[Peculiarities of Platelet Activation Changes in Patients with Chronic Schizophrenia, Depending on the Severity of Positive and Negative Symptoms during the Remission Formation].

Objective: The aim of our study was to compare the changes in the severity of positive, negative and psychopathological PANSS symptoms which occur at an outcome of an attack in schizophrenic patients along with remission formation and the degree of platelet activation in these patients.

Methods: Psychometric scale of the Positive and Negative Syndrome Scale (PA NSS) and the method of estimation of platelet activation based on the calculation of cells number after elution from the column with sepharose CL-2B were used.

Results: The changes in the severity of the disease were estimated using the PANSS scale of chronic schizophrenic patients in remission formation.

[Platelet activity in the chronic schizophrenic patients during attacks outcome and remission development].

The purpose of this work was to evaluate the degree of activation of platelets chronically schizophrenic patients with paroxysmal course of the disease during outcome from the attack of disease or in process of forming of the remission. Platelets in platelet-rich-plasma (PRP) and after PRP gel-filtration through the column with Sepharose CL-2B taken from the ulnar vein of males with chronic schizophrenia during outcome from the attack of disease or in process of forming of the remission were measured. Patients were investigated on the peak of the disease attack (visit 1), at the stage of significant improvement of clinical state (visit 2), and at the stage of stable drug-induced remission (visit 3).

[Interaction effect of serotonin transporter gene and brain-derived neurotrophic factor on the platelet serotonin content in stroke patients].

Platelet serotonin content in patients in the acute period of stroke is an important index of clinical changes during the post stroke period as well as a predictor of development of mental disorders. We studied the association between two polymorphisms (5-HTTLPR and Val66Met BDNF) and the platelet serotonin content in 47 patients with stroke. We also investigated the moderating effect of genetic variants on the association between platelet serotonin content and development of affective and anxiety disorders in stroke patients in the acute period of stroke.

[Platelet peculiarities in chronic schizophrenic patients].

A comparative study of the platelet resistance to different effects was conducted in patients with chronic schizophrenia and healthy controls using column chromatography on sepharose CL-2B with the incubation at 5 degrees C during 18 h. This method allows to reveal the greater platelet activation in patients compared to the controls. The platelet number in platelet rich plasma (PRP) obtained by centrifugation was 1,8 times less in male patients with chronic schizophrenia than in the controls.

[Platelet serotonergic parameters and clinical symptoms of psychosis in patients with episodic progressive schizophrenia].

A sample included 59 patients, 38 males and 21 females, mean age (M+/-SD) 33,4+/-10,2 years, age-at-onset 26+/-9,5 years, illness duration 7,8+/-6,1 years, with episodic progressive schizophrenia (ICD-10: schizophrenia, paranoid type, F20.0) with continuous course at the stage of exacerbation. Clinical symptoms were assessed using the PANSS.