6
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Actividad anti-leishmanial y citotoxicidad de Jatropha gossypifolia L. Translated title: Antileishmanial activity and cytotoxicity of Jatropha gossypifolia L.

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Resumen Introducción: Los extractos acuosos de las hojas de Jatropha gossypifolia L. son utilizados de forma tradicional en el tratamiento de la leishmaniasis. No existen informes concluyentes sobre su efectividad y su citotoxicidad aunque en estudios recientes ha quedado avalada la utilidad de la planta en el tratamiento de la leishmaniasis utilizando otros solventes. Método: Se determinó la actividad leishmanicida y la citotoxicidad de los extractos acuosos e hidroalcohólicos de las hojas de Jatropha gossypifolia L. utilizando el método de fluorescencia de la resazurina en promastigotes de Leishmania amazonensis y macrófagos peritoneales de ratón Balb/c respectivamente. Resultados: Se obtuvieron unas concentraciones inhibitorias 50 de 0,28 µg/mL ± 0,15 µg/mL (n=3) y 0,59 µg/mL ± 0,26 µg/mL (n=3) para el extracto acuoso e hidroalcohólico respectivamente, aunque no se presentó actividad parasiticida a ninguna de las concentraciones evaluadas. De igual manera las concentraciones citotóxicas 50 obtenidas fueron de 0,91 µg/mL ± 0,11 µg/mL (n=3) y 0,57 µg/mL ± 0,12 µg/ml (n=3). Conclusiones: El extracto acuoso resulta ser más eficaz y menos citotóxico frente a los promastigotes de Leishmania amazonensis. Dichos resultados avalan la utilización tópica de los extractos en su formulación tradicional para el tratamiento de la leishmaniosis cutánea.

          Translated abstract

          Abstract Introduction: Aqueous extracts of the leaves of Jatropha gossypifolia L. are traditionally used in the treatment of leishmaniasis. These extracts do not have conclusive reports related to their effectiveness and their cytotoxicity although in recent studies the utility of the plant in the treatment of leishmaniasis using other solvents has been supported. Method: The antileishmanial activity and the cytotoxicity of the aqueous and hydroalcoholic extracts of the leaves of Jatropha gossypifolia L. were determined using the resazurine fluorescence method. Both, promastigotes of Leishmania amazonensis and peritoneal macrophages of Balb/c mouse were studied. Results: The half-maximal inhibitory concentration for the aqueous and hydroalcoholic extract was 0.28 µg/mL ± 0.15 µg/mL (n=3) and 0.59 µg/mL ± 0.26 µg/mL (n=3) respectively, although they did not show parasiticide activity at any of the evaluated concentrations. Similarly, the mean cytotoxic concentrations obtained were 0.91 µg/mL ± 0.11 µg/mL (n=3) and 0.57 µg/mL ± 0.12 µg/ml (n=3). Conclusions: The aqueous extract was more effective and less cytotoxic against Leishmania amazonensis promastigotes. The results obtained support the traditional use of the extracts by topical application in the treatment of cutaneous leishmaniasis.

          Related collections

          Most cited references14

          • Record: found
          • Abstract: found
          • Article: not found

          Development of resazurin microtiter assay for drug sensibility testing of Trypanosoma cruzi epimastigotes.

          A quantitative colorimetric assay using the oxidation-reduction indicator resazurin was developed to measure cytotoxicity of compounds against the protozoan parasite Trypanosoma cruzi. This method is based on the detection of colorimetric changes caused by the oxidation (blue) and reduction (pink) capabilities of resazurin dye, an indicator for metabolic cell function. To validate the assay, the experimental conditions were adjusted, such as number of parasites, dye concentration, and time of incubation, with respect to linearity and lower limit of detection. We found that absorbances increased linearly, with the plating density of parasites as low as 5-100 x 10(4)/well (r=0.99; p<0.001) when they were incubated for 5 h at 28 degrees C in the presence of 10% resazurin solution (3 mM). When the cytotoxicity of the reference drugs nifurtimox and benznidazole was measured with this assay and compared to the microscopic counting method, the same range was obtained, demonstrating that the resazurin microtiter assay is valid for the screening of new trypanocidal compounds. This test is very simple, fast, sensitive, and cheap.
            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Drug cytotoxicity assay for African trypanosomes and Leishmania species.

            The trypanosomes and Leishmania species are parasitic protozoa that afflict millions of people throughout the world. If not treated, African trypanosomiasis and visceral leishmaniasis are fatal. The available drugs are severely limited by toxicity, marginal efficacy, the requirement for parenteral administration, and spreading drug resistance. In this study, a spectrophotometric assay was developed and validated for measuring the cytotoxicity of test compounds against axenically cultured bloodstream-form Trypanosoma brucei (African trypanosomes) and promastigotes of Leishmania donovani. Enzymatic hydrolysis of p-nitrophenyl phosphate, monitored by a microtiter plate reader, is a reliable surrogate for parasite cell counts. The assay is simple, inexpensive, and highly reproducible. The coefficient of variation for EC50 values is < 10% for determinations obtained over several months. This method permits the rapid screening of candidates for much-needed new drugs against these parasites.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: found
              Is Open Access

              Jatropha gossypiifolia L. (Euphorbiaceae): A Review of Traditional Uses, Phytochemistry, Pharmacology, and Toxicology of This Medicinal Plant

              Jatropha gossypiifolia L. (Euphorbiaceae), widely known as “bellyache bush,” is a medicinal plant largely used throughout Africa and America. Several human and veterinary uses in traditional medicine are described for different parts and preparations based on this plant. However, critical reviews discussing emphatically its medicinal value are missing. This review aims to provide an up-to-date overview of the traditional uses, as well as the phytochemistry, pharmacology, and toxicity data of J. gossypiifolia species, in view of discussing its medicinal value and potential application in complementary and alternative medicine. Pharmacological studies have demonstrated significant action of different extracts and/or isolated compounds as antimicrobial, anti-inflammatory, antidiarrheal, antihypertensive, and anticancer agents, among others, supporting some of its popular uses. No clinical trial has been detected to date. Further studies are necessary to assay important folk uses, as well as to find new bioactive molecules with pharmacological relevance based on the popular claims. Toxicological studies associated with phytochemical analysis are important to understand the eventual toxic effects that could reduce its medicinal value. The present review provides insights for future research aiming for both ethnopharmacological validation of its popular use and its exploration as a new source of herbal drugs and/or bioactive natural products.
                Bookmark

                Author and article information

                Journal
                ars
                Ars Pharmaceutica (Internet)
                Ars Pharm
                Universidad de Granada (Granada, Granada, Spain )
                2340-9894
                December 2020
                : 61
                : 4
                : 209-213
                Affiliations
                [1] Santa Clara Villa Clara orgnameUniversidad Central Marta Abreu de las Villas orgdiv1Facultad de Química y Farmacia orgdiv2Departamento de Ciencias Farmacéuticas Cuba
                [2] Santa Clara Villa Clara orgnameUniversidad Central Marta Abreu de las Villas orgdiv1Centro de Bioactivos Químicos Cuba
                Article
                S2340-98942020000400002 S2340-9894(20)06100400002
                10.30827/ars.v61i4.11800
                7a2e3c58-e505-4722-9d17-0cdbe554cc70

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 10 January 2020
                : 18 June 2020
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 14, Pages: 5
                Product

                SciELO Spain

                Categories
                Artículos Originales

                Leishmania,Jatropha gossypifolia L.,Citotoxicidad,Cytotoxicity,Leishmaniasis

                Comments

                Comment on this article