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Viana Dos Santos MB, Braga de Oliveira A, Veras Mourão RH. Brazilian plants with antimalarial activity: A review of the period from 2011 to 2022. JOURNAL OF ETHNOPHARMACOLOGY 2024; 322:117595. [PMID: 38122914 DOI: 10.1016/j.jep.2023.117595] [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: 07/10/2023] [Revised: 11/16/2023] [Accepted: 12/12/2023] [Indexed: 12/23/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Malaria continues to be a serious global public health problem in subtropical and tropical countries of the world. The main drugs used in the treatment of human malaria, quinine and artemisinin, are isolates of medicinal plants, making the use of plants a widespread practice in countries where malaria is endemic. Over the years, due to the increased resistance of the parasite to chloroquine and artemisinin in certain regions, new strategies for combating malaria have been employed, including research with medicinal plants. AIM This review focuses on the scientific production regarding medicinal plants from Brazil whose antimalarial activity was evaluated during the period from 2011 to 2022. 2. METHODOLOGY For this review, four electronic databases were selected for research: Pubmed, ScienceDirect, Scielo and Periódicos CAPES. Searches were made for full texts published in the form of scientific articles written in Portuguese or English and in a digital format. In addition, prospects for new treatments as well as future research that encourages the search for natural products and antimalarial derivatives are also presented. RESULTS A total of 61 publications were encountered, which cited 36 botanical families and 92 species using different Plasmodium strains in in vitro and in vivo assays. The botanical families with the most expressive number of species found were Rubiaceae, Apocynaceae, Fabaceae and Asteraceae (14, 14, 9 and 6 species, respectively), and the most frequently cited species were of the genera Psychotria L. (8) and Aspidosperma Mart. (12), which belong to the families Rubiaceae and Apocynaceae. Altogether, 75 compounds were identified or isolated from 28 different species, 31 of which are alkaloids. In addition, the extracts of the analyzed species, including the isolated compounds, showed a significant reduction of parasitemia in P. falciparum and P. berghei, especially in the clones W2 CQ-R (in vitro) and ANKA (in vivo), respectively. The Brazilian regions with the highest number of species analyzed were those of the north, especially the states of Pará and Amazonas, and the southeast, especially the state of Minas Gerais. CONCLUSION Although many plant species with antimalarial potential have been identified in Brazil, studies of new antimalarial molecules are slow and have not evolved to the production of a phytotherapeutic medicine. Given this, investigations of plants of traditional use and biotechnological approaches are necessary for the discovery of natural antimalarial products that contribute to the treatment of the disease in the country and in other endemic regions.
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Affiliation(s)
- Maria Beatriz Viana Dos Santos
- Laboratório de Bioprospecção e Biologia Experimental - LabBBEx, Universidade Federal do Oeste do Pará, Rua Vera Paz, s/n, Salé, 68035-110, Santarém, PA, Brazil; Programa de Pós-Graduação Doutorado em Rede de Biodiversidade e Biotecnologia - BIONORTE/Polo Pará. Universidade Federal do Pará, Rua Augusto Corrêa, 01, Guamá, 66075-110, Belém, PA, Brazil.
| | - Alaíde Braga de Oliveira
- Laboratório de Bioprospecção e Biologia Experimental - LabBBEx, Universidade Federal do Oeste do Pará, Rua Vera Paz, s/n, Salé, 68035-110, Santarém, PA, Brazil; Programa de Pós-Graduação Doutorado em Rede de Biodiversidade e Biotecnologia - BIONORTE/Polo Pará. Universidade Federal do Pará, Rua Augusto Corrêa, 01, Guamá, 66075-110, Belém, PA, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas - PPGCF, Faculdade de Farmácia, Departamento de Produtos Farmacêuticos, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil.
| | - Rosa Helena Veras Mourão
- Laboratório de Bioprospecção e Biologia Experimental - LabBBEx, Universidade Federal do Oeste do Pará, Rua Vera Paz, s/n, Salé, 68035-110, Santarém, PA, Brazil; Programa de Pós-Graduação Doutorado em Rede de Biodiversidade e Biotecnologia - BIONORTE/Polo Pará. Universidade Federal do Pará, Rua Augusto Corrêa, 01, Guamá, 66075-110, Belém, PA, Brazil
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Richard-Bollans A, Aitken C, Antonelli A, Bitencourt C, Goyder D, Lucas E, Ondo I, Pérez-Escobar OA, Pironon S, Richardson JE, Russell D, Silvestro D, Wright CW, Howes MJR. Machine learning enhances prediction of plants as potential sources of antimalarials. FRONTIERS IN PLANT SCIENCE 2023; 14:1173328. [PMID: 37304721 PMCID: PMC10248027 DOI: 10.3389/fpls.2023.1173328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/20/2023] [Indexed: 06/13/2023]
Abstract
Plants are a rich source of bioactive compounds and a number of plant-derived antiplasmodial compounds have been developed into pharmaceutical drugs for the prevention and treatment of malaria, a major public health challenge. However, identifying plants with antiplasmodial potential can be time-consuming and costly. One approach for selecting plants to investigate is based on ethnobotanical knowledge which, though having provided some major successes, is restricted to a relatively small group of plant species. Machine learning, incorporating ethnobotanical and plant trait data, provides a promising approach to improve the identification of antiplasmodial plants and accelerate the search for new plant-derived antiplasmodial compounds. In this paper we present a novel dataset on antiplasmodial activity for three flowering plant families - Apocynaceae, Loganiaceae and Rubiaceae (together comprising c. 21,100 species) - and demonstrate the ability of machine learning algorithms to predict the antiplasmodial potential of plant species. We evaluate the predictive capability of a variety of algorithms - Support Vector Machines, Logistic Regression, Gradient Boosted Trees and Bayesian Neural Networks - and compare these to two ethnobotanical selection approaches - based on usage as an antimalarial and general usage as a medicine. We evaluate the approaches using the given data and when the given samples are reweighted to correct for sampling biases. In both evaluation settings each of the machine learning models have a higher precision than the ethnobotanical approaches. In the bias-corrected scenario, the Support Vector classifier performs best - attaining a mean precision of 0.67 compared to the best performing ethnobotanical approach with a mean precision of 0.46. We also use the bias correction method and the Support Vector classifier to estimate the potential of plants to provide novel antiplasmodial compounds. We estimate that 7677 species in Apocynaceae, Loganiaceae and Rubiaceae warrant further investigation and that at least 1300 active antiplasmodial species are highly unlikely to be investigated by conventional approaches. While traditional and Indigenous knowledge remains vital to our understanding of people-plant relationships and an invaluable source of information, these results indicate a vast and relatively untapped source in the search for new plant-derived antiplasmodial compounds.
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Affiliation(s)
| | - Conal Aitken
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
- EaStCHEM, School of Chemistry, University of St Andrews, St Andrews, United Kingdom
| | - Alexandre Antonelli
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
- Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Department of Biology, University of Oxford, Oxford, United Kingdom
| | | | - David Goyder
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | - Eve Lucas
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | - Ian Ondo
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | | | - Samuel Pironon
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
- UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC), Cambridge, United Kingdom
| | - James E. Richardson
- School of Biological, Earth and Environmental Sciences, University College Cork, Cork, Ireland
- Tropical Diversity Section, Royal Botanic Garden, Edinburgh, United Kingdom
- Departamento de Biología, Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
- Environmental Research Institute, University College Cork, Cork, Ireland
| | - David Russell
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
| | - Daniele Silvestro
- Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden
- Department of Biology, University of Fribourg, Fribourg, Switzerland
- Swiss Institute of Bioinformatics, Fribourg, Switzerland
| | - Colin W. Wright
- School of Pharmacy and Medical Sciences, University of Bradford, Bradford, United Kingdom
| | - Melanie-Jayne R. Howes
- Royal Botanic Gardens, Kew, Richmond, United Kingdom
- Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, London, United Kingdom
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3
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Faloye KO, Adesida SA, Oguntimehin SA, Adewole AH, Omoyeni OB, Fajobi SJ, Ugwo JP, Asiyanbola ID, Bamimore VO, Fakola EG, Oladiran OJ, Spiteller M. LC-MS Analysis, Computational Investigation, and Antimalarial Studies of Azadirachta indica Fruit. Bioinform Biol Insights 2023; 17:11779322231154966. [PMID: 36860650 PMCID: PMC9969453 DOI: 10.1177/11779322231154966] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 01/17/2023] [Indexed: 03/03/2023] Open
Abstract
Malaria is a deadly disease that continues to pose a threat to children and maternal well-being. This study was designed to identify the chemical constituents in the ethanolic fruit extract of Azadirachta indica, elucidate the pharmacological potentials of identified phytochemicals through the density functional theory method and carry out the antimalarial activity of extract using chemosuppression and curative models. The liquid chromatography-mass spectrometry (LC-MS) analysis of the ethanolic extract was carried out, followed by the density functional theory studies of the identified phytochemicals using B3LYP and 6-31G (d, p) basis set. The antimalarial assays were performed using the chemosuppression (4 days) and curative models. The LC-MS fingerprint of the extract led to the identification of desacetylnimbinolide, nimbidiol, O-methylazadironolide, nimbidic acid, and desfurano-6α-hydroxyazadiradione. Also, the frontier molecular orbital properties, molecular electrostatic potential, and dipole moment studies revealed the identified phytochemicals as possible antimalarial agents. The ethanolic extract of A indica fruit gave 83% suppression at 800 mg/kg, while 84% parasitaemia clearance was obtained in the curative study. The study provided information about the phytochemicals and background pharmacological evidences of the antimalarial ethnomedicinal claim of A indica fruit. Thus, isolation and structure elucidation of the identified phytochemicals from the active ethanolic extract and extensive antimalarial studies towards the discovery of new therapeutic agents is recommended for further studies.
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Affiliation(s)
- Kolade O Faloye
- Department of Chemistry, Faculty of
Science, Obafemi Awolowo University, Ile-Ife, Nigeria,Kolade O Faloye, Department of Chemistry,
Faculty of Science, Obafemi Awolowo University, Ile-Ife, Nigeria.
| | - Stephen A Adesida
- Department of Pharmacognosy, Faculty of
Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Samuel A Oguntimehin
- Department of Pharmacognosy, Faculty of
Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Adetola H Adewole
- Department of Chemistry, University of
Pretoria, Pretoria, South Africa
| | - Olajide B Omoyeni
- Department of Chemistry, Faculty of
Science, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Sunday J Fajobi
- Department of Pharmacology, Faculty of
Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Jeremiah P Ugwo
- Department of Chemistry, School of
Science, Federal College of Education, Okene, Nigeria
| | - Isaac D Asiyanbola
- Department of Chemistry, School of
Science, Federal College of Education, Okene, Nigeria
| | - Victoria O Bamimore
- Department of Botany, Faculty of
Science, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Emmanuel G Fakola
- Department of Chemistry, Faculty of
Science, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Olayemi J Oladiran
- Department of Pharmacognosy, Faculty of
Pharmacy, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Michael Spiteller
- Institute of Environmental Research
(INFU), Department of Chemistry and Chemical Biology, TU Dortmund, Dortmund,
Germany
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Morais CMG, Brito RMDM, Weselucha-Birczyńska A, Pereira VSDS, Pereira-Silva JW, Menezes A, Pessoa FAC, Kucharska M, Birczyńska-Zych M, Ríos-Velásquez CM, de Andrade-Neto VF. Blood-stage antiplasmodial activity and oocyst formation-blockage of metallo copper-cinchonine complex. Front Cell Infect Microbiol 2022; 12:1047269. [PMID: 36530433 PMCID: PMC9751060 DOI: 10.3389/fcimb.2022.1047269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Accepted: 11/08/2022] [Indexed: 12/03/2022] Open
Abstract
In the fight against malaria, the key is early treatment with antimalarial chemotherapy, such as artemisinin-based combination treatments (ACTs). However, Plasmodium has acquired multidrug resistance, including the emergence of P. falciparum strains with resistance to ACT. The development of novel antimalarial molecules, that are capable of interfering in the asexual and sexual blood stages, is important to slow down the transmission in endemic areas. In this work, we studied the ability of the mettalo copper-cinchonine complex to interfere in the sexual and asexual stages of Plasmodium. The tested compound in the in vitro assay was a cinchonine derivative, named CinCu (Bis[Cinchoninium Tetrachlorocuprate(II)]trihydrate). Its biological functions were assessed by antiplasmodial activity in vitro against chloroquine-resistant P. falciparum W2 strain. The mice model of P. berghei ANKA infection was used to analyze the antimalarial activity of CinCu and chloroquine and their acute toxicity. The oocyst formation-blocking assay was performed by experimental infection of Anopheles aquasalis with P. vivax infected blood, which was treated with different concentrations of CinCu, cinchonine, and primaquine. We found that CinCu was able to suppress as high as 81.58% of parasitemia in vitro, being considered a molecule with high antiplasmodial activity and low toxicity. The in vivo analysis showed that CinCu suppressed parasitemia at 34% up to 87.19%, being a partially active molecule against the blood-stage forms of P. berghei ANKA, without inducing severe clinical signs in the treated groups. The transmission-blocking assay revealed that both cinchonine and primaquine were able to reduce the infection intensity of P. vivax in A. aquasalis, leading to a decrease in the number of oocysts recovered from the mosquitoes' midgut. Regarding the effect of CinCu, the copper-complex was not able to induce inhibition of P. vivax infection; however, it was able to induce an important reduction in the intensity of oocyst formation by about 2.4 times. It is plausible that the metallo-compound also be able to interfere with the differentiation of parasite stages and/or ookinete-secreted chitinase into the peritrophic matrix of mosquitoes, promoting a reduction in the number of oocysts formed. Taken together, the results suggest that this compound is promising as a prototype for the development of new antimalarial drugs. Furthermore, our study can draw a new pathway for repositioning already-known antimalarial drugs by editing their chemical structure to improve the antimalarial activity against the asexual and sexual stages of the parasite.
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Affiliation(s)
- Camila Martins Gomes Morais
- Laboratory of Malaria and Toxoplasmosis Biology, Department of Microbiology and Parasitology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil,Post-Graduate Program in Parasitic Biology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Ramayana Morais de Medeiros Brito
- Laboratory of Malaria and Toxoplasmosis Biology, Department of Microbiology and Parasitology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil,Laboratory of Immunology and Genomics of Parasites, Department of Parasitology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Valeska Santana de Sena Pereira
- Laboratory of Malaria and Toxoplasmosis Biology, Department of Microbiology and Parasitology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil,Post-Graduate Program in Biochemistry and Molecular Biology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil
| | - Jordam William Pereira-Silva
- Laboratory of Infectious Disease Ecology in the Amazon, Leônidas and Maria Deane Institute, Fiocruz, Manaus, AM, Brazil,Post-Graduate Program in Living Conditions and Health Situations in the Amazon, Leônidas and Maria Deane Institute, Fiocruz, Manaus, AM, Brazil
| | - Alexandre Menezes
- Post-Graduate Program in Biology of Host-Pathogen interaction, Leônidas and Maria Deane Institute, Fiocruz, Manaus, AM, Brazil
| | - Felipe Arley Costa Pessoa
- Laboratory of Infectious Disease Ecology in the Amazon, Leônidas and Maria Deane Institute, Fiocruz, Manaus, AM, Brazil
| | - Martyna Kucharska
- Department of Chemical Physics, Faculty of Chemistry, Jagiellonian University, Kraków, Poland
| | - Malwina Birczyńska-Zych
- Department of Infectious and Tropical Diseases, Medical College, Jagiellonian University, Kraków, Poland,Department of Infectious Diseases, The University Hospital in Kraków, Kraków, Poland
| | - Claudia María Ríos-Velásquez
- Laboratory of Infectious Disease Ecology in the Amazon, Leônidas and Maria Deane Institute, Fiocruz, Manaus, AM, Brazil,*Correspondence: Valter Ferreira de Andrade-Neto, ; ; Claudia María Ríos-Velásquez, ;
| | - Valter Ferreira de Andrade-Neto
- Laboratory of Malaria and Toxoplasmosis Biology, Department of Microbiology and Parasitology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, RN, Brazil,*Correspondence: Valter Ferreira de Andrade-Neto, ; ; Claudia María Ríos-Velásquez, ;
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Leitão SG, Leitão GG, de Oliveira DR. Saracura-Mirá, a Proposed Brazilian Amazonian Adaptogen from Ampelozizyphus amazonicus. PLANTS (BASEL, SWITZERLAND) 2022; 11:191. [PMID: 35050079 PMCID: PMC8781190 DOI: 10.3390/plants11020191] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/21/2021] [Accepted: 01/08/2022] [Indexed: 06/14/2023]
Abstract
The Amazon Forest is known all over the world for its diversity and exuberance, and for sheltering several indigenous groups and other traditional communities. There, as well as in several other countries, in traditional medical systems, weakness, fatigue and debility are seen as limiting health conditions where medicinal plants are often used in a non-specific way to improve body functions. This review brings together literature data on Ampelozizyphus amazonicus, commonly known in Brazil as "saracura-mirá" and/or "cerveja de índio", as an Amazonian adaptogen, including some contributions from the authors based on their ethnographic and laboratory experiences. Topics such as botany, chemistry, ethnopharmacological and pharmacological aspects that support the adaptogen character of this plant, as well as cultivation, market status and supply chain aspects are discussed, and the gaps to establish "saracura-mirá" as an ingredient for the pharmaceutical purposes identified. The revised data presented good scientific evidence supporting the use of this Amazonian plant as a new adaptogen. Literature data also reveal that a detailed survey on natural populations of this plant is needed, as well as agronomical studies that could furnish A. amazonicus bark as a raw material. Another important issue is the lack of developed quality control methods to assure its quality assessment.
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Affiliation(s)
- Suzana Guimarães Leitão
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Bl. A2, sl. 10, Rio de Janeiro 21941-902, Brazil
| | - Gilda Guimarães Leitão
- Instituto de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, Centro de Ciências da Saúde, Bloco H, Rio de Janeiro 21941-902, Brazil;
| | - Danilo Ribeiro de Oliveira
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Bl. A2, sl. 10, Rio de Janeiro 21941-902, Brazil
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Ceravolo IP, Aguiar AC, Adebayo JO, Krettli AU. Studies on Activities and Chemical Characterization of Medicinal Plants in Search for New Antimalarials: A Ten Year Review on Ethnopharmacology. Front Pharmacol 2021; 12:734263. [PMID: 34630109 PMCID: PMC8493299 DOI: 10.3389/fphar.2021.734263] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/31/2021] [Indexed: 11/17/2022] Open
Abstract
Malaria is an endemic disease that affected 229 million people and caused 409 thousand deaths, in 2019. Disease control is based on early diagnosis and specific treatment with antimalarial drugs since no effective vaccines are commercially available to prevent the disease. Drug chemotherapy has a strong historical link to the use of traditional plant infusions and other natural products in various cultures. The research based on such knowledge has yielded two drugs in medicine: the alkaloid quinine from Cinchona species, native in the Amazon highland rain forest in South America, and artemisinin from Artemisia annua, a species from the millenary Chinese medicine. The artemisinin-based combination therapies (ACTs), proven to be highly effective against malaria parasites, and considered as “the last bullet to fight drug-resistant malaria parasites,” have limited use now due to the emergence of multidrug resistance. In addition, the limited number of therapeutic options makes urgent the development of new antimalarial drugs. This review focuses on the antimalarial activities of 90 plant species obtained from a search using Pubmed database with keywords “antimalarials,” “plants” and “natural products.” We selected only papers published in the last 10 years (2011–2020), with a further analysis of those which were tested experimentally in malaria infected mice. Most plant species studied were from the African continent, followed by Asia and South America; their antimalarial activities were evaluated against asexual blood parasites, and only one species was evaluated for transmission blocking activity. Only a few compounds isolated from these plants were active and had their mechanisms of action delineated, thereby limiting the contribution of these medicinal plants as sources of novel antimalarial pharmacophores, which are highly necessary for the development of effective drugs. Nevertheless, the search for bioactive compounds remains as a promising strategy for the development of new antimalarials and the validation of traditional treatments against malaria. One species native in South America, Ampelozyzyphus amazonicus, and is largely used against human malaria in Brazil has a prophylactic effect, interfering with the viability of sporozoites in in vitro and in vivo experiments.
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Affiliation(s)
- Isabela P Ceravolo
- Instituto René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Brazil
| | - Anna C Aguiar
- Departamento de Biociência, Universidade Federal de São Paulo, Santos, Brazil
| | - Joseph O Adebayo
- Department of Biochemistry, University of Ilorin, Ilorin, Nigeria
| | - Antoniana U Krettli
- Instituto René Rachou, Fundação Oswaldo Cruz (Fiocruz), Belo Horizonte, Brazil
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Kuo T, Yang G, Chen T, Wu Y, Tran Nguyen Minh H, Chen L, Chen W, Huang M, Liang Y, Yang W. Bidens pilosa
: Nutritional value and benefits for metabolic syndrome. FOOD FRONTIERS 2021. [DOI: 10.1002/fft2.63] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Affiliation(s)
- Tien‐Fen Kuo
- Biotechnology Research Center Academia Sinica Taipei Taiwan
| | - Greta Yang
- Biotechnology Research Center Academia Sinica Taipei Taiwan
| | - Tzung‐Yan Chen
- Biotechnology Research Center Academia Sinica Taipei Taiwan
- Translational Research Center Academia Sinica Taipei Taiwan
| | - Yueh‐Chen Wu
- Biotechnology Research Center Academia Sinica Taipei Taiwan
| | - Hieu Tran Nguyen Minh
- Biotechnology Research Center Academia Sinica Taipei Taiwan
- Institute of Biotechnology National Taiwan University Taipei Taiwan
| | - Lin‐Shyan Chen
- Biotechnology Research Center Academia Sinica Taipei Taiwan
| | - Wen‐Chu Chen
- Biotechnology Research Center Academia Sinica Taipei Taiwan
- Department of Life Sciences National Chung‐Hsing University Taichung Taiwan
| | | | - Yu‐Chuan Liang
- Biotechnology Research Center Academia Sinica Taipei Taiwan
| | - Wen‐Chin Yang
- Biotechnology Research Center Academia Sinica Taipei Taiwan
- Translational Research Center Academia Sinica Taipei Taiwan
- Institute of Biotechnology National Taiwan University Taipei Taiwan
- Department of Life Sciences National Chung‐Hsing University Taichung Taiwan
- Institute of Pharmacology National Yang‐Ming University Taipei Taiwan
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8
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Nabatanzi A, M. Nkadimeng S, Lall N, Kabasa JD, J. McGaw L. Ethnobotany, Phytochemistry and Pharmacological Activity of Kigelia africana (Lam.) Benth. (Bignoniaceae). PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9060753. [PMID: 32549404 PMCID: PMC7356732 DOI: 10.3390/plants9060753] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/20/2020] [Accepted: 05/23/2020] [Indexed: 01/07/2023]
Abstract
Kigelia africana has been used in the management of human ailments since time immemorial. Ethnobotanists have documented the traditional uses of K. africana, which include treatment of skin disorders, cancer and gynecological complaints, among others. This has interested scientists, who have examined K. africana plant parts for their bioactivity. This review provides an insightful understanding on the ethnobotany, phytochemistry and pharmacology of K. africana. Web search engines Google and Google Scholar, as well as the databases of PubMed, Scopus, JSTOR, HINARI, SID, AJOL and Springer Link, were exhaustively searched using key words and phrases. Institutional reports and conference papers were also consulted. A total of 125 relevant international literature sources meeting the inclusion criteria were included. Kigelia africana has biologically active phytochemicals, many of which have been isolated. Whilst the fruits are most often cited in pharmacological studies, other plant parts are also used in herbal preparations. Commercially available products have been formulated from K. africana, though many have not been fully standardized. Despite many efforts by researchers to scientifically validate traditional uses of K. africana, many remain merely claims, thus the need to conduct more research, scientifically validate other traditional uses, isolate new bioactive phytochemicals and standardize K. africana products.
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Affiliation(s)
- Alice Nabatanzi
- Department of Plant Sciences, Microbiology and Biotechnology, College of Natural Sciences, Makerere University, Kampala 00256, Uganda
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa; (S.M.N.); (L.J.M.)
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield 0028, South Africa;
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala 00256, Uganda;
- Future Africa, University of Pretoria, Hatfield 0028, South Africa
- Correspondence: or ; Tel.: +256-782-036497
| | - Sanah M. Nkadimeng
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa; (S.M.N.); (L.J.M.)
| | - Namrita Lall
- Department of Plant and Soil Sciences, University of Pretoria, Hatfield 0028, South Africa;
- School of Natural Resources, University of Missouri, Columbia, MO 65211, USA
- College of Pharmacy, JSS Academy of Higher Education and Research, Mysuru, Karnataka 570015, India
| | - John D. Kabasa
- College of Veterinary Medicine, Animal Resources and Biosecurity, Makerere University, Kampala 00256, Uganda;
| | - Lyndy J. McGaw
- Phytomedicine Programme, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa; (S.M.N.); (L.J.M.)
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Dibessa TT, Engidawork E, Nedi T, Teklehaymanot T. Antimalarial activity of the aqueous extract of the latex of Aloe pirottae Berger. (Aloaceae) against Plasmodium berghei in mice. JOURNAL OF ETHNOPHARMACOLOGY 2020; 255:112763. [PMID: 32169423 DOI: 10.1016/j.jep.2020.112763] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 03/09/2020] [Accepted: 03/10/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE In spite of worldwide efforts, malaria remains one of the most devastating illnesses in the world. The huge number of lives it takes and the resistance of malaria parasites to current drugs necessitate the search for new effective antimalarial drugs. Medicinal plants have been the major source of such drugs and A. pirottae is one of these plants used traditionally for the treatment of malaria in Ethiopia. AIM This study was aimed at evaluating the antimalarial activity of the aqueous extract of A. pirottae against chloroquine sensitive P. berghei in mice. MATERIALS AND METHODS The extract was obtained by macerating the latex of A. pirottae with distilled water. To determine its antiplasmodial activity, a 4-day suppressive model was used by dividing 40 mice into five groups of 8 mice each and given 200, 400 & 600mg/kg of the extract, the standard drug (chloroquine 25mg/kg) and the vehicle (distilled water). Then parasite suppression by the extract, survival time and prevention of loss of body weight, rectal temperature and packed cell volume were assessed. All data were presented as the Mean ± SEM (Standard Error of the Mean) and analyzed using IBM SPSS version 20. RESULTS The extract showed moderate antimalarial activity by significantly (p < 0.001) suppressing parasitemia at all dose levels with maximum parasitemia suppression of 47.0% and significantly (p < 0.01) increasing survival time. Furthermore, 400 mg/kg and 600 mg/kg doses showed significant (p < 0.01) prevention of loss in body weight, rectal temperature and packed cell volume. CONCLUSION Based to the results of this study, A. pirottae is endowed with a moderate antimalarial activity that is in agreement with the traditional claim of A. pirottae, hence may be used as a basis for further studies to be conducted on antimalarial activity of the plant.
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Affiliation(s)
- Tesfa Tekle Dibessa
- Wollega University, Institute of Health Sciences, Department of Pharmacy, Ethiopia.
| | - Ephrem Engidawork
- Addis Ababa University, School of Pharmacy, Department of Pharmacology and Clinical Pharmacy, Ethiopia.
| | - Teshome Nedi
- Addis Ababa University, School of Pharmacy, Department of Pharmacology and Clinical Pharmacy, Ethiopia.
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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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Gondim BL, Oshiro-Júnior JA, Fernanandes FH, Nóbrega FP, Castellano LR, Medeiros AC. Plant Extracts Loaded in Nanostructured Drug Delivery Systems for Treating Parasitic and Antimicrobial Diseases. Curr Pharm Des 2019; 25:1604-1615. [DOI: 10.2174/1381612825666190628153755] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 06/19/2019] [Indexed: 11/22/2022]
Abstract
Background: Plant extracts loaded in nanostructured drug delivery systems (NDDSs) have been reported
as an alternative to current therapies for treating parasitic and antimicrobial diseases. Among their advantages,
plant extracts in NDSSs increase the stability of the drugs against environmental factors by promoting
protection against oxygen, humidity, and light, among other factors; improve the solubility of hydrophobic compounds;
enhance the low absorption of the active components of the extracts (i.e., biopharmaceutical classification
II), which results in greater bioavailability; and control the release rate of the substances, which is fundamental
to improving the therapeutic effectiveness. In this review, we present the most recent data on NDDSs using
plant extracts and report results obtained from studies related to in vitro and in vivo biological activities.
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Affiliation(s)
- Brenna L.C. Gondim
- Laboratorio de Desenvolvimento e Ensaios de Medicamentos, Centro de Ciencias Biologicas e da Saude, Universidade Estadual da Paraiba, R. Baraunas, 351, Cidade Universitaria, Campina Grande, Paraiba, 58429-500, Brazil
| | - João A. Oshiro-Júnior
- Laboratorio de Desenvolvimento e Ensaios de Medicamentos, Centro de Ciencias Biologicas e da Saude, Universidade Estadual da Paraiba, R. Baraunas, 351, Cidade Universitaria, Campina Grande, Paraiba, 58429-500, Brazil
| | - Felipe H.A. Fernanandes
- Laboratorio de Desenvolvimento e Ensaios de Medicamentos, Centro de Ciencias Biologicas e da Saude, Universidade Estadual da Paraiba, R. Baraunas, 351, Cidade Universitaria, Campina Grande, Paraiba, 58429-500, Brazil
| | - Fernanda P. Nóbrega
- Laboratorio de Desenvolvimento e Ensaios de Medicamentos, Centro de Ciencias Biologicas e da Saude, Universidade Estadual da Paraiba, R. Baraunas, 351, Cidade Universitaria, Campina Grande, Paraiba, 58429-500, Brazil
| | - Lúcio R.C. Castellano
- Grupo de Estudos e Pesquisas em Imunologia Humana, Escola Tecnica de Saude, Universidade Federal da Paraiba, Joao Pessoa, PB, Brazil
| | - Ana C.D. Medeiros
- Laboratorio de Desenvolvimento e Ensaios de Medicamentos, Centro de Ciencias Biologicas e da Saude, Universidade Estadual da Paraiba, R. Baraunas, 351, Cidade Universitaria, Campina Grande, Paraiba, 58429-500, Brazil
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Ceravolo IP, Zani CL, Figueiredo FJB, Kohlhoff M, Santana AEG, Krettli AU. Aspidosperma pyrifolium, a medicinal plant from the Brazilian caatinga, displays a high antiplasmodial activity and low cytotoxicity. Malar J 2018; 17:436. [PMID: 30477525 PMCID: PMC6257952 DOI: 10.1186/s12936-018-2568-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 11/03/2018] [Indexed: 11/17/2022] Open
Abstract
Background Several species of Aspidosperma plants are referred to as remedies for the treatment of malaria, especially Aspidosperma nitidum. Aspidosperma pyrifolium, also a medicinal plant, is used as a natural anti-inflammatory. Its fractionated extracts were assayed in vitro for activity against malaria parasites and for cytotoxicity. Methods Aspidosperma pyrifolium activity was evaluated against Plasmodium falciparum using extracts in vitro. Toxicity towards human hepatoma cells, monkey kidney cells or human monocytes freshly isolated from peripheral blood was also assessed. Anti-malarial activity of selected extracts and fractions that presented in vitro activity were tested in mice with a Plasmodium berghei blood-induced infection. Results The crude stem bark extract and the alkaloid-rich and ethyl acetate fractions from stem extract showed in vitro activity. None of the crude extracts or fractions was cytotoxic to normal monkey kidney and to a human hepatoma cell lines, or human peripheral blood mononuclear cells; the MDL50 values of all the crude bark extracts and fractions were similar or better when tested on normal cells, with the exception of organic and alkaloidic-rich fractions from stem extract. Two extracts and two fractions tested in vivo caused a significant reduction of P. berghei parasitaemia in experimentally infected mice. Conclusion Considering the high therapeutic index of the alkaloidic-rich fraction from stem extract of A. pyrifolium, it makes the species a candidate for further investigation aiming to produce a new anti-malarial, especially considering that the active extract has no toxicity, i.e., no mutagenic effects in the genototoxicity assays, and that it has an in vivo anti-malarial effect. In its UPLC-HRMS analysis this fraction was shown to have two major components compatible with the bisindole alkaloid Leucoridine B, and a novel compound, which is likely to be responsible for the activity against malaria parasites demonstrated in in vitro tests.
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Affiliation(s)
- Isabela P Ceravolo
- Experimental and Human Malaria Section, Instituto René Rachou, FIOCRUZ, Belo Horizonte, MG, 30.190-009, Brazil
| | - Carlos L Zani
- Chemistry of Natural Products Section, Instituto René Rachou, FIOCRUZ, Belo Horizonte, MG, 30.190-009, Brazil
| | - Flávio J B Figueiredo
- Experimental and Human Malaria Section, Instituto René Rachou, FIOCRUZ, Belo Horizonte, MG, 30.190-009, Brazil
| | - Markus Kohlhoff
- Chemistry of Natural Products Section, Instituto René Rachou, FIOCRUZ, Belo Horizonte, MG, 30.190-009, Brazil
| | - Antônio E G Santana
- Centro de Ciências Agrárias, Universidade Federal de Alagoas, Maceió, AL, 57072-900, Brazil.
| | - Antoniana U Krettli
- Experimental and Human Malaria Section, Instituto René Rachou, FIOCRUZ, Belo Horizonte, MG, 30.190-009, Brazil.
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13
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Mzena T, Swai H, Chacha M. Antimalarial activity of Cucumis metuliferus and Lippia kituiensis against Plasmodium berghei infection in mice. Res Rep Trop Med 2018; 9:81-88. [PMID: 30050358 PMCID: PMC6049058 DOI: 10.2147/rrtm.s150091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background The search for new antimalarial drugs has become progressively urgent due to plasmodial resistance to most of the commercially available antimalarial drugs. As part of this effort, the study evaluated the antimalarial activity of Cucumis metuliferus and Lippia kituiensis, which are traditionally used in Tanzania for the treatment of malaria. Materials and methods In vivo antimalarial activity was assessed using the 4-day suppressive antimalarial assay. Mice were infected by injecting via tail vein 1×107 erythrocytes infected by Plasmodium berghei ANKA. Extracts were administered orally; chloroquine (10 mg/kg/day) and dimethyl sulfoxide (5 mL/kg/day) were used as positive and negative controls, respectively. The level of parasitemia, survival time, packed cell volume (PCV) and variation in body weight of mice were used to determine the antimalarial activity of the extract. Results The ethyl acetate, methanolic and chloroform extracts of C. metuliferus and L. kituiensis significantly (p<0.05) inhibited parasitemia in a dose-dependent manner and prevented loss of body weight at the dose levels of 600 mg/kg and 1500 mg/kg, respectively. In addition, the extracts prolonged the mean survival time of P. berghei-infected mice compared to the non-treated control. The plant extracts did not show reduction of PCV except at the low dose of 300 mg/kg. The highest suppression was recorded at the dose level of 1,500 mg/kg. At this dose, C. metuliferus in chloroform, methanolic and ethyl acetate extracts had percentage suppression of 98.55%, 88.89% and 84.39%, respectively, whereas L. kituiensis in ethyl acetate, chloroform and methanolic extracts exhibited suppression of the pathogens of 95.19%, 93.88% and 74.83%, respectively. Conclusion It is worth reporting that the two plants induced suppression which is equivalent to that induced by chloroquine (C. metuliferus chloroform and L. Kituiensis ethyl acetate). The two plants have been demonstrated to be potential sources of antimalarial templates.
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Affiliation(s)
- Theopista Mzena
- School of Life Sciences and Bio-Engineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania, theopistam@nm-aist
| | - Hulda Swai
- School of Life Sciences and Bio-Engineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania, theopistam@nm-aist
| | - Musa Chacha
- School of Life Sciences and Bio-Engineering, Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania, theopistam@nm-aist
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Grilo ML, Vanstreels RET, Wallace R, García-Párraga D, Braga ÉM, Chitty J, Catão-Dias JL, Madeira de Carvalho LM. Malaria in penguins - current perceptions. Avian Pathol 2017; 45:393-407. [PMID: 27009571 DOI: 10.1080/03079457.2016.1149145] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Avian malaria is a mosquito-borne disease caused by protozoans of the genus Plasmodium, and it is considered one of the most important causes of morbidity and mortality in captive penguins, both in zoological gardens and rehabilitation centres. Penguins are known to be highly susceptible to this disease, and outbreaks have been associated with mortality as high as 50-80% of affected captive populations within a few weeks. The disease has also been reported in wild penguin populations, however, its impacts on the health and fitness of penguins in the wild is not clear. This review provides an overview of the aetiology, life cycle and epidemiology of avian malaria, and provides details on the strategies that can be employed for the diagnostic, treatment and prevention of this disease in captive penguins, discussing possible directions for future research.
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Affiliation(s)
- M L Grilo
- a Interdisciplinary Centre of Research in Animal Health (CIISA), Faculdade de Medicina Veterinária , Universidade de Lisboa , Lisboa , Portugal.,b Institute for Terrestrial and Aquatic Wildlife Research , University of Veterinary Medicine Hannover, Foundation , Buesum , Germany
| | - R E T Vanstreels
- c Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia , Universidade de São Paulo , São Paulo , Brazil
| | - R Wallace
- d Milwaukee County Zoo , Milwaukee , WI , USA
| | - D García-Párraga
- e Veterinary Services , Oceanografic Ciudad de las Artes y las Ciencias , Valencia , Spain
| | - É M Braga
- f Departamento de Parasitologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , Brazil
| | | | - J L Catão-Dias
- c Laboratório de Patologia Comparada de Animais Selvagens, Departamento de Patologia, Faculdade de Medicina Veterinária e Zootecnia , Universidade de São Paulo , São Paulo , Brazil
| | - L M Madeira de Carvalho
- a Interdisciplinary Centre of Research in Animal Health (CIISA), Faculdade de Medicina Veterinária , Universidade de Lisboa , Lisboa , Portugal
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15
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Shah A, Rahim S. Ethnomedicinal uses of plants for the treatment of malaria in Soon Valley, Khushab, Pakistan. JOURNAL OF ETHNOPHARMACOLOGY 2017; 200:84-106. [PMID: 28192202 DOI: 10.1016/j.jep.2017.02.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 01/20/2017] [Accepted: 02/02/2017] [Indexed: 06/06/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE To best of our knowledge this is the first quantitative ethno-medicinal study with the aim of documenting the indigenous knowledge and practices of using plants for malarial therapy in Soon Valley, Khushab, Pakistan. In this Valley, malaria is among the major public health problems but, until now, the population still mostly relies on herbal medicine for treatment. MATERIALS AND METHODS Ethno-medicinal data were documented from 63 informants by using semi-structured questionnaires and interviewing the informants about their knowledge of plants regarding malaria and related symptoms. Documented data were evaluated using the quantitative ethno-botanical indices of frequency citation (FC), relative frequency of citation (RFC), percentage of respondents having knowledge (PRK) and Jaccard index (JI). RESULTS A total of 70 plant species belonging to 62 genera and 34 families were recorded as anti-malarial in the study area. Solanaceae was found to be the most cited family with 7 species, followed by Fabaceae, Rutaceae and Lamiaceae with 5 species each. Ocimum americanum and Solanum incanum were the species with the highest relative frequency of citation (RFC =0.25 each) and percentage of respondents having knowledge (PRK =25.4% each), followed by Grewia tenax (RFC =0.23, PRK =23.8%), which indicates that these plants are the best species with anti-malarial properties. The most highly cited life form was found to be herbs (56%). The dominant plant part used in preparations were leaves (49%). The main mode of utilization was decoction (47%) followed by infusion (29%). In comparison, maximum similarity index is found in our study with JI (16.83) followed by (13.13). Similarity percentage of plants uses ranges from 0.81 to 16.83 while dissimilarity percentage varies from 0% to 17.65%. CONCLUSIONS To the best of our knowledge seven plant species, viz. Withania coagulans, Fagonia cretica, Carthamus oxyacantha, Ehretia obtusifolia, Helianthus annuus, Olea ferruginea and Vitex trifolia, are reported from this region for the first time for the treatment of malaria. This first ethno-medicinal study highlights potential sources for the development of new antimalarial drugs from indigenous knowledge of medicinal plants found in the Soon Valley, Pakistan. Such investigations could be a subject for in vitro and in vivo anti-plasmodial screening to develop new plant-based antimalarial drugs and can also be evaluated for other biological activities and novel drug discoveries.
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Affiliation(s)
- Amin Shah
- Department of Botany, University of Sargodha, Pakistan.
| | - Sarvat Rahim
- Department of Botany, University of Sargodha, Pakistan.
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Baruah UK, Gowthamarajan K, Vanka R, Karri VVSR, Selvaraj K, Jojo GM. Malaria treatment using novel nano-based drug delivery systems. J Drug Target 2017; 25:567-581. [PMID: 28166440 DOI: 10.1080/1061186x.2017.1291645] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We reside in an era of technological innovation and advancement despite which infectious diseases like malaria remain to be one of the greatest threats to the humans. Mortality rate caused by malaria disease is a huge concern in the twenty-first century. Multiple drug resistance and nonspecific drug targeting of the most widely used drugs are the main reasons/drawbacks behind the failure in malarial therapy. Dose-related toxicity because of high doses is also a major concern. Therefore, to overcome these problems nano-based drug delivery systems are being developed to facilitate site-specific or target-based drug delivery and hence minimizing the development of resistance progress and dose-dependent toxicity issues. In this review, we discuss about the shortcomings in treating malaria and how nano-based drug delivery systems can help in curtailing the infectious disease malaria.
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Affiliation(s)
- Uday Krishna Baruah
- a Department of Pharmaceutics , JSS College of Pharmacy, Ootacamund, JSS University , Mysuru , India
| | - Kuppusamy Gowthamarajan
- a Department of Pharmaceutics , JSS College of Pharmacy, Ootacamund, JSS University , Mysuru , India
| | - Ravisankar Vanka
- a Department of Pharmaceutics , JSS College of Pharmacy, Ootacamund, JSS University , Mysuru , India
| | | | - Kousalya Selvaraj
- a Department of Pharmaceutics , JSS College of Pharmacy, Ootacamund, JSS University , Mysuru , India
| | - Gifty M Jojo
- a Department of Pharmaceutics , JSS College of Pharmacy, Ootacamund, JSS University , Mysuru , India
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Leesombun A, Boonmasawai S, Nishikawa Y. Effects of Thai piperaceae plant extracts on Neospora caninum infection. Parasitol Int 2017; 66:219-226. [PMID: 28137670 DOI: 10.1016/j.parint.2017.01.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 01/19/2017] [Accepted: 01/27/2017] [Indexed: 11/29/2022]
Abstract
Neosporosis has a worldwide distribution and causes economic losses in farming, particularly by increasing the risk of abortion in cattle. This study investigated the effects of Thai piperaceae (Piper betle, P. nigrum, and P. sarmentosum) extracts on Neospora caninum infections in vitro and in vivo. In an in vitro parasite growth assay based on the green fluorescent protein (GFP) signal, P. betle was the most effective extract at inhibiting parasite growth in human foreskin fibroblast cells (IC50 of GFP-expressing N. caninum parasites, 22.1μg/ml). The P. betle extract, at 25μg per ml, inhibited parasite invasion into host cells. Furthermore, in two independent experiments, treating N. caninum-infected mice with the P. betle extract for 7days post-infection increased their survival. In trial one, the anti-N. caninum effects of the P. betle extract reduced the mouse clinical scores for 30days post-infection (dpi). The survival rate of the mice treated with 400mg/kg was 100% compared with 66.6% for those treated with 100mg/kg and the non-treated controls. In trial two, treating the infected mice with the P. betle extract increased their survival at 50dpi. All mice in the non-treatment group died; however, the survival rates of the 400mg/kg-treated and 100mg/kg-treated mice were 83.3% and 33.3%, respectively. Also, a trend towards a reduced parasite burden was noted in the brains of the P. betle extract-treated mice, compared with the control mice. Therefore P. betle extract has potential as a medicinal plant for treating neosporosis.
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Affiliation(s)
- Arpron Leesombun
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan.
| | - Sookruetai Boonmasawai
- Department of Preclinical and Applied Animal Science, Faculty of Veterinary Science, Mahidol University, 999 Phutthamonthon Sai 4 Road Salaya, Phutthamonthon, Nakhon Pathom 73170, Thailand.
| | - Yoshifumi Nishikawa
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Inada-cho, Obihiro, Hokkaido 080-8555, Japan.
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Aguiar ACC, Cunha AC, Ceravolo IP, Gonçalves RAC, Oliveira AJB, Krettli AU. Aspidosperma (Apocynaceae) plant cytotoxicity and activity towards malaria parasites. Part II: experimental studies withAspidosperma ramiflorum in vivo and in vitro. Mem Inst Oswaldo Cruz 2016; 110:906-13. [PMID: 26560981 PMCID: PMC4660620 DOI: 10.1590/0074-02760150188] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 08/31/2015] [Indexed: 11/22/2022] Open
Abstract
Several species of Aspidosperma plants are used to treat diseases in the tropics, including Aspidosperma ramiflorum, which acts against leishmaniasis, an activity that is experimentally confirmed. The species, known as guatambu-yellow, yellow peroba, coffee-peroba and matiambu, grows in the Atlantic Forest of Brazil in the South to the Southeast regions. Through a guided biofractionation of A. ramiflorum extracts, the plant activity against Plasmodium falciparum was evaluated in vitro for toxicity towards human hepatoma G2 cells, normal monkey kidney cells and nonimmortalised human monocytes isolated from peripheral blood. Six of the seven extracts tested were active at low doses (half-maximal drug inhibitory concentration < 3.8 µg/mL); the aqueous extract was inactive. Overall, the plant extracts and the purified compounds displayed low toxicity in vitro. A nonsoluble extract fraction and one purified alkaloid isositsirikine (compound 5) displayed high selectivity indexes (SI) (= 56 and 113, respectively), whereas compounds 2 and 3 were toxic (SI < 10). The structure, activity and low toxicity of isositsirikine in vitro are described here for the first time in A. ramiflorum, but only the neutral and precipitate plant fractions were tested for activity, which caused up to 53% parasitaemia inhibition of Plasmodium berghei in mice with blood-induced malaria. This plant species is likely to be useful in the further development of an antimalarial drug, but its pharmacological evaluation is still required.
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Affiliation(s)
- Anna C C Aguiar
- Centro de Pesquisas René Rachou, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brasil
| | - Ananda C Cunha
- Departamento de Farmácia, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | | | | | - Arildo J B Oliveira
- Departamento de Farmácia, Universidade Estadual de Maringá, Maringá, PR, Brasil
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Kefe A, Giday M, Mamo H, Erko B. Antimalarial properties of crude extracts of seeds of Brucea antidysenterica and leaves of Ocimum lamiifolium. Altern Ther Health Med 2016; 16:118. [PMID: 27075995 PMCID: PMC4831165 DOI: 10.1186/s12906-016-1098-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Accepted: 04/09/2016] [Indexed: 11/25/2022]
Abstract
Background The search for new antimalarial drugs has become increasingly urgent due to plasmodial resistance to existing drugs. As part of this global effort, the present study aimed at evaluating the antimalarial activity of two traditionally used medicinal plants against the disease. Methods Acute toxicity and four-day suppressive effects of aqueous, methanol and chloroform extracts of the seed and leaf of Brucea antidysenterica and Ocimum lamiifolium, respectively, were investigated in Swiss albino mice using Plasmodium berghei using standard procedures. Results Methanol extract of the leaves of O. lamiifolium did not exhibit any sign of acute toxicity up to the dose of 2000 mg/kg body weight. However, all mice provided with seeds of B. antidesenterica at a dose of 2000 mg/kg body died within 24 h. The aqueous, methanol and chloroform crude extracts of B. antidesenterica significantly (p < 0.05) inhibited parasitaemia in a dose-dependent manner and prevented body weight loss at doses of 200, 400 and 600 mg/kg body weight. In addition, the extracts prolonged the mean survival time of P. berghei-infected mice compared to the non-treated control. However, it did not prevent reduction in packed cell volume except the chloroform extract in three doses and methanol extract at 200 mg/kg and 400 mg/kg. Extracts from O. lamiifolium also exhibited significant (p < 0.05) antiplasmodial activities. The extracts did not prevent body weight loss and PCV reduction, especially in chloroform. The highest suppression was recorded from aqueous crude extract of O. lamiifolium with 35.53 % in the dose of 600 mg/kg. On the other hand, a similar higher suppression was found in both methanol and chloroform of crude extracts of B. antidesenterica with 47.70 %, 46.44 % of chemosuppression, respectively, in its highest dose tested. Conclusion Crude aqueous, methanol and chloroform extracts of the two medicinal plants possess acceptable antimalarial effects. However, further investigation should be pursued on toxicity study and to isolate the bioactive components responsible for the observed antimalarial action of the plants.
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Xuan TD, Khanh TD. Chemistry and pharmacology of Bidens pilosa: an overview. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2016; 46:91-132. [PMID: 32226639 PMCID: PMC7099298 DOI: 10.1007/s40005-016-0231-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 01/16/2016] [Indexed: 12/19/2022]
Abstract
Bidens pilosa L. is an edible herb and has been traditionally used for a wide range of ailments in many countries. The aim of this review is to present comprehensive information of the chemical constituents, nutraceutical and ethnomedical uses as well as the biological and pharmacological effects and toxicity of this plant based on 218 literary sources reported over 40 years. Major chemical constituents (including 301 compounds) belonging to polyacetylenes, polyacetylene glycosides, flavonoids, flavone glycosides, aurones, chalcones, okanin glycosides, phenolic acids, terpenes, pheophytins, fatty acids and phytosterols have been identified or isolated from the different parts of this plant. Many of them have been considered as the bioactive compounds which are potentially responsible for the pharmacological actions. Various types of preparations, extracts and individual compounds derived from this plant have been found to possess biological and pharmacological activities such as anti-malarial, anti-allergy, anti-hypertensive and smooth muscle relaxant, anti-cancerogenic, anti-diabetic, anti-inflammatory, anti-microbial, antioxidant. The results of data analysis on the chemicals, pharmacological and toxicological characteristics of B. pilosa validate the view of its folk worldwide-medicinal uses. This herb has a great beneficial therapeutic property and is possibly used for complement or alternative to pharmaceutical drugs in some specific cases. However, this herb is known as hyperaccumulator and as-excluder; therefore, harvesting the herb for medicinal uses should be judiciously cautioned.
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Affiliation(s)
- Tran Dang Xuan
- 2Graduate School for International Development and Cooperation, Hiroshima University, Kayamiyama 1-5-1, Higashihiroshima, 739-8529 Japan
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Kffuri CW, Lopes MA, Ming LC, Odonne G, Kinupp VF. Antimalarial plants used by indigenous people of the Upper Rio Negro in Amazonas, Brazil. JOURNAL OF ETHNOPHARMACOLOGY 2016; 178:188-198. [PMID: 26656535 DOI: 10.1016/j.jep.2015.11.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 11/24/2015] [Accepted: 11/30/2015] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE This is the first intercultural report of antimalarial plants in this region. The aim of this study was to document the medicinal plants used against malaria by indigenous people in the Upper Rio Negro region and to review the literature on antimalarial activity and traditional use of the cited species. MATERIALS AND METHODS Participant observation, semi-structured interviews, and ethnobotanical walks were conducted with 89 informants in five indigenous communities between April 2010 and November 2013 to obtain information on the use of medicinal plants against malaria. We reviewed academic databases for papers published in scientific journals up to January 2014 in order to find works on ethnopharmacology, ethnobotany, and antimalarial activity of the species cited. RESULTS Forty-six plant species belonging to 24 families are mentioned. Fabaceae (17.4%), Arecaceae (13.0%) and Euphorbiaceae (6.5%) account together for 36.9% of these species. Only seven plant species showed a relatively high consensus. Among the plant parts, barks (34.0%) and roots (28.0%) were the most widely used. Of the 46 species cited, 18 (39.1%) have already been studied for their antimalarial properties according to the literature, and 26 species (56.5%) have no laboratory essays on antimalarial activity. CONCLUSIONS Local traditional knowledge of the use of antimalarials is still widespread in indigenous communities of the Upper Rio Negro, where 46 plants species used against malaria were recorded. Our studies highlight promising new plants for future studies: Glycidendron amazonicum, Heteropsis tenuispadix, Monopteryx uaucu, Phenakospermum guianensis, Pouteria ucuqui, Sagotia brachysepala and notably Aspidosperma schultesii, Ampelozizyphus amazonicus, Euterpe catinga, E. precatoria, Physalis angulata, Cocos nucifera and Swartzia argentea with high-use consensus. Experimental validation of these remedies may help in developing new drugs for malaria.
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Affiliation(s)
- Carolina Weber Kffuri
- Universidade Estadual Paulista, Faculdade de Ciências Agronômica de Botucatu, Departamento de Horticultura, Rua José Barbosa de Barros, 1780, 18.610-307 Botucatu, São Paulo, Brazil.
| | | | - Lin Chau Ming
- Universidade Estadual Paulista, Faculdade de Ciências Agronômica de Botucatu, Departamento de Horticultura, Rua José Barbosa de Barros, 1780, 18.610-307 Botucatu, São Paulo, Brazil
| | - Guillaume Odonne
- CNRS-Guyane(USR 3456), 2 avenue Gustave Charlery, 97300 Cayenne, French Guiana
| | - Valdely Ferreira Kinupp
- Herbário EAFM, Instituto de Educação, Ciência e Tecnologia do Amazonas (IFAM), Manaus, Amazonas, Brazil
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do Carmo DFM, Amaral ACF, Machado M, Lopes D, Echevarria A, Rosário VE, Silva JRDA. Evaluation of Antiplasmodial activity of extracts and constituents from Ampelozizyphus amazonicus. Pharmacogn Mag 2015; 11:S244-50. [PMID: 26664012 PMCID: PMC4653334 DOI: 10.4103/0973-1296.166071] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Ampelozizyphus amazonicus Ducke, a plant that is widely used by the population of the Amazonian region to prevent and treat malaria, was investigated in this work, which describes, for the first time, the antiplasmodial activity of its extracts and associates this activity with its isolated constituents. METHODS Different extracts with solvents of increasing polarity (hexane, chloroform, ethanol, and water) were obtained of the root bark. This procedure resulted in extracts that were characterized for their constituents. The cytotoxicity and activity of the extracts against Plasmodium berghei (schizontocidal activity, liver stage) and Plasmodium falciparum (3D7 and Dd2 strains, erythrocyte stage) were assessed in vitro. RESULTS Of the four extracts assayed against P. berghei, the chloroform extract showed the greatest activity, with an inhibitory concentration 50% (IC50) value of 30.1 µg/mL, followed by the aqueous extract (IC50 = 39.9 µg/mL). The chloroform extract exhibited the highest antiplasmodial activity in the erythrocyte stage of P. falciparum, with an IC50 value lower than 15 µg/mL. Fractionation of this more active extract led to the isolation and elucidation of pentacyclic triterpenes, lupeol, betulin and betulinic acid, which showed antiplasmodial activities with IC50 values ranging from 5.6 to 80.30 µM. The most active of these, betulinic acid, was further quantified in the extracts by high-performance liquid chromatography-photodiode array detector analyzes. The higher amount was found in the chloroform extract, which was the most active one against P. falciparum. CONCLUSION The results obtained in this work may partly explain the popular intake of A. amazonicusas an antimalarial remedy in the Amazon region.
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Affiliation(s)
- Dominique F M do Carmo
- Department of Chemistry, Chromatography Laboratory, Federal University of Amazonas (UFAM), Rodrigo Otavio Avenue, 3000, Academic Campus, 69077-000, Manaus, Amazonas, Brazil
| | - Ana Claudia F Amaral
- Department of Natural Products, Medicinal Plants and Derivatives Laboratory, Farmanguinhos, Oswaldo Cruz Foundation (FIOCRUZ), Sizenando Nabuco Street, 100, Manguinhos, 21041-250, Brazil
| | - Marta Machado
- Parasitology Unit, Center of Studies on Malaria and Other Tropical Diseases, LA, Institute Hygiene and Tropical Medicine from the New University of Lisbon, Junqueira street, 100, 1349-008 Lisboa, Portugal, Brazil
| | - Dinora Lopes
- Parasitology Unit, Center of Studies on Malaria and Other Tropical Diseases, LA, Institute Hygiene and Tropical Medicine from the New University of Lisbon, Junqueira street, 100, 1349-008 Lisboa, Portugal, Brazil
| | - Aurea Echevarria
- Department of Chemistry, Federal Rural University of Rio de Janeiro (UFRRJ) Km 47, Seropedica, 23851970, Rio de Janeiro, RJ, Brazil
| | - Virgílio E Rosário
- Parasitology Unit, Center of Studies on Malaria and Other Tropical Diseases, LA, Institute Hygiene and Tropical Medicine from the New University of Lisbon, Junqueira street, 100, 1349-008 Lisboa, Portugal, Brazil
| | - Jefferson Rocha de A Silva
- Department of Chemistry, Chromatography Laboratory, Federal University of Amazonas (UFAM), Rodrigo Otavio Avenue, 3000, Academic Campus, 69077-000, Manaus, Amazonas, Brazil
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Aymard GA, Castro-Lima F. A Second Tree Species ofAmpelozizyphus(Rhamnaceae), from the Upper Cuyarí River Basin, Guianía (Colombia). ACTA ACUST UNITED AC 2015. [DOI: 10.3100/hpib.v20iss2.2015.n6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Frausin G, Hidalgo ADF, Lima RBS, Kinupp VF, Ming LC, Pohlit AM, Milliken W. An ethnobotanical study of anti-malarial plants among indigenous people on the upper Negro River in the Brazilian Amazon. JOURNAL OF ETHNOPHARMACOLOGY 2015. [PMID: 26216513 DOI: 10.1016/j.jep.2015.07.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
BACKGROUND In this article we present the plants used for the treatment of malaria and associated symptoms in Santa Isabel do Rio Negro in the Brazilian Amazon. The region has important biological and cultural diversities including more than twenty indigenous ethnic groups and a strong history in traditional medicine. OBJECTIVE The aims of this study are to survey information in the Baniwa, Baré, Desana, Piratapuia, Tariana, Tukano, Tuyuca and Yanomami ethnic communities and among caboclos (mixed-ethnicity) on (a) plant species used for the treatment of malaria and associated symptoms, (b) dosage forms and (c) distribution of these anti-malarial plants in the Amazon. METHODS Information was obtained through classical ethnobotanical and ethnopharmacological methods from interviews with 146 informants in Santa Isabel municipality on the upper Negro River, Brazil. RESULTS Fifty-five mainly native neotropical plant species from 34 families were in use. The detailed uses of these plants were documented. The result was 187 records (64.5%) of plants for the specific treatment of malaria, 51 records (17.6%) of plants used in the treatment of liver problems and 29 records (10.0%) of plants used in the control of fevers associated with malaria. Other uses described were blood fortification ('dar sangue'), headache and prophylaxis. Most of the therapeutic preparations were decoctions and infusions based on stem bark, root bark and leaves. These were administered by mouth. In some cases, remedies were prepared with up to three different plant species. Also, plants were used together with other ingredients such as insects, mammals, gunpowder and milk. CONCLUSION This is the first study on the anti-malarial plants from this region of the Amazon. Aspidosperma spp. and Ampelozizyphus amazonicus Ducke were the most cited species in the communities surveyed. These species have experimental proof supporting their anti-malarial efficacy. The dosage of the therapeutic preparations depends on the kind of plant, quantity of plant material available, the patient's age (children and adults) and the local expert. The treatment time varies from a single dose to up to several weeks. Most anti-malarial plants are domesticated or grow spontaneously. They are grown in home gardens, open areas near the communities, clearings and secondary forests, and wild species grow in areas of seasonally flooded wetlands and terra firme ('solid ground') forest, in some cases in locations that are hard to access. Traditional knowledge of plants was found to be falling into disuse presumably as a consequence of the local official health services that treat malaria in the communities using commercial drugs. Despite this, some species are used in the prevention of this disease and also in the recovery after using conventional anti-malarial drugs.
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Affiliation(s)
- Gina Frausin
- Coordenação de Tecnologia e Inovação, Instituto Nacional de Pesquisas da Amazônia, Avenida André Araújo, 2936, Petrópolis, CEP 69067-375 Manaus, Amazonas, Brazil.
| | - Ari de Freitas Hidalgo
- Faculdade de Ciências Agrárias, Universidade Federal do Amazonas, Avenida General Rodrigo Otávio Jordão Ramos, 6200, Coroado I, CEP 69077-000 Manaus, Amazonas, Brazil.
| | - Renata Braga Souza Lima
- Programa de Pós-graduação em Biotecnologia, Universidade Federal do Amazonas, Avenida General Rodrigo Otavio Jordão Ramos, 6200, Coroado I, CEP 69077-000 Manaus, Amazonas, Brazil.
| | - Valdely Ferreira Kinupp
- Instituto Federal de Educação, Ciência e Tecnologia do Amazonas, Avenida Ferreira Pena, 1109, Centro, CEP 69025-010 Manaus, Amazonas, Brazil.
| | - Lin Chau Ming
- Faculdade de Ciências Agronômicas, Universidade Estadual Paulista "Júlio de Mesquita Filho", Fazenda Experimental Lageado, Rua José Barbosa de Barros, 1780, Caixa Postal 237, CEP 18610-307 Botucatu, São Paulo, Brazil.
| | - Adrian Martin Pohlit
- Coordenação de Tecnologia e Inovação, Instituto Nacional de Pesquisas da Amazônia, Avenida André Araújo, 2936, Petrópolis, CEP 69067-375 Manaus, Amazonas, Brazil.
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Oliveira DR, Krettli AU, Aguiar ACC, Leitão GG, Vieira MN, Martins KS, Leitão SG. Ethnopharmacological evaluation of medicinal plants used against malaria by quilombola communities from Oriximiná, Brazil. JOURNAL OF ETHNOPHARMACOLOGY 2015; 173:424-34. [PMID: 26231451 DOI: 10.1016/j.jep.2015.07.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 07/10/2015] [Accepted: 07/24/2015] [Indexed: 05/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Malaria is the most important parasitic disease in the world, including in the Amazon region, due to its high incidence. In addition, malaria is difficult to control because of the geographical characteristics of the endemic Amazon region. The quilombola communities of Oriximina, located in remote rainforest areas, have extensive experience with medicinal plants due to their close contact with and dependence on local biodiversity as a therapeutic resource. To search for active bioproducts against malaria, based on in vitro tests using blood culture-derived parasites and plants selected by an ethno-directed approach in traditional quilombola communities of Oriximiná, in the Amazon region of Brazil. MATERIALS AND METHODS Ethnobotanical data were collected from 35 informants in the quilombola communities of Oriximiná, Brazil, by a free-listing method for the survey of species locally indicated to be effective against malaria and related symptoms. Data were analyzed by salience index (S) and major use agreement. The activity of extracts from 11 plants, selected based on their Salience values (four plants with S>1; seven plants with S<0.1), was measured in vitro in cultures of W2 clone Plasmodium falciparum parasites resistant to chloroquine. RESULTS Thirty-five ethnospecies comprising 40 different plants belonging to 23 botanical families and 37 genera were listed as antimalarials by the ethno-directed approach. Among these, 11 species selected based on their S values were assayed against P. falciparum. The most active plant extracts, with an IC50 as low as 1.6μg/mL, were obtained from Aspidosperma rigidum (Apocynaceae), Bertholletia excelsa (Lecythidaceae) and Simaba cedron (Simaroubaceae), all of which displayed an S value>1. CONCLUSION A strong correlation between the consensus of the informants from quilombola communities living in a malaria endemic area and the salience index indicating antiplasmodial activity was observed, where the ethnospecies mostly cited to be effective against malaria produced the most active plant extracts in vitro. It was also evident from the data that these groups approached the treatment of malaria with an holistic view, making use of purgative, depurative, emetic and adaptogen plants.
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Affiliation(s)
- Danilo R Oliveira
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, CCS, Bloco A 2° andar, Ilha do Fundão, 21941-590 Rio de Janeiro, RJ, Brazil.
| | - Antoniana U Krettli
- Centro de Pesquisas René Rachou, Laboratório de Malaria, FIOCRUZ, Av. Augusto de Lima, 1715, Barro Preto, 30190-002 Belo Horizonte, MG, Brazil; Faculty of Medicine, Av. Alfredo Balena, Pós Graduação em Medicina Molecular, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Anna Caroline C Aguiar
- Centro de Pesquisas René Rachou, Laboratório de Malaria, FIOCRUZ, Av. Augusto de Lima, 1715, Barro Preto, 30190-002 Belo Horizonte, MG, Brazil; Faculty of Medicine, Av. Alfredo Balena, Pós Graduação em Medicina Molecular, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Gilda G Leitão
- Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro, CCS, Bloco H, Ilha do Fundão, 21941-590 Rio de Janeiro, RJ, Brazil
| | - Mariana N Vieira
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, CCS, Bloco A 2° andar, Ilha do Fundão, 21941-590 Rio de Janeiro, RJ, Brazil
| | - Karine S Martins
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, CCS, Bloco A 2° andar, Ilha do Fundão, 21941-590 Rio de Janeiro, RJ, Brazil
| | - Suzana G Leitão
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, CCS, Bloco A 2° andar, Ilha do Fundão, 21941-590 Rio de Janeiro, RJ, Brazil
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26
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Pimenta PFP, Orfano AS, Bahia AC, Duarte APM, Ríos-Velásquez CM, Melo FF, Pessoa FAC, Oliveira GA, Campos KMM, Villegas LM, Rodrigues NB, Nacif-Pimenta R, Simões RC, Monteiro WM, Amino R, Traub-Cseko YM, Lima JBP, Barbosa MGV, Lacerda MVG, Tadei WP, Secundino NFC. An overview of malaria transmission from the perspective of Amazon Anopheles vectors. Mem Inst Oswaldo Cruz 2015; 110:23-47. [PMID: 25742262 PMCID: PMC4371216 DOI: 10.1590/0074-02760140266] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Accepted: 12/18/2014] [Indexed: 02/07/2023] Open
Abstract
In the Americas, areas with a high risk of malaria transmission are mainly located in the Amazon Forest, which extends across nine countries. One keystone step to understanding the Plasmodium life cycle in Anopheles species from the Amazon Region is to obtain experimentally infected mosquito vectors. Several attempts to colonise Anopheles species have been conducted, but with only short-lived success or no success at all. In this review, we review the literature on malaria transmission from the perspective of its Amazon vectors. Currently, it is possible to develop experimental Plasmodium vivax infection of the colonised and field-captured vectors in laboratories located close to Amazonian endemic areas. We are also reviewing studies related to the immune response to P. vivax infection of Anopheles aquasalis, a coastal mosquito species. Finally, we discuss the importance of the modulation of Plasmodium infection by the vector microbiota and also consider the anopheline genomes. The establishment of experimental mosquito infections with Plasmodium falciparum, Plasmodium yoelii and Plasmodium berghei parasites that could provide interesting models for studying malaria in the Amazonian scenario is important. Understanding the molecular mechanisms involved in the development of the parasites in New World vectors is crucial in order to better determine the interaction process and vectorial competence.
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Affiliation(s)
- Paulo FP Pimenta
- Centro de Pesquisas René Rachou-Fiocruz, Belo Horizonte, MG,
Brasil
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
| | | | - Ana C Bahia
- Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Ana PM Duarte
- Centro de Pesquisas René Rachou-Fiocruz, Belo Horizonte, MG,
Brasil
| | | | - Fabrício F Melo
- Centro de Pesquisas René Rachou-Fiocruz, Belo Horizonte, MG,
Brasil
| | | | | | - Keillen MM Campos
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
| | | | | | | | - Rejane C Simões
- Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil
| | - Wuelton M Monteiro
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
| | - Rogerio Amino
- Unité de Biologie et Génétique du Paludisme, Institut Pasteur, Paris,
France
| | | | - José BP Lima
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
- Instituto Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Maria GV Barbosa
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
| | - Marcus VG Lacerda
- Fundação de Medicina Tropical Dr Heitor Vieira Dourado, Manaus, AM,
Brasil
- Instituto Leônidas e Maria Deane-Fiocruz, Manaus, AM, Brasil
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Coutinho JP, Aguiar ACC, dos Santos PA, Lima JC, Rocha MGL, Zani CL, Alves TMA, Santana AEG, Pereira MDM, Krettli AU. Aspidosperma (Apocynaceae) plant cytotoxicity and activity towards malaria parasites. Part I: Aspidosperma nitidum (Benth) used as a remedy to treat fever and malaria in the Amazon. Mem Inst Oswaldo Cruz 2015; 108:974-82. [PMID: 24402150 PMCID: PMC4005553 DOI: 10.1590/0074-0276130246] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Accepted: 10/17/2013] [Indexed: 11/22/2022] Open
Abstract
Infusions of Aspidosperma nitidum (Apocynaceae) wood bark are used
to treat fever and malaria in the Amazon Region. Several species of this family are
known to possess indole alkaloids and other classes of secondary metabolites, whereas
terpenoids, an inositol and the indole alkaloids harmane-3 acid and braznitidumine
have been described in A. nitidum . In the present study, extracts
from the wood bark, leaves and branches of this species were prepared for assays
against malaria parasites and cytotoxicity testing using human hepatoma and normal
monkey kidney cells. The wood bark extracts were active against Plasmodium
falciparum and showed a low cytotoxicity in vitro, whereas the leaf and
branch extracts and the pure alkaloid braznitidumine were inactive. A crude methanol
extract was subjected to acid-base fractionation aimed at obtaining alkaloid-rich
fractions, which were active at low concentrations against P.
falciparum and in mice infected with and sensitive Plasmodium
berghei parasites. Our data validate the antimalarial usefulness of
A. nitidum wood bark, a remedy that can most likely help to
control malaria. However, the molecules responsible for this antimalarial activity
have not yet been identified. Considering their high selectivity index, the
alkaloid-rich fractions from the plant bark might be useful in the development of new
antimalarials.
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Affiliation(s)
| | | | | | - Joaquim Corsino Lima
- Departamento de Farmacologia, Universidade Federal do Mato Grosso, Brasil, CuiabáMT
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Silva LFRE, Lima ES, Vasconcellos MCD, Aranha ESP, Costa DS, Mustafa EV, Morais SKRD, Alecrim MDGC, Nunomura SM, Struwe L, de Andrade-Neto VF, Pohlit AM. In vitro and in vivo antimalarial activity and cytotoxicity of extracts, fractions and a substance isolated from the Amazonian plant Tachia grandiflora (Gentianaceae). Mem Inst Oswaldo Cruz 2014; 108:501-7. [PMID: 23827996 DOI: 10.1590/s0074-02762013000400017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 03/26/2013] [Indexed: 11/22/2022] Open
Abstract
Tachia sp. are used as antimalarials in the Amazon Region and in vivo antimalarial activity of a Tachia sp. has been previously reported. Tachia grandiflora Maguire and Weaver is an Amazonian antimalarial plant and herein its cytotoxicity and antimalarial activity were investigated. Spectral analysis of the tetraoxygenated xanthone decussatin and the iridoid aglyone amplexine isolated, respectively, from the chloroform fractions of root methanol and leaf ethanol extracts was performed. In vitro inhibition of the growth of Plasmodium falciparum Welch was evaluated using optical microscopy on blood smears. Crude extracts of leaves and roots were inactive in vitro. However, chloroform fractions of the root and leaf extracts [half-maximal inhibitory concentration (IC50) = 10.5 and 35.8 µg/mL, respectively] and amplexine (IC50= 7.1 µg/mL) were active in vitro. Extracts and fractions were not toxic to type MRC-5 human fibroblasts (IC50> 50 µg/mL). Water extracts of the roots of T. grandiflora administered by mouth were the most active extracts in the Peters 4-day suppression test in Plasmodium berghei-infected mice. At 500 mg/kg/day, these extracts exhibited 45-59% inhibition five to seven days after infection. T. grandiflora infusions, fractions and isolated substance have potential as antimalarials.
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Affiliation(s)
- Luiz Francisco Rocha e Silva
- Laboratório de Princípios Ativos da Amazônia, Coordenação de Tecnologia e Inovação, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil
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Botanical, Pharmacological, Phytochemical, and Toxicological Aspects of the Antidiabetic Plant Bidens pilosa L. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:698617. [PMID: 24616740 PMCID: PMC3926223 DOI: 10.1155/2014/698617] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 11/27/2013] [Indexed: 12/03/2022]
Abstract
Bidens pilosa L. is an easy-to-grow, widespread, and palatable perennial on earth. Hence, it has traditionally been used as foods and medicines without noticeable adverse effects. Despite significant advancement in chemical and biological studies of B. pilosa over the past few years, comprehensive and critical reviews on its anti-diabetic properties are missing. The present review is to summarize up-to-date information on the pharmacology, phytochemistry, and toxicology of B. pilosa, in regard to type 1 diabetes and type 2 diabetes from the literature. In addition to botanical studies and records of the traditional use of B. pilosa in diabetes, scientific studies investigating antidiabetic action of this species and its active phytochemicals are presented and discussed. The structure and biosynthesis of B. pilosa and its polyynes in relation to their anti-diabetic action and mechanism are emphasized. Although some progress has been made, rigorous efforts are further required to unlock the molecular basis and structure-activity relationship of the polyynes isolated from B. pilosa before their clinical applications. The present review provides preliminary information and gives guidance for further anti-diabetic research and development of this plant.
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Bidens pilosa L. (Asteraceae): Botanical Properties, Traditional Uses, Phytochemistry, and Pharmacology. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:340215. [PMID: 23935661 PMCID: PMC3712223 DOI: 10.1155/2013/340215] [Citation(s) in RCA: 98] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Accepted: 04/29/2013] [Indexed: 11/17/2022]
Abstract
There are 230 to 240 known Bidens species. Among them, Bidens pilosa is a representative perennial herb, globally distributed across temperate and tropical regions. B. pilosa has been traditionally used in foods and medicines without obvious adverse effects. Despite significant progress in phytochemical and biological analyses of B. pilosa over the past few years, comprehensive and critical reviews of this plant are anachronistic or relatively limited in scope. The present review aims to summarize up-to-date information on the phytochemistry, pharmacology, and toxicology of B. pilosa from the literature. In addition to botanical studies and records of the traditional use of B. pilosa in over 40 diseases, scientific studies investigating the potential medicinal uses of this species and its constituent phytochemicals for a variety of disorders are presented and discussed. The structure, bioactivity, and likely mechanisms of action of B. pilosa and its phytochemicals are emphasized. Although some progress has been made, further rigorous efforts are required to investigate the individual compounds isolated from B. pilosa to understand and validate its traditional uses and develop clinical applications. The present review provides preliminary information and gives guidance for further basic and clinical research into this plant.
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Karunamoorthi K, Sabesan S, Jegajeevanram K, Vijayalakshmi J. Role of traditional antimalarial plants in the battle against the global malaria burden. Vector Borne Zoonotic Dis 2013; 13:521-44. [PMID: 23930972 DOI: 10.1089/vbz.2011.0946] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Malaria continues to be a major global public health problem with 3.3 billion people at risk in 106 endemic countries. Globally, over 1000 plants have been used as potential antimalarials in resource-poor settings due to fragile health-care systems and lack of accessibility and affordability of artemisinin-based combination therapies (ACTs). Although many believe that the use of medicinal plants that have folklore reputations for antimalarial properties is relatively safe, many herbs may be potentially toxic due to their intrinsic adverse side effects. Therefore, herbal-derived remedies require powerful and deep assessment of their pharmacological qualities to establish their mode of action, safety, quality, and efficacy. In addition, the evolution of drug resistance also demands new antimalarial agents. This can be achieved by forming a vibrant antimalarial discovery pipeline among all stakeholders, including traditional healers, ethnobotanists, scientists, entomologists, pharmacists, and research institutions, for the isolation and characterization of the bioactive compounds with the ultimate objective of finding novel modes of action antimalarial compounds that can be used to fight against drug-resistant malarial parasites.
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Affiliation(s)
- Kaliyaperumal Karunamoorthi
- Department of Environmental Health Science & Technology, College of Public Health and Medical Sciences, Jimma University, Jimma, Ethiopia.
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Immunobiologic and antiinflammatory properties of a bark extract from Ampelozizyphus amazonicus Ducke. BIOMED RESEARCH INTERNATIONAL 2013; 2013:451679. [PMID: 23555087 PMCID: PMC3600244 DOI: 10.1155/2013/451679] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Revised: 12/28/2012] [Accepted: 12/29/2012] [Indexed: 01/17/2023]
Abstract
Ampelozizyphus amazonicus is used in the treatment and prevention of malaria. The effect of an aqueous extract from this plant (SART) on the immune response was investigated by measuring immunoglobulin production induced by immunization with the antigen TNP-Ficoll in Plasmodium chabaudi-infected mice. SART treatment increased antigen-specific IgM and IgG levels in TNP-Ficoll-immunized mice. The B cell response during malarial infection was also modified by SART. There was an increase in total serum IgM and IgG and a decrease in the percentage of splenic plasma cells (CD138+ cells) in P. chabaudi-infected, SART-treated animals. SART (1, 3 or 10 mg/kg, p.o.) and the reference drug dexamethasone (5 mg/kg) were also tested in carrageenan-induced leukocyte migration to the subcutaneous air pouch (SAP). All SART doses significantly reduced leukocyte migration into the SAP. The protein concentration resulting from extravasation into the peritoneum was also significantly reduced. Our data indicate that SART possesses immunomodulatory properties, inducing an in vivo modification of the B lymphocyte response and anti-inflammatory properties, which are partly due to a reduction in cell migration and are most likely due to an inhibition of the production of inflammatory mediators. Preliminary HPLC-ESI-MS/MS analysis of SART shows a complex saponin profile with deprotonated molecule [M-H]− ions in the range of m/z 800–1000.
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de Macchi BM, Miranda FJB, de Souza FS, de Carvalho ECQ, Albernaz AP, do Nascimento JLM, DaMatta RA. Chickens treated with a nitric oxide inhibitor became more resistant to Plasmodium gallinaceum infection due to reduced anemia, thrombocytopenia and inflammation. Vet Res 2013; 44:8. [PMID: 23398940 PMCID: PMC3582474 DOI: 10.1186/1297-9716-44-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Accepted: 02/05/2013] [Indexed: 02/04/2023] Open
Abstract
Malaria is a serious infectious disease caused by parasites of the Plasmodium genus that affect different vertebrate hosts. Severe malaria leads to host death and involves different pathophysiological phenomena such as anemia, thrombocytopenia and inflammation. Nitric oxide (NO) is an important effector molecule in this disease, but little is known about its role in avian malaria models. Plasmodium gallinaceum-infected chickens were treated with aminoguanidine (AG), an inhibitor of inducible nitric oxide synthase, to observe the role of NO in the pathogenesis of this avian model. AG increased the survival of chickens, but also induced higher parasitemia. Treated chickens demonstrated reduced anemia and thrombocytopenia. Moreover, erythrocytes at different stages of maturation, heterophils, monocytes and thrombocytes were infected by Plasmodium gallinaceum and animals presented a generalized leucopenia. Activated leukocytes and thrombocytes with elongated double nuclei were observed in chickens with higher parasitemia; however, eosinophils were not involved in the infection. AG reduced levels of hemozoin in the spleen and liver, indicating lower inflammation. Taken together, the results suggest that AG reduced anemia, thrombocytopenia and inflammation, explaining the greater survival rate of the treated chickens.
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Affiliation(s)
- Barbarella Matos de Macchi
- Laboratório de Biologia Celular e Tecidual, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense, 28013-602, Campos dos Goytacazes, RJ, Brazil.
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Aguiar ACC, Rocha EMMD, Souza NBD, França TCC, Krettli AU. New approaches in antimalarial drug discovery and development: a review. Mem Inst Oswaldo Cruz 2012; 107:831-45. [DOI: 10.1590/s0074-02762012000700001] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2012] [Accepted: 08/16/2012] [Indexed: 01/22/2023] Open
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Braga EM, Silveira P, Belo NO, Valkiūnas G. Recent advances in the study of avian malaria: an overview with an emphasis on the distribution of Plasmodium spp in Brazil. Mem Inst Oswaldo Cruz 2012; 106 Suppl 1:3-11. [PMID: 21881752 DOI: 10.1590/s0074-02762011000900002] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2011] [Accepted: 06/07/2011] [Indexed: 11/22/2022] Open
Abstract
Avian malaria parasites (Plasmodium) have a worldwide distribution except for Antarctica. They are transmitted exclusively by mosquito vectors (Diptera: Culicidae) and are of particular interest to health care research due to their phylogenetic relationship with human plasmodia and their ability to cause avian malaria, which is frequently lethal in non-adapted avian hosts. However, different features of avian Plasmodium spp, including their taxonomy and aspects of their life-history traits, need to be examined in more detail. Over the last 10 years, ecologists, evolutionary biologists and wildlife researchers have recognized the importance of studying avian malaria parasites and other related haemosporidians, which are the largest group of the order Haemosporida by number of species. These studies have included understanding the ecological, behavioral and evolutionary aspects that arise in this wildlife host-parasite system. Molecular tools have provided new and exiting opportunities for such research. This review discusses several emerging topics related to the current research of avian Plasmodium spp and some related avian haemosporidians. We also summarize some important discoveries in this field and emphasize the value of using both polymerase chain reaction-based and microscopy-based methods in parallel for wildlife studies. We will focus on the genus Plasmodium, with an emphasis on the distribution and pathogenicity of these parasites in wild birds in Brazil.
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Affiliation(s)
- Erika Martins Braga
- Departamento de Parasitologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.
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Mesfin A, Giday M, Animut A, Teklehaymanot T. Ethnobotanical study of antimalarial plants in Shinile District, Somali Region, Ethiopia, and in vivo evaluation of selected ones against Plasmodium berghei. JOURNAL OF ETHNOPHARMACOLOGY 2012; 139:221-227. [PMID: 22101085 DOI: 10.1016/j.jep.2011.11.006] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 10/21/2011] [Accepted: 11/02/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The study documented medicinal plants that are traditionally used for treatment of malaria in Shinile District, eastern Ethiopia, and evaluated selected medicinal plants for their antiplasmodial activities against Plasmodium berghei. MATERIALS AND METHODS The study was conducted in four kebeles of Shinile District, Somali Region, Ethiopia. A total of 15 traditional healers were sampled based on recommendations of local elders and administrators. Specimens of the reported antimalarial plants were collected and stored at the Mini Herbarium of the Aklilu Lemma Institute of Pathobiology, Addis Ababa University, following identification. Crude aqueous and ethanol extracts of Aloe sp., Azadirachta indica and Tamarindus indica were tested in vivo against Plasmodium berghei. The three plants were selected based on the frequency antimalarial use report by healers. RESULTS The study revealed 27 antimalarial plants, the majority of which were harvested from the wild. Root was the most frequently sought plant part. Most of the remedies were used in decoction form. Aloe sp., Azadirachta indica and Tamarindus indica were the most commonly reported plants for their antimalarial use. For the in vivo test, all the plant extracts were given to mice orally. Ethanol and aqueous leaf extracts of Aloe sp. caused 73.94% and 58.10% parasitaemia suppression, respectively at dose of 650 mg/kg. Ethanol extract of Azadirachta indica leaves induced 54.79% parasitaemia suppression at the dose of 650 mg/kg and its water extract induced 21.47% parasite suppression at a similar dose. Water extract of the fruits of Tamarindus indica showed the highest parasitaemia suppression (81.09%) at the dose of 650 mg/kg. Most Plasmodium berghei infected mice treated with high dose of plant extracts survived relatively longer compared to their respective controls although the difference was not significant. CONCLUSIONS The result of this study may support the traditional use of Aloe sp., Azadirachta indica and Tamarindus indica in the study area against malaria. Results of this study can be used as a basis for further phytochemical and pharmacological investigations in the effort for search of new and locally affordable antimalarial agents.
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Affiliation(s)
- Akalu Mesfin
- Department of Life Sciences, Dire Dawa University, Dire Dawa, Ethiopia
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Silva JRDA, Ramos ADS, Machado M, Moura DFD, Zoraima Neto, Canto-Cavalheiro MM, Figueiredo P, Rosário VED, Amaral ACF, Lopes D. A review of antimalarial plants used in traditional medicine in communities in Portuguese-Speaking countries: Brazil, Mozambique, Cape Verde, Guinea-Bissau, São Tomé and Príncipe and Angola. Mem Inst Oswaldo Cruz 2011; 106 Suppl 1:142-58. [PMID: 21881769 DOI: 10.1590/s0074-02762011000900019] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Accepted: 07/26/2011] [Indexed: 11/22/2022] Open
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Willcox M, Benoit-Vical F, Fowler D, Bourdy G, Burford G, Giani S, Graziose R, Houghton P, Randrianarivelojosia M, Rasoanaivo P. Do ethnobotanical and laboratory data predict clinical safety and efficacy of anti-malarial plants? Malar J 2011; 10 Suppl 1:S7. [PMID: 21411018 PMCID: PMC3059465 DOI: 10.1186/1475-2875-10-s1-s7] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Background Over 1200 plant species are reported in ethnobotanical studies for the treatment of malaria and fevers, so it is important to prioritize plants for further development of anti-malarials. Methods The “RITAM score” was designed to combine information from systematic literature searches of published ethnobotanical studies and laboratory pharmacological studies of efficacy and safety, in order to prioritize plants for further research. It was evaluated by correlating it with the results of clinical trials. Results and discussion The laboratory efficacy score correlated with clinical parasite clearance (rs=0.7). The ethnobotanical component correlated weakly with clinical symptom clearance but not with parasite clearance. The safety component was difficult to validate as all plants entering clinical trials were generally considered safe, so there was no clinical data on toxic plants. Conclusion The RITAM score (especially the efficacy and safety components) can be used as part of the selection process for prioritising plants for further research as anti-malarial drug candidates. The validation in this study was limited by the very small number of available clinical studies, and the heterogeneity of patients included.
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Affiliation(s)
- Merlin Willcox
- Research Initiative on Traditional Antimalarial Methods, 66 Lye Valley, Oxford OX3 7ER, UK.
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Investigation of some medicinal plants traditionally used for treatment of malaria in Kenya as potential sources of antimalarial drugs. Exp Parasitol 2011; 127:609-26. [DOI: 10.1016/j.exppara.2010.11.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2010] [Revised: 11/01/2010] [Accepted: 11/09/2010] [Indexed: 11/23/2022]
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Compilation of secondary metabolites from Bidens pilosa L. Molecules 2011; 16:1070-102. [PMID: 21270729 PMCID: PMC6259624 DOI: 10.3390/molecules16021070] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2010] [Revised: 01/13/2011] [Accepted: 01/24/2011] [Indexed: 11/16/2022] Open
Abstract
Bidens pilosa L. is a cosmopolitan annual herb, known for its traditional use in treating various diseases and thus much studied for the biological activity of its extracts, fractions and isolated compounds. Polyacetylenes and flavonoids, typical metabolite classes in the Bidens genus, predominate in the phytochemistry of B. pilosa. These classes of compounds have great taxonomic significance. In the Asteraceae family, the acetylene moiety is widely distributed in the Heliantheae tribe and some representatives, such as 1-phenylhepta-1,3,5-triyne, are noted for their biological activity and strong long-wave UV radiation absorbance. The flavonoids, specifically aurones and chalcones, have been reported as good sub-tribal level markers. Natural products from several other classes have also been isolated from different parts of B. pilosa. This review summarizes the available information on the 198 natural products isolated to date from B. pilosa.
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Rocha Martins LR, Brenzan MA, Nakamura CV, Dias Filho BP, Nakamura TU, Ranieri Cortez LE, Garcia Cortez DA. In vitro antiviral activity from Acanthospermum australe on herpesvirus and poliovirus. PHARMACEUTICAL BIOLOGY 2011; 49:26-31. [PMID: 20819023 DOI: 10.3109/13880209.2010.493177] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
CONTEXT The Asteraceae family has been of interest to researchers due to the presence of polyphenolic compounds, mainly flavonoids, which demonstrated antiviral activity. OBJECTIVE The hydroethanol extract of the aerial parts of Acanthospermum australe (Loefl.) Kuntze (Asteraceae) and its fractions, were evaluated in vitro for their potential cytotoxic and antiviral activity against bovine herpesvirus and human poliovirus. MATERIALS AND METHODS The sulforhodamine B colorimetric assay were used to evaluate the capacity of the hydroethanol extract and fractions to inhibit the lytic activity of herpes and poliovirus in infected cell cultures and their influence on the viability of uninfected cell cultures. RESULTS AND DISCUSSION A progressive increase in the antiviral effect against herpesvirus was observed in the course of the purification process of the extract. The hydroethanol extract had a 50% antiviral effective concentration (EC(50)) at 70 μg/mL and 36 μg/mL for herpes and poliovirus, respectively, and it exhibited no cytotoxicity. The fractions F3 (dichloromethane) and F4 (dichloromethane: ethyl acetate (1:1 v/v)) both showed EC(50) at 6.25 μg/mL against herpesvirus, and these fractions showed cytotoxic concentrations (CC(50)) at 12.7 and 11.7 μg/mL, respectively. These fractions had no effect against poliovirus in the concentrations tested. From the bioactive F3, a diterpene lactone (acanthoaustralide-1-O-acetate) was isolated at a concentration of 0.5% and from F4 two flavonoids (quercetin and chrysosplenol D) were isolated at concentrations of 0.14 and 0.24%, respectively. CONCLUSION The present study reports for the first time the antiviral activity of extracts and fractions from A. australe aerial parts.
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Chrubasik C, Jacobson RL. The development of artemisinin resistance in malaria: reasons and solutions. Phytother Res 2010; 24:1104-6. [PMID: 20578122 DOI: 10.1002/ptr.3133] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Despite world-wide efforts in fighting malaria, this mosquito-borne infectious disease is a huge burden for the population, especially in tropical and subtropical areas. The WHO recommends artemisinin-based combination therapy for the treatment of uncomplicated Plasmodium falciparum malaria. However, artemisinin resistance cannot now be ignored. Factors affecting the development of artemisinin resistance include uncontrolled use of artemisinin-based combination therapy (ACT), mobile populations and migrants, artemisinin monotherapy, the use of subtherapeutic levels of artesiminin, substandard and counterfeit drugs, high treatment cost, and co-use of artemisinin derivates as prophylactic agents. Promising herbal alternatives are already in the pipeline, but the only long-term solution for eradicating malaria would be the development of a successful vaccination.
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de Matos Macchi B, Quaresma JAS, Herculano AM, Crespo-López ME, DaMatta RA, do Nascimento JLM. Pathogenic action of Plasmodium gallinaceum in chickens: Brain histology and nitric oxide production by blood monocyte-derived macrophages. Vet Parasitol 2010; 172:16-22. [DOI: 10.1016/j.vetpar.2010.04.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2009] [Revised: 04/13/2010] [Accepted: 04/27/2010] [Indexed: 11/29/2022]
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Santos-Magalhães NS, Mosqueira VCF. Nanotechnology applied to the treatment of malaria. Adv Drug Deliv Rev 2010; 62:560-75. [PMID: 19914313 DOI: 10.1016/j.addr.2009.11.024] [Citation(s) in RCA: 152] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/14/2009] [Indexed: 12/24/2022]
Abstract
Despite the fact that we live in an era of advanced technology and innovation, infectious diseases, like malaria, continue to be one of the greatest health challenges worldwide. The main drawbacks of conventional malaria chemotherapy are the development of multiple drug resistance and the non-specific targeting to intracellular parasites, resulting in high dose requirements and subsequent intolerable toxicity. Nanosized carriers have been receiving special attention with the aim of minimizing the side effects of drug therapy, such as poor bioavailability and the selectivity of drugs. Several nanosized delivery systems have already proved their effectiveness in animal models for the treatment and prophylaxis of malaria. A number of strategies to deliver antimalarials using nanocarriers and the mechanisms that facilitate their targeting to Plasmodium spp.-infected cells are discussed in this review. Taking into account the peculiarities of malaria parasites, the focus is placed particularly on lipid-based (e.g., liposomes, solid lipid nanoparticles and nano and microemulsions) and polymer-based nanocarriers (nanocapsules and nanospheres). This review emphasizes the main requirements for developing new nanotechnology-based carriers as a promising choice in malaria treatment, especially in the case of severe cerebral malaria.
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Oliveira AB, Dolabela MF, Braga FC, Jácome RLRP, Varotti FP, Póvoa MM. Plant-derived antimalarial agents: new leads and efficient phythomedicines. Part I. Alkaloids. AN ACAD BRAS CIENC 2010; 81:715-40. [PMID: 19893898 DOI: 10.1590/s0001-37652009000400011] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2009] [Accepted: 07/09/2009] [Indexed: 11/22/2022] Open
Abstract
Malaria remains one of the most serious world health problem and the major cause of mortality and morbidity in the endemic regions. Brazil is among the 30 high-burden countries and most of the cases occur in the Legal Amazonian Region. New chemotherapeutical agents are needed for the treatment of malaria. Many plant species are used in traditional medicines of malarious countries and a relatively few number of these have been investigated for evaluation of their antimalarial effect. Still lower is the number of those that have had the active natural compounds isolated and the toxicity determined. This area is, then, of great research interest. discovery project of antimalarial natural products from plants traditionally used to treat malaria must include in vitro and in vivo assays as well as bioguided isolation of active compounds. The final products would be antimalarial chemical entities, potential new drugs or templates for new drugs development, and/or standardized antimalarial extracts which are required for pre-clinical and clinical studies when the aim is the development of effective and safe phythomedicines. This review discusses these two approaches, presents briefly the screening methodologies for evaluation of antimalarial activity and focuses the activity of alkaloids belonging to different structural classes as well as its importance as new antimalarial drugs or leads and chemical markers for phytomedicines.
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Affiliation(s)
- Alaíde B Oliveira
- Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.
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Ayuko TA, Njau RN, Cornelius W, Leah N, Ndiege IO. In vitro antiplasmodial activity and toxicity assessment of plant extracts used in traditional malaria therapy in the Lake Victoria Region. Mem Inst Oswaldo Cruz 2010; 104:689-94. [PMID: 19820826 DOI: 10.1590/s0074-02762009000500004] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2008] [Accepted: 07/28/2009] [Indexed: 11/21/2022] Open
Abstract
As part of our program screening the flora of the Lake Victoria Region, a total of 54 organic extracts from seven plant families (8 species) were individually tested for antiplasmodial activity against chloroquine-sensitive [Sierra Leone (D-6)] and chloroquine-resistant [Vietnam (W-2)] strains. Only 22% of these extracts exhibited very high in vitro antiplasmodial activity. Six methanol (MeOH) extracts and one chloroform extract showed in vitro antiplasmodial activity against the D-6 Plasmodium falciparum strain, while only three MeOH extracts were active against the W-2 strain. All of the ethyl acetate extracts proved to be inactive against both strains of P. falciparum. A brine shrimp cytotoxicity assay was used to predict the potential toxicity of the extracts. The cytotoxicity to antiplasmodial ratios for the MeOH extracts were found to be greater than 100, which could indicate that the extracts are of low toxicity.
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Affiliation(s)
- Teresa Akeng'a Ayuko
- Department of Applied Chemistry, Kigali Institute of Science and Technology, Kigali, Rwanda.
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Vashist U, Carvalhaes R, D’agosto M, da Silva AD. Antimalarial Activity of the Novel Quinoline/6-Thiopurine Conjugate inGallus gallusLinnaeus, Infected Experimentally byPlasmodium(Novyella)juxtanucleare. Chem Biol Drug Des 2009; 74:434-7. [DOI: 10.1111/j.1747-0285.2009.00877.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Mishra K, Dash AP, Swain BK, Dey N. Anti-malarial activities of Andrographis paniculata and Hedyotis corymbosa extracts and their combination with curcumin. Malar J 2009; 8:26. [PMID: 19216765 PMCID: PMC2650700 DOI: 10.1186/1475-2875-8-26] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2008] [Accepted: 02/12/2009] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Herbal extracts of Andrographis paniculata (AP) and Hedyotis corymbosa (HC) are known as hepato-protective and fever-reducing drugs since ancient time and they have been used regularly by the people in the south Asian sub-continent. Methanolic extracts of these two plants were tested in vitro on choloroquine sensitive (MRC-pf-20) and resistant (MRC-pf-303) strains of Plasmodium falciparum for their anti-malarial activity. METHODS Growth inhibition was determined using different concentrations of these plant extracts on synchronized P. falciparum cultures at the ring stage. The interactions between these two plant extracts and individually with curcumin were studied in vitro. The performance of these two herbal extracts in isolation and combination were further evaluated in vivo on Balb/c mice infected with Plasmodium berghei ANKA and their efficacy was compared with that of curcumin. The in vivo toxicity of the plant derived compounds as well as their parasite stage-specificity was studied. RESULTS The 50% inhibitory concentration (IC50) of AP (7.2 microg/ml) was found better than HC (10.8 microg/ml). Combination of these two herbal drugs showed substantial enhancement in their anti-malarial activity. Combinatorial effect of each of these with curcumin also revealed anti-malarial effect. Additive interaction between the plant extracts (AP + HC) and their individual synergism with curcumin (AP+CUR, HC+CUR) were evident from this study. Increased in vivo potency was also observed with the combination of plant extracts over the individual extracts and curcumin. Both the plant extracts were found to inhibit the ring stage of the parasite and did not show any in vivo toxicity, whether used in isolation or in combination. CONCLUSION Both these two plant extracts in combination with curcumin could be an effective, alternative source of herbal anti-malarial drugs.
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Affiliation(s)
- Kirti Mishra
- Institute of Life Sciences, Nalco Square, Chandrasekhar Pur, Bhubaneswar, Orissa, India.
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Krettli AU. Antimalarial drug discovery: screening of Brazilian medicinal plants and purified compounds. Expert Opin Drug Discov 2009; 4:95-108. [DOI: 10.1517/17530050802678127] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Andrade-Neto V, Brandão M, Nogueira F, Rosário V, Krettli A. Ampelozyziphus amazonicus Ducke (Rhamnaceae), a medicinal plant used to prevent malaria in the Amazon Region, hampers the development of Plasmodium berghei sporozoites. Int J Parasitol 2008; 38:1505-11. [DOI: 10.1016/j.ijpara.2008.05.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2008] [Revised: 04/15/2008] [Accepted: 05/06/2008] [Indexed: 10/22/2022]
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