ABSTRACT
O estudo objetivou realizar ensaio toxicológico pré-clínico inicial para investigar a toxicidade da planta. Na investigação da DL50 foram utilizados grupos de camundongos Swiss machos (n = 10) submetidos a doses de 5,0 g/kg, via oral, e dose de 2,0 g/kg por via intraperitoneal, da fração aquosa das folhas (FAF) de Cissus sicyoides L. Foi retirado sangue através do plexo braquial após sete dias, para análise laboratorial de parâmetros hematológicos e bioquímicos. No estudo anatomopatológico, os animais foram examinados macro e microscopicamente, com ressecção de pulmão, coração, fígado e rins. Para análise dos dados foram utilizadas técnicas de estatística descritiva e inferencial. Na avaliação dos parâmetros hematológicos e bioquímicos dos camundongos Swiss, foram detectadas alterações nas transaminases AST e ALT e na fosfatase alcalina (FAL), caracterizando as alterações hepáticas demonstradas no estudo histopatológico. Na avaliação histológica do fígado de camundongos, evidenciou-se hepatite reacional com portite linfocitária crônica e lobular multifocal, hiperplasia kupferiana, colapsos focais da trama reticular, ausência de fibrose portal e lobular. O estudo toxicológico pré-clínico agudo demonstrou em camundongos alterações hepáticas.
The aim of the study was to carry through pre-clinical toxicological assay to analyze the toxicity of the plant. In the inquiry of the LD50 groups of male Swiss rats (n = 10) were given orally 5.0 g/kg, and 2.0 g/kg intraperitoneally, of the water fraction of the leaves (WFL) of Cissus sicyoides L. Blood was removed through brachial plexus after seven days, for laboratory analysis of hematological and biochemical parameters. In the anatomopathological study, the animals had been examined macro and microscopically, with dissection of lung, heart, liver and kidneys. For analysis of the data techniques of descriptive and inferencial statistics had been used. In the evaluation of the hematological and biochemical parameters of the Swiss rats, alterations in aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (FAL) had been detected, characterizing the demonstrated hepatic alterations in the histopathological study. In the histological evaluation of the rats's liver, submitted to the poisoning, reactionary hepatitis with chronic linfocity portite was proven and to lobular multifocal, hiperplasia kupferiana, focal collapses of the reticular tram, absence of fibrosis, absences of cellular atipias and reactionary subcapsulite. The acute pre-clinical toxicological study demonstrated hepatic alterations in rats.