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167篇 您的检索式:作者名="XueMei Wu"
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1Trends of incidence rate and age at diagnosis for cervical cancer in China,from 2000 to 2014显示文摘Objective: To analyze the trends of incidence rate and age at diagnosis for cervical cancer incidence in China using population-based cancer registration data from 2000 to 2014.Methods: Data were from National Central Cancer Registry of China.Crude incidence rates(CIRs),age-specific incidence rate,age-standardized incidence rates(ASIRs),age percentage distribution,standardized age percentage distribution,mean age at diagnosis and standardized mean age at diagnosis for cervical cancer in all areas of China,urban China and rural China were calculated separately.The world Segi's population was applied to remove the age structure influence.Joinpoint regression was performed to obtain average annual percent change(AAPC) and ageperiod-cohort analysis was used to examine the incidence trends.Results: CIRs and ASIRs for cervical cancer increased in China from 2000 to 2014.The AAPC of ASIRs in China was at 9.2% [95% confidence interval(95% CI): 7.0%–11.5%,P<0.05],and the AAPC in rural areas was relatively high.The age-specific incidence rate in groups aged 0–69 years have significantly increased over time.Groups aged 40–69 years showed the highest incidence risk,and the annual percent changes(APCs) of incidence rate in groups aged 40–59 years in urban China and groups aged 0–49 years in rural China were more than 10%.For each age group,the urban-to-rural incidence rate ratios(IRRs) got close to 1 over time.There were clear birth cohort effects in successive generations born from 1940 to 1970 in China.In rural China,the standardized mean age at diagnosis had significantly declined by 5.18 years.In China,the main peak and secondary peak of standardized age percentages appeared in the groups aged 45–49 and 40–44 years,respectively.In rural China,the main peak of standardized age percentage moved from the group aged 55–59 years to the group aged 45–49 years,and the standardized age percentages of groups aged 25–34 years also increased.In China,the standardized age percentages has significantly increased in groups aged 35–64 and 30–64 years over time,and accounted for about80% and 85% in 2014,respectively.Conclusions: The cervical cancer incidence increased in China and the gap of incidence between urban and rural China was narrowed.The trends of increasing cervical cancer incidence among younger women existed in China,especially in rural China.A more appropriate screening,vaccination and health education strategies should be established.Xueting Li Rongshou Zheng Xuemei Li Haibin Shah Qi Wu Yan Wang Wanqing Chen 2017Chinese Journal of Cancer Research2017,29,6:64
2The role of the gut microbiome and its metabolites in metabolic diseases显示文摘It is well known that an unhealthy lifestyle is a major risk factor for metabolic diseases,while in recent years,accumulating evidence has demonstrated that the gut microbiome and its metabolites also play a crucial role in the onset and development of many metabolic diseases,including obesity,type 2 diabetes,nonalcoholic fatty liver disease,cardiovascular disease and so on.Numerous microorganisms dwell in the gastrointestinal tract,which is a key interface for energy acquisition and can metabolize dietary nutrients into many bioactive substances,thus acting as a link between the gut microbiome and its host.The gut microbiome is shaped by host genetics,immune responses and dietary factors.The metabolic and immune potential of the gut microbiome determines its significance in host health and diseases.Therefore,targeting the gut microbiome and relevant metabolic pathways would be effective therapeutic treatments for many metabolic diseases in the near future.This review will summarize information about the role of the gut microbiome in organism metabolism and the relationship between gut microbiome-derived metabolites and the pathogenesis of many metabolic diseases.Furthermore,recent advances in improving metabolic diseases by regulating the gut microbiome will be discussed.Jiayu Wu Kai Wang Xuemei Wang Yanli Pang Changtao Jiang 2021Protein & Cell2021,12,5:40
3Structures of EV71 RNA-dependent RNA polymerase in complex with substrate and analogue provide a drug target against the hand-foot-and-mouth disease pandemic in China显示文摘Enterovirus 71(EV71),one of the major causative agents for hand-foot-and-mouth disease(HFMD),has caused more than 100 deaths among Chinese children since March 2008.The EV71 genome encodes an RNAdependent RNA polymerase(RdRp),denoted 3D^(pol),which is central for viral genome replication and is a key target for the discovery of specific antiviral therapeutics.Here we report the crystal structures of EV71 RdRp(3D^(pol))and in complex with substrate guanosine-5'-triphosphate and analog 5-bromouridine-5'-triphosphate best to 2.4Åresolution.The structure of EV71 RdRp(3D^(pol))has a wider open thumb domain compared with the most closely related crystal structure of poliovirus RdRp.And the EV71 RdRp(3D^(pol))complex with GTP or Br-UTP bounded shows two distinct movements of the polymerase by substrate or analogue binding.The model of the complex with the template:primer derived by superimposition with foot-and-mouth disease virus(FMDV)3D/RNA complex reveals the likely recognition and binding of template:primer RNA by the polymerase.These results together provide a molecular basis for EV71 RNA replication and reveal a potential target for anti-EV71 drug discovery.Yang Wu Zhiyong Lou Yi Miao Yue Yu Hui Dong Wei Peng Mark Bartlam Xuemei Li Zihe Rao 2010Protein & Cell2010,1,5:30
4Ablation of gut microbiota alleviates obesity-induced hepatic steatosis and glucose intolerance by modulating bile acid metabolism in hamsters显示文摘Since metabolic process differs between humans and mice, studies were performed in hamsters, which are generally considered to be a more appropriate animal model for studies of obesityrelated metabolic disorders. The modulation of gut microbiota, bile acids and the farnesoid X receptor(FXR) axis is correlated with obesity-induced insulin resistance and hepatic steatosis in mice. However,the interactions among the gut microbiota, bile acids and FXR in metabolic disorders remained largely unexplored in hamsters. In the current study, hamsters fed a 60% high-fat diet(HFD) were administeredvehicle or an antibiotic cocktail by gavage twice a week for four weeks. Antibiotic treatment alleviated HFD-induced glucose intolerance, hepatic steatosis and inflammation accompanied with decreased hepatic lipogenesis and elevated thermogenesis in subcutaneous white adipose tissue(sWAT). In the livers of antibiotic-treated hamsters, cytochrome P450 family 7 subfamily B member 1(CYP7 B1) in the alternative bile acid synthesis pathway was upregulated, contributing to a more hydrophilic bile acid profile with increased tauro-β-muricholic acid(TβMCA). The intestinal FXR signaling was suppressed but remained unchanged in the liver. This study is of potential translational significance in determining the role of gut microbiota-mediated bile acid metabolism in modulating diet-induced glucose intolerance and hepatic steatosis in the hamster.Lulu Sun Yuanyuan Pang Xuemei Wang Qing Wu Huiying Liu Bo Liu George Liu Min Ye Wei Kong Changtao Jiang 2019Acta Pharmaceutica Sinica B2019,9,4:29
5WRF/CHEM modeling of impacts of weather conditions modified by urban expansion on secondary organic aerosol formation over Pearl River Delta显示文摘In this paper,the online Weather Research and Forecasting and Chemistry (WRF/CHEM) model,coupled with urban canopy (UCM) and biogenic-emission models,is used to explore impacts of urban expansion on secondary organic aerosols (SOA) formation. Two scenarios of urban maps are used in WRF/CHEM to represent early 1990s (pre-urbanization) and current urban distribution in the Pearl River Delta (PRD). Month-long simulation results using the above land-use scenarios for March 2001 show:(1) urbanization can increase monthly averaged temperatures by about 0.63 ?C,decrease monthly averaged 10-m wind speeds by 38%,increase monthly averaged boundary-layer depths by 80 m,and decrease monthly aver-aged water mixing ratio by 0.2 g/kg. (2) Changes in meteorological conditions can result in detectable concentration changes of NOx,VOC,O3 and NO3 radicals. Urbanization decreases surface NOx and VOC concentrations by a maximum of 4 ppbv and 1.5 ppbv,respectively. Surface O3 and NO3 radical concen-trations over major cities increase by about 2-4 ppbv and 4-12 pptv,respectively; areas with increasing O3 and NO3 radical concentrations generally coincide with the areas of temperature increase and wind speed reduction where NOx and VOC decrease. (3) Urbanization can induce 9% increase of SOA in Foshan,Zhongshan and west Guangzhou and 3% decrease in Shenzhen and Dongguan. Over PRD major cities,SOA from Aitken mode reduces by 30% but with more than 70% SOA from accumulate mode. Urbanization has stronger influence on SOA formation from Aitken mode. (4) Over the PRD,55-65% SOA comes from aromatics precursors. Urbanization has strongest influence on aromatics precursors to produce SOA (14% increase),while there is less influence on alkane precursors. Alkene precursors have negative contribution to SOA formation under urbanization situation.Xuemei Wang Zhiyong Wu Guixiong Liang 2009Particuology2009,7,5:25
6Effects of dietary Clostridium butyricum supplementation on growth performance,intestinal development,and immune response of weaned piglets challenged with lipopolysaccharide显示文摘Background: Weanling pigs, with immature immune system and physiological function, usually experience postweaning diarrhea. This study determined the effects of dietary Clostridium butyricum supplementation on growth performance, diarrhea, and immunity of weaned pigs challenged with lipopolysaccharide(LPS).Methods: In Experiment(Exp.) 1,144 weaned piglets were weaned at 21 d and randomly assigned to six groups,with six replicates per group and four pigs per replicate, receiving a control diet(CON) or diet supplemented with antibiotics(AB) or C. butyricum(CB)(0.1%, 0.2%, 0.4%, or 0.8%), respectively. All diets in Exp. 1 were a highly digestible basal diet, with 3,000 mg/kg zinc oxide supplied in the first 2 wk only. In Exp. 2, 180 piglets were weaned at 21 d and randomly assigned to five groups, with six replicates per group and six pigs per replicate, receiving CON, AB, or CB(0.2%, 0.4%, or 0.6%) diets. The digestibility of diets was lower than those in Exp. 1, and did not include zinc oxide. At 36 d of Exp. 2, 12 piglets were selected from each of the CON and 0.4% CB groups, six piglets were intraperitoneally injected with LPS(50 μg/kg body weight) and the other six piglets with normal saline;animals were killed at 4 h after injection to collect blood, intestine, and digesta samples for biochemical analysis.Results: In Exp. 1, CB and AB diets had no effect on growth performance of piglets. In Exp. 2, 0.4% CB decreased feed-gain ratio(P < 0.1), diarrhea score(P < 0.05), and increased duodenal, jejunal, and ileal villus height and jejunal villus height/crypt depth(P < 0.05). The 0.4% CB decreased the plasma tumor necrosis factor(TNF) α(P < 0.05) but increased ileal mucosa IL-10 and TLR2 mRNA expression(P < 0.05). Furthermore, 0.4% CB altered the microbial profile, with Bacillus and Ruminococcaceae UGG-003 at genus level and Lactobacillus casei and Parasutterella secunda at species level were higher than CON in colonic content(P < 0.05).Conclusions: Dietary C. butyricum supplementation had positive effects on growth of weaned piglets with less digestible diets. There was a tendency to reduce the feed-gain ratio, which could reduce feed costs in pig production. Moreover, C. butyricum decreased post-weaning diarrhea by improving the intestinal morphology,intestinal microflora profile, and immune function.Ling Chen Shuang Li Jie Zheng Wentao Li Xuemei Jiang Xilun Zhao Jian Li Lianqiang Che Yan Lin Shengyu Xu Bin Feng Zhengfeng Fang De Wu 2018Journal of Animal Science and Biotechnology2018,9,4:26
7Apoptosis-inducing activity of the antimicrobial peptide cecropin of Musca domestica in human hepatocellular carcinoma cell line BEL-7402 and the possible mechanism显示文摘我们在人的 hepatocellular 癌房间线 BEL-7402 和它的内在的机制学习了蝇属 domestica 的抗菌剂肽 cecropin 的导致 apoptosis 性质。人的 hepatocellular 癌 BEL-7402 房间和人的正常的肝房间的增长抑制被 MTT 试金决定,并且房间生存能力被 trypan 蓝色染料排除试金决定。与 cecropin 对待的 apoptotic 肿瘤房间被传播电子显微镜学和 terminal-deoxynucleotidyl transferase 检验标记的调停的刻痕结束。apoptosis 率被流动 cytometry (FCM ) 与 PI/Annexin-V 测量两倍染色。西方的污点分析和 RT-PCR 被用来决定涉及 apoptosis 的蛋白质的表示层次,例如船边交货, Fas-L, caspase-8,和 caspase-3。试验性的结果证明蝇属 domestica cecropin 在剂量依赖者和时间依赖者礼貌禁止了人的 hepatocellular 癌 BEL-7402 房间的增长,没有影响正常的肝房间的增长。FCM 证明房间 apoptosis 率是 5.Xiaobao Jin 2010Acta Biochimica et Biophysica Sinica2010,42,4:23
8Wet and dry deposition fluxes of heavy metals in Pearl River Delta Region(China):Characteristics,ecological risk assessment,and source apportionment显示文摘The atmospheric deposition of heavy metals poses serious risks to the ecological system and human health. To advance our knowledge of atmospheric dry/wet heavy metal deposition in the PRD region, monthly fluxes were examined based on soluble/insoluble fractions of five heavy metal elements(Cu, Pb, Cd, Cr and Zn) in samples collected from January 2014 to December 2015 at Guangzhou(urban) and Dinghushan(suburban) sites. The ratios of wet/dry deposition fluxes indicated that heavy metal deposition was governed by wet deposition rather than dry deposition in the PRD region. Affected by the shifting of the Asian monsoon, wet deposition fluxes exhibited significant seasonal variation between summer monsoon seasons(April to September) and winter monsoon seasons(October to February) in this region. Cd was classified as an extremely strong potential ecological risk based on solubility and the Hakanson ecological risk index. Source contributions to wet deposition were calculated by PMF, suggesting that dust, biomass burning, industries,vehicles, long-range transport and marine aerosol sources in Guangzhou, and Zn fertilizers,marine aerosol sources, agriculture, incense burning, biomass burning, vehicles and the ceramics industry in Dinghushan, were the potential sources of heavy metals.Lyumeng Ye Minjuan Huang Buqing Zhong Xuemei Wang Qiulan Tu Haoran Sun Chao Wang Luolin Wu Ming Chang 2018Journal of Environmental Sciences2018,30,8:20
9Ecosystem vulnerability of China under B2 climate scenario in the 21st century显示文摘This paper applies climate change scenarios in China based on the SRES assumptions with the help of RCMs projections by PRECIS (providing regional climates for impacts studies) system introduced to China from the Hadley Centre for Climate Prediction and Research at a high-resolution (50 km×50 km) over China. This research focuses on B2 scenario of SRES. A biogeochemical model 'Atmosphere Vegetation Integrated Model (AVIM2)' was applied to simulating ecosystem status in the 21st century. Then vulnerability of ecosystems was assessed based on a set of index of mainly net primary production (NPP) of vegetation. Results show that climate change would affect ecosystem of China severely and there would be a worse trend with the lapse of time. The regions where having vulnerable ecological background would have heavier impacts while some regions with better ecological background would also receive serious impacts. Extreme climate even would bring about worse impact on the ecosystems. Open shrub and desert steppe would be the two most affected types. When the extreme events happen, vulnerable ecosystem would extend to part of defoliate broad-leaved forest, woody grassland and evergreen conifer forest. Climate change would not always be negative. It could be of some benefit to cold region during the near-term. However, in view of mid-term to long-term negative impact on ecosystem vulnerability would be enormously.WU ShaoHong DAI ErFu HUANG Mei SHAO XueMei LI ShuangCheng TAO Bo 2007Chinese Science Bulletin2007,52,10:18
10Reconstruction of summer temperature variation from maximum density of alpine pine during 1917-2002 for west Sichuan Plateau, China显示文摘Having analyzed the tree ring width and maximum latewood density of Pinus den-sata from west Sichuan,we obtained different climate information from tree-ring width and maximum latewood density chronology. The growth of tree ring width was responded princi-pally to the precipitation in current May,which might be influenced by the activity of southwest monsoon,whereas the maximum latewood density reflected summer temperature (June–September). According to the correlation relationship,a transfer function had been used to reconstruct summer temperature for the study area. The explained variance of re-construction is 51% (F=52.099,p<0.0001). In the reconstruction series: before the 1930s,the climate was relatively cold,and relatively warm from 1930 to 1960,this trend was in accor-dance with the cold-warm period of the last 100 years,west Sichuan. Compared with Chengdu,the warming break point in west Sichuan is 3 years ahead of time,indicating that the Tibetan Plateau was more sensitive to temperature change. There was an evident sum-mer warming signal after 1983. Although the last 100-year running average of summer tem-perature in the 1990s was the maximum,the running average of the early 1990s was below the average line and it was cold summer,but summer drought occurred in the late 1990s.WU Pu WANG Lily SHAO Xuemei 2008Journal of Geographical Sciences2008,18,2:16
11Humoral immune response to circulating SARS-CoV-2 variants elicited by inactivated and RBD-subunit vaccines显示文摘SARS-CoV-2 variants could induce immune escape by mutations on the receptor-binding domain(RBD)and N-terminal domain(NTD).Here we report the humoral immune response to circulating SARS-CoV-2 variants,such as 501Y.V2(B.1.351),of the plasma and neutralizing antibodies(NAbs)elicited by CoronaVac(inactivated vaccine),ZF2001(RBD-subunit vaccine)and natural infection.Among 86 potent NAbs identified by high-throughput single-cell VDJ sequencing of peripheral blood mononuclear cells from vaccinees and convalescents,near half anti-RBD NAbs showed major neutralization reductions against the K417N/E484K/N501Y mutation combination,with E484K being the dominant cause.VH3-53/VH3-66 recurrent antibodies respond differently to RBD variants,and K417N compromises the majority of neutralizing activity through reduced polar contacts with complementarity determining regions.In contrast,the 242–244 deletion(242–244Δ)would abolish most neutralization activity of anti-NTD NAbs by interrupting the conformation of NTD antigenic supersite,indicating a much less diversity of anti-NTD NAbs than anti-RBD NAbs.Plasma of convalescents and CoronaVac vaccinees displayed comparable neutralization reductions against pseudo-and authentic 501Y.V2 variants,mainly caused by E484K/N501Y and 242–244Δ,with the effects being additive.Importantly,RBD-subunit vaccinees exhibit markedly higher tolerance to 501Y.V2 than convalescents,since the elicited anti-RBD NAbs display a high diversity and are unaffected by NTD mutations.Moreover,an extended gap between the third and second doses of ZF2001 leads to better neutralizing activity and tolerance to 501Y.V2 than the standard three-dose administration.Together,these results suggest that the deployment of RBD-vaccines,through a third-dose boost,may be ideal for combating SARS-CoV-2 variants when necessary,especially for those carrying mutations that disrupt the NTD supersite.Yunlong Cao Ayijiang Yisimayi Yali Bai Weijin Huang Xiaofeng Li Zhiying Zhang Tianjiao Yuan Ran An Jing Wang Tianhe Xiao Shuo Du Wenping Ma Liyang Song Yongzheng Li Xiang Li Weiliang Song Jiajing Wu Shuo Liu Xuemei Li Yonghong Zhang Bin Su Xianghua Guo Yangyang Wei Chuanping Gao Nana Zhang Yifei Zhang Yang Dou Xiaoyu Xu Rui Shi Bai Lu Ronghua Jin Yingmin Ma Chengfeng Qin Youchun Wang Yingmei Feng Junyu Xiao Xiaoliang Sunney Xie 2021Cell Research2021,31,7:12
12Long-term trends of fine particulate matter and chemical composition in the Pearl River Delta Economic Zone (PRDEZ), China显示文摘在下午 2.5 层次理解趋势为提出是必要的干净空气计划。这份报纸在珀尔河三角洲经济地区(PRDEZ ) 为 2000 年从各种各样的出版来源分析下午 2.5 数据到 2010。在下午 2.5 团集中的长期的变化被分析。结果给那位首相看 2.5, 器官的碳(OC ) ,元素的碳(EC ) ,并且那么 42 显示出一个类似的趋势,在 2005 前增加然后稍微减少。年度普通下午 2.5 集中从 49.1 g ?Xuemei WANG Weihua CHEN Duohong CHEN Zhiyong WU Qi Fan 2016Frontiers of Environmental Science & Engineering2016,10,1:11
13Combined model based on optimized multi-variable grey model and multiple linear regression显示文摘The construction method of background value is improved in the original multi-variable grey model (MGM(1,m)) from its source of construction errors.The MGM(1,m) with optimized background value is used to eliminate the random fluctuations or errors of the observational data of all variables,and the combined prediction model together with the multiple linear regression is established in order to improve the simulation and prediction accuracy of the combined model.Finally,a combined model of the MGM(1,2) with optimized background value and the binary linear regression is constructed by an example.The results show that the model has good effects for simulation and prediction.Pingping Xiong Yaoguo Dang Xianghua wu Xuemei Li 2011Journal of Systems Engineering and Electronics2011,22,4:10
14Climatic significance of the stable carbon isotope composition of tree-ring cellulose:Comparison of Chinese hemlock (Tsuga chinensis Pritz) and alpine pine (Pinus densata Mast) in a temperate-moist region of China显示文摘In the reconstruction of past climate using stable carbon isotope composition (δ13C) in tree ring,the responses of the stable carbon composition (δ13C) of multiple tree species to environmental factors must be known detailedly. This study presented two δ13C series in annual tree rings for Chinese hem-lock (Tsuga chinensis Pritz) and alpine pine (Pinus densata Mast),and investigated the relationships between climatic parameters and stable carbon discrimination (△13C) series,and evaluated the poten-tial of climatic reconstruction using △13C in both species,in a temperate-moist region of Chuanxi Pla-teau,China. The raw δ13C series of the two species was inconsistent,which may be a result of different responses caused by tree's inherent physiological differences. After removing the low-frequency ef-fects of CO2 concentration,the high-frequency (year-to-year) inter-series correlation of △13C was strong,indicating that △13C of the two tree species were controlled by common environmental conditions. The △13C series of the species were most significantly correlated with temperature and moisture stress,but in different periods and intensity between the species. During the physiological year,the impacts of temperature and moisture stress on △13C occur earlier for Chinese hemlock (previous December to February for moisture stress and February to April for temperature,respectively) than for alpine pine (March to May for moisture stress and April to July for temperature,respectively). In addition,in temperate-moist regions,the control on △13C of single climatic parameter was not strongly dominant and the op-timal multiple regressions functions just explained the 38.5% variance of the total. Therefore,there is limited potential for using δ13C alone to identify clear,reliable climatic signals from two species.LIU XiaoHong SHAO XueMei WANG LiLi ZHAO LiangJu WU Pu CHEN Tuo QIN DaHe REN JiaWen 2007Science China Earth Sciences2007,50,7:10
15The single nucleotide polymorphisms of the chicken myostatin gene are associated with skeletal muscle and adipose growth显示文摘Myostatin, a new member of the TGF-β superfamily, is predominantly expressed in skeletal muscle cells and functions as a negative regulator of skeletal muscle growth in animals. Recently, we have reported three single nucleotide polymorphisms (SNPs) in the chicken myostatin gene. Herein, we investigate the association of those SNPs with the production traits in a F2 chicken line derived from Broilers crossing to Silky with the least square analysis. The results show that the BB and AA genotypes are strongly associated with abdominal fat weight (AFW), abdominal fat percentage (AFP), and birth weight (BW) (P < 0.05). Breast muscle percentage (BMP) of the AA type is higher than that of the AB type. The breast muscle weight and breast muscle percentages of F2 individuals have significant difference between CC and DD genotypes (P < 0.05). Breast muscle weight (BMW) of EF birds is higher than that of EE birds (P < 0.05). In this report, we present the first genetic evidence to show that chicken myostatin not only plays an important role in controlling skeletal muscle growth and differentiation, but also may be involved in regulation of adipose growth in chicken.GU Zhiliang, ZHU Dahai, LI Ming, LI Hui, DENG Xuemei & WU ChangxinMolecular and Cellular Developmental Biology Laboratory, Harbin Institute of Technology, Harbin 150001, China College of Animal Science & Technology, Northeast Agricultural University, Harbin 150030, China National Laboratories for Agribiotechnology, China Agricultural University, Beijing 100094, China College of Animal Science & Technology, China Agricultural University, Beijing 100094, China Department of Life Science and Technology, Changshu Institute of Technology, Changshu 215500, China Department of Biochemistry and Molecular Biology, National Laboratory of Medical Molecular Biology, Peking Union Medical College, Beijing 100005, China 2004Science China(Life Sciences)2004,47,1:9
16Effects of dietary supplementation with essential oils and protease on growth performance,antioxidation,inflammation and intestinal function of weaned pigs显示文摘This experiment evaluated the impacts of essential oils(EO)and protease(PRO),independently or in combination,on growth performance,antioxidation,inflammation and intestinal function of weaned pigs.One hundred and sixty weaned pigs(21 d of age,BW of 6.74±0.20 kg)were randomly divided into 4 treatments with 8 replicate pens of 5 pigs per pen.Dietary treatments included the following:1)control diet(CON),2)CON with 300 mg/kg essential oils(EO),3)CON with 500 mg/kg protease(PRO),4)CON with 300 mg/kg essential oil and 500 mg/kg protease(EO + PRO).On d 8,one pig from each penwas selected for sampling.The remaining pigs were fed for an additional week and growth performance was monitored during this period.Dietary treatments had no marked effects(P>0.05)on the growth performance of pigs.However,pigs receiving EO diet had higher(P<0.05)serumglutathione peroxidase(GSH-Px)activity,and tended to decrease(P=0.063)serum concentration of tumor necrosis factor-a(TNF-a).In addition,pigs receiving EO diet had higher(P<0.05)abundances of phylum Actinobacteria,and genera Bifidobacterium,and lower(P<0.05)phylum Bacteroidetes and genera Alloprevotella in colonic digesta.Pigs receiving PRO diet decreased(P<0.05)the serum concentration of malondialdehyde(MDA)and diamine oxidase activity,increased(P<0.05)the villus height and the ratio of villus height to crypt depth in duodenum,increased sucrase activity in jejunal mucosa,and also increased the abundance of phylum Actinobacteria in colonic digesta.Furthermore,the synergistic effects of EO and PROwas observed(P<0.05)for pigs with decreasing serum TNF-a concentration and increasing serum GSH-Px activity.Collectively,the results indicated that dietary supplementation of EO and PRO had no significant effects on growth performance of weaned pigs.EO diet appeared to improve antioxidant activity and intestinal microbiota,while PRO diet improved intestinal morphology and digestive enzyme activity,and there was a synergistic effect of EO and PRO on reducing inflammatory parameters in weaned pigs.Xie Peng Qiang Zhou Cheng Wu Jian Zhao Quan Tan Ying He Liang Hu Zhengfeng Fang Yan Lin Shengyu Xu Bin Feng Jian Li Yong Zhuo Chris Van Ginneken Xuemei Jiang De Wu Lianqiang Che 2022Animal Nutrition2022,,2:8
17Reinforcement effect of fiber and deoiled asphalt on high viscosity rubber/SBS modified asphalt mortar显示文摘In this paper we investigate the reinforcement mechanism of high viscosity rubber/SBS modified asphalt mortar mixed with fiber(mineral, lignin or carbon fiber) and deoiled asphalt(DOA). The softening point, penetration and viscosity tests were conducted to characterize the engineering properties of asphalt-fiber mortar. The microstructure of fiber was observed using scanning electron microscopy(SEM), and the results indicated that fiber can effectively improve the toughness of asphalt matrix through forming a spatial network structure, and then adhesion and stabilization of asphalt binder. The cone penetration test was designed to study the rheological property of fiber modified asphalt. The results indicated that the reinforcement effect increased with fibers and DOA fraction increasing to a certain threshold, and the optimal fiber content was dependent on the fiber type and its length. Fiber content and filler-asphalt ratio had significant effects on the softening point, penetration, viscosity and cone penetration of asphalt mortar.Wu Mengmeng Li Rui Zhang Yuzhen Wei Jianming Lv Yuchao Ding Xuemei 2014Petroleum Science2014,11,3:8
18CMHX008,a PPAR γ partial agonist,enhances insulin sensitivity with minor influences on bone loss显示文摘Traditional thiazolidinediones(TZDs),such as rosiglitazone,are peroxisome proliferator-activated receptor g(PPARg)potent agonists that can be used to treat type 2 diabetes but carry unwanted effects,including increased risk for fracture.The present work aimed to compare the insulin-sensitizing efficacies and bone-loss side effects of CMHX008,a novel TZDs-like PPARg partial agonist,with those of rosiglitazone.A TR-FRET PPARg competitive binding assay was used to compare the binding affinity between CMHX008 and rosiglitazone.Mice were administered vehicle,CMHX008 or rosiglitazone for 16 weeks.Mesenchymal stem cells(MSCs)were used to examine differences in differentiation into osteoblasts after compounds treatment.TR-FRET showed lower affinity to PPARg by CMHX008 compared with rosiglitazone.Mice treated with CMHX008 showed insulin sensitization similar to that of mice treated with rosiglitazone,which was related to the significant inhibition of PPARg Ser273 phosphorylation and improved insulin sensitivity by facilitating the phosphorylation of insulin receptor and Akt in adipose tissues.Micro-CT and histomorphometric analyses demonstrated that the degree of trabecular bone loss after treatment with CMHX008 was weaker than that observed with rosiglitazone,as evidenced by consistent changes in BV/TV,Tb.N,Tb.Th,Tb.Sp,and the mineral apposition rate.MSCs treated with CMHX008 showed higher ALP activity and mRNA levels of bone formation markers than did cells treated with rosiglitazone in the osteoblast differentiation test.Thus,CMHX008 showed insulin-sensitizing effects similar to those of rosiglitazone with a lower risk of bone loss,suggesting that PPARg sparing eliminates the skeletal side effects of TZDs while maintaining their insulin-sensitizing properties.Yi Hou Xuemei Cao Xiangnan Hu Xinyu Li Xiaoqin Shi Hongying Wang Chuan Peng Jiayu Li Jibin Li Qifu Li Chaodong Wu Xiaoqiu Xiao 2018Genes & Diseases2018,5,3:6
19A microRNA encoded by HSV-1 inhibits a cellular transcriptional repressor of viral immediate early and early genes显示文摘Viral microRNAs are one component of the RNA interference phenomenon generated during viral infection. They were first identified in the Herpesviridae family, where they were found to regulate viral mRNA translation. In addition, prior work has suggested that Kaposi's sarcoma-associated herpesvirus (KSHV) is capable of regulating cellular gene transcription by miRNA. We demonstrate that a miRNA, hsv1-mir-H27, encoded within the genome of herpes simplex virus 1 (HSV-1), targets the mRNA of the cellular transcriptional repressor Kelch-like 24 (KLHL24) that inhibits transcriptional efficiency of viral immediate-early and early genes. The viral miRNA is able to block the expression of KLHL24 in cells infected by HSV-1. Our discovery reveals an effective viral strategy for evading host cell defenses and supporting the efficient replication and proliferation of HSV-1.WU WenJuan GUO ZhongPing ZHANG XueMei GUO Lei LIU LongDing LIAO Yun WANG JingJing WANG LiChun LI QiHan 2013Science China(Life Sciences)2013,56,4:6
20Ginsenoside Rg1 ameliorates bloodebrain barrier disruption and traumatic brain injury via attenuating macrophages derived exosomes miR-21 release显示文摘During the traumatic brain injury(TBI),improved expression of circulatory miR-21 serves as a diagnostic feature.Low levels of exosome-miR-21 in the brain can effectively improve neuroinflammation and bloodebrain barrier(BBB)permeability,reduce nerve apoptosis,restore neural function and ameliorate TBI.We evaluated the role of macrophage derived exosomes-miR-21(M-Exos-miR-21)in disrupting BBB,deteriorating TBI,and Rg1 interventions.IL-1β-induced macrophages(ⅡA)-Exos-miR-21 can activate NF-kB signaling pathway and induce the expressions of MMP-1,-3 and-9 and downregulate the levels of tight junction proteins(TJPs)deteriorating the BBB.Rg1 reduced miR-21-5 p content in ⅡA-Exos(RⅡA-Exos).The interaction of NMIIAe HSP90 controlled the release of Exos-miR-21,this interaction was restricted by Rg1.Rg1 could inhibit the Exos-miR-21 release in peripheral blood flow to brain,enhancing TIMP3 protein expression,MMPs proteolysis,and restricting TJPs degradation thus protected the BBB integrity.Conclusively,Rg1 can improve the cerebrovascular endothelial injury and hold the therapeutic potential against TBI disease.Kefeng Zhai Hong Duan Wei Wang Siyu Zhao Ghulam Jilany Khan Mengting Wang Yuhan Zhang Kiran Thakur Xuemei Fang Chao Wu Jianbo Xiao Zhaojun Wei 2021Acta Pharmaceutica Sinica B2021,11,11:6
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