| Autor: |
Melo, E.J.T., Mayerhoffer, R.O., Souza, W. |
| Zdroj: |
FEMS Microbiology Letters; April 2000, Vol. 185 Issue: 1 p79-82, 4p |
| Abstrakt: |
Tachyzoites of Toxoplasma gondiimultiply within the parasitophorous vacuole (PV) until the lysis of the host cell. This study was undertaken to evaluate the effect of hydroxyurea (a specific drug that arrests cell division at G1/S phase) on the multiplication of T. gondiitachyzoites in infected Vero cells. Infected host cells were treated with hydroxyurea for periods varying from 5 to 48 h, and the survival and morphology of the parasite were determined. Hydroxyurea arrested intracellular T. gondiimultiplication in all periods tested. After 48 h of incubation with hydroxyurea, intracellular parasites were not easily observed in Vero cells. Ultrastructural observations showed that infected host cells treated with hydroxyurea for 24 h or more presented disrupted intracellular parasites within the PV. However, the host cells exhibited a normal morphology. Our observations suggest that hydroxyurea was able to interfere with the cycle of the intracellular parasite, leading to the complete destruction of the T. gondiiwithout affecting the host cells. |
| Databáze: |
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