RESUMO
Dried alcoholic extract of fresh Lantana camara leaves (LE), on oral administration to albino rats of both sexes, induced photodermatitis during exposure to clear sunlight for 1 hr. Its severity was related to the dose of LE and was maximal in rats exposed to sunlight from 4 to 14 hr after feeding LE and gradually declined over 40 hr. Wavelengths of light about 540 to 570 mu only were effective. In control study, the alcoholic extract of edible spinach leaves was only 1/3 in potency and its effect lasted for less than 20 hr. LE did not raise serum bilirubin, SGOT, SGPT or cause liver injury as assessed by light microscopy. However, like CCL4 but unlike spinach extract, LE impaired excretion of BSP by liver, proportionate to the dose and also maximal at 5.5 hr declining thereafter over 40 hr.
Assuntos
Animais , Feminino , Doença Hepática Induzida por Substâncias e Drogas/fisiopatologia , Testes de Função Hepática , Masculino , Transtornos de Fotossensibilidade/induzido quimicamente , Extratos Vegetais/toxicidade , Plantas Tóxicas/análise , Ratos , Ratos Endogâmicos , Dermatopatias/induzido quimicamente , Sulfobromoftaleína/análise , Luz SolarRESUMO
Desenvolvem-se um sistema rápido de cromatografia miniaturizada para controle radioquímico de Rosa Bengala-131/ e Bromossulfaleina 131/ utilizando como solvente uma soluçäo aquosa de sulfato de amônio 33%, pH 7,5. Os compostos marcados permanecem na origem enquanto os íons iodeto e iodato migram com Rf 0,5 e 0,9, respectivamente