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1.
Rev. chil. cir ; 48(3): 225-33, jun. 1996. ilus, tab, graf
Article in Spanish | LILACS | ID: lil-175033

ABSTRACT

El cáncer de la vesícula biliar (CV) es una enfermedad de lata prevalencia en Chile y habitualmente asociada a colelitiasis. En 110 pacientes con CV y colelitiasis, y en 106 con colelitiasis sin antecedentes neoplásicos se investigan los antígenos del sistema HLA (A, B, C, DR y DQ), buscando marcadores que permitan asociar colelitiasis con CV y analizando el comportamiento del sistema en relación a la sobrevida de pacientes con CV. Se encontraron asociaciones facilitadoras de CV en los antígenos DR6 (tipificado sin splits) (p< 0,006 - RR 1,64); en la suma de todos los splits DR6 incluido el antígeno DR6 (p< 0,006 -RR 1,47) y DQ3 (p< 0,006 - RR 1,45). Se hallaron asociaciones protectoras de CV en los antígenos A19 (p< 0,006); DR11(5) (p< 0,0001 - RR 0,68) y DQ7(3) (p< 0,008 - RR 0,63). La sobrevida mayor a 5 años de los pacientes con CV se asoció a los antígenos DR5 (p< 0,0001) y DR52 (p< 0,02). Los hallazgos sugieren una asociación entre CV y algunos antígenos HLA, sin embargo, es prematuro recomendar su uso en la práctica clínica habitual. Es necesario estudiar a nivel de genética molecular los alelos responsables de dichas asociaciones, en partícular el alelo DR52b


Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , HLA Antigens/blood , Cholelithiasis/immunology , Gallbladder Neoplasms/immunology , Alleles , Antigens, Differentiation/blood , Histocompatibility Antigens/blood , HLA Antigens/classification , HLA Antigens/genetics , B-Lymphocytes , Disease-Free Survival , Histocompatibility Testing , Immune Sera/immunology , Survival , T-Lymphocytes
2.
Braz. j. med. biol. res ; 24(3): 275-9, mar. 1991. tab
Article in English | LILACS | ID: lil-99565

ABSTRACT

The total number of lymphocytes and the percentage of CD45RO+ (putative memory T cell) and CD45R+ (putative naive T cell) were determined in 15 cord blod samples, 66 healthy children ranging in a age from 1 to 18 years, 16 adults (23-59 years) and 16 aged individuals (60-96 years). The total number of lymphocytes decreased with age and reached the adult range in children to the adult group,white the percentage of CD45RO+ Tcells was low in cord blood and increased with age.No significant difference was observed between the adult and the aged groups for either lymphocyte subset. These data support the view that CD45RO+ and CD45R+ T-cell subsets represent maturational stages of T cells


Subject(s)
Infant , Child, Preschool , Child , Adolescent , Adult , Middle Aged , Humans , Aging/metabolism , Antigens, CD/blood , Histocompatibility Antigens/blood , T-Lymphocyte Subsets/metabolism , T-Lymphocytes/metabolism , Aged, 80 and over , Aging/blood , Aging/immunology , Antigens, CD/metabolism , Cellular Senescence , Fetal Blood/immunology , Fetal Blood/physiology , Histocompatibility Antigens/metabolism , Immunophenotyping , Leukocyte Count , Lymphocyte Activation , T-Lymphocyte Subsets/immunology , T-Lymphocyte Subsets/physiology , T-Lymphocytes/immunology , T-Lymphocytes/physiology
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