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      Evaluación de la toxicidad hepática y renal aguda y subaguda del látex de Croton palanostigma (sangre de grado) en animales de experimentación Translated title: Determination of both acute and sub acute liver and renal toxicity of Croton palanostigma (sangre de grado) latex in experimental animals

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          Objetivo: Determinar la toxicidad hepática y renal de la administración oral del látex de Croton palanostigma, en dosis terapéutica y de mayor concentración. Materiales y Métodos: Se evaluó 60 ratas albinas, machos, en dos grupos: con administración oral aguda por 7 dìas y otro con administración oral subaguda por 30 días ad libitum. En cada grupo se tuvo tres subgrupos: (A) Látex diluido 1/1000 (dosis terapéutica), (B) Látex diluido 1/100, (C) Agua (grupo control). Medimos el peso del animal y consumo del bebedero. Después, bajo anestesia con éter, se obtuvo sangre por punción cardiaca y se centrifugó a 5000 rpm por 5 minutos para obtener plasma sanguíneo. Se determinó actividad de gamma glutamil transferasa y fosfatasa alcalina, se evaluó niveles de urea, creatinina, proteínas totales, albúmina y globulinas por espectrofotocolorimétría. Resultados: El consumo promedio del látex en el primer grupo fue: en A, 0,14ía-1/rata-1; en B, 1,34 mL/kg-1/día-1/rata-1; y, en C, agua. En el segundo grupo, fue: en A, 0,13 mL/kg-1/día-1/rata-1; en B, 1,21 mL/kg-1/día-1/rata-1; y, en C, agua. No hubo diferencia significativa en el consumo del látex diario entre los grupos tratados a 7 y 30 días. Las actividades de gamma glutamil transferasa y fosfatasa alcalina, así como los metabolitos sanguíneos y ratios hígado/peso animal y riñones/peso animal, de los grupos experimentales vs. grupo control, no presentaron diferencias significativas (p>0,05). Conclusiones: En condiciones experimentales, la administración oral de sangre de grado, aguda y subaguda, en dosis terapéuticas y de mayor concentración, no produce alteraciones bioquímicas hepáticas ni renales en animales de experimentación.

          Translated abstract

          Objective: To determine liver and renal toxicity of Croton palanostigma latex oral swallowing, in therapeutic and larger doses. Materials and Methods: Sixty albino male rats were studied in two groups: one group swallowed for a short time during 7 days and another group swallowed ad libitum during 30 days. In each group there were 3 subgroups: (A) 1/1000 diluted latex (therapeutic dose), (B) 1/100 diluted latex, (C) water (control group). The animal weight and the water or diluted latex consumption were measured. Then, the rats were given ether anesthesia, their blood was obtained by cardiac puncture and centrifuged at 5000 rpm during 5 minutes to obtain plasma. Alkaline phosphatase and transferase glutamyl gamma activity were measured; urea, creatinine, total protein, albumin and globulin levels were studied by espectrophotometry. Results: The average latex consumption in the first group were: in A, 0,14 mL/kg-1/day-1/rat-1; in B, 1,34 mL/kg-1/day-1/rat-1; and, in C, water. There was no significative difference in the daily latex consumption between the 7 and 30-day trated groups. Both the alkaline phosphatase and transferase glutamyl gamma activities, the blood metabolites and both animal liver/weight ratio and animal renal/weight ratio did not present any significative difference (p>0,05) from the control group. Conclusions: In experimental conditions, the short time and long time sangre de grado oral swallowing, in both therapeutic dose and larger concentrations, did not produce any biochemical, liver or renal alteration in the animals.

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          Most cited references 27

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          Sulfhydryl compounds may mediate gastric cytoprotection.

          Ethanol induces hemorrhagic gastric erosions and causes a dose-dependent decrease in the concentration of nonprotein sulfhydryl compounds in rat gastric mucosa. Sulfhydryl-containing drugs protect rats from ethanol-induced gastric erosions, whereas sulfhydryl blocking agents counteract the mucosal cytoprotective effect of prostaglandin F2 beta. These observations suggest that endogenous nonprotein sulfhydryls may mediate prostaglandin-induced gastric cytoprotection and that sulfhydryl drugs may have potential for preventing or treating hemorrhagic gastric erosions.
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            Review of antiviral and immunomodulating properties of plants of the Peruvian rainforest with a particular emphasis on Una de Gato and Sangre de Grado.

             S. Williams (2001)
            Viral diseases, including emerging and chronic viruses, are an increasing worldwide health concern. As a consequence, the discovery of new antiviral agents from plants has assumed more urgency than in the past. A number of native Amazonian medicines of plant origin are known to have antimicrobial and anti-inflammatory activity, although only a few have been studied for their antiviral properties and immunomodulating effects. Those most studied include: Sangre de Grado (drago) (Croton lechleri) in the Euphorbiaceae family and Una de Gato (Uncaria tomentosa) in the Rubiaceae family. This article reviews the chemical composition, pharmacological properties, state of current research, clinical use, and potential antiviral and immunomodulating activity of these and other plants from the Peruvian Amazon.
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              Efecto del clorhidrato de Taspina sobre la curación de úlcera gástrica inducida en ratas


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                Anales de la Facultad de Medicina
                An. Fac. med.
                Universidad Nacional Mayor de San Marcos. Facultad de Medicina (Lima )
                June 2005
                : 66
                : 2
                : 119-126
                [1 ] UNMSM Peru
                [2 ] UNMSM Peru
                [3 ] UNMSM Peru
                [4 ] UNMSM Peru
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