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Calonico K, De La Rosa-Millan J. Digestion-Related Enzyme Inhibition Potential of Selected Mexican Medicinal Plants ( Ludwigia octovalvis (Jacq.) P.H.Raven, Cnidoscolus aconitifolius and Crotalaria longirostrata). Foods 2023; 12:3529. [PMID: 37835184 PMCID: PMC10572748 DOI: 10.3390/foods12193529] [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: 08/16/2023] [Revised: 09/03/2023] [Accepted: 09/07/2023] [Indexed: 10/15/2023] Open
Abstract
Medicinal plants offer a valuable source of natural compounds with specific and selective bioactivity. These compounds have been isolated since the mid-nineteenth century and are now commonly used in modern medications. L. octovalvis (Jacq.) P.H.Raven, C. aconitifolius, and C. longirostrata are Mexican medicinal plants consumed regularly, and research has shown that they contain bioactive compounds capable of promoting the inhibition of digestive enzymes. This is noteworthy since enzyme inhibitors are bioactive substances that interact with enzymes, diminishing their activity and thereby contributing to the management of diseases and metabolic disturbances. To investigate the activity of these plants, individual analyses were conducted, assessing their proximal composition, bioactive compounds, and inhibition of α-Amylase, α-Glucosidase, lipase, and pepsin. The results revealed that all three plants exhibited enzymatic inhibition. When comparing the plants, it was determined that C. aconitifolius had the lowest concentration required for a 50% inhibition in α-Amylase, α-Glucosidase, and lipase, as indicated by the IC50 values. For pepsin, C. longirostrata demonstrated the lowest IC50 value. By understanding the bioactive compounds present in these plants, we can establish the relationship they have with enzymatic inhibition, which can be utilized for future investigations.
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Affiliation(s)
- Kimberly Calonico
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, BioFoods Research Lab, Av. Eugenio Garza Sada 2501 Sur, Tecnologico, Monterrey 64849, Nuevo Leon, Mexico;
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Geraris Kartelias I, Karantonis HC, Giaouris E, Panagiotakopoulos I, Nasopoulou C. Kombucha Fermentation of Olympus Mountain Tea ( Sideritis scardica) Sweetened with Thyme Honey: Physicochemical Analysis and Evaluation of Functional Properties. Foods 2023; 12:3496. [PMID: 37761205 PMCID: PMC10528074 DOI: 10.3390/foods12183496] [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: 08/22/2023] [Revised: 09/15/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
This study implemented kombucha fermentation of Olympus Mountain tea (Sideritis scardica) sweetened with honey (OMTWH) in order to investigate the potential for producing a novel beverage with functional properties. The increase in the total count of bacteria and yeast suggests that the OMTWH acts as a viable substrate for supporting the proliferation of the microorganisms of the Kombucha symbiotic culture. The fermentation resulted in a reduction in pH and increased total titratable acidity. After fermentation, a statistically significant increase in the vitamins C, B1, B2, B6, B7, and B12 content was observed (p < 0.05). Total phenolics and antioxidant activity of the fermented beverage was significantly enhanced, as assessed by the method of Folin-Ciocalteu and ABTS assay, respectively. Results revealed that OMTWH had a potent inhibitory activity of α-amylase, α-glucosidase, acetylcholinesterase, and butyrylcholinesterase; OMTWH fermented with a kombucha consortium exhibited even higher inhibition. Hence, the process of kombucha fermentation can convert OMTWH into a novel beverage with enhanced functional properties.
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Affiliation(s)
- Ioannis Geraris Kartelias
- Laboratory of Food Chemistry and of Technology and Quality of Animal Origin Food, Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Myrina, Greece; (I.G.K.); (I.P.); (C.N.)
| | - Haralabos Christos Karantonis
- Laboratory of Food Chemistry and of Technology and Quality of Animal Origin Food, Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Myrina, Greece; (I.G.K.); (I.P.); (C.N.)
| | - Efstathios Giaouris
- Laboratory of Food Microbiology and Hygiene, Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Myrina, Greece;
| | - Ioannis Panagiotakopoulos
- Laboratory of Food Chemistry and of Technology and Quality of Animal Origin Food, Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Myrina, Greece; (I.G.K.); (I.P.); (C.N.)
| | - Constantina Nasopoulou
- Laboratory of Food Chemistry and of Technology and Quality of Animal Origin Food, Department of Food Science and Nutrition, School of the Environment, University of the Aegean, 81400 Myrina, Greece; (I.G.K.); (I.P.); (C.N.)
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Lekmine S, Benslama O, Kadi K, Martín-García AI, Yilmaz MA, Akkal S, Boumegoura A, Alhomida AS, Ola MS, Ali A. LC/MS-MS Analysis of Phenolic Compounds in Hyoscyamus albus L. Extract: In Vitro Antidiabetic Activity, In Silico Molecular Docking, and In Vivo Investigation against STZ-Induced Diabetic Mice. Pharmaceuticals (Basel) 2023; 16:1015. [PMID: 37513927 PMCID: PMC10384095 DOI: 10.3390/ph16071015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/09/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
This study aimed to investigate the chemical composition and antidiabetic properties of cultivated Hyoscyamus albus L. The ethanol extract was analyzed using LC-MS/MS, and 18 distinct phenolic compounds were identified. Among these, p-coumaric acid (6656.8 ± 3.4 µg/g), gallic acid (6516 ± 1.7 µg/g), luteolin (6251.9 ± 1.3 µg/g), apigenin (6209.9 ± 1.1 µg/g), and rutin (5213.9 ± 1.3 µg/g) were identified as the most abundant polyphenolic molecules. In the in vitro antidiabetic experiment, the ability of the plant extract to inhibit α-glucosidase and α-amylase activities was examined. The results indicated that the extract from H. albus L. exhibited a higher inhibitory effect on α-amylase compared to α-glucosidase, with an IC50 of 146.63 ± 1.1 µg/mL and 270.43 ± 1.1 µg/mL, respectively. Docking simulations revealed that luteolin, fisetin, and rutin exhibited the most promising inhibitory activity against both enzymes, as indicated by their high contrasting inhibition scores. To further investigate the in vivo antidiabetic effects of H. albus L., an experiment was conducted using STZ-induced diabetic mice. The results demonstrated that the plant extract effectively reduced the levels of cholesterol and triglycerides. These findings suggest that H. albus L. may have therapeutic potential for managing hyperlipidemia, a common complication associated with diabetes. This highlights its potential as a natural remedy for diabetes and related conditions.
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Affiliation(s)
- Sabrina Lekmine
- Biotechnology, Water, Environment and Health Laboratory, Abbes Laghrour University, Khenchela 40000, Algeria
| | - Ouided Benslama
- Laboratory of Natural Substances, Biomolecules, and Biotechnological Applications, Department of Natural and Life Sciences, Larbi Ben M'Hidi University, Oum El Bouaghi 04000, Algeria
| | - Kenza Kadi
- Biotechnology, Water, Environment and Health Laboratory, Abbes Laghrour University, Khenchela 40000, Algeria
| | | | - Mustafa Abdullah Yilmaz
- Faculty of Pharmacy, Department of Analytical Chemistry, Dicle University, 21280 Diyarbakir, Türkiye
| | - Salah Akkal
- Valorization of Natural Resources, Bioactive Molecules and Biological Analysis Unit, Department of Chemistry, University of Mentouri Constantine 1, Constantine 25000, Algeria
| | - Ali Boumegoura
- Biotechnology Research Center (C.R.Bt), Ali Mendjeli, Nouvelle Ville, UV 03 BP, Constantine P.O. Box E73, Algeria
| | - Abdullah S Alhomida
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Mohammad Shamsul Ola
- Department of Biochemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Ahmad Ali
- Department of Life Sciences, University of Mumbai, Vidyanagari, Mumbai 400098, India
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Han Jeong G, Cho JH, Park KI, Kim K, Hoon Kim T. Enzymatic transformation of esculetin as a potent class of α-glucosidase inhibitors. Bioorg Med Chem Lett 2023; 88:129302. [PMID: 37088219 DOI: 10.1016/j.bmcl.2023.129302] [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: 03/14/2023] [Revised: 04/17/2023] [Accepted: 04/20/2023] [Indexed: 04/25/2023]
Abstract
A rapid and simple enzymatic transformation of the representative coumarin esculetin (1) with polyphenol oxidase originating from Agaricus bisporus afforded five new oxidized metabolites, esculetinins A (2), B (3), C (4), D (5), and E (6), together with the known compound isoeuphorbetin (7). The structures of the oligomerized transformation products were established on the basis of spectroscopic interpretations. The esculetin oligomers 2 and 3 revealed highly enhanced inhibitory activities against α-glucosidase, with IC50 values of 0.7 ± 0.1 and 2.3 ± 0.3μM, respectively, as compared to the original esculetin. Kinetic analysis also exhibited that the two new potent metabolites 2 and 3 have competitive modes of action.
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Affiliation(s)
- Gyeong Han Jeong
- Research Division for Biotechnology, Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), Jeongeup 56212, Republic of Korea
| | - Jae-Hyeon Cho
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Kwang-Il Park
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Kyungho Kim
- Korean Medicine Application Center, Korea Institute of Oriental Medicine, Daegu 41062, Republic of Korea
| | - Tae Hoon Kim
- Department of Food Science and Biotechnology, Daegu University, Gyeongsan 38453, Republic of Korea.
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Antihyperglycemic Effects of Annona cherimola Miller and the Flavonoid Rutin in Combination with Oral Antidiabetic Drugs on Streptozocin-Induced Diabetic Mice. Pharmaceuticals (Basel) 2023; 16:ph16010112. [PMID: 36678609 PMCID: PMC9865614 DOI: 10.3390/ph16010112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/02/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
Ethanolic extract obtained from Annona cherimola Miller (EEAc) and the flavonoid rutin (Rut) were evaluated in this study to determine their antihyperglycemic content, % HbA1c reduction, and antihyperlipidemic activities. Both treatments were evaluated separately and in combination with the oral antidiabetic drugs (OADs) acarbose (Aca), metformin (Met), glibenclamide (Gli), and canagliflozin (Cana) in acute and subchronic assays. The evaluation of the acute assay showed that EEAc and Rut administered separately significantly reduce hyperglycemia in a manner similar to OADs and help to reduce % HbA1c and hyperlipidemia in the subchronic assay. The combination of EEAc + Met showed the best activity by reducing the hyperglycemia content, % HbA1c, Chol, HDL-c, and LDL-c. Rutin in combination with OADs used in all treatments significantly reduced the hyperglycemia content that is reflected in the reduction in % HbA1c. In relation to the lipid profiles, all combinate treatments helped to avoid an increase in the measured parameters. The results show the importance of evaluating the activity of herbal remedies in combination with drugs to determine their activities and possible side effects. Moreover, the combination of rutin with antidiabetic drugs presented considerable activity, and this is the first step for the development of novel DM treatments.
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Gutiérrez-Grijalva EP, Leyva-López N, Vazquez-Olivo G, Heredia JB. Oregano as a potential source of antidiabetic agents. J Food Biochem 2022; 46:e14388. [PMID: 36098212 DOI: 10.1111/jfbc.14388] [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: 07/21/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 01/13/2023]
Abstract
Oregano is the name given to a great variety of herbs belonging mainly to the Lamiaceae and Verbenaceae botanical families. Oregano species are rich sources of phytochemicals such as phenolic compounds like rosmarinic acid, salvianolic acid, and luteolin, among others. A few articles have previously accessed some potential pharmacological bioactivities of oregano plants; however, none has focused on the antidiabetic studies. This review aims to summarize recent studies about the potential effect of phenolic compounds from oregano plant species. The reports were retrieved from electronic databases such as PubMed, Web of Science, National Center for Biotechnology Information (NCBI), and Scopus. In addition, articles related to the mentioned topics and published between 2004-2022 were selected. The results from this study show that the antidiabetic pharmacological reports of oregano phenolic compounds are mainly in vitro reports. Therefore, the diversity of oregano species yields a broad variety of phenolic constituents, where preclinical and clinical studies are strongly recommended.
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Affiliation(s)
| | - Nayely Leyva-López
- Centro de Investigación en Alimentación y Desarrollo, AC, Culiacán, Sinaloa, Mexico
| | | | - J Basilio Heredia
- Centro de Investigación en Alimentación y Desarrollo, AC, Culiacán, Sinaloa, Mexico
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Liu J, Zhang R, Nie K, Liu C, Deng L, Wang F. Construction of fatty acid derivatives from rubber seed oil as α-glucosidase inhibitors based on rubber seed oil. BIORESOUR BIOPROCESS 2022; 9:23. [PMID: 38647818 PMCID: PMC10992144 DOI: 10.1186/s40643-022-00492-9] [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: 11/29/2021] [Accepted: 01/01/2022] [Indexed: 11/10/2022] Open
Abstract
Natural free fatty acids show inhibitory effects on α-glucosidase and can hence have potential applications in diabetes treatment. This study indicated that the inhibitory effect of fatty acids showed a significant negative correlation with affinity energy (- 0.87) and melting point (- 0.88). Guided by this relationship, two promotion strategies of hydration and esterification were put forward to increase the inhibitory effect of fatty acids on α-glucosidase. The hydration can import an extra hydroxy group into the C=C bond of fatty acids, that will enhance the interaction with α-glucosidase, while the esterification will lower the melting point of fatty acids, and promote the inhibitory effect. Hydroxy fatty acids and fatty acid isopropyl esters possessed higher inhibitory effects than the natural fatty acids. Then, rubber seed oil was modified into novel fatty acid derivatives with higher inhibitory effect on α-glucosidase. The inhibitory IC50 of hydroxy products and isopropanol esters was 0.42 ± 0.01 μM and 0.57 ± 0.01 μM, respectively. The result reveals a feasible route to construct fatty acid derivatives from natural oil with α-glucosidase inhibitory effect.
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Affiliation(s)
- Jiahao Liu
- Beijing Bioprocess Key Laboratory and State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology (BUCT), Beijing, 100029, People's Republic of China
| | - Renwei Zhang
- Beijing Bioprocess Key Laboratory and State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology (BUCT), Beijing, 100029, People's Republic of China
| | - Kaili Nie
- Beijing Bioprocess Key Laboratory and State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology (BUCT), Beijing, 100029, People's Republic of China
| | - Changsheng Liu
- Beijing Bioprocess Key Laboratory and State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology (BUCT), Beijing, 100029, People's Republic of China.
- Sinovac Biotech Ltd, Beijing, China.
| | - Li Deng
- Beijing Bioprocess Key Laboratory and State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology (BUCT), Beijing, 100029, People's Republic of China.
| | - Fang Wang
- Beijing Bioprocess Key Laboratory and State Key Laboratory of Chemical Resource Engineering, College of Life Science and Technology, Beijing University of Chemical Technology (BUCT), Beijing, 100029, People's Republic of China
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Yue Q, Wang Z, Yu F, Tang X, Su L, Zhang S, Sun X, Li K, Zhao C, Zhao L. Changes in metabolite profiles and antioxidant and hypoglycemic activities of Laminaria japonica after fermentation. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Huang D, Du Z, Chen Y, Dong Z, Wang X, Li M, Zhang F, Chen W, Sun L. Bio-Guided Isolation of Two New Hypoglycemic Triterpenoid Saponins from Polygonum capitatum. Drug Des Devel Ther 2021; 15:5001-5010. [PMID: 34949913 PMCID: PMC8689516 DOI: 10.2147/dddt.s341354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 11/25/2021] [Indexed: 12/20/2022] Open
Abstract
Purpose Diabetes is a common disease caused by a combination of genetic and environmental factors, which was the top three diseases threatening human health. Therefore, it is necessary to seek more efficient hypoglycemic drugs. The main objective of this study was to investigate the potential hypoglycemic effects of compounds from Polygonum capitatum. Materials and Methods Our experiments were divided into three steps: (1) α-amylase test and oral starch tolerance test (OSTT) for screening the biological extract part of P. capitatum; (2) chemical isolation and identification using various separation techniques, and spectrum methods; and (3) evaluation of α-amylase inhibitory activity of isolates and in silico analysis for mechanism investigation. Results The n-butanol fractioned part of P. capitatum was confirmed to be the biological part according to α-amylase test. Then, two new triterpenoid saponins were isolated from the n-butanol part, which were also the first isolated triterpenoid saponins from P. capitatum. The activities of compounds 1 and 2 against α-amylase were 51.9±2.8% and 38.1±2.2%, respectively, which was consistent with the molecular docking analysis. In which, 1 and 2 showed the binding affinity energy for α-amylase was −9.4 kcal/mol and −7.8 kcal/mol, respectively. Conclusion Two new triterpenoid saponins were firstly isolated from P. capitatum, and displays potency as a hypoglycemic agent through blocking α-amylase.
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Affiliation(s)
- Doudou Huang
- Department of TCM Processing, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.,Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Zenan Du
- Department of TCM Processing, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.,Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Yanhong Chen
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai, People's Republic of China
| | - Zhiying Dong
- Department of TCM Processing, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Xiujuan Wang
- Department of TCM Processing, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Mengshuang Li
- Department of TCM Processing, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
| | - Feng Zhang
- Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai, People's Republic of China
| | - Wansheng Chen
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China.,Department of Pharmacy, Changzheng Hospital, Second Military Medical University, Shanghai, People's Republic of China
| | - Lianna Sun
- Department of TCM Processing, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
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Riyaphan J, Pham DC, Leong MK, Weng CF. In Silico Approaches to Identify Polyphenol Compounds as α-Glucosidase and α-Amylase Inhibitors against Type-II Diabetes. Biomolecules 2021; 11:1877. [PMID: 34944521 PMCID: PMC8699780 DOI: 10.3390/biom11121877] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 01/01/2023] Open
Abstract
Type-II diabetes mellitus (T2DM) results from a combination of genetic and lifestyle factors, and the prevalence of T2DM is increasing worldwide. Clinically, both α-glucosidase and α-amylase enzymes inhibitors can suppress peaks of postprandial glucose with surplus adverse effects, leading to efforts devoted to urgently seeking new anti-diabetes drugs from natural sources for delayed starch digestion. This review attempts to explore 10 families e.g., Bignoniaceae, Ericaceae, Dryopteridaceae, Campanulaceae, Geraniaceae, Euphorbiaceae, Rubiaceae, Acanthaceae, Rutaceae, and Moraceae as medicinal plants, and folk and herb medicines for lowering blood glucose level, or alternative anti-diabetic natural products. Many natural products have been studied in silico, in vitro, and in vivo assays to restrain hyperglycemia. In addition, natural products, and particularly polyphenols, possess diverse structures for exploring them as inhibitors of α-glucosidase and α-amylase. Interestingly, an in silico discovery approach using natural compounds via virtual screening could directly target α-glucosidase and α-amylase enzymes through Monte Carto molecular modeling. Autodock, MOE-Dock, Biovia Discovery Studio, PyMOL, and Accelrys have been used to discover new candidates as inhibitors or activators. While docking score, binding energy (Kcal/mol), the number of hydrogen bonds, or interactions with critical amino acid residues have been taken into concerning the reliability of software for validation of enzymatic analysis, in vitro cell assay and in vivo animal tests are required to obtain leads, hits, and candidates in drug discovery and development.
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Affiliation(s)
| | - Dinh-Chuong Pham
- Biomaterials and Nanotechnology Research Group, Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam;
| | - Max K. Leong
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan
| | - Ching-Feng Weng
- Functional Physiology Section, Department of Basic Medical Science, Xiamen Medical College, Xiamen 361023, China
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Floris S, Fais A, Medda R, Pintus F, Piras A, Kumar A, Kuś PM, Westermark GT, Era B. Washingtonia filifera seed extracts inhibit the islet amyloid polypeptide fibrils formations and α-amylase and α-glucosidase activity. J Enzyme Inhib Med Chem 2021; 36:517-524. [PMID: 33494628 PMCID: PMC7850368 DOI: 10.1080/14756366.2021.1874945] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 12/27/2020] [Accepted: 01/07/2021] [Indexed: 01/13/2023] Open
Abstract
Washingtonia filifera seeds have revealed to possess antioxidant properties, butyrylcholinesterase and xanthine oxidase inhibition activities. The literature has indicated a relationship between Alzheimer's disease (AD) and type-2 diabetes (T2D). Keeping this in mind, we have now evaluated the inhibitory properties of W. filifera seed extracts on α-amylase, α-glucosidase enzyme activity and the Islet Amyloid Polypeptide (IAPP) fibrils formation. Three extracts from seeds of W. filifera were evaluated for their enzyme inhibitory effect and IC50 values were calculated for all the extracts. The inhibition mode was investigated by Lineweaver-Burk plot analysis and the inhibition of IAPP aggregate formation was monitored. W. filifera methanol seed extract appears as the most potent inhibitor of α-amylase, α-glucosidase, and for the IAPP fibril formation. Current findings indicate new potential of this extract that could be used for the identification or development of novel potential agents for T2D and AD.
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Affiliation(s)
- Sonia Floris
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | - Antonella Fais
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | - Rosaria Medda
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | - Francesca Pintus
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
| | - Alessandra Piras
- Department of Chemical and Geological Sciences, University of Cagliari, Cagliari, Italy
| | - Amit Kumar
- Department of Electrical and Electronic Engineering, University of Cagliari, Cagliari, Italy
| | - Piotr Marek Kuś
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, Wrocław, Poland
| | | | - Benedetta Era
- Department of Life and Environmental Sciences, University of Cagliari, Cagliari, Italy
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Design, synthesis and SAR of novel sulfonylurea derivatives for the treatment of Diabetes mellitus in rats. Med Chem Res 2021. [DOI: 10.1007/s00044-021-02829-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Han B, Sun H, Yang X, Wang T, He C, Zhao K, An S, Guo C, Niu D, Xue X, Kang J. Ultrasound-assisted enzymatic extraction of Corni Fructus alpha-glucosidase inhibitors improves insulin resistance in HepG2 cells. Food Funct 2021; 12:9808-9819. [PMID: 34664576 DOI: 10.1039/d1fo01002f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Corni Fructus (CF) is a traditional medicine and beneficial food with multifaceted protective effects against diabetes and its complications. Since alpha-glucosidase inhibitors (GIs) are promising first-choice oral antihyperglycemic drugs for diabetes, we examined whether GIs from CF (GICF) are useful for diabetes treatment. Therefore, GICF was extracted by ultrasound-assisted enzymatic extraction (UAEE) that is optimized by a three-level, four-factor Box-Behnken design and determined by ultra-performance liquid chromatography. Compared to 36.31 mg g-1 without enzyme treatment, the GICF yield increased to 70.44 mg g-1via UAEE under optimum conditions (0.5% compound enzyme extracted in 23 min at 46 °C and pH 4.8). The activity (91.99%) of GICF was as predicted (93.28%). When GICF was used in an insulin-resistant HepG2 cell model, it significantly ameliorated the glucose metabolism in a dose-dependent manner. Our findings indicate that UAEE may be an innovative method for functional food extraction and a potential strategy for high-quality food ingredient (such as GI) production with high efficiency and productivity.
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Affiliation(s)
- Binkai Han
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Haoqiang Sun
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Xiaolin Yang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Ting Wang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Changfen He
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Ke Zhao
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Shujing An
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Chen Guo
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Dou Niu
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Xiaochang Xue
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
| | - Jiefang Kang
- National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, The Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, The Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi 710119, The People's Republic of China.
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Discovery of α-Glucosidase Inhibitors from Marine Microorganisms: Optimization of Culture Conditions and Medium Composition. Mol Biotechnol 2021; 63:1004-1015. [PMID: 34185249 DOI: 10.1007/s12033-021-00362-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Accepted: 06/20/2021] [Indexed: 10/21/2022]
Abstract
Various studies showed that the suppression of α-glucosidase activity can impede the glucose absorption in our body, and therefore, it can be used to treat type 2 diabetes. Hence, the compounds with anti-α-glucosidase have gained considerable attention because of their potential application in diabetes treatment. In previous literature studies, these anti-α-glucosidase compounds were extracted from plants and fungus. Less studies are being conducted to identify the anti-α-glucosidase compounds in the microbial community. In this study, 23 marine bacterial strains were screened for their potential to suppress the α-glucosidase activity. The highest inhibitory activity was exhibited by isolated L06 which was identified as Oceanimonas smirnovii EBL6. The cultivation conditions, such as temperature and pH, were optimized to increase the production of α-glucosidase inhibitors by Oceanimonas smirnovii EBL6 strain. The result findings showed that the highest yield of α-glucosidase inhibitors can be obtained at the culture time of 120 h, fermentation temperature of 30 °C, and pH 4.6. Under these conditions, the inhibitory activity of α-glucosidase can reach 81%. The IC50 of n-butanol extract was 13.89 μg/ml, while standard acarbose was 31.16 μg/ml. Overall, these findings suggest that Oceanimonas smirnovii produces α-glucosidase inhibitors and could been applied in the biochemical and medicinal fields in the future.
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Synthesis of novel 5-(2,5-bis(2,2,2-trifluoroethoxy)phenyl)-1,3,4-oxadiazole-2-thiol derivatives as potential glucosidase inhibitors. Bioorg Chem 2021; 114:105046. [PMID: 34126575 DOI: 10.1016/j.bioorg.2021.105046] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND A hybrid molecule of different biologically active substances can improve affinity and efficiency compared to a standard drug. Hence based on this fact, we predict that a combination of fluorine, oxadiazole, sulfur, etc., may enhance α-glucosidase inhibition activity compared to a standard drug. METHODS A series of novel 5-(2,5-bis(2,2,2-trifluoroethoxy)phenyl)-1,3,4-oxadiazole-2-thiol derivatives (2a-2i) were synthesized and characterized using spectroscopic techniques such as 1HNMR and LC-MS. In order to evaluate its bioactivity, in vitro α-amylase and α-glycosidase inhibitory activity were performed. In vivo study was carried using a genetic model, Drosophila melanogaster, for assessing the antihyperglycemic effects. RESULTS The compounds 2a-2i demonstrated α-amylase inhibitory activity in the range of IC50 = 40.00-80.00 μg/ml as compare to standard acarbose (IC50 = 34.71 μg/ml). Compounds 2a-2i demonstrated α-glucosidase inhibitory activity in the range of IC50 = 46.01-81.65 μg/ml as compared to standard acarbose (IC50 = 34.72 μg/ml). Docking studies on a target protein, N-terminal subunit of human Maltase-glucoamylase (PDB:2QMJ) was carried and the compounds were found to dock into the active site of the enzyme (Fig. 1). The predicted binding energies of the compounds were calculated. The in vitro studies indicate that compounds 2b and 2g had better activity among the synthesized compounds. Whereas in vivo study indicates that 2b, 2g, and 2i could lower glucose levels in the Drosophila, but then 17-30% reduced capacity than acarbose and may be overcome by adjusting their dosage. CONCLUSIONS The in vitro and in vivo studies indicate that compounds 2b and 2g had better activity among the synthesized compounds. This study has recognized that compounds like 2b, 2g, and 2i may be considered potential candidates for further developing a novel class of antidiabetic agents.
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Jaradat N, Hawash M, Dass G. Phytochemical analysis, in-vitro anti-proliferative, anti-oxidant, anti-diabetic, and anti-obesity activities of Rumex rothschildianus Aarons. extracts. BMC Complement Med Ther 2021; 21:107. [PMID: 33789649 PMCID: PMC8011103 DOI: 10.1186/s12906-021-03282-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/18/2021] [Indexed: 02/07/2023] Open
Abstract
Background Rumex rothschildianus is the sole member of a unique section of the genus Rumex, in the family Polygonaceae. This species is a very rare small dioecious annual, endemic to Palestine that is traditionally used as food and for the treatment of various diseases. Therefore, the current investigation aimed to screen the chemical constituents, antioxidants, anti-α-amylase, anti-α-glucosidase, antilipase, and cytotoxic effects of four solvents fractions of R. rothschildianus leaves. Methods Dried powder of R. rothschildianus leaves was extracted in four solvents with different polarities. Several qualitative and quantitative phytochemical tests were performed to determine the components of the extracts. The colorimetric analysis was used for the quantitative determination of phenols, flavonoids, and tannins. In-vitro assays were performed to evaluate the extracts for antioxidant, anti-α-amylase, anti-α-glucosidase, and antilipase inhibitory activities, as well as cytotoxicity by MTS assay against cervical carcinoma cells line (HeLa) and breast cancer cell line (MCF7). Results The acetone fraction of R. rothschildianus leaves showed the most significant antioxidant activity, due to having the highest content of flavonoids and phenolics, with an IC50 value of 6.3 ± 0.4 μg/ml, compared to 3.1 ± 0.9 μg/ml for Trolox, and regarding lipase inhibition activity the acetone fraction showed the most potent activity with an IC50 value of 26.3 ± 0.6 μg/ml, in comparison with orlistat positive control IC50 12.3 μg/ml. The same extract was the most potent inhibitor of α-amylase and α-glucosidase, with IC50 values of 19.1 ± 0.7 μg/ml and 54.9 ± 0.3 μg/ml, respectively, compared to 28.8, 37.1 ± 0.3 μg/ml of acarbose, respectively. The hexane fraction showed 99.9% inhibition of HeLa cells and 97.4% inhibition for MCF7 cells. Conclusion The acetone fraction of R. rothschildianus leaves might provide a source of bioactive compounds for the treatment of oxidative stress. Similarly, the hexane fraction indicates the promising antitumor potential of R. rothschildianus. Clearly, these initial indications need further purification of potentially active compounds, and ultimately, in-vivo studies to determine their effectiveness.
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Affiliation(s)
- Nidal Jaradat
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, 00970, Palestine.
| | - Mohammed Hawash
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, 00970, Palestine.
| | - Gada Dass
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, 00970, Palestine
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Antihyperglycemic and Lipid Profile Effects of Salvia amarissima Ortega on Streptozocin-Induced Type 2 Diabetic Mice. Molecules 2021; 26:molecules26040947. [PMID: 33670091 PMCID: PMC7916882 DOI: 10.3390/molecules26040947] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 02/02/2021] [Accepted: 02/07/2021] [Indexed: 12/13/2022] Open
Abstract
Salvia amarissima Ortega was evaluated to determinate its antihyperglycemic and lipid profile properties. Petroleum ether extract of fresh aerial parts of S. amarissima (PEfAPSa) and a secondary fraction (F6Sa) were evaluated to determine their antihyperglycemic activity in streptozo-cin-induced diabetic (STID) mice, in oral tolerance tests of sucrose, starch, and glucose (OSTT, OStTT, and OGTT, respectively), in terms of glycated hemoglobin (HbA1c), triglycerides (TG), and high-density lipoprotein (HDL). In acute assays at doses of 50 mg/kg body weight (b.w.), PEfAPSa and F6Sa showed a reduction in hyperglycemia in STID mice, at the first and fifth hour after of treatment, respectively, and were comparable with acarbose. In the sub-chronic test, PEfAPSa and F6Sa showed a reduction of glycemia since the first week, and the effect was greater than that of the acarbose control group. In relation to HbA1c, the treatments prevented the increase in HbA1c. In the case of TG and HDL, PEfAPSa and F6Sa showed a reduction in TG and an HDL increase from the second week. OSTT and OStTT showed that PEfAPSa and F6Sa significantly lowered the postprandial peak at 1 h after loading but only in sucrose or starch such as acarbose. The results suggest that S. amarissima activity may be mediated by the inhibition of disaccharide hydrolysis, which may be associated with an α-glucosidase inhibitory effect.
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Quan YS, Zhang XY, Yin XM, Wang SH, Jin LL. Potential α-glucosidase inhibitor from Hylotelephium erythrostictum. Bioorg Med Chem Lett 2020; 30:127665. [DOI: 10.1016/j.bmcl.2020.127665] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/22/2020] [Accepted: 10/28/2020] [Indexed: 01/05/2023]
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Das G, Kim DY, Fan C, Gutiérrez-Grijalva EP, Heredia JB, Nissapatorn V, Mitsuwan W, Pereira ML, Nawaz M, Siyadatpanah A, Norouzi R, Sawicka B, Shin HS, Patra JK. Plants of the Genus Terminalia: An Insight on Its Biological Potentials, Pre-Clinical and Clinical Studies. Front Pharmacol 2020; 11:561248. [PMID: 33132909 PMCID: PMC7578430 DOI: 10.3389/fphar.2020.561248] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 09/07/2020] [Indexed: 12/16/2022] Open
Abstract
The evaluation and confirmation of healing properties of several plant species of genus Terminalia based on their traditional uses and the clinical claims are of utmost importance. Genus Terminalia has received more attention to assess and validate the therapeutic potential and clinical approval due to its immense folk medicinal and traditional applications. Various species of Terminalia genus are used in the form of herbal medicine and formulations, in treatment of diseases, including headache, fever, pneumonia, flu, geriatric, cancer, to improve memory, abdominal and back pain, cough and cold, conjunctivitis, diarrhea, heart disorder, leprosy, sexually transmitted diseases, and urinary tract disorders. These are reported to possess numerous biological properties, counting: antibacterial, antifungal, antiinflammatory, antiviral, antiretroviral, antioxidant, and antipa7rasitic. This current research review aims to update the detailed biological activities, pre-clinical and clinical studies of various extracts and secondary metabolites from several plant species under the genus Terminalia, along with information on the traditional uses and chemical composition to develop a promising strategy for their potential applications in the form of medicine or use in modern drug formulations for treating diseases like pneumonia, flu, and other types of viral infections or controlling human contagions.
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Affiliation(s)
- Gitishree Das
- Research Institute of Biotechnology & Medical Converged Science, Dongguk University-Seoul, Goyangsi, South Korea
| | - Do-Yeong Kim
- Research Institute of Biotechnology & Medical Converged Science, Dongguk University-Seoul, Goyangsi, South Korea
| | - Chen Fan
- Skin Research Institute of Singapore, Agency for Science, Technology and Research, A∗STAR, Singapore, Singapore
| | - Erick P. Gutiérrez-Grijalva
- Laboratorio de Alimentos Funcionales y Nutracéuticos, Cátedras CONACYT–Centro de Investigación en Alimentación y Desarrollo, Culiacán, México
| | - J. Basilio Heredia
- Laboratorio de Alimentos Funcionales y Nutracéuticos, Centro de Investigación en Alimentación y Desarrollo, Culiacán, México
| | - Veeranoot Nissapatorn
- School of Allied Health Sciences, Research Excellence Center for Innovation and Health Products (RECIHP) and World Union for Herbal Drugs Discovery (WUHeDD), Walailak University, Nakhon Si Thammarat, Thailand
| | - Watcharapong Mitsuwan
- School of Allied Health Sciences, Research Excellence Center for Innovation and Health Products (RECIHP) and World Union for Herbal Drugs Discovery (WUHeDD), Walailak University, Nakhon Si Thammarat, Thailand
| | - Maria Lourdes Pereira
- CICECO-Aveiro Institute of Materials and Department of Medical Sciences, University of Aveiro, Aveiro, Portugal
| | - Muhammad Nawaz
- Department of Nano-Medicine Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Abolghasem Siyadatpanah
- Ferdows School of Paramedical and Health, Birjand University of Medical Sciences, Birjand, Iran
| | - Roghayeh Norouzi
- Department of Pathobiology, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Barbara Sawicka
- Faculty of Agrobioengineering, Department of Plant Production Technology and Commodities Science, University of Life Sciences in Lublin, Lublin, Poland
| | - Han-Seung Shin
- Department of Food Science & Biotechnology, Dongguk University-Seoul, Goyangsi, South Korea
| | - Jayanta Kumar Patra
- Research Institute of Biotechnology & Medical Converged Science, Dongguk University-Seoul, Goyangsi, South Korea
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Molecules Isolated from Mexican Hypoglycemic Plants: A Review. Molecules 2020; 25:molecules25184145. [PMID: 32927754 PMCID: PMC7571036 DOI: 10.3390/molecules25184145] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/17/2020] [Accepted: 09/03/2020] [Indexed: 12/15/2022] Open
Abstract
Like in many developing countries, in Mexico, the use of medicinal plants is a common practice. Based on our own field experience, there are at least 800 plants used for treating diabetes nowadays. Thus, their investigation is essential. In this context, this work aims to provide a comprehensive and critical review of the molecules isolated from Mexican hypoglycemic plants, including their source and target tested. In the last few years, some researchers have focused on the study of Mexican hypoglycemic plants. Most works describe the hypoglycemic effect or the mechanism of action of the whole extract, as well as the phytochemical profile of the tested extract. Herein, we analyzed 85 studies encompassing 40 hypoglycemic plants and 86 active compounds belonging to different classes of natural products: 28 flavonoids, 25 aromatic compounds, other than flavonoids, four steroids, 23 terpenoids, 4 oligosaccharides, and 1 polyalcohol. These compounds have shown to inhibit α-glucosidases, increase insulin secretion levels, increase insulin sensitivity, and block hepatic glucose output. Almost half of these molecules are not common metabolites, with a narrow taxonomic distribution, which makes them more interesting as lead molecules. Altogether, this analysis provides a necessary inventory useful for future testing of these active molecules against different hypoglycemic targets, to get a better insight into the already described mechanisms, and overall, to contribute to the knowledge of Mexican medicinal plants.
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Valdes M, Calzada F, Mendieta-Wejebe J. Structure-Activity Relationship Study of Acyclic Terpenes in Blood Glucose Levels: Potential α-Glucosidase and Sodium Glucose Cotransporter (SGLT-1) Inhibitors. Molecules 2019; 24:E4020. [PMID: 31698833 PMCID: PMC6891574 DOI: 10.3390/molecules24224020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/24/2019] [Accepted: 11/04/2019] [Indexed: 02/06/2023] Open
Abstract
Twelve terpenoids were evaluated in the treatment of type 2 diabetes mellitus: seven monoterpenes (geranyl acetate (1), geranic acid (2), citral (3), geraniol (4), methyl geranate (5), nerol (6), and citronellic acid (7)), three sesquiterpenes (farnesal (8), farnesol (9), and farnesyl acetate (10)), one diterpene (geranylgeraniol (11)), and one triterpene (squalene (12)) were selected to carry out a study on normoglycemic and streptozotocin-induced diabetic mice. Among these, 2, 3, 7, 8, 9, and 10 showed antihyperglycemic activity in streptozotocin-induced diabetic mice. They were then selected for evaluation in oral sucrose and lactose tolerance tests (OSTT and OLTT) as well as in an oral glucose tolerance test (OGTT). In the OSTT and OLTT, compounds 3, 7, 8, 9, and 10 showed a reduction in postprandial glucose peaks 2 h after a sucrose or lactose load (comparable to acarbose). In the case of the OGTT, 2, 7, 8, 9, and 10 showed a reduction in postprandial glucose peaks 2 h after a glucose load (comparable to canagliflozin). Our results suggest that the control of postprandial hyperglycemia may be mediated by the inhibition of disaccharide digestion, such as sucrose and lactose, and the regulation of the absorption of glucose. The first case could be associated with an ∝ -glucosidase inhibitory effect and the second with an inhibition of the sodium-glucose type 1 (SGLT-1) cotransporter. Finally, five acyclic terpenes may be candidates for the development and search for new α-glucosidase and SGLT-1 cotransporter inhibitors.
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Affiliation(s)
- Miguel Valdes
- Instituto Politécnico Nacional, Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Plan de San Luis y Salvador Díaz Mirón S/N, Col. Casco de Santo Tomás, Ciudad de México CP 11340, CDMX, Mexico
- UMAE Hospital de Especialidades 2º Piso CORSE Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Av. Cuauhtemoc 330, Col. Doctores, Ciudad de México CP 06720, CDMX, Mexico
| | - Fernando Calzada
- UMAE Hospital de Especialidades 2º Piso CORSE Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Av. Cuauhtemoc 330, Col. Doctores, Ciudad de México CP 06720, CDMX, Mexico
| | - Jessica Mendieta-Wejebe
- Instituto Politécnico Nacional, Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Plan de San Luis y Salvador Díaz Mirón S/N, Col. Casco de Santo Tomás, Ciudad de México CP 11340, CDMX, Mexico
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Ansari S, Bari A, Ullah R, Mathanmohun M, Veeraraghavan VP, Sun Z. Gold nanoparticles synthesized with Smilax glabra rhizome modulates the anti-obesity parameters in high-fat diet and streptozotocin induced obese diabetes rat model. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 201:111643. [PMID: 31698218 DOI: 10.1016/j.jphotobiol.2019.111643] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 09/27/2019] [Accepted: 10/03/2019] [Indexed: 01/17/2023]
Abstract
Diabetes is a major emerging health consequence across the world which directly associated with the obesity. Contemporary anti-diabetic drugs have numeral limitations, and investigation of herbal remedies for diabetes give novel guide for the expansion of new drugs that can be used as harmonizing to present anti-diabetic allopathic medications. Gold nanoparticles (AuNPs) of 21 nm have been formerly well portrayed in vitro for their capability to intend active uptake in cell. Our present study was dealing with the synthesis of gold nanoparticles by means of Smilax glabra rhizome amend the anti-obesity constraints in high-fat diet by streptozotocin provoked obese diabetes in rat model. Characterization studies like UV -Spectroscopy, XRD analysis, SEM, TEM microscopy, Energy Dispersive X-Ray Spectroscopy, and FT-IR investigation confirms the availability of dimension, shape and size. Biochemical parameters like blood glucose and insulin sufferance and its release, lipid profile, aterogenic & coronary index, liver markers, inflammatory markers, hormones like leptin, resistin, adiponectin indicates the therapeutic effect of gold nanoparticles harvested from Smilax glabra on obese and diabetic rats. Histopathological examinations displayed the disturbed internal structures of obese and diabetic rats liver and heart tissues. Whereas, treatment with gold nanoparticles synthesized from Smilax glabra restored the internal membrane, nuclei and cytoplasm. All these findings confirmed the anti-obesity and anti-diabetic effect of synthesized gold nanoparticles from Smilax glabra.
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Affiliation(s)
- SiddiqueAkber Ansari
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O.Box: 2457, Riyadh 11451, Saudi Arabia
| | - Ahmed Bari
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, P.O.Box: 2457, Riyadh 11451, Saudi Arabia; Research Center, College of Pharmacy, King Saud University, P.O. Box: 2457, Riyadh 11451, Saudi Arabia
| | - Riaz Ullah
- Medicinal, Aromatic and Poisonous Plants Research Center (MAPRC), College of Pharmacy, King Saud University, PO box 2457, Riyadh 11451, Saudi Arabia
| | - Maghimaa Mathanmohun
- Department of Microbiology, Muthayammal College of Arts & Science, Rasipuram, Namakkal, Tamilnadu, India
| | - Vishnu Priya Veeraraghavan
- Department of Biochemistry, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600 077, India
| | - Zhongwei Sun
- Department of Gastrointestinal Surgery, Jinan Central Hospital Affiliated to Shandong University, No.105, Jiefang road, Lixia District, Jinan, Shandong Province 250013, PR China.
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Sheikh Y, Chanu MB, Mondal G, Manna P, Chattoraj A, Chandra Deka D, Chandra Talukdar N, Chandra Borah J. Procyanidin A2, an anti-diabetic condensed tannin extracted from Wendlandia glabrata, reduces elevated G-6-Pase and mRNA levels in diabetic mice and increases glucose uptake in CC1 hepatocytes and C1C12 myoblast cells. RSC Adv 2019; 9:17211-17219. [PMID: 35519885 PMCID: PMC9064588 DOI: 10.1039/c9ra02397f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 05/14/2019] [Indexed: 12/26/2022] Open
Abstract
To reduce the global burden of diabetes in an affordable way great attention has been paid to the search for functional foods and herbal remedies. One of the most popularly used functional foods in the North Eastern region of India is tender shoots of Wendlandia glabrata DC. In the current study identification of active anti-diabetic constituent of the tender shoots of W. glabrata was guided through α-glucosidase inhibition and procyanidin A2 was identified with IC50 0.27 ± 0.01 μg mL−1 making it potential source for postprandial management of DM type 2. The study has also demonstrated procyanidin A2 as a potent anti-diabetic agent that exhibits significant glucose-6-phosphatase inhibitory activities and downregulated mRNA level in diabetic mice as well as increases glucose uptake in hepatocytes and myoblast cells. This study revealed that easily available tender shoots of W. glabrata could be used to make specific dietary recommendations for consumption for affordable management of diabetes. Wendlandia glabrata and procyanidin A2 isolated thereof are exhibited significant anti-diabetic effect.![]()
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Affiliation(s)
- Yunush Sheikh
- Institute of Buioresources and Sustainable Development Imphal-795001 Manipur India
| | - Maibam Beebina Chanu
- Institute of Buioresources and Sustainable Development Imphal-795001 Manipur India
| | - Gopinath Mondal
- Institute of Buioresources and Sustainable Development Imphal-795001 Manipur India
| | - Prasenjit Manna
- CSIR-North East Institute of Science and Technology Jorhat-785006 Assam India
| | - Asamanja Chattoraj
- Institute of Buioresources and Sustainable Development Imphal-795001 Manipur India
| | | | - Narayan Chandra Talukdar
- Laboratory of Natural Medicinal Chemistry, Life Sciences Division, Institute of Advanced Study in Science & Technology Guwahati-781035 Assam India +91-361-2273063 +91-361-2273061
| | - Jagat Chandra Borah
- Laboratory of Natural Medicinal Chemistry, Life Sciences Division, Institute of Advanced Study in Science & Technology Guwahati-781035 Assam India +91-361-2273063 +91-361-2273061
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Arnason JT, Figueroa M, Pereda-Miranda R, Oberlies NH. Special Issue in Honor of Professor Rachel Mata. JOURNAL OF NATURAL PRODUCTS 2019; 82:423-424. [PMID: 30897908 DOI: 10.1021/acs.jnatprod.9b00067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- John T Arnason
- Department of Biology , University of Ottawa , Ottawa , Canada
| | - Mario Figueroa
- Facultad de Química , Universidad Nacional Autónoma de México , Ciudad de México , México
| | - Rogelio Pereda-Miranda
- Facultad de Química , Universidad Nacional Autónoma de México , Ciudad de México , México
| | - Nicholas H Oberlies
- University of North Carolina at Greensboro , Greensboro , North Carolina , United States
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Cardullo N, Catinella G, Floresta G, Muccilli V, Rosselli S, Rescifina A, Bruno M, Tringali C. Synthesis of Rosmarinic Acid Amides as Antioxidative and Hypoglycemic Agents. JOURNAL OF NATURAL PRODUCTS 2019; 82:573-582. [PMID: 30785286 DOI: 10.1021/acs.jnatprod.8b01002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is an important metabolic disorder for which there is an urgent need for new antidiabetic drugs. α-Glucosidase inhibition is an established protocol for T2DM therapy. Because hyperglycemia causes oxidative tissue damage, the development of agents with both α-glucosidase inhibition and antioxidant activity from natural or natural-derived polyphenols such derivatives of rosmarinic acid (RA) represents an attractive therapeutic option. We report a study on amides 1-10 derived from RA and their evaluation for yeast α-glucosidase inhibition and antioxidant activity (DPPH and ORAC tests). All amides showed higher inhibitory activity than that of RA, were by far more potent than the antidiabetic drug acarbose, and proved to be effective antioxidants. A molecular docking study displayed significant binding interactions of RA amides with the active site of α-glucosidase. This in silico optimization study led to the design and synthesis of amides 9 (IC50 = 42.3 μM) and 10 (IC50 = 35.2 μM), showing the most potent α-glucosidase inhibition and good antioxidative properties. A kinetic study showed that 10 acts as a mixed type inhibitor.
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Tang H, Ma F, Zhao D, Xue Z. Exploring the effect of salvianolic acid C on α-glucosidase: Inhibition kinetics, interaction mechanism and molecular modelling methods. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.01.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Mangostanaxanthone VIIII, a new xanthone from Garcinia mangostana pericarps, α-amylase inhibitory activity, and molecular docking studies. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2019. [DOI: 10.1016/j.bjp.2019.02.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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28
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Lim J, Kim DK, Shin H, Hamaker BR, Lee BH. Different inhibition properties of catechins on the individual subunits of mucosal α-glucosidases as measured by partially-purified rat intestinal extract. Food Funct 2019; 10:4407-4413. [DOI: 10.1039/c9fo00990f] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mucosal α-glucosidases from rat intestinal powder were employed, with a step to remove α-amylase, to measure the possibility of different inhibition of catechins, particularly those found in tea, on the four α-glucosidase enzymes.
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Affiliation(s)
- Jongbin Lim
- Whistler Center for Carbohydrate Research and Department of Food Science
- Purdue University
- USA
| | - Do Kyoung Kim
- Department of Food Science and Biotechnology
- College of BioNano Technology
- Gachon University
- Seongnam 13120
- South Korea
| | - Hansol Shin
- Department of Food Science and Biotechnology
- College of BioNano Technology
- Gachon University
- Seongnam 13120
- South Korea
| | - Bruce R. Hamaker
- Whistler Center for Carbohydrate Research and Department of Food Science
- Purdue University
- USA
| | - Byung-Hoo Lee
- Department of Food Science and Biotechnology
- College of BioNano Technology
- Gachon University
- Seongnam 13120
- South Korea
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29
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Mata R, Figueroa M, Navarrete A, Rivero-Cruz I. Chemistry and Biology of Selected Mexican Medicinal Plants. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2019; 108:1-142. [PMID: 30924013 DOI: 10.1007/978-3-030-01099-7_1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Herbal medicines are an integral element of alternative medical care in Mexico, and the best testimony to their efficacy and cultural value is their persistence in contemporary Mexican marketplaces where the highest percentages of medicinal and aromatic plants are sold. This chapter summarizes current trends in research on medicinal plants in Mexico, with emphasis on work carried out at the authors' laboratories. The most relevant phytochemical and pharmacological profiles of a selected group of plants used widely for treating major national health problems are described.From this contribution, it is evident that in the last five decades a significant amount of research on medicinal plants has been performed by Mexican scientists. Such efforts have led to the publication of many research papers in noted peer-reviewed journals and technical books. The isolation and structural characterization of hundreds of bioactive secondary metabolites have been accomplished, and most importantly, these studies have tended to support the ethnomedical uses of many different species. A multidisciplinary approach for investigating these plants has led to an increased emphasis on areas such as phytopharmacology, phytotoxicology, quality control, regulation, and conservation issues for these valuable resources. The medicinal plants analyzed so far have shown a very broad chemical diversity of their constituents, which have a high potential for exhibiting novel mechanistic effects biologically. The chapter shows also that there is need to conduct additional clinical studies on herbal drugs, in particular because the longstanding traditional evidence for their safety is not always sufficient to assure their rational use. There is also need to move to "omics" approaches for investigating the holistic effect and the influence of groups of phytochemicals on the whole organism. Mexican scientists may be expected to have bright prospects in this regard, which will imbue medicinal plant research with a new dynamism in the future.
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Affiliation(s)
- Rachel Mata
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México.
| | - Mario Figueroa
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México.
| | - Andrés Navarrete
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Isabel Rivero-Cruz
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México, México
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Comparative α-glucosidase and α-amylase inhibition studies of rhodanine–pyrazole conjugates and their simple rhodanine analogues. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2272-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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31
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Hu Y, Wang B, Yang J, Liu T, Sun J, Wang X. Synthesis and biological evaluation of 3-arylcoumarin derivatives as potential anti-diabetic agents. J Enzyme Inhib Med Chem 2018; 34:15-30. [PMID: 30362362 PMCID: PMC6211316 DOI: 10.1080/14756366.2018.1518958] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
A variety of substituted 3-arylcoumarin derivatives were synthesised through microwave radiation heating. The method has characteristics of environmental friendliness, economy, simple separation, and purification process, less by-products and high reaction yield. Those 3-arylcoumarin derivatives were screened for antioxidant, α-glucosidase inhibitory and advanced glycation end-products (AGEs) formation inhibitory. Most compounds exhibited significant antioxidant and AGEs formation inhibitory activities. Anti-diabetic activity studies showed that compounds 11 and 17 were equipotent to the standard drug glibenclamide in vivo. According to the experimental results, the target compound 35 can be used as a lead compound for the development of new anti-diabetic drugs. The whole experiment showed that anti-diabetic activity is prevalent in 3-arylcoumarins, which added a new natural skeleton to the development of anti-diabetic active drugs.
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Affiliation(s)
- Yuheng Hu
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , Shandong , China.,b Institute of MateriaMedica , Shandong Academy of Medical Sciences , Jinan , Shandong , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , Shandong , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , Shandong , China
| | - Bing Wang
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , Shandong , China.,b Institute of MateriaMedica , Shandong Academy of Medical Sciences , Jinan , Shandong , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , Shandong , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , Shandong , China
| | - Jie Yang
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , Shandong , China.,b Institute of MateriaMedica , Shandong Academy of Medical Sciences , Jinan , Shandong , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , Shandong , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , Shandong , China
| | - Teng Liu
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , Shandong , China.,b Institute of MateriaMedica , Shandong Academy of Medical Sciences , Jinan , Shandong , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , Shandong , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , Shandong , China
| | - Jie Sun
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , Shandong , China.,b Institute of MateriaMedica , Shandong Academy of Medical Sciences , Jinan , Shandong , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , Shandong , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , Shandong , China
| | - Xiaojing Wang
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , Shandong , China.,b Institute of MateriaMedica , Shandong Academy of Medical Sciences , Jinan , Shandong , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , Shandong , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , Shandong , China
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32
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Jang JH, Park JE, Han JS. Scopoletin inhibits α-glucosidase in vitro and alleviates postprandial hyperglycemia in mice with diabetes. Eur J Pharmacol 2018; 834:152-156. [PMID: 30031794 DOI: 10.1016/j.ejphar.2018.07.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 07/16/2018] [Accepted: 07/18/2018] [Indexed: 12/30/2022]
Abstract
The aim of this study was to investigate whether scopoletin could inhibit the activities of the carbohydrate digestive enzymes, α-glucosidase and α-amylase, and reduce postprandial hyperglycemia in streptozotocin (STZ)-induced diabetes in mice. Scopoletin showed a distinct inhibitory effect on α-glucosidase and α-amylase. The half maximal inhibitory concentration (IC50) of scopoletin was 85.12 and 37.36 μM for α-glucosidase and α-amylase, respectively, which were lower values than those for acarbose. The increase in postprandial blood glucose levels was significantly suppressed in the scopoletin group compared to the control group of STZ-induced diabetes in mice. Moreover, the area under the curve significantly decreased with the administration of scopoletin in STZ-induced diabetes in mice. These results showed that scopoletin might help to lower postprandial hyperglycemia through inhibition of carbohydrate digestive enzymes.
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Affiliation(s)
- June Hyuk Jang
- Department of Food Science and Nutrition, Pusan National University, Busan 46241, Republic of Korea
| | - Jae Eun Park
- Department of Food Science and Nutrition, Pusan National University, Busan 46241, Republic of Korea
| | - Ji Sook Han
- Department of Food Science and Nutrition, Pusan National University, Busan 46241, Republic of Korea.
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33
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Rebollar-Ramos D, Macías-Ruvalcaba ML, Figueroa M, Raja HA, González-Andrade M, Mata R. Additional α-glucosidase inhibitors from Malbranchea flavorosea (Leotiomycetes, Ascomycota). J Antibiot (Tokyo) 2018; 71:862-871. [DOI: 10.1038/s41429-018-0075-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 05/28/2018] [Accepted: 06/08/2018] [Indexed: 01/03/2023]
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34
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Smilax aristolochiifolia Root Extract and Its Compounds Chlorogenic Acid and Astilbin Inhibit the Activity of α-Amylase and α-Glucosidase Enzymes. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:6247306. [PMID: 30046343 PMCID: PMC6036819 DOI: 10.1155/2018/6247306] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/12/2018] [Accepted: 04/23/2018] [Indexed: 12/24/2022]
Abstract
Regulating activities of α-amylase and α-glucosidase through the use of specific inhibitors is a main strategy for controlling type 2 diabetes. Smilax aristolochiifolia root decoctions are traditionally used in Mexico as hypoglycemic and for weight loss, but the active principles and mechanisms underlying such putative metabolic effects are yet unknown. Here, we isolated the major bioactive compounds from a hydroethanolic extract of S. aristolochiifolia root by fast centrifugal partition chromatography and evaluated their effects against pancreatic α-amylase and yeast α-glucosidase. A chlorogenic acid-rich fraction (CAF) inhibited α-amylase activity with an IC50 value of 59.28 μg/mL in an uncompetitive manner and α-glucosidase activity with an IC50 value of 9.27 μg/mL in a noncompetitive mode. Also, an astilbin-rich fraction (ABF) inhibited α-glucosidase activity with an IC50 value of 12.30 μg/mL, in a noncompetitive manner. CAF inhibition α-amylase was as active as acarbose while both CAF and ABF were 50-fold more potent inhibitors of α-glucosidase than acarbose. The molecular docking results of chlorogenic acid and astilbin with α-amylase and α-glucosidase enzymes correlated with the inhibition mechanisms suggested by enzymatic assays. Our results prove that S. aristolochiifolia roots contain chlorogenic acid and astilbin, which inhibit carbohydrates-hydrolyzing enzymes, suggesting a new mechanism for the hypoglycemic effect reported for this plant.
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35
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Cristians S, Bye R, Nieto-Sotelo J. Molecular Markers Associated With Chemical Analysis: A Powerful Tool for Quality Control Assessment of Copalchi Medicinal Plant Complex. Front Pharmacol 2018; 9:666. [PMID: 29988415 PMCID: PMC6024007 DOI: 10.3389/fphar.2018.00666] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 06/04/2018] [Indexed: 01/05/2023] Open
Abstract
The copalchi complex, Hintonia latiflora, H. standleyana, and Exostema caribaeum, is widely used in Mexico for treating diabetes and gastrointestinal disorders. The first therapeutic use for H. latiflora bark was registered in the "Florentine Codex" in the sixteenth century. The latest pharmacological and phytochemical studies revealed that the infusion of the leaves have hypoglycemic, antihyperglycemic and gastroprotective activities. For these reasons the monograph of the main copalchi species, H. latiflora, was recently added to the Mexican Herbal Pharmacopoeia. Nevertheless, quality control parameters are focused to the bark but not to the leaves. Moreover, information about other Rubiaceae species is needed. The main goal of this study was to generate molecular and chemical markers for quality control of the copalchi complex raw material. In addition, the resolution of the taxonomical ambiguity between H. latiflora and H. standleyana, as well as the testing of the molecular and chemical markers in different geographical batches, were aims of this study. The molecular markers and chemical profiles of the leaf infusions were generated considering three different populations for H. latiflora and separate individuals of the three species (HL, n = 10; HS, n = 3; EC, n = 4). The molecular markers matK, rbcL, trnH-psbA, rpl32-trnL, and ITS2 were tested for their discriminating capabilities. Chemical profiles of the leaf infusions were obtained by means of HPLC analyses using chlorogenic acid and 4-phenylcoumarins as chemical markers. The concatenated sequence of the molecular markers trnH-psbA, rpl32-trnL, and ITS2 clearly distinguished the three taxa, clarifying the taxonomical ambiguity of the Hintonia genus. Additionally, the chemical profiles allowed the unequivocal identification of each species supporting the molecular results; the geographical origin of the samples did not modify neither the chemical profiles nor the concatenated sequence of H. latiflora, suggesting that it is a robust identity test. The complementary use of molecular and chemical markers will assure the quality of plant material used in traditional medicine for therapeutic purposes, and should be valuable new information for the National Health authorities as a part of the Mexican Herbal Pharmacopoeia.
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Affiliation(s)
- Sol Cristians
- Laboratorio de Etnobotánica, Instituto de Biología, Jardín Botánico, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Robert Bye
- Laboratorio de Etnobotánica, Instituto de Biología, Jardín Botánico, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Jorge Nieto-Sotelo
- Laboratorio de Fisiología Molecular, Instituto de Biología, Jardín Botánico, Universidad Nacional Autónoma de México, Mexico City, Mexico
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36
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Rosas-Ramírez D, Escandón-Rivera S, Pereda-Miranda R. Morning glory resin glycosides as α-glucosidase inhibitors: In vitro and in silico analysis. PHYTOCHEMISTRY 2018; 148:39-47. [PMID: 29421509 DOI: 10.1016/j.phytochem.2018.01.012] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 01/14/2018] [Accepted: 01/15/2018] [Indexed: 05/28/2023]
Abstract
Twenty-seven individual resin glycosides from the morning glory family (Convolvulaceae) were evaluated for their α-glucosidase inhibitory potential. Four of these compounds displayed an inhibitory activity comparable to acarbose, which was used as a positive control. Molecular modeling studies performed by docking analysis were accomplished to predict that the active compounds and acarbose bind to the α-1,4-glucosidase enzyme catalytic site of MAL12 from the yeast Saccharomyces cerevisiae through stable hydrogen bonds primarily with the amino acid residues HIS279 and GLN322. Docking studies with the human maltase-glucoamylase (MGAM) also identified binding modes for resin glycosides inside the catalytic site in the proximity of TYR1251. These results postulate that resin glycosides may be a source of phytotherapeutic agents with antihyperglycemic properties for the prophylaxis and treatment of non-insulin-dependent type 2 diabetes mellitus.
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Affiliation(s)
- Daniel Rosas-Ramírez
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Mexico.
| | - Sonia Escandón-Rivera
- Departamento de Biología Celular, Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico
| | - Rogelio Pereda-Miranda
- Departamento de Farmacia, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, 04510, Mexico
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37
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Wang B, Liu T, Wu Z, Zhang L, Sun J, Wang X. Synthesis and biological evaluation of stilbene derivatives coupled to NO donors as potential antidiabetic agents. J Enzyme Inhib Med Chem 2018; 33:416-423. [PMID: 29374975 PMCID: PMC7011920 DOI: 10.1080/14756366.2018.1425686] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The work is focused on the design of drugs that prevent and treat diabetes and its complications. A novel class of stilbene derivatives were prepared by coupling NO donors of alkyl nitrate and were fully characterised by NMR and other techniques. These compounds were tested in vitro activity, including α-glucosidase inhibitory activity, aldose reductase (AR) inhibitory activity and advanced glycation end products (AGEs) formation inhibitory activity. A class of modified compounds could play a significant effect for treatment of diabetic complications. Target compounds 3e and 7c offered a potential drug design concept for the development of therapeutic or preventive agents for diabetes and its complications.
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Affiliation(s)
- Bing Wang
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , China.,b Institute of Materia Medica, Shandong Academy of Medical Sciences , Jinan , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , China
| | - Teng Liu
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , China.,b Institute of Materia Medica, Shandong Academy of Medical Sciences , Jinan , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , China
| | - Zhongyu Wu
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , China.,b Institute of Materia Medica, Shandong Academy of Medical Sciences , Jinan , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , China
| | - Lei Zhang
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , China.,b Institute of Materia Medica, Shandong Academy of Medical Sciences , Jinan , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , China
| | - Jie Sun
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , China.,b Institute of Materia Medica, Shandong Academy of Medical Sciences , Jinan , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , China
| | - Xiaojing Wang
- a School of Medicine and Life Sciences , University of Jinan-Shandong Academy of Medical Sciences , Jinan , China.,b Institute of Materia Medica, Shandong Academy of Medical Sciences , Jinan , China.,c Key Laboratory for Biotech-Drugs Ministry of Health , Jinan , China.,d Key Laboratory for Rare & Uncommon Diseases of Shandong Province , Jinan , China
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38
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39
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Wu HB, Liu TT, Wang WS, Feng JC, Tian HM. Oleanane-Type Saponins from the Roots of Ligulariopsis shichuana and Their α-Glucosidase Inhibitory Activities. Molecules 2017; 22:E1981. [PMID: 29149016 PMCID: PMC6150216 DOI: 10.3390/molecules22111981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 11/12/2017] [Accepted: 11/13/2017] [Indexed: 11/24/2022] Open
Abstract
Five new oleanane-type saponins, named ligushicosides A-E, and three known oleanane-type saponins were isolated from the roots of Ligulariopsis shichuana. Their structures were established by a combination of spectroscopic techniques, including 1D and 2D NMR and high resolution electrospray ionization mass spectroscopy (HR-ESI-MS). Furthermore, all isolates were evaluated for their yeast α-glucosidase inhibitory effects and exhibited potent inhibition against α-glucosidase, while compounds 1 and 2 showed excellent inhibitory activities. The 3-O-glycoside moiety in oleanane-type saponin is important for the α-glucosidase inhibitory effects.
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Affiliation(s)
- Hai-Bo Wu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
| | - Ting-Ting Liu
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
| | - Wen-Shu Wang
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
| | - Jin-Chao Feng
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
| | - Hong-Mei Tian
- College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
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40
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Gamboa-Gómez CI, Simental-Mendía LE, González-Laredo RF, Alcantar-Orozco EJ, Monserrat-Juarez VH, Ramírez-España JC, Gallegos-Infante JA, Moreno-Jiménez MR, Rocha-Guzmán NE. In vitro and in vivo assessment of anti-hyperglycemic and antioxidant effects of Oak leaves (Quercus convallata and Quercus arizonica) infusions and fermented beverages. Food Res Int 2017; 102:690-699. [PMID: 29196002 DOI: 10.1016/j.foodres.2017.09.040] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 09/14/2017] [Accepted: 09/17/2017] [Indexed: 12/01/2022]
Abstract
The aim of this study was to evaluate the anti-hyperglycemic and antioxidant effects of oak leaves infusions and fermented beverages from Quercus convallata and Q. arizonica in vitro and in vivo. Female C57BL/6 mice fed with high saturated fat and fructose diet-induced obesity were treated with oak leaves beverages (200 μL/per day equivalent to 15mg of lyophilized sample/Kg of body weight for infusions and 31mg of lyophilized sample/Kg of body weight for fermented beverages) for 3months and an oral glucose tolerance test (OGTT) was performed. Blood plasma was obtained for determination of glucose, lipid profile, and oxidative stress markers (ABTS, nitric oxide, and ORAC assays). Insulin resistance was estimated using the product of triglycerides and glucose (TyG). Oak leaves infusions and fermented beverages exhibited exerted inhibition of α-amylase (8-15% and 5-9%, respectively) and α-glucosidase (98% and 99%, respectively) enzymes. After OGTT, the groups treated with either oak leaves infusions or fermented beverages showed lower glucose levels compared with the obesity control group (18%) and a similar glucose tolerance to healthy control group. On long-term evaluation, intervention groups showed a significant reduction in fasting glucose concentrations (41-50% for oak leaves infusions and 52-66% for fermented beverages) and TyG index (4.2-4.6% for oak leaves infusions and 5.9-7.5% for fermented beverages) compared with the obese control group. Oak leaves infusions and fermented beverages had antioxidant potential in vitro and scavenging activity for radicals such as peroxyl and peroxynitrite anions. Our results suggest anti-hyperglycemic and antioxidant effects of beverages prepared with leaves of Quercus species in vitro and in vivo.
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Affiliation(s)
- Claudia I Gamboa-Gómez
- Instituto Tecnológico de Durango, Felipe Pescador 1830 Ote., 34080 Durango, Dgo., Mexico; Biomedical Research Unit Mexican Social Security Institute, 34067 Durango, Mexico
| | | | | | | | | | - Julio C Ramírez-España
- Instituto Tecnológico de Durango, Felipe Pescador 1830 Ote., 34080 Durango, Dgo., Mexico
| | | | | | - Nuria E Rocha-Guzmán
- Instituto Tecnológico de Durango, Felipe Pescador 1830 Ote., 34080 Durango, Dgo., Mexico.
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41
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Nguyen VB, Nguyen AD, Wang SL. Utilization of Fishery Processing By-Product Squid Pens for α-Glucosidase Inhibitors Production by Paenibacillus sp. Mar Drugs 2017; 15:md15090274. [PMID: 28867763 PMCID: PMC5618413 DOI: 10.3390/md15090274] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 08/10/2017] [Accepted: 08/26/2017] [Indexed: 12/16/2022] Open
Abstract
The supernatants (the solution part received after centrifugation) of squid pens fermented by four species of Paenibacillus showed potent inhibitory activity against α-glucosidases derived from yeast (79–98%) and rats (76–83%). The inhibition of acarbose—a commercial antidiabetic drug, used against yeast and rat α-glucosidases—was tested for comparison; it showed inhibitory activity of 64% and 88%, respectively. Other chitinolytic or proteolytic enzyme-producing bacterial strains were also used to ferment squid pens, but no inhibition activity was detected from the supernatants. Paenibacillus sp. TKU042, the most active α-glucosidase inhibitor (aGI)-producing strain, was selected to determine the optimal cultivation parameters. This bacterium achieved the highest aGI productivity (527 µg/mL) when 1% squid pens were used as the sole carbon/nitrogen source with a medium volume of 130 mL (initial pH 6.85) in a 250 mL flask (48% of air head space), at 30 °C for 3–4 d. The aGI productivity increased 3.1-fold after optimization of the culture conditions. Some valuable characteristics of Paenibacillus aGIs were also studied, including pH and thermal stability and specific inhibitory activity. These microbial aGIs showed efficient inhibition against α-glucosidases from rat, yeast, and bacteria, but weak inhibition against rice α-glucosidase with IC50 values of 362, 252, 189, and 773 µg/mL, respectively. In particular, these aGIs showed highly stable activity over a large pH (2–13) and temperature range (40–100 °C). Various techniques, including: Diaoin, Octadecylsilane opened columns, and preparative HPLC coupled with testing bioactivity resulted in isolating a main active compound; this major inhibitor was identified as homogentisic acid (HGA). Notably, HGA was confirmed as a new inhibitor, a non-sugar-based aGI, and as possessing stronger activity than acarbose with IC50, and maximum inhibition values of 220 μg/mL, 95%, and 1510 μg/mL, 65%, respectively. These results suggest that squid pens, an abundant and low-cost fishery processing by-product, constitute a viable source for the production of antidiabetic materials via fermentation by strains of Paenibacillus. This fermented product shows promising applications in diabetes or diabetes related to obesity treatment due to their stability, potent bioactivity, and efficient inhibition against mammalian enzymes.
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Affiliation(s)
- Van Bon Nguyen
- Department of Science and Technology, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam.
| | - Anh Dzung Nguyen
- Institute of Biotechnology and Environment, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam.
| | - San-Lang Wang
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan.
- Life Science Development Center, Tamkang University, New Taipei City 25137, Taiwan.
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Escandón-Rivera S, Pérez-Vásquez A, Navarrete A, Hernández M, Linares E, Bye R, Mata R. Anti-Hyperglycemic Activity of Major Compounds from Calea ternifolia. Molecules 2017; 22:molecules22020289. [PMID: 28216594 PMCID: PMC6155573 DOI: 10.3390/molecules22020289] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 02/08/2017] [Accepted: 02/09/2017] [Indexed: 12/28/2022] Open
Abstract
Demethylisoencecalin (1) and caleins A (4) and C (5) (3.16–31.6 mg/kg, p.o.), the major components from an infusion of Calea ternifolia controlled postprandial glucose levels during an oral sucrose tolerance test (OSTT, 3 g/kg) in normal and nicotinamide/streptozotocin (NA/STZ, 40/100 mg/kg) hyperglicemic mice. The effects were comparable to those of acarbose (5 mg/kg). During the isolation of 1, 4, and 5, four additional metabolites not previously reported for the plant, were obtained, namely 6-acetyl-5-hydroxy-2-methyl-2-hydroxymethyl-2H-chromene (3), herniarin (6), scoparone (7), and 4′,7-dimethylapigenin (8). In addition, the structure of calein C (5) was confirmed by X-ray analysis. Pharmacological evaluation of the essential oil of the species (31.6–316.2 mg/kg, p.o.) provoked also an important decrement of blood glucose levels during an OSTT. Gas chromatography coupled with mass spectrometry (GC-MS) analysis of the headspace solid phase microextraction (HS-SPME)-adsorbed compounds and active essential oil obtained by hydrodistillation revealed that chromene 1 was the major component (19.92%); sesquiterpenes represented the highest percentage of the essential oil content (55.67%) and included curcumene (7.10%), spathulenol (12.95%) and caryophyllene oxide (13.0%). A suitable High Performance Liquid Chromatography (HPLC) method for quantifying chromenes 1 and 6-hydroxyacetyl-5-hydroxy-2,2-dimethyl-2H-chromene (2) was developed and validated according to standard protocols.
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Affiliation(s)
- Sonia Escandón-Rivera
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Araceli Pérez-Vásquez
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Andrés Navarrete
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Mariana Hernández
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Edelmira Linares
- Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Robert Bye
- Instituto de Biología, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
| | - Rachel Mata
- Facultad de Química, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico.
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Wang B, Li N, Liu T, Sun J, Wang X. Synthesis and biological evaluation of novel neoflavonoid derivatives as potential antidiabetic agents. RSC Adv 2017. [DOI: 10.1039/c7ra06457h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Various substituted neoflavonoid derivatives were synthesized. These neoflavonoid derivatives were screened for antioxidant, a-glucosidase inhibitory, ALR2 inhibitory and advanced glycation end-product formation inhibitory activities.
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Affiliation(s)
- Bing Wang
- School of Medicine and Life Sciences
- University of Jinan
- Shandong Academy of Medical Sciences
- Jinan 250200
- China
| | - Na Li
- School of Medicine and Life Sciences
- University of Jinan
- Shandong Academy of Medical Sciences
- Jinan 250200
- China
| | - Teng Liu
- School of Medicine and Life Sciences
- University of Jinan
- Shandong Academy of Medical Sciences
- Jinan 250200
- China
| | - Jie Sun
- School of Medicine and Life Sciences
- University of Jinan
- Shandong Academy of Medical Sciences
- Jinan 250200
- China
| | - Xiaojing Wang
- School of Medicine and Life Sciences
- University of Jinan
- Shandong Academy of Medical Sciences
- Jinan 250200
- China
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Sheikh Y, Maibam BC, Talukdar NC, Deka DC, Borah JC. In vitro and in vivo anti-diabetic and hepatoprotective effects of edible pods of Parkia roxburghii and quantification of the active constituent by HPLC-PDA. JOURNAL OF ETHNOPHARMACOLOGY 2016; 191:21-28. [PMID: 27282664 DOI: 10.1016/j.jep.2016.06.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 04/25/2016] [Accepted: 06/04/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Parkia roxburghii G. Don. is a traditional medicinal plant and its pods are extensively used as food and medicine. It is believed by the traditional healers to have medicinal properties to treat diabetes, hypertension and urinary tract infections (Jamaluddin et al., 1994). MATERIALS AND METHODS The methanolic extract of pods of P roxburghii and fractions were screened for their α-glucosidase and α-amylase inhibitory activity. Anti-hyperglycemic effects were studied on streptozotocin (45mg/kg b.w.) induced diabetes in albino rats (seven groups, n=7 n=6), using different doses for 14 days. Plasma glucose concentration (HbA1c) was analysed using whole blood, while SGOT, SGPT, TG, TC and uric acid were analysed using serum, employing commercial kits. Quantitative analysis of the major active constituent was carried out by HPLC-PDA. RESULTS Bioactivity guided chemical investigation of the edible pods of P roxburghii identified sub-fraction EA-Fr 5 which significantly inhibited α-glucosidase (IC50 0.39±0.06 µgmL(-1)), reduced the blood glucose level to normal, and lowered the elevated levels of liver function enzymes SGOT and SGPT in STZ-induced diabetic rats. EA-Fr 5 was found to contain epigallocatechin gallate (1) and hyperin (2) which exhibited significantly higher α-glucosidase inhibitory potency with IC50 0.51±0.09 and 0.71±0.03µM respectively. EA-Fr 5 contained 379.82±2.90mg/g of EGCG, the major active constituent which manifests a broad spectrum of biological activities. CONCLUSION The present investigation for the first time reports the occurrence of EGCG and hyperin in P roxburghii and substantiates the traditional use of pods of P roxburghii as dietary supplement for management of diabetes with significantly promising α-glucosidase inhibitory potency and anti-hyperglycemic as well as hepatoprotective effects.
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Affiliation(s)
- Yunus Sheikh
- Laboratory of Natural Medicinal Chemistry, Natural Product Chemistry & Pharmacology Programme, Institute of Bioresources & Sustainable Development, Takyelpat, Imphal 795001, Manipur, India
| | - Beebina Chanu Maibam
- Laboratory of Natural Medicinal Chemistry, Natural Product Chemistry & Pharmacology Programme, Institute of Bioresources & Sustainable Development, Takyelpat, Imphal 795001, Manipur, India
| | - Narayan Chandra Talukdar
- Laboratory of Natural Medicinal Chemistry, Natural Product Chemistry & Pharmacology Programme, Institute of Bioresources & Sustainable Development, Takyelpat, Imphal 795001, Manipur, India
| | | | - Jagat Chandra Borah
- Laboratory of Natural Medicinal Chemistry, Natural Product Chemistry & Pharmacology Programme, Institute of Bioresources & Sustainable Development, Takyelpat, Imphal 795001, Manipur, India.
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Lai JCY, Lai HY, Nalamolu KR, Ng SF. Treatment for diabetic ulcer wounds using a fern tannin optimized hydrogel formulation with antibacterial and antioxidative properties. JOURNAL OF ETHNOPHARMACOLOGY 2016; 189:277-289. [PMID: 27208868 DOI: 10.1016/j.jep.2016.05.032] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 05/13/2016] [Accepted: 05/14/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Blechnum orientale Linn. (B. orientale) is a fern traditionally used by the natives as a poultice to treat wounds, boils, ulcers, blisters, abscesses, and sores on the skin. AIM OF THE STUDY To investigate the wound healing ability of a concentrated extract of B. orientale in a hydrogel formulation in healing diabetic ulcer wounds. MATERIALS AND METHODS The water extract from the leaves of B. orientale was separated from the crude methanolic extract and subjected to flash column chromatography techniques to produce concentrated fractions. These fractions were tested for phytochemical composition, tannin content, antioxidative and antibacterial activity. The bioactive fraction was formulated into a sodium carboxymethylcellulose hydrogel. The extract-loaded hydrogels were then characterized and tested on excision ulcer wounds of streptozotocin-induced diabetic rats. Wound size was measured for 14 days. Histopathological studies were conducted on the healed wound tissues to observe for epithelisation, fibroblast proliferation and angiogenesis. All possible mean values were subjected to statistical analysis using One-way ANOVA and post-hoc with Tukey's T-test (P<0.05). RESULTS One fraction exhibited strong antioxidative and antibacterial activity. The fraction was also highly saturated with tannins, particularly condensed tannins. Fraction W5-1 exhibited stronger antioxidant activity compared to three standards (α-Tocopherol, BHT and Trolox-C). Antibacterial activity was also present, and notably bactericidal towards Methicillin-resistant Staphylococcus aureus (MRSA) at 0.25mg/ml. The extract-loaded hydrogels exhibited shear-thinning properties, with high moisture retention ability. The bioactive fraction at 4% w/w was shown to be able to close diabetic wounds by Day 12 on average. Other groups, including controls, only exhibited wound closure by Day 14 (or not at all). Histopathological studies had also shown that extract-treated wounds exhibited re-epithelisation, higher fibroblast proliferation, collagen synthesis, and angiogenesis. CONCLUSION The ethnopharmacological effects of using B. orientale as a topical treatment for external wounds was validated and was also significantly effective in treating diabetic ulcer wounds. Thus, B. orientale extract hydrogel may be presented as a potential treatment for diabetic ulcer wounds.
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Affiliation(s)
- Jordan Chia-Yung Lai
- School of Biosciences, Taylor's University, No. 1, Jalan Taylor's, 47500 Subang Jaya, Malaysia
| | - How-Yee Lai
- School of Biosciences, Taylor's University, No. 1, Jalan Taylor's, 47500 Subang Jaya, Malaysia.
| | - Koteswara Rao Nalamolu
- School of Medicine, Taylor's University, No. 1, Jalan Taylor's, 47500 Subang Jaya, Malaysia
| | - Shiow-Fern Ng
- Centre of Drug Delivery Research, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, 50300 Kuala Lumpur, Malaysia
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Domínguez-Mendoza EA, Cornejo-Garrido J, Burgueño-Tapia E, Ordaz-Pichardo C. Antidiabetic effect, antioxidant activity, and toxicity of 3′,4′-Di-O-acetyl-cis-khellactone in Streptozotocin-induced diabetic rats. Bioorg Med Chem Lett 2016; 26:4086-91. [DOI: 10.1016/j.bmcl.2016.06.071] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 06/24/2016] [Indexed: 12/30/2022]
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47
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Kim TH. A novel α-glucosidase inhibitory constituent from Uncaria gambir. J Nat Med 2016; 70:811-5. [PMID: 27262298 DOI: 10.1007/s11418-016-1014-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 05/24/2016] [Indexed: 12/29/2022]
Abstract
Bioactivity-guided fractionation of an aqueous methanolic extract of manufactured gambir product from Uncaria gambir with in vitro α-glucosidase inhibitory activity was performed to isolate a novel prenyl resorcinol derivative (1) together with seven known compounds, including two flavone glycosides (2, 3), three catechin analogues (4-6), and two simple phenolics (7, 8). Structures of the isolated compounds were determined by analysis of physical and spectroscopic data (NMR, UV, [α]D, and MS). All isolates were evaluated for in vitro α-glucosidase inhibitory activity. Among the compounds, novel compound 1, possessing an unprecedented spirocyclopropane ring in the molecule, showed the most potent α-glucosidase inhibitory activity in this assay. On the other hand, compounds 4 and 7 showed less potent inhibitory effects in this same bioassay, with half-maximal inhibitory concentration values of 17.3 ± 1.0 μM and 27.0 ± 0.9 μM, respectively.
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Affiliation(s)
- Tae Hoon Kim
- Department of Food Science and Biotechnology, Daegu University, 201 Daegudae-ro, Gyeongsan-si, Gyeongsangbuk-do, 38453, Republic of Korea.
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48
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Sun S, Kadouh HC, Zhu W, Zhou K. Bioactivity-guided isolation and purification of α-glucosidase inhibitor, 6- O- D-glycosides, from Tinta Cão grape pomace. J Funct Foods 2016; 23:573-579. [PMID: 30381790 DOI: 10.1016/j.jff.2016.03.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Bioactivity-guided fractionation methods were used to identify and purify active components in Tinta Cão grape pomace extract (GPE) that inhibit intestinal α-glucosidases. One active α-glucosidase inhibitor and one new natural product determined as 6-O-(p-coumaroyl)-D-glucopyranoside and methyl 6-O-(p-coumaroyl)-β-D-galactopyranoside, respectively, were isolated from GPE that were previously shown to potently inhibit α-glucosidase. Analysis of the relationship between structures and activity suggested that C1-OH of saccharide moiety in phenolic glycosides is necessary for this potent inhibition of intestinal α-glucosidases for the potential development of a novel anti-hyperglycaemic dietary supplement.
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Affiliation(s)
- Shi Sun
- Department of Nutrition & Food Science, Wayne State University, Detroit, MI 48202, United States
| | - Hoda Chaouki Kadouh
- Department of Nutrition & Food Science, Wayne State University, Detroit, MI 48202, United States
| | - Wenjun Zhu
- Department of Nutrition & Food Science, Wayne State University, Detroit, MI 48202, United States
| | - Kequan Zhou
- Department of Nutrition & Food Science, Wayne State University, Detroit, MI 48202, United States
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Chen S, Liu Y, Liu Z, Cai R, Lu Y, Huang X, She Z. Isocoumarins and benzofurans from the mangrove endophytic fungus Talaromyces amestolkiae possess α-glucosidase inhibitory and antibacterial activities. RSC Adv 2016. [DOI: 10.1039/c6ra02566h] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Six new isocoumarins, compounds1–4and14–15, two new benzofurans,16–17, along with nine known isocoumarin analogues,5–13were obtained from the mangrove endophytic fungusTalaromyces amestolkiaeYX1.
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Affiliation(s)
- Senhua Chen
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Yayue Liu
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Zhaoming Liu
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Runlin Cai
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Yongjun Lu
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-Sen University)
- Department of Education of Guangdong Province
- Guangzhou 510080
- China
- School of Life Sciences and Biomedical Center
| | - Xishan Huang
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Zhigang She
- School of Chemistry and Chemical Engineering
- Sun Yat-Sen University
- Guangzhou 510275
- China
- Key Laboratory of Functional Molecules from Oceanic Microorganisms (Sun Yat-Sen University)
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50
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Wubshet SG, Brighente IMC, Moaddel R, Staerk D. Magnetic Ligand Fishing as a Targeting Tool for HPLC-HRMS-SPE-NMR: α-Glucosidase Inhibitory Ligands and Alkylresorcinol Glycosides from Eugenia catharinae. JOURNAL OF NATURAL PRODUCTS 2015; 78:2657-2665. [PMID: 26496505 PMCID: PMC5036580 DOI: 10.1021/acs.jnatprod.5b00603] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A bioanalytical platform combining magnetic ligand fishing for α-glucosidase inhibition profiling and HPLC-HRMS-SPE-NMR for structural identification of α-glucosidase inhibitory ligands, both directly from crude plant extracts, is presented. Magnetic beads with N-terminus-coupled α-glucosidase were synthesized and characterized for their inherent catalytic activity. Ligand fishing with the immobilized enzyme was optimized using an artificial test mixture consisting of caffeine, ferulic acid, and luteolin before proof-of-concept with the crude extract of Eugenia catharinae. The combination of ligand fishing and HPLC-HRMS-SPE-NMR identified myricetin 3-O-α-L-rhamnopyranoside, myricetin, quercetin, and kaempferol as α-glucosidase inhibitory ligands in E. catharinae. Furthermore, HPLC-HRMS-SPE-NMR analysis led to identification of six new alkylresorcinol glycosides, i.e., 5-(2-oxopentyl)resorcinol 4-O-β-D-glucopyranoside, 5-propylresorcinol 4-O-β-D-glucopyranoside, 5-pentylresorcinol 4-O-[α-D-apiofuranosyl-(1→6)]-β-D-glucopyranoside, 5-pentylresorcinol 4-O-β-D-glucopyranoside, 4-hydroxy-3-O-methyl-5-pentylresorcinol 1-O-β-D-glucopyranoside, and 3-O-methyl-5-pentylresorcinol 1-O-[β-D-glucopyranosyl-(1→6)]-β-D-glucopyranoside.
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Affiliation(s)
- Sileshi G. Wubshet
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Inês M. C. Brighente
- Laboratório de Química de Produtos Naturais, Departamento de Química, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis-SC, 88040-900, Brazil
| | - Ruin Moaddel
- Biomedical Research Center, National Institute on Aging, National Institutes of Health, 251 Bayview Boulevard, Baltimore, Maryland 21224, United States
| | - Dan Staerk
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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