维普中文期刊产品整合服务
827篇 您的检索式:作者名="Kenneth A"
    题名 作者 年代 出处 被引量
1Expression of matrix metalloproteinases 2 and 9 in human gastric cancer and superficial gastritis显示文摘AIM:To assess expression of matrix metalloproteinases 2(MMP2)and MMP9 in gastric cancer,superficial gastritis and normal mucosa,and to measure metalloproteinase activity.METHODS:MMP2 and MMP9 mRNA expression was determined by quantitative real-time polymerase chain reaction.Normalization was carried out using three different factors.Proteins were analyzed by quantitative gelatin zymography(qGZ).RESULTS:18S ribosomal RNA(18SRNA)was very highly expressed,while hypoxanthine ribosyltransferase-1(HPRT-1)was moderately expressed.MMP2 was highly expressed,while MMP9 was not detected or lowly expressed in normal tissues,moderately or highly expressed in gastritis and highly expressed in cancer.Relative expression of 18SRNA and HPRT-1 showed no significant differences.Significant differences in MMP2 and MMP9 were found between cancer and normal tissue,but not between gastritis and normal tissue.Absolute quantification of MMP9 echoed this pattern,but differential expression of MMP2 proved conflictive.Analysis by qGZ indicated significant differences between cancer and normal tissue in MMP-2,total MMP-9,250 and 110 kDa bands.CONCLUSION:MMP9 expression is enhanced in gastric cancer compared to normal mucosa;interpretation of differential expression of MMP2 is difficult to establish.Clara Luz Sampieri Sol de la Pea Mariana Ochoa-Lara Roberto Zenteno-Cuevas Kenneth León-Córdoba 2010World Journal of Gastroenterology2010,16,12:46
2Coordinated peak expression of MMP-26 and TIMP-4 in preinvasive human prostate tumor显示文摘因为早察觉和治疗为病人的医药管理是批评的,为早前列腺癌症诊断的新奇简历标记的鉴定是高度重要的。在基础房间层和地下室膜的连续性的混乱为高级职业人员静电干扰 intraepithelial 瘤形成(HGPIN ) 的前进是必要的到在人的前列腺的侵略腺癌。涉及变换到侵略显型的分子是强烈审查的题目。我们以前报导了矩阵 metalloproteinase-26 (MMP-26 ) 经由地下室膜蛋白质并且由激活 MMP-9 的酶原形式的劈开支持人的前列腺癌症房间的侵略。而且,我们发现了 metalloproteinases-4 (TIMP-4 ) 的那个织物禁止者是大多数有势力 MMP-26 的内长的禁止者。这里,我们更高示威(p<0.0001 ) 在 HGPIN 和癌症的 MMP-26 和 TIMP-4 表示,与非肿瘤的 acini 相比。他们的表示层次在 HGPIN 是最高的,但是在一样的纸巾在侵略癌症(为各个的 p<0.001 ) 衰退。连续前列腺癌症织物节染色的 Immunohistochemical 建议 MMP-26 和 TIMP-4 的 colocalization。现在的学习显示 MMP-26 和 TIMP-4 可以在 HGPIN 的变换期间起一个不可分的作用到侵略癌症并且可以也为早前列腺癌症诊断用作标记。房间研究(2006 ) 16:750-758。做 i:10.1038/sj .cr.7310089;出版联机 2006 年 8 月 29 日。Seakwoo Lee Kevin K Desai Kenneth A Iczkowski Robert G Newcomer Kevin J WU Yun-Ge Zhao Winston W Tan Mark D Roycik Qing-Xiang Amy Sang 2006Cell Research2006,16,9:18
3Total knee arthroplasty and fractures of the tibial plateau显示文摘Tibial plateau fractures are common injuries that occur in a bimodal age distribution. While there are various treatment options for displaced tibial plateau fractures, the standard of care is open reduction and internal fixation(ORIF). In physiologically young patients with higher demand and better bone quality, ORIF is the preferred method of treating these fractures. However, future total knee arthroplasty(TKA) is a consideration in these patients as post-traumatic osteoarthritis is a common long-term complication of tibial plateau fractures. In older, lower demand patients, ORIF is potentially less favorable for a variety of reasons, namely fixation failure and the need for delayed weight bearing. In some of these patients, TKA can be considered as primary mode of treatment. This paper will review the literature surrounding TKA as both primary treatment and as a salvage measure in patients with fractures of the tibial plateau. The outcomes, complications, techniques and surgical challenges are also discussed.Kenneth A Softness Ryan S Murray Brian G Evans 2017World Journal of Orthopedics2017,8,2:15
4基于直接正交信号校正的土壤磷和钾VNIR测定研究显示文摘利用可见-近红外光谱(VNIR)检测土壤磷(P)和钾(K)含量存在精度不高的问题。为消除土壤质地、类型、颜色、颗粒大小、形状、密度等对光谱精度的影响,利用VNIR检测土壤P和K,采用直接正交信号校正(DOSC)光谱预处理降低干扰的方法,对美国密苏里州8种类型土壤共1 582个土壤样品、在350-2 500 nm波段内进行VNIR光谱扫描,对光谱进行吸光度、均值归一化、5点均值滤波平滑处理后,分别用DOSC处理和未处理数据建立偏最小二乘回归(PLSR)分析模型对P和K进行预测。实验结果表明,DOSC处理后得到的模型预测精度显著提高,其预测均方根误差(RMSEP)降低21.50%(P)、26.93%(P(0,27))、24.64%(K)和27.67%(K(0,192)),预测决定系数(R2)提高85.76%(P)、108.31%(P(0,27))、59.38%(K)和87.01%(K(0,192)),相对分析误差(RPD)提高27.37%(P)、36.90%(P(0,27))、32.75%(K)和38.29%(K(0,192))。用DOSC算法在多类型土壤的P和K的VNIR测定中,能消除由于土壤质地、类型等引起的噪声信息,提高模型预测精度,为多类型土壤P和K的VNIR测定提供了一种光谱预处理方法。胡国田 何东健 Kenneth A Sudduth 2015农业机械学报2015,46,7:11
5Colorectal cancer in patients under 50 years of age:A retrospective analysis of two institutions' experience显示文摘AIM:To investigate the epidemiological characteristics of colorectal cancer(CRC)in patients under 50 years of age across two institutions.METHODS:Records of patients under age 50 years of age who had CRC surgery over a 16 year period were assessed at two institutions.The following documents where reviewed:admission notes,operative notes,and discharge summaries.The main study variables included:age,presenting symptoms,family history,tumor location,operation,stage/differentiation of disease,and post operative complications.Stage of disease was classified according to the American Joint Committee on Cancer TNM staging system:tumor depth;node status;and metastases.RESULTS:CRC was found in 180 patients under age50 years(87 females,93 males;mean age 41.4±6.2years).Young patients accounted for 11.2%of cases during a 6 year period for which the full data set wasavailable.Eight percent had a 1stdegree and 12%a 2nd degree family CRC history.Almost all patients(94%)were symptomatic at diagnosis;common symptoms included:bleeding(59%),obstruction(9%),and abdominal/rectal pain(35%).Evaluation was often delayed and bleeding frequently attributed to hemorrhoids.Advanced stage CRC(Stage 3 or 4)was noted in 53%of patients.Most tumors were distal to the splenic flexure(77%)and 39%involved the rectum.Most patients(95%)had segmental resections;6 patients had subtotal/total colectomy.Poorly differentiated tumors were noted in 12%and mucinous lesions in 19%of patients of which most had Stage 3 or 4 disease.Twenty-two patients(13%)developed recurrence and/or progression of disease to date.Three patients(ages 42,42and 49 years)went on to develop metachronous primary colon cancers within 3 to 4 years of their initial resection.CONCLUSION:CRC was common in young patients with no family history.Young patients with symptoms merit a timely evaluation to avoid presentation with late stage CRC.Elizabeth A Myers Daniel L Feingold Kenneth A Forde Tracey Arnell Joon Ho Jang Richard L Whelan 2013World Journal of Gastroenterology2013,19,34:9
6Driving vascular endothelial cell fate of human multipotent Isl1 heart progenitors with VEGF modified mRNA显示文摘multipotent 心祖先的不同家庭在哺乳动物的 cardiogenesis 期间在多样的心脏的、光滑的肌肉和 endothelial 房间系的产生起一个中央作用。驾驶这些 multipotent 祖先的房间命运决定的精确 paracrine 信号的鉴定,和小说的开发来临在 vivo 交付这些信号,是向开他们的再生治疗学的潜力的关键步。此处,我们识别了位于早人的胎儿的心(OFT-ECs ) 的流出道的人的心脏的 endothelial 中介的一个家庭,由 Isl1 和 CD144/vWF 的 coexpression 描绘了。由比较人的 OFT-ECs 和非心脏的 EC 表示的 angiocrine 因素,脉管的 endothelial 生长因素( VEGF ) A 作为最富有地表示的因素被识别,并且同种细胞的试金记录了它的能力驱使人的胚胎的干细胞(转换字符)的 endothelial 说明以一种 VEGF 受体依赖者方式导出 Isl1 +祖先。人的 Isl1-ECs (区分开来与导出 hESC 的 ISL1 + 祖先的 endothelial 房间) 以心脏的 endothelial 祖先的表示类似于 OFT-ECs -- 并且 endocardial 房间特定的基因,证实他们的机关特性。决定是否 VEGF -- A 可能是服务一在里面为人的导出转换字符的 Isl1-ECs 的 vivo 房间命运开关,我们证实化学上使用的一条新奇途径作为一个平台修改了 mRNA 为短暂,还在心血管的祖先的 paracrine 因素的高度有效的表示。VEGF 的 Overexpression -- A 支持在 vivo 的人的 Isl1 + 祖先的不仅 endothelial 说明而且嫁接,增长和幸存(减少的 apoptosis ) 。从人的 pluripotent 干细胞的心脏特定的人的 Isl1-ECs 的大规模推导,结合了能力驾驶跟随移植的 endothelial 说明,嫁接,和幸存,在心为脉管的新生建议新奇策略。Kathy O Lui Llor Lang Eduardo A Silva Lei Bu Makoto Sahara Ronald A Li David J Mooney Kenneth R Chien 2013Cell Research2013,23,10:6
7Florid reactive periostitis ossificans of the humerus: Case report and differential diagnosis of periosteal lesions of long bones显示文摘A case of florid reactive periostitis ossificans(RPO) arising in a long bone is presented. This is a rare bone proliferation with a pronounced periosteal reaction. Less than 100 cases have been described in the literature with far fewer outside the bones of the hand, feet, fingers, and toes. Although the etiology is unknown, a relationship to preceding trauma is suggested. The imaging and histologic features show an overlap with other bone lesions including bizarre parosteal osteochondromatous proliferation, subungual exostosis, and malignant surface tumors of bone and cartilage which include, periosteal and parosteal osteosarcoma. It is important to recognize the clinical presentation and diagnostic features of RPO as a benign entity so that it is not mistaken for a more aggressive neoplasm. We present a case of a right distal humeral lesion that on histopathological review revealed florid RPO. This diagnosis was not suspected on imaging studies, but was made on open biopsy of the mass. The patient remains disease free, years postoperatively. In addition to presenting this unique case report, we review the pertinent literature, and offer a differential diagnosis and treatment strategy for its management.Abha Soni Alec Weil Shi Wei Kenneth A Jaffe Gene P Siegal 2015World Journal of Orthopedics2015,6,7:4
8Characterization of the Yeast Transcriptome显示文摘Victor E Velculescu Lin Zhang Wei Zhou Jacob Vogelstein Munira A Basrai Douglas E Bassett Phil Hieter Bert Vogelstein Kenneth W Kinzler 1997Cell1997,,2:4
9WONCA研究论文摘要汇编(一百二十八)——经济增长与儿童早期营养不良的相关性:源于36个低及中收入国家的121个人口学和健康调查证据显示文摘背景人们普遍认为经济增长是改善人们健康状况的必要条件(通常也是充分条件)。此研究针对低收入和中等收入国家的宏观经济增长与早期儿童营养不良的减少的相关性进行评估。方法对1990年1月1日-2011年12月31日的36个国家的121项人口学和健康调查的数据进行分析。样本包含了具有国家代表性的0-35个月儿童的横断面调查数据,结果变量为发育迟滞、低体质量及消瘦。主要自变量为不变价的人均生产总值和校正后的购买力平价。研究采用逻辑回归模式评价人均生产总值的变化与营养不良儿童变化的关联。根据国家固定效应,调查年-固定效应,群组,儿童、母亲和家庭的地区及社会经济复合变量进行模式校正。结果研究样本含发育迟滞儿童462854例;Sebastian Vollmer Kenneth Harttgen Malavika A Subramanyam 周淑新 2014中国全科医学2014,17,19:4
10Evaluation of Burkholdderia cepacia strains:Root colonization of Catharanthus roseus and in vitro inhibition of selected of soil borne fungal pathogens 显示文摘Mansour B Martin A D Kenneth E C 1999Proceedings of the Oklahoma Academy of Science1999,79,:3
11Infection After Spanning External Fixation for High-Energy Tibial Plateau Fractures: Is Pin Site–Plate Overlap a Problem?显示文摘Catherine Laible Emily Earl-Royal Roy Davidovitch Mike Walsh Kenneth A Egol 2012Journal of Orthopaedic Trauma2012,,2:3
12Structure of the Ca2+-dependent PP2A heterotrimer and insights into Cdc6 dephosphorylation显示文摘B″蛋白质磷酸酶 2A (PP2A ) 的 /PR72 家庭一个重要 PP2A 家庭涉及多样的细胞的过程,并且特别地由钙绑定调整了到规章的子单元。在这个家庭的 PR70 子单元与房间部门控制 6 交往(Cdc6 ) ,为 DNA 复制的控制重要的一个房间周期管理者。这里,我们在 2.1 和 2.4 Å 的一个决定报导孤立的 PR72 和 trimeric PR70 holoenzyme 的水晶结构;,分别地并且在 Cdc6 dephosphorylation 的 vitro 描述。holoenzyme 结构表明 PR70 钙绑定主题之一直接联系支架子单元,导致在所有 PP2A holoenzymes 之中的最紧缩的支架子单元符合构造。PR70 也在活跃地点附近区别地绑在催化子单元,它被要求让 PR70 向 Cdc6 提高磷酸酶活动。我们的研究为 B″ 的唯一的规定提供一个结构的基础;由钙离子的 /PR72 holoenzymes,并且在 PP2A holoenzymes 之中为底层特性的精确控制建议机制。Nathan Wlodarchak Feng Guo Kenneth A Satyshur Li Jiang Philip D Jeffrey Tingwan Sun Vitali Stanevich Marc C Mumby Yongna Xing 2013Cell Research2013,23,7:3
13Structural basis of PP2A activation by PTPA, an ATP- dependent activation chaperone显示文摘蛋白质磷酸酶 2A (PP2A ) 的合适的激活催化子单元为复杂 PP2A 规定是中央的并且为细胞的功能的宽广方面是关键的。PP2A 的水晶结构跳了到 PP2A 磷酸酶使活跃之物(PTPA ) 和 ATPγ S 表明 PTPA 与包围 PP2A 的结构的元素做宽广接触活跃地点和 ATP 的腺嘌一半。PTPA 有约束力稳定为激活要求的 apo-PP2A 的蛋白质褶层,并且东方 ATP phosphoryl 组织直接绑在 PP2A 活跃地点。这允许 ATP 调制 PP2A 活跃地点的金属绑定偏爱并且利用 PP2A 为 ATP 水解作用的活跃地点。在 vitro, ATP 有选择地并且急速地提高内长的催化金属离子的绑定,它要求 ATP 水解作用并且为 pSer/Thr-specific 磷酸酶活动的获得是关键的。而且, PP2A 有约束力、 ATP 有约束力在房间增长和幸存为 PTPA 功能被要求。我们的结果与结构的经济和能潜在地用作一个特定的治疗学的目标的一个唯一的 ATP 有约束力的衣袋在 PP2A 激活建议 PTPA 的新奇机制。Feng Guo Vitali Stanevich Nathan Wlodarchak Ritupama Sengupta Li Jiang Kenneth A Satyshur Yongna Xing 2014Cell Research2014,24,2:3
14Intestinal stem cells and the colorectal cancer microenvironment显示文摘Colorectal cancer(CRC)remains a highly fatal condition in part due to its resilience to treatment and its propensity to spread beyond the site of primary occurrence.One possible avenue for cancer to escape eradication is via stem-like cancer cells that,through phenotypic heterogeneity,are more resilient than other tumor constituents and are key contributors to cancer growth and metastasis.These proliferative tumor cells are theorized to possess many properties akin to normal intestinal stem cells.Not only do these CRC'stem'cells demonstrate similar restorative ability,they also share many cell pathways and surface markers in common,as well as respond to the same key niche stimuli.With the improvement of techniques for epithelial stem cell identification,our understanding of CRC behavior is also evolving.Emerging evidence about cellular plasticity and epithelial mesenchymal transition are shedding light onto metastatic CRC processes and are also challenging fundamental concepts about unidirectional epithelial proliferation.This review aims to reappraise evidence supporting the existence and behavior of CRC stem cells,their relationship to normal stem cells,and their possible dependence on the stem cell niche.Bryan A Ong Kenneth J Vega Courtney W Houchen 2014World Journal of Gastroenterology2014,20,8:2
15原位肝移植33例肝动脉及门静脉吻合的体会显示文摘秦锡虎 Williiam Kenneth Washburn Robert Esterl Gregory Abrahamian Glenn A Halff 2005中华外科杂志2005,43,5:2
16Global variation in the frequencies of functionally different catechol- O -methyltransferase alleles显示文摘Meg A Palmatier A.Min Kang Kenneth K Kidd 1999Biological Psychiatry1999,,4:2
17患勃起功能障碍的男性应该检查其心血管问题吗?显示文摘具有重要里程碑意义的Massachusetts老年男性研究结果让我们对勃起功能障碍fED)的发病有了新的理解,同时也让我们认识到ED是一种老龄化疾病。在过去很多年里,ED已经在一些患者中被认为与心血管疾病(CVD)的形成有关。也有证据显示ED与CVD有共同和类似的风险因子。CVD是最容易鉴别的死亡原因之一。预防cVD引发死亡的早期筛查也成为许多学者热捧的领域。因此,很多学科都对“ED是否可以作为CVD的标志”这一提案产生了浓厚的兴趣。事实上,已经有了一些将ED用作CVD发病筛查工具的提案。因此,本文在两个主要数据库中(Pubmed和Cochrane library)进行了全面检索。关键词为:急性心肌梗塞(AMI),冠状动脉疾病(CAD)和勃起功能障碍(ED)。本文浏览了2000年1月至2011年6月期间发表的所有讨论ED和cVD关系的英文文章。对包括所有相关的随机对照试验,队列以及回顾性研究,综述进行分析,以探讨是否所有ED患者应该进行CVD的临床评估。结果显示,在一些患者中,ED与将来CVD的发病有关,但ED不是一个独立的,比传统的Framingham风险因子更好的预测因子。然而,这样的CVD筛查对于患有严重ED的年轻患者以及同时有其他CVD风险因素的患者是有好处的。Kenneth A Ewane Hao-Cheng Lin Run Wang 2012Asian Journal of Andrology2012,14,1:2
18MicroRNA-214 protects the mouse heart from ischemic injury by controlling Ca^sup 2+^ overload and cell death显示文摘Aurora Arin B Mahmoud Ahmed I Luo Xiang Johnson Brett A van Rooij Eva Matsuzaki Satoshi Humphries Kenneth M Hill Joseph A Bassel-Duby Rhonda Sadek Hesham A Olson Eric N 2012EN2012,,4:2
19Resource assessment methodologies: Current status and future direction显示文摘Meneley Robert A Calverley Alfred E Logan Kenneth G 2003AAPG Bulletin2003,87,4:1
20Relationship Quality in Services Selling:An Interpersonal Influence Perspective显示文摘CROSBY LAWRENCE A KENNETH R EVANS DEBORAH COWLES 1990Journal of Marketing1990,,54:1
返回顶部 每页显示:
共42页 首页 上一页 第1页 下一页 末页 /42 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费