476
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Shen J, Itti L. Top-down Visual Attention and Gender in a Focused Listening Task. J Vis 2011. [DOI: 10.1167/11.11.636] [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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477
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Jiang H, Wang XB, Li CY, Li JS, Xu FJ, Mao C, Yang WT, Shen J. Improvement of hemocompatibility of polycaprolactone film surfaces with zwitterionic polymer brushes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11575-11581. [PMID: 21851101 DOI: 10.1021/la202101q] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polycaprolactone (PCL) has been widely adopted as a scaffold biomaterial, but further improvement of the hemocompatibility of a PCL film surface is still needed for wide biomedical applications. In this work, the PCL film surface was functionalized with zwitterionic poly(3-dimethyl(methacryloyloxyethyl) ammonium propane sulfonate) (P(DMAPS)) brushes via surface-initiated atom transfer radical polymerization (ATRP) for enhancing hemocompatibility. Kinetics study revealed an approximately linear increase in graft yield of the functional P(DMAPS) brushes with polymerization time. The blood compatibilities of the modified PCL film surfaces were studied by platelet adhesion tests of platelet-rich plasma and human whole blood, hemolysis assay, and plasma recalcification time (PRT) assay. The improvement of hemocompatibility is dependent on the coverage of the grafted P(DMAPS) brushes on the PCL film. Lower or no platelet and blood cell adhesion was observed on the P(DMAPS)-grafted film surfaces. The P(DMAPS) grafting can further decrease hemolysis and enhance the PRT of the PCL surface. With the versatility of surface-initiated ATRP and the excellent hemocompatibility of zwitterionic polymer brushes, PCL films with desirable blood properties can be readily tailored to cater to various biomedical applications.
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478
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Shen J, Wyman CE. Application of a reaction model to improve calculation of the sugar recovery standard for sugar analysis. Biotechnol Bioeng 2011; 109:300-5. [PMID: 21809326 DOI: 10.1002/bit.23277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 07/08/2011] [Accepted: 07/18/2011] [Indexed: 11/11/2022]
Abstract
A kinetic model was applied to improve determination of the sugar recovery standard (SRS) for biomass analysis. Three sets of xylose (0.10-1.00 g/L and 0.999-19.995 g/L) and glucose (0.206-1.602 g/L) concentrations were measured by HPLC following reaction of each for 1 h. Then, parameters in a kinetic model were fit to the resulting sugar concentration data, and the model was applied to predict the initial sugar concentrations and the best SRS value (SRS(p)). The initial sugar concentrations predicted by the model agreed with the actual initial sugar concentrations. Although the SRS(e) calculated directly from experimental data oscillated considerably with sugar concentration, the SRS(p) trend was smooth. Statistical analysis of errors and application of the F-test confirmed that application of the model reduced experimental errors in SRS(e). Reference SRS(e) values are reported for the three series of concentrations.
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479
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Vojvodic A, Calle-Vallejo F, Guo W, Wang S, Toftelund A, Studt F, Martínez JI, Shen J, Man IC, Rossmeisl J, Bligaard T, Nørskov JK, Abild-Pedersen F. On the behavior of Brønsted-Evans-Polanyi relations for transition metal oxides. J Chem Phys 2011; 134:244509. [DOI: 10.1063/1.3602323] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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480
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Carvalho CMB, Bartnik M, Pehlivan D, Fang P, Shen J, Lupski JR. Evidence for disease penetrance relating to CNV size: Pelizaeus-Merzbacher disease and manifesting carriers with a familial 11 Mb duplication at Xq22. Clin Genet 2011; 81:532-41. [PMID: 21623770 DOI: 10.1111/j.1399-0004.2011.01716.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The potential causes for the incomplete penetrance of Pelizaeus-Merzbacher disease (PMD) in female carriers of PLP1 mutations are not well understood. We present a family with a boy having PMD in association with PLP1 duplication and three females who are apparent manifesting carriers. Custom high-resolution oligonucleotide array comparative genomic hybridization (aCGH) and breakpoint junction sequencing were performed and revealed a familial complex duplication consisting of a small duplicated genomic interval (∼56 kb) and a large segmental duplication (∼11 Mb) that resulted in a PLP1 copy number variation gain. Breakpoint junction analysis implicates a replication-based mechanism underlying the rearrangement formation. X-inactivation studies (XCI) showed a random to moderate advantageous skewing pattern in peripheral blood cells but a moderate to extremely skewed (≥90%) pattern in buccal cells. In conclusion, our data show that complex duplications involving PLP1 are not uncommon, can be detected at the level of genome resolution afforded by clinical aCGH and duplication and inversion can be produced in the same event. Furthermore, the observation of three manifesting carriers with a large genomic rearrangement supports the contention that duplication size along with genomic content can be an important factor for penetrance of the PMD phenotype in females.
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481
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Zhu T, Shen J. SU-E-T-362: Small Field Dosimetry for Double Scattering Proton Beams. Med Phys 2011. [DOI: 10.1118/1.3612316] [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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482
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Shen J. SU-E-I-135: Image Reconstruction by Derivatives in Frequency Domain. Med Phys 2011. [DOI: 10.1118/1.3611709] [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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483
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Delgado-Lista J, Perez-Martinez P, Garcia-Rios A, Solivera J, Yubero-Serrano E, Fuentes F, Parnell L, Shen J, Gomez P, Jimenez-Gomez Y, Gomez-Luna M, Marin C, Belisle S, Rodriguez-Cantalejo F, Meydani S, Ordovas J, Perez-Jimenez F, Lopez-Miranda J. 393 TRIGLYCERIDE METABOLISM AND INTERLEUKIN-6 LEVELS ARE ALTERED IN CARRIERS OF THE MINOR ALLELE OF AN INTERLEUKIN-1B GENE VARIATION (-1473G/C). ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70394-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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484
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Shen J, McDonough J, Tochner Z, Both S. SU-E-T-621: A Study to Evaluate the Accuracy of Average CT Based Proton Plan Dose Volume Histograms (DVHs). Med Phys 2011. [DOI: 10.1118/1.3612584] [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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485
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Jayaprakash N, Shen J, Moganty SS, Corona A, Archer LA. Porous Hollow Carbon@Sulfur Composites for High-Power Lithium-Sulfur Batteries. Angew Chem Int Ed Engl 2011; 50:5904-8. [DOI: 10.1002/anie.201100637] [Citation(s) in RCA: 1488] [Impact Index Per Article: 114.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Indexed: 11/06/2022]
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486
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Jayaprakash N, Shen J, Moganty SS, Corona A, Archer LA. Porous Hollow Carbon@Sulfur Composites for High-Power Lithium-Sulfur Batteries. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100637] [Citation(s) in RCA: 450] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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487
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Jiang H, Pan J, Wu Y, Zhang J, Wang Y, Bai S, Shen J, Xue Y, Chen S. 110 Fluorescence in situ hybridization analysis has limited utility in myelodysplastic syndromes (MDS) cases with successful karyotyping. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70112-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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488
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Ward TZ, Gai Z, Xu XY, Guo HW, Yin LF, Shen J. Tuning the metal-insulator transition in manganite films through surface exchange coupling with magnetic nanodots. PHYSICAL REVIEW LETTERS 2011; 106:157207. [PMID: 21568612 DOI: 10.1103/physrevlett.106.157207] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Indexed: 05/30/2023]
Abstract
In strongly correlated electronic systems, the global transport behavior depends sensitively on spin ordering. We show that spin ordering in manganites can be controlled by depositing isolated ferromagnetic nanodots at the surface. The exchange field at the interface is tunable with nanodot density and makes it possible to overcome dimensionality and strain effects in frustrated systems to greatly increasing the metal-insulator transition and magnetoresistance. These findings indicate that electronic phase separation can be controlled by the presence of magnetic nanodots.
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489
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Shen J, Wyman CE. Hydrochloric acid-catalyzed levulinic acid formation from cellulose: data and kinetic model to maximize yields. AIChE J 2011. [DOI: 10.1002/aic.12556] [Citation(s) in RCA: 132] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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490
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Malacarne LC, Astrath NGC, Medina AN, Herculano LS, Baesso ML, Pedreira PRB, Shen J, Wen Q, Michaelian KH, Fairbridge C. Soret effect and photochemical reaction in liquids with laser-induced local heating. OPTICS EXPRESS 2011; 19:4047-58. [PMID: 21369233 DOI: 10.1364/oe.19.004047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We report a theoretical model and experimental results for laser-induced local heating in liquids, and propose a method to detect and quantify the contributions of photochemical and Soret effects in several different situations. The time-dependent thermal and mass diffusion equations in the presence and absence of laser excitation are solved. The two effects can produce similar transients for the laser-on refractive index gradient, but very different laser-off behavior. The Soret effect, also called thermal diffusion, and photochemical reaction contributions in photochemically reacting aqueous Cr(VI)-diphenylcarbazide, Eosin Y, and Eosin Y-doped micellar solutions, are decoupled in this work. The extensive use of lasers in various optical techniques suggests that the results may have significance extending from physical-chemical to biological applications.
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491
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Reese A, Favoreto S, Quraishi J, Biyasheva A, Shen J, Greiman A, Avila P. Higher Rhinovirus-Induced Production of TSLP in Nasal Epithelial Cells from Asthmatic than Healthy Subjects. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.100] [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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492
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493
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Du ZP, Lv Z, Wu BL, Wu ZY, Shen JH, Wu JY, Xu XE, Huang Q, Shen J, Chen HB, Li EM, Xu LY. Neutrophil gelatinase-associated lipocalin and its receptor: independent prognostic factors of oesophageal squamous cell carcinoma. Clin Mol Pathol 2011; 64:69-74. [DOI: 10.1136/jcp.2010.083907] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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494
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Yang L, Chen Z, Zhang D, Liu Y, Han Y, Shen J. Adsorption of dimethylamine from aqueous solution by manganese dioxide. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2011; 63:45-50. [PMID: 21245552 DOI: 10.2166/wst.2011.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Removal of precursors of N-nitrosodimethylamine (NDMA), such as the most direct precursor dimethylamine (DMA), might be an effective method to control NDMA formation during practical water treatment process. Adsorption of DMA onto manganese dioxide (MnO₂) from aqueous solution has been investigated using batch experiments in this study. Results indicate that DMA adsorption is initially rapid (in the first 5 h) and the adsorption process reaches a steady state after 15 h. The adsorption isotherms are well described by the Freundlich models. The desorption shows an irreversibility of DMA adsorption onto MnO₂. The effects of temperature, pH, ionic strength, humic acid, and the presence of other secondary aliphatic amines on adsorption processes are also examined. According to the experimental results, the amount of DMA adsorbed increases with an increase of temperature from 288 to 308 K, and with a decrease of ionic strength from 1 to 10 mM. The maximum adsorption appeared at pH 7.0. However, the amount of DMA adsorbed onto MnO₂ does not show obvious difference in the presence of humic acid. According to the results, it suggests that the adsorption is primarily brought about by electrostatic interaction between DMA and MnO₂ surface.
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495
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Martella G, Madeo G, Schirinzi T, Tassone A, Sciamanna G, Spadoni F, Stefani A, Shen J, Pisani A, Bonsi P. Altered profile and D2-dopamine receptor modulation of high voltage-activated calcium current in striatal medium spiny neurons from animal models of Parkinson's disease. Neuroscience 2010; 177:240-51. [PMID: 21195752 DOI: 10.1016/j.neuroscience.2010.12.057] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 12/23/2010] [Accepted: 12/28/2010] [Indexed: 11/30/2022]
Abstract
In the present work we analyzed the profile of high voltage-activated (HVA) calcium (Ca2+) currents in freshly isolated striatal medium spiny neurons (MSNs) from rodent models of both idiopathic and familial forms of Parkinson's disease (PD). MSNs were recorded from reserpine-treated and 6-hydroxydopamine (6-OHDA)-lesioned rats, and from DJ-1 and PINK1 (PTEN induced kinase 1) knockout (-/-) mice. Our analysis showed no significant changes in total HVA Ca2+ current. However, we recorded a net increase in the L-type fraction of HVA Ca2+ current in dopamine-depleted rats, and of both N- and P-type components in DJ-1-/- mice, whereas no significant change in Ca2+ current profile was observed in PINK1-/- mice. Dopamine modulates HVA Ca2+ channels in MSNs, thus we also analyzed the effect of D1 and D2 receptor activation. The effect of the D1 receptor agonist SKF 83822 on Ca2+ current was not significantly different among MSNs from control animals or PD models. However, in both dopamine-depleted rats and DJ-1-/- mice the D2 receptor agonist quinpirole inhibited a greater fraction of HVA Ca2+ current than in the respective controls. Conversely, in MSNs from PINK1-/- mice we did not observe alterations in the effect of D2 receptor activation. Additionally, in both reserpine-treated and 6-OHDA-lesioned rats, the effect of quinpirole was occluded by the selective L-type Ca2+ channel blocker nifedipine, while in DJ-1-/- mice it was mostly occluded by ω-conotoxin GVIA, blocker of N-type channels. These results demonstrate that both dopamine depletion and DJ-1 deletion induce a rearrangement in the HVA Ca2+ channel profile, specifically involving those channels that are selectively modulated by D2 receptors.
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496
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Xing HR, Zhang Q, Bindokas V, Shen J, Fan H, Hoffman RM. Abstract P1-02-07: Real-Time Functional Imaging of Tumor Vascular Normalization by Anti-Angiogenic Agents. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p1-02-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: We describe here new technology that enables non-invasive imaging of normalization of tumor blood vessels by anti-angiogenic agents in real time.
Materials and Methods: Variable-magnification in vivo-fluorescence imaging as well as fluorescence tomography were used to visualize vessel normalization.
Results: Morphological changes in the same vessel prior to and after drug treatment were imaged with high resolution in real time. Differences in vascular responses to the mTOR inhibitor rapamycin and to an anti-VEGF antibody were functionally imaged. Tumor vessel normalization was demonstrated by significantly reduced leakiness and subsequent improved tumor delivery of Paclitaxel-BODPY as well as by normalized morphology. The tumor vascular pool agent, AngioSense750, was retained in tumors after both anti-VEGF antibody and rapamycin treatment as visualized by noninvasive fluorescence tomography. The anti-angiogenic therapy normalized vessels, which significantly enhanced the antitumor efficacy of Paclitaxel due to increased drug penetration throughout the tumor. Discussion: The optical imaging technology described here is thus a powerful real-tool imaging tool of functional and morphological tumor vessel normalization and its therapeutic consequences.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P1-02-07.
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497
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Zhang H, Wen K, Shen J, Geng S, Huang J, Pan Z, Jiao X. Characterization of immune responses following intranasal immunization with the Mycobacterium bovis CFP-10 protein expressed by attenuated Salmonella typhimurium. Scand J Immunol 2010; 72:277-83. [PMID: 20883312 DOI: 10.1111/j.1365-3083.2010.02421.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Culture filtrate protein 10 (CFP-10) from Mycobacterium bovis or Mycobacterium tuberculosis (MTB) is an immunodominant T-cell antigen expressed during the early stages of infection. Because lungs are most commonly associated with primary M. bovis infections, specific immunity at this site is desirable for protection. Therefore, in this study, immune responses generated in mouse lung, spleen and Peyer's patches were examined following intranasal (i.n.) immunization with Salmonella typhimurium- expressing CFP-10. Cells harvested from the lungs and Peyer's patches of immunized mice and then stimulated with CFP-10 produced significant levels of IFN-γ and these mice developed elevated serum IgG and lung IgA anti-CFP-10 responses, suggesting that this approach induced potent anti-CFP-10 mucosal immunity. Our study demonstrates that i.n. administration of CFP-10 expressed by S. typhimurium represents an effective way to induce efficient immune response to M. bovis antigen.
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498
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Shen J, Metz J, Zhu T, Panetta J, Welliver M, Plastaras J, BarAd V, Both S. A Study to Quantify Dosimetric Consequences of Pancreatic Tumor Motion on the Robustness of IMRT Plans using a Motion Kernel Convolution Method. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1759] [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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499
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Yaparpalvi R, Garg M, Hannan R, Shen J, Lee C, Landau E, Bodner W, Mah D, Guha C, Kalnicki S. Evidence-based Definition of a “Safe” Dose-volume Curve for Reducing Rectal Toxicity from External Beam Prostate Radiation Therapy. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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500
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Moganty SS, Jayaprakash N, Nugent JL, Shen J, Archer LA. Ionic-Liquid-Tethered Nanoparticles: Hybrid Electrolytes. Angew Chem Int Ed Engl 2010; 49:9158-61. [DOI: 10.1002/anie.201004551] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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