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Prakulanon J, Duangsrisai S, Vajrodaya S, Thongchin T. Evaluation of phytochemical profile, and antioxidant, antidiabetic activities of indigenous Thai fruits. PeerJ 2024; 12:e17681. [PMID: 39011385 PMCID: PMC11249001 DOI: 10.7717/peerj.17681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Accepted: 06/13/2024] [Indexed: 07/17/2024] Open
Abstract
Background This research aims to explore the phenolics identification, phenolics quantification, antioxidant and potential biofunctional properties of lesser-known Thai fruits and their potency to treat type 2 diabetes mellitus (T2DM). Including, Antidesma puncticulatum, Dillenia indica, Diospyros decandra, Elaeagnus latifolia, Flacourtia indica, Garcinia dulcis, Lepisanthes fruticose, Mimusops elengi, Muntingia calabura, Phyllanthus reticulatus, Streblus asper, Syzygium cumini, Syzygium malaccense, Willughbeia edulis and Schleichera oleosa were analyzed by their phenolic and flavonoid content. These fruits have received limited scientific attention, prompting an investigation into their health benefits, particularly their relevance to diabetes management. Methods The study utilized methanolic crude extracts to measure phenolic and flavonoid levels. Additionally, UHPLC-DAD was utilized to identify and quantify phenolics. The methanolic extracts were assessed for antioxidant and antidiabetic abilities, including α-glucosidase and α-amylase inhibition. Results and Conclusion The study highlighted S. cumini as a rich source of phenolic (980.42 ± 0.89 mg GAE/g and flavonoid (3.55 ± 0.02 mg QE/g) compounds with strong antioxidant activity (IC50 by DPPH; 3.00 ± 0.01 µg/ml, IC50 by ABTS; 40 ± 0.01 µg/ml, FRAP; 898.63 ± 0.02 mg TE/ml). Additionally, S. cumini exhibited promising antidiabetic effects (S. cumini IC50; 0.13 ± 0.01 mg/ml for α-glucosidase inhibition, 3.91 ± 0.05 mg/ml for α-amylase inhibition), compared to Acarbose (IC50; 0.86 ± 0.01 mg/ml for α-glucosidase inhibition, 0.39 ± 0.05 mg/ml for α-amylase inhibition). Remarkably, compounds like catechins, gallic acid, kaempferol, and ellagic acid were identified in various quantities.This study suggests that these fruits, packed with phenolics, hold the potential to be included in an anti-diabetic diet and even pharmaceutical applications due to their health-promoting properties.
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Affiliation(s)
| | | | | | - Thanawat Thongchin
- Department of Medical Science, Ministry of Public Health, Medicinal Plant Research Institute, Nonthaburi, Thailand
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Oliveira ESC, Pontes FLD, Acho LDR, da Silva BJP, do Rosário AS, Chaves FCM, Campos FR, Bezerra JDA, Lima ES, Machado MB. NMR and multivariate methods: Identification of chemical markers in extracts of pedra-ume-caá and their antiglycation, antioxidant, and enzymatic inhibition activities. PHYTOCHEMICAL ANALYSIS : PCA 2024; 35:552-566. [PMID: 38191126 DOI: 10.1002/pca.3312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/01/2023] [Accepted: 11/23/2023] [Indexed: 01/10/2024]
Abstract
INTRODUCTION In Brazil, the plant group popularly known as "pedra-ume-caá" is used in folk medicine for the treatment of diabetes, and its raw material is commonly sold. OBJECTIVE The aim of the study was to apply a method for chemical identification of extracts of dry pedra-ume-caá leaves using HPLC-high-resolution mass spectrometry (HRMS) and NMR and develop a multivariate model with NMR data to authenticate commercial samples. In addition, to evaluate the biological activities of the extracts. MATERIALS AND METHODS Dry extracts of Myrcia multiflora, Myrcia amazonica, Myrcia guianensis, Myrcia sylvatica, Eugenia punicifolia leaves, and 15 commercial samples (sold in Manaus and Belém, Brazil) were prepared by infusion. All the extracts were analysed using HPLC-high-resolution mass spectrometry (HRMS), NMR, principal component analysis (PCA), and hierarchical cluster analysis (HCA). The antidiabetic effect of extracts was evaluated according to enzymatic inhibition. Their content of total phenols, cell viability, and antioxidant and antiglycation activities were also determined. RESULTS HPLC-HRMS and NMR analysis of these extracts permitted the identification of 17 compounds. 1H NMR data combined with multivariate analyses allowed us to conclude that catechin, myricitrin, quercitrin, and gallic and quinic acids are the main chemical markers of pedra-ume-caá species. These markers were identified in 15 commercial samples of pedra-ume-caá. Additionally, only the extracts of M. multiflora and E. punicifolia inhibited α-glucosidase. All the extracts inhibited the formation of advanced glycation end products (AGEs) and showed free-radical-scavenging activity. These extracts did not present cytotoxicity. CONCLUSION This study revealed the chemical markers of matrices, and it was possible to differentiate the materials marketed as pedra-ume-caá. Moreover, this study corroborates the potential of these species for treating diabetes.
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Affiliation(s)
- Edinilze S C Oliveira
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Flávia L D Pontes
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Leonard D R Acho
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Bárbara Janaína P da Silva
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | | | - Francisco Célio M Chaves
- Unidade Amazônia Ocidental, Empresa Brasileira de Pesquisa Agropecuária-EMBRAPA, Manaus, Amazonas, Brazil
| | - Francinete R Campos
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
- Departamento de Farmácia, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Jaqueline de A Bezerra
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
- Departamento de Química, Ambiente e Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Amazonas, Manaus, Amazonas, Brazil
| | - Emerson S Lima
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Marcos B Machado
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
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Sereno AB, Pinto CD, Gibbert L, de Andrade MTP, da Silva MAB, Etgeton SAP, Miguel OG, Dias JDFG, Krüger CCH, de Messias Reason IJ. Cytotoxic and Phytotoxic Activities of Native Brazilian Forest Gabiroba ( Campomanesia xanthocarpa Berg.), Fruits, and Flour against Shrimp ( Artemia salina L.) and Lettuce ( Lactuca sativa L.). Foods 2023; 13:123. [PMID: 38201151 PMCID: PMC10779049 DOI: 10.3390/foods13010123] [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: 10/25/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
Gabiroba, a native fruit in Brazil's Atlantic Forest region, has significant nutritional and therapeutic properties. However, due to its seasonality, consumption by the population is limited. Thus, the development of gabiroba byproducts would add significant value to the food and therapeutic industries. Therefore, it is essential to study and support the lack of toxicity of gabiroba fruit extracts. In the present study, physicochemical analyses of fresh fruits (GF) and dehydrated whole gabiroba flour (WGF) and preliminary toxicity analyses of WGF were performed. The toxicity results showed a microcrustacean LC50 of >1000 mg/mL when exposed to WGF extracts at various concentrations (10-1000 μg/mL; p = 0.062) using the Artemia salina method, with no evidence observed of proliferative activity or toxic metabolic compounds in the WGF extract. The phytotoxicity of WGF using Lactuca sativa L. allowed germination and root growth at various concentrations of WGF extract, with the lowest (100 μg/mL) and highest (1000 μg/mL) concentrations exhibiting 98.3% and 100% seed germination, respectively. In conclusion, these results indicate that the WGF preparation preserved the nutritional and antioxidant potential of gabiroba fruits and that WGF is safe for use as a raw material in the food industry and for therapeutic purposes.
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Affiliation(s)
- Aiane Benevide Sereno
- Graduate Program in Internal Medicine, and Health Sciences, Federal University of Paraná (UFPR), R. Padre Camargo, 280, Curitiba 80.069-900, Paraná, Brazil; (C.D.P.); (M.A.B.d.S.); (I.J.d.M.R.)
| | - Carla Dayane Pinto
- Graduate Program in Internal Medicine, and Health Sciences, Federal University of Paraná (UFPR), R. Padre Camargo, 280, Curitiba 80.069-900, Paraná, Brazil; (C.D.P.); (M.A.B.d.S.); (I.J.d.M.R.)
| | - Luciana Gibbert
- Graduate Program in Pharmaceutical Sciences, Federal University of Paraná (UFPR), Av. Lothário Meissner, 632, Curitiba 80.210-170, Paraná, Brazil; (L.G.); (M.T.P.d.A.); (O.G.M.)
| | - Marina Talamini Piltz de Andrade
- Graduate Program in Pharmaceutical Sciences, Federal University of Paraná (UFPR), Av. Lothário Meissner, 632, Curitiba 80.210-170, Paraná, Brazil; (L.G.); (M.T.P.d.A.); (O.G.M.)
| | - Michelli Aparecida Bertolazo da Silva
- Graduate Program in Internal Medicine, and Health Sciences, Federal University of Paraná (UFPR), R. Padre Camargo, 280, Curitiba 80.069-900, Paraná, Brazil; (C.D.P.); (M.A.B.d.S.); (I.J.d.M.R.)
| | - Schaina Andriela Pontarollo Etgeton
- Graduate Program in Food, and Nutrition, Federal University of Paraná (UFPR), Av. Lothário Meissner, 632, Curitiba 80.210-170, Paraná, Brazil;
| | - Obdulio Gomes Miguel
- Graduate Program in Pharmaceutical Sciences, Federal University of Paraná (UFPR), Av. Lothário Meissner, 632, Curitiba 80.210-170, Paraná, Brazil; (L.G.); (M.T.P.d.A.); (O.G.M.)
| | - Josiane de Fátima Gaspari Dias
- Graduate Program in Pharmaceutical Sciences, Federal University of Paraná (UFPR), Av. Lothário Meissner, 632, Curitiba 80.210-170, Paraná, Brazil; (L.G.); (M.T.P.d.A.); (O.G.M.)
| | - Claudia Carneiro Hecke Krüger
- Department of Nutrition, Federal University of Paraná (UFPR), Av. Lothário Meissner, 632, Curitiba 80.210-170, Paraná, Brazil
| | - Iara José de Messias Reason
- Graduate Program in Internal Medicine, and Health Sciences, Federal University of Paraná (UFPR), R. Padre Camargo, 280, Curitiba 80.069-900, Paraná, Brazil; (C.D.P.); (M.A.B.d.S.); (I.J.d.M.R.)
- Department of Medical Pathology, Clinical Hospital, Federal University of Paraná (UFPR), R. Padre Camargo, 280, Curitiba 80.069-900, Paraná, Brazil
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Yuca H, Karadayı M, Karakaya S, Civaş A, Tekman E, Guvenalp Z. Phytochemical Analysis and Evaluation of Genotoxic, Antigenotoxic Effects in Bacterial Models, and Hypoglycemic Activity of Epilobium angustifolium L. with Bioguided Isolation of Active Compounds. Chem Biodivers 2023; 20:e202300922. [PMID: 37997279 DOI: 10.1002/cbdv.202300922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 11/13/2023] [Accepted: 11/22/2023] [Indexed: 11/25/2023]
Abstract
This study examined the effects of methanol extract and its sub-extracts from Epilobium angustifolium on α-glucosidase and α-amylase activity. Secondary metabolites and amino acids were quantified using LC-MS/MS. Dichloromethane sub-extract displayed the highest activity and was chosen for further investigation. Despite the widespread use of E. angustifolium, genotoxicity studies were conducted to assess its safety. Dichloromethane significantly inhibited α-glucosidase (IC50 =17.340 μg/mL), making it approximately 293 times more effective than acarbose. Six known compounds, including gallic acid (1), a mixture of quercetin-3-O-α-galactoside (2a) and quercetin-3-O-α-glucoside (2b), quercetin-3-O-α-glucuronic acid (3), quercetin-3-O-α-rhamnoside (4), and kaempferol-3-O-α-rhamnoside (5) were identified. Quercetin-3-O-α-rhamnoside exhibited the highest inhibition of α-glucosidase (IC50 =1735±85 μM), making it 3.70 times more effective than acarbose. Dichloromethane also showed significant antigenotoxic activity against mutagenesis induced by NaN3, 9-AA, 4-NPD, and MNNG. Gallic acid was found in the highest abundance (13253.6931 ng/mL) in the methanolic extract. Furthermore, L-Aspartic acid was the most concentrated amino acid (363.5620 nmol/mL) in the methanolic extract.
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Affiliation(s)
- Hafize Yuca
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
- Medicinal and Aromatic Plant and Drug Research Center, Ataturk University, Erzurum, Turkey
| | - Mehmet Karadayı
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Turkey
| | - Songül Karakaya
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Ayşe Civaş
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
- Department of Pharmacy and Pharmaceutical Services, Igdir University, Igdir, Turkey
| | - Enes Tekman
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
| | - Zuhal Guvenalp
- Department of Pharmacognosy, Faculty of Pharmacy, Ataturk University, Erzurum, Turkey
- Medicinal and Aromatic Plant and Drug Research Center, Ataturk University, Erzurum, Turkey
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Niisato N, Marunaka Y. Therapeutic potential of multifunctional myricetin for treatment of type 2 diabetes mellitus. Front Nutr 2023; 10:1175660. [PMID: 37305094 PMCID: PMC10251146 DOI: 10.3389/fnut.2023.1175660] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/02/2023] [Indexed: 06/13/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a metabolic disorder characterized by chronic hyperglycemia, insulin resistance, and insufficient insulin secretion. It is considered that chronic hyperglycemia causes serious problems due to diabetic complications such as retinopathy, nephropathy, and neuropathy. Primarily, treatment in T2DM is pharmacologically tried by using drugs that are insulin sensitizers, insulin secretagogues, α-glucosidase inhibitors, and glucose transporter inhibitors. However, long-term application of these drugs frequently induces various harmful side effects, suggesting that the importance of taking advantage of natural products like phytochemicals. Accordingly, flavonoids, a group of phytochemicals, have attracted attention as components of natural products which are effective in the treatment of several diseases containing T2DM and are strongly recommended as food supplements to ameliorate T2DM-related complications. Several well-studied flavonoids such as quercetin and catechin are known to have anti-diabetic, anti-obesity, and anti-hypertensive actions, although a huge number of flavonoids are still under investigation and their actions are not fully understood. In this situation, myricetin is being shown to be a multiple bioactive compound to prevent and/or suppress hyperglycemia through inhibiting digestion and uptake of saccharides and enhancing insulin secretion as a possible GLP-1 receptor agonist, and to ameliorate T2DM-related complications by protecting endothelial cells from oxidative stress induced by hyperglycemia. In this review, we summarize the multiple effects of myricetin on the targets of T2DM treatment, comparing with different flavonoids.
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Affiliation(s)
- Naomi Niisato
- Department of Health and Sports Sciences, Faculty of Health and Medical Sciences, Kyoto University of Advanced Science, Kameoka, Japan
- Medical Research Institute, Kyoto Industrial Health Association, Kyoto, Japan
| | - Yoshinori Marunaka
- Medical Research Institute, Kyoto Industrial Health Association, Kyoto, Japan
- Research Unit for Epithelial Physiology, Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, Japan
- Kyoto Prefectural University of Medicine Graduate School of Medical Science, Kyoto, Japan
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Oliveira ESC, Acho LDR, Morales-Gamba RD, do Rosário AS, Barcellos JFM, Lima ES, Machado MB. Hypoglycemic effect of the dry leaf extract of Myrcia multiflora in streptozotocin-induced diabetic mice. JOURNAL OF ETHNOPHARMACOLOGY 2023; 307:116241. [PMID: 36754187 DOI: 10.1016/j.jep.2023.116241] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 01/06/2023] [Accepted: 02/02/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Myrcia multiflora (Lam) DC. is a medicinal plant used in folk medicine for diabetes control, mainly in the Brazilian Amazon. The leaves of this species has already demonstrated antidiabetic properties; however, in mice with type 2 diabetes (DM2), the cumulative effect of the consumption of the dry extract of M. multiflora leaves (Mm) has not yet been reported. AIM OF THE STUDY To investigate the effect of the dry extract obtained from the infusion of the dried leaves of M. multiflora on the blood glucose levels of diabetic mice. MATERIALS AND METHODS DM2 was induced in Swiss male mice by a single intraperitoneal injection of streptozotocin [150 mg/kg body weight (bw)]. The animals were divided into two control groups (healthy and diabetic without treatment) and three sample groups that received Mm (25 and 50 mg/kg bw) and acarbose (200 mg/kg bw) by gavage once daily for 28 days (D28). Additionally, biochemical parameters, thiobarbituric acid reactive species (TBARS) levels in the liver, and histopathological analyses of the kidneys and liver were performed. RESULTS On the seventh day of treatment, a 74.7% reduction in glucose levels were observed in the group of diabetic animals treated with Mm (50 mg/kg bw) when compared to the beginning of the treatment. At D28, the hypoglycemic effect was maintained. The results of the biochemical and histopathological parameters and the TBARS levels suggest that this dry extract exerts nephro- and hepatoprotective effects. CONCLUSIONS The findings demonstrate the potential that this extract has to inhibit the α-glucosidase enzyme, and it acts similarly to the positive control acarbose. Furthermore, this extract is nephro- and hepatoprotective. Therefore, this dry extract has the potential to be an adjuvant for DM2, which corroborates its use in folk medicine.
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Affiliation(s)
- Edinilze S C Oliveira
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal Do Amazonas, Manaus, Amazonas, Brazil
| | - Leonard D R Acho
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal Do Amazonas Manaus, Amazonas, Brazil
| | - Ruben Dario Morales-Gamba
- Programa de Pós-graduação Em Zoologia, Instituto de Ciências Biológicas, Universidade Federal Do Amazonas, Manaus, Amazonas, Brazil
| | - Alessandro S do Rosário
- Engenharia Florestal, Campus Paragominas, Universidade Federal Rural da Amazônia, Paragominas, Pará, Brazil
| | - José Fernando M Barcellos
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal Do Amazonas, Manaus, Amazonas, Brazil
| | - Emerson S Lima
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal Do Amazonas Manaus, Amazonas, Brazil
| | - Marcos B Machado
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal Do Amazonas, Manaus, Amazonas, Brazil.
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Qin Y, Chen X, Xu F, Gu C, Zhu K, Zhang Y, Wu G, Wang P, Tan L. Effects of hydroxylation at C3' on the B ring and diglycosylation at C3 on the C ring on flavonols inhibition of α-glucosidase activity. Food Chem 2023; 406:135057. [PMID: 36459800 DOI: 10.1016/j.foodchem.2022.135057] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/12/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
The structure-activity relationship and inhibitory mechanism of flavonols on α-glucosidase were studied by inhibition kinetics, multispectral study, and molecular docking. The flavonols of rutin, quercetin and kaempferol effectively inhibit the activity of α-glucosidase, among which quercetin and rutin showed the strongest and weakest inhibitory abilities, respectively. The inhibitory ability of flavonols was enhanced by hydroxylation at C3' of B ring, while it was weakened by diglycosylation at C3 of C ring. Remarkably, the quenching affinity and inhibitory ability of flavonols were inconsistent, which was different from the conclusions reported by some previous studies. This may be ascribed to the hydroxyl groups of C3' of B ring and C3 of C ring. Furthermore, three flavonols were spontaneously bound to α-glucosidase through hydrophobic interactions and hydrogen bonding, which caused the structure and hydrophobic microenvironment of α-glucosidase to change, resulting in significant inhibition of α-glucosidase by flavonols.
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Affiliation(s)
- Yajuan Qin
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning 571533, Hainan, China; School of Forest, Northeast Forestry University, Haerbin 150040, Heilongjiang, China; National Center of Important Tropical Crops Engineering and Technology Research, Wanning 571533, Hainan, China; Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, Hainan, China
| | - Xiaoai Chen
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning 571533, Hainan, China; National Center of Important Tropical Crops Engineering and Technology Research, Wanning 571533, Hainan, China; Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, Hainan, China
| | - Fei Xu
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning 571533, Hainan, China; National Center of Important Tropical Crops Engineering and Technology Research, Wanning 571533, Hainan, China; Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, Hainan, China
| | - Chunhe Gu
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning 571533, Hainan, China; National Center of Important Tropical Crops Engineering and Technology Research, Wanning 571533, Hainan, China; Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, Hainan, China
| | - Kexue Zhu
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning 571533, Hainan, China; National Center of Important Tropical Crops Engineering and Technology Research, Wanning 571533, Hainan, China; Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, Hainan, China
| | - Yanjun Zhang
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning 571533, Hainan, China; National Center of Important Tropical Crops Engineering and Technology Research, Wanning 571533, Hainan, China; Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, Hainan, China.
| | - Gang Wu
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning 571533, Hainan, China; National Center of Important Tropical Crops Engineering and Technology Research, Wanning 571533, Hainan, China; Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, Hainan, China
| | - Ping Wang
- School of Forest, Northeast Forestry University, Haerbin 150040, Heilongjiang, China.
| | - Lehe Tan
- Spice and Beverage Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wanning 571533, Hainan, China; National Center of Important Tropical Crops Engineering and Technology Research, Wanning 571533, Hainan, China; Key Laboratory of Processing Suitability and Quality Control of the Special Tropical Crops of Hainan Province, Wanning 571533, Hainan, China.
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Romeiras MM, Essoh AP, Catarino S, Silva J, Lima K, Varela E, Moura M, Gomes I, Duarte MC, Duarte MP. Diversity and biological activities of medicinal plants of Santiago island (Cabo Verde). Heliyon 2023; 9:e14651. [PMID: 37009246 PMCID: PMC10060590 DOI: 10.1016/j.heliyon.2023.e14651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 03/08/2023] [Accepted: 03/15/2023] [Indexed: 03/28/2023] Open
Abstract
Plants continue to constitute key elements of medical practice in West African countries. The Cabo Verde archipelago hosts a great diversity of medicinal plants and local markets are considered important sites for trading plants harvested by rural communities. This study has two main goals: (i) to assess the medicinal uses of native species in Santiago, the biggest island of the archipelago, and (ii) to evaluate the antioxidant, antimicrobial and antidiabetic/antihyperglycemic activities of two native trees (Tamarix senegalensis and Sideroxylon marginatum) used in traditional medicine and traded in local markets. Our results revealed that on Santiago Island, 24 native plants are used in traditional medicine. The main uses of these species (e.g., forage, timber, food and fibres), their medicinal applications, the plant parts used, their mode of administration and conservation status are presented here for the first time. Moreover, the pharmacological characterization of two native tree species revealed that hydroethanolic extracts were richer in phenolic compounds and more active than their aqueous counterparts. All the studied extracts revealed significant antioxidant properties (DPPH and FRAP assays) and were generally moderately active against Gram-positive bacteria. All the extracts inhibited the activities of the carbohydrate digestive enzymes α-glucosidase and α-amylase in a dose-dependent manner. For α-glucosidase, the detected inhibitory activity (IC50 values from 2.0 ± 0.2 μg/mL to 9.9 ± 1.2 μg/mL) was significantly higher than that of acarbose, suggesting that extracts of both species can delay glucose absorption, thereby assisting in slowing down the progression of diabetes. Our findings highlight the crucial importance that medicinal plants have for the Cabo Verdean population, while also raising awareness on the need for sustainable use and conservation of native flora, and of tree species traded in local markets in particular.
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Rashid MM, Rahman MA, Islam MS, Hossen MA, Ahmed AMA, Afroze M, Habib AH, Mansoury MMS, Alharbi HF, Algheshairy RM, Alelwani W, Alnajeebi AM, Tangpong J, Saha S, Qadhi A, Azhar W. Natural Compounds of Lasia spinosa (L.) Stem Potentiate Antidiabetic Actions by Regulating Diabetes and Diabetes-Related Biochemical and Cellular Indexes. Pharmaceuticals (Basel) 2022; 15:ph15121466. [PMID: 36558918 PMCID: PMC9781412 DOI: 10.3390/ph15121466] [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: 11/09/2022] [Revised: 11/18/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
Natural biometabolites of plants have been reported to be useful in chronic diseases including diabetes and associated complications. This research is aimed to investigate how the biometabolites of Lasia spinosa methanol stem (MEXLS) extract ameliorative diabetes and diabetes-related complications. MEXLS was examined for in vitro antioxidant and in vivo antidiabetic effects in a streptozotocin-induced diabetes model, and its chemical profiling was done by gas chromatography-mass spectrometry analysis. The results were verified by histopathological examination and in silico ligand-receptor interaction of characterized natural biometabolites with antidiabetic receptor proteins AMPK (PDB ID: 4CFH); PPARγ (PDB ID: 3G9E); and mammalian α-amylase center (PDB ID: 1PPI). The MEXLS was found to show a remarkable α-amylase inhibition (47.45%), strong antioxidant action, and significant (p < 0.05) decrease in blood glucose level, serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), low-density lipoprotein (LDL), urea, uric acid, creatinine, total cholesterol, triglyceride (TG), liver glycogen, creatinine kinase (CK-MB), and lactate dehydrogenase (LDH) and increase in serum insulin, glucose tolerance, and high-density lipoprotein (HDL). Rat’s pancreas and kidney tissues were found to be partially recovered in histopathological analyses. Methyl α-d-galactopyranoside displayed the highest binding affinity with AMPK (docking score, −5.764), PPARγ (docking score, −5.218), and 1PPI (docking score, −5.615) receptors. Data suggest that the MEXLS may be an exciting source to potentiate antidiabetic activities affirming a cell-line study.
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Affiliation(s)
- Md. Mamunur Rashid
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong 4331, Bangladesh
| | - Md. Atiar Rahman
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong 4331, Bangladesh
- School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80160, Thailand
- Correspondence: ; Tel.: +88-031-2606001-10 (ext. 4334); Fax: +88-031-726310
| | - Md. Shahidul Islam
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong 4331, Bangladesh
| | - Md. Amjad Hossen
- Department of Pharmacy, Faculty of Science and Engineering, International Islamic University Chittagong, Chittagong 4318, Bangladesh
| | - A. M. Abu Ahmed
- Department of Genetic Engineering and Biotechnology, University of Chittagong, Chittagong 4331, Bangladesh
| | - Mirola Afroze
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Dr. Qudrat-e-Khuda Road (Laboratory Road), Dhanmondi, Dhaka 1205, Bangladesh
| | - Alaa H. Habib
- Department of Physiology, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Manal M. S. Mansoury
- Department of Physiology, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hend F. Alharbi
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Reham M. Algheshairy
- Department of Food Science and Human Nutrition, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah 51452, Saudi Arabia
| | - Walla Alelwani
- Department of Biochemistry, Collage of Science, University of Jeddah, Jeddah 80203, Saudi Arabia
| | - Afnan M. Alnajeebi
- Department of Biochemistry, Collage of Science, University of Jeddah, Jeddah 80203, Saudi Arabia
| | - Jitbanjong Tangpong
- School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Srabonti Saha
- Department of Biochemistry and Molecular Biology, University of Chittagong, Chittagong 4331, Bangladesh
| | - Alaa Qadhi
- Clinical Nutrition Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, P.O. Box 715, Makkah 21955, Saudi Arabia
| | - Wedad Azhar
- Clinical Nutrition Department, Faculty of Applied Medical Sciences, Umm Al-Qura University, P.O. Box 715, Makkah 21955, Saudi Arabia
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Miller N, Joubert E. Critical Assessment of In Vitro Screening of α-Glucosidase Inhibitors from Plants with Acarbose as a Reference Standard. PLANTA MEDICA 2022; 88:1078-1091. [PMID: 34662924 DOI: 10.1055/a-1557-7379] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Postprandial hyperglycemia is treated with the oral antidiabetic drug acarbose, an intestinal α-glucosidase inhibitor. Side effects of acarbose motivated a growing number of screening studies to identify novel α-glucosidase inhibitors derived from plant extracts and other natural sources. As "gold standard", acarbose is frequently included as the reference standard to assess the potency of these candidate α-glucosidase inhibitors, with many outperforming acarbose by several orders of magnitude. The results are subsequently used to identify suitable compounds/products with strong potential for in vivo efficacy. However, most α-glucosidase inhibitor screening studies use enzyme preparations obtained from nonmammalian sources (typically Saccharomyces cerevisiae), despite strong evidence that inhibition data obtained using nonmammalian α-glucosidase may hold limited value in terms of identifying α-glucosidase inhibitors with actual in vivo hypoglycemic potential. The aim was to critically discuss the screening of novel α-glucosidase inhibitors from plant sources, emphasizing inconsistencies and pitfalls, specifically where acarbose was included as the reference standard. An assessment of the available literature emphasized the cruciality of stating the biological source of α-glucosidase in such screening studies to allow for unambiguous and rational interpretation of the data. The review also highlights the lack of a universally adopted screening assay for novel α-glucosidase inhibitors and the commercial availability of a standardized preparation of mammalian α-glucosidase.
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Affiliation(s)
- Neil Miller
- Department of Food Science, Stellenbosch University, South Africa
- Plant Bioactives Group, Post-Harvest & Agro-Processing Technologies, Agricultural Research Council (ARC) Infruitec-Nietvoorbij, Stellenbosch, South Africa
| | - Elizabeth Joubert
- Department of Food Science, Stellenbosch University, South Africa
- Plant Bioactives Group, Post-Harvest & Agro-Processing Technologies, Agricultural Research Council (ARC) Infruitec-Nietvoorbij, Stellenbosch, South Africa
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11
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Anwar S, Faisal Nadeem M, Pervaiz I, Khurshid U, Akmal N, Aamir K, Haseeb ur Rehman M, Almansour K, Alshammari F, Shaikh MF, Locatelli M, Ahemad N, Saleem H. A comprehensive phytochemical, biological, and toxicological studies of roots and aerial parts of Crotalaria burhia Buch.-Ham: An important medicinal plant. FRONTIERS IN PLANT SCIENCE 2022; 13:988352. [PMID: 36212347 PMCID: PMC9533709 DOI: 10.3389/fpls.2022.988352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 07/28/2022] [Indexed: 06/16/2023]
Abstract
This study was designed to seek the phytochemical analysis, antioxidant, enzyme inhibition, and toxicity potentials of methanol and dichloromethane (DCM) extracts of aerial and root parts of Crotalaria burhia. Total bioactive content, high-performance liquid chromatography-photodiode array detector (HPLC-PDA) polyphenolic quantification, and ultra-high performance liquid chromatography-mass spectrometry (UHPLC-MS) analysis were utilized to evaluate the phytochemical composition. Antioxidant [including 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH)], 2,2'-azino-bis[3-ethylbenzothiazoline-6-sulfonic acid (ABTS), ferric reducing antioxidant power assay (FRAP), cupric reducing antioxidant capacity CUPRAC, phosphomolybdenum, and metal chelation assays] and enzyme inhibition [against acetylcholinesterase (AChE), butyrylcholinesterase (BChE), α-glucosidase, α-amylase, and tyrosinase] assays were carried out for biological evaluation. The cytotoxicity was tested against MCF-7 and MDA-MB-231 breast cell lines. The root-methanol extract contained the highest levels of phenolics (37.69 mg gallic acid equivalent/g extract) and flavonoids (83.0 mg quercetin equivalent/g extract) contents, and was also the most active for DPPH (50.04 mg Trolox equivalent/g extract) and CUPRAC (139.96 mg Trolox equivalent /g extract) antioxidant assays. Likewise, the aerial-methanol extract exhibited maximum activity for ABTS (94.05 mg Trolox equivalent/g extract) and FRAP (64.23 mg Trolox equivalent/g extract) assays. The aerial-DCM extract was noted to be a convincing cholinesterase (AChE; 4.01 and BChE; 4.28 mg galantamine equivalent/g extract), and α-glucosidase inhibitor (1.92 mmol acarbose equivalent/g extract). All of the extracts exhibited weak to modest toxicity against the tested cell lines. A considerable quantities of gallic acid, catechin, 4-OH benzoic acid, syringic acid, vanillic acid, 3-OH-4-MeO benzaldehyde, epicatechin, p-coumaric acid, rutin, naringenin, and carvacrol were quantified via HPLC-PDA analysis. UHPLC-MS analysis of methanolic extracts from roots and aerial parts revealed the tentative identification of important phytoconstituents such as polyphenols, saponins, flavonoids, and glycoside derivatives. To conclude, this plant could be considered a promising source of origin for bioactive compounds with several therapeutic uses.
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Affiliation(s)
- Sirajudheen Anwar
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Hail, Hail, Saudi Arabia
| | - Muhammad Faisal Nadeem
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
| | - Irfan Pervaiz
- Department of Pharmacy, The University of Chenab, Gujrat, Pakistan
| | - Umair Khurshid
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Nimra Akmal
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Khurram Aamir
- Akhtar Saeed College of Pharmacy, Canal Campus, Lahore, Pakistan
| | - Muhammad Haseeb ur Rehman
- Akhtar Saeed College of Pharmacy, Canal Campus, Lahore, Pakistan
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Khaled Almansour
- Department of Pharmaceutics, College of Pharmacy, University of Hail, Hail, Saudi Arabia
| | - Farhan Alshammari
- Department of Pharmaceutics, College of Pharmacy, University of Hail, Hail, Saudi Arabia
| | - Mohd Farooq Shaikh
- Jeffrey Cheah School of Medicine and Health Sciences, Neuropharmacology Research Laboratory, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - Marcello Locatelli
- Department of Pharmacy, University “G. d’Annunzio” of Chieti-Pescara, Chieti, Italy
| | - Nafees Ahemad
- School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor, Malaysia
| | - Hammad Saleem
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary and Animal Sciences (UVAS), Lahore, Pakistan
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12
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Oliveira ESC, Acho LDR, da Silva BJP, Morales-Gamba RD, Pontes FLD, do Rosário AS, Bezerra JDA, Campos FR, Barcellos JFM, Lima ES, Machado MB. Hypoglycemic effect and toxicity of the dry extract of Eugenia biflora (L.) DC. leaves. JOURNAL OF ETHNOPHARMACOLOGY 2022; 293:115276. [PMID: 35421528 DOI: 10.1016/j.jep.2022.115276] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/25/2022] [Accepted: 04/05/2022] [Indexed: 06/14/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaves of Eugenia biflora (Myrtaceae) are traditionally used by Amazonian populations for the control of diabetes. However, their chemical composition has not yet been described and pharmacological evidence has not been reported. OBJECTIVE This study aimed to identify the chemical constituents and evaluate the hypoglycemic and toxic effect of the dry extract of the E. biflora leaves (DEEB). MATERIALS AND METHODS DEEB, obtained by infusion, was analyzed using LC-HRMS and NMR, whose the catechin flavonoid was quantified using NMR. The antidiabetic effect of DEEB was evaluated according to its inhibition of the enzymes α-amylase and α-glucosidase, as well as the content of total phenols, free radical scavengingand antiglycation activities, and its in vitro cell viability. Oral maltose tolerance and chronic multiple dose tests (28 days) in streptozotocin-induced diabetic mice (STZ) were performed. The hypoglycemic effect and toxicity of this extract were evaluated in the multiple dose assay. Biochemical parameters, hemolysis, and levels of the thiobarbituric acid reactive species in the liver were investigated and histopathological analyses of the kidneys and liver were performed. RESULTS Eight phenolic compounds were identified, with catechin (15.5 ± 1.7 mg g-1) being the majority compound and a possible chemical marker of DEEB. The extract showed inhibition activity of the enzyme α-glucosidase. Chronic administration of DEEB (50 mg/kg of body weight) reduced glucose levels in diabetic animals, similar to acarbose; however, DEEB (100 and 200 mg/kg bw) caused premature death of mice by D22 of the treatment. Our data indicate that one of the mechanisms of toxicity in DEEB may be related to the aggravation of oxidative stress in the liver. This histopathological study indicated that DEEB failed to minimize the progression of the toxicity of diabetes caused by STZ. CONCLUSIONS This study demonstrated the hypoglycemic potential of E. biflora leaves. However, the prolonged use of this tea can be harmful to its users due to its considerable toxicity, which needs to be better investigated.
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Affiliation(s)
- Edinilze S C Oliveira
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Leonard D R Acho
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas Manaus, Amazonas, Brazil
| | - Bárbara Janaína P da Silva
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas Manaus, Amazonas, Brazil
| | - Ruben Dario Morales-Gamba
- Programa de Pós-graduação em Zoologia, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Flávia L D Pontes
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Alessandro S do Rosário
- Engenharia Florestal, Campus Paragominas, Universidade Federal Rural da Amazônia, Paragominas, Pará, Brazil
| | - Jaqueline de A Bezerra
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil; Departamento de Química, Ambiente e Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Amazonas, Manaus, Amazonas, Brazil
| | - Francinete R Campos
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil; Departamento de Farmácia, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - José Fernando M Barcellos
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Emerson S Lima
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas Manaus, Amazonas, Brazil
| | - Marcos B Machado
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil.
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13
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Singular Olive Oils from a Recently Discovered Spanish North-Western Cultivar: An Exhaustive 3-Year Study of Their Chemical Composition and In-Vitro Antidiabetic Potential. Antioxidants (Basel) 2022; 11:antiox11071233. [PMID: 35883723 PMCID: PMC9311737 DOI: 10.3390/antiox11071233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/17/2022] [Accepted: 06/20/2022] [Indexed: 12/10/2022] Open
Abstract
In this work, the quality and physicochemical parameters, phenolic composition, and antidiabetic potential of olive oils obtained from olives belonging to centenarian olive trees of the so-called ‘Mansa de Figueiredo’ cultivar were evaluated during three consecutive crop seasons (2017–2019). The oils produced during the three crop years were classified as extra virgin based on the quality-related indices, sensory analysis, and the genuineness-related parameters. In addition, LC-ESI-TOF MS was used to get a comprehensive characterisation of the phenolic fraction while LC-ESI-IT MS was applied for quantitation purposes. The content of phenolic compounds (ranging from 1837 to 2434 mg/kg) was significantly affected by the harvest year due to the environmental conditions and ripening index. Furthermore, although significant differences in the inhibitory effects against the α-glucosidase enzyme for the EVOOs extracted throughout the three successive years were detected, all the studied EVOOs exhibited a stronger inhibitor effect than that found for acarbose.
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14
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Oboh G, Ogunbadejo MD, Ogunsuyi OB, Oyeleye SI. Can gallic acid potentiate the antihyperglycemic effect of acarbose and metformin? Evidence from streptozotocin-induced diabetic rat model. Arch Physiol Biochem 2022; 128:619-627. [PMID: 31979987 DOI: 10.1080/13813455.2020.1716014] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This study investigated the influence of dietary phenolic acid- Gallic acid (GA) on the antihyperglycemic properties of acarbose (ACA) and metformin (MET). Streptozotocin-induced diabetic rats were treated (p.o) with ACA, MET, GA and their combinations for 14 days. The effects of the treatments on blood glucose and insulin levels, pancreas α-amylase and intestinal α-glucosidase activities, as well as thiobarbituric acid reactive species (TBARS), thiol and reactive oxygen species (ROS) levels, including antioxidant enzyme activities were investigated. A significant increase in blood glucose, insulin, ROS and TBARS levels, and impaired antioxidant status, as well as elevation in the activities of α-amylase and α-glucosidase observed in diabetic rats were ameliorated in the treatment groups. Hpwever, GA had varying effects on the antidiabetic properties of the drugs. Nevertheless, GA showed more potentiating effects on the antidiabetic effect of MET and these effects were better observed at the lower dose of GA.
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Affiliation(s)
- Ganiyu Oboh
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria
| | - Mariam Damilola Ogunbadejo
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria
| | - Opeyemi Babatunde Ogunsuyi
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria
- Biomedical Technology Department, Federal University of Technology, Akure, Nigeria
| | - Sunday Idowu Oyeleye
- Functional Foods and Nutraceuticals Unit, Department of Biochemistry, Federal University of Technology, Akure, Nigeria
- Biomedical Technology Department, Federal University of Technology, Akure, Nigeria
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15
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Apple Fibers as Carriers of Blackberry Juice Polyphenols: Development of Natural Functional Food Additives. Molecules 2022; 27:molecules27093029. [PMID: 35566379 PMCID: PMC9101031 DOI: 10.3390/molecules27093029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/06/2022] [Accepted: 05/07/2022] [Indexed: 12/11/2022] Open
Abstract
Blackberry polyphenols possess various health-promoting properties. Since they are very sensitive to environmental conditions such as the presence of light, oxygen and high temperatures, the application of such compounds is restricted. Fibers are recognized as efficient carriers of polyphenols and are often used in polyphenols encapsulation. In the present study, the ability of apple fiber to adsorb blackberry juice polyphenols was examined. Freeze-dried apple fiber/blackberry juice complexes were prepared with different amounts of fibers (1%, 2%, 4%, 6%, 8% and 10%) and a constant amount of blackberry juice. Polyphenol profile, antioxidant activity, inhibition of the α-amylase, color parameters, as well as the IR spectra, of the obtained complexes were assessed. The results showed a negative effect of higher amounts of fiber (more than 2%) on the adsorption of polyphenols and the antioxidant activity of complexes. With the proper formulation, apple fibers can serve as polyphenol carriers, and thus the application as novel food additives can be considered.
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Santana Andrade JK, Chagas Barros RG, Pereira UC, Nogueira JP, Gualberto NC, Santos de Oliveira C, Shanmugam S, Narain N. Bioaccessibility of bioactive compounds after in vitro gastrointestinal digestion and probiotics fermentation of Brazilian fruits residues with antioxidant and antidiabetic potential. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2021.112469] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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17
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Zhao Y, Wang M, Zhang J, Xiong C, Huang G. The mechanism of delaying starch digestion by luteolin. Food Funct 2021; 12:11862-11871. [PMID: 34734615 DOI: 10.1039/d1fo02173g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, the mechanisms of the delay of starch digestion by luteolin were revealed by studying the luteolin-PPA (porcine pancreatic α-amylase) interaction and luteolin-starch interaction. The luteolin-PPA interaction was investigated by inhibitory kinetics analysis, fluorescence quenching, circular dichroism (CD), Fourier transform infrared (FT-IR) spectroscopy and molecular docking. The results of the inhibitory kinetics revealed that luteolin was a mixed-type inhibitor of PPA and that the inhibitory action was reversible. Fluorescence spectroscopy (including fluorescence quenching and thermodynamics) and molecular docking analyses indicated that hydrogen bonds and hydrophobic forces were the main forces between PPA and luteolin. CD and FT-IR spectroscopy analyses showed that the interaction between luteolin and PPA changed the secondary structure of PPA and induced a decline in its activity. In addition, the luteolin-starch interaction was also studied using UV-visible absorption and X-ray diffraction analyses. These indicated that luteolin could bind with PPA, and that hydrogen bonds and van der Waals forces may be present. Overall, luteolin delayed starch digestion not only by binding with PPA but also by binding with starch. Thus, luteolin has the potential to prevent and control diabetes by being added into starch-based food to delay starch digestion.
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Affiliation(s)
- Yiling Zhao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Ming Wang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Jinsheng Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Chunhong Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
| | - Ganhui Huang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China.
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Antioxidant and Starch-Hydrolyzing Enzymes Inhibitory Properties of Striga-Resistant Yellow-Orange Maize Hybrids. Molecules 2021; 26:molecules26226874. [PMID: 34833966 PMCID: PMC8617639 DOI: 10.3390/molecules26226874] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022] Open
Abstract
Most of the health benefits derived from cereals are attributed to their bioactive compounds. This study evaluated the levels of the bioactive compounds, and the antioxidant and starch-hydrolyzing enzymes inhibitory properties of six pipeline Striga-resistant yellow-orange maize hybrids (coded AS1828-1, 4, 6, 8, 9, 11) in vitro. The maize hybrids were grown at the International Institute of Tropical Agriculture (IITA), Nigeria. The bioactive compounds (total phenolics, tannins, flavonoids, and phytate) levels, antioxidant (DPPH• and ABTS•+ scavenging capacity and reducing power) and starch-hydrolyzing enzymes (α-amylase and α-glucosidase) inhibitory activities of the maize hybrids were determined by spectrophotometry. At the same time, carotenoids were quantified using a reverse-phase HPLC system. The ranges of the bioactive compounds were: 11.25-14.14 mg GAE/g (total phenolics), 3.62-4.67 mg QE/g (total flavonoids), 3.63-6.29 mg/g (tannins), 3.66-4.31% (phytate), 8.92-12.11 µg/g (total xanthophylls), 2.42-2.89 µg/g (total β-carotene), and 3.17-3.77 µg/g (total provitamin A carotenoids). Extracts of the maize hybrids scavenged DPPH• (SC50: 9.07-26.35 mg/mL) and ABTS•+ (2.65-7.68 TEAC mmol/g), reduced Fe3+ to Fe2+ (0.25 ± 0.64-0.43 ± 0.01 mg GAE/g), and inhibited α-amylase and α-glucosidase, with IC50 ranges of 26.28-52.55 mg/mL and 47.72-63.98 mg/mL, respectively. Among the six clones of the maize hybrids, AS1828-9 had the highest (p < 0.05) levels of tannins and phytate and the strongest antioxidant and starch-hydrolyzing enzymes inhibitory activities. Significant correlations were observed between total phenolics and the following: ABTS•+ (p < 0.01, r = 0.757), DPPH• SC50 (p < 0.01, r = -0.867), reducing power (p < 0.05, r = 0.633), α-amylase IC50 (p < 0.01, r = -0.836) and α-glucosidase IC50 (p < 0.05, r = -0.582). Hence, the Striga-resistant yellow-orange maize hybrids (especially AS1828-9) may be beneficial for alleviating oxidative stress and postprandial hyperglycemia.
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19
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Barber E, Houghton MJ, Williamson G. Flavonoids as Human Intestinal α-Glucosidase Inhibitors. Foods 2021; 10:foods10081939. [PMID: 34441720 PMCID: PMC8392382 DOI: 10.3390/foods10081939] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/13/2021] [Accepted: 08/16/2021] [Indexed: 12/15/2022] Open
Abstract
Certain flavonoids can influence glucose metabolism by inhibiting enzymes involved in carbohydrate digestion and suppressing intestinal glucose absorption. In this study, four structurally-related flavonols (quercetin, kaempferol, quercetagetin and galangin) were evaluated individually for their ability to inhibit human α-glucosidases (sucrase, maltase and isomaltase), and were compared with the antidiabetic drug acarbose and the flavan-3-ol(−)-epigallocatechin-3-gallate (EGCG). Cell-free extracts from human intestinal Caco-2/TC7 cells were used as the enzyme source and products were quantified chromatographically with high accuracy, precision and sensitivity. Acarbose inhibited sucrase, maltase and isomaltase with IC50 values of 1.65, 13.9 and 39.1 µM, respectively. A similar inhibition pattern, but with comparatively higher values, was observed with EGCG. Of the flavonols, quercetagetin was the strongest inhibitor of α-glucosidases, with inhibition constants approaching those of acarbose, followed by galangin and kaempferol, while the weakest were quercetin and EGCG. The varied inhibitory effects of flavonols against human α-glucosidases depend on their structures, the enzyme source and substrates employed. The flavonols were more effective than EGCG, but less so than acarbose, and so may be useful in regulating sugar digestion and postprandial glycaemia without the side effects associated with acarbose treatment.
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Mineral Content, Chemical Analysis, In Vitro Antidiabetic and Antioxidant Activities, and Antibacterial Power of Aqueous and Organic Extracts of Moroccan Leopoldia comosa (L.) Parl. Bulbs. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:9932291. [PMID: 34335845 PMCID: PMC8324349 DOI: 10.1155/2021/9932291] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/20/2021] [Accepted: 06/30/2021] [Indexed: 02/07/2023]
Abstract
Medicinal plants are a rich source of bioactive phytochemicals or bionutrients. Studies carried out during the past few decades have shown that these phytochemicals play an important role in preventing metabolic diseases such as cancer and diabetes. The present study was dedicated to the analysis of mineral and chemical composition and evaluation of antidiabetic, antioxidant, and antibacterial properties of aqueous and organic extracts of Leopoldia comosa, a plant with a long history of therapeutic and food use. Mineral content was determined using inductively coupled plasma atomic emission spectroscopy. Chemical composition was carried out by extraction of essential oils, preparation of aqueous and organic extracts, and qualitative and quantitative analysis. The biological study consisted of the evaluation of antidiabetic activity by inhibition of three enzymes, antioxidant activity by five tests, and antibacterial activity by the disc diffusion method. The correlation between chemical composition and antidiabetic and antioxidant properties was explored by PCA. The results showed that L. comosa contains high levels of Fe, K, P, Na, Cu, Mg, and Ca with values, respectively, in the order of 33552, 1843.14, 756.36, 439.65, 303.9, 272.37, and 20.55 mg/kg. Quantitative analysis showed that the diethyl ether extract had the highest content of polyphenols (129.75 ± 0.29 µg GAE/mg E), flavonoids (988.26 ± 0.18 µg QE/mg E), and tannins (30.22 ± 0.15 µg CE/mg E). All extracts of L. comosa possess inhibitory activity of alpha-amylase, alpha-glucosidase, and beta-galactosidase enzymes, mainly the decocted and the acetone extract. The antioxidant results showed that organic extracts are more active than aqueous extracts especially diethyl ether extract which was similarly found to have an antibacterial effect on Listeria innocua and Proteus mirabilis. PCA allowed us to deduce that phenolic compounds, flavonoids, and tannins are strongly correlated with antioxidant and antidiabetic activity. L. comosa may have potential remedy in the prevention of metabolic disease.
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21
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Oliveira ESC, Pontes FLD, Acho LDR, do Rosário AS, da Silva BJP, de A Bezerra J, Campos FR, Lima ES, Machado MB. qNMR quantification of phenolic compounds in dry extract of Myrcia multiflora leaves and its antioxidant, anti-AGE, and enzymatic inhibition activities. J Pharm Biomed Anal 2021; 201:114109. [PMID: 33957365 DOI: 10.1016/j.jpba.2021.114109] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 04/24/2021] [Accepted: 04/26/2021] [Indexed: 01/08/2023]
Abstract
Myrcia multiflora (Lam.) DC. is often used in Brazilian folk medicine to control diabetes. Analysis using HPLC-HRMS and NMR of the dry extract from the infusion of leaves of this species revealed twelve phenolic compounds. Among these compounds, chlorogenic acid (1), 4-O-caffeoylquinic acid (2), corilagin (3), chebulagic acid (4), pedunculagin (5), quercetin-3-O-β-2″-galloylglucoside (7), and kaempferol-3-O-rhamnoside (12) are described for the first time in this matrix. Furthermore, six compounds were quantified using qNMR. The compounds in the dry extracts are 3, 6 (myricetin-3-O-d-glucoside), 8 (myricitrin), 9 (hyperoside), 10 (guaijaverin) and 11 (quercitrin). These compounds may be considered chemical markers in this matrix. In addition, this extract presents activities of α-glucosidase inhibition (IC50 = 79.9 μg mL-1) and glycation in vitro (IC50 = 10.2 μg mL-1), in addition to antioxidant activity against DPPH and ABTS radicals (1,856.7 and 1,032.0 μmol TEq, respectively). This extract did not show significant cytotoxicity in human fibroblasts. Therefore, the enzymatic inhibition, anti-AGE (advanced glycation end-products) and antioxidant activities of Myrcia multiflora leaves corroborated its antidiabetic therapeutic potential and instigates future preclinical studies aimed at the treatment of diabetes mellitus and its complications.
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Affiliation(s)
- Edinilze S C Oliveira
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil
| | - Flávia L D Pontes
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Leonard D R Acho
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas Manaus, Amazonas, Brazil
| | - Alessandro S do Rosário
- Engenharia Florestal, Campus Paragominas, Universidade Federal Rural da Amazônia, Paragominas, Pará, Brazil
| | - Bárbara Janaína P da Silva
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas Manaus, Amazonas, Brazil
| | - Jaqueline de A Bezerra
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil; Departamento de Química, Ambiente e Alimentos, Instituto Federal de Educação, Ciência e Tecnologia do Amazonas, Manaus, Amazonas, Brazil
| | - Francinete R Campos
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil; Departamento de Farmácia, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Emerson S Lima
- Laboratório de Atividade Biológica, Faculdade de Ciências Farmacêuticas, Universidade Federal do Amazonas Manaus, Amazonas, Brazil
| | - Marcos B Machado
- Núcleo de Estudos Químicos de Micromoléculas da Amazônia - NEQUIMA, Instituto de Ciências Exatas, Universidade Federal do Amazonas, Manaus, Amazonas, Brazil.
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22
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Fernández-Fernández AM, Dumay E, Lazennec F, Migues I, Heinzen H, Lema P, López-Pedemonte T, Medrano-Fernandez A. Antioxidant, Antidiabetic, and Antiobesity Properties, TC7-Cell Cytotoxicity and Uptake of Achyrocline satureioides (Marcela) Conventional and High Pressure-Assisted Extracts. Foods 2021; 10:foods10040893. [PMID: 33921665 PMCID: PMC8073586 DOI: 10.3390/foods10040893] [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: 03/03/2021] [Revised: 04/10/2021] [Accepted: 04/12/2021] [Indexed: 02/06/2023] Open
Abstract
The growing incidence of non-communicable diseases makes the search for natural sources of bioactive compounds a priority for such disease prevention/control. Achyrocline satureioides (‘marcela’), a plant rich in polyphenols and native to Brazil, Uruguay, Paraguay, and Argentina, could be used for this purpose. Data on its antidiabetic/antiobesity properties and cellular uptake of bioactive compounds are lacking. The potentiality of non-thermal technologies such as high-hydrostatic pressure (HP) to enhance polyphenol extraction retains attention. Thus, in the present study aqueous and ethanolic marcela extracts with/without assisted-HP processing were chemically characterized and assessed for their in vitro antioxidant capacity, antidiabetic and antiobesity activities, as well as cellular cytotoxicity and uptake on intestinal cell monolayers (TC7-cells, a clone of Caco-2 cells). Aqueous and ethanolic conventional extracts presented different polyphenolic profiles characterized mainly by phenolic acids or flavonoids, respectively, as stated by reverse phase-high-performance liquid chromatography (RP-HPLC) analyses. In general, ethanolic extracts presented the strongest bioactive properties and HP had none or a negative effect on in vitro bioactivities comparing to conventional extracts. TC7-cell viability and cellular uptake demonstrated in conventional and HP-assisted extracts, highlighted the biological effects of marcela bioactive compounds on TC7-cell monolayers. TC7-cell studies showed no HP-induced cytotoxicity. In sum, marcela extracts have great potential as functional ingredients for the prevention/treatment of chronic diseases such as diabetes.
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Affiliation(s)
- Adriana Maite Fernández-Fernández
- Departamento de Ciencia y Tecnología de Alimentos, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; (A.M.F.-F.); (T.L.-P.)
| | - Eliane Dumay
- Ingénierie des Agropolymères et Technologies Emergentes, Équipe de Biochimie et Technologie Alimentaires, Université de Montpellier, 2 Place Eugène Bataillon, 34095 Montpellier, France; (E.D.); (F.L.)
| | - Françoise Lazennec
- Ingénierie des Agropolymères et Technologies Emergentes, Équipe de Biochimie et Technologie Alimentaires, Université de Montpellier, 2 Place Eugène Bataillon, 34095 Montpellier, France; (E.D.); (F.L.)
| | - Ignacio Migues
- Departamento de Química Orgánica, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; (I.M.); (H.H.)
| | - Horacio Heinzen
- Departamento de Química Orgánica, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; (I.M.); (H.H.)
| | - Patricia Lema
- Grupo Tecnologías Aplicadas a la Ingeniería de Alimentos, Facultad de Ingeniería, Universidad de la República, Av Julio Herrera y Reissig 565, Montevideo 11300, Uruguay;
| | - Tomás López-Pedemonte
- Departamento de Ciencia y Tecnología de Alimentos, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; (A.M.F.-F.); (T.L.-P.)
| | - Alejandra Medrano-Fernandez
- Departamento de Ciencia y Tecnología de Alimentos, Facultad de Química, Universidad de la República, General Flores 2124, Montevideo 11800, Uruguay; (A.M.F.-F.); (T.L.-P.)
- Correspondence: ; Tel.: +598-2924-26-75
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Jiang C, Chen Y, Ye X, Wang L, Shao J, Jing H, Jiang C, Wang H, Ma C. Three flavanols delay starch digestion by inhibiting α-amylase and binding with starch. Int J Biol Macromol 2021; 172:503-514. [PMID: 33454330 DOI: 10.1016/j.ijbiomac.2021.01.070] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/12/2021] [Accepted: 01/12/2021] [Indexed: 11/17/2022]
Abstract
The study aimed to reveal the different mechanisms of delaying starch digestion by ECG, EGCG and Procyanidin based on the perspective of α-amylase-flavanol interaction and starch-flavanol interaction. The interaction characteristics of flavanols with α-amylase were studied from five aspects: enzyme inhibition, kinetics, fluorescence quenching, circular dichroism (CD) and computer simulation. The IC50 of flavanols (ECG, EGCG and Procyanidin) against α-amylase were 172.21 ± 0.22, 732.15 ± 0.13 and 504.45 ± 0.19 μg/mL according to the results of α-amylase inhibition experiment, respectively. ECG and Procyanidin showed mixed inhibition against α-amylase, while EGCG showed non-competition against α-amylase. However, thermodynamic parameters,computer-based docking and dynamic simulation proved that ECG and EGCG-α-amylase complexs were mainly driven by van der Waals and hydrogen bonds, while Procyanidin-α-amylase complexs was driven by hydrophobic interaction. In addition, it was indicated, by means of starch‑iodine complex spectroscopy, that flavanols inhibited the digestion of starch not only through bind with α-amylase but also through bind with starch. Thus, flavanols as a starch-based food additive have the potential to be employed as adjuvant therapy for diabetes.
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Affiliation(s)
- Chao Jiang
- School of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yu Chen
- School of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Xin Ye
- School of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Li Wang
- School of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jiajia Shao
- School of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Huijuan Jing
- School of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Chengyu Jiang
- School of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hongxin Wang
- School of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; The State Key Laboratory of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Chaoyang Ma
- School of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China; The State Key Laboratory of Food Science & Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
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24
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Andrade C, Ferreres F, Gomes NGM, Gil-Izquierdo A, Bapia S, Duangsrisai S, Pereira DM, Andrade PB, Valentão P. Gustavia gracillima Miers. flowers effects on enzymatic targets underlying metabolic disorders and characterization of its polyphenolic content by HPLC-DAD-ESI/MS n. Food Res Int 2020; 137:109694. [PMID: 33233268 DOI: 10.1016/j.foodres.2020.109694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 08/01/2020] [Accepted: 09/06/2020] [Indexed: 11/30/2022]
Abstract
Notwithstanding Gustavia gracillima Miers widespread distribution in neotropical regions, its chemical profile and biological properties remain uninvestigated. A methanol extract obtained from the flowers was characterized through HPLC-DAD-ESI/MSn, nine ellagic acid derivatives and twelve kaempferol 3-O-glycosides being identified and quantitated for the first time at the species and genus. Preliminary cytotoxicity screening did not reveal noticeable effects upon gastrointestinal representative cell lines (AGS, Caco-2 and Hep G2), which further prompted us to evaluate the impact in a series of targets involved in metabolic disorders and associated complications. Despite of the moderate inhibition towards 5-lipoxygense activity, G. gracillima methanol extract displayed significant effects on carbohydrates-hydrolysing enzymes. In contrast with the antidiabetic reference drug acarbose, the extract was able to selectively inhibit yeast α-glucosidase activity (IC50 = 4.72 µg/mL), with negligible inhibitory effects upon α-amylase. Kinetic studies pointed to a model of mixed inhibition with a great binding activity, characterized by an inhibitory constant of 2.91 µg/mL. The notable inhibitory activity was also confirmed in α-glucosidase homogenates isolated from human intestinal cells (IC50 = 34.03 µg/mL). Moreover, the extract obtained from the flowers of G. gracillima displayed significant aldose reductase inhibition (IC50 = 61.88 µg/mL), as well as O2- and NO scavenging properties. A moderate inhibitory effect was also recorded against pancreatic lipase (IC50 = 362.17 µg/mL) through a mixed inhibition mode. Recorded data supports the potential incorporation of G. gracillima flowers on antidiabetic herbal formulations and/or supplements, with not only straight action on carbohydrates digestion, but also direct interference with targets involved on subsequent diabetes events, such as triglycerides metabolism, inflammation and radical-mediated stress.
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Affiliation(s)
- Catarina Andrade
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal
| | - Federico Ferreres
- Department of Food Technology and Nutrition, Molecular Recognition and Encapsulation (REM) Group, Universidad Católica de Murcia. UCAM, Campus Los Jerónimos, s/n, 30107 Murcia, Spain.
| | - Nelson G M Gomes
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal.
| | - Angel Gil-Izquierdo
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100 Campus University Espinardo, Murcia, Spain.
| | - Sorawit Bapia
- Department of Botany, Faculty of Science, Kasetsart University, Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
| | - Sutsawat Duangsrisai
- Department of Botany, Faculty of Science, Kasetsart University, Ngam Wong Wan Road, Chatuchak, Bangkok 10900, Thailand
| | - David M Pereira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal.
| | - Paula B Andrade
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal.
| | - Patrícia Valentão
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal.
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25
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Quaresma DMO, Justino AB, Sousa RMF, Munoz RAA, de Aquino FJT, Martins MM, Goulart LR, Pivatto M, Espindola FS, de Oliveira A. Antioxidant compounds from Banisteriopsis argyrophylla leaves as α-amylase, α-glucosidase, lipase, and glycation inhibitors. Bioorg Chem 2020; 105:104335. [PMID: 33074116 DOI: 10.1016/j.bioorg.2020.104335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 08/27/2020] [Accepted: 09/29/2020] [Indexed: 01/16/2023]
Abstract
Banisteriopsis argyrophylla belongs to the Malpighiaceae family, which is a species from Cerrado, also known as "cipó-prata" or "cipó-folha-de-prata." Several species of this family present biological potential. This work reports the chemical identification of the ethanol extract (EE) and its fractions from B. argyrophylla leaves and shows the analysis of the antioxidant activity and inhibitory effects on activities of α-amylase, α-glucosidase and lipase, and non-enzymatic glycation. The ethyl acetate fraction (EAF) and n-butanol fraction (BF) showed antioxidant activity, with IC50 values of 4.1 ± 0.1 and 4.8 ± 0.1 μg mL-1, respectively, by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method, and IC50 values of 6046.3 ± 174.2 and 6264.2 ± 32.2 µmol Trolox eq g-1 by the oxygen radical absorbance capacity (ORAC) method. Furthermore, the DPPH method with these fractions presented electroactive species with antioxidant potential, as shown by the differential pulse voltammetry (DPV) method. The inhibitory effects of the EAF and BF were demonstrated by the following results: IC50 of 5.1 ± 0.3 and 2.5 ± 0.2 μg mL-1 for α-amylase, IC50 of 1093.5 ± 26.0 and 1250.8 ± 21.9 μg mL-1 for α-glucosidase, IC50 of 8.3 ± 4.1 and 4.4 ± 1.0 μg mL-1 for lipase, and IC50 of 1.3 ± 0.1 and 0.9 ± 0.1 μg mL-1 for glycation. Some bioactive compounds were identified by (-)-ESI-MS/MS, such as catechin, procyanidins, glycosylated flavonoids, kaempferol, and megastigmane glucosides. The antidiabetic activity of B.argyrophylla has been reported for the first time.
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Affiliation(s)
- Daiane M O Quaresma
- Institute of Chemistry, Federal University of Uberlândia, Av. João Naves de Ávila, 2121. Campus Santa Mônica, Uberlândia-MG, CEP 38400-902, Brazil
| | - Allisson B Justino
- Institute of Biotechnology, Federal University of Uberlândia, Av. Pará, 1720. Campus Umuarama, Uberlândia-MG, CEP 38400-902, Brazil
| | - Raquel M F Sousa
- Institute of Chemistry, Federal University of Uberlândia, Av. João Naves de Ávila, 2121. Campus Santa Mônica, Uberlândia-MG, CEP 38400-902, Brazil
| | - Rodrigo A A Munoz
- Institute of Chemistry, Federal University of Uberlândia, Av. João Naves de Ávila, 2121. Campus Santa Mônica, Uberlândia-MG, CEP 38400-902, Brazil
| | - Francisco J T de Aquino
- Institute of Chemistry, Federal University of Uberlândia, Av. João Naves de Ávila, 2121. Campus Santa Mônica, Uberlândia-MG, CEP 38400-902, Brazil
| | - Mário M Martins
- Institute of Biotechnology, Federal University of Uberlândia, Av. Pará, 1720. Campus Umuarama, Uberlândia-MG, CEP 38400-902, Brazil
| | - Luiz R Goulart
- Institute of Biotechnology, Federal University of Uberlândia, Av. Pará, 1720. Campus Umuarama, Uberlândia-MG, CEP 38400-902, Brazil
| | - Marcos Pivatto
- Institute of Chemistry, Federal University of Uberlândia, Av. João Naves de Ávila, 2121. Campus Santa Mônica, Uberlândia-MG, CEP 38400-902, Brazil
| | - Foued S Espindola
- Institute of Biotechnology, Federal University of Uberlândia, Av. Pará, 1720. Campus Umuarama, Uberlândia-MG, CEP 38400-902, Brazil
| | - Alberto de Oliveira
- Institute of Chemistry, Federal University of Uberlândia, Av. João Naves de Ávila, 2121. Campus Santa Mônica, Uberlândia-MG, CEP 38400-902, Brazil.
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26
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Liu M, Wang L, Li X, Wu Y, Yin F, Liu J. Trilobatin ameliorates insulin resistance through IRS-AKT-GLUT4 signaling pathway in C2C12 myotubes and ob/ob mice. Chin Med 2020; 15:110. [PMID: 33062046 PMCID: PMC7552530 DOI: 10.1186/s13020-020-00390-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 10/04/2020] [Indexed: 12/13/2022] Open
Abstract
Background Trilobatin, a natural compound, has been found to exhibit anti-diabetic properties in high-fat diet (HFD) and streptozotocin (STZ) induced type 2 diabetic mice. But up to now no research has been reported on the effect of trilobatin on insulin resistance in peripheral tissues. Herein, we determined the effects of trilobatin on insulin resistance in palmitate-treated C2C12 myotubes and ob/ob mice. Methods Male ob/ob mice (8-10 weeks) and same background C57BL/6 mice were used to evaluate the role of trilobatin on insulin resistance; protein expression and phosphorylation were measured by western blot; glucose uptake was determined a fluorescent test. Results Treatment with trilobatin prevented palmitate-induced insulin resistance by enhancing glucose uptake and the phosphorylation of insulin resistance substrate 1 (IRS1) and protein Kinase B, (PKB/AKT), recovered the translocation of GLUT4 from cytoplasm to membrane, but preincubation with LY294002, an inhibitor of PI3K, blocked the effects of trilobatin on glucose uptake and the distribution of GLUT4 in C2C12 myotubes. Furthermore, administration with trilobatin for 4 weeks significantly improved insulin resistance by decreasing fasting blood glucose and insulin in serum, enhancing the phosphorylation of IRS1 and AKT, and recovering the expression and translocation of GLUT4 in ob/ob mice. Conclusions IRS-AKT-GLUT4 signaling pathway might be involved in trilobatin ameliorating insulin resistance in skeletal muscle of obese animal models.
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Affiliation(s)
- Min Liu
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Hongguang Road 69, Ba'nan District, Chongqing, 400054 China.,College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054 China
| | - Lujing Wang
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Hongguang Road 69, Ba'nan District, Chongqing, 400054 China.,College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054 China
| | - Xigan Li
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Hongguang Road 69, Ba'nan District, Chongqing, 400054 China.,College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054 China
| | - Yucui Wu
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Hongguang Road 69, Ba'nan District, Chongqing, 400054 China.,College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054 China
| | - Fei Yin
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Hongguang Road 69, Ba'nan District, Chongqing, 400054 China.,College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054 China
| | - Jianhui Liu
- Chongqing Key Lab of Medicinal Chemistry & Molecular Pharmacology, Chongqing University of Technology, Hongguang Road 69, Ba'nan District, Chongqing, 400054 China.,College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, 400054 China
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27
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Zhang Y, Yang Z, Liu G, Wu Y, Ouyang J. Inhibitory effect of chestnut (Castanea mollissima Blume) inner skin extract on the activity of α-amylase, α-glucosidase, dipeptidyl peptidase IV and in vitro digestibility of starches. Food Chem 2020; 324:126847. [PMID: 32344340 DOI: 10.1016/j.foodchem.2020.126847] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/04/2020] [Accepted: 04/16/2020] [Indexed: 10/24/2022]
Abstract
This study aimed to investigate the inhibitory effect of chestnut inner skin extract (CISE) on the activity of postprandial blood sugar-related enzymes. In total, 12 flavonoids were identified by HPLC-TOF-MS. CISE showed strong and weak inhibition on α-amylase and α-glucosidase, with the IC50 of 27.2 and 2.3 μg/mL, respectively. The inhibition modes of CISE against α-amylase and α-glucosidase were mixed-type and non-competitive type, respectively. Epicatechin gallate noncompetitively inhibited α-amylase, α-glucosidase and dipeptidyl peptidase IV (DPP-IV). Analysis by ultraviolet-visible spectroscopy, fluorescence spectroscopy and circular dichroism suggested that flavonoids altered the hydrophobicity and microenvironment of these enzymes. CISE decreased the starch bioavailability by reducing the enzymatic hydrolysis rate and increasing the fraction of undigested starch. The extract reduced the rapidly digestible starch and increased the resistant starch after incorporation into A-, B- or C- crystallinity starch. Thus, the chestnut inner skin is a useful resource for regulating postprandial blood sugar level.
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Affiliation(s)
- Yuyang Zhang
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Process and Safety, Beijing Forestry University, Beijing 100083, China
| | - Zhenglei Yang
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Process and Safety, Beijing Forestry University, Beijing 100083, China
| | - Gege Liu
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Process and Safety, Beijing Forestry University, Beijing 100083, China
| | - Yanwen Wu
- Beijing Center for Physical and Chemical Analysis, Beijing Food Safety Analysis and Testing Engineering Research Center, Beijing Academy of Science and Technology, Beijing 100089, China
| | - Jie Ouyang
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Process and Safety, Beijing Forestry University, Beijing 100083, China.
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GC-MS Analysis and Inhibitory Evaluation of Terminalia catappa Leaf Extracts on Major Enzymes Linked to Diabetes. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:6316231. [PMID: 31662777 PMCID: PMC6748200 DOI: 10.1155/2019/6316231] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 08/02/2019] [Accepted: 08/09/2019] [Indexed: 02/06/2023]
Abstract
Terminalia catappa leaves are used in managing both diabetes mellitus and its complications in Southwest Nigeria. However, its inhibitory activity on enzymes implicated in diabetes is not very clear. This study investigated the in vitro inhibitory properties and mode of inhibition of T. catappa leaf extracts on enzymes associated with diabetes. The study also identified some bioactive compounds as well as their molecular interaction in the binding pocket of these enzymes. Standard enzyme inhibition and kinetics assays were performed to determine the inhibitory effects of aqueous extract (TCA) and ethanol extract (TCE) of T. catappa leaves on α-glucosidase and α-amylase activities. The phytoconstituents of TCA and TCE were determined using GC-MS. Molecular docking of the phytocompounds was performed using Autodock Vina. TCA and TCE were the most potent inhibitors of α-glucosidase (IC50 = 3.28 ± 0.47 mg/mL) and α-amylase (IC50 = 0.24 ± 0.08 mg/mL), respectively. Both extracts displayed a mixed mode of inhibition on α-amylase activity, while mixed and noncompetitive modes of inhibition were demonstrated by TCA and TCE, respectively, on α-glucosidase activity. The GC-MS analytic chromatogram revealed the presence of 24 and 22 compounds in TCE and TCA, respectively, which were identified mainly as phenolic compounds, terpenes/terpenoids, fatty acids, and other phytochemicals. The selected compounds exhibited favourable interactions with the enzymes compared with acarbose. Overall, the inhibitory effect of T. catappa on α-amylase and α-glucosidase may be ascribed to the synergistic action of its rich phenolic and terpene composition giving credence to the hypoglycaemic nature of T. catappa leaves.
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Ramos AS, Mar JM, da Silva LS, Acho LD, Silva BJP, Lima ES, Campelo PH, Sanches EA, Bezerra JA, Chaves FCM, Campos FR, Machado MB. Pedra-ume caá fruit: An Amazon cherry rich in phenolic compounds with antiglycant and antioxidant properties. Food Res Int 2019; 123:674-683. [DOI: 10.1016/j.foodres.2019.05.042] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 05/14/2019] [Accepted: 05/30/2019] [Indexed: 12/11/2022]
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Ren S, Li K, Liu Z. Research on the Influences of Five Food-Borne Polyphenols on In Vitro Slow Starch Digestion and the Mechanism of Action. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8617-8625. [PMID: 31293160 DOI: 10.1021/acs.jafc.9b01724] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Inhibiting starch digestion can effectively control postprandial blood sugar level. In this study, the in vitro digestion differences among the mixtures of five polyphenols (i.e., procyanidins [PAs], catechin [CA], tannic acid [TA], rutin [RU], and quercetin [QU]) and starch were analyzed through an in vitro simulation test of starch digestion. The interaction characteristics of these five polyphenols with α-amylase and α-glucosidase were investigated in terms of the inhibition effect, dynamics, fluorescence quenching, and circular dichroism (CD). The results revealed that the rapidly digestible starch (RDS) contents decreased, while the resistant starch (RS) contents increased. All five polyphenols inhibited the α-amylase activity through the noncompetitive approach but inhibited the α-glucosidase activity through the competitive approach. Five polyphenols combined with α-amylase spontaneously by using the hydrophobic effect. The interaction of PAs and QU with α-glucosidase were recognized as van der Waals forces and H bonding, whereas CA and TA interacted with α-glucosidase through the hydrophobic effect. All five polyphenols can cause conformational changes in enzymes.
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Affiliation(s)
- Shuncheng Ren
- School of Food Science and Technology , Henan University of Technology , Zhengzhou 450001 , P R China
| | - Keke Li
- School of Food Science and Technology , Henan University of Technology , Zhengzhou 450001 , P R China
| | - Zelong Liu
- School of Food Science and Technology , Henan University of Technology , Zhengzhou 450001 , P R China
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31
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Yao Z, Li C, Gu Y, Zhang Q, Liu L, Meng G, Wu H, Bao X, Zhang S, Sun S, Wang X, Zhou M, Jia Q, Song K, Li Z, Gao W, Niu K, Guo C. Dietary myricetin intake is inversely associated with the prevalence of type 2 diabetes mellitus in a Chinese population. Nutr Res 2019; 68:82-91. [PMID: 31421396 DOI: 10.1016/j.nutres.2019.06.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 06/07/2019] [Accepted: 06/17/2019] [Indexed: 01/14/2023]
Abstract
Myricetin is a natural plant-derived inhibitor for α-glucosidase and α-amylase and possesses strong antioxidant activity. Myricetin is reported to be effective in treating many symptoms that are associated with type 2 diabetes mellitus (T2DM), therefore, we hypothesized that myricetin plays a preventive role in the development of T2DM. To test this hypothesis, we designed a cross-sectional population study, which included 24 138 subjects, with 1357 of them diagnosed with T2DM. A validated 100-item food frequency questionnaire was used to collect dietary information. Daily intakes of myricetin and nutrients were calculated, based on the Chinese food composition tables. Multiple logistic regression analysis models were used to analyze the relationship between the quartiles of myricetin intake and the prevalence of T2DM. We found that, in this Chinese population, the daily intake of myricetin was 120.5 ± 95.7 mg, with apple, peach, orange, pineapple, and sweet potato being the main food sources. Significant inverse trends were observed between intakes of myricetin and prevalence of T2DM in multivariable models (all p-trend <0.0001). The odds ratios (95% CI) for T2DM across the ascending quartiles of myricetin intake were: 1.00 (reference), 0.73 (0.61, 0.87), 0.61 (0.50, 0.75), and 0.51 (0.40, 0.64). This study showed that myricetin intake was inversely related to the prevalence of T2DM in this Chinese population, suggesting a protective effect of myricetin in the development of T2DM.
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Affiliation(s)
- Zhanxin Yao
- Institute of Environmental and Operational Medicine, Tianjin 300050, China.
| | - Chao Li
- Institute of Environmental and Operational Medicine, Tianjin 300050, China.
| | - Yeqing Gu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China.
| | - Qing Zhang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300070, China.
| | - Li Liu
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300070, China.
| | - Ge Meng
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China.
| | - Hongmei Wu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China.
| | - Xue Bao
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China.
| | - Shunming Zhang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China.
| | - Shaomei Sun
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300070, China.
| | - Xing Wang
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300070, China.
| | - Ming Zhou
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300070, China.
| | - Qiyu Jia
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300070, China.
| | - Kun Song
- Health Management Centre, Tianjin Medical University General Hospital, Tianjin 300070, China.
| | - Zhe Li
- Institute of Environmental and Operational Medicine, Tianjin 300050, China.
| | - Weina Gao
- Institute of Environmental and Operational Medicine, Tianjin 300050, China.
| | - Kaijun Niu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin 300070, China; Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin 300070, China; Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin 300070, China.
| | - Changjiang Guo
- Institute of Environmental and Operational Medicine, Tianjin 300050, China.
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Irondi EA, Adegoke BM, Effion ES, Oyewo SO, Alamu EO, Boligon AA. Enzymes inhibitory property, antioxidant activity and phenolics profile of raw and roasted red sorghum grains in vitro. FOOD SCIENCE AND HUMAN WELLNESS 2019. [DOI: 10.1016/j.fshw.2019.03.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Loo KY, Leong KH, Sivasothy Y, Ibrahim H, Awang K. Molecular Insight and Mode of Inhibition of α-Glucosidase and α-Amylase by Pahangensin A from Alpinia pahangensis Ridl. Chem Biodivers 2019; 16:e1900032. [PMID: 30957403 DOI: 10.1002/cbdv.201900032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 04/08/2019] [Indexed: 11/12/2022]
Abstract
The inhibition of carbohydrate-hydrolyzing enzymes in human digestive organs is crucial in controlling blood sugar levels, which is important in treating type 2 diabetes. In the current study, pahangensin A (1), a bis-labdanic diterpene characterized previously in the rhizomes of Alpinia pahangensis Ridl., was identified as an active dual inhibitor for α-amylase (IC50 =114.80 μm) and α-glucosidase (IC50 =153.87 μm). This is the first report on the dual α-amylase and α-glucosidase inhibitory activities of a bis-labdanic diterpene. The Lineweaver-Burk plots of compound 1 indicate that it is a mixed-type inhibitor with regard to both enzymes. Based on molecular docking studies, compound 1 docked in a non-active site of both enzymes. The dual inhibitory activity of compound 1 makes it a suitable natural alternative in the treatment of type 2 diabetes.
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Affiliation(s)
- Kong Yong Loo
- Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kok Hoong Leong
- Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.,Center for Natural Product and Drug Discovery (CENAR), Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Yasodha Sivasothy
- Research Center for Crystalline Materials, Faculty of Science and Technology, Sunway University, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Halijah Ibrahim
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Khalijah Awang
- Center for Natural Product and Drug Discovery (CENAR), Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.,Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Yazdankhah S, Hojjati M, Azizi MH. The Antidiabetic Potential of Black Mulberry Extract-Enriched Pasta through Inhibition of Enzymes and Glycemic Index. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2019; 74:149-155. [PMID: 30632080 DOI: 10.1007/s11130-018-0711-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In the present work, pasta enriched in different formulations by black mulberry extract in order to inhibit enzymes related to starch hydrolyzation. Total phenol content (TPC), antioxidant activity and anthocyanin components of ethanol/water black mulberry extract were investigated. TPC of the black mulberry extract was found 65.61 ± 0.07 mg GAE/g. Black mulberry extract could scavenge the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals more effectively than tertiary butylhydroquinone (TBHQ) also vitamin C due to its detected polyphenolic compounds (cyanidin-3-glucoside, cyanidin-3-rutinoside, and cyanidin-3-xyloside). The IC50 value of the black mulberry extract was obtained 8.31 μg/mL while it was measured 59.62 and 62.64 μg/mL for TBHQ and vitamin C, respectively. The pasta-enriched with freeze-dried black mulberry extract showed effective inhibition against applied α-amylases (α-amylase from porcine pancreas, Bacillus sp, and human saliva) and α-glucosidase originated from Saccharomyces cerevisiae. The IC50 values of tested enzymes exhibited that black mulberry effectively act as an inhibitory agent comparing with acarbose because of its antioxidant activity. Results revealed that starch hydrolysis index (HI) and predicted glycemic index (GIpredicted) of cooked pasta-enriched with various concentration levels of black mulberry extract were significantly decreased especially when 1.5% of the extract was incorporated. In addition, The IC50 value of the black mulberry extract obtained from cooked pasta was increased against α-amylase and α-glucosidase. The results obviously presented that diabetes mellitus type 2 could be resolved by enrichment of polyphenolic compounds into the pasta.
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Affiliation(s)
- Samira Yazdankhah
- Department of Food Science and Technology, Masjed Soleyman Branch, Islamic Azad University, Masjed Soleyman, Iran
| | - Mohammad Hojjati
- Department of Food Science and Technology, Agricultural Sciences and Natural Resources University of Khuzestan, Ahwaz, Iran.
| | - Mohammad Hossein Azizi
- Department of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
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35
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Figueiredo-González M, Reboredo-Rodríguez P, González-Barreiro C, Carrasco-Pancorbo A, Cancho-Grande B, Simal-Gándara J. The involvement of phenolic-rich extracts from Galician autochthonous extra-virgin olive oils against the α-glucosidase and α-amylase inhibition. Food Res Int 2018; 116:447-454. [PMID: 30716967 DOI: 10.1016/j.foodres.2018.08.060] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 08/03/2018] [Accepted: 08/18/2018] [Indexed: 01/08/2023]
Abstract
'Brava' and 'Mansa de Figueiredo' extra-virgin olive oils (EVOOs) are two varieties identified from north-western Spain. A systematic phenolic characterization of the studied oils was undertaken by LC-ESI-IT-MS. In addition, the role of dietary polyphenols from these EVOOs has been evaluated against the inhibition of key enzymes (α-glucosidase and α-amylase) in the management of diabetes mellitus (DM). Oleuropein and ligstroside derivatives comprised 83% and 67% of the total phenolic compounds in 'Brava' and 'Mansa de Figueiredo' EVOOs, respectively. The main secoiridoids from oleuropein were DOA (3,4-DHPEA-EDA, 59 and 22 mg kg-1, respectively) and the main isomer of OlAgl (3,4-DHPEA-EA, 74 and 23 mg kg-1). The main secoiridoids from ligstroside were D-LigAgl (p-HPEA-EDA or oleocanthal, 23 and 167 mg kg-1) and the main isomer of LigAgl (p-HPEA-EA, 214 and 114 mg kg-1). For α-glucosidase, both EVOO extracts displayed stronger inhibitory activity (IC50 values of 60 ± 8 and 118 ± 9 μg mL-1, respectively) than the commercial inhibitor acarbose (IC50 = 356 ± 21 μg mL-1). Nevertheless, for α-amylase, only 'Brava' extracts showed anti-α-amylase capacity. A daily VOO intake lower than the requirements of EFSA seem to be enough to reach both 50% for α-glucosidase and 25% for α-amylase inhibition. These findings support the potential health benefits derived from Galician EVOOs that might be probably linked to the outstanding high concentration levels of phenolic acids and flavonoids.
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Affiliation(s)
- M Figueiredo-González
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Sciences, University of Vigo, Ourense Campus, E-32004 Ourense, Spain
| | - P Reboredo-Rodríguez
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Sciences, University of Vigo, Ourense Campus, E-32004 Ourense, Spain; Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche (DISCO)-Sez. Biochimica, Facoltà di Medicina, Università Politecnica delle Marche, Via Ranieri 65, 60131 Ancona, Italy
| | - C González-Barreiro
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Sciences, University of Vigo, Ourense Campus, E-32004 Ourense, Spain
| | - A Carrasco-Pancorbo
- Department of Analytical Chemistry, Faculty of Science, University of Granada, Ave. Fuentenueva s/n, 18071 Granada, Spain
| | - B Cancho-Grande
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Sciences, University of Vigo, Ourense Campus, E-32004 Ourense, Spain.
| | - J Simal-Gándara
- Nutrition and Bromatology Group, Department of Analytical and Food Chemistry, Faculty of Sciences, University of Vigo, Ourense Campus, E-32004 Ourense, Spain
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36
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Functional constituents of six wild edible Silene species: A focus on their phytochemical profiles and bioactive properties. FOOD BIOSCI 2018. [DOI: 10.1016/j.fbio.2018.03.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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37
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Figueiredo-González M, Reboredo-Rodríguez P, González-Barreiro C, Simal-Gándara J, Valentão P, Carrasco-Pancorbo A, Andrade P, Cancho-Grande B. Evaluation of the neuroprotective and antidiabetic potential of phenol-rich extracts from virgin olive oils by in vitro assays. Food Res Int 2018; 106:558-567. [DOI: 10.1016/j.foodres.2018.01.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 01/09/2018] [Accepted: 01/12/2018] [Indexed: 12/17/2022]
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38
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Melucci D, Locatelli M, Locatelli C, Zappi A, De Laurentiis F, Carradori S, Campestre C, Leporini L, Zengin G, Picot CMN, Menghini L, Mahomoodally MF. A Comparative Assessment of Biological Effects and Chemical Profile of Italian Asphodeline lutea Extracts. Molecules 2018; 23:molecules23020461. [PMID: 29463056 PMCID: PMC6017467 DOI: 10.3390/molecules23020461] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 02/16/2018] [Accepted: 02/17/2018] [Indexed: 12/14/2022] Open
Abstract
The present study aims to highlight the therapeutic potential of Asphodeline lutea (AL), a wild edible plant of the Mediterranean diet. Roots, aerial parts, and flowers of AL at two different phenological stages were collected from three locations in Italy. The inhibitory activities of extracts on strategic enzymes linked to human diseases were assessed. The antioxidant properties were evaluated in vitro, using six standard bioassays. The phenolic and anthraquinone profiles were also established using HPLC-PDA. Zinc, cadmium, lead, and copper contents were also determined. All the samples inhibited acetylcholinesterase (from 1.51 to 2.20 mg GALAEs/g extract), tyrosinase (from 7.50 to 25.3 mg KAEs/g extract), and α-amylase (from 0.37 to 0.51 mmol ACAEs/g extract). Aloe-emodin and physcion were present in all parts, while rhein was not detected. The phenolic profile and the heavy metals composition of specimens gathered from three different regions of Italy were different. It can be argued that samples collected near the street can contain higher concentrations of heavy metals. The experimental data confirm that the A. lutea species could be considered as a potential source of bioactive metabolites, and its consumption could play a positive and safe role in human health maintenance.
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Affiliation(s)
- Dora Melucci
- Department of Chemistry "G. Ciamician", University of Bologna, Bologna 40126, Italy.
| | - Marcello Locatelli
- Department of Pharmacy, University "G. D'Annunzio" of Chieti-Pescara, Chieti 66100, Italy.
- Interuniversity Consortium of Structural and Systems Biology, Rome 00136, Italy.
| | - Clinio Locatelli
- Department of Chemistry "G. Ciamician", University of Bologna, Bologna 40126, Italy.
| | - Alessandro Zappi
- Department of Chemistry "G. Ciamician", University of Bologna, Bologna 40126, Italy.
| | | | - Simone Carradori
- Department of Pharmacy, University "G. D'Annunzio" of Chieti-Pescara, Chieti 66100, Italy.
| | - Cristina Campestre
- Department of Pharmacy, University "G. D'Annunzio" of Chieti-Pescara, Chieti 66100, Italy.
| | - Lidia Leporini
- Department of Pharmacy, University "G. D'Annunzio" of Chieti-Pescara, Chieti 66100, Italy.
| | - Gokhan Zengin
- Department of Biology, Selcuk University, Campus, 42250, Konya 42130, Turkey.
| | | | - Luigi Menghini
- Department of Pharmacy, University "G. D'Annunzio" of Chieti-Pescara, Chieti 66100, Italy.
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Potentially antidiabetic and antihypertensive compounds identified from Pistacia atlantica leaf extracts by LC fingerprinting. J Pharm Biomed Anal 2018; 149:547-556. [DOI: 10.1016/j.jpba.2017.11.049] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 11/19/2017] [Accepted: 11/20/2017] [Indexed: 01/20/2023]
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40
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Mouho DG, Oliveira AP, Kodjo CG, Valentão P, Gil-Izquierdo A, Andrade PB, Ouattara ZA, Bekro YA, Ferreres F. Chemical findings and in vitro biological studies to uphold the use of Ficus exasperata Vahl leaf and stem bark. Food Chem Toxicol 2017; 112:134-144. [PMID: 29288758 DOI: 10.1016/j.fct.2017.12.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 11/28/2017] [Accepted: 12/21/2017] [Indexed: 12/18/2022]
Abstract
Ficus exasperata Vahl, commonly known as sandpaper, is a terrestrial Afro-tropical tree used in popular medicine. Despite the existence of some works on the biological activities of this species, its chemical composition is still poorly known. The aim of this study was to extend the knowledge on the phytochemistry and biological properties of this species. Aqueous extracts from F. exasperata leaves and stem bark were analysed. Thirty-one phenolic compounds, comprising cinnamoyl derivatives, flavonoid-O-glycosides, flavonoid-mono-C-glycosides, flavonoid-di-C-glycosides and one furanocoumarin, were determined by HPLC-DAD-ESI/MSn and UPLC-ESI-QTOF-MS, 26 of them being reported for the first time in this species. The profile of organic acids, characterized by HPLC-UV, was also reported for the first time. The best radical scavenging activity was observed for the aqueous extract from leaves (IC50 values of 222.5, 510.0 and 50.0 μg/mL against DPPH•, •NO and O2•-, respectively). In addition, both aqueous extracts of the leaves and stem bark displayed a weak effect on α-amylase, and no cytotoxicity against gastric adenocarcinoma cell line, AGS. This study contributes to the valorisation of these vegetal materials, which may have application in functional foods and/or nutraceuticals.
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Affiliation(s)
- Didier G Mouho
- Laboratoire de Chimie Bio-Organique et de Substances Naturelles (LCBONS/www.lablcbosn.com), UFR-SFA, Université Nangui Abrogoua, 02 B.P. 801, Abidjan 02, Côte d'Ivoire
| | - Andreia P Oliveira
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, nº 228, 4050-313 Porto, Portugal
| | - Charles Guillaume Kodjo
- Laboratoire de Chimie Bio-Organique et de Substances Naturelles (LCBONS/www.lablcbosn.com), UFR-SFA, Université Nangui Abrogoua, 02 B.P. 801, Abidjan 02, Côte d'Ivoire
| | - Patrícia Valentão
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, nº 228, 4050-313 Porto, Portugal
| | - Angel Gil-Izquierdo
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100, Campus University Espinardo, Murcia, Spain
| | - Paula B Andrade
- REQUIMTE/LAQV, Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, R. Jorge Viterbo Ferreira, nº 228, 4050-313 Porto, Portugal.
| | - Zana Adama Ouattara
- Laboratoire de Chimie Bio-Organique et de Substances Naturelles (LCBONS/www.lablcbosn.com), UFR-SFA, Université Nangui Abrogoua, 02 B.P. 801, Abidjan 02, Côte d'Ivoire
| | - Yves-Alain Bekro
- Laboratoire de Chimie Bio-Organique et de Substances Naturelles (LCBONS/www.lablcbosn.com), UFR-SFA, Université Nangui Abrogoua, 02 B.P. 801, Abidjan 02, Côte d'Ivoire
| | - Federico Ferreres
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100, Campus University Espinardo, Murcia, Spain.
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Liu J, Wang X, Geng S, Liu B, Liang G. Inhibitory Mechanism of Taxifolin against α-Glucosidase Based on Spectrofluorimetry and Molecular Docking. Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701201116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The α-glucosidase inhibitory activity and behavior of taxifolin was first investigated by spectrofluorimetry and molecular docking. It was found that taxifolin inhibits α-glucosidase in a competitive manner with the IC50 value of 0.16 mg/mL. The intrinsic fluorescence quenching of α-glucosidase in the presence of taxifolin was observed by the static quenching mechanism. According to the thermodynamic study, the complex of taxifolin and α-glucosidase was maintained by van der Waals and hydrogen bonding. The binding mode provided by molecular docking simulation indicated the existence of hydrogen bonding between taxifolin and the amino acid residues of α-glucosidase (Glu429, Asp 568 and Glu771), which coincided with the result of fluorescence analysis.
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Affiliation(s)
- Jiang Liu
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering college, Chongqing University, Chongqing 400044, China
| | - Xiansheng Wang
- Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Nanjing Station for DUS Testing Center of New Plant Varieties, Ministry of Agriculture, Nanjing 210014, China
| | - Sheng Geng
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Benguo Liu
- School of Food Science, Henan Institute of Science and Technology, Xinxiang 453003, China
| | - Guizhao Liang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering college, Chongqing University, Chongqing 400044, China
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Figueiredo-González M, Valentão P, Pereira DM, Andrade PB. Further insights on tomato plant: Cytotoxic and antioxidant activity of leaf extracts in human gastric cells. Food Chem Toxicol 2017; 109:386-392. [DOI: 10.1016/j.fct.2017.09.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 09/07/2017] [Accepted: 09/08/2017] [Indexed: 01/04/2023]
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Comparison and screening of bioactive phenolic compounds in different blueberry cultivars: Evaluation of anti-oxidation and α-glucosidase inhibition effect. Food Res Int 2017; 100:312-324. [DOI: 10.1016/j.foodres.2017.07.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 06/29/2017] [Accepted: 07/02/2017] [Indexed: 01/01/2023]
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Hepatoprotective effect of Opuntia microdasys (Lehm.) Pfeiff flowers against diabetes type II induced in rats. Biomed Pharmacother 2017; 94:79-87. [DOI: 10.1016/j.biopha.2017.07.093] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 07/19/2017] [Accepted: 07/19/2017] [Indexed: 01/08/2023] Open
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Schloesser A, Esatbeyoglu T, Schultheiß G, Vollert H, Lüersen K, Fischer A, Rimbach G. Antidiabetic Properties of an Apple/Kale Extract In Vitro, In Situ, and in Mice Fed a Western-Type Diet. J Med Food 2017. [PMID: 28622482 DOI: 10.1089/jmf.2017.0019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a common and increasingly prevalent metabolic disorder, and effective preventive strategies against this disease are needed. The aim of the present study was to evaluate the potential antidiabetic properties of a dietary apple/kale extract (AKE), which was rich in phlorizin and flavonoids, in laboratory mice. Mice were fed a control diet, a Western-type high-sugar, high-fat diet (WTD), or a WTD plus AKE for 10 weeks. Body weight, food and energy intake, body composition, and blood glucose level were recorded in addition to the postprandial rise in blood glucose concentration after a single administration of glucose (oral glucose tolerance test, OGTT). Furthermore, changes in glucose-induced short-circuit current (ISC) in response to AKE and phlorizin administration were evaluated in situ in intestinal tissues with Ussing chambers. In addition, the in vitro inhibition of α-glucosidase by AKE was determined. The present data suggest that supplementation of an AKE to a WTD significantly improved both blood glucose levels and OGTT in mice. Furthermore, in situ uptake of glucose was significantly inhibited by AKE. Finally, we showed that AKE significantly inhibits α-glucosidase activity in vitro. We conclude that AKE exhibits antidiabetic properties by a dual mechanism, including the inhibition of α-glucosidase and sodium-dependent glucose transporter 1 (SGLT1). Thus, AKE has the potential to serve as a natural plant bioactive compound for dietary prevention strategies against T2DM.
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Affiliation(s)
- Anke Schloesser
- 1 Institute of Human Nutrition and Food Science, University of Kiel , Kiel, Germany
| | - Tuba Esatbeyoglu
- 1 Institute of Human Nutrition and Food Science, University of Kiel , Kiel, Germany
| | | | | | - Kai Lüersen
- 1 Institute of Human Nutrition and Food Science, University of Kiel , Kiel, Germany
| | - Alexandra Fischer
- 1 Institute of Human Nutrition and Food Science, University of Kiel , Kiel, Germany
| | - Gerald Rimbach
- 1 Institute of Human Nutrition and Food Science, University of Kiel , Kiel, Germany
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Collado-González J, Grosso C, Valentão P, Andrade PB, Ferreres F, Durand T, Guy A, Galano JM, Torrecillas A, Gil-Izquierdo Á. Inhibition of α-glucosidase and α-amylase by Spanish extra virgin olive oils: The involvement of bioactive compounds other than oleuropein and hydroxytyrosol. Food Chem 2017; 235:298-307. [PMID: 28554640 DOI: 10.1016/j.foodchem.2017.04.171] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/23/2017] [Accepted: 04/26/2017] [Indexed: 12/28/2022]
Abstract
Despite the wide use of extra virgin olive oil (EVOO) to combat several diseases, the antidiabetic and anti-cholinesterase activity of Spanish EVOO have not been assessed. In order to evaluate which compounds are responsible for these activities of five Spanish EVOOs, in addition to flavonoids, we investigated for the first time the effect of the contents of carotenoids, fatty acids (FAs), and phytoprostanes (PhytoPs) on four enzymes: α-glucosidase, α-amylase, acetylcholinesterase, and butyrylcholinesterase. The extracts of these five Spanish EVOOs were found to contain three flavones, three carotenoids, six FAs, and seven classes of PhytoPs. The samples exhibited no in vitro anti-cholinesterase activity but presented strong antidiabetic activity, in the order: 'Arbequina'≈'Picual'≈'Cuquillo'>'Hojiblanca'>'Cornicabra'. The samples showed a higher in vitro hypoglycemic effect than individual or mixed standards, possibly due to interaction between multiple identified compounds and/or a very complex multivariate interaction between other factors.
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Affiliation(s)
- Jacinta Collado-González
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100 Campus University Espinardo, Murcia, Spain
| | - Clara Grosso
- REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal
| | - Patricia Valentão
- REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal
| | - Paula B Andrade
- REQUIMTE/Laboratório de Farmacognosia, Departamento de Química, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, n° 228, 4050-313 Porto, Portugal.
| | - Federico Ferreres
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100 Campus University Espinardo, Murcia, Spain
| | - Thierry Durand
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, University Montpellier I and II, ENSCM, Faculty of Pharmacy, Montpellier, France
| | - Alexandre Guy
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, University Montpellier I and II, ENSCM, Faculty of Pharmacy, Montpellier, France
| | - Jean-Marie Galano
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, University Montpellier I and II, ENSCM, Faculty of Pharmacy, Montpellier, France
| | - Arturo Torrecillas
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100 Campus University Espinardo, Murcia, Spain
| | - Ángel Gil-Izquierdo
- Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100 Campus University Espinardo, Murcia, Spain.
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Polyphenolic Compounds and Digestive Enzymes: In Vitro Non-Covalent Interactions. Molecules 2017; 22:molecules22040669. [PMID: 28441731 PMCID: PMC6154557 DOI: 10.3390/molecules22040669] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 04/18/2017] [Accepted: 04/19/2017] [Indexed: 01/11/2023] Open
Abstract
The digestive enzymes–polyphenolic compounds (PCs) interactions behind the inhibition of these enzymes have not been completely studied. The existing studies have mainly analyzed polyphenolic extracts and reported inhibition percentages of catalytic activities determined by UV-Vis spectroscopy techniques. Recently, pure PCs and new methods such as isothermal titration calorimetry and circular dichroism have been applied to describe these interactions. The present review focuses on PCs structural characteristics behind the inhibition of digestive enzymes, and progress of the used methods. Some characteristics such as molecular weight, number and position of substitution, and glycosylation of flavonoids seem to be related to the inhibitory effect of PCs; also, this effect seems to be different for carbohydrate-hydrolyzing enzymes and proteases. The digestive enzyme–PCs molecular interactions have shown that non-covalent binding, mostly by van der Waals forces, hydrogen binding, hydrophobic binding, and other electrostatic forces regulate them. These interactions were mainly associated to non-competitive type inhibitions of the enzymatic activities. The present review emphasizes on the digestive enzymes such as α-glycosidase (AG), α-amylase (PA), lipase (PL), pepsin (PE), trypsin (TP), and chymotrypsin (CT). Existing studies conducted in vitro allow one to elucidate the characteristics of the structure–function relationships, where differences between the structures of PCs might be the reason for different in vivo effects.
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Antioxidant Activity and Inhibitory Potential of Cistus salviifolius (L.) and Cistus monspeliensis (L.) Aerial Parts Extracts against Key Enzymes Linked to Hyperglycemia. BIOMED RESEARCH INTERNATIONAL 2017; 2017:2789482. [PMID: 28116307 PMCID: PMC5237773 DOI: 10.1155/2017/2789482] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 11/20/2016] [Accepted: 12/12/2016] [Indexed: 01/09/2023]
Abstract
Cistus genus (Cistaceae) comprises several medicinal plants used in traditional medicines to treat several pathological conditions including hyperglycemia. These include Cistus salviifolius L. (CS) and Cistus monspeliensis L. (CM), still not fully explored as a source of metabolites with therapeutic potential for human diseases. In this study, the antioxidant α-amylase and α-glucosidase enzyme inhibitory effects of aqueous and hydromethanolic extracts from the aerial parts of Moroccan CS and CM were investigated. Antioxidant activity has been assessed using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radicals and ferric reducing/antioxidant power (FRAP) methods. The α-amylase and α-glucosidase inhibitory activity has been assessed using an in vitro model. Moreover, mineral and phenolic contents of CS and CM were analyzed. The extracts of both species exhibited potent antioxidant activity in all used systems and possess strong inhibitory effect towards α-glucosidase (IC50: 0.95 ± 0.14 to 14.58 ± 1.26 μg/mL) and significant inhibitory potential against α-amylase (IC50: 217.10 ± 0.15 to 886.10 ± 0.10 μg/mL). Furthermore, the result showed high levels of phenolic content and unexpectedly some higher levels of mineral content in CS. The results suggest that the phenolic rich extracts of CS and CM may have a therapeutic potential against diseases associated with oxidative stress and may be useful in the management of hyperglycemia in diabetic patients.
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