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1.
Arch. endocrinol. metab. (Online) ; 62(5): 566-570, Oct. 2018. tab, graf
مقالة ي الانجليزية | LILACS | ID: biblio-983788

الملخص

SUMMARY Insulin autoimmune syndrome (IAS, Hirata's disease) is a rare hypoglycemic disorder characterized by spontaneous hypoglycemia associated with extremely high circulating insulin levels and positive anti-insulin antibody results. Thus far, most cases have been reported in Asian countries, notably Japan, with few cases reported in western countries. As a possible cause, it is associated with the use of drugs containing sulfhydryl radicals, such as captopril. This report refers to a 63-year-old female Brazilian patient with a history of postprandial hypoglycemia. After extensive investigation and exclusion of other causes, her hyperinsulinemic hypoglycemia was considered to have likely been induced by captopril. Most cases of IAS are self-limiting. However, dietary management, corticosteroids, plasmapheresis, and rituximab have already been used to treat patients with IAS. In our case, after discontinuation of captopril, an initial decrease in insulin autoantibody levels was observed followed by improvement in episodes of hypoglycemia. Although it is a rare disease, IAS should be considered in the differential diagnosis of endogenous hyperinsulinemic hypoglycemia. Patients with suspected IAS must be screened for autoimmunity-related drugs for insulin. Initial clinical suspicion of IAS can avoid unnecessary costs associated with imaging examinations and/or invasive surgical procedures.


الموضوعات
Humans , Female , Middle Aged , Autoimmune Diseases/chemically induced , Captopril/adverse effects , Hypoglycemia/chemically induced , Hypoglycemia/immunology , Insulin Antibodies/drug effects , Antihypertensive Agents/adverse effects , Autoimmune Diseases/ethnology , Autoimmune Diseases/immunology , Syndrome , Blood Glucose/analysis , Brazil , Hypoglycemia/ethnology , Insulin Antibodies/immunology
2.
Arq. bras. endocrinol. metab ; Arq. bras. endocrinol. metab;52(2): 146-155, mar. 2008. ilus, graf
مقالة ي الانجليزية | LILACS | ID: lil-480988

الملخص

We can now predict the development of Type 1A (Immune Mediated) diabetes primarily through the determination of four biochemically characterized islet autoantibodies [insulin, GAD65, IA-2 (ICA512) and (Znt8)]. Prediction is possible because beta-cell destruction is chronically progressive and very slow in most, but not all individuals. We can also prevent type 1A diabetes in animal models and a major goal is the prevention of type 1A diabetes in man with multiple clinical trials underway.


Atualmente o desenvolvimento do diabetes melito tipo 1 A( imune mediado) pode ser predito através da determinação de quatro auto-anticorpos antiilhotas [antiinsulina, anti-GAD65, anti-IA2 (ICA512) e (anti-Znt8)] caracterizados bioquimicamente. A predição dessa doença é possível devido a destruição das células-beta, não em todos os indivíduos mas na sua maioria, ser crônica e lentamente progressiva. Também é possível prevenir o DM1 A em modelos animais e o objetivo maior é a prevenção dessa doença em humanos, para os quais vários protocolos clínicos estão em andamento.


الموضوعات
Animals , Female , Humans , Male , Mice , Diabetes Mellitus, Type 1/immunology , Autoimmunity/immunology , Diabetes Mellitus, Type 1/genetics , Diabetes Mellitus, Type 1/metabolism , Genetic Predisposition to Disease/genetics , Haplotypes , HLA-DQ Antigens/genetics , HLA-DR Antigens/genetics , Insulin Antibodies/immunology , Insulin Antibodies/metabolism , Insulin/immunology , Insulin/metabolism , Mice, Inbred NOD
3.
Rev. méd. Chile ; 129(6): 611-9, jun. 2001. tab, graf
مقالة ي الأسبانية | LILACS | ID: lil-295389

الملخص

Background: Islet cell-specific autoantibodies such as islet cell antibody (ICA), antiinsulin (IAA), anti-glutamic acid decarboxylase (GAD) and anti-tyrosine phosphatase (IA2) can be present in patients with type I diabetes. Breast feeding duration and the early exposure to milk substitutes are environmental factors associated to etiology of type 1 diabetes. Aim To study the frequency of the anti-GAD, anti-IA-2 e ICA antibodies in Chilean type 1 diabetic patients and determine the possible modulator effect of the breast feeding. Patients and methods: One hundred thirty four type I diabetic patients, aged one to 15 years old, were studied at the moment of their diagnosis. Patients were classified according to the duration of exclusive breast feeding. IA-2 and GAD were determined by radio immuno assay and ICA by means of indirect immunofluorescence. Results: Subjects with three months or less and those with more than three months of breast feeding were positive for ICA in 78.8 and 90.6 per cent of cases respectively, for GAD in 75 and 54.6 per cent of cases respectively (p=0.024) and for IA-2 in 73 and 43.8 per cent of cases respectively (p=0.001). All three antibodies were positive in 53.9 and 21.8 per cent of children with less or more than three months of breast feeding (p=0.001). Conclusion: Both IA-2 and GAD antibodies are less frequently positive in type 1 diabetic patients who have been breast fed for more than three months. These findings suggest a possible attenuating role of exclusive breast feeding on pancreatic aggression events in patients with type 1 diabetes


الموضوعات
Humans , Child, Preschool , Infant , Child , Male , Female , Autoantibodies/immunology , Breast Feeding , Diabetes Mellitus, Type 1/immunology , Autoimmunity/immunology , Islets of Langerhans/immunology , Glutamic Acid/immunology , Insulin Antibodies/immunology , Protein Tyrosine Phosphatases/immunology
4.
Arq. bras. endocrinol. metab ; Arq. bras. endocrinol. metab;37(3): 120-4, set. 1993. graf
مقالة ي البرتغالية | LILACS | ID: lil-150989

الملخص

O presente trabalho compara a incidência de auto-anticorpos anti-insulina (IAA) e anti-pró-insulina (PAA) em diabéticos do tipo I de início recente e em seus parentes de primeiro grau. Foram estudados 33 indivíduos normais (grupo I), 16 diabéticos do tipo I de início recente (grupo II) e 141 parentes em primeiro grau de diabéticos do tipo I (grupo III). Os IAA e PAA foram determinados pelo método de radioensaio, sendo considerados anormais níveis de IAA acima de 0,584 pmol/L e de PAA acima de 0,441 pmol/L. Näo foram observadas diferenças significantes quanto a idade e sexo entre os 3 grupos. Nos indivíduos normais os níveis de PAA foram significantemente menores do que os de IAA. Entre os diabéticos de início recente foi encontrada uma incidência de IAA de 37,5 por cento e de PAA de 25,0 por cento, näo ocorrendo, entretanto, diferenças significantes entre os níveis destes dois anticorpos. Entre os parentes em primeiro grau a incidência de IAA foi de 3,5 por cento e de PAA de 7,8 por cento, näo ocorrendo também diferenças entre os dois testes. Houve uma correlaçäo significante entre os níveis dos IAA e dos PAA no grupo de diabéticos de início recente (r=0,64; p < 0,05). Os IAA e PAA parecem estar dirigidos contra o mesmo determinante antigênico e, portanto, têm o mesmo valor preditivo para o DM tipo I


الموضوعات
Humans , Male , Female , Child, Preschool , Child , Adolescent , Adult , Middle Aged , Autoantibodies/immunology , Diabetes Mellitus, Type 1/immunology , Insulin Antibodies/immunology , Proinsulin/immunology , Diabetes Mellitus, Type 1/blood , Insulin Antibodies/blood , Predictive Value of Tests , Proinsulin/blood
5.
Arch. venez. pueric. pediatr ; 55(3): 97-102, jul.-sept. 1992. tab
مقالة ي الأسبانية | LILACS | ID: lil-157184

الملخص

En Venezuela no han sido reportados previamente los marcadores inmunológicos y genéticos en niños con Diabetes Mellitus tipo I durante el debut de la enfermedad. Nosotros tuvimos la oportunidad de estudiar a 27 niños recién diagnosticados con Diabetes Mellitus tipo I, con una edad promedio de 9.4+/- 3.2 años (Rango 1.3-14.9), 11 hembras y 16 varones. Ochenta y nueve por ciento tenían una historia familiar de Diabetes Mellitus (26 por ciento tipo I) 56.7 por ciento habían presentado una infección respiratoria superior previo al diagnóstico y 12.7 por ciento habían padecido de parotiditis o varicela. El pico de incidencia de la enfermedad fue durante los meses de febrero y octubre. Ochenta y nueve por ciento (24 pacientes) tenían HLD-DR3 y/o DR4 versus 37 por ciento observado en la población venezolana general; 86.1 por ciento (23 pacientes) fueron HLA-DQW2 y/o HLA DQS. Anticuerpos anti-islotes (ICA) fueron positivos en 37 por ciento (10 pacientes) y 4 de los mismos presentaron la prueba de fijación de complemento (CF/ICA) positiva. Tres pacientes presentaron anticuerpos anti-insulinicos. Solo 1 de 9 hermanos HLA idénticos al propósito presentó ICA positivo y CF/ICA positivo, y ésta niña desarrolló diabetes tipo I posteriormente. Se detectaron títulos de anticuerpos anti-virales significativamente positivos para citomegalovirus en 11 pacientes (40.7 por ciento); y títulos positivos para sarampión, parotiditis, herpes y varicela en un menor número de casos. No encontramos serotipos positivos a Coxsackie y Rubéola. Estos resultados confirman que la mayoría de nuestros diebéticos tipo I tiene HLA-DR3 oDR4 y que los fenotipos heterozigotos DR3/DR4 están significativamente aumentados en esta población. También podemos concluir que los haplotipos DR3DQW2 y DR4DQWS8 están asociados con un alto riesgo a desarrollar Diabetes Mellitus tipo I en nuestra población venezolana de origen étnico mixto


الموضوعات
Child, Preschool , Child , Humans , Male , Female , Antibodies, Viral/immunology , Insulin Antibodies/immunology , Child , Diabetes Mellitus, Type 1 , Genetic Markers , Immunogenetics , Serologic Tests
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