Avaliação psicofarmacológica e toxicológica do R-(+)-limoneno por via inalatória em modelos de animais.

• Ano de defesa: 2012
• Autor(a) principal: Alves, Mateus Feitosa
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal da Paraí­ba; BR; Farmacologia; Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos; UFPB
• Palavras-chave em Português: Produtos naturais; Plantas medicinais; Efeito ansiolítico; Toxicologia; R-(+)-limonene; Inhalation; Anxiety; Monoterpenes; Toxicology; CIENCIAS BIOLOGICAS::FARMACOLOGIA
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/tede/6756

Medicinal plants are widely used by human to treat their ailments since the dawn of civilization. Among the most diverse plant species have attracted some interest from researchers, as is the case of "Aromatic Plants" whose activity has been attributed to essential oils. The R-(+)-limonene is a monoterpene found in several species of herbs. Studies have shown that this compound has several pharmacological activities among them, gastroprotective and antitumor. The present study aims to investigate the anxiolytic effect and inhalation toxicity in two phases: psychopharmacological and toxicological evaluation. Initially, a case of inhalation has been standardized to obtain concentration values ideal for application of the substance. After this, it was evaluated the anxiolytic activity of R-(+)-limonene in the elevated plus maze (EPM). Results showed that the substance does not have anxiolytic effects at the concentrations and at times determined. Then the animals were exposed to a daily the substance, being evaluated psychopharmacological activity through the LCE, and toxicity through biochemical and hematologic tests. The results of the EPM showed a characteristic anxiogenic possibly related to irritation that limonene causes olfactory pathways. In hematological examinations, there was a decrease in hematocrit and red blood cell hemolysis caused by continuous use of R (+) limonene inhalation. The high values of MCV, MCH and MCHC suggest changes in metabolism in the hippocampus antagonize the anxiolytic effect of the test substance. In biochemical tests there was an increase in blood glucose, creatinine, AST and lactate dehydrogenase. Increased AST is suggestive of hemolytic anemia, whereas the increase of lactate dehydrogenase is suggestive of folate deficiency or vitamin B12. Therefore, the R (+) limonene in exposure performed with cytotoxic characteristics at a concentration of 5% when administered daily for 30 days.