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429篇 您的检索式:作者名="JAMES T R"
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1Contribution of oxidative stress to pulmonary arterial hypertension显示文摘Recent data implicate oxidative stress as a mediator of pulmonary hypertension (PH) and of the associated pathological changes to the pulmonary vasculature and right ventricle (RV). Increases in reactive oxygen species (ROS), altered redox state, and elevated oxidant stress have been demonstrated in the lungs and RV of several animal models of PH, including chronic hypoxia, monocrotaline toxicity, caveolin-1 knock-out mouse, and the transgenic Ren2 rat which overexpresses the mouse renin gene. Generation of ROS in these models is derived mostly from the activities of the nicotinamide adenine dinucleotide phosphate oxidases, xanthine oxidase, and uncoupled endothelial nitric oxide synthase. As disease progresses circulating monocytes and bone marrow-derived monocytic progenitor cells are attracted to and accumulate in the pulmonary vasculature. Once established, these inflammatory cells generate ROS and secrete mitogenic and fibrogenic cytokines that induce cell proliferation and fibrosis in the vascular wall resulting in progressive vascular remodeling. Deficiencies in antioxidant enzymes also contribute to pulmonary hypertensive states. Current therapies were developed to improve endothelial function, reduce pulmonary artery pressure, and slow the progression of vascular remodeling in the pulmonary vasculature by targeting deficiencies in either NO (PDE-type 5 inhibition) or PGI 2 (prostacyclin analogs), or excessive synthesis of ET-1 (ET receptor blockers) with the intent to improve patient clinical status and survival. New therapies may slow disease progression to some extent, but long term management has not been achieved and mortality is still high. Although little is known concerning the effects of current pulmonary arterial hypertension treatments on RV structure and function, interest in this area is increasing. Development of therapeutic strategies that simultaneously target pathology in the pulmonary vasculature and RV may be beneficial in reducing mortality associated with RV failure.Vincent G DeMarco Adam T Whaley-Connell James R Sowers Javad Habibi Kevin C Dellsperger 2010World Journal of Cardiology2010,2,10:21
2Calcium signaling and T-type calcium channels in cancer cell cycling显示文摘Regulation of intracellular calcium is an important signaling mechanism for cell proliferation in both normal and cancerous cells. In normal epithelial cells, free calcium concentration is essential for cells to enter and accomplish the S phase and the M phase of the cell cycle. In contrast, cancerous cells can pass these phases of the cell cycle with much lower cytoplasmic free calcium concentrations, indicating an alternative mechanism has developed for fulfilling the intracellular calcium requirement for an increased rate of DNA synthesis and mitosis of fast replicating cancerous cells. The detailed mechanism underlying the altered calcium loading pathway remains unclear; however, there is a growing body of evidence that suggests the T-type Ca2+ channel is abnormally expressed in cancerous cells and that blockade of these channels may reduce cell proliferation in addition to inducing apoptosis. Recent studies also show that the expression of T-type Ca2+ channels in breast cancer cells is proliferation state dependent, i.e. the channels are expressed at higher levels during the fast-replication period, and once the cells are in a non-proliferation state, expression of this channel isminimal. Therefore, selectively blocking calcium entry into cancerous cells may be a valuable approach for preventing tumor growth. Since T-type Ca2+ channels are not expressed in epithelial cells, selective T-type Ca2+ channel blockers may be useful in the treatment of certain types of cancers.James T Taylor Xiang-Bin Zeng Jonathan E Pottle Kevin Lee Alun R Wang Stephenie G Yi lennifer A S Scruggs Suresh S Sikka Ming Li 2008World Journal of Gastroenterology2008,14,32:12
3在结肠和直肠的癌症的淋巴节点收获: 当前的考虑显示文摘 The prognostic significance of identifying lymph node(LN) metastases following surgical resection for colon and rectal cancer is well recognized and is reflected in accurate staging of the disease.An established body of evidence exists,demonstrating an association between a higher total LN count and improved survival,particularly for node negative colon cancer.In node positive disease,however,the lymph node ratios may represent a better prognostic indicator,although the impact of this on clinical treatment has yet to be universally established.By extension,strategies to increase surgical node harvest and/or laboratory methods to increase LN yield seem logical and might improve cancer staging.However,debate prevails as to whether or not these extrapolations are clinically relevant,particularly when very high LN counts are sought.Current guidelines recommend a minimum of 12 nodes harvested as the standard of care,yet the evidence for such is questionable as it is unclear whether an increasing the LN count results in improved survival.Findings from modern treatments,including down-staging in rectal cancer using pre-operative chemoradiotherapy,paradoxically suggest that lower LN count,or indeed complete absence of LNs,are associated with improved survival;implying that using a specific number of LNs harvested as a measure of surgical quality is not always appropriate.The pursuit of a sufficient LN harvest represents good clinical practice;however,recent evidence shows that the exhaustive searching for very high LN yields may be unnecessary and has little in? uence on modern approaches to treatment.James R McDonald Andrew G Renehan Sarah T O’Dwyer Najib Y Haboubi 2012World Journal of Gastrointestinal Surgery2012,4,1:8
4Perinatal Listeria monocytogenes susceptibility despite preconceptual priming and maintenance of pathogen-specific CD8^+ T cells during pregnancy显示文摘Listeria monocytogenes (Lm ) 为发展中的胎儿在怀孕和疾病的后果期间是有为全身的母亲的感染的唯一的倾向的一个细胞内部的细菌。给与出生前的 Lm 感染联系的高死亡,为在怀孕的极其脆弱的经期期间扩充保护的免疫的策略着急地被需要。此处,保护由在对随后的剧毒的 Lm 出生前的感染的怀孕被评估以前,管理的稀释 Lm 交谈了。因为显著地更多的细菌从母亲的纸巾被恢复,我们证明对在非怀孕的老鼠的第二等的 Lm 感染的保护严厉地在 allogeneic 怀孕期间被节制,尽管有病原体特定的 CD8 + T 房间的数字、功能的保藏。更重要地,因为各在怀孕和天真的怀孕控制以前与稀释 Lm 接种的老鼠在怀孕期间在 Lm 感染以后从单个 concepti 显示出近完全的胎儿的再吞和病原体恢复, preconceptual priming 不在 utero 侵略或胎儿的消耗量免于。显著地,对有在 allogeneic 怀孕的 preconceptual priming 的出生前的 Lm 感染的保护的缺乏在 syngeneic 怀孕期间被恢复。因此,母亲胎儿的抗原不和在出生前的 Lm 感染以后对胎儿的复杂并发症支配 preconceptual 种痘的低效率,尽管有病原体特定的 CD8 + T 房间的数字、功能的保藏。Dayna R Clark Vandana Chaturvedi Jeremy M Kinder Tony T Jiang Lijun Xin James M Ertelt Sing Sing Way 2014Cellular & Molecular Immunology2014,11,6:3
5Towards a standard diet-induced and biopsy-confirmed mouse model of non-alcoholic steatohepatitis: Impact of dietary fat source显示文摘BACKGROUND The trans-fat containing AMLN(amylin liver non-alcoholic steatohepatitis,NASH)diet has been extensively validated in C57BL/6J mice with or without the Lep^ob/Lep^ob(ob/ob)mutation in the leptin gene for reliably inducing metabolic and liver histopathological changes recapitulating hallmarks of NASH.Due to a recent ban on trans-fats as food additive,there is a marked need for developing a new diet capable of promoting a compatible level of disease in ob/ob and C57BL/6J mice.AIM To develop a biopsy-confirmed mouse model of NASH based on an obesogenic diet with trans-fat substituted by saturated fat.METHODS Male ob/ob mice were fed AMLN diet or a modified AMLN diet with trans-fat(Primex shortening)substituted by equivalent amounts of palm oil[Gubra amylin NASH,(GAN)diet]for 8,12 and 16 wk.C57BL/6J mice were fed the same diets for 28 wk.AMLN and GAN diets had similar caloric content(40%fat kcal),fructose(22%)and cholesterol(2%)level.RESULTS The GAN diet was more obesogenic compared to the AMLN diet and impaired glucose tolerance.Biopsy-confirmed steatosis,lobular inflammation,hepatocyte ballooning,fibrotic liver lesions and hepatic transcriptome changes were similar in ob/ob mice fed the GAN or AMLN diet.C57BL/6J mice developed a mild to moderate fibrotic NASH phenotype when fed the same diets.CONCLUSION Substitution of Primex with palm oil promotes a similar phenotype of biopsyconfirmed NASH in ob/ob and C57BL/6J mice,making GAN diet-induced obese mouse models suitable for characterizing novel NASH treatments.Michelle L Boland Denise Oro Kirstine S T■lb■l Sebastian T Thrane Jens Christian Nielsen Taylor S Cohen David E Tabor Fiona Fernandes Andrey Tovchigrechko Sanne S Veidal Paul Warrener Bret R Sellman Jacob Jelsing Michael Feigh Niels Vrang James L Trevaskis Henrik H Hansen 2019World Journal of Gastroenterology2019,25,33:3
6A comparison of the relative efficiency of ICSI and extended culture with epididymal sperm versus testicular sperm in patients with obstructive azoospermia显示文摘This is a retrospective cohort study comparing blastocyst transfer outcomes following intracytoplasmic sperm injection utilizing epididymal versus testicular sperm for men with obstructive azoospermia.All cases at a single center between 2012 and 2016 were included.Operative approach was selected at the surgeon’s discretion and included microepididymal sperm aspiration or testicular sperm extraction.Blastocyst culture was exclusively utilized prior to transfer.The primary outcome was live birth rate.Secondary outcomes included fertilization rate,blastulation rate,euploidy rate,and implantation rate.A mixed effects model was performed.Seventy-six microepididymal sperm aspiration cases and 93 testicular sperm extraction cases were analyzed.The live birth rate was equivalent(48.6%vs 50.5%,P=0.77).However,on mixed effects model,epididymal sperm resulted in a greater likelihood of fertilization(adjusted OR:1.37,95%CI:1.05–1.81,P=0.02)and produced a higher blastulation rate(adjusted OR:1.41,95%CI:1.1–1.85,P=0.01).As a result,the epididymal sperm group had more supernumerary blastocysts available(4.3 vs 3,P<0.05).The euploidy rate was no different.Pregnancy rates were no different through the first transfer cycle.However,intracytoplasmic sperm injection following microepididymal sperm aspiration resulted in a greater number of usable blastocysts per patient.Thus,the true benefit of epididymal sperm may only be demonstrated via a comparison of cumulative pregnancy rates after multiple transfers from one cohort.Scott J Morin Brent M Hanson Caroline R Juneau Shelby A Neal Jessica N Landis Richard T Scott Jr James M Hotaling 2020Asian Journal of Andrology2020,22,2:2
7A humanized anti-IL-6 antibody (ALD518) in non-small cell lung cancer显示文摘Trevor J Bayliss Jeff T Smith Michael Schuster Konstantin H Dragnev James R Rigas 2011Expert Opinion on Biological Therapy2011,,12:2
8Complete genomes of two clinical Staphylococcus aureus strains:evidence for the rapid evolution of virulence and drug resistance显示文摘Holden MT Feil EJ Lindsay JA Peacock SJ Day NP Enright MC Foster TJ Moore CE Hurst L Atkin R Barron A Bason N Bentley SD Chillingworth C Chillingworth T Churcher C Clark L Corton C Cronin A Doggett J Dowd L Feltwell T Hance Z Harris B Hauser H Holroyd S Jagels K James KD Lennard N Line A Mayes R Moule S Mungall K Ormond D Quail MA Rabbinowitsch E Rutherford K Sanders M Sharp S Simmonds M Stevens K Whitehead S Barrell BG Spratt BG Parkhill J 2004Proc Natl Acad Sci USA2004,101,26:1
9Tensile Testing of EP-823 and HT-9 After Irradiation in STIP Ⅱ 显示文摘Maloy Stuart A Romero T James M R 2006Journal of Nuclear Materials2006,356,123:1
10Induction of collagenase and stromelysin gene expression by mechanic injury in vascular smooth - derived cell Line显示文摘James T W Wagner R White L A 1993J cell physiol1993,157,:1
11Mul- tialternative decision field theory: a dynamic connec- tionist model of decision making显示文摘ROBERT M R JEROME R B JAMES T T 2001Psychological Review2001,108,2:1
12Embrittlement of Irradiated Ferritic/Martensitic Steels in the Absence of Irra diation Hardening 显示文摘Maloy Stuart A Romero T James M R 2008Journal of Nuclear Materials2008,377,3:1
13The control of stearoyl-CoA desaturase by dietary linoleic acid显示文摘Jeffcoat R James A T 1975FEBS Lett1975,85,:1
14Pulmonary toxicity of single wall carbon nano-tubos in mice 7 and 90 days after intratracheal instillation显示文摘LAM C W JAMES J T MCCLUSKEY R 2004Toxicological Sciences2004,77,1:1
15A practical method for calculating largest Lyapunov exponents from small data sets显示文摘Michael T R James J C Carlo J D L 1993Physica D1993,65,2:1
16Genome, transcriptome, and secretome analysis of wood decay fungus Postia placenta supports unique mechanisms of lignocellulose conversion 显示文摘Martinez D Challacombe J Morgenstern 1 Hibbett D Schmoll M Kubicek CP Ferreira P Ruiz-Duenas FJ Martinez AT Kersten P Hammel KE Wymelenberg AV Gaskell J Lindquist E Sabat G BonDurant SS Larrondo LF Canessa P Vicuna R Yadav J Doddapaneni H Subramanian V Pisabarro AG Lavin JL Oguiza JA Master E Henrissat B Coutinho PM Harris P Magnuson JK Baker SE Bruno K Kenealy W Hoegger PJ Kties U Ramaiya P kucas S Salamov A Shapiro H Tu H Chee CL Misra M Xie G Teter S Yaver D James T Mokrejs M Pospisek M Grigoriev IV Brettin T Rokhsar D Berka R Cullen D 2009PNAS2009,106,6:1
17Pulmonary toxicity of single-wall carbon nanotubes in mice 7 and 90 days after intratracheal instillation显示文摘Lam C W James J T McCluskey R 2004Toxicological Sciences2004,77,:1
18Electrophilic bond insertion by cationic nitrogen显示文摘Peter T Lansbury James G Colson Norman R Mancuso 1964American Chemical Society1964,86,:1
19Identification of inport residues in metal-chelate recognition by monoclonal antibodies显示文摘Delehanty James B Jones R M Bishop T C 2003Biochemistry2003,42,14:1
20Distribution system planning in focus显示文摘Ault Graham W Foote Colin E T Mcdonald James R 2002IEEE Power Engineering Review2002,22,1:1
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