|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Human umbilical cord-derived mesenchymal stem cell therapy in patients with COVID-19:a phase 1 clinical trial显示文摘No effective drug treatments are available for coronavirus disease 2019(COVID-19).Host-directed therapies targeting the underlying aberrant immune responses leading to pulmonary tissue damage,death,or long-term functional disability in survivors require clinical evaluation.We performed a parallel assigned controlled,non-randomized,phase 1 clinical trial to evaluate the safety of human umbilical cord-derived mesenchymal stem cells(UC-MSCs)infusions in the treatment of patients with moderate and severe COVID-19 pulmonary disease.The study enrolled 18 hospitalized patients with COVID-19(n=9 for each group).The treatment group received three cycles of intravenous infusion of UC-MSCs(3×107 cells per infusion)on days 0,3,and 6.Both groups received standard COVID-treatment regimens.Adverse events,duration of clinical symptoms,laboratory parameters,length of hospitalization,serial chest computed tomography(CT)images,the PaO2/FiO2 ratio,dynamics of cytokines,and IgG and IgM anti-SARS-CoV-2 antibodies were analyzed.No serious UC-MSCs infusion-associated adverse events were observed.Two patients receiving UC-MSCs developed transient facial flushing and fever,and one patient developed transient hypoxia at 12 h post UC-MSCs transfusion.Mechanical ventilation was required in one patient in the treatment group compared with four in the control group.All patients recovered and were discharged.Our data show that intravenous UC-MSCs infusion in patients with moderate and severe COVID-19 is safe and well tolerated.Phase 2/3 randomized,controlled,double-blinded trials with long-term follow-up are needed to evaluate the therapeutic use of UC-MSCs to reduce deaths and improve long-term treatment outcomes in patients with serious COVID-19. | Fanping Meng Ruonan Xu Siyu Wang Zhe Xu Chao Zhang Yuanyuan Li Tao Yang Lei Shi Junliang Fu Tianjun Jiang Lei Huang Peng Zhao Xin Yuan Xing Fan Ji-Yuan Zhang Jinwen Song Dawei Zhang Yanmei Jiao Limin Liu Chunbao Zhou Markus Maeurer Alimuddin Zumla Ming Shi Fu-Sheng Wang | 2020 | Signal Transduction and Targeted Therapy2020，5，1： | 16 |
| 2 | Genotype variations in accumulation of cadmium and lead in celery (Apium graveolens L.) and screening for low Cd and Pb accumulative cultivars显示文摘To help reduce risks of heavy metal pollution, two pot experiments were conducted to investigate the variations, transfer potential, and stability of Cadmium (Cd) and Lead (Pb) accumulations in celery (Apium graveolens L.) and to screen for low Cd and Pb accumulative cultivars. The maximum differences in shoot Cd concentration were 4.7-fold under low-Cd exposure and 3.3-fold under high-Cd exposure. These genotype variations in Cd accumulation are sufficiently large to help reduce Cd contamination risk in soil by using the Low-Cd-Accumulative genotypes. Cd accumulation of the Low-Cd-Accumulative genotypes is significantly positive correlated with Pb accumulation. Evidence obtained proves that Cd and Pb accumulations in celery are stable and genotype-dependent at the cultivar level. The presence of high-Pb contamination in soil promoted Cd accumulation in shoots of celery. Celery is considered a species with high risks in Cd pollution and low risks in Pb pollution. Among the tested cultivars, cv. Shuanggang- kangbing (SGKB) had the lowest shoot Cd and Pb accumulating abilities, and thus is the most important material for breeding of pollution-safe cultivars (PSCs) to minimize Cd and Pb accumulations in celery. | Kun ZHANG Jianbing WANG Zhongyi YANG Guorong XIN Jiangang YUAN Junliang XIN Charlie HUANG | 2013 | Frontiers of Environmental Science & Engineering2013，7，1： | 9 |
| 3 | Emodin prevents hypoxic-ischemic neuronal injury Involvement of the activin A pathway显示文摘Emodin, an extract of dried rhizomes and the root of the Rhizoma Polygoni Cuspidati, can protect neurons from hypoxic-ischemic brain damage. This study aimed to verify the underlying mechanism. After PC12 cells had differentiated into neuron-like cells under the induction of mouse nerve growth factor, cells were subjected to oxygen-glucose deprivation and treated with emodin. Results showed that the viability of neuron-like cells cultured under an ischemia-hypoxia environment decreased, while the expression of activin A and caspase-3 in cells increased. Emodin raised the survival rate of oxygen-glucose deprived neuron-like cells, increased activin A expression, and decreased caspase-3 expression. Experimental findings indicate that emodin can inhibit neuronal apoptosis and alleviate the injury of nerve cells after oxygen-glucose deprivation through the activin A pathway. | Hongliang Guo Xiaoran Shen Ye Xu Junliang Yuan Dongming Zhao Wenli Hu | 2013 | Neural Regeneration Research2013，8，15： | 5 |
| 4 | CsPb(I_(x)Br_(1-x))_(3) solar cells显示文摘Owing to its nice performance, low cost, and simple solution-processing, organic-inorganic hybrid perovskite solar cell(PSC) becomes a promising candidate for next-generation high-efficiency solar cells.The power conversion efficiency(PCE) has boosted from 3.8% to 25.2% over the past ten years. Despite the rapid progress in PCE, the device stability is a key issue that impedes the commercialization of PSCs. Recently, all-inorganic cesium lead halide perovskites have attracted much attention due to their better stability compared with their organic-inorganic counterpart. In this progress report, we summarize the properties of CsPb(IxBr1-x)3 and their applications in solar cells. The current challenges and corresponding solutions are discussed. Finally, we share our perspectives on CsPb(IxBr1-x)3 solar cells and outline possible directions to further improve the device performance. | Xue Jia Chuantian Zuo Shuxia Tao Kuan Sun Yixin Zhao Shangfeng Yang Ming Cheng Mingkui Wang Yongbo Yuan Junliang Yang Feng Gao Guichuan Xing Zhanhua Wei Lijun Zhang Hin-Lap Yip Mingzhen Liu Qing Shen Longwei Yin Liyuan Han Shengzhong Liu Lianzhou Wang Jingshan Luo Hairen Tan Zhiwen Jin Liming Ding | 2019 | Science Bulletin2019，64，20： | 2 |
| 5 | Responses of different water spinach cultivars and their hybrid to Cd, Pb and Cd–Pb exposures显示文摘 | Junliang Xin Baifei Huang Zhongyi Yang Jiangang Yuan Hongwen Dai Qiu Qiu | 2009 | Journal of Hazardous Materials2009，，1： | 1 |
| 6 | The effect of catalyst layer design on catalyst utilization in PEMFC studied via stochastic reconstruction method显示文摘Catalyst utilization is an important determinant of proton exchange membrane fuel cell performance,and increasing the catalyst utilization is one of the most critical approaches to reducing the catalyst loading in PEMFC.4-phase stochastic reconstruction method based on the variable-resolution Quartet Structure Generation Set(QSGS)algorithm is utilized to elucidate the influence of different parameters of electrode preparation,including the porosity,the dispersion degree of carbon agglomerate,ionomer content,and carbon support size,on the catalyst utilization in the catalyst layer.It was found that there exist optimal values for the porosity,dispersion degree of carbon agglomerate,ionomer content,and carbon support sizes in CLs and any deviations from these optimal values would lead to transport issues of electron,proton and mass within CLs.Taking electron,proton and mass transport into consideration simultaneously,the optimal Pt utilization is 46.55%among 48 cases in this investigation,taken at the carbon support diameter of 40 nm,the porosity of 0.4,the agglomerate spatial density of 25μm^(−3) and I/C at 0.7.The selection of porosity,ultrasonic dispersion technique and ionomer content for conventional electrode preparation requires compromises on mass,electron and proton transport,leading to catalyst utilization in CLs hardly exceeding 50%.Therefore,the next generation of catalyst layer design and preparation technology is desired. | Congfan Zhao Shu Yuan Xiaojing Cheng Zhifeng Zheng Jia Liu Jiewei Yin Shuiyun Shen Xiaohui Yan Junliang Zhang | 2023 | Energy and AI2023，13，3： | 1 |
| 7 | Understanding energetic disorder in electron-deficient-core-based non-fullerene solar cells显示文摘Recent advances in material design for organic solar cells(OSCs)are primarily focused on developing near-infrared nonfullerene acceptors,typically A-DA′D-A type acceptors(where A abbreviates an electron-withdrawing moiety and D,an electron-donor moiety),to achieve high external quantum efficiency while maintaining low voltage loss.However,the charge transport is still constrained by unfavorable molecular conformations,resulting in high energetic disorder and limiting the device performance.Here,a facile design strategy is reported by introducing the'wing'(alkyl chains)at the terminal of the DA′D central core of the A-DA′D-A type acceptor to achieve a favorable and ordered molecular orientation and therefore facilitate charge carrier transport.Benefitting from the reduced disorder,the electron mobilities could be significantly enhanced for the'wing'-containing molecules.By carefully changing the length of alkyl chains,the mobility of acceptor has been tuned to match with that of donor,leading to a minimized charge imbalance factor and a high fill factor(FF).We further provide useful design strategies for highly efficient OSCs with high FF. | Jun Yuan Chujun Zhang Honggang Chen Can Zhu Sin Hang Cheung Beibei Qiu Fangfang Cai Qingya Wei Wei Liu Hang Yin Rui Zhang Jidong Zhang Ye Liu Huotian Zhang Weifang Liu Hongjian Peng Junliang Yang Lei Meng Feng Gao Shukong So Yongfang Li Yingping Zou | 2020 | Science China Chemistry2020，63，8： | 1 |
| 8 | Borehole stability analysis of horizontal drilling in shale gas reservoirs显示文摘 | Yuan Junliang Deng Jingen Qiang Tan | 2013 | Rock Mechanics Rock Engineering2013，46，： | 1 |
| 9 | Large-scale roll-to-roll printed,flexible and stable organic bulk heterojunction photodetector显示文摘A flexible and stable photodetector shows great potential applications in intelligent wearable devices,health monitoring,and biological sensing.The high-output fabrication of flexible and stable photodetector via the large-scale printing process would accelerate its commercialization.Herein,a high performance,flexible organic bulk heterojunction(BHJ)photodetector with good stability is designed and fabricated via a large-scale roll-to-roll(R2R)micro-gravure printing technique on polyethylene terephthalate(PET)or paper substrate,in which the organic BHJ active layer is structured with[6,6]-phenyl C_(61)butyric acid methyl ester(PCBM)and a donor-acceptor copolymer,i.e.,employing 4,8-bis(2-ethylhexylthiophene)benzo[1,2-b;3,4-b′]dithiophene(BDTT)as the donor unit and 5,8-bis(5-thiophen-2-yl)-6,7-difluoro-2,3-bis(4-ethylhexyloxy-1-mata-luorophenyl)quinoxaline(ffQx)as the acceptor unit(PBDTT-ffQx).The PBDTT-ffQx/PCBM BHJ photodetector shows a broad photoresponse in ultraviolet and visible light,a high detectivity(D^(*))value up to 6.19×10^(11)Jones,and an excellent Iphoto/Idark as high as 5.6×10^(2).It exhibits excellent flexibility and stability.Its performance parameters could maintain over 80%of original values after bending 10,000 cycles or exposing in ambient condition(humidity~50%,temperature~30℃)for 50 days without any encapsulation.More importantly,the R2R micro-gravure printed PBDTT-ffQx/PCBM BHJ active layer is great homogeneous,and the responsivity(R)values of photodetector arrays show a very narrow distribution.The research results show that a high-performance PBDTT-ffQx/PCBM BHJ photodetector with well reliability and reproducibility can be fabricated via the R2R micro-gravure printing technique,which provides an available strategy for fabricating large-area and flexible electronic and optoelectronic devices. | Sichao Tong Jun Yuan Chujun Zhang Chunhua Wang Baoxing Liu Jianqiang Shen Huayan Xia Yingping Zou Haipeng Xie Jia Sun Si Xiao Jun He Yongli Gao Junliang Yang | 2018 | npj Flexible Electronics2018，2，1： | 0 |
| 10 | Etherified dicyandiamide condensation copolymer as a wet-end additive for papermaking显示文摘Dicyandiamide-formaldehyde condensation copolymer was synthesized and used as a wet-end additive for papermaking.The retention of fibers and fines was used as a performance index.Factors were evaluated governing the performance of the polymer,including polymer dosage,pH and mixing time.The optimum dosage of the polymer was found to be 0.03%under the conditions.Overall,the polymer was effective in improving the drainage,as well as the retention of fibers and fines in papermaking process。 | Heng Zhang Pengfei Li Hongkun Gao Lei Xu Junliang Lu Xiaoyue Peng Fenglong Zhanga Yuan Zhang | 2018 | Journal of Bioresources and Bioproducts2018，3，2： | 0 |
| 11 | Half‑Power Prediction and Its Application on the Energy Management Strategy for Fuel Cell City Bus显示文摘The fuel cell hybrid powertrain is a potential power supply system for fuel cell vehicles.The underlying problem is that the fuel cell vehicles encounter exhaustive hydrogen consumption.To effectively manage hydrogen consumption,the aim is to propose fuel cell city bus power and control system.The underlying idea is to determine the target power of fuel cell through simulation study on fuel cell and battery energy management strategy and road test verifications.A half-power prediction energy management strategy is implemented to predict the target power of the fuel cell in the current time step based on the demand power of the vehicle and the state of charge(SOC)of the battery in the previous time steps.This offers better understanding of the correlation between fuel cell power and vehicle drive cycle for enabling effective power supply management.The research results show that the half-power prediction energy management strategy effectively reduces the hydrogen consumption of the vehicle by 7.1%and the number of battery cycle by 6.0%,compared to the stepped manage-ment strategy of battery SOC.When applied to a 12-m fuel cell city bus—F12,specially designed and manufactured for the Winter Olympic Games in 2022—the fuel economy of 3.7 kg/100 km is achieved in urban road conditions.This study lays a foundation for providing the powertrain configuration and energy management strategy of fuel cell city bus. | Longhai Zhang Lina Ning Xueqing Yang Sheng Zeng Tian Yuan Gaopeng Li Changchun Ke Junliang Zhang | 2023 | Automotive Innovation2023，6，1： | 0 |
| 12 | Vertical graphene-coated Cu wire for enhanced tolerance to high current density in power transmission显示文摘Cu wires(CuWs)are widely used as electric transmission lines.However,their limited thermal and chemical stabilities become challenges under the high-power and harsh environment.Graphene is regarded as an ideal protective barrier for CuW benefiting from its impermeability to all atoms and molecules.Particularly,the excellent hydrophobicity of vertical graphene(VG)will strengthen its protective capability as a corrosion and oxidation barrier.Herein,VG is directly synthesized on CuW by plasmaenhanced chemical vapor deposition method.The hydrophobic VG coating with a high water contact angle can effectively exclude the corrosive liquid and moisture from CuW surface and prevent their further penetration.Consequently,the electrochemical corrosion rate of VG-CuW is reduced by~13,8,and 2 times,compared with bare CuW,VG-CuW with hydrophilic treatment,and CuW coated with thick horizontal graphene layers,respectively.Negligible oxidation occurs on VGCuW after the long-time exposure to humid air at~200℃ along with the largely enhanced tolerance under high-current operating condition.This study reveals the impressive potentials of hydrophobic VG as a robust corrosion and oxidation barrier for metal wires used in high-power cables and electronic devices in harsh environment. | Kun Wang Shuting Cheng Qingmei Hu Feng Yu Yi Cheng Kewen Huang Hao Yuan Jun Jiang Wenjuan Li Junliang Li Shichen Xu Jianbo Yin Yue Qi Zhongfan Liu | 2022 | Nano Research2022，15，11： | 0 |
| 13 | Achieving ultrahigh electrochemical performance by surface design and nanoconfined water manipulation显示文摘The effects of nanoconfined water and the charge storage mechanism are crucial to achieving the ultrahigh electrochemical performance of two-dimensional transition metal carbides(MXenes). We propose a facile method to manipulate nanoconfined water through surface chemistry modification. By introducing oxygen and nitrogen surface groups, more active sites were created for TiCMXene, and the interlayer spacing was significantly increased by accommodating three-layer nanoconfined water. Exceptionally high capacitance of 550 F g(2000 F cm) was obtained with outstanding high-rate performance. The atomic scale elucidation of the layer-dependent properties of nanoconfined water and pseudocapacitive charge storage was deeply probed through a combination of ‘computational and experimental microscopy’. We believe that an understanding of, and a manipulation strategy for, nanoconfined water will shed light on ways to improve the electrochemical performance of MXene and other two-dimensional materials. | Haisheng Li Kui Xu Pohua Chen Youyou Yuan Yi Qiu Ligang Wang Liu Zhu Xiaoge Wang Guohong Cai Liming Zheng Chun Dai Deng Zhou Nian Zhang Jixin Zhu Jinglin Xie Fuhui Liao Hailin Peng Yong Peng Jing Ju Zifeng Lin Junliang Sun | 2022 | National Science Review2022，9，6： | 0 |
| 14 | Effect of methylprednisolone therapy on hospital stay and viral clearance in patients with moderate COVID-19显示文摘Background:The benefits and harms of methylprednisolone treatment in patients with moderate coronavirus disease 2019(COVID-19)remain controversial.In this study,we investigated the effect of methylprednisolone on mortality rate,viral clearance,and hospitalization stay in patients with moderate COVID-19.Methods:This retrospective study included 4827 patients admitted to Wuhan Huoshenshan and Wuhan Guanggu hospitals from February to March 2020 diagnosed with COVID-19 pneumonia.The participants’epidemiological and demographic data,comorbidities,laboratory test results,treatments,outcomes,and vital clinical time points were extracted from electronic medical records.The primary outcome was in-hospital death;secondary outcomes were time from admission to viral clearance and hospital stay.Univariate and multivariate logistic or linear regression analysis were used to assess the roles of methylprednisolone in different outcomes.The propensity score matching(PSM)method was used to control for confounding factors.Results:A total of 1320 patients were included in this study,of whom 100 received methylprednisolone.Overall,in-hospital mortality was 0.91%(12/1320);the 12 patients who died were all in the methylprednisolone group,though multivariate logistic regression analysis showed methylprednisolone treatment was not a risk factor for in-hospital death in moderate patients before or after adjustment for confounders by PSM.Methylprednisolone treatment was correlated with longer length from admission to viral clearance time and hospital stay before and after adjustment for confounders.Conclusions:Methylprednisolone therapy was not associated with increased in-hospital mortality but with delayed viral clearance and extended hospital stay in moderate COVID-19 patients. | Xiaoyan Li Xin Yuan Zhe Xu Lei Huang Lei Shi Xuechun Lu Fu-Sheng Wang Junliang Fu | 2022 | Infectious Medicine2022，1，4： | 0 |
| 15 | Clinical Epidemiology,Illness Profiles,and the Implication of COVID-19 Before and After the Nationwide Omicron Outbreak During the Winter of 2022显示文摘China.In this study,we aimed to investigate the clinical characteristics and outcomes of patients with coronavirus disease 2019(COVID-19)in the Beijing region.Methods:In this retrospective study,we enrolled inpatients admitted for COVID-19 in the Fifth Medical Center of Chinese PLA General Hospital in Beijing between November 10,2022,and January 30,2023.Demographic and clinical features and treatment outcomeswere comprehensively analyzed.We used logistic regression and linear regression analyses to explore the risk factors associated with disease severity and time of nucleic acid conversion,respectively.Results:A total of 1010 hospitalized patients with COVID-19 were enrolled.The median age was 43.0 years(interquartile range,28.0–63.0),and patients aged<60 years and≥60 years comprised 71.2%and 28.8%of total included patients,respectively.The clinical classification of mild(74.6%,753/1010),moderate(21.0%,212/1010),severe(2.7%,27/1010),and unidentified(1.8%,18/1010)was separately recorded;1005 patients were discharged,and 5 patients died in the hospital.The outbreak of the emerging epidemic witnessed an evident increase in the proportion of moderate(42.9%vs.16.4%)and severe(10.3%vs.1.1%)cases after December 7,2022.Patients with a moderate/severe classification had higher levels of procalcitonin,IL-6,serum ferritin,C-reactive protein,lactic dehydrogenase,serum urea nitrogen,and D-dimer and lower counts of CD4+T,CD8+T,and B cells(all P<0.001).Multivariable regression analysis revealed that increased odds of disease severity were associated with the following factors:age≥60 years,IL-6>7 pg/mL,lactic dehydrogenase level>245 U/L,cough,and fever at admission.Age≥80 years and chronic lung diseasewere independent risk factors in the nonmild group in elderly patients.In addition,the duration for nucleic acid to turn negativewas approximately 5.0 d(interquartile range,3.0–7.0).Prolonged time of nucleic acid conversion was associated with age≥60 years,serum urea nitrogen level>8.2 mmol/L,neutrophil count>7×10^(9)/L,and the presence of a chronic lung disease or carcinoma.Finally,unvaccinated patients accounted for 37.3%of enrolled patients;children and the elder people accounted for approximately half of that.The univariable analysis found that booster doses reduced disease severity and shortened the time of nucleic acid conversion in elderly patients.Conclusions:The outbreak ofOmicron rapidly increased the number of patientswith COVID-19 in Beijing.In elderly patients,booster doses may reduce disease severity and shorten the time of nucleic acid conversion.Healthcare systems should be optimized before an emerging epidemic outbreak. | Yuming Guo Zhe Xu Wen-Xin Wang Cheng Zhen Jinhua Hu Jinsong Mu Chengcheng Ji Xin Yuan Ruonan Xu Lei Huang Lei Shi Fanping Meng Junliang Fu Shuangnan Zhou Siyu Wang Fengyi Li Bo Tu Dawei Zhang Huihuang Huang Yufeng Mao Wen Xu Chao Zhang Xiuying Mu Jun Zhao Bo Jin Haibin Su Yinying Lu Yongqian Cheng Dong Ji Shaoli You Jinghui Dong Changchun Liu Mengmeng Zhang Yuanyuan Li Tianjun Jiang Yonggang Li Fu-Sheng Wang | 2023 | Infectious Diseases & Immunity2023，3，4： | 0 |
| 16 | Constructing recombinant replication-defective adenoviral vectors that express glucose transporter-1 through in vitro ligation显示文摘BACKGROUND: We constructed a homologous recombination bacterial method based on the pAdEasy system, a widely used system, for generating recombinant adenoviral vectors that express glucose transporter-1 (GLUT1) in rats. OBJECTIVE: This study was designed to investigate the feasibility of generating recombinant replication-defective adenoviral vectors that express GLUT1 in rats by in vitro ligation based on the Adeno-XTM system. DESIGN: An in vitro cell-based experiment. SETTING: This study was performed at the Linbaixin Medical Research Center of the Second Hospital Affiliated to Sun Yat-sen University and Central Laboratory for Prevention and Treatment of Tumor, Sun Yat-sen University between January and August 2004. MATERIALS: Male, adult, Sprague Dawley rats were used to extract total RNA from brain tissue. E. coli DH5 α and human embryonic kidney 293 cells (HEK293 cells) used in the present study were cryo-preserved by the Second Hospital Affiliated to Sun Yat-sen University. Rabbit anti-rat GLUT1 polyclonal antibody (Chemicon, U.S.A.) and primers (Shanghai Boya Bioengineering Co., Ltd) were also used. METHODS: E1/E3-deleted replication-defective adenoviral vectors were used. Using in vitro ligation, the target gene was first sub-cloned into a shuttle vector plasmid to obtain the fragment containing target gene expression cassettes by enzyme digestion. Subsequently, the fragment was co-transformed with linearized adenoviral backbone vector into the E. coli strain. The recombinant adenoviral plasmid was transfected into HEK293 cells to assembly recombinant adenoviral vectors with replication capabilities. The procedure was repeated several times for recombinant adenoviral vectors amplification. MAIN OUTCOME MEASURES: Efficiency of recombinant adenoviral vectors to express the target gene was measured by gene and protein expression through polymerase chain reaction and Western Blot assays, respectively. RESULTS: Results demonstrated that recombinant adenoviral vectors successfully expressed GLUT1 protein, with a relative molecular mass of 55000 in HEK293 cells. These results suggest that recombinant adenoviral vectors obtained by homologous bacterial recombination feature high efficiency, rapidness, and simplicity. CONCLUSION: We successfully amplified the rat GLUT1 gene and constructed replication-defective adenoviral vectors expressing GLUT1. The replication-defective adenoviral vectors proved to successfully express the target gene in HEK293 cells. | Fangcheng Li Junliang Li Ranyi Liu Xinke Xu Kaichang Yuan Zhonghua Wu | 2008 | Neural Regeneration Research2008，3，4： | 0 |
| 17 | Legionella sainthelensi Pneumonia with Abdominal Symptoms as Prominent Manifestations:A Case Report显示文摘Fewstudies have reported Legionella sainthelensi infection.This infection primarily presents with respiratorymanifestations.Here,we report an immunocompromised patient with cavitary pneumonia caused by L.sainthelensi who mainly had abdominal symptoms.The timely administration of moxifloxacin provided clinical improvement and resolution of symptoms.To our knowledge,this is one of the rare cases of L.sainthelensi infection presenting uniquelywith abdominal distension and liver function impairment butwithout obvious respiratory symptoms. | Xin Yuan Fanglin Meng Xinting Yu Changqing Bai Rui Jia Fanping Meng Fu-sheng Wang Junliang Fu | 2022 | Infectious Diseases & Immunity2022，2，4： | 0 |
| 18 | Bi_(2)O_(2)Se nanoplates for broadband photodetector and full-color imaging applications显示文摘Broadband light detection and sensing are widely applied in modern technology.As a promising candidate for next-generation two-dimensional(2D)optoelectronic material,bismuth oxyselenide(Bi_(2)O_(2)Se)nanoplates exhibit many prospects in the application of visible light detection due to their peculiar properties.In this work,we report the photodetection performance of single-crystal 2D Bi_(2)O_(2)Se nanoplates grown on SiO_(2)based on a ternary-alloy growth model by utilizing chemical vapor deposition(CVD).The Bi_(2)O_(2)Se nanoplates were found to have an even and uniform square shape with side lengths up to 15μm and an approximate thickness of 15 nm.A visible-light photodetector was fabricated based on a CVD-grown Bi_(2)O_(2)Se nanoplate,and characterized by a set of illumination experiments using a 400 nm laser at temperatures ranging from 77 to 370 K.The device exhibited superior performance at the temperature of 77 K,with a responsivity of 523 A/W,a specific detectivity of 1.37×10^(11)Jones,a response time of 0.2175 ms,an external quantum efficiency of 162,119.44%,resulting in high-quality and fullcolor imaging in the visible spectrum.These results indicate that the single-crystalline Bi_(2)O_(2)Se nanoplates have excellent potential in broadband photodetection and non-cryogenic imaging. | Han Wang Songqing Zhang Xingxuan Wu Huijia Luo Junliang Liu Zesheng Mu Ruirui Liu Guang Yuan Yujun Liang Jin Tan Yongling Ren Wen Lei | 2023 | Nano Research2023，16，5： | 0 |
| 19 | Effect of Methylprednisolone on Mortality and Clinical Courses in Patients with Severe CoVID-19: A Propensity Score Matching Analysis显示文摘Background Whether methylprednisolone therapy can reduce the mortality rate of patients with severe coronavirus disease 2019(COVID-19)remains controversial,and its effects on the length of hospital stay and virus shedding time are also unknown.This retrospective study investigates the previous issues to provide more evidence for methylprednisolone treatment in severe COVID-19.Methods This retrospective study included 563 of 4827 patients with confirmed COVID-19 admitted to Wuhan Huoshenshan Hospital or Wuhan Guanggu Hospital between February 3,2020 and March 30,2020 who met the screening criteria.The participants’epidemiological and demographic data,comorbidities,laboratory test results,treatments,outcomes,and vital clinical time points were extracted from electronic medical records.The primary outcome was in-hospital death,and the secondary outcomes were 2 clinical courses:length from admission to viral clearance and discharge.Univariate and multivariate logistic or linear regression analyses were used to assess the role of methylprednisolone in different outcomes.Propensity score matching was performed to control for confounding factors.Results Of the 563 patients who met the screening criteria and were included in the subsequent analysis,138 were included in the methylprednisolone group and 425 in the nonmethylprednisolone group.The in-hospital death rate between the methylprednisolone and nonmethylprednisolone groups showed a significant difference(23.91%vs.1.65%,P<0.001),which was maintained after propensity score matching(13.98%vs.5.38%,P=0.048).However,univariate logistic analysis in the matched groups showed that methylprednisolone treatment(odds ratio[OR],5.242;95%confidence interval[CI],0.802 to 34.246;P=0.084)was not a risk factor for in-hospital death in severe patients.Further multivariate logistic regression analysis found comorbidities(OR,3.327;95%CI,1.702 to 6.501;P<0.001),lower lymphocyte count(OR,0.076;95%CI,0.012 to 0.461;P=0.005),higher lactate dehydrogenase(LDH)levels(OR,1.008;95%CI,1.003 to 1.013;P=0.002),and anticoagulation therapy(OR,11.187;95%CI,2.459 to 50.900;P=0.002)were associated with in-hospital mortality.Multivariate linear regression analysis in the matched groups showed that methylprednisolone treatment was not a risk factor for a prolonged duration from admission to viral clearance(βValue 0.081;95%CI,−1.012 to 3.657;P=0.265)or discharge(βValue 0.114;95%CI,−0.723 to 6.408;P=0.117).d-dimer(βValue,0.144;95%CI,0.012 to 0.817;P=0.044),LDH(βValue 0.260;95%CI,0.010 to 0.034;P<0.001),and antiviral therapy(βValue 0.220;95%CI,1.373 to 6.263;P=0.002)were associated with a longer length from admission to viral clearance.The lymphocyte count(βValue−0.206;95%CI,−6.248 to−1.197;P=0.004),LDH(βValue 0.231;95%CI,0.012 to 0.048;P=0.001),antiviral therapy(βValue 0.143;95%CI,0.058 to 7.497;P=0.047),and antibacterial therapy(βValue 0.152;95%CI,0.133 to 8.154;P=0.043)were associated with a longer hospitalization duration from admission to discharge.Further stratified analysis revealed that the low daily dose group(≤60 mg/d)and the low total dose group(≤200 mg)had shorter duration from admission to viral clearance(Z=−2.362,P=0.018;Z=−2.010,P=0.044)and a shorter hospital stay(Z=−2.735,P=0.006;Z=−3.858,P<0.001).Conclusions In patients with severe COVID-19,methylprednisolone is safe and does not prolong the duration from admission to viral clearance or discharge.Low-dose,short-term methylprednisolone treatment may be more beneficial in shortening the disease course. | Xiaoyan Li Xin Yuan Zhe Xu Lei Shi Lei Huang Xuechun Lu Junliang Fu | 2023 | Infectious Diseases & Immunity2023，3，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员