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Establishment of a novel obesity mouse model: The induction of intestinal microbiota dysbiosis
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  • Qiuju Li,
  • Xiaolin Gao,
  • Ruizhen Jia,
  • Jianjun Deng,
  • Chaomin Wan
Qiuju Li
West China Clinical Medical College, Sichuan University
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Xiaolin Gao
West China Women's and Children's Hospital

Corresponding Author:[email protected]

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Ruizhen Jia
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Jianjun Deng
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Chaomin Wan
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Abstract

Objective To establish and evaluate an intestinal microbiota dysbiosis-induced obesity mouse model. Methods 50 C57BL/6J male healthy mice were randomly divided into an obesity model group and the control group. The body weight, body length, and Lee’s index of the two groups of mice at week 1 and week 10 were compared. Serum glucose (GLU), total cholesterol (TC) and triglyceride (TG) were measured by enzyme-labeled colorimetric methods. Illumina HiSeq 16S rDNA high-throughput sequencing technology was used to characterize intestinal microbiota in feces. Results The success rate of model establishment in obese mice was 52%. The body weight, body length, Lee’s index, and abdominal fat (wet weight) in the obese model group were all higher than those in the control group, and the differences were statistically significant (P<0.01). Serum GLU and TC levels in the obesity model group were higher than those in the control group (P<0.05) , and there was no difference in TG levels between the two groups(P>0.05). The control group contained more abundant intestinal microbiota phylum and genera than did the obesity model group; the differences between the two groups were significant(FDR≤0.05,P≤0.05). Conclusion Intestinal microbiota dysbiosis can be used to generate an obesity model in mice.