2776
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Driewer J, Chen H, Osvet A, Sun B, Ice L, Low D, Li H. WE-E-BRB-11: Radiation Hardness of the Storage Phosphor Europium Doped Potassium Chloride for Radiation Therapy Dosimetry. Med Phys 2011. [DOI: 10.1118/1.3613378] [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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2777
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Jambawalikar S, Friedman M, Gould E, Li H, Button T. SU-E-I-124: Diffusion Tensor Imaging of the Sciatic Nerve at 3T. Med Phys 2011. [DOI: 10.1118/1.3611698] [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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2778
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Jiang L, Li H, Heinzerling J, Boike T, Solberg T, Foster R. SU-E-T-539: Dosimetric Evaluation of PTV Margins and Intrafraction Motion for Prostate SBRT. Med Phys 2011. [DOI: 10.1118/1.3612501] [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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2779
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Liu D, Kumar S, Ajlouni M, Jin J, Glide C, Ryu S, Wen N, Siddiqui M, Li H, Fraser C, Movsas B, Chetty I. SU-E-T-651: Radiobiological Effect of Target Volume in SBRT of Lung Tumor: Comparison of Treatment Planning Algorithms Between Pencil Beam Algorithm and Monte Carlo Method. Med Phys 2011. [DOI: 10.1118/1.3612614] [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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2780
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Yang D, Goddu S, Li H, Klein E, Thorstad W, Parikh P. SU-E-I-16: CBCT with Flexible Imaging Trajectories to Improve Image Quality and Longitudinal Coverage - Concept, Simulation and Digital Phantom Study. Med Phys 2011. [DOI: 10.1118/1.3611589] [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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2781
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Flume P, Borowitz D, Liou T, Li H, Yen K, Ordonez C, Geller D. 61* VX-770 in subjects with cystic fibrosis who are homozygous for the F508del-CFTR mutation. J Cyst Fibros 2011. [DOI: 10.1016/s1569-1993(11)60080-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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2782
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Kelly PJ, Whitehead KA, Li H, Verran J, Arnell RD. The influence of silver content on the tribological and antimicrobial properties of ZrN/Ag nanocomposite coatings. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2011; 11:5383-5387. [PMID: 21770192 DOI: 10.1166/jnn.2011.3790] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
ZrN/Ag nanocomposite coatings with varying silver contents were produced by co-deposition in a dual pulsed magnetron sputtering system. The coatings were characterised using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), scratch adhesion testing, thrust washer wear testing and nanoindentation. The hardness of the ZrN/Ag coatings and the friction coefficient running unlubricated against a steel counterface decreased with increasing silver content, whereas the coating-to-substrate adhesion increased for coatings with higher silver contents, compared to a 'pure' ZrN coating. The antimicrobial properties of the coatings were investigated using two well established microbiological assay techniques: zones of inhibition and a NBT (nitro-blue tetrazolium) redox dye. Zones of inhibition were used to determine the extent of silver ion release from the nanocomposite materials, and a NBT (nitro-blue tetrazolium) redox dye was used to determine the antimicrobial effectiveness of the surfaces following incubation. The microorganisms tested were Pseudomonas aeruginosa (P. aeruginosa), Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Whilst no zones of inhibition were observed for S. aureus, on any of the surfaces, the diameter of the 'kill' zones generally increased with increasing silver content for the other microorganisms. For the NBT assays, after incubation, no P. aeruginosa colony forming units were observed on any surface and the number of viable cells of E. coli and S. aureus decreased with increasing silver content, compared to a 'pure' ZrN surface.
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2783
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Liu C, Shi Y, Li H, Wang Y, Yang K. p,p'-DDE disturbs the homeostasis of thyroid hormones via thyroid hormone receptors, transthyretin, and hepatic enzymes. Horm Metab Res 2011; 43:391-6. [PMID: 21512963 DOI: 10.1055/s-0031-1277135] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
1,1-Dichloro-2,2-bis(p-chlorophenyl)ethylene (p, p'-dichlorodiphenyldichloroethylene, p, p'-DDE), the major metabolite of 2,2-bis(p-chlorophenyl)-1,1,1-trichloroethane (DDT), is a known persistent organic pollutant and endocrine disrupting toxicant. In recent years, it has attracted many attentions on account of its disturbing effects on thyroid and thyroid hormones (THs). However, the mechanisms by which the p, p'-DDE exposure influences THs still remain uncertain. To elucidate the possible mechanisms, 20 male rats are administered with different doses of p, p'-DDE (0, 20, 60, 100 mg/kg body wt) every other day by intraperitoneal injection for 10 days. The results indicate that after the p, p'-DDE exposure, serum total thyroxine (TT4) and free thyroxine (FT4) are significantly reduced and other THs changed only little. Transthyretin (TTR) declines in serum and thyroid hormone receptors (TRα1 and TRβ1) mRNA expressions elevate in hypothalamus. The hepatic enzymes CYP1A1 (EROD), CYP2B1 (PROD), and UDPGTs are significantly upregulated, but CYP1A2 (MROD) does not show significant change. Taken together, the observed effects in the present study show that p, p'-DDE could disturb the homeostasis of THs via TRs increase, TTR decrease, and hepatic enzymes induction.
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2784
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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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2785
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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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2786
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Mohan R, Mirkovic D, Titt U, Song X, Li H, Zhu X, Gillin M. SU-E-T-687: Experimental Assessment of the Accuracy of a Semi-Empirical Model and a Monte Carlo System for Proton Dose Calculations for Highly Inhomogeneous Media. Med Phys 2011. [DOI: 10.1118/1.3612649] [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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2787
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Li H, Thorstad W, Ramirez JG, Moore K, Li HH, Noel C, Low D, Mutic S. SU-E-T-295: Clinical Evaluations of a Novel Metal Artifact Reduction Technique for Helical CT Scans in Radiation Therapy. Med Phys 2011. [DOI: 10.1118/1.3612246] [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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2788
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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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2789
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Filippova EV, Brunzelle JS, Cuff ME, Li H, Joachimiak A, Anderson WF. Crystal structure of the novel PaiB transcriptional regulator from Geobacillus stearothermophilus. Proteins 2011; 79:2578-82. [PMID: 21633969 DOI: 10.1002/prot.23061] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 04/04/2011] [Accepted: 04/07/2011] [Indexed: 11/09/2022]
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2790
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Tsunashima Y, Poenisch F, Li H, Zhu X, Balter P, Umezawa M, Sahoo N, Mohan R, Dong L. TU-G-BRB-05: Dosimetric Characterization of Motion Effect in Delivering Uniform Target Dose Distribution Using Scanning Proton Beams. Med Phys 2011. [DOI: 10.1118/1.3613225] [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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2791
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Sahoo N, Anand A, Martin C, Ciangaru G, Poenisch F, Li H, Gillin M, Zhu X. SU-E-T-144: Study of the Effect of the Optical Density to Dose Conversion Calibration Curves on the Measurement of Transverse Lateral Dose Profiles of Proton Beams Using Kodak XV Films. Med Phys 2011. [DOI: 10.1118/1.3612095] [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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2792
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Casterlow S, Li H, Gilbert E, Dalloul R, McElroy A, Emmerson D, Wong E. An antimicrobial peptide is downregulated in the small intestine of Eimeria maxima-infected chickens. Poult Sci 2011; 90:1212-9. [DOI: 10.3382/ps.2010-01110] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2793
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Ren J, Yang M, Qi G, Zheng J, Jia L, Cheng J, Tian C, Li H, Lin X, Du J. Proinflammatory protein CARD9 is essential for infiltration of monocytic fibroblast precursors and cardiac fibrosis caused by Angiotensin II infusion. Am J Hypertens 2011; 24:701-7. [PMID: 21436792 PMCID: PMC3139445 DOI: 10.1038/ajh.2011.42] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background Angiotensin II (Ang II)–induced cardiac remodeling with the underlying mechanisms involving inflammation and fibrosis has been well documented. Cytosolic adaptor caspase recruitment domain 9 (CARD9) has been implicated in the innate immune response. We aimed to examine the role of CARD9 in inflammation and cardiac fibrosis induced by Ang II. Methods Two-month-old CARD9-deficient (CARD9−/−) and wild-type (WT) male mice were infused with Ang II (1,500 ng/kg/min) or saline for 7 days. Heart sections were stained with hematoxylin and eosin and Masson trichrome and examined by immunohistochemistry; and activity and protein levels were measured in macrophages obtained from mice. Results WT mice with Ang II infusion showed a marked increase in CARD9+ macrophages in the heart, but CARD9−/− mice showed significantly suppressed macrophage infiltration and expression of proinflammatory cytokines, including interleukin-1β (IL-1β) and connective tissue growth factor (CTGF). Importantly, Ang II–induced cardiac fibrosis (extracellular matrix and collagen I deposition) was diminished in CARD9−/− hearts, as was the expression of transforming growth factor-β (TGF-β) and level of myofibroblasts positive for α-smooth muscle actin (α-SMA). Furthermore, Ang II activation of nuclear factor-κB (NF-κB), JNK and p38 mitogen-activated protein kinases (MAPKs) in WT macrophages was reduced in CARD9−/− macrophages. Conclusion CARD9 plays an important role in regulating cardiac inflammation and fibrosis in response to elevated Ang II.
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2794
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Huang Y, Kim J, Li H, Kim S, Wen N, Nurushev T, Chetty I, Jin J. SU-E-T-138: Evaluation of CAFCHROMIC® EBT2 Films as An Absolute and Relative Dosimeters in Small Field Dosimetry. Med Phys 2011. [DOI: 10.1118/1.3612089] [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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2795
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Li H, Clay RT, Mazumdar S. Theory of carrier concentration-dependent electronic behavior in layered cobaltates. PHYSICAL REVIEW LETTERS 2011; 106:216401. [PMID: 21699322 DOI: 10.1103/physrevlett.106.216401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Indexed: 05/31/2023]
Abstract
A natural explanation for the carrier concentration-dependent electronic behavior in the layered cobaltates emerges within correlated-electron Hamiltonians with finite on-site and significant nearest neighbor hole-hole Coulomb repulsions. The nearest neighbor repulsion decreases hole double occupancy below hole density 1/3, but increases the same at higher hole densities. Our conclusion is valid for both single-band and three-band extended Hubbard Hamiltonians, and sheds light on concentration dependent e'(g) hole occupancy within the latter.
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Urbanc B, Betnel M, Cruz L, Li H, Fradinger EA, Monien BH, Bitan G. Structural basis for Aβ1–42 toxicity inhibition by Aβ C-terminal fragments: discrete molecular dynamics study. J Mol Biol 2011; 410:316-28. [PMID: 21621545 DOI: 10.1016/j.jmb.2011.05.021] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 04/12/2011] [Accepted: 05/14/2011] [Indexed: 11/16/2022]
Abstract
Amyloid β-protein (Aβ) is central to the pathology of Alzheimer's disease. Of the two predominant Aβ alloforms, Aβ(1-40) and Aβ(1-42), the latter forms more toxic oligomers. C-terminal fragments (CTFs) of Aβ were recently shown to inhibit Aβ(1-42) toxicity in vitro. Here, we studied Aβ(1-42) assembly in the presence of three effective CTF inhibitors and an ineffective fragment, Aβ(21-30). Using a discrete molecular dynamics approach that recently was shown to capture key differences between Aβ(1-40) and Aβ(1-42) oligomerization, we compared Aβ(1-42) oligomer formation in the absence and presence of CTFs or Aβ(21-30) and identified structural elements of Aβ(1-42) that correlated with Aβ(1-42) toxicity. CTFs co-assembled with Aβ(1-42) into large heterooligomers containing multiple Aβ(1-42) and inhibitor fragments. In contrast, Aβ(21-30) co-assembled with Aβ(1-42) into heterooligomers containing mostly a single Aβ(1-42) and multiple Aβ(21-30) fragments. The CTFs, but not Aβ(21-30), decreased the β-strand propensity of Aβ(1-42) in a concentration-dependent manner. CTFs and Aβ(21-30) had a high binding propensity to the hydrophobic regions of Aβ(1-42), but only CTFs were found to bind the Aβ(1-42) region A2-F4. Consequently, only CTFs but not Aβ(21-30) reduced the solvent accessibility of Aβ(1-42) in region D1-R5. The reduced solvent accessibility of Aβ(1-42) in the presence of CTFs was comparable to the solvent accessibility of Aβ(1-40) oligomers formed in the absence of Aβ fragments. These findings suggest that region D1-R5, which was more exposed to the solvent in Aβ(1-42) than in Aβ(1-40) oligomers, is involved in mediating Aβ(1-42) oligomer neurotoxicity.
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Lai R, Xie L, Wu X, Zhang S, Du Y, Zhao S, Zheng Y, Sun Y, LI H, Chen J, LI Z, Liu L, Tang X, Wang L, Wang Y, Han M, Liu C, Wang J, Li H, Liu S. Gene expression signature comparison for solid tumor chemotherapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.e21045] [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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2798
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Youn P, Li H, Milano MT, Stovall M, Constine LS, Travis LB. Long-term survival among Hodgkin lymphoma (HL) patients with gastrointestinal (GI) cancers: A population-based study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.8037] [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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2799
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Sikic BI, Eckhardt SG, Gallant G, Burris HA, Camidge DR, Colevas AD, Jones SF, Messersmith WA, Wakelee HA, Li H, Kaminker PG, Morris S, Infante JR. Safety, pharmacokinetics (PK), and pharmacodynamics (PD) of HGS1029, an inhibitor of apoptosis protein (IAP) inhibitor, in patients (Pts) with advanced solid tumors: Results of a phase I study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.3008] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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2800
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Niu X, Lu S, Li H, Liu Y, Chen Z, Zhou D, Kan M, Li Z, Yu Y, LV C. TGFβ1 gene polymorphisms with the risk of radiation pneumonitis in non-small cell lung cancer in different ethnic study. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.10606] [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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