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Increased atherosclerosis in mice deficient in perilipin1
Dominique Langlois1, Fabien Forcheron, Jacques-Yuan Li
1ERI22-EA4173, Faculté Rockefeller, University C Bernard Lyon1, 8 av Rockefeller, Lyon, 69008, France.
Lipids in Health and Disease
|September 28, 2011
Summary
Perilipin1 deficiency in mice worsened atherosclerosis despite normal blood pressure and lipids. This suggests perilipin1 plays a protective role in preventing the development of atherosclerosis.
Area of Science:
- Biochemistry
- Cardiovascular Biology
- Metabolic Research
Background:
- Perilipin1 is a key regulator of lipid metabolism in adipocytes.
- Perilipin1 is present in atherosclerotic foam cells, suggesting a role in atherosclerosis.
- The specific role of perilipin1 in atherogenesis requires further investigation.
Purpose of the Study:
- To investigate the role of perilipin1 in the development of atherosclerosis.
- To determine if perilipin1 deficiency influences lipid accumulation in the arterial wall.
Main Methods:
- Perilipin1-deficient (Plin1-/-) mice were crossed with LDL receptor-deficient (Ldlr-/-) mice.
- Mice were fed an atherogenic diet for 10 or 20 weeks.
- Atherosclerotic lesion size, plasma lipids, and blood pressure were analyzed.
Main Results:
- Perilipin1 deficiency did not alter blood pressure or plasma lipid levels.
- Mice lacking perilipin1 exhibited reduced body weight and adiposity.
- Atherosclerotic lesion area was significantly increased in Plin1-/- Ldlr-/- mice after 20 weeks.
Conclusions:
- Perilipin1 deficiency exacerbates atherosclerosis independently of traditional risk factors.
- These findings indicate an atheroprotective role for perilipin1.
- Targeting perilipin1 may offer a novel therapeutic strategy for atherosclerosis.
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