Bifunctional ZnCo_(2)S_(4)/CoZn_(13) hybrid electrocatalysts for high efficient overall water splitting

To develop highly active and low-cost electrocatalyst is very important to improve the efficiency of water splitting.However,the current catalysts still present serious challenges due to the poor intrinsic activity and high overpotential.Herein,we report several amino induced Co-based composite catalysts.As a structure-mediating agent,ethylenediamine (EDA) can not only regulate the crystal structure and but also provide many surface amino groups.The obtained ZnCo_(2)S_(4)/CoZn_(13) catalysts show an excellent oxygen evolution reaction (OER) performance (274 mV@50 mA cm^(-2)) and the overpotential of 160 mV at-10 mA cm^(-2) for hydrogen evolution reaction (HER).For electrolysis of water,the electrocatalysts deliver a cell voltage of 1.61 V at 50 m A cm^(-2).This study provides a facile synthetic strategy to construct advanced electrocatalysts for future applications.

Use of Autologous Costal Cartilage Combined with Expanded Polytetrafluoroethylene in Asian Rhinoplasty

Background The corresponding author's experience and recent methods employed in autologous costal cartilage grafts combined with expanded polytetrafluoroethylene(ePTFE)in Asian rhinoplasty were presented in this study.Objectives The purpose of this study was to assess the outcomes of rhinoplasty performed on patients using autogenous costal cartilage grafts combined with an ePTFE implant.Methods Seventy-five rhinoplasty cases with autologous costal cartilage grafts and an ePTFE implant were retrospectively reviewed.Graft types,complications associated with the graft itself or graft harvesting,surgical outcomes,and patient satisfaction were assessed.Results The mean follow-up time post-operation was 13.5 months.A total of 42/75 patients underwent revision surgeries.Graft-related complications were found in 8%of cases,including two warped graft and four infection cases.Three individuals with infections had mild graft resorption.One patient with an infection removed the implant.Graft exposure,mobility,and substantial resorption were not recorded.A total of two cases underwent revision procedures for infection and perforation,respectively.Chest incision lengths for graft harvesting averaged 2.1 cm.No pneumothorax or significant donor-site pain was found.Donor-site scars were negligible,although two cases had hypertrophic chest scars.In general,functional and esthetic outcomes were mostly satisfactory among the assessed patients.Conclusions Rhinoplasty using autologous rib cartilage provides adequate support and sufficient cartilage amounts for correcting nasal contouring.Meanwhile,ePTFE alone for nasal dorsum augmentation safely achieves satisfactory outcomes.Rib cartilage rhinoplasty performed by an experienced surgeon yields excellent,long-lasting results with minimal risk;however,the potential for infection should be considered following revision surgery.

Selective photocatalytic oxidation of methane to C1 oxygenates by regulating sizes and facets over Au/ZnO

Photocatalytic oxidation of methane to value-added chemicals is a promising process under mild conditions,nevertheless confronting great challenges in efficiently activating C-H bonds and inhibiting over-oxidation.Herein,we propose a comprehensive strategy for the selective generation of reactive oxygen species(ROS)by regulating the sizes and facets of Au nanoparticles loaded on ZnO.For photocatalytic methane oxidation at ambient temperature,a high oxygenates yield of 36.4 mmol·g^(-1)·h^(-1) with a nearly 100%selectivity has been achieved over the optimized 1.0%Au/ZnO-9.6(1%Au with(111)facet and 9.6 nm size on ZnO)photocatalyst,exceeding most reported literatures.Mechanism investigations reveal that 1.0%Au/ZnO-9.6 with the medium size and Au(111)facet guarantees the favourable formation of superoxide radicals(·OOH)through mild oxygen reduction,ultimately leading to excellent photocatalytic methane oxidation performance.This work provides some guidance for the delicate design of photocatalysts for efficient photocatalytic methane oxidation and oxygen utilization.

circGLS2 inhibits hepatocellular carcinoma recurrence via regulating hsa-miR-222-3p–PTEN–AKT signaling

Dear Editor,Growing evidences indicate that circRNAs affect hepatocellular carcinoma(HCC)progression.1,2,3,4 Understanding the roles of circRNAs in HCC recurrence helps develop innovated therapies.To identify novel HCC recurrence-related circRNA,thirteen HCC patients were subjected to a multi-omics analysis of mRNA,circRNA.

基于倾向性评分匹配的机器人与腹腔镜辅助根治性右半结肠切除术近远期疗效的比较

目的比较机器人与腹腔镜辅助根治性右半结肠切除术治疗结肠癌的近期及远期结局。方法回顾性分析2014年10月至2020年10月在青岛大学附属医院胃肠外科接受机器人辅助右半结肠切除术(n=57)或腹腔镜辅助右半结肠切除术(n=231)的288例右半结肠癌患者的临床资料。男性161例,女性127例,年龄(60.3±12.8)岁(范围:17~86岁)。采用倾向性评分匹配法对两组患者进行1∶4匹配,匹配后机器人组56例,腹腔镜组176例。采用t检验、秩和检验、χ^(2)检验、Fisher确切概率法及重复测量方差分析比较匹配后两组患者的手术情况及近期结局,应用Kaplan-Meier法绘制生存曲线,采用Log-rank检验进行比较。结果机器人组与腹腔镜组相比,总手术时间相近[(206.9±60.7)min比(219.9±56.3)min,t=-1.477,P=0.141],术中出血量更少[50(20)ml比50(50)ml,Z=-4.591,P<0.01],清扫淋巴结数目更多[(36.0±10.0)枚比(29.0±10.1)枚,t=4.491,P<0.01],术后住院时间、首次排气时间、排便时间明显缩短(t:-2.888、-2.946、-2.328,P值均<0.05)。机器人组和腹腔镜组围手术期并发症发生率的差异无统计学意义(P>0.05)。机器人组和腹腔镜组3年总体生存率分别为92.9%和87.9%,3年无病生存率分别为83.1%和82.6%(P值均>0.05)。结论机器人辅助右半结肠根治术较传统腹腔镜手术能够改善患者部分近期临床结局指标。两种术式患者远期预后相似。

Trends in cancer mortality in China from 2004 to 2018:A nationwide longitudinal study

Background:The long-term trend in cancer death in a rapidly developing country provides information for cancer prophylaxis.Here,we aimed to identify the trends in cancer mortality in China during the 2004-2018 period.Methods:Using raw data from the national mortality surveillance system of China,we assessed the mortalities of all cancer and site-specific cancers during the 2004-2018 period.The participants were divided into three age groups:≥65 years,40-64 years,and≤39 years.Changing trends in cancer death by gender,residency,and tumor location were estimated using fitting joinpoint models to log-transformed crude mortality rates(CMRs)and age-standardizedmortality rates(ASMRs).Results:Cancer death accounted for 24% of all-cause of death in China during 2014-2018.The CMR of all cancer was 150.0 per 100,000 persons.Cancer was the leading cause of death in the population<65 years.The six major cancer types(lung/bronchus cancer,liver cancer,stomach cancer,esophagus cancer,colorectal cancer,and pancreas cancer)accounted for 75.85% of all cancer deaths.The CMR of all cancer increased while the ASMR decreased during 2014-2018(P<0.001).Lung/bronchus cancer and liver cancer were the leading causes of cancer death in the population<65 years,accounting for 45.31%(CMR)and 44.35%(ASMR)of all cancer death,respectively.The ASMR of liver cancer was higher in the 40-64 years population than in the≥65 years population,in contrast to the other five major cancers.The ASMRs of liver cancer,stomach cancer,and esophagus cancer decreased although they were higher in rural residents than in urban residents;the ASMRs of lung/bronchus cancer,colorectal cancer,and pancreas cancer increased in rural residents although they were higher in urban residents than in rural residents during 2014-2018.Conclusion:Although the ASMR of all cancer decreased in China during 2004-2018,lung/bronchus cancer and liver cancer remained the leading causes of cancer-related premature death.Lung/bronchus cancer,colorectal cancer,and pancreas cancer increased in rural residents.

Follistatin-like protein 1 plays a tumor suppressor role in clear-cell renal cell carcinoma

Background:We previously showed that the expression of follistatin-like protein 1(FSTL1)was significantly down-regulated in metastatic clear-cell renal cell carcinoma(ccRCC).In this study,we aimed to characterize the role of FSTL1 in the development of ccRCC.Methods:The effects of FSTL1 on cell activity and cell cycle were investigated in ccRCC cell lines with altered FSTL1 expression.Gene expression microarray assays were performed to identify the major signaling pathways affected by FSTL1 knockdown.The expression of FSTL1 in ccRCC and its effect on postoperative prognosis were estimated in a cohort with 89 patients.Results:FSTL1 knockdown promoted anchorage-independent growth,migration,invasion,and cell cycle of ccRCC cell lines,whereas FSTL1 overexpression attenuated cell migration.FSTL1 knockdown up-regulated nuclear factor-κB(NF-κB)and hypoxia-inducible factor(HIF)signaling pathways,increased epithelial-to-mesenchymal transition,up-regulated interleukin-6 expression,and promoted tumor necrosis factor-α-induced degradation of NF-κB inhibitor(IκBα)in ccRCC cell lines.FSTL1 immunostaining was selectively positive in epithelial cytoplasm in the loop of Henle,and positive rate of FSTL1 was significantly lower in ccRCC tissues than in adjacent renal tissues(P<0.001).The mul-tivariate Cox regression analysis showed that the intratumoral FSTL1 expression conferred a favorable independent prognosis with a hazard ratio of 0.325(95%confidence interval 0.118-0.894).HIF-2αexpression was negatively cor-related with FSTL1 expression in ccRCC specimens(r=−0.229,P=0.044).Intratumoral expression of HIF-2α,rather than HIF-1α,significantly predicted an unfavorable prognosis in ccRCC(log-rank,P=0.038).Conclusions:FSTL1 plays a tumor suppression role possibly via repressing the NF-κB and HIF-2αsignaling pathways.To increase FSTL1 expression might be a candidate therapeutic strategy for metastatic ccRCC.

Association of human leukocyte antigen-DR-DQ-DP haplotypes with the risk of hepatitis B virus-related hepatocellular carcinoma

Aim:Genetic polymorphisms of human leukocyte antigen(HLA)class II molecules are associated with chronic hepatitis B virus(HBV)infection.We aimed to investigate the impacts of HLA-II haplotypes on viral evolution and the risks of HBV-caused liver diseases.Methods:HLA-DR-DQ-DP haplotypes were estimated in 1210 healthy controls,296 HBV clearance subjects,301 asymptomatic hepatitis B surface antigen carriers,770 chronic hepatitis B patients,443 HBV-related liver cirrhosis(LC)patients,and 1037 HBV-related hepatocellular carcinoma(HCC)patients.HBV mutations were determined by sequencing.The associations of HLA-DR-DQ-DP haplotypes with viral mutations and the risks of liver diseases were assessed by multivariate logistic regression.Results:Compared to HBV-free subjects,the haplotypes CCAACG,CCGACG,TCAATA,and TCGATA were associated with decreased HCC risk,with an odds ratio(OR)[95%confidence interval(CI)]of 0.62(0.40-0.95),0.60(0.39-0.92),0.73(0.54-0.98),and 0.58(0.42-0.78),respectively.CCAACG,CCGACG,and TCAATA were significantly associated with decreased frequencies of the HCC-risk HBV mutations:preS1 deletion,APOBECsignature HBV mutations in the core promoter and preS regions,A51C/T,G104C/T,and G146C/T.TCGATA and TTAACG were associated with increased LC risk,with an OR(95%CI)of 1.54(1.03-2.30)and 2.23(1.50-3.33),respectively.However,TCGATA and TTAACG were not consistently associated with the cirrhosis-risk HBV mutations.Conclusion:CCAACG,CCGACG,and TCAATA are inversely associated with HCC risk,possibly because they are involved in creating an immune microenvironment attenuating the generation of HCC-risk HBV mutations.TCGATA and TTAACG might predispose the polarity of immunity towards Th17 isotype related to LC.

Bifunctional Fe-doped CoP@Ni_(2)P heteroarchitectures for highefficient water electrocatalysis

It is important to develop economical and durable electrocatalysts for sustainable energy conversion technology.However,the current catalysts still suffer from insufficient hydrogen adsorption energy.Herein,we report a kind of novel bi-phosphide catalyst through constructing heterogeneous structures and cation doping.The obtained sample delivers an outstanding hydrogen evolution reaction(HER)performance at all pH range.As oxygen evolution reaction(OER)electrocatalyst,Fe-CoP@Ni_(2)P samples show an overpotential of 237 mV at 50 mA·cm^(−2) in alkaline solution.For electrolysis of water,Fe-CoP@Ni_(2)P catalysts deliver a cell voltage of 1.59 V at 50 mA·cm^(−2) and long durability.Furthermore,density functional theory(DFT)calculation further confirms that the doped heterostructure promotes Gibbs free energy for hydrogen adsorption.And the significant increase in the density of total states(DOS)also enhances the catalytic activity of HER.