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Baldé MA, Tuenter E, Matheeussen A, Traoré MS, Cos P, Maes L, Camara A, Diallo MST, Baldé ES, Balde AM, Pieters L, Foubert K. Bioassay-guided isolation of antiplasmodial and antimicrobial constituents from the roots of Terminalia albida. J Ethnopharmacol 2021; 267:113624. [PMID: 33246123 DOI: 10.1016/j.jep.2020.113624] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/20/2020] [Accepted: 11/22/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Terminalia albida (Combretaceae), widely used in Guinean traditional medicine, showed promising activity against Plasmodium falciparum and Candida albicans in previous studies. Bioassay-guided fractionation was carried out in order to isolate the compounds responsible for these activities. MATERIALS AND METHODS Fractionation and isolation were performed by flash chromatography, followed by semi-preparative HPLC-DAD-MS. The structural elucidation of the isolated compounds was carried out by 1D and 2D NMR as well as HR-ESI-MS. Isolated compounds were evaluated against Plasmodium falciparum, Candida albicans, Staphylococcus aureus and Escherichia coli, and their cytotoxicity against MRC-5 cells was determined. RESULTS Bioassay-guided fractionation of Terminalia albida root resulted in the isolation of 14 compounds (1-14), and their antimicrobial properties were evaluated. Pantolactone (1) (IC50 0.60 ± 0.03 μM) demonstrated significant activity against P. falciparum. Other compounds, including 3,4,3'-tri-O-methyl-ellagic acid (3), the triterpenes arjunolic acid (5), arjungenin (6), arjunic acid (7) and arjunglucoside II (10), and the phenol glycoside calophymembranside-B (14), were less active and showed IC50 values in the range 5-15 μM. None of the tested compound showed antibacterial or antifungal activity. CONCLUSION These results may explain at least in part the activity of the root extract of T. albida against P. falciparum.
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Affiliation(s)
- Mamadou Aliou Baldé
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - Emmy Tuenter
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - An Matheeussen
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - Mohamed Sahar Traoré
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP, 1017, Guinea; Research and Valorization Center on Medicinal Plants Dubreka, BP, 6411, Conakry, Guinea
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - Aïssata Camara
- Research and Valorization Center on Medicinal Plants Dubreka, BP, 6411, Conakry, Guinea
| | | | - Elhadj Saïdou Baldé
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP, 1017, Guinea
| | - Aliou Mamadou Balde
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP, 1017, Guinea; Research and Valorization Center on Medicinal Plants Dubreka, BP, 6411, Conakry, Guinea
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium.
| | - Kenn Foubert
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
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Baldé MA, Tuenter E, Traoré MS, Matheeussen A, Cos P, Maes L, Camara A, Haba NL, Gomou K, Diallo MST, Baldé ES, Pieters L, Balde AM, Foubert K. Antimicrobial investigation of ethnobotanically selected guinean plant species. J Ethnopharmacol 2020; 263:113232. [PMID: 32768641 DOI: 10.1016/j.jep.2020.113232] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 07/28/2020] [Accepted: 07/29/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In Guinea, medicinal plants play an important role in the management of infectious diseases including urinary disorders, skin diseases and oral diseases. This study was carried out to collect medicinal plant species employed for the treatment of these diseases and to investigate their antimicrobial potential. MATERIALS AND METHODS Based on an ethnobotanical investigation carried out in three Guinean regions, 74 traditional healers and 28 herbalists were interviewed and medicinal plants were collected. The most quoted plant species were evaluated for their antimicrobial activities against Staphylococcus aureus, Escherichia coli, Candida albicans, and in addition against Plasmodium falciparum. RESULTS A total of 112 plant species belonging to 102 genera distributed over 42 botanical families were inventoried. Among the selected plant species, promising activities against C. albicans were obtained for the methanolic extracts of the stem bark of Terminalia albida (IC50 1.2 μg/ml), the leaves of Tetracera alnifolia (IC50 1.6 μg/ml) and the root bark of Swartzia madagascariensis (IC50 7.8 μg/ml). The highest activity against S. aureus was obtained for the dichloromethane extracts of the leaves of Pavetta crassipes (IC50 8.5 μg/ml) and the root of Swartzia madagascariensis (IC50 12.8 μg/ml). Twenty one extracts, obtained from twelve plant species, were strongly active against Plasmodium falciparum, including the dichloromethane extracts of the root and stem bark of Terminalia albida root (IC50 0.6 and 0.8 μg/ml), the leaves of Landolphia heudelotii (IC50 0.5 μg/ml), the stem bark of Combretum paniculatum (IC50 0.4 μg/ml) and the leaves of Gardenia ternifolia (IC50 1.3 μg/ml). CONCLUSION The present study provides a comprehensive overview of medicinal plants employed by Guinean traditional healers for the treatment of various microbial diseases, including urinary disorders, skin diseases and oral diseases. Some of the studied plant species showed promising antimicrobial activity and could be considered as a potential source for the development of new antifungal and/or antimalarial agents.
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Affiliation(s)
- Mamadou Aliou Baldé
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - Emmy Tuenter
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - Mohamed Sahar Traoré
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP, 1017, Guinea; Research and Valorization Center on Medicinal Plants Dubreka, BP, 6411, Conakry, Guinea
| | - An Matheeussen
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - Aïssata Camara
- Research and Valorization Center on Medicinal Plants Dubreka, BP, 6411, Conakry, Guinea
| | | | - Kalaya Gomou
- Faculty of Sciences, University of Kankan, Guinea
| | | | - Elhadj Saïdou Baldé
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP, 1017, Guinea
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium.
| | - Aliou Mamadou Balde
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP, 1017, Guinea; Research and Valorization Center on Medicinal Plants Dubreka, BP, 6411, Conakry, Guinea
| | - Kenn Foubert
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
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Diallo MST, Traore MS, Balde MA, Camara AK, Baldé ES, Traore S, Oulare K, Diallo TS, Laurent S, Muller RN, Tuenter E, Pieters L, Balde AM. Prevalence, management and ethnobotanical investigation of hypertension in two Guinean urban districts. J Ethnopharmacol 2019; 231:73-79. [PMID: 30056206 DOI: 10.1016/j.jep.2018.07.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 07/04/2018] [Accepted: 07/25/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hypertension is an important public health challenge in low- and middle-income countries, and in many African countries including Guinea medicinal plants are still widely used for its treatment. MATERIALS AND METHODS The objective of this study was to determine the prevalence of hypertension in two Guinean urban districts (Pounthioun and Dowsare), to describe its management and to collect information on traditional herbal remedies. A total of 316 participants entered the study, 28.2% (89/316) men and 71.8% (227/316) women. Of these, 181 were from Dowsare (50 men and 131 women) and 135 from Pounthioun (39 men and 96 women). The mean age of subjects was 40.8 ± 14.0 years (range18 - 88years), while the majority of subjects (63.3% or 200/316) were 45-74 years old. RESULTS The overall prevalence of hypertension was 44.9% (142/316): 46.4% (84/181) from Dowsare and 43.0% (58/135) from Pounthioun. Ethnobotanical investigations among hypertensive patients led to the collection of 15 plant species, among which Hymenocardia acida leaves and Uapaca togoensis stem bark were the most cited. Phytochemical investigation of these two plant species led to the isolation and identification of isovitexin and isoorientin from H. acida, and betulinic acid and lupeol from U. togoensis. CONCLUSION The presence of these constituents in Hymenocardia acida leaves and Uapaca togoensis stem bark may at least in part support their traditional use against hypertension in Guinea.
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Affiliation(s)
- M S T Diallo
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP 1017, Guinea; Research and Valorization Center on Medicinal Plants Dubreka, BP 6411 Conakry, Guinea; Service de Chimie Générale, Organique et Biomédicale; Laboratoire de RMN et d'Imagerie Moléculaire, Université de Mons, Belgium
| | - M S Traore
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP 1017, Guinea; Research and Valorization Center on Medicinal Plants Dubreka, BP 6411 Conakry, Guinea
| | - M A Balde
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP 1017, Guinea; Research and Valorization Center on Medicinal Plants Dubreka, BP 6411 Conakry, Guinea
| | - A K Camara
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP 1017, Guinea
| | - E S Baldé
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP 1017, Guinea; Research and Valorization Center on Medicinal Plants Dubreka, BP 6411 Conakry, Guinea
| | - S Traore
- Research and Valorization Center on Medicinal Plants Dubreka, BP 6411 Conakry, Guinea
| | - K Oulare
- Research and Valorization Center on Medicinal Plants Dubreka, BP 6411 Conakry, Guinea
| | - T S Diallo
- Research and Valorization Center on Medicinal Plants Dubreka, BP 6411 Conakry, Guinea
| | - S Laurent
- Service de Chimie Générale, Organique et Biomédicale; Laboratoire de RMN et d'Imagerie Moléculaire, Université de Mons, Belgium
| | - R N Muller
- Service de Chimie Générale, Organique et Biomédicale; Laboratoire de RMN et d'Imagerie Moléculaire, Université de Mons, Belgium
| | - E Tuenter
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Belgium
| | - L Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Belgium
| | - A M Balde
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, BP 1017, Guinea; Research and Valorization Center on Medicinal Plants Dubreka, BP 6411 Conakry, Guinea.
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Baldé AM, Traoré MS, Baldé MA, Barry MS, Diallo A, Camara M, Traoré S, Kouyaté M, Traoré S, Ouo-Ouo S, Myanthé AL, Keita N, Haba NL, Goumou K, Bah F, Camara A, Diallo MST, Sylla M, Baldé ES, Diané S, Pieters L, Oularé K. Ethnomedical and ethnobotanical investigations on the response capacities of Guinean traditional health practioners in the management of outbreaks of infectious diseases: The case of the Ebola virus epidemic. J Ethnopharmacol 2016; 182:137-149. [PMID: 26900129 DOI: 10.1016/j.jep.2016.02.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 01/17/2016] [Accepted: 02/16/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The recent outbreak of Ebola virus infections has mostly remained confined to the West African countries Guinea-Conakry, Sierra-Leone and Liberia. Due to intense national and international mobilizations, a significant reduction in Ebola virus transmission has been recorded. While international efforts focus on new vaccines, medicines and diagnostics, no coherent national or international approach exists to integrate the potential of the traditional health practitioners (THPs) in the management of infectious diseases epidemics. Nevertheless, the first contact of most of the Ebola infected patients is with the THPs since the symptoms are similar to those of common traditionally treated diseases or symptoms such as malaria, hemorrhagic syndrome, typhoid or other gastrointestinal diseases, fever and vomiting. MATERIALS AND METHODS In an ethnomedical survey conducted in the 4 main Guinean regions contacts were established with a total of 113 THPs. The socio-demographic characteristics, the professional status and the traditional perception of Ebola Virus Disease (EVD) were recorded. RESULTS The traditional treatment of the main symptoms was based on 47 vegetal recipes which were focused on the treatment of diarrhea (22 recipes), fever (22 recipes), vomiting (2 recipes), external antiseptic (2 recipes), hemorrhagic syndrome (2 recipes), convulsion and dysentery (one recipe each). An ethnobotanical survey led to the collection of 54 plant species from which 44 identified belonging to 26 families. The most represented families were Euphorbiaceae, Caesalpiniaceae and Rubiaceae. Literature data on the twelve most cited plant species tends to corroborate their traditional use and to highlight their pharmacological potential. CONCLUSIONS It is worth to document all available knowledge on the traditional management of EVD-like symptoms in order to evaluate systematically the anti-Ebola potential of Guinean plant species.
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Affiliation(s)
- A M Baldé
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Département de Pharmacie, Facultéde Médecine - Pharmacie - Odonto-Stomatologie, Université Gamal Abdel Nasser de Conakry, Guinea.
| | - M S Traoré
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Département de Pharmacie, Facultéde Médecine - Pharmacie - Odonto-Stomatologie, Université Gamal Abdel Nasser de Conakry, Guinea
| | - M A Baldé
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Département de Pharmacie, Facultéde Médecine - Pharmacie - Odonto-Stomatologie, Université Gamal Abdel Nasser de Conakry, Guinea
| | - M S Barry
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Faculté des Sciences, Université Julius Nyéréréde Kankan, Guinea
| | - A Diallo
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea
| | - M Camara
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea
| | - S Traoré
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea
| | - M Kouyaté
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea
| | - S Traoré
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea
| | - S Ouo-Ouo
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea
| | - A L Myanthé
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea
| | - N Keita
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Faculté des Sciences, Université Julius Nyéréréde Kankan, Guinea
| | - N L Haba
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Faculté des Sciences, Université Julius Nyéréréde Kankan, Guinea
| | - K Goumou
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Faculté des Sciences, Université Julius Nyéréréde Kankan, Guinea
| | - F Bah
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Faculté des Sciences, Université Julius Nyéréréde Kankan, Guinea
| | - A Camara
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Département de Pharmacie, Facultéde Médecine - Pharmacie - Odonto-Stomatologie, Université Gamal Abdel Nasser de Conakry, Guinea
| | - M S T Diallo
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Département de Pharmacie, Facultéde Médecine - Pharmacie - Odonto-Stomatologie, Université Gamal Abdel Nasser de Conakry, Guinea
| | - M Sylla
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Département de Pharmacie, Facultéde Médecine - Pharmacie - Odonto-Stomatologie, Université Gamal Abdel Nasser de Conakry, Guinea
| | - E S Baldé
- Département de Pharmacie, Facultéde Médecine - Pharmacie - Odonto-Stomatologie, Université Gamal Abdel Nasser de Conakry, Guinea
| | - S Diané
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea
| | - L Pieters
- Department of Pharmaceutical Sciences, University of Antwerp, Belgium
| | - K Oularé
- Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) de Dubréka, Guinea; Faculté des Sciences, Université Julius Nyéréréde Kankan, Guinea
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Sahar Traoré M, Baldé MA, Camara A, Baldé ES, Diané S, Diallo MST, Keita A, Cos P, Maes L, Pieters L, Mamadou Baldé A. The malaria co-infection challenge: An investigation into the antimicrobial activity of selected Guinean medicinal plants. J Ethnopharmacol 2015; 174:576-581. [PMID: 25773488 DOI: 10.1016/j.jep.2015.03.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 03/03/2015] [Accepted: 03/04/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In sub-Saharan Africa, concomitant occurrence of malaria and invasive infections with micro-organisms such as Gram-positive Staphylococcus aureus, Gram-negative Escherichia coli and yeasts or fungi such as Candida albicans and Aspergillus fumigatus is common. Non-tuberculous mycobacteriosis caused by Mycobacterium chelonae has been recognized as a pulmonary pathogen with increasing frequency without effective therapy. Although less important, the high incidence of Trichophyton rubrum infections along with its ability to evade host defense mechanisms, accounts for the high prevalence of infections with this dermatophyte. Considering the treatment cost of both malaria and microbial infections, along with the level of poverty, most affected African countries are unable to cope with the burden of these diseases. In sub-Saharan Africa, many plant species are widely used in the treatment of these diseases which are traditionally diagnosed through the common symptom of fever. Therefore it is of interest to evaluate the antimicrobial activities of medicinal plants reported for their use against malaria/fever. MATERIALS AND METHODS Based on an ethnobotanical survey, 34 Guinean plant species widely used in the traditional treatment of fever and/or malaria have been collected and evaluated for their antimicrobial activities. Plants extracts were tested against Candida albicans, Trichophyton rubrum, Aspergillus fumigatus, Mycobacterium chelonae, Staphylococcus aureus and Escherichia coli. RESULTS The most interesting activities against Candida albicans were obtained for the polar extracts of Pseudospondias microcarpa and Ximenia americana with IC50 values of 6.99 and 8.12 µg/ml, respectively. The most pronounced activity against Trichophyton rubrum was obtained for the ethanol extract of Terminalia macroptera (IC50 5.59 µg/ml). Only 7 of the 51 tested extracts were active against Staphylococcus aureus. From these, the methanolic extracts of the leaves and stem bark of Alchornea cordifolia were the most active with IC50 values of 2.81 and 7.47 µg/ml, respectively. Only Terminalia albida and Lawsonia inermis showed activity against Mycobacterium chelonae. None of the tested extracts was active against Escherichia coli. CONCLUSION A number of traditional Guinean plant species used against malaria/fever showed, in addition to their antiplasmodial properties and antimicrobial activity. The fact that some plant species are involved in the traditional treatment of malaria/fever without any antiplasmodial evidence may be justified by their antimicrobial activities.
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Affiliation(s)
- Mohamed Sahar Traoré
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea; Research and Valorization Center on Medicinal Plants, Dubreka, Guinea; Laboratoire Pharmaceutique AMB-Pharma, Guinea
| | - Mamadou Aliou Baldé
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea; Research and Valorization Center on Medicinal Plants, Dubreka, Guinea; Laboratoire Pharmaceutique AMB-Pharma, Guinea
| | - Aïssata Camara
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea; Research and Valorization Center on Medicinal Plants, Dubreka, Guinea; Laboratoire Pharmaceutique AMB-Pharma, Guinea
| | | | - Sere Diané
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea
| | - Mamadou Saliou Telly Diallo
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea; Research and Valorization Center on Medicinal Plants, Dubreka, Guinea
| | - Abdoulaye Keita
- Research and Valorization Center on Medicinal Plants, Dubreka, Guinea
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Aliou Mamadou Baldé
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea; Research and Valorization Center on Medicinal Plants, Dubreka, Guinea; Laboratoire Pharmaceutique AMB-Pharma, Guinea.
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6
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Traore MS, Diane S, Diallo MST, Balde ES, Balde MA, Camara A, Diallo A, Keita A, Cos P, Maes L, Pieters L, Balde AM. In vitro antiprotozoal and cytotoxic activity of ethnopharmacologically selected guinean plants. Planta Med 2014; 80:1340-1344. [PMID: 25180493 DOI: 10.1055/s-0034-1383047] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Based on an ethnobotanical survey, 41 Guinean plant species widely used in the traditional treatment of fever and/or malaria were collected. From these, 74 polar and apolar extracts were prepared and tested for their in vitro antiprotozoal activity along with their cytotoxicity on MRC-5 cells. A potent activity (IC50 < 5 µg/mL) was observed for Terminalia albida, Vismia guineensis, Spondias mombin, and Pavetta crassipes against Plasmodium falciparum; for Pavetta crassipes, Vismia guineensis, Guiera senegalensis, Spondias mombin, Terminalia macroptera, and Combretum glutinosum against Trypanosoma brucei brucei; for Bridelia ferruginea, G. senegalensis, V. guineensis, P. crassipes, and C. glutinosum against Trypanosoma cruzi. Only the extract of Tetracera alnifolia showed a good activity (IC50 8.1 µg/mL) against Leishmania infantum. The selectivity index of the active samples varied from 0.08 to > 100. These results may validate at least in part the traditional use of some of the plant species.
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Affiliation(s)
| | - Sere Diane
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea
| | | | | | | | - Aïssata Camara
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea
| | - Abdoulaye Diallo
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea
| | - Abdoulaye Keita
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Antwerp, Belgium
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Antwerp, Belgium
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
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7
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Traore MS, Baldé MA, Diallo MST, Baldé ES, Diané S, Camara A, Diallo A, Balde A, Keïta A, Keita SM, Oularé K, Magassouba FB, Diakité I, Diallo A, Pieters L, Baldé AM. Ethnobotanical survey on medicinal plants used by Guinean traditional healers in the treatment of malaria. J Ethnopharmacol 2013; 150:1145-1153. [PMID: 24184265 DOI: 10.1016/j.jep.2013.10.048] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 10/19/2013] [Accepted: 10/20/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The objective of the present study was to collect and document information on herbal remedies traditionally used for the treatment of malaria in Guinea. MATERIALS AND METHODS The survey was carried out from May 2008 to September 2010 and targeted traditional medical practitioners and herbalists. The questionnaire and oral interviews were based on the standardized model which was prepared by the "Centre de Recherche et de Valorisation des Plantes Médicinales (CRVPM) - Dubréka". RESULTS AND DISCUSSION A total of 258 people (141 males and 117 females) from which 150 traditional healers and 108 herbalists were interviewed. The age of informants ranged from 28 to 82 years old. 57% (149/258) of the interviewees were more than 50 years old. The respondents had good knowledge of the symptoms of malaria, and a fairly good understanding of the causes. One hundred thirteen plant species were recorded, out of which 109 were identified. They belonged to 84 genera and 46 families. The most frequently cited plants were Vismia guineensis, Parkia biglobosa, Nauclea latifolia, Harungana madagascariensis, Terminalia macroptera, Crossopteryx febrifuga, Terminalia albida, Annona senegalensis, and Nauclea pobeguinii. The leaves were most frequently used (80/113 species), followed by stem bark (38/113 species) and roots (4/113 species). The remedies were mostly prepared by decoction (111 species), followed by maceration (seven species). Only one species was prepared by infusion. CONCLUSION The present study showed that traditional healers in Guinea have a consistent knowledge of antimalarial plants. Further research should be carried out to compare the anti-malarial activity of the different species, and to check if their use against malaria can be scientifically validated.
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Affiliation(s)
- M S Traore
- Department of Pharmacy, University Gamal Abdel Nasser of Conakry, Guinea; Research and Valorization Center on Medicinal Plants, Dubréka, Guinea
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