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401篇 您的检索式:作者名="Timothy P"
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1Notch signaling controls chondrocyte hypertrophy via indirect regulation of Sox9显示文摘RBPjk-dependent Notch signaling regulates both the onset of chondrocyte hypertrophy and the progression to terminal chondrocyte maturation during endochondral ossification. It has been suggested that Notch signaling can regulate Sox9 transcription, although how this occurs at the molecular level in chondrocytes and whether this transcriptional regulation mediates Notch control of chondrocyte hypertrophy and cartilage development is unknown or controversial. Here we have provided conclusive genetic evidence linking RBPjk-dependent Notch signaling to the regulation of Sox9 expression and chondrocyte hypertrophy by examining tissuespecific Rbpjk mutant(Prx1Cre;Rbpjkf/f), Rbpjk mutant/Sox9 haploinsufficient(Prx1Cre;Rbpjkf/f;Sox9f/1),and control embryos for alterations in SOX9 expression and chondrocyte hypertrophy during cartilage development. These studies demonstrate that Notch signaling regulates the onset of chondrocyte maturation in a SOX9-dependent manner, while Notch-mediated regulation of terminal chondrocyte maturation likely functions independently of SOX9. Furthermore, our in vitro molecular analyses of the Sox9 promoter and Notch-mediated regulation of Sox9 gene expression in chondrogenic cells identified the ability of Notch to induce Sox9 expression directly in the acute setting, but suppresses Sox9 transcription with prolonged Notch signaling that requires protein synthesis of secondary effectors.Anat Kohn Timothy P Rutkowski Zhaoyang Liu Anthony J Mirando Michael J Zuscik Regis J O'Keefe Matthew J Hilton 2015Bone Research2015,3,3:8
2Are hyoliths Palaeozoic lophophorates?显示文摘The phylogenetic position of hyoliths has long been unsettled,with recent discoveries of a tentaculate feeding apparatus('lophophore')and fleshy apical extensions from the shell('pedicle')suggesting a lophophorate affinity.Here,we describe the first soft parts associated with the feeding apparatus of an orthothecid hyolith,Triplicatella opimus from the Chengjiang biota of South China.The tuft-like arrangement of the tentacles of T.opimus differs from that of hyolithids:suggesting they collected food directly from the substrate.A reassessment of the feeding organ in hyolithids indicates that it does not represent a lophophore and our analysis of the apical structures associated with some orthothecids show that these represent crushed portions of the shell and are not comparable to the brachiopod pedicle.The new information suggests that hyoliths are more likely to be basal members of the lophotrochozoans rather than lophophorates closely linked with the Phylum Brachiopoda.Fan Liu Christian B Skovsted Timothy P Topper Zhifei Zhang Degan Shu 2020National Science Review2020,7,2:5
3Refining pathological evaluation of neoadjuvant therapy for adenocarcinoma of the esophagus显示文摘AIM:To assess tumour regression grade(TRG)and lymph node downstaging to help define patients who benefit from neoadjuvant chemotherapy.METHODS:Two hundred and eighteen consecutive patients with adenocarcinoma of the esophagus or gastro-esophageal junction treated with surgery alone or neoadjuvant chemotherapy and surgery between 2005and 2011 at a single institution were reviewed.Triplet neoadjuvant chemotherapy consisting of platinum,fluoropyrimidine and anthracycline was considered for operable patients(World Health Organization performance status≤2)with clinical stage T2-4 N0-1.Response to neoadjuvant chemotherapy(NAC)was assessed using TRG,as described by Mandard et al.In addition lymph node downstaging was also assessed.Lymph node downstaging was defined by cN1 at diagnosis:assessed radiologically(computed tomography,positron emission tomography,endoscopic ultrasonography),then pathologically recorded as N0 after surgery;ypN0 if NAC given prior to surgery,or pN0if surgery alone.Patients were followed up for 5 years post surgery.Recurrence was defined radiologically,with or without pathological confirmation.An association was examined between t TRG and lymph node downstaging with disease free survival(DFS)and a comprehensive range of clinicopathological characteristics.RESULTS:Two hundred and eighteen patients underwent esophageal resection during the study interval with a mean follow up of 3 years(median follow up:2.552,95%CI:2.022-3.081).There was a 1.8%(n=4)inpatient mortality rate.One hundred and thirty-six(62.4%)patients received NAC,with 74.3%(n=101)of patients demonstrating some signs of pathological tumour regression(TRG 1-4)and 5.9%(n=8)having a complete pathological response.Forty four point one percent(n=60)had downstaging of their nodal disease(cN1 to ypN0),compared to only 15.9%(n=13)that underwent surgery alone(pre-operatively overstaged:cN1 to pN0),(P<0.0001).Response to NAC was associated with significantly increased DFS(mean DFS;TRG 1-2:5.1years,95%CI:4.6-5.6 vs TRG 3-5:2.8 years,95%CI:2.2-3.3,P<0.0001).Nodal down-staging conferred a significant DFS advantage for those patients with a poor primary tumour response to NAC(median DFS;TRG 3-5 and nodal down-staging:5.533 years,95%CI:3.558-7.531 vs TRG 3-5 and no nodal down-staging:1.114 years,95%CI:0.961-1.267,P<0.0001).CONCLUSION:Response to NAC in the primary tumour and in the lymph nodes are both independently associated with improved DFS.Fergus Noble Luke Nolan Adrian C Bateman James P Byrne Jamie J Kelly Ian S Bailey Donna M Sharland Charlotte N Rees Timothy J Iveson Tim J Underwood Andrew R Bateman 2013World Journal of Gastroenterology2013,19,48:4
4Meeting report:a hard look at the state of enamel research显示文摘The Encouraging Novel Amelogenesis Models and Ex vivo cell Lines(ENAMEL) Development workshop was held on 23 June 2017 at the Bethesda headquarters of the National Institute of Dental and Craniofacial Research(NIDCR). Discussion topics included model organisms, stem cells/cell lines, and tissues/3 D cell culture/organoids. Scientists from a number of disciplines,representing institutions from across the United States, gathered to discuss advances in our understanding of enamel, as well as future directions for the field.ophir d klein olivier duverger wendy shaw rodrigo s lacruz derk joester janet moradian-oldak megan k pugach j timothy wright sarah e millar ashok b kulkarni john d bartlett thomas gh diekwisch pamela den besten james p simmer 2017International Journal of Oral Science2017,9,4:3
5Effect of intensive treatment of hyperglycaemia on microvascular outcomes in type 2 diabetes: an analysis of the ACCORD randomised trial显示文摘Faramarz Ismail-Beigi Timothy Craven Mary Ann Banerji Jan Basile Jorge Calles Robert M Cohen Robert Cuddihy William C Cushman Saul Genuth Richard H Grimm Bruce P Hamilton Byron Hoogwerf Diane Karl Lois Katz Armand Krikorian Patrick O'Connor Rodica Pop-Bus 2010The Lancet2010,,9739:2
6Structural and magnetic properties of nanoscale iron oxide particles synthesized in the presence of dextran or polyvinyl alcohol显示文摘Heath P Wanida C Timothy G 2001J Magn Magn Mater2001,225,1:1
7Effect of concomitant antiarrhythmic therapy on survival in patients with implantable cardioverter defibrillators显示文摘HO AT PAI SM TIMOTHY P 2005Pacing Clin Electrophysiol2005,28,7:1
8Fractures with major vas- cular injuries from gunshot wounds : implications of surgical sequence 显示文摘Timothy MAJ MeHenry P John LTC 2002Trauma2002,4,:1
9Body burden measurements and models to assess inhalation exposure to methyl tertiary butyl ether (MTBE)显示文摘Timothy J B James D P David A 1997Air and Waste Manage1997,47,7:1
10Modeling,analysis and testing of autonomous operation of an inverterbased microgrid显示文摘Nagaraju P Milan P Timothy C 2007IEEE Transactions on Power Electronics2007,22,2:1
11Improving truck underhood thermal management through CFD显示文摘Timothy P N Sunil K J 2002SAE Technical Paper Series2002,,:1
12Probabilistic environmental risk of hazardous materials 显示文摘Timothy L Jacobs Vesilind P A 1992Journal of Environmental Engineering1992,118,6:1
13Effective product family design using physical programming显示文摘Achille Messas Michael P Martinez Timothy W Simpson 2002Engineering Optimization2002,,34:1
14Polarization insensitive wavelength conversion by FWM of multiformat DWDM signals using birefringent PCF显示文摘John P M Timothy U H William A 2012IEEE Journal of selected topics in quantum electronics2012,18,2:1
15Identification of human esophageal cancer sub-types by serum protein analysis using MALDI-TOF mass spectroscopy显示文摘Millar Timothy P Karpievitch 2006Gastroenterology2006,130,4:1
16Autonomous vehicle navigation utilizing electrostatic potential fields and fuzzy logic显示文摘Tsourveloudis Nikos C Valavanis Kimon P Hebert Timothy 2001IEEE Transactions on Robtics and Automation2001,17,4:1
17Vibrational spectra and DFT calculations of squalene显示文摘Hye JC Taylor W Timothy P 2013Journal of MolecularStructure2013,1032,:1
18Experimental studies in the LENS supersonic and hypersonic tunnels for hypervelocity vehicle performance and code validation 显示文摘Michael S H Timothy P W Matthew M 2008AIAA2008,2505,:1
19Mobile robot navigation in 2-D dynamic environment using an electrostatic potential field显示文摘Valavanis Kimon P Hebert Timothy Kolluru Ramesh 2000IEEE Transactions on Systems Man and Cybernentics Part A:Systems and Humans2000,30,2:1
20Modeling the role of pay equity perceptions: a field study 显示文摘Summers Timothy P and William H Hendrix 1991Journal of Occupational Psychology1991,64,2:1
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