Objective To discuss the effect of H2 on osteoclast differentiation of RAW264.7 cells induced by RANKL and RANKL/TNF-α.MethodsRAW264.7 cells were treated with H2 in the presence of RANKL and RANKL/TNF-α.RAW264.7 cells viability was assessed by CCK-8.Test the Oxidative Stress of the induced RAW264.7.The number of TRAP-positive cells were counted under light microscopy.The levels of cathepsin K (CTK) and matrix metalloprotein-9(MMP-9) mRNA were analyzed by real-time PCR.ResultsH2 can not influence the RAW264.7 cell viability but can lower oxidative stress.The significant difference(P<0.05) indicated that H2 could significantly decrease the number of TRAP-positive MNCs.The significant difference among the 4 groups in CTK and MMP-9 genes (P<0.05) indicated that H2 could down-regulate their mRNA expression.ConclusionH2 can reduce the oxidative stress and inhibit differentiation of RAW264.7 cells into osteoclasts.

Objective To analyze the clinical features and risk factors of migraine patients with white matter le-sions (WMLs). Methods One hundred ten clinically diagnosed migraine patients who underwent magnetic resonance im-aging (MRI) scans from October, 2010 to August, 2013 were enrolled in Shandong Provincial Hospital. One hundred ten migraine patients were divided into two groups:WMLs group and non-WMLs group based on the presence or absence of WMLs in MRI scans. The clinical features of the patients and location and number of WMLs were investigated. Noncondi-tional multivariate stepwise logistic regression after univariate analysis was used to analyze the data. Odds ratio (0R) and 95 confidence interval after adjustment for possible confounding variables were calculated. Results①There were 36 patients with WMLs among the 110 migraine patients. The incidence of WMLs in migraine patients was 32.7%. The WMLs in migraine patients were predominantly present in the frontal and parietal lobes (59.1%). ② Compared with non-WMLs group, there were significant increases in disease duration (5.3±3.7 vs. 7.6±4.9, P﹤0.01), frequency of head-ache attack (3.5 ± 2.3 vs. 4.6 ± 2.2, P﹤0.05), aura (18.9%vs. 36.1%, P﹤0.05) and family history of migraine (12.2%vs. 44.4%, P﹤0.01) in WMLs group.③The independent risk factors of WMLs in migraine patients were family history of mi-graine (OR=5.995), aura (OR=3.067) and long disease duration (OR=1.165). Conclusions Family history of migraine, au-ra and disease duration are the predictive risk factors of WMLs in migraineurs.

Objective To investigate the microstructural abnormalities of cerebral white matter in patients with medication-overuse headache with diffusion tensor imaging.Methods Diffusion tensor magnetic resonance imaging (DT-MRI) was carried out in 80 migraine patients with medication-overuse headache (case group) and 80 age-and sex-matched healthy controls (control group).Fractional anisotropy (FA) and apparent diffusion coefficient (ADC) were measured and the correlation between clinical characteristics and the changes was examined.Results ① The FA values at the bilateral orbitofrontal cortex,cingulate cortex,splenium of the corpus callosum and the right anterior limb of the capsula interna were significantly lower than those in the controls(P＜0.05).② The ADC values at the right orbitofrontal cortex,left inferior frontal gyrus and anterior cingulate cortex were significantly higher than those in the controls (P＜0.05).③ There were negative correlations between FA values at the bilateral orbitofrontal cortex and right hind legs of the capsula interna and headache course as well as frequency.There was negative correlation between FA values at the left hind legs of capsula interna and headache frequency.④ There were positive correlations between ADC values at the left orbitofrontal cortex and headache course as well as frequency.There were positive correlations between ADC values at the right orbitofrontal cortex and prior cingulate cortex and headache frequency.There was positive correlation between ADC values at the posterior cingulate cortex and headache course.Conclutions There might be an integrity change of neurofibrotic microstructures in the bilateral orbitofrontal cortex and cingulate cortex in patients with medication-overuse headache,FA values are negatively associated with headache course and frequency whereas ADC values are positively associated with headache course and frequency.

Objective:To investigate the applicability of time series model in predicting incidence of nosocomial infection in a cancer center in Shanghai, and to provide the references for early warning and prevention.Methods:The nosocomial infection data of inpatients of a tertiary oncology hospital in Shanghai from 2013 to 2018 were collected. The autoregressive integrated moving average (ARIMA) model and the exponential smoothing model were established by SPSS 22.0 expert modeler. The fitting predictions were compared between these two time series models to select the optimal one. The nosocomial infection data from January 2019 to June 2019 were used to test the predictive effect of the model.Results:A total of 379 477 cancer inpatients were studied, 3 170 of which acquired nosocomial infection and the incidence was 0.84% from 2013 to 2018. Additive Holt-Winters method exponential smoothing model was the better model with R2of 0.82. Using this model, the predicted value fitted well with observed value from January 2019 to June 2019, and the mean relative percentage error was 15.22%. Conclusion:Additive Holt-Winters method exponential smoothing model could be used to fit and predict the tendency of nosocomial infection among cancer patients, which can provide reference for surveillance of nosocomial infection in oncology hospitals.

Objective To prepare specific mouse monoclonal antibodies against Homo sapiens dynein,axonemal, heavy chain 2 (DNAH2). Methods Firstly, recombinant plasmid encoding His tagged immunogen, targeting N-terminal sequence of DNAH2 protein (1-300 aa), in E. coli was constructed. IPTG was used to induce the expression of His-immunogen, which was then purified and immunized in BALB/c mice. Hybridoma cells were obtained through the fusion between myeloma cells and splenocytes isolated from BALB/c mice. Finally, ELISA and Western blot assays were performed to screen the positive hybridoma. Results IPTG was used efficiently to induce the expression of DNAH2 immunogen in E. coli. DNAH2 protein bands were detected in screened positive hybridoma. Conclusion Mouse monoclonal anti-DNAH2 antibody is prepared successfully.

Objective To investigate the effects of CD147/MMP-9 pathway on early left ventricular remodeling Methods 30 healthy eight-week male SHR were divided into 3 groups (n = 10 for each group). SHR group received tail vein injections of normal saline weekly; CD147 group received CD147 of 600 ng·kg-1 weekly; and CD147+DOX group received CD147 of 600 ng/kg weekly and intragastric administration of DOX ( doxycycline ) of 30 mg/kg daily . 10 healthy eight-week male Wistar-Kyoto rats (WKY group) were treated as SHR group. Echocardiography, myocardial sections microscopy examination (HE and VG stain), and Western blot (for assessing levels of MMP-9, TIMP-1, CD147, and collagen I and Ⅲin myocardial tissues) were performed on day 56. Left ventricular weight index (LVWI)was measured and calculated. Collagen volume fractions (CVF) were obtained by image analysis. Results As compared with WKY group , levels of CD147 , MMP-9 , and MMP-9/TIMP-1 were lower but TIMP-1 and collagenⅠand Ⅲ were significantly higher in SHR group. The abundance of CD147 and MMP-9 protein and the ratio of MMP-9/TIMP-1 were obviously increased in CD147 group than in SHR group (P < 0.05). Levels of CD147, MMP-9, and MMP-9/TIMP-1 did no differ between CD147+DOX group and CD147 group. LVWI and contents of collagenⅠand Ⅲ were obviously declined in CD147 group as compare with SHR group. Cardiomyocyte hypertrophy , partial myocardial fibre rupture , myocyte dissolution and fuzzy myocardial fibre boundaries , more abundant of collagen fibers, and higher CVF were found in SHR group. Cardiac fibrosis was significantly improved after CD147 intervention, but the action was suppressed as DOX was administrated simultaneously. Conclusions Early ventricular remodeling may be involved in the inhibition of CD147/MMP-9 pathway in SHR. Input of CD147 to upregulate the pathway can improve the remodeling.

Objective:To establish a nomograph prediction model of early critical changes in children with febrile convulsion, and to provide guidance for the prevention and nursing of children with febrile convulsion.Methods:Convenient sampling method was adopted to select 384 children with febrile convulsion in Anhui Children ′s Hospital from January 2018 to April 2021 as the research objects. Based on pews, the children with febrile convulsion were divided into 334 cases of non risk group and 50 cases of risk group. Binary Logistic regression analysis were used to determine the independent risk factors affecting the early critical changes of children with febrile convulsion. A nomogram was drawn based on the independent risk factors. The discrimination and consistency of the model were verified by model ROC curve and Hosmer Lemeshow goodness of fit.The external validation of model prediction efficiency were verified by validation data. Results:Binary Logistic regression analysis showed that age, respiratory rhythm disorder, unconsciousness, breath rate, heart rate, neutrophil-to-lymphocyte ratio (NLR), red blood cell distribution width (RDW), duration of first convulsion and mean body temperature after first convulsion were influence factors for early critical changes in children with febrile convulsion ( P<0.05). The C-index of the model was 0.974 (95% CI 0.954-0.993), and the C-index of the external validation of the model was 0.922 (95% CI 0.880-0.966). The results of H-L fitting test showed that the difference was not statistically significant( χ2=0.29, P>0.05). Conclusions:The early critical changes of children with febrile convulsion may be affected by respiratory rhythm disorder, confusion of consciousness, breath rate, heart rate, NLR, RDW, duration of the first convulsion, mean temperature after the first convulsion and other factors. Pediatric emergency department should collect corresponding intervention measures for children with febrile convulsion according to the establishment of prediction model to prevent their early deterioration.

Proteomic characterization of plasma is critical for the development of novel pharmacodynamic bio-markers.However,the vast dynamic range renders the profiling of proteomes extremely challenging.Here,we synthesized zeolite NaY and developed a simple and rapid method to achieve comprehensive and deep profiling of the plasma proteome using the plasma protein corona formed on zeolite NaY.Specifically,zeolite NaY and plasma were co-incubated to form plasma protein corona on zeolite NaY(NaY-PPC),followed by conventional protein identification using liquid chromatography-tandem mass spectrometry.NaY was able to significantly enhance the detection of low-abundance plasma proteins,minimizing the"masking"effect caused by high-abundance proteins.The relative abundance of middle-and low-abundance proteins increased substantially from 2.54％to 54.41％,and the top 20 high-abundance proteins decreased from 83.63％to 25.77％.Notably,our method can quantify approxi-mately 4000 plasma proteins with sensitivity up to pg/mL,compared to only about 600 proteins iden-tified from untreated plasma samples.A pilot study based on plasma samples from 30 lung adenocarcinoma patients and 15 healthy subjects demonstrated that our method could successfully distinguish between healthy and disease states.In summary,this work provides an advantageous tool for the exploration of plasma proteomics and its translational applications.

Porcelain tooth technology is widely used in the treatment of oral diseases, but there are few reports on the possible occupational hazard factors in the process of porcelain tooth production. Porcelain teeth production will produced a large amount of silica dust and metal dust during the grinding process. The technical workers who have been engaged in this work for a long time are very prone to pneumoconiosis due to their poor personal protection awareness. This paper analyzed the clinical data of a pneumoconiosis patient engaged in porcelain tooth making, and analyzed the possible occupational hazard factors in the process of porcelain teeth production, so as to improve the understanding of relevant enterprises, technical workers and medical personnel on the disease and reduce the risk of porcelain teeth production workers suffering from pneumoconiosis.

Porcelain tooth technology is widely used in the treatment of oral diseases, but there are few reports on the possible occupational hazard factors in the process of porcelain tooth production. Porcelain teeth production will produced a large amount of silica dust and metal dust during the grinding process. The technical workers who have been engaged in this work for a long time are very prone to pneumoconiosis due to their poor personal protection awareness. This paper analyzed the clinical data of a pneumoconiosis patient engaged in porcelain tooth making, and analyzed the possible occupational hazard factors in the process of porcelain teeth production, so as to improve the understanding of relevant enterprises, technical workers and medical personnel on the disease and reduce the risk of porcelain teeth production workers suffering from pneumoconiosis.