RESUMO
The diagnostic value of glutamic acid decarboxylase antibody (GAD 65-Ab) was more valuable than islet cell antibody (ICA) in type 1 diabetes mellitus by receiver-operating characteristic (ROC) curves; likelihood ratios of different regions of GAD 65-Ab and ICA could reflect the probability of type 1 diabetes mellitus.
RESUMO
Objective To study the characteristics of ? cell function change and to explore the predictive value of glutamic acid decarboxylase (GAD)-Ab and other factors for ? cell function in the patients with latent autoimmune diabetes of adults (LADA). Methods Sixteen LADA patients (positive GAD-Ab) and 24 type 2 diabetic patients (negative GAD-Ab) were followed-up at 0, 6th, 12th, 30th, 36th, 42th and 48th months respectively. Their fasting and postprandial 2h C-peptide and glycemic control were measured. GAD-Ab was determined by radioimmunoprecipitation assay and C-peptide by RIA. Results Decreased fasting C peptide (FCP) levels (Month 30, 36, 42, 48 compared with Month 0, P