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1A rapid advice guideline for the diagnosis and treatment of 2019 novel coronavirus(2019-nCoV) infected pneumonia(standard version)显示文摘In December 2019, a new type viral pneumonia cases occurred in Wuhan, Hubei Province;and then named '2019 novel coronavirus(2019-nCoV)' by the World Health Organization(WHO) on 12 January 2020. For it is a never been experienced respiratory disease before and with infection ability widely and quickly, it attracted the world’s attention but without treatment and control manual. For the request from frontline clinicians and public health professionals of 2019-nCoV infected pneumonia management, an evidence-based guideline urgently needs to be developed. Therefore, we drafted this guideline according to the rapid advice guidelines methodology and general rules of WHO guideline development;we also added the first-hand management data of Zhongnan Hospital of Wuhan University. This guideline includes the guideline methodology, epidemiological characteristics, disease screening and population prevention, diagnosis, treatment and control(including traditional Chinese Medicine), nosocomial infection prevention and control, and disease nursing of the 2019-nCoV. Moreover, we also provide a whole process of a successful treatment case of the severe 2019-nCoV infected pneumonia and experience and lessons of hospital rescue for 2019-nCoV infections. This rapid advice guideline is suitable for the first frontline doctors and nurses, managers of hospitals and healthcare sections, community residents, public health persons, relevant researchers, and all person who are interested in the 2019-nCoV.Ying-Hui Jin Lin Cai Zhen-Shun Cheng Hong Cheng Tong Deng Yi-Pin Fan Cheng Fang Di Huang Lu-Qi Huang Qiao Huang Yong Han Bo Hu Fen Hu Bing-Hui Li Yi-Rong Li Ke Liang Li-Kai Lin Li-Sha Luo Jing Ma Lin-Lu Ma Zhi-Yong Peng Yun-Bao Pan Zhen-Yu Pan Xue-Qun Ren Hui-Min Sun Ying Wang Yun-Yun Wang Hong Weng Chao-Jie Wei Dong-Fang Wu Jian Xia Yong Xiong Hai-Bo Xu Xiao-Mei Yao Yu-Feng Yuan Tai-Sheng Ye Xiao-Chun Zhang Ying-Wen Zhang Yin-Gao Zhang Hua-Min Zhang Yan Zhao Ming-Juan Zhao Hao Zi Xian-Tao Zeng Yong-Yan Wang Xing-Huan Wang 2020Military Medical Research2020,7,1:161
2Transmission Dynamics of an Outbreak of the COVID-19 Delta Variant B.1.617.2——Guangdong Province,China,May-June 2021显示文摘On May 21,2021,a local case of coronavirus disease 2019(COVID-19)was confirmed in a 75-year-old woman(experienced onset of symptoms on May 18)in Liwan District,Guangzhou City,Guangdong Province,China.The number of infections has increased in the following 10 days and led to 5 generations of transmission.Meng Zhang Jianpeng Xiao Aiping Deng Yingtao Zhang Yali Zhuang Ting Hu Jiansen Li Hongwei Tu Bosheng Li Yan Zhou Jun Yuan Lei Luo Zimian Liang Youzhi Huang Guoqiang Ye Mingwei Cai Gongli Li Bo Yang Bin Xu Ximing Huang Yazun Cui Dongsheng Ren Yanping Zhang Min Kang Yan Li 2021China CDC weekly2021,3,27:51
3Effect of subsoil tillage depth on nutrient accumulation, root distribution, and grain yield in spring maize显示文摘A four-year field experiment was conducted to investigate the effect of subsoiling depth on root morphology, nitrogen(N), phosphorus(P), and potassium(K) uptake, and grain yield of spring maize. The results indicated that subsoil tillage promoted root development,increased nutrient accumulation, and increased yield. Compared with conventional soil management(CK), root length, root surface area, and root dry weight at 0–80 cm soil depth under subsoil tillage to 30 cm(T1) and subsoil tillage to 50 cm(T2) were significantly increased, especially the proportions of roots in deeper soil. Root length, surface area, and dry weight differed significantly among three treatments in the order of T2 > T1 > CK at the12-leaf and early filling stages. The range of variation of root diameter in different soil layers in T2 treatment was the smallest, suggesting that roots were more likely to grow downwards with deeper subsoil tillage in soil. The accumulation of N, P, and K in subsoil tillage treatment was significantly increased, but the proportions of kernel and straw were different. In a comparison of T1 with T2, the grain accumulated more N and P, while K accumulation in kernel and straw varied in different years. Grain yield and biomass were increased by 12.8% and 14.6% on average in subsoil tillage treatments compared to conventional soil treatment. Although no significant differences between different subsoil tillage depths were observed for nutrient accumulation and grain yield, lodging resistance of plants was significantly improved in subsoil tillage to 50 cm, a characteristic that favors a high and stable yield under extreme environments.Hongguang Cai Wei Ma Xiuzhi Zhang Jieqing Ping Xiaogong Yan Jianzhao Liu Jingchao Yuan Lichun Wang Jun Ren 2014The Crop Journal2014,2,5:42
4SIRT6 safeguards human mesenchymal stem cells from oxidative stress by coactivating NRF2显示文摘Huize Pan Di Guan Xiaomeng Liu Jingyi Li Lixia Wang Jun Wu Junzhi Zhou Weizhou Zhang Ruotong Ren Weiqi Zhang Ying Li Jiping Yang Ying Hao Tingting Yuan Guohong Yuan Hu Wang Zhenyu Ju Zhiyong Mao Jian Li Jing Qu FuchouTang Guang-Hui Liu 2016Cell Research2016,26,2:32
5Improved survival of porcine acute liver failure by a bioartificial liver device implanted with induced human functional hepatocytes显示文摘Xiao-Lei Shi Yimeng Gao YupengYan HuchengMa Lulu Sun Pengyu Huang Xuan Ni Ludi Zhang Xin Zhao Haozhen Ren Dan Hu Yan Zhou Feng Tian Yuan Ji Xin Cheng Guoyu Pan Yi-Tao Ding LijianHui 2016Cell Research2016,26,2:31
6Targeted migration of mesenchymal stem cells modified with CXCR4 to acute failing liver improves liver regeneration显示文摘AIM:To improve the colonization rate of transplanted mesenchymal stem cells(MSCs)in the liver and effect of MSC transplantation for acute liver failure(ALF).METHODS:MSC was modified with the chemokine CXC receptor 4(CXCR4)gene(CXCR4-MSC)or not(Null-MSC)through lentiviral transduction.The characteristics of CXCR4-MSCs and Null-MSCs were determined by real-time quantitative polymerase chain reaction,Western blotting and flow cytometry.CXCR4-MSCs and Null-MSCs were infused intravenously 24 h after administration of CCl4 in nude mice.The distribution of the MSCs,survival rates,liver function,hepatocyte regeneration and growth factors of the recipient micewere analyzed.RESULTS:In vitro,CXCR4-MSCs showed better migration capability toward stromal cell-derived factor-1αand a protective effect against thioacetamide in hepatocytes.In vivo imaging showed that CXCR4-MSCs migrated to the liver in larger numbers than Null-MSCs1 and 5 d after ALF.Higher colonization led to a longer lifetime and better liver function.Either CXCR4-MSCs or Null-MSCs exhibited a paracrine effect through secreting hepatocyte growth factor and vascular endothelial growth factor.Immunohistochemical analysis of Ki-67showed increased cell proliferation in the damaged liver of CXCR4-MSC-treated animals.CONCLUSION:Genetically modified MSCs expressing CXCR4 showed greater colonization and conferred better functional recovery in damaged liver.Hu-Cheng Ma Xiao-Lei Shi Hao-Zhen Ren Xian-Wen Yuan Yi-Tao Ding 2014World Journal of Gastroenterology2014,20,40:29
7Gynura root induces hepatic veno-occlusive disease:A case report and review of the literature显示文摘Gynura root has been used extensively in Chinese folk medicine and plays a role in promoting microcirculation and relieving pain.However,its hepatic toxicity should not be neglected.Recently,we admitted a 62-year old female who developed hepatic veno-occlusive disease(HVOD)after ingestion of Gynura root.Only a few articles on HVOD induced by Gynura root have been reported in the literature.It is suspected that pyrrolizidine alkaloids in Gynura root might be responsible for HVOD.In this paper,we report a case of HVOD and review the literature.Ning Dai Ying-Cong Yu Tian-Hua Ren Jia-Guo Wu Yuan Jiang Lai-Gen Shen Jing Zhang 2007World Journal of Gastroenterology2007,13,10:27
8Effect of high-dose rosuvastatin loading before percutaneous coronary intervention in female patients with non-ST-segment elevation acute coronary syndrome显示文摘GAO Yuan JIA Zhi-mei SUN Yu-jiao ZHANG Zhi-hong REN Li-na QI Guo-xian 2012Chinese Medical Journal2012,,13:24
9Breast cancer development and progression:Risk factors,cancer stem cells,signaling pathways,genomics,and molecular pathogenesis显示文摘As the most commonly occurring cancer in women worldwide,breast cancer poses a formidable public health challenge on a global scale.Breast cancer consists of a group of biologically and molecularly heterogeneous diseases originated from the breast.While the risk factors associated with this cancer varies with respect to other cancers,genetic predisposition,most notably mutations in BRCA1 or BRCA2 gene,is an important causative factor for this malignancy.Breast cancers can begin in different areas of the breast,such as the ducts,the lobules,or the tissue in between.Within the large group of diverse breast carcinomas,there are various denoted types of breast cancer based on their invasiveness relative to the primary tumor sites.It is important to distinguish between the various subtypes because they have different prognoses and treatment implications.As there are remarkable parallels between normal development and breast cancer progression at the molecular level,it has been postulated that breast cancer may be derived from mammary cancer stem cells.Normal breast development and mammary stem cells are regulated by several signaling pathways,such as estrogen receptors(ERs),HER2,and Wnt/b-catenin signaling pathways,which control stem cell proliferation,cell death,cell differentiation,and cell motility.Furthermore,emerging evidence indicates that epigenetic regulations and noncoding RNAs may play important roles in breast cancer development and may contribute to the heterogeneity and metastatic aspects of breast cancer,especially for triple-negative breast cancer.This review provides a comprehensive survey of the molecular,cellular and genetic aspects of breast cancer.Yixiao Feng Mia Spezia Shifeng Huang Chengfu Yuan Zongyue Zeng Linghuan Zhang Xiaojuan Ji Wei Liu Bo Huang Wenping Luo Bo Liu Yan Lei Scott Du Akhila Vuppalapati Hue H.Luu Rex C.Haydon Tong-Chuan He Guosheng Ren 2018Genes & Diseases2018,5,2:24
10Granulocyte-macrophage colony-stimulating factor (GM-CSF) and T-cell responses: what we do and don't know显示文摘Granulocyte 巨噬细胞刺激殖民地的因素(GM-CSF ) 是一个重要造血的生长因素和有免疫力的调节的人。GM-CSF 也在各种各样的传播白血球的功能的活动有深刻效果。它被许多房间类型在收到有免疫力的刺激之上包括 T 房间,巨噬细胞, endothelial 房间和成纤维细胞生产。尽管 GM-CSF 局部地被生产,它能以一种 paracrine 方式行动到在主人防卫提高他们的功能的成员传播 neutrophils,单核白血球和淋巴细胞。最近的集中的调查为它增加树枝状的房间(DC ) 成熟和功能以及巨噬细胞活动的能力作为一个有免疫力的助手在 GM-CSF 的应用程序上被集中。在经历化疗的癌症病人对待嗜中性白血球减少症临床上被使用,在在治疗期间的爱滋病病人,并且在在骨髓移植以后的病人。有趣地, GM-CSF-deficient 老鼠的造血的系统看起来正常;最重要的变化在一些特定的 T 房间回答。尽管 GM-CSF 的分子的克隆用 T 房间的 cDNA 图书馆被执行, T 房间在激活以后生产 GM-CSF,是众所周知的,在 T 房间功能上有在由 T 房间和它的效果的生产的这 cytokine 的系统的调查的缺乏。在这篇文章,我们将在 T 房间主要集中于 GM-CSF 的免疫生物学。Yufang Shi Catherine H Liu Arthur I Roberts Jyoti Das Guangwu Xu Guangwen Ren Yingyu Zhang Liying Zhang Zeng Rong Yuan Hung Sheng William Tan Gobardhan Das Satish Devadas 2006Cell Research2006,16,2:22
11Effect of ursodeoxycholic acid on TGF betal/Smad signaling pathway in rat hepatic stellate cells显示文摘背景肝的纤维变性到 cirrhosis.Ursodeoxycholic 酸( UDCA )的从肝的损害的病理学的进步的关键阶段作为在研究试图在转变生长因素 beta1 ( TGF1 ) /Smad 的发信号的小径上学习 UDCA 的效果并且讨论的长期的肝 diseases.Our 上有重要临床的治疗学的效果被知道了它禁止肝的 fibrosis.Methods 的可能的分子的机制老鼠肝的星形的房间在 vitro 是有教养的并且随机把 gr 分到 4 组 A 是控制组,与仅仅文化媒介使用了的 DMEM,并且组织 B, C, D 是试验性的组,与 UDCA 的不同剂量(1.0 mmol/L, 0.5 mmol/L 和 0.25 mmol/L 分别地) 增加了进他们 24 个小时和 48 个小时的进一步的文化的 DMEM 文化媒介。TGF1 的蛋白质表情, TGF 类型我受体, Smad3, Smad4 和 Smad7 被西方的弄污,以及 TGF1, Smad3, Smad7 和营地反应元素(CREB ) 的表情测量由即时 PCR 的有约束力的蛋白质(CBP ) mRNA。社会科学统计套装软体 11.5 统计包裹与控制组,相比为数据 analyses.Results 被采用在为 24 个小时和 48 个小时的高、中间的 UDCA 剂量组的 TGF1 的 mRNA 表达式显著地减少了( P < 0.05 ),在为 48 个小时的二个上面的组并且在为 24 个小时的高剂量组的 TGF1 的蛋白质表达式显著地减少了( P < 0.05 )。在为 24 个小时和 48 个小时的每个 UDCA 剂量组的 Smad3 的蛋白质和 mRNA 表情显著地减少了,与在不同 UDCA 亲密的组之中的重要差别,在 24 的之间,小时和 48 个小时观察了(P < 0.05 ) 。在高、中间的 UDCA 的 Smad7 的蛋白质和 mRNA 表情关上组显著地增加的 24 个小时和 48 个小时。在为 24 个小时和 48 个小时的每个 UDCA 剂量组的 CBP mRNA 表示显著地减少了( P < 0.05 ),与在不同 UDCA 之中的重要差别,剂量组观察了( P < 0.05 ) .Conclusion UDCA 能通过由禁止 TGF1 , Smad3 和 CBP 的表情并且增加 Smad7 的表示影响 TGF1/Smad 的发信号的小径限制肝的纤维变性的发展。LIANG Tie-jun YUAN Jun-hua TAN Yan-rong REN Wan-hua HAN Guo-qing ZHANG Jie WANG Lai-cheng QIN Cheng-yong 2009Chinese Medical Journal2009,,10:23
12NPP vulnerability of the potential vegetation of China to climate change in the past and future显示文摘用综合生物圈模拟器,一个动态植被模型,这研究开始模仿了网过去的 55 年(1961-2015 ) 里并且在未来的瓷器潜在的植被的主要生产率(NPP ) 动力学 35 年(2016-2050 ) 。然后,在平均气候拿潜在的植被的 NPP 作为评估的基础在 1986-2005 期间调节,这研究检验了潜在的植被是否适应气候变化。同时,无适应性的度被评估。最后,潜在的植被的 NPP 危险被综合评估到气候的无适应性的频率和度变化。在过去的 55 年里,在 Tianshan 山的南方的荒芜的生态系统和在中国的北方并且在西方的西藏的高原的草地生态系统的 NPP 对气候变化的效果敏感。大多数森林生态系统的 NPP 不对气候变化的影响敏感。对气候变化的低 NPP 弱点常绿树阔叶、具球果的森林被观察。而且,在在中央、东方的西藏的高原的 Tianshan 山脉和草地生态系统的北方的荒芜的生态系统的 NPP 也有低危险到气候变化。在下一 35 年里,对气候变化的 NPP 弱点将在中央、西方的西藏的高原在 Songliao 平原,在温暖的适度的地区的脱落阔叶的森林,和高山的大草原减少森林大草原。NPP 危险将显著地在 Kunlun 山在 Junggar 盆和高山的沙漠适度的沙漠增加。NPP 危险副热带常绿树阔叶的森林将也增加。有增加的危险的区域的区域将说明 27.5% 中国。YUAN Quanzhi WU Shaohong DAI Erfu ZHAO Dongsheng REN Ping ZHANG Xueru 2017Journal of Geographical Sciences2017,27,2:21
13APC and K-ras gene mutation in aberrant crypt foci of human colon显示文摘AIM To study the genetic alteration in ACF andto define the possibility that ACF may be a veryearly morphological lesion with molecularchanges, and to explore the relationshipbetween ACF and colorectal adenoma evencarcinoma.METHODS DNA from 35 CRC, 15 adenomas, 34ACF and 10 normal mucus was isolated by meansof microdissection. Direct gene sequencing of K-ras gene including codon 12, 13 and 61 as well asthe mutation cluster region (MCR) of APC genewas performed.RESULTS K-ras gene mutation frequency inACF, adenoma and carcinoma was 17.6% (6/34), 13.3% (2/ 15), and 14.3% (5/ 35)respectively, showing no difference ( P > 0.05)in K-fas gene mutation among three pathologicprocedures. The K-ras gene mutation inadenoma, carcinoma and 4 ACF restricted incodon 12 (GGT→GAT), but the other 2 mutationsfrom ACF located in codon 13 (GGC→GAC). K-res gene mutation was found more frequently inolder patients and patients with polypoidcancer. No mutation in codon 61 was found in thethree tissue types. Mutation rate of APO gene inadenoma and carcinoma was 22.9% (8/35) and26.7% (4/ 15), which was higher than ACF(2.9%) (P < 0.05). APC gene mutation incarcinoma was not correlated with age ofpatients, location, size and differentiation oftumor.CONCLUSION ACF might be a very earlymorphological lesion in the tumorogenesis ofcolorectal tumor. The morphological feature andgene mutation status was different in ACF andadenoma. ACF is possibly putative'microadenoma' that might be the precursor ofadenoma. In addition, the development of asubgroup of colorectal carcinomas mightundergo a way of 'normal epithelium→ ACF→carcinomas'.Ping Yuan~1 Meng Hong Sun~2 Jin Sheng Zhang~1 Xiong Zeng Zhu~2 Da Ren Shi~2 ~1Department of Pathology,Medical College of Fudan University,~2Department of Pathology,Cancer Hospital/Cancer Institute,Fudan University,Shanghai 200032,ChinaDr.Ping Yuan Studying Province.studying in Medical College of Fudan University,worked in Department of Pathology,Wannan Medical College,having eighteen papers published. 2001World Journal of Gastroenterology2001,7,3:20
14The China Alzheimer Report 2022显示文摘China’s population has rapidly aged over the recent decades of social and economic development as neurodegenerative disorders have proliferated,especially Alzheimer’s disease(AD)and related dementias(ADRD).AD’s incidence rate,morbidity,and mortality have steadily increased to make it presently the fifth leading cause of death among urban and rural residents in China and magnify the resulting financial burdens on individuals,families and society.The‘Healthy China Action’plan of 2019-2030 promotes the transition from disease treatment to health maintenance for this expanding population with ADRD.This report describes related epidemiological trends,evaluates the economic burden of the disease,outlines current clinical diagnosis and treatment status and delineates existing available public health resources.More specifically,it examines the public health impact of ADRD,including prevalence,mortality,costs,usage of care,and the overall effect on caregivers and society.In addition,this special report presents technical guidance and supports for the prevention and treatment of AD,provides expertise to guide relevant governmental healthcare policy development and suggests an information platform for international exchange and cooperation.Rujing Ren Jinlei Qi Shaohui Lin Xinya Liu Peng Yin Zhihui Wang Ran Tang Jintao Wang Qiang Huang Jianping Li Xinyi Xie Yongbo Hu Shishuang Cui Yuan Zhu Xiaoping Yu Pengfei Wang Yikang Zhu Yiran Wang Yanyan Huang Yisong Hu Ying Wang Chunbo Li Maigeng Zhou Gang Wang 2022General Psychiatry2022,35,1:20
15Relationship between Two Blood Stasis Syndromes and Inflammatory Factors in Patients with Acute Coronary Syndrome显示文摘Objective: To investigate the relationship between inflammatory factors and two Chinese medicine(CM) syndrome types of qi stagnation and blood stasis(QSBS) and qi deficiency and blood stasis(QDBS) in patients with acute coronary syndrome(ACS). Methods: Sixty subjects with ACS, whose pathogenesis changes belongs to qi disturbance blood stasis syndrome, were divided into 2 groups: 30 in the QSBS group and 30 in the QDBS group. The comparative analysis on them was carried out through comparing general information, coronary angiography and inflammatory factors including intracellular adhesion molecule-1(ICAM-1), chitinase-3-like protein 1(YKL-40) and lipoprotein-associated phospholipase A2(Lp-PLA2). Results: Compared with the QSBS group, Lp-PLA2 and YKL-40 levels in the QDBS group showed no-significant difference(P>0.05); ICAM-1 was significantly higher in the QDBS group than in the QSBS group in the pathological processes of qi disturbance and blood stasis syndrome of ACS(P<0.05). Conclusion: Inflammatory factor ICAM-1 may be an objective basis for syndrome typing of QSBS and QDBS, which provides a research direction for standardization research of CM syndrome types.MA Cai-yun LIU Jing-hua LIU Jian-xun SHI Da-zhuo XU Zhen-ye WANG Shao-ping JIA Min ZHAO FU-hai JIANG YUE-rong MA Qin PENG Hong-yu LU Yuan ZHENG Ze REN Feng-xue 2017Chinese Journal of Integrative Medicine2017,23,11:19
16New Neural Network Response Surface Methods for Reliability Analysis显示文摘This article presents two new kinds of artificial neural network (ANN) response surface methods (RSMs): the ANN RSM based on early stopping technique (ANNRSM-1), and the ANN RSM based on regularization theory (ANNRSM-2). The following improvements are made to the conventional ANN RSM (ANNRSM-0): 1) by monitoring the validation error during the training process, ANNRSM-1 determines the early stopping point and the training stopping point, and the weight vector at the early stopping point, which corresponds to the ANN model with the optimal generalization, is finally returned as the training result; 2) according to the regularization theory, ANNRSM-2 modifies the conventional training performance function by adding to it the sum of squares of the network weights, so the network weights are forced to have smaller values while the training error decreases. Tests show that the performance of ANN RSM becomes much better due to the above-mentioned improvements: first, ANNRSM-1 and ANNRSM-2 approximate to the limit state function (LSF) more accurately than ANNRSM-0; second, the estimated failure probabilities given by ANNRSM-1 and ANNRSM-2 have smaller errors than that obtained by ANNRSM-0; third, compared with ANNRSM-0, ANNRSM-1 and ANNRSM-2 require much fewer data samples to achieve stable failure probability results.REN Yuan BAI Guangchen 2011Chinese Journal of Aeronautics2011,24,1:18
17CFD-DEM simulation of spouting of corn-shaped particles显示文摘Three dimensionally coupled computational fluid dynamics (CFD) and discrete element method (DEM) were used to investigate the flow of corn-shaped particles in a cylindrical spouted bed with a conical base. The particle motion was modeled by the DEM, and the gas motion by the k-ε two-equation turbulent model. A two-way coupling numerical iterative scheme was used to incorporate the effects of gas-particle interactions in terms of momentum exchange. The corn-shaped particles were constructed by a multisphere method. Drag force, contact force, Saffman lift force, Magnus lift force, and gravitational force acting on each individual particle were considered in establishing the mathematical modeling. Calculations were carried out in a cylindrical spouted bed with an inside diameter of 200 mm, a height of 700 mm, and a conical base of 60 . Comparison of simulations with experiments showed the availability of the multi-sphere method in simulating spouting action with corn-shaped particles, but it depended strongly on the number and the arrangement of the spherical elements. Gas-solid flow patterns, pressure drop, particle velocity and particle concentration at various spouting gas velocity were discussed. The results showed that particle velocity reaches a maximum at the axis and then decreases gradually along the radial direction in the whole bed. Particle concentration increases along the radial direction in the spout region but decreases in the fountain region, while it is nearly constant in the annulus region. Increasing spouting gas velocity leads to larger pressure drop, remarkably increased speed of particle moving upward or downward, but decreased particle concentration.Bing Ren Wenqi Zhong Yu Chen Xi Chen Baosheng Jin Zhulin Yuan Yong Lu 2012Particuology2012,10,5:17
18Endostatin inhibits hypertrophic scarring in a rabbit ear model显示文摘Objective:The present study was designed to use an in vivo rabbit ear scar model to investigate the efficacy of systemic administration of endostatin in inhibiting scar formation.Methods:Eight male New Zealand white rabbits were randomly assigned to two groups.Scar model was established by making six full skin defect wounds in each ear.For the intervention group,intraperitoneal injection of endostatin was performed each day after the wound healed(about 15 d post wounding).For the control group,equal volume of saline was injected.Thickness of scars in each group was measured by sliding caliper and the scar microcirculatory perfusion was assessed by laser Doppler flowmetry on Days 15,21,28,and 35 post wounding.Rabbits were euthanatized and their scars were harvested for histological and proteomic analyses on Day 35 post wounding.Results:Macroscopically,scars of the control group were thicker than those of the intervention group.Significant differences between the two groups were observed on Days 21 and 35(p<0.05).Scar thickness,measured by scar elevation index(SEI) at Day 35 post wounding,was significantly reduced in the intervention group(1.09±0.19) compared with the controls(1.36±0.28).Microvessel density(MVD) observed in the intervention group(1.73±0.94) was significantly lower than that of the control group(5.63±1.78) on Day 35.The distribution of collagen fibers in scars treated with endostatin was relatively regular,while collagen fibers in untreated controls were thicker and showed disordered alignment.Western blot analysis showed that the expressions of type I collagen and Bcl-2 were depressed by injection of endostatin.Conclusions:Our results from the rabbit ear hypertrophic scar model indicate that systemic application of endostatin could inhibit local hypertrophic scar formation,possibly through reducing scar vascularization and angiogenesis.Our results indicated that endostatin may promote the apoptosis of endothelial cells and block their release of platelet-derived growth factor(PDGF) and fibroblast growth factor(FGF),thereby controlling collagen production by fibroblasts.Blood vessel-targeted treatment may be a promising strategy for scar therapy.Hai-tao REN Hang HU Yuan LI Hong-fei JIANG Xin-lei HU Chun-mao HAN 2013Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2013,14,3:17
19A long-term Global LAnd Surface Satellite(GLASS)data-set for environmental studies显示文摘Recently,five Global LAnd Surface Satellite(GLASS)products have been released:leaf area index(LAI),shortwave broadband albedo,longwave broadband emissivity,incident short radiation,and photosynthetically active radiation(PAR).The first three products cover the years 19822012(LAI)and 19812010(albedo and emissivity)at 15 km and 8-day resolutions,and the last two radiation products span the period 20082010 at 5 km and 3-h resolutions.These products have been evaluated and validated,and the preliminary results indicate that they are of higher quality and accuracy than the existing products.In particular,the first three products have much longer time series,and are therefore highly suitable for various environmental studies.This paper outlines the algorithms,product characteristics,preliminary validation results,potential applications and some examples of initial analysis of these products.Shunlin Liang Xiang Zhao Suhong Liu Wenping Yuan Xiao Cheng Zhiqiang Xiao Xiaotong Zhang Qiang Liu Jie Cheng Hairong Tang Yonghua Qu Yancheng Bo Ying Qu Huazhong Ren Kai Yu John Townshend 2013International Journal of Digital Earth2013,6,S01:16
20Activation of sonic hedgehog signaling pathway is an independent potential prognosis predictor in human hepatocellular carcinoma patients显示文摘Objective:The activation of hedgehog(HH) pathway is implicated in the development of human malignancies including hepatocellular carcinoma(HCC).However,the clinical impact of HH activation in HCC patients is still unclear.This study was conducted to confirm whether the expression of HH pathway components was associated with HCC progression and clinical outcome.Methods:This study was a sample-expanded and prolonged follow up of one of our previous studies.It included 46 HCC patients who underwent surgical treatment from 2002 to 2005.The expression of sonic HH(SHH),patched-1(PTCH1),smoothened(SMOH) and glioma-associated oncogene-1(GLI1) genes in tumor and adjacent normal tissues extracted from the patients were examined by reverse transcriptionpolymerase chain reaction(RT-PCR) to explore the relationship between these genes and the clinical prognosis of HCC.Results:The expression levels of SHH,PTCH1,SMOH and GLI1 in HCC tissues were 60.87%,50.00%,32.61% and 54.35%,respectively.The expression levels of SHH-related molecules were relatively intense in cancer tissue,but insignificantly correlated with any clinicopathological factors of tumor.Transcriptional factor GLI1 was the only molecule associated with poor prognosis among the HCC patients.The expression of GLI1 gene in tumor tissues was significantly related with disease-free survival(DFS)(P=0.042) and overall survival(OS)(P=0.030).The simultaneous expression of GLI1 in tumor and adjacent normal liver tissues correlated with DFS(P<0.029) and OS(P<0.025).Conclusions:HH signaling activation is an important event in the development of human HCC.The expression of GLI1 in SHH pathway is possibly involved in HCC progression,which may be a useful prognostic indicator of HCC.Li Che Yan-Hua Yuan Jun Jia Jun Ren 2012Chinese Journal of Cancer Research2012,24,4:15
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