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An N, Bland A, Lazarchick J, Li Z, Kraft A, Arthur J, Kang Y. Using Proteomics Analysis to Identify Novel Proteins in Marrow Niche Microenvironment That Contribute to the Enhanced Donor Cell Engraftment with Plerixafor Treatment. Biol Blood Marrow Transplant 2012. [DOI: 10.1016/j.bbmt.2011.12.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abbott EM, Arthur J, Elsheikha H, Fisher MA, Judson A, McGarry JW, Morgan ER. Removal of tick controls for animals entering the UK. Vet Rec 2011; 169:394. [DOI: 10.1136/vr.d6410] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Price JA, Workneh F, Evett SR, Jones DC, Arthur J, Rush CM. Effects of Wheat streak mosaic virus on Root Development and Water-Use Efficiency of Hard Red Winter Wheat. PLANT DISEASE 2010; 94:766-770. [PMID: 30754301 DOI: 10.1094/pdis-94-6-0766] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Greenhouse and field studies were conducted to determine the effects of Wheat streak mosaic virus (WSMV), a member of the family Potyviridae, on root development and water-use efficiency (WUE) of two hard red winter wheat (Triticum aestivum) cultivars, one susceptible and one resistant to WSMV. In the greenhouse studies, wheat cultivars were grown under three water regimes of 30, 60, and 80% soil saturation capacity. After inoculation with WSMV, plants were grown for approximately 4 weeks and then harvested. Root and shoot weights were measured to determine the effect of the disease on biomass. In all water treatments, root biomass and WUE of inoculated susceptible plants were significantly less (P < 0.05) than those of the noninoculated control plants. However, in the resistant cultivar, significance was only found in the 30 and 60% treatments for root weight and WUE, respectively. Field studies were also conducted under three water regimes based on reference evapotranspiration rates. Significant reductions in forage, grain yield, and crop WUE were observed in the inoculated susceptible plots compared with the noninoculated plots. Both studies demonstrated that wheat streak mosaic reduces WUE, which is a major concern in the Texas Panhandle because of limited availability of water.
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Minnis H, Green J, O'Connor TG, Liew A, Glaser D, Taylor E, Follan M, Young D, Barnes J, Gillberg C, Pelosi A, Arthur J, Burston A, Connolly B, Sadiq FA. An exploratory study of the association between reactive attachment disorder and attachment narratives in early school-age children. J Child Psychol Psychiatry 2009; 50:931-42. [PMID: 19344386 DOI: 10.1111/j.1469-7610.2009.02075.x] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To explore attachment narratives in children diagnosed with reactive attachment disorder (RAD). METHOD We compared attachment narratives, as measured by the Manchester Child Attachment Story Task, in a group of 33 children with a diagnosis of RAD and 37 comparison children. RESULTS The relative risk (RR) for children with RAD having an insecure attachment pattern was 2.4 (1.4-4.2) but 30% were rated as securely attached. Within the RAD group, children with a clear history of maltreatment were more likely to be Insecure-Disorganised than children without a clear history of maltreatment. CONCLUSIONS Reactive attachment disorder is not the same as attachment insecurity, and questions remain about how attachment research informs clinical research on attachment disorders.
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Rivkin SE, Muller C, Iriarte D, Arthur J, Canoy A, Reid H. Phase I/II lapatinib plus carboplatin and paclitaxel in stage III or IV relapsed ovarian cancer patients. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.5556] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Lindenberg AM, Engemann S, Gaffney KJ, Sokolowski-Tinten K, Larsson J, Hillyard PB, Reis DA, Fritz DM, Arthur J, Akre RA, George MJ, Deb A, Bucksbaum PH, Hajdu J, Meyer DA, Nicoul M, Blome C, Tschentscher T, Cavalieri AL, Falcone RW, Lee SH, Pahl R, Rudati J, Fuoss PH, Nelson AJ, Krejcik P, Siddons DP, Lorazo P, Hastings JB. X-ray diffuse scattering measurements of nucleation dynamics at femtosecond resolution. PHYSICAL REVIEW LETTERS 2008; 100:135502. [PMID: 18517965 DOI: 10.1103/physrevlett.100.135502] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Indexed: 05/26/2023]
Abstract
Femtosecond time-resolved small and wide angle x-ray diffuse scattering techniques are applied to investigate the ultrafast nucleation processes that occur during the ablation process in semiconducting materials. Following intense optical excitation, a transient liquid state of high compressibility characterized by large-amplitude density fluctuations is observed and the buildup of these fluctuations is measured in real time. Small-angle scattering measurements reveal snapshots of the spontaneous nucleation of nanoscale voids within a metastable liquid and support theoretical predictions of the ablation process.
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DiMauro LF, Arthur J, Berrah N, Bozek J, Galayda JN, Hastings J. Progress report on the LCLS XFEL at SLAC. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1742-6596/88/1/012058] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Hillyard PB, Gaffney KJ, Lindenberg AM, Engemann S, Akre RA, Arthur J, Blome C, Bucksbaum PH, Cavalieri AL, Deb A, Falcone RW, Fritz DM, Fuoss PH, Hajdu J, Krejcik P, Larsson J, Lee SH, Meyer DA, Nelson AJ, Pahl R, Reis DA, Rudati J, Siddons DP, Sokolowski-Tinten K, von der Linde D, Hastings JB. Carrier-density-dependent lattice stability in InSb. PHYSICAL REVIEW LETTERS 2007; 98:125501. [PMID: 17501133 DOI: 10.1103/physrevlett.98.125501] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2006] [Indexed: 05/15/2023]
Abstract
The ultrafast decay of the x-ray diffraction intensity following laser excitation of an InSb crystal has been utilized to observe carrier dependent changes in the potential energy surface. For the first time, an abrupt carrier dependent onset for potential energy surface softening and the appearance of accelerated atomic disordering for a very high average carrier density have been observed. Inertial dynamics dominate the early stages of crystal disordering for a wide range of carrier densities between the onset of crystal softening and the appearance of accelerated atomic disordering.
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Fritz DM, Reis DA, Adams B, Akre RA, Arthur J, Blome C, Bucksbaum PH, Cavalieri AL, Engemann S, Fahy S, Falcone RW, Fuoss PH, Gaffney KJ, George MJ, Hajdu J, Hertlein MP, Hillyard PB, Horn-von Hoegen M, Kammler M, Kaspar J, Kienberger R, Krejcik P, Lee SH, Lindenberg AM, McFarland B, Meyer D, Montagne T, Murray ED, Nelson AJ, Nicoul M, Pahl R, Rudati J, Schlarb H, Siddons DP, Sokolowski-Tinten K, Tschentscher T, von der Linde D, Hastings JB. Ultrafast bond softening in bismuth: mapping a solid's interatomic potential with X-rays. Science 2007; 315:633-6. [PMID: 17272718 DOI: 10.1126/science.1135009] [Citation(s) in RCA: 133] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Intense femtosecond laser excitation can produce transient states of matter that would otherwise be inaccessible to laboratory investigation. At high excitation densities, the interatomic forces that bind solids and determine many of their properties can be substantially altered. Here, we present the detailed mapping of the carrier density-dependent interatomic potential of bismuth approaching a solid-solid phase transition. Our experiments combine stroboscopic techniques that use a high-brightness linear electron accelerator-based x-ray source with pulse-by-pulse timing reconstruction for femtosecond resolution, allowing quantitative characterization of the interatomic potential energy surface of the highly excited solid.
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Gaffney KJ, Lindenberg AM, Larsson J, Sokolowski-Tinten K, Blome C, Synnergren O, Sheppard J, Caleman C, MacPhee AG, Weinstein D, Lowney DP, Allison T, Matthews T, Falcone RW, Cavalieri AL, Fritz DM, Lee SH, Bucksbaum PH, Reis DA, Rudati J, Macrander AT, Fuoss PH, Kao CC, Siddons DP, Pahl R, Moffat K, Als-Nielsen J, Duesterer S, Ischebeck R, Schlarb H, Schulte-Schrepping H, Schneider J, von der Linde D, Hignette O, Sette F, Chapman HN, Lee RW, Hansen TN, Wark JS, Bergh M, Huldt G, van der Spoel D, Timneanu N, Hajdu J, Akre RA, Bong E, Krejcik P, Arthur J, Brennan S, Luening K, Hastings JB. Observation of structural anisotropy and the onset of liquidlike motion during the nonthermal melting of InSb. PHYSICAL REVIEW LETTERS 2005; 95:125701. [PMID: 16197085 DOI: 10.1103/physrevlett.95.125701] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2005] [Indexed: 05/04/2023]
Abstract
The melting dynamics of laser excited InSb have been studied with femtosecond x-ray diffraction. These measurements observe the delayed onset of diffusive atomic motion, signaling the appearance of liquidlike dynamics. They also demonstrate that the root-mean-squared displacement in the [111] direction increases faster than in the [110] direction after the first 500 fs. This structural anisotropy indicates that the initially generated fluid differs significantly from the equilibrium liquid.
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Lindenberg AM, Larsson J, Sokolowski-Tinten K, Gaffney KJ, Blome C, Synnergren O, Sheppard J, Caleman C, Macphee AG, Weinstein D, Lowney DP, Allison TK, Matthews T, Falcone RW, Cavalieri AL, Fritz DM, Lee SH, Bucksbaum PH, Reis DA, Rudati J, Fuoss PH, Kao CC, Siddons DP, Pahl R, Als-Nielsen J, Duesterer S, Ischebeck R, Schlarb H, Schulte-Schrepping H, Tschentscher T, Schneider J, von der Linde D, Hignette O, Sette F, Chapman HN, Lee RW, Hansen TN, Techert S, Wark JS, Bergh M, Huldt G, van der Spoel D, Timneanu N, Hajdu J, Akre RA, Bong E, Krejcik P, Arthur J, Brennan S, Luening K, Hastings JB. Atomic-Scale Visualization of Inertial Dynamics. Science 2005; 308:392-5. [PMID: 15831753 DOI: 10.1126/science.1107996] [Citation(s) in RCA: 292] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The motion of atoms on interatomic potential energy surfaces is fundamental to the dynamics of liquids and solids. An accelerator-based source of femtosecond x-ray pulses allowed us to follow directly atomic displacements on an optically modified energy landscape, leading eventually to the transition from crystalline solid to disordered liquid. We show that, to first order in time, the dynamics are inertial, and we place constraints on the shape and curvature of the transition-state potential energy surface. Our measurements point toward analogies between this nonequilibrium phase transition and the short-time dynamics intrinsic to equilibrium liquids.
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Cavalieri AL, Fritz DM, Lee SH, Bucksbaum PH, Reis DA, Rudati J, Mills DM, Fuoss PH, Stephenson GB, Kao CC, Siddons DP, Lowney DP, Macphee AG, Weinstein D, Falcone RW, Pahl R, Als-Nielsen J, Blome C, Düsterer S, Ischebeck R, Schlarb H, Schulte-Schrepping H, Tschentscher T, Schneider J, Hignette O, Sette F, Sokolowski-Tinten K, Chapman HN, Lee RW, Hansen TN, Synnergren O, Larsson J, Techert S, Sheppard J, Wark JS, Bergh M, Caleman C, Huldt G, van der Spoel D, Timneanu N, Hajdu J, Akre RA, Bong E, Emma P, Krejcik P, Arthur J, Brennan S, Gaffney KJ, Lindenberg AM, Luening K, Hastings JB. Clocking femtosecond X rays. PHYSICAL REVIEW LETTERS 2005; 94:114801. [PMID: 15903864 DOI: 10.1103/physrevlett.94.114801] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2004] [Indexed: 05/02/2023]
Abstract
Linear-accelerator-based sources will revolutionize ultrafast x-ray science due to their unprecedented brightness and short pulse duration. However, time-resolved studies at the resolution of the x-ray pulse duration are hampered by the inability to precisely synchronize an external laser to the accelerator. At the Sub-Picosecond Pulse Source at the Stanford Linear-Accelerator Center we solved this problem by measuring the arrival time of each high energy electron bunch with electro-optic sampling. This measurement indirectly determined the arrival time of each x-ray pulse relative to an external pump laser pulse with a time resolution of better than 60 fs rms.
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Abstract
INTRODUCTION Operative codes provide a readily retrievable record of operative procedures and interventions and are invaluable in performance of clinical audit and research. In most hospitals, coding is performed by coding clerks who depend on legible complete operative notes for coding. In others, coding is by the operator/surgeon. The aim of this audit was to determine the impact of hand-written and typed operative notes on accuracy of coding as well as deciding if the operator is the better coder. METHODS A total of 200 operations/procedures performed by one surgical firm were randomised, prospectively, into hand-written (HN, 100) and template-based typed (TN, 100) operation notes. Each procedure was coded by the operator/surgeon as well as by the coding clerk. The results were compared for error, incomplete and complete codes. RESULTS Coding clerks were found to be better coders with 97% of TN and 85% of HN coded completely compared to 48% and 62%, respectively, by operators. There were more incomplete codes for HN compared to TN (15% versus 6% for coders and 62% versus 53% for operators). There were no error codes for both groups. CONCLUSIONS These results suggest that the quality of coded information is poorer if operation notes are hand-written rather than typed, with template-based mandatory fields in typed notes possibly acting as an aide-memoir in generating complete, accurate notes. In the absence of formal training for clinicians, coding of procedures should probably be left to coding clerks.
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Cornacchia M, Arthur J, Bane K, Bolton P, Carr R, Decker FJ, Emma P, Galayda J, Hastings J, Hodgson K, Huang Z, Lindau I, Nuhn HD, Paterson JM, Pellegrini C, Reiche S, Schlarb H, Stöhr J, Stupakov G, Walz D, Winick H. Future possibilities of the Linac Coherent Light Source. JOURNAL OF SYNCHROTRON RADIATION 2004; 11:227-238. [PMID: 15103109 DOI: 10.1107/s090904950400370x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2003] [Accepted: 02/16/2004] [Indexed: 05/24/2023]
Abstract
A study of the potential for the development of the Linac Coherent Light Source (LCLS) beyond the specifications of the baseline design is presented. These future developments include delivery of X-ray pulses in the 1 fs regime, extension of the spectral range, increase of the FEL power, exploitation of the spontaneous emission, and a more flexible time structure. As this potential is exploited, the LCLS can maintain its role as a world-leading instrument for many years beyond its commissioning in 2008 and initial operation as the world's first X-ray free-electron laser.
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Hamilton B, Ward W, Black N, Arthur J. 355 DIALYSIS MEMBRANE PROTEIN ADHESION: A PROTEOMIC APPROACH. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Ayiku H, Bland A, D'Engenio L, Arthur J, Raymond J, Turner J. 354 IDENTIFICATION OF SODIUM PROTON EXCHANGER (NHE-1) INTERACTING PROTEINS. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Gowans EJ, Blight K, Arthur J, Higgins GD. Detection of virus nucleic acids by radioactive and nonisotopic in situ hybridization. Methods Mol Biol 2003; 33:243-56. [PMID: 7534581 DOI: 10.1385/0-89603-280-9:243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Gowans EJ, Arthur J, Blight K, Higgins GD. Application of in situ hybridization for the detection of virus nucleic acids. Methods Mol Biol 2003; 33:395-408. [PMID: 7894588 DOI: 10.1385/0-89603-280-9:395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Arthur J. New challenges for X-ray optics. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302093480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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Arthur J. Sub-picosecond X-ray sources at SLAC, and their crystallographic applications. Acta Crystallogr A 2002. [DOI: 10.1107/s0108767302099944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Ahn K, Yeyeodu S, Collette J, Madden V, Arthur J, Li L, Erickson AH. An alternate targeting pathway for procathepsin L in mouse fibroblasts. Traffic 2002; 3:147-59. [PMID: 11929604 DOI: 10.1034/j.1600-0854.2002.030207.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In transformed mouse fibroblasts, a significant proportion of the lysosomal cysteine protease cathepsin L remains in cells as an inactive precursor which associates with membranes by a mannose phosphate-independent interaction. When microsomes prepared from these cells were resolved on sucrose gradients, this procathepsin L was localized in dense vesicles distinct from those enriched for growth hormone, which is secreted constitutively when expressed in fibroblasts. Ultrastructural studies using antibodies directed against the propeptide to avoid detection of the mature enzyme in lysosomes revealed that the proenzyme was concentrated in dense cores within small vesicles and multivesicular endosomes which labeled with antibodies specific for CD63. Consistent with the resemblance of these cores to those of regulated secretory granules, secretion of procathepsin L from fibroblasts was modestly stimulated by phorbol, 12-myristate, 13-acetate. When protein synthesis was blocked with cycloheximide and lysosomal proteolysis inhibited with leupeptin, procathepsin L was found to gradually convert to the active single-chain protease. The data suggest that when synthesis levels are high, a portion of the procathepsin L is packaged in dense cores within multivesicular endosomes localized near the plasma membrane. Gradual activation of this proenzyme achieves targeting of the proenzyme to lysosomes by a mannose phosphate receptor-independent pathway.
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Larochelle S, Mehta A, Kaneko N, Mang PK, Panchula AF, Zhou L, Arthur J, Greven M. Nature of e(g) electron order in La(1-x)Sr(1+x)MnO(4). PHYSICAL REVIEW LETTERS 2001; 87:095502. [PMID: 11531573 DOI: 10.1103/physrevlett.87.095502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2000] [Indexed: 05/23/2023]
Abstract
X-ray scattering measurements of the low-temperature structure of La(1-x)Sr(1+x)MnO(4) ( 0.33< or =x< or =0.67) indicate the existence of three distinct regions: a disordered phase (x<0.4), a charge-ordered phase (x> or =0.5), and a mixed phase (0.4< or =x<0.5). For x>0.5, the modulation vector associated with the charge order is incommensurate with the lattice and depends linearly on the concentration of e(g) electrons. The primary superlattice reflections are strongly suppressed along the modulation direction and the higher harmonics are weak, implying the existence of a largely transverse and nearly sinusoidal structural distortion, consistent with a charge-density wave of the e(g) electrons.
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Abstract
During a one-year period 44 patients were treated with reduced-compression bandaging in the vascular unit at a district general hospital. Twenty patients with venous ulcers were referred from community leg ulcer clinics because they could not tolerate standard compression bandaging (group 1). A further 24 patients had mixed aetiology leg ulcers (group 2), and high-compression bandaging was not attempted because of significant peripheral vascular disease (ankle brachial pressure index < 0.8). Forty-two patients tolerated reduced-compression bandaging without discomfort or skin pressure changes. Healing was achieved in 32 patients (13 in group 1 and 19 in group 2). All non-healed ulcers were considered smaller at the time of final follow-up, and had less exudate. Reduced-compression bandaging has been shown to be effective and well tolerated by patients with venous ulcers who cannot comply with high-compression bandaging. With close supervision, it is safe to use in patients with significant peripheral vascular disease.
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Babic N, Rodger G, Arthur J, Minson AC. A study of primary neuronal infection by mutants of herpes simplex virus type 1 lacking dispensable and non-dispensable glycoproteins. J Gen Virol 1999; 80 ( Pt 9):2403-2409. [PMID: 10501494 DOI: 10.1099/0022-1317-80-9-2403] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Cultures of primary rat dorsal root ganglia neurones were inoculated with various doses of herpes simplex virus mutants deficient in glycoproteins B, D, H, C, G, E, I or J, and the proportion of infected neurones was determined. The behaviour of these mutants on primary neurones was broadly similar to their behaviour on fibroblasts or epithelial cells. Thus, virions lacking the 'nondispensable' glycoproteins B, D or H were incapable of infecting primary neurones, whereas mutants lacking glycoproteins G, E, I or J infected primary neurones with the same efficiency as wild-type virions. Two independently derived mutants lacking gC displayed a marginal phenotype, infecting neurones with a five- to tenfold reduced efficiency relative to wild-type virus and relative to non-neuronal cells in the same cultures. We conclude that the virion glycoprotein requirements for infection of mammalian neurones are similar to those required for infection of fibroblasts and epithelial cells but that glycoprotein C may enhance infection of neurones.
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Toloza EM, Hunt K, Miller AR, McBride W, Lau R, Swisher S, Rhoades K, Arthur J, Choi J, Chen L, Chang P, Chen A, Glaspy J, Economou JS. Transduction of murine and human tumors using recombinant adenovirus vectors. Ann Surg Oncol 1997; 4:70-9. [PMID: 8985520 DOI: 10.1007/bf02316813] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Most cytokine-based cancer gene therapy clinical trials have used labor-intensive, retrovirus-mediated strategies resulting in unpredictable gene expression. Recombinant AdV vectors were evaluated for easier, more reproducible gene transfer into 12 human melanoma, 2 murine fibrosarcomas, and 8 other tumor cell lines. METHODS AdV vectors contained a reporter (Escherichia coli beta-galactosidase or firefly luciferase) or cytokine gene (human interleukin-2 [IL-2] or IL-7). Transduction efficiencies and expression levels were assessed by histochemical staining, flow cytometry, polymerase chain reaction, fluorometry, and enzyme-linked immunosorbent assay. Tumorigenicity was determined by subcutaneous injection of cells into syngeneic mice. RESULTS All cell lines studied were transduced with AdV. Most cell lines exhibited 100% transduction efficiencies (by flow cytometry) at multiplicities of infection (MOI) epsilon 10. Gene expression correlated linearly with MOI, but a cytopathic effect was observed at MOI > 100 with all vectors. Nanogram gene expression levels were routinely achieved. Irradiation (30 Gy) minimally affected expression levels. Tumorigenicity of AdV-IL-2-transduced fibrosarcoma cells in mice was inversely related to IL-2 production. A majority of mice that rejected their tumor challenge were immune to tumor rechallenge. CONCLUSIONS E1-deleted AdV vectors may prove useful in generating tumor vaccines ex vivo with high, transient cytokine expression levels.
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