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Zhong H, Glide-Hurst C, Li H, Nurushev T, Movsas B, Chetty I. WE-E-BRB-03: Development of a Deformable Dosimetric Phantom for Verification of 4D Dose Calculation Algorithms. Med Phys 2012; 39:3956. [DOI: 10.1118/1.4736145] [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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227
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Kim J, Zhong H. TH-A-211-02: Effects of Different Parameters on Deformable Image Registration. Med Phys 2012. [DOI: 10.1118/1.4736234] [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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228
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Li HS, Chin K, Nurushev T, Kim J, Zhong H, Ryu S, Ajlouni M, Movsas B, Chetty IJ. TU-C-213CD-09: Dosimetric Impact of the Interplay Effect on RapidArc versus IMRT Delivery of Lung Cancer Treatment Using SBRT. Med Phys 2012. [DOI: 10.1118/1.4735936] [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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229
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Glide-Hurst C, Zhong H, Altman M, Chen D, Chetty I. WE-C-BRB-01: Dosimetric Changes Realized from Extended Bit-Depth and Metal Artifact Reduction in CT. Med Phys 2012. [DOI: 10.1118/1.4736094] [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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230
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Wu D, Wang H, Li Z, Wang L, Zheng F, Jiang J, Gao Y, Zhong H, Huang Y, Suo Z. Cathepsin B may be a potential biomarker in cervical cancer. Histol Histopathol 2012; 27:79-87. [PMID: 22127599 DOI: 10.14670/hh-27.79] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Cathepsin B is a protease which is able to digest extracellular matrix. It is currently unknown whether cathepsin B plays a role in cervical cancer development and progression. With Q-PCR and Western blotting, we observed cathepsin B expression in cervical cancer cell line Hela cells. After the gene was silenced in HeLa cells with SiRNA, we confirmed that cathepsin B expressions at both mRNA and protein levels were significantly reduced. At the same time, cell proliferation, migration and invasion of the HeLa cells were significantly decreased compared to control cells. In addition, a significant regression of tumor growth in nude mice which received the siRNA targeted cathepsin B HeLa cells was observed. We further studied the expression of cathepsin B in a series of 169 clinical samples, including 56 invasive cervical squamous carcinoma, 85 CINs and 28 normal cervical tissues. It was found that cathepsin B expression in invasive carcinomas was significantly higher than that in the CINs and normal tissues (P<0.01). In addition, cathepsin B expression in the invasive carcinomas was positively correlated to tumor invasion depth and lymphatic metastasis. Our results indicate that cathepsin B may be a potential biomarker for further strategical clinical studies in cervical cancer.
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Song YZ, Xu JM, Lv JS, Zhong H, Ye Y, Xie JM. Electrochemical reduction of tartrazine at multi-walled carbon nanotube-modified pyrolytic graphite electrode. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2012. [DOI: 10.1134/s0036024412020306] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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232
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Mørk A, Pehrson A, Brennum LT, Nielsen SM, Zhong H, Lassen AB, Miller S, Westrich L, Boyle NJ, Sánchez C, Fischer CW, Liebenberg N, Wegener G, Bundgaard C, Hogg S, Bang-Andersen B, Stensbøl TB. Pharmacological effects of Lu AA21004: a novel multimodal compound for the treatment of major depressive disorder. J Pharmacol Exp Ther 2011; 340:666-75. [PMID: 22171087 DOI: 10.1124/jpet.111.189068] [Citation(s) in RCA: 206] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
1-[2-(2,4-Dimethylphenyl-sulfanyl)-phenyl]-piperazine (Lu AA21004) is a human (h) serotonin (5-HT)(3A) receptor antagonist (K(i) = 3.7 nM), h5-HT(7) receptor antagonist (K(i) = 19 nM), h5-HT(1B) receptor partial agonist (K(i) = 33 nM), h5-HT(1A) receptor agonist (K(i) = 15 nM), and a human 5-HT transporter (SERT) inhibitor (K(i) = 1.6 nM) (J Med Chem 54:3206-3221, 2011). Here, we confirm that Lu AA21004 is a partial h5-HT(1B) receptor agonist [EC(50) = 460 nM, intrinsic activity = 22%] using a whole-cell cAMP-based assay and demonstrate that Lu AA21004 is a rat (r) 5-HT(7) receptor antagonist (K(i) = 200 nM and IC(50) = 2080 nM). In vivo, Lu AA21004 occupies the r5-HT(1B) receptor and rSERT (ED(50) = 3.2 and 0.4 mg/kg, respectively) after subcutaneous administration and is a 5-HT(3) receptor antagonist in the Bezold-Jarisch reflex assay (ED(50) = 0.11 mg/kg s.c.). In rat microdialysis experiments, Lu AA21004 (2.5-10.0 mg/kg s.c.) increased extracellular 5-HT, dopamine, and noradrenaline in the medial prefrontal cortex and ventral hippocampus. Lu AA21004 (5 mg/kg per day for 3 days; minipump subcutaneously), corresponding to 41% rSERT occupancy, significantly increased extracellular 5-HT in the ventral hippocampus. Furthermore, the 5-HT(3) receptor antagonist, ondansetron, potentiated the increase in extracellular levels of 5-HT induced by citalopram. Lu AA21004 has antidepressant- and anxiolytic-like effects in the rat forced swim (Flinders Sensitive Line) and social interaction and conditioned fear tests (minimal effective doses: 7.8, 2.0, and 3.9 mg/kg). In conclusion, Lu AA21004 mediates its pharmacological effects via two pharmacological modalities: SERT inhibition and 5-HT receptor modulation. In vivo, this results in enhanced release of several neurotransmitters and antidepressant- and anxiolytic-like profiles at doses for which targets in addition to the SERT are occupied. The multimodal activity profile of Lu AA21004 is distinct from that of current antidepressants.
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Xu J, Zhong H, Yang Y. Human parechovirus infection in central nervous system related diseases and sepsis in children in Shanghai, China. BMC Proc 2011. [PMCID: PMC3239780 DOI: 10.1186/1753-6561-5-s6-p47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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234
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Xiao HB, Zhou WY, Chen XF, Mei J, Lv ZW, Ding FB, Li GQ, Zhong H, Bao CR. Interferon-β efficiently inhibited endothelial progenitor cell-induced tumor angiogenesis. Gene Ther 2011; 19:1030-4. [DOI: 10.1038/gt.2011.171] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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235
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Chetty I, Li H, Kumar S, Siddiqui M, Liu D, Wen W, Fraser C, Zhong H, Movsas B, Ajlouni M. Correlation of Dose with Patterns of Failure following SABR-based Treatment of NSCLC. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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236
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Wen N, Glide-Hurst C, Chetty I, Nurushev T, Zhong H, Kim J. SU-E-T-780: Evaluation of Margin-Reduction Using a Framework for Image-Guided Adaptive Radiotherapy (IGART) of Prostate Cancer in the Clinical Setting. Med Phys 2011. [DOI: 10.1118/1.3612744] [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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Li H, Zhong H, Kim J, Nurushev T, Glide-Hurst C, Gulam M, Chetty IJ. SU-E-T-873: Dosimetric Difference Between Direct Dose Mapping and Energy/Mass Transfer Mapping for 4D Dose Accumulation. Med Phys 2011. [DOI: 10.1118/1.3612837] [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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238
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Zhong H, Stanley N, Chetty I. SU-D-BRB-05: A Framework for 4D and Adaptive Planning Workflow Incorporating Monte Carlo-Based Optimization and Dose Calculation. Med Phys 2011. [DOI: 10.1118/1.3611523] [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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239
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Li H, Zhong H, Kim J, Nurushev T, Chetty I. SU-E-T-874: Investigation of the Interplay Effect Between MLC and Lung Tumor Motions Using 4DCT and RPM Profile Data. Med Phys 2011. [DOI: 10.1118/1.3612838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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240
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Zhong H, Li H, Glide-Hurst C, Wen N, Siebers J, Nurushev T, Chetty I. SU-E-T-689: Monte Carlo-Based Optimization for Lung SBRT Treatment Planning. Med Phys 2011. [DOI: 10.1118/1.3612651] [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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241
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Zhong H, Hribar LJ, Daniels JC, Feken MA, Brock C, Trager MD. Aerial ultra-low-volume application of naled: impact on nontarget imperiled butterfly larvae (Cyclargus thomasi bethunebakeri) and efficacy against adult mosquitoes (Aedes taeniorhynchus). ENVIRONMENTAL ENTOMOLOGY 2010; 39:1961-1972. [PMID: 22182563 DOI: 10.1603/en10089] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We assessed the exposure and acute toxicity of naled, applied aerially as an ultra-low-volume spray for mosquito control, on late instar larvae of the Miami blue (Cyclargus thomasi bethunebakeri) (Comstock and Huntington 1943) (Lepidoptera: Lycaenidae), an imperiled South Florida butterfly. We concurrently evaluated the control efficacy against caged adult female salt-marsh mosquitoes (Aedes taeniorhynchus) (Wiedemann 1821) (Diptera: Culicidae). This 3-yr study was conducted in north Key Largo (Monroe County, FL) beginning in 2006. The field trials incorporated 15 sampling stations: nine in the target spray zone, three in the spray drift zone at varying distances from the target zone, and three in the control zone not subjected to naled spray drift. A total of six field spray trials were completed, three at an altitude of 30.5 m (100 feet), and three at 45.7 m (150 feet). For all trials, the ultra-low-volume application of Trumpet EC insecticide (78% naled) at a rate of 54.8 ml/ha (0.75 fl. oz/acre) was effective in killing caged adult mosquitoes in the target zone. Butterfly larvae survival was significantly reduced in the spray zone compared with drift and control zones. Analysis of insecticide residue data revealed that the mortality of the late instar butterfly larvae was a result of exposure to excess residues of naled. Additional research is needed to determine mitigation strategies that can limit exposure of sensitive butterflies to naled while maintaining mosquito control efficacy.
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Zhong H. Photoactivated localization microscopy (PALM): an optical technique for achieving ~10-nm resolution. Cold Spring Harb Protoc 2010; 2010:pdb.top91. [PMID: 21123432 DOI: 10.1101/pdb.top91] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The organization of proteins on the scale of a few tens of nanometers, such as in the postsynaptic density and the synaptic vesicles, is a key determinant of their function. However, spatial features on such a fine scale are beyond the resolving power of conventional, diffraction-limited fluorescence light microscopy. In response, several imaging modalities have recently emerged that can surpass the diffraction limit on optically benign samples in which aberration and light scattering are negligible. Although each of these techniques has its own advantages and limitations, photoactivated localization microscopy (PALM) provides the highest shown resolution in biological samples, is the most efficient in utilizing signal photons, and allows for the assessment of individual molecules. This article discusses the basic principles of PALM microscopy, its implementation, and the potential applications in neuroscience.
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Wen N, Nurushev T, Kim J, Liu D, Zhong H, Ren L, Patel S, Elshaikh M, Movsas B, Chetty I. A Framework for Evaluation of Adaptive vs. Conventional Planning in IGRT of Prostate Cancer. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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245
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Zhong H, Kim J, Glide-Hurst C, Chetty I. SU-GG-J-53: A Novel Dose Reconstruction Method for Four-Dimensional Treatment Planning. Med Phys 2010. [DOI: 10.1118/1.3468277] [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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246
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Kim J, Ren L, Jin J, Zhong H, Chetty IJ. SU-DD-A4-03: Cone Beam Computed Tomography Reconstruction on Graphics Processing Units: Flat3D Texture Techniques. Med Phys 2010. [DOI: 10.1118/1.3468001] [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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247
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Glide-Hurst C, Zhong H, Kim J, Chetty I. SU-GG-J-50: The Role of 4DCT Sorting in Treatment Planning for Image-Guided Radiation Therapy. Med Phys 2010. [DOI: 10.1118/1.3468274] [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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248
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Yan C, Zhong H, Murphy M, Weiss E, Siebers JV. A pseudoinverse deformation vector field generator and its applications. Med Phys 2010; 37:1117-28. [PMID: 20384247 PMCID: PMC2837727 DOI: 10.1118/1.3301594] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE To present, implement, and test a self-consistent pseudoinverse displacement vector field (PIDVF) generator, which preserves the location of information mapped back-and-forth between image sets. METHODS The algorithm is an iterative scheme based on nearest neighbor interpolation and a subsequent iterative search. Performance of the algorithm is benchmarked using a lung 4DCT data set with six CT images from different breathing phases and eight CT images for a single prostrate patient acquired on different days. A diffeomorphic deformable image registration is used to validate our PIDVFs. Additionally, the PIDVF is used to measure the self-consistency of two nondiffeomorphic algorithms which do not use a self-consistency constraint: The ITK Demons algorithm for the lung patient images and an in-house B-Spline algorithm for the prostate patient images. Both Demons and B-Spline have been QAed through contour comparison. Self-consistency is determined by using a DIR to generate a displacement vector field (DVF) between reference image R and study image S (DVF(R-S)). The same DIR is used to generate DVF(S-R). Additionally, our PIDVF generator is used to create PIDVF(S-R). Back-and-forth mapping of a set of points (used as surrogates of contours) using DVF(R-S) and DVF(S-R) is compared to back-and-forth mapping performed with DVF(R-S) and PIDVF(S-R). The Euclidean distances between the original unmapped points and the mapped points are used as a self-consistency measure. RESULTS Test results demonstrate that the consistency error observed in back-and-forth mappings can be reduced two to nine times in point mapping and 1.5 to three times in dose mapping when the PIDVF is used in place of the B-Spline algorithm. These self-consistency improvements are not affected by the exchanging of R and S. It is also demonstrated that differences between DVF(S-R) and PIDVF(S-R) can be used as a criteria to check the quality of the DVF. CONCLUSIONS Use of DVF and its PIDVF will improve the self-consistency of points, contour, and dose mappings in image guided adaptive therapy.
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Zhong H, Harrison MC, Warren WH. Metric vs. Ordinal place structure in active navigation. J Vis 2010. [DOI: 10.1167/7.9.760] [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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250
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Zhong H, Harrison MC, Warren WH. The role of topological boundary relations in active navigation. J Vis 2010. [DOI: 10.1167/6.6.144] [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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