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Tchuente Djoko C, Tamfu AN, Nyemb JN, Toko Feunaing R, Laurent S, Henoumont C, Talla E, Venditti A. In vitro α-glucosidase inhibitory activity of isolated compounds and semisynthetic derivative from aerial parts of Erythrina senegalensis DC. Nat Prod Res 2023; 37:3994-4003. [PMID: 36647748 DOI: 10.1080/14786419.2023.2167205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/04/2023] [Indexed: 01/18/2023]
Abstract
The current study was conducted to isolate the phytoconstituents from Erythrina senegalensis leaves and stem bark and evaluate their inhibitory activity against α-glucosidase, digestive enzyme related to diabetes mellitus. Phytochemical investigation of the leaves resulted in the isolation of three saponins (3-5), two triterpenoids (7 and 8) and two steroids (10a and 10b) as inseparable mixture, while one saponin (6), one triterpenoid (9) and one mixture of two cinnamates (2a and 2b) were isolated from the stem bark. Except for compounds 2 b, 7, 8, 10a and 10 b all the isolated compounds are reported here for the first time from the genus Erythrina. Acetylation of the mixture of two cinnamates (2a and 2b) led to a new diester derivative (1) trivially called erythrinamate. The extracts and pure compounds (3, 4, 6) showed good α-glucosidase inhibitory activity compared to the standard drug acarbose. The findings suggest that saponins of E. senegalensis could be used to develop potential anti-hyperglycemic drugs.
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Affiliation(s)
- Cyrille Tchuente Djoko
- Department of Chemistry, Faculty of Science, University of Ngaoundere, Ngaoundere, Cameroon
| | - Alfred Ngenge Tamfu
- Department of Chemical Engineering, School of Chemical Engineering and Mineral Industries, University of Ngaoundere, Ngaoundere, Cameroon
| | - Jean Noël Nyemb
- Department of Refining and Petrochemistry, National Advanced School of Mines and Petroleum Industries, The University of Maroua, Kaele, Cameroon
| | - Romeo Toko Feunaing
- Department of Chemistry, Faculty of Science, University of Ngaoundere, Ngaoundere, Cameroon
| | - Sophie Laurent
- Laboratory of NMR and Molecular Imaging, Department of General, Organic and Biomedical Chemistry, University of Mons, Mons, Belgium
| | - Céline Henoumont
- Laboratory of NMR and Molecular Imaging, Department of General, Organic and Biomedical Chemistry, University of Mons, Mons, Belgium
| | - Emmanuel Talla
- Department of Chemistry, Faculty of Science, University of Ngaoundere, Ngaoundere, Cameroon
- Department of Chemical Engineering, School of Chemical Engineering and Mineral Industries, University of Ngaoundere, Ngaoundere, Cameroon
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Protective effect of Basella alba leaf against diabetic nephropathy in rats. ADVANCES IN TRADITIONAL MEDICINE 2020. [DOI: 10.1007/s13596-020-00458-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Patra S, Bhattacharya S, Bala A, Haldar PK. Antidiabetic effect of Drymaria cordata leaf against streptozotocin-nicotinamide-induced diabetic albino rats. J Adv Pharm Technol Res 2020; 11:44-52. [PMID: 32154158 PMCID: PMC7034175 DOI: 10.4103/japtr.japtr_98_19] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Drymaria cordata (Caryophyllaceae), commonly known as Abhijalo in Sikkimese-Tibetan, is a creeping herb grown in tropical and subtropical regions of the world. It is used by ethnic groups of Sikkim, North-East India, for the treatment of various diseases including diabetes. This study aimed to investigate the antidiabetic effect of methanol extract from D. cordata leaf (DCME) in streptozotocin (STZ) and nicotinamide (NA)-induced type 2 diabetes in rats. Diabetic Wistar albino rats were treated with DCME at 200 mg/kg and 400 mg/kg orally for 28 days. Metformin (150 mg/kg b.w.) was used as a reference drug. Fasting blood glucose (FBG) level; serum biochemical parameters; and liver, kidney, and antioxidant parameters were estimated, and pancreatic histopathology was performed after 28 days of treatment. Administration of DCME to STZ-NA-induced diabetic rats at 200 mg/kg and 400 mg/kg orally for 28 days exhibited statistically significant (P < 0.05) and dose-dependent reduction of FBG, glycosylated hemoglobin, serum lipid, and hepatorenal antioxidative parameters in DCME-treated groups when compared to those of diabetic controls. Histopathological studies of pancreas in DCME-treated rats showed improvement in β-cell density compared to diabetic group. The results demonstrate the significant antidiabetic potential of D. cordata leaf in albino rats plausibly by reducing oxidative stress and serum lipids levels, justifying the folkloric use of this plant in the treatment of diabetes.
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Affiliation(s)
- Susmita Patra
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, West Bengal, India
| | | | - Asis Bala
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, Hajipur, Bihar, India
| | - Pallab Kanti Haldar
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, West Bengal, India
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Martins J, Brijesh S. Anti-depressant activity of Erythrina variegata bark extract and regulation of monoamine oxidase activities in mice. JOURNAL OF ETHNOPHARMACOLOGY 2020; 248:112280. [PMID: 31600560 DOI: 10.1016/j.jep.2019.112280] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 08/09/2019] [Accepted: 10/04/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Erythrina variegata, commonly referred to as 'Indian coral tree' belongs to the Fabaceae family. It is a plant native to the coast of India, China and is distributed in tropical and subtropical regions worldwide. In traditional medicine, E. variegata is known to exhibit anxiolytic and anti-convulsant activities and has been used as a nervine sedative. As per the Indian Materia Medica, E. variegata barks have been traditionally known to act on the central nervous system. However, there is a lack of data demonstrating this. AIM OF THE STUDY Our study focuses on previously unreported anti-depressant activity of E. variegata bark ethanolic extract (EBE) and determination of its mechanism of action possibly through regulation of monoamine oxidase activity in mouse brain homogenates. MATERIALS AND METHODS EBE was characterized using standard protocols for phytochemical analysis, followed by liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS) analysis. The compounds in EBE (previously reported for anti-depressant activity), were further studied by LC-MS/MS and GC-MS/MS analysis. Anti-depressant activity of EBE (50, 100, 200 and 500 mg/kg) was evaluated in Swiss albino mice using acute and chronic tail suspension test (TST) and forced swim test (FST) models. Furthermore, the possible mechanism of action of EBE was evaluated using the chronic unpredictable mild stress (CUMS) model, wherein inhibitory effects on monoamine oxidase (MAO) A and B were assessed by spectrophotometric-chemical analysis in mouse whole brain homogenates. RESULTS EBE showed significant reduction in immobility time periods in both TST (acute: 50, 100 and 200 mg/kg and chronic: 100 and 200 mg/kg) and FST (acute: 200 mg/kg and chronic: 100, 200 and 500 mg/kg) models. Moreover, the locomotor activity test confirmed that acute and chronic administration of EBE did not significantly affect the motor activity of mice. In the CUMS model, EBE when administered alone (100 and 200 mg/kg) and in combination (50, 100 and 200 mg/kg) with escitalopram (15 mg/kg), showed significant reductions in immobility time periods compared to the control group, in the acute FST performed on 22nd day of CUMS. Furthermore, when administered alone (50, 100 and 200 mg/kg), EBE showed significant inhibition in MAO-A and B activities compared to the control group. When used in combination, EBE (50, 100 and 200 mg/kg) showed synergistic action with escitalopram (15 mg/kg), resulting in significantly greater inhibition of MAO-A and B activities, compared to both EBE alone and escitalopram alone. Phytochemical analysis of EBE revealed presence of sugars, steroids, glycosides, alkaloids and tannins. LC-MS, LC-MS/MS, GC-MS and GC-MS/MS analysis identified components in EBE, previously reported for their anti-depressant activity. CONCLUSIONS The study thus concluded the anti-depressant like activity of EBE. The study identified components present in EBE that may be responsible for its anti-depressant activity. The possible mechanism of action of EBE was also investigated in the CUMS model, wherein inhibitory effects of EBE on MAO-A and B activities in the mouse brain were demonstrated. Furthermore, the study confirms the traditional use of E. variegata barks in CNS related activities through its anti-depressant like activity.
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Affiliation(s)
- Jeanette Martins
- Sunandan Divatia School of Science, NMIMS (Deemed-to be) University, 3rd Floor, Bhaidas Sabhagriha Building, Bhaktivedanta Swami Marg, Vile Parle (W), Mumbai, 400 056, India.
| | - S Brijesh
- Sunandan Divatia School of Science, NMIMS (Deemed-to be) University, 3rd Floor, Bhaidas Sabhagriha Building, Bhaktivedanta Swami Marg, Vile Parle (W), Mumbai, 400 056, India.
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Panda SP, Panigrahy UP, Panda S, Jena BR. Stem extract of Tabebuia chrysantha induces apoptosis by targeting sEGFR in Ehrlich Ascites Carcinoma. JOURNAL OF ETHNOPHARMACOLOGY 2019; 235:219-226. [PMID: 30769041 DOI: 10.1016/j.jep.2019.02.023] [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] [Received: 12/28/2018] [Revised: 02/01/2019] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The plant Tabebuia chrysantha (Jaq.) Nicholson (Bignoniaceae) is commonly known as "Golden Goddess" in the Southern part of India and "Golden Trumpet Tree " in Central America. Stems of this plant have been traditionally used for antioxidant, anti-inflammatory, antimicrobial and anticancer actions. AIM OF THE STUDY To evaluate the antitumor activity of methanol extract of Tabebuia chrysantha stem (METC). MATERIALS AND METHODS The in vivo antitumor potential of METC against Ehrlich Ascites Carcinoma (EAC) in Swiss albino mice was assessed by evaluating tumor volume, viable and nonviable tumor cell count, tumor weight, hematological parameters, biochemical parameters, and antioxidant parameters. The in vitro antitumor potential of METC at different concentrations (100, 200, 400, 800, 1000) µg/mL has been evaluated, by using the MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] and Trypan blue dilution assay for a period of 3 h treatment. Before that, the crude extract was pre-screened for cytotoxicity property using Brine shrimp lethality bioassay. RESULTS Phytoconstituents 2-Hydroxynaphthalene-1,4-dione, β-lapachone and 2-((dimethylamino)methyl)-3-methoxynaphthalene-1,4-dione were isolated from the METC. Their occurrence and structures were determined by HPLC chromatography, UV spectroscopy, and 1D and 2D NMR spectroscopies respectively. The extract showed a direct cytotoxic effect on EAC cells in a dose-dependent manner with IG50 value 463.27 µg/mL in MTT assay and 443.58 µg/mL in trypan blue dilution assay. The METC (300 mg/kg) and 5-FU (30 mg/kg) exhibited significant (p < 0.001) decrease in tumor volume, tumor weight and viable cell count of EAC-treated mice. Also, hematological profile, tissue parameters such as lipid peroxidation, reduced glutathione, superoxide dismutase, and catalase were reverted to the normal levels compared to the EAC control group. The Western blotting analysis demonstrated apoptosis of carcinoma was due to inhibition of soluble epidermal growth factor receptor proteins (sEGFR) expression in the blood. CONCLUSION The antitumor potential of the stem extract of T chrysantha was due to naphthaquinones and polyphenol content in the crude extract and so T chrysantha could be a cytotoxic plant to control tumor growth.
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Affiliation(s)
- Siva Prasad Panda
- Pharmacology Research Division, KL College of Pharmacy, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur, India.
| | - Uttam Prasad Panigrahy
- Pharmaceutical Analysis Research Laboratory, CMR College of Pharmacy, Hyderabad, Telangana, India.
| | - Subhranshu Panda
- Pharmaceutics Research Division, KL College of Pharmacy, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur, India.
| | - Bikash R Jena
- Pharmaceutical Analysis Laboratory, SIMS College of Pharmacy, Guntur, India.
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Sathasivampillai SV, Rajamanoharan PRS, Munday M, Heinrich M. Plants used to treat diabetes in Sri Lankan Siddha Medicine - An ethnopharmacological review of historical and modern sources. JOURNAL OF ETHNOPHARMACOLOGY 2017; 198:531-599. [PMID: 27448453 DOI: 10.1016/j.jep.2016.07.053] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 06/21/2016] [Accepted: 07/18/2016] [Indexed: 05/13/2023]
Abstract
INTRODUCTION AND BACKGROUND In recent decades diabetes mellitus has become a considerable health problem in countries like Sri Lanka and results in an increasing economic burden hampering the social and economic development of these countries. About 60% to 70% of the rural population in Sri Lanka rely on indigenous medicinal systems as their main source for primary health care. Siddha (Tamil) Medicine is one of the four Sri Lankan traditional medicinal systems and it is practised mostly in the eastern and northern provinces of Sri Lanka where the majority of Tamils reside. AIM The foundation of this study is a documentation of plant species recorded in historical and modern Sri Lankan Siddha Medical documents used to treat diabetes. Based on the systematic documentation and analysis of Siddha concepts about diabetes and its signs and preparations used to treat diabetes in Sri Lankan Siddha Medicine, the plant species included in these preparations (excluding globally or very widely used, very well studied species) were evaluated in terms of the current state-of-the-art about these species' pharmacology and effectiveness in order to lay a foundation for their further development. METHOD Historic and modern Sri Lankan university texts books in Tamil were used as sources for information on diabetes Siddha concepts and antidiabetic Sri Lankan Siddha Medicine preparations. Information on the known antidiabetic effects of extracts and compounds obtained from these species were used in order to assess the current state of the art of these species. RESULTS AND DISCUSSION Information of ingredients, preparation methods, amount of ingredients used, and dosages of 60 antidiabetic Sri Lankan Siddha Medicine preparations were obtained. Animal parts including marine organisms, inorganic substances, and plants are the three types of ingredients used. Overall 171 plant species in 73 families were documented. Senna auriculata (L.) Roxb. (Fabaceae) was identified as the most frequently cited species. Globally distributed and very well studied plants were excluded in the pharmacological and clinical literature review which includes 123 plant species. The majority (48%) of the plant species reviewed were studied up to in vivo level as the current maximum level of scientific evidence available. Followed by 41% of species have not been studied for antidiabetic activities or did not show antidiabetic activity. Moreover, 6% and 5% were studied up to in vitro and in clinical levels, respectively. The majority of the species were studied only in the models that represent type 1 diabetes. CONCLUSION This is the first study systematically assessing the importance of preparations and plants used in antidiabetic Sri Lankan Siddha Medicine preparations. Antidiabetic plants are a crucial health care resource in Sri Lankan Siddha Medicine. This study also identified a wide range of methodological problems in the studies conducted so far. More and better type 2 diabetes models should be employed in future studies. This comprehensive review creates the basis for a more systematic study of these local resources.
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Affiliation(s)
| | - Pholtan R S Rajamanoharan
- Planning Unit, Provincial Department of Indigenous Medicine, Trincomalee, Eastern Province, Sri Lanka
| | - Michael Munday
- Research Cluster 'Biodiversity and Medicines', UCL School of Pharmacy, University of London, United Kingdom
| | - Michael Heinrich
- Research Cluster 'Biodiversity and Medicines', UCL School of Pharmacy, University of London, United Kingdom.
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Guasch L, Sala E, Ojeda MJ, Valls C, Bladé C, Mulero M, Blay M, Ardévol A, Garcia-Vallvé S, Pujadas G. Identification of novel human dipeptidyl peptidase-IV inhibitors of natural origin (Part II): in silico prediction in antidiabetic extracts. PLoS One 2012; 7:e44972. [PMID: 23028712 PMCID: PMC3448616 DOI: 10.1371/journal.pone.0044972] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Accepted: 08/16/2012] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Natural extracts play an important role in traditional medicines for the treatment of diabetes mellitus and are also an essential resource for new drug discovery. Dipeptidyl peptidase IV (DPP-IV) inhibitors are potential candidates for the treatment of type 2 diabetes mellitus, and the effectiveness of certain antidiabetic extracts of natural origin could be, at least partially, explained by the inhibition of DPP-IV. METHODOLOGY/PRINCIPAL FINDINGS Using an initial set of 29,779 natural products that are annotated with their natural source and an experimentally validated virtual screening procedure previously developed in our lab (Guasch et al.; 2012) [1], we have predicted 12 potential DPP-IV inhibitors from 12 different plant extracts that are known to have antidiabetic activity. Seven of these molecules are identical or similar to molecules with described antidiabetic activity (although their role as DPP-IV inhibitors has not been suggested as an explanation for their bioactivity). Therefore, it is plausible that these 12 molecules could be responsible, at least in part, for the antidiabetic activity of these extracts through their inhibitory effect on DPP-IV. In addition, we also identified as potential DPP-IV inhibitors 6 molecules from 6 different plants with no described antidiabetic activity but that share the same genus as plants with known antidiabetic properties. Moreover, none of the 18 molecules that we predicted as DPP-IV inhibitors exhibits chemical similarity with a group of 2,342 known DPP-IV inhibitors. CONCLUSIONS/SIGNIFICANCE Our study identified 18 potential DPP-IV inhibitors in 18 different plant extracts (12 of these plants have known antidiabetic properties, whereas, for the remaining 6, antidiabetic activity has been reported for other plant species from the same genus). Moreover, none of the 18 molecules exhibits chemical similarity with a large group of known DPP-IV inhibitors.
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Affiliation(s)
- Laura Guasch
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - Esther Sala
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - María José Ojeda
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - Cristina Valls
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - Cinta Bladé
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - Miquel Mulero
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - Mayte Blay
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - Anna Ardévol
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
| | - Santiago Garcia-Vallvé
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
- Centre Tecnològic de Nutrició i Salut (CTNS), TECNIO, CEICS, Reus, Catalonia, Spain
| | - Gerard Pujadas
- Grup de Recerca en Nutrigenòmica, Departament de Bioquímica i Biotecnologia, Universitat Rovira i Virgili, Tarragona, Catalonia, Spain
- Centre Tecnològic de Nutrició i Salut (CTNS), TECNIO, CEICS, Reus, Catalonia, Spain
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