PMID- 36672747 OWN - NLM STAT- MEDLINE DCOM- 20230124 LR - 20230201 IS - 2073-4425 (Electronic) IS - 2073-4425 (Linking) VI - 14 IP - 1 DP - 2022 Dec 20 TI - The Role of Pancreatic Fatty Acid Synthesis in Islet Morphology and Function after Caloric Restriction or Roux-En-Y Gastric Bypass Surgery in Mice. LID - 10.3390/genes14010005 [doi] LID - 5 AB - BACKGROUND: Both caloric restriction (CR) and Roux-en-Y gastric bypass (RYGB) are practical interventions for type 2 diabetes mellitus (T2DM), while the molecular mechanisms of CR and RYGB regarding glycemic control are still poorly understood. Here, we explore the effects and underlying mechanisms of CR and RYGB on beta-cell area and function. METHODS: Average islet size was measured by histological analysis. The pancreatic lipid content was detected by using a commercial lipid assay kit. The expression levels of lipogenic transcription factors and enzymes in mouse pancreas were determined by quantitative PCR, Western blot, and immunofluorescence. RESULTS: CR decreased the mean size of islets and pancreatic insulin production in both regular diet-fed and high-fat diet-fed mice. Increased beta-cell apoptosis was detected in the calorie-restricted mice. Interestingly, the lipogenic transcription factors and enzymes such as SREBP1c, PPARgamma, FASN and ACC were upregulated in the pancreas after CR. In contrast to CR, RYGB decreased the apoptosis of beta-cells and the expression of fatty acid synthase. CONCLUSIONS: Pancreatic fatty acid synthesis is critical to the beta-cell function after CR and RYGB. FAU - Mo, Haocong AU - Mo H AD - Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. FAU - Liu, Yang AU - Liu Y AD - Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. FAU - Zhang, Mengyuan AU - Zhang M AD - Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. FAU - Qiu, Zirui AU - Qiu Z AD - Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. FAU - Li, Yilin AU - Li Y AD - Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. FAU - Zhang, Zhejiao AU - Zhang Z AD - Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. FAU - Li, Yanting AU - Li Y AD - Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. FAU - Xu, Geyang AU - Xu G AUID- ORCID: 0000-0002-5542-1350 AD - Department of Physiology, School of Medicine, Jinan University, 601 Huangpu Avenue West, Guangzhou 510632, China. AD - Center for Clinical Epidemiology and Methodology (CCEM), Guangdong Second Provincial General Hospital, Guangzhou 510317, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221220 PL - Switzerland TA - Genes (Basel) JT - Genes JID - 101551097 RN - 0 (Transcription Factors) RN - 0 (Fatty Acids) RN - 0 (Lipids) SB - IM MH - Mice MH - Animals MH - *Gastric Bypass MH - *Diabetes Mellitus, Type 2/metabolism MH - Caloric Restriction MH - Pancreas/metabolism MH - Transcription Factors MH - Fatty Acids MH - Lipids PMC - PMC9858859 OTO - NOTNLM OT - Roux-en-Y gastric bypass OT - apoptosis OT - caloric restriction OT - diabetes OT - fatty acid synthesis OT - beta-cell COIS- The authors declare no conflict of interest. EDAT- 2023/01/22 06:00 MHDA- 2023/01/25 06:00 PMCR- 2022/12/20 CRDT- 2023/01/21 01:14 PHST- 2022/10/03 00:00 [received] PHST- 2022/12/11 00:00 [revised] PHST- 2022/12/19 00:00 [accepted] PHST- 2023/01/21 01:14 [entrez] PHST- 2023/01/22 06:00 [pubmed] PHST- 2023/01/25 06:00 [medline] PHST- 2022/12/20 00:00 [pmc-release] AID - genes14010005 [pii] AID - genes-14-00005 [pii] AID - 10.3390/genes14010005 [doi] PST - epublish SO - Genes (Basel). 2022 Dec 20;14(1):5. doi: 10.3390/genes14010005.