alexa Anti-Parasite effects of new Thiosemicarbazones and the
ISSN: 2329-6631

Journal of Developing Drugs
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Research Article

Anti-Parasite effects of new Thiosemicarbazones and their Products Thiazolidinone including Cellular aspects of Intracellular Elimination of Trypanosoma Cruzi in Vitro

Laís P de Carvalho1, Marco A G B Gomes2, Barbara S Rocha2, Rodrigo R de Oliveira2, Edmilson J Maria2 and Edésio J T de Melo1*

1Laboratory of Cell Biology and Tissue, State University of North Fluminense Darcy Ribeiro Avenue Alberto Lamego, 2000 Cause California, Campos dos Goytacazes, Rio de Janeiro, Brazil

2Chemical Sciences Laboratory, State University of North Fluminense Darcy Ribeiro Avenue Alberto Lamego, 2000 Cause California, Campos dos Goytacazes, Rio de Janeiro, Brazil

*Corresponding Author:
Edésio J T de Melo
Universidade Estadual do Norte Fluminense Darcy Ribeiro
Laboratório de Biologia Celular e Tecidual, Avenida Alberto Lamego
2000, Pq Califórnia, Campos dos Goytacaze`s, Rio de Janeiro, R.J, Brasil
Tel: (+55) 22 2739-7175
E-mail: [email protected] or [email protected]

Received date: October 04, 2014; Accepted date: October 27, 2014; Published date: November 03, 2014

Citation: Carvalho LP, Gomes MAGB, Rocha BS, de Oliveira RR, Maria EJ, et al. (2014) Anti-Parasite effects of new Thiosemicarbazones and their Products Thiazolidinone including Cellular aspects of Intracellular Elimination of Trypanosoma Cruzi in Vitro. J Develop Drugs 3:126. doi: 10.4172/2329-6631.1000126

Copyright: © 2014 Carvalho LP, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Trypanosoma cruzi, agent of Chagas disease in humans, invades and replicates within a wide variety of nucleated mammalian cells until the lysis of the host cells. This study was undertaken to evaluate the cellular features of effect of new compounds of thiosemicarbazone and their thiazolidinone derivate on the multiplication of extra- and intracellular T. cruzi. Most of the compounds interrupted epimastigote proliferation at 1 mM, and above 5 mM led to drastic cytoplasm reduction, nuclear condensation and death. Ultrastructural assays showed that epimastigotes treated with 1 mM of the compounds retained main parasite organelles such as the Golgi complex and the mitochondria, but underwent drastic reduction in cytoplasm volume and led to the formation of blebs on the plasma membrane, suggesting a cell death process by apoptosis. Infected cultures treated for 24 h with the compounds showed similar effects, with drastic decrease in infection and the elimination of intracellular parasite at 1 mM without toxic effects on the host cells. Intracellular amastigotes showed progressive disorganization leading to the rupture and elimination of the parasite. The results strongly suggest that in presence of thiosemicarbazones and their derivate, intracellular amastigotes arrested the proliferation, leading to irreversible ultrastructural disorganization, death, and then elimination. When the intracellular T. cruzi elimination process was analysed, it showed that autophagy was present, in intriguing and new features to futures studies. In addition, our results in vitro also suggest that these compounds are promising molecules against intracellular T. cruzi when compared to the anti-proliferative drugs Hydroxyurea and Benznidazole.

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