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Effects of High-Fat Diets on Body Composition, Hypothalamus NPY, and Plasma Leptin and Corticosterone Levels in Rats
Abstract
We investigated the adipogenic effects of high-fat diets with different fat sources, as well as their influence on hypothalamus NPY content (NPY) and plasma corticosterone (Cs) and leptin (Lep) concentrations. In a 6-wk experiment performed in 28 male Wistar rats, high-fat diets (approx 60% of energy as fat) containing sunflower oil (S), rapeseed oil (R), palm oil (P), or lard (L) as the fat source were applied. Carcass composition was analyzed by standard methods; NPY, Cs, and Lep were determined by RIA method. Gas chromatography was applied to measure fatty acid composition of dietary fats. S group had the highest body fat content and Lep and the lowest Cs and NPY, while L rats had high Lep and the highest Cs and NPY. We conclude that the fatty acid composition of dietary fat is of high importance where effects of high fat diets on adiposity, as well as on plasma levels of both hormones and hypothalamus NPY content are concerned.
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“In contrast, other studies reported greater body weight and fat gain in rodents fed diets high in n-6 PUFAs (SBO, sunflower oil) as opposed to high-SFA diets (palm oil or lard) (18, 19).”
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“On the contrary, evidence from nutrition intervention studies in animal models has been inconsistent.”
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References 35 · Cited by 15
Metadata
- Authors
- Stachon, M., Fürstenberg, E., & Gromadzka-Ostrowska, J.
- Affiliations
- Warsaw University of Life Sciences (PL)
- Corresponding author
- Fürstenberg, Ewa
- Venue
- Endocrine
- Published
- 2006
- Volume
- 30
- Issue
- 1
- Pages
- 69-74
- ISSN
- 0969-711X (ISSN-L)
- OpenAlex
- W2076921383
- Semantic Scholar
- 82ce5c70168df8dfdbec7c456375ad5c9c13a5ad
- Cited by
- 15
- References
- 35
- Citations by year
- 2025: 1 · 2021: 2 · 2020: 1 · 2019: 1 · 2016: 1 · 2013: 3
- FWCI
- 0.14
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Endocrine (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adipokines, Inflammation, and Metabolic Diseases
- Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diet, Metabolism, and Disease
- Keywords
- high-fat diet, body composition, adiposity, neuropeptide Y, hypothalamus, leptin, corticosterone, dietary fat source, sunflower oil, rapeseed oil, palm oil, lard, fatty acid composition, rats
- MeSH terms
- Adipose Tissue, Animals, Body Composition, Body Weight, Energy Intake, Corticosterone, Dietary Fats, Eating, Hypothalamus, Male, Neuropeptide Y, Plant Oils, Leptin, Rats
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- The paper
- Stachon, M., Fürstenberg, E., & Gromadzka-Ostrowska, J. (2006). Effects of High-Fat Diets on Body Composition, Hypothalamus NPY, and Plasma Leptin and Corticosterone Levels in Rats. Endocrine. https://doi.org/10.1385/endo%3A30%3A1%3A69
