Dimitrios Chatzistefanidis

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Metabolism of valproic acid, a widely used drug, is only partially understood. It is mainly metabolized through glucuronidation and acts as a substrate for various UDP-glucuronosyltransferases (UGTs). UGTs metabolizing valproic acid in the liver are UGT1A3, UGT1A4, UGT1A6, UGT1A9 and UGT2B7, with UGT1A6 and UGT2B7 being the most prominent. Polymorphisms in(More)
OBJECTIVE To evaluate whether epilepsy or certain antiepileptic drugs render patients prone to develop low bone mineral density (BMD) and osteoporosis risk. METHODS Thirty-eight (27 males, 11 females) consecutive adult epileptic patients receiving antiepileptic drugs (AEDs) and 71 control individuals matched for race, gender, age and body mass index (BMI)(More)
BACKGROUND AND PURPOSE Apolipropotein E(apoE) is a plasma protein exhibiting three common isoforms (E2, E3, E4). Its involvement in lipoprotein metabolism may have an impact on stroke occurrence. As results in the literature are inconclusive further studies are needed to elucidate its role. Our objective was to study the role of apoE isoforms and the(More)
Lafora disease (LD; OMIM 254780), one of the genetic progressive myoclonus epilepsies (PME), is a fatal autosomal recessive disorder. LD is characterized by periodic acid-Schiff positive (PAS+) staining intracellular inclusion bodies, which are pathognomic of the disease. Symptoms of LD are expressed in early adolescence and include generalized, mostly(More)
Limbic encephalitis (LE) is rare, presents with memory impairment, seizures and behavioral disorder. We present a 44-year-old female with an agitation-depressive disorder associated with delusions and hallucinations, admitted to our hospital with the diagnosis of psychosis. A computed tomography (CT) scan of the brain and lumbar puncture on admission were(More)
BACKGROUND Mirtazapine is an antidepressant blocking presynaptic alpha2-adrenergic receptors and an antagonist of 5-hydroxytryptamine 2A/2C, 5-hydroxytryptamine 3, and histaminergic (H) postsynaptic receptor. Acute dystonia restless legs syndrome (RLS) and manic syndromes are adverse effects of mirtazapine, whereas only few cases of acute akathisia, after(More)
PURPOSE The therapeutic equivalence of generic and brand antiepileptic drugs, based on studies performed on healthy volunteers, has been questioned. We compare, in a routine clinical setting, brand versus generic levetiracetam (LEV) bioequivalence in patients with epilepsy and also the clinical efficacy and tolerability of the substitution. METHODS A(More)
Raising interest towards genes implicates the effect of estrogen receptor-alpha (ESR1) gene on cerebrovascular disease, but data are lacking regarding the effect of estrogen receptor-beta (ESR2) gene. We assessed the hypothesis that AluI (G/A) polymorphism of the ESR2 gene (rs 4986938) is associated with ischemic stroke in a Caucasian population. Four(More)
Lacosamide (LCM) is a newer antiepileptic drug with a favorable safety profile used in partial epilepsy as adjunctive therapy. The most common side effects include dizziness, headache, confusion, diplopia, nausea, nasopharyngitis, and vomiting. Although sporadic cases of drug-induced psychosis have been reported for some antiepileptic drugs, this was not(More)
AIM The role of UGT1A6 and UGT2B7 polymorphisms and the impact of total drug plasma concentration in valproic acid (VPA) pharmacogenomics. PATIENTS & METHODS A total of 134 Greek patients were recruited (76 adults). Patients were genotyped for UGT1A6 19T>G, 541A>G and 552A>C and UGT2B7 802T>C polymorphisms. Patients' demographic and clinical data were(More)
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