Pruba de anglutinación indirecta de partículas de gelatina, un medio simple y sensible para el serodiagnóstico de la de la enfermedad de Chagas / Annual Reports 1992 / The gelatine praticle indirect agglutination test, a means of simple and sensitive serodiagnósis of Chagas' disease

An indirect agglutination test using Trypanosoma cruzi antigen-coated gelatin particles was employed to Trypanosomiasis in Paraguay. Results with this test were quite comparable to those obtained with enzyme-linked immusorbent assay (Elisa). Furthermore, nonspecific reaction to the gelatin particles alone was not found in either acute or chronic infection. This method is more convenient than the ELISA, since the antigen-conjugate particles are stable for at least 1 year at 47 ºC and the test itself is short and simple to perform and does not require specialized equipment

Caracterización de un anricuuerpo monoclonal espicífico para el Trypanosoma cruzi / Annual Reports 1992 / Characterization of a monoclonal antibody specific to Trypanosoma cruzi

Amonoclonal antibody (MoAb), designated TCY-3, against Trypanosoma cruzi was obtained from spleen cells of BALB/c mice immunized with crude soluble antigens of T. curzi trypomastigotes. This MoAb Showed no cross-reactivity with 12 other heterologous parasite antigens, including promastigotes of Leishmania amazonensis and L. panamensis. Moreover, this MoAb failed to react with various organs of mouse and rat, including brain and heart. The molecular wieght to the molecule recognized by this MoAb is approximately 53 kD. Its determinant is likely protein nature, since it is sensitive to trypsin but not to periodate. Sera from mice chronicaly infected with T. cruzi reacted with the 53 kD molecule, which suggests that TCY-3 may be useful in the purification of T. cruzi- Specific antigen

Precencia de receptores de células rojas sangínea de cabral en células mononucleares de mono Cebus apella / Annual Reports 1991 / Presence of receptorst to sheep red blood cells in mononucleares cells from Cebus apella monkeys

The configuration of E Rosettes with sheep red blood cells and the expression of the epitope detected for the monoclonal antibody anti-CD2 was detected in mononuclear cells from 9 Cebus apella monkeys. Nine human controls were employed, and also the results demostrated the existence of inhibition in the formation of rosettes when anti-CD2 antiboides were used to a maximumdilution of 1/1000