Title |
Cold Exposure Promotes Atherosclerotic Plaque Growth and Instability via UCP1-Dependent Lipolysis
|
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Published in |
Cell Metabolism (Science Direct), July 2013
|
DOI | 10.1016/j.cmet.2013.06.003 |
Pubmed ID | |
Authors |
Mei Dong, Xiaoyan Yang, Sharon Lim, Ziquan Cao, Jennifer Honek, Huixia Lu, Cheng Zhang, Takahiro Seki, Kayoko Hosaka, Eric Wahlberg, Jianmin Yang, Lei Zhang, Toste Länne, Baocun Sun, Xuri Li, Yizhi Liu, Yun Zhang, Yihai Cao |
Abstract |
Molecular mechanisms underlying the cold-associated high cardiovascular risk remain unknown. Here, we show that the cold-triggered food-intake-independent lipolysis significantly increased plasma levels of small low-density lipoprotein (LDL) remnants, leading to accelerated development of atherosclerotic lesions in mice. In two genetic mouse knockout models (apolipoprotein E(-/-) [ApoE(-/-)] and LDL receptor(-/-) [Ldlr(-/-)] mice), persistent cold exposure stimulated atherosclerotic plaque growth by increasing lipid deposition. Furthermore, marked increase of inflammatory cells and plaque-associated microvessels were detected in the cold-acclimated ApoE(-/-) and Ldlr(-/-) mice, leading to plaque instability. Deletion of uncoupling protein 1 (UCP1), a key mitochondrial protein involved in thermogenesis in brown adipose tissue (BAT), in the ApoE(-/-) strain completely protected mice from the cold-induced atherosclerotic lesions. Cold acclimation markedly reduced plasma levels of adiponectin, and systemic delivery of adiponectin protected ApoE(-/-) mice from plaque development. These findings provide mechanistic insights on low-temperature-associated cardiovascular risks. |
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Unknown | 14 | 54% |
Demographic breakdown
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Practitioners (doctors, other healthcare professionals) | 3 | 12% |
Scientists | 3 | 12% |
Science communicators (journalists, bloggers, editors) | 1 | 4% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Netherlands | 2 | 1% |
Sweden | 1 | <1% |
South Africa | 1 | <1% |
Chile | 1 | <1% |
Singapore | 1 | <1% |
United Kingdom | 1 | <1% |
China | 1 | <1% |
Belgium | 1 | <1% |
Other | 0 | 0% |
Unknown | 174 | 93% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 38 | 20% |
Researcher | 36 | 19% |
Student > Master | 19 | 10% |
Student > Bachelor | 17 | 9% |
Student > Doctoral Student | 11 | 6% |
Other | 31 | 17% |
Unknown | 35 | 19% |
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Medicine and Dentistry | 39 | 21% |
Biochemistry, Genetics and Molecular Biology | 32 | 17% |
Immunology and Microbiology | 6 | 3% |
Computer Science | 2 | 1% |
Other | 11 | 6% |
Unknown | 47 | 25% |