PMID- 34025574 OWN - NLM STAT- MEDLINE DCOM- 20211220 LR - 20211220 IS - 1664-2392 (Print) IS - 1664-2392 (Electronic) IS - 1664-2392 (Linking) VI - 12 DP - 2021 TI - Berberine Slows the Progression of Prediabetes to Diabetes in Zucker Diabetic Fatty Rats by Enhancing Intestinal Secretion of Glucagon-Like Peptide-2 and Improving the Gut Microbiota. PG - 609134 LID - 10.3389/fendo.2021.609134 [doi] LID - 609134 AB - BACKGROUND: Berberine is a plant alkaloid that has multiple beneficial effects against intestine inflammation. In our previous study, we have found that berberine also possesses an antidiabetic effect. However, whether berberine is useful in the prevention of type 2 diabetes mellitus (T2DM) through its effect on intestine endocrine function and gut microbiota is unclear. AIM: To investigate the effects of berberine in the prevention of T2DM, as well as its effects on intestine GLP-2 secretion and gut microbiota in ZDF rats. METHODS: Twenty Zucker Diabetic Fatty (ZDF) rats were fed a high-energy diet until they exhibited impaired glucose tolerance (IGT). The rats were then divided into two groups to receive berberine (100 mg/kg/d; berberine group) or vehicle (IGT group) by gavage for 3 weeks. Five Zucker Lean (ZL) rats were used as controls. Fasting blood glucose (FBG) was measured, an oral glucose tolerance test was performed, and the Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) was calculated. Intestinal expression of TLR-4, NF-kappaB, TNF-alpha, mucin, zona occludens-1 (ZO-1) and occludin were assessed (immunohistochemistry). Plasma levels and glutamine-induced intestinal secretion of glucagon-like peptide-1 (GLP-1) and GLP-2 were measured (enzyme-linked immunosorbent assay). The plasma lipopolysaccharide (LPS) level was measured. Fecal DNA extraction, pyrosequencing, and bioinformatics analysis were performed. RESULTS: After 3 weeks of intervention, diabetes developed in all rats in the IGT group, but only 30% of rats in the berberine group. Treatment with berberine was associated with reductions in food intake, FBG level, insulin resistance, and plasma LPS level, as well as increases in fasting plasma GLP-2 level and glutamine-induced intestinal GLP-2 secretion. Berberine could increase the goblet cell number and villi length, and also reverse the suppressed expressions of mucin, occludin, ZO-1 and the upregulated expressions of TLR-4, NF-kappaB and TNF-alpha induced in IGT rats (P<0.05). Berberine also improved the structure of the gut microbiota and restored species diversity. CONCLUSION: Berberine may slow the progression of prediabetes to T2DM in ZDF rats by improving GLP-2 secretion, intestinal permeability, and the structure of the gut microbiota. CI - Copyright (c) 2021 Wang, Liu, Zheng, Yang, Ren, Kong, Wang, Wang, Jiang, Yang and Shan. FAU - Wang, Ying AU - Wang Y AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. FAU - Liu, Haiyi AU - Liu H AD - Department of Pediatrics, Cangzhou People's Hospital, Cangzhou, China. FAU - Zheng, Miaoyan AU - Zheng M AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. FAU - Yang, Yanhui AU - Yang Y AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. FAU - Ren, Huizhu AU - Ren H AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. FAU - Kong, Yan AU - Kong Y AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. FAU - Wang, Shanshan AU - Wang S AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. FAU - Wang, Jingyu AU - Wang J AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. FAU - Jiang, Yingying AU - Jiang Y AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. FAU - Yang, Juhong AU - Yang J AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. FAU - Shan, Chunyan AU - Shan C AD - National Health Council (NHC) Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210507 PL - Switzerland TA - Front Endocrinol (Lausanne) JT - Frontiers in endocrinology JID - 101555782 RN - 0 (Glucagon-Like Peptide 2) RN - 0I8Y3P32UF (Berberine) SB - IM MH - Animals MH - Berberine/*pharmacology/therapeutic use MH - Cells, Cultured MH - Diabetes Mellitus, Experimental/metabolism/microbiology/prevention & control MH - Diabetes Mellitus, Type 2/metabolism/microbiology/prevention & control MH - Disease Progression MH - Gastrointestinal Microbiome/*drug effects MH - Glucagon-Like Peptide 2/*metabolism MH - Intestinal Mucosa/*drug effects/metabolism/microbiology/pathology MH - Intestinal Secretions/drug effects/metabolism MH - Male MH - Obesity/complications/metabolism/microbiology/pathology MH - *Prediabetic State/drug therapy/metabolism/microbiology/pathology MH - Rats MH - Rats, Zucker PMC - PMC8138858 OTO - NOTNLM OT - berberine OT - glucagon-like peptide-2 OT - intestinal microbiota OT - intestinal permeability OT - type 2 diabetes mellitus 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- 2021/05/25 06:00 MHDA- 2021/12/21 06:00 PMCR- 2021/01/01 CRDT- 2021/05/24 08:04 PHST- 2020/09/22 00:00 [received] PHST- 2021/04/06 00:00 [accepted] PHST- 2021/05/24 08:04 [entrez] PHST- 2021/05/25 06:00 [pubmed] PHST- 2021/12/21 06:00 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fendo.2021.609134 [doi] PST - epublish SO - Front Endocrinol (Lausanne). 2021 May 7;12:609134. doi: 10.3389/fendo.2021.609134. eCollection 2021.