376
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Pavel D, Jobe T, Devore-Best S, Davis G, Epstein P, Sinha S, Kohn R, Craita I, Liu P, Chang Y. Viewing the functional consequences of traumatic brain injury by using brain SPECT. Brain Cogn 2006; 60:211-3. [PMID: 16646126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
High-resolution brain SPECT is increasingly benefiting from improved image processing software and multiple complementary display capabilities. This enables detailed functional mapping of the disturbances in relative perfusion occurring after TBI. The patient population consisted of 26 cases (ages 8-61 years)between 3 months and 6 years after traumatic brain injury.A very strong case can be made for the routine use of Brain SPECT in TBI. Indeed it can provide a detailed evaluation of multiple functional consequences after TBI and is thus capable of supplementing the clinical evaluation and tailoring the therapeutic strategies needed. In so doing it also provides significant additional information beyond that available from MRI/CT. The critical factor for Brain SPECT's clinical relevance is a carefully designed technical protocol, including displays which should enable a comprehensive description of the patterns found, in a user friendly mode.
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377
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Meyer M, Sokal S, Chang Y, Berger D. Incoming—a PACU, admitting and floor communication web tracker. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.499] [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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378
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Chang Y, Senechal S, de Nadai P, Chenivesse C, Gilet J, Vorng H, Tonnel A, Wallaert B, Tsicopoulos A. Diesel Exposure Favors Th2 Cell Recruitment by Mononuclear Cells from Nonatopic Subjects by Differentially Regulating CCL18/PARC and CXCL10/IP-10 Production. J Allergy Clin Immunol 2006. [DOI: 10.1016/j.jaci.2005.12.1001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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379
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Chang YW, Truong TK, Chang Y. Direct mapping architecture for JPEG Huffman decoder. ACTA ACUST UNITED AC 2006. [DOI: 10.1049/ip-com:20050067] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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380
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Chang Y, Saito S, Uchikawa K, Nakajima M. Focal colors forms axes. J Vis 2005. [DOI: 10.1167/5.12.53] [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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381
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Chang Y. 308. J Minim Invasive Gynecol 2005. [DOI: 10.1016/j.jmig.2005.07.323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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382
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Nagurney J, Resnick J, Gatha N, Binder W, Filbin M, Borczuk P, Brown D, Swap C, Parry B, Chang Y. Emergency Physicians and the Neurologic Examination. Ann Emerg Med 2005. [DOI: 10.1016/j.annemergmed.2005.06.325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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383
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Chang Y, Yap S, Ge X, Piganelli J, Bertera S, Giannokakis N, Mathews C, Prud'homme G, Trucco M. DNA vaccination with an insulin construct and a chimeric protein binding to both CTLA4 and CD40 ameliorates type 1 diabetes in NOD mice. Gene Ther 2005; 12:1679-85. [PMID: 16107864 DOI: 10.1038/sj.gt.3302578] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Type 1 diabetes (T1D), a T-cell-mediated autoimmune disease, could be attributed to many defects in nonobese diabetic (NOD) mice, including deficient expressions of costimulatory molecules that impair antigen presentation. Thus, this deficient antigen presentation may result in a reduced ability to induce a tolerogenic response through negative selection/regulation of autoreactive T cells. Improperly activated T cells seem to be able to induce autoimmune responses causing diabetes. To re-establish tolerance to autoantigens by modulating costimulation, we constructed and tested a new type of DNA vaccine encoding a membrane-bound preproinsulin (mbPPI) and a chimeric gene vector encoding mutant B7.1/CD40L (mB7.1/CD40L) fusion protein. This mutant B7.1 binds CTLA4 but not CD28. We report that young NOD mice immunized with mbPPI along with mB7.1/CD40L DNA vectors significantly reduced diabetes incidence while treatment with CTLA4/IgG1 exacerbated diabetes. In conclusion, the combination of mbPPI and mB7.1/CD40L was able to protect against autoimmunity and diabetes in NOD mice possibly by promoting a more efficient presentation of autoantigen PPI and inducing specific tolerance to PPI by negatively regulating autoreactive T cells.
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384
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Kim Y, Choi I, Choi B, Chang Y, Ryu M, Chung S, Yoon S, Kim J. P-729 Cyberknife frameless radiosurgery for primary or metastatic lung cancer: Early preliminary report. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)81222-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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385
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Wu C, Chang Y, Lee Y. P-683 Estrogen receptors alpha and beta expression in pulmonarysclerosing hemangiomas. Lung Cancer 2005. [DOI: 10.1016/s0169-5002(05)81176-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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386
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Abstract
A novel HLA-B allele, B*3549, was identified in a bone marrow transplantation candidate. B*3549 differs from B*3525 by two nucleotides at exon 2, position 142 (T to G) and 165 (G to C). The difference at position 142 resulted in an amino acid difference (serine to alanine). However, the difference at position 165 did not cause any amino acid change. This novel allele was found on a haplotype with A*3101, B*3549, Cw*0401, DRB1*0407, and DQB1*0302.
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387
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Shanmukh S, Biswas N, Waring AJ, Walther FJ, Wang Z, Chang Y, Notter RH, Dluhy RA. Structure and properties of phospholipid-peptide monolayers containing monomeric SP-B(1-25) II. Peptide conformation by infrared spectroscopy. Biophys Chem 2005; 113:233-44. [PMID: 15620508 DOI: 10.1016/j.bpc.2004.09.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2004] [Revised: 09/15/2004] [Accepted: 09/15/2004] [Indexed: 11/20/2022]
Abstract
The conformation and orientation of synthetic monomeric human sequence SP-B(1-25) (mSP-B(1-25)) was studied in films with phospholipids at the air-water (A/W) interface by polarization modulation infrared reflectance absorption spectroscopy (PM-IRRAS). Modified two-dimensional infrared (2D IR) correlation analysis was applied to PM-IRRAS spectra to define changes in the secondary structure and rates of reorientation of mSP-B(1-25) in the monolayer during compression. PM-IRRAS spectra and 2D IR correlation analysis showed that, in pure films, mSP-B(1-25) had a major alpha-helical conformation plus regions of beta-sheet structure. These alpha-helical regions reoriented later during film compression than beta structural regions, and became oriented normal to the A/W interface as surface pressure increased. In mixed films with 4:1 mol:mol acyl chain perdeuterated 1,2-dipalmitoyl-sn-glycero-3-phosphocholine/1,2-dioleoyl-sn-glycero-3-[phospho-rac-(1-glycerol)] (sodium salt) (DPPC-d(62):DOPG), the IR spectra of mSP-B(1-25) showed that a significant, concentration-dependent conformational change occurred when mSP-B(1-25) was incorporated into a DPPC-d(62):DOPG monolayer. At an mSP-B(1-25) concentration of 10 wt.%, the peptide assumed a predominantly beta-sheet conformation with no contribution from alpha-helical structures. At lower, more physiological peptide concentrations, 2D IR correlation analysis showed that the propensity of mSP-B(1-25) to form alpha-helical structures was increased. In phospholipid films containing 5 wt.% mSP-B(1-25), a substantial alpha-helical peptide structural component was observed, but regions of alpha and beta structure reoriented together rather than independently during compression. In films containing 1 wt.% mSP-B(1-25), peptide conformation was predominantly alpha-helical and the helical regions reoriented later during compression than the remaining beta structural components. The increased alpha-helical structure of mSP-B(1-25) demonstrated here by PM-IRRAS and 2D IR correlation analysis in monolayers of 4:1 DPPC:DOPG containing 1 wt.% (and, to a lesser extent, 5 wt.%) peptide may be relevant for the formation of the intermediate order 'dendritic' surface phase observed in similar surface films by epi-fluorescence.
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388
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Biswas N, Shanmukh S, Waring AJ, Walther F, Wang Z, Chang Y, Notter RH, Dluhy RA. Structure and properties of phospholipid–peptide monolayers containing monomeric SP-B1–25. Biophys Chem 2005; 113:223-32. [PMID: 15620507 DOI: 10.1016/j.bpc.2004.09.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2004] [Revised: 09/15/2004] [Accepted: 09/15/2004] [Indexed: 11/26/2022]
Abstract
Epifluorescence microscopy was used to study the structure and phase behavior of phospholipid films containing a human-sequence monomeric SP-B(1-25) synthetic peptide (mSP-B(1-25)). Measurements were done directly at the air-water (A/W) interface on films in a Langmuir-Whilhelmy balance coupled to a fluorescence microscope and real-time detection system to yield an approximate optical resolution of 1 mum. Fluorescence was achieved by laser excitation of 2-(4,4-difluoro-5,7-dimethyl-4-bora-3a,4a-diaza-s-indacene-3-dodecanoyl)-1-hexadecanoyl-sn-glycero-3-PC (BODIPY-PC, concentration </=1 mol%). The presence of mSP-B(1-25) in films of 4:1 (mol/mol) 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC)/1,2-dioleoyl-sn-glycero-3-[phospho-rac-(1-glycerol)] (sodium salt) (DOPG) had a substantial effect on lipid morphology and phase behavior that depended on both surface pressure and peptide concentration (10, 5, and 1 wt.%). The mSP-B(1-25) peptide tended to fluidize phospholipid monolayers based on expanded molecular areas and reduced collapse pressures. In addition, epifluorescence measurements revealed the formation of solid-phase domains apparent as three-armed counterclockwise spirals separated from regions of fluid liquid-expanded phase domains in compressed phospholipid-peptide films. The appearance of these separated solid-phase domains resembled pure L-DPPC rather than the ensemble-type solid domains found in films of DPPC/DOPG alone and were most apparent when 10 wt.% mSP-B(1-25) was present. In contrast, films containing lower, more physiological mSP-B(1-25) contents of 5 and 1 wt.% exhibited a prominent intermediate 'dendritic' phase that increased in extent as surface pressure was raised. This phase was characterized by branching structures that formed a lattice-like mesh network with fluorescence intensities between a dye-depleted solid domain and a dye-enriched liquid phase. These results indicate that mSP-B(1-25) at near-physiological levels produces morphological changes in phospholipid monolayers analogous to those observed for native SP-B(1-79).
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389
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Kim S, Park H, Kwon Y, Chung Y, Kim T, Park H, Oh S, Bahn J, Lee J, Oh H, Shin E, Lee J, Chang Y, Kim Y, Cho S, Min K, Kim Y. Association between haplotypes of genetic polymorphisms of IL-13 and GM-CSF and atopy, airway hyperresponsiveness, and atopic asthma. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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390
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Cahill RA, Jones OY, Klemperer M, Steele A, Mueller TO, el-Badri N, Chang Y, Good RA. Replacement of recipient stromal/mesenchymal cells after bone marrow transplantation using bone fragments and cultured osteoblast-like cells. Biol Blood Marrow Transplant 2004; 10:709-17. [PMID: 15389437 DOI: 10.1016/j.bbmt.2004.06.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Abstract We present our experience on treatment of three children with potentially fatal diseases using a unique protocol for non-myeloablative bone marrow transplantation. The protocol was designed to promote engraftment of bone marrow stromal/mesenchymal cells (SC/MSCs) based on the knowledge from preclinical models over the last three decades. Accordingly, our protocol is the first to test the use of bone fragments as an ideal vehicle to transplant such cells residing in the bone core. Because of the paucity of knowledge for optimum transplantation of SC/MSCs in humans, we used a multifaceted approach and implanted bone fragments both intraperitoneally and directly into bone on day 0 of BMT. We also infused cultured donor osteoblast-like cells intravenously post-BMT. We were able to achieve high levels of stroma cell engraftment as defined by molecular analyses of bone biopsy specimens.
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391
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Chang Y, Desai L, Fan T, Santana Z, Day N. Characterization of a novel allele HLA-B*3549. Hum Immunol 2004. [DOI: 10.1016/j.humimm.2004.07.155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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392
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Chang Y, Cortes C, Brink C, Polony B, Vincent P, Xue D, Wilkie D, McNabola A, Carter C, Elting J. 148 BAY 57-9352: an inhibitor of VEGFR-2 and PDGFR receptor tyrosine kinases that demonstrates broad anti-tumor activity as a single agent in preclinical models. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)80156-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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393
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Machen J, Bertera S, Chang Y, Bottino R, Balamurugan AN, Robbins PD, Trucco M, Giannoukakis N. Prolongation of islet allograft survival following ex vivo transduction with adenovirus encoding a soluble type 1 TNF receptor–Ig fusion decoy. Gene Ther 2004; 11:1506-14. [PMID: 15229635 DOI: 10.1038/sj.gt.3302320] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Islet transplantation is a viable long-term therapeutic alternative to daily insulin replacement for type I diabetes. The allogeneic nature of the transplants poses immunological challenges for routine clinical utility. Gene transfer of immunoregulatory molecules and those that improve insulin release kinetics provides rational approaches to facilitate allogeneic islet transplantation as a potential therapy. We have examined the efficacy of a soluble type 1 tumor necrosis factor receptor (TNFR) immunoglobulin-Fc fusion transgene (TNFR-Ig) to protect human islets from cytokine-induced apoptosis in culture, as well as in facilitating allogeneic islet transplants in diabetic mice. Cultured human islets were transduced with an adenoviral vector encoding human TNFR-Ig (Ad-TNFR-Ig). TNFR-Ig protein was secreted by cultured islets, as well as by transduced mouse islet transplants recovered from mouse recipients. Glucose-induced insulin release kinetics were comparable among untransduced, Ad-TNFR-Ig-infected human islets and vector-transduced islets exposed to cytokines. In parallel, Ad-TNFR-Ig-infected islets were protected from cytokine-induced apoptosis activation. Finally, diabetic mice transplanted with allogeneic islets expressing TNFR-Ig returned to and maintained normoglycemia significantly longer than untransduced islet recipients. These data support the potential utility of TNFR-Ig gene transfer to islets as a means of facilitating allogeneic islet transplantation.
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394
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Fu YC, Chi CS, Chiu YT, Hsu SL, Hwang B, Jan SL, Chen PY, Huang FL, Chang Y. Cardiac complications of enterovirus rhombencephalitis. Arch Dis Child 2004; 89:368-73. [PMID: 15033850 PMCID: PMC1719879 DOI: 10.1136/adc.2003.029645] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Epidemics of enterovirus 71 infection have caused the death of many children throughout the world. Rhombencephalitis, brain stem encephalitis, and heart failure were present in all of the fatal cases. However, no evidence of myocarditis was noted in the heart specimens, and the mechanism of heart failure remains unknown. AIMS To characterise the presentation of cardiac complications in children with enterovirus rhombencephalitis and discuss its pathogenesis. METHODS Ninety one consecutive patients with enterovirus rhombencephalitis underwent echocardiography. Of these, 17 patients (nine male, eight female; median age 14 months, range 4-57 months) with left ventricular dysfunction were studied. RESULTS Tachycardia was noted in all patients and systemic hypertension in 12. Muscle-brain fraction of creatine kinase was >5% in 14 patients. Plasma norepinephrine and epinephrine levels were significantly raised in the three patients in whom these were analysed. Electrocardiographic abnormalities were noted in eight patients. Pulmonary oedema was complicated in 15 patients. The initial ejection fraction of the left ventricle was 22-58% (mean 37%, SD 11%). All patients deteriorated to hypotensive shock within 12 hours and 13 died. Heart specimens from seven patients showed no evidence of myocarditis, but significant coagulative myocytolysis, myofibrillar degeneration, and cardiomyocyte apoptosis were observed. CONCLUSIONS Acute heart failure was noted in 19% of patients with enterovirus rhombencephalitis, which had a fatality rate of 77%. It was not caused by myocarditis but possibly by neurogenic cardiac damage.
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395
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Hildebrandt G, Olkiewicz K, Corrion L, Chang Y, Liu C, Ferrara J, Cooke K. Donor T cell-derived TNF alpha regulates pulmonary chemokine expression and the development of idiopathic pneumonia syndrome after allogeneic stem cell transplantation. Biol Blood Marrow Transplant 2004. [DOI: 10.1016/j.bbmt.2003.12.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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396
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Jenkins M, Zhu H, Dai C, Sithisack J, Chang Y, Zhu T. 349 FUNCTIONAL ANALYSIS OF THE HIV-1 ENVELOPE GENE ISOLATED FROM PURIFIED HUMAN T CELLS AND MONOCYTES. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-349] [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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397
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Lay OP, Dubovitsky S, Peters RD, Burger JP, Ahn SW, Steier WH, Fetterman HR, Chang Y. MSTAR: a submicrometer absolute metrology system. OPTICS LETTERS 2003; 28:890-892. [PMID: 12816236 DOI: 10.1364/ol.28.000890] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The Modulation Sideband Technology for Absolute Ranging (MSTAR) sensor permits absolute distance measurement with subnanometer accuracy, an improvement of 4 orders of magnitude over current techniques. The system uses fast phase modulators to resolve the integer cycle ambiguity of standard interferometers. The concept is described and demonstrated over target distances up to 1 m. The design can be extended to kilometer-scale separations.
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398
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Chang Y, von Zitzewitz J, Hayes PM, Chen THH. High frequency plant regeneration from immature embryos of an elite barley cultivar (Hordeum vulgare L. cv. Morex). PLANT CELL REPORTS 2003; 21:733-738. [PMID: 12789516 DOI: 10.1007/s00299-003-0607-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2002] [Revised: 01/30/2003] [Accepted: 02/02/2003] [Indexed: 05/24/2023]
Abstract
An efficient plant regeneration system was developed for Hordeum vulgare L. 'Morex' barley, an important United States malting cultivar. The protocol was based on a series of experiments involving the sizes of immature embryos and the culture media. We found that the embryo size is critical for the establishment of embryogenic callus. Smaller embryos (0.5-1.5 mm) showed a much higher ability to produce embryogenic callus capable of regenerating green plants with fewer albinos than did the larger embryos (1.6-3.0 mm). Either 3 mg/l 2,4-dichlorophenoxyacetic acid or dicamba in modified Murashige and Skoog's (MS) medium was optimum for the induction of embryogenic callus. The embryogenic callus maintained high regeneration during six subcultures in the callus induction medium. Efficient shoot regeneration was obtained on modified MS medium containing 0.5-1.0 mg/l 6-benzylaminopurine (BA). Regenerated shoots were rooted on half-strength MS medium containing 0.2 mg/l IBA. Plants were successfully transferred to soil and grown to maturity in the greenhouse. This efficient plant regeneration system provides a foundation for generating transgenic plants of this important barley cultivar.
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399
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Chang Y, Kim T, Kang H, Kim S, Bahn J, Kim Y, Min K, Cho S, Chang Y. 3′ hexameric deoxyguanosine run (dG6 run) enhances immunogenecity of phosphodiester CpG-ODN without increasing the risk of splenomegaly in murine model of asthma. J Allergy Clin Immunol 2003. [DOI: 10.1016/s0091-6749(03)80233-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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400
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Chang Y, Huang H, Chou M, Lin M. A Comparison of Three Methods For Predicting Lithium Doses in Chinese Psychiatric Patients. Clin Pharmacol Ther 2003. [DOI: 10.1016/s0009-9236(03)90680-1] [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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