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1Quantitative analysis of vascular endothelial growth factor, microvascular density and their clinicopathologic features in human hepatocellular carcinoma显示文摘BACKGROUND: Angiogenesis is known to be essential to the survival, growth, invasion, and metastasis of tumor cells. Vascular endothelial growth factor (VEGF) are an important angiogenic factor regulating tumor angiogenesis, but its significance and tumor pathologic features are un- clear in hepatocellular carcinoma (HCC). In the present study, we analyzed expression of tissue VEGF, alteration of microvascular density (MVD) in microvessel angiogenesis, development and metastasis of HCC, and level of serum VEGF in differential diagnosis of benign and malignant liv- er diseases. METHODS: Tumor specimens were prospectively collected from HCC patients undergoing resection. Total RNAs were extracted and the expression levels were detected from different parts of HCC tissues. The cellular distributions of VEGF and MVD of liver tumors and their paracancerous and distal cancerous tissues were investigated by streptavi- din peroxidase (S-P) immunohistochemistry, respectively. The VEGF levels of circulating blood and hepatoma tissues were measured by enzyme-linked immunosorbent assay. RESULTS: The incidence of VEGF expression was 63.9% in HCCs (23/36 cases), 78.3% in non-encapsulated HCCs (18/23), and 90.9% in HCCs with extrahepatic metastasis (10/11), respectively. The VEGF expression was tightly correlated with MVD (P <0.01). The MVD in HCC with metastasis, low differentiation or non-encapsulation was significantly higher than that in HCC with intact capsule, high differentiation, or no metastasis. No significant diffe- rence was found between VEGF, MVD, tumor size, and hepatitis virus infection. The level of total RNA in HCC tis- sues was significantly lower but the VEGF level significantly higher than those in paracancerous or distal cancerous ones (P<0.01). The abnormal expression levels of VEGF in sera of HCC patients were directly correlated with the me- tastasis and recurrence of tumors. CONCLUSION: The high expression of VEGF and abnor- mality of tissue MVD are useful predictors for vascular inva- sion and metastasis of liver tumors.Deng-Fu Yao, Xin-Hua Wu, Yong Zhu, Gong-Sheng Shi, Zhi-Zhen Dong, Deng-Bing Yao, Wei Wu, Li-Wei Qiu and Xian-Yong Meng Nantong, China Research Center of Clinical Molecular Biology , Department of Pathology and Department of Gastroenterology , Affiliated Hos- pital of Nantong University Department of Diagnostics , and Institute of Neurosciences , Nantong University Nantong 226001, China 2005Hepatobiliary & Pancreatic Diseases International2005,4,2:81
2Apoptosis and its relationship with cell proliferation,p53,Waf1p21,bcl-2 and c-mycin esophageal carcinogenesis studied with a high-risk population in northern China显示文摘Apoptosisanditsrelationshipwithcelproliferation,p53,Waf1p21,bcl2andcmycinesophagealcarcinogenesisstudiedwithahighriskpopul...WANG LiDong1, ZHOU Qi1, WEI JunPing1, YANG WanCai1, ZHAO Xin1, WANG LiXia1, ZOU Jian Xiang1, GAO ShanShan1, LI YongXin1 and YANG C.S.2Keywords esophageal neoplasms apoptosis precancerous lesions Waf1 p21 gene p53 1998World Journal of Gastroenterology1998,4,4:295
3A Robust CRISPR/Cas9 System for Convenient, High-Efficiency Multiplex Genome Editing in Monocot and Dicot Plants显示文摘CRISPR/Cas9 染色体指向系统被用于许多种类。然而,为植物报导的 mostCRISPR/Cas9 系统能仅仅修改一个或一些指向地点。这里,我们报导一个柔韧的 CRISPR/Cas9 向量系统,利用植物 codon 优化了 Cas9 基因,为方便、高效率的复合染色体在 monocot 和 dicot 植物编辑。我们设计了基于 PCR 的过程很快产生多重 sgRNA 表达式盒子,它能在一个轮由金门结扎或吉布森汇编克隆被装配进二进制 CRISPR/Cas9 向量。与这个系统,我们与 85.4% 变化评估的一般水准在米饭编辑了 46 个目标地点,主要在 biallelic 和同型结合的地位。我们推想在米饭的大约 16% 同型结合的变化通过相应基于再结合的修理跟随的非相应的加入结束的机制被产生。我们也获得了一致 biallelic,在 Arabidopsis T 1 植物的异质接合、同型结合、妄想的变化。在米饭和 Arabidopsis 的指向的变化是可继承的。我们在 T 0 米饭和 T 1 由同时的指向的 Arabidopsis 植物多重(多达八) 一个基因家庭,在一条 biosynthetic 小径的多重基因,或在单个基因的多重地点的成员。这个系统为为基本研究和基因改进在植物学习多重基因和基因家庭的功能提供了一个万用的工具箱。Xingliang Ma Qunyu Zhang Qinlong Zhu Wei Liu Yan Chen Rong Qiu Bin Wang Zhongfang Yang Heying Li Yuru Lin Yongyao Xie Rongxin Shen Shuifu Chen Zhi Wang Yuanling Chen Jingxin Guo Letian Chen Xiucai Zhao Zhicheng Dong Yao-Guang Liu 2015Molecular Plant2015,8,8:272
4A complete sequence and comparative analysis of a SARS-associated virus(Isolate BJ01)显示文摘The genome sequence of the Severe Acute Respiratory Syndrome (SARS)-associated virus provides essential information for the identification of pathogen(s), exploration of etiology and evolution, interpretation of transmission and pathogenesis, development of diagnostics, prevention by future vaccination, and treatment by developing new drugs. We report the complete genome sequence and comparative analysis of an isolate (BJ01) of the coronavirus that has been recognized as a pathogen for SARS. The genome is 29725 nt in size and has 11 ORFs (Open Reading Frames). It is composed of a stable region encoding an RNA-dependent RNA polymerase (composed of 2 ORFs) and a variable region representing 4 CDSs (coding sequences) for viral structural genes (the S, E, M, N proteins) and 5 PUPs (putative uncharacterized proteins). Its gene order is identical to that of other known coronaviruses. The sequence alignment with all known RNA viruses places this virus as a member in the family of Coronaviridae. Thirty putative substitutions have been identified by comparative analysis of the 5 SARS- associated virus genome sequences in GenBank. Fifteen of them lead to possible amino acid changes (non-synonymous mutations) in the proteins. Three amino acid changes, with predicted alteration of physical and chemical features, have been detected in the S protein that is postulated to beinvolved in the immunoreactions between the virus and its host. Two amino acid changes have been detected in the Mprotein, which could be related to viral envelope formation. Phylogenetic analysis suggests the possibility of non-human origin of the SARS-associated viruses but provides noevidence that they are man-made. Further efforts should focus on identifying the etiology of the SARS-associated virus and ruling out conclusively the existence of otherpossible SARS-related pathogen(s).QIN E'de ZHU Qingyu YU Man FAN Baochang CHANG Guohui SI Bingyin YANG Bao PENG Wenming JIANG Tao LIU Bohua DENG Yongqiang LIU Hong ZHANG Yu WANG Cui LI Yuquan GAN Yonghua LI Xiaoyu L Fushuang TAN Gang CAO Wuchun, YANG Ruifu Institute of Microbiology and Epidemiology, Chinese Academy of Military Medical Sciences, Beijing 100071, China WANG Jian, LI Wei, XU Zuyuan, LI Yan, WU Qingfa, LIN Wei, CHEN Weijun, TANG Lin, DENG Yajun, HAN Yujun, LI Changfeng, LEI Meng, LI Guoqing, LI Wenjie, L Hong, SHI Jianping, TONG Zongzhong, ZHANG Feng, LI Songgang, LIU Bin, LIU Siqi, DONG Wei, WANG Jun, Gane K-S Wong, YU Jun & YANG Huanming* Beijing Genomics Institute, Chinese Academy of Sciences, Beijing 101300 National Center for Genome Information, Beijing 101300, China 2003Chinese Science Bulletin2003,48,10:121
5Acute pancreatitis:Etiology and common pathogenesis显示文摘Acute pancreatitis is an inflammatory disease of the pancreas.The etiology and pathogenesis of acute pancreatitis have been intensively investigated for centuries worldwide.Many causes of acute pancreatitis have been discovered,but the pathogenetic theories are controversial.The most common cause of acute pancreatitis is gallstone impacting the distal common bile-pancreatic duct.The majority ofinvestigators accept that the main factors for acute billiary pancreatitis are pancreatic hyperstimulation and bile-pancreatic duct obstruction which increase pancreatic duct pressure and active trypsin reflux.Acute pancreatitis occurs when intracellular protective mechanisms to prevent trypsinogen activation or reduce trypsin activity are overwhelmed.However,little is known about the other acute pancreatitis.We hypothesize that acute biliary pancreatitis and other causes of acute pancreatitis possess a common pathogenesis.Pancreatic hyperstimulation and pancreatic duct obstruction increase pancreatic duct pressure,active trypsin reflux,and subsequent unregulated activation of trypsin within pancreatic acinar cells.Enzyme activation within the pancreas leads to auto-digestion of the gland and local inflammation.Once the hypothesis is confirmed,traditional therapeutic strategies against acute pancreatitis may be improved.Decompression of pancreatic duct pressure should be advocated in the treatment of acute pancreatitits which may greatly improve its outcome.Guo-Jun Wang Chun-Fang Gao Dong Wei Cun Wang Si-Qin Ding 2009World Journal of Gastroenterology2009,15,12:62
6Surface Rupture and Co-seismic Displacement Produced by the Ms 8.0 Wenchuan Earthquake of May ^(12)th,2008,Sichuan,China:Eastwards Growth of the Qinghai-Tibet Plateau显示文摘女士 8 的地震给 Wenchuan 以县,西方的四川,中国,在 2008 年 5 月 12 日并且导致了长表面破裂(> 300 km ) 。关于表面破裂的第一手的观察在 Yingxiu, Beichuan 和 Qingchuan 的最糟点击的区域由地震生产了,查明地震的原因的结构在 Longmenshan 构造的带的中央差错地区。沿着 Yingxiu-Beichuan 破裂地区活动范围 2.5-4 m 的单个差错的平均 co 地震的垂直排水量和越过中央、正面的 Longmenshan 差错的累积垂直排水量系上带子是大约 56 m。表面破裂力量从 Beichuan 的北方被归结为 Qingchuan 县和表演 23 m 右罢工滑倒部件。Wenchuan 指责戳的地震是在印度、欧亚的大陆的连续集中的行动下面的西藏的高原的东方生长的表明。DONG Shuwen ZHANG Yueqiao WU Zhenhan YANG Non MA Yinsheng SHI Wei CHEN Zhengle LONG Changxin AN Meijian 2008Acta Geologica Sinica(English Edition)2008,82,5:59
7Expression and alteration of insulin-like growth factor II-messenger RNA in hepatoma tissues and peripheral blood of patients with hepatocellular carcinoma显示文摘AIM: To investigate the clinical values of serum free insulin-like growth factor Ⅱ (IGF-Ⅱ) levels and IGF-Ⅱ mRNA in hepatocellular carcinoma (HCC) tissues and peripheral blood for diagnosis of HCC and monitoring of extrahepatic metastasis.METHODS: Total RNAs were extracted from HCC tissues or peripheral blood mononuclear cells from patients with HCC, liver diseases devoid of cancer, non-hepatic tumors,and healthy controls, respectively. IGF-Ⅱ cDNAs were synthesized through random primers and reversetranscriptase, amplified by polymerase chain reaction (PCR), and confirmed by DNA sequencing analysis. Serum free IGF-Ⅱ levels in patients with different liver diseases were analyzed by an enzyme-linked immunosorbent assay.RESULTS: The amplified fragments of IGF-Ⅱ mRNA by RT-PCR were identical to originally designed ones with a size of 170 bp and confirmed by sequencing analysis.The dilution experiments revealed that the lowest sensitivity of our system was 2 ng/L of total RNA. The positive frequencies of IGF-Ⅱ mRNA were 100% in HCC tissues,53.3% in para-cancerous tissues, and 0% in non-cancerous tissues, respectively. The serum free IGF-Ⅱ levels were significantly higher in HCC than those in chronic hepatitis or liver cirrhosis. The positive frequency of circulating IGF-Ⅱ mRNA was 34.2% in HCC, no amplified fragment was found in other liver diseases, extrahepatic tumors,and normal controls, respectively. The circulating IGF-Ⅱ mRNA correlated with the stage of HCC, and its positive rate was 100% in HCC with extrahepatic metastasis and 35.5% in HCC with AFP-negative. No significant correlation was found between tumor sizes and circulating IGF-Ⅱ mRNA fragment.CONCLUSION: The abnormal expressions of free IGF-Ⅱ and IGF-Ⅱ mRNA are useful tumor markers for HCC diagnosis, differentiation of extrahepatic metastasis and monitoring postoperative recurrence.Zhi-Zhen Dong Deng-Fu Yao Deng-Bing Yao Xin-Hua Wu Wei Wu Li-Wei Qiu Dao-Rong Jiang Jian-Hua Zhu Xian-Yong Meng 2005World Journal of Gastroenterology2005,11,30:45
8Analysis of Heavy Metal Sources for Vegetable Soils from Shandong Province, China显示文摘Heavy metal pollution in agricultural soils has serious negative influence on human health. Concentrations of Cd, Hg, As, Pb, Cr, Cu, Zn, and Ni in top soils (0-20 cm) of greenhouses and farmlands from four main vegetable production areas Shouguang, Laiyang, Jinxiang, and Zhangqiu in Shandong Province, one of the most rapidly developing regions in China, were measured in this study. Shouguang is mainly occupied by greenhouse vegetables and the other three areas are mainly open field culture. Total of 149 soil samples were collected. The average concentrations of the eight heavy metals of the tested 149 soil samples were all below the threshold values according to 'Farmland environmental quality evaluation standards for edible agricultural products (HJ332-2006)'of China. However, most of the studied heavy metals were present at higher concentrations than those of the natural background levels in local agricultural soils. Among the total 149 soil samples, 22 samples were contaminated by Cd, Ni, Cu, or Hg. Comparisons showed that the main pollution element in greenhouse vegetable soils was Cd, while that of open field vegetable soils was Cu. The results of principal components analysis (PCA) suggested that concentrations of Cr, As, and Ni were mainly controlled by parent rocks; Hg and Pb were affected by anthropogenic activities such as vehicle and industrial fumes and waste water irrigation. Meanwhile, concentrations of Cd, Cu, and Zn were affected mainly by the use of agrochemicals. Most of the heavy metals were positively correlated with each other in concentration. Appropriate measures should be taken to effectively control heavy metal levels in vegetable soils and thus protect human health.LIU Ping ZHAO Hai-jun WANG Li-li LIU Zhao-hui WEI Jian-lin WANG Yan-qin JIANG Li-hua DONG Liang ZHANG Yu-feng 2011Agricultural Sciences in China2011,10,1:41
9Mesenchymal stem cells derived from human placenta suppress allogeneic umbilical cord blood lymphocyte proliferation显示文摘ABSTRACTHuman placenta-derived mononuclear cells (MNC) were isolated by a Percoll density gradient and cultured in mesen-chymal stem cell (MSC) maintenance medium. The homogenous layer of adherent cells exhibited a typical fibroblast-like morphology, a large expansive potential, and cell cycle characteristics including a subset of quiescent cells. In vitrodifferentiation assays showed the tripotential differentiation capacity of these cells toward adipogenic, osteogenic andchondrogenic lineages. Flow cytometry analyses and immunocytochemistry stain showed that placental MSC was ahomogeneous cell population devoid of hematopoietic cells, which uniformly expressed CD29, CD44, CD73, CD105,CD166, laminin, fibronectin and vimentin while being negative for expression of CD31, CD34, CD45 and α-smoothmuscle actin. Most importantly, immuno-phenotypic analyses demonstrated that these cells expressed class I majorhistocompatibility complex (MHC-I), but they did not express MHC-II molecules. Additionally these cells could sup-press umbilical cord blood (UCB) lymphocytes proliferation induced by cellular or nonspecific mitogenic stimuli. Thisstrongly implies that they may have potential application in allograft transplantation. Since placenta and UCB arehomogeneous, the MSC derived from human placenta can be transplanted combined with hematopoietic stem cells(HSC) from UCB to reduce the potential graft -versus-host disease (GVHD) in recipients.Chang Dong LI Wei Yuan ZHANG He Lian LI Xiao Xia JIANG Yi ZHANG Pei Hsien TANG Ning MAO 2005Cell Research2005,15,7:36
10Relationship between hepatitis B virus DNA levels and liver histology in patients with chronic hepatitis B显示文摘瞄准:与长期的肝炎 B (CHB ) 在病人学习在肝炎 B (HBV ) DNA 层次和肝组织学之间的关系并且决定肝炎 B e 的流行和特征抗原(HBeAg )negative 病人。方法:有 CHB 的 213 个病人的一个总数被学习,并且浆液 HBV DNA 层次被 COBAS Amplicor HBV 监视器测量测试。所有病人根据 HBeAg 地位被划分成二个组。在浆液 HBV DNA 层次和肝损坏(肝组织学和生物化学) 之间的关联被探索。结果:有比 105 copies/mL 高的浆液 HBV DNA 层次的 213 个病人,(83.6%) 178 是 HBeAg 积极,(16.4%) 35 是 HBeAg 否定。浆液 HBV DNA 层次没在否定的 HBeAg 或 HBeAg 被相关到肝疾病的年龄, CHB 的历史,组织学的等级和阶段积极病人。在 HBV DNA 和丙氨酸 aminotransferanse (中高音) 的浆液层次之间没有关联,在 HBeAg 积极病人的 aspartate aminotrans-ferase (著名计算机生产厂商) 。在 HBeAg 否定病人,当浆液 DNA 层次与中高音相关时,在 HBV DNA 和著名计算机生产厂商的浆液层次之间没有关联(r = 0.351, P = 0.042 ) 。肝疾病的等级(G) 与中高音和著名计算机生产厂商相关(P < 0.05, r = 0.205, 0.327 分别地) 在 HBeAg 积极病人。在 HBeAg 否定病人,关联在中高音,著名计算机生产厂商和 G 之间被显示出(P < 0.01,并且 r = 0.862, 0.802 分别地) 。 HBeAg 否定病人更老( 35 +/- 9 年对 30 +/- 9 年, P < 0.05 )并且有 HBV 感染的更长的历史( 8 +/- 4 年对 6 +/- 4 年, P < 0.05 )并且更低的 HBV DNA 比 HBeAg 积极病人铺平( 8.4 +/- 1.7 木头 HBV DNA 对 9.8 +/- 1.3 木头 HBV DNA , P < 0.001 )。在在二个组之间的两性比率,中高音和著名计算机生产厂商层次和肝组织学没有有效差量。结论:浆液 HBV DNA 水平没与 HBV DNA 在 CHB 病人被相关到肝疾病的组织学的等级或舞台超过 105 copies/mL。比作 HBeAg 积极病人, HBeAg 否定病人更老并且有更低的 HBV DNA 水平和更长的 HBV 感染历史。在在二个组之间的两性比率,中高音和著名计算机生产厂商层次和肝组织学没有有效差量。Jie Shao Lai Wei Hao Wang Yan Sun Lan-Fang Zhang Jing Li Jian-Qiang Dong 2007World Journal of Gastroenterology2007,13,14:35
11Contrast-enhanced ultrasound for detection and diagnosis of renal clear cell carcinoma显示文摘背景肾的清楚的房间癌(RCCC ) 是最普通的恶意的肾的肿瘤。它是高度恶意的,不在它的 eady 阶段引起临床的症状,并且不能用常规超声被诊断。这研究被瞄准调查时间紧张的模式和特征为 RCCC 和它有病理地诊断的 RCCC 的 42 个病人经历了的病理学的 basis.Methods 弄弯的提高对比的超声(CEUS ) 在外科前的 CEUS 检查。病人的肾用 Technos MPX DU8 在对比代理人的注射以后被设想。我们分析了有常规超声的 RCCC 的察觉率在附近是的 CEUS 模式,时间紧张曲线,和病理学的 findings.Results 71% ,当用 CEUS 的率是 100% 时。更大的肿瘤(33 个案例) 与有缺点的充满显示出不一致的改进。CEUS 模式被划分成 4 种类型:打字,“在并且外面快”(26.19% , 11/42 ) ;打字,“在快、慢外面”(40.48% , 17/42 ) ;打字,“在并且外面同时”(16.67% , 7/42 ) ;并且打字“在并且外面慢”(16.67% , 7/42 ) 。所有类型有靠近的关联到病理学的基础。“ CEUS 的时间紧张曲线由 3 个阶段组成了,灌注阶段,回归分阶段执行,并且落后阶段。类型的盒子并且仅仅有一个灌注和回归阶段,那些类型并且有一个灌注阶段,回归分阶段执行,并且落后阶段。时间紧张曲线的定量分析证明损害的 time-to-peak ( TTP )比正常肾的实质的短( P < 0.0001 ),吝啬的价值起来损害的绝对值的斜坡率比 ipsilateral 正常的高肾的实质( P < 0.0001 ),并且损害的绝对值的降下斜坡率的吝啬的价值比 ipsilateral 正常的低肾的实质( P < 0.0001 ) .Conclusions CEUS 在检测小 ve 是有用的尽管有几个不同 CEUS 模式,“在并且外面快”的类型和类型“在快、慢外面”说明了有靠近的关联到病理学的 angiogenesis 的大多数盒子。“白霜紧张曲线也显示出一些特殊特征。这些数据能为 RCCC 的临床的诊断提供珍贵信息。DONG Xiao-qiu SHEN Yi XU Li-wei XU Chun-mei BI Wei WANG Xiao-min 2009Chinese Medical Journal2009,,10:38
12Field experiment on a robust hierarchical metropolitan quantum cryptography network显示文摘A hierarchical metropolitan quantum cryptography network upon the inner-city commercial telecom fiber cables is reported in this paper. The seven-user network contains a four-node backbone net with one node acting as the subnet gateway, a two-user subnet and a single-fiber access link, which is realized by the Faraday-Michelson interferometer set-ups. The techniques of the quantum router, optical switch and trusted relay are assembled here to guarantee the feasibility and expandability of the quantum cryptography network. Five nodes of the network are located in the government departments and the secure keys generated by the quantum key distribution network are utilized to encrypt the instant video, sound, text messages and confidential files transmitting between these bureaus. The whole implementation including the hierarchical quantum cryptographic communication network links and the corresponding application software shows a big step toward the practical user-oriented network with a high security level.XU FangXing CHEN Wei WANG Shuang YIN ZhenQiang ZHANG Yang LIU Yun ZHOU Zheng ZHAO YiBo LI HongWei LIU Dong HAN ZhengFu GUO GuangCan 2009Chinese Science Bulletin2009,54,17:40
13Archean Basement and a Paleoproterozoic Collision Orogen in the Huoqiu Area at the Southeastern Margin of North China Craton: Evidence from Sensitive High Resolution Ion Micro-Probe U-Pb Zircon Geochronology显示文摘这份报纸报导微探查的 U-Pb 锆石在 Huoqiu 区域为 Huoqiu 组和早前寒武纪的地下室的 granitoids 变老的敏感高分辨率离子,北方中国 Craton 的东南的边缘。Huoqiu 组在岩石协会和变态是类似的到 khondalite 系列,除了它包含 banded 铁形成的可观的数量。从 Huoqiu 的所有由岩屑形成的锆石组织元沉积的岩石是 3.0 Ga 和 2.75 Ga,没有任何 2.5 Ga 和更年轻的,作为通常在北方中国 Craton 的另外的区域在 Paleoproterozoic khondalite 系列被发现。在 Huoqiu 区域, 2.75 Ga 和 2.56 Ga granitoids 也被识别了。这个地下室集合在迟了的 Paleoproterozoic (1.84 Ga ) 期间经历了强壮的变态广泛地在北方中国 Craton 被开发的 tectonothermal 事件。因此, Huoqiu 组的形成时间能以由岩屑形成、变形的锆石年龄在 2.75 和 1.84 Ga 之间被抑制。它被考虑,与地区性的数据结合了,可以有 Paleoproterozoic 碰撞 orogen,在一个 NWWSEE 方向延长到北方中国 Craton 的南部的边缘。WAN Yusheng DONG Chunyan WANG Wei XIE Hangqiang LIU Dunyi 2010Acta Geologica Sinica(English Edition)2010,84,1:35
14Detrital zircon age model of Ordovician Wenquan quartzite south of Lungmuco-Shuanghu Suture in the Qiangtang area, Tibet: Constraint on tectonic affinity and source regions显示文摘Early to Middle Ordovician strata, including Wenquan quartzite, occur widely in the Himalaya, Lhasa, and south Qiangtang blocks. The Wenquan quartzite occurs on the south side of the Lungmuco-Shuanghu Suture in the Qiangtang area, Tibet. A total of 145 analyses on detrital zircons from the quartzite show five age ranges of 520-700, ca. 800, 900-1100, 1800-1900, and 2400-2500 Ma, with particularly distinct age peaks of 625 and 950 Ma. The reliable youngest detrital zircon age is 525 Ma, and the oldest, 3180 Ma. Detrital zircons show large variations in Hf isotope composition, with depleted mantle model ages t DM (Hf) ranging from 750 to 3786 Ma. Based on data obtained in this study and by others, the main conclusions are as follows: 1) Low-grade metamorphic sedimentary rocks are distributed extensively in the south of the Lungmuco-Shuanghu Suture and are Phanerozoic in age; 2) Pan-African and Grenville-Jinning tectono-thermal events were well developed in the source region of the Wenquan quartzite; 3) the source region shows crustal addition and recycling of different periods; 4) Wenquan quartzite was derived from the Gondwana metamorphic basement, suggesting that the Qiangtang block is a Gondwanan fragment.DONG ChunYan LI Cai WAN YuSheng WANG Wei WU YanWang XIE HangQiang LIU DunYi 2011Science China Earth Sciences2011,54,7:39
15A 4-bp Insertion at ZmPLA 1 Encoding a Putative Phospholipase A Generates Haploid Induction in Maize显示文摘Chenxu Liu Xiang Li Dexuan Meng Yu Zhong Chen Chen Xin Dong Xiaowei Xu Baojian Chen Wei Li Liang Li Xiaolong Tian Haiming Zhao Weibin Song Haishan Luo Qinghua Zhang Jinsheng Lai Weiwei Jin Jianbing Yan Shaojiang Chen 2017Molecular Plant2017,10,3:39
16Delayed hepatocarcinogenesis through antiangiogenic intervention in the nuclear factor-kappa B activation pathway in rats显示文摘BACKGROUND:The active form of nuclear factor-kappa B(NF- κB)is involved in the initiation,generation,and development of hepatocellular carcinoma(HCC),and is up-regulated in inflammation-associated malignancies.We investigated the dynamic expression of NF-κB and its influences on the occurrence of HCC through antiangiogenic(thalidomide) intervention in NF-κB activation. METHODS:Hepatoma models were induced with 2-fluorenyl- acetamide(2-FAA,0.05%)in male Sprague-Dawley rats,and thalidomide(100 mg/kg body weight)was administered intragastrically to intervene in NF-κB activation.The pathological changes in the liver of sacrificed rats were assessed after hematoxylin and eosin staining.NF-κB mRNA was amplified by RT-nested PCR.The alterations of NF-κB and vascular endothelial growth factor(VEGF)expression were analyzed by enzyme-linked immunosorbent assay,immunohistochemistry,and Western blotting. RESULTS:Rat hepatocytes showed denatured,precancerous,and cancerous stages in hepatocarcinogenesis,with an increasing tendency of hepatic NF-κB,NF-κB mRNA,and VEGF expression,and their values in the HCC group were higher than those in controls(P<0.001).In the thalidomide- treated group,the morphologic changes generated only punctiform denaturation and necrosis at the early or middle stages,and nodular hyperplasia or a little atypical hyperplasia at the final stages,with the expression of NF-κB (χ2=9.93,P<0.001)and VEGF(χ2=8.024,P<0.001)lower than that in the 2-FAA group. CONCLUSION:NF-κB is overexpressed in hepatocarcinogenesis and antiangiogenic treatment down-regulates the expression of NF-κB and VEGF,and delays the occurrence of HCC.Dong, Zhi-Zhen Yao, Deng-Fu Wu, Wei Yao, Min Yu, Hong-Bo Shen, Jun-Jun Qiu, Li-Wei Yao, Ning-Hua Sai, Wen-Li Yang, Jun-Ling 2010Hepatobiliary & Pancreatic Diseases International2010,9,2:31
17Formation ages and source regions of the Palaeoproterozoic Gaofan, Hutuo and Dongjiao groups in the Wutai and Dongjiao areas of the North China Craton from SHRIMP U-Pb dating of detrital zircons: Resolution of debates over their stratigraphic relationships显示文摘这份报纸在北方中国 Craton 的 Wutai 和 Dongjiao 区域报导 Gaofan, Hutuo 和 Dongjiao 组的元沉积的岩石的由岩屑形成的锆石年龄分布。由岩屑形成的锆石一从 Gaofan 组的 quartzite 主要是在年龄的 2.5 Ga,与大约 2.7 Ga 并且更旧。A 石英岩从 Hutuo 组的基础集团企业的卵石在到 Gaofan 组的 quartzite 的由岩屑形成的锆石年龄分发是类似的。为从 Dongjiao 组的 meta-feldspar-quartz 沙岩,由岩屑形成的锆石的年龄主要在 2.5 Ga 被集中。比 2.6 Ga 旧的锆石都没被识别,但是在年龄与一些是 1.84 Ga 和 2.22.0 Ga。与更早的研究结合了,下列结论能被得出:(1 ) Gaofan 组是在年龄的早 Palaeoproterozoic 并且对迟了的 Neoarchaean Wutai 花岗石绿岩岩层年轻得多、无关,它 unconformably 躺它。因此, Gaofan 组是在诺思中国 Craton 的最旧的 Palaeoproterozoic 元沉积的单位之一。(2 ) Hutuo 组在一个大陆人地下室上在中间的 Palaeoproterozoic (2.14-2.09 Ga ) 被扔,在早 Palaeoproterozoic Gaofan 组后面。(3 ) Dongjiao 组在 1.84 Ga 以后被形成,并且可能属于 Changcheng 系统的更低的部分。(4 ) 从所有三个组的由岩屑形成的锆石显示出 2.5 Ga 的一座明显的年龄山峰,从在北方中国 Craton 在太古代的结束在强烈 tectono-magma-thermal 事件形成的火的岩石被采购。WAN YuSheng MIAO PeiSheng LIU DunYi YANG ChongHui WANG Wei WANG HuiChu WANG ZheJiu DONG ChunYan DU LiLin ZHOU HongYing 2010Chinese Science Bulletin2010,55,13:32
18Major Function Oriented Zone: New Method of Spatial Regulation for Reshaping Regional Development Pattern in China显示文摘Newest planning methods implemented by Chinese government are promoting a coordinated regional development and shaping an orderly spatial structure by applying the regulation of territorial function. This article analyzes the problems of spatial planning and regional strategy caused by the wrongly-set primary goal of economic development; it states that the three-fold objective of competitiveness, sustainability, and welfare fairness shall be the principal for China to implement the spatial regulation in the new era; it discusses about theoretical thoughts and technology framework of conducting the ′Major Function Oriented Zone′ based on their different major functions that each region plays in urbanization and industrialization, ecological constructions, grain productions, and protection of natural and cultural heritages; it introduces the new concept of ′Major Function Oriented Zone′ that include the major functions category, the stereo regional equilibrium mode, the two-level zoning specification, and the territorial development intensity; it offers a zoning scheme that defines development-optimized and development-prioritized zones as regions with massive urbanization and industrialization, development-restricted zones as ecological constructing or grain producing regions, development-prohibited zones as natural and cultural heritage protecting regions; and finally it addresses the main obstacle for implementing ′Major Function Oriented Zone′, which is the institutional arrangement of the supreme goal of high GDP growth rate that is currently being implemented.FAN Jie SUN Wei ZHOU Kan CHEN Dong 2012Chinese Geographical Science2012,22,2:31
19Inhibition of the B7-H3 immune checkpoint limits tumor growth by enhancing cytotoxic lymphocyte function显示文摘在肿瘤和免疫系统之间的相互作用仍然糟糕被理解。重要临床的回答在对 CTLA4 和 PD-1/PD-L1 检查点与抗体对待的癌症病人被完成了;然而,仅仅病人的小部分对治疗作出回应,显示需要探索为癌症治疗的另外的 co 禁止的分子。B7-H3, B7 总科的一个成员,被我们以前显示出禁止 T 房间激活和 autoimmunity。在这研究,我们在肿瘤免疫分析了 B7-H3 的功能。B7-H3 的表示在多重肿瘤线,渗入肿瘤的树枝状的房间,和巨噬细胞被发现。与对抗抗体对待到 B7-H3 的 B7-H3-deficient 老鼠或老鼠显示出多重肿瘤的减少的生长,它取决于 NK 和 CD8 + T 房间。与细胞毒素的淋巴细胞表示的通常认为的受体, B7-H3 禁止了他们的激活,并且它的缺乏在忍受肿瘤的鼠标导致了增加的细胞毒素的淋巴细胞功能。B7-H3 和 PD-1 的联合封锁导致了迟了阶段的肿瘤的进一步提高的治疗学的控制。一起拿,我们的结果显示 B7-H3 检查点可以对癌症为免疫疗法用作一个新奇目标。Young-hee Lee Natalia Martin-Orozco Peilin Zheng Jing Li Peng Zhang Haidong Tan Hyun Jung Park Mira Jeong Seon Hee Chang Byung-Seok Kim Wei Xiong Wenjuan Zang Li Guo Yang Liu Zhong-jun Dong Willem W Overwijk Patrick Hwu Qing Yi Larry Kwak Zhiying Yang Tak W Mak Wei-Li Laszlo G Radvanyi Ling Ni Dongfang Liu Chen Dong 2017Cell Research2017,27,8:29
205-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
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