1.Discussion on emergency equipment dynamic deployment assessment mode
Zhongwei JIANG ; Jun ZHANG ; Zhejun WU
China Medical Equipment 2015;(3):96-97
Objective:According to the existing hospital static mixing method, the problem of dynamic allocation model for half a year period is put forward, in order to solve emergency equipment safe are deployed in a timely manner. Methods: The hospital can allocate all emergency equipment evaluation, grade and tabulation, according to the score for sorting, system of sorting table provides emergency center allocate use half a year. Results: According to the deployment of table realized in emergency equipment safety in time in case of major events are deployed and able to skillfully use effect. Conclusion: The use of emergency equipment dynamic allocation model can not only improve the social benefit of the hospital, and reduce the pressure of the functions of the hospital departments.
2.Ablation of adenosine monophosphate-activated protein kinaseα1 in vascular smooth muscle cells promotes diet-induced atherosclerotic calcification in vivo
Zhejun CAI ; Ye DING ; Miao ZHANG ; Qiulun LU ; Shengnan WU ; Huaiping ZHU ; Ping SONG ; Minghui ZOU
Chinese Journal of Pathophysiology 2016;32(8):1493-1493,1494
AIM:Atherosclerotic calcification is highly linked with plaque instability and cardiovascular events .Adenosine monophosphate-activated protein kinase ( AMPK) has been involved in the pathogenesis of various cardiovascular disease .The contributions of AMPKαsubunits to the development of atherosclerotic calcification in vivo remained unknown .We hypothesized that AMPKαsubunits may play a role in the development of atherosclerotic calcification .METHODS: Atherosclerotic calcification was generated by 24-week fed of western diet in ApoE-/-background mice .Calcification was evaluated in aortic roots and innominate arteries of ApoE-/-mice or in mice with dual deficiencies of ApoE and AMPKαsubunits globally ( AMPKα1 and AMPKα2 ) , or vascular smooth muscle cell ( VSMC)-specific or macrophage-specific knockout of AMPKα1 with atherosclerotic calcification pone diet . The mechanism of AMPKα1 in regulating Runx2 was further explored in human aortic VSMC .RESULTS: Ablation of AMPKα1 but not AMPKα2 in ApoE-/-background promoted atherosclerotic calcification with increased Runt -related transcription factor ( Runx2 ) expression in VSMC compared with ApoE-/-mice.Conversely, chronic administration of metformin, which activated AMPK, markedly reduced ath-erosclerotic calcification and Runx2 expression in ApoE-/-mice but had less effects in ApoE-/-/AMPKα1 -/-mice.Furthermore, VSMC-but not macrophage-specific deficiency of AMPKα1 in ApoE-/-background promoted atherosclerotic calcification in vivo com-pared with the controls .AMPKα1 silencing in human aortic VSMC prevented Runx 2 from proteasome degradation to trigger osteoblastic differentiation of VSMC .Conversely , activation of AMPK led to Runx 2 instability by inducing its small ubiquitin-like modifier modifi-cation (SUMOylation).Protein inhibitor of activated STAT-1 (PIAS1), the SUMO E3-ligase of Runx2, was directly phosphorylated by
AMPKα1 at serine 510, to enhance its SUMO E3-ligase activity.Ablation of PIAS1 serine 510 phosphorylation inhibited metformin-in-duced Runx2 SUMOylation, and subsequently prevented the effect of metformin on reducing oxLDL-triggered Runx2 expression in hu-man aortic VSMC.CONCLUSION:Deficiency of AMPKα1 in VSMC increases Runx2 expression and promotes atherosclerotic calcifi-cation in vivo.AMPKα1 phosphorylates PIAS1 to enhance Runx2 SUMOyalation and subsequent degradation .
3.Hyperthermia differentially affects specific human stem cells and their differentiated derivatives.
Si WANG ; Fang CHENG ; Qianzhao JI ; Moshi SONG ; Zeming WU ; Yiyuan ZHANG ; Zhejun JI ; Huyi FENG ; Juan Carlos Izpisua BELMONTE ; Qi ZHOU ; Jing QU ; Wei LI ; Guang-Hui LIU ; Weiqi ZHANG
Protein & Cell 2022;13(8):615-622
4.Exosomes from antler stem cells alleviate mesenchymal stem cell senescence and osteoarthritis.
Jinghui LEI ; Xiaoyu JIANG ; Wei LI ; Jie REN ; Datao WANG ; Zhejun JI ; Zeming WU ; Fang CHENG ; Yusheng CAI ; Zheng-Rong YU ; Juan Carlos Izpisua BELMONTE ; Chunyi LI ; Guang-Hui LIU ; Weiqi ZHANG ; Jing QU ; Si WANG
Protein & Cell 2022;13(3):220-226
5.Large-scale chemical screen identifies Gallic acid as a geroprotector for human stem cells.
Hezhen SHAN ; Lingling GENG ; Xiaoyu JIANG ; Moshi SONG ; Jianxun WANG ; Zunpeng LIU ; Xiao ZHUO ; Zeming WU ; Jianli HU ; Zhejun JI ; Si WANG ; Piu CHAN ; Jing QU ; Weiqi ZHANG ; Guang-Hui LIU
Protein & Cell 2022;13(7):532-539