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1.
Rev. méd. Chile ; 130(4): 363-367, abr. 2002. graf
Article in Spanish | LILACS | ID: lil-314917

ABSTRACT

Background: Cellular immune mechanisms of the resistance to infection by T cruzi as well as the pathogenesis of Chagas disease are still controversial. Aim: To quantify and analyse the peripheral blood immune cells from chagasic and non chagasic patients by flow cytometry. Patients and methods: Peripheral blood samples were taken from 21 individuals seropositive for Chagas disease, under no specific treatment. Control samples from 21 healthy blood donors were also obtained. To quantify immune cells populations by flow cytometry, antibodies against CD3, CD4, CD8, CD16/56, CD45/14, CD19 and HLA-DR markers were used. Results: The percentage of CD8+ cells was low and the CD4+/CD8+ ratio was high in chagasic patients, compared to their non infected counterparts. No statistically significant differences in the number of CD4+, NK, B, CD4+HLADR+ and CD8+HLADR+ cells, were observed within the two groups. Conclusions: These results show that Chilean chronic chagasic patients have lower percentage of CD8+ cells and higher CD4+/CD8+ ratio than non infected individuals


Subject(s)
Humans , Male , Adult , Female , Middle Aged , Chagas Disease , Immunophenotyping/methods , Trypanosoma cruzi , CD4-Positive T-Lymphocytes , Case-Control Studies , Lymphocyte Count , CD8-Positive T-Lymphocytes , Flow Cytometry/methods
2.
Rev. chil. cir ; 47(5): 419-24, oct. 1995. tab
Article in Spanish | LILACS | ID: lil-165096

ABSTRACT

El cáncer de labio es una entidad relativamente poco frecuente. Su fácil diagnóstico y su comportamiento biológico, por lo general menos agresivo comparado con el de otras localizaciones digestivas, plantea problemas de reconstrucción al ser resecado, los que se deben resolver en la primera instancia terapéutica. Es dentro de este contexto que hemos revisado aspectos epidemiológicos, clínicos y quirúrgicos del material casuístico de nuestro equipo entre los años 1973 y 1993. La muestra incluyó 60 pacientes (46 hombre y 14 mujeres). Las neoplasias estudiadas comprometieron el labio inferior en 53 casos (88,3 por ciento), el superior en 5 casos (8,3 por ciento) y ambos en 2 casos (3,3 por ciento). Las comisuras fueron asiento de tumor en 3 casos (5 por ciento). El tratamiento de estos pacientes fue quirúrgico, no ofreciendo mayores problemas las lesiones tipo T1 y T2, sin embargo, tumores avanzados requirieron de una variedad de procedimientos reconstructivos que se describen


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Lip Neoplasms/surgery , Carcinoma/surgery , Surgery, Plastic/methods , Lip Neoplasms/epidemiology , Melanoma/surgery
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