[Influence of psychiatric diseases and psychiatric medication to the severity of clinical outcome of COVID-19].

Initially, it had been assumed that in cases of SARS-CoV-2 infection comorbidity with psychiatric disorders worsens clinical outcomes. This was attributed to patients' poor overall health conditions, concomitant illnesses and unhealthy lifestyles. However, only schizophrenia is in a statistically significant correlation with very serious conditions leading to death, possibly as a result of underlying immune dysfunctions. Clozapine (an antipsychotic used in therapy of treatment resistant schizophrenia) seems to decrease the likelihood of recovery in COVID-19 patients, however admi nistration of antidepressant medications appears to increase it. It has also been justified that among these antidepressant drugs, fluvoxamin shows to have an effect in inhibiting cytokine storms and reducing the severity of the COVID-19 infection. Most recent data suggest that the well-known antiviral effect of lithium is also present in patients with COVID-19 infection.

Beneficial effects of remote organ ischemic preconditioning on micro-rheological parameters during liver ischemia-reperfusion in the rat.

BACKGROUND: Remote ischemic preconditioning (RIPC) can be protective against the damage. However, there is no consensus on the optimal amount of tissue, the number and duration of the ischemic cycles, and the timing of the preconditioning. The hemorheological background of the process is also unknown. OBJECTIVE: To investigate the effects of remote organ ischemic preconditioning on micro-rheological parameters during liver ischemia-reperfusion in rats. METHODS: In anesthetized rats 60-minute partial liver ischemia was induced with 120-minute reperfusion (Control, n = 7). In the preconditioned groups a tourniquet was applied on the left thigh for 3×10 minutes 1 hour (RIPC-1, n = 7) or 24 hours (RIPC-24, n = 7) prior to the liver ischemia. Blood samples were taken before the operation and during the reperfusion. Acid-base, hematological parameters, erythrocyte aggregation and deformability were tested. RESULTS: Lactate concentration significantly increased by the end of the reperfusion. Erythrocyte deformability was improved in the RIPC-1 group, erythrocyte aggregation increased during the reperfusion, particularly in the RIPC-24 group. CONCLUSIONS: RIPC alleviated several hemorheological changes caused by the liver I/R. However, the optimal timing of the RIPC cannot be defined based on these results.