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Arq. bras. endocrinol. metab ; 53(4): 461-465, jun. 2009. tab
Article in Portuguese | LILACS | ID: lil-520771

ABSTRACT

Ainda não está definida a estratégia ideal para rastrear a doença de Addison em pacientes com diabetes melito tipo 1 (DMT1). Objetivo: O objetivo deste estudo foi determinar a prevalência do anticorpo anti-21-hidroxilase (AC anti-21OH) em pacientes DMT1 de etnia diversificada e investigar sua associação à disfunção adrenal e autoimunidade tireoidiana. Métodos: Quarenta indivíduos foram avaliados, submetidos à entrevista e à dosagem de AC antitireoperoxidase (anti-TPO), anti-21OH, TSH, T4 livre e cortisol. AC anti-21OH foi encontrado em 7,5% (n = 3)dos casos, sem disfunção adrenal associada. Resultados: Positividade para anti-21OH não ocorreu exclusivamente em pacientes com anti-TPO (+). Este foi detectado em 25% dos casos e associado a níveis de TSH mais elevados (p = 0,034) e à idade mais avançada (p = 0,009). Conclusões: Embora nossa frequência de anti-TPO (+) seja similar à da literatura, a presença de anti-21OH (+) foi superior. Entretanto, esses AC não foram associados à disfunção hormonal, o que parece não justificar o rastreamento universal da doença de Addison.


There is still no consensus about the best strategy to screen Addison’s disease (AD) in type 1 diabetes mellitus (T1DM) patients. Objective: The aim of this study was to determine the frequency of anti-21-hydroxilase (anti-21OH) in a multiethnic T1DM population and investigate if its presence is associated with any adrenal dysfunction or thyroid autoimmunity. Methods: Forty individuals underwent an interview and blood was drawn for anti- thyroperoxidase (anti-TPO), anti-21OH, TSH, free T4 and cortisol measurement. Results: Anti-21OH was found in 7.5% (n = 3), none with adrenal dysfunction. This antibody was not exclusively seen in patients with anti-TPO (+). Anti-TPO was positive in 25% and associated with higher TSH levels (p = 0.034) and older age (p = 0.009). Conclusions:Although the frequency of anti-TPO in this sample was similar to previous studies, a higher prevalence of anti-21-OH was found. However, no coexisting adrenal dysfunction was detected, which does not support universal screening for AD in this group.


Subject(s)
Adult , Female , Humans , Male , Autoantibodies/blood , Diabetes Mellitus, Type 1/enzymology , Iodide Peroxidase/immunology , /immunology , Addison Disease/enzymology , Addison Disease/immunology , Biomarkers/blood , Diabetes Mellitus, Type 1/immunology , Statistics, Nonparametric , Thyroiditis, Autoimmune/enzymology , Thyroiditis, Autoimmune/immunology , Thyrotropin/blood
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