In vivo antileishmanial activity and chemical profile of polar extract from Selaginella sellowii


Autoria(s): Queiroz, Dayane Priscilla de Souza; Carollo, Carlos Alexandre; Kadri, Mônica Cristina Toffoli; Rizk, Yasmin Silva; Araujo, Vanessa Carneiro Pereira de; Monteiro, Paulo Eduardo de Oliveira; Rodrigues, Patrik Oening; Oshiro, Elisa Teruya; Matos, Maria de Fátima Cepa; Arruda, Carla Cardozo Pinto de
Cobertura

Origin of publication: Brazil

Data(s)

06/07/2016

Resumo

The polar hydroethanolic extract from Selaginella sellowii (SSPHE) has been previously proven active on intracellular amastigotes (in vitro test) and now was tested on hamsters infected with Leishmania (Leishmania) amazonensis (in vivo test). SSPHE suppressed a 100% of the parasite load in the infection site and draining lymph nodes at an intralesional dose of 50 mg/kg/day × 5, which was similar to the results observed in hamsters treated with N-methylglucamine antimonate (Sb) (28 mg/Kg/day × 5). When orally administered, SSPHE (50 mg/kg/day × 20) suppressed 99.2% of the parasite load in infected footpads, while Sb suppressed 98.5%. SSPHE also enhanced the release of nitric oxide through the intralesional route in comparison to Sb. The chemical fingerprint of SSPHE by high-performance liquid chromatography with diode-array detection and tandem mass spectrometry showed the presence of biflavonoids and high molecular weight phenylpropanoid glycosides. These compounds may have a synergistic action in vivo. Histopathological study revealed that the intralesional treatment with SSPHE induced an intense inflammatory infiltrate, composed mainly of mononuclear cells. The present findings reinforce the potential of this natural product as a source of future drug candidates for American cutaneous leishmaniasis.

Formato

html

Identificador

http://www.bioline.org.br/abstract?id=oc16021

Idioma(s)

en

Publicador

Fundação Oswaldo Cruz, Fiocruz

Relação

http://memorias.ioc.fiocruz.br; http://www.bioline.org.br/oc

Direitos

Copyright 2016 - Memórias do Instituto Oswaldo Cruz

Fonte

Memórias do Instituto Oswaldo Cruz (ISSN: 1678-8060) Vol 111 Num 3

Palavras-Chave #antileishmanial activity; plant extracts; natural products; experimental leishmaniasis
Tipo

AA