Research about constructing multi-dimensional carbon nanomaterials is of great significance in electrocatalytic and sensing fields in order to integrate structural merits of each individual unit. Also, nano-materials ...
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Research about constructing multi-dimensional carbon nanomaterials is of great significance in electrocatalytic and sensing fields in order to integrate structural merits of each individual unit. Also, nano-materials with enzyme-like activities are prospective candidates for artificial enzyme design and electrochemical application. Herein, we fabricate Co, N co-doped hierarchical hybrid (Co@NCNTs/NC) nanozyme, which integrates of both N-doped carbon nanotubes (NCNTs) and N-doped carbon sheets (NC). The three-dimensional (3D) porous carbon composite is prepared by thermal treatment of metal-organic framework (MOF) which was synthesized by growing of ZIF-67 on ZIF-L at room temperature. The obtained nanomaterial not only possesses an improved oxidase-like activity that can catalyze 3,3',5,5'-tetramethylbenzidine (TMB) in the absence of hydrogen peroxide (H2O2), but also constructs a signal amplification platform towards dopamine (DA) due to the synergistic catalysis of Co species and N-doped porous carbon architecture. The electrocatalytic performance for DA detection shows a broad linear range from 30 nM to 710 mu M and a detection limit of 9 nM. The Co@NCNTs/NC/GCE is employed to practically detect DA in human serum and artificial cerebrospinal fluid (aCSF) samples with satisfactory results. The present work exhibits a great promising in colorimetric and electrochemical sensing fields and presents a new sight for the fabrication of MOF-derived nanozyme. (C) 2021 Elsevier Ltd. All rights reserved.
The study aimed to quantitatively assess functional risks in the medication administration process of elderly inpatients and develop management measures from a holistic system safety perspective. The functional resona...
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The study aimed to quantitatively assess functional risks in the medication administration process of elderly inpatients and develop management measures from a holistic system safety perspective. The functional resonance analysis method and decision-making trial and evaluation laboratory (DEMATEL) method were introduced to graphically model the medication administration process in elderly inpatients and identify safety issues affecting the complex interactions of functions. Semi-structured interviews based on the Fit between Individual, task, technology, and environment framework were used to explore medication safety management measures. A total of 18 functional modules were included in the medication process model for elderly inpatients. The DEMATEL results showed that medical order entry accounted for the highest proportion of the medication process, followed by label printing. Patient identification and drug verification, as downstream links, showed high impacts and influence. Among the safety management measures, task-technology fit and technology-individual fit were the most common. In the future, more research on medication management in elderly patients with different levels of care, settings and contexts, such as home and community, is needed. Attention should be paid to the integration and effect of implementing management measures to comprehensively safeguard patient medication safety.
目的研究发状分裂相关增强子1(hairy and enhancer of split 1,Hes1)蛋白在经典型骨肉瘤中的表达及其与临床特征和预后的关系。方法收集本院2007年4月至2016年10月初诊初治并明确诊断的经典型骨肉瘤患者标本56例,运用免疫组织化学检测H...
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目的研究发状分裂相关增强子1(hairy and enhancer of split 1,Hes1)蛋白在经典型骨肉瘤中的表达及其与临床特征和预后的关系。方法收集本院2007年4月至2016年10月初诊初治并明确诊断的经典型骨肉瘤患者标本56例,运用免疫组织化学检测Hes1蛋白的表达,分析其表达与临床病理特征及术后转归的关系。对患者总生存和无进展生存情况进行随访,随访至术后5年,采用Kaplan-Meier法和log-rank检验进行生存分析。结果56例患者中,Hes1高表达22例(39.3%),低表达34例(60.7%)。与Hes1低表达患者比较,Hes1高表达患者的肿瘤直径更大(P=0.018),术后复发率及转移率均更高(均P<0.05)。Hes1低表达和高表达患者5年内平均总生存期为52.7个月和38.4个月(P=0.001),5年内平均无进展生存期为48.3个月和22.6个月(P<0.01)。Cox多因素回归分析提示,Hes1表达水平是患者总生存和无进展生存的预后独立风险因素(均P<0.01)。结论经典型骨肉瘤中Hes1蛋白的高表达与术后复发、转移及生存时间缩短相关。
Accumulating evidence shows that RAGE has an important function in the pathogenesis of sepsis. However, the mechanisms by which RAGE transduces signals to downstream kinase cascades during septic shock are not clear. ...
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Accumulating evidence shows that RAGE has an important function in the pathogenesis of sepsis. However, the mechanisms by which RAGE transduces signals to downstream kinase cascades during septic shock are not clear. Here, we identify SLP76 as a binding partner for the cytosolic tail of RAGE both in vitro and in vivo and demonstrate that SLP76 binds RAGE through its sterile alpha motif (SAM) to mediate downstream signaling. Genetic deficiency of RAGE or SLP76 reduces AGE-induced phosphorylation of p38 MAPK, ERK1/2 and IKK alpha/beta, as well as cytokine release. Delivery of the SAM domain into macrophages via the TAT cell-penetrating peptide blocks proinflammatory cytokine production. Furthermore, administration of TAT-SAM attenuates inflammatory cytokine release and tissue damage in mice subjected to cecal ligation and puncture (CLP) and protects these mice from the lethality of sepsis. These findings reveal an important function for SLP76 in RAGE-mediated pro-inflammatory signaling and shed light on the development of SLP76-targeted therapeutics for sepsis.
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