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| 1 | 42,573 cases of hepatectomy in China: a multicenter retrospective investigation显示文摘Hepatectomy is currently routinely performed in most hospitals in China. China owns the largest population of liver diseases and the biggest number of liver resection cases. A nationwide multicenter retrospective investigation involving 112 hospitals was performed, and focused on liver resection for patients with hepatocellular carcinoma(HCC). 42,573 cases of hepatectomy were enrolled, and 18,275 valid cases of liver resection for HCC patients were selected for statistical analysis. The epidemiology of HCC, distribution of hepatectomy, postoperative complications and prognosis were finally analyzed. In the 18,275 HCC patients,81% had hepatitis B virus infection and 10% had hepatitis C virus infection. 38% of the HCC patients had normal Alphafetoprotein(AFP) level, and other 35% had an AFP level lower than 400 ng mL^(-1). In the study period, 97% of the hepatectomy for HCC were treated with open surgery, and 23.81% had vascular exclusion techniques. The operation time was(191.7±105.6) min,the blood loss was(546.0±562.8) m L, and blood transfusion was(543.0±1,035.2) m L. The median survival for HCC patients was 631 days, with 1-, 3-, and 5-year overall survival of 73.2%, 28.8% and 19.6%, respectively. Liver cirrhosis, multiple nodules,tumor thrombosis and high AFP level were risk factors that affect postoperative survival. | Binhao Zhang Bixiang Zhang Zhiwei Zhang Zhiyong Huang Yifa Chen Minshan Chen Ping Bie Baogang Peng Liqun Wu Zhiming Wang Bo Li Jia Fan Lunxiu Qin Ping Chen Jingfeng Liu Zhe Tang Jun Niu Xinmin Yin Deyu Li Songqing He Bin Jiang Yilei Mao Weiping Zhou Xiaoping Chen | 2018 | Science China(Life Sciences)2018，61，6： | 39 |
| 2 | Processing of advanced thermoelectric materials显示文摘Last two decades have witnessed significant progress in thermoelectric research,to which materials processing has crucial contributions.Compared with traditional zone-melting method used for fabricating bismuth telluride alloys,new powder-based processes have more freedom for manipulating nanostructures and nanocomposites.Thermoelectric performance enhancement is realized in most thermoelectric materials by introducing fine-grained and nano-composite structures with accurately controlled compositions.This review gives a comprehensive summary on the processing aspects of thermoelectric materials with three focuses on the powder synthesis,advanced sintering process and the formation of nano structures in bulk materials. | LI JingFeng PAN Yu WU ChaoFeng SUN FuHua WEI TianRan | 2017 | Science China(Technological Sciences)2017，60，9： | 13 |
| 3 | Effect of Cyclocarya paliurus polysaccharides on streptozotocin-induced diabetic nephropathy in rats显示文摘OBJEVTIVE:To investigate the efficacy of Cyclocarya paliurus(C.paliurus)polysaccharides on streptozotocin-induced diabetic nephropathy in rats.METHODS:Rats were divided into 6 groups,including group of normal control,group of diabetic control,group of metformin treatment,low-dose group of C.paliurus polysaccharides treatment,middle-dose group of C.paliurus polysaccharides treatment and high-dose group of C.paliurus polysaccharides treatment.Histological analysis of kidney was analyzed using hematoxilin and eosin.Levels of blood glucose,creatinine,urea,uric acid were determined by spectrophotometry.Anti-oxidative enzymes were measured by real-time polymerase chain reaction(PCR)and enzyme-linked immunosorbent assay(ELISA).Advanced glycation end products(AGEs)and transforming growth factor-β1(TGF-β1)level was measured by ELISA.RESULTS:Abnormal changes were observed in the group of diabetic control characterized by atrophy of the renal glomeruli with hypercellularity,congestion of glomerular tufts,dilation of the renal spaces,and degeneration of renal tubule.Compared with that of normal group,blood glucose,creatinine,urea,uric acid level was significantly increased in the group of diabetic control.Superoxide dismutase,catalase,glutathione peroxidase,glutathione reductase level was significantly decreased,but AGEs and TGF-β1 level was significantly increased.By contrast,administration of C.paliurus polysaccharides and metformin could reverse the above-mentioned results of the group of diabetic control,especially in the high-dose group of C.paliurus polysaccharides.CONCLUSION:Our findings suggest that C.paliurus polysaccharides may play a protecting role for nephropathy of diabetic rats by lowering glucose,creatinine,urea,uric acid level,enhancing the antioxidative ability,and reducing AGEs and TGF-β1 expression. | Xia Xichao Mao Dongxue Dai Hongmei Wu Xi Zhang Zuyuan Wang Huaying Zhou Wenwen Dong Yanmei Wang Mengqi Li Yuan Shao Xiangyang Ouyang Jingfeng | 2020 | Journal of Traditional Chinese Medicine2020，40，6： | 9 |
| 4 | Forms and Balance of Nitrogen and Phosphorus in Cage Culture Waters in Guangdong Province, China显示文摘In order to approach the characteristics of nitrogen and phosphorus pollution caused by cage culture and the balance of nitrogen and phosphorus during the process of cage culture, a monitoring was conducted in Daya Bay of Guangdong Province, China from April 2002 to Jane 2003. The results show that the concentrations of total nitrogen (TN) in the waters at the sites with five and ten years of cage culture history are 1.8 and 2.3 times of that at control site respectively. Ammonium (NH3-N) is the main form of nitrogen in spring while nitrate ( NO3 -) in winter. The concentrations of TN, total dissolved nitrogen (TDN) and dissolved organic nitrogen (DON) are highest in autumn. The concentration of phosphorus increases with the increasing of the culturing time, among which phosphate ( PO 34-) increases most obviously. The concentrations of total phosphorus (TP) and total dissolved phosphorus (TDP) are highest in autumn. The nitrogen and phosphorus are accumulated significantly in the sediment of cage culture area. The model of N balance in the cage culture area: bait (70.62%) + fry (0.28%) + input by tide (14.8%) + release from sediment (14.3%) = harvest of adult fish (12.07%) + deposition into sediment (28.75%) + output by tide (56.18%) + others (3.00%). The model of P balance: bait (83.11%) + fry (0.17%) + input by tide (12.23%) + release from sediment (4.49%) = harvest of adult fish (8.43%) + deposition into sediment (48.59%) + output by tide (41.94%) + others (1.04%). In one fish growth year, the contents of nitrogen and phosphorus in harvest of adult fish are only 17.0% and 10.1% of the contents of nitrogen and phosphorus in fish bait and fry, wherein 83% of nitrogen and more than 89% of phosphorus in fish bait became marine pollutants. | WEN Yanmao WEI Xiange SHU Tingfei ZHOU Jingfeng YU Guanghui LI Feng HUANG Yanyun | 2007 | Chinese Geographical Science2007，17，4： | 9 |
| 5 | Kinetics of the hydrogen absorption and desorption processes of hydrogen storage alloys: A review显示文摘High hydrogen absorption and desorption rates are two significant index parameters for the applications of hydrogen storage tanks.The analysis of the hydrogen absorption and desorption behavior using the isothermal kinetic models is an efficient way to investigate the kinetic mechanism.Multitudinous kinetic models have been developed to describe the kinetic process.However,these kinetic models were de-duced based on some assumptions and only appropriate for specific kinetic measurement methods and rate-controlling steps(RCSs),which sometimes lead to confusion during application.The kinetic analysis procedures using these kinetic models,as well as the key kinetic parameters,are unclear for many researchers who are unfamiliar with this field.These problems will prevent the kinetic models and their analysis methods from revealing the kinetic mechanism of hydrogen storage alloys.Thus,this review mainly focuses on the summarization of kinetic models based on different kinetic measurement methods and RCSs for the chemisorption,surface penetration,diffusion of hydrogen,nucleation and growth,and chemical reaction processes.The analysis procedures of kinetic experimental data are expounded,as well as the effects of temperature,hydrogen pressure,and particle radius.The applications of the kinetic models for different hydrogen storage alloys are also introduced. | Qian Li Xi Lin Qun Luo Yuʼan Chen Jingfeng Wang Bin Jiang Fusheng Pan | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，1： | 9 |
| 6 | Effects of Y on the Microstructure, Mechanical and Bio-corrosion Properties of Mg-Zn-Ca Bulk Metallic Glass显示文摘The micro-alloying effects of Y on the microstructure, mechanical properties, and bio-corrosion behavior of Mg69-xZn27Ca4Yx(x= 0, 1, 2 at.%) alloys were investigated through X-ray diffraction, compressive tests,electrochemical treatments, and immersion tests. The Mg69Zn27Ca4 alloy was found to be absolutely amorphous, and its glass-forming ability decreased with the addition of Y. The Mg68Zn27Ca4Y1 alloy exhibited an ultrahigh compressive strength above 1010 MPa as well as high capacity for plastic strain above 3.1%.Electrochemical and immersion tests revealed that these Y-doped MgeZ neC a alloys had good bio-corrosion resistance in simulated body fluid(SBF) at 37℃. The results of the cytotoxicity test showed high cell viabilities for these alloys, which means good bio-compatibility. | Jingfeng Wang Yang Li Song Huang Yiyun Wei Xingfeng Xi Kaiyong Cai Fusheng Pan | 2014 | Journal of Materials Science & Technology2014，30，12： | 8 |
| 7 | Role of transient receptor potential vanilloid subetype 1 in the increase of thermal pain threshold by moxibustion显示文摘OBTECTIVE:To explore the role of transient receptor potential vaniiloid subetype 1(TRPV1) in the increase of the thermal pain threshold by moxibustion.METHODS:Forty Kunming mice(20 ± 2) g were randomized into control group,capsaicin group,capsazepine group,moxibustion group and moxibustion + capsazepine(MC) group with 8 mice in each,and 16 C57BL/6 wild-type mice(18 ± 2) g were randomized into wild-type(WT) control group and WT moxibustion group with 8 mice in each,and 14 TRPV1 knockout mice(18 ± 2) g were randomized into knockout(KO) control group and KO moxibustion group with 7 in each.Each mouse in the capsaicin group was subcutaneously injected with the amount of 0.1 mL/10 g into L5 and L6 spinal cords;each mouse in the capsazepine group was intraperitoneally injected with the amount of0.1 mL/10 g.Similarly,each mouse in the moxibustion group was given a suspended moxibustion with specially-made moxa-stick for 20 min on L5 and L6 spinal cords.Each mouse in MC group was intraperitoneally injected with the amount of 0.1 mL/10 g first,then after 15 min was given a suspended moxibustion for 20 min on L5 and L6 spinal cords.Each mouse in WT moxibustion group and KO moxibustion group was given a suspended moxibustion with specially-made moxa-stick for 20 min on L5 and L6 spinal cords.The control group,WT control group and KO control group were of no treatment in any way.After all treatments were completed,the digital-display measurement instrument for thermal pain was used to measure the threshold of thermal pain in each group respectively.RESULTS:Compared with the control group,the thresholds of thermal pain in the moxibustion group and MC group were significantly increased(P <0.01);no significant changes in the thresholds in the capsaicin group and the capsazepine group(P > 0.05);compared with moxibustion group,he threshold of thermal in MC group was obviously decreased(P < 0.01).Compared with WT control group,the threshold of thermal pain in WT moxibustion group was significantly increased(P <0.01);compared with KO control group,no changes in the threshold in KO moxibustion group(P > 0.05).CONCLUSION:TRPV1 participated in the process of increasing the threshold of thermal pain by stimulating L5 and L6 of mice spinal cord with burning mosa-stick. | Li Jiejun Jiang Jingfeng | 2015 | Journal of Traditional Chinese Medicine2015，35，5： | 8 |
| 8 | The temporal and spatial fluctuation of the groundwater level along the Tarim Desert Highway显示文摘In this work, a groundwater monitor section along the Tarim Desert Highway was set up, and the groundwater level data were recorded. The temporal and spatial fluctuations of the groundwater level were analyzed based on the groundwater level measurements, hydrologic data, the groundwater/surface water interconversion theory and the groundwater dynamics. The spatial distribution of groundwater is mostly affected by sand dune height and landform variation. The four primary temporal influence factors of groundwater level can be ordered in decreasing significance as: shelterbelt pumping > vertical leakage > river flow change > runoff replenishment. The runoff replenishment has the biggest influence range, and the shelterbelt pumping has the smallest influence range. The groundwater level fluctuates annually in a natural pattern. | FAN JingLong XU XinWen LEI JaQiang ZHAO JingFeng LI ShengYu WANG HaiFeng ZHANG JianGuo ZHOU HongWei | 2008 | Chinese Science Bulletin2008，53，S2： | 6 |
| 9 | Efficacy of Bushenjianpi prescription on autoimmune premature ovarian failure in mice显示文摘OBJECTIVE: To assess the efficacy of Bushenjianpi prescription(BSJPP), a formula from Traditional Chinese Medicine, on a mouse model of autoimmune premature ovarian failure(POF) induced by mouse zona pellucida(ZP3) and to investigate the mechanisms underlying the action.METHODS: After randomization, POF was induced in the model mice by immunization with ZP3. One week later, mice received low(8.1 mg/kg), moderate(16.2 mg/kg) and high(32.4 mg/kg) doses of BSJPP by gastrogavage once daily for 90 days. Premarin(0.03 mg/kg) served as the positive group. Serum samples were collected 1 week after the last dose and stored at-20 ℃ for analysis. After cervical dislocation, the uterus and ovaries were collected aseptically for evaluation by histological assessment, scanning electron microscopy, immunohistochemical staining, and Western blot and reverse transcription-polymerase chain reaction analyses.RESULTS: Serum E2 levels in POF model mice were decreased, whereas follicle-stimulating hormone(FSH) and luteinizing hormone(LH) levels were dramatically increased. Serum levels of E2,LH and FSH were reduced in POF model mice treated with BSJPP(moderate and high doses) and premarin. Anti-bone morphogenetic protein 15(BMP-15) and connexin 43(Cx43) were repressed in autoimmune POF model mice, whereas high expression was observed in control mice and those treated with BSJPP(moderate and high doses)and premarin.CONCLUSION: BSJPP is effective in treating ZP3-induced POF in mice and the increase in the expression of BMP-15 and Cx43 may be implicated in the mechanism underpinning the action. | Feng Guilin Lin Meijiao Zhou Xiaolin Zhang Lihong Li Jing Ouyang Jingfeng | 2017 | Journal of Traditional Chinese Medicine2017，37，5： | 6 |
| 10 | Development of integrated two-stage thermoelectric generators for large temperature difference显示文摘Multi-stage thermoelectric(TE) modules can withstand a large temperature difference and can be used to obtain a high conversion efficiency. In this study, two-stage PbTe/Bi2Te3 TE modules were developed with an enhanced efficiency through a comprehensive study of device structure design, module fabrication, and performance evaluation. PbTe-based AgPbmSbTem+2(abbreviated as LAST) is a typically high ZT material, while the corresponding TE module was rarely reported so far. How to utilize LAST to fabricate high efficiency TE modules therefore remains a central problem. Finite element simulation indicates that the temperature stability of the two-stage module for LAST is better than that of two-segmented module. Compared to Cu,Ni, and Ni-Fe alloys, Co-Fe alloy is an effective metallization layer for PbTe due to its low contact resistance and thin diffusion layer. By sintering a slice of Cu on TE legs, pure tinfoil can be used as a common welding method for mid-temperature TE modules. A maximum efficiency(ηmax) of 9.5% was achieved in the range of 303 to 923 K in an optimized PbTe/Bi2Te3 based two-stage module, which was almost twice that of a commercial TE module. | PEI Jun LI LiangLiang LIU DaWei ZHANG BoPing XIAO Yu LI JingFeng | 2019 | Science China(Technological Sciences)2019，62，9： | 6 |
| 11 | China's sizeable and uncertain carbon sink: a perspective from GOSAT显示文摘Despite the agreement that China’s terrestrial ecosystems can provide a carbon sink and offset carbon dioxide(CO2)emissions from fossil fuels,the magnitude and spatial distribution of the sink remain uncertain.Accurate quantification of the carbon sequestration capacity of China’s terrestrial ecosystems has profound scientific and policy implications.Here,we report on the magnitude and patterns of China’s terrestrial carbon sink using the global monthly CO2flux data product from the Greenhouse gases Observing SATellite(GOSAT),the world’s first satellite dedicated to global greenhouse gas observation.We use the first year’s data from GOSAT(June 2009–May2010)that are currently available to assess China’s biospheric carbon fluxes.Our results show that China’s terrestrial ecosystems provide a carbon sink of-0.21 Pg C a-1.The consumption of fossil fuels in China leads to carbon dioxide emissions of 1.90 Pg C a-1into the atmosphere,approximately 11.1%of which is offset by China’s terrestrial ecosystems.China’s terrestrial ecosystems play a significant role in offsetting fossil fuel emissions and slowing down the buildup of CO2in the atmosphere.Our analysis based on GOSAT data offers a new perspective on the magnitude and distribution of China’s carbon sink.Our results show that China’s terrestrial ecosystems provide a sizeable and uncertain carbon sink,and further research is needed to reduce the uncertainty in its magnitude and distribution. | Li Zhang Jingfeng Xiao Li Li Liping Lei Jing Li | 2014 | Chinese Science Bulletin2014，59，14： | 5 |
| 12 | A bulk metal/ceramic composite material with a cellular structure显示文摘A bulk metal/ceramic composite material with a honeycomb-like micro-cell structure has been prepared by sintering the spherical Al90Mn9Ce1 alloy powders clad by Al2O3 nano-powder with the spark plasma sintering (SPS) technique. The as-prepared material consists of Al90Mn9Ce1 alloy cell and closed Al2O3 ceramic cell wall. The diameter of the cells is about 20―40 μm, while a thickness of the cell wall is about 1―2 μm. The ultimate compressive strength of the as-sintered materials is about 514 MPa, while its fracture strain is up to about 0.65 %. This composite material might possess good anti-corrosion, thermal endurance and other potential properties due to its unique microstructure. The result shows that the Al90Mn9Ce1/Al2O3 composite powders can be sintered by spark plasma sintering technique despite the large difference in their sintering temperature. This work offers a way of designing and preparing metal/ceramic composite material with functional property. | ZHAO Zhankui YAO Kefu LI Jingfeng | 2006 | Chinese Science Bulletin2006，51，2： | 5 |
| 13 | Chinese expert consensus on conversion therapy for hepatocellular carcinoma(2021 edition)显示文摘Recent advances in systemic and locoregional treatments for patients with unresectable or advanced hepatocellular carcinoma(HCC)have resulted in improved response rates.This has provided an opportunity for selected patients with initially unresectable HCC to achieve adequate tumor downstaging to undergo surgical resection,a‘conversion therapy’strategy.However,conversion therapy is a new approach to the treatment of HCC and its practice and treatment protocols are still being developed.Review the evidence for conversion therapy in HCC and develop consensus statements to guide clinical practice.Evidence review:Many research centers in China have accumulated significant experience implementing HCC conversion therapy.Preliminary findings and data have shown that conversion therapy represents an important strategy to maximize the survival of selected patients with intermediate stage to advanced HCC;however,there are still many urgent clinical and scientific challenges for this therapeutic strategy and its related fields.In order to summarize and learn from past experience and review current challenges,the Chinese Expert Consensus on Conversion Therapy for Hepatocellular Carcinoma(2021 Edition)was developed based on a review of preliminary experience and clinical data from Chinese and non-Chinese studies in this field and combined with recommendations for clinical practice.Sixteen consensus statements on the implementation of conversion therapy for HCC were developed.The statements generated in this review are based on a review of clinical evidence and real clinical experience and will help guide future progress in conversion therapy for patients with HCC. | Hui-Chuan Sun Jian Zhou Zheng Wang Xiufeng Liu Qing Xie Weidong Jia Ming Zhao Xinyu Bi Gong Li Xueli Bai Yuan Ji Li Xu Xiao-Dong Zhu Dousheng Bai Yajin Chen Yongjun Chen Chaoliu Dai Rongping Guo Wenzhi Guo Chunyi Hao Tao Huang Zhiyong Huang Deyu Li Gang Li Tao Li Xiangcheng Li Guangming Li Xiao Liang Jingfeng Liu Fubao Liu Shichun Lu Zheng Lu Weifu Lv Yilei Mao Guoliang Shao Yinghong Shi Tianqiang Song Guang Tan Yunqiang Tang Kaishan Tao Chidan Wan Guangyi Wang Lu Wang Shunxiang Wang Tianfu Wen Baocai Xing Bangde Xiang Sheng Yan Dinghua Yang Guowen Yin Tao Yin Zhenyu Yin Zhengping Yu Bixiang Zhang Jialin Zhang Shuijun Zhang Ti Zhang Yamin Zhang Yubao Zhang Aibin Zhang Haitao Zhao Ledu Zhou Wu Zhang Zhenyu Zhu Shukui Qin Feng Shen Xiujun Cai Gaojun Teng Jianqiang Cai Minshan Chen Qiang Li Lianxin Liu Weilin Wang Tingbo Liang Jiahong Dong Xiaoping Chen Xuehao Wang Shusen Zheng Jia Fan 无 | 2022 | Hepatobiliary Surgery and Nutrition2022，11，2： | 4 |
| 14 | Functions of p53 in pluripotent stem cells显示文摘Pluripotent stem cells(PSCs)are capable of unlimited self-renewal in culture and differentiation into all functional cell types in the body,and thus hold great promise for regenerative medicine.To achieve their clinical potential,it is critical for PSCs to maintain genomic stability during the extended proliferation.The critical tumor suppressor p53 is required to maintain genomic stability of mammalian cells.In response to DNA damage or oncogenic stress,p53 plays multiple roles in maintaining genomic stability of somatic cells by inducing cell cycle arrest,apoptosis,and senescence to prevent the passage of genetic mutations to the daughter cells.p53 is also required to maintain the genomic stability of PSCs.However,in response to the genotoxic stresses,a primary role of p53 in PSCs is to induce the differentiation of PSCs and inhibit pluripotency,providing mechanisms to maintain the genomic stability of the self-renewing PSCs.In addition,the roles of p53 in cellular metabolism might also contribute to genomic stability of PSCs by limiting oxidative stress.In summary,the elucidation of the roles of p53 in PSCs will be a prerequisite for developing safe PSC-based cell therapy. | Xuemei Fu Shouhai Wu Bo Li Yang Xu Jingfeng Liu | 2020 | Protein & Cell2020，11，1： | 4 |
| 15 | High-temperature Electric Properties of Polycrystalline La-doped CaMnO_3 Ceramics显示文摘Polycrystalline La-doped CaMnO3 ceramics have been prepared by a solid-state sintering method.Analysis of microstructure and phase composition indicates that the addition of La can prohibit the further growth of grain,and no impurity phase appears.The results revealed that the La doping can lead to a large change of the activation energy(from 0.22 to 0.02 eV),and thus result in a marked increase in electric conductivity of 2-4 orders of magnitude.The power factor can reach about 1.5×10-4 W·m-1·K-2 in a wide temperature range,which potentially make them attractive for n-type high-temperature thermoelectric materials. | Jinle Lan Yuanhua Lin Ao Mei Cewen Nan Yong Liu Boping Zhang Jingfeng Li | 2009 | Journal of Materials Science & Technology2009，25，4： | 3 |
| 16 | The tuning of pore structures and acidity for Zn/Al layered double hydroxides:The application on selective hydrodesulfurization for FCC gasoline显示文摘Co–Mo catalysts applied on the hydrodesulfurization(HDS) for FCC gasoline were prepared with Zn–Al layered double hydroxides(LDHs) to improve their performances,and the effects of pore structures and acidity on HDS performances were studied in detail. A series of Zn–Al/LDHs samples with different pore structures and acidities are synthesized on the bases of co-precipitation of OH-,CO2-,Al3+,and Zn2+. The neutralization p H is a main factor to affect the pore structures and acidity of Zn–Al/LDHs,and a series of Zn–Al/LDHs with different pore structures and acidities are obtained. Based on the representative samples with different specific surface areas(SBET) and acidities,three Co Mo/LDHs catalysts were prepared,and their HDS performances were compared with traditional Co Mo/Al2O3 catalysts. The results indicated that catalysts prepared with high SBETpossessed high HDS activity,and Br?nsted acid sites could reduce the thiol content in the product to some extent. All the three catalysts prepared with LDHs displayed little lower HDS activity but higher selectivity than Co Mo/Al2O3,and could restrain the reactions of re-combination between olefin and H2 S which could be due to the existence of Br?nsted acid sites. | Tinghai Wang Jingfeng Li Yi Su Chenchen Wang Yuan Gao Lingjun Chou Wenjun Yao | 2015 | Journal of Energy Chemistry2015，24，4： | 3 |
| 17 | A novel biodegradable Mg-1Zn-0.5Sn alloy:Mechanical properties,corrosion behavior,biocompatibility,and antibacterial activity显示文摘To meet the growing demand for antibacterial implants for bone-implant-associated infection therapy and avoid the adverse effects of secondary surgery,a degradable platform with pH responsiveness and ion-associated antibacterial properties was constructed.A small amount of Sn added to Mg-1Zn alloy reduces the biocorrosion rate,which can be attributed to Sn participation in outer-layer film formation,significantly reducing the biocorrosion rate and hydrogen evolution rate after implantation in vivo.These Mg alloys,which are susceptible to degradation in the acidic bacterial microenvironment,degrade by releasing Mg,Zn and Sn,producing favorably alkaline and antibacterial conditions.Samples with the composition of Mg-1Zn-0.5Sn were found to be beneficial for promoting initial cell adhesion and proliferation,resulting in improved biocompatibility and biosafety.The biocompatibility of this alloy was confirmed by the healthy behavior of animals and the absence of acute or chronic toxicity in the liver,spleen,and kidneys.Our results demonstrate that Mg-1Zn-0.5Sn is safe for biological systems,enabling its efficacious use in biomedical applications. | Weikang Zhao Jingfeng Wang Jiang Weiyang Bo Qiao Yiyang Wang Yuling Li Dianming Jiang | 2020 | Journal of Magnesium and Alloys2020，8，2： | 3 |
| 18 | Development of a novel RNAi therapy:Engineered miR-31 exosomes promoted the healing of diabetic wounds显示文摘Rationale:Chronic wounds associated with diabetes exact a heavy burden on individuals and society and do not have a specific treatment.Exosome therapy is an extension of stem cell therapy,and RNA interference(RNAi)-based therapy is a type of advanced precision therapy.Based on the discovery of chronic wound-related genes in diabetes,we combined exosome therapy and RNAi therapy through an engineering approach for the treatment of diabetic chronic wounds.Methods:We combined exosome therapy and RNAi therapy to establish a precision therapy for diabetes-associated wounds via an engineered exosome approach.Results:First,chronic diabetic wounds express low levels of miR-31-5p compared with nondiabetic wounds,and an miR-31-5p mimic was shown to be effective in promoting the proliferation and migration of three wound-related cell types in vitro.Second,bioinformatics analysis,luciferase reporter assays and western blotting suggested that miR-31-5p promoted angiogenesis,fibrogenesis and reepithelization by inhibiting factor-inhibiting HIF-1(HIF1AN,also named FIH)and epithelial membrane protein-1(EMP-1).Third,engineered miR-31 exosomes were generated as a miR-31-5p RNAi therapeutic agent.In vivo,the engineered miR-31 exosomes promoted diabetic wound healing by enhancing angiogenesis,fibrogenesis and reepithelization.Conclusion:Engineered miR-31 exosomes are an ideal disease pathophysiology-initiated RNAi therapeutic agent for diabetic wounds. | Jinghuan Huang Muyu Yu Wenjing Yin Bo Liang Ang Li Jingfeng Li Xiaolin Li Shichang Zhao Fang Liu | 2021 | Bioactive Materials2021，6，9： | 3 |
| 19 | A CRISPR/Cas12a-empowered surface plasmon resonance platform for rapid and specific diagnosis of the Omicron variant of SARS-CoV-2显示文摘The outbreak of the COVID-19 pandemic was partially due to the challenge of identifying asymptomatic and presymptomatic carriers of the virus,and thus highlights a strong motivation for diagnostics with high sensitivity that can be rapidly deployed.On the other hand,several concerning SARS-CoV-2 variants,including Omicron,are required to be identified as soon as the samples are identified as‘positive’.Unfortunately,a traditional PCR test does not allow their specific identification.Herein,for the first time,we have developed MOPCS(Methodologies of Photonic CRISPR Sensing),which combines an optical sensing technology-surface plasmon resonance(SPR)with the‘gene scissors’clustered regularly interspaced short palindromic repeat(CRISPR)technique to achieve both high sensitivity and specificity when it comes to measurement of viral variants.MOPCS is a low-cost,CRISPR/Cas12a-systemempowered SPR gene-detecting platform that can analyze viral RNA,without the need for amplification,within 38 min from sample input to results output,and achieve a limit of detection of 15 fM.MOPCS achieves a highly sensitive analysis of SARS-CoV-2,and mutations appear in variants B.1.617.2(Delta),B.1.1.529(Omicron)and BA.1(a subtype of Omicron).This platform was also used to analyze some recently collected patient samples from a local outbreak in China,identified by the Centers for Disease Control and Prevention.This innovative CRISPR-empowered SPR platform will further contribute to the fast,sensitive and accurate detection of target nucleic acid sequences with single-base mutations. | Zhi Chen Jingfeng Li Tianzhong Li Taojian Fan Changle Meng Chaozhou Li Jianlong Kang Luxiao Chai Yabin Hao Yuxuan Tang Omar AAl-Hartomy Swelm Wageh Abdullah GAl-Sehemi Zhiguang Luo Jiangtian Yu Yonghong Shao Defa Li Shuai Feng William J.Liu Yaqing He Xiaopeng Ma Zhongjian Xie Han Zhang | 2022 | National Science Review2022，9，8： | 3 |
| 20 | Improving in vitro and in vivo corrosion resistance and biocompatibility of Mg-1Zn-1Sn alloys by microalloying with Sr显示文摘Magnesium(Mg)and its alloys have attracted attention as potential biodegradable materials in orthopedics due to their mechanical and physical properties,which are compatible with those of human bone.However,the effect of the mismatch between the rapid material degradation and fracture healing caused by the adverse effect of hydrogen(H2),which is generated during degradation,on surrounding bone tissue has severely restricted the application of Mg and its alloys.Thus,the development of new Mg alloys to achieve ideal degradation rates,H2 evolution and mechanical properties is necessary.Herein,a novel Mg-1Zn-1Sn-xSr(x=0,0.2,0.4,and 0.6 wt%)quaternary alloy was developed,and the microstructure,mechanical properties,corrosion behavior and biocompatibility in vitro/vivo were investigated.The results demonstrated that a minor amount of strontium(Sr)(0.2 wt%)enhanced the corrosion resistance and mechanical properties of Mg-1Zn-1Sn alloy through grain refinement and second phase strengthening.Simultaneously,due to the high hydrogen overpotential of tin(Sn),the H2 release of the alloys was significantly reduced.Furthermore,Sr-containing Mg-1Zn-1Sn-based alloys significantly enhanced the viability,adhesion and spreading of MC3T3-E1 cells in vitro due to their unique biological activity and the ability to spontaneously form a network structure layer with micro/nanotopography.A low corrosion rate and improved biocompatibility were also maintained in a rat subcutaneous implantation model.However,excessive Sr(>0.2 wt%)led to a microgalvanic reaction and accelerated corrosion and H2 evolution.Considering the corrosion resistance,H2 evolution,mechanical properties and biocompatibility in vitro and in vivo,Mg-1Zn-1Sn-0.2Sr alloy has tremendous potential for clinical applications. | Yafeng Wen Qingshan Liu Jingfeng Wang Qiming Yang Weikang Zhao Bo Qiao Yuling Li Dianming Jiang | 2021 | Bioactive Materials2021，6，12： | 3 |
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