ObjectiveTo investigate the effect and mechanism of Qingre Sanzhuo decoction in treating gouty arthritis （GA） combined with hyperuricaemia （HUA）. MethodsSixty male SD rats were randomized into normal， model， colchicine （0.5 mg·kg^-1）， and low-， medium-， and high-dose （17， 34， 68 g·kg^-1， respectively） Qingre Sanzhuo decoction groups （n=10）. The rats in other groups except the normal group were treated with the modified method for the modeling of GA combined with HUA. The drug intervention groups were administrated with corresponding drugs by gavage in the afternoon every day and the normal group and the model group were administrated with an equal volume of sterile normal saline by gavage. The level of uric acid （SUA） in the serum was measured 2 h after the last administration. The degree of ankle joint swelling was calculated 0.5， 12， 24， 48 h after modeling， and joint inflammation was scored. The pathological changes of ankle joints were observed by hematoxylin-eosin staining， and the serum levels of tumor necrosis factor-α （TNF-α）， interleukin-1β （IL-1β）， C reactive protein （CRP）， and interleukin-18 （IL-18） were measured by enzyme-linked immunosorbent assay. Real-time PCR was performed to determine the mRNA levels of NOD-like receptor protein 3 （NLRP3）， apoptosis-associated speck-like protein containing CARD （ASC）， cysteinyl aspartate-specific protease-1 （Caspase-1）， gasdermin D （GSDMD）， and nuclear factor-kappa B （NF-κB） in the synovial tissue of ankle joints. Western blot was employed to determine the protein levels of NLRP3， ASC， and Caspase-1 in ankle joints. The immunohistochemical method was used to detect the expression of GSDMD and NF-κB in the synovial tissue of ankle joints. ResultsCompared with the normal group， the model group showed increased SUA in the serum （P<0.05）， ankle joint swelling and joint inflammation （P<0.05）， increased number of blood vessels in the synovium， inflammatory cell foci in the synovial bursa， elevated serum levels of TNF-α， IL-1β， CRP， and IL-18 （P<0.05）， and up-regulated mRNA and protein levels of NLRP3， ASC， Caspase-1， GSDMD， and NF-κB in the synovial tissue of ankle joints （P<0.05）. Compared with the model group， the medium- and high-dose Qingre Sanzhuo decoction groups showed reduced SUA in the serum （P<0.05）， alleviated ankle joint swelling and joint inflammation （P<0.05）， lowered serum levels of TNF-α， IL-1β， CRP， and IL-18 （P<0.05）， and down-regulated mRNA and protein levels of NLRP3， ASC， Caspase-1， GSDMD， and NF-κB in the synovial tissue of ankle joints （P<0.05）. However， in terms of ameliorating the pathological changes of ankle joints， only the high-dose Qingre Sanzhuo decoction group showed normal morphology of the synovial membrane of ankle joints and no obvious lesion in the articular cartilage. ConclusionQingre Sanzhuo decoction may play a role in preventing and controlling GA combined with HUA by down-regulating the activity of NLRP3/ASC/Caspase-1 pathway and inhibiting the expression of inflammatory cytokines， such as TNF-α， IL-1β， CRP， and IL-18.

Objective: To compare the effectiveness before and after the adjustment of schistosomiasis control strategies in Nanjing City, so as to provide the evidence for improving schistosomiasis control interventions. Methods: The prevalence of Schistosomasis japonicum infections in humans, livestock, Oncomelania hupensis and sentinel mice was collected in Nanjing City from 1993 to 2018, and the prevalence of S. japonicum infections in humans, livestock, sentinel mice and O. hupensis, and the areas of snail habitats, areas of infected snail habitats and snail control areas were compared before (1993-2004) and after (2005-2018) the adjustment of schistosomiasis control strategies to evaluate the effectiveness. Results: The prevalence of S. japonicum infections in humans, livestock, O. hupensis and sentinel mice was 0.77% and 0.02% (χ2=6 430.634, P<0.001), 0.46% and 0.01% (χ2=344.401, P<0.001), 0.19% and 0.11% (χ2=239.685, P<0.001), and 34.35% and 1.56% (χ2=1 856.286, P<0.001) in Nanjing City before and after the adjustment of schistosomiasis control strategies, respectively. The median areas (interquartile range) of snail habitats, infected snail habitats and snail control were 4 175.37 (1 301.65) and 2 366.44 (885.27) hm2 (Z=-3.755, P<0.001), 870.49 (1 001.75) and 0 (158.89) hm2 (Z=-3.654, P<0.001) and 1 383.23 (793.57) and 5 031.94 (629.11) hm2 (Z=-4.320, P<0.001) in Nanjing City before and after the adjustment of schistosomiasis control strategies, respectively. Conclusions After the adjustment of schistosomiasis control strategies, remarkable effects on schistosomiasis control has achieved in Nanjing City, where the transmission of schistosomiasis was interrupted. Nevertheless, the strategy requires to be continued and improved to move towards elimination of schistosomiasis in Nanjing City.

From the point of view of medical device registration technical evaluation, production process of endoscope, three-dimensional imaging(3D), high resolution imaging are discussed. We focus on the process of design and development, especially verification and validation. The general principle is that all risks and unexpected impacts should be minimized and acceptable to ensure that benefits are greater than risks in normal use.
Endoscopes ; Equipment Design ; Imaging, Three-Dimensional

At present, the most commonly used sterilization method for medical devices is ethylene oxide sterilization. The residue after sterilization is closely related to the health of the people who contacted with the medical devices. The study team analyzed the possible residues of medical devices after sterilization with ethyleneoxide. It is suggested that ethylene oxide, 2-chloroethanol and ethylene glycol should be evaluated comprehensively through the analysis of factors such as production links of medical devices, production process of ethylene oxide, sterilization process, sterilization environment and detection method.
Equipment and Supplies ; Ethylene Oxide ; Humans ; Sterilization

In this paper,standards for active implantable cardiac medical devices are discussed.Potential EMC risks and its correspondent tests settings as well as the design principle of the tests have been analyzed.The problems arises from the difference between domestic and international standards on the limitation of exposure of the general public to electromagnetic fields and the lack of assessment of EMC risk which generated by the the 5th generation mobile communication for the impact on the active implantable devices devices.

Objective To investigate the clinicopathological characteristics and prognostic factors of hepatoid adenocarcinoma of the stomach (HAS).Methods From Jan 2006 to Jan 2016,the clinical pathological data of 15 HAS cases in our hospital were analyzed retrospectively.60 TNM stage matched cases of non-HAS gastric cancer served as the control group.The clinical pathology factors and prognosis were compared between the two groups.Results Serum AFP positive HAS patients accounted for 87％.The serum level of AFP in HAS were significantly higher than that in controls (P ＜0.001).HAS was more prone to lymphatic invasion (73％ vs.33％,x2 =7.918,P =0.005) and vascular invasion (40％ vs.10％,x2 =8.036,P =0.005) than control gastric cancer.The immunohistochemistry positive rates of AFP,Glypican3,Hepatocyte and CEA in HAS were 87％,87％,33％,53％ respectively.Liver metastasis (53％ vs.12％,P =0.001) and other distant metastases (53％ vs.15％,P =0.004) were higher in the HAS.HAS median survival time was significantly lower (28.0 months vs.50.7 months,x2 =4.350,P =0.037).Postoperative HAS 1,3 and 5 years survival rates were 80％,33％ and 20％,respectively,significantly worse than 97％,78％ and 33％ in control group (x2 =5.525,17.198,5.472,P =0.019,0.000,0.019 respectively).The independent risk factor influencing the prognosis of HAS included TNM stage,vascular invasion,distant metastasis.Conclusions HAS is often complicated with higher serum AFP and prone to vascular invasion,lymph node metastasis and distant metastasis,hence a poorer prognosis.

There is a high probability of scaphoid nonunion after scaphoid fracture, which can lead to wrist arthritis and further to progressive aggravation of joint function, seriously affecting daily life and work. Currently, there are a variety of treatment methods for scaphoid bone nonunion at home and abroad, and surgical treatment is the major option, which includes open surgery and arthroscopy assisted minimally invasive surgery. Different operative methods have corresponding indications and contraindications with different therapeutic effects. Arthroscopic assisted technique is novel, minimally invasive, and reliable. This article reviews the treatment methods of scaphoid nonunion, including screw internal fixation, non vascularized bone graft, vascularized bone graft, anastomotic vascularized bone graft, bone block resection, arthrodesis, and arthroscopic minimally invasive surgery, so as to provide references for clinical treatment of scaphoid nonunion.

Objective To systematically evaluate the efficacy of high-flow nasal cannulae oxygen (HFNC) in patients with respiratory failure.Methods Computerized PubMed, Embase, Web of Science, the Cochrane Library, CNKI, CBM, VIP, Wanfang Database up to March 31st, 2017, all published available randomized controlled trials (RCTs) or cohort studies about HFNC therapy for patients with respiratory failure were searched. The control group was treated with face mask oxygen therapy (FM) or non-invasive positive pressure ventilation (NIPPV), while the experimental group was treated with HFNC. The main outcomemeasurements included endotracheal intubation rate, patient comfort, and the secondary outcome was in-hospital mortality. The quality of the literature was completed by two professionally trained evidence-based medical students, and meta-analysis was performed on quality-compliant literature. Funnel plot was used to analyze the publication bias.Results A total of 17 articles were enrolled including 15 RCTs and 2 cohort studies. There were 3909 patients enrolled, 1907 patients in HFNC group, and 2002 in control group (1068 patients with FM, and 934 with NIPPV). Meta-analysis showed that HFNC had a significant advantage over FM in reducing the tracheal intubation rate of patients with respiratory failure [odds ratio (OR) = 0.51, 95% confidence interval (95%CI) = 0.29-0.89,P = 0.02], but there was no significant difference as compared with that of NIPPV (OR = 0.80, 95%CI = 0.54-1.17,P = 0.25). It was shown by pooled analysis of two subgroups that compared with FM/NIPPV, HFNC had a significant advantage in reducing tracheal intubation rate in patients with respiratory failure (pooledOR = 0.66, 95%CI = 0.47-0.94, P = 0.02). Compared with FM, patients with respiratory failure were more likely to receive HFNC for comfort [standardized mean difference (SMD) = -0.41, 95%CI = -0.56 to -0.26,P < 0.00001]. There was no significant difference in hospital mortality between HFNC and FM (OR = 0.82, 95%CI = 0.55-1.24,P = 0.35) or NIPPV (OR = 0.66, 95%CI = 0.37-1.17, P = 0.16). The results of pooled analysis of two subgroups were still unchanged (pooledOR = 0.75, 95%CI = 0.54-1.05, P = 0.09). It was shown by the funnel analysis that there was a bias in the study of tracheal intubation rate in the literature, while the bias of patient comfort and hospital mortality was low.Conclusions Compared with FM, HFNC could reduce the rate of tracheal intubation in patients with respiratory failure, but no difference was found as compared with NIPPV. Compared with FM, HFNC made patients more comfortable, and it was easier to be accepted and tolerated. However, there was no difference in hospital mortality among FM, NIPPV, and HFNC.

Objective To investigate the relationship between the serum homocysteine(Hcy) level and heart rate variability in elderly patients with metabolic syndrome.Methods Retrospective analysis of 162 elderly patients with metabolic syndrome aged 60 and above was conducted in our hospital from January 2013 to August 2016.And the level of serum homocysteine and other biochemical indicators were measured.The 162 cases were divided into three groups of 42 cases in Hcy normal group(Hcy,5-15 μmol/L),70 cases in Hcy mildly high group(Hcy,16-30 μmol/L),50 cases in Hcy moderately high group (Hcy,31 ～ 100 μmol/L).Simultaneously 24-hour rhythm in ambulatory heart rate variability spectrum was used to detect HRV.And the relationship between heart rate variability(HRV) and Hcy levels were analyzed.Results Normal RR interval standand deviation (SDNN),5 min mean heart rate standard deviation (SDANN),Edinburg index (PNN50),root mean square value of adjacent RR interval difference(RMMSD)were all lower in Hcy mildly high group and Hcy moderately high group than in the Hcy normal group (P＜0.05).Low-frequency(LF) and highfrequency(HF)were lower in Hcy mildly high group and Hcy moderately high group than in the Hcy normal group(P ＜ 0.05).Sympathetic-vagal balance indicators (LF/HF) were higher in Hcy mildly high group and Hcy moderately high group than in the Hcy normal group (P＜ 0.05).The HRV indexes were lower in Hcy high groups than in the Hcy normal group.Hcy was negatively correlated with SDANN,RMSSD,LF,HF,and LF/HF at night(r=-0.578、-0.651、-0.531、-0.662、-0.729,all P ＜ 0.01).Conclusions The elevated homocysteine level and metabolic syndromecombined with decreased HRV in the elderly patients suggest that cardiac autonomic nervous system might be injuried.Enhancing the detection of HRV and homocysteine level in elderly patients with MS is clinically useful for early detection of autonomic neuropathy.

The regulation of mobile medical devices is one of the hot topics in the industry now. The definition, regulation scope and requirements, potential risks of mobile medical devices were analyzed and discussed based on mobile computing techniques and the FDA guidance of mobile medical applications. The regulation work of mobile medical devices in China needs to adopt the risk-based method.
China ; Equipment and Supplies ; standards ; Mobile Applications ; standards