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Rev. cuba. plantas med ; 24(4): 1-14, 2019. graf
Article in Portuguese | MOSAICO - Integrative health | ID: biblio-1247372

ABSTRACT

Introdução: venenos de serpentes do gênero Bothrops são capazes de induzir bloqueio neuromuscular em preparações isoladas de mamífero e ave. O tratamento específico é a soroterapia, porém, nem sempre se mostra eficaz contra a toxicidade induzida pelo veneno. Por outro lado, compostos vegetais têm sido estudados com finalidade antiofídica, como é o caso da Camellia sinensis (chá verde). Objetivo: o objetivo foi de avaliar a atividade do extrato alcoólico de Camellia sinensis contra a ação de diferentes venenos botrópicos em preparações neuromusculares de ave. Métodos: foram utilizadas preparações neuromusculares de biventer cervicis de pintainho (BC) que foram incubadas com: venenos de diferentes serpentes do gênero Bothrops (B. jararaca, B. jararacussu, B. alternatus e B. neuwiedi, 50-100 µg/mL), extrato alcoólico de Camellia sinensis (Cs) 100 µg/ml ou pré-tratadas com Cs (30min) seguida da adição dos diferentes venenos botrópicos. Resultados: ao final do experimento, foi observado bloqueio da resposta contrátil em 69,7 ± 4,3% (B. jararaca), 83,1 ± 10% (B. jararacussu), 88,1 ± 4,5% (B. alternatus) e 92,4 ± 5,6% (B. neuwiedi). Quando as preparações foram pré incubadas com o extrato de Cs, as proteções foram de: 62%, 89,2%, 75,1% e 78,2%, respectivamente. Conclusão: conclui-se que o extrato de Camellia sinensis se mostrou eficaz contra a neurotoxicidade induzida por venenos botrópicos


Introduction: venoms from snakes of the Bothrops genus are capable of inducing neuromuscular blockade in preparations isolated from mammals and birds. The specific treatment is serum therapy, but it is not always effective against the toxicity induced by the venom. On the other hand, some plant compounds have been studied for antiophidic purposes, as is the case with Camellia sinensis (green tea). Objective: evaluate the activity of the alcoholic extract from Camellia sinensis against the action of various bothropic venoms in bird neuromuscular preparations. Methods: Chick biventer cervicis (BC) neuromuscular preparations were used which were incubated with venoms from various snakes of the Bothrops genus (B. jararaca, B. jararacussu, B. alternatus and B. neuwiedi, 50-100 µg/ml), Camellia sinensis (Cs) alcoholic extract, 100 µg/ml, or previously treated with Cs (30 min), followed by the addition of the various bothropic venoms. Results: blockade of the contractile response was observed in 69.7 ± 4.3% (B. jararaca), 83.1 ± 10% (B. jararacussu), 88.1 ± 4.5% (B. alternatus) and 92.4 ± 5.6% (B. neuwiedi). When the preparations were previously incubated with Cs extract, results were 62%, 89.2%, 75.1% and 78.2%, respectively. Conclusion: Camellia sinensis extract was found to be effective against neurotoxicity induced by bothropic venoms.


Subject(s)
Snake Venoms , Bothrops , Camellia sinensis , Plants, Medicinal , Medicine, Traditional
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