ABSTRACT
Objective To evaluate the safety of fibrin sealant (FS) intraperitoneal injection in SD rats .Methods 80 male and female SD rats were randomly divided into four groups (0 ,85.5 ,171 .0 ,342 .0 mg/kg) by body weight .All rats were in-traperitoneally injected with vehicle or FS daily for 14 days followed by a 28-day recovery period .The clinical signs ,hematolog-ical and biochemical indices were measured .The pathology were observed .Results Increase of white blood cell count (WBC) and decrease of fibrinogen (FIB) in d 14 were found in 171 .0 mg/kg and 342 .0 mg/kg dosage groups .Furthermore ,the tend-ency of weight increase of spleen were found in 171 .0 mg/kg and 342 .0 mg/kg dosage groups .Pathological exams of peritoneal cavity found that there were granulation tissues containing FS in some of the rats in 342 .0 mg/kg group .All of these changes got reversed after the recovery period .Conclusion The safety dose in this study is considered to be 85.5 mg/kg ,and the toxic-ity dose is 171 .0 mg/kg .The target toxicity systems or site of FS in SD rats are hematological system ,immune system and in-jection site .The toxic effects of FS are reversible .
ABSTRACT
Introducción: las plantas medicinales constituyen una valiosa alternativa terapéutica y su validación científica es una necesidad. Objetivo: identificar los posibles efectos tóxicos producidos por la infusión de Chenopodium ambrosioides L. (Chenopodiaceae) sobre el modelo biológico utilizado. Métodos: para determinar la toxicidad subcrónica de la infusión se emplearon ratones albinos suizos NIH de los 2 sexos, a los que se les administró por vía oral infusiones de la especie estudiada a concentraciones de 32, 64 y 134 mg/mL por 90 días. Al mismo tiempo se realizaron observaciones clínicas diarias con el fin de identificar algún efecto tóxico posadministración de la sustancia. Después fueron sacrificados para realizar los exámenes hematológicos (hematocrito, hemoglobina, glóbulos rojos, glóbulos blancos, neutrófilos y linfocitos) y bioquímicos (alanino aminotransferasa y creatinina), así como estudios macroscópicos e histológicos de los órganos internos (riñón, hígado, pulmón e intestino). Resultados: se encontró que la infusión de Chenopodium ambrosioides a las dosis administradas no causó efectos determinantemente significativos en los parámetros toxicológicos, en el peso corporal, en hematología y química sanguínea, al igual que tampoco provocó alteraciones anatomopatológicas sobre los órganos y tejidos evaluados. Conclusiones: la infusión de Chenopodium ambrosioides bajo estas condiciones experimentales no presentó actividad tóxica.
Introduction: medicinal plants represent a valuable therapeutic alternative and their scientific validation is a must. Objectives: to determine the possible toxic effects produced by the infusion of Chenopodium ambrosioides L. (Chenopodiaceae) on the used biological model. Methods: to determine the subchronic toxicity of the infusion, NIH Swiss albino mice of both sexes were used, to which infusions from the tested species, at concentrations of 32, 64, and 134 mg/mL , were orally administered for 90 days. At the same time, daily clinical observations were performed in order to identify any toxic post-dose administration. Afterwards, they were sacrificed for conduction of hematological tests (hematocrit, hemoglobin, red blood cells, white cells, neutrophils and lymphocytes) and biochemical (alanine aminotransferase and creatinine) and macroscopic and histological studies of the internal organs (kidney, liver, lung and intestine.). Results: the infusion of Chenopodium ambrosioides at the tested doses caused neither decisively significant effects on the toxicological parameters, body weight, hematology and blood chemistry nor pathological changes on organs and tissues. Conclusions: the infusion of Chenopodium ambrosioides under our experimental conditions showed no toxic activity.