PMID- 28888986 OWN - NLM STAT- MEDLINE DCOM- 20171023 LR - 20220331 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 493 IP - 1 DP - 2017 Nov 4 TI - PDE 5 inhibitor improves insulin sensitivity by enhancing mitochondrial function in adipocytes. PG - 631-636 LID - S0006-291X(17)31663-7 [pii] LID - 10.1016/j.bbrc.2017.08.140 [doi] AB - Adipocytes are involved in many metabolic disorders. It was recently reported that phosphodiesterase type 5 (PDE5) is expressed in human adipose tissue. In addition, PDE5 inhibitors have been shown to improve insulin sensitivity in humans. However, the mechanism underlying the role of PDE5 inhibitors as an insulin sensitizer remains largely unknown. The present study was undertaken to investigate the role of the PDE5 inhibitor udenafil in insulin signaling in adipocytes and whether this is mediated through the regulation of mitochondrial function. To study the mechanism underlying the insulin sensitizing action of PDE5 inhibitors, we evaluated quantitative changes in protein or mRNA levels of mitochondrial oxidative phosphorylation (OxPhos) complex, oxygen consumption rate (OCR), and fatty acid oxidation with varying udenafil concentrations in 3T3-L1 cells. Our cell study suggested that udenafil enhanced the insulin signaling pathway in 3T3-L1 cells. Following udenafil treatment, basal mitochondrial OCR, maximal OxPhos capacity, and OxPhos gene expression significantly increased. Finally, we examined whether udenafil can affect the fatty acid oxidation process. Treatment of 3T3-L1 cells with udenafil (10 and 20 muM) significantly increased fatty acid oxidation rate in a dose-dependent manner. In addition, the expression of peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1alpha) significantly increased. We demonstrated that the PDE5 inhibitor udenafil enhances insulin sensitivity by improving mitochondrial function in 3T3-L1 cells. This might be the mechanism underlying the PDE5 inhibitor-enhanced insulin signaling in adipocytes. This also suggests that udenafil may provide benefit in the treatment of type 2 diabetes and other related cardiovascular diseases. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Yu, Hea Min AU - Yu HM AD - Division of Endocrinology and Metabolism, Department of Internal Medicine, Daejeon Eulji Medical Center, Eulji University, 95, Dunsanseo-ro, Seo-gu, 35233 Daejeon, Republic of Korea. Electronic address: hmin00@naver.com. FAU - Chung, Hyo Kyun AU - Chung HK AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, 99, Daehak-ro, Yuseong-gu, 34134, Daejeon, Republic of Korea. Electronic address: hkchung74@cnu.ac.kr. FAU - Kim, Koon Soon AU - Kim KS AD - Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, 99, Daehak-ro, Yuseong-gu, 34134, Daejeon, Republic of Korea. Electronic address: kunsunkim@cnu.ac.kr. FAU - Lee, Jae Min AU - Lee JM AD - Division of Endocrinology and Metabolism, Department of Internal Medicine, Daejeon Eulji Medical Center, Eulji University, 95, Dunsanseo-ro, Seo-gu, 35233 Daejeon, Republic of Korea. Electronic address: leejam25@eulji.ac.kr. FAU - Hong, Jun Hwa AU - Hong JH AD - Division of Endocrinology and Metabolism, Department of Internal Medicine, Daejeon Eulji Medical Center, Eulji University, 95, Dunsanseo-ro, Seo-gu, 35233 Daejeon, Republic of Korea. Electronic address: lammoth@eulji.ac.kr. FAU - Park, Kang Seo AU - Park KS AD - Division of Endocrinology and Metabolism, Department of Internal Medicine, Daejeon Eulji Medical Center, Eulji University, 95, Dunsanseo-ro, Seo-gu, 35233 Daejeon, Republic of Korea. Electronic address: pkkss@eulji.ac.kr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20170906 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Fatty Acids) RN - 0 (Insulin) RN - 0 (Phosphodiesterase 5 Inhibitors) RN - 0 (Pyrimidines) RN - 0 (Sulfonamides) RN - L5IB4XLY36 (udenafil) SB - IM MH - 3T3-L1 Cells MH - Adipocytes/drug effects/*physiology MH - Animals MH - Dose-Response Relationship, Drug MH - Fatty Acids/metabolism MH - Insulin/*administration & dosage MH - Insulin Resistance/*physiology MH - Mice MH - Mitochondria/drug effects/*physiology MH - Oxygen Consumption/drug effects/*physiology MH - Phosphodiesterase 5 Inhibitors/administration & dosage MH - Pyrimidines/*administration & dosage MH - Sulfonamides/*administration & dosage OTO - NOTNLM OT - Adipocyte OT - Insulin sensitivity OT - Mitochondrial function OT - PDE5 inhibitor EDAT- 2017/09/11 06:00 MHDA- 2017/10/24 06:00 CRDT- 2017/09/11 06:00 PHST- 2017/08/19 00:00 [received] PHST- 2017/08/24 00:00 [accepted] PHST- 2017/09/11 06:00 [pubmed] PHST- 2017/10/24 06:00 [medline] PHST- 2017/09/11 06:00 [entrez] AID - S0006-291X(17)31663-7 [pii] AID - 10.1016/j.bbrc.2017.08.140 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2017 Nov 4;493(1):631-636. doi: 10.1016/j.bbrc.2017.08.140. Epub 2017 Sep 6.