Subtipos no clásicos de diabetes mellitus / Non classical subtypes of diabetes mellitus
Rev. méd. Chile
;
129(8): 853-860, ago. 2001. tab
Artigo
em Espanhol
| LILACS
| ID: lil-300145
RESUMO
Background:
Some adult, obese and diabetic patients, initiate their disease with a severe diabetic ketoacidosis without a precipitating factor and do not require insulin thereafter. These patients are classified as having a non classical diabetes mellitus.Aim:
To study the clinical, immunological, genetic and metabolic features of patients with non classical diabetes mellitus. Patients andmethods:
Ten patients (9 men, aged 45ñ12 years old) with non classical diabetes mellitus were studied. Anti islet and anti glutamic acid decarboxylase antibodies (ICA and anti GAD), HLA DQ a arginine 52 and non aspartic ß57 were measured. Insulin secretion was measured by C peptide after glucagon injection and with the minimal model of Bergman. The latter model was also used to determine insulin sensitivity.Results:
Three patients were immunologically classified as type 1, since they had positive ICA or antiGAD antibodies and type 1 genetics (neutral or susceptible HLA DQ a and ß). They had insulin secretion after glucagon stimulus (C peptide ranging from 2.2 to 7.5 pmol/ml), but an almost absent response to a glucose load. They were also insulin resistant (a sensitivity index ranging from 0.05 to 1.67 x 10-4 min/µU x ml). These three cases could be categorized as latent type 1. The other seven patients were ICA negative and antiGAD negative. Five had a susceptible HLA genotype for type 1 diabetes and two were neutral. All had insulin secretion after glucagon stimulation and a variable response to glucose. Six were insulin resistant (sensitivity index ranging from 0.32 to 1.29 x 10-4 min/µU x ml). One patient was insulin sensitive (sensitivity index of 3.83 x 10-4 min/µU x ml). Therefore all these patients were classified as type two diabetics with an atypical debut.Conclusions:
Not all diabetics presenting with a severe diabetic ketoacidosis are type I. Among these, there are subjects with a latent type 1 diabetes or with an atypical type 2 diabetes
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Diabetes Mellitus Tipo 1
/
Diabetes Mellitus Tipo 2
Tipo de estudo:
Estudo de etiologia
/
Estudo prognóstico
Limite:
Adulto
/
Feminino
/
Humanos
/
Masculino
Idioma:
Espanhol
Revista:
Rev. méd. Chile
Assunto da revista:
Medicina
Ano de publicação:
2001
Tipo de documento:
Artigo
/
Documento de projeto
País de afiliação:
Chile
Instituição/País de afiliação:
Hospital San Juan de Dios/CL
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