Purpose Stroke is a disease associated with high mortality. Many inflammatory indicators such as neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), lymphocyte to monocyte ratio (LMR) and red blood cell distribution width (RDW) have been documented to predict stroke prognosis, their predictive power is limited. A novel inflammatory indicator called systemic inflammatory response index (SIRI) has been advocated to have an essential role in the prognostic assessment of cancer and infectious diseases. In this study, we attempted to assess the prognosis of stroke by SIRI. Moreover, we compared SIRI with other clinical parameters, including NLR, PLR, LMR and RDW. Methods This was a retrospective cohort study. We obtained data of 2450 stroke patients from the Multiparametric Intelligent Monitoring in Intensive Care III database. We used the Cox proportional hazards models to evaluate the relationship between SIRI and all-cause mortality and sepsis. Receiver operating curve (ROC) analysis was used to assess the predictive power of SIRI compared to NLR, PLR, LMR and RDW for the prognosis of stroke. We collected data of 180 patients from the First Affiliated Hospital of Wenzhou Medical University, which used the Pearson’s correlation coefficient to assess the relationship between SIRI and the National Institute of Health stroke scale (NIHSS). Results After adjusting multiple covariates, we found that SIRI was associated with all-cause mortality in stroke patients. Rising SIRI accompanied by rising mortality. Besides, ROC analysis showed that the area under the curve of SIRI was significantly greater than for NLR, PLR, LMR and RDW. Besides, Pearson’s correlation test confirmed a significant positive correlation between SIRI and NIHSS. Conclusion Elevated SIRI was associated with higher risk of mortality and sepsis and higher stroke severity. Therefore, SIRI is a promising low-grade inflammatory factor for predicting stroke prognosis that outperformed NLR, PLR, LMR, and RDW in predictive power.

Background: Post-stroke depression(PSD) lacks timely and effective treatment and virtual reality (VR) technology can create a lifelike experience and simulate users' physical presence in an immersive environment. It has been confirmed to have a positive effect on stroke and depression. Data about the efficacy VR on PSD are limited. The intensification of fibroblast growth factor 21(FGF21) can improve depression and other emotional symptoms, but there is no study on its role in PSD.Methods: We enlisted 76 PSD patients (6 lost) and divided into the experimental group and control group randomly. The patient underwent psychological rehabilitation once a week for 50 minutes each time for a total of 12 weeks. The patients in the experimental group received psychological counseling and VR rehabilitation while patients in the control group also took the same pattern but without VR rehabilitation. The Hamilton Depression Scale (HAMD) and Hamilton Anxiety Scale (HAMA) were evaluated before rehabilitation, in the 4th week and at the end of rehabilitation respectively in two groups for the sake of observing changes in the patients' depression. Then 8 people in each group did functional near-infrared spectroscopy (fNIRS), and blood samples were taken for detection with brain-derived neurotrophic factor (BDNF), IL-6, TNF-α and FGF21 by ELISA.Results: The result of fNIRS showed the hemodynamic activation in the prefrontal region of the experimental group was significantly increased. Both groups of FGF21 increased and compared with the control group, the experimental group has a greater upsurge and a faster increase rate.Conclusions: VR alleviates PSD. FGF21 is closely related to PSD，and it is likely to be a potential pathological mechanism of PSD. It suggests that VR is possible to improve PSD by increasing FGF21.Trial registration: We registered in Chinese Clinical Trial Registry which is the first level registration organization of WHO international clinical trial registration platform. The registration number is ChiCTR1900027987, the date of registration December 7, 2019.

No abstract