PMID- 36407026 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221122 IS - 1726-9148 (Electronic) IS - 1726-913X (Print) IS - 1726-913X (Linking) VI - 20 IP - 3 DP - 2022 Jul TI - The G-Protein-Coupled Estrogen Receptor Agonist Prevents Cardiac Lipid Accumulation by Stimulating Cardiac Peroxisome Proliferator-Activated Receptor alpha: A Preclinical Study in Ovariectomized-Diabetic Rat Model. PG - e123560 LID - 10.5812/ijem-123560 [doi] LID - e123560 AB - BACKGROUND: Type 2 diabetes mellitus (T2DM) is associated with cardiometabolic changes, and menopause exacerbates these conditions, leading to a greater risk of cardiovascular diseases (CVDs). The G protein-coupled estrogen receptor (GPER), which mediates the rapid effects of estrogen, has beneficial cardiac effects in both T2DM and menopause, but its mechanism of action is not well understood. OBJECTIVES: This study aimed to determine whether G1 as a selective GPER-agonist has beneficial effects on cardiac lipid metabolism in ovariectomized rats with T2DM. METHODS: Female Wistar rats were divided into 5 groups (n = 7 in each group): Sham-control (Sh-Ctl), T2DM, ovariectomized-T2DM (OVX-T2DM), OVX-T2DM-G1 (GPER-agonist), and OVX-T2DM-vehicle (OVX-T2DM-Veh). After stabilization of T2DM, G1 (200 mug/Kg) was administrated for 6 weeks. Then, the levels of free fatty acids (FFAs), CD36, peroxisome proliferator-activated receptor alpha (PPARalpha), and lipid accumulation in the cardiac tissue were determined. RESULTS: Compared with the Sh-Ctl group, cardiac FFAs (P < 0.001), CD36 (P < 0.05), and lipid accumulation (P < 0.001) increased, and cardiac PPARalpha (P < 0.01) decreased in T2DM animals; ovariectomy intensified these changes. Also, cardiac FFAs, PPARalpha, and lipid accumulation (P < 0.05) significantly decreased in the OVX-T2DM-G1 group compared to the OVX-T2DM-Veh group. However, cardiac CD36 levels did not change. CONCLUSIONS: G1 as a selective GPER-agonist affects lipid metabolism in T2DM animals. It also plays a vital role in improving cardiac metabolism during postmenopausal diabetic conditions. CI - Copyright (c) 2022, International Journal of Endocrinology and Metabolism. FAU - Jafarynezhad, Faezeh AU - Jafarynezhad F AD - Department of Physiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. FAU - Shahbazian, Mohammad AU - Shahbazian M AD - Department of Physiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. FAU - Farhadi, Zeinab AU - Farhadi Z AUID- ORCID: 0000-0001-9718-8406 AD - Department of Physiology, Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran. FAU - Yadeghari, Maryam AU - Yadeghari M AD - Department of Anatomy and Cell Biology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. FAU - Rezvani, Mohammad Ebrahim AU - Rezvani ME AUID- ORCID: 0000-0001-6146-806X AD - Department of Physiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. FAU - Safari, Fatemeh AU - Safari F AUID- ORCID: 0000-0003-3943-8803 AD - Department of Physiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. FAU - Azizian, Hossein AU - Azizian H AUID- ORCID: 0000-0002-0921-094X AD - Department of Physiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. LA - eng PT - Journal Article DEP - 20220712 PL - Netherlands TA - Int J Endocrinol Metab JT - International journal of endocrinology and metabolism JID - 101235597 PMC - PMC9661540 OTO - NOTNLM OT - Cardiac OT - Diabetic Rats OT - GPER OT - Lipid OT - PPARalpha COIS- Conflict of Interests: The authors declare no conflicts of interest. EDAT- 2022/11/22 06:00 MHDA- 2022/11/22 06:01 PMCR- 2022/07/01 CRDT- 2022/11/21 04:27 PHST- 2022/02/26 00:00 [received] PHST- 2022/06/11 00:00 [revised] PHST- 2022/06/11 00:00 [accepted] PHST- 2022/11/21 04:27 [entrez] PHST- 2022/11/22 06:00 [pubmed] PHST- 2022/11/22 06:01 [medline] PHST- 2022/07/01 00:00 [pmc-release] AID - 10.5812/ijem-123560 [doi] PST - epublish SO - Int J Endocrinol Metab. 2022 Jul 12;20(3):e123560. doi: 10.5812/ijem-123560. eCollection 2022 Jul.