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- Title
Altered Clock and Lipid Metabolism-Related Genes in Atherosclerotic Mice Kept with Abnormal Lighting Condition.
- Authors
Zhu, Zhu; Hua, Bingxuan; Shang, Zhanxian; Yuan, Gongsheng; Xu, Lirong; Li, Ermin; Li, Xiaobo; Sun, Ning; Yan, Zuoqin; Qian, Ruizhe; Lu, Chao
- Abstract
Background. The risk of atherosclerosis is elevated in abnormal lipid metabolism and circadian rhythm disorder. We investigated whether abnormal lighting condition would have influenced the circadian expression of clock genes and clock-controlled lipid metabolism-related genes in ApoE-KO mice. Methods. A mouse model of atherosclerosis with circadian clock genes expression disorder was established using ApoE-KO mice (ApoE-KO LD/DL mice) by altering exposure to light. C57 BL/6J mice (C57 mice) and ApoE-KO mice (ApoE-KO mice) exposed to normal day and night and normal diet served as control mice. According to zeitgeber time samples were acquired, to test atheromatous plaque formation, serum lipids levels and rhythmicity, clock genes, and lipid metabolism-related genes along with Sirtuin 1 (Sirt1) levels and rhythmicity. Results. Atherosclerosis plaques were formed in the aortic arch of ApoE-KO LD/DL mice. The serum lipids levels and oscillations in ApoE-KO LD/DL mice were altered, along with the levels and diurnal oscillations of circadian genes, lipid metabolism-associated genes, and Sirt1 compared with the control mice. Conclusions. Abnormal exposure to light aggravated plaque formation and exacerbated disorders of serum lipids and clock genes, lipid metabolism genes and Sirt1 levels, and circadian oscillation.
- Subjects
ATHEROSCLEROSIS; ATHEROSCLEROSIS risk factors; LIPID metabolism; RNA analysis; ANIMAL experimentation; BIOLOGICAL models; CIRCADIAN rhythms; CYCLES; DIET; GENE expression; GENES; GENETIC techniques; LIGHTING; LIPIDS; LIVER; RESEARCH methodology; MICE; POLYMERASE chain reaction; PROBABILITY theory; RESEARCH funding; STAINS &; staining (Microscopy); TISSUE culture; TRANSFERASES; PEROXISOME proliferator-activated receptors; DESCRIPTIVE statistics; ONE-way analysis of variance; GENETICS
- Publication
BioMed Research International, 2016, Vol 2016, p1
- ISSN
2314-6133
- Publication type
Article
- DOI
10.1155/2016/5438589