Jan Aleksander Beszłej

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There are studies showing that gene polymorphisms within the transforming growth factor-β (TGF-β) signaling constitute schizophrenia risk variants. However, the association between TGFB1 gene polymorphisms (+869T/C and +915G/C), TGF-β level with schizophrenia course, and its symptomatology together with cognitive functioning has not been investigated so(More)
The influence of the immune system deregulation on the risk of schizophrenia is increasingly recognized. The aim of this study was to assess the influence of serum interleukin-6 (IL-6) level together with the polymorphism in its gene (IL6 -174G/C) and high sensitivity C-reactive protein (hsCRP) levels on clinical manifestation and cognition in schizophrenia(More)
We aimed to investigate whether antipsychotics differentially impact insight and whether these effects appear because of improvement in psychopathological manifestation in 132 first-episode schizophrenia patients and 201 acutely relapsed schizophrenic patients, who were followed up for 12 weeks. Olanzapine and risperidone were administered to first-episode(More)
The aim of this study was to compare cognitive performance between schizophrenia patients with and without treatment resistance (TRS and non-TRS patients) taking into account psychopathological symptoms and antipsychotic treatment. The following cognitive tests were administered to 53 TRS patients and 32 non-TRS subjects: Rey Auditory Verbal Learning Test(More)
BACKGROUND Accumulating evidence indicates that immune alterations in schizophrenia are due to genetic underpinnings. Here, we aimed at investigating whether polymorphisms in CTLA4 and CD28 genes, encoding molecules that regulate T-cell activity, influence schizophrenia symptomatology. METHOD We recruited 120 schizophrenia patients and 380 healthy age-(More)
AIM Genetically determined activity ofCYP2D6 may be modified by some drugs through inhibition processes. Inhibition properties of TCA's were confirmed mainly in in vitro studies. The aim of the study was to assess the influence of clomipramine on CYP2D6 activity in vivo. METHOD 11 patients diagnosed with depression according to ICD-10 and DSM-IV (major(More)
The authors describe the case of a female patient with the diagnosis of schizophrenia and the CYP2D6 poor metaboliser phenotype (PM phenotype), who experienced severe extrapyramidal side effects, including acute dystonia, while being treated with chloropromazine at 100 mg per day (in the third day of therapy). The CYP2D6 phenotype was determined using the(More)
AIM Assessment of efficacy and tolerability of quetiapine in treatment of schizophrenia. METHOD Patients with a diagnosis of schizophrenia (according to ICD-10, DSM-IV) were included in the 12-weeks open study. Severity of schizophrenia symptoms was evaluated using the PANSS Scale. Adverse events have been assessed according to The Adverse Events(More)
Cytochrome 2D6 catalyzes oxidation processes of many antidepressants (TCAs, SSRIs, maprotyline, mianserine, nefazodon, trazodon, venlafaxine). CYP2D6 is characterized by genetically determined polymorphism which may lead to serious clinical consequences. Based on CYP2D6 activity four phenotypes are distinguished: poor metabolism (PM), intermediate (IM),(More)