Evidence suggests that plasticity of the amygdalar and hippocampal GABAergic system is critical for fear memory formation. In this study we investigated in wild-type and genetically manipulated mice the role of the activity-dependent 65-kDa isozyme of glutamic acid decarboxylase (GAD65) in the consolidation and generalization of conditioned fear. First, we demonstrate a transient reduction of G...

In the pilocarpine model of chronic limbic seizures, subpopulations of glutamic acid decarboxylase (GAD)-containing neurons within the hilus of the dentate gyrus and stratum oriens of the CA1 hippocampal region are vulnerable to seizure-induced damage. However, many gamma-aminobutyric acid (GABA) neurons remain in these and other regions of the hippocampal formation. To determine whether long-t...

OBJECTIVE Thyroid diseases are common in individuals with type 1 diabetes mellitus (T1DM) and should be investigated annually in these individuals. The aim of this study was to evaluate the frequency of thyroid diseases in first degree relatives (FDR) of patients with T1DM. SUBJECTS AND METHODS Eighty individuals (40 patients with T1DM and 40 FDR) were interviewed and blood was sampled for th...

Clinically, type 1 diabetes may presents as type 2 diabetes which sometimes not easily differentiated. Perhaps only autoimmune markers of -cells destruction could differentiate those two clinical conditions. Due to extremely high cost ( $ 150/test), examination of anti-glutamic acid decarboxylase-65 auto-antibodies (anti-GAD65Abs) may not be routinely performed in most, if not all, clinical la...

Progressive myoclonus epilepsy of the Unverricht–Lundborg type is a raredisorder associated with mutations in gene encoding the cystatin B, an inhibitorof cysteine proteases. Cystatin B knockout mice share phenotype with humandisease demonstrating similarly the myoclonic seizures, progressive ataxia andneuronal atrophy in hippocampus and cerebellum. We used liquid chromatographi...

We studied the distribution of the M(r) 65,000 and M(r) 67,000 isoforms of glutamic acid decarboxylase, GAD65 and GAD67, in rat islets and brain by immunocytochemistry. Synthetic peptides representing selected GAD65 or GAD67 sequences were used to produce sequence-specific antibodies, allowing differential immunocytochemical detection of the two isoforms. GAD-specific reactivity of each peptide...

We report the case of a 59-year-old woman who developed rapid-onset type 1 diabetes associated with a marked increase in anti-glutamic acid decarboxylase antibody titer (317.5 U/ml), mild increase in HbA1c level (6.8%), diabetic ketoacidosis, and cytomegalovirus enterocolitis. She was a heterozygote for HLA class II DRB1*0901-DQA1*03-DQB1*0303, and she had HLA class I A24, which may have contri...

Wild bank voles (Clethrionomys glareolus) may develop diabetes in laboratory captivity. The aim of this study was to test whether bank voles develop type 1 diabetes in association with Ljungan virus. Two groups of bank voles were analyzed for diabetes, pancreas histology, autoantibodies to glutamic acid decarboxylase (GAD65), IA-2, and insulin by standardized radioligand-binding assays as well ...

As an autoimmune disease, type 1 diabetes mellitus (DM) can be associated with other autoimmune disorders. The aim of this study was to detect subclinically associated autoimmune thyroid disease, coeliac disease, and Addison's disease. The presence of autoantibodies was evaluated with special regard to the control of diabetes and to the clinical status of the patient. Fifty-one type 1 diabetic ...