Journal
JOURNAL OF NATURAL PRODUCTS
Volume 76, Issue 8, Pages 1505-1508Publisher
AMER CHEMICAL SOC
DOI: 10.1021/np400193m
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Funding
- Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro (FAPERJ)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/Programa Estrategico de Apoio a Pesquisa em Saude (CNPq/PAPES) [407590/2012-9]
- Instituto Oswaldo Cruz/Fundacao Oswaldo Cruz (IOC/Fiocruz)
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The present study reports the mechanism of the antileishmanial activity of quercetin (1) against the intracellular amastigote form of Leishmania amazonensis. Treatment with 1 reduced the infection index in L. amazonensis-infected macrophages in a dose-dependent manner, with an IC50 value of 3.4 mu M and a selectivity index of 16.8, and additionally increased ROS generation also in a dose-dependent manner. Quercetin (1) has been described as a pro-oxidant that induces the production of reactive oxygen species, which can cause cell death. Taken together, these results suggest that ROS production plays a role in the mechanism of action of 1 in the control of intracellular amastigotes of L. amazonensis.
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