Apoptotic-like activity of staurosporine in axenic cultures of Trypanosoma evansi
| Autor: | Gustavo Bruges, Meyerling Betancourt, Mariana March, Evangelina Sanchez, Alfredo Mijares |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Revista do Instituto de Medicina Tropical de São Paulo, Vol 54, Iss 2, Pp 103-108 (2012) |
| Druh dokumentu: | article |
| ISSN: | 1678-9946 0036-4665 |
| DOI: | 10.1590/S0036-46652012000200008 |
| Popis: | Trypanosoma evansi is a blood protozoan parasite of the genus Trypanosoma which is responsible for surra (Trypanosomosis) in domestic and wild animals. This study addressed apoptotic-like features in Trypanosoma evansi in vitro. The mechanism of parasite death was investigated using staurosporine as an inducing agent. We evaluated its effects through several cytoplasmic features of apoptosis, including cell shrinkage, phosphatidylserine exposure, maintenance of plasma membrane integrity, and mitochondrial trans-membrane potential. For access to these features we have used the flow cytometry and fluorescence microscopy with cultures in the stationary phase and adjusted to a density of 10(6) cells/mL. The apoptotic effect of staurosporine in T. evansi was evaluated at 20 nM final concentration. There was an increase of phosphatidylserine exposure, whereas mitochondrial potential was decreased. Moreover, no evidence of cell permeability increasing with staurosporine was observed in this study, suggesting the absence of a necrotic process. Additional studies are needed to elucidate the possible pathways associated with this form of cell death in this hemoparasite. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|