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1179篇 您的检索式:作者名="Yao Dong"
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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
2Tectonics of South China Continent and its implications显示文摘This paper aims at exploring the tectonic characteristics of the South China Continent(SCC)and extracting the universal tectonic rules from these characteristics,to help enrich the plate tectonic theory and better understand the continental dynamic system.For this purpose,here we conduct a multi-disciplinary investigation and combine it with the previous studies to reassess the tectonics and evolution of SCC and propose that the tectonic framework of the continent comprises two blocks,three types of tectonic units,four deformation systems,and four evolutionary stages with distinctive mechanism and tectonic characteristics since the Neoproterozoic.The four evolutionary stages are:(1)The amalgamation and break-up of the Neoproterozoic plates,typically the intracontinental rifting.(2)The early Paleozoic and Mesozoic intracontinental orogeny confined by plate tectonics,forming two composite tectonic domains.(3)The parallel operation of the Yangtze cratonization and intracontinental orogeny,and multi-phase reactivation of the Yangtze craton.(4)The association and differentiation evolution of plate tectonics and intracontinental tectonics,and the dynamic characteristics under the Meso-Cenozoic modern global plate tectonic regime.ZHANG GuoWei GUO AnLin WANG YueJun LI SanZhong DONG YunPeng LIU ShaoFeng HE DengFa CHENG ShunYou LU RuKui YAO AnPing 2013Science China Earth Sciences2013,56,11:88
3Mianlüe tectonic zone and Mianlüe suture zone on southern margin of Qinling-Dabie orogenic belt显示文摘The Mianle tectonic zone (Mianle zone), an ancient suture zone in addition to the Shangdan suture in the Qinling-Dabie orogenic belt, marks an important tectonic division geo-logically separating north from south and connecting east with west in China continent. To de-termine present structural geometry and kinematics in the Mianle tectonic zone and to recon-struct the formation and evolution history involving plate subduction and collision in the Qinling-Dabie orogenic belt, through a multidisciplinary study, are significant for exploring the mountain-building orogenesis of the central orogenic system and the entire process of the major Chinese continental amalgamation during the Indosinian.ZHANG Guowei1, DONG Yunpeng1, LAI Shaocong1, GUO Anlin1, MENG Qingren2, LIU Shaofeng3, CHENG Shunyou1, YAO Anping1, ZHANG Zongqing4, PEI Xianzhi5 & LI Sanzhong6 1. Department of Geology, Northwest University, Xian 710069, China 2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China 3. Earth Science and Resource Faculty, China University of Geosciences, Beijing 100083, China 4. Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China 5. Changan University, Xian 710054, China 6. Qingdao University of Oceanography, Qingdao 266003, China 2004Science China Earth Sciences2004,47,4:57
4Specific molecular markers in hepatocellular carcinoma显示文摘BACKGROUND: The carcinogenesis of hepatocellular carcinoma (HCC) is a multi-factorial, multistep and complex process. Its prognosis is poor, and early diagnosis and monitoring metastasis of HCC is of the utmost importance. Circulating diagnostic and prognostic biomarkers could be used in proper postoperative treatment of patients at an early stage of HCC development. This review summarizes recent studies of the specific biomarkers in diagnosis and monitoring metastasis or postoperative recurrence of HCC. DATA SOURCES: An English-language literature search was conducted using MEDLINE (June 1998 to September 2006) on researches of some valuable specific biomarkers in diagnosis and monitoring metastasis or postoperative recurrence of HCC. RESULTS: Hepatoma tissues can synthesize various tumor-related proteins, polypeptides, and isoenzymes, such as alpha-fetoprotein (AFP), hepatoma-specific gamma-glutamyl transpeptidase (HS-GGT), etc, and then secrete into blood. The valuable early diagnostic and prognostic biomarkers could predict the development and metastases of HCC. Recent researches have confirmed that circulating hepatoma-specific AFP subfraction, transforming growth factor (TGF)-β1, HS-GGT, and free insulin-like growth factor (IGF)-Ⅱ may be more specific markers than total AFP level for early diagnosis for HCC. The circulating genetic markers such as AFP-mRNA, TGF-β1-mRNA, IGF-Ⅱ-mRNA, etc from peripheral blood mononuclear cells of HCC patients have been most extensively used in monitoring distal metastasis or postoperative recurrence of HCC. CONCLUSIONS: Hepatoma tissues synthesize and secrete valuable molecular markers into blood. The analyses of circulating hepatoma-specific biomarkers are usefulto early diagnosis of HCC or monitoring metastasis or postoperative recurrence of HCC.Yao, Deng-Fu Dong, Zhi-Zhen Yao, Min 2007Hepatobiliary & Pancreatic Diseases International2007,6,3:55
5Soil Microbial Community Structure in Diverse Land Use Systems:A Comparative Study Using Biolog,DGGE,and PLFA Analyses显示文摘Biolog,16S rRNA gene denaturing gradient gel electrophoresis(DGGE) ,and phospholipid fatty acid(PLFA) analyses were used to assess soil microbial community characteristics in a chronosequence of tea garden systems(8-,50-,and 90-year-old tea gardens) ,an adjacent wasteland,and a 90-year-old forest. Biolog analysis showed that the average well color development(AWCD) of all carbon sources and the functional diversity based on the Shannon index decreased(P < 0.05) in the following order:wasteland > forest > tea garden. For the DGGE analysis,the genetic diversity based on the Shannon index was significantly lower in the tea garden soils than in the wasteland. However,compared to the 90-year-old forest,the tea garden soils showed significantly higher genetic diversity. PLFA analysis showed that the ratio of Gram positive bacteria to Gram negative bacteria was significantly higher in the tea garden soils than in the wasteland,and the highest value was found in the 90-year-old forest. Both the fungal PLFA and the ratio of fungi to bacteria were significantly higher in the three tea garden soils than in the wasteland and forest,indicating that fungal PLFA was significantly affected by land-use change. Based on cluster analysis of the soil microbial community structure,all three analytical methods showed that land-use change had a greater effect on soil microbial community structure than tea garden age.XUE Dong YAO Huai-Ying GE De-Yong HUANG Chang-Yong 2008Pedosphere2008,18,5:56
6Expression 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
7Delayed 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
8Effect of Helicobacter pylori infection on gastric epithelial proliferation in progression from normal mucosa to gastric carcinoma显示文摘EfectofHelicobacterpyloriinfectionongastricepithelialproliferationinprogressionfromnormalmucosatogastriccarcinomaLIUWenZhon...LIU Wen Zhong, ZHENG Xiong, SHI Yao, DONG Quan Jiang and XIAO Shu Dong 1998World Journal of Gastroenterology1998,4,3:30
9Clinical impact of plasma TGF-β1 and circulating TGF-β1 mRNA in diagnosis of hepatocellular carcinoma显示文摘BACKGROUND:Transforming growth factor-β(TGF-β) plays an important role in the regulation of cell growth and differentiation,angiogenesis,extracellular matrix formation,immunosuppression and cancer development. In this study,we investigated the levels of TGF-β1 and TGF-β1 mRNA expression,their relationship with HBV replication,and their diagnostic value for hepatocellular carcinoma(HCC). METHODS:Total RNAs were extracted from HCC samples and matched non-tumor tissues,and from peripheral blood mononuclear cells in HCC patients.TGF-β1 mRNA was amplified by RT-PCR and confirmed by DNA sequencing. The distribution of TGF-β1 expression was assessed by immunohistochemistry.The clinical characteristics were analyzed between TGF-β1 and HBV replication.The diagnostic value of circulating TGF-β1 and TGF-β1 mRNA levels were investigated in HCC patients. RESULTS:The incidence of hepatic TGF-β1 expression was 83.3%in HCC samples,43.3%in the surrounding tissues, 94.7%in the HBV DNA-positive group,and 63.6%in the HBV DNA-negative group.Liver TGF-β1 expression was associated with the degree of HCC differentiation and the status of HBV replication,but not with the size or number of tumors.Circulating TGF-β1 level and incidence of TGF-β1 mRNA were significantly higher in the HCC groupthan in any group of patients with benign liver disease, with a higher sensitivity of 89.5%and a specificity of 94.0% for HCC diagnosis when circulating TGF-β1 levels were >1.2μg/L.No significant correlation was found between TGF-β1 expression and AFP level or tumor size.Combining TGF-β1 level and serum AFP raised the detection rate to 97.4%. CONCLUSIONS:Abnormal expression of hepatic TGF-β1 is associated with the degree of HCC differentiation and HBV replication.Both circulating TGF-β1 and TGF-β1 mRNA can be used as sensitive biomarkers for the diagnosis and prognosis of HBV-induced HCC.Zhi-Zhen Dong,Deng-Fu Yao,Min Yao,Li-Wei Qiu,Lei Zong,Wei Wu, Xin-Hua Wu,Deng-Bing Yao and Xian-Yong Meng Department of Diagnostics,Research Center of Clinical Molecular Biology,Department of Laboratory Science,and Department of GastroenterologyAffiliated Hospital and Institute of Neurosciences,Nantong University,Nantong 226001,China 2008Hepatobiliary & Pancreatic Diseases International2008,7,3:27
10Evaluation of clinical application of ESICM acute gastrointestinal injury grading system: a single-center observational study显示文摘Zhang Dong Li Nan Dong Lihua Fu Yao Liu Zhongmin Wang Yushan 2014Chinese Medical Journal2014,,10:26
11Geohazards Induced by the Lushan Ms7.0 Earthquake in Sichuan Province, Southwest China:Typical Examples, Types and Distributional Characteristics显示文摘Geohazards induced by the Lushan Ms 7.0 earthquake on April 20, 2013 mainly have four types: collapse, landslide, slope debris flow, and sand-soil liquefaction. These geohazards mainly occurred near the epicenter, on steep slopes or below cliffs in high mountain and deep valley areas, and at or near fault ends. They have no obvious relationships to active faults, but their relationships to the weathering degree and structures of rock and rock mass are obvious. Compared with the Wenchuan Ms 8.0 earthquake on May 12, 2008, the Lushan earthquake is relatively little in the impact force and the throwing amount. All of these should be related to the magnitude of this earthquake, not very large but not very little. This character of the Lushan earthquake would make some processes uncompleted so as to bring about some concealed geohazards. Finally, in order to deal with challenges presented by such conceal geohazards, some brief recommendations are put forward.ZHANG Yongshuang DONG Shuwen HOU Chuntang GUO Changbao YAO Xin LI Bin DU Jianjun ZHANG Jiagui 2013Acta Geologica Sinica(English Edition)2013,87,3:24
12Isolation and characterization of insecticidal activity of (Z)- asarone from Acorus calamus L.显示文摘Acorus 省藤属的植物 L 的杀虫活性。对 Sitophilus zeamais Motschulsky 的成年人的导出根茎的材料被使用抵抗性方法和接触毒性检验。A 的生物学上活跃的成分。省藤属的植物根茎被分开并且识别。结果证明乙醇 A 提取。省藤属的植物有强壮的抵抗性和接触效果到 S。zeamais 和 A 的活跃成分。省藤属的植物被分光镜的分析作为(Z)-asarone 描绘。从测试的回答与暴露时间和剂量变化了。在抵抗性测试,乙醇 A 提取。省藤属的植物在 629.08 og/cmpo 有 93.92% 抵抗性但是仅仅 71.38% 在 157.27 og/cmpo 在处理以后的 12 h。作为一个对比,(Z)-asarone 在 314.54 og/cmpo 显示出 84.50% 抵抗性并且 77.02% 在 78.63 og/cmpo 在处理以后的 12 h。在滤纸散开测试,乙醇 A 提取。省藤属的植物引起了 95.56% 和 17.78% 死亡到 S。在 314.54 og/cmpo 和 78.63 og/ cmpo 的 zeamais 在处理以后的 4 天,当(Z)-asarone 分别地在 40.89 og/cmpo 和 15.73 og/cmpo 引起了 100.00% 和 15.56% 死亡时。这些结果显示 A 的杀虫活性。省藤属的植物摘录可能由于(Z)-asarone。Yingjuan Yao Wanlun Cai Changju Yang Dong Xue Yanzhang Huang 2008Insect Science2008,15,3:22
13Individualized prediction of perineural invasion in colorectal cancer: development and validation of a radiomics prediction model显示文摘Objective: To develop and validate a radiomics prediction model for individualized prediction of perineural invasion(PNI) in colorectal cancer(CRC).Methods: After computed tomography(CT) radiomics features extraction, a radiomics signature was constructed in derivation cohort(346 CRC patients). A prediction model was developed to integrate the radiomics signature and clinical candidate predictors [age, sex, tumor location, and carcinoembryonic antigen(CEA) level]. Apparent prediction performance was assessed. After internal validation, independent temporal validation(separate from the cohort used to build the model) was then conducted in 217 CRC patients. The final model was converted to an easy-to-use nomogram.Results: The developed radiomics nomogram that integrated the radiomics signature and CEA level showed good calibration and discrimination performance [Harrell's concordance index(c-index): 0.817; 95% confidence interval(95% CI): 0.811–0.823]. Application of the nomogram in validation cohort gave a comparable calibration and discrimination(c-index: 0.803; 95% CI: 0.794–0.812).Conclusions: Integrating the radiomics signature and CEA level into a radiomics prediction model enables easy and effective risk assessment of PNI in CRC. This stratification of patients according to their PNI status may provide a basis for individualized auxiliary treatment.Yanqi Huang Lan He Di Dong Caiyun Yang Cuishan Liang Xin Chen Zelan Ma Xiaomei Huang Su Yao Changhong Liang Jie Tian Zaiyi Liu 2018Chinese Journal of Cancer Research2018,30,1:23
14Mechanical properties and corrosion behavior of selective laser melted 316L stainless steel after different heat treatment processes显示文摘Irregular grains, high interfacial stresses and anisotropic properties widely exist in 3D-printed metallic materials, and this paper investigated the effects of heat treatment on the microstructural, mechanical and corrosion properties of 316 L stainless steel fabricated by selective laser melting. Sub-grains and low-angle boundaries exist in the as-received selective laser melted(SLMed) 316 L stainless steel. After heat treatment at 1050℃, the sub-grains and low-angle boundaries changed slightly, and the stress state and strength decreased to some extent due to the decrease of dislocation density. After heat treatment at 1200℃, the grains became uniform, and the dislocation cells vanished, which led to a sharp decline in the hardness and strength. However, the ductility was improved after recrystallization heat treatment.The passive film thickness and corrosion potential of the SLMed 316 L stainless steel decreased after heat treatment, and the pitting potential also decreased due to the accelerated transition from metastable to steady-state pitting;this accelerated transition was caused by the presence of weak passive films at the enlarged pores after heat treatment, especially for an adequate solid solution treatment.Decheng Kong Chaofang Dong Xiaoqing Ni Liang Zhang Jizheng Yao Cheng Man Xuequn Cheng Kui Xiao Xiaogang Li 2019Journal of Materials Science & Technology2019,35,7:23
15Secukinumab demonstrates high efficacy and a favorable safety profile over 52 weeks in Chinese patients with moderate to severe plaque psoriasis显示文摘Background:Psoriasis is a chronic inflammatory skin disease,affecting about 0.6%of the Chinese population.Many patients are not well controlled by conventional treatments,thus there is need for new treatment regimens.In this study,we assessed the efficacy and safety of secukinumab in Chinese patients with moderate to severe plaque psoriasis.Methods:This study was a 52-week,multicentre,randomized,double-blind,placebo-controlled,parallel-group,Phase 3 trial.A sub-population of study participants(≥18 years)of Chinese ethnicity were randomized to receive subcutaneous injections of 300 or 150 mg secukinumab,or placebo.The co-primary endpoints were psoriasis area severity index(PASI)75 and Investigator’s Global Assessment(IGA)0/1 at Week 12.Results:A total of 441 Chinese patients were enrolled in this study.Co-primary outcomes were achieved;300 and 150 mg secukinumab were superior to placebo as shown in the proportion of patients that achieved PASI 75(97.7%and 87.2%vs.3.7%,respectively;P<0.001),and IGA 0/1(82.3%and 69.7%vs.2.7%;P<0.001)at Week 12.Treatment efficacy was maintained until Week 52.There was no increase in overall adverse events with secukinumab relative to placebo throughout the 52-week period.Conclusion:Secukinumab is highly effective and well tolerated in Chinese patients with moderate to severe plaque psoriasis.Lin Cai Jian-Zhong Zhang Xu Yao Jun Gu Quan-Zhong Liu Min Zheng Shi-Fa Zhang Jin-Hua Xu Cheng-Xin Li Hao Cheng Qing Guo Wei-Li Pan Shen-Qiu Li Ruo-Yu Li Zai-Pei Guo Zhi-Qi Song Shan-Shan Li Xiu-Qin Dong Linda Wang Rong Fu Pascaline Regnault Pascal Charef Ratal Mazur Manmath Patekar 2020Chinese Medical Journal2020,,22:21
16Effect of lime application on microbial community in acidic tea orchard soils in comparison with those in wasteland and forest soils显示文摘Lime application is a conventional technology to control acidification in tea orchard soils. We investigated the effect of lime application on soil microbial community diversity in the soils of three tea orchards, wasteland and forest. The BIOLOG data showed that both the average well color development of all carbon sources and the functional diversity index increased with the liming rate in the tea orchards and the forest, but decreased in the wasteland. The phospholipid fatty acid (PLFA) analysis showed that the structural diversity index of soil microbial community increased with the liming rate in all the tea orchards, the wasteland and the forest. Lime application also increased the soil-bacterial PLFA content in all the soils. Soil fungal and actinomycete PLFAs in the tea orchards showed an increasing trend from 0 to 3.2 g CaCO 3 /kg application and then a decreasing trend from 3.2 to 6.4 g CaCO 3 /kg application. The principal component analysis of BIOLOG and PLFA data suggested that lime application had a significant effect on soil microbial community structure, and land use had a greater effect on soil microbial community structure compared to lime application.Dong Xue Xiangdong Huang Huaiying Yao Changyong Huang 2010Journal of Environmental Sciences2010,22,8:20
17Effect of porosities of bilayered porous scaffolds on spontaneous osteochondral repair in cartilage tissue engineering显示文摘Poly(lactide-co-glycolide)-bilayered scaffolds with the same porosity or different ones on the two layers were fabricated,and the porosity effect on in vivo repairing of the osteochondral defect was examined in a comparative way for the first time.The constructs of scaffolds and bone marrow-derived mesenchymal stem cells were implanted into pre-created osteochondral defects in the femoral condyle of New Zealand white rabbits.After 12 weeks,all experimental groups exhibited good cartilage repairing according to macroscopic appearance,cross-section view,haematoxylin and eosin staining,toluidine blue staining,immunohistochemical staining and real-time polymerase chain reaction of characteristic genes.The group of 92%porosity in the cartilage layer and 77%porosity in the bone layer resulted in the best efficacy,which was understood by more biomechanical mimicking of the natural cartilage and subchondral bone.This study illustrates unambiguously that cartilage tissue engineering allows for a wide range of scaffold porosity,yet some porosity group is optimal.It is also revealed that the biomechanical matching with the natural composite tissue should be taken into consideration in the design of practical biomaterials,which is especially important for porosities of a multi-compartment scaffold concerning connected tissues.Zhen Pan Pingguo Duan Xiangnan Liu Huiren Wang Lu Cao Yao He Jian Dong Jiandong Ding 2015Regenerative Biomaterials2015,2,1:20
18The oncoprotein p28^GANK establishes a positive feedback loop in p-catenin signaling显示文摘Li-wei Dong Guang-zhen Yang Yu-fei Pan Yao Chen Ye-xiong Tan Rong-yang Dai Yi-bin Ren Jing Fu Hong-yang Wang 2011Cell Research2011,21,8:19
19Combined acoustic radiation force impulse, aminotransferase to platelet ratio index and Forns index assessment for hepatic fibrosis grading in hepatitis B显示文摘AIM: To investigate the combined diagnostic accuracy of acoustic radiation force impulse(ARFI), aspartate aminotransferase to platelet ratio index(APRI) and Forns index for a non-invasive assessment of liver fibrosis in patients with chronic hepatitis B(CHB). METHODS: In this prospective study, 206 patients had CHB with liver fibrosis stages F0-F4 classified by METAVIR and 40 were healthy volunteers were measured by ARFI, APRI and Forns index separately or combined as indicated. RESULTS: ARFI, APRI or Forns index demonstrated a significant correlation with the histological stage(all P < 0.001). According to the AUROC of ARFI and APRI for evaluating fibrotic stages more than F2, ARFI showed an enhanced diagnostic accuracy than APRI(P < 0.05). The combined measurement of ARFI and APRI exhibited better accuracy than ARFI alone when evaluating ≥ F2 fibrotic stage(Z = 2.77, P = 0.006). Combination of ARFI, APRI and Forns index did not obviously improve the diagnostic accuracy compared to the combination of ARFI and APRI(Z = 0.958, P = 0.338). CONCLUSION: ARFI + APRI showed enhanced diagnostic accuracy than ARFI or APRI alone for significant liver fibrosis and ARFI + APRI + Forns index shows the same effect with ARFI + APRI.Chang-Feng Dong Jia Xiao Ling-Bo Shan Han-Ying Li Yong-Jia Xiong Gui-Lin Yang Jing Liu Si-Min Yao Sha-Xi Li Xiao-Hua Le Jing Yuan Bo-Ping Zhou George L Tipoe Ying-Xia Liu 2016World Journal of Hepatology2016,8,14:18
20Prenatal diagnosis of methylmalonic aciduria by analysis of organic acids and total homocysteine in amniotic fluid显示文摘背景:Methylmalonic 酸尿(MMA ) 是在中国的器官的酸尿的最经常的疾病。各种各样的生物化学的策略为 MMA 的出生前的诊断被跟随。然而,后来, MMA 影响的胎儿减少了 methylmalonic 酸的排泄,出生前的生物化学的诊断的困难是明显的。煤气的层析团分光术(GC/MS ) 和双人脚踏车团分光术(ESI/MS/MS ) 允许我们在影响胎儿识别疾病。这研究的目的是在 MMA 的出生前的诊断在羊膜的液体决定有机酸和全部的人半胱氨酸的分析的价值。方法:临床诊断并且有 MMA 的九个职业人员乐队的结果并且出生前在风险基于九个胎儿的生物化学的分析诊断因为 MMA 被调查。从在为 MMA 的风险的怀孕和新陈代谢的联盟者正常怀孕的羊膜的液体样品在 16 点被获得 - 24 星期怀孕期。Methylmalonic 酸和甲基枸橼酸被 GC/MS 测量, propionylcarnitine 被 ESI/MS/MS 分析,并且全部的人半胱氨酸由荧光极化免疫分析是坚定的。结果:在二怀孕, methylmalonic 酸的高水平,甲基枸橼酸, propionylcarnitine,和总数,人半胱氨酸在胎儿显示了联合 MMA 和 homocysteinemia。继续的怀孕和收到的维生素 B12 作为出生前的处理,和其它补充的母亲之一终止了她的怀孕。在一个,怀孕, methylmalonic 酸的显著地提高的层次,甲基枸橼酸,和 propionylcarnitine,和正常全部的人半胱氨酸铺平被发现在胎儿显示孤立的 MMA;流产在这个案例上被执行。在另外的六怀孕,上述提及的代谢物的所有层次是正常的建议胎儿没被 MMA 影响。diagnoses 被严峻的尿有机酸和血浆总数人半胱氨酸在交货以后证实。结论:MMA 的新陈代谢的畸形在怀孕期早发生。在羊膜的液体的全部的人半胱氨酸的水平可以是胎儿的联合 MMA 和 homocysteinemia 的另外的指示物。在羊膜的液体的全部的人半胱氨酸水平的决心可以为疾病的出生前的诊断成为一个方便、可靠的方法。ZHANG Yao YANG Yan-ling HASEGAWA Yuki YAMAGUCHI Seiji SHI Chun-yan SONG Jin-qing SAYAMI Sujan LIU Ping YAN Rong DONG Jin-hua QIN Jiong 2008Chinese Medical Journal2008,,3:18
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