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Pan G, Lu Y, Wei Z, Li Y, Li L, Pan X. A review on the in vitro and in vivo screening of α-glucosidase inhibitors. Heliyon 2024; 10:e37467. [PMID: 39309836 PMCID: PMC11415703 DOI: 10.1016/j.heliyon.2024.e37467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 09/02/2024] [Accepted: 09/04/2024] [Indexed: 09/25/2024] Open
Abstract
As a global metabolic disease, the control and treatment of diabetes have always been the focus of medical research. α-Glucosidase is a key enzyme in regulating blood glucose levels and has important applications in the treatment of diabetes. This review aims to explore the enzyme activity of α-glucosidase and its inhibition mechanism and evaluate the efficacy and limitations of existing inhibitor screening methods. First, the chemical structure, biological activity, and influencing factors of α-glucosidase on diabetes are discussed in detail. Then, the various methods that have been used to screen α-glucosidase inhibitors in recent years are reviewed, including in vivo animal experiments, in vitro experiments, and virtual molecular docking. The experimental principles, advantages, and limitations of each method and their application in discovering new inhibitors are also discussed. Finally, this review emphasizes the importance of developing efficient and safe α-glucosidase inhibitors, summarizes the advantages and disadvantages of various screening models, and proposes future research directions. This review comprehensively examines the enzyme activity of α-glucosidase and the screening methods for α-glucosidase inhibitors, provides an important perspective in the field of diabetes drug discovery and development, and provides a reference for future research.
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Affiliation(s)
- Guangjuan Pan
- Guangxi University of Chinese Medicine, Nanning, 530200, China
| | - Yantong Lu
- Guangxi University of Chinese Medicine, Nanning, 530200, China
| | - Zhiying Wei
- Guangxi University of Chinese Medicine, Nanning, 530200, China
| | - Yaohua Li
- Guangxi University of Chinese Medicine, Nanning, 530200, China
| | - Li Li
- Guangxi University of Chinese Medicine, Nanning, 530200, China
- Guangxi Key Laboratory of Zhuang and Yao Ethnic Medicine, Nanning, 530200, China
- The Collaborative Innovation Center of Zhuang and Yao Ethnic Medicine, Nanning, 530200, China
- Guangxi Engineering Research Center of Ethnic Medicine Resources and Application, Nanning, 530200, China
| | - Xiaojiao Pan
- Guangxi University of Chinese Medicine, Nanning, 530200, China
- Guangxi Key Laboratory of Zhuang and Yao Ethnic Medicine, Nanning, 530200, China
- The Collaborative Innovation Center of Zhuang and Yao Ethnic Medicine, Nanning, 530200, China
- Guangxi Engineering Research Center of Ethnic Medicine Resources and Application, Nanning, 530200, China
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Kheawchaum S, Thongnest S, Boonsombat J, Batsomboon P, Mahidol C, Prawat H, Ruchirawat S. Chemical profile and biological activities of Lysiphyllum binatum (Blanco) de Wit. J Nat Med 2024:10.1007/s11418-024-01844-9. [PMID: 39320607 DOI: 10.1007/s11418-024-01844-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Accepted: 09/11/2024] [Indexed: 09/26/2024]
Abstract
Lysiphyllum binatum (Blanco) de Wit in the Fabaceae family, despite its traditional medicinal uses, has not been the subject of prior scientific inquiry into its chemical and biological profile. The dichloromethane and MeOH extracts of its roots exhibited notably similar antioxidant activity, while the dichloromethane extract of the vine stems showed aromatase inhibition. This study aimed to identify the bioactive components responsible for these activities. Chemical investigation of the roots led to the isolation of six new metabolites, named lysiphans A-F (1-6), along with eight known compounds (7-14). The vine stem yielded lysiphan C (3) and compound 7, as well as five known isolates (15-19). The structures of these metabolites were determined through NMR spectral analysis, HRESIMS, quantum chemical calculations of NMR and ECD spectra, and Mosher's modifications to establish their absolute configurations. The biogenetic relationships between the new compounds were proposed. Several of the isolates were evaluated for their antioxidant, anti-aromatase, and cytotoxic properties. Lysiphan B (2) exhibited significant antioxidant activity, with an IC50 value of 28.8 ± 0.4 μM in the diphenyl picrylhydrazyl radical (DPPH) assay, 3.5 ± 0.2 μM in the xanthine/xanthine oxidase (XXO) assay, and 1.5 ± 0.0 ORAC units in oxygen radical absorbance capacity (ORAC) assay. Additionally, compounds 12, 13, and 16 exhibited very strong aromatase inhibitory activity with IC50 values of 0.3 ± 0.2, 4.7 ± 0.1, and 0.9 ± 0.2 µM, respectively. Compound 16 also demonstrated strong ORAC activity of 1.9 ± 0.1 ORAC units.
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Affiliation(s)
- Surasak Kheawchaum
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, 10210, Thailand
| | - Sanit Thongnest
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, 10210, Thailand
- Center of Excellence On Environmental Health and Toxicology (EHT), OPS, MHESI, Bangkok, Thailand
| | - Jutatip Boonsombat
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, 10210, Thailand
- Center of Excellence On Environmental Health and Toxicology (EHT), OPS, MHESI, Bangkok, Thailand
| | - Paratchata Batsomboon
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Bangkok, 10210, Thailand
| | - Chulabhorn Mahidol
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, 10210, Thailand
- Program in Chemical Sciences, Chulabhorn Graduate Institute, Bangkok, 10210, Thailand
| | - Hunsa Prawat
- Laboratory of Natural Products, Chulabhorn Research Institute, Bangkok, 10210, Thailand.
- Center of Excellence On Environmental Health and Toxicology (EHT), OPS, MHESI, Bangkok, Thailand.
| | - Somsak Ruchirawat
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Bangkok, 10210, Thailand
- Program in Chemical Sciences, Chulabhorn Graduate Institute, Bangkok, 10210, Thailand
- Center of Excellence On Environmental Health and Toxicology (EHT), OPS, MHESI, Bangkok, Thailand
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Zhao Q, Yang J, Li J, Zhang L, Yan X, Yue T, Yuan Y. Hypoglycemic effect and intestinal transport of phenolics-rich extract from digested mulberry leaves in Caco-2/insulin-resistant HepG2 co-culture model. Food Res Int 2024; 175:113689. [PMID: 38129030 DOI: 10.1016/j.foodres.2023.113689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/02/2023] [Accepted: 11/06/2023] [Indexed: 12/23/2023]
Abstract
Phenolics of mulberry (Morus alba L.) leaves (MLs) have potential anti-diabetic effects, but they may be chemically modified during gastrointestinal digestion so affect their biological activity. In this study, an in vitro digestion model coupled with Caco-2 monolayer and Caco-2/insulin-resistant HepG2 coculture model were used to study the transport and hypoglycemic effects of phenolics in raw MLs (U-MLs) and solid-fermented MLs (F-MLs). The results of LC-MS/MS analysis showed that the Papp (apparent permeability coefficient, 10-6cm/s) of phenolics in digested MLs ranged from 0.002 ± 0.00 (quercetin 3-O-glucoside) to 60.19 ± 0.67 (ferulic acid), indicating higher phenolic acids absorbability and poor flavonoids absorbability. The Papp values of phenolic extracts of F-MLs in Caco-2 monolayer were significantly higher (p > 0.05) than that of U-MLs. Digested phenolic extracts inhibited the activities of sucrase (60.13 ± 2.03 %) and maltase (82.35 ± 0.78 %) and decreased 9.28 ± 0.84 % of glucose uptake in Caco-2 monolayer. Furthermore, a decrease in the mRNA expression of glucose transporters SGLT1 (0.64 ± 0.18), GLUT2 (0.14 ± 0.02) and the sucrase-isomaltase (0.59 ± 0.00) was observed. In Caco-2/insulin-resistant HepG2 co-culture model, phenolic extracts regulated glucose metabolism by up-regulating the mRNA expressions of IRS1 (9.32-fold), Akt (17.07-fold) and GYS2 (1.5-fold), and down-regulating the GSK-3β (0.22-fold), PEPCK (0.49-fold) and FOXO1 (0.10-fold) mRNA levels. Both U-MLs and F-MLs could improve glucose metabolism, and the partial least squares (PLS) analysis showed that luteoforol and p-coumaric acid were the primary phenolics that strongly correlated with the hypoglycemic ability of MLs. Results suggested that phenolics of MLs can be used as dietary supplements to regulate glucose metabolism.
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Affiliation(s)
- Qiannan Zhao
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Jinyi Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Jiahui Li
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Lei Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Xiaohai Yan
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China; College of Food Science and Techonology, Northwest University, Xi'an 710069, China.
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China; College of Food Science and Techonology, Northwest University, Xi'an 710069, China.
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Goli AS, Sato VH, Sato H, Chewchinda S, Leanpolchareanchai J, Nontakham J, Yahuafai J, Thilavech T, Meesawatsom P, Maitree M. Antihyperglycemic effects of Lysiphyllum strychnifolium leaf extract in vitro and in vivo. PHARMACEUTICAL BIOLOGY 2023; 61:189-200. [PMID: 36625086 PMCID: PMC9848344 DOI: 10.1080/13880209.2022.2160771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 11/05/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
CONTEXT Lysiphyllum strychnifolium (Craib) A. Schmitz (LS) (Fabaceae) has traditionally been used to treat diabetes mellitus. OBJECTIVE This study demonstrates the antidiabetic and antioxidant effects of aqueous extract of LS leaves in vivo and in vitro. MATERIALS AND METHODS The effects of aqueous LS leaf extract on glucose uptake, sodium-dependent glucose cotransporter 1 (SGLT1) and glucose transporter 2 (GLUT2) mRNA expression in Caco-2 cells, α-glucosidase, and lipid peroxidation were evaluated in vitro. The antidiabetic effects were evaluated using an oral glucose tolerance test (OGTT) and a 28-day consecutive administration to streptozotocin (STZ)-nicotinamide (NA)-induced type 2 diabetic mice. RESULTS The extract significantly inhibited glucose uptake (IC50: 236.2 ± 36.05 µg/mL) and downregulated SGLT1 and GLUT2 mRNA expression by approximately 90% in Caco-2 cells. Furthermore, it non-competitively inhibited α-glucosidase in a concentration-dependent manner with the IC50 and Ki of 6.52 ± 0.42 and 1.32 µg/mL, respectively. The extract at 1000 mg/kg significantly reduced fasting blood glucose levels in both the OGTT and 28-day consecutive administration models as compared with untreated STZ-NA-induced diabetic mice (p < 0.05). Significant improvements of serum insulin, homeostasis model assessment of insulin resistance (HOMA-IR), and GLUT4 levels were observed. Furthermore, the extract markedly decreased oxidative stress markers by 37-53% reduction of superoxide dismutase 1 (SOD1) in muscle and malondialdehyde (MDA) in muscle and pancreas, which correlated with the reduction of MDA production in vitro (IC50: 24.80 ± 7.24 µg/mL). CONCLUSION The LS extract has potent antihyperglycemic activity to be used as alternative medicine to treat diabetes mellitus.
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Affiliation(s)
- Arman Syah Goli
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Thailand
| | - Vilasinee Hirunpanich Sato
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Thailand
- Center of Biopharmaceutical Science for Healthy Ageing, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Hitoshi Sato
- Division of Pharmacokinetics and Pharmacodynamics, Department of Pharmacology, Toxicology and Therapeutics, School of Pharmacy, Showa University, Japan
| | - Savita Chewchinda
- Department of Food Chemistry, Faculty of Pharmacy, Mahidol University, Thailand
| | | | - Jannarin Nontakham
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Thailand
- Clinical Research Section, Division of Research and Academic Support, National Cancer Institute, Bangkok, Thailand
| | - Jantana Yahuafai
- Clinical Research Section, Division of Research and Academic Support, National Cancer Institute, Bangkok, Thailand
| | - Thavaree Thilavech
- Department of Food Chemistry, Faculty of Pharmacy, Mahidol University, Thailand
| | - Pongsatorn Meesawatsom
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, Thailand
- Center of Biopharmaceutical Science for Healthy Ageing, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Metawee Maitree
- Department of Food Chemistry, Faculty of Pharmacy, Mahidol University, Thailand
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Bellachioma L, Morresi C, Albacete A, Martínez-Melgarejo PA, Ferretti G, Giorgini G, Galeazzi R, Damiani E, Bacchetti T. Insights on the Hypoglycemic Potential of Crocus sativus Tepal Polyphenols: An In Vitro and In Silico Study. Int J Mol Sci 2023; 24:ijms24119213. [PMID: 37298165 DOI: 10.3390/ijms24119213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/19/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Post-prandial hyperglycemia typical of diabetes mellitus could be alleviated using plant-derived compounds such as polyphenols, which could influence the activities of enzymes involved in carbohydrate digestion and of intestinal glucose transporters. Here, we report on the potential anti-hyperglycemic effect of Crocus sativus tepals compared to stigmas, within the framework of valorizing these by-products of the saffron industry, since the anti-diabetic properties of saffron are well-known, but not those of its tepals. In vitro assays showed that tepal extracts (TE) had a greater inhibitory action than stigma extracts (SE) on α-amylase activity (IC50: TE = 0.60 ± 0.09 mg/mL; SE = 1.10 ± 0.08 mg/mL; acarbose = 0.051 ± 0.07) and on glucose absorption in Caco-2 differentiated cells (TE = 1.20 ± 0.02 mg/mL; SE = 2.30 ± 0.02 mg/mL; phlorizin = 0.23 ± 0.01). Virtual screening performed with principal compounds from stigma and tepals of C. sativus and human pancreatic α-amylase, glucose transporter 2 (GLUT2) and sodium glucose co-transporter-1 (SGLT1) were validated via molecular docking, e.g., for human pancreatic α-amylase, epicatechin 3-o-gallate and catechin-3-o-gallate were the best scored ligands from tepals (-9.5 kcal/mol and -9.4 kcal/mol, respectively), while sesamin and episesamin were the best scored ones from stigmas (-10.1 kcal/mol). Overall, the results point to the potential of C. sativus tepal extracts in the prevention/management of diabetes, likely due to the rich pool of phytocompounds characterized using high-resolution mass spectrometry, some of which are capable of binding and interacting with proteins involved in starch digestion and intestinal glucose transport.
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Affiliation(s)
- Luisa Bellachioma
- Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
| | - Camilla Morresi
- Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
| | - Alfonso Albacete
- Centro de Edafología y Biología Aplicada del Segura, Agencia Estatal Consejo Superior de Investigaciones Científicas (CEBAS-CSIC), Department of Plant Nutrition, Campus Universitario de Espinardo, E-30100 Murcia, Spain
| | - Purificación A Martínez-Melgarejo
- Centro de Edafología y Biología Aplicada del Segura, Agencia Estatal Consejo Superior de Investigaciones Científicas (CEBAS-CSIC), Department of Plant Nutrition, Campus Universitario de Espinardo, E-30100 Murcia, Spain
| | - Gianna Ferretti
- Department of Clinical Science and Odontostomatology, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
| | - Giorgia Giorgini
- Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
| | - Roberta Galeazzi
- Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
| | - Elisabetta Damiani
- Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
| | - Tiziana Bacchetti
- Department of Life and Environmental Sciences, Marche Polytechnic University, Via Brecce Bianche, 60131 Ancona, Italy
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Kuendee N, Naladta A, Kulsirirat T, Yimsoo T, Yingmema W, Pansuksan K, Sathirakul K, Sukprasert S. Lysiphyllum strychnifolium (Craib) A. Schmitz Extracts Moderate the Expression of Drug-Metabolizing Enzymes: In Vivo Study to Clinical Propose. Pharmaceuticals (Basel) 2023; 16:237. [PMID: 37259384 PMCID: PMC9961159 DOI: 10.3390/ph16020237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/27/2023] [Accepted: 02/01/2023] [Indexed: 09/14/2024] Open
Abstract
Lysiphyllum strychnifolium (Craib) A. Schmitz (LS) has been traditionally used as a medicinal herb by folk healers in Thailand with rare evidence-based support. Hepatic cytochrome P450s (CYPs450) are well known as the drug-metabolizing enzymes that catalyze all drugs and toxicants. In this study, we investigated the mRNA levels of six clinically important CYPs450, i.e., CYP1A2, 3A2, 2C11, 2D1, 2D2, and 2E1, in rats given LS extracts. Seventy Wistar rats were randomized into seven groups (n = 10). Each group was given LS stem ethanol (SE) and leaf water (LW) extracts orally at doses of 300, 2000, and 5000 mg/kg body weight (mg/kg.bw) for twenty-eight consecutive days. After treatment, the expression of CYPs450 genes was measured using quantitative real-time PCR. The results revealed that SE and LW, which contained quercetin and gallic acid, promoted the upregulation of all CYPs450. Almost all CYPs450 genes were downregulated in all male LW-treated rats but upregulated in female-treated groups, suggesting that CYP gene expressions in LS-treated rats were influenced by gender. Moderate and high doses of the LS extracts had a tendency to induce six CYP450s' transcription levels in both rat genders. CYP2E1 gene showed a unique expression level in male rats receiving SE at a dose of 2000 mg/kg.bw, whereas a low dose of 300 mg/kg.bw was found in the LW-treated female group. As a result, our findings suggest that different doses of LS extracts can moderate the varying mRNA expression of clinically relevant CYP genes. In this study, we provide information about CYP induction and inhibition in vivo, which could be a desirable condition for furthering the practical use of LS extracts in humans.
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Affiliation(s)
- Natthaporn Kuendee
- Faculty of Veterinary Medicine, Rajamangala University of Technology Tawan-ok, Chonburi 20110, Thailand
| | - Alisa Naladta
- Department of Biochemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Thitianan Kulsirirat
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
| | - Thunyatorn Yimsoo
- Animal Center, Thammasat University (Rangsit Campus), Pathum Thani 12120, Thailand
| | - Werayut Yingmema
- Animal Center, Thammasat University (Rangsit Campus), Pathum Thani 12120, Thailand
| | - Kanoktip Pansuksan
- Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Pathum Thani 12120, Thailand
| | - Korbtham Sathirakul
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
| | - Sophida Sukprasert
- Chulabhorn International College of Medicine, Thammasat University (Rangsit Campus), Pathum Thani 12120, Thailand
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Effects of 6-Shogaol on Glucose Uptake and Intestinal Barrier Integrity in Caco-2 Cells. Foods 2023; 12:foods12030503. [PMID: 36766032 PMCID: PMC9913893 DOI: 10.3390/foods12030503] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 01/10/2023] [Accepted: 01/17/2023] [Indexed: 01/25/2023] Open
Abstract
As the main bioactive component in dried ginger, 6-shogaol has potential hypoglycemic activity, but its mechanism is still unclear. The process of carbohydrate digestion and glucose absorption is closely related to the enzymatic activity of epithelial brush cells, expression of glucose transporters, and permeability of intestinal epithelial cells. Therefore, this study explored the hypoglycemic mechanism of 6-shogaol from the perspective of glucose uptake, absorption transport, and protection of intestinal barrier function. Based on molecular docking, the binding energy of 6-shogaol and α-glucosidase is -6.24 kcal/mol, showing a high binding affinity. Moreover, a-glucosidase enzymatic activity was reduced (-78.96%) when the 6-shogaol concentration was 500 µg/mL. After 6-shogaol intervention, the glucose uptake was reduced; the relative expression of glucose transporters GLUT2 and SGLT1 were down regulated; and tight junction proteins ZO-1, Occludin and Claudin were up regulated in differentiated Caco-2 cells. This study confirmed that 6-shogaol effectively inhibits the activity of α-glucosidase and has beneficial effects on glucose uptake, protection of intestinal barrier function, and promotion of intestinal material absorption.
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