Air Pollution Affects Fat Tissue and Metabolism in Mice
Author Information
Author(s): Xu Zhaobin, Xu Xiaohua, Zhong Mianhua, Hotchkiss Ian P, Lewandowski Ryan P, Wagner James G, Bramble Lori A, Yang Yifeng, Wang Aixia, Harkema Jack R, Lippmann Morton, Rajagopalan Sanjay, Chen Lung-Chi, Sun Qinghua
Primary Institution: The Ohio State University
Hypothesis
PM2.5 exposure may have differential effects on brown and white adipose tissues.
Conclusion
Exposure to PM2.5 triggers oxidative stress in brown adipose tissue and alters mitochondrial gene expression.
Supporting Evidence
- PM2.5 exposure increased reactive oxygen species production in brown adipose tissue.
- Mitochondrial number was significantly reduced in both white and brown adipose tissues.
- UCP1 expression was significantly decreased in brown adipose tissue after PM2.5 exposure.
- Gene expression of brown adipocyte-specific genes was down-regulated in response to PM2.5.
Takeaway
Breathing in polluted air can hurt the fat in our bodies, making it less healthy and affecting how we use energy.
Methodology
Male ApoE knockout mice inhaled PM2.5 or filtered air for 6 hours a day, 5 days a week, for 2 months, and various analyses were performed on adipose tissues.
Limitations
The study was limited by sample size and tissue availability.
Participant Demographics
Male ApoE knockout mice, 4 weeks old.
Statistical Information
P-Value
<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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