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Rev. cuba. endocrinol ; 13(1): 17-27, ene.-abr. 2002. tab
Article in Spanish | LILACS, CUMED | ID: lil-342041

ABSTRACT

Se estudiaron 66 sujetos ICA +: 21 diabéticos tipo 1, 24 diabéticos clasificados inicialmente como de tipo 2 y 21 familiares de primer grado de diabéticos tipo 1, se compararon con 101 individuos ICA -: 20 diabéticos tipo 2, 20 FPG, 21 niños y 40 adultos controles no diabéticos para analizar si la respuesta inmunológica a H. pylori está asociada con anticuerpos antiislotes pancreáticos (ICA). Los ICA se determinaron por el método de inmunofluorescencia indirecta con incubación prolongada y los niveles de anticuerpos (IgG) contra H. pylori (HP), por un ELISA utilizando un kit comercial. Se observó frecuencia de anticuerpos (IgG) contra H. pylori del 38,0(por cineto) (25/66) en los sujetos ICA + y del 39,6(por ciento) (40/101) en los ICA-. No se halló correlación entre la presencia de anticuerpos (IgG) contra H. pylori y los ICA en los grupos estudiados. No hubo diferencias en relación con la presencia de anticuerpos IgG contra H. pylori entre la DM y los controles (47,7(por ciento) [31/65] vs. 40,9(por ciento) [25/61]). Se encontró alto porcentaje de anticuerpos (IgG) contra H. pylori en los diabéticos tipo 1 (33(por ciento), 7/21) en relación con los controles (14(por ciento), 3/21), pero sin diferencias significativas. Existe mayor frecuencia de anticuerpos contra Helicobacter en los controles adultos, en comparación con los niños (55por ciento), 22/40 vs. 14(por ciento), 3/21, p = 0,0025). La frecuencia de anticuerpos contra H. pylori está mucho más elevada en los controles adultos quizá por la mayor posibilidad de exposición a reinfecciones. A pesar de estos resultados, no excluimos que la infección por H. pylori esté relacionada con la diabetes tipo 1, porque algunos estudios sugieren que la IgG contra H. pylori no persiste por largo tiempo(AU)


66 ICA-positive patients were studied: 21 type 1 diabetics, 24 diabetics initially classified as type 2 and 21 first-degree relatives of type 1 diabetics. They were compared with 101 ICA-negative patients: 20 type 2 diabetics, 20 first-degree relatives, 21 children and 40 non-diabetic adult controls to analyze if the immunolgical response to H. pylori is associated with islet cell antibodies (ICA). The ICA were determined by the indirect immunofluorescence method with prolongued incubation and the levels of antibodies (IgG) versus H. pylori (HP) by an ELISA using a commercial kit. It was observed a frequency of antibodies (IgG) versus H. pylori of 38.0 percent (25/66) in ICA-positive patients and of 39.6 percent (40/101) in ICA-negative patients. No correlation was found between the presence of antibodies (IgG) versus H.pylori and the ICA in the studied groups. There were no differences as regards the presence of IgG anitbodies versus H. pylori between diabetes mellitus and the controls (47.7 percent [31/65] vs. 40.9 percent [ 25/61]). It was observed a high percentage of antibodies (IgG) vs. H. pylori in type 1 diabetics (33 percent, 7/21) in relation to the controls (14 percent, 3/21), but with no significant differences. The frequence of antibodies vs. Helicobacter in adult controls is higher than in children (55 percent, 22/40 vs. 3/21, p=0.0025). The frequency of antibodies vs. H. pylori is much more elevated in the adult controls may be because of the greater possibility of exposure to reinfections. In spite of these results, we do not exclude the idea that the infection due to H. pylori is related to type I diabetes, since some studies suggest that IgG versus H. pylori does not persist for a long time(AU)


Subject(s)
Humans , Child , Adult , Autoantibodies , Helicobacter pylori/immunology , Islets of Langerhans , Diabetes Mellitus, Type 1/complications , Diabetes Mellitus, Type 2/complications , Risk Factors , Environmental Hazards
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