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Vahekeni N, Brillatz T, Rahmaty M, Cal M, Keller-Maerki S, Rocchetti R, Kaiser M, Sax S, Mattli K, Wolfram E, Marcourt L, Queiroz EF, Wolfender JL, Mäser P. Antiprotozoal Activity of Plants Used in the Management of Sleeping Sickness in Angola and Bioactivity-Guided Fractionation of Brasenia schreberi J.F.Gmel and Nymphaea lotus L. Active against T. b. rhodesiense. Molecules 2024; 29:1611. [PMID: 38611890 PMCID: PMC11013945 DOI: 10.3390/molecules29071611] [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: 01/15/2024] [Revised: 03/20/2024] [Accepted: 03/22/2024] [Indexed: 04/14/2024] Open
Abstract
Folk medicine is widely used in Angola, even for human African trypanosomiasis (sleeping sickness) in spite of the fact that the reference treatment is available for free. Aiming to validate herbal remedies in use, we selected nine medicinal plants and assessed their antitrypanosomal activity. A total of 122 extracts were prepared using different plant parts and solvents. A total of 15 extracts from seven different plants exhibited in vitro activity (>70% at 20 µg/mL) against Trypanosoma brucei rhodesiense bloodstream forms. The dichloromethane extract of Nymphaea lotus (leaves and leaflets) and the ethanolic extract of Brasenia schreberi (leaves) had IC50 values ≤ 10 µg/mL. These two aquatic plants are of particular interest. They are being co-applied in the form of a decoction of leaves because they are considered by local healers as male and female of the same species, the ethnotaxon "longa dia simbi". Bioassay-guided fractionation led to the identification of eight active molecules: gallic acid (IC50 0.5 µg/mL), methyl gallate (IC50 1.1 µg/mL), 2,3,4,6-tetragalloyl-glucopyranoside, ethyl gallate (IC50 0.5 µg/mL), 1,2,3,4,6-pentagalloyl-β-glucopyranoside (IC50 20 µg/mL), gossypetin-7-O-β-glucopyranoside (IC50 5.5 µg/mL), and hypolaetin-7-O-glucoside (IC50 5.7 µg/mL) in B. schreberi, and 5-[(8Z,11Z,14Z)-heptadeca-8,11,14-trienyl] resorcinol (IC50 5.3 µg/mL) not described to date in N. lotus. Five of these active constituents were detected in the traditional preparation. This work provides the first evidence for the ethnomedicinal use of these plants in the management of sleeping sickness in Angola.
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Affiliation(s)
- Nina Vahekeni
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Théo Brillatz
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Marjan Rahmaty
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Monica Cal
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Sonja Keller-Maerki
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Romina Rocchetti
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Marcel Kaiser
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Sibylle Sax
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
| | - Kevin Mattli
- Phytopharmacy & Natural Products, Institute of Chemistry and Biotechnology, Zürich University of Applied Sciences (ZHAW), 8820 Wädenswil, Switzerland (E.W.)
| | - Evelyn Wolfram
- Phytopharmacy & Natural Products, Institute of Chemistry and Biotechnology, Zürich University of Applied Sciences (ZHAW), 8820 Wädenswil, Switzerland (E.W.)
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Emerson Ferreira Queiroz
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, CMU, 1211 Geneva, Switzerland; (T.B.); (L.M.); (E.F.Q.); (J.-L.W.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU, 1211 Geneva, Switzerland
| | - Pascal Mäser
- Department of Medical Parasitology and Infection Biology, Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland; (M.C.); (S.K.-M.); (R.R.); (M.K.); (S.S.); (P.M.)
- Faculty of Science, University of Basel, 4002 Basel, Switzerland
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Shor SM, Schweig SK. The Use of Natural Bioactive Nutraceuticals in the Management of Tick-Borne Illnesses. Microorganisms 2023; 11:1759. [PMID: 37512931 PMCID: PMC10384908 DOI: 10.3390/microorganisms11071759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/29/2023] [Accepted: 06/29/2023] [Indexed: 07/30/2023] Open
Abstract
The primary objective of this paper is to provide an evidence-based update of the literature on the use of bioactive phytochemicals, nutraceuticals, and micronutrients (dietary supplements that provide health benefits beyond their nutritional value) in the management of persistent cases of Borrelia burgdorferi infection (Lyme disease) and two other tick-borne pathogens, Babesia and Bartonella species. Recent studies have advanced our understanding of the pathophysiology and mechanisms of persistent infections. These advances have increasingly enabled clinicians and patients to utilize a wider set of options to manage these frequently disabling conditions. This broader toolkit holds the promise of simultaneously improving treatment outcomes and helping to decrease our reliance on the long-term use of pharmaceutical antimicrobials and antibiotics in the treatment of tick-borne pathogens such as Borrelia burgdorferi, Babesia, and Bartonella.
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Affiliation(s)
- Samuel M Shor
- Internal Medicine of Northern Virginia, George Washington University Health Care Sciences, Reston, VA 20190, USA
| | - Sunjya K Schweig
- California Center for Functional Medicine, Oakland, CA 94619, USA
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Baumgärtel C, Lautenschläger T. The genus Landolphia P.Beauv. (Apocynaceae): A comprehensive review on its ethnobotanical utilizations, pharmacology and nutritional potential. JOURNAL OF ETHNOPHARMACOLOGY 2023; 303:115946. [PMID: 36410576 DOI: 10.1016/j.jep.2022.115946] [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: 06/27/2022] [Revised: 11/11/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The genus Landolphia is an important resource for African traditional medicine. Among the 60 different accepted species, nearly every plant part of the genus (bark, fruit, latex, leaf, leaf sap, root, rootbark, twig) from 13 species is utilized by traditional healers around Africa. Accordingly, many pharmacological studies (42) were performed on the most common species (11). AIM OF THE STUDY This comprehensive literature review summarizes all publications dealing on one of the 60 plant species from the genus Landolphia. An overview about already performed analysis is given and important aspects and knowledge gaps are highlighted for the direction of future research activities. MATERIALS AND METHODS A systematic web search taking into account the major platforms Web of Science, Scopus, PubMed, SciFinder and Google Scholar was performed for the term Landolphia. All relevant datasets, published between 1804 and 2022, were ordered according to their topics in different sections and compared to each other. A network visualization of the keywords via VOS Viewer was additionally performed. RESULTS In total, 209 publications were retrieved from the search engines, mainly written in English. Predominant are ethnopharmacological studies, which identified 292 phytochemicals in plant parts of the whole genus. Diverse biological activities were detected in different plant extracts, and five species were determined as of special interest for the treatment of malaria. Further research topics identified are botanical aspects, ethnobotanical utilizations, ecological aspects, the potential as source for human and animal nutrition, the manufacturing of rubber, economic aspects, biomechanical studies and others. L. owariensis is the most studied plant as it is abundant in continental Africa. CONCLUSIONS This review serves as a database for upcoming research on the genus Landolphia and directs existing knowledge gaps. A wide range of chemical components are already identified, but their exact content in the respective plant parts and their biological activity remains mainly unknown. Utilization patterns from traditional medicine are only partially analyzed as demonstrated for the applications as aphrodisiac, to treat skin diseases or as antidiabetic. Nutritional analyses likewise focus on several species of Landolphia and lack for the wide range of known edible fruits. The demand for new natural products in terms of medicine, rubber and nutrition is still high and the genus Landolphia seems to be a promising resource covering many aspects at once.
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Affiliation(s)
- Christin Baumgärtel
- Chair of Botany, Faculty of Biology, Faculty of Science, Technische Universität Dresden, 01062, Dresden, Germany.
| | - Thea Lautenschläger
- Chair of Botany, Faculty of Biology, Faculty of Science, Technische Universität Dresden, 01062, Dresden, Germany
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Nunes Alves Paim LF, Dos Santos PR, Patrocinio Toledo CA, Minello L, Lima da Paz JR, Castro Souza V, Salvador M, Moura S. Four almost unexplored species of Brazilian Connarus (Connaraceae): Chemical composition by ESI-QTof-MS/MS-GNPS and a pharmacologic potential. PHYTOCHEMICAL ANALYSIS : PCA 2022; 33:286-302. [PMID: 34510611 DOI: 10.1002/pca.3087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/21/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
INTRODUCTION Species of Connaraceae are globally used in traditional medicines. However, several of these have not been studied regarding their chemical composition, and some are even at risk of extinction without proper studies. Therefore, the chemical composition and pharmacological potential of Connarus blanchetii Planch., Connarus nodosus Baker, Connarus regnellii G. Schellenb., and Connarus suberosus Planch., which were previously unknown, were analyzed. OBJECTIVE This work aims to investigate the pharmacological potential of these four Connarus species. The chemical composition of different extracts was determined by high-resolution mass spectrometry (HRMS), with subsequent analysis by the GNPS platform and competitive fragmentation modeling (CFM). MATERIALS AND METHODS Leaf extracts (C. blanchetii, C. nodosus, C. regnellii, and C. suberosus) and bark extracts (C. regnellii and C. suberosus) were obtained by decoction, infusion, and maceration. LC/HRMS data were submitted to the GNPS platform and evaluated using CFM in order to confirm the structures. RESULTS The HRMS-GNPS/CFM analysis indicated the presence of 23 compounds that were mainly identified as phenolic derivatives from quercetin and myricetin, of which 21 are unedited in the Connarus genus. Thus, from the analyses performed, we can identify different compounds with pharmacological potential, as well as the most suitable forms of extraction. CONCLUSION Using HRMS-GNPS/CFM, 21 unpublished compounds were identified in the studied species. Therefore, our combination of data analysis techniques can be used to determine their chemical composition.
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Affiliation(s)
| | - Paulo Roberto Dos Santos
- Laboratory of Biotechnology of Natural and Synthetics Products, University of Caxias do Sul, Brazil
| | | | - Luana Minello
- Laboratory of Oxidative Stress and Antioxidants, Biotechnology Institute, University of Caxias do Sul, Brazil
| | | | - Vinicius Castro Souza
- Departamento de Ciências Biológicas. Escola Superior de Agricultura "Luiz de Queiroz"-ESALQ, University of São Paulo-USP, Brazil
| | - Mirian Salvador
- Laboratory of Oxidative Stress and Antioxidants, Biotechnology Institute, University of Caxias do Sul, Brazil
| | - Sidnei Moura
- Laboratory of Biotechnology of Natural and Synthetics Products, University of Caxias do Sul, Brazil
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Peeters L, Foubert K, Baldé MA, Tuenter E, Matheeussen A, Van Pelt N, Caljon G, Hermans N, Pieters L. Antiplasmodial activity of constituents and their metabolites after in vitro gastrointestinal biotransformation of a Nauclea pobeguinii extract. PHYTOCHEMISTRY 2022; 194:113029. [PMID: 34844038 DOI: 10.1016/j.phytochem.2021.113029] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/19/2021] [Accepted: 11/20/2021] [Indexed: 06/13/2023]
Abstract
Nauclea pobeguinii is traditionally used for treatment of malaria. Previous studies on the plant extract and strictosamide, the putative active constituent, showed a profound in vivo activity of the extract but no in vitro activity of strictosamide. This might indicate that one or more compounds present in the extract, most likely alkaloids, act as prodrugs undergoing biotransformation after oral administration resulting in the active compounds. The phytochemical composition of a N. pobeguinii extract was characterized using UHPLC-UV-HRMS (Ultrahigh-Performance Liquid Chromatography-Ultraviolet-High Resolution Mass Spectrometry) data. An in vitro gastrointestinal model was used to simulate biotransformation of the extract allowing monitoring of the relative abundances of individual constituents over time on one hand, while antiplasmodial activity and cytotoxicity of the biotransformed extract could be evaluated on the other hand. A diversity of compounds was (tentatively) identified in the extract, mainly saponins and alkaloids, including 32 compounds that have not been reported before in N. pobeguinii. The automated data analysis workflow used for unbiased screening for metabolites showed that glycosylated compounds decreased in intensity over time. Alkaloids containing no sugar moieties, including angustine-type alkaloids, showed no gastrointestinal biotransformation. In vitro gastrointestinal biotransformation of strictosamide did not result in a major metabolite. Moreover, multivariate data analysis using Orthogonal Partial Least Square-Discriminant Analysis (OPLS-DA) showed no in vitro activity of strictosamide or its metabolites suggesting that other compounds or metabolites present in the extract are responsible for the antiplasmodial effect of the N. pobeguinii extract. The OPLS-DA proposes alkaloids with a β-carboline moiety as active principles, suggesting that antiplasmodial activity of N. pobeguinii derives from an additive or synergistic effect of multiple minor alkaloids and their metabolites present in the bark extract of N. pobeguinii.
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Affiliation(s)
- Laura Peeters
- Natural Products & Food Research and Analysis (NatuRA), University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium.
| | - Kenn Foubert
- Natural Products & Food Research and Analysis (NatuRA), University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - Mamadou Aliou Baldé
- Natural Products & Food Research and Analysis (NatuRA), University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - Emmy Tuenter
- Natural Products & Food Research and Analysis (NatuRA), University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - An Matheeussen
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - Natascha Van Pelt
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - Guy Caljon
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - Nina Hermans
- Natural Products & Food Research and Analysis (NatuRA), University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
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Chukwudulue UM, Attah AF, Okoye FBC. Linking phytochemistry to traditional uses and pharmacology of an underexplored genus - Psydrax: a review. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2022; 21:1577-1604. [PMID: 35002582 PMCID: PMC8723915 DOI: 10.1007/s11101-021-09798-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 12/20/2021] [Indexed: 06/12/2023]
Abstract
The genus Psydrax is one of the ethno-medicinally important genera of the Rubiaceae family which has only received a limited scientific attention, despite coming from a pharmacologically and phytochemically important plant family. The genus has found applications in ethnomedical management of diabetes, stomach disorders, inflammations, cardiovascular diseases, epilepsy, wounds, malaria and fever. To unveil knowledge gaps, stimulate research interest and unravel opportunities for drug discovery from the genus Psydrax, we have carried out an extensive review on its traditional applications, phytochemistry and pharmacology for the first time. Literature on these topics was obtained from Google Scholar, Pubmed and ScienceDirect journal articles published from 1788 to September, 2021. Only articles written in English were reviewed. While several species of Pysdrax used in traditional medicine have not been chemically explored for drug discovery, over a hundred secondary metabolites have so far been identified in few species of the genus, and majority of these chemotaxonomic markers are iridoids. Bioactive extracts and some isolated constituents of Psydrax species have shown various in vitro and in vivo pharmacological properties including anti-hyperglycemia, anti-inflammatory, anticonvulsant and antimicrobial, and thus, support some of the ethnomedical uses of the plants. For an evidence-informed application of the genus, Psydrax, in traditional medicine, more ethnobotanical surveys, elaborate in vivo pharmacological assays, in-depth toxicity and holistic phytochemical studies are required to fully exploit more species of the genus prior to future clinical studies. Following documented traditional uses of Psydrax species, the deliberate cultivation of medicinal plants under this genus is recommended for sustainability in medicinal plant utilization.
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Affiliation(s)
- Uche Maryann Chukwudulue
- Department of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Chukwuemeka Odumegwu Ojukwu University, Igbariam, Anambra State Nigeria
- Department of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Nnamdi Azikiwe University, Awka, Anambra State Nigeria
| | - Alfred Francis Attah
- Department of Pharmacognosy and Drug Development, Faculty of Pharmaceutical Sciences, University of Ilorin, Ilorin, Kwara State Nigeria
| | - Festus Basden Chiedu Okoye
- Department of Pharmaceutical and Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Nnamdi Azikiwe University, Awka, Anambra State Nigeria
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Medicinal Plants with Prospective Benefits in the Management of Peptic Ulcer Diseases in Ghana. BIOMED RESEARCH INTERNATIONAL 2021; 2021:5574041. [PMID: 34036100 PMCID: PMC8118747 DOI: 10.1155/2021/5574041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/11/2021] [Accepted: 04/16/2021] [Indexed: 12/01/2022]
Abstract
Background The growth or multiplication of harmful microorganisms in addition to harmful human activities has led to many disorders in humans. Consequently, there is a search for medications to treat these disorders. Interestingly, medicines of plant origin are known to be among the most attractive sources of new drugs and have shown promising results in the treatment of various diseases including peptic ulcers. This review, therefore, is aimed at obtaining knowledge on some Ghanaian ethnomedicinal plants used to treat peptic ulcers, their folkloric uses, their phytochemicals, and their antiulcer and related pharmacological activities as well as finding areas for prospective studies. Methods Published peer-reviewed articles on ethnomedicinal plants used for the management of peptic ulcers in Ghana from 1967 to 2020 were sourced and used for the study. Results In this review, 13 plants were identified which belong to 10 different families including Sapindaceae, Apocynaceae, and Bignoniaceae. The parts most often used for most preparations were the leaves (53%), followed by stem bark and roots (both having the same percentage of use of 17.6%), the whole plant (5.9%), and the rhizomes (5.9%). Azadirachta indica was the only plant that had undergone some patient studies in addition to animal studies. Conclusion. A discussion of various antiulcer activity studies using ulcer models carried out on selected medicinal plants used for the management of peptic ulcer disease in addition to brief information on their folkloric uses and their phytochemical and other pharmacological properties is presented. These medicinal plants may be used in developing herbal products for the management of peptic ulcer disease.
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Zhang Y, Alvarez-Manzo H, Leone J, Schweig S, Zhang Y. Botanical Medicines Cryptolepis sanguinolenta, Artemisia annua, Scutellaria baicalensis, Polygonum cuspidatum, and Alchornea cordifolia Demonstrate Inhibitory Activity Against Babesia duncani. Front Cell Infect Microbiol 2021; 11:624745. [PMID: 33763384 PMCID: PMC7982592 DOI: 10.3389/fcimb.2021.624745] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Accepted: 01/08/2021] [Indexed: 12/15/2022] Open
Abstract
Human babesiosis is a CDC reportable disease in the United States and is recognized as an emerging health risk in multiple parts of the world. The current treatment for human babesiosis is suboptimal due to treatment failures and unwanted side effects. Although Babesia duncani was first described almost 30 years ago, further research is needed to elucidate its pathogenesis and clarify optimal treatment regimens. Here, we screened a panel of herbal medicines and identified Cryptolepis sanguinolenta, Artemisia annua, Scutellaria baicalensis, Alchornea cordifolia, and Polygonum cuspidatum to have good in vitro inhibitory activity against B. duncani in the hamster erythrocyte model. Furthermore, we found their potential bioactive compounds, cryptolepine, artemisinin, artesunate, artemether, and baicalein, to have good activity against B. duncani, with IC50 values of 3.4 μM, 14 μM, 7.4 μM, 7.8 μM, and 12 μM, respectively, which are comparable or lower than that of the currently used drugs quinine (10 μM) and clindamycin (37 μM). B. duncani treated with cryptolepine and quinine at their respective 1×, 2×, 4× and 8× IC50 values, and by artemether at 8× IC50 for three days could not regrow in subculture. Additionally, Cryptolepis sanguinolenta 90% ethanol extract also exhibited no regrowth after 6 days of subculture at doses of 2×, 4×, and 8× IC50 values. Our results indicate that some botanical medicines and their active constituents have potent activity against B. duncani in vitro and may be further explored for more effective treatment of babesiosis.
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Affiliation(s)
- Yumin Zhang
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Hector Alvarez-Manzo
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Jacob Leone
- FOCUS Health Group, Naturopathic, Novato, CA, United States
| | - Sunjya Schweig
- California Center for Functional Medicine, Kensington, CA, United States
| | - Ying Zhang
- State Key Laboratory for the Diagnosis and Treatment of Infectious Diseases, National Clinical Research Center for Infectious Diseases, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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Nunes Alves Paim LF, Patrocínio Toledo CA, Lima da Paz JR, Picolotto A, Ballardin G, Souza VC, Salvador M, Moura S. Connaraceae: An updated overview of research and the pharmacological potential of 39 species. JOURNAL OF ETHNOPHARMACOLOGY 2020; 261:112980. [PMID: 32422354 DOI: 10.1016/j.jep.2020.112980] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/01/2020] [Accepted: 05/12/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE An interdisciplinary scientific investigation of biologically active agents is fundamental to search for natural substances with therapeutic action. This review collected the most relevant information on traditional knowledge related to the use of plants of the Connaraceae family. This work is the first to compile all the published ethnobotanical, chemical, pharmacological, and toxicological information about this important plant family. AIM OF THE STUDY Our objective was to provide the scientific community with an up-to-date overview of the pharmacological potential of Connaraceae species. MATERIAL AND METHODS We searched NCBI Pubmed Central, Google Scholar, Scientific Electronic Library Online (SciELO), ScienceDirect, SciFinder, and Scopus databases to review the research on ethnobotanical, chemical, pharmacognostical, pharmacological, and toxicological studies with Connaraceaes. Books that address the theme were also included. DISCUSSION AND CONCLUSION The literature review indicated that 39 species of Connaraceaes have pharmacological potentiality. Ethnobotany reports listed 36 of the 39 species discussed. Pharmacognostical studies have been conducted with 23 species and isolates, and chemical compounds have been identified for only 15 species. At least one study has been published concerning the pharmacological activities for 20 of the 39 species analyzed. For Agelaea pentagyna, Cnestis ferruginea, Connars suberosus, and Rourea minor, pharmacological activity experiments were performed using isolated compounds, which have the highest current pharmacological potential. Studies employing a toxicological approach cover only 10 of the 39 Connaraceaes species. Thus, scientific community should conduct much more research for a broader understanding of this plant family.
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Affiliation(s)
| | | | | | - Aline Picolotto
- Laboratory of Biotechnology of Natural and Synthetics Products - University of Caxias do Sul, Brazil
| | - Guilherme Ballardin
- Laboratory of Biotechnology of Natural and Synthetics Products - University of Caxias do Sul, Brazil
| | - Vinicius Castro Souza
- Programa de Pós-Graduação em Biologia Vegetal, Campinas State University, UNICAMP, Brazil
| | - Mirian Salvador
- Laboratory of Oxidative Stress and Antioxidants, Biotechnology Institute, University of Caxias do Sul, Brazil
| | - Sidnei Moura
- Laboratory of Biotechnology of Natural and Synthetics Products - University of Caxias do Sul, Brazil.
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Antiplasmodial and Genotoxic Study of Selected Ghanaian Medicinal Plants. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:1582724. [PMID: 33029160 PMCID: PMC7530504 DOI: 10.1155/2020/1582724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/04/2020] [Indexed: 11/17/2022]
Abstract
Results Five out of the eight plants, A. boonei stem bark, S; siamea Lam root, M. lucida Benth leaves, P. niruri, and A. hispidum DC whole plants, showed varying degrees of antiplasmodial activity against the asexual stage of the parasite. The most active extract against chloroquine-sensitive (3D7) and chloroquine-resistant (Dd2) P. falciparum strains is the A. hispidum extract which yielded a mean inhibitory concentration at 50% (IC50) of 3.66 µg/ml and 3.71 µg/ml for 3D7 and Dd2, respectively. This was followed by S. siamea Lam with 3.95 µg/ml for 3D7 and 4.47 µg/ml for Dd2. The IC50 values of the A. boonei extract against 3D7 and Dd2 P. falciparum parasites were 5.13 µg/ml and 3.62 µg/ml, respectively. For the M. lucida Benth extract, the least IC50 value was 6.46 µg/ml. All five extracts exhibited dose-dependent antiplasmodial activity. Assessment of the genotoxic effects the A. hispidum extract by the comet assay revealed substantial damage to P. falciparum DNA. Conclusion This study demonstrates that the crude extract of A. hispidum DC, one of the plants used traditionally to treat malaria, inhibits the growth of P. falciparum in vitro and could be a potential source of antimalarial drug. The report has highlighted genotoxic and cytotoxic effects of the selected plant extracts on human leukocytes as well.
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Florencio M, Tomás Nery E, Rosa D, Auxiliadora Nascimento Ribeiro T, de Brito Braz Moraes J, Araujo Zuma A, da Silva Trindade JD, Dutra Barbosa da Rocha RF, Decote-Ricardo D, Pinto-da-Silva LH, M Motta MC, de Carvalho MG, Fampa P. The effect of the biflavonoid 2″,3″-dihydroochnaflavone on Trypanosoma cruzi Y strain. Parasitol Int 2020; 79:102180. [PMID: 32860937 DOI: 10.1016/j.parint.2020.102180] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 07/16/2020] [Accepted: 08/11/2020] [Indexed: 11/18/2022]
Abstract
Trypanosoma cruzi is the causative agent of Chagas disease which affects 8 million people in Latin America. The parasite possesses high capacity to evade host immune system and the available drugs to treat Chagas disease present low efficacy combined to serious side effects to patients. Therefore, the identification of alternative therapeutics is essential. Brazilian flora exhibits an immense diversity of metabolites with great potential to be developed into new drugs. We investigated the action of 2″,3″-dihydroochnaflavone a biflavonoid extracted from Luxemburgia nobilis Eichler ex Engl. (Ochnaceae) against T. cruzi (Y strain). Our experiments showed that this compound is effective against parasite epimastigote forms, presenting IC50 value of (2.5 ± 0.1) μM after 96 h of treatment. Ultrastructure alterations were also detected in treated epimastigotes especially mitochondrial enlargement at the kinetoplast region. At the concentration of 30 μM, the compound killed (61.6 ± 3.37)% of the parasite in its amastigote form. In addition, at the same concentration, the compound killed all trypamastigotes growing within murine macrophages after 7-9 days of infection. Nonetheless, the biflavonoid concentrations were harmless to murine enriched population of lymphocytes and peritoneal macrophages. These results indicate that 2″,3″- dihydroochnaflavone presents activity against T. cruzi.
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Affiliation(s)
- Melissa Florencio
- Departamento de Ciências Farmacêuticas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil; Programa de Pós-graduação em Ciências Veterinárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil
| | - Eveliny Tomás Nery
- Departamento de Ciências Farmacêuticas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil; Faculty of Health and Medical Sciences, University of Surrey - Stag Hill Campus, GU2 7TE Guildford, UK
| | - Dayana Rosa
- Departamento de Ciências Farmacêuticas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil; Programa de Pós-graduação em Ciências Veterinárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil
| | - Tereza Auxiliadora Nascimento Ribeiro
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil; Departamento de Química, Instituto de Ciências Exatas e da Terra, Universidade Federal de Mato Grosso, Cuiabá, MT 78060-900, Brazil
| | - Julliane de Brito Braz Moraes
- Departamento de Microbiologia e Imunologia Veterinária, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil
| | - Aline Araujo Zuma
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, CEP 21941-540 Rio de Janeiro, RJ, Brazil
| | - Joana D'Arc da Silva Trindade
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil
| | - Raphael Francisco Dutra Barbosa da Rocha
- Programa de Pós-graduação em Ciências Veterinárias, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil; Departamento de Microbiologia e Imunologia Veterinária, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil
| | - Debora Decote-Ricardo
- Departamento de Microbiologia e Imunologia Veterinária, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil
| | - Lucia Helena Pinto-da-Silva
- Departamento de Microbiologia e Imunologia Veterinária, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil
| | - Maria Cristina M Motta
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, CEP 21941-540 Rio de Janeiro, RJ, Brazil
| | - Mario Geraldo de Carvalho
- Departamento de Química Orgânica, Instituto de Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil
| | - Patrícia Fampa
- Departamento de Ciências Farmacêuticas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23.890-000, Brazil.
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Vahekeni N, Neto PM, Kayimbo MK, Mäser P, Josenando T, da Costa E, Falquet J, van Eeuwijk P. Use of herbal remedies in the management of sleeping sickness in four northern provinces of Angola. JOURNAL OF ETHNOPHARMACOLOGY 2020; 256:112382. [PMID: 31743767 DOI: 10.1016/j.jep.2019.112382] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 11/02/2019] [Accepted: 11/10/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE This study reports for the first time on the use of folk medicine to treat sleeping sickness and its symptoms in four endemic provinces in northern Angola. By interviewing both traditional practitioners and confirmed patients, it highlights reasons to recourse to folk medicine, the plant species used for this affection as well as arises awareness about the use of particular plants showing potential risks. AIM OF THE STUDY The aims of this explorative study were three-fold. Firstly, it informed on access to, and use of plant-based medicine as first-choice treatment by infected persons. Secondly, it aimed at collecting comprehensive data from patients and traditional healers on herbal remedies in order to identify plant species used in the management of the disease. Thirdly, it served as contribution for primary indication of potential risk of use associated with the studied plants and their preparation. MATERIALS AND METHODS The study was conducted in 4 endemic provinces of Angola, namely Bengo, Zaire, Kwanza Norte and Uíge. We explored the use of herbal remedies by conducting structured and semi-structured interviews within two distinct study populations. The first group comprises 30 patients who had been diagnosed for trypanosomiasis and treated by the reference treatment. The second group included 9 traditional practitioners who had already treated sleeping sickness. The plants that were cited during the interviews were collected during field walks under supervision of a traditional healer, then authenticated and deposited at the National Herbarium in Luanda. RESULTS Of the 30 included patients, 12 (40%) had turned to folk medicine in the management of trypanosomiasis and related symptoms. 7 medicinal plants were reported by this group. Considering the key motivation to consult a traditional practitioner, two main factors accounted for half of the cases: "past experience with folk medicine" and "family habit". Out of 9 traditional practitioners' interviewees, 26 medicinal plants were cited. Roots and leaves were the most used plant parts, and decoction was the common mode of preparation. Evidence for antitrypanosomal activity in the scientific literature was found for 56% (17 of 30) of the identified plant species. The most cited plant was Crossopteryx febrifuga (UR = 6). Some of the cited plants, as for example Aristolochia gigantea, raised concern about potential toxicity. CONCLUSIONS With 40% of infected persons having turned first to folk medicine before consulting a medical doctor, this explorative study points out that plant-based medicines play an important role in local dynamics of health care. It highlights the need for primary assessment of potential risk of use related to the herbal recipes, and for reporting it to the concerned population. This first ethnobotanical study on trypanosomiasis in endemic provinces of Angola provides information on 30 plants, of which some had been identified as promising for further pharmacological research. Our results provide a first step towards the validation and valorization of Angolan herbal remedies for sleeping sickness.
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Affiliation(s)
- Nina Vahekeni
- Swiss Tropical and Public Health Institute (Swiss TPH), Socinstr. 53, 4051, Basel, Switzerland; University of Basel, Petersplatz 1, 4001, Basel, Switzerland; Nacional Center of Scientific Investigation (CNIC), Luanda, Angola.
| | - Pedro Menezes Neto
- Centro de Estudos e Investigação Científica de Botânica, Universidade Agostinho Neto, Luanda, Angola.
| | | | - Pascal Mäser
- Swiss Tropical and Public Health Institute (Swiss TPH), Socinstr. 53, 4051, Basel, Switzerland; University of Basel, Petersplatz 1, 4001, Basel, Switzerland.
| | - Théophile Josenando
- Instituto de Combate e Controlo das Tripanossomíasses (ICCT), Luanda, Angola.
| | - Esperança da Costa
- Centro de Estudos e Investigação Científica de Botânica, Universidade Agostinho Neto, Luanda, Angola.
| | | | - Peter van Eeuwijk
- Swiss Tropical and Public Health Institute (Swiss TPH), Socinstr. 53, 4051, Basel, Switzerland; University of Basel, Petersplatz 1, 4001, Basel, Switzerland; Institute of Social Anthropology, University of Basel, Münsterplatz 19, 4051, Basel, Switzerland.
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Manya MH, Keymeulen F, Ngezahayo J, Bakari AS, Kalonda ME, Kahumba BJ, Duez P, Stévigny C, Lumbu SJB. Antimalarial herbal remedies of Bukavu and Uvira areas in DR Congo: An ethnobotanical survey. JOURNAL OF ETHNOPHARMACOLOGY 2020; 249:112422. [PMID: 31765762 DOI: 10.1016/j.jep.2019.112422] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 11/20/2019] [Accepted: 11/20/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The main objective of the present study was to collect and gather information on herbal remedies traditionally used for the treatment of malaria in Bukavu and Uvira, two towns of the South Kivu province in DRC. MATERIAL AND METHODS Direct interview with field enquiries allowed collecting ethnobotanical data; for each plant, a specimen was harvested in the presence of the interviewed traditional healers (THs). The recorded information included vernacular names, morphological parts of plants, methods of preparation and administration of remedies, dosage and treatment duration. Plants were identified with the help of botanists in the herbaria of INERA/KIPOPO (DRC) and the Botanic Garden of Meise (Belgium), where voucher specimens have been deposited. The results were analysed and discussed in the context of previous published data. RESULTS Interviewees cited 45 plant species belonging to 41 genera and 21 families used for the treatment of malaria. These plants are used in the preparation of 52 recipes, including 25 multi-herbal recipes and 27 mono-herbal recipes. Apart of Artemisia annua L. (Asteraceae; % Citation frequency = 34%) and Carica papaya L. (Caricaceae; % Citation frequency = 34%), the study has highlighted that the most represented families are Asteraceae with 12 species (26%), followed by Fabaceae with 7 species (16%) and Rubiaceae with 4 species (9%). For a majority of plants, herbal medicines are prepared from the leaves in the form of decoction and administered by oral route. CONCLUSION Literature data indicate that part of cited species are already known (38%) and/or studied (30%) for antimalarial properties, which gives credit to the experience of Bukavu and Uvira interviewees and some level of confidence on collected information. The highly cited plants should be investigated in details for the isolation and identification of active ingredients, a contribution to the discovery of new possibly effective antimalarials.
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Affiliation(s)
- Mboni Henry Manya
- Laboratoire de Pharmacognosie, Faculté des Sciences Pharmaceutiques, Université de Lubumbashi, BP. 1825, Lubumbashi, Congo; Service de Chimie Organique, Département de Chimie, Faculté des Sciences, Université de Lubumbashi, BP. 1825, Lubumbashi, Congo; Unité de Pharmacognosie, Bioanalyse et Médicaments, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Campus de la Plaine - CP205/9, Boulevard du Triomphe, B-1050, Bruxelles, Belgium.
| | - Flore Keymeulen
- Unité de Pharmacognosie, Bioanalyse et Médicaments, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Campus de la Plaine - CP205/9, Boulevard du Triomphe, B-1050, Bruxelles, Belgium
| | - Jérémie Ngezahayo
- Unité de Pharmacognosie, Bioanalyse et Médicaments, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Campus de la Plaine - CP205/9, Boulevard du Triomphe, B-1050, Bruxelles, Belgium
| | - Amuri Salvius Bakari
- Laboratoire de Pharmacognosie, Faculté des Sciences Pharmaceutiques, Université de Lubumbashi, BP. 1825, Lubumbashi, Congo
| | - Mutombo Emery Kalonda
- Service de Chimie Organique, Département de Chimie, Faculté des Sciences, Université de Lubumbashi, BP. 1825, Lubumbashi, Congo
| | - Byanga Joh Kahumba
- Laboratoire de Pharmacognosie, Faculté des Sciences Pharmaceutiques, Université de Lubumbashi, BP. 1825, Lubumbashi, Congo
| | - Pierre Duez
- Service de Chimie Thérapeutique et de Pharmacognosie, Université de Mons (UMONS), 20 Place du Parc, 7000, Mons, Belgium
| | - Caroline Stévigny
- Unité de Pharmacognosie, Bioanalyse et Médicaments, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Campus de la Plaine - CP205/9, Boulevard du Triomphe, B-1050, Bruxelles, Belgium
| | - Simbi Jean-Baptiste Lumbu
- Service de Chimie Organique, Département de Chimie, Faculté des Sciences, Université de Lubumbashi, BP. 1825, Lubumbashi, Congo
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Moyo SM, Serem JC, Bester MJ, Mavumengwana V, Kayitesi E. African Green Leafy Vegetables Health Benefits Beyond Nutrition. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1717519] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- S. M. Moyo
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Johannesburg, South Africa
| | - J. C. Serem
- Department of Anatomy, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - M. J. Bester
- Department of Anatomy, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
| | - V. Mavumengwana
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research/South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Stellenbosch, South Africa
| | - E. Kayitesi
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Johannesburg, South Africa
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Cimanga RK, Nsaka SL, Tshodi ME, Mbamu BM, Kikweta CM, Makila FBM, Cos P, Maes L, Vlietinck AJ, Exarchou V, Tuenter E, Pieters L. In vitro and in vivo antiplasmodial activity of extracts and isolated constituents of Alstonia congensis root bark. JOURNAL OF ETHNOPHARMACOLOGY 2019; 242:111736. [PMID: 30763695 DOI: 10.1016/j.jep.2019.02.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/29/2019] [Accepted: 02/10/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE An aqueous decoction of root bark of Alstonia congensis Engl. (Apocynaceae) is used in several African countries to treat various ailments including malaria. MATERIALS AND METHODS Extracts of different polarity and isolated constituents were tested in vitro for their antiplasmodial activity against the chloroquine-resistant strain Plasmodium falciparum K1 and the chloroquine-sensitive strain P. falciparum NF54A19A, as well as for their cytotoxic effects againt MRC-5 cells (human lung fibroblasts). Extracts and fractions were evaluated in vivo against the chloroquine-resistant strain P. yoelii N67 and the chloroquine-sensitive strain P. berghei berghei ANKA. RESULTS The aqueous extract, the 80% methanol extract and the alkaloid-enriched extract exhibited strong antiplasmodial activity against P. falciparum K1 with IC50 values < 10 µg/ml and against P. falciparum NF54 A19A with IC50 values < 0.02 µg/ml. In vivo against P. yoelii N67, at the highest oral dose of 400 mg/kg body weight, all extracts produced 70-73% chemosuppression, while against P. berghei berghei, more than 75% chemosuppression was observed. With regard to the isolated constituents, boonein was inactive in vitro against P. falciparum K-1 (IC50 > 64 µM), while echitamine, 6,7-seco-angustilobine B and β-amyrin exhibited moderate activity (IC50 < 30 µM). Against P. falciparum NF54 A19A, boonein was inactive (IC50 > 64 µM), while echitamine, 6,7-secoangustilobine and β-amyrin showed moderate IC50 values of 11.07, 21.26 and 40.70 µM, respectively. CONCLUSION These results demonstrated that all extracts from A. congensis root bark possessed antiplasmodial activity in vitro and in vivo. They can be used as raw materials for the preparation of ameliorated remedies for the treatment of uncomplicated malaria. The observed antiplasmodial activity may be due in part to the presence of indole alkaloids.
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Affiliation(s)
- R Kanyanga Cimanga
- Department of Medicinal Chemistry and Pharmacognosy, Laboratory of Pharmacognosy and Phytochemistry, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo; Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium.
| | - S Lumpu Nsaka
- Department of Medicinal Chemistry and Pharmacognosy, Laboratory of Pharmacognosy and Phytochemistry, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo
| | - M Ehata Tshodi
- Department of Medicinal Chemistry and Pharmacognosy, Laboratory of Pharmacognosy and Phytochemistry, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo
| | - B Maya Mbamu
- Department of Medicinal Chemistry and Pharmacognosy, Laboratory of Pharmacognosy and Phytochemistry, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo
| | - C Munduku Kikweta
- Department of Medicinal Chemistry and Pharmacognosy, Laboratory of Pharmacognosy and Phytochemistry, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo
| | - F Bool-Miting Makila
- Departement of Pharmacology and Pharmacovigilance, Faculty of Pharmaceutical Sciences, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Arnold J Vlietinck
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Vassiliki Exarchou
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Emmy Tuenter
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
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Exploring Antimalarial Herbal Plants across Communities in Uganda Based on Electronic Data. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:3057180. [PMID: 31636682 PMCID: PMC6766105 DOI: 10.1155/2019/3057180] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 08/14/2019] [Indexed: 12/14/2022]
Abstract
Malaria is one of the most rampant diseases today not only in Uganda but also throughout Africa. Hence, it needs very close attention as it can be severe, causing many deaths, especially due to the rising prevalence of pathogenic resistance to current antimalarial drugs. The majority of the Ugandan population relies on traditional herbal medicines for various health issues. Thus, herein, we review various plant resources used to treat malaria across communities in Uganda so as to provide comprehensive and valuable ethnobotanical data about these plants. Approximately 182 plant species from 63 different plant families are used for malaria treatment across several communities in Uganda, of which 112 plant species have been investigated for antimalarial activities and 96% of the plant species showing positive results. Some plants showed very strong antimalarial activities and could be investigated further for the identification and validation of potentially therapeutic antimalarial compounds. There is no record of an investigation of antimalarial activity for approximately 39% of the plant species used for malaria treatment, yet these plants could be potential sources for potent antimalarial remedies. Thus, the review provides guidance for areas of further research on potential plant resources that could be sources of compounds with therapeutic properties for the treatment of malaria. Some of the plants were investigated for antimalarial activities, and their efficacy, toxicity, and safety aspects still need to be studied.
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Zarev Y, Foubert K, Cos P, Maes L, Elgorashi E, Apers S, Ionkova I, Pieters L. HPLC-DAD-SPE-NMR isolation of tetracyclic spiro-alkaloids with antiplasmodial activity from the seeds of Erythrina latissima. Nat Prod Res 2019; 34:1037-1040. [PMID: 30602319 DOI: 10.1080/14786419.2018.1539976] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Seven tetracyclic spiro-alkaloids, i.e. glucoerysodine (1), erysodine (2), epi-erythratidine (3), erysovine (4), erythratidine (5), erysotrine (6) and erythraline (7) were isolated from the seeds of Erythrina latissima by means of conventional separation methods and HPLC-DAD-SPE-NMR. Their structures were elucidated by spectroscopic means. This is the first report on the isolation of compounds 3, 5 and 6 from this plant. Antiplasmodial activity against the chloroquine-resistant strain Plasmodium falciparum K1 and cytotoxicity against MRC-5 cells (human fetal lung fibroblast cells) was assessed in vitro. Erysodine (2) and erysovine (4) showed moderate activity (IC50 6.53 µM and 4.05 µM, respectively), compared with the standard chloroquine (IC50 = 0.14 µM). No cytotoxicity was observed in a concentration up to 64.0 µM.
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Affiliation(s)
- Yancho Zarev
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium.,Department of Pharmacognosy, Faculty of Pharmacy, Medical University-Sofia, Sofia, Bulgaria
| | - Kenn Foubert
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
| | - Paul Cos
- Laboratory for Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Antwerp, Belgium
| | - Louis Maes
- Laboratory for Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Antwerp, Belgium
| | - Esameldin Elgorashi
- Toxicology and Ethnoveterinary Medicine; Food, Feed and Veterinary Public Health, ARC-Onderstepoort Veterinary Institute, Onderstepoort, South-Africa
| | - Sandra Apers
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
| | - Iliana Ionkova
- Department of Pharmacognosy, Faculty of Pharmacy, Medical University-Sofia, Sofia, Bulgaria
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Antwerp, Belgium
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Saeed F, Afzaal M, Niaz B, Arshad MU, Tufail T, Hussain MB, Javed A. Bitter melon (Momordica charantia): a natural healthy vegetable. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2018. [DOI: 10.1080/10942912.2018.1446023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Farhan Saeed
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Afzaal
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Bushra Niaz
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Umair Arshad
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Tabussam Tufail
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Bilal Hussain
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ahsan Javed
- Institute of Home and Food Sciences, Government College University Faisalabad, Faisalabad, Pakistan
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Ohashi M, Amoa-Bosompem M, Kwofie KD, Agyapong J, Adegle R, Sakyiamah MM, Ayertey F, Owusu KBA, Tuffour I, Atchoglo P, Tung NH, Uto T, Aboagye F, Appiah AA, Appiah-Opong R, Nyarko AK, Anyan WK, Ayi I, Boakye DA, Koram KA, Edoh D, Yamaoka S, Shoyama Y, Ohta N. In vitro antiprotozoan activity and mechanisms of action of selected Ghanaian medicinal plants against Trypanosoma, Leishmania, and Plasmodium parasites. Phytother Res 2018; 32:1617-1630. [PMID: 29733118 DOI: 10.1002/ptr.6093] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Revised: 01/11/2018] [Accepted: 03/24/2018] [Indexed: 11/06/2022]
Abstract
Trypanosomiasis, leishmaniasis, and malaria are protozoan infections of public health importance with thousands of new cases recorded annually. Control of these infection(s) with existing chemotherapy is limited by drug toxicity, lengthy parenteral treatment, affordability, and/or the emergence of resistant strains. Medicinal plants on the other hand are used in the treatment of various infectious diseases although their chemical properties are not fully evaluated. In this study, we screened 112 crude extracts from 72 selected Ghanaian medicinal plants for anti-Trypanosoma, anti-Leishmania, and anti-Plasmodium activities in vitro and investigated their mechanisms of action. Twenty-three extracts from 20 plants showed significant antiprotozoan activity against at least 1 of 3 protozoan parasites screened with IC50 values less than 20 μg/ml. Eleven extracts showed high anti-Trypanosoma activity with Bidens pilosa whole plant and Morinda lucida leaf extracts recording the highest activities. Their IC50 (selectivity index [SI]) values were 5.51 μg/ml (35.00) and 5.96 μg/ml (13.09), respectively. Nine extracts had high anti-Leishmania activity with Annona senegalensis and Cassia alata leaf extracts as the most active. Their IC50 (SI) values were 10.8 μg/ml (1.50) and 10.1 μg/ml (0.37), respectively. Six extracts had high anti-Plasmodium activity with the leaf and stem-bark extracts of Terminalia ivorensis recording the highest activity. Their IC50 (SI) values were 7.26 μg/ml (129.36) and 17.45 μg/ml (17.17), respectively. Only M. lucida at 25 μg/ml induced significant apoptosis-like cell death in Trypanosoma parasites. Anti-Leishmania active extracts induced varying morphological changes in Leishmania parasites such as multiple nuclei and/or kinetoplast, incomplete flagella division, or nuclear fragmentation. Active extracts may be potential sources for developing new chemotherapy against these infections.
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Affiliation(s)
- Mitsuko Ohashi
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana.,Section of Environmental Parasitology, Faculty of Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Michael Amoa-Bosompem
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana.,Section of Environmental Parasitology, Faculty of Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Kofi Dadzie Kwofie
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana.,Section of Environmental Parasitology, Faculty of Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Jefferey Agyapong
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Richard Adegle
- Centre for Plant Medicine Research, P.O. Box 73, Mampong, Akuapem, Ghana
| | - Maxwell Mamfe Sakyiamah
- Section of Environmental Parasitology, Faculty of Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan.,Centre for Plant Medicine Research, P.O. Box 73, Mampong, Akuapem, Ghana
| | - Frederick Ayertey
- Centre for Plant Medicine Research, P.O. Box 73, Mampong, Akuapem, Ghana
| | - Kofi Baffuor-Awuah Owusu
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Isaac Tuffour
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Philip Atchoglo
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Nguyen Huu Tung
- Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, Nagasaki, 859-3298, Japan
| | - Takuhiro Uto
- Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, Nagasaki, 859-3298, Japan
| | - Frederick Aboagye
- Centre for Plant Medicine Research, P.O. Box 73, Mampong, Akuapem, Ghana
| | | | - Regina Appiah-Opong
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Alexander K Nyarko
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - William Kofi Anyan
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Irene Ayi
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Daniel Adjei Boakye
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Kwadwo Ansah Koram
- Noguchi Memorial Institute for Medical Research, College of Health Sciences, University of Ghana, P.O. Box LG 581, Legon, Ghana
| | - Dominic Edoh
- Centre for Plant Medicine Research, P.O. Box 73, Mampong, Akuapem, Ghana
| | - Shoji Yamaoka
- Section of Environmental Parasitology, Faculty of Medicine, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8510, Japan
| | - Yukihiro Shoyama
- Faculty of Pharmaceutical Sciences, Nagasaki International University, 2825-7 Huis Ten Bosch, Sasebo, Nagasaki, 859-3298, Japan
| | - Nobuo Ohta
- Centre for Plant Medicine Research, P.O. Box 73, Mampong, Akuapem, Ghana
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Tiam ER, Ngono Bikobo DS, Abouem A Zintchem A, Mbabi Nyemeck N, Moni Ndedi EDF, Betote Diboué PH, Nyegue MA, Atchadé ADT, Emmanuel Pegnyemb D, Bochet CG, Koert U. Secondary metabolites from Triclisia gilletii (De Wild) Staner (Menispermaceae) with antimycobacterial activity against Mycobacterium tuberculosis. Nat Prod Res 2017; 33:642-650. [DOI: 10.1080/14786419.2017.1402324] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Eric Robert Tiam
- Faculty of Science, Department of Organic Chemistry, University of Yaoundé I, Yaoundé, Cameroon
| | - Dominique Serge Ngono Bikobo
- Faculty of Science, Department of Organic Chemistry, University of Yaoundé I, Yaoundé, Cameroon
- Department Chemie, Universität Fribourg, Fribourg, Switzerland
| | - Auguste Abouem A Zintchem
- Faculty of Science, Department of Organic Chemistry, University of Yaoundé I, Yaoundé, Cameroon
- Department of Chemistry, Higher Training College, University of Yaoundé I, Yaoundé, Cameroon
| | - Norbert Mbabi Nyemeck
- Faculty of Science, Department of Organic Chemistry, University of Yaoundé I, Yaoundé, Cameroon
- Faculty of Chemistry, Philipps-Universität Marburg, Marburg, Germany
| | | | | | | | | | | | | | - Ulrich Koert
- Faculty of Chemistry, Philipps-Universität Marburg, Marburg, Germany
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Voukeng IK, Beng VP, Kuete V. Multidrug resistant bacteria are sensitive to Euphorbia prostrata and six others Cameroonian medicinal plants extracts. BMC Res Notes 2017; 10:321. [PMID: 28743314 PMCID: PMC5526298 DOI: 10.1186/s13104-017-2665-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 07/21/2017] [Indexed: 01/04/2023] Open
Abstract
Background Multidrug resistant (MDR) bacteria are responsible for therapeutic failure and there is an urgent need for novels compounds efficient on them. Methods Eleven methanol extracts from seven Cameroonian medicinal plants were tested for their antibacterial activity using broth micro-dilution method against 36 MDR bacterial strains including Escherichia coli, Enterobacter aerogenes, Enterobacter cloacae, Klebsiella pneumoniae, Providencia stuartii, Pseudomonas aeruginosa and Staphylococcus aureus. Results Euphorbia prostrata extract was found active against all the 36 tested bacteria including Gram-negative phenotypes over-expressing efflux pumps such as P. aeruginosa PA124, E. aerogenes CM64 and E. coli AG102. E. prostrata had minimal inhibitory concentrations values between 128 and 256 µg/mL on 55.55% of the studied microorganisms. Other plants extract displayed selective antibacterial activity. Conclusions Results obtained in this study highlight the antibacterial potential of the tested plants and the possible use of E. prostrata to combat bacterial infections including MDR phenotypes.
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Affiliation(s)
- Igor K Voukeng
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Veronique P Beng
- Department of Biochemistry, Faculty of Science, University of Yaounde I, Yaounde, Cameroon
| | - Victor Kuete
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon.
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22
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Amin A, Tuenter E, Foubert K, Iqbal J, Cos P, Maes L, Exarchou V, Apers S, Pieters L. In Vitro and In Silico Antidiabetic and Antimicrobial Evaluation of Constituents from Kickxia ramosissima ( Nanorrhinum ramosissimum). Front Pharmacol 2017; 8:232. [PMID: 28507520 PMCID: PMC5410595 DOI: 10.3389/fphar.2017.00232] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/12/2017] [Indexed: 01/30/2023] Open
Abstract
Background and Aims:Kickxia ramosissima (Wall.) Janch (or Nanorrhinum ramosissimum (Wall.) Betsche is a well-known medicinal plant in Pakistan that is traditionally used in diabetic and inflammatory conditions. Because little information is available on its phytochemical composition, a range of constituents were isolated and evaluated in vitro in assays related to the traditional use. Methods: Dried whole plant material was extracted and chromatographically fractionated. Isolated constituents were evaluated in silico and in vitro in assays related to the traditional use against diabetes (inhibition of α-glucosidase activity; inhibition of advanced glycation endproducts) and in inflammatory conditions (inhibition of AAPH induced linoleic acid peroxidation, inhibition of 15-LOX, antimicrobial activity). Results: Phytochemical analysis of the extracts and fractions led to isolation of 7 compounds, including the iridoids kickxiasine (being a new compound), mussaenosidic acid, mussaenoside and linarioside; the flavonoids pectolinarigenin and pectolinarin; and 4-hydroxy-benzoic acid methyl ester. The iridoids showed weak antiglycation activity. The flavonoids, however, showed interesting results as pectolinarigenin was highly active compared to pectolinarin. In the α-glucosidase inhibition assay, only weak activity was observed for the iridoids. However, the flavonoid pectolinarigenin showed good activity, followed by pectolinarin. In the 15-LOX experiment, moderate inhibition was recorded for most compounds, the iridoids mussaenosidic acid and mussaenoside being the most active. In the AAPH assay, weak or no inhibition was recorded for all compounds. The in silico assays for the α-glucosidase and 15-LOX assays confirmed the results of respective in vitro assays. Pectolinarigenin showed moderate antimicrobial activity against Staphylococcus aureus, Plasmodium falciparum K1, and Trypanosoma cruzi, but it was not cytotoxic on a human MRC-5 cell line. Conclusion: Our findings may in part contribute to explain the traditional use of K. ramosissima.
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Affiliation(s)
- Adnan Amin
- Laboratory of Natural Products and Food Research and Analysis, Department of Pharmaceutical Sciences, University of AntwerpAntwerp, Belgium
| | - Emmy Tuenter
- Laboratory of Natural Products and Food Research and Analysis, Department of Pharmaceutical Sciences, University of AntwerpAntwerp, Belgium
| | - Kenn Foubert
- Laboratory of Natural Products and Food Research and Analysis, Department of Pharmaceutical Sciences, University of AntwerpAntwerp, Belgium
| | - Jamhsed Iqbal
- Centre for Advanced Drug Research, COMSATS Institute of Information TechnologyAbbottabad, Pakistan
| | - Paul Cos
- Laboratory of Microbiology, Parasitology and Hygiene, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of AntwerpAntwerp, Belgium
| | - Louis Maes
- Laboratory of Microbiology, Parasitology and Hygiene, Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of AntwerpAntwerp, Belgium
| | - Vassiliki Exarchou
- Laboratory of Natural Products and Food Research and Analysis, Department of Pharmaceutical Sciences, University of AntwerpAntwerp, Belgium
| | - Sandra Apers
- Laboratory of Natural Products and Food Research and Analysis, Department of Pharmaceutical Sciences, University of AntwerpAntwerp, Belgium
| | - Luc Pieters
- Laboratory of Natural Products and Food Research and Analysis, Department of Pharmaceutical Sciences, University of AntwerpAntwerp, Belgium
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Muganza DM, Fruth B, Nzunzu JL, Tuenter E, Foubert K, Cos P, Maes L, Kanyanga RC, Exarchou V, Apers S, Pieters L. In vitro antiprotozoal activity and cytotoxicity of extracts and isolated constituents from Greenwayodendron suaveolens. JOURNAL OF ETHNOPHARMACOLOGY 2016; 193:510-516. [PMID: 27693770 DOI: 10.1016/j.jep.2016.09.051] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 09/27/2016] [Accepted: 09/28/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Nkundo people (Nkundo area of Bolongo, Mai-Ndombe district, Bandundu Province, DR Congo) use various plant parts of the tree Greenwayodendron suaveolens (Engl. & Diels) Verdc. (syn. Polyalthia suaveolens Engl. & Diels) (Annonaceae) against malaria, but its antiprotozoal constituents are not known. MATERIALS AND METHODS The crude 80% ethanol extract from the fruits, leaves, root bark and stem bark and 16 fractions were assessed in vitro for their antiprotozoal activity against Trypanosoma brucei brucei, T. cruzi, Leishmania infantum and the chloroquine and pyrimethamine-resistant K1 strain of Plasmodium falciparum (Pf-K1). Their cytotoxic effects were evaluated against MRC-5 cells. Active constituents were isolated by chromatographic means, identified using spectroscopic methods, and evaluated in the same assays. RESULTS The root bark extract showed the highest activity against P. falciparum K1 (IC50 0.26µg/mL) along with the stem bark alkaloid fraction (IC50 0.27µg/mL). The root bark alkaloid fraction had a pronounced activity against all selected protozoa with IC50 values <1µg/mL. The 90% methanol fractions of the different plant parts showed a pronounced activity against P. falciparum K1, with IC50 values ranging between 0.36µg/mL and 0.69µg/mL. Four constituents were isolated: the triterpenes polycarpol, and dihydropolycarpol, the latter one being reported for the first time from nature, and the alkaloids polyalthenol and N-acetyl-polyveoline. They were active to a various degree against one or more protozoa, mostly accompanied by cytotoxicity. The highest selectivity was observed for N-acetyl-polyveoline against P. falciparum K1 (IC50 2.8µM, selectivity index 10.9). CONCLUSIONS These results may explain at least in part the traditional use of this plant species against parasitic diseases such as malaria in DR Congo.
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Affiliation(s)
- D Musuyu Muganza
- Faculty of Pharmaceutical Sciences, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo.
| | - B Fruth
- Ludwig Maximilian University of Munich, Faculty of Biology/ Department Biology II, Großhaderner Straße 2, D-82152 Planegg-Martinsried, Germany; Centre for Research and Conservation / KMDA, Koningin Astridplein 20-26, B-2018 Antwerp, Belgium
| | - J Lami Nzunzu
- Faculty of Pharmaceutical Sciences, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo
| | - E Tuenter
- Natural Products & Food Resarch and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - K Foubert
- Natural Products & Food Resarch and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - P Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - L Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - R Cimanga Kanyanga
- Faculty of Pharmaceutical Sciences, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo; Natural Products & Food Resarch and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - V Exarchou
- Natural Products & Food Resarch and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - S Apers
- Natural Products & Food Resarch and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - L Pieters
- Natural Products & Food Resarch and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610 Antwerp, Belgium
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Tuenter E, Ahmad R, Foubert K, Amin A, Orfanoudaki M, Cos P, Maes L, Apers S, Pieters L, Exarchou V. Isolation and Structure Elucidation by LC-DAD-MS and LC-DAD-SPE-NMR of Cyclopeptide Alkaloids from the Roots of Ziziphus oxyphylla and Evaluation of Their Antiplasmodial Activity. JOURNAL OF NATURAL PRODUCTS 2016; 79:2865-2872. [PMID: 27933893 DOI: 10.1021/acs.jnatprod.6b00633] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nine cyclopeptide alkaloids (1-9), of which five (compounds 2, 3, 5, 8, and 9) are described herein for the first time, were isolated from roots of Ziziphus oxyphylla by means of conventional separation methods as well as semipreparative HPLC with DAD and ESIMS detection and LC-DAD-SPE-NMR. Structure elucidation was done by spectroscopic means. Nummularine-R (1), a previously known constituent from this species, was isolated along with its new derivatives O-desmethylnummularine-R (2) and O-desmethylnummularine-R N-oxide (3). In addition, the known compounds hemsine-A (4) and ramosine-A (6), as well as hemsine-A N-oxide (5), were isolated. Moreover, oxyphylline-C (7), a known constituent of Z. oxyphylla stems, was obtained, and two new compounds were identified, oxyphyllines-E (8) and -F (9). Just like oxyphylline-C, oxyphyllines-E and -F belong to the relatively rare class of neutral cyclopeptide alkaloids. The antiplasmodial activity and cytotoxicity of compounds 1, 2, 4, 6, and 9 were evaluated, and the most promising activity was found for O-desmethylnummularine-R (2), which exhibited an IC50 value of 3.2 ± 2.6 μM against Plasmodium falciparum K1, whereas an IC50 value of >64.0 μM was evident for its cytotoxicity against MRC-5 cells.
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Affiliation(s)
- Emmy Tuenter
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Rizwan Ahmad
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Kenn Foubert
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Adnan Amin
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Maria Orfanoudaki
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Paul Cos
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Louis Maes
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Sandra Apers
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Vassiliki Exarchou
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, and ‡Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp , Universiteitsplein 1, 2610 Antwerp, Belgium
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Kuete V, Dzotam JK, Voukeng IK, Fankam AG, Efferth T. Cytotoxicity of methanol extracts of Annona muricata, Passiflora edulis and nine other Cameroonian medicinal plants towards multi-factorial drug-resistant cancer cell lines. SPRINGERPLUS 2016; 5:1666. [PMID: 27730025 PMCID: PMC5039145 DOI: 10.1186/s40064-016-3361-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 09/22/2016] [Indexed: 01/07/2023]
Abstract
BACKGROUND Cancer cells rapidly acquire resistance leading to treatment failures. In the present study, we have evaluated the cytotoxicity of 17 methanol extracts from 11 Cameroonian medicinal plants against the sensitive leukemia CCRF-CEM cells and the best ones were further tested on a panel of 8 other human cancer cell lines, including various MDR phenotypes as well as against the normal AML12 hepatocytes. METHODS The cytotoxicity of the extracts was determined using a resazurin reduction assay meanwhile flow cytometry was used to measure cell cycle, apoptosis, mitochondrial membrane potential (MMP), and reactive oxygen species. RESULTS In an initial screening using leukemia CCRF-CEM cells, ten extracts from five plants namely Alchornea floribunda, Annona muricata, Euphorbia prostata, Pachypodanthium staudtii and Passiflora edulis displayed IC50 values below 20 µg/mL. They were further tested in 8 other cell lines as well as in normal AML12 hepatocytes. All selected extracts were active against leukemia CEM/ADR5000 cells with IC50 value below 40 µg/mL. IC50 values ranging from 10.13 µg/mL (towards CEM/ADR5000 cells) to 72.01 µg/mL [towards resistant colon carcinoma HCT116 (p53-/-) cells] for Pachypodanthium staudtii roots and from 0.11 µg/mL (towards CCRF-CEM cells) to 108 µg/mL (towards P-glycoprotein-over-expressing CEM/ADR5000 cells) for doxorubicin were obtained in the eight other cancer cell lines studied. Extracts from Annona muricata leaves (AML) and seeds (AMS), and Passiflora edulis fruit (PEF) had IC50 values below 1 µg/mL against CCRF-CEM cells and below 10 µg/mL against its MDR subline CEM/ADR5000 cells. AML, AMS and PEF induced MMP-loss-mediated apoptosis in CCRF-CEM cells. CONCLUSIONS Results of the present study suggest that some of the tested plants namely Alchornea floribunda, Annona muricata, Euphorbia prostata, Pachypodanthium staudtii and Passiflora edulis represent a source of anticancer drugs. Annona muricata and Passiflora edulis are good cytotoxic plants that could be exploited to develop phytomedicine to fight mostly hematological cancers including MDR phenotypes.
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Affiliation(s)
- Victor Kuete
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of Mainz, 55128 Mainz, Germany
- Department of Biochemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Joachim K. Dzotam
- Department of Biochemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Igor K. Voukeng
- Department of Biochemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Aimé G. Fankam
- Department of Biochemistry, Faculty of Science, University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of Mainz, 55128 Mainz, Germany
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Amin A, Tuenter E, Cos P, Maes L, Exarchou V, Apers S, Pieters L. Antiprotozoal and Antiglycation Activities of Sesquiterpene Coumarins from Ferula narthex Exudate. Molecules 2016; 21:E1287. [PMID: 27681714 PMCID: PMC6274357 DOI: 10.3390/molecules21101287] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 09/19/2016] [Accepted: 09/22/2016] [Indexed: 11/20/2022] Open
Abstract
The exudate of Ferula narthex Boiss. (Apiaceae) is widely used in the Indian subcontinent as a spice and because of its health effects. Six sesquiterpene coumarins have been isolated from this exudate: feselol, ligupersin A, asacoumarin A, 8'-O-acetyl-asacoumarin A, 10'R-karatavacinol and 10'R-acetyl-karatavacinol. Based on its use in infectious and diabetic conditions, the isolated constituents were evaluated for antimicrobial and antiglycation activities. Some compounds showed activity against protozoal parasites, asacoumarin A being the most active one against Plasmodium falciparum K1 (IC50 1.3 μM). With regard to antiglycation activity, in the BSA-glucose test, ligupersin A displayed the highest activity (IC50 0.41 mM), being more active than the positive control aminiguanidine (IC50 1.75 mM). In the BSA-MGO assay, the highest activity was shown by 8'-O-acetyl-asacoumarin A (IC50 1.03 mM), being less active than aminoguanidine (IC50 0.15 mM). Hence, the antiglycation activity of the isolated constituents was due to both oxidative and non-oxidative modes of inhibition.
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Affiliation(s)
- Adnan Amin
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
| | - Emmy Tuenter
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
| | - Paul Cos
- Laboratory of Parasitology, Microbiology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
| | - Louis Maes
- Laboratory of Parasitology, Microbiology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
| | - Vassiliki Exarchou
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.
| | - Sandra Apers
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, 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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Bajin Ba Ndob I, Mengome LE, Bourobou Bourobou HP, Lossangoye Banfora Y, Bivigou F. Ethnobotanical survey of medicinal plants used as anthelmintic remedies in Gabon. JOURNAL OF ETHNOPHARMACOLOGY 2016; 191:360-371. [PMID: 27296084 DOI: 10.1016/j.jep.2016.06.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Revised: 06/04/2016] [Accepted: 06/08/2016] [Indexed: 05/21/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In this article, we report on an ethnobotanical survey realized at the Peyrie market in Libreville on Gabonese medicinal plants used to treat helminthiasis. While several alerts about cases of resistance to conventional anthelmintic treatments are causing to fear a public and animal health issue, the search for new sources of active compounds becomes an urgent issue. In Gabon like in many developing countries, people regularly turn to traditional medicine in case of physical ailments and/or spiritual healing therapies. MATERIALS AND METHODS To determine which medicinal plants are traditionally used by the populations of Libreville to fight against nematodes, medicinal plant traders were interviewed with standardized questionnaires. The surveys were conducted in the main market of Libreville. Ethnobotanical data such as frequency and percentage of families, species, administrations pathways, modes of preparations and parts of plants used were analyzed and summarized. RESULTS Thirty-four (34) traders were interviewed belonging to five (5) different ethnic groups. Twenty-four 24 plants used to treat intestinal, cutaneous and ocular helminthiasis were listed. The healers mainly turned towards to ligneous species. The parts of the plant used are mostly leaves and trunk bark. Most of the traditional remedies are prepared directly in water and four (4) principal routes were used for administration namely, oral, rectal, ocular and dermal. CONCLUSION This study allowed us to list anthelmintic species which will be subjected to a series of chemical and pharmacological assays.
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Affiliation(s)
- Idensi Bajin Ba Ndob
- Institut de Pharmacopée et Médecines Traditionnelles (IPHAMETRA), Centre National de la Recherche Scientifique et Technique (CENAREST), BP: 12 141 Libreville, Gabon.
| | - Line Edwige Mengome
- Institut de Pharmacopée et Médecines Traditionnelles (IPHAMETRA), Centre National de la Recherche Scientifique et Technique (CENAREST), BP: 12 141 Libreville, Gabon.
| | - Henri-Paul Bourobou Bourobou
- Institut de Pharmacopée et Médecines Traditionnelles (IPHAMETRA), Centre National de la Recherche Scientifique et Technique (CENAREST), BP: 12 141 Libreville, Gabon.
| | - Yvon Lossangoye Banfora
- Institut de Pharmacopée et Médecines Traditionnelles (IPHAMETRA), Centre National de la Recherche Scientifique et Technique (CENAREST), BP: 12 141 Libreville, Gabon.
| | - Francis Bivigou
- Institut de Pharmacopée et Médecines Traditionnelles (IPHAMETRA), Centre National de la Recherche Scientifique et Technique (CENAREST), BP: 12 141 Libreville, Gabon; Gabon-Oregon Center (GOC), BP:23906 Libreville, Gabon.
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Boniface PK, Ferreira SB, Kaiser CR. Recent trends in phytochemistry, ethnobotany and pharmacological significance of Alchornea cordifolia (Schumach. & Thonn.) Muell. Arg. JOURNAL OF ETHNOPHARMACOLOGY 2016; 191:216-244. [PMID: 27296085 DOI: 10.1016/j.jep.2016.06.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/06/2016] [Accepted: 06/06/2016] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alchornea cordifolia (Schumach. & Thonn.) Muell. Arg. (Euphorbiaceae) (A. cordifolia) is widely distributed throughout tropical Africa, where it is used extensively in traditional medicine. Conditions for which the plant has enjoyed wide use are: coughs, gonorrhoea, infertility, prostatitis, bacterial infections, diarrhoea, ulcers, pain, inflammation, fever and bronchial troubles. This review summarizes the achievements of the investigations in traditional uses, ethnobotany, phytochemistry, biological activities and toxicological profile of A. cordifolia; this review also describes the shortcomings of studies on this herbal drug and thus serves as the basis of further scientific research and development of this traditional herbal drug. MATERIALS AND METHODS A. cordifolia-related information was collected from various resources including published articles in peer-reviewed journals, unpublished materials, textbooks, government survey reports and scientific databases such as Scifinder®, Pubmed, Science Direct, Wiley, Springer, ACS, Scielo, Web of Science and other web search instruments (Google, Yahoo), published on the subject from 1950 to 2016. 'The Plant List' (www.theplantlist.org) and 'Kew Royal Botanic Gardens' (mpns.kew.org) were used to validate the scientific name of the plant. RESULTS The literature revealed several reports on traditional uses, biological activities, chemical constituents and toxicological evaluation of A. cordifolia. The phytochemical information indicates identification of 95 compounds including fatty acids, terpenoids, flavonoids, phenolic acids, alkaloids, which exhibited various pharmacological activities such as wound healing, anti-inflammation, anticancer, antioxidant, immunomodulation, antidiarrhoeal, antimicrobial, antidepressant, hepatoprotective, antiplasmodial and anxiolytic. However, there are still significant gaps in the completeness of our understanding of A. cordifolia bioactivity, therapeutic value, and roles played by each of the numerous phytoconstituents. CONCLUSIONS The present review indicated that A. cordifolia is a valuable medicinal plant with multiple pharmacological effects. However, further research on the pharmacological mechanism of action of this plant is recommended in order to unravel the pharmacokinetics, pharmacodynamics, clinical relevance and toxicity of its extracts as well as constituents.
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Affiliation(s)
- Pone Kamdem Boniface
- Department of Organic Chemistry, Institute of Chemistry, University of Rio de Janeiro, Avenida Athos da Silveira Ramos, Rio de Janeiro (RJ) 21949-900, Brazil.
| | - Sabrina Baptista Ferreira
- Department of Organic Chemistry, Institute of Chemistry, University of Rio de Janeiro, Avenida Athos da Silveira Ramos, Rio de Janeiro (RJ) 21949-900, Brazil
| | - Carlos Roland Kaiser
- Department of Organic Chemistry, Institute of Chemistry, University of Rio de Janeiro, Avenida Athos da Silveira Ramos, Rio de Janeiro (RJ) 21949-900, Brazil
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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: 19] [Impact Index Per Article: 2.4] [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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Amin A, Tuenter E, Exarchou V, Upadhyay A, Cos P, Maes L, Apers S, Pieters L. Phytochemical and Pharmacological Investigations on Nymphoides indica Leaf Extracts. Phytother Res 2016; 30:1624-1633. [PMID: 27282639 DOI: 10.1002/ptr.5663] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 05/03/2016] [Accepted: 05/17/2016] [Indexed: 11/06/2022]
Abstract
Nymphoides indica (L.) Kuntze (Menyanthaceae) is traditionally used in the Indian subcontinent. However, scientific data reporting its constituents are poor. This study aimed at evaluating its phytochemical constituents and various biological activities. Phytochemical investigations of the extracts and fractions resulted in the isolation of 5 lipophilic compounds, i.e. azelaic (nonanedioic) acid (1) and 4-methyl-heptanedioic acid (3), hexadecanoic (2) and stearic acid (5) and the fatty alcohol hexadecanol (4); 3 seco-iridoids, i.e. 7-epiexaltoside (6), 6″,7″-dihydro-7-epiexaltoside (7) and menthiafolin (8); 3 flavonoids, i.e. 3,7-di-O-methylquercetin-4'-O-β-glucoside (9), 3-O-methylquercetin-7-O-β-glucoside (10) and 3,7-di-O-methylquercetin (11); scopoletin (12) and ferulic acid (13); and the monoterpenoids foliamenthoic acid (14) and 6,7-dihydrofoliamenthoic acid methyl ester (15). Compounds 1-5 showed moderate antimicrobial activities, whereas compound 9 presented mild antiprotozoal activities against Trypanosoma brucei (IC50 8 μM), Leishmania infantum (IC50 32 μM) and Trypanosoma cruzi (IC50 30 μM). Antiglycation activity was shown by compounds 7 (IC50 0.36 mM), 10 (IC50 0.42 mM) and 15 (IC50 0.61 mM). Finally α-glucosidase inhibition was shown by compounds 7, 9, 11 and 13-15. It could be concluded that N. indica leaf extracts possess mild to moderate antimicrobial, antiprotozoal, antioxidant and antidiabetic activities. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Adnan Amin
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium.
| | - Emmy Tuenter
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - Vassiliki Exarchou
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - Atul Upadhyay
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610, Antwerp, Belgium
| | - 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
| | - Sandra Apers
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610, Antwerp, 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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Agbodeka K, Gbekley HE, Karou SD, Anani K, Agbonon A, Tchacondo T, Batawila K, Simpore J, Gbeassor M. Ethnobotanical Study of Medicinal Plants Used for the Treatment of Malaria in the Plateau Region, Togo. Pharmacognosy Res 2016; 8:S12-8. [PMID: 27114686 PMCID: PMC4821101 DOI: 10.4103/0974-8490.178646] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND In Togo, malaria constitutes a major public health problem but, until now, the population still mostly relies on herbal medicine for healing. This study aimed to document medicinal plants used for malaria therapy in the Plateau region of the country. METHODOLOGY Semi-structured questionnaire interviews were used to gather ethnobotanical and sociodemographic data from traditional healers of the study area. RESULTS A total of 61 plants species belonging to 33 families were found to be in use for malaria therapy in the Plateau region. Caesalpiniaceae were the most represented family with 7 species, followed by Euphorbiaceae and Poaceae with 4 species each. According to the relative frequency of citation (RFC), Newbouldia laevis Seem. (RFC =0.52), Sarcocephalus latifolius (Sm.) E.A. Bruce (RFC =0.48), Acanthospermum hispidum DC. (RFC =0.43), and Senna siamea (Lam.) H.S. Irwin and Barneby (RFC =0.40) were the most cited in the treatment of malaria in the traditional medicine in the Plateau region. The parts of plants used could either be the barks, roots, leaves, or whole plants. The recipes also could be a combination of various species of plants or plant parts. CONCLUSION This study highlights the potential sources for the development of new antimalarial drugs from indigenous medicinal plants found in the Plateau region of Togo. Such results could be a starting point for in vitro antimalarial screenings. SUMMARY 61 plants species from 33 families are use for malaria therapy in the Plateau region of TogoThe main families are Caesalpiniaceae Euphorbiaceae and PoaceaeThe most used species are Newbouldia laevis Seem. (RFC = 0.52), Sarcocephalus latifolius (Sm.) E.A. Bruce (RFC = 0.48), Acanthospermum hispidum DC. (RFC = 0.43), and Senna siamea (Lam.) H.S. Irwin and Barneby (RFC = 0.40) Abbreviations Used: RFC: Relative frequency of citation, FC: Frequency of citation, Dec: Decoction, Orl: Oral route, Mac: Maceration, Jui: Juice, Inf: Infusion, Sau: Sauce, Kne: Kneading, Le: Leaves, Rt: Roots, Wp: Whole plant, St: Stem, Stb: Stem bark, Rh: Rhizome, Fr: Fruits, Pf: Plasmodium falciparum, IC50: Concentration of extract killing 50% parasites.
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Affiliation(s)
- Kodjovi Agbodeka
- Centre de recherche et de Formation sur les Plantes Médicinales, Université de Lomé, Togo
| | - Holaly E Gbekley
- Centre de recherche et de Formation sur les Plantes Médicinales, Université de Lomé, Togo
| | - Simplice D Karou
- Centre de recherche et de Formation sur les Plantes Médicinales, Université de Lomé, Togo; Centre de Recherche Biomoléculaire Pietro Annigoni, Ouagadougou, Burkina Faso
| | - Kokou Anani
- Centre de recherche et de Formation sur les Plantes Médicinales, Université de Lomé, Togo
| | - Amegnona Agbonon
- Centre de recherche et de Formation sur les Plantes Médicinales, Université de Lomé, Togo
| | - Tchadjobo Tchacondo
- Centre de recherche et de Formation sur les Plantes Médicinales, Université de Lomé, Togo
| | - Komlan Batawila
- Centre de recherche et de Formation sur les Plantes Médicinales, Université de Lomé, Togo
| | - Jacques Simpore
- Centre de Recherche Biomoléculaire Pietro Annigoni, Ouagadougou, Burkina Faso
| | - Messanvi Gbeassor
- Centre de recherche et de Formation sur les Plantes Médicinales, Université de Lomé, Togo
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Musuyu Muganza D, Fruth BI, Nzunzu Lami J, Cos P, Cimanga Kanyanga R, Maes L, Pieters L. In vitro antiprotozoal activity and cytotoxicity of extracts and fractions from the leaves, root bark and stem bark of Isolona hexaloba. JOURNAL OF ETHNOPHARMACOLOGY 2015; 174:187-194. [PMID: 26239153 DOI: 10.1016/j.jep.2015.07.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 06/24/2015] [Accepted: 07/24/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Isolona hexaloba (Pierre) Engl. and Diels (Annonaceae) is traditionally used in D.R. Congo against parasitic diseases including malaria. MATERIALS AND METHODS Two crude aqueous extracts, 3 crude methanol extracts and 3 crude 80% ethanol extracts from the leaves, root bark and stem bark together with 12 subfractions from the crude 80% ethanol extracts were evaluated in vitro for their antiprotozoal activity against Trypanosoma brucei brucei, T. cruzi, Leishmania infantum and the chloroquine and pyrimethamine resistant K1 strain of Plasmodium falciparum. Their cytotoxic effects against MRC-5 cell lines were also assessed. RESULTS Results indicated that the most pronounced activities against T. b. brucei were recorded for the crude methanol extracts of root bark (IC50=1.97 µg/ml; SI>32.49) and leaves (IC50=2.65 µg/ml; SI>24.15). Three samples displayed good activity against T. cruzi: the 80% methanol extract of leaves (IC50=8.33 µg/ml; SI>3.92), its petroleum ether fraction (IC50=8.50 µg/ml; SI=2.52) and the crude aqueous extract of the stem bark (IC50=9.31 µg/ml; SI=3.46). The crude aqueous extract of the leaves exhibited a pronounced and selective activity against L. infantum (IC50=2.00 µg/ml; SI>32). The crude methanol extract of leaves (IC50=6.35 µg/ml; SI>10.10) and the 2 dichloromethane soluble fractions of the 80% ethanol extracts from root bark (IC50=6.96 µg/ml; SI=6.1) and stem bark (IC50=8 µg/ml; SI>8.00) showed good activity and selectivity against L. infantum. The most active samples against Plasmodium falciparum K1 were the leaves crude 80% ethanol extract (0.92 µg/ml) and its fractions: alkaline aqueous (IC50=0.27 µg/ml), 90% methanol (0.90 µg/ml) and dichloromethane (1.04 µg/ml), respectively, with promising selectivity indexes of 35<SI<237. None of all the tested crude extracts and fractions was found to be cytotoxic against MRC-5 cell lines except the petroleum ether soluble fraction from the leaves which displayed a cytotoxic effect (CC50=21.40 µg/ml). CONCLUSION Overall, extracts of I. hexaloba tested here, showed good results concerning parasitic infections such as Chagas' disease, leishmaniasis, malaria and/or sleeping sickness without considerable toxicity. The 80% ethanol extracts from leaves and their fractions turned out to be of special interest as they were the most useful in the treatment of malaria.
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Affiliation(s)
- D Musuyu Muganza
- Faculty of Pharmaceutical Sciences, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo
| | - B I Fruth
- Centre for Research and Conservation/KMDA, Koningin Astridplein 20-26, B-2018 Antwerp, Belgium; Faculty of Biology/ Department Biology II, Ludwig Maximilian University of Munich,Großhaderner Straße 2, d-82152 Planegg-Martinsried, Germany
| | - J Nzunzu Lami
- Faculty of Pharmaceutical Sciences, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo
| | - P Cos
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - R Cimanga Kanyanga
- Faculty of Pharmaceutical Sciences, University of Kinshasa, P.O. Box 212, Kinshasa XI, Democratic Republic of Congo; Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium
| | - L Maes
- Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - L Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, B-2610, Antwerp, Belgium.
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Memvanga PB, Tona GL, Mesia GK, Lusakibanza MM, Cimanga RK. Antimalarial activity of medicinal plants from the Democratic Republic of Congo: A review. JOURNAL OF ETHNOPHARMACOLOGY 2015; 169:76-98. [PMID: 25862959 DOI: 10.1016/j.jep.2015.03.075] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 03/11/2015] [Accepted: 03/12/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Malaria is the most prevalent parasitic disease and the foremost cause of morbidity and mortality in the Democratic Republic of Congo. For the management of this disease, a large Congolese population recourses to traditional medicinal plants. To date the efficacy and safety of many of these plants have been validated scientifically in rodent malaria models. In order to generate scientific evidence of traditional remedies used in the Democratic Republic of Congo for the management of malaria, and show the potential of Congolese plants as a major source of antimalarial drugs, this review highlights the antiplasmodial and toxicological properties of the Congolese antimalarial plants investigated during the period of 1999-2014. In doing so, a useful resource for further complementary investigations is presented. Furthermore, this review may pave the way for the research and development of several available and affordable antimalarial phytomedicines. MATERIALS AND METHODS In order to get information on the different studies, a Google Scholar and PubMed literature search was performed using keywords (malaria, Congolese, medicinal plants, antiplasmodial/antimalarial activity, and toxicity). Data from non-indexed journals, Master and Doctoral dissertations were also collected. RESULTS Approximately 120 extracts and fractions obtained from Congolese medicinal plants showed pronounced or good antiplasmodial activity. A number of compounds with interesting antiplasmodial properties were also isolated and identified. Some of these compounds constituted new scaffolds for the synthesis of promising antimalarial drugs. Interestingly, most of these extracts and compounds possessed high selective activity against Plasmodium parasites compared to mammalian cells. The efficacy and safety of several plant-derived products was confirmed in mice, and a good correlation was observed between in vitro and in vivo antimalarial activity. The formulation of several plant-derived products also led to some clinical trials and license of three plant-derived drugs (Manalaria(®), Nsansiphos(®), and Quinine Pharmakina(®)). CONCLUSION The obtained results partly justify and support the use of various medicinal plants to treat malaria in folk medicine in the Democratic Republic of Congo. Antimalarial plants used in Congolese traditional medicine represent an important source for the discovery and development of new antimalarial agents. However, in order to ensure the integration of a larger number of plant-derived products in the Congolese healthcare system, some parameters and trends should be considered in further researches, in agreement with the objectives of the "Traditional Medicine Strategy" proposed by the World Health Organization in 2013. These include evaluation of geographical and seasonal variation, investigation of reproductive biology, assessment of prophylactic antimalarial activity, evaluation of natural products as adjuvant antioxidant therapy for malaria, development of plant-based combination therapies and monitoring of herbal medicines in pharmacovigilance systems.
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Affiliation(s)
- Patrick B Memvanga
- University of Kinshasa, Faculty of Pharmaceutical Sciences, Laboratory of Pharmaceutics and Phytopharmaceutical Drugs Development, B.P. 212 Kinshasa XI, Democratic Republic of Congo.
| | - Gaston L Tona
- University of Kinshasa, Faculty of Pharmaceutical Sciences, Laboratory of Pharmacology and Therapeutics, B.P. 212 Kinshasa XI, Democratic Republic of Congo
| | - Gauthier K Mesia
- University of Kinshasa, Faculty of Pharmaceutical Sciences, Laboratory of Pharmacology and Therapeutics, B.P. 212 Kinshasa XI, Democratic Republic of Congo
| | - Mariano M Lusakibanza
- University of Kinshasa, Faculty of Pharmaceutical Sciences, Laboratory of Pharmacology and Therapeutics, B.P. 212 Kinshasa XI, Democratic Republic of Congo
| | - Richard K Cimanga
- University of Kinshasa, Faculty of Pharmaceutical Sciences, Laboratory of Pharmacognosy, B.P. 212 Kinshasa XI, Democratic Republic of Congo; University of Antwerp, Department of Pharmaceutical Sciences, Laboratory of Pharmacognosy and Pharmaceutical Analysis, Universiteitsplein 1, B-2610 Antwerp, Belgium
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Mammino L, Bilonda MK. Computational study of antimalarial pyrazole alkaloids from Newbouldia laevis. J Mol Model 2014; 20:2464. [DOI: 10.1007/s00894-014-2464-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2014] [Accepted: 09/07/2014] [Indexed: 11/27/2022]
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Mujtaba Shah G, Abbasi AM, Khan N, Guo X, Ajab Khan M, Hussain M, Bibi S, Nazir A, Ahmad Tahir A. Traditional uses of medicinal plants against malarial disease by the tribal communities of Lesser Himalayas-Pakistan. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:450-62. [PMID: 24892831 DOI: 10.1016/j.jep.2014.05.047] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Revised: 05/20/2014] [Accepted: 05/23/2014] [Indexed: 05/24/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Malaria is among the most prevalent infectious diseases in the developing countries of world. Estimated number of annual malaria episodes in Pakistan is 1.5 million, but very little is known about medicinal plant species of Pakistan, which have great potential against malarial disease. Present study was aimed to document medicinal plant species used by the local inhabitants of Lesser Himalayas-Pakistan to treat malaria. MATERIALS AND METHODS Data were collected through interviews, questionnaires and contributor observation. A total of 55 informants aged between 25 and 80 years who were familiar with malarial disease participated in the survey. RESULTS A total of 84 plant species belonging to 69 genera and 50 families were recorded to treat malaria. Asteraceae was found as most cited botanical family with (11.9%) representation, followed by Lamiaceae (5.9%), Solanaceae and Verbenaceae (4.7%) and Violaceae (3.5%) respectively. About 60% of the inhabitants prefer herbal treatment by local herbalists or self-treatment with locally available medicinal plant species. Of the plants identified during present investigation against malaria, Azadirachta indica, Swertia chirayita and Swertia ciliata exhibited uppermost frequency of encounter (36.3%) and corresponding PR value 5. About 67.2% of the botanical taxa are reported for the first time in the treatment of malaria. It was observed thatover harvesting is the foremost threat to medicinal plant species of the study area. CONCLUSION Present survey indicates that traditional knowledge about the use of plant species against various diseases and particularly to treat malaria is in decline. Similarly anthropogenic pressure, over exploitation and grazing of the botanical taxa are the major concerns regarding medicinal plant biodiversity loss. Frequently utilized plant species with significant malarial reduction should be authenticated by in vitro and in vivo standard tests.
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Affiliation(s)
| | - Arshad Mehmood Abbasi
- School of Light Industry and Food Science, South China University of Technology, Guangzhou 510641, China; Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan.
| | - Nadeem Khan
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Xinbo Guo
- School of Light Industry and Food Science, South China University of Technology, Guangzhou 510641, China
| | - Mir Ajab Khan
- Department of Plant Sciences, Quaid-i-Azam University Islamabad, Islamabad 45320, Pakistan
| | - Manzoor Hussain
- Department of Botany, Hazara University, Mansehra 835215, Pakistan
| | - Sultan Bibi
- District Headquarter Hospital, Abbottabad 22010, Pakistan
| | - Abdul Nazir
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
| | - Adnan Ahmad Tahir
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
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Al Muqarrabun LMR, Ahmat N, Aris SRS. A review of the medicinal uses, phytochemistry and pharmacology of the genus Sapium. JOURNAL OF ETHNOPHARMACOLOGY 2014; 155:9-20. [PMID: 24877849 DOI: 10.1016/j.jep.2014.05.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 05/19/2014] [Accepted: 05/19/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Several species from the genus Sapium possess a broad range of medicinal properties and they have been used as traditional medicines by indigenous groups in several regions such as Malaysia, Africa, Southern China and Bolivia. Most of the species reported to possess therapeutic effects which are used for the treatment of skin-related diseases such as eczema and dermatitis, but they may also be used for overstrain, lumbago, constipation and hernia. Species of this genus are also used to treat wounds and snake bites. In addition, the saps/latex of Sapium glandulosum, Sapium indicum and Sapium sebiferum have/has toxic effects and are used as bird and fish poisons. This review discusses the current knowledge of the medicinal uses, phytochemistry, biological activities and toxicities of species from the genus Sapium to reveal their therapeutic potentials and gaps offering opportunities for future research. MATERIALS AND METHODS This review is based on a literature study of scientific journals and books from libraries and electronic sources, such as ScienceDirect, PubMed and ACS. RESULTS As many as 65 compounds are included in this review. They belong to different classes of compounds including flavonoids, terpenoids and several other types of compounds, such as alkaloids, phenolic acids and amides. The pharmacological studies revealed that various types of preparations, extracts and single compounds of species from this genus exhibited a broad spectrum of biological activities including antioxidant, antimicrobial, anti-inflammatory and cytotoxic activities. However, Sapium glandulosum, Sapium indicum and Sapium sebiferum were reported to possess toxic effects and Sapium sebiferum was found to contain phorbol esters acting as a tumor-promoting agent. CONCLUSION The genus Sapium consists of 23 accepted (high confidence) species. However, only very few of species have been phytochemically and pharmacologically studied. There is great potential to discover new chemical constituents from this genus because only a few species have been phytochemically investigated thus far. Only 27 compounds of 65 identified compounds have been studied for their biological activities. Several extracts and single compounds from this genus were reported to exhibit interesting biological activities such as antimicrobial, antioxidant and cytotoxic effects. Furthermore, the toxicity studies of some phorbol esters suggested that the compounds acted as potential tumor-promoting agents by stimulating protein kinase C. This is an interesting fact in which a plant with medicinal properties also possesses toxic effects as well. Therefore, more clinical studies on the toxicity of the extracts of the plants and the compounds isolated from this genus are also crucial to ensure their safety and to assess their eligibility for use as sources for modern medicines.
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Affiliation(s)
- L M R Al Muqarrabun
- Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia.
| | - N Ahmat
- Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia.
| | - S Ruzaina S Aris
- Faculty of Applied Sciences, Universiti Teknologi MARA (UiTM), 40450 Shah Alam, Selangor, Malaysia.
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Zahari Z, Jani NA, Amanah A, Latif MNA, Majid MIA, Adenan MI. Bioassay-guided isolation of a sesquiterpene lactone of deoxyelephantopin from Elephantopus scaber Linn. active on Trypanosome brucei rhodesience. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2014; 21:282-285. [PMID: 24269185 DOI: 10.1016/j.phymed.2013.09.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 08/08/2013] [Accepted: 09/19/2013] [Indexed: 06/02/2023]
Abstract
Methanolic extracts of 70 Malaysia plants were screened for their in vitro antitrypanosomal activity using Trypanosome brucei rhodesience, strain STIB 900 and mouse skeletal cell (L-6) in cytotoxicity activity assay. Results indicated that methanol extract from Elephantopus scaber Linn. (E. scaber) possessed the highest value of antitrypanosomal activity with good selectivity index (antitrypanosomal IC50 of 0.22±0.02 μg/ml, SI value of 204.55). Based on these results, E. scaber was chosen for further study by applying bioassay guided fractionation to isolate its antiprotozoal principle. The antiprotozoal principle was isolated from the ethyl acetate partition through solvent fractionation and crystallization process. The isolated active compound 1 was identified as deoxyelephantopin on the basis of its spectral analysis (FTIR, MS, 1D and 2D NMR).
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Affiliation(s)
- Zuriati Zahari
- Malaysian Institute of Pharmaceuticals and Nutraceuticals, Ministry of Science, Technology and Innovation, Malaysia
| | - Nor Akmalazura Jani
- Universiti Teknologi MARA Negeri Sembilan, Kampus Kuala Pilah, Beting, 72000 Kuala Pilah, Negeri Sembilan, Malaysia
| | - Azimah Amanah
- Malaysian Institute of Pharmaceuticals and Nutraceuticals, Ministry of Science, Technology and Innovation, Malaysia
| | - Mohd Naffidi Abdul Latif
- Malaysian Institute of Pharmaceuticals and Nutraceuticals, Ministry of Science, Technology and Innovation, Malaysia
| | | | - Mohd Ilham Adenan
- Malaysian Institute of Pharmaceuticals and Nutraceuticals, Ministry of Science, Technology and Innovation, Malaysia; Forest Research Institute Malaysia, 52109 Kepong, Selangor, Malaysia.
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Siwe Noundou X, Krause RWM, van Vuuren SF, Tantoh Ndinteh D, Olivier DK. Antibacterial activity of the roots, stems and leaves of Alchornea floribunda. JOURNAL OF ETHNOPHARMACOLOGY 2014; 151:1023-1027. [PMID: 24333961 DOI: 10.1016/j.jep.2013.12.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 08/14/2013] [Accepted: 12/03/2013] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alchornea floribunda Müll. Arg. is used in traditional medicine across Africa for the treatment of bacterial, fungal, parasitic and inflammatory disorders. AIM OF THE STUDY To evaluate the antibacterial activity of the crude extracts of different plant parts in order to provide a scientific rationale for the proposed broad efficacy of Alchornea floribunda in the treatment of bacterial infections. MATERIALS AND METHODS Extracts of roots, stems and leaves were prepared using solvents of various polarities in order to extract a wide range of phytochemicals. The antibacterial activity of these crude extracts was evaluated by micro-dilution assay, against Gram-positive (i.e. Bacillus cereus, Enterococcus faecalis, Staphylococcus aureus and Staphylococcus saprophyticus) as well as Gram-negative (i.e. Escherichia coli, Klebsiella pneumoniae, Moraxella catarrhalis and Proteus mirabilis) bacteria. RESULTS Generally, the ethanol (EtOH), methanol (MeOH), ethyl acetate (EtOAc) and chloroform (CHCl3) extracts demonstrated the best activities, with the leaves exhibiting the highest average activity for six of the eight pathogens. Of these, the ethanolic leaf extract was the most active against Staphylococcus aureus with an MIC value of 50µg/mL. Some other notable activity was observed for the ethyl acetate and chloroform root extracts against Staphylococcus aureus (50µg/mL), and for selected stem extracts against Staphylococcus aureus (50µg/mL), Klebsiella pneumoniae (63µg/mL) and Staphylococcus saprophyticus (63µg/mL). CONCLUSION This study demonstrates the promising antibacterial activity of Alchornea floribunda against both Gram-positive and Gram-negative bacteria responsible for gastrointestinal, skin, respiratory and urinary ailments, and validates its use in the ethnopharmacology of the region.
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Affiliation(s)
- X Siwe Noundou
- Department of Applied Chemistry, University of Johannesburg, PO Box 17011, Doornfontein, Johannesburg 2028, South Africa
| | - R W M Krause
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa.
| | - S F van Vuuren
- Department of Pharmacy and Pharmacology, University of the Witwatersrand, 7 York Road, Parktown 2193, South Africa
| | - D Tantoh Ndinteh
- Department of Chemistry, Rhodes University, Grahamstown 6140, South Africa
| | - D K Olivier
- School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, PO Box 17011, Doornfontein, Johannesburg 2028, South Africa
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Kikueta CM, Kambu OK, Mbenza AP, Mavinga ST, Mbamu BM, Cos P, Maes L, Apers S, Pieters L, Cimanga RK. In vitro and in vivo antimalarial activity and cytotoxicity of extracts and fractions from the leaves, root-bark and stem-bark of Triclisia gilletii. JOURNAL OF ETHNOPHARMACOLOGY 2013; 149:438-442. [PMID: 23876596 DOI: 10.1016/j.jep.2013.06.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 06/13/2013] [Accepted: 06/17/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE To evaluate the in vitro antiplasmodial activity and cytotoxicity, and the in vivo activity of extracts and fractions from the leaves, root-bark and stem-bark of Triclisia gilletii (De Wild) Staner (Menispermaceae), used in traditional medicine against malaria. MATERIALS AND METHODS The aqueous and 80% MeOH extracts, and a series of fractions and subfractions from the leaves, stem and root-bark of Triclisia gilletii were tested in vitro for their antiplasmodial activity against a Congolese-sensitive strain of Plasmodium falciparum, against the chloroquine and pyrimethamine-resistant K1 strain of Plasmodium falciparum, for cytotoxicity against MRC-5 cells, and in vivo in mice infected with Plasmodium berghei berghei. RESULTS Many samples from the three plant parts exhibited pronounced activity against the Congolese chloroquine-sensitive strain of Plasmodium falciparum with some IC50 values <0.02 µg/ml, and against the K1 strain, with some IC50 <0.25; the selectivity was higher against the Congolese strain. At oral doses of 200 and 400mg/kg body weight in infected mice, the aqueous, 80% methanol and total alkaloid extracts from the three plant parts produced more than 65% and 75% chemosuppression, respectively. The antiplasmodial activity of these three plant parts of Triclisia gilletii can at least in part be attributed to bisbenzylisoquinoline alkaloids, and supports its use for the treatment of uncomplicated malaria in traditional medicine.
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Affiliation(s)
- C M Kikueta
- Faculty of Pharmaceutical Sciences, University of Kinshasa, Kinshasa XI, Democratic Republic of Congo
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Van Reet N, Pyana P, Rogé S, Claes F, Büscher P. Luminescent multiplex viability assay for Trypanosoma brucei gambiense. Parasit Vectors 2013; 6:207. [PMID: 23856321 PMCID: PMC3728213 DOI: 10.1186/1756-3305-6-207] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Accepted: 07/09/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND New compounds for the treatment of human African trypanosomiasis (HAT) are urgently required. Trypanosoma brucei (T.b.) gambiense is the leading cause of HAT, yet T.b. gambiense is often not the prime target organism in drug discovery. This may be attributed to the difficulties in handling this subspecies and the lack of an efficient viability assay to monitor drug efficacy. METHODS In this study, a T.b. gambiense strain, recently isolated in the D.R. Congo, was made bioluminescent by transfection with Renilla luciferase (RLuc) without altering its in vitro and in vivo growth characteristics. A luminescent multiplex viability assay (LMVA), based on measurement of the Renilla luciferase activity and the ATP content of the cells within the same experiment, was investigated as an alternative to the standard fluorimetric resazurin viability assay for drug sensitivity testing of T.b. gambiense. RESULTS In a 96-well format, the RLuc transfected strain showed a detection limit of 2 × 10(4) cells ml(-1) for the Renilla luciferase measurement and 5 × 10(3) cells ml(-1) for the ATP measurement. Both assays of the LMVA showed linearity up to 10(6) cells ml(-1) and correlated well with the cell density during exponential growth of the long slender bloodstream forms. The LMVA was compared to the fluorimetric resazurin viability assay for drug sensitivity testing of pentamidine, eflornithine, nifurtimox and melarsoprol with both the wild type and the RLuc transfected population. For each drug, the IC50 value of the RLuc population was similar to that of the wild type when determined with either the fluorimetric resazurin method or the LMVA. For eflornithine, nifurtimox and melarsoprol we found no difference between the IC50 values in both viability assays. In contrast, the IC50 value of pentamidine was higher when determined with the fluorimetric resazurin method than in both assays of the LMVA. CONCLUSIONS LMVA has some advantages for viability measurement of T.b. gambiense: it requires less incubation time for viability detection than the fluorimetric resazurin assay and in LMVA, two sensitive and independent viability assays are performed in the same experiment.
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Affiliation(s)
- Nick Van Reet
- Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium.
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41
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Lumpu SL, Kikueta CM, Tshodi ME, Mbenza AP, Kambu OK, Mbamu BM, Cos P, Maes L, Apers S, Pieters L, Cimanga RK. Antiprotozoal screening and cytotoxicity of extracts and fractions from the leaves, stem bark and root bark of Alstonia congensis. JOURNAL OF ETHNOPHARMACOLOGY 2013; 148:724-727. [PMID: 23612422 DOI: 10.1016/j.jep.2013.04.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 04/09/2013] [Accepted: 04/12/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE To evaluate the antiprotozoal activity and cytotoxicity of extracts and fractions from the leaves, root bark and stem bark of Alstonia congensis (Apocynaceae), used in traditional medicine against parasitic diseases. MATERIALS AND METHODS The aqueous and 80% MeOH extracts, and a series of fractions and subfractions from the leaves, stem and root bark of Alstonia congensis were tested in vitro for their antiprotozoal activity against Trypanosoma brucei brucei, Trypanosoma cruzi, Lesihamania infantum and the chloroquine and pyrimethamine-resistant K1 strain of Plasmodium falciparum. Their cytotoxicity on MRC-5 cells (human lung fibroblasts) was evaluated as well. RESULTS The aqueous and 80% MeOH extracts and a series of subfractions of each plant part exhibited pronounced antiprotozoal activity against the K1 strain of Plasmodium falciparum with IC50 values ranging from 2 to 5 µg/ml, and good activity against Trypanosoma brucei brucei and Trypanosoma cruzi with IC50 values ranging between 5 and 10 µg/ml. The residual 80% MeOH extract from the leaves, and the total alkaloid extract from stem and root bark were the only subfractions active against Leishmania infantum with IC50 values <10 µg/ml. None of the samples from the root bark was cytotoxic against MRC-cell lines (CC50>64 µg/ml). In general, the aqueous extract (traditional decoction) showed the highest selectivity, especially against Plasmodium falciparum. CONCLUSION These results can partly support and justify the traditional use of these plant parts of Alstonina congensis as raw materials for the preparation of traditional remedies to treat parasitic diseases such as malaria and trypanosomiasis.
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Affiliation(s)
- S L Lumpu
- Faculty of Pharmaceutical Sciences, University of Kinshasa, PO Box 212, Kinshasa XI, Congo
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Kouakou K, Schepetkin IA, Yapi A, Kirpotina LN, Jutila MA, Quinn MT. Immunomodulatory activity of polysaccharides isolated from Alchornea cordifolia. JOURNAL OF ETHNOPHARMACOLOGY 2013; 146:232-242. [PMID: 23291534 PMCID: PMC3577965 DOI: 10.1016/j.jep.2012.12.037] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 12/17/2012] [Accepted: 12/25/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Extracts of leaves from different species of the genus Alchornea have been used for centuries to treat a variety of medicinal problems in tropical Africa. However, little is known about the high-molecular weight active components conferring therapeutic properties to these extracts. OBJECTIVE The aim of this study was to evaluate the immunomodulatory activity of polysaccharides isolated from the leaves of Alchornea cordifolia. MATERIALS AND METHODS Water-soluble polysaccharides from leaves of Alchornea cordifolia were extracted and fractionated by DEAE-cellulose, Diaion HP-20, and size-exclusion chromatography. Molecular weight, sugar analysis, and other physical and chemical characterization of the fractions were performed. Immunomodulatory activity of the polysaccharide fractions was evaluated by determining their ability to induce monocyte/macrophage nitric oxide (NO) and cytokine production. Activation of mitogen activated protein kinases (MAPK) was also assessed using a phospho-MAPK array. Activation of nuclear factor κB (NF-κB) was measured using an alkaline phosphatase reporter gene assay in THP1-Blue monocytic cells. RESULTS Six polysaccharide fractions from Alchornea cordifolia were isolated. Fractions containing type II arabinogalactan had potent immunomodulatory activity. Particularly, the parent fraction AP-AU and its high-molecular weight sub-fraction AP-AU1 (average M(r) was estimated to be 39.5kDa) induced production of NO and cytokines [interleukin (IL)-1β, -6, -10, tumor necrosis factor (TNF)-α, and granulocyte-macrophage-colony stimulating factor (GM-CSF)] in human peripheral blood mononuclear cells and human and murine monocyte/macrophages cell lines in vitro. Furthermore, treatment with AP-AU1 induced phosphorylation of Akt2, p38δ/p38γ, p70S6K1, RSK2, and mTOR, as well as stimulation of NF-κB transcriptional activity. CONCLUSION Our results provide a molecular basis to explain a portion of the beneficial therapeutic properties of water extracts from Alchornea cordifolia leaves in traditional folk medicine of Africa.
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Affiliation(s)
- Koffi Kouakou
- Laboratoire d'Endocrinologie et Biologie de la Reproduction, Université de Cocody-Abidjan, Côte d'Ivoire
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Mothana RA, Al-Musayeib NM, Matheeussen A, Cos P, Maes L. Assessment of the in vitro antiprotozoal and cytotoxic potential of 20 selected medicinal plants from the island of Soqotra. Molecules 2012; 17:14349-60. [PMID: 23208469 PMCID: PMC6268263 DOI: 10.3390/molecules171214349] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 11/18/2012] [Accepted: 11/30/2012] [Indexed: 11/18/2022] Open
Abstract
Malaria, leishmaniasis and human African trypanosomiasis continue to be major public health problems in need of new and more effective drugs. The aim of this study was to evaluate in vitro antiprotozoal activity of twenty endemic medicinal plants collected from the island of Soqotra in the Indian Ocean. The plant materials were extracted with methanol and tested for antiplasmodial activity against erythrocytic schizonts of Plasmodium falciparum, for antileishmanial activity against intracellular amastigotes of Leishmania infantum and for antitrypanosomal activity against intracellular amastigotes of Trypanosoma cruzi and free trypomastigotes of T. brucei. To assess selectivity, cytotoxicity was determined against MRC-5 fibroblasts. Selective activity was obtained for Punica protopunica against Plasmodium (IC₅₀ 2.2 µg/mL) while Eureiandra balfourii and Hypoestes pubescens displayed activity against the three kinetoplastid parasites (IC₅₀ < 10 µg/mL). Acridocarpus socotranus showed activity against T. brucei and T. cruzi (IC₅₀ 3.5 and 8.4 µg/mL). Ballochia atrovirgata, Dendrosicycos socotrana, Dracaena cinnabari and Euphorbia socotrana displayed non-specific inhibition of the parasites related to high cytotoxicity.
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Affiliation(s)
- Ramzi A. Mothana
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; E-Mail:
- Department of Pharmacognosy, Faculty of Pharmacy, Sana’a University, P.O. Box 33039, Sana’a, Yemen
| | - Nawal M. Al-Musayeib
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; E-Mail:
| | - An Matheeussen
- Laboratory for Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Antwerp University, Universiteitsplein 1, 2610 Wilrijk-Antwerp, Belgium; E-Mails: (A.M.); (P.C.); (L.M.)
| | - Paul Cos
- Laboratory for Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Antwerp University, Universiteitsplein 1, 2610 Wilrijk-Antwerp, Belgium; E-Mails: (A.M.); (P.C.); (L.M.)
| | - Louis Maes
- Laboratory for Microbiology, Parasitology and Hygiene (LMPH), Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Antwerp University, Universiteitsplein 1, 2610 Wilrijk-Antwerp, Belgium; E-Mails: (A.M.); (P.C.); (L.M.)
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Kamaraj C, Kaushik NK, Rahuman AA, Mohanakrishnan D, Bagavan A, Elango G, Zahir AA, Santhoshkumar T, Marimuthu S, Jayaseelan C, Kirthi AV, Rajakumar G, Velayutham K, Sahal D. Antimalarial activities of medicinal plants traditionally used in the villages of Dharmapuri regions of South India. JOURNAL OF ETHNOPHARMACOLOGY 2012; 141:796-802. [PMID: 22433533 DOI: 10.1016/j.jep.2012.03.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2011] [Revised: 01/20/2012] [Accepted: 03/05/2012] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE An ethnopharmacological investigation of medicinal plants traditionally used to treat diseases associated with fevers in Dharmapuri region of South India was undertaken. Twenty four plants were identified and evaluated for their in vitro activity against Plasmodium falciparum and assessed for cytotoxicity against HeLa cell line. AIM OF THE STUDY This antimalarial in vitro study was planned to correlate and validate the traditional usage of medicinal plants against malaria. MATERIALS AND METHODS An ethnobotanical survey was made in Dharmapuri region, Tamil Nadu, India to identify plants used in traditional medicine against fevers. Selected plants were extracted with ethyl acetate and methanol and evaluated for antimalarial activity against erythrocytic stages of chloroquine (CQ)-sensitive 3D7 and CQ-resistant INDO strains of Plasmodium falciparum in culture using the fluorescence-based SYBR Green I assay. Cytotoxicity was determined against HeLa cells using MTT assay. RESULTS Promising antiplasmodial activity was found in Aegle marmelos [leaf methanol extract (ME) (IC(50)=7 μg/mL] and good activities were found in Lantana camara [leaf ethyl acetate extract (EAE) IC(50)=19 μg/mL], Leucas aspera (flower EAE IC(50)=12.5 μg/mL), Momordica charantia (leaf EAE IC(50)=17.5 μg/mL), Phyllanthus amarus (leaf ME IC(50)=15 μg/mL) and Piper nigrum (seed EAE IC(50)=12.5 μg/mL). The leaf ME of Aegle marmelos which showed the highest activity against Plasmodium falciparum elicited low cytotoxicity (therapeutic index>13). CONCLUSION These results provide validation for the traditional usage of some medicinal plants against malaria in Dharmapuri region, Tamil Nadu, India.
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Affiliation(s)
- Chinnaperumal Kamaraj
- Unit of Nanotechnology and Bioactive Natural Products, Post Graduate and Research Department of Zoology, C. Abdul Hakeem College, Melvisharam 632509, Vellore District, Tamil Nadu, India
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Musuyu Muganza D, Fruth BI, Nzunzu Lami J, Mesia GK, Kambu OK, Tona GL, Cimanga Kanyanga R, Cos P, Maes L, Apers S, Pieters L. In vitro antiprotozoal and cytotoxic activity of 33 ethonopharmacologically selected medicinal plants from Democratic Republic of Congo. JOURNAL OF ETHNOPHARMACOLOGY 2012; 141:301-308. [PMID: 22394563 DOI: 10.1016/j.jep.2012.02.035] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 01/13/2012] [Accepted: 02/19/2012] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The antiprotozoal and cytotoxic activity of the aqueous extracts from 33 medicinal plants, used by traditional healers for the treatment of various parasitic diseases and collected after an ethnopharmacological inventory conducted in the Bolongo area, Bandundu province in DR Congo, was evaluated. MATERIALS AND METHODS Decoctions were prepared, lyophilized and evaluated for in vitro antiprotozoal activity against Trypanosoma b. brucei, Trypanosoma cruzi, Leishmania infantum, and the chloroquine- and pyrimethamine-resistant K1 strain of Plasmodium falciparum. Cytotoxicity against MRC-5 cells was included to assess selectivity of activity. RESULTS Most of the tested extracts exhibited pronounced (IC(50)≤5μg/ml) or good (5<IC(50)≤10μg/ml) antiprotozoal activity against one or more of the selected protozoa. A total of 19 plant extracts inhibited Trypanosoma b. brucei, especially the extract from Isolona hexaloba stem bark (IC(50)=1.95μg/ml, SI=16.5); 8 plant extracts were active against Trypanosoma cruzi, the extracts from Enanatia chlorantha stem bark and Quassia africana root bark being the most active with IC(50) values of 1.87 and 1.88μg/ml, respectively (SI=3.0 and 3.3, respectively); 8 plant extracts showed activity against Leishmania infantum, with extracts from Napoleona vogelii stem bark and Quassia africana root bark as the most active with IC(50) values of 5.66 and 5.04μg/ml (SI=11.3 and 1.2). Finally, 9 plant extracts inhibited Plasmodium falciparum K1 with the extracts from Quassia africana (root bark and stem bark) being the most active ones with IC(50) values of 0.46 and 1.27μg/ml (SI=13.7 and 13.6). Extracts from Enantia chlorantha stem bark, Piptadeniastrum africanum stem bark and Quassia africana root bark were cytotoxic for MRC-5 cells (CC(50)<10μg/ml). CONCLUSIONS These results can partly support and justify the traditional use of some of these plant species for the treatment of parasitic diseases.
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Affiliation(s)
- D Musuyu Muganza
- Faculty of Pharmaceutical Sciences, University of Kinshasa, PO. Box 212, Kinshasa XI, Congo
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Santos KKA, Matias EFF, Sobral-Souza CE, Tintino SR, Morais-Braga MFB, Guedes GMM, Santos FAV, Sousa ACA, Rolón M, Vega C, de Arias AR, Costa JGM, Menezes IRA, Coutinho HDM. Trypanocide, cytotoxic, and antifungal activities of Momordica charantia. PHARMACEUTICAL BIOLOGY 2012; 50:162-166. [PMID: 22235885 DOI: 10.3109/13880209.2011.581672] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
CONTEXT Chagas disease, caused by Trypanosoma cruzi, is a public health problem. Currently, chemotherapy is the only available treatment for this disease, and the drugs used, nifurtimox and benzonidazol, present high toxicity levels. An alternative for replacing these drugs are natural extracts from Momordica charantia L. (Cucurbitaceae) used in traditional medicine because of their antimicrobial and biological activities. OBJECTIVE In this study, we evaluated the extract of M. charantia for its antiepimastigote, antifungal, and cytotoxic activities. MATERIALS AND METHODS An ethanol extract of leaves from M. charantia was prepared. To research in vitro antiepimastigote activity, T. cruzi CL-B5 clone was used. Epimastigotes were inoculated at a concentration of 1 × 10(5) cells/mL in 200 µl tryptose-liver infusion. For the cytotoxicity assay, J774 macrophages were used. The antifungal activity was evaluated by microdilution using strains of Candida albicans, Candida tropicalis, and Candida krusei. RESULTS The effective concentration capable of killing 50% of parasites (IC(50)) was 46.06 µg/mL. The minimum inhibitory concentration (MIC) was ≤ 1024 µg/mL. Metronidazole showed a potentiation of its antifungal effect when combined with an extract of M. charantia. CONCLUSIONS Our results indicate that M. charantia could be a source of plant-derived natural products with antiepimastigote and antifungal-modifying activity with moderate toxicity.
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Affiliation(s)
- Karla K A Santos
- Laboratório de Microbiologia e Biologia Molecular, Universidade Regional do Cariri, Crato (CE), Brasil
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Koudouvo K, Karou SD, Ilboudo DP, Kokou K, Essien K, Aklikokou K, de Souza C, Simpore J, Gbéassor M. In vitro antiplasmodial activity of crude extracts from Togolese medicinal plants. ASIAN PAC J TROP MED 2012; 4:129-32. [PMID: 21771436 DOI: 10.1016/s1995-7645(11)60052-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Revised: 11/27/2010] [Accepted: 01/15/2011] [Indexed: 10/18/2022] Open
Abstract
OBJECTIVE To investigate the antimalarial effect of a few plants in Togo folk medicine. METHODS After ethnobotanical survey, Opilia celtidifolia, Pavetta corymbosa (P. corymbosa) and Tamarindus indica (T. indica) were selected for screening. In vitro antimalarial tests were performed on crude extracts against fresh clinical isolates of Plasmodium falciparum using the semi microtest. RESULTS Different IC(50) values of the extracts ranged from 2.042 to 100.000 μg/mL. According to the results, the methanol extract of aerial part of P. corymbosa followed by aqueous extract of fruit of T. indica were the most active (IC(50) of 2.042 and 4.786 μg/mL, respectively). Qualitative test revealed the presence of alkaloids in the leaves of P. corymbosa that may be responsible for the activity of the plant. CONCLUSIONS Our study provides scientific evidence for usage of plant in the folk medicine, and further studies are needed for identification and purification of the active principles.
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Affiliation(s)
- Koffi Koudouvo
- Centre de Recherche et de Formation sur les Plantes Médicinales (CERFOPLAM), Université de Lomé, Togo
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Vadivel V, Nandety A, Biesalski HK. Antioxidant potential and health relevant functionality of traditionally processed Cassia hirsuta L. seeds: an Indian underutilized food legume. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2011; 66:245-253. [PMID: 21667144 DOI: 10.1007/s11130-011-0237-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The methanolic extract of Cassia hirsuta L. seed materials, an underutilized food legume collected from India, was analyzed for antioxidant activity and health relevant functionality. The methanolic extract of raw seeds contained a total free phenolic content of 15.82 ± 1.69 g catechin equivalent/100 g extract DM. Encouraging levels of ferric reducing/antioxidant power (FRAP, 1,446 mmol Fe[II]/mg extract), inhibition of ß-carotene degradation (48.81%) and scavenging activity against DPPH (64.40%) and superoxide (43.78%) radicals were exhibited by the raw samples. Further, 83.11% of α-amylase and 62.79% of α-glucosidase enzyme inhibition characteristics under in vitro starch digestion bioassay were also recorded. Sprouting + oil-frying caused an apparent increase on the total free phenolic content and a significant improvement in the antioxidant and free radical scavenging capacity of methanolic extract of C. hirsuta seeds, while soaking + cooking as well as open-pan roasting treatments showed diminishing effects. The analysis of the phenolic profile revealed the presence of gallic acid, p-coumaric acid and (+)-catechin in the methanolic extract of these seeds.
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Affiliation(s)
- Vellingiri Vadivel
- Institute for Biological Chemistry and Nutrition, University of Hohenheim, Stuttgart, Germany.
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Makambila- MC, Mbatchi B, Ardid D, Gelot A, Henrion C, Janisson R, A. Abena A, Banzouzi JT. Pharmacological Studies of Ten Medicinal Plants Used for Analgesic Purposes in Congo Brazzaville. INT J PHARMACOL 2011. [DOI: 10.3923/ijp.2011.608.615] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Koudouvo K, Karou DS, Kokou K, Essien K, Aklikokou K, Glitho IA, Simpore J, Sanogo R, De Souza C, Gbeassor M. An ethnobotanical study of antimalarial plants in Togo Maritime Region. JOURNAL OF ETHNOPHARMACOLOGY 2011; 134:183-90. [PMID: 21167269 DOI: 10.1016/j.jep.2010.12.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Revised: 11/15/2010] [Accepted: 12/05/2010] [Indexed: 05/21/2023]
Abstract
BACKGROUND Malaria continues to be of great concern in Togo, as it accounts for high mortality rates, principally in children. Although plant-based medicines are the only means in major malarious regions of the country, still very little is known about the medicinal plants and medical practices of the indigenous people. OBJECTIVE The present study aimed to document the indigenous medicinal plant utilization for the management of malaria and related symptoms in Togo Maritime Region. METHODOLOGY Fifty Traditional Healers (TH) were selected with the help leaders of Togolese Traditional Healers Associations and information on their knowledge on the use of plants for malaria therapeutic purposes was gathered using a semi-structured interviews. RESULTS After enquiries, 52 plant species belonging to 49 genera and 29 families were recorded. The most represented families were Rubiaceae and Rutaceae with four species each. Traditional healers agreed more in the treatment of malaria (ICF=0.70), fever (ICF=0.33) and anemia (ICF=0.20). For the treatment of malaria, 38.46% (20/52) of the species cited in the study were of high fidelity level (FL=100%). The leaves (58.22%), leafy stem (33.78%) and fruits (8.52%) were the most used parts in concoctions. The main mode of preparation was decoction (69%) and the administration was essentially by oral route (79%) and body-bath (14%). CONCLUSION The issue of the study showed that Togo Maritime Region TH have a good knowledge of antimalarial plants. However the study must be extend to the whole country to lead to innovative strategies in malaria control. Such results could be a starting point for in vitro antimalarial screenings.
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Affiliation(s)
- K Koudouvo
- Centre de Recherche et de Formation sur les Plantes médicinales (CERFOPLAM), Université de Lomé, Togo
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