维普中文期刊产品整合服务
75篇 您的检索式:作者名="Tiejun Liu"
    题名 作者 年代 出处 被引量
1Current status of diagnosis and treatment of bladder cancer in China-Analyses of Chinese Bladder Cancer Consortium database显示文摘Objective:To investigate current status of diagnosis and treatment of bladder cancer in China.Methods:A database was generated by Chinese Bladder Cancer Consortium(CBCC).From January 2007 to December 2012,14,260 cases from 44 CBCC centers were included.Data of diagnosis,treatment and pathology were collected.Results:The average age was 63.5 year-old and most patients were male(84.3%).The most common histologic types were urothelial carcinoma(91.4%),adenocarcinoma(1.8%),and squamous carcinoma(1.9%).According to 1973 and 2004 WHO grading system,42.0%,41.0%,and 17.0% of patients were grade 1,2,and 3,and 16.0%,48.7%,and 35.3% of patients were papillary urothelial neoplasms of low malignant potential,low,and high grade,respectively.Non-muscle invasive bladder cancer(NMIBC)and muscle invasive bladder cancer(MIBC)were 25.2% and 74.1%,respectively(0.8% not clear).Carcinoma in situ was only 2.4%.Most patients were diagnosed by white-light cystoscopy with biopsy(74.3%).Fluorescence and narrow band imaging cystoscopy had additional detection rate of 1.0% and 4.0%,respectively.Diagnostic transurethral resection(TUR)provided detection rate of 16.9%.Most NMIBCs were treated with TUR(89.2%).After initial TUR,2.6%accepted second TUR,and 45.7%,69.9%,and 58.7% accepted immediate,induced,and maintenance chemotherapy instillation,respectively.Most MIBCs were treated with radical cystectomy(RC,59.7%).Laparoscopic RCs were 35.1%,while open RC 63.4%.Extended and standard pelvic lymph node dissection were 7% and 66%,respectively.Three most common urinary diversions were orthotopic neobladder(44%),ileal conduit(31%),and ureterocutaneostomy(23%).Only 2.3% of patients accepted neo-adjuvant chemotherapy and only 18%of T3 and T4 patients accepted adjuvant chemotherapy.Conclusion:Disease characteristics are similar to international reports,while differences of diagnosis and treatment exist.This study can provide evidences for revisions of the guideline on bladder cancer in China.Kaiwen Li Tianxin Lin Wei Xue Xin Mu Enci Xu Xu Yang Fubao Chen Guangyong Li Lulin Ma Guoliang Wang Chaozhao Liang Haoqiang Shi Ming Li Mao Tang Xueyi Xue Yisong Lv Yaoliang Deng Chengyang Li Zhiwen Chen Xiaozhou Zhou Fengshuo Jin Xudong Liu Jinxin Wei Lei Shi Xin Gou Weiyang He Liqun Zhou Lin Cai Baiye Jin Guanghou Fu Xiangbo Kong Hongyan Sun Ye Tian Lang Feng Tiejun Pan Yiyi Wu Dongwen Wang Hailong Hao Benkang Shi Yaofeng Zhu Qiang Wei Ping Han Changli Wu Dawei Tian Zhangqun Ye Zheng Liu Zhiping Wang Junqiang Tian Lin Qi Minfeng Chen Wei Li Jinchun Qi Gongxian Wang Longlong Fu Zhaolin Sun Guangheng Luo Zhoujun Shen Zhaowei Zhu Jinchun Xing Zhun Wu Dong Wei Xin Chen Yanqun Na Hongfeng Guo Chunxi Wang Zhihua Lu Chuize Kong Yang Liu Jin Yang Jianyun Hu Xin Gao Jielin Li Changjun Yin Pu Li Shan Chen Zhen Du Jiongming Li Yongji Yan Xu Zhang Shuang Huang Fangjian Zhou Zhiling Zhang Yinghao Sun Shuxiong Zeng Song Cen Jiaquan Zhou Hanzhong Li Jin Wen Jian Huang 2015Asian Journal of Urology2015,2,2:21
2Effects of dietary protein restriction on muscle fiber characteristics and m TORC1 pathway in the skeletal muscle of growing-finishing pigs显示文摘Background: To investigate the effects of dietary crude protein(CP) restriction on muscle fiber characteristics and key regulators related to protein deposition in skeletal muscle, a total of 18 growing-finishing pigs(62.30 ± 0.88 kg)were allotted to 3 groups and fed with the recommended adequate protein(AP, 16 % CP) diet, moderately restricted protein(MP, 13 % CP) diet and low protein(LP, 10 % CP) diet, respectively. The skeletal muscle of different locations in pigs, including longissimus dorsi muscle(LDM), psoas major muscle(PMM) and biceps femoris muscle(BFM) were collected and analyzed.Results: Results showed that growing-finishing pigs fed the MP or AP diet improved(P < 0.01) the average daily gain and feed: gain ratio compared with those fed the LP diet, and the MP diet tended to increase(P = 0.09) the weight of LDM. Moreover, the ATP content and energy charge value were varied among muscle samples from different locations of pigs fed the reduced protein diets. We also observed that pigs fed the MP diet up-regulated(P < 0.05) muscular m RNA expression of all the selected key genes, except that myosin heavy chain(My HC) IIb,My HC IIx, while m RNA expression of ubiquitin ligases genes was not affected by dietary CP level. Additionally, the activation of mammalian target of rapamycin complex 1(m TORC1) pathway was stimulated(P < 0.05) in skeletal muscle of the pigs fed the MP or AP diet compared with those fed the LP diet.Conclusion: The results suggest that the pigs fed the MP diet could catch up to the growth performance and the LDM weight of the pigs fed the AP diet, and the underlying mechanism may be partly due to the alteration in energy status, modulation of muscle fiber characteristics and m TORC1 activation as well as its downstream effectors in skeletal muscle of different locations in growing-finishing pigs.Yinghui Li Fengna Li Li Wu Hongkui Wei Yingying Liu Tiejun Li Bie Tan Xiangfeng Kong Kang Yao Shuai Chen Fei Wu Yehui Duan Yulong Yin 2017Journal of Animal Science and Biotechnology2017,8,1:13
3Aflatoxin B1, zearalenone and deoxynivalenol in feed ingredients and complete feed from different Province in China显示文摘Background: The current study was carried out to provide a reference for monitory of aflatoxin B_1(AFB_1),zearalenone(ZEN) and deoxynivalenol(DON) contamination in feed ingredients and complete feeds were collected from different Province in China from 2013 to 2015.Methods: A total of 443 feed ingredients, including 220 corn, 24 wheat, 24 domestic distillers dried grains with soluble(DDGS), 55 bran, 20 wheat shorts and red dog, 37 imported DDGS, 34 corn germ meal and 29 soybean meal as well as 127 complete feeds including 25 pig complete feed(powder), 90 pig complete feed(pellet), six duck complete feed and six cattle complete feed were randomly collected from different Province in China,respectively, by high-performance chromatography in combined with UV or fluorescence analysis.Results: The incidence rates of AFB_1, ZEN and DON contamination of feed ingredients and complete feeds were80.8, 92.3 and 93.9 %, respectively. The percentage of positive samples for DON ranged from 66.7 to 100 %.Domestic DDGS and imported DDGS presented the most serious contamination AFB_1, ZEN and DON contamination levels of feeds ranged from 61.5 to 100 %, indicated that serious contamination over the studied 3-year period.Conclusion: The current data provide clear evidence that AFB_1, ZEN and DON contamination of feed ingredients and complete feeds in different Province in China is serious and differs over past 3-year. The use of corn, domestic DDGS, imported DDGS and corn germ meal, which may be contaminated with these three mycotoxins, as animal feed may triggered a health risk for animal. Feeds are most contaminated with DON followed by ZEN and AFB_1.Mycotoxins contamination in feed ingredients and complete feeds should be monitored routinely in China.Li Wu Jianjun Li Yunhu Li Tiejun Li Qinghua He Yulong Tang Hongnan Liu Yongteng Su Yulong Yin Peng Liao 2017Journal of Animal Science and Biotechnology2017,8,2:13
4Prostate cancer in Asia:A collaborative report显示文摘The incidence of prostate cancer(PCa)within Asian population used to be much lower than in the Western population;however,in recent years the incidence and mortality rate of PCa in some Asian countries have grown rapidly.This collaborative report summarized the latest epidemiology information,risk factors,and racial differences in PCa diagnosis,current status and new trends in surgery management and novel agents for castration-resistant prostate cancer.We believe such information would be helpful in clinical decision making for urologists and oncologists,health-care ministries and medical researchers.Rui Chen Shancheng Ren Ming Kwong Yiu Ng Chi Fai Wai Sam Cheng Lap Hong Ian Seiji Naito Tadashi Matsuda Elijah Kehinde Ali Kural Jason Yichun Chiu Rainy Umbas Qiang Wei Xiaolei Shi Liqun Zhou Jian Huang Yiran Huang Liping Xie Lulin Ma Changjun Yin Danfeng Xu Kexin Xu Zhangqun Ye Chunxiao Liu Dingwei Ye Xin Gao Qiang Fu Jianquan Hou Jianlin Yuan Dalin He Tiejun Pan Qiang Ding Fengshuo Jin Benkang Shi Gongxian Wang Xiuheng Liu Dongwen Wang Zhoujun Shen Xiangbo Kong Wanhai Xu Yaoliang Deng Haibo Xia Alexa NCohen Xu Gao Chuanliang Xu Yinghao Sun 2014Asian Journal of Urology2014,1,1:13
5Efficient production of ethyl levulinate from cassava over Al2(SO4)3 catalyst in ethanol–water system显示文摘One-pot achievement of ethyl levulinate from cassava was conducted in ethanol-water system over several simple sulfate salt catalysts.Al_2(SO_4)_3 catalyst had the best performance in synthesizing ethyl levulinate comparing with those of a series of sulfate salts.The highest yields of ethyl levulinate was up to39.27%as well as 7.78%levulinate acid when cassava was catalyzed in ethanol medium by adding 10 wt%water.^(13)C and ~1H NMR spectroscopic investigations confirmed that isomerization of glucose to fructose over Al_2(SO_4)_3 catalyst is an important step in producing ethyl levulinate and levulinate acid.Due to aggregations of Al^(3+) under hydrothermal conditions,tiny amount of Al^(3+) were detected in filtrate at the percentage of 0.32%even if in absolute water.Bronsted and Lewis acids could improve the yield of ethyl levulinate and levulinate acid by synergistic effect.All results suggested that A1_2(SO_4)_3 was a simple and efficient catalyst for ethyl levulinate and levulinate acid production.Jin Tan Qiying Liu Lungang Chen Tiejun Wang Longlong Ma Guanyi Chen 2017Journal of Energy Chemistry2017,26,1:11
6Apatite Fission Track Evidence of Uplift Cooling in the Qiangtang Basin and Constraints on the Tibetan Plateau Uplift显示文摘The Qiangtang basin is located in the central Tibetan Plateau. This basin has an important structural position,and further study of its tectonic and thermal histories has great significance for understanding the evolution of the Tibetan Plateau and the hydrocarbon potential of marine carbonates in the basin. This study focuses on low temperature thermochronology and in particular conducted apatite fission track analysis. Under constraints provided by the geological background,the thermal history in different tectonic units is characterized by the degree of annealing of samples,and the timing of major(uplift-erosion related) cooling episodes is inferred. The cooling history in the Qiangtang basin can be divided into two distinct episodes. The first stage is mainly from the late Early Cretaceous to the Late Cretaceous(69.8 Ma to 108.7 Ma),while the second is mainly from the MiddleLate Eocene to the late Miocene(10.3 Ma to 44.4 Ma). The first cooling episode records the uplift of strata in the central Qiangtang basin caused by continued convergent extrusion after the BangongNujiang ocean closed. The second episode can be further divided into three periods,which are respectively 10.3 Ma,22.6–26.1 Ma and 30.8–44.4 Ma. The late Oligocene-early Miocene(22.6–26.1 Ma) is the main cooling period. The distribution and times of the earlier uplift-related cooling show that the effect of extrusion after the collision between Eurasian plate and India plate obviously influenced the Qiangtang basin at 44.4 Ma. The Qiangtang basin underwent compression and started to be uplifted from the middle-late Eocene to the early Oligocene(45.0–30.8 Ma). Subsequently,a large-scale and intensive uplift process occurred during the late Oligocene to early Miocene(26.1–22.6 Ma) and the basin continued to undergo compression and uplift up to the late Miocene(10.3 Ma). Thus,uplift-erosion in the Qiangtang basin was intensive from 44.5 Ma to about 10 Ma. The timing of cooling in the second episode shows that the uplift of the Qiangtang basin was caused by the strong compression after the collision of the Indian plate and Eurasian plate. On the whole,the new apatite fission-track data from the Qiangtang basin show that the Tibetan Plateau started to extrude and uplift during 45–30.8 Ma. The main period of uplift and formation of the Tibetan Plateau took place about 22.6–26.1 Ma,and uplift and extrusion continued until the late Miocene(10.3 Ma).REN Zhanli CUI Junping LIU Chiyang LI Tiejun CHEN Gang DOU Shuang TIAN Tao LUO Yating 2015Acta Geologica Sinica(English Edition)2015,89,2:11
7Numerical Simulation of Typhoon Muifa(2011) Using a Coupled Ocean-Atmosphere-Wave-Sediment Transport(COAWST) Modeling System显示文摘The newly developed Coupled Ocean-Atmosphere-Wave-Sediment Transport(COAWST) Modeling System is applied to investigate typhoon-ocean interactions in this study. The COAWST modeling system represents the state-of-the-art numerical simulation technique comprising several coupled models to study coastal and environmental processes. The modeling system is applied to simulate Typhoon Muifa(2011), which strengthened from a tropical storm to a super typhoon in the Northwestern Pacific, to explore the heat fluxes exchanged among the processes simulated using the atmosphere model WRF, ocean model ROMS and wave model SWAN. These three models adopted the same horizontal grid. Three numerical experiments with different coupling configurations are performed in order to investigate the impact of typhoon-ocean interaction on the intensity and ocean response to typhoon. The simulated typhoon tracks and intensities agree with observations. Comparisons of the simulated variables with available atmospheric and oceanic observations show the good performance of using the coupled modeling system for simulating the ocean and atmosphere processes during a typhoon event. The fully coupled simulation that includes a ocean model identifies a decreased SST as a result of the typhoon-forced entrainment. Typhoon intensity and wind speed are reduced due to the decrease of the sea surface temperature when using a coupled ocean model. The experiments with ocean coupled to atmosphere also results in decreased sea surface heat flux and air temperature. The heat flux decreases by about 29% compared to the WRF only case. The reduction of the energy induced by SST decreases, resulting in weakening of the typhoon. Coupling of the waves to the atmosphere and ocean model induces a slight increase of SST in the typhoon center area with the ocean-atmosphere interaction increased as a result of wave feedback to atmosphere.LIU Na LING Tiejun WANG Hui ZHANG Yunfei GAO Zhiyi WANG Yi 2015Journal of Ocean University of China2015,14,2:10
8Improvement of oxytetracycline production mediated via cooperation of resistance genes in Streptomyces rimosus显示文摘Increasing the self-resistance levels of Streptomyces is an effective strategy to improve the production of antibiotics.To increase the oxytetracycline(OTC) production in Streptomyces rimosus,we investigated the cooperative effect of three co-overexpressing OTC resistance genes:one gene encodes a ribosomal protection protein(otrA) and the other two express efflux proteins(otrB and otrC).Results indicated that combinational overexpression of otrA,otrB,and otrC(MKABC) exerted a synergetic effect.OTC production increased by 179%in the recombinant strain compared with that of the wild-type strain M4018.The resistance level to OTC was increased by approximately two-fold relative to the parental strain,thereby indicating that applying the cooperative effect of self-resistance genes is useful to improve OTC production.Furthermore,the previously identified cluster-situated activator OtcR was overexpressed in MKABC in constructing the recombinant strain MKRABC;such strain can produce OTC of approximately7.49 g L^((-1)),which represents an increase of 19%in comparison with that of the OtcR-overexpressing strain alone.Our work showed that the cooperative overexpression of self-resistance genes is a promising strategy to enhance the antibiotics production in Streptomyces.Shouliang Yin Xuefeng Wang Mingxin Shi Fang Yuan Huizhuan Wang Xiaole Jia Fang Yuan Jinliang Sun Tiejun Liu Keqian Yang Yuxiu Zhang Keqiang Fan Zilong Li 2017Science China(Life Sciences)2017,60,9:10
9Analytical research on structural-acoustic coupling of a cavity surrounded by flexible panel显示文摘结构声学的联合特征,机制, structuralacoustic 在自然模式上联合的效果和系统的自然频率理论上并且数字地被分析。为联合系统的自然频率的公式被导出。一些新结论被获得。而微弱地联合的系统显示明显的前馈控制特征,和它因为自然特征和自然频率被改变的反馈环的存在,分析结果证明强烈联合的系统显示明显的靠近环的反馈特征。在为常规洞和面板系统的结构、声学的模式之间的簇联合特征被发现,它决定在灵活面板和洞之间的联合相互作用。在一模式簇的任何模式仅仅介入在一样的模式和形式的自然频率独立地聚类。联合的形式的簇改变系统而且形式的顺序和结构的模式形状的自然频率不仅。JIN Guoyong YANG Tiejun LIU Zhigang JI Zhenlin LIWanyou 2007Chinese Journal of Acoustics2007,26,2:6
10Prevalence of Kaposi's sarcoma-associated herpesvirus in Uygur and Han populations from the Urumqi and Kashgar regions of Xinjiang, China显示文摘Kaposi's sarcoma-associated herpesvirus(KSHV) is the infectious etiologic agent associated with Kaposi's sarcoma(KS), primary effusion lymphoma, and multicentric Castleman disease. It has been shown that high KSHV prevalence and high incidence of both classic KS and AIDSassociated KS are found mostly among people of Uygur ethnicity in Xinjiang, while people of Han ethnicity in Xinjiang have a higher KSHV seroprevalence than those of other Han populations in China's Mainland. However, it is still unclear why there is such geographical and population variation in KSHV distribution in China. In this work, we focused on the populations in the Kashgar region and Urumqi area, where a total of 1294 research subjects were randomly selected to investigate the potential correlation between KSHV prevalence and different ethnicities in endemic areas of Xinjiang, and to determine risk factors that may affect KSHV infection rates or KS incidence. We identified a high seroprevalence of KSHV and high peripheral blood DNA infection in the general Uygur and Han populations in both Urumqi and Kashgar regions of Xinjiang, and determined that advancing age, low education level, and stationary population status affect KSHV infection rates. Further, KSHV-positive Uygur participants were shown to have higher prevalence of neutralizing antibodies and neutralizing antibody titers than KSHV-positive Han participants.Jun Zheng Yang Yang Meng Cui Zhan-Jun Shu Li-Li Han Zhen-Qiu Liu Charles Wood Tiejun Zhang Yan Zeng 2017Virologica Sinica2017,32,5:5
11PROPAGATION OF SURFACE ACOUSTIC WAVES IN PRESTRESSED ANISOTROPIC LAYERED PIEZOELECTRIC STRUCTURES显示文摘The propagation of surface acoustic waves in layered piezoelectric structures withinitial stresses is investigated.The phase velocity equations are obtained for electrically free andshorted cases,respectively.Effects of the initial stresses on the phase velocity and the electrome-chanical coupling coefficient for the fundamental mode of the layered piezoelectric structures arediscussed.Numerical results for the c-axis oriented fihn of LiNbO3 on a sapphire substrate aregiven.It is found that the fractional change in phase velocity is a linear function with the ini-tial stresses,and the electromechanical coupling factor increases with an increase of the absolutevalues of the compressive initial stresses.The results are useful for the design of surface acousticwave devices.Liu Hua Kuang Zhenbang Cai Zhengming Wang Tiejun Wang Zikun 2003Acta Mechanica Solida Sinica2003,16,1:5
12Anisotropic thermoelectric properties of layered compound SnSe2显示文摘Similar to high performance SnSe thermoelectrics, SnSe2 is also a layered structured semiconductor.However, its anisotropic thermoelectric properties are less experimentally investigated. In this work,Cl-doped SnSe2 bulk materials are successfully prepared, and their thermal stability and anisotropic transport properties are systematically studied. Unexpectedly, different from the theoretical prediction and other typical layered thermoelectric compounds like Bi_2Te_3, the out-of-plane zT_c value is higher than in-plane zT_a for the same composition. The zT value is significantly enhanced by Cl doping. A maximum zT_c of ~0.4 at 673 K is achieved in SnSe_(1.88)Cl_(0.12), twice higher than previously reported Cl-doped SnSe_2 synthesized by the solvothermal method.Peipei Xu Tiezheng Fu Jiazhan Xin Yintu Liu Pingjun Ying Xinbing Zhao Hongge Pan Tiejun Zhu 2017Science Bulletin2017,62,24:4
13Evaluation of sperm mitochondrial function using rh123/PI dual fluorescent staining in asthenospermia and oligoasthenozoospermia显示文摘Objective:The recent advent of flow cytometry(FCM),coupled with fluorescent dyes,has been successfully applied to assess mitochondrial function.The aim of this study was to investigate the feasibility and clinical significance of detecting sperm mitochondrial function and to evaluate sperm mitochondrial function by using Rhodamine 123/propidium(Rh123/PI)dual fluorescent staining and FCM in asthenospermia and oligoasthenozoospermia.Methods:Twenty-five fertile men(with normal sperm parameters)and 230 infertile patients were examined.Fifty-five patients of the above 230 patients were selected for idiopathic infertility samples and were divided into two groups:asthenospermia(n=30)and oligoasthenozoospermia(n=25).Rh123/PI dual fluorescent staining and FCM were carried out to examine sperm mitochondrial function.Results:Significant differences were found between the normal and abnormal semen samples(P<0.05)when Rh123+/PI-,Rh123-/PI+and Rh123-/PI-sperm were examined by FCM,but there was no significant difference between the asthenospermia(P=0.469) and oligoasthenozoospermia group(P=0.950)when Rh123+/PI-and Rh123-/PI+sperm were then examined;however,a significant difference was found between the 2 groups(P=0.003)when Rh123-/PI-sperm were examined.There was no correlation between Rh123-/PI-sperm and semen parameters in the normal group,but there was a significant negative correlation between the sperm concentration and Rh123-/PI-sperm in asthenospermia and oligoasthenozoospermia patients(r=-0.509,-0.660;P=0.018,0.038).Conclusion:Rh123/PI dual fluorescent staining and FCM can provide reliable information to assess the quality of sperm and reveal differences in mitochondrial membrane potential in asthenospermia and oligoasthenozoospermia.Tiejun Zou Xiang Liu Shangshu Ding Junping Xing 2010The Journal of Biomedical Research2010,24,5:4
14The influence of ENSO on sea surface temperature variations in the China seas显示文摘Positive SST anomalies usually appear in remote ocean such as the China seas during an ENSO event.By analyzing the monthly data of HadISST from 1950 to 2007,it shows that the interannual component of SST anomalies peak approximately 10 months after SST anomalies peak in the eastern equatorial Pacific.As the ENSO event progresses,the positive SST anomalies spread throughout the China seas and eastward along the Kuroshio extension.Atmospheric reanalysis data demonstrate that changes in the net surface heat flux entering into the China seas are responsible for the SST variability.During El Ni o,the western north Pacific anticyclone is generated,with anomalous southwester lies prevailing along the East Asian coast.This anticyclone reduces the mean surface wind speed which decreases the surface heat flux and then increases the SST.The delays between the developing of this anticyclone and the south Indian Ocean anticyclone with approximately 3–6 months cause the 2–3 months lag of the surface heat flux between the China seas and the Indian Ocean.The northwestern Pacific anticyclone is the key process bridging the warming in the eastern equatorial Pacific and that in the China seas.LIU Na WANG Hui LING Tiejun FENG Licheng 2013Acta Oceanologica Sinica2013,32,9:4
15A Research on Bilingual Dictionary Based Sentence Alignment for Chinese English Parallel Corpus显示文摘Parallel corpus is of great importance to machine translation, and automatic sentence alignment is the first step towards its processing. This paper puts forward a bilingual dictionary based sentence alignment method for Chinese English parallel corpus, which differs from previous length based algorithm in its knowledge-rich approach. Experimental result shows that this method produces over 93% accuracy with usual English-Chinese dictionaries whose translations cover 31 88%~47 90% of the corpus.杨沐昀 Li Sheng Zhao Tiejun Lu Yajuan Liu Zhanyi 2002High Technology Letters2002,8,1:3
16Application of immune checkpoint targets in the anti-tumor novel drugs and traditional Chinese medicine development显示文摘Immune checkpoints are the crucial regulators of immune system and play essential roles in maintaining self-tolerance,preventing autoimmune responses,and minimizing tissue damage by regulating the duration and intensity of the immune response.Furthermore,immune checkpoints are usually overexpressed in cancer cells or noninvasive cells in tumor tissues and are capable of suppressing the antitumor response.Based on substantial physiological analyses as well as preclinical and clinical studies,checkpoint molecules have been evaluated as potential therapeutic targets for the treatment of multiple types of cancers.In the last few years,extensive evidence has supported the immunoregulatory effects of traditional Chinese medicines(TCMs).The main advantage of TCMs and natural medicine is that they usually contain multiple active components,which can act on multiple targets at the same time,resulting in additive or synergistic effects.The strong immune regulation function of traditional Chinese medicine on immune checkpoints has also been of great interest.For example,Astragalus membranaceus polysaccharides can induce anti-PD-1 antibody responses in animals,and these antibodies can overcome the exhaustion of immune cells under tumor immune evasion.Furthermore,many other TCM molecules could also be novel and effective drug candidates for the treatment of cancers.Therefore,it is essential to assess the application of immune checkpoints in the development of new drugs and TCMs.In this review,we focus on research progress in the field of immune checkpoints based on three topics:(1)immune checkpoint targets and pathways,(2)development of novel immune checkpoint-based drugs,and(3)application of immune checkpoints in the development of TCMs.Yuli Wang Xingyan Zhang Yuyan Wang Wenjing Zhao Huling Li Lixing Zhang Xinping Li Tiejun Zhang Hongbing Zhang He Huang Changxiao Liu 2021Acta Pharmaceutica Sinica B2021,11,10:3
17Effect of Ermiao Fang with Xixin(Herba Asari Mandshurici) on bone marrow stem cell directional homing to a focal zone in an osteoarthritis rat model显示文摘OBJECTIVE: To investigate the effects of Ermiao Fang(EM) with medical guide Xixin(Herba Asari Mandshurici)(HAM) on bone marrow stem cell migration to a focal zone in osteoarthritis(OA) rats.METHODS: OA rats were induced by arthrectomy and assigned to sham-operated, model, EM, or EM plus HAM groups.All rats were injected with recombinant human granulocyte colony-stimulating factor 30μg·kg-1·d-1for7 days and treated with EMor EM plus HAM at 1.6 or 1.9 g·kg-1·d-1 for 3 or 6 weeks, respectively. Chondrocyte apoptosis and cartilage matrix components were tested by transferase-mediated deoxyuridine triphosphate-biotin nick end labeling assay and special staining. Levels of interleukin-1 beta(IL-1β) tumor necrosis factor alpha(TNF-α) nitric oxide(NO), and inducible nitric oxide synthase(iNOS) in serum were detected by enzyme-linked immunosorbent assay or radioimmunoassay. Matrix metalloproteinases(MMPs)-13,tissue inhibitors of metalloproteinases(TIMPs)-1,Bromodeoxyuridine(BrdU), cluster of differentiation 34(CD34), and stromal cell-derived factor 1(SDF-1) were measured by immunohistochemical assay.RESULTS:The EM and EM plus HAM groups had significantly less cartilage damage and synovium inflammation the model group. Moreover, the EM and EM plus HAM groups had less chondrocyte apoptosis and more proteoglycan and collagen content than the model group.The EM and EMplus HAM groups had obviously higher MMPs-13 and TIMPs-1 expression in the cartilage than the model group. Moreover, the two formula groups had less release of IL-1β, TNF-α, NO, and iNOS than model group. Importantly, the expressions of BrdU, CD34,and SDF-1 in cartilage were significantly higher in the EM and EM plus HAM-Medtreated rats than model group. Notably, the EM plus HAM treatment seemed to have the greatest effects.CONCLUSION: HAM improves the therapeutic effects of EM on OA rats by enhancing BMSC directional homing to the focal zone.Ying Xu Guojing Dai Qian Liu Hongwei Zhu Weiheng Chen Ping Zhang Tiejun Zhao Na Lin 2014Journal of Traditional Chinese Medicine2014,34,4:3
18Down-regulation of GPR137 expression inhibits proliferation of colon cancer cells显示文摘G 联合蛋白质的受体(GPR ) 是高度与 oncogenesis 和癌症转移有关。G 联合蛋白质的受体(GPR137 ) 137 大约 10 年以前开始作为新奇孤儿 GPR 被报导。一些孤儿 GPR 在人的癌症被含有。这研究的目的是在人的结肠癌调查 GPR137 的角色。GRP137 的表示层次被量的聚合酶链反应和西方的污点分析在不同结肠癌房间线分析。调停 Lentivirus 的短发卡 RNA 明确地被设计在结肠癌房间将 GPR137 表示击倒。房间生存能力被 methylthiazoletetrazolium 和殖民地形成试金测量。另外,房间周期特征被流动 cytometry 调查。GRP137 表示在不同层次在所有七根结肠癌房间线被观察。GPR137 的 mRNA 和蛋白质层次在在 lentivirus 感染以后的 HCT116 和 RKO 房间是下面调整的。GPR137 的调停 Lentivirus 的 silencing 减少了增长率和殖民地数字。在导致的两根房间线的 GPR137 击倒在 G 0/G1 阶段的房间周期拘捕。这些结果显示 GPR137 在结肠癌房间增长起一个重要作用。GPR137 在结肠癌房间的信号 transduction 小径上的效果的更好的理解可以提供卓见进结肠癌的新奇基因治疗。Kai Zhang Zhen Shen Xianjun Liang Tongjun Liu Tiejun Wang Yang Jiang 2014Acta Biochimica et Biophysica Sinica2014,46,11:3
19Copy number alteration profiling facilitates differential diagnosis between ossifying fibroma and fibrous dysplasia of the jaws显示文摘Ossifying fibroma(OF)and fibrous dysplasia(FD)are two fibro-osseous lesions with overlapping clinicopathological features,making diagnosis challenging.In this study,we applied a whole-genome shallow sequencing approach to facilitate differential diagnosis via precise profiling of copy number alterations(CNAs)using minute amounts of DNA extracted from morphologically correlated microdissected tissue samples.Freshly frozen tissue specimens from OF(n=29)and FD(n=28)patients were obtained for analysis.Lesion fibrous tissues and surrounding normal tissues were obtained by laser capture microdissection(LCM),with~30–50 cells(5000–10000µm2)per sample.We found that the rate of recurrent CNAs in OF cases was much higher(44.8%,13 of 29)than that in FD cases(3.6%,1 of 28).Sixty-nine percent(9 of 13)of the CNA-containing OF cases involved segmental amplifications and deletions on Chrs 7 and 12.We also identified eight CNA-associated genes(HILPDA,CALD1,C1GALT1,MICALL2,PHF14,AIMP2,MDM2,and CDK4)with amplified expression,which was consistent with the copy number changes.We further confirmed a jaw lesion with a previous uncertain diagnosis due to its ambiguous morphological features and the absence of GNAS mutation as OF based on the typical Chr 12 amplification pattern in its CNA profile.Moreover,analysis of a set of longitudinal samples collected from an individual with a cellular lesion in suspicion of OF at the first surgery,recurrence and the latest malignant transformation revealed identical CNA patterns at the three time points,suggesting that copy number profiling can be used as an important tool to identify borderline lesions or lesions with malignant potential.Overall,CNA profiling of fibro-osseous lesions can greatly improve differential diagnosis between OF and FD and help predict disease progression.Ming Ma Lu Liu Ruirui Shi Jianyun Zhang Xiaotian Li Xuefen Li Jiaying Bai Jianbin Wang Yanyi Huang Tiejun Li 2021International Journal of Oral Science2021,13,2:3
20Impacts of Land-Use Data on the Simulation of Surface Air Temperature in Northwest China显示文摘This study examines the impacts of land-use data on the simulation of surface air temperature in Northwest China by the Weather Research and Forecasting(WRF) model. International Geosphere–Biosphere Program(IGBP) landuse data with 500-m spatial resolution are generated from Moderate Resolution Imaging Spectroradiometer(MODIS)satellite products. These data are used to replace the default U.S. Geological Survey(USGS) land-use data in the WRF model. Based on the data recorded by national basic meteorological observing stations in Northwest China, results are compared and evaluated. It is found that replacing the default USGS land-use data in the WRF model with the IGBP data improves the ability of the model to simulate surface air temperature in Northwest China in July and December 2015. Errors in the simulated daytime surface air temperature are reduced, while the results vary between seasons. There is some variation in the degree and range of impacts of land-use data on surface air temperature among seasons. Using the IGBP data, the simulated daytime surface air temperature in July 2015 improves at a relatively small number of stations, but to a relatively large degree; whereas the simulation of daytime surface air temperature in December 2015 improves at almost all stations, but only to a relatively small degree(within 1°C). Mitigation of daytime surface air temperature overestimation in July 2015 is influenced mainly by the change in ground heat flux. The modification of underestimated temperature comes mainly from the improvement of simulated net radiation in December 2015.Yaohui LI Cailing ZHAO Tiejun ZHANG Wei WANG Haixia DUAN Yuanpu LIU Yulong REN Zhaoxia PU 2018Journal of Meteorological Research2018,32,6:2
返回顶部 每页显示:
共4页 首页 上一页 第1页 下一页 末页 /4 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费