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87篇 您的检索式:作者名="Ban Yang"
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1Dynamic expression of apoptosis-related genes during development of laboratory hepatocellular carcinoma and its relation to apoptosis显示文摘AIM:To explore the expression of p53,bcl-2,bax,survivin and the cell apoptosis during the development of tree shrew hepatocellular carcinoma(HCC),the relationship between expression of these genes,its impact on HCC development,and its relation to cell apoptosis.METHONS:Tree shrew HCC was induced with aflatoxin B1(AFB1),and regular biopsy of liver tissues was carried out and the biopsy tissues were collected during cancer inducement.Liver biopsy tisue and HCC tissue were collected from 35pre-cancerous experimental animats at wk 30 and 60 and at the 30th_,60th_,and 90th-wk,Liver biopsy tissues were collected from 13 blank control animals at wk 30,60,and 90.Expression of p53,bcl-2,bax,and survivin at each stage was examined by immunohistochemistry method.Apoptotic cells were detected in situ by the terminal deoxynucleotidyl transferase-mediated nick end labeling(tunel)technique.RESULTS:The apoptosis rate of normal hepatic cells was extremely low,whereas it increased during the formation of HCC.Expression of the apoptosis-related genes p53,bd-2,bax,and suvivin during the formation of HCC presented an increasing tendency.Expression of p53 did not noticeably relate to that of bcl-2,bax,and survivin,whereas expression of bcl-2 and bax was closely related.In HCC,p53 did not present a distinct relation to cell apoptosis,whereas its high level expression was probably related to liver cell proliferation.Survivin negetively correlated apoptosis index,and its overexpression could inhibit cell apoptosis.CONCLUSION:Apoptosis-related genes p53,bcl-2,bax,and survivin are all related to the occurrence of HCC.The anti-apoptosis effect of bcl-2 is influenced by bax,and ratio bcl/bax reflects more correctly the extent of cell apoptosis.Xiao-Xian Duan Jing-Sheng Ou Yuan Li Jian-Jia Su Chao Ou Chun Yang Hui-Fen Yue Ke-Chen Ban 2005World Journal of Gastroenterology2005,11,30:38
2Expression of IGF-Ⅱ,p53,p21 and HBxAg in precancerous events of hepatocarcinogenesis induced by AFBI and/or HBV in tree shrews显示文摘INTRODUCTIONIn order to study the relationship between oncogeneexpression and HCC generation,we observed theprecancerous hepatic GGT loci,IGF-Ⅱ,p53 andp21 expression during hepatocarcinogenesis of treeshrew induced by hepatitis B virus (HBV) and/oraflatoxin B1 (AFB1).Qin LL Su JJ Li Y Yang C Ban KC Yian RQ 2000World Journal of Gastroenterology2000,6,1:37
3Alteration of p53 and p21 during hepatocarcinogenesis in tree shrews显示文摘AIM: To investigate p53 mutation and p21 expression in hepatocarcinogenesis induced by hepatitis B virus (HBV) and aflatoxin B1 (AFB1) in tree shrews, and to reveal the role of these genes in hepatocarcinogenesis.METHODS: Tree shrews were divided into four groups:group A, those infected with HBV and fed with AFB1 (n = 39);group B, those infected with HBV alone (n = 28); group C,those fed with AFB1 alone (n = 29); and group D, normal controls (n = 20). The tree shrews underwent liver biopsies once every 15 wk. Expression of p53 and p21 proteins and genes in the biopsies and tumor tissues of the experimental tree shrews was detected, respectively, by immunohistochemistry,and by Southem blotting and reverse transcription-polymerase chain reaction and sequencing.RESULTS: The incidence of hepatocellular carcinomas (HCC) was higher in group A (66.7%) than that in group B (3.57%) and C (30%). The time of HCC occurrence was also earlier in group A than that in group C (120.0±16.6 wk vs 153.3±5.8 wk, respectively, P<0.01). p53 protein was not detected by immunohistochemistry in all groups before the 75^th wk of the experiment. At the 105^th wk, the positive rates fo p53 were 78.6%, 60% and 71.4% in groups A, B and C, respectively, which were significantly higher than that in group D (10%) (all P<0.05). An abnormal band of p53 gene was observed in groups A and C. The mutation points of p53gene in tree shrews with HCC were at codons 275, 78 and 13. The nucleotide sequence and amino acid sequence of tree shrew's wild-type p53 showed 91.7% and 93.4% homologies with those of human p53,respectively. The immunopositivity for p21 was found before HCC development. The incidence of HCC was significantly higher in tree shrews that were positive for p21 than those negative for p21 (80.0% vs 11.0%, P<0.001).The incidence of HCC in p21 positive animals in group A was significantly higher than those positive for p21 in group C (PJian-Jia Su Yuan Li Ke-Chen Ban Liu-Liang Qin Chun Yang Chao Ou Xiao-Xian Duan Hui-Yun Wang Rui-Qi Yang Young-Lk Lee 2004World Journal of Gastroenterology2004,10,24:21
4KCNE3 R53H substitution in familial atrial fibrillation显示文摘ZHANG Dai-fu LIANG Bo LIN Jie LIU Ban ZHOU Qin-shu YANG Yi-qing 2005Chinese Medical Journal2005,,20:18
5Effect of Dark Septate Endophytic Fungus Gaeumannomyces cylindrosporus on Plant Growth, Photosynthesis and Pb Tolerance of Maize (Zea mays L.)显示文摘Dark septate endophytic(DSE) fungi are ubiquitous and cosmopolitan, and occur widely in association with plants in heavy metal stress environment. However, little is known about the effect of inoculation with DSE fungi on the host plant under heavy metal stress.In this study, Gaeumannomyces cylindrosporus, which was isolated from Pb-Zn mine tailings in China and had been proven to have high Pb tolerance, was inoculated onto the roots of maize(Zea mays L.) seedlings to study the effect of DSE on plant growth, photosynthesis,and the translocation and accumulation of Pb in plant under stress of different Pb concentrations. The growth indicators(height, basal diameter, root length, and biomass) of maize were detected. Chlorophyll content, photosynthetic characteristics(net photosynthetic rate, transpiration rate, stomatal conductance, and intercellular CO_2 concentration), and chlorophyll fluorescence parameters in leaves of the inoculated and non-inoculated maize were also determined. Inoculation with G. cylindrosporus significantly increased height,basal diameter, root length, and biomass of maize seedlings under Pb stress. Colonization of G. cylindrosporus improved the efficiency of photosynthesis and altered the translocation and accumulation of Pb in the plants. Although inoculation with G. cylindrosporus increased Pb accumulation in host plants in comparison to non-inoculated plants, the translocation factor of Pb in plant body was significantly decreased. The results indicated that Pb was accumulated mainly in the root system of maize and the phytotoxicity of Pb to the aerial part of the plant was alleviated. The improvement of efficiency of photosynthesis and the decrease of translocation factor of Pb, caused by DSE fungal colonization, were efficient strategies to improve Pb tolerance of host plants.BAN Yihui XU Zhouying YANG Yurong ZHANG Haihan CHEN Hui TANG Ming 2017Pedosphere2017,27,2:16
6Chinese physicians' perceptions of fecal microbiota transplantation显示文摘AIM: To explore Chinese physicians' perceptions towards fecal microbiota transplantation(FMT) and to provide information and an assessment of FMT development in China.METHODS: A self-administered questionnaire was developed according to the FMT practice guidelines and was distributed to physicians in hospitals via Internet Research Electronic Data Capture(REDcap) software and electronic mails to assess their attitudes toward and knowledge of FMT. The questionnaire included a brief introduction of FMT that was followed by 20 questions. The participants were required to respond voluntarily, under the condition of anonymity and without compensation. Except for the fill-in-the-blank questions, all of the other questions were required in the REDcap data collection systems, and the emailed questionnaires were completed based on eligibility.RESULTS: Up to December 9, 2014, 844 eligible questionnaires were received out of the 980 distributed questionnaires, with a response rate of 86.1%. Among the participants, 87.3% were from tertiary hospitals, and there were 647(76.7%) gastroenterologists and 197(23.3%) physicians in other departments(nongastroenterologists). Gastroenterologists' awareness of FMT prior to the survey was much higher than non-gastroenterologists'(54.3 vs 16.5%, P < 0.001); however, acceptance of FMT was not statistically different(92.4 vs 87.1%, P = 0.1603). Major concerns of FMT included the following: acceptability to patients(79.2%), absence of guidelines(56.9%), and administration and ethics(46.5%). On the basis of understanding, the FMT indications preferred byphysicians were recurrent Clostridium difficile infection(86.7%), inflammatory bowel disease combined with Clostridium difficile infection(78.6%), refractory ulcerative colitis(70.9%), ulcerative colitis(65.4%), Crohn's disease(59.4%), chronic constipation(43.7%), irritable bowel syndrome(39.1%), obesity(28.1%) and type 2 diabetes(23.9%). For donor selection, the majority of physicians preferred individuals with a similar gut flora environment to the recipients. 76.6% of physicians chose lower gastrointestinal tract as the administration approach. 69.2% of physicians considered FMT a safe treatment. CONCLUSION: Chinese physicians have awareness and a high acceptance of FMT, especially gastroenterologists, which provides the grounds and conditions for the development of this novel treatment in China. Physicians' greatest concerns were patient acceptability and absence of guidelines.Rong-Rong Ren Gang Sun Yun-Sheng Yang Li-Hua Peng Shu-Fang Wang Xiao-Hong Shi Jing-Quan Zhao Yong-Ling Ban Fei Pan Xue-Hong Wang Wei Lu Jian-Lin Ren Ying Song Jiang-Bin Wang Qi-Ming Lu Wen-Yuan Bai Xiao-Ping Wu Zi-Kai Wang Xiao-Mei Zhang Ye Chen 2016World Journal of Gastroenterology2016,22,19:12
7Genome-wide DNA methylation profiles in Tibetan and Yorkshire pigs under highaltitude hypoxia显示文摘Background: Tibetan pigs, which inhabit the Tibetan Plateau, exhibit distinct phenotypic and physiological characteristics from those of lowland pigs and have adapted well to the extreme conditions at high altitude.However, the genetic and epigenetic mechanisms of hypoxic adaptation in animals remain unclear.Methods: Whole-genome DNA methylation data were generated for heart tissues of Tibetan pigs grown in the highland(TH, n = 4) and lowland(TL, n = 4), as well as Yorkshire pigs grown in the highland(YH, n = 4) and lowland(YL, n = 4), using methylated DNA immunoprecipitation sequencing.Results: We obtained 480 million reads and detected 280679, 287224, 259066, and 332078 methylation enrichment peaks in TH, YH, TL, and YL, respectively. Pairwise TH vs. YH, TL vs. YL, TH vs. TL, and YH vs. YL comparisons revealed6829, 11997, 2828, and 1286 differentially methylated regions(DMRs), respectively. These DMRs contained 384, 619,192, and 92 differentially methylated genes(DMGs), respectively. DMGs that were enriched in the hypoxia-inducible factor 1 signaling pathway and pathways involved in cancer and hypoxia-related processes were considered to be important candidate genes for high-altitude adaptation in Tibetan pigs.Conclusions: This study elucidates the molecular and epigenetic mechanisms involved in hypoxic adaptation in pigs and may help further understand human hypoxia-related diseases.Bo Zhang Dongmei Ban Xiao Gou Yawen Zhang Lin Yang Yangzom Chamba Hao Zhang 2019Journal of Animal Science and Biotechnology2019,10,2:6
8Face Masks in the New COVID-19 Normal: Materials, Testing,and Perspectives显示文摘The increasing prevalence of infectious diseases in recent decades has posed a serious threat to public health.Routes of transmission differ,but the respiratory droplet or airborne route has the greatest potential to disrupt social intercourse,while being amenable to prevention by the humble facemask.Different types of masks give different levels of protection to the user.The ongoing COVID-19 pandemic has even resulted in a global shortage of face masks and the raw materials that go into them,driving individuals to self-produce masks from household items.At the same time,research has been accelerated towards improving the quality and performance of face masks,e.g.,by introducing properties such as antimicrobial activity and superhydrophobicity.This review will cover mask-wearing from the public health perspective,the technical details of commercial and home-made masks,and recent advances in mask engineering,disinfection,and materials and discuss the sustainability of mask-wearing and mask production into the future.Ming Hui Chua Weiren Cheng Shermin Simin Goh Junhua Kong Bing Li Jason Y.CLim Lu Mao Suxi Wang Kun Xue Le Yang Enyi Ye Kangyi Zhang Wun Chet Davy Cheong Beng Hoon Tan Zibiao Li Ban Hock Tan Xian Jun Loh 2020Research2020,,1:5
9Power management unit chip design for automobile active-matrix organic light-emitting diode display module显示文摘A power management unit (PMU) chip supplying dual panel supply voltage, which has a low electro-magnetic interference (EMI) characteristic and is favorable for miniaturization, is designed. A two-phase charge pump circuit using external pumping capacitor increases its pumping current and works out the charge-loss problem by using bulk-potential biasing circuit. A low-power start-up circuit is also proposed to reduce the power consumption of the band-gap reference voltage generator. And the ring oscillator used in the ELVSS power circuit is designed with logic devices by supplying the logic power supply to reduce the layout area. The PMU chip is designed with MagnaChip’s 0.25 μm high-voltage process. The driving currents of ELVDD and ELVSS are more than 50 mA when a SPICE simulation is done.KIM J H PARK J H KIM J H CAO T V LEE T Y BAN H J YANG K KIM H G HA P B KIM Y H 2009Journal of Central South University2009,16,4:4
10Multifunctional biomimetic spinal cord: New approach to repair spinal cord injuries显示文摘The incidence of spinal cord injury(SCI) has been gradually increasing, and the treatment has troubled the medical field all the time. Primary and secondary injuries ultimately lead to nerve impulse conduction block. Microglia and astrocytes excessively accumulate and proliferate to form the glial scar. At present, to reduce the effect of glial scar on nerve regeneration is a hot spot in the research on the treatment of SCI. According to the preliminary experiments, we would like to provide a new bionic spinal cord to reduce the negative effect of glial scar on nerve regeneration. In this hypothesis we designed a new scaffold that combine the common advantage of acellular scaffold of spinal cord and thermosensitive gel, which could continue to release exogenous basic fibroblast growth factor(BFGF) in the spinal lesion area on the basis of BFGF modified thermosensitive gel. Meanwhile, the porosity, pore size and material of the gray matter and white matter regions were distinguished by an isolation layer, so as to induce the directed differentiation of cells into the defect site and promote regeneration of spinal cord tissue.Yang Liu Qian Li Bin Zhang De-Xiang Ban Shi-Qing Feng 2017World Journal of Experimental Medicine2017,7,3:3
11First total synthesis of a naturally occurring nucleoside disulfide:9-(5'-Deoxy-5'-thio-β-D-xylofuranosyl)adenine disulfide显示文摘A naturally occurring nucleoside disulfide,9-(5'-deoxy-5'-thio-β-D-xylofuranosyl)adenine disulfide,was first synthesized from D-xylose over 7 steps in 20%overall yield.The key step involved Vorbriiggen glycosylation of silylated N^6-benzoyladenine with xylose diacetate moiety.Hai Xin Ding Ling Cui Da Ru Chun Yang Ban Peng Cao Qi Sun Qiang Xiao 2012Chinese Chemical Letters2012,23,9:2
12Metal-Organic Framework Membranes and Membrane Reactors:Versatile Separations and Intensified Processes显示文摘Metal-organic frameworks are an emerging and fascinating category of porous solids that can be self-assembled with metal-based cations linked by organic molecules.The unique features of MOFs in porosity(or surface areas),together with their diversity for chemical components and architectures,make MOFs attractive candidates in many applications.MOF membranes represent a long-term endeavor to convert MOF crystals in the lab to potentially industry-available commodities,which,as a promising alternative to distillation,provide a bright future for energy-efficient separation technologies closely related with chemicals,the environment,and energy.The membrane reactor shows a typical intensified process strategy by combining the catalytic reaction with the membrane separation in one unit.This review highlights the recent process of MOF-based membranes and the importance of MOF-based membrane reactors in relative intensified chemical processes.Yujie Ban Na Cao Weishen Yang 2020Research2020,,1:2
13Pyridinium tribromide catalyzed condensation of indoles and aldehydes to form bisindolylalkanes显示文摘链烷衍生物被开发了的为二度(indol-3-yl ) 的一个有效合成方法。面对 pyridinium tribromide (PTB ) 的 5 mol% ,吲哚和醛的冷凝作用在温和条件下面顺利继续了,产生相应二度(indol-3-yl ) 链烷在对优秀收益好。Qin Yang Zheng Lan Yin Ban Lai Ouyang YiYuan Peng 2011Chinese Chemical Letters2011,22,5:2
14Description of a new species of the genus Uropsilus(Eulipotyphla:Talpidae:Uropsilinae)from the Dabie Mountains,Anhui,Eastern China显示文摘During a terrestrial vertebrate survey of the Dabie Mountains in Anhui Province,eastern China,we collected four Asian shrew mole specimens(hereafter,shrew moles).Based on published literature and comparison with previously collected materials,the four specimens were similar to shrew moles from the mountains of Southwest China;however,no species in this group has been previously recorded from the Dabie Mountains.The genetic and morphological characteristics of the specimens were analyzed,based upon which a new species of shrew mole is described,named Uropsilus dabieshanensis sp.nov.Ting-Li Hu Zhen Xu Heng Zhang Ying-Xun Liu Rui Liao Guang-Dao Yang Ruo-Lei Sun Jie Shi Qian Ban Chun-Lin Li Shao-Ying Liu Bao-Wei Zhang 2021Zoological Research2021,42,3:2
15Ultralight aerogel sphere composed of nanocellulose-derived carbon nanofiber and graphene for excellent electromagnetic wave absorption显示文摘A novel type of three-dimensional ultralight aerogel sphere,consisting of one-dimensional nanocellulose-derived carbon fibers and two-dimensional graphene layers,was prepared based on a developed drop-freeze-drying followed by carbonization approach.The nanofibrous carbon efficiently prevents the agglomeration of the graphene layers,which,in turn,reduces the shrinkage and maintains the structural stability of the hybrid carbon aerogel spheres.Consequently,the aerogel spheres showing an ultralow-density of 2.8 mg/cm^(3) and a porosity of 99.98%accomplish the tunable dielectric property and electromagnetic wave(EMW)absorption performance.The high-efficiency utilization of biomass-derived fibrous nanocarbon,graphene,the porous structure of the hybrid aerogel spheres leads to the excellent EMW absorption performance.The aerogel spheres display an effective absorption bandwidth of 6.16 GHz and a minimum reflection loss of−70.44 dB even at a filler loading of merely 3 wt.%,significantly outperforming that of other biomass-derived carbon-based EMW absorbing materials.This work offers a feasible,facile,scalable approach for fabricating high-performance and sustainable biomass-based aerogels,suggesting a tremendous application potential in EMW absorption and aerospace.Runa Zhang Bin Li Yunfei Yang Na Wu Zhuyin Sui Qingfu Ban Lili Wu Wei Liu Jiurong Liu Zhihui Zeng 2023Nano Research2023,16,5:2
16Isotype Heterojunction‑Boosted CO_(2) Photoreduction to CO显示文摘Photocatalytic conversion of CO_(2) to high-value products plays a crucial role in the global pursuit of carbon–neutral economy.Junction photocatalysts,such as the isotype heterojunctions,offer an ideal paradigm to navigate the photocatalytic CO_(2) reduction reaction(CRR).Herein,we elucidate the behaviors of isotype heterojunctions toward photocatalytic CRR over a representative photocatalyst,g-C_(3)N_(4).Impressively,the isotype heterojunctions possess a significantly higher efficiency for the spatial separation and transfer of photogenerated carriers than the single components.Along with the intrinsically outstanding stability,the isotype heterojunctions exhibit an exceptional and stable activity toward the CO_(2) photoreduction to CO.More importantly,by combining quantitative in situ technique with the first-principles modeling,we elucidate that the enhanced photoinduced charge dynamics promotes the production of key intermediates and thus the whole reaction kinetics.Chaogang Ban Youyu Duan Yang Wang Jiangping Ma Kaiwen Wang Jiazhi Meng Xue Liu Cong Wang Xiaodong Han Guozhong Cao Liyong Gan Xiaoyuan Zhou 2022Nano-Micro Letters2022,14,5:2
17Metal-organic framework-based CO2 capture: from precise material design to high-efficiency membranes显示文摘A low-carbon economy calls for CO capture technologies.Membrane separations represent an energy-efficient and environment-friendly process compared with distillations and solvent absorptions.Metal-organic frameworks(MOFs),as a novel type of porous materials,are being generated at a rapid and growing pace,which provide more opportunities for high-efficiency CO capture.In this review,we illustrate a conceptional framework from material design and membrane separation application for CO capture,and emphasize two importance themes,namely(i)design and modification of CO-philic MOF materials that targets secondary building units,pore structure,topology and hybridization and(ii)construction of crack-free membranes through chemical epitaxy growth of active building blocks,interfacial assembly,ultrathin two-dimensional nanosheet assembly and mixed-matrix integration strategies,which would give rise to the most promising membrane performances for CO capture,and be expected to overcome the bottleneck of permeability-selectivity limitations.Yujie Ban Meng Zhao Weishen Yang 2020Frontiers of Chemical Science and Engineering2020,14,2:2
18DNA mismatch repair: from structure to mechanism 显示文摘YANG W JUNOP M S BAN C 2000Cold Spring Harb Symp Quant Biol2000,65,:1
19Therapeutic potential of traditional Chinese medicine for vascular endothelial growth factor显示文摘Vascular endothelial growth factor(VEGF)is the main regulator of physiological angiogenesis during embryonic development,bone growth,and reproductive function,and it also participates in a series of pathological changes.Traditional Chinese medicine(TCM),with a history of more than 2000 years,has been widely used in clinical practice,while the exploration of its mechanisms has only begun.This review summarizes the research of recent years on the influence of TCM on VEGF.It is found that many Chinese medicines and recipes have a regulatory effect on VEGF,indicating that Chinese medicine has broad prospects as a complementary and alternative therapy,providing new treatment ideas for clinical applications and the theoretical basis for research on the mechanisms of TCM.Yijia MAO Lingkai MENG Huayi LIU Yuting LU Kuo YANG Guangze OUYANG Yanran BAN Shuang CHEN 2022Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2022,23,5:1
20General characteristics of temperature variation in China during the last two millennia显示文摘Ban Yang Achim Braeuning Kathleen R Johnson 2002Geophysical Research Letters2002,29,9:1
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