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      Preliminary phytochemical and antileishmanial studies of the ethanolic extracts of Pterodon pudescens Translated title: Estudos preliminares sobre a fitoquimica e a atividade anti-leishmania de extratos etanólicos de Pterodon pudescens

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          Abstract

          Pentavalent antimonials are the first choice for the treatment of human leishmaniasis. However in rural areas the traditional plants may be preferred for the treatment of lesions. In recent years a number of papers are published related to the natural products especially plant derivative with infectious diseases. The present work was undertaken to evaluate the antileishmanial activity of Pterodon pubescens which is a native tree widely distributed over the central region of Brazil and used in folk medicine as wine infusions to treat inflammatory disease. The phytochemical screening and the biological essay of ethanolic extract of Pterodon pudescens (PPE) leaves at the concentrations of 150, 300, 450, 600 µg/ml were tested in vitro in Leishmania amazonensis-infected macrophages to support its traditional medicinal use as a leishmaniasis remedy. Phytochemical screening of PPE has shown the presence of catechemical tannins, steroids, triterpenoids and flavonoids. The biological test suggests that PPE were found to control parasite burden of cell cultures in dose-dependent manner. These findings highlight the fact that the apparent potency of Pterodon pudescens compounds, together with their widely distribution over Latin America and Brazil, may represent a promising antileishmanial agent.

          Translated abstract

          Antimoniais pentavalentes são a primeira escolha para o tratamento das leishmanioses humanas. No entanto, no interior brasileiro plantas tradicionais são usadas para o tratamento dessas lesões. De fato, recentes trabalhos tem relatado o potencial terapêutico de produtos naturais, especialmente derivados de plantas. Neste estudo avaliamos a atividade leishmanicida de Pterodon pubescens, uma árvore nativa, distribuída pela região central brasileira e usada em infusões para tratamento de inflamações. Foi realizada a análise fitoquímica e o ensaio in vitro em macrófagos infectados com Leishmania amazonensis em concentrações de 150, 300, 450, 600 µg/ml do extrato etanólico de folhas de Pterodon pudescens (PPE) para comprovar o uso tradicional desta planta como terapia para as leishmanioses. Os testes fitoquímicos indicaram a presença de taninos catequímicos, flavonas, esteroides, triterpenoides, flavonoides e xantonas. Os ensaios biológicos revelaram que o PPE foi capaz de controlar a carga parasitária em macrófagos de maneira dose dependente. Estes resultados corroboram com o potencial terapêutico de compostos de Pterodon pudescens e, junto com sua ampla distribuição no Brasil, podem representar promissor agente leishmanicida.

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          Most cited references17

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          Árvores Brasileiras-Manual de Identificação e Cultivo de Plantas Abóreas Nativas do Brasil

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            Phytochemical methods A guide to modern technique of plant analysis

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              In vitro antiplasmodial activity of antimalarial medicinal plants used in Vietnamese traditional medicine.

              Among 42 extracts, prepared from 14 medicinal plants used in Vietnamese traditional medicine to treat malaria, 24 were found to have antiplasmodial activity by inhibiting the growth of the chloroquine-resistant Plasmodium falciparum strain FCR-3 with EC(50) values less than 10 microg/ml. Each medicinal plant possessed at least one active extract. The methanol extract of Coscinium fenestratum had the strongest antiplasmodial activity with EC(50) value of 0.5 microg/ml. Activity-guided fractionation led to identification of berberine as the major active constituent.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbpm
                Revista Brasileira de Plantas Medicinais
                Rev. bras. plantas med.
                Sociedade Brasileira de Plantas Medicinais (Botucatu )
                1983-084X
                September 2014
                : 16
                : 3
                : 561-565
                Affiliations
                [1 ] Universidade Federal de Mato Grosso Brazil
                [2 ] Universidade Federal de Mato Grosso Brazil
                Article
                S1516-05722014000300013
                10.1590/1983-084X/11_146
                3073536f-f45b-44e5-8de6-cb167c4c785f

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1516-0572&lng=en
                Categories
                PHARMACOLOGY & PHARMACY

                Pharmacology & Pharmaceutical medicine
                Pterodon pubscens,Leishmania amazonensis,Plant extract,Extrato de planta

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