2009
DOI: 10.1590/s0074-02762009000500003
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Effect of Solanum nudum steroids on uninfected and Plasmodium falciparum-infected erythrocytes

Abstract: Steroids from

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Cited by 13 publications
(11 citation statements)
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“…Different native populations exposed to malaria transmission in the Amazon Region (including Brazil, Venezuela, Colombia and Guiana) and other Latin American countries use plant remedies as antimalarials, e.g., in Colombia ( Garavito et al 2006 , López et al 2009 ) and Bolivia ( Muñoz et al 2000 ) and among traditional healers in Brazil ( Carvalho et al. 1991 ).…”
Section: Discussionmentioning
confidence: 99%
“…Different native populations exposed to malaria transmission in the Amazon Region (including Brazil, Venezuela, Colombia and Guiana) and other Latin American countries use plant remedies as antimalarials, e.g., in Colombia ( Garavito et al 2006 , López et al 2009 ) and Bolivia ( Muñoz et al 2000 ) and among traditional healers in Brazil ( Carvalho et al. 1991 ).…”
Section: Discussionmentioning
confidence: 99%
“…Andrographolide effect on merozoite invasion was performed as previously described [4]. Briefly, non infected RBCs were treated at 37 C for 2 h with different concentrations of the drug (1 mM/mM) dissolved in the incomplete malaria culture medium (RPMI-1640, HEPES-tris buffer 25 mmM and gentamicin 20 mg/mL).…”
Section: Effect Of Andrographolide On Merozoites Invasivenessmentioning
confidence: 99%
“…During the trophozoite stage (approximately after 12-15 h post invasion), PRBCs start expressing unique protein channels, known as new permeation pathways (NPP). NPPs mediate acquisition of nutrients and excretion of waste products as they mediate efflux and influx of various biochemical entities, viz, organic anions, amino acids, sugars, nucleotides and inorganic ions [3][4][5].…”
Section: Introductionmentioning
confidence: 99%
“…Como control de hemólisis basal se usaron eritrocitos tratados con solución tampón isotónica de fosfato de sodio y, como control de máxima hemólisis, se utilizó el Tween 20 al 1 %. La suspensión de eritrocitos con los tratamientos fue incubada a 37 °C durante una hora y la cantidad de hemoglobina liberada se determinó en un espectrofotómetro a 540 nm (24,25). La concentración hemolítica 50 (CH 50 ) se calculó en el programa GraphPad Prism ™ , versión 5.01, y el porcentaje de hemólisis se calculó con la siguiente fórmula: porcentaje de hemólisis (%)= (tratamientosolución isotónica/tween-solución isotónica) x 100.…”
Section: Ensayo De Hemólisisunclassified
“…Estos datos apoyan resultados previos obtenidos por López, et al, en el 2009, quienes encontraron que los esteroides aislados de S. nudum y la diosgenona, no causaron hemólisis en eritrocitos sanos, pero sí en eritrocitos parasitados (24).…”
Section: Concentraciones Más Altas De Los Tratamientosunclassified