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982篇 您的检索式:作者名="Qian Peng"
    题名 作者 年代 出处 被引量
1Pharmacopoeia of the People's Republic of China(2010 Edition):A Milestone in Development of China's Healthcare显示文摘Compilation of the Pharmacopoeia of the People's Republic of China (known as the Chinese Pharmacopoeia 2010) has been completed by the Ninth Chinese Pharmacopoeia Commission, which has been officially distributed in January 2010 and implemented on October 1st, 2010.QIAN Zhong-zhi1,DAN Yang2,LIU Yan-ze2,PENG Yong2 1.Chinese Pharmacopoeia Commission,Beijing 100061,China 2.Institute of Medicinal Plant Development,Chinese Academy of Medical Sciences,Beijing 100193,China 2010Chinese Herbal Medicines2010,2,2:55
2Risk factors for cervical lymph node metastasis in papillary thyroid microcarcinoma: a study of 1,587 patients显示文摘Objective: The purposes of this study were to identify risk factors for cervical lymph node metastasis and to examine the association between BRAF^(V600E) status and clinical features in papillary thyroid microcarcinoma(PTMC).Methods: A total of 1,587 patients with PTMC, treated in Tianjin Medical University Cancer Institute and Hospital from January2011 to March 2013, underwent retrospective analysis. We reviewed and analyzed factors including clinical results, pathology records, ultrasound results, and BRAF^(V600E) status.Results: Multivariate logistic regression analyses demonstrated that gender(male) [odds ratio(OR) = 1.845, P = 0.000], age(< 45 years)(OR = 1.606, P = 0.000), tumor size(> 6 mm)(OR = 2.137, P = 0.000), bilateralism(OR = 2.011, P = 0.000) and extrathyroidal extension(OR = 1.555, P = 0.001) served as independent predictors of central lymph node metastasis(CLNM).Moreover, CLNM(OR = 29.354, P = 0.000) served as an independent predictor of lateral lymph node metastasis(LLNM). Among patients with a solitary primary tumor, those with tumor location in the lower third of the thyroid lobe or the isthmus were more likely to experience CLNM(P < 0.05). Univariate analyses indicated that CLNM, LLNM, extrathyroidal extension, and multifocality were not significantly associated with BRAF^(V600E) mutation.Conclusions: The present study suggested that prophylactic neck dissection of the central compartment should be considered in patients with PTMC, particularly in men with tumor size greater than 6 mm, age less than 45 years, extrathyroidal extension, and tumor bilaterality. Among patients with PTMC, BRAF^(V600E) mutation is not significantly associated with prognostic factors. For a better understanding of surgical management of PTMC and the risk factors, we recommend multicenter research and long-term follow-up.Xiangqian Zheng Chen Peng Ming Gao Jingtai Zhi Xiukun Hou Jingzhu Zhao Xi Wei Jiadong Chi Dapeng Li Biyun Qian 2019Cancer Biology & Medicine2019,16,1:54
3Trends in Lipids Level and Dyslipidemia among Chinese Adults, 2002-2015显示文摘Objective To investigate the trends of lipid profiles and dyslipidemia among Chinese adults from 2002 to 2015.Methods Data were collected from three nationally representative cross-sectional surveys.Fasting venous blood samples were collected and serum lipids were tested by biochemical analysis and enzymatic determination.Lipid levels and the prevalence of dyslipidemia among adults were analyzed with complex sampling weighting adjustment for age and gender.Results The weighted means of TC, TG, and LDL-c significantly increased linearly from 3.93, 1.12, and 2.12 mmol/L in 2002 to 4.59, 1.41, and 2.78 mmol/L in 2010 and then to 4.63, 1.47, and 2.87 mmol/L in 2015, respectively;by contrast, HDL-c levels decreased significantly from 1.30 mmol/L to 1.26 mmol/L over the same period.Similar trends in mean non-HDL-c and lipid-related ratios were observed.The weighted dyslipidemia prevalence linearly increased;in particular, hypercholesterolemia increased from 1.6% to 5.6% and then to 5.8%, hypertriglyceridemia increased from 5.7% to 13.6% and then to 15.0%, low HDL-c increased from 18.8% to 35.5% and then to 24.9%, and high LDL-c increased from 1.3% to 5.6% and then to 7.2%(P for trend <0.001).Conclusion Dyslipidemia increased among Chinese adults from 2002 to 2015.Development of a comprehensive strategy to decrease lipid levels in this population is urgently required.SONG Peng Kun MAN Qing Qing LI Hong PANG Shao Jie JIA Shan Shan LI Yu Qian HE Li ZHAO Wen Hua ZHANG Jian 2019Biomedical and Environmental Sciences2019,32,8:45
4Holocene vegetational and climatic variation in westerly-dominated areas of Central Asia inferred from the Sayram Lake in northern Xinjiang,China显示文摘Changes in the vegetation and climate of the westerly-dominated areas in Central Asia during the Holocene were interpreted using pollen-assemblages and charcoal data from a 300-cm-long sediment core of the Sayram Lake,northern Xinjiang.Accele-rator Mass Spectrometry(AMS) radiocarbon dating methods were applied to bulk organic matter of the samples.Artemisia spp./Chenopodiaceae ratios and results from principal component analysis were used to infer that the lake basin was dominated by desert vegetation before ca.9.6 cal.ka BP,which suggests a warm and dry climate in the early Holocene.Desert steppe/steppe expanded during 9.6-5.5 cal.ka BP,indicating a remarkable increase both in the precipitation and temperature during the mid-Holocene.Desert vegetation dominated between 6.5 and 5.5 cal.ka BP,marking an extreme warmer and drier interval.The steppe/meadow steppe recovered,and temperatures decreased from 5.5 cal.ka BP in the late Holocene,as indicated by the increased abundance of Artemisia and the development of meadows.Holocene temperatures and moisture variations in the Sayram Lake areas were similar to those of adjacent areas.This consistency implies that solar radiation was the main driving factor for regional temperature changes,and that the effect of temperature variations was significant on regional changes in humidity.The evolution of climate and environment in the Sayram Lake areas,which were characterized as dry in the early Holocene and relatively humid in the middle-late Holocene,are clearly different from those in monsoonal areas.Dry conditions in the early Holocene in the Sayram Lake areas were closely related to decreased water vapor advection.These conditions were a result of reduced westerly wind speeds and less evaporation upstream,which in turn were caused by seasonal changes in solar radiation superimposed by strong evaporation following warming and drying local climate.JIANG QingFeng JI JunFeng SHEN Ji Ryo MATSUMOTO TONG GuoBang QIAN Peng REN XueMei YAN DeZhi 2013Science China Earth Sciences2013,56,3:32
55-Hydroxymethylcytosine signatures in circulating cell-free DNA as diagnostic biomarkers for human cancers显示文摘象 5-methylcytosine (5mC ) 和 5-hydroxymethylcytosine (5hmC ) 那样的 DNA 修正是知道在哺乳动物影响全球基因表示的 epigenetic 标记。在人的染色体,与基因表示的靠近的关联和高化学的稳定性给他们的流行,这些 DNA epigenetic 标记能为癌症用作理想的 biomarkers 诊断。利用一种高度敏感、选择的化学标记技术,我们这里报导在传播没有房间的 DNA ( cfDNA )并且在从最近与 colorectal 诊断的 260 个病人的一个队收集的配对的肿瘤和邻近的纸巾的 genomic DNA ( gDNA )的 5hmC 的染色体宽的介绍,胃,胰腺,从 90 个健康个人的肝或甲状腺癌症和正常纸巾。5hmC 主要在与开的染色质和容许的 histone 修正重合的 transcriptionally 活跃的区域被散布。柔韧的联系癌症的 5hmC 签名在 cfDNA 被识别为特定的癌症类型是特征的。传播 cfDNA 的 5hmC 底 biomarkers colorectal 和胃的癌症是高度预兆的并且比常规 biomarkers 优异并且比得上从织物活体检视的 5hmC biomarkers。因此,这新策略能从血样品的分析为癌症的诊断和预后导致有效、最低限度地侵略的方法的发展。Wenshuai Li Xu Zhang Xingyu Lu Lei You Yanqun Song Zhongguang Luo Jun Zhang Ji Nie Wanwei Zheng Diannan Xu Yaping Wang Yuanqiang Dong Shulin Yu Jun Hong Jianping Shi Hankun Hao Fen Luo Luchun Hua Peng Wang Xiaoping Qian Fang Yuan Lianhuan Wei Ming Cui Taiping Zhang Quan Liao Menghua Dai Ziwen Liu Ge Chen Katherine Meckel Sarbani Adhikari Guifang Jia Marc B Bissonnette Xinxiang Zhang Yupei Zhao Wei Zhang Chuan He Jie Liu 2017Cell Research2017,27,10:30
6Chemerin and apelin are positively correlated with inflammation in obese type 2 diabetic patients显示文摘YU Shan ZHANG Ying LI Mei-zhen XU Hua WANG Qian SONG Jun LIN Peng ZHANG Li LIU Qian HUANG Qing-xian WANG Kun HOU Wei-kai 2012Chinese Medical Journal2012,,19:27
7Safety risk management of underground engineering in China:Progress, challenges and strategies显示文摘Underground construction in China is featured by large scale, high speed, long construction period,complex operation and frustrating situations regarding project safety. Various accidents have been reported from time to time, resulting in serious social impact and huge economic loss. This paper presents the main progress in the safety risk management of underground engineering in China over the last decade, i.e.(1) establishment of laws and regulations for safety risk management of underground engineering,(2) implementation of the safety risk management plan,(3) establishment of decision support system for risk management and early-warning based on information technology, and(4) strengthening the study on safety risk management, prediction and prevention. Based on the analysis of the typical accidents in China in the last decade, the new challenges in the safety risk management for underground engineering are identified as follows:(1) control of unsafe human behaviors;(2) technological innovation in safety risk management; and(3) design of safety risk management regulations. Finally, the strategies for safety risk management of underground engineering in China are proposed in six aspects, i.e. the safety risk management system and policy, law, administration, economy, education and technology.Qihu Qian Peng Lin 2016Journal of Rock Mechanics and Geotechnical Engineering2016,8,4:28
8Rapid quantification of semen hepatitis B virus DNA by real-time polymerase chain reaction显示文摘AIM: To examine the sensitivity and accuracy of real-time polymerase chain reaction (PCR) for the quantification of hepatitis B virus (HBV) DNA in semen.METHODS: Hepatitis B viral DNA was isolated from HBV carriers' semen and sera using phenol extraction method and QTAamp DNA blood mini kit (Qiagen, Germany). HBV DNA was detected by conventional PCR and quantified by TaqMan technology-based real-time PCR (quantitative polymerase chain reaction (qPCR)). The detection threshold was 200 copies of HBV DNA for conventional PCR and 10 copies of HBV DNA for real time PCR per reaction.RESULTS: Both methods of phenol extraction and QIAamp DNA blood mini kit were suitable for isolating HBV DNA from semen. The value of the detection thresholds was 500 copies of HBV DNA per mL in the semen. The viral loads were 7.5×107 and 1.67×107 copies of HBV DNA per mL in two HBV infected patients' sera, while 2.L4×105 and 3.02×105 copies of HBV DNA per mL in the semen.CONCLUSION: Real-time PCR is a more sensitive and accurate method to detect and quantify HBV DNA in the semen.Wei-Ping Qian Yue-Qiu Tan Ying Chen Ying Peng Zhi Li Guang-Xiu Lu Made C. Liu Hsiang-Fu Kung Ming-Ling He Li-Ka Shing 2005World Journal of Gastroenterology2005,11,34:25
9Chronic Hepatitis B Infection with Low Level Viremia Correlates with the Progression of the Liver Disease显示文摘Background and Aims:Currently,insufficient clinical data are available to address whether low-level viremia(LLV)observed during antiviral treatment will adversely affect the clinical outcome or whether treatment strategies should be altered if LLV occurs.This study compared the clinical out-comes of patients with a maintained virological response(MVR)and patients who experienced LLV and their treatment strategies.Methods:A retrospective cohort of 674 patients with chronic hepatitis B virus(HBV)infection who received antiviral treatment for more than 12 months was analyzed for the development of end-stage liver disease and treatment strategies during the follow-up period.End-stage liver disease included decompensated liver cirrhosis and hepatocellular carcinoma(HCC).Results:During a median 42-month follow-up,end-stage liver disease developed more frequently in patients who experienced LLV than in those who experienced MVR(7.73%and 15.85%vs.0.77%and 5.52%at 5 and 10 years,respectively;p=0.000).The trend was consistent after propensity score matching.In the high-risk group of four HCC risk models,LLV patients had a higher risk of HCC development(p<0.05).By Cox proportional hazard model analysis,LLV was an independent risk factor for end-stage liver disease and HCC(hazard ratio[HR]=6.280,confidence interval[CI]=2.081-18.951,p=0.001;HR=5.108,CI=1.392-18.737,respectively;p=0.014).Patients achieved a lower rate of end-stage liver disease by adjusting treatment compared to continuing the original treatment once LLV occurred(p<0.05).Conclusions:LLV is an independent risk factor for end-stage liver disease and HCC,and treatment adjustments can be considered.Qian Zhang Hong Peng Xiaoqing Liu Huimin Wang Jinjie Du Xinhua Luo Hong Ren Peng Hu 2021Journal of Clinical and Translational Hepatology2021,9,6:25
10Progresses on microwave remote sensing of land surface parameters显示文摘Highly accurate observations at various scales on the land surface are urgently needed for the studies of many areas,such as hydrology,meteorology,and agriculture.With the rapid development of remote sensing techniques,remote sensing has had the capacity of monitoring many factors of the Earth's land surface.Especially,the space-borne microwave remote sensing systems have been widely used in the quantitative monitoring of global snow,soil moisture,and vegetation parameters with their all-weather,all-time observation capabilities and their sensitivities to the characteristics of land surface factors.Based on the electromagnetic theories and microwave radiative transfer equations,researchers have achieved great successes in the microwave remote sensing studies for different sensors in recent years.This article has systematically reviewed the progresses on five research areas including microwave theoretical modeling,microwave inversion on soil moisture,snow,vegetation and land surface temperatures.Through the further enrichment of remote sensing datasets and the development of remote sensing theories and inversion techniques,remote sensing including microwave remote sensing will play a more important role in the studies and applications of the Earth systems.SHI JianCheng DU Yang DU JinYang JIANG LingMei CHAI LinNa MAO KeBiao XU Peng NI WenJian XIONG Chuan LIU Qiang LIU ChenZhou GUO Peng CUI Qian LI YunQing CHEN Jing WANG AnQi LUO HeJia WANG YinHui 2012Science China Earth Sciences2012,55,7:24
11Identification of anti-asthmatic compounds in Pericarpium citri reticulatae and evaluation of their synergistic effects显示文摘Qian SHI Ze LIU Yang YANG Peng GENG Yuan-yuan ZHU Qi ZHANG Fang BAI Gang BAI 2009Acta Pharmacologica Sinica2009,30,5:23
12LSCHL4 from Japonica Cultivar, Which Is Allelic to NAL 1, Increases Yield of Indica Super Rice 93-11显示文摘在米饭的高产量的基本房屋是改进叶光合的效率和坐标 sourcesink relationshipin 米饭植物。与词法特点和米饭的叶绿素内容有关的量的特点 loci ( QTL )在出发到成熟的阶段离开 weredetected ,并且与旗帜叶形状和叶绿素内容有关的主要 QTL ( qLSCHL4 )在 recombinant 在两个阶段被检测生来的线构造了 usingthe indica 米饭栽培变种 93-11 和装饰用的梨树米饭栽培变种 Nipponbare 。基于地图的克隆和表示分析证明 LSCHL4 对 NAL1 突变而产生之遗传,基因以前在米饭的狭窄的叶异种报导了。与从 Nipponbare 带 LSCHL4 的向量转变的 Overexpression 线和 93-11 (NIL-9311 ) 的一根 near-isogenic 线显著地增加了叶叶绿素内容,扩大旗帜叶尺寸,和改进圆锥花序类型。NIL-9311 的 averageyield 比 93-11 的高是 18.70% 。这些结果显示 LSCHL4 有多种的功能。探索并且节节上升更产量很高的等位基因类似于为超级米饭繁殖的 LSCHL4 提供一个有效方法在提起米饭产量完成新突破并且产生解决全球食物 safety.Key 词的问题的新 ideasfor:Guang-Heng Zhang Shu-Yu Li Li Wang Wei-Jun Ye Da-Li Zeng Yu-Chun Rao You-Lin Peng Jiang Hu Yao-Long Yang Jie Xu De-Yong Ren Zhen-Yu Gao Li Zhu Guo-Jun Dong Xing-Ming Hu Mei-Xian Yan Long-Biao Guo Chuan-You Li Qian Qian 2014Molecular Plant2014,7,8:23
13Inhibitory effects of antisense RNA of HAb18G/CD147 on invasion of hepatocellular carcinoma cells in vitro显示文摘AIM: To study the inhibitory effects of antisense RNA of HAb18G/CD147 on invasion of hepatocellular carcinoma (HCC) cells in vitro.METHODS: Antisense RNA of HAb18G/CD147 vector PCIasHAb18G was constructed by reversely inserting HAb18G/CD147 cDNA to eukaryotic expression vector PCI-neo. The HCC cell line HHCC was transfected by PCI-asHAb18G via cation liposome. Expression of HAb18G/CD147 of transfected cells selected by G418 (geneticin) was observed by immunohistochemical SP staining and FACS (fluorescence activated cell sorting). Gelatin zymography was used to determine the effect of PCI-asHAb18G on reducing secretions of MMP2 and MMP-9 of the transfected cells. Boyden chamber was employed to test the invasion of HCC cells in vitro.RESULTS: The construction of antisense RNA vector PCIasHAb18G was verified correct by partial nucleotide sequencing and restricted endonuclease digestion. The expression of HAb18G/CD147 in transfected HHCC was inhibited by PCI-asHAb18G. Secretions of MMP-2 and MMP9 of transfected HHCC were reduced and the invasion of transfected HHCC was inhibited compared to HHCC,respectively.CONCLUSION: Invasion of HCC cells can be inhibited by antisense RNA of HAb18G/CD147. HAb18G/CD147 may be used as a potential target of drugs for anti-invasion and metastasis of HCC.Yu Li Peng Shang Ai-Rong Qian Li Wang Yong Yang Zhi-Nan Chen, Department of Cell Biology, Fourth Military Medical University, Xi’an 710032, Shaanxi Province, China 2003World Journal of Gastroenterology2003,9,10:22
14Serum cystatin C concentration as an independent marker for hypertensive left ventricular hypertrophy显示文摘Background Serum cystatin C levels can be used to predict morbidity and mortality in patients with cardiovascular disease. However, the clinical relevance of serum cystatin C levels in patients with hypertensive left ventricular hypertrophy (LVH) has rarely been investigated. We designed the present study to investigate whether serum cystatin C levels are associated with cardiac structural and functional alterations in hypertensive patients. Methods We enrolled 823 hypertensive patients and classified them into two groups:those with LVH (n=287) and those without LVH (n=536). All patients underwent echocardiography and serum cystatin C testing. We analyzed the relationship be-tween serum cystatin C levels and LVH. Results Serum cystatin C levels were higher in hypertensive patients with LVH than in those without LVH (P<0.05). Using linear correlation analysis, we found a positive correlation between serum cystatin C levels and interven-tricular septal thickness (r=0.247, P<0.01), posterior wall thickness (r=0.216, P<0.01), and left ventricular weight index (r=0.347, P<0.01). When analyzed by multiple linear regression, the positive correlations remained between serum cystatin C and interventricular septal thickness (β=0.167, P<0.05), posterior wall thickness (β=0.187, P<0.05), and left ventricular weight index (β=0.245, P<0.01). Con-clusion Serum cystatin C concentration is an independent marker for hypertensive LVH.Xin Li Hang Zhu Peng Li Qian Xin Jie Liu Wei Zhang You-Hong Xing Hao Xue 2013Journal of Geriatric Cardiology2013,10,3:21
15Genome-Wide Association Studies of Image Traits Reveal Genetic Architecture of Drought Resistance in Rice显示文摘理解植物怎么对干旱作出回应能有益于繁殖的干旱抵抗(医生) 。用一台非破坏性的 phenotyping 设备,为 507 米饭就职的 51 个基于图象的特点(i 特点) 被提取。这些 i 特点能被用来监视干旱回答 ? 并且高评估医生可遗传性和这些特点的大变化在自然人口在干旱应力下面被观察。染色体宽的协会研究(GWAS )?i 特点和传统的医生特点识别了 470 协会 loci,某包含知道医生相关的基因。这 470 loci, 443 loci (94%) 用 i 特点被识别, 437 loci (93%) 与以前报导的医生相关的量的特点 loci,和 313 loci (66.6%)co 局部性被 GWAS reproducibly 在不同的年里识别。协会网络,基于 GWAS 建立了结果,揭示中心 i 特点和中心 loci。这表明把的可行性和必要性复杂医生特点进可继承、简单的 i 特点。作为原则的证明,我们说明了这条综合途径的力量以前识别 unreported 医生相关的基因。OsPP15 与中心 i 特点被联系,并且它在医生的角色被基因转变实验证实。而且, i 特点能被用于医生连接分析,并且 69 个 i 特点地点协会被 recombinant 的 GWAS 和连接分析识别生来的线人口。最后,我们证实了 i 特点的关联在这个领域里搀。我们的学习为医生为原因的基因的基因解剖和发现提供一条有希望的新奇途径。Zilong Guo Wanneng Yang Yu Chang Xiaosong Ma Haifu Tu Fang Xiong Ni Jiang Hui Feng Chenglong Huang Peng Yang Hu Zhao Guoxing Chen Hongyan Liu Lijun Luo Honghong Hu Qian Liu Lizhong Xiong 2018Molecular Plant2018,11,6:21
16Epidemiological characteristics of thyroid nodules and risk factors for malignant nodules: a retrospective study from 6 304 surgical cases显示文摘Huan Qin Wang Kun Lou Fuchen Zhang Li Huang Qingxian Han Yunfeng Sun Hancheng Zhu Lei Lin Peng Song Jun Liu Fuqiang Wang Qian Hou Weikai 2014Chinese Medical Journal2014,,12:20
17A Model of Electro-thermal Hybrid Energy Storage System for Autonomous Control Capability Enhancement of Multi-energy Microgrid显示文摘In view of the problem of low self-service capability of the microgrid due to the high operating cost and low capacity of the traditional battery energy storage system.In this paper,an electrothermal hybrid energy storage model based on electricity,hydrogen and thermal energy conversion and storage is introduced,and a microgrid autonomous operational strategy is proposed.First,the addition of the power to hydrogen transfer equipment in the traditional combined heat and power(TCHP)system without battery energy storage is studied,and a micro gas turbine,electric to hydrogen transfer equipment and electric boiler based electrothermal energy storage system(ETSS)model is established.Aiming at the lowest comprehen-sive operating cost of multiple energy sources in a microgrid and maximizing the consumption of curtailed wind,the multi-objective scheduling model of an electrothermal hybrid energy storage system is established,then the multi-energy autonomous operational strategy of a microgrid is proposed.Lastly,the simulation of a multi-energy microgrid in Northeast China is taken as an example.The results of the simulation showed that compared with a combined heat and power microgrid system considering conventiona battery energy storage,a multi-energy microgrid system using electrothermal hybrid energy storage has better flexibility and economy,and can improve wind power accommodation.Yun Teng Peng Sun Qian Hui Yan Li Zhe Chen 2019CSEE Journal of Power and Energy Systems2019,5,4:20
18Salivary exosomal PSMA7: a promising biomarker of inflammatory bowel disease显示文摘煽动性的肠疾病(IBD ) 是包括中国在亚洲增加的流行的世界范围的肠的免疫者不正常的疾病。它是有未知原因的胃肠的道的长期的疾病。Exosomes 是在各种各样的身体液体的小泡。他们有 40-120 的直径 ? nm,并且他们的功能之一是各种各样的物质的长途的转移。在这研究,我们与 IBD 并且在健康控制在病人调查了唾液的 exosomes 的内容与 IBD 在病人探索新 biomarker。在这研究,整个口水与 IBD 从病人被获得(ulcerative 大肠炎(UC ) , n ?=? 37;Crohns 疾病(CD ) , n ?=? 11 ) 并且显然健康的个人(HC, n ?=? 10 ) 。唾液的 exosomes 从样品被提取,并且在 exosomes 以内的蛋白质被液体用色层法分离团分光计(LC-MS/MS ) 识别。结果证明超过 2000 蛋白质与 IBD 从病人在唾液的 exosomes 被检测。通过基因本体论分析,我们发现(PSMA7 ) proteasome 子单元 alpha 类型 7 与 IBD 和健康控制显示出病人之间的特别显著的差别,因为它的表达式水平在 CD 和 UC 组是高得多的。这 exosomal 蛋白质与 proteasome 活动和煽动性的回答有关。我们因此断定在这研究,唾液的 exosomal PSMA7 在在从有 IBD 的题目的唾液的 exosomes 的高水平是在场的。免除病人 colonoscopy 的疼痛能是很有希望的 biomarker。Xiaowen Zheng Feng Chen Qian Zhang Yulan Liu Peng You Shan Sun Jiuxiang Lin Ning Chen 2017Protein & Cell2017,8,9:19
19Exogenous NADPH ameliorates myocardial ischemia–reperfusion injury in rats through activating AMPK/mTOR pathway显示文摘Our previous study shows that nicotinamide adenine dinucleotide phosphate(NADPH)plays an important role in protecting against cerebral ischemia injury.In this study we investigated whether NADPH exerted cardioprotection against myocardial ischemia/reperfusion(I/R)injury.To induce myocardial I/R injury,rats were subjected to ligation of the left anterior descending branch of coronary artery for 30 min followed by reperfusion for 2 h.At the onset of reperfusion,NADPH(4,8,16 mg·kg?1·d?1,iv)was administered to the rats.We found that NADPH concentrations in plasma and heart were signi?cantly increased at 4 h after intravenous administration.Exogenous NADPH(8?16 mg/kg)signi?cantly decreased myocardial infarct size and reduced serum levels of lactate dehydrogenase(LDH)and cardiac troponin I(cTn-I).Exogenous NADPH signi?cantly decreased the apoptotic rate of cardiomyocytes,and reduced the cleavage of PARP and caspase-3.In addition,exogenous NADPH reduced mitochondrial vacuolation and increased mitochondrial membrane protein COXIV and TOM20,decreased BNIP3L and increased Bcl-2 to protect mitochondrial function.We conducted in vitro experiments in neonatal rat cardiomyocytes(NRCM)subjected to oxygen–glucose deprivation/restoration(OGD/R).Pretreatment with NADPH(60,500 nM)signi?cantly rescued the cell viability and inhibited OGD/R-induced apoptosis.Pretreatment with NADPH signi?cantly increased the phosphorylation of AMPK and downregulated the phosphorylation of mTOR in OGD/R-treated NRCM.Compound C,an AMPK inhibitor,abolished NADPH-induced AMPK phosphorylation and cardioprotection in OGD/R-treated NRCM.In conclusion,exogenous NADPH exerts cardioprotection against myocardial I/R injury through the activation of AMPK/mTOR pathway and inhibiting mitochondrial damage and cardiomyocyte apoptosis.NADPH may be a potential candidate for the prevention and treatment of myocardial ischemic diseases.Jiang Zhu Yi-fei Wang Xiao-ming Chai Ke Qian Ling-wei Zhang Peng Peng Pei-min Chen Jian-fang Cao Zheng-hong Qin Rui Sheng Hong Xie 2020Acta Pharmacologica Sinica2020,41,4:19
20p53 upregulated by HIF-la promotes hypoxiainduced G2/M arrest and renal fibrosis in vitro and in vivo显示文摘Hypoxia plays an important role in the genesis and progression of renal fibrosis.The underlying mechanisms, however, have not been sufficiently elucidated. We examined the role of p53 in hypoxia-induced renal fibrosis in cell culture (human and rat renal tubular epithelial cells) and a mouse unilateral ureteral obstruction (UUO) model. Cell cycle of tubular cells was determined by flow cytometry, and the expression of profibrogenic factors was determined by RT-PCR, immunohistochemistry, and western blotting. Chromatin immunoprecipitation and luciferase reporter experiments were performed to explore the effect of HIF-lα on p53 expression. We showed that, in hypoxic tubular cells, p53 upregulation suppressed the expression of CDK1 and cyclins Bl and DI, leading to cell cycle (G2/M) arrest (or delay) and higher expression of TGF-β, CTGF, collagens, and fibronectin. p53 suppression by siRNA or by a specific p53 inhibitor (PIF-α) triggered opposite effects preventing the G2/M arrest and profibrotic changes. In vivo experiments in the UUO model revealed similar antifibrotic results following intraperitoneal administration of PIF-α(2.2 mg/kg). Using gain-of-function, loss-of-function, and luciferase assays, we further identified an HRE3 region on the p53 promoter as the HIF-lα-binding site. The HIF-la-HRE3 binding resulted in a sharp transcriptional activation of p53. Collectively, we show the presence of a hypoxia-activated, p53-responsive profibrogenic pathway in the kidney. During hypoxia, p53 upregulation induced by HIF-la suppresses cell cycle progression, leading to the accumulation of G2/M cells, and activates profibrotic TGF-β and CTGF-mediated signaling pathways, causing extracellular matrix production and renal fibrosis.Limin Liu Peng Zhang Ming Bai Lijie He Lei Zhang Ting Liu Zhen Yang Menglu Duan Minna Liu Baojian Liu Rui Du Qi Qian Shiren Sun 2019Journal of Molecular Cell Biology2019,11,5:18
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