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Fang J, Lin Y, Xie H, Farag MA, Feng S, Li J, Shao P. Dendrobium officinale leaf polysaccharides ameliorated hyperglycemia and promoted gut bacterial associated SCFAs to alleviate type 2 diabetes in adult mice. Food Chem X 2022; 13:100207. [PMID: 35498995 PMCID: PMC9039915 DOI: 10.1016/j.fochx.2022.100207] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 11/17/2021] [Accepted: 01/05/2022] [Indexed: 02/07/2023] Open
Abstract
Fractions of LDOP show the hypoglycemic effect and can restore histological function of T2D mice. There is a difference in the anti-T2D effect between LDOP-A and LDOP-B. LDOP-A modulated the gut microbiota composition of T2D mice. LDOP-A promotes the formation of SCFAs in T2D mice, especially butyric acid. Compared with LDOP-B, LDOP-A shows greater potential to ameliorate T2D.
The present study aimed to explore the possible mechanisms underlying Dendrobium officinale leaf polysaccharides of different molecular weight to alleviate glycolipid metabolic abnormalities, organ dysfunction and gut microbiota dysbiosis of T2D mice. An ultrafiltration membrane was employed to separate two fractions from Dendrobium officinale leaf polysaccharide named LDOP-A and LDOP-B. Here, we present data supporting that oral administration of LDOP-A and LDOP-B ameliorated hyperglycemia, inhibited insulin resistance, reduced lipid concentration, improved β-cell function. LDOP-A with lower molecular weight exhibited improved effect on diabetes than LDOP-B, concurrent with increased levels of colonic short-chain fatty acids (SCFAs) i.e., butyrate, decreased ratio of Firmicutes to Bacteroidetes phyla, and increased abundance of the gut beneficial bacteria i.e., Lactobacillus, Bifidobacterium and Akkermansia. These results suggest that LDOP-A possesses a stronger effect in ameliorating T2D than LDOP-B which may be related to the distinct improved SCFAs levels produced by the change of intestinal flora microstructure.
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Key Words
- AUC, The area under the concentration–time curve
- Dendrobium officinale
- FBG, fasting blood glucose
- FT-IR, Fourier-transform infrared
- GLP-1, glucagon-like peptide-1
- GLUT4, glucose transporter type 4
- H&E, hematoxylin and eosin
- HDL-c, high-density lipoprotein cholesterol
- HFD, high-fat diet
- HOMA-IR, homeostasis model assessment-insulin resistance
- HOMA-β, β-cell sensitivity
- IC, ion Chromatography
- IL-6, interleukin-6
- Intestinal microflora
- LDL-c, low-density lipoprotein cholesterol
- LDOP, Dendrobium officinale leaf polysaccharide
- Mw, molecular weight
- OGTT, oral glucose tolerance test
- OTUs, operational taxonomic units
- PAS, periodic acid-Schiff
- PYY, peptide YY
- Polysaccharide
- SCFAs, short chain fatty acids
- STZ, streptozotocin
- Short-chain fatty acids
- T2D, Type 2 Diabetic
- TG, triglycerides
- TNF-α, tumor necrosis factor-alpha
- Type 2 Diabetes
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Affiliation(s)
- Jingyu Fang
- Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, China
| | - Yang Lin
- Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, China
| | - Hualing Xie
- Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, China
| | - Mohamed A Farag
- Pharmacognosy Department, College of Pharmacy, Cairo University, Kasr El Aini St., Cairo, 11562, Egypt.,Department of Chemistry, School of Science & Engineering, The American University in Cairo, New Cairo 11835, Egypt
| | - Simin Feng
- Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, China
| | - Jinjun Li
- Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Ping Shao
- Department of Food Science and Technology, Zhejiang University of Technology, Zhejiang, Hangzhou 310014, China.,Key Laboratory of Food Macromolecular Resources Processing Technology Research, China National Light Industry, Hangzhou 310021, China
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