[Daily dynamics of time perception in bipolar II disorder patients with redarted or anxious depression]. / Dnevnaya dinamika vospriyatiya vremeni pri zatormozhennoi i trevozhnoi depressii u bol'nykh bipolyarnym rasstroistvom II tipa.

AIM: It is known affective disorders are changing the perception of time. The study of time perception in patients with affective disorders enables researchers to make early diagnostic criteria for these conditions, as well as to shed light on possible mechanisms for the development of affective disorders. MATERIAL AND METHODS: 20 patients with bipolar affective disorder type II in accordance with the DSM-5 criteria (10 patients with a predominance of anxiety and 10 patients with a predominance of psychomotor retardation) and 10 healthy subjects were recruited to the study. Test for measuring minute was conducted from 7 hours to 21 hours with an interval of 2 hours. Patients were distributed into two experimental groups in accordance with the severity ratio of psychomotor retardation and anxiety. All patients were on monotherapy with agomelatine in a single dose 25-50 mg/day. RESULTS AND CONCLUSION: Duration of individual minute, was significantly shorter in the experimental groups compared with the control group and did not differ within experimental groups. In the group of healthy volunteers length of individual minutes was close to «AIM: minute, i.e. 60 seconds, in groups of patients with prevalence of anxiety and a predominance of psychomotor retardation length of individual minutes was set to about 40 seconds and did not differ significantly in patients groups. In patients with retarded depression distribution of a minute duration peaks was shifted for 2 hours late (13-17 h) comparing to controls, in anxious depresssion the distribution was bimodal with peaks in 10 and 18 hours. There were no singnificant differences between groups. Shorter duration of individual minute in patients with recurrent depressive episodes, may be an early sign of a new depressive episode.

Hypoxia level and matrix metalloproteinases-2 and -9 activity in Lewis lung carcinoma: correlation with metastasis.

AIM: To investigate the relationship between tumor hypoxia in vivo, activity of matrix metalloproteinases (MMPs), and metastatic potential of tumor. MATERIALS AND METHODS: Lewis lung carcinoma (3LL) was used in this study. Total activity of MMP-2 and -9 in tumor was measured biochemically, tumor hypoxia level was assessed by (31)P NMR spectroscopy in tissue perchloric extracts. RESULTS: It was determined that hypoxia level in primary tumor has been concomitantly increasing along with tumor growth and correlated with metastasis level in lung. The positive correlation between hypoxia level and activities of MMP-2 and MMP-9 in primary tumor was registered. Moreover, the activity of MMP-2 and -9 in 3LL (primary tumor) directly correlates with metastasis level in lung. CONCLUSION: This study demonstrated that the growth of primary tumor is distinctly accompanied by an increase of tumor hypoxia level which positively correlates both with the activity of MMP-2 and -9 in primary tumor and metastatic efficiency.