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69篇 您的检索式:作者名="JASON A C"
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1The wonders of BMP9:From mesenchymal stem cell differentiation,angiogenesis,neurogenesis,tumorigenesis,and metabolism to regenerative medicine显示文摘Although bone morphogenetic proteins(BMPs)initially showed effective induction of ectopic bone growth in muscle,it has since been determined that these proteins,as members of the TGF-b superfamily,play a diverse and critical array of biological roles.These roles include regulating skeletal and bone formation,angiogenesis,and development and homeostasis of multiple organ systems.Disruptions of the members of the TGF-b/BMP superfamily result in severe skeletal and extra-skeletal irregularities,suggesting high therapeutic potential from understanding this family of BMP proteins.Although it was once one of the least characterized BMPs,BMP9 has revealed itself to have the highest osteogenic potential across numerous experiments both in vitro and in vivo,with recent studies suggesting that the exceptional potency of BMP9 may result from unique signaling pathways that differentiate it from other BMPs.The effectiveness of BMP9 in inducing bone formation was recently revealed in promising experiments that demonstrated efficacy in the repair of critical sized cranial defects as well as compatibility with bone-inducing bio-implants,revealing the great translational promise of BMP9.Furthermore,emerging evidence indicates that,besides its osteogenic activity,BMP9 exerts a broad range of biological functions,including stem cell differentiation,angiogenesis,neurogenesis,tumorigenesis,and metabolism.This review aims to summarize our current understanding of BMP9 across biology and the body.Sami Mostafa Mikhail Pakvasa Elam Coalson Allen Zhu Alex Alverdy Hector Castillo Jiaming Fan Alex Li Yixiao Feng Di Wu Elliott Bishop Scott Du Mia Spezia Alissa Li Ofir Hagag Alison Deng Winny Liu Mingyang Li Sherwin S·Ho Aravind Athiviraham Michael J·Lee Jennifer Moriatis Wolf Guillermo A·Ameer Hue H·Luu Rex C·Haydon Jason Strelzow Kelly Hynes Tong-Chuan He Russell R·Reid 2019Genes & Diseases2019,6,3:15
2Free-breathing radial volumetric interpolated breathhold examination vs breath-hold cartesian volumetric interpolated breath-hold examination magnetic resonance imaging of the liver at 1.5T显示文摘AIM: To compare breath-hold cartesian volumetric interpolated breath-hold examination(cVIBE) and freebreathing radial VIBE(rVIBE) and determine whether rVIBE could replace cVIBE in routine liver magnetic resonance imaging(MRI).METHODS: In this prospective study, 15 consecutive patients scheduled for routine MRI of the abdomen underwent pre- and post-contrast breath-hold cVIBE imaging(19 s acquisition time) and free-breathing rVIBE imaging(111 s acquisition time) on a 1.5T Siemens scanner. Three radiologists with 2, 4, and 8 years post-fellowship experience in abdominal imaging evaluated all images. The radiologists were blinded to the sequence types, which were presented in a random order for each patient. For each sequence, the radiologists scored the cVIBE and rVIBE images for liver edge sharpness, hepatic vessel clarity, presence of artifacts, lesion conspicuity, fat saturation, and overall image quality using a five-point scale. RESULTS: Compared to rVIBE, cVIBE yielded significantly(P < 0.001) higher scores for liver edge sharpness(mean score, 3.87 vs 3.37), hepatic-vessel clarity(3.71 vs 3.18), artifacts(3.74 vs 3.06), lesion conspicuity(3.81 vs 3.2), and overall image quality(3.91 vs 3.24). cVIBE and rVIBE did not significantly differ in quality of fat saturation(4.12 vs 4.03, P = 0.17). The inter-observer variability with respect to differences between rVIBE and cVIBE scores was close to zero compared to random error and inter-patient variation. Quality of rVIBE images was rated as acceptable for all parameters. CONCLUSION: rVIBE cannot replace cVIBE in routine liver MRI. At 1.5T, free-breathing rVIBE yields acceptable, although slightly inferior image quality compared to breath-hold cVIBE.Sireesha Yedururi HyunSeon C Kang Wei Wei Nicolaus A Wagner-Bartak Leonardo P Marcal R Jason Stafford Brandy J Willis Janio Szklaruk 2016World Journal of Radiology2016,8,7:9
3Clinical outcomes following salvage Gamma Knife radiosurgery for recurrent glioblastoma显示文摘Glioblastoma multiforme(GBM) is the most common malignant primary brain tumor with a survival prognosis of 14-16 mo for the highest functioning patients. Despite aggressive, multimodal upfront therapies, the majority of GBMs will recur in approximately six months. Salvage therapy options for recurrent GBM(r GBM) are an area of intense research. This study compares recent survival and quality of life outcomes following Gamma Knife radiosurgery(GKRS) salvage therapy. Following a Pub Med search for studies usingGKRS as salvage therapy for malignant gliomas, nine articles from 2005 to July 2013 were identified which evaluated rG BM treatment. In this review, we compare overall survival following diagnosis, overall survival following salvage treatment, progression-free survival, time to recurrence, local tumor control, and adverse radiation effects. This report discusses results for rG BM patient populations alone, not for mixed populations with other tumor histology grades. All nine studies reported median overall survival rates(from diagnosis, range:16.7-33.2 mo; from salvage, range:9-17.9 mo). Three studies identified median progression-free survival(range:4.6-14.9 mo). Two showed median time to recurrence of GBM. Two discussed local tumor control. Six studies reported adverse radiation effects(range:0%-46% of patients). The greatest survival advantages were seen in patients who received GKRS salvage along with other treatments, like resection or bevacizumab, suggesting that appropriately tailored multimodal therapy should be considered with each rG BM patient. However, there needs to be a randomized clinical trial to test GKRS for rG BM before the possibility of selection bias can be dismissed.Erik W Larson Halloran E Peterson Wayne T Lamoreaux Alexander R MacKay Robert K Fairbanks Jason A Call Jonathan D Carlson Benjamin C Ling John J Demakas Barton S Cooke Christopher M Lee 2014World Journal of Clinical Oncology2014,5,2:5
4Brain-derived neurotrophic factor and inflammation in depression:Pathogenic partners in crime?显示文摘Major depressive disorder is a debilitating disorder affecting millions of people each year.Brain-derived neurotrophic factor(BDNF)and inflammation are two prominent biologic risk factors in the pathogenesis of depression that have received considerable attention.Many clinical and animal studies have highlighted associations between low levels of BDNF or high levels of inflammatory markers and the development of behavioral symptoms of depression.However,less is known about potential interaction between BDNF and inflammation,particularly within the central nervous system.Emerging evidence suggests that there is bidirectional regulation between these factors with important implications for the development of depressive symptoms and antidepressant response.Elevated levels of inflammatory mediators have been shown to reduce expression of BDNF,and BDNF may play an important negative regulatory role on inflammation within the brain.Understanding this interaction more fully within the context of neuropsychiatric disease is important for both developing a fuller understanding of biological pathogenesis of depression and for identifying novel therapeutic opportunities.Here we review these two prominent risk factors for depression with a particular focus on pathogenic implications of their interaction.Grace A Porter Jason C O’Connor 2022World Journal of Psychiatry2022,12,1:4
5Murine hepatocellular carcinoma derived stem cells reveal epithelial-to-mesenchymal plasticity显示文摘AIM To establish a model to enrich and characterize stemlike cells from murine normal liver and hepatocellular carcinoma(HCC) cell lines and to further investigate stem-like cell association with epithelial-to-mesenchymal transition(EMT).METHODS In this study,we utilized a stem cell conditioned serumfree medium to enrich stem-like cells from mouse HCC and normal liver cell lines,Hepa 1-6 and AML12,respectively.We isolated the 3-dimensional spheres and assessed their stemness characteristics by evaluating theRNA levels of stemness genes and a cell surface stem cell marker by quantitative reverse transcriptase-PCR(q RTPCR).Next,we examined the relationship between stem cells and EMT using q RT-PCR.RESULTS Three-dimensional spheres were enriched by culturing murine HCC and normal hepatocyte cell lines in stem cell conditioned serum-free medium supplemented with epidermal growth factor,basic fibroblast growth factor and heparin sulfate.The 3-dimensional spheres had enhanced stemness markers such as Klf4 and Bmi1 and hepatic cancer stem cell(CSC) marker Cd44 compared to parental cells grown as adherent cultures.We report that epithelial markers E-cadherin and ZO-1 were downregulated,while mesenchymal markers Vimentin and Fibronectin were upregulated in 3-dimensional spheres.The 3-dimensional spheres also exhibited changes in expression of Snai,Zeb and Twist family of EMT transcription factors.CONCLUSION Our novel method successfully enriched stem-like cells which possessed an EMT phenotype.The isolation and characterization of murine hepatic CSCs could establish a precise target for the development of more effective therapies for HCC.Aparna Jayachandran Ritu Shrestha Bijay Dhungel I-Tao Huang Marianna Yumi Kawashima Vasconcelos Brian J Morrison Charmaine A Ramlogan-Steel Jason C Steel 2017World Journal of Stem Cells2017,9,9:4
6Some electrical effects of the adsorption of water vapour by anodized aluminum 显示文摘JASON A C WOOD J L 1955Proceedings of the Physical Society1955,,68:1
7Image quality of sparse -aperture designs for remote sensing显示文摘Robert D F Theodore A T Jason R C 2002Optical Engineering2002,41,8:1
8显示文摘Ansbacher F Jason A C 1953Nature1953,171,:1
9Recent advance in techniques for hyperspectral image processing显示文摘Antonio P Jon A B Joseph W B Jason B Lorenzo B Gustavo C V Jocelyn C Mathieu F Paolo G Anthony G Mattia M James C T Giovanna T 2009Remote Sensing of Environment2009,113,:1
10A method for determining the free (unbound) concentration of ten beta - laetam antibiotics in human plasma using high performance liquid chro- matography with ultraviolet detection显示文摘Scott E Briscoe Brett C McWhinney Jeffrey Lipman Jason A 2012Journal of Chromatography B2012,907,:1
11Specific contact resistivity of tunnel barrier contacts used for Fermi level depinning显示文摘ROY A M JASON L J Y SARASWAT K C 2010IEEE Electron Device Letters2010,31,10:1
12A deterministic model for monophasic growth of batch cultures of bacteria 显示文摘Jason A C 1983Antonie van Leeuwenhoek1983,49,:1
13Possible role of climate in the collapse of classic Maya civilization 显示文摘David A H Jason H C Mark B 1995Nature1995,375,:1
14Climate variability on the Yucatan peninsula (Mexico) during the past 3500 years, andimplications for Maya cultural evolution 显示文摘Jason H C Danvid A H 1996Quaternary Research1996,46,:1
15Deposition and annealing of lead scandium tantalite thin films for high performance thermal detector arrays 显示文摘MIKE A T PAUL P D JASON C J 1999Integrated Ferroelectrics1999,25,:1
16Automated interpolation of two-dimensional seismic grids into three-dimensional data volume显示文摘Jason ChinSen Kao J C Schneider W A 1990Geophysics1990,55,4:1
17Deposition and annealing of lead scandium tantalate thin films for high performance thermal detector arrays显示文摘Mike A T Paul P D Jason C J 1999Integrated Ferroelectrics1999,25,:1
18Diagnosis and Treatment of Viral Myocarditis显示文摘Jason C Schultz MD Anthony A 0,,11:1
19Trapping effects and microwave power performance in AIGaN/GaN HEMTs 显示文摘Steven C Binari Kiki Ikossi Jason A Roussos 2001IEEE Transactions on Electron Devices2001,48,3:1
20X-Ray Absorp-tion Fine Structure Characterization of the Local Structure ofFe in Fe-ZSM-5 显示文摘Sun H C Benjamin R W Jason A R 2003J Phys Chem B2003,107,11:1
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