201
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Liu Z, Li S, Chan P, Miyamoto C, Micaily B. WE-C-BRA-03: Influence of Body Compression on Localization Accuracy of Thoracic Tumors Using Fractionated Stereotactic Body Radiotherapy. Med Phys 2010. [DOI: 10.1118/1.3469365] [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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202
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Li S, Liu Z, Chan P, Micaily B, Miyamoto C. WE-C-204B-01: Target Definition of Lung Tumors Combining Patient Specific Pharmacokinetics and Lung Nodule Motion with SUV Distributions in PET-CT Scans. Med Phys 2010. [DOI: 10.1118/1.3469373] [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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203
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Li S, Liu Z, Chan P, Micaily B, Miyamoto C. SU-GG-T-233: An Integration Calculation Method for Dose Verification of Arc-Based Radiotherapy. Med Phys 2010. [DOI: 10.1118/1.3468624] [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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204
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Handolias DD, Chan P, Phillips W, Fox SB, Pearson R, Sawyer S, Campbell I, Salemi R, McArthur GA. Activation of the PI3K pathway and prognostic information in epithelial ovarian cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.10610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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205
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Wong H, Yau CC, Yao T, Tang V, Chan P, Chiu J, Fan S, Poon R. Efficacy and tolerability of sorafenib in elderly patients with advanced hepatocellular carcinoma. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e14522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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206
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Yau CC, Chan P, Pang R, Chan W, Cheng PN, Poon R. A phase I study of recombinant human arginase I (rhArgI) for patients with advanced hepatocellular carcinoma. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e13503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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207
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Cai Y, Liu S, Sothern RB, Xu S, Chan P. Expression of clock genes Per1 and Bmal1 in total leukocytes in health and Parkinson's disease. Eur J Neurol 2010; 17:550-4. [PMID: 19912323 DOI: 10.1111/j.1468-1331.2009.02848.x] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND There is a growing number of clinical studies that revealed a variety of behavioral and physiological desynchronies in patients with Parkinson's disease (PD). However, these desynchronies have not been defined at the molecular level. METHODS Using real-time RT-PCR assay, we analyzed the expression profiles of two principle clock genes, PER1 and BMAL1, in total leukocytes for 12 h during the evening, overnight and morning in subjects with PD and age/sex-matched healthy controls. RESULTS A difference in the expression pattern of BMAL1 but not PER1 was apparent during the dark span, where the relative abundance of BMAL1 was significantly lower in PD patients versus control subjects at 21:00, 00:00 and 06:00 h. Furthermore, expression levels of BMAL1 in PD patients correlated with their United Parkinson's Disease Rating Scale score at 06:00, 09:00 h, and with Pittsburgh Sleep Quality Index score at 06:00 h. CONCLUSION These results suggest that a peripheral molecular clock, as reflected in the dampened expression of the clock genes BMAL1 in total leukocytes, is altered in PD patients. In addition, the relative BMAL1 levels correlate positively with PD severity, which could provide a molecular basis to help monitor disease progression and response to investigational drugs.
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208
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Sasaki Y, Yotsumoto Y, Chan P, Vasios C, Nanez J, Shimojo S, Watanabe T, Bonmassar G. Brain activity related to consolidation of perceptual learning during sleep. J Vis 2010. [DOI: 10.1167/7.15.103] [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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209
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Chan P, Qin Z, Zheng Z, Zhang L, Fang X, Sun F, Gu Z, Chen S, Ma J, Meng C, Langston J, Tanner C. P2.204 A randomized, double-blind, placebo-controlled, delayed start study to assess safty, tolerability and efflcacy of green tea polyphenols in Parkinson's disease. Parkinsonism Relat Disord 2009. [DOI: 10.1016/s1353-8020(09)70555-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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210
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Ransom P, Chan P, Corselli J, Jacobson J, Patton W. P790 Correlation between infertility and rapid sperm head decondensation after lysis challenge. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62280-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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211
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Jordan S, Chan P, Corselli J, Jacobson J, Patton W. P691 A simple sperm motility assay of secretomes from high-potential human blastocysts in vitro. Int J Gynaecol Obstet 2009. [DOI: 10.1016/s0020-7292(09)62183-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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212
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Yau T, Chan P, Cheung F, Lee A, Yau T, Choo S, Lau J, Wong J, Fan S, Poon R. 47LBA Phase II trial of sorafenib with capecitabine and oxaliplatin (SECOX) in patients with locally advanced or metastatic hepatocellular carcinoma. EJC Suppl 2009. [DOI: 10.1016/s1359-6349(09)72082-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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213
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Liu N, Yue F, Tang WP, Chan P. An objective measurement of locomotion behavior for hemiparkinsonian cynomolgus monkeys. J Neurosci Methods 2009; 183:188-94. [PMID: 19591869 DOI: 10.1016/j.jneumeth.2009.06.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2008] [Revised: 06/21/2009] [Accepted: 06/27/2009] [Indexed: 11/28/2022]
Abstract
Both clinical rating scales and objective locomotion measurement are critical evaluation for primate models of Parkinson's disease. Video image analysis system which has been widely used for objective measurement of locomotion behavior for systemic models has rarely been applied to hemiparkinsonian primate model. In this study, a video image analysis system provided by Vigie Primates software was used to assess the locomotion behavior of MPTP hemi-lesioned parkinsonian cynomolgus monkeys by intracarotid infusion. Regardless the presence of only hemilateral abnormal movement, this video image analysis system was sensitive enough to demonstrate a significant difference between normal and MPTP hemi-lesioned animal on several aspects of motor behavior depicted by this software, including quantity of movement, duration spent in activity and count of burst activity. Specifically, a newly introduced ratio of duration/count for every type of movements was a sensitive parameter to objectively measure the changes of locomotion behavior in MPTP hemi-lesioned parkinsonian primates. As a result, the ratio of duration/count for the middle activity was decreased and the ratio of duration/count for the freezing activity was increased in MPTP hemi-lesioned animals, which correlated well with clinical rating scores. Our results support that video image analysis system would be a sensitive objective measurement of locomotion behavior for hemi-lesioned parkinsonian monkeys.
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214
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Yotsumoto Y, Sasaki Y, Chan P, Vasios CE, Bonmassar G, Ito N, Náñez JE, Shimojo S, Watanabe T. Location-specific cortical activation changes during sleep after training for perceptual learning. Curr Biol 2009; 19:1278-82. [PMID: 19576772 DOI: 10.1016/j.cub.2009.06.011] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2009] [Revised: 05/30/2009] [Accepted: 06/01/2009] [Indexed: 11/16/2022]
Abstract
Visual perceptual learning is defined as performance enhancement on a sensory task and is distinguished from other types of learning and memory in that it is highly specific for location of the trained stimulus. The location specificity has been shown to be paralleled by enhancement in functional magnetic resonance imaging (fMRI) signal in the trained region of V1 after visual training. Although recently the role of sleep in strengthening visual perceptual learning has attracted much attention, its underlying neural mechanism has yet to be clarified. Here, for the first time, fMRI measurement of human V1 activation was conducted concurrently with a polysomnogram during sleep with and without preceding training for visual perceptual learning. As a result of predetermined region-of-interest analysis of V1, activation enhancement during non-rapid-eye-movement sleep after training was observed specifically in the trained region of V1. Furthermore, improvement of task performance measured subsequently to the post-training sleep session was significantly correlated with the amount of the trained-region-specific fMRI activation in V1 during sleep. These results suggest that as far as V1 is concerned, only the trained region is involved in improving task performance after sleep.
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215
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Liu Z, Chan P, Chau E, Miyamoto C, Micaily B, Li S. SU-EE-A4-06: Impact of KVp and Bowtie Compensator On Cone-Beam CT Image Quality: An Elekta Synergy XVI Experience. Med Phys 2009. [DOI: 10.1118/1.3181116] [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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216
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Li S, Micaily B, Chan P, Liu Z, Kuritzky N, Miyamoto C. SU-FF-T-206: Clinical Investigation of the Effects of Implant Geometry On 3D-Image-Based Intracavitary Brachytherapy of Carcinoma of the Cervix. Med Phys 2009. [DOI: 10.1118/1.3181681] [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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217
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Li S, Liu Z, Chan P, Micaily B, Miyamoto C. MO-FF-A3-04: Reliable and Accurate Definition of GTV and ITV Using PET/CT in Radiotherapy Planning for Non Small Cell Lung Cancer (NSCLC). Med Phys 2009. [DOI: 10.1118/1.3182292] [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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218
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Shen C, Scheible OK, Chan P, Mofidi A, Yun TI, Lee CC, Blatchley ER. Validation of medium-pressure UV disinfection reactors by Lagrangian actinometry using dyed microspheres. WATER RESEARCH 2009; 43:1370-1380. [PMID: 19138781 DOI: 10.1016/j.watres.2008.12.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2008] [Revised: 11/05/2008] [Accepted: 12/09/2008] [Indexed: 05/27/2023]
Abstract
Lagrangian actinometry (LA) has been demonstrated to represent an alternative to conventional biodosimetry for validation of ultraviolet (UV) disinfection systems used in drinking water treatment. However, previous applications of LA for this purpose have all involved monochromatic (lambda = 254 nm) UV reactor systems. To address this issue, dyed microspheres (DMS) were applied for quantification of dose distribution delivery by field-scale UV reactor systems based on medium-pressure Hg lamp (MP) technology. These MP reactor systems are characterized by polychromatic output. Dose distribution estimates developed by LA for these reactors were reported as equivalent 254 nm distributions. When combined with the UV(254) dose-response behavior for challenge organisms used in simultaneous or parallel biodosimetry experiments, the dose distribution estimates developed from the microspheres yielded estimates of challenge organism inactivation that were in agreement with measured values. For one of the reactors tested, biodosimetry tests were conducted with two challenge organisms that had different UV dose-response behavior; UV dose distribution estimates from LA yielded predictions of microbial inactivation that were in agreement with measured inactivation responses for both challenge organisms for all test conditions. It is likely that the agreement between LA results and biodosimetry data was related, in part, to the agreement between the action spectra of the microspheres and the challenge organisms. Because LA yields a measure of the UV dose distribution delivered by a reactor, the information from LA assays will eliminate many sources of uncertainty in the design and operation of UV systems, thereby allowing for implementation of UV reactor systems that are less expensive than their predecessors, yet more reliable.
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Vivacqua G, Yin JJ, Casini A, Li X, Li YH, D'Este L, Chan P, Renda TG, Yu S. Immunolocalization of alpha-synuclein in the rat spinal cord by two novel monoclonal antibodies. Neuroscience 2008; 158:1478-87. [PMID: 19118601 DOI: 10.1016/j.neuroscience.2008.12.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2008] [Revised: 11/26/2008] [Accepted: 12/01/2008] [Indexed: 01/22/2023]
Abstract
This study provides the first immunohistochemical evidence of the presence and distribution patterns in the rat spinal cord of alpha-synuclein (alpha-Syn), a soluble acidic protein, widely expressed in the CNS and closely associated to the pathogenesis of neurodegenerative conditions such as Parkinson's and Alzheimer's diseases. We used two novel homemade monoclonal antibodies (2E3 and 3D5) recognizing two different epitopes of alpha-Syn. Both antibodies localized alpha-Syn within the nerve terminals, whereas 3D5 alone also localized it within the neuronal nuclei. alpha-Syn-immunoreactive nervous elements were widely recognized throughout rat spinal cord and in almost all the gray matter laminae. However, they appeared particularly concentrated within laminae I, II, VII and X and more scattered in the others. Double immunofluorescent labeling showed that alpha-Syn colocalized with synaptophysin in the presynaptic nerve terminals, with neuropeptide Y (NPY) in lamina I, II, IX and X, and had close relationships with tyrosine hydroxylase (TH) immunoreactive neurons in laminae VII and X. Interestingly, the alpha-Syn-immunoreactive nerve elements, in lamina X, contained little of calbindin-28KD and calretinin-31KD. Our findings could help in understanding the genesis of some early clinical symptoms of Parkinson's disease (PD), such as pain and dysautonomic disorders, and indicate the spinal cord as their probable starting point, according to the ascending theory of PD, proposed by Braak.
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220
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Pakzad L, Ein-Mozaffari F, Chan P. Measuring Mixing Time in the Agitation of Non-Newtonian Fluids through Electrical Resistance Tomography. Chem Eng Technol 2008. [DOI: 10.1002/ceat.200800362] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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221
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Choksy S, Pockley A, El-wajeh Y, Chan P. Erratum to “VEGF and VEGF Receptor Expression in Human Chronic Critical Limb Ischaemia” [Eur J Vasc Endovasc Surg 28, (2004) 660–669]. Eur J Vasc Endovasc Surg 2008. [DOI: 10.1016/j.ejvs.2008.09.002] [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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222
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Hwang YY, Chan P, Law IC, Khin AT, Yau T. Massive rectal bleeding in a patient with a history of hepatocellular carcinoma. Gut 2008; 57:1412, 1419. [PMID: 18791120 DOI: 10.1136/gut.2008.152520] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
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223
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Chan P, Kuritzky N, Zhang S, Tsai J, Li S. SU-GG-T-67: Pulsed Low Dose-Rate Intensity Modulated Radiation Therapy. Med Phys 2008. [DOI: 10.1118/1.2961818] [Citation(s) in RCA: 2] [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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224
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Chan AOO, Chow WS, Lam KF, Hsu A, Hung I, Chan P, But D, Seto WK, Lam KSL. The effect of intragastric balloon placement on weight loss and type 2 diabetes control. Aliment Pharmacol Ther 2008; 28:162-4; author reply 164-5. [PMID: 18532946 DOI: 10.1111/j.1365-2036.2008.03687.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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225
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Tsai J, Li S, Kuritzky N, Micaily B, Chan P, Miyamoto C. TU-D-AUD B-06: Quality Assurance (QA) and IGRT of Elekta XVI Cone Beam System for Clinical IMRT. Med Phys 2008. [DOI: 10.1118/1.2962578] [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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