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Article

Effects of Dietary Fatty Acid Composition on Lipid Metabolism and Body Fat Accumulation in Ovariectomized Rats

by 1,†, 2,3,4,†, 5 and 1,4,6,7,*
1
School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan
2
Graduate Institute of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
3
Cell Physiology and Molecular Image Research Center, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan
4
Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan
5
Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO 63112, USA
6
Nutrition Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan
7
Research Center of Geriatric Nutrition, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Victor Gerdes
Nutrients 2021, 13(6), 2022; https://doi.org/10.3390/nu13062022
Received: 18 May 2021 / Revised: 5 June 2021 / Accepted: 10 June 2021 / Published: 11 June 2021
(This article belongs to the Section Lipids)
Background: Obesity is a state of excess energy storage resulting in body fat accumulation, and postmenopausal obesity is a rising issue. In this study using ovariectomized (OVX) rats, we mimicked low estrogen levels in a postmenopausal state in order to investigate the effects of different amounts and types of dietary fatty acids on body fat accumulation and body lipid metabolism. Methods: At 9 weeks of age, rats (n = 40) were given an ovariectomy, eight of which were sham-operated to serve as a control group (S). We then divided OVX rats into four different intervention groups: diet with 5% soybean oil (C), and diet with 5% (L), 15% (M), and 20% (H) (w/w) experimental oil, containing 60% monounsaturated fatty acids (MUFAs) and with a polyunsaturated/saturated fatty acid (P/S) ratio of 5. Results: After OVX, compared to the S group, the C group showed significantly higher body weight, and insulin and leptin levels. Compared to the C group, the H group had lower hepatic triglyceride level and FAS enzyme activity, and higher hepatic ACO and CPT-1 gene expressions and enzyme activities. Conclusions: An OVX leads to severe weight gain and lipid metabolism abnormalities, while according to previous studies, high fat diet may worsen the situation. However, during our experiment, we discovered that the experimental oil mixture with 60% MUFAs and P/S = 5 may ameliorate these imbalances. View Full-Text
Keywords: ovariectomy; monounsaturated fatty acids; body fat accumulation; lipid metabolism ovariectomy; monounsaturated fatty acids; body fat accumulation; lipid metabolism
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MDPI and ACS Style

Yeh, J.-H.; Tung, Y.-T.; Yeh, Y.-S.; Chien, Y.-W. Effects of Dietary Fatty Acid Composition on Lipid Metabolism and Body Fat Accumulation in Ovariectomized Rats. Nutrients 2021, 13, 2022. https://doi.org/10.3390/nu13062022

AMA Style

Yeh J-H, Tung Y-T, Yeh Y-S, Chien Y-W. Effects of Dietary Fatty Acid Composition on Lipid Metabolism and Body Fat Accumulation in Ovariectomized Rats. Nutrients. 2021; 13(6):2022. https://doi.org/10.3390/nu13062022

Chicago/Turabian Style

Yeh, Jhih-Han, Yu-Tang Tung, Yu-Sheng Yeh, and Yi-Wen Chien. 2021. "Effects of Dietary Fatty Acid Composition on Lipid Metabolism and Body Fat Accumulation in Ovariectomized Rats" Nutrients 13, no. 6: 2022. https://doi.org/10.3390/nu13062022

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