Integral approach to evaluation of the pathogenic activity of Trypanosoma cruzi clones as exemplified by the Mexican strain.

Comparative histopathological study and analysis of parasite load in different muscle groups were carried out in BALB/c mice during the acute phase of Chagas disease. Activities of C104 clone of T. cruzi strain TPAP/MX/2002/Albarrada and the parental strain were compared.

The study of immunological component in antitumor effect of Trypanosoma cruzi.

The experiments with passive transfer of splenocytes obtained from animals immunized with Trypanosoma cruzi lysate revealed the role of cell-mediated component of the immunity in the antitumor effect of T. cruzi. The common features of T.

[Production of recombinant fragment of VacA protein and development of non-invasive method for the diagnosis of Helicobacter pylori infection].

Vacuolizing toxin (VacA) Helicobacter pylori is an important factor of pathogenicity of Helicobacter pylori and a basic marker in the diagnosis of helicobacteriosis and related diseases. A coagulation-based diagnostic test-system was elaborated for the detection of VacA in clinical samples. A fragment of vacA was cloned, for the purpose, in Escherichia coli and expressed in preparative quantities; the coded protein was purified and used in raising the diagnostic serum.

Genetic heterogeneity of Trypanosoma cruzi and its direct anticancer effect in cultured human tumor cells.

The direct inhibitory effect of Trypanosoma cruzi epimastigote lysates on in vitro cultured human breast cancer MCF-7 cells differs in various genetic groups and cloned subgroups of Trypanosoma.