PMID- 27698957 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1976-1457 (Print) IS - 2005-6168 (Electronic) IS - 1976-1457 (Linking) VI - 10 IP - 5 DP - 2016 Oct TI - Corn silk extract improves cholesterol metabolism in C57BL/6J mouse fed high-fat diets. PG - 501-506 AB - BACKGROUND/OBJECTIVES: Corn silk (CS) extract contains large amounts of maysin, which is a major flavonoid in CS. However, studies regarding the effect of CS extract on cholesterol metabolism is limited. Therefore, the purpose of this study was to determine the effect of CS extract on cholesterol metabolism in C57BL/6J mouse fed high-fat diets. MATERIALS/METHODS: Normal-fat group fed 7% fat diet, high-fat (HF) group fed 25% fat diet, and high-fat with corn silk (HFCS) group were orally administered CS extract (100 mg/kg body weight) daily. Serum and hepatic levels of total lipids, triglycerides, and total cholesterol as well as serum free fatty acid, glucose, and insulin levels were determined. The mRNA expression levels of acyl-CoA: cholesterol acyltransferase (ACAT), cholesterol 7-alpha hydroxylase (CYP7A1), farnesoid X receptor (FXR), lecithin cholesterol acyltransferase (LCAT), low-density lipoprotein receptor, 3-hyroxy-3-methylglutaryl-coenzyme A reductase (HMG-CoA reductase), adiponectin, leptin, and tumor necrosis factor alpha were determined. RESULTS: Oral administration of CS extract with HF improved serum glucose and insulin levels as well as attenuated HF-induced fatty liver. CS extracts significantly elevated mRNA expression levels of adipocytokines and reduced mRNA expression levels of HMG-CoA reductase, ACAT, and FXR. The mRNA expression levels of CYP7A1 and LCAT between the HF group and HFCS group were not statistically different. CONCLUSIONS: CS extract supplementation with a high-fat diet improves levels of adipocytokine secretion and glucose homeostasis. CS extract is also effective in decreasing the regulatory pool of hepatic cholesterol, in line with decreased blood and hepatic levels of cholesterol though modulation of mRNA expression levels of HMG-CoA reductase, ACAT, and FXR. FAU - Cha, Jae Hoon AU - Cha JH AD - Department of Food Science and Nutrition, Dankook University, 152, Juljeon-ro, Suji-gu, Yonin-si, Gyeonggi 16890, Korea. FAU - Kim, Sun Rim AU - Kim SR AD - Agriculture Science Technology, 300 Nongsaengmyeong-ro, Wansan-gu, Jeonju-si, Jeonbuk 54875, Korea. FAU - Kang, Hyun Joong AU - Kang HJ AD - Agriculture Science Technology, 300 Nongsaengmyeong-ro, Wansan-gu, Jeonju-si, Jeonbuk 54875, Korea. FAU - Kim, Myung Hwan AU - Kim MH AD - Department of Food Engineering, Dankook University, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam 31116, Korea. FAU - Ha, Ae Wha AU - Ha AW AD - Department of Food Science and Nutrition, Dankook University, 152, Juljeon-ro, Suji-gu, Yonin-si, Gyeonggi 16890, Korea. FAU - Kim, Woo Kyoung AU - Kim WK AD - Department of Food Science and Nutrition, Dankook University, 152, Juljeon-ro, Suji-gu, Yonin-si, Gyeonggi 16890, Korea. LA - eng PT - Journal Article DEP - 20160704 PL - Korea (South) TA - Nutr Res Pract JT - Nutrition research and practice JID - 101311052 PMC - PMC5037067 OTO - NOTNLM OT - Corn silk OT - adiponectin OT - cholesterol OT - high-fat OT - maysin COIS- The authors declare no potential conflicts of interests. EDAT- 2016/10/05 06:00 MHDA- 2016/10/05 06:01 PMCR- 2016/10/01 CRDT- 2016/10/05 06:00 PHST- 2016/04/11 00:00 [received] PHST- 2016/05/19 00:00 [revised] PHST- 2016/06/14 00:00 [accepted] PHST- 2016/10/05 06:00 [entrez] PHST- 2016/10/05 06:00 [pubmed] PHST- 2016/10/05 06:01 [medline] PHST- 2016/10/01 00:00 [pmc-release] AID - 10.4162/nrp.2016.10.5.501 [doi] PST - ppublish SO - Nutr Res Pract. 2016 Oct;10(5):501-506. doi: 10.4162/nrp.2016.10.5.501. Epub 2016 Jul 4.