PMID- 37334299 OWN - NLM STAT- MEDLINE DCOM- 20230620 LR - 20230620 IS - 1664-2392 (Print) IS - 1664-2392 (Electronic) IS - 1664-2392 (Linking) VI - 14 DP - 2023 TI - Obesity is associated with impaired postprandial pancreatic polypeptide secretion. PG - 1192311 LID - 10.3389/fendo.2023.1192311 [doi] LID - 1192311 AB - OBJECTIVE: This study aims to compare the levels of serum pancreatic polypeptide (PP), insulin (INS), C-peptide (C-P), and glucagon (GCG) before and after glucose stimulation in type 2 diabetes mellitus (T2DM) patients with different body mass indexes (BMI), analyze the relevant factors associated with PP secretion, and further investigate the role of PP in the development of obesity and diabetes. METHODS: Data were collected from 83 patients from the hospital. The subjects were divided into normal-weight group, overweight group, and obese group according to their BMI. All subjects were tested with the standard bread meal test (SBMT). PP and relevant parameters were measured, and the area under the curve (AUC) was calculated after 120 min of SBMT. AUC(pp) (AUC of PP) was used as the dependent variable, and the potential influencing factors were used as independent variables for multiple linear regression analysis. RESULTS: The obese and overweight groups had significantly lower PP secretion than the normal-weight group (485.95 pg.h/ml, 95% CI 76.16-895.74, p = 0.021; 664.61 pg.h/ml, 95% CI 285.46-1043.77, p = 0.001) at 60 min postprandial. PP secretion in the obese and overweight groups was also significantly lower than that in the normal-weight group (520.07 pg.h/ml, 95% CI 186.58-853.56, p = 0.003; 467.62 pg.h/ml, 95% CI 159.06-776.18, p = 0.003) at 120 min postprandial. AUC(pp) was negatively associated with BMI (r = -0.260, p = 0.017) and positively associated with AUC(GCG) (r = 0.501, p< 0.001). Multiple linear regression analysis showed that there was a linear correlation between AUC(GCG), BMI, and AUC(pp) (p< 0.001, p = 0.008). The regression equation was calculated as follows: AUC(pp) = 1772.255-39.65 x BMI + 0.957 x AUC(GCG) (R(2 = )54.1%, p< 0.001). CONCLUSION: Compared with normal-weight subjects, overweight and obese subjects had impaired PP secretion after glucose stimulation. In T2DM patients, PP secretion was mainly affected by BMI and GCG. CLINICAL TRIAL REGISTRY: The Ethics Committee of the Affiliated Hospital of Qingdao University. CLINICAL TRIAL REGISTRATION: http://www.chictr.org.cn, identifier ChiCTR2100047486. CI - Copyright (c) 2023 Zhao, Zhou, Chi, Che, Wang and Wang. FAU - Zhao, Yanyun AU - Zhao Y AD - Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China. FAU - Zhou, Yue AU - Zhou Y AD - Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China. FAU - Chi, Jingwei AU - Chi J AD - Medical Research Center, Qingdao Key Laboratory of Thyroid Diseases, Qingdao, China. FAU - Che, Kui AU - Che K AD - Medical Research Center, Qingdao Key Laboratory of Thyroid Diseases, Qingdao, China. FAU - Wang, Yangang AU - Wang Y AD - Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China. FAU - Wang, Wei AU - Wang W AD - Department of Hematology, Affiliated Hospital of Qingdao University, Qingdao, China. LA - eng PT - Journal Article DEP - 20230602 PL - Switzerland TA - Front Endocrinol (Lausanne) JT - Frontiers in endocrinology JID - 101555782 RN - 59763-91-6 (Pancreatic Polypeptide) RN - 9007-92-5 (Glucagon) RN - IY9XDZ35W2 (Glucose) SB - IM MH - Humans MH - *Overweight/complications MH - *Diabetes Mellitus, Type 2/complications MH - Pancreatic Polypeptide MH - Obesity/complications MH - Glucagon MH - Glucose PMC - PMC10273268 OTO - NOTNLM OT - T2DM OT - glucagon OT - islet function OT - obesity OT - pancreatic polypeptide COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/06/19 06:41 MHDA- 2023/06/20 06:42 PMCR- 2023/01/01 CRDT- 2023/06/19 03:05 PHST- 2023/03/23 00:00 [received] PHST- 2023/05/10 00:00 [accepted] PHST- 2023/06/20 06:42 [medline] PHST- 2023/06/19 06:41 [pubmed] PHST- 2023/06/19 03:05 [entrez] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.3389/fendo.2023.1192311 [doi] PST - epublish SO - Front Endocrinol (Lausanne). 2023 Jun 2;14:1192311. doi: 10.3389/fendo.2023.1192311. eCollection 2023.