Receptor-interacting protein kinase 1 (RIPK1) plays an essential role in regulating the necroptosis and apoptosis in cerebral ischemia-reperfusion (I/R) injury. However, the regulation of RIPK1 kinase activity after cerebral I/R injury remains largely unknown. In this study, we found the downregulation of protein arginine methyltransferase 1 (PRMT1) was induced by cerebral I/R injury, which negatively correlated with the activation of RIPK1. Mechanistically, we proved that PRMT1 directly interacted with RIPK1 and catalyzed its asymmetric dimethylarginine, which then blocked RIPK1 homodimerization and suppressed its kinase activity. Moreover, pharmacological inhibition or genetic ablation of PRMT1 aggravated I/R injury by promoting RIPK1-mediated necroptosis and apoptosis, while PRMT1 overexpression protected against I/R injury by suppressing RIPK1 activation. Our findings revealed the molecular regulation of RIPK1 activation and demonstrated PRMT1 would be a potential therapeutic target for the treatment of ischemic stroke.

Objective To analyze the effect of night-shift work, anxiety and their interaction on work-related musculoskeletal disorders (WMSDs) among electronics manufacturing employees. Methods A total of 2 676 employees from 58 electronic manufacturing enterprises in the Pearl River Delta region of Guangdong Province were selected as the research subjects using the judgment sampling method. The Basic Situation Survey Scale, Generalized Anxiety Disorder 7-item Scale and Questionnaire of Musculoskeletal Disorders were used to assess night-shift work, anxiety and the prevalence of WMSDs in employees. The multivariate logistic regression model was used to analyze the effects of night-shift work, anxiety and their combined effects on the risk of WMSDs. Results The proportion of night-shift work was 30.3%, and the detection rates of anxiety and WMSDs were 26.8% and 41.3%, respectively. The results of multivariate logistic regression analysis showed that night-shift work and anxiety were independent risk factors of WMSDs in the research subjects, after excluding the influence of confounding factors such as age, marital status, enterprise size and length of service [odds ratio (OR) and 95% confidence interval (CI) were 1.307 (1.092-1.564) and 3.282 (2.739-3.934), respectively, both P<0.01]. Compared with those without night-shift work or anxiety, the risk of WMSDs was higher in individuals with only night-shift work, only anxiety, or both night-shift work and anxiety [OR and 95%CI were 1.347 (1.091-1.663), 3.395 (2.727-4.227) and 4.117 (3.072-5.519), respectively, all P<0.01]. Conclusion Both night-shift work and anxiety can increase the risk of WMSDs among electronic manufacturing employees, and these two factors exhibit a synergistic effect in increasing the risk of WMSDs.

Object Bibliometrically analyzed are the medical papers of Huai'an First People's Hospital from 2002 to 2011 on CBMdisc.Methods Our own program and excel 2007 are used to statistically analyze the annual change,distribution of periodicals,authors,department,fund papers as well as citations of medical papers published by staff of Huai'an First Hospital in 10 years.Results 1935 Chinese papers were published from 2002 to 2011.However,Huai'an First Hospital began to publish SCI papers since 2009,a total of 24,accounting for only 1.23％ of the total number of papers in English.According to Price's law,there are 136 core authors who published nearly half of Chinese papers(955).The two bright academic leaders Li Yufeng and Yu Liang in Hematology swept a quarter of SCI papers.All the 136 core authors and two academic leaders are well deserved scientific research backbones of our hospital.Chinese papers' total cited rate is 47.29 ％,cited frequency 2.99 times.SCI papers' cited rate is 75％,cited frequency 2.83 times.Conclusions The amount of papers,amount of papers published on core journals and SCI papers volume increased year by year.But there is a great disparity of proportion between the amount of papers published on domestic journals and SCI papers volume.It is necessary to improve papers quality.