Browsing by Author "TORRES, J"

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    IMMUNOLOGICAL EVALUATION OF PATIENTS WITH INVASIVE-CARCINOMA OF THE GALLBLADDER
    (1993) CUBILLOS, L; GONZALEZ, S; SEPULVEDA, C; RIVERO, S; CALVO, A; CARACCI, M; TORRES, J; TAPIA, A; ZUNIGA, J; FALCON, C; FERREIRO, O; MARTINEZ, I
    Forty-three patients with invasive adenocarcinoma of the gallbladder were postoperatively studied in order to determine their general immunological status as well as the local immunohistological reaction to the tumor. At the end of the follow-up, they formed two groups: 19 living patients (group GL) and 24 dead patients (group GD). As a control group (GC), 21 patients with cholecistectomy for cholelithiasis and without carcinoma were simultaneously evaluated. In GL, most of the tumors were limited to the gallbladder wall, and in GD, most of the tumors were already disseminated at the time of diagnosis. GD presented a lower percentage of peripheral blood B lymphocytes, as compared to GL and GC cases. Skin tests of delayed hypersensitivity were significantly more reactive in GL cases than in GD cases, and less reactive in GD than in GC cases. The immunohistological evaluation of the gallbladder yielded a lower B lymphocyte infiltration in GD tumors than in the control cases. GL cases showed a higher intratumoral lymphocytic and mononuclear cell infiltration than GD cases. Although the clinical stage was higher in GD than in GL cases, there were also significant differences in the local immune response and the general immunological status. Patients with invasive gallbladder adenocarcinoma showing longer postoperative survival revealed normal or increased local and general immunological reactions, whereas patients with disseminated tumors showed an important humoral and cellular secondary immunodeficiency.
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    PREVALENCE AND IMPORTANCE OF CONGENITAL CYTOMEGALOVIRUS-INFECTION IN 3 DIFFERENT POPULATIONS
    (1982) STAGNO, S; DWORSKY, ME; TORRES, J; MESA, T; HIRSH, T
    A Chilean population was compared to low-income and middle/upper-class populations in Birmingham, Alabama [USA], with regard to prevalence of congenital cytomegalovirus infection as well as the importance of this infection in neonatal deaths. In the highly seroimmune Chilean (98%) and low-income Birmingham (82%) groups, congenital infections occurred more often (1.7% and 1.9%, respectively), than in the less immune (56%) middle/upper-income group in Birmingham (0.6%). In 407 autopsies reviewed in Chile no neonatal deaths were attributed to cytomegalic inclusion disease; in Birmingham cytomegalovirus was the cause of death in 9 of 938 (1%) newborn infants. Evidently, despite an apparent lack of protection against intrauterine transmission, maternal immunity reduces the risk of severe fetal infection.