Browsing by Autor "Flores, Amilcar"

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    [Serum levels for IgM and IgA antibodies to anti-trypanosoma cruzi in samples of blood from newborns from mothers with positive serology for Chagas disease].
    (2005) Rodriguez, Patricia; Truyens, Carine; Alonso-Vega, Cristina; Flores, Amilcar; Cordova, Marisol; Suarez, Eduardo; Torrico, Faustino; Carlier, Yves
    This study compares the levels of specific antibodies IgM and IgA for Chagas in samples of blood from newborns. Three groups of cord blood samples have been analysed: a group of 42 samples from newborns, displaying positive parasitemia, of seropositive mothers (M+B+), 68 samples from newborns with negative parasitemia whose mothers were seropositive (M+B-) and a group of 45 control newborns coming from mothers with negative serology for Chagas. From the 42 M+B+ samples with congenital Chagas disease, 81 and 82.9% displayed detectable levels of IgM and IgA antibodies, respectively In the M+B- group, 70.6 and 33.8% presented antibodies of IgM and IgA classes, respectively, whereas in the control group M-B-, we detected 6% and 11.1% of IgM and IgA antibodies, respectively. The calculated sensitivity of detection of congenital cases using IgM or IgA antibodies was of 82.9% and 80.9% respectively, whereas the specificity of detection was of 29.4% for IgM antibodies and of 66.1% for IgA antibodies.