151
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Cao D, Chen F, Rao M, Ye J, Wong T, Mehta V, Shepard D. Dosimetric Benefit of Non-coplanar VMAT Delivery. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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152
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Cao D, Chen F, Rao M, Ye J, Shepard D. SU-GG-T-138: Dosimetric Benefits of Non-Coplanar Arcs in VMAT Delivery for Intracranial Targets. Med Phys 2010. [DOI: 10.1118/1.3468528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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153
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Chen F, Rao M, McCune K, Ye J, Cao D, Mehta V, Shepard D. SU-GG-T-574: When Is Fixed Field IMRT Superior to VMAT? Med Phys 2010. [DOI: 10.1118/1.3468972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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154
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Shepard D, Cao D, Mehta V, Chen F, Rao M, Wong T. SU-GG-T-151: Initial Clinical Experience with Monaco VMAT. Med Phys 2010. [DOI: 10.1118/1.3468541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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155
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Rao M, Wu J, Cao D, Ye J, Chen F, Wong T, Mehta V, Shepard D. MO-D-BRB-02: Investigation of the Interplay Effect between Field Segments and Tumor Motion during VMAT and IMRT Delivery. Med Phys 2010. [DOI: 10.1118/1.3469054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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156
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Chen F, Rao M, Ye J, Wu J, Wong T, Shepard D, Cao D. SU-GG-T-217: Can Two Dimensional Diode Arrays Serve as an Effective Tool for VMAT Quality Assurance? Med Phys 2010. [DOI: 10.1118/1.3468607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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157
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Cao D, Rao M, Chen F, Ye J, Shepard D. SU-GG-T-219: Comparison of Techniques to Simulate VMAT for Matching Delivery to Dose Calculation. Med Phys 2010. [DOI: 10.1118/1.3468609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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158
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Lee BB, Sun H, Cao D, Zaidi Q. Does static contrast enhance contrast sensitivity? J Vis 2010. [DOI: 10.1167/8.17.67] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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159
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Zele AJ, Cao D, Pokorny J. Dark-adapted rods alter cone temporal impulse response functions. J Vis 2010. [DOI: 10.1167/6.13.68] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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160
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Cao D, Zele AJ, Smith VC, Pokorny J. S-cone discrimination with spatial and temporal chromatic contrast. J Vis 2010. [DOI: 10.1167/6.13.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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161
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Cao D, Zele AJ, Pokorny J. Linking impulse response functions to reaction time: Rod and cone rt data and a neural model. J Vis 2010. [DOI: 10.1167/6.6.1003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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162
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Mans RA, Chowdhury N, Cao D, McMahon LL, Li L. Simvastatin enhances hippocampal long-term potentiation in C57BL/6 mice. Neuroscience 2009; 166:435-44. [PMID: 20040368 DOI: 10.1016/j.neuroscience.2009.12.062] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2009] [Revised: 12/23/2009] [Accepted: 12/23/2009] [Indexed: 12/28/2022]
Abstract
Statins inhibit 3-hydroxy-3-methylglutaryl CoA reductase, the rate-limiting enzyme in the cholesterol biosynthetic pathway, and they are widely used to control plasma cholesterol levels and prevent cardiovascular disease. However, emerging evidence indicates that the beneficial effects of statins extend to the CNS. Statins have been shown to improve the outcome of stroke and traumatic brain injury, and statin use has been associated with a reduced prevalence of Alzheimer's disease (AD) and dementia. However, prospective studies with statins in AD have produced mixed results. Recently, we reported that simvastatin, a widely used statin in humans, enhances learning and memory in non-transgenic mice as well as in transgenic mice with AD-like pathology on a mixed genetic background. However, the cellular and molecular mechanisms underlying the beneficial effects of simvastatin on learning and memory remain elusive. The present study was undertaken to investigate the effect of acute simvastatin treatment on hippocampal long-term potentiation (LTP), a cellular model of learning and memory, in brain slices from C57BL/6 mice. Our results demonstrate that a prolonged in vitro simvastatin treatment for 2-4 h, but not a short-term 20-min exposure, significantly increases the magnitude of LTP at CA3-CA1 synapses without altering basal synaptic transmission or the paired-pulse facilitation ratio in hippocampal slices. Furthermore, we show that phosphorylation of Akt (protein kinase B) is increased significantly in the CA1 region following 2-hour treatment with simvastatin, and that inhibition of Akt phosphorylation suppresses the simvastatin-induced enhancement of LTP. These findings suggest activation of Akt as a molecular pathway for augmented hippocampal LTP by simvastatin treatment, and implicate enhancement of hippocampal LTP as a potential cellular mechanism underlying the beneficial effects of simvastatin on cognitive function.
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163
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Lee B, Sun H, Cao D. A new view of receptive field structure of midget ganglion cells. J Vis 2009. [DOI: 10.1167/9.14.81] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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164
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Cao D, Pokorny J. Isolated mesopic rod and cone electroretinograms realized with a four-primary photostimulating methodology. J Vis 2009. [DOI: 10.1167/9.14.32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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165
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Chen F, Rao M, Ye J, Shepard D, Cao D. Techniques for Improving Delivery Accuracy and Efficiency of VMAT. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.1616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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166
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Ye J, Chen F, Rao M, Takamiya R, Cao D. Impact of Translational and Rotational Target Motion during Hypofractionated Prostate Radiotherapy. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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167
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Rao M, Yang W, Chen F, Sheng K, Ye J, Vivek M, Shepard D, Cao D. Evaluation of Arc-based Intensity Modulated Radiotherapy for Head and Neck Cancer. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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168
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Marquard K, Cao D, Huettner P, Rabinov A, Jungheim E, Ratts V. Frequency of oocytes and primordial follicles in gonadectomy tissue samples from patients with gonadal dysgenesis. Fertil Steril 2009. [DOI: 10.1016/j.fertnstert.2009.07.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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169
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Liu RM, van Groen T, Katre A, Cao D, Kadisha I, Ballinger C, Wang L, Carroll SL, Li L. Knockout of plasminogen activator inhibitor 1 gene reduces amyloid beta peptide burden in a mouse model of Alzheimer's disease. Neurobiol Aging 2009; 32:1079-89. [PMID: 19604604 DOI: 10.1016/j.neurobiolaging.2009.06.003] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2008] [Revised: 05/03/2009] [Accepted: 06/11/2009] [Indexed: 12/21/2022]
Abstract
Accumulation of amyloid beta peptide (Aβ) in the brain is a pathological hallmark of Alzheimer's disease (AD); the underlying mechanism, however, is not well understood. In this study, we show that expression of plasminogen activator inhibitor 1 (PAI-1), a physiological inhibitor of tissue type and urokinase type plasminogen activators (tPA and uPA), increases with age in the brain of wild type and Aβ precursor protein-presenilin 1 (APP/PS1) transgenic mice as well as in AD patients. Most importantly, we show that knocking out the PAI-1 gene dramatically reduces Aβ burden in the brain of APP/PS1 mice but has no effect on the levels of full-length APP, alpha or beta C-terminal fragments. Furthermore, we show that knocking out the PAI-1 gene leads to increases in the activities of tPA and plasmin, and the plasmin activity inversely correlates with the amounts of SDS insoluble Aβ40 and Aβ42. Together, these data suggest that increased PAI-1 expression/activity contributes importantly to Aβ accumulation during aging and in AD probably by inhibiting plasminogen activation and thus Aβ degradation.
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170
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Best JH, Boye KS, Rubin RR, Cao D, Kim TH, Peyrot M. Improved treatment satisfaction and weight-related quality of life with exenatide once weekly or twice daily. Diabet Med 2009; 26:722-8. [PMID: 19573122 PMCID: PMC2776933 DOI: 10.1111/j.1464-5491.2009.02752.x] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
AIMS To assess treatment satisfaction and weight-related quality of life (QOL) in subjects with Type 2 diabetes treated with exenatide once weekly (QW) or twice daily (BID). METHODS In this 52-week randomized, multi-centre, open-label study, 295 subjects managed with diet and exercise and/or oral glucose-lowering medications received either exenatide QW or BID during weeks 1-30; thereafter, subjects receiving exenatide BID were switched to exenatide QW, with 258 total subjects receiving exenatide QW during weeks 30-52. Diabetes Treatment Satisfaction Questionnaire-status (DTSQ-s) and Impact of Weight on Quality of Life-Lite (IWQOL-Lite) were assessed at baseline and weeks 30 and 52. Mean group changes from baseline to week 30 were estimated by ancova; changes from week 30 to week 52 were assessed by Student's t-test. RESULTS Statistically significant improvements from baseline to week 30 were observed in both treatment groups for DTSQ-s and IWQOL-Lite measures, with significantly greater reduction in perceived frequency of hyperglycaemia and greater satisfaction with continuing treatment in the QW group compared with the BID group. Effect sizes for change in DTSQ-s total scores were 0.84 QW, 0.64 BID; for IWQOL-Lite: 0.96 QW, 0.82 BID. Treatment satisfaction and QOL improved significantly between weeks 30 and 52 for those switching from BID to QW. Occurrence of adverse events did not affect patients' improvements in treatment satisfaction and QOL. CONCLUSIONS Patients treated with exenatide QW or BID experienced significant and clinically meaningful improvements in treatment satisfaction and QOL. Patients who switched from exenatide BID to exenatide QW administration reported further significant improvements.
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171
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Rao M, Wong T, Cao D, Chen F, Ye J, Mehta V, Shepard D. SU-FF-T-157: A Comparison of Treatment Planning and Delivery of VMAT Using Anatomy-Based and Fluence-Based Inverse Planning with Step and Shoot IMRT. Med Phys 2009. [DOI: 10.1118/1.3181631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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172
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Chen F, Rao M, Ye J, Shepard D, Cao D. SU-FF-T-154: Balancing Plan Quality, Delivery Accuracy and Efficiency in VMAT. Med Phys 2009. [DOI: 10.1118/1.3181628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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173
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Afghan MKN, Eulau S, Morris A, Hallam P, Ye J, Wong T, Cao D, Zeller T, Mate T, Shepard D. TH-C-303A-01: Initial Clinical Experience with Electromagnetic Localization and Tracking for External Beam Partial Breast Irradiation. Med Phys 2009. [DOI: 10.1118/1.3182625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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174
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Cao D, Chen F, Rao M, Afghan M, Ye J, Shepard D. SU-DD-A1-05: Study of VMAT Plan QA Using Film, Diode Based, and Ion Chamber Based QA Systems. Med Phys 2009. [DOI: 10.1118/1.3181073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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175
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Shepard D, Cao D, Rao M, Chen F, Afghan M, Ye J, Wong T, Mehta V. SU-FF-T-141: Initial Clinical Experience with Elekta VMAT. Med Phys 2009. [DOI: 10.1118/1.3181615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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176
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Cao D, Rao M, Chen F, Ye J, Luan S, Shepard D. SU-FF-T-222: A Novel Approach to Machine Specific QA for Volumetric Modulated Arc Therapy. Med Phys 2009. [DOI: 10.1118/1.3181698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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177
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Chen F, Rao M, Ye J, Luan S, Shepard D, Cao D. MO-D-BRB-01: Study of Systemic and Random Errors On VMAT and IMRT Plan Quality and Deliver Accuracy. Med Phys 2009. [DOI: 10.1118/1.3182211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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178
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Afghan MKN, Cao D, Earl M, Van Liew S, Naqvi S, D'Souza W, Shepard D. SU-FF-T-179: Evaluation of An IMRT Planning Technique to Incorporate Intrafraction Organ Motion Using Rigid-Body Tumor Modeling. Med Phys 2009. [DOI: 10.1118/1.3181654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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179
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Ye J, Rao M, Chen F, Cao D. SU-DD-A1-01: Improving Delivery Accuracy of Volumetric Modulated Arc Therapy (VMAT). Med Phys 2009. [DOI: 10.1118/1.3181069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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180
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Rao M, Yang W, Sheng K, Chen F, Ye J, Mehta V, Shepard D, Cao D. SU-FF-T-123: Comparison of Elekta VMAT with Tomotherapy: Plan Quality, Delivery Efficiency and Accuracy. Med Phys 2009. [DOI: 10.1118/1.3181596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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181
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Cao D, Cai MQ, Zheng Y, Hu WY. First-principles study for vacancy-induced magnetism in nonmagnetic ferroelectric BaTiO3. Phys Chem Chem Phys 2009; 11:10934-8. [DOI: 10.1039/b908058a] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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182
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Raghavan S, Cao D, Widhe M, Roth K, Herrath J, Engström M, Roncador G, Banham AH, Trollmo C, Catrina AI, Malmström V. FOXP3 expression in blood, synovial fluid and synovial tissue during inflammatory arthritis and intra-articular corticosteroid treatment. Ann Rheum Dis 2008; 68:1908-15. [PMID: 19066178 DOI: 10.1136/ard.2008.100768] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To analyse the distribution of FOXP3+CD25+CD4+ regulatory T cells (Treg) in peripheral blood, synovial fluid and tissue of patients with rheumatic disease during relapse and after local treatment. METHODS FOXP3 expression was assessed by flow cytometry, immunohistochemistry, immunofluorescence and real-time polymerase chain reaction (RT-PCR). The functional suppressive capacity of Treg was analysed after co-culture with effector CD4+CD25- T cells through assessment of proliferation and cytokine secretion. RESULTS It was shown that FOXP3 protein and mRNA expression in synovial fluid T cells was not confined solely to CD25(bright) T cells as seen in blood, but included CD25(intermediate) and even CD25(neg) T cells. Indeed, synovial fluid CD25(high) T cells showed similar suppressive capacity as CD25(bright) T cells, indicating the presence of functional Treg in T cells with lower intensity of CD25. In synovial tissue, FOXP3+ cells were present in low numbers within T-cell infiltrates and decreased further after intra-articular glucocorticosteroid administration, in parallel with the general reduction in inflammation. CONCLUSIONS Identification of synovial fluid FOXP3+ Treg with varying intensities of CD25 opens up possibilities for thorough characterisation of this important T-cell subset in the inflammatory compartment. However, only scarce synovial membrane expression of FOXP3 was found even in the absence of overt inflammation, suggesting that the synovial membrane is a site that would benefit therapeutically from Treg expansion.
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183
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Sonabend AM, Ulasov IV, Han Y, Rolle CE, Nandi S, Cao D, Tyler MA, Lesniak MS. Biodistribution of an oncolytic adenovirus after intracranial injection in permissive animals: a comparative study of Syrian hamsters and cotton rats. Cancer Gene Ther 2008; 16:362-72. [PMID: 19011597 DOI: 10.1038/cgt.2008.80] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Conditionally replicative adenoviruses (CRAds) are often evaluated in mice; however, normal and cancerous mouse tissues are poorly permissive for human CRAds. As the cotton rat (CR) is a semipermissive animal and the Syrian hamster (SH) is a fully permissive model for adenoviral replication, we compared them in a single study following intracranial (i.c.) injection of a novel glioma-targeting CRAd. Viral genomic copies were quantified by real-time PCR in brain, blood, liver and lung. The studies were corroborated by immunohistochemical, serological and immunological assays. CR had a multiple log higher susceptibility for adenoviral infection than SH. A similar amount of genomic copies of CRAd-Survivin-pk7 and human adenovirus serotype 5 (AdWT) was found in the brain of CR and in all organs from SH. In blood and lung of CR, AdWT had more genomic copies than CRAd-Survivin-pk7 in some of the time points studied. Viral antigens were confirmed in brain slices, an elevation of serum transaminases was observed in both models, and an increase in anti-adenoviral antibodies was detected in SH sera. In conclusion, CR represents a sensitive model for studying biodistribution of CRAds after i.c. delivery, allowing for the detection of differences in the replication of CRAd-Survivin-pk7 and AdWT that were not evident in SH.
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184
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Liu A, Song W, Cao D, Liu X, Jia Y. Growth inhibition and apoptosis of human leukemia K562 cells induced by seleno-short-chain chitosan. ACTA ACUST UNITED AC 2008; 30:181-6. [PMID: 18597001 DOI: 10.1358/mf.2008.30.3.1213209] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
In this article, the in vitro effects of seleno-short-chain chitosan (SSCC, molecular weight between 5,000 and 10,000 Da) on the proliferation of human leukemia K562 cells were investigated to illustrate the possible mechanisms involved. 3-[4,5-Dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide (MTT) assays showed that short-chain chitosan significantly suppressed the growth of K562 cells in a dose-dependent and time-dependent manner, although normal mouse embryonic fibroblasts NIH3T3 were viable after the same treatment. Cell growth inhibitory rate could reach 95% after exposure with more than 100 microg/ml SSCC for 72 h. Flow cytometry analysis revealed that treatment of K562 cells with SSCC resulted in the accumulation of cells in the G(2)/M phase. The growth inhibition of K562 cells after treatment with SSCC was subsequently associated with the induction of apoptosis, as evidenced by (1) the typical apoptotic morphologic changes measured by a fluorescence microscope, (2) the internucleosomal DNA fragmentation into a ladder determined by agarose gel electrophoresis and (3) the occurrence of sub-G(0)/G(1) phase cells analyzed by flow cytometry. All these results indicated that SSCC may have therapeutic potential in human leukemia treatment.
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185
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Afghan M, Cao D, Mehta V, Wong T, Ye J, Shepard D. Volumetric Modulated Arc Therapy for Prostate Cancer. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.362] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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186
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Ye J, Wong T, Cao D, Afghan M, Shepard D, Mehta V. Is it Necessary to Acquire Post Shift Verification Cone Beam CT? Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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187
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Wong T, McCune K, Ye J, Cao D, Afghan M, Shepard D, Mehta V. Evaluation of Tumor Response and an Adaptive Treatment Strategy in Lung Radiotherapy using Cone-beam CT. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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188
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Shepard D, Cao D, Afghan M, Mehta V. Dysphagia Optimized Head and Neck Volumetric Modulated Arc Therapy. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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189
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Cao D, Afghan M, Ye J, Wong T, Mehta V, Shepard D. Treatment Planning and Delivery of Volume Modulated Arc Therapy (VMAT). Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.824] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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190
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Shepard DM, Cao D, Afghan MKN. TH-D-AUD B-03: Initial Experience with the Delivery of Volumetric Modulated Arc Therapy. Med Phys 2008. [DOI: 10.1118/1.2962905] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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191
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Cao D, Afghan M, Ye J, Wong TP, Shepard DM. MO-D-351-06: A Generalized Inverse Planning Tool for Arc-Based IMRT Delivery. Med Phys 2008. [DOI: 10.1118/1.2962357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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192
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Afghan MKN, Cao D, Mehta V, Shepard D. TU-D-AUD B-01: Volumetric Modulated Arc Therapy for Head & Neck Cancer. Med Phys 2008. [DOI: 10.1118/1.2962573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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193
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Cao D, Afghan M, Ye J, Wong T, Shepard D. TH-D-AUD B-01: Comparison of Single-Arc and Multiple-Arc Approaches for Delivering of Volumetric Modulated Arc Therapy. Med Phys 2008. [DOI: 10.1118/1.2962903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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194
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Hachemi M, Cannesson M, Vu Thi Z, Cao D, Lehot JJ, Bastien O. Convulsions après chirurgie cardiaque : étude cas-témoins sur une année. Ing Rech Biomed 2007. [DOI: 10.1016/s1297-9562(07)78724-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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195
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Zhu L, Xu X, Luo W, Cao D, Yang Y. Formation and microbial community analysis of chloroanilines-degrading aerobic granules in the sequencing airlift bioreactor. J Appl Microbiol 2007; 104:152-60. [PMID: 17887986 DOI: 10.1111/j.1365-2672.2007.03548.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS This paper investigates a selection-based acclimation strategy for improving the performance and stability of aerobic granules at a high chloroanilines loading. METHODS AND RESULTS The experiments were conducted in a sequencing airlift bioreactor (SABR) to develop aerobic granules fed with chloroanilines (ClA). The evolution of aerobic granulation was monitored using image analysis and scanning electron microscopy, and PCR-DGGE analysis of microbial community was performed. The sludge granulation was apparently developed by decreased settling time and gradual increased ClA loading to 0.8 kg m(-3) day(-1). A steady-state performance of the granular SABR was reached at last, as evidenced by biomass concentration of 6.3 g l(-1) and constant ClA removal efficiency of 99.9%. The mature granules had a mean size of 1.55 mm, minimal settling velocity of 68.4 m h(-1), specific ClA degradation rate of 0.181 g gVSS(-1) day(-1). Phylogenetic analysis of aerobic ClA-degrading granules confirmed the dominance of beta-, gamma-Proteobacteria and Flavobacteria. CONCLUSIONS The chosen operating strategy involving step increase in ClA loading and enhancement of major selection pressures was successful in cultivating the aerobic ClA-degrading granules. SIGNIFICANCE AND IMPACT OF THE STUDY This research could be helpful for improving the stability of aerobic granules via optimizing operating conditions and developing economic feasible full-scale granular bioreactor.
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Lee KM, Cao D, Itami A, Pour PM, Hruban RH, Maitra A, Ouellette MM. Class III beta-tubulin, a marker of resistance to paclitaxel, is overexpressed in pancreatic ductal adenocarcinoma and intraepithelial neoplasia. Histopathology 2007; 51:539-46. [PMID: 17714470 DOI: 10.1111/j.1365-2559.2007.02792.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
AIMS Class III beta-tubulin (TUBB3) reduces microtubule stability and confers resistance to microtubule-stabilizing taxanes, including paclitaxel and docetaxel. Pancreatic ductal adenocarcinomas show limited responsiveness to taxanes, but little is known of the underlying mechanisms. The aim of this study was to examine TUBB3 expression in pancreatic cancer cell lines, invasive pancreatic adenocarcinoma and pancreatic intraepithelial neoplasia (PanIN). METHODS AND RESULTS Reverse transcriptase-polymerase chain reaction and Western blot were used to study TUBB3 expression in pancreatic cancer cell lines. Immunohistochemistry was employed to assess TUBB3 in pancreatic cancer specimens, including 75 invasive adenocarcinomas and 41 PanIN precursor lesions. TUBB3 was undetectable in non-neoplastic ducts of the pancreas. In contrast, the vast majority (78-93%) of pancreatic ductal adenocarcinomas demonstrated either diffuse or focal TUBB3 expression. TUBB3 was found to increase progressively in PanIN lesions from 3/16 of PanIN-1 (19%), 5/17 of PanIN-2 (29%) to 5/8 of PanIN-3 lesions (63%). CONCLUSIONS TUBB3 is expressed in most pancreatic ductal adenocarcinomas, possibly accounting for the suboptimal response of these tumours to microtubule-stabilizing agents. Up-regulation of TUBB3 in PanIN lesions suggests that microtubule dysfunction is an early feature of this disease. TUBB3 immunohistochemistry could potentially help identify pancreatic cancer patients lacking TUBB3 expression who might benefit from taxane therapy.
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Luan S, Wang C, Cao D, Chen D, Shepard D, Yu C. TH-C-AUD-01: IMAT Leaf Sequencing Using Graph Algorithms. Med Phys 2007. [DOI: 10.1118/1.2761660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ye J, Wong T, Cao D, Shepard D, Mehta V. SU-FF-J-06: Use of Daily KV Cone-Beam CT Data to Analyze the Effectiveness of a Weekly Correction Strategy for Lung Cancer Radiotherapy. Med Phys 2007. [DOI: 10.1118/1.2760511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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199
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Cao D, Shepard D. TH-C-AUD-04: Efficiency of a Multi-Layer MLC in Step-&-Shoot IMRT Delivery. Med Phys 2007. [DOI: 10.1118/1.2761663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Wong T, Ye J, Cao D, Shepard D, Mehta V. SU-FF-J-09: An Analysis of Cone-Beam CT for Determining Setup Errors and Designing Treatment Margins for Non-Small Cell Lung Cancer Patients. Med Phys 2007. [DOI: 10.1118/1.2760514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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