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Agbodjento E, Lègba B, Dougnon VT, Klotoé JR, Déguénon E, Assogba P, Koudokpon H, Hanski L, Baba-Moussa L, Yayi Ladékan E. Unleashing the Potential of Medicinal Plants in Benin: Assessing the Status of Research and the Need for Enhanced Practices. PLANTS (BASEL, SWITZERLAND) 2023; 12:1506. [PMID: 37050132 PMCID: PMC10097054 DOI: 10.3390/plants12071506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/25/2023] [Accepted: 03/27/2023] [Indexed: 06/19/2023]
Abstract
Medicinal plants play a crucial role in the primary health care of the population in developing countries such as Benin. The national universities of Benin conduct research on the pharmacological, toxicological, and phytochemical properties of these plants, but the resulting knowledge often does not lead to the development of phytomedicines for the improvement of public health. This study aims to assess the current status of research on medicinal plants in Benin. A literature review was conducted using various search engines, and the collected data was analyzed. The results indicate that research on the biological properties of medicinal plants is still in its early stages, with limited and inadequate methodological approaches. These limitations highlight the urgent need to enhance research practices and facilitate the development of effective and safe phytomedicines.
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Affiliation(s)
- Eric Agbodjento
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Boris Lègba
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Victorien Tamègnon Dougnon
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Jean Robert Klotoé
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Esther Déguénon
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Phénix Assogba
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Hornel Koudokpon
- Research Unit in Applied Microbiology and Pharmacology of Natural Substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, Cotonou 01 PB 2009, Benin
| | - Leena Hanski
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00100 Helsinki, Finland
| | - Lamine Baba-Moussa
- Laboratory of Biology and Molecular Typing in Microbiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 05 PB 1604, Benin
| | - Eléonore Yayi Ladékan
- Laboratory of Pharmacognosy and Essential Oils, Faculty of Sciences and Techniques, University of Abomey-Calavi, Cotonou 01 PB 188, Benin
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de Mendonça ELSS, Fragoso MBT, de Oliveira JM, Xavier JA, Goulart MOF, de Oliveira ACM. Gestational Diabetes Mellitus: The Crosslink among Inflammation, Nitroxidative Stress, Intestinal Microbiota and Alternative Therapies. Antioxidants (Basel) 2022; 11:129. [PMID: 35052633 PMCID: PMC8773111 DOI: 10.3390/antiox11010129] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 12/30/2021] [Accepted: 01/04/2022] [Indexed: 01/09/2023] Open
Abstract
Gestational diabetes mellitus (GDM) is characterized by a set of metabolic complications arising from adaptive failures to the pregnancy period. Estimates point to a prevalence of 3 to 15% of pregnancies. Its etiology includes intrinsic and extrinsic aspects of the progenitress, which may contribute to the pathophysiogenesis of GDM. Recently, researchers have identified that inflammation, oxidative stress, and the gut microbiota participate in the development of the disease, with potentially harmful effects on the health of the maternal-fetal binomial, in the short and long terms. In this context, alternative therapies were investigated from two perspectives: the modulation of the intestinal microbiota, with probiotics and prebiotics, and the use of natural products with antioxidant and anti-inflammatory properties, which may mitigate the endogenous processes of the GDM, favoring the health of the mother and her offspring, and in a future perspective, alleviating this critical public health problem.
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Affiliation(s)
- Elaine Luiza Santos Soares de Mendonça
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
| | - Marilene Brandão Tenório Fragoso
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
| | - Jerusa Maria de Oliveira
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
| | - Jadriane Almeida Xavier
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
| | - Marília Oliveira Fonseca Goulart
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceio 57072-970, Alagoas, Brazil; (E.L.S.S.d.M.); (M.B.T.F.); (J.M.d.O.); (J.A.X.)
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Riyaphan J, Pham DC, Leong MK, Weng CF. In Silico Approaches to Identify Polyphenol Compounds as α-Glucosidase and α-Amylase Inhibitors against Type-II Diabetes. Biomolecules 2021; 11:1877. [PMID: 34944521 PMCID: PMC8699780 DOI: 10.3390/biom11121877] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 01/01/2023] Open
Abstract
Type-II diabetes mellitus (T2DM) results from a combination of genetic and lifestyle factors, and the prevalence of T2DM is increasing worldwide. Clinically, both α-glucosidase and α-amylase enzymes inhibitors can suppress peaks of postprandial glucose with surplus adverse effects, leading to efforts devoted to urgently seeking new anti-diabetes drugs from natural sources for delayed starch digestion. This review attempts to explore 10 families e.g., Bignoniaceae, Ericaceae, Dryopteridaceae, Campanulaceae, Geraniaceae, Euphorbiaceae, Rubiaceae, Acanthaceae, Rutaceae, and Moraceae as medicinal plants, and folk and herb medicines for lowering blood glucose level, or alternative anti-diabetic natural products. Many natural products have been studied in silico, in vitro, and in vivo assays to restrain hyperglycemia. In addition, natural products, and particularly polyphenols, possess diverse structures for exploring them as inhibitors of α-glucosidase and α-amylase. Interestingly, an in silico discovery approach using natural compounds via virtual screening could directly target α-glucosidase and α-amylase enzymes through Monte Carto molecular modeling. Autodock, MOE-Dock, Biovia Discovery Studio, PyMOL, and Accelrys have been used to discover new candidates as inhibitors or activators. While docking score, binding energy (Kcal/mol), the number of hydrogen bonds, or interactions with critical amino acid residues have been taken into concerning the reliability of software for validation of enzymatic analysis, in vitro cell assay and in vivo animal tests are required to obtain leads, hits, and candidates in drug discovery and development.
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Affiliation(s)
| | - Dinh-Chuong Pham
- Biomaterials and Nanotechnology Research Group, Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 700000, Vietnam;
| | - Max K. Leong
- Department of Chemistry, National Dong Hwa University, Hualien 97401, Taiwan
| | - Ching-Feng Weng
- Functional Physiology Section, Department of Basic Medical Science, Xiamen Medical College, Xiamen 361023, China
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Kifle ZD, Alehegn AA, Adugna BY, Mekuria AB, Enyew EF. Effect of Crude Leaves Extract of Bersama Abyssinica on Blood Glucose Level and Serum Lipid Level of Streptozotocin-Induced Diabetic Mice: Evidence for In vivo Antidiabetic Activity. Cardiovasc Hematol Agents Med Chem 2021; 20:67-74. [PMID: 34313203 DOI: 10.2174/1871525719666210726114802] [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: 12/07/2020] [Revised: 06/17/2021] [Accepted: 06/17/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Diabetes mellitus is one of the major and common metabolic, and chronic disorders in the world. Several medicinal plants have been used globally for the management of diabetes mellitus. The current study aimed to study the anti-hyperglycemic and anti-hyperlipidemic effects of Bersama abyssinica. METHODS Antidiabetic effect of 80% methanolic crude extract of Bersama abyssinica was studied in repeated dose-treated STZ-induced diabetic mice model. The activities of Bersama abyssinica on serum lipid level and body weight were investigated on STZ-induced diabetic mice. Data were analyzed using one-way ANOVA and significant when the p-value was less than 0.05. RESULTS All doses of the crude 80% methanolic extract of Bersama abyssinica (100 mg/kg, 200 mg/kg, and 400 mg/kg) exhibited a noticeable BGL reduction when compared with baseline blood glucose level and diabetic control on the 7th and 14th days of administration. Moreover, the higher dose of the extract (at 400 mg/kg) significantly (p < 0.001, 54.3%) decreased the BGL in STZ-induced diabetic mice. The maximum decrement in fasting BGL was achieved at the 14th days: 34.92%, 41.10%, 54.30%, and 59.66%, respectively for BAC 100 mg/kg, BAC 200 mg/kg, BAC 400 mg/kg, and GLC 5 mg/kg treated groups. Bersama abyssinica also displayed a significant (p < 0.05) improvement of serum lipid levels and body weight. CONCLUSION Bersama abyssinica crude extract exhibited a significant antidiabetic effect and prevented body weight loss in streptozotocin-induced diabetic mice. The finding also confirmed the valuable biochemical activity of Bersama abyssinica by improving serum lipid levels.
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Affiliation(s)
- Zemene Demelash Kifle
- Department of Pharmacology, School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar. Ethiopia
| | | | - Baye Yrga Adugna
- Department of pharmacy, Bahir Dar Health Science College, Bahir Dar. Ethiopia
| | - Abebe Basazn Mekuria
- Department of Pharmacology, School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Gondar. Ethiopia
| | - Engidaw Fentahun Enyew
- Department of Human Anatomy, School of Medicine, College of Medicine and Health Sciences, Gondar. Ethiopia
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Protective Role of Picralima nitida Seed Extract in High-Fat High-Fructose-Fed Rats. Adv Pharmacol Pharm Sci 2020; 2020:5206204. [PMID: 33163962 PMCID: PMC7604582 DOI: 10.1155/2020/5206204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 09/22/2020] [Accepted: 10/03/2020] [Indexed: 12/23/2022] Open
Abstract
Picralima nitida is a therapeutic herb used in ethnomedicine for the management of several disease conditions including diabetes. This study examined the potential palliative effect of aqueous seed extract of Picralima nitida (APN) on dyslipidemia, hyperglycemia, oxidative stress, insulin resistance, and the expression of some metabolic genes in high-fat high-fructose-fed rats. Experimental rats (2 months old) were fed a control diet or a high-fat diet with 25% fructose (HFHF diet) in their drinking water for nine weeks. APN was administered orally during the last four weeks. Anthropometric and antioxidant parameters, lipid profile, plasma glucose, and insulin levels and the relative expression of some metabolic genes were assessed. APN caused a significant decrease (P < 0.05) in weight gained, body mass index, insulin resistance, plasma glucose, and insulin levels. High-density lipoprotein cholesterol level was significantly increased (P < 0.05), while triacylglycerol, cholesterol, low-density lipoprotein, cardiac index, atherogenic index, coronary artery index, and malondialdehyde levels in plasma and liver samples were also significantly decreased (P < 0.05) by APN at all experimental doses when compared to the group fed with an HFHF diet only. APN also significantly (P < 0.05) upregulated the relative expression of glucokinase, carnitine palmitoyltransferase-1 (CPT-1), and leptin at 400 mg/kg body weight when compared to the group fed with an HFHF diet only. This study showed that APN alleviated dyslipidemia, hyperglycemia, and oxidant effect associated with the intake of a high-fat high-fructose diet.
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The lyophilized aqueous leaf extract of Moringa oleifera blunts streptozocin-induced diabetes in rats through upregulation of GLUT 4 signaling pathway and anti-oxidant effect. SCIENTIFIC AFRICAN 2020. [DOI: 10.1016/j.sciaf.2020.e00619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Sangija F, Wu W. Bamboo Wine: Its Production Technology and Potential as a Sustainable Health Beverage. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1810699] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Frank Sangija
- College of Food Science, Southwest University, Beibei, Chongqing, PRC
- School of Food Biotechnology and Nutritional Sciences, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania
| | - Wenbiao Wu
- College of Food Science, Southwest University, Beibei, Chongqing, PRC
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Kuriya K, Nishio M, Ono N, Masuda Y, Katsuzaki H, Kondo S, Sono J, Nakamura M, Umekawa H. Isolation and Characterization of Antihyperglycemic Compounds from Vigna angularis Extracts. J Food Sci 2019; 84:3172-3178. [PMID: 31613007 DOI: 10.1111/1750-3841.14840] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 08/29/2019] [Accepted: 09/13/2019] [Indexed: 11/28/2022]
Abstract
Functional foods that inhibit α-amylase and α-glucosidase activity are effective for regulating the blood glucose level and preventing hyperglycemia. Extracts of adzuki beans (ABs, Vigna angularis), widely eaten in East Asia, can inhibit α-amylase and α-glucosidase activity. In this study, we identified and evaluated the components in an AB water extract (ABWE) after boiling, which is an essential process for cooking ABs. The ABWE before boiling inhibited α-amylase and α-glucosidase activity and the boiled ABWE showed slightly stronger inhibitory effects. High-performance liquid chromatography, liquid chromatography-mass spectrometry, and nuclear magnetic resonance analyses identified (+)-catechin 7-O-β-d-glucopyranoside (C7G), (+)-epicatechin 7-O-β-d-glucopyranoside (E7G), and (+)-catechin as the bioactive components in boiled ABWE. Interestingly, the quantity of E7G significantly increased after boiling (from 0% to 17.1 ± 1.3%). E7G showed stronger inhibition of α-amylase and α-glucosidase than C7G; the IC50 values for α-amylase were 0.74 ± 0.04 mg/mL (C7G) and 0.40 ± 0.09 mg/mL (E7G), and for α-glucosidase the IC50 values were 0.085 ± 0.032 mg/mL (C7G) and 0.051 ± 0.007 mg/mL (E7G). Our findings suggest that C7G and E7G are the main active components in ABWE as they inhibit α-amylase and α-glucosidase and their inhibitory effect is not lost after boiling. These results support the effectiveness of boiled ABs in the promotion of health. PRACTICAL APPLICATION: We identified (+)-catechin 7-O-β-d-glucopyranoside (C7G), (+)-epicatechin 7-O-β-d-glucopyranoside (E7G), and (+)-catechin in adzuki bean extracts and commercially available boiled adzuki bean products. Interestingly, the E7G content was increased by boiling, and this compound showed strong inhibitory activity toward α-amylase and α-glucosidase. These results support the consumption of boiled adzuki beans to prevent acute rises in blood glucose level.
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Affiliation(s)
- Kenji Kuriya
- Dept. of Life Sciences, Graduate School of Bioresources, Mie Univ., 1577 Kurimamachiya, Tsu, Mie 514-8507, Japan
| | - Masahiro Nishio
- Dept. of Life Sciences, Graduate School of Bioresources, Mie Univ., 1577 Kurimamachiya, Tsu, Mie 514-8507, Japan
| | - Nanako Ono
- Dept. of Life Sciences, Graduate School of Bioresources, Mie Univ., 1577 Kurimamachiya, Tsu, Mie 514-8507, Japan
| | - Yuichi Masuda
- Dept. of Life Sciences, Graduate School of Bioresources, Mie Univ., 1577 Kurimamachiya, Tsu, Mie 514-8507, Japan
| | - Hirotaka Katsuzaki
- Dept. of Life Sciences, Graduate School of Bioresources, Mie Univ., 1577 Kurimamachiya, Tsu, Mie 514-8507, Japan
| | - Shuji Kondo
- Imuraya Co. Ltd., 7-1-1 Takachaya, Tsu, Mie 514-8530, Japan
| | - Junpei Sono
- Imuraya Co. Ltd., 7-1-1 Takachaya, Tsu, Mie 514-8530, Japan
| | | | - Hayato Umekawa
- Dept. of Life Sciences, Graduate School of Bioresources, Mie Univ., 1577 Kurimamachiya, Tsu, Mie 514-8507, Japan
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Chemical characterization and bioactivity of Trichosanthes dioica edible shoot extract. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s13596-018-0310-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Bading Taika B, Bouckandou M, Souza A, Bourobou Bourobou HP, MacKenzie LS, Lione L. An overview of anti-diabetic plants used in Gabon: Pharmacology and toxicology. JOURNAL OF ETHNOPHARMACOLOGY 2018; 216:203-228. [PMID: 29305175 DOI: 10.1016/j.jep.2017.12.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 12/24/2017] [Accepted: 12/25/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The management of diabetes mellitus management in African communities, especially in Gabon, is not well established as more than 60% of population rely on traditional treatments as primary healthcare. The aim of this review was to collect and present the scientific evidence for the use of medicinal plants that are in currect by Gabonese traditional healers to manage diabetes or hyperglycaemia based here on the pharmacological and toxicological profiles of plants with anti-diabetic activity. There are presented in order to promote their therapeutic value, ensure a safer use by population and provide some bases for further study on high potential plants reviewed. MATERIALS AND METHODS Ethnobotanical studies were sourced using databases such as Online Wiley library, Pubmed, Google Scholar, PROTA, books and unpublished data including Ph.D. and Master thesis, African and Asian journals. Keywords including 'Diabetes', 'Gabon', 'Toxicity', 'Constituents', 'hyperglycaemia' were used. RESULTS A total of 69 plants currently used in Gabon with potential anti-diabetic activity have been identified in the literature, all of which have been used in in vivo or in vitro studies. Most of the plants have been studied in human or animal models for their ability to reduce blood glucose, stimulate insulin secretion or inhibit carbohydrates enzymes. Active substances have been identified in 12 out of 69 plants outlined in this review, these include Allium cepa and Tabernanthe iboga. Only eight plants have their active substances tested for anti-diabetic activity and are suitables for further investigation. Toxicological data is scarce and is dose-related to the functional parameters of major organs such as kidney and liver. CONCLUSION An in-depth understanding on the pharmacology and toxicology of Gabonese anti-diabetic plants is lacking yet there is a great scope for new treatments. With further research, the use of Gabonese anti-diabetic plants is important to ensure the safety of the diabetic patients in Gabon.
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Affiliation(s)
- B Bading Taika
- Department of Pharmacy, Pharmacology and Postgraduate Medicine, School of Life and Medical Sciences, University of Hertfordshire, UK; IPHAMETRA Institute, Pharmacology and Toxicology Department, CENAREST, Libreville, Gabon.
| | - M Bouckandou
- IPHAMETRA Institute, Pharmacology and Toxicology Department, CENAREST, Libreville, Gabon
| | - A Souza
- Institut National Supérieur d'Agronomie et de Biotechnologies (INSAB), Franceville, Gabon
| | - H P Bourobou Bourobou
- IPHAMETRA Institute, Pharmacology and Toxicology Department, CENAREST, Libreville, Gabon
| | - L S MacKenzie
- Department of Pharmacy, Pharmacology and Postgraduate Medicine, School of Life and Medical Sciences, University of Hertfordshire, UK
| | - L Lione
- Department of Pharmacy, Pharmacology and Postgraduate Medicine, School of Life and Medical Sciences, University of Hertfordshire, UK
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Haudecoeur R, Peuchmaur M, Pérès B, Rome M, Taïwe GS, Boumendjel A, Boucherle B. Traditional uses, phytochemistry and pharmacological properties of African Nauclea species: A review. JOURNAL OF ETHNOPHARMACOLOGY 2018; 212:106-136. [PMID: 29045823 DOI: 10.1016/j.jep.2017.10.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 09/28/2017] [Accepted: 10/13/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOALOGICAL RELEVANCE The genus Nauclea in Africa comprises seven species. Among them, N. latifolia, N. diderrichii and N. pobeguinii are widely used by the local population in traditional remedies. Preparation from various parts of plants (e.g. roots, bark, leaves) are indicated by traditional healers for a wide range of diseases including malaria, pain, digestive ailments or metabolic diseases. MATERIALS AND METHODS A literature search was conducted on African species of the genus Nauclea using scientific databases such as Google Scholar, Pubmed or SciFinder. Every document of ethnopharmacological, phytochemical or pharmacological relevance and written in English or French were analyzed. RESULTS AND DISCUSSION The Nauclea genus is used as ethnomedicine all along sub-Saharan Africa. Several local populations consider Nauclea species as a major source of remedies for malaria. In this regard, two improved traditional medicines are currently under development using extracts from N. latifolia and N. pobeguinii. Concerning the chemical composition of the Nauclea genus, indoloquinolizidines alkaloids could be considered as the major class of compounds as they are reported in every analyzed Nauclea species, with numerous structures identified. Based on traditional indications a considerable amount of pharmacological studies were conducted to ensure activity and attempt to link them to the presence of particular compounds in plant extracts. CONCLUSION Many experimental studies using plant extracts of the African species of the genus Nauclea validate traditional indications (e.g. malaria and pain). However, bioactive compounds are rarely identified and therefore, there is a clear need for further evaluations as well as for toxicity experiments. The sustainability of these plants, especially of N. diderrichii, a threatened species, should be kept in mind to adapt local uses and preparation modes of traditional remedies.
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Affiliation(s)
- Romain Haudecoeur
- Univ. Grenoble Alpes, DPM UMR 5063, F-38041 Grenoble, France; CNRS, DPM UMR 5063, F-38041 Grenoble, France
| | - Marine Peuchmaur
- Univ. Grenoble Alpes, DPM UMR 5063, F-38041 Grenoble, France; CNRS, DPM UMR 5063, F-38041 Grenoble, France
| | - Basile Pérès
- Univ. Grenoble Alpes, DPM UMR 5063, F-38041 Grenoble, France; CNRS, DPM UMR 5063, F-38041 Grenoble, France
| | - Maxime Rome
- Univ. Grenoble Alpes, SAJF UMS 3370, F-38041 Grenoble, France; CNRS, SAJF UMS 3370, F-38041 Grenoble, France
| | | | - Ahcène Boumendjel
- Univ. Grenoble Alpes, DPM UMR 5063, F-38041 Grenoble, France; CNRS, DPM UMR 5063, F-38041 Grenoble, France
| | - Benjamin Boucherle
- Univ. Grenoble Alpes, DPM UMR 5063, F-38041 Grenoble, France; CNRS, DPM UMR 5063, F-38041 Grenoble, France.
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Fachinan R, Yessoufou A, Nekoua MP, Moutairou K. Effectiveness of Antihyperglycemic Effect of Momordica charantia: Implication of T-Cell Cytokines. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2017; 2017:3707046. [PMID: 29317893 PMCID: PMC5727634 DOI: 10.1155/2017/3707046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/04/2017] [Accepted: 11/12/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND/OBJECTIVE We investigate the effect of antidiabetic Momordica charantia fruit juice on T cells' differentiation, through plasmatic cytokine quantification in type 1 diabetic rats (T1D). METHODS Male Wistar rats were rendered diabetic by the injection of five low doses of streptozotocin. Then, animals were treated with Momordica charantia fruit juice for 28 consecutive days. Plasmatic levels of Th1 interleukin- (IL-) 02 and interferon- (IFN-) γ, Th2 (IL-4), and regulatory (IL-10) cytokines were determined in rats. RESULTS We observed that fruit juice induced a significant decrease in blood glucose of T1D rats. Besides, the concentrations of IL-2 and IFN-γ significantly increased while those of IL-4 and IL-10 diminished in diabetic rats compared to control animals. Interestingly, after treatment with Momordica charantia fruit juice, IL-4 and IL-10 levels significantly increased in diabetic rats, while IL-2 and IFN-γ concentrations decreased, suggesting a Th2 phenotype in these animals. Phytochemical analysis of the fruit juice revealed the presence of tannins, flavonoids, and coumarins, compounds which possess antioxidant activity. CONCLUSION This study shows that Momordica charantia fruit juice, by lowering the hyperglycemia, induced a shift of proinflammatory Th1 phenotype in T1D rats towards a favorable anti-inflammatory Th2 status. These effects might be due to the presence of antioxidant compounds in the juice and confirms the use of this plant in the treatment of autoimmune type 1 diabetes.
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Affiliation(s)
- Rufine Fachinan
- Laboratory of Cell Biology and Physiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Technology (FAST) and Institute of Applied Biomedical Sciences (ISBA), University of Abomey-Calavi, 01 BP 918 Cotonou, Benin
| | - Akadiri Yessoufou
- Laboratory of Cell Biology and Physiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Technology (FAST) and Institute of Applied Biomedical Sciences (ISBA), University of Abomey-Calavi, 01 BP 918 Cotonou, Benin
| | - Magloire Pandoua Nekoua
- Laboratory of Cell Biology and Physiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Technology (FAST) and Institute of Applied Biomedical Sciences (ISBA), University of Abomey-Calavi, 01 BP 918 Cotonou, Benin
| | - Kabirou Moutairou
- Laboratory of Cell Biology and Physiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Technology (FAST) and Institute of Applied Biomedical Sciences (ISBA), University of Abomey-Calavi, 01 BP 918 Cotonou, Benin
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Fachinan R, Fagninou A, Nekoua MP, Amoussa AM, Adjagba M, Lagnika L, Lalèyè A, Moutairou K, Yessoufou A. Evidence of Immunosuppressive and Th2 Immune Polarizing Effects of Antidiabetic Momordica charantia Fruit Juice. BIOMED RESEARCH INTERNATIONAL 2017; 2017:9478048. [PMID: 28812026 PMCID: PMC5547716 DOI: 10.1155/2017/9478048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 06/18/2017] [Indexed: 12/23/2022]
Abstract
The mechanism of action of the antidiabetic capacity of Momordica charantia is still under investigation. Here, we assessed phytochemical compositions, antioxidant activity, and effects of total and filtered fruit and leafy stem juices of Momordica charantia on human T cell proliferation and differentiation through quantification of Th1/Th2 cytokines. In the absence of stimulation, total fruit and leafy stem juices induced significant T cell proliferation. Under PHA stimulation, both juices potentiated plant-induced T cell proliferation. However, the filtered fruit and leafy stem juices significantly inhibited PHA-stimulated T cell proliferation, while neither juice influenced T cell proliferation. Moreover, total and filtered fruit juice increased IL-4 secretion, while total and filtered leafy stem juice enhanced IFN-γ production. Phytochemical screening revealed the presence of tannins, flavonoids, anthocyans, steroids, and triterpenoids in both juices. Alkaloids, quinone derivatives, cardenolides, and cyanogenic derivatives were undetectable. The saponins present in total juices were undetectable after filtration. Moreover, both juices had appreciable antioxidant capacity. Our study supports the type 1 antidiabetic effect of filtered fruit juice of M. charantia which may be related to its immunosuppressive and T-helper 2 cell inducing capacities. Due to their immune-stimulatory activities and their ability to increase T-helper 1 cell cytokines, total fruit and leafy stem juices may serve in the treatment of immunodeficiency and certain infections.
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Affiliation(s)
- Rufine Fachinan
- Laboratory of Cell Biology and Physiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Technology (FAST) and Institute of Applied Biomedical Sciences (ISBA), University of Abomey-Calavi, 01 BP 918 Cotonou, Benin
| | - Adnette Fagninou
- Laboratory of Cell Biology and Physiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Technology (FAST) and Institute of Applied Biomedical Sciences (ISBA), University of Abomey-Calavi, 01 BP 918 Cotonou, Benin
| | - Magloire Pandoua Nekoua
- Laboratory of Cell Biology and Physiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Technology (FAST) and Institute of Applied Biomedical Sciences (ISBA), University of Abomey-Calavi, 01 BP 918 Cotonou, Benin
| | - Abdou Madjid Amoussa
- Laboratory of Biochemistry and Bioactive Natural Substances, Faculty of Science and Technology, University of Abomey-Calavi, Cotonou, Benin
| | - Marius Adjagba
- Laboratory of Human Cytogenetics, UFR of Human Biology, Faculty of Health Sciences, University of Abomey-Calavi, Cotonou, Benin
| | - Latifou Lagnika
- Laboratory of Biochemistry and Bioactive Natural Substances, Faculty of Science and Technology, University of Abomey-Calavi, Cotonou, Benin
| | - Anatole Lalèyè
- Laboratory of Human Cytogenetics, UFR of Human Biology, Faculty of Health Sciences, University of Abomey-Calavi, Cotonou, Benin
| | - Kabirou Moutairou
- Laboratory of Cell Biology and Physiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Technology (FAST) and Institute of Applied Biomedical Sciences (ISBA), University of Abomey-Calavi, 01 BP 918 Cotonou, Benin
| | - Akadiri Yessoufou
- Laboratory of Cell Biology and Physiology, Department of Biochemistry and Cellular Biology, Faculty of Sciences and Technology (FAST) and Institute of Applied Biomedical Sciences (ISBA), University of Abomey-Calavi, 01 BP 918 Cotonou, Benin
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Agnaniet H, Mbot EJ, Keita O, Fehrentz JA, Ankli A, Gallud A, Garcia M, Gary-Bobo M, Lebibi J, Cresteil T, Menut C. Antidiabetic potential of two medicinal plants used in Gabonese folk medicine. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:71. [PMID: 26906899 PMCID: PMC4763413 DOI: 10.1186/s12906-016-1052-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 02/16/2016] [Indexed: 01/02/2023]
Abstract
BACKGROUND Diabetes mellitus is a metabolic disorder which is rising globally in rich and developing countries. In the African region this rate is the highest, with 20 million diagnosed diabetics. Despite a noticeable progress in the treatment of diabetes mellitus by synthetic drugs, the search for new natural anti-diabetic agents is going on. Nauclea diderrichii (De Wild.) Merr. (ND) and Sarcocephalus pobeguinii Hua ex Pellegr. (SP) are used as traditional medicines in Gabon for the treatment of different diseases, especially in the case of diabetes. The aim of this study was to evaluate the antidiabetic potential of these two medicinal plants traditionally used in Gabon. METHODS Pharmacological (inhibitory action on α and β-glucosidases) and toxicological (effect on human T cell proliferation) studies were conducted on aqueous extracts of ND (leaves and bark) and SP (bark) collected in Gabon. All raw extracts were analyzed by HPTLC and their content in phenolic compounds was determined by using standard method. The most active extracts were submitted to preparative HPLC in order to evidence the most efficient subfractions by biological evaluation. RESULTS The results showed that two extracts from ND were potent α-glucosidase inhibitors, the leaf extract being more active that the bark extract: the first one was more than 60 fold more active than Acarbose, which is an oral medication used to treat type 2 diabetes; the extract from SP bark was less efficient. The HPLC subfractions of the extracts of ND leaves and SP bark were tested in the same experimental conditions. In each case, the most active subfractions still show very potent inhibitory effect on α-glucosidase (80-90% inhibition at 0.1 mg/mL). The most efficient extract, from ND leaves, was also characterized by the highest percentage of phenolic compounds, which suggests a relationship between its inhibitory potential on α-glucosidase and its content in phenolic compounds. Conversely, only a moderate inhibitory activity of the three extracts was observed on β-glucosidase. CONCLUSION These results clearly indicated that active compounds present in N. diderrichii and S. pobeguinii leaves or/and bark were selective and highly potent inhibitors of α-glucosidase and validate their popular use for the treatment of diabetes.
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Affiliation(s)
- Huguette Agnaniet
- />Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, Faculté des Sciences B.P. 943, Franceville, Gabon
| | - Elvis Jolinom Mbot
- />Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, Faculté des Sciences B.P. 943, Franceville, Gabon
| | - Ousmane Keita
- />Institut des Sciences Appliquées (ISA)-Département de Génie Biologique (GB)-Biochimie-Université des Sciences, des Techniques et des Technologies de Bamako (USTTB) BPE, 423 Bamako - Hamdallaye ACI 2000 - Rue : 405, Porte, 359 Mali
| | - Jean-Alain Fehrentz
- />Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-Université Montpellier-ENSCM, Bâtiment E, Faculté de Pharmacie, 15, avenue Charles Flahault BP14491, 34093 Montpellier, cedex 5 France
| | - Anita Ankli
- />CAMAG Laboratory, Sonnenmattstrasse 11, 4132 Muttenz, Switzerland
| | - Audrey Gallud
- />Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-Université Montpellier-ENSCM, Bâtiment E, Faculté de Pharmacie, 15, avenue Charles Flahault BP14491, 34093 Montpellier, cedex 5 France
| | - Marcel Garcia
- />Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-Université Montpellier-ENSCM, Bâtiment E, Faculté de Pharmacie, 15, avenue Charles Flahault BP14491, 34093 Montpellier, cedex 5 France
| | - Magali Gary-Bobo
- />Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-Université Montpellier-ENSCM, Bâtiment E, Faculté de Pharmacie, 15, avenue Charles Flahault BP14491, 34093 Montpellier, cedex 5 France
| | - Jacques Lebibi
- />Laboratoire de Substances Naturelles et de Synthèses Organométalliques (LASNSOM), Université des Sciences et Techniques de Masuku, Faculté des Sciences B.P. 943, Franceville, Gabon
| | - Thierry Cresteil
- />CIBLOT, IPSIT - IFR141, 5 rue Jean Baptiste Clément, 92290 Chatenay-Malabry, France
| | - Chantal Menut
- />Institut des Biomolécules Max Mousseron (IBMM) UMR 5247 CNRS-Université Montpellier-ENSCM, Bâtiment E, Faculté de Pharmacie, 15, avenue Charles Flahault BP14491, 34093 Montpellier, cedex 5 France
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15
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Erharuyi O, Falodun A, Langer P. Medicinal uses, phytochemistry and pharmacology of Picralima nitida (Apocynaceae) in tropical diseases: a review. ASIAN PAC J TROP MED 2014; 7:1-8. [PMID: 24418074 DOI: 10.1016/s1995-7645(13)60182-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 11/15/2013] [Accepted: 12/15/2013] [Indexed: 10/25/2022] Open
Abstract
Picralima nitida Durand and Hook, (fam. Apocynaceae) is a West African plant with varied applications in African folk medicine. Various parts of the plant have been employed ethnomedicinally as remedy for fever, hypertension, jaundice, dysmenorrheal, gastrointestinal disorders and malaria. In order to reveal its full pharmacological and therapeutic potentials, the present review focuses on the current medicinal uses, phytochemistry, pharmacological and toxicological activities of this species. Literature survey on scientific journals, books as well as electronic sources have shown the isolation of alkaloids, tannins, polyphenols and steroids from different parts of the plant, pharmacological studies revealed that the extract or isolated compounds from this species posses analgesic, anti-inflammatory, hypoglyceamic, hypotensive, antiplasmodial, antimicrobial, antiulcer and antitumorigenic activities. Results from various scientific investigations to date have revealed the potential of the extract from the plant or isolated compounds for use in the treatment and prevention of various kinds of human diseases. However, further studies on the extracts and pure compounds from this species is required to completely assess its phytochemical, pharmacological and toxicological profile as well as the mechanism of action behind these pharmacological activities exhibited by the compounds isolated from this species.
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Affiliation(s)
- Osayemwenre Erharuyi
- Institute of Chemistry, University of Rostock, Albert-Einstein-Str. 3A, 18059 Rostock, Germany
| | - Abiodun Falodun
- Institute of Chemistry, University of Rostock, Albert-Einstein-Str. 3A, 18059 Rostock, Germany; Department of Pharmacognosy, School of Pharmacy, University of Mississippi, 38655 Oxford, Mississippi, USA.
| | - Peter Langer
- Institute of Chemistry, University of Rostock, Albert-Einstein-Str. 3A, 18059 Rostock, Germany
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Olajide OA, Velagapudi R, Okorji UP, Sarker SD, Fiebich BL. Picralima nitida seeds suppress PGE2 production by interfering with multiple signalling pathways in IL-1β-stimulated SK-N-SH neuronal cells. JOURNAL OF ETHNOPHARMACOLOGY 2014; 152:377-383. [PMID: 24491645 DOI: 10.1016/j.jep.2014.01.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 12/19/2013] [Accepted: 01/24/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The dried seed of Picralima nitida is used in rheumatic fever and as an antipyretic in West Africa. In this study we have investigated the effects of an extract obtained from the seeds of Picralima nitida (PNE) on PGE2 production in IL-1β-stimulated cells. MATERIALS AND METHODS Prostaglandin E2 (PGE2) was measured in supernatants of IL-1β-stimulated SK-N-SH cells using enzyme immunoassay (EIA) for PGE2. In Cell ELISA and western blot were used to evaluate the effects of PNE on protein expressions of COX-2, mPGES-1, IκB and IKK. To determine the effect of the extract on NF-κB transactivation, a reporter gene assay was carried out in HEK293 cells stimulated with TNFα. An ELISA was used to measure the roles of p38, ERK1/2 and JNK Mitogen Activated Protein Kinases (MAPKs) on anti-neuroinflammatory actions of PNE. RESULTS Results show that PNE significantly inhibited PGE2 production, as well as COX-2 and mPGES-1 protein expressions in IL-1β-stimulated SK-N-SH cells. Molecular targeting experiments showed that PNE interfered with NF-κB signalling pathway through attenuation of TNFα-stimulated NF-κB transcriptional activation in HEK 293 cells. Furthermore, IL-1β-mediated phosphorylation of IκB and IKK were inhibited in SK-N-SH cells. PNE (50-200 μg/ml) also produced significant inhibition of IL-1β-induced p38 MAPK phosphorylation in SK-N-SH cells. However, phosphorylation of ERK1/2 and JNK MAPKs were achieved at 100 and 200 μg/ml of the extract. CONCLUSIONS Taken together, these results clearly demonstrate that Picralima nitida suppresses PGE2 production by targeting multiple pathways involving NF-κB and MAPK signalling in IL-1β-stimulated SK-N-SH neuronal cells.
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Affiliation(s)
- Olumayokun A Olajide
- Division of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom.
| | - Ravikanth Velagapudi
- Division of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom
| | - Uchechukwu P Okorji
- Division of Pharmacy, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom
| | - Satyajit D Sarker
- Department of Pharmacy, School of Applied Sciences, University of Wolverhampton, Wulfruna Street, Wolverhampton WV1 1LY, United Kingdom
| | - Bernd L Fiebich
- Neurochemistry Research Laboratory, Department of Psychiatry and Psychotherapy, University of Freiburg Medical School, Hauptstrasse 5, 79104 Freiburg, Germany; VivaCell Biotechnology GmbH, Ferdinand-Porsche-Street 5, D-79211 Denzlingen, Germany
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