Avaliação pré clínica da toxicidade aguda e da atividade diurética oral do extrato aquoso bruto das folhas da palicourea coriacea (cham.) k. Schum (Rubiaceae) douradinha do campo

• Ano de defesa: 2011
• Autor(a) principal: PEREIRA, Marcelo Elias
• Orientador(a): CUNHA, Luiz Carlos da
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Mestrado em Ciências Farmacêuticas
• Departamento: Ciências da Saúde - Farmácia
• País: BR
• Palavras-chave em Português: Plantas medicinais; Palicourea coriacea; Atividade diurética; Toxicidade aguda
• Palavras-chave em Inglês: Medicinal plants; Palicourea coriacea; Diuretic activity; Acute toxicity
• Área do conhecimento CNPq: CNPQ::CIENCIAS DA SAUDE::FARMACIA
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tde/2106

Palicourea coriacea (Cham.) K. Schum, known as douradinha or douradinha-docampo, is a plant of Cerrado in the form of sub-shrubs with yellow flowers, belonging to the Rubiaceae family. Its leaves are used in preparations of home remedies in the form of teas, to treat kidney stones, inflammation / infection of the urethra, kidneys, bladder, and as a diuretic. This study aimed to evaluate the acute toxicity in rats and mice, as well as the diuretic activity in rats of the crude aqueous extract of dried leaves Palicourea coriacea (EABLPC). The acute oral toxicity EABLPC was investigated according to OECD 423. To evaluate the diuretic activity three groups of rats received doses of EABLPC (80, 160 and 320 mg / kg), one group received only saline solution, and another received furosemide (20 mg / kg) administered by gavage for eight days, being made volume measurement and evaluation of urinary concentrations of electrolytes (Na+, K+ and Cl-), creatinine and urea in urine and blood. The extract did not develop signs of toxicity or mortality in animals and found no pathological changes. In the evaluation of diuretic activity observed - an increase in urinary volume, water consumption and excretion of electrolytes, mice treated with EABLPC, compared to untreated, but not statistically significant differences were detected in blood samples. The results showed that the extract belongs to Class 5 (Substances with LD50 greater than 2000 mg / kg), being considered of low toxicity. The increase in urine volume, water consumption and excretion of electrolytes confirmed the diuretic activity of EABLPC. This study confirmed the use of ethnopharmacological EABLPC.