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Selenium Significantly Inhibits Adipocyte Hypertrophy and Abdominal Fat Accumulation in OLETF Rats via Induction of Fatty Acid β-Oxidation

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Abstract

A combination of selenium (Se) with other trace element is associated with partially modulate fatty acid distribution as well as reduction of the body weight and feed efficiency. To investigate whether or not Se treatment has an impact on lipid metabolism, we examined the levels of lipid metabolism-related factors, including abdominal fat, adiponectin, cholesterol, very long chain dehydrogenase (VLCAD), and medium chain acyl-CoA dehydrogenase (MCAD) in 20-week-old Otsuka Long-Evans Tokushima Fatty (OLETF) rats following sodium selenite treatment for 2 weeks. Herein, we observed that (a) Se treatment induced insulin-like effects by lowering the serum glucose level in rats; (b) Se-treated rats showed significance values decreases in abdominal fat mass, adipocyte size, and adiponectin, which are associated with lipid metabolism; (c) Se treatment led to reduced levels of cholesterol, triglycerides, low-density lipoprotein (LDL), and high-density lipoprotein (HDL) cholesterol; (d) fat tissue in Se-treated rats displayed significantly lower expression of adipocyte marker genes along with increased expression of VLCAD and MCAD; and (e) fatty liver formation and β-oxidation gene expression were both significantly reduced in liver tissue of Se-treated rats. Therefore, our results suggest that Se may induce inhibition of adipocyte hypertrophy and abdominal fat accumulation along with suppression of fatty liver formation by the differential regulation of the gene expression for fatty acid β-oxidation in the OLETF model.

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Acknowledgment

We would like to thank Jin Hyang Hwang, the animal technicians, for directing the Animal Facility and Care at the Laboratory Animal Resources Center. This research was supported by a grant from Regional Innovation System (RIS) of the Ministry of Knowledge Economy in Korea.

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Authors and Affiliations

  1. College of Natural Resources & Life Science, Pusan National University, Miryang, 627-706, Republic of Korea

    Ji Eun Kim, Sun Il Choi, Hye Ryun Lee, In Sik Hwang, Young Ju Lee, Beum Soo An, Sang Hak Lee & Dae Youn Hwang

  2. Pusan National University-Wellbeing Products Center, Miryang, 627-706, Republic of Korea

    Sang Hak Lee & Dae Youn Hwang

  3. Department of Biosystems & Biomaterials Science and Engineering, College of Agriculture and Life Sciences Seoul National University, Seoul, 151-921, Republic of Korea

    Hak Jin Kim

  4. Department of Experimental Animal Research, Biomedical Research Institute, Seoul National University Hospital, Seoul, 110-744, Republic of Korea

    Byeong Cheol Kang

  5. Department of Biomaterials Science, College of Natural Resources & Life Science, Pusan National University, 50 Cheonghak-ri, Samnangjin-eup, Miryang-si, Gyeongsangnam-do, 627-706, Republic of Korea

    Dae Youn Hwang

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  1. Ji Eun Kim
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Kim, J.E., Choi, S.I., Lee, H.R. et al. Selenium Significantly Inhibits Adipocyte Hypertrophy and Abdominal Fat Accumulation in OLETF Rats via Induction of Fatty Acid β-Oxidation. Biol Trace Elem Res 150, 360–370 (2012). https://doi.org/10.1007/s12011-012-9519-1

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