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Adekunle YA, Samuel BB, Nahar L, Fatokun AA, Sarker SD. Anogeissus leiocarpus (DC.) Guill. & Perr. (Combretaceae): A review of the traditional uses, phytochemistry and pharmacology of African birch. Fitoterapia 2024; 176:105979. [PMID: 38692415 DOI: 10.1016/j.fitote.2024.105979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 04/16/2024] [Accepted: 04/25/2024] [Indexed: 05/03/2024]
Abstract
Anogeissus leiocarpus (DC.) Guill. & Perr. belongs to the family Combretaceae and is used both by African traditional medical practitioners and livestock rearers to treat diseases such as African trypanosomiasis, animal diarrhoea, asthma, cancer, cough, diabetes, dysentery, erectile dysfunction, fever, giardiasis, helminthiases, meningitis, menstrual disorders, monkeypox, oral infections, poliomyelitis, sickle cell anaemia, snake bites, toothache, urinary schistosomiasis, and yellow fever. Some of these activities have been associated with the presence of polyphenols in the plant which include ellagic acid derivatives, flavonoids, stilbenes, tannins, and triterpenes. Several bioactive molecules have been identified from A. leiocarpus. These include the main active constituents, ellagitannins, ellagic acid derivates, flavonoids and triterpenes. Pharmacological studies have confirmed its antibacterial, antifungal, antihyperglycemic, antihypertensive, antimalarial, antioxidative, antiparasitic, antitumour and anti-ulcer effects. The stem bark has been investigated mainly for biological activities and phytochemistry, and it is the most mentioned plant part highlighted by the traditional users in ethnomedicinal surveys. In vitro and in vivo models, which revealed a wide range of pharmacological actions against parasites causing helminthiasis, leishmaniasis, malaria and trypanosomiasis, have been used to study compounds from A. leiocarpus. Because of its uses in African traditional medicine and veterinary practices, A. leiocarpus has received considerable attention from researchers. The current review provides a comprehensive overview and critical appraisal of scientific reports on A. leiocarpus, covering its traditional uses, pharmacological activities and phytochemistry.
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Affiliation(s)
- Yemi A Adekunle
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Oduduwa Road, Ibadan 200132, Oyo State, Nigeria; Centre for Natural Products Discovery, School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, United Kingdom; Department of Pharmaceutical and Medicinal Chemistry, College of Pharmacy, Afe Babalola University, Km 8.5, Afe Babalola Way, P.M.B. 5454, Ado-Ekiti, Ekiti State, Nigeria.
| | - Babatunde B Samuel
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Oduduwa Road, Ibadan 200132, Oyo State, Nigeria.
| | - Lutfun Nahar
- Laboratory of Growth Regulators, Palacký University and Institute of Experimental Botany, The Czech Academy of Sciences, Šlechtitelů 27, Olomouc 78371, Czech Republic.
| | - Amos A Fatokun
- Centre for Natural Products Discovery, School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, United Kingdom
| | - Satyajit D Sarker
- Centre for Natural Products Discovery, School of Pharmacy and Biomolecular Sciences, Faculty of Science, Liverpool John Moores University, Byrom Street, Liverpool L3 3AF, United Kingdom
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Martinena CB, Corleto M, Martínez MMB, Amiano NO, García VE, Maffia PC, Tateosian NL. Antimicrobial Effect of Cannabidiol on Intracellular Mycobacterium tuberculosis. Cannabis Cannabinoid Res 2024; 9:464-469. [PMID: 38252548 DOI: 10.1089/can.2023.0124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024] Open
Abstract
Introduction: Mycobacterium tuberculosis, the etiologic agent of tuberculosis (TB), has killed nearly one billion people during the last two centuries. Nowadays, TB remains a major global health problem ranked among the top 10 causes of death worldwide. One of the main challenges in developing new strategies to fight TB is focused on reducing the duration and complexity of drug regimens. Cannabidiol (CBD) is the main nonpsychoactive ingredient extracted from the Cannabis sativa L. plant, which has been shown to be biologically active against bacteria. The purpose of this work was to investigate the antimicrobial effect of CBD on M. tuberculosis intracellular infection. Materials and Methods: To assess the minimum inhibitory concentration (MIC) of CBD on mycobacterial strains, the MTT assay was performed on Mycobacterium smegmatis, and the Colony-Forming Unit (CFU) assay was conducted on MtbH37Rv. Additionally, the cytotoxic effect of CBD on THP-1 cells was assessed by MTT assay. Moreover, macrophages derived from the THP-1 cell were infected with MtbH37Rv (multiplicity of infection 1:10) to evaluate the intracellular activity of CBD by determining the CFU/mL. Results: Antimicrobial activity against M. smegmatis (MIC=100 μM) and MtbH37Rv (MIC=25 μM) cultures was exhibited by CBD. Furthermore, the effect of CBD was also evaluated on MtbH37Rv infected macrophage cells. Interestingly, a reduction in viable intracellular MtbH37Rv bacteria was observed after 24 h of treatment. Moreover, CBD exhibited a safe profile toward human THP-1 cells, since it showed no toxicity (CC50=1075 μM) at a concentration of antibacterial effect (selectivity index 43). Conclusion: These results extend the knowledge regarding the antimicrobial activity of CBD and demonstrate its ability to kill the human intracellular pathogen M. tuberculosis.
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Affiliation(s)
- Camila Belen Martinena
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Merlina Corleto
- Laboratorio de Aplicaciones Biotecnológicas y Microbiologia, Universidad Nacional de Hurlingham, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Buenos Aires, Argentina
| | - Melina María Belén Martínez
- Laboratorio de Aplicaciones Biotecnológicas y Microbiologia, Universidad Nacional de Hurlingham, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Buenos Aires, Argentina
| | - Nicolás Oscar Amiano
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Verónica Edith García
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
| | - Paulo Cesar Maffia
- Laboratorio de Aplicaciones Biotecnológicas y Microbiologia, Universidad Nacional de Hurlingham, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET, Buenos Aires, Argentina
| | - Nancy Liliana Tateosian
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
- Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina
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Chalé-Dzul J, León-Deniz LV, Medina-Gómez S, Moo-Puc RE, Mirón-López G, Gómez-López P, Mena-Rejón GJ. Effect of extracts from several sponges of Yucatan Coast on Giardia lamblia and preliminary chemical investigation of the bioactive extract of Haliclona ( Reinera) tubifera. Nat Prod Res 2023; 37:4023-4027. [PMID: 36576083 DOI: 10.1080/14786419.2022.2161540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 12/08/2022] [Accepted: 12/14/2022] [Indexed: 12/29/2022]
Abstract
In this study, twenty-four organic extracts from six marine sponge species, collected at shallows of Yucatan, Mexico, were evaluated against Giardia lamblia trophozoites and Vero cells. The dichloromethane and hexane extracts of Haliclona tubifera exhibited the highest antigiardiasic activity (IC50 = 1.00 and 2.11 µg/mL, respectively), as well as high selectivity (SI = 41.8 and > 47.4, respectively), while ethyl acetate and methanol extracts of Cinachyrella alloclada, and methanol extract of Suberites aurantiaca showed moderate activity. Contrastingly, the extracts of Halichondria magniculosa and Oceanapia nodosa were considered non actives. Consequently, the dichloromethane extract of H. tubifera were subject to an exploratory chemical study, isolating cholesterol, two benzaldehyde derivatives, three benzoic acid derivatives, cytosine, and thymine.
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Affiliation(s)
- Juan Chalé-Dzul
- Unidad de Investigación Médica Yucatán, Unidad Médica de Alta Especialidad, Centro Médico "Ignacio García Téllez", IMSS, Mérida, Yucatán, Mexico
| | - Lorena V León-Deniz
- Depto. de Biología Marina, Facultad de Medicina de Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Yucatán, CP, Mexico
| | - Sara Medina-Gómez
- Facultad de Química, Universidad Autónoma de Yucatán, Mérida, Yucatán, Mexico
| | - Rosa E Moo-Puc
- Unidad de Investigación Médica Yucatán, Unidad Médica de Alta Especialidad, Centro Médico "Ignacio García Téllez", IMSS, Mérida, Yucatán, Mexico
| | | | - Patricia Gómez-López
- Instituto de Ciencias del Mar y Limnología, Unidad Académica de Ecología y Biodiversidad Acuática, Universidad Nacional Autónoma de México, Circuito Exterior S/N Col., Coyoacán, Mexico
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Atoum D, Fernandez-Pastor I, Young L, Edrada-Ebel R. Use of Multivariate Analysis to Unravel the Differences between Two Chamomile Varieties and Their Anticancer and Antioxidant Activities. PLANTS (BASEL, SWITZERLAND) 2023; 12:2297. [PMID: 37375922 DOI: 10.3390/plants12122297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 05/30/2023] [Accepted: 06/08/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND Plants from the Asteraceae family were commonly used to treat various diseases. The metabolomic profile of this family consisted of bioactive flavonoids and other phenolics. Chamomile is a member of the Asteraceae family. Jordanian and European chamomile are two varieties of Matricaria chamomilla (German chamomile), which were grown under different environmental conditions, were studied. Many examples of plant varieties with significant distinction in the secondary metabolite they afford have been described in the literature. Multivariate statistical analysis was employed to measure the depth of this variation in two chamomile varieties. METHODS From both types, crude extracts were prepared using solvents of different polarities and tested for their biological activity. The semipolar fraction of the European variety showed anticancer and antioxidant activity. Meanwhile, the semipolar fraction of the Jordanian type exhibited only antioxidant activity. Both extracts were fractionated, and then the biological activity was again assayed. RESULTS European and Jordanian chamomile fractions produced dicaffeoylquinic acid isomers exhibiting antioxidant capability. Additionally, Z-glucoferulic acid was produced from the European chamomile, demonstrating antioxidant activity. The European samples afforded two major compounds, chrysosplenetin and apigenin, that displayed anticancer activity. CONCLUSIONS Different environmental conditions between Jordanian and European chamomile affected the type of isolated compounds. Structure elucidation was performed with HPLC-MS coupled with dereplication techniques and 2D NMR experiments.
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Affiliation(s)
- Dana Atoum
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, The Hashemite University, Zarqa 13133, Jordan
| | - Ignacio Fernandez-Pastor
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
- Fundación MEDINA, Centro de Excelencia en Investigación de Medicamentos Innovadores de Andalucía, Parque Tecnológico de Ciencias de la Salud, Avda. del Conocimiento 34, 18016 Granada, Spain
| | - Louise Young
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
| | - RuAngelie Edrada-Ebel
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow G4 0RE, UK
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Nkouayeb Nangmou BM, Maza Djomkam HL, Bellier Tabekoueng G, Tékapi Tsopgni WD, Mbahbou Bitchagno GT, Mbock MA, Kamkumo RG, Frese M, Ndjakou Lenta B, Ngouela SA, Sewald N, Blaise Azebaze AG. Bioguided Fractionation and Isolation of an Antiplasmodial Saponin from the Roots of Nauclea xanthoxylon (A.Chev.) Aubrév. (Rubiaceae). Chem Biodivers 2023; 20:e202200271. [PMID: 36890112 DOI: 10.1002/cbdv.202200271] [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: 03/27/2022] [Revised: 02/22/2023] [Accepted: 03/06/2023] [Indexed: 03/10/2023]
Abstract
The root extract of Nauclea xanthoxylon (A.Chev.) Aubrév. displayed significant 50 % inhibition concentration (IC50 s) of 0.57 and 1.26 μg/mL against chloroquine resistant and sensitive Plasmodium falciparum (Pf) Dd2 and 3D7 strains, respectively. Bio-guided fractionation led to an ethyl acetate fraction with IC50 s of 2.68 and 1.85 μg/mL and subsequently, to the new quinovic acid saponin named xanthoxyloside (1) with IC50 s of 0.33 and 1.30 μM, respectively against the tested strains. Further compounds obtained from ethyl acetate and hexane fractions were the known clethric acid (2), ursolic acid (3), quafrinoic acid (4), quinovic acid (5), quinovic acid 3-O-β-D-fucopyranoside (6), oleanolic acid (7), oleanolic acid 3-acetate (8), friedelin (9), β-sitosterol (10a), stigmasterol (10b) and stigmasterol 3-O-β-D-glucopyranoside (11). Their structures were characterised with the aid of comprehensive spectroscopic methods (1 and 2D NMR, Mass). Bio-assays were performed using nucleic acid gel stain (SYBR green I)-based fluorescence assay with chloroquine as reference. Extracts and compounds exhibited good selectivity indices (SIs) of >10. Significant antiplasmodial activities measured for the crude extract, the ethyl acetate fraction and xanthoxyloside (1) from that fraction can justify the use of the root of N. xanthoxylon in ethnomedicine to treat malaria.
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Affiliation(s)
| | | | | | | | | | - Michel Arnaud Mbock
- Department of Biohemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Raceline Gounoue Kamkumo
- Department of Biohemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Marcel Frese
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, D-33501, Bielefeld, Germany
| | - Bruno Ndjakou Lenta
- Department of Chemistry, Higher Teacher Training College, University of Yaoundé I, P.O. Box 47, Yaoundé, Cameroon
| | - Silvère Augustin Ngouela
- Department of Organic Chemistry, Faculty of Science, University of Dschang P.O. Box 67, Dschang, Cameroon
| | - Nobert Sewald
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, D-33501, Bielefeld, Germany
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Jambwa P, Nkadimeng SM, Mudimba TN, Matope G, McGaw LJ. Antibacterial and anti-inflammatory activity of plant species used in traditional poultry ethnomedicine in Zimbabwe: A first step to developing alternatives to antibiotic poultry feed additives. JOURNAL OF ETHNOPHARMACOLOGY 2023; 300:115687. [PMID: 36084819 DOI: 10.1016/j.jep.2022.115687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Global interest in phytogenic feed additives as alternatives to antibiotics in feed has been spurred by the banning of antibiotic growth promoters by several countries. Suitable plant extracts for development of phytogenic feed additives should have therapeutic value and should also be safe. AIM OF STUDY The aim of this study was to evaluate the antibacterial, antioxidant and anti-lipoxygenase activities as well as cytotoxicity of selected plant species used in poultry ethnomedicine in Zimbabwe. METHODS Antibacterial activity was determined against three ATCC strains (Staphylococcus aureus, Escherichia coli, Salmonella Enteritidis) and two clinical strains isolated from chickens (Escherichia coli and Salmonella Gallinarum) using a two-fold serial microdilution assay. Qualitative antibacterial bioautography was also carried out using the ATCC strains. Antioxidant activities of crude acetone and methanol extracts were determined using free radical scavenging assays whilst anti-lipoxygenase activity was evaluated using a ferrous oxidation-xylenol orange (FOX) assay. Cytotoxicity was evaluated using a tetrazolium-based colorimetric assay (MTT assay) on Vero monkey kidney cells. RESULTS Erythrina abyssinica had the best antibacterial activity against both ATCC strains and clinical strains with minimum inhibitory concentration (MIC) values ranging from 0.02 to 0.156 mg/ml. Aloe greatheadii, Adenia gummifera (leaves), Senna singueana and Aloe chabaudii had moderate activity against the poultry pathogens. Bioautography showed that all ten plant species have antibacterial activity against the tested microorganisms with E. abyssinica and S. singueana having prominent bands of inhibition against both Gram-negative and Gram-positive bacteria. The acetone extract of S. singueana and the methanol extract of Euphorbia matabelensis had the most powerful antioxidant activities with mean IC50 values of 1.43 μg/ml and 1.31 μg/ml respectively in the ABTS assay which were comparable with those of the positive controls (ascorbic acid and trolox). Bobgunnia madagascariensis, A. chabaudii, E. abyssinica and Tridactyle bicaudata extracts had reasonable antioxidant activity. The S. singueana extract had the most potent anti-lipoxygenase activity with a mean IC50 value of 1.72 μg/ml. The cytotoxicity results showed that only the acetone extracts of A. greatheadii and S. singueana were relatively safe at concentrations that were active against the tested microorganisms (selective index >1). Regarding anti-lipoxygenase activity, extracts of B. madagascariensis, S. singueana, T. bicaudata and E. matabelensis were more active than toxic (selective index >5) indicating anti-inflammatory potential. CONCLUSIONS This study showed that S. singueana had a cocktail of therapeutic activity and supports further investigation of this plant species for development of phytogenic poultry feed additives. Other plant species with noteworthy biological activities include B. madagascariensis, E. abyssinica, A. greatheadii, T. bicaudata and E. matabelensis.
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Affiliation(s)
- P Jambwa
- Phytomedicine Programme, Department of Paraclinical Sciences, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa; Department of Veterinary Biosciences, University of Zimbabwe, PO Box MP167, Mt Pleasant, Harare, Zimbabwe.
| | - S M Nkadimeng
- Phytomedicine Programme, Department of Paraclinical Sciences, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa.
| | - T N Mudimba
- Department of Animal Production and Veterinary Medicine, University of Zimbabwe, PO Box MP167, Mt Pleasant, Harare, Zimbabwe.
| | - G Matope
- Department of Veterinary Pathobiology, University of Zimbabwe, PO Box MP167, Mt Pleasant, Harare, Zimbabwe.
| | - L J McGaw
- Phytomedicine Programme, Department of Paraclinical Sciences, University of Pretoria, Private Bag X04, Onderstepoort, 0110, South Africa.
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Aro AO, Famuyide IM, Oyagbemi AA, Kabongo-Kayoka PN, McGaw LJ. In Vitro Potential of the Acetone Leaf Extract and Fractions of Psychotria capensis (Eckl.) Vatke (Rubiaceae) to Combat Co-Infection of Tuberculosis and Helminthiasis. Front Pharmacol 2022; 12:744137. [PMID: 35087402 PMCID: PMC8787188 DOI: 10.3389/fphar.2021.744137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 12/16/2021] [Indexed: 11/15/2022] Open
Abstract
Tuberculosis (TB) is a disease of global importance that affects millions of people. Approximately a quarter of the world’s population is currently infected with M. tuberculosis, and about 10% of those infected will develop into active disease, particularly immune compromised individuals. Helminthiasis is of global health importance, affecting over 2 billion people mostly in resource-poor countries. Co-infection with tuberculosis (TB) and helminths (worms) is an emerging global public health concern with both affecting about one-third of the global population. Chronic infection with helminths can result in impaired immune responses to TB as well as enhancing failure to TB therapy and BCG vaccination. Antimycobacterial and anthelmintic activities of the acetone extract and fractions of Psychotria capensis were evaluated, including their in vitro safety. In addition, the anti-inflammatory and immunomodulatory effect of the fractions and crude extract of P. capensis were assessed. Antimycobacterial activity of the extract and fractions was tested against four non-tuberculous mycobacteria (Mycobacterium smegmatis, M. fortuitum, M. aurum, M. bovis BCG) and pathogenic M. tuberculosis H37Rv while the Egg Hatch Assay (EHA) was used for the anthelmintic test on eggs of Haemonchus contortus. Cytotoxicity was determined against Vero kidney cells while in vitro immune modulation via cytokine production was determined on activated macrophages. The minimum inhibitory concentration (MIC) values of the Psychotria capensis acetone extract and fractions ranged from 39 to 1,250 μg/ml with the crude extract and hexane fraction having the best MIC values (both 39 μg/ml). In the EHA, the inhibitory concentration (IC50) ranged from 160 to 630 μg/ml with the hexane fraction having the best activity. The hexane and chloroform fractions were relatively non-toxic with LC50 values of 290 and 248 μg/ml respectively, while the acetone crude extract (64 μg/ml) and n-butanol fraction (71 μg/ml) were moderately toxic. The SI values (LC50/MIC) ranged from 0.1 to 7.4 with the hexane fraction having the highest value against M. smegmatis (7.4). The hexane fraction had the best dual anthelmintic and antimycobacterial activity. This fraction had the best NO inhibitory activity and was the least cytotoxic, indicating that its activity was not due to general metabolic toxicity, with 96.54% cell viability. Pro-inflammatory cytokines such as IL-12p70 were upregulated while IL-10 expression was inhibited by the extracts. Compounds were detected using GC-MS analysis, and in both the crude acetone extract and the hexane fraction was the diterpene neophytadiene, which has anti-inflammatory and antimicrobial activity. Finding alternative or complementary approaches to dealing with TB infections by, amongst other things, reducing the incidence of helminth infestations may lessen the burden of TB, contributing to slowing the spread of multi-drug resistance.
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Affiliation(s)
- Abimbola O Aro
- Department of Agriculture and Animal Health, College of Agriculture and Environmental Science, University of South Africa, Florida, South Africa
| | - Ibukun M Famuyide
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
| | - Ademola A Oyagbemi
- Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - Prudence N Kabongo-Kayoka
- Department of Agriculture and Animal Health, College of Agriculture and Environmental Science, University of South Africa, Florida, South Africa
| | - Lyndy J McGaw
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Pretoria, South Africa
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Jambwa P, Makhubu FN, Matope G, Fouche G, McGaw LJ. Bioassay Guided Fractionation of Senna singueana and Its Potential for Development of Poultry Phytogenic Feed Additives. Front Vet Sci 2022; 8:800272. [PMID: 35097048 PMCID: PMC8793064 DOI: 10.3389/fvets.2021.800272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/17/2021] [Indexed: 11/13/2022] Open
Abstract
There has been burgeoning interest in plant-based feed additives following restrictions placed on the use of antibiotic feed additives in many countries. Phytogenic feed additives are recommended to have a range of useful properties to support the growth and development of poultry to a similar level as that obtained by supplementing feed with antibiotics. The aim of this study was to evaluate the antibacterial, anti-lipoxygenase and antioxidant activity, and in vitro safety of fractions and isolated compounds from leaves of Senna singueana. Antibacterial activities of the fractions and isolated compounds were determined against a panel of bacteria using a two-fold serial microdilution assay and qualitative bioautography assays. Anti-lipoxygenase activity was evaluated using the ferrous oxidation-xylenol orange (FOX) method. Antioxidant activity was assessed qualitatively and quantitatively using radical scavenging assays. Dichloromethane and ethyl acetate fractions from solvent-solvent partitioning had the best antibacterial activity with MIC values ranging from 156 to 313 μg/ml. Fractions obtained from column chromatography had significant to weak antibacterial activity with MIC values ranging from 50 to 1,250 μg/ml. Bioautography showed clear bands of bacterial inhibition, indicating the presence of a number of active compounds in several fractions. The ethyl acetate fraction and all the tested column fractions had potent anti-lipoxygenase activity with IC50 values of ≤2.5 μg/ml which were lower than that of quercetin (positive control), indicating anti-inflammatory potential. The ethyl acetate fraction and several column fractions had powerful antioxidant activity with IC50 values of ≤5 μg/ml in the ABTS assay. Cytotoxicity values against Vero kidney cells ranged from LC50 = 40.0–989.3 μg/ml. Bioassay-guided fractionation led to the isolation and identification of a known bioactive compound, luteolin. S. singueana is a promising candidate for the development of poultry phytogenic feed additives.
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Affiliation(s)
- Prosper Jambwa
- Phytomedicine Programme, Department of Paraclinical Sciences, University of Pretoria, Onderstepoort, South Africa
- Department of Veterinary Biosciences, University of Zimbabwe, Harare, Zimbabwe
| | - Fikile N. Makhubu
- Phytomedicine Programme, Department of Paraclinical Sciences, University of Pretoria, Onderstepoort, South Africa
| | - Gift Matope
- Department of Veterinary Pathobiology, University of Zimbabwe, Harare, Zimbabwe
| | - Gerda Fouche
- Department of Paraclinical Sciences, University of Pretoria, Onderstepoort, South Africa
| | - Lyndy J. McGaw
- Phytomedicine Programme, Department of Paraclinical Sciences, University of Pretoria, Onderstepoort, South Africa
- *Correspondence: Lyndy J. McGaw
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Tajbakhsh E, Kwenti TE, Kheyri P, Nezaratizade S, Lindsay DS, Khamesipour F. Antiplasmodial, antimalarial activities and toxicity of African medicinal plants: a systematic review of literature. Malar J 2021; 20:349. [PMID: 34433465 PMCID: PMC8390284 DOI: 10.1186/s12936-021-03866-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 07/27/2021] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Malaria still constitutes a major public health menace, especially in tropical and subtropical countries. Close to half a million people mainly children in Africa, die every year from the disease. With the rising resistance to frontline drugs (artemisinin-based combinations), there is a need to accelerate the discovery and development of newer anti-malarial drugs. A systematic review was conducted to identify the African medicinal plants with significant antiplasmodial and/or anti-malarial activity, toxicity, as wells as assessing the variation in their activity between study designs (in vitro and in vivo). METHODS Key health-related databases including Google Scholar, PubMed, PubMed Central, and Science Direct were searched for relevant literature on the antiplasmodial and anti-malarial activities of African medicinal plants. RESULTS In total, 200 research articles were identified, a majority of which were studies conducted in Nigeria. The selected research articles constituted 722 independent experiments evaluating 502 plant species. Of the 722 studies, 81.9%, 12.4%, and 5.5% were in vitro, in vivo, and combined in vitro and in vivo, respectively. The most frequently investigated plant species were Azadirachta indica, Zanthoxylum chalybeum, Picrilima nitida, and Nauclea latifolia meanwhile Fabaceae, Euphorbiaceae, Annonaceae, Rubiaceae, Rutaceae, Meliaceae, and Lamiaceae were the most frequently investigated plant families. Overall, 248 (34.3%), 241 (33.4%), and 233 (32.3%) of the studies reported very good, good, and moderate activity, respectively. Alchornea cordifolia, Flueggea virosa, Cryptolepis sanguinolenta, Zanthoxylum chalybeum, and Maytenus senegalensis gave consistently very good activity across the different studies. In all, only 31 (4.3%) of studies involved pure compounds and these had significantly (p = 0.044) higher antiplasmodial activity relative to crude extracts. Out of the 198 plant species tested for toxicity, 52 (26.3%) demonstrated some degree of toxicity, with toxicity most frequently reported with Azadirachta indica and Vernonia amygdalina. These species were equally the most frequently inactive plants reported. The leaves were the most frequently reported toxic part of plants used. Furthermore, toxicity was observed to decrease with increasing antiplasmodial activity. CONCLUSIONS Although there are many indigenous plants with considerable antiplasmodial and anti-malarial activity, the progress in the development of new anti-malarial drugs from African medicinal plants is still slothful, with only one clinical trial with Cochlospermum planchonii (Bixaceae) conducted to date. There is, therefore, the need to scale up anti-malarial drug discovery in the African region.
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Affiliation(s)
- Elahe Tajbakhsh
- Department of Microbiology, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Tebit Emmanuel Kwenti
- Department of Biomedical Science, Faculty of Health Sciences, Regional Hospital Buea, Buea, Cameroon
- Department of Public Health and Hygiene, Faculty of Health Sciences, University of Buea, Yaoundé, Cameroon
- Department of Medical Laboratory Sciences, Faculty of Health Sciences, University of Buea, Yaoundé, Cameroon
| | - Parya Kheyri
- Young Researchers and Elite Club, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - Saeed Nezaratizade
- Young Researchers and Elite Club, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
| | - David S Lindsay
- Department of Biomedical Sciences and Pathobiology, Center for One Health Research, Virginia Maryland College of Veterinary Medicine, Virginia Tech, 1410 Prices Fork Road, Blacksburg, VA, 24061-0342, USA
| | - Faham Khamesipour
- Shahrekord Branch, Islamic Azad University, Shahrekord, Iran.
- Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Salazar-Mendoza J, León-Deniz LV, Mirón-López G, Moo-Puc RE, Chalé-Dzul J, Mena-Rejón GJ. Cytotoxic activity against breast cancer cells of two species of marine sponges from shallows of Yucatan peninsula. Nat Prod Res 2020; 35:5329-5333. [PMID: 32363934 DOI: 10.1080/14786419.2020.1753739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
This study aimed to evaluate the in vitro activity of extracts of two marine sponge species, occurring in the shallows of the Yucatan peninsula coast, on two cancer and one normal mammalian cell lines. Hexane, dichloromethane, ethyl acetate and methanol extracts of Halichondria magniconulosa and Halichondria melanadocia were screened for their cytotoxic activity against hormone-dependent breast cancer (MCF-7) and human cervix cancer (SiHa) cell lines. The ethyl acetate extract of H. magniconulosa exhibited significant cytotoxicity against MCF-7 cells to a CC50 of 0.8 µg/mL, as well as high selectivity (SI = 24.5). On the other hand, SiHa cells were moderately sensitive to the dichloromethane and ethyl acetate extracts of the same species. (CC50 = 34.9 and 31.5 µg/mL, respectively). None of the extracts of H. melanadocia were considered active due their CC50's were ranged from 59.0 to 94.5 µg/mL.
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Affiliation(s)
| | - Lorena V León-Deniz
- Departamento de Biología Marina, Facultad de Medicina de Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Yucatán, México
| | | | - Rosa E Moo-Puc
- Unidad de Investigación Médica Yucatán, Unidad Médica de Alta Especialidad, Centro Médico "Ignacio García Téllez," IMSS, Mérida, Yucatán, México
| | - Juan Chalé-Dzul
- Unidad de Investigación Médica Yucatán, Unidad Médica de Alta Especialidad, Centro Médico "Ignacio García Téllez," IMSS, Mérida, Yucatán, México
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11
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Aggarwal B, Sharma P, Lamba H. Gas chromatography–mass spectrometry characterization of bioactive compounds from Ziziphus nummularia (Burm. F.) stem bark with promising in vitro antiplasmodial activity. J Pharm Bioallied Sci 2020; 12:42-47. [PMID: 32801599 PMCID: PMC7397993 DOI: 10.4103/jpbs.jpbs_41_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/21/2018] [Accepted: 09/11/2019] [Indexed: 11/30/2022] Open
Abstract
Objective: This study was carried out to evaluate the in vitro antiplasmodial activity of alcoholic and hydroalcoholic extract of Ziziphus nummularia stem bark as well as the determination of core structure fractionated from its crude extract. Materials and Methods: The antiplasmodial activity of stem bark extracts was investigated by in vitro schizont maturation inhibition assay against Plasmodium falciparum (both chloroquine sensitive and resistant). The crude extract was analyzed by gas chromatography–mass spectrophotometry (GC–MS). Result: Both alcoholic and hydroalcoholic extracts showed their potential toward in vitro antiplasmodial activity against P. falciparum strains MRC-02 (CQ sensitive) and RKL-09 (CQ resistant). Alcoholic extract showed more promising antiplasmodial activity with Inhibitory concentration (IC50) of 0.130 and 1.191 for MRC-02 and RKL-09 strains, respectively, as compared to hydroalcoholic extract with IC50 of 1.856 and 2.981 for MRC-02 and RKL-09 strains, respectively. No morphological changes in erythrocytes were observed when investigated for chemical injury to the erythrocytes. Chemical characterization of alcoholic extract was performed by GC–MS analysis to identify the bioactive compounds that are responsible for antiplasmodial activity. Alkyl esters, phenolics, and flavonoids were found as major compounds and also showed resemblance to existing antimalarial drugs. Conclusion: The findings suggested that the investigated extracts will provide a foundation for combating the resistant strains of P. falciparum. Also, the compounds isolated from Z. nummularia crude extract are viable newer chemical antimalarial candidates requiring further investigation.
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Cáceres-Castillo D, Carballo RM, Quijano-Quiñones R, Mirón-López G, Graniel-Sabido M, Moo-Puc RE, Mena-Rejón GJ. Synthesis, in vitro antigiardial activity, SAR analysis and docking study of substituted chalcones. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02492-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Dzul-Beh ADJ, García-Sosa K, Uc-Cachón AH, Bórquez J, Loyola LA, Barrios-García HB, Peña-Rodríguez LM, Molina-Salinas GM. In vitro growth inhibition and bactericidal activity of spathulenol against drug-resistant clinical isolates of Mycobacterium tuberculosis. REVISTA BRASILEIRA DE FARMACOGNOSIA 2019. [DOI: 10.1016/j.bjp.2019.06.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Orlando G, Ferrante C, Zengin G, Sinan KI, Bene K, Diuzheva A, Jekő J, Cziáky Z, Simone SD, Recinella L, Chiavaroli A, Leone S, Brunetti L, Picot-Allain CMN, Mahomoodally MF, Menghini L. Qualitative Chemical Characterization and Multidirectional Biological Investigation of Leaves and Bark Extracts of Anogeissus leiocarpus (DC.) Guill. & Perr. (Combretaceae). Antioxidants (Basel) 2019; 8:antiox8090343. [PMID: 31480498 PMCID: PMC6770311 DOI: 10.3390/antiox8090343] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 08/17/2019] [Accepted: 08/22/2019] [Indexed: 12/11/2022] Open
Abstract
Anogeissus leiocarpus (DC.) Guill. & Perr. (Combretaceae) has a long history of use by folk populations for the management of multiple human ailments. Based on the published literature, there has been no attempt to conduct a comparative assessment of the biological activity and the phytochemical profiles of the leaves and stem bark of A. leiocarpus extracted using methanol, ethyl acetate, and water. By high-performance liquid chromatography with electrospray ionization mass spectrometric detection (HPLC-ESI-MSn) analysis, quinic, shikimic, gallic, and protocatechuic acids were tentatively identified from all the extracts, while chlorogenic, caffeic, ferulic, and dodecanedioic acids were only characterised from the leaves extracts. Additionally, a pharmacological study was carried out to evaluate potential protective effects that are induced by the extracts in rat colon and colon cancer HCT116 cell line. In general, the methanol and water extracts of A. leiocarpus leaves and stem bark showed potent radical scavenging and reducing properties. It was noted that the stem bark extracts were more potent antioxidants as compared to the leaves extracts. The methanol extract of A. leiocarpus leaves showed the highest acetyl (4.68 mg galantamine equivalent/g) and butyryl (4.0 mg galantamine equivalent/g) cholinesterase inhibition. Among ethyl acetate extracts, the pharmacological investigation suggested stem bark ethyl acetate extracts to be the most promising. This extract revealed ability to protect rat colon from lipopolysaccharide-induced oxidative stress, without exerting promoting effects on HCT116 cell line viability and migration. As a conclusion, A. leiocarpus represents a potential source of bioactive compounds in the development of novel therapeutic agents.
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Affiliation(s)
- Giustino Orlando
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Claudio Ferrante
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy.
| | - Gokhan Zengin
- Department of Biology, Faculty of Science, Selcuk University, Konya 42130, Turkey.
| | | | - Kouadio Bene
- Laboratoire de Botanique et Phytothérapie, Unité de Formation et de Recherche Sciences de la Nature, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Ivory Coast
| | - Alina Diuzheva
- Department of Forest Protection and Entomology, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences, Prague 16500, Czech Republic
| | - József Jekő
- Agricultural and Molecular Research and Service Institute, University of Nyíregyháza, Nyíregyháza 4400, Hungary
| | - Zoltán Cziáky
- Agricultural and Molecular Research and Service Institute, University of Nyíregyháza, Nyíregyháza 4400, Hungary
| | - Simonetta Di Simone
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Lucia Recinella
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Annalisa Chiavaroli
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Sheila Leone
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | - Luigi Brunetti
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
| | | | | | - Luigi Menghini
- Department of Pharmacy, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy
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Molina-Salinas GM, Uc-Cachón AH, Peña-Rodríguez LM, Dzul-Beh ADJ, Escobedo Gracía-Medrano RM. Bactericidal Effect of the Leaf Extract from Musa spp. (AAB Group, Silk Subgroup), cv. "Manzano" Against Multidrug-Resistant Mycobacterium tuberculosis. J Med Food 2019; 22:1183-1185. [PMID: 31268391 PMCID: PMC6862945 DOI: 10.1089/jmf.2019.0075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Air-dried leaves of a Musa spp. AAB, cv. “Manzano” plant, known as Ja'as in the Maya culture, were sequentially extracted with hexane, ethyl acetate, and methanol; the resulting extracts were investigated for their antimycobacterial activity against susceptible and drug-resistant strains of Mycobacterium tuberculosis (MTB) using the Microplate Alamar Blue Assay. Both the n-hexane extract (HE) and ethyl acetate extract (EE) showed potent activity against both strains of MTB, with the EE exhibiting the strongest activity and a Minimum Inhibitory Concentration of 12.5 and 6.25 μg/mL against susceptible and drug-resistant strains, respectively. Both extracts also demonstrated a mycobactericidal effect and a very good selectivity index when tested for cytotoxic activity on Vero monkey kidney cells, using the Sulforhodamine B assay. Our results demonstrate the efficiency and selectivity of Musa spp. AAB, cv. “Manzano” against MTB strains and support its traditional use as remedy against tuberculosis in Maya traditional medicine.
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Affiliation(s)
- Gloria María Molina-Salinas
- Unit of Medical Research Yucatan, Medical Unit of High Specialty, Specialty Hospital 1, Mérida, Yucatan, Mexican Social Security Institute, IMSS, Mexico
| | - Andrés Humberto Uc-Cachón
- Unit of Medical Research Yucatan, Medical Unit of High Specialty, Specialty Hospital 1, Mérida, Yucatan, Mexican Social Security Institute, IMSS, Mexico
| | | | - Angel de Jesús Dzul-Beh
- Unit of Medical Research Yucatan, Medical Unit of High Specialty, Specialty Hospital 1, Mérida, Yucatan, Mexican Social Security Institute, IMSS, Mexico
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16
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Belemnaba L, Ouédraogo S, Nitiéma M, Chataigneau T, Guissou IP, Schini-Kerth VB, Bucher B, Auger C. An aqueous extract of the Anogeissus leiocarpus bark (AEAL) induces the endothelium-dependent relaxation of porcine coronary artery rings involving predominantly nitric oxide. J Basic Clin Physiol Pharmacol 2018; 29:599-608. [PMID: 29723154 DOI: 10.1515/jbcpp-2017-0084] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 03/23/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Anogeissus leiocarpus is a Sahel tree traditionally used by the residents of Burkina Faso for its antihypertensive properties. In this study, experiments were conducted to evaluate whether an aqueous extract of the Anogeissus leiocarpus (AEAL) trunk bark induces a vasorelaxant effect on porcine coronary artery rings and to investigate the underlying mechanism. METHODS AEAL-induced relaxations were assessed using porcine coronary artery rings suspended in organ chambers. The phosphorylation levels of Src, Akt and endothelial nitric oxide synthase (eNOS) were assessed in a primary endothelial cell culture by Western blot. The reactive oxygen species (ROS) formation was assessed using dihydroethidine. RESULTS In porcine coronary artery rings, AEAL at 0.1-300 μg/mL induced endothelium-dependent relaxations, which were inhibited in the presence of inhibitors of nitric oxide (NO) and the endothelium-derived hyperpolarization pathways. Moreover, the AEAL-induced NO-mediated relaxations were significantly reduced by the inhibitors of Src and PI3-kinase as well as by the membrane-permeant ROS scavengers. In cultured porcine coronary artery endothelial cells, treatment with AEAL is associated with an intracellular generation of ROS. Moreover, the AEAL induced the phosphorylations of Akt (Ser473), eNOS (Ser1177) and a transient phosphorylation of Src (Ser17) in a time-dependent manner. CONCLUSIONS These findings indicate that AEAL is a potent inducer of endothelium-dependent NO-mediated relaxations in porcine coronary arteries through the redox-sensitive Src/PI3-kinase/Akt pathway-dependent activation of eNOS.
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Affiliation(s)
- Lazare Belemnaba
- CNRST/IRSS/MEPHATRA-Ph, 03 BP 7192 Ouagadougou 03, Burkina Faso, West Africa
- UMR CNRS 7213, Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie Université de Strasbourg, Illkirch, France
- Institut de Recherche en Sciences de la Santé (IRSS/CNRST), Ouagadougou, Burkina Faso, West Africa, Phone: (00226) 78848155
| | - Sylvin Ouédraogo
- Institut de Recherche en Sciences de la Santé (IRSS/CNRST), Ouagadougou, Burkina Faso, West Africa
| | - Mathieu Nitiéma
- Institut de Recherche en Sciences de la Santé (IRSS/CNRST), Ouagadougou, Burkina Faso, West Africa
- Université Ouaga I Pr Joseph Ki-ZERBO, Ouagadougou, Burkina Faso, West Africa
| | - Thierry Chataigneau
- UMR CNRS 7213, Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie Université de Strasbourg, Illkirch, France
| | - Innocent Pierre Guissou
- Institut de Recherche en Sciences de la Santé (IRSS/CNRST), Ouagadougou, Burkina Faso, West Africa
- Université Ouaga I Pr Joseph Ki-ZERBO, Ouagadougou, Burkina Faso, West Africa
| | - Valérie B Schini-Kerth
- UMR CNRS 7213, Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie Université de Strasbourg, Illkirch, France
| | - Bernard Bucher
- UMR CNRS 7213, Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie Université de Strasbourg, Illkirch, France
| | - Cyril Auger
- UMR CNRS 7213, Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie Université de Strasbourg, Illkirch, France
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Comparing Medicinal Uses of Cochlospermaceae throughout Its Geographic Range with Insights from Molecular Phylogenetics. DIVERSITY 2018. [DOI: 10.3390/d10040123] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Species of the Cochlospermaceae, a small mostly pantropical plant family, were evaluated at a continental scale for medicinal uses in traditional medicine. This ethnobotanical information was placed in a phylogenetic framework to make informed predictions in the search for new medicines and bioactive compounds. Medicinal plant-use data were mapped onto a molecular phylogeny based on DNA sequences of nuclear and chloroplast markers. Associations of medicinal uses among closely related species occurring in different geographic regions and among diverse cultures were evaluated. The most common medicinal uses for these species are those used to treat skin ailments, gastro-intestinal problems, malaria, and liver issues. The plant species with the most numerous uses is Cochlospermum tinctorium, which occurs primarily in West Africa. Closely related species being used by cultural groups in different geographic regions to treat the same illnesses suggests the presence of bioactive compounds with potential biomedical value, since they may represent independent discoveries of similar medicinally-active compounds. This leads to the speculation that those closely related species not currently being used to treat these ailments may also contain identical or similar medicinally-active compounds and are worthy of laboratory investigations.
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Ndjonka D, Djafsia B, Liebau E. Review on medicinal plants and natural compounds as anti-Onchocerca agents. Parasitol Res 2018; 117:2697-2713. [PMID: 30008135 DOI: 10.1007/s00436-018-6003-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 07/04/2018] [Indexed: 12/28/2022]
Abstract
Onchocerciasis is a filarial vector borne disease which affects several million people mostly in Africa. The therapeutic approach of its control was based on a succession of drugs which always showed limits. The last one: ivermectin is not the least. It was shown to be only microfilaricidal and induced resistance to the human parasite Onchocerca volvulus. The approach using medicinal plants used in traditional medicine is a possible alternative method to cure onchocerciasis. Onchocerca ochengi and Onchocerca gutturosa are the parasite models used to assess anthelmintic activity of potentially anthelmintic plants. Numerous studies assessed the in vitro and/or in vivo anthelmintic activity of medicinal plants. Online electronic databases were consulted to gather publications on in vitro and in vivo studies of anti-Onchocerca activity of plants from 1990 to 2017. Globally, 13 plant families were investigated for anti-Onchocerca activity in 13 studies. The most active species were Anacardium occidentale, Euphorbia hirta and Acacia nilotica each with an LC50 value of 2.76, 6.25 and 1.2 μg/mL, respectively. Polycarpol, voacamine, voacangine, ellagic acid, gallic acid, gentisic acid, 3-O-acetyl aleuritolic acid and (-)-epigallocatechin 3-O-gallate were the isolated plant compounds with anti-Onchocerca activity. Most of the assessed extract/compounds showed a good safety after in vivo acute toxicity assays and/or in vitro cytotoxicity test. The exception was the ethanol extract of Trichilia emetica, which killed completely and drastically mice at a dose of 3000 mg/kg. Several plant groups of compounds were shown active against Onchocerca sp. such as tannins, alkaloids, triterpenoids and essential oils. Nevertheless, none of the active compounds was subjected to clinical trial, to assessment of its diffusibility through nodular wall or its capability to induce genetic resistance of Onchocerca sp.
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Affiliation(s)
- Dieudonné Ndjonka
- Department of Biological Sciences, Faculty of Science, University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon.
| | - Boursou Djafsia
- Department of Biological Sciences, Faculty of Science, University of Ngaoundere, P.O. Box 454, Ngaoundere, Cameroon.,Saint Jerome School of Health Sciences, Saint Jerome Catholic University of Douala, Douala, Cameroon
| | - Eva Liebau
- University of Münster, Institute for Zoophysiology, Schlossplatz 8, 48143, Münster, Germany
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Simoben CV, Ntie-Kang F, Akone SH, Sippl W. Compounds from African Medicinal Plants with Activities Against Selected Parasitic Diseases: Schistosomiasis, Trypanosomiasis and Leishmaniasis. NATURAL PRODUCTS AND BIOPROSPECTING 2018; 8:151-169. [PMID: 29744736 PMCID: PMC5971035 DOI: 10.1007/s13659-018-0165-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/26/2018] [Indexed: 05/10/2023]
Abstract
Parasitic diseases continue to represent a threat on a global scale, particularly among the poorest countries in the world. This is particularly because of the absence of vaccines, and in some cases, resistance against available drugs, currently being used for their treatment. In this review emphasis is laid on natural products and scaffolds from African medicinal plants (AMPs) for lead drug discovery and possible further development of drugs for the treatment of parasitic diseases. In the discussion, emphasis has been laid on alkaloids, terpenoids, quinones, flavonoids and narrower compound classes of compounds with micromolar range activities against Schistosoma, Trypanosoma and Leishmania species. In each subparagraph, emphasis is laid on the compound subclasses with most promising in vitro and/or in vivo activities of plant extracts and isolated compounds. Suggestions for future drug development from African medicinal plants have also been provided. This review covering 167 references, including 82 compounds, provides information published within two decades (1997-2017).
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Affiliation(s)
- Conrad V Simoben
- Institute of Pharmacy, Martin-Luther University of Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120, Halle (Saale), Germany
| | - Fidele Ntie-Kang
- Institute of Pharmacy, Martin-Luther University of Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120, Halle (Saale), Germany.
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea, 00237, Cameroon.
| | - Sergi H Akone
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-University, Universitaetsstrasse1, Geb. 26.23, Duesseldorf, 40225, Germany
- Department of Chemistry, Faculty of Science, University of Douala, PO Box 24157, Douala, 00237, Cameroon
| | - Wolfgang Sippl
- Institute of Pharmacy, Martin-Luther University of Halle-Wittenberg, Wolfgang-Langenbeck-Str. 4, 06120, Halle (Saale), Germany
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Alebie G, Urga B, Worku A. Systematic review on traditional medicinal plants used for the treatment of malaria in Ethiopia: trends and perspectives. Malar J 2017; 16:307. [PMID: 28764723 PMCID: PMC5540187 DOI: 10.1186/s12936-017-1953-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 07/22/2017] [Indexed: 11/18/2022] Open
Abstract
Background Ethiopia is endowed with abundant medicinal
plant resources and traditional medicinal practices. However, available research evidence on indigenous anti-malarial plants is highly fragmented in the country. The present systematic review attempted to explore, synthesize and compile ethno-medicinal research evidence on anti-malarial medicinal plants in Ethiopia. Methods A systematic web search analysis and review was conducted on research literature pertaining to medicinal plants used for traditional malaria treatment in Ethiopia. Data were collected from a total of 82 Ethiopian studies meeting specific inclusion criteria including published research articles and unpublished thesis reports. SPSS Version 16 was used to summarize relevant ethno-botanical/medicinal information using descriptive statistics, frequency, percentage, tables, and bar graphs. Results A total of 200 different plant species (from 71 families) used for traditional malaria treatment were identified in different parts of Ethiopia. Distribution and usage pattern of anti-malarial plants showed substantial variability across different geographic settings. A higher diversity of anti-malarial plants was reported from western and southwestern parts of the country. Analysis of ethno-medicinal recipes indicated that mainly fresh leaves were used for preparation of remedies. Decoction, concoction and eating/chewing were found to be the most frequently employed herbal remedy preparation methods. Notably, anti-malarial herbal remedies were administered by oral route. Information on potential side effects of anti-malarial herbal preparations was patchy. However, some anti-malarial plants were reported to have potentially serious side effects using different local antidotes and some specific contra-indications. Conclusion The study highlighted a rich diversity of indigenous anti-malarial medicinal plants with equally divergent herbal remedy preparation and use pattern in Ethiopia. Baseline information gaps were observed in key geographic settings. Likewise, herbal remedy toxicity risks and countermeasures generally entailed more exhaustive investigation. Experimental research and advanced chemical analysis are also required to validate the therapeutic potential of anti-malarial compounds from promising plant species. Electronic supplementary material The online version of this article (doi:10.1186/s12936-017-1953-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Getachew Alebie
- Department of Biology, Jigjiga University, P.O. Box-1020, Jijiga, Ethiopia.
| | - Befikadu Urga
- College of Veterinary Medicine, Jigjiga University, P.O.Box-1020, Jijiga, Ethiopia
| | - Amha Worku
- Department of Biology, Jigjiga University, P.O. Box-1020, Jijiga, Ethiopia
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Tuenter E, Segers K, Kang KB, Viaene J, Sung SH, Cos P, Maes L, Heyden YV, Pieters L. Antiplasmodial Activity, Cytotoxicity and Structure-Activity Relationship Study of Cyclopeptide Alkaloids. Molecules 2017; 22:molecules22020224. [PMID: 28157177 PMCID: PMC6155665 DOI: 10.3390/molecules22020224] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 01/30/2017] [Indexed: 11/16/2022] Open
Abstract
Cyclopeptide alkaloids are polyamidic, macrocyclic compounds, containing a 13-, 14-, or 15-membered ring. The ring system consists of a hydroxystyrylamine moiety, an amino acid, and a β-hydroxy amino acid; attached to the ring is a side chain, comprised of one or two more amino acid moieties. In vitro antiplasmodial activity was shown before for several compounds belonging to this class, and in this paper the antiplasmodial and cytotoxic activities of ten more cyclopeptide alkaloids are reported. Combining these results and the IC50 values that were reported by our group previously, a library consisting of 19 cyclopeptide alkaloids was created. A qualitative SAR (structure-activity relationship) study indicated that a 13-membered macrocyclic ring is preferable over a 14-membered one. Furthermore, the presence of a β-hydroxy proline moiety could correlate with higher antiplasmodial activity, and methoxylation (or, to a lesser extent, hydroxylation) of the styrylamine moiety could be important for displaying antiplasmodial activity. In addition, QSAR (quantitative structure-activity relationship) models were developed, using PLS (partial least squares regression) and MLR (multiple linear regression). On the one hand, these models allow for the indication of the most important descriptors (molecular properties) responsible for the antiplasmodial activity. Additionally, predictions made for interesting structures did not contradict the expectations raised in the qualitative SAR study.
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Affiliation(s)
- Emmy Tuenter
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
| | - Karen Segers
- Department of Analytical Chemistry and Pharmaceutical Technology, Center for Pharmaceutical Research (CePhaR), Vrije Universiteit Brussel-VUB, Laarbeeklaan 103, B-1090 Brussels, Belgium.
| | - Kyo Bin Kang
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
| | - Johan Viaene
- Department of Analytical Chemistry and Pharmaceutical Technology, Center for Pharmaceutical Research (CePhaR), Vrije Universiteit Brussel-VUB, Laarbeeklaan 103, B-1090 Brussels, Belgium.
| | - Sang Hyun Sung
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea.
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
| | - Yvan Vander Heyden
- Department of Analytical Chemistry and Pharmaceutical Technology, Center for Pharmaceutical Research (CePhaR), Vrije Universiteit Brussel-VUB, Laarbeeklaan 103, B-1090 Brussels, Belgium.
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
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Singh D, Baghel US, Gautam A, Baghel DS, Yadav D, Malik J, Yadav R. The genus Anogeissus: A review on ethnopharmacology, phytochemistry and pharmacology. JOURNAL OF ETHNOPHARMACOLOGY 2016; 194:30-56. [PMID: 27566202 DOI: 10.1016/j.jep.2016.08.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 07/16/2016] [Accepted: 08/19/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The genus Anogeissus (axlewood tree, ghatti tree, button tree and chewing stick tree) belongs to Combretaceae, includes eight species that are distributed in Asia and Africa. Plants are used as an ethnomedicine in Asia and Africa to treat various ailments like diabetes, fever, diarrhoea, dysentery, tuberculosis, wound healing, skin diseases (eczema, psoriasis), snake and scorpion venom. Based on the traditional knowledge, different phytochemical and pharmacological activities have been at the focus of research. The aim of this review is to provide updated, comprehensive and categorized information on the ethnobotany, phytochemistry, pharmacological research and toxicity of Anogeissus species in order to identify their therapeutic potential and directs future research opportunities. MATERIALS AND METHODS The relevant data was searched by using the keyword "Anogeissus" in "Scopus", "Google Scholar", "Web of Science", "PubMed", and "ScienceDirect" databases. Plant taxonomy was validated by the databases "The Plant List" and A.J. Scott, 1979. RESULTS This review discusses the current knowledge of the ethnobotany, phytochemistry and in vitro as well as in vivo pharmacological evaluations carried out on the extracts and isolated main active constituents of Anogeissus genus. Among eight species, most of the phytochemical and pharmacological studies were performed on four species. About 55 secondary metabolites are isolated from the genus. Stem bark, leaf, seed, fruit, root of the plants are used for the treatment of several health disorders such as diabetes, fever, diarrhoea, dysentery, tuberculosis, wound healing, skin diseases (eczema, psoriasis), snake and scorpion venom. Gum ghatti obtained from Anogeissus latifolia is used after delivery as tonic and in spermatorrhoea. Many phytochemical investigations on this genus confirmed that it is rich in phenolic compounds. Modern pharmacology research has confirmed that the crude extracts or the isolated active compounds of the genus Anogeissus possess antioxidant, antimicrobial, wound healing, antiulcer, anti-inflammation, anti-diabetics, hepatoprotective, hypolipidemic, antiparasitic and neuroprotective effects. CONCLUSIONS This review confirms that some Anogeissus species have emerged as a good source of the traditional medicine for wound healing, inflammation, skin diseases, microbial infection and diabetes. Many traditional uses of Anogeissus species have now been validated by modern pharmacology research. Intensive investigations of all the species of Anogeissus regarding phytochemical and pharmacological properties, especially their mechanism of action, safety and efficacy could be the future research interests before starting clinical trials.
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Affiliation(s)
- Deeksha Singh
- Department of Pharmacy, Banasthali Vidyapith, Rajasthan, India; Khalsa College of Pharmacy, Punjab, India
| | | | | | | | - Divya Yadav
- Department of Pharmacy, Banasthali Vidyapith, Rajasthan, India
| | - Jai Malik
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Rakesh Yadav
- Department of Pharmacy, Banasthali Vidyapith, Rajasthan, India.
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23
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Austarheim I, Pham AT, Nguyen C, Zou YF, Diallo D, Malterud KE, Wangensteen H. Antiplasmodial, anti-complement and anti-inflammatory in vitro effects of Biophytum umbraculum Welw. traditionally used against cerebral malaria in Mali. JOURNAL OF ETHNOPHARMACOLOGY 2016; 190:159-164. [PMID: 27260410 DOI: 10.1016/j.jep.2016.05.058] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 05/10/2016] [Accepted: 05/29/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Biophytum umbraculum Welw. (Oxalidaceae) is a highly valued African medicinal plant used for treatment of cerebral malaria, a critical complication of falciparum malaria. AIM OF THE STUDY To provide additional information about traditional use of B. umbraculum and to test plant extracts and isolated compounds for in vitro activities related to cerebral malaria. MATERIALS AND METHODS The traditional practitioners were questioned about indication, mode of processing/application, dosage and local name of B. umbraculum. Organic extracts and some main constituents of the plant were investigated for anti-malaria, anti-complement activity and inhibition of NO secretion in a RAW 264.7 cell line. RESULTS Treatment of cerebral malaria was the main use of B. umbraculum (fidelity level 56%). The ethyl acetate extract showed anti-complement activity (ICH50 5.7±1.6μg/ml), inhibition of macrophage activation (IC50 16.4±1.3μg/ml) and in vitro antiplasmodial activity (IC50 K1 5.6±0.13μg/ml, IC50 NF54 6.7±0.03μg/ml). The main constituents (flavone C-glycosides) did not contribute to the activity of the extract. CONCLUSION Inhibition of complement activation and anti-inflammatory activity of B. umbraculum observed in this study might be possible targets for adjunctive therapy in cerebral malaria together with its antiplasmodial activity. However, clinical trials are necessary to evaluate the activity due to the complex pathogenesis of cerebral malaria.
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MESH Headings
- Acetates/chemistry
- Animals
- Anti-Inflammatory Agents/isolation & purification
- Anti-Inflammatory Agents/pharmacology
- Antimalarials/isolation & purification
- Antimalarials/pharmacology
- Complement Inactivating Agents/isolation & purification
- Complement Inactivating Agents/pharmacology
- Dose-Response Relationship, Drug
- Ethnopharmacology
- Humans
- Inhibitory Concentration 50
- Lipopolysaccharides/pharmacology
- Macrophage Activation/drug effects
- Macrophages/drug effects
- Macrophages/immunology
- Macrophages/metabolism
- Macrophages/parasitology
- Malaria, Cerebral/immunology
- Malaria, Cerebral/metabolism
- Malaria, Cerebral/parasitology
- Malaria, Cerebral/prevention & control
- Malaria, Falciparum/immunology
- Malaria, Falciparum/metabolism
- Malaria, Falciparum/prevention & control
- Mali
- Medicine, African Traditional
- Mice
- Nitric Oxide/metabolism
- Oxalidaceae/chemistry
- Phytotherapy
- Plant Components, Aerial/chemistry
- Plant Extracts/isolation & purification
- Plant Extracts/pharmacology
- Plants, Medicinal
- Plasmodium falciparum/drug effects
- Plasmodium falciparum/growth & development
- RAW 264.7 Cells
- Solvents/chemistry
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Affiliation(s)
- Ingvild Austarheim
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway.
| | - Anh Thu Pham
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway.
| | - Celine Nguyen
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway.
| | - Yuan-Feng Zou
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway.
| | - Drissa Diallo
- Department of Traditional Medicine, P.O. Box 1746, Bamako, Mali.
| | - Karl Egil Malterud
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway.
| | - Helle Wangensteen
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway.
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Tuenter E, Exarchou V, Baldé A, Cos P, Maes L, Apers S, Pieters L. Cyclopeptide Alkaloids from Hymenocardia acida. JOURNAL OF NATURAL PRODUCTS 2016; 79:1746-1751. [PMID: 27351950 DOI: 10.1021/acs.jnatprod.6b00131] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Four cyclopeptide alkaloids (1-4) were isolated from the root bark of Hymenocardia acida by means of semipreparative HPLC with DAD and ESIMS detection and conventional separation methods. Structure elucidation was performed by spectroscopic means. In addition to the known compound hymenocardine (1), three other alkaloids were isolated for the first time from a natural source. These included a hymenocardine derivative with a hydroxy group instead of a carbonyl group that was named hymenocardinol (2), as well as hymenocardine N-oxide (3) and a new cyclopeptide alkaloid containing an unusual histidine moiety named hymenocardine-H (4). The isolated cyclopeptide alkaloids were tested for their antiplasmodial activity and cytotoxicity. All four compounds showed moderate antiplasmodial activity, with IC50 values ranging from 12.2 to 27.9 μM, the most active one being hymenocardine N-oxide (3), with an IC50 value of 12.2 ± 6.6 μM. Compounds 2-4 were found not to be cytotoxic against MRC-5 cells (IC50 > 64.0 μM), but hymenocardine (1) showed some cytotoxicity, with an IC50 value of 51.1 ± 17.2 μM.
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Affiliation(s)
| | | | - Aliou Baldé
- Research and Valorization Center on Medicinal Plants , Dubréka, Guinea-Conakry
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25
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Fröhlich T, Çapcı Karagöz A, Reiter C, Tsogoeva SB. Artemisinin-Derived Dimers: Potent Antimalarial and Anticancer Agents. J Med Chem 2016; 59:7360-88. [PMID: 27010926 DOI: 10.1021/acs.jmedchem.5b01380] [Citation(s) in RCA: 114] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The development of new efficient therapeutics for the treatment of malaria and cancer is an important endeavor. Over the past 15 years, much attention has been paid to the synthesis of dimeric structures, which combine two units of artemisinin, as lead compounds of interest. A wide variety of atemisinin-derived dimers containing different linkers demonstrate improved properties compared to their parent compounds (e.g., circumventing multidrug resistance), making the dimerization concept highly compelling for development of efficient antimalarial and anticancer drugs. The present Perspective highlights recent developments on different types of artemisinin-derived dimers and their structural and functional features. Particular emphasis is put on the respective in vitro and in vivo studies, exploring the role of the length and nature of linkers on the activities of the dimers, and considering the future prospects of the dimerization concept for drug discovery.
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Affiliation(s)
- Tony Fröhlich
- Department of Chemistry and Pharmacy, Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg , Henkestrasse 42, 91054 Erlangen, Germany
| | - Aysun Çapcı Karagöz
- Department of Chemistry and Pharmacy, Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg , Henkestrasse 42, 91054 Erlangen, Germany
| | - Christoph Reiter
- Department of Chemistry and Pharmacy, Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg , Henkestrasse 42, 91054 Erlangen, Germany
| | - Svetlana B Tsogoeva
- Department of Chemistry and Pharmacy, Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), University of Erlangen-Nürnberg , Henkestrasse 42, 91054 Erlangen, Germany
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26
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Suleiman MHA. An ethnobotanical survey of medicinal plants used by communities of Northern Kordofan region, Sudan. JOURNAL OF ETHNOPHARMACOLOGY 2015; 176:232-42. [PMID: 26519203 DOI: 10.1016/j.jep.2015.10.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 10/19/2015] [Accepted: 10/26/2015] [Indexed: 05/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The present study provides significant ethnopharmacological information on plant species used in North Kordofan region, western Sudan. The study was undertaken with an aim to document the medicinal uses of the species known to some Northern Kordofan communities. MATERIAL AND METHODS The study was conducted between 2012 and 2013. The plants were identified and voucher specimens prepared. Information was collected by means of semi-structured interviews with 258 informants (195 men and 63 women). In addition, the use value (UV) of the species was determined and the informant consensus factor (ICF) was calculated for the medicinal plants researched in the study. Further analysis was carried out to compare results with previous studies from the study area and other regions of Sudan. RESULTS A total of 44 plant species representing 24 families were found to be commonly used in the treatment of 73 different human health problems. The families most represented were Leguminosae (18%), Caesalpiniaceae (9%), Malvaceae (9%), Asclepiadaceae (6.8%) and Combretaceae (6.8%). The highest number of plant species are used against digestive system disorders (23 species) followed by microbial infections (21 species) and dermatology (19 species). Among all the plant parts leaves (20%), roots (19%), fruits and bark (14% each) were the most preferred plant parts used by the informants. There was strong agreement among the informants as to the usages of the plants (informant consensus factor 0.63-0.93). The most important plants on the basis of use-value were Acacia nilotica, Acacia seyal, Balanites aegyptiaca, Cassia occidentalis, Cassia senna, Guiera senegalensis and Tamarindus indica. CONCLUSION This study has helped to document information that may otherwise be lost to future generations. This is the first ethnobotanical study in which statistical calculations about plants are carried out by means of the ICF and UV methods in the study area. Plants with high ICF and UV values should be subjected for further phytochemical and pharmacological investigation for scientific validation.
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27
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Lamien-Meda A, Kiendrebeogo M, Compaoré M, Meda RNT, Bacher M, Koenig K, Pacher T, Fuehrer HP, Noedl H, Willcox M, Novak J. Quality assessment and antiplasmodial activity of West African Cochlospermum species. PHYTOCHEMISTRY 2015; 119:51-61. [PMID: 26429632 DOI: 10.1016/j.phytochem.2015.09.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 09/15/2015] [Accepted: 09/16/2015] [Indexed: 05/03/2023]
Abstract
The present study focuses on development of phytochemical methods for quality assessment of two West-African Cochlospermum species (Cochlospermum planchonii and Cochlospermum tinctorium) traditionally used for malaria treatment in Burkina Faso. Antimalarial activity of preparations from dried rhizomes (decoction) was tested against the chloroquine-sensitive Plasmodium strain 3D7 using the histidine-rich protein II (HRP2) drug susceptibility assay and compared with extract preparations using organic solvents of different polarity. Two main apocarotenoids were isolated from rhizomes of C. planchonii and unambiguously identified as dihydrocochloxanthine and cochloxanthine by spectroscopic methods. Comparative HPLC analyses of thirty-nine (39) samples from markets and from collections in natural habitats of both species showed a high variability in the accumulation of cochloxanthines and related carotenoids which were proven to be characteristic for rhizomes of both species and generally absent in leaves. Furthermore, content of total phenolics and antioxidant activities (DPPH and FRAP) as well as haemolytic activity of various extracts was tested. The HPLC method presented here was validated and provides a good separation of both compounds including 10 minor carotenoids. Extracts from both species and pure cochloxanthine offered pronounced antioxidant activities and weak haemolytic activity while, in contrast, dihydrocochloxanthine had a strong haemolytic effect at the highest concentration analysed. However, cochloxanthine as well as dihydrocochloxanthine showed erythroprotective effects against the haemolytic activity of the reference saponin. Moderate antiplasmodial activity between 16 and 63 μg/ml were observed with all tested extracts, and lower IC50 values were obtained with pure dihydrocochloxanthine (IC50=6.9 μg/ml), cochloxanthine (IC50=6.8 μg/ml), the DCM fraction (IC50=2.4 μg/ml) and the ethyl acetate fraction (IC50=11.5μg/ml) derived from a methanolic extract of C. planchonii. This study shows a major variability of carotenoid content and antiplasmodial activity of both C. planchonii and C. tinctorium. The high haemolytic activity of dihydrocochloxanthine (at 100 μg/ml) should be considered as a selection criterion for choosing species phenotypes for treatment.
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Affiliation(s)
- Aline Lamien-Meda
- Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine, Veterinaerplatz 1, A-1210 Vienna, Austria.
| | - Martin Kiendrebeogo
- Laboratoire de Biochimie et Chimie Appliquées, LABIOCA, University of Ouagadougou, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Moussa Compaoré
- Laboratoire de Biochimie et Chimie Appliquées, LABIOCA, University of Ouagadougou, 03 BP 7021 Ouagadougou 03, Burkina Faso
| | - Roland N T Meda
- UFR Sciences et Techniques, Polytechnic University of Bobo Dioulasso, 01 BP 1091 Bobo 01, Burkina Faso
| | - Markus Bacher
- Division of Chemistry of Renewables, Department of Chemistry, University of Natural Resources and Life Sciences, Konrad Lorenz Straße 24, A-3430 Tulln an der Donau, Austria
| | - Karin Koenig
- Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine, Veterinaerplatz 1, A-1210 Vienna, Austria
| | - Thomas Pacher
- Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine, Veterinaerplatz 1, A-1210 Vienna, Austria
| | - Hans-Peter Fuehrer
- Institute of Parasitology, University of Veterinary Medicine, Veterinaerplatz 1, A-1210 Vienna, Austria
| | - Harald Noedl
- Institute of Specific Prophylaxis and Tropical Medicine, Medical University of Vienna, Kinderspitalgasse 15, A-1090 Vienna, Austria
| | - Merlin Willcox
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Radcliffe Observatory Quarter, Woodstock Road, Oxford OX2 6GG, UK
| | - Johannes Novak
- Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine, Veterinaerplatz 1, A-1210 Vienna, Austria
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28
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Caamal-Fuentes EE, Peraza-Sánchez SR, Torres-Tapia LW, Moo-Puc RE. Isolation and Identification of Cytotoxic Compounds from Aeschynomene fascicularis, a Mayan Medicinal Plant. Molecules 2015. [PMID: 26213910 PMCID: PMC6332200 DOI: 10.3390/molecules200813563] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The plant Aeschynomene fascicularis (Fabaceae) has been used in Mayan traditional medicine in the Yucatan peninsula. However, the compounds present in the plant responsible for its curative properties have not yet been investigated. Aeschynomene fascicularis root bark was extracted with 100% methanol to obtain a crude extract. The methanol extract was partitioned successively with solvents with increasing polarity to obtain the corresponding hexane (Hx), dichloromethane (DCM) and ethyl acetate fractions (EtOAc), as well as a residual water-alcoholic fraction. These fractions were tested for their cytotoxic activities using an MTT assay against Hep-2 cancer cell lines. The Hx fraction led to the isolation of spinochalcone C (1), spinochalcone A (2), isocordoin (3) and secundiflorol G (4). Their structures were identified based on spectroscopic evidence and chemical properties. All compounds were subjected to cytotoxicity and antiproliferative assays against a panel of seven cell lines, including one normal-type cell line. Spinochalcone A (2) exhibited cytotoxic activity against DU-145 cell line and antiproliferative activity against the KB cell line. Secundiflorol G (4) showed strong cytotoxic activity towards KB and Hep-2 cell lines. In addition, isocordoin (3) showed moderate activity on KB, Hep-2 and DU-145 cell lines. The active Compounds 2, 3 and 4 are potential therapeutic entities against cancer.
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Affiliation(s)
- Edgar E Caamal-Fuentes
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán (CICY), Calle 43 No. 130, Col. Chuburná de Hidalgo, Mérida, Yucatán 97200, Mexico.
| | - Sergio R Peraza-Sánchez
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán (CICY), Calle 43 No. 130, Col. Chuburná de Hidalgo, Mérida, Yucatán 97200, Mexico.
| | - Luis W Torres-Tapia
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán (CICY), Calle 43 No. 130, Col. Chuburná de Hidalgo, Mérida, Yucatán 97200, Mexico.
| | - Rosa E Moo-Puc
- Unidad de Investigación Médica Yucatán, Unidad Médica de Alta Especialidad, Centro Médico Ignacio García Téllez, Instituto Mexicano del Seguro Social (IMSS), Calle 41 No. 439, Col. Industrial, Mérida, Yucatán 97150, Mexico.
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Hafidh RR, Abdulamir AS, Abu Bakar F, Sekawi Z, Jahansheri F, Jalilian FA. Novel antiviral activity of mung bean sprouts against respiratory syncytial virus and herpes simplex virus -1: an in vitro study on virally infected Vero and MRC-5 cell lines. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 15:179. [PMID: 26062546 PMCID: PMC4461985 DOI: 10.1186/s12906-015-0688-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Accepted: 05/21/2015] [Indexed: 01/26/2023]
Abstract
BACKGROUND New sources for discovering novel antiviral agents are desperately needed. The current antiviral products are both expensive and not very effective. METHODS The antiviral activity of methanol extract of mung bean sprouts (MBS), compared to Ribavarin and Acyclovir, on respiratory syncytial virus (RSV) and Herpes Simplex virus -1 (HSV-1) was investigated using cytotoxicity, virus yield reduction, virucidal activity, and prophylactic activity assays on Vero and MRC-5 cell lines. Moreover, the level of antiviral cytokines, IFNβ, TNFα, IL-1, and IL-6 was assessed in MBS-treated, virally infected, virally infected MBS-treated, and control groups of MRC-5 cells using ELISA. RESULTS MBS extract showed reduction factors (RF) 2.2 × 10 and 0.5 × 10(2) for RSV and HSV-1, respectively. The 2 h incubation virucidal and prophylactic selectivity indices (SI) of MBS on RSV were 14.18 and 12.82 versus Ribavarin SI of 23.39 and 21.95, respectively, and on HSV-1, SI were 18.23 and 10.9 versus Acyclovir, 22.56 and 15.04, respectively. All SI values were >10 indicating that MBS has a good direct antiviral and prophylactic activities on both RSV and HSV-1. Moreover, interestingly, MBS extract induced vigorously IFNβ, TNFα, IL-1, and IL-6 cytokines in MRC-5 infected-treated group far more than other groups (P < 0.05) and induced TNFα and IL-6 in treated group more than infected group (P < 0.05). CONCLUSIONS MBS extract has potent antiviral and to a lesser extent, prophylactic activities against both RSV and HSV-1, and in case of HSV-1, these activities were comparable to Acyclovir. Part of the underlying mechanism(s) of these activities is attributed to MBS potential to remarkably induce antiviral cytokines in human cells. Hence, we infer that MBS methanol extract could be used as such or as purified active component in protecting and treating RSV and HSV-1 infections. More studies are needed to pinpoint the exact active components responsible for the MBS antiviral activities.
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Diarra N, Klooster CV, Togola A, Diallo D, Willcox M, Jong JD. Ethnobotanical study of plants used against malaria in Sélingué subdistrict, Mali. JOURNAL OF ETHNOPHARMACOLOGY 2015; 166:352-60. [PMID: 25752587 DOI: 10.1016/j.jep.2015.02.054] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 02/04/2015] [Accepted: 02/26/2015] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Plants have contributed to food security and disease treatments to rural populations in sub Saharan Africa for many centuries. These plants occupy a significant place in the treatment of diseases, such as malaria. In Mali, malaria is the leading cause of medical consultation and death. This infection is particularly dangerous for pregnant women and children under 5 years. The general aim of this research was to collect data on the knowledge of traditional health practitioners on malaria in the Sélingué area; particularly to document how traditional healers conceptualize and diagnose malarial disease and to collect and identify medicinal plants or other substances used for their health and well-being. MATERIALS AND METHODS An ethnobotanical survey was conducted on simple and complicated malaria in six villages in Sélingué subdistrict in a period of 2 months. The ethnobotanical data was collected by means of semi-structured interviews and questionnaires. In total 50 traditional healers were interviewed. RESULTS Two concepts of malaria (simple and complicated malaria) were cited and 97 plants used to treat malaria were identified. Decoctions and bathing (whole body) proved to be the most commonly used mode of application. Food attitudes and mosquitoes are perceived to be the most important causes of the disease. Trichilia emetica, Mitragyna inermis, Sarcocephalus latifolius, Cassia sieberiana, Cochlospermum tinctorium, Anogeissus leiocarpa, Guiera senegalensis and Entada africana were quoted as the most used in the treatment of malaria. CONCLUSION Knowledge about malaria and traditional treatment practices exist in Sélingué subdistrict. Herbal remedies are commonly used by people for the treatment of malaria because they are believed to be cost-effective and more accessible. Many of the plant species used for the treatment of malaria have not been well documented as well as their phytochemical and antimalarial activity.
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Affiliation(s)
- Nouhoum Diarra
- Faculté des sciences et techniques (FST), Université de sciences des techniques et des technologies de Bamako (USTTB), Colline de Badalabougou, Badalabougou, Bamako, Mali
| | - Charlotte Van't Klooster
- Amsterdam Institute of Social Sciences (AISS), University of Amsterdam, P.O. Box 15718, 1001, Netherlands
| | - Adiaratou Togola
- Département de Médecine Traditionnelle (DMT), Institut National de Recherche en Santé Publique (INRSP), Route de Sotuba, face Sotelco, BP 1746 Bamako, Mali
| | - Drissa Diallo
- Faculté de Pharmacie, Université de sciences des techniques et des technologies de Bamako (USTTB), Bamako, Mali; Département de Médecine Traditionnelle (DMT), Institut National de Recherche en Santé Publique (INRSP), Route de Sotuba, face Sotelco, BP 1746 Bamako, Mali.
| | - Merlin Willcox
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Radcliffe Observatory Quarter, Woodstock Road, Oxford OX2 6GG, UK
| | - Joop de Jong
- Amsterdam Institute of Social Sciences (AISS), University of Amsterdam, P.O. Box 15718, 1001, Netherlands
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Dakuyo Z, Meda AL, Ollo D, Kiendrebeogo M, Traoré-Coulibaly M, Novak J, Benoit-Vical F, Weisbord E, Willcox M. SAYE: the story of an antimalarial phytomedicine from Burkina Faso. J Altern Complement Med 2015; 21:187-95. [PMID: 25826205 DOI: 10.1089/acm.2014.0147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ngwira KJ, Maharaj VJ, Mgani QA. In vitro antiplasmodial and HIV-1 neutralization activities of root and leaf extracts from Berberis holstii. J Herb Med 2015. [DOI: 10.1016/j.hermed.2014.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Bapela MJ, Meyer JJM, Kaiser M. In vitro antiplasmodial screening of ethnopharmacologically selected South African plant species used for the treatment of malaria. JOURNAL OF ETHNOPHARMACOLOGY 2014; 156:370-3. [PMID: 25245771 DOI: 10.1016/j.jep.2014.09.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 08/16/2014] [Accepted: 09/10/2014] [Indexed: 05/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Plant species used by Venda people of South Africa in the treatment of malaria and associated symptoms were evaluated for their antiplasmodial efficacy as well as cytotoxic properties and some showed significant activity. MATERIALS AND METHODS In vitro antiplasmodial activity and cytotoxic properties were evaluated on 20 indigenous plant species. Ground plant material was extracted in dichloromethane: 50% methanol (1:1). Antiplasmodial activity was evaluated against the chloroquine-sensitive strain of Plasmodium falciparum (NF54). The cytotoxicity of the plant extracts were assessed against mammalian L-6 rat skeletal myoblast cells and the selectivity index (SI) calculated. RESULTS Of the 43 plant extracts evaluated, 10 exhibited pronounced antiplasmodial activity (IC₅₀ ≤ 5 μg/ml) with good therapeutic indices (SI ≥ 10). Lipophilic plant extracts were relatively more potent than polar extracts. Tabernaemontana elegans Stapf. (Apocynaceae) and Vangueria infausta Burch. subsp. infausta (Rubiaceae) extracts displayed significant antiplasmodial activity (IC₅₀ < 2 μg/ml). CONCLUSION Findings of this study partly support the ethnomedical use of the investigated plant species by Venda people as antimalarial remedies. The study also highlights some of the knowledge gaps that require further phytochemical studies on the specified plant species.
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Affiliation(s)
- M Johanna Bapela
- Department of Plant Science, Plant Sciences Complex, University of Pretoria, Hatfield 0083, South Africa.
| | - J J Marion Meyer
- Department of Plant Science, Plant Sciences Complex, University of Pretoria, Hatfield 0083, South Africa
| | - Marcel Kaiser
- Swiss Tropical and Public Health Institute, Socinstrasse 57, CH-4002 Basel, Switzerland
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Ntie-Kang F, Onguéné PA, Lifongo LL, Ndom JC, Sippl W, Mbaze LM. The potential of anti-malarial compounds derived from African medicinal plants, part II: a pharmacological evaluation of non-alkaloids and non-terpenoids. Malar J 2014; 13:81. [PMID: 24602358 PMCID: PMC3975711 DOI: 10.1186/1475-2875-13-81] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 02/25/2014] [Indexed: 11/10/2022] Open
Abstract
Malaria is currently a public health concern in many countries in the world due to various factors which are not yet under check. Drug discovery projects targeting malaria often resort to natural sources in the search for lead compounds. A survey of the literature has led to a summary of the major findings regarding plant-derived compounds from African flora, which have shown anti-malarial/antiplasmodial activities, tested by in vitro and in vivo assays. Considerations have been given to compounds with activities ranging from "very active" to "weakly active", leading to >500 chemical structures, mainly alkaloids, terpenoids, flavonoids, coumarins, phenolics, polyacetylenes, xanthones, quinones, steroids and lignans. However, only the compounds that showed anti-malarial activity, from "very active" to "moderately active", are discussed in this review.
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Affiliation(s)
| | | | | | | | | | - Luc Meva'a Mbaze
- Department of Chemistry, Faculty of Science, University of Douala, PO Box 24157, Douala, Cameroon.
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Hubert J, Nuzillard JM, Purson S, Hamzaoui M, Borie N, Reynaud R, Renault JH. Identification of natural metabolites in mixture: a pattern recognition strategy based on (13)C NMR. Anal Chem 2014; 86:2955-62. [PMID: 24555703 DOI: 10.1021/ac403223f] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Because of their highly complex metabolite profile, the chemical characterization of bioactive natural extracts usually requires time-consuming multistep purification procedures to achieve the structural elucidation of pure individual metabolites. The aim of the present work was to develop a dereplication strategy for the identification of natural metabolites directly within mixtures. Exploiting the polarity range of metabolites, the principle was to rapidly fractionate a multigram quantity of a crude extract by centrifugal partition extraction (CPE). The obtained fractions of simplified chemical composition were subsequently analyzed by (13)C NMR. After automatic collection and alignment of (13)C signals across spectra, hierarchical clustering analysis (HCA) was performed for pattern recognition. As a result, strong correlations between (13)C signals of a single structure within the mixtures of the fraction series were visualized as chemical shift clusters. Each cluster was finally assigned to a molecular structure with the help of a locally built (13)C NMR chemical shift database. The proof of principle of this strategy was achieved on a simple model mixture of commercially available plant secondary metabolites and then applied to a bark extract of the African tree Anogeissus leiocarpus Guill. & Perr. (Combretaceae). Starting from 5 g of this genuine extract, the fraction series was generated by CPE in only 95 min. (13)C NMR analyses of all fractions followed by pattern recognition of (13)C chemical shifts resulted in the unambiguous identification of seven major compounds, namely, sericoside, trachelosperogenin E, ellagic acid, an epimer mixture of (+)-gallocatechin and (-)-epigallocatechin, 3,3'-di-O-methylellagic acid 4'-O-xylopyranoside, and 3,4,3'-tri-O-methylflavellagic acid 4'-O-glucopyranoside.
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Affiliation(s)
- Jane Hubert
- Institut de Chimie Moléculaire de Reims (UMR CNRS 7312), SFR CAP'SANTE, Université de Reims Champagne-Ardenne , Reims, France
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Starks CM, Williams RB, Norman VL, Rice SM, O'Neil-Johnson M, Lawrence JA, Eldridge GR. Antibacterial chromene and chromane stilbenoids from Hymenocardia acida. PHYTOCHEMISTRY 2014; 98:216-222. [PMID: 24361290 DOI: 10.1016/j.phytochem.2013.11.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Revised: 10/30/2013] [Accepted: 11/21/2013] [Indexed: 06/03/2023]
Abstract
Six chromene stilbenoids and one chromane stilbenoid were isolated from the African tree Hymenocardia acida. Several were moderately active against methicillin-resistant Staphylococcus aureus clinical isolate MRSA-108, including hymenocardichromanic acid, which was active at 8 μg/ml. None had IC50 values <20 μM in antiproliferation assays against several human cancer cell lines.
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Affiliation(s)
- Courtney M Starks
- Lead Discovery and Rapid Structure Elucidation Group, Sequoia Sciences, Inc., 1912 Innerbelt Business Center Drive, St. Louis, MO 63114, United States.
| | - Russell B Williams
- Lead Discovery and Rapid Structure Elucidation Group, Sequoia Sciences, Inc., 1912 Innerbelt Business Center Drive, St. Louis, MO 63114, United States
| | - Vanessa L Norman
- Lead Discovery and Rapid Structure Elucidation Group, Sequoia Sciences, Inc., 1912 Innerbelt Business Center Drive, St. Louis, MO 63114, United States
| | - Stephanie M Rice
- Lead Discovery and Rapid Structure Elucidation Group, Sequoia Sciences, Inc., 1912 Innerbelt Business Center Drive, St. Louis, MO 63114, United States
| | - Mark O'Neil-Johnson
- Lead Discovery and Rapid Structure Elucidation Group, Sequoia Sciences, Inc., 1912 Innerbelt Business Center Drive, St. Louis, MO 63114, United States
| | - Julie A Lawrence
- Lead Discovery and Rapid Structure Elucidation Group, Sequoia Sciences, Inc., 1912 Innerbelt Business Center Drive, St. Louis, MO 63114, United States
| | - Gary R Eldridge
- Lead Discovery and Rapid Structure Elucidation Group, Sequoia Sciences, Inc., 1912 Innerbelt Business Center Drive, St. Louis, MO 63114, United States
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Amoa Onguéné P, Ntie-Kang F, Lifongo LL, Ndom JC, Sippl W, Mbaze LM. The potential of anti-malarial compounds derived from African medicinal plants, part I: a pharmacological evaluation of alkaloids and terpenoids. Malar J 2013; 12:449. [PMID: 24330395 PMCID: PMC3878730 DOI: 10.1186/1475-2875-12-449] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 12/10/2013] [Indexed: 12/20/2022] Open
Abstract
Traditional medicine caters for about 80% of the health care needs of many rural populations around the world, especially in developing countries. In addition, plant-derived compounds have played key roles in drug discovery. Malaria is currently a public health concern in many countries in the world due to factors such as chemotherapy faced by resistance, poor hygienic conditions, poorly managed vector control programmes and no approved vaccines. In this review, an attempt has been made to assess the value of African medicinal plants for drug discovery by discussing the anti-malarial virtue of the derived phytochemicals that have been tested by in vitro and in vivo assays. This survey was focused on pure compounds derived from African flora which have exhibited anti-malarial properties with activities ranging from "very active" to "weakly active". However, only the compounds which showed anti-malarial activities from "very active" to "moderately active" are discussed in this review. The activity of 278 compounds, mainly alkaloids, terpenoids, flavonoids, coumarines, phenolics, polyacetylenes, xanthones, quinones, steroids, and lignans have been discussed. The first part of this review series covers the activity of 171 compounds belonging to the alkaloid and terpenoid classes. Data available in the literature indicated that African flora hold an enormous potential for the development of phytomedicines for malaria.
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Affiliation(s)
- Pascal Amoa Onguéné
- Department of Chemistry, Faculty of Science, University of Douala, PO Box 24157, Douala, Cameroon
| | - Fidele Ntie-Kang
- Chemical and Bioactivity Information Centre, Department of Chemistry, Faculty of Science, University of Buea, PO Box 63, Buea, Cameroon
| | - Lydia Likowo Lifongo
- Chemical and Bioactivity Information Centre, Department of Chemistry, Faculty of Science, University of Buea, PO Box 63, Buea, Cameroon
| | - Jean Claude Ndom
- Department of Chemistry, Faculty of Science, University of Douala, PO Box 24157, Douala, Cameroon
| | - Wolfgang Sippl
- Department of Pharmaceutical Sciences, Martin-Luther University of Halle-Wittenberg, Wolfgang-Langenbeck Str. 4, Halle, Saale 06120, Germany
| | - Luc Meva’a Mbaze
- Department of Chemistry, Faculty of Science, University of Douala, PO Box 24157, Douala, Cameroon
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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. JOURNAL OF ETHNOPHARMACOLOGY 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] [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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Hafidh R, Abdulamir A, Abu Bakar F, Jalilian F, Jahanshiri F, Abas F, Sekawi Z. Novel anticancer activity and anticancer mechanisms of Brassica oleracea L. var. capitata f. rubra. Eur J Integr Med 2013. [DOI: 10.1016/j.eujim.2013.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hamzaoui M, Renault JH, Reynaud R, Hubert J. Centrifugal partition extraction in the pH-zone-refining displacement mode: An efficient strategy for the screening and isolation of biologically active phenolic compounds. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 937:7-12. [DOI: 10.1016/j.jchromb.2013.07.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 07/19/2013] [Accepted: 07/23/2013] [Indexed: 11/27/2022]
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Martinez JP, Hinkelmann B, Fleta-Soriano E, Steinmetz H, Jansen R, Diez J, Frank R, Sasse F, Meyerhans A. Identification of myxobacteria-derived HIV inhibitors by a high-throughput two-step infectivity assay. Microb Cell Fact 2013; 12:85. [PMID: 24063434 PMCID: PMC3852058 DOI: 10.1186/1475-2859-12-85] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Accepted: 09/19/2013] [Indexed: 11/24/2022] Open
Abstract
Background Drug-resistance and therapy failure due to drug-drug interactions are the main challenges in current treatment against Human Immunodeficiency Virus (HIV) infection. As such, there is a continuous need for the development of new and more potent anti-HIV drugs. Here we established a high-throughput screen based on the highly permissive TZM-bl cell line to identify novel HIV inhibitors. The assay allows discriminating compounds acting on early and/or late steps of the HIV replication cycle. Results The platform was used to screen a unique library of secondary metabolites derived from myxobacteria. Several hits with good anti-HIV profiles were identified. Five of the initial hits were tested for their antiviral potency. Four myxobacterial compounds, sulfangolid C, soraphen F, epothilon D and spirangien B, showed EC50 values in the nM range with SI > 15. Interestingly, we found a high amount of overlapping hits compared with a previous screen for Hepatitis C Virus (HCV) using the same library. Conclusion The unique structures and mode-of-actions of these natural compounds make myxobacteria an attractive source of chemicals for the development of broad-spectrum antivirals. Further biological and structural studies of our initial hits might help recognize smaller drug-like derivatives that in turn could be synthesized and further optimized.
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Affiliation(s)
- Javier P Martinez
- Infection Biology Group, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain.
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Bonellia albiflora: A Mayan Medicinal Plant That Induces Apoptosis in Cancer Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:823453. [PMID: 23843884 PMCID: PMC3703432 DOI: 10.1155/2013/823453] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 05/31/2013] [Accepted: 06/01/2013] [Indexed: 12/15/2022]
Abstract
Few studies have been carried out on the medical flora of Mexico's Yucatan Peninsula in search for new therapeutic agents, in particular against cancer. In this paper, we evaluated the cytotoxic potential of the extract of Bonellia albiflora, a plant utilized in the traditional Mayan medicine for treatment of chronic injuries of the mouth. We carried out the methanolic extracts of different parts of the plant by means of extraction with the Soxhlet equipment. We conducted liquid-liquid fractions on each extract with solvents of increasing polarity. All extracts and fractions were evaluated for cytotoxic activity versus four human cancer cell lines and one normal cell line through a tetrazolium dye reduction (MTT) assay in 96-well cell culture plates. The methanolic root-bark extract possessed much greater cytotoxic activity in the human oropharyngeal cancer cell line (KB); its hexanic fraction concentrated the active metabolites and induced apoptosis with the activation of caspases 3 and 8. The results demonstrate the cytotoxic potential of the B. albiflora hexanic fraction and substantiate the importance of the study of the traditional Mayan medicinal plants.
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Hamzaoui M, Renault JH, Nuzillard JM, Reynaud R, Hubert J. Stepwise elution of a three-phase solvent system in centrifugal partition extraction: a new strategy for the fractionation and phytochemical screening of a crude bark extract. PHYTOCHEMICAL ANALYSIS : PCA 2013; 24:367-373. [PMID: 23427023 DOI: 10.1002/pca.2418] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 11/02/2012] [Accepted: 12/07/2012] [Indexed: 06/01/2023]
Abstract
INTRODUCTION Tree bark represents an interesting source of bioactive molecules for the discovery of new pharmaceutical agents. However, the detailed screening of secondary metabolites in crude bark extracts is often hampered by the presence of tannins, which are difficult to separate from other plant constituents. OBJECTIVE In the present study, a new centrifugal partition extraction (CPE) method was developed in order to fractionate a crude bark extract of Anogeissus leiocarpus Guill. & Perr. (Combretaceae). METHODS A three-phase solvent system composed of n-heptane, methyl tert-butyl ether, acetonitrile and water was optimised for the stepwise elution at 20 mL/min of different phytochemical classes according to their hydrophobicity. Onedimensional and two-dimensional NMR analyses of the simplified fractions were then performed in order to characterise potentially interesting metabolites. RESULTS In one step, 5 g of the initial crude extract were efficiently fractionated to yield highly simplified fractions that contained triterpenes, ellagic acid derivatives, flavonoids and phenolic compounds. All undesired compounds, that is, the highly abundant water-soluble tannins (78.8%), were totally removed and each run was rapidly achieved in 90 min on a the multi-gram scale and with low solvent volumes. CONCLUSION Centrifugal partition extraction in the elution mode using a three-phase solvent system can thus be proposed as an efficient and cost-effective alternative for a rapid fractionation of crude bark extracts and for an effective screening of potentially active secondary metabolites.
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Affiliation(s)
- Mahmoud Hamzaoui
- UMR CNRS 7312, Université de Reims Champagne-Ardenne, Bât. 18, Moulin de la Housse, BP 1039 51687 Reims, Cedex 2, France
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Yerbanga RS, Lucantoni L, Lupidi G, Dori GU, Tepongning NR, Nikiéma JB, Esposito F, Habluetzel A. Antimalarial plant remedies from Burkina Faso: their potential for prophylactic use. JOURNAL OF ETHNOPHARMACOLOGY 2012; 140:255-260. [PMID: 22301449 DOI: 10.1016/j.jep.2012.01.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 11/24/2011] [Accepted: 01/11/2012] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Saye, a combination remedy prepared from Cochlospermum planchonii Hook.f. (Cochlospermaceae), Cassia alata L. (Fabaceae) and Phyllanthus amarus Schumach. et Thonn. (Euphorbiaceae), N'Dribala, a Cochlospermum planchonii root decoction, and a fruit preparation of Azadirachta indica A. Juss. (Meliaceae) are plant remedies of the folk medicine in Burkina Faso and are commonly used by traditional healers for the treatment of malaria. AIM OF THE STUDY This study aimed at validating the antiplasmodial activity of the preparations and at estimating their potential for prophylaxis, using the murine malaria system Plasmodium berghei/Anopheles stephensi. MATERIALS AND METHODS Aqueous extracts were orally administered to mice (6 animals per treatment group) at a daily dose of 200mg/kg body weight for nine days, applying protocols that mimic as much as possible traditional recipes and treatment schemes. RESULTS Saye, N'Dribala and Azadirachta indica preparations revealed prophylactic activity, reducing parasitaemia in treated mice, with respect to controls, by 52.0% (CI(95) 46.1-57.9), 45.5% (CI(95) 44.5-46.5) and 45.0% (CI(95) 41.1-48.9), respectively. No evidence of transmission blocking effects was detected with any of the tested remedies. CONCLUSIONS This study confirms, in the murine malaria system, the antiplasmodial properties of the examined remedies on the Plasmodium stages developing in the vertebrate host, thus encouraging studies aiming at identifying the active fractions and compounds responsible for the described activity and to develop standardized prophylactic remedies.
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Ezeigbo II, Asuzu IU. Anti-diabetic activities of the methanol leaf extracts of Hymenocardia acida (tul.) in alloxan-induced diabetic rats. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES 2011; 9:204-9. [PMID: 23983336 DOI: 10.4314/ajtcam.v9i2.4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The effect of methanolic extract of Hymenocardia acida leaves on diabetes and associated lipidemia were investigated on experimentally-induced diabetic rats. The extract did not demonstrate any acutely toxic effect in rats within the dose range (250 mg/kg - 2000 mg/kg) employed in the study; hence it was well tolerated by the rats. In all experiments, the anti-diabetic effects were dose-dependent and comparable to that of glibenclamide (2 mg/kg) standard. At a dose of 500 mg/kg, lipid profile markers such as the serum total cholesterol (TC) levels, LDL-C, triglycerides and HDL-C were significantly lower (p <0.05) than those of both the treated and untreated controls.
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Affiliation(s)
- Ihechiluru I Ezeigbo
- Department of Veterinary Physiology, Biochemistry and Pharmacology, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria.
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Abu A, Uchendu C, Ofukwu R. Sperm Immobilization Properties of Aqueous Ethanolic Extract of Hymenocardia Acida Stem Bark. ACTA ACUST UNITED AC 2011. [DOI: 10.3889/mjms.1857-5773.2011.0185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Akanbi OM, Omonkhua AA, Cyril-Olutayo CM, Fasimoye RY. The antiplasmodial activity of Anogeissus leiocarpus and its effect on oxidative stress and lipid profile in mice infected with Plasmodium bergheii. Parasitol Res 2011; 110:219-26. [DOI: 10.1007/s00436-011-2472-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Accepted: 05/17/2011] [Indexed: 11/28/2022]
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Caamal-Fuentes E, Torres-Tapia LW, Simá-Polanco P, Peraza-Sánchez SR, Moo-Puc R. Screening of plants used in Mayan traditional medicine to treat cancer-like symptoms. JOURNAL OF ETHNOPHARMACOLOGY 2011; 135:719-724. [PMID: 21501677 DOI: 10.1016/j.jep.2011.04.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 04/02/2011] [Accepted: 04/03/2011] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY To investigate the potential of plants used in Mayan traditional medicine to treat cancer-like symptoms using the Mayan ethnobotany literature, and evaluate their organic extracts for in vitro cytotoxic activity on cancer cell lines. MATERIALS AND METHODS The selection of the plants studied in this investigation was based on the Mayan ethnobotanical information provided by different literature sources. Extracts were obtained by maceration with methanol for 72 h of each plant part used and evaporated in vacuo to give the corresponding dried extract. Each methanol extract was tested for its cytotoxicity using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay performed in 96-well tissue plates on seven cancer cell lines, lung carcinoma (A549), cervix adenocarcinoma (HeLa), laryngeal carcinoma (Hep-2), nasopharynx carcinoma (KB), breast adenocarcinoma (MCF-7), prostate adenocarcinoma (PC-3), and cervix squamous carcinoma cells (SiHa), as well as normal human embryonic kidney cell line (HEK-293). Cell proliferation/viability was spectrophotometrically assessed at 540 nm after addition of MTT. RESULTS 51 plants were found in the literature to be used for the treatment of symptoms suggestive of cancer, 21 were chosen to evaluate the cytotoxic activity. Aeschynomene fascicularis root bark extract showed a pronounced cytotoxic activity on Hela and KB cell lines and Bonellia macrocarpa stem and root bark extracts showed similar prominent activities on KB cells. CONCLUSION 21 plants were selected according to their use in the treatment of cancer-like symptoms recorded in the ethnobotanical literature. Plant extracts prepared from Aeschynomene fascicularis root bark and Bonellia macrocarpa stem and root bark have been selected for extensive studies leading to the isolation of the active constituents.
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Affiliation(s)
- Edgar Caamal-Fuentes
- Unidad de Biotecnología, Centro de Investigación Científica de Yucatán (CICY), Calle 43 No. 130, Col. Chuburná de Hidalgo, Mérida, Yucatán 97200, Mexico
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Investigation of some medicinal plants traditionally used for treatment of malaria in Kenya as potential sources of antimalarial drugs. Exp Parasitol 2011; 127:609-26. [DOI: 10.1016/j.exppara.2010.11.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Revised: 11/01/2010] [Accepted: 11/09/2010] [Indexed: 11/23/2022]
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Adebayo JO, Krettli AU. Potential antimalarials from Nigerian plants: a review. JOURNAL OF ETHNOPHARMACOLOGY 2011; 133:289-302. [PMID: 21093570 DOI: 10.1016/j.jep.2010.11.024] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2010] [Revised: 11/08/2010] [Accepted: 11/11/2010] [Indexed: 05/26/2023]
Abstract
Malaria, caused by parasites of the genus Plasmodium, is one of the leading infectious diseases in many tropical regions, including Nigeria, a West African country where transmission occurs all year round. Many of the inhabitants use plants as remedies against fever and other symptoms of acute malaria, as reported herein. Some of these plants have their antimalarial efficacies scientifically demonstrated and the active compounds isolated with their probable mechanisms of action studied. Medicinal plants are used to treat diseases also where the biodiversity of plants occur in parallel with endemic transmission of malaria. This review focuses on medicinal plants which are used to treat malaria in Nigeria, and on antimalarial testing of extracts and purified compounds from plants. Some show intense activity against malaria parasites in vitro and in experimentally infected mice. The search for new drugs based on plants is important due to the emergence and widespread of chloroquine-resistant and multiple drug-resistant malaria parasites, which require the development of new antimalarials. An acquaintance with antimalarial plants may be a springboard for new phytotherapies that could be affordable to treat malaria, especially among the less privileged native people living in endemic areas of the tropics, mostly at risk of this devastating disease.
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Affiliation(s)
- J O Adebayo
- Laboratorio de Malaria, Centro de Pesquisas Rene Rachou, FIOCRUZ, Belo Horizonte MG, Brazil.
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