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Beneficial Effects of Alternate Dietary Regimen on Liver Inflammation, Atherosclerosis and Renal Activation
Authors
Peter Heeringa
Robert Kleemann
+3 more
Teake Kooistra
Peter Y. Wielinga
Gopala K. Yakala
Publication date
1 January 2011
Publisher
Public Library of Science
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PubMed
Abstract
Background: Alternate day calorie restriction (CR) has been shown to be almost as beneficial as daily CR. The question arises whether this concept is also applicable to alternating dietary composition. Objective: To seek evidence that alternating high cholesterol (HC) - cholesterol-free (CON) Western diet can effectively diminish hepatic and renal inflammation and cardiovascular risk factors as compared with daily HC-supplemented Western diet. Design: Four groups of ApoE*3Leiden mice, a humanized model for atherosclerosis, were subjected to different feeding treatments for 16 weeks. Mice were fed CON diet; CON diet with 1% w/w cholesterol (HC); alternate (ALT) diet regimen of CON (4 days) and HC (3 days); or CON diet supplemented with 0.43% (w/w) cholesterol (MC), with overall dietary cholesterol intake equal to ALT. Plasma was analyzed for cardiovascular risk factors, aorta for atherosclerotic lesion formation, and liver and kidney for inflammation. Results: ALT diet but not MC was almost as effective as daily CON feeding in preventing disease development. Compared to HC, the ALT group showed 62% lower hepatic nuclear factor kappa B (NF-?B) activity (P<0.001), a reduction of the circulating inflammatory markers E-selectin (-20%; P<0.05), vascular cell adhesion molecule 1 (VCAM-1; -15%; P<0.05) and Serum Amyloid A (SAA; -31%; P<0.05), smaller atherosclerotic lesion sizes (-51%; 46497±10791 µm2 vs. 94664±16470 µm2; P<0.05) and diminished renal expression of specific inflammation and activation markers (VCAM-1, -27%; P<0.05; monocyte chemotactic protein-1 (MCP-1); -37%; P<0.01). Conclusion: Alternate HC-CON feeding reproduced most of the beneficial effects of daily cholesterol-free diet, including strongly diminished hepatic, vascular and renal activation and inflammation; also atherosclerosis was reduced by half as compared to HC, albeit still higher compared to the CON group. © 2011 Wielinga et al
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