat diet compared to a low fat diet.
  • TLR4 mutant mice had significantly higher fasting blood glucose and serum insulin levels compared to wild type mice.

Takeaway

Mice without a working TLR4 gene got heavier and had more health problems when they ate a diet high in trans fats, showing that TLR4 is important for fighting these issues.

Methodology

Mice with TLR4 mutations and wild type mice were fed either low fat or high trans fat diets for 12 weeks, and various metabolic parameters were measured.

Limitations

The study was limited to a specific mouse model and diet types, which may not fully represent human conditions.

Participant Demographics

24 male mice, 12 with TLR4 mutation and 12 wild type.

Statistical Information

P-Value

p<0.001

Statistical Significance

p<0.01

Digital Object Identifier (DOI)

10.1186/1476-9255-8-2

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