PMID- 35044600 OWN - NLM STAT- MEDLINE DCOM- 20220426 LR - 20220531 IS - 1708-0428 (Electronic) IS - 0960-8923 (Linking) VI - 32 IP - 4 DP - 2022 Apr TI - Rise in Postprandial GLP-1 Levels After Roux-en-Y Gastric Bypass: Involvement of the Vagus Nerve-Spleen Anti-inflammatory Axis in Type 2 Diabetic Rats. PG - 1077-1085 LID - 10.1007/s11695-021-05877-x [doi] AB - PURPOSE: The mechanism underlying postprandial glucagon-like peptide-1 (GLP-1) changes after metabolic surgery remains mostly unclarified. This investigation aimed to address whether the vagus nerve-spleen anti-inflammatory axis is involved in the rise in postprandial GLP-1 levels in type 2 diabetes mellitus (T2DM) rats following metabolic surgery. MATERIALS AND METHODS: T2DM rat model was established with a high-fat diet and a low dose of streptozotocin and subjected to Roux-en-Y gastric bypass (RYGB) and splenic denervation. A mixed-meal tolerance test for postprandial GLP-1 response was performed. TNF-alpha in the plasma, spleen, and ileum was measured by ELISA, and alpha 7 nicotinic acetylcholine receptor (alpha7nAChR) expression in the spleen was analyzed by Western blot. RESULTS: Postprandial GLP-1 improvement by RYGB was accompanied by the reduction of TNF-alpha levels in spleen and ileum and up-regulation of splenic alpha7nAChR in T2DM rats. Splenic denervation abrogates a rise in postprandial GLP-1 levels in response to the mixed-meal challenge, along with higher TNF-alpha levels in spleen and ileum and down-regulation of splenicalpha7nAChR, compared with denervated sham rats. CONCLUSION: Our results reveal that the vagus nerve-spleen anti-inflammatory axis mediates the rise of postprandial GLP-1 response after RYGB through lowering TNF-alpha contents in the intestinal tissue in T2DM rats. CI - (c) 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Xiao, Yan AU - Xiao Y AD - Department of Day Surgery Center, Zhuzhou Central Hospital, Zhuzhou, 412000, China. FAU - Tan, Chang AU - Tan C AD - Department of Gynecology, Zhuzhou Central Hospital, Zhuzhou, 412000, China. FAU - Nie, Xiaoya AU - Nie X AD - Department of General Medicine, Zhuzhou Central Hospital, No. 116 Changjiang Road, Zhuzhou, 412000, China. FAU - Li, Baifeng AU - Li B AD - Department of Day Surgery Center, Zhuzhou Central Hospital, Zhuzhou, 412000, China. FAU - You, Miao AU - You M AD - Department of Day Surgery Center, Zhuzhou Central Hospital, Zhuzhou, 412000, China. FAU - Lan, Yunyun AU - Lan Y AD - Department of Intensive Care Unit, Zhuzhou Central Hospital, No.116 Changjiang Road, Zhuzhou, 412000, China. lanyunyunzz@outlook.com. FAU - Tang, Liang AU - Tang L AUID- ORCID: 0000-0002-9603-1535 AD - Department of General Medicine, Zhuzhou Central Hospital, No. 116 Changjiang Road, Zhuzhou, 412000, China. cntangliang@outlook.com. LA - eng PT - Journal Article DEP - 20220119 PL - United States TA - Obes Surg JT - Obesity surgery JID - 9106714 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Blood Glucose) RN - 0 (Insulin) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (alpha7 Nicotinic Acetylcholine Receptor) RN - 89750-14-1 (Glucagon-Like Peptide 1) SB - IM MH - Animals MH - Anti-Inflammatory Agents MH - Blood Glucose/metabolism MH - *Diabetes Mellitus, Experimental/metabolism MH - *Diabetes Mellitus, Type 2 MH - *Gastric Bypass/methods MH - Glucagon-Like Peptide 1 MH - Humans MH - Insulin MH - *Obesity, Morbid/surgery MH - Rats MH - Spleen/chemistry/metabolism/surgery MH - Tumor Necrosis Factor-alpha/metabolism MH - Vagus Nerve/surgery MH - alpha7 Nicotinic Acetylcholine Receptor OTO - NOTNLM OT - Glucagon-like peptide-1 OT - Roux-en-Y gastric bypass OT - Spleen OT - Type 2 diabetes mellitus OT - Vagus nerve anti-inflammatory pathway EDAT- 2022/01/20 06:00 MHDA- 2022/04/27 06:00 CRDT- 2022/01/19 12:32 PHST- 2021/05/11 00:00 [received] PHST- 2021/12/30 00:00 [accepted] PHST- 2021/12/30 00:00 [revised] PHST- 2022/01/20 06:00 [pubmed] PHST- 2022/04/27 06:00 [medline] PHST- 2022/01/19 12:32 [entrez] AID - 10.1007/s11695-021-05877-x [pii] AID - 10.1007/s11695-021-05877-x [doi] PST - ppublish SO - Obes Surg. 2022 Apr;32(4):1077-1085. doi: 10.1007/s11695-021-05877-x. Epub 2022 Jan 19.