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Type: Artigo de periódico
Title: Schistosoma mansoni: In vitro schistosomicidal activity of essential oil of Baccharis trimera (less) DC
Author: de Oliveira, RN
Rehder, VLG
Oliveira, ASS
Montanari, I
de Carvalho, JE
de Ruiz, ALTG
Jeraldo, VDS
Linhares, AX
Allegretti, SM
Abstract: Schistosomiasis is a chronic parasitic disease caused by the trematode species Schistosomamansoni. Chemotherapy is the only immediate recourse to minimize the prevalence and incidence of this disease worldwide. At present, praziquantel (PZQ) is the drug of choice for the treatment of all forms of schistosomiasis. However, dependence on a single drug is concern because some strains can become resistant. In this context, medicinal plants become potential candidates as sources of new drug prototypes. This study provides findings on the schistosomicidal activity of the essential oil of Baccharis trimera in in vitro assays. During the assays parameters such as motility of adult worms, oviposition, morphological changes on the tegument and especially the mortality rate of adult worms of the BH strain were evaluated. The assays, which were carried out with four concentrations - 24, 48, 91 and 130 mu g/mL - of the essential oil, have shown a promising activity regarding the parameters under study. It was possible to notice a significant decline in the motility of the worms and a mortality rate of 100% 30 h after they had been exposed to the essential oil in the concentration of 130 mu g/mL. Male worms were more susceptible, producing a dose-response effect within a smaller exposition period than female worms. In what refers to morphological changes, the essential oil of B. trimera induced a peeling on the tegument surface, as well as the destruction of tubercles and spines, which resulted in smooth areas on the body surface. The essential oil also caused tegument destruction in female worms, in addition to destruction of the oral and acetabular suckers. It is the first time that the schistosomicidal activity has been reported for essential oil of B. trimera (less) DC. (c) 2012 Elsevier Inc. All rights reserved.
Subject: Baccharis trimera
Essential oil
In vitro
Schistosoma mansoni
Country: EUA
Editor: Academic Press Inc Elsevier Science
Citation: Experimental Parasitology. Academic Press Inc Elsevier Science, v. 132, n. 2, n. 135, n. 143, 2012.
Rights: fechado
Identifier DOI: 10.1016/j.exppara.2012.06.005
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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