No abstract

Spinal cord injury is a serious disabling condition. Transplantation of olfactory ensheathing cells (OECs) is one of the most promising treatments for spinal cord injury (SCI). Thirty-nine patients with chronic SCI received OEC transplantation and completed long-term follow-up, with a minimum follow-up of 7 years. We assessed sensorimotor function with the American Spinal Injury Association (ASIA) Impairment Scale (AIS) and autonomic nervous function by the International Standards to document remaining Autonomic Function after Spinal Cord Injury (ISAFSCI), and sympathetic skin responses (SSR). The scores of each group were significantly higher after OECs transplantation than before treatment. SSR latencies were shorter and response amplitudes increased after treatment. Long-term follow-up showed further improvement only in motor function and autonomic function compared with 3 months postoperatively. No complications occurred in any patient during long-term follow-up. The results indicate that the transplantation of OECs in spinal cord restored function without serious side effects.

Transplantation of neural stem cells (NSCs) is one of the most promising treatments for spinal cord injury (SCI). However, the limited survival of transplanted NSCs reduces their therapeutic effects. The aim of the present study was to examine whether a co-transplantation of olfactory ensheathing cells (OECs) may enhance the survival of NSCs and improve the beneficial effects of NSCs in rats with SCI, as well as to investigate potential mechanisms underlying such efficacies. Co-transplantation of OECs and NSCs was used to treat rats with SCI. Sympathetic nerve function was determined by measuring sympathetic skin responses. The results showed that OEC/NSC co-transplantation improved motor function and autonomic nerve function in rats with SCI. Co-transplantation of OECs promoted NSC-induced neuroprotection and inhibited programmed necrosis of NSCs, which was mediated by receptor-interacting protein kinase 3 (RIP3) and mixed lineage kinase domain-like protein (MLKL). Furthermore, OECs increased the proliferation and differentiation of NSCs in vitro , and improved the survival rate of NSCs in vivo . Taken together, we conclude that transplantation of OECs inhibited programmed necrosis of co-transplanted NSCs to promote therapeutic effects on SCI. Therefore, co-transplantation of OECs and NSCs may represent a promising strategy for treating patients with SCI.

Background: Shoulder-hand syndrome (SHS) is a common complication in post-stroke patients. SHS has a large impact on patients and their families, communities, healthcare systems and businesses throughout the world. Non-pharmaceutical therapy for post-stroke SHS is the most common treatment in clinical practice, but their effectiveness is still unclear. The aim of this study is to assess the effect and safety of non-pharmaceutical therapeutic strategies for post-stroke SHS. Method: We will search 3 in English and 4 in Chinese languages electronic databases regardless of publication date or language. We will include randomized controlled trials (RCTs) assessing the effect of any non-pharmaceutical therapy for post-stroke SHS. Primary outcomes will be any effective instrument for post-stroke SHS. Two authors will independently assess the risk of bias by using Cochrane tool of risk of bias. We will perform network meta-analysis in random effects model to estimate the indirect and mixed effects of different therapeutic strategies by R-3.5.1 software. We will assess the confidence in cumulative evidence by Grading of Recommendations Assessment, Development and Evaluation. Results: This study will be to assess the effect and safety of non-pharmaceutical therapy for post-stroke SHS. Conclusions: This study will assess the effect of different non-pharmaceutical therapeutic strategies for post-stroke SHS and provide reliable evidence for the choice of treatments. Systematic review registration: PROSPERO (CRD42019139993).