Abstract:
:Tachyzoites of Toxoplasma gondii multiply 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. gondii tachyzoites 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. gondii multiplication 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. gondii without affecting the host cells.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
de Melo EJ,Mayerhoffer RO,de Souza Wdoi
10.1016/s0378-1097(00)00074-4keywords:
subject
Has Abstractpub_date
2000-04-01 00:00:00pages
79-82issue
1eissn
0378-1097issn
1574-6968pii
S0378-1097(00)00074-4journal_volume
185pub_type
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