1.Application of Management Information System for Medical High-value Consumables in Operation Room
Lifang WEN ; Meixian ANG ; Junlan LIU ; Dongxue HAN
Chinese Medical Equipment Journal 1989;0(02):-
Objective To make the management responsibility clear for guarding against the lacking of legal basis in patient lawsuits.Methods An implantable coding database for medical consumables was set.Barcode on packaging bag was scanned in 'information system'.'secondary management database for high-value consumables' was set in operation room.According to a warehouse-out list,the warehouse was checked monthly.Results The flow of all consumables was controlled.Conclusion Operational links are reduced and work efficiency is improved.Besides,the transparency of charges is increased.[Chinese Medical Equipment Journal,2008,29(2):64-65]
2.Screening for urine biomarkers in steroid-resistant nephrotic syndrome using SELDI-TOF-MS
Mei YANG ; Wenjun LIU ; Qulian GUO ; Junhong CHEN ; Han SHI ; Meixian HUNAG
Journal of Clinical Pediatrics 2010;(2):183-186
Objective To screen for biomarkers in urine from patients with steroid-resistant nephrotic syndrome (SRNS) using surface-enhanced laser desorption ionization time-of-flight mass spectrometry (SELDI-TOF-MS) Proteinchip technology. Methods Urine samples from 9 SRNS patients, 32 steroid-sensitive nephrotie syndrome (SSNS) patients and 45 normal controls were analyzed using UA gold chip. Proteomic spectra were generated by mass spectrometry. Results Four differentially expressed biomarkers were identified with relative molecular weight of 6 703, 7 212, 11 820, 14 356. It was found that these protein peaks with relative molecular weigh of 7 212, 11 820, 14 356 were highly expressed in SRNS and 6 703 were lowly expressed in SRNS. The diagnostic cast that is constructed with these four protein to differentiate SRNS from SSNS with sensitivity of 88.89% and specificity of 93.75%. Conclusions SELDI-TOF-MS Proteinchip technology is a non-invasive, quick, easy, and convenient, and high-throughput analyzing method capable of screening several biomarkers from the urines of SRNS patients and has better clinical value.
3.Exploring Flow and Supervision of Medical Instruments by Standing on Frontier of the Reform of Free Trade Zone
Jianhua SHEN ; Meixian HAN ; Fei LU
Chinese Journal of Medical Instrumentation 2017;41(6):436-439,457
Shanghai Waigaoqiao Free Trade Zone as one of the special customs supervision areas of China (Shanghai) free trade pilot area, gathered a large number of general agent enterprises related to medical apparatus and instruments.This article analyzes the characteristics of special environment and medical equipment business in Shanghai Waigaoqiao Free Trade Zone in order to further implement the national administrative examination and approval reform. According to the latest requirement in laws and regulations of medical instruments, and trend of development in the industry of medical instruments, as well as research on the basis of practices of market supervision in countries around the world, this article also proposes measures about precision supervision, coordination of supervision,classification supervision and dynamic supervision to establish a new order of fair and standardized competition in market, and create conditions for establishment of allocation and transport hub of international medicine.
4.IKKβ mediates homeostatic function in inflammation via competitively phosphorylating AMPK and IκBα.
Juan LIU ; Yuxin ZHUANG ; Jianlin WU ; Qiang WU ; Meixian LIU ; Yue ZHAO ; Zhongqiu LIU ; Caiyan WANG ; Linlin LU ; Yingjiao MENG ; Kawai LEI ; Xiaojuan LI ; Qibiao WU ; Elaine Lai-Han LEUNG ; Zhengyang GUO ; Liang LIU ; Ting LI
Acta Pharmaceutica Sinica B 2022;12(2):651-664
Inhibitor of nuclear factor kappa-B kinase subunit beta (IKKβ) is one of important kinases in inflammation to phosphorylate inhibitor of nuclear factor kappa-B (IκBα) and then activate nuclear factor kappa-B (NF-κB). Inhibition of IKKβ has been a therapeutic strategy for inflammatory and autoimmune diseases. Here we report that IKKβ is constitutively activated in healthy donors and healthy Ikkβ C46A (cysteine 46 mutated to alanine) knock-in mice although they possess intensive IKKβ-IκBα-NF-κB signaling activation. These indicate that IKKβ activation probably plays homeostatic role instead of causing inflammation. Compared to Ikkβ WT littermates, lipopolysaccharides (LPS) could induce high mortality rate in Ikkβ C46A mice which is correlated to breaking the homeostasis by intensively activating p-IκBα-NF-κB signaling and inhibiting phosphorylation of 5' adenosine monophosphate-activated protein kinase (p-AMPK) expression. We then demonstrated that IKKβ kinase domain (KD) phosphorylates AMPKα1 via interacting with residues Thr183, Ser184, and Thr388, while IKKβ helix-loop-helix motifs is essential to phosphorylate IκBα according to the previous reports. Kinase assay further demonstrated that IKKβ simultaneously catalyzes phosphorylation of AMPK and IκBα to mediate homeostasis. Accordingly, activation of AMPK rather than inhibition of IKKβ could substantially rescue LPS-induced mortality in Ikkβ C46A mice by rebuilding the homeostasis. We conclude that IKKβ activates AMPK to restrict inflammation and IKKβ mediates homeostatic function in inflammation via competitively phosphorylating AMPK and IκBα.