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Duan JL, Zhang HM, Wang CC, Li HY, Yang FL. Preparation and characterization of fouling-resistant composite membranes based on layer-by-layer self-assembly technique. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2011; 64:2223-2229. [PMID: 22156126 DOI: 10.2166/wst.2011.134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This paper introduces a versatile approach for surface modification of 621-terylene filtration fabric (FF) self-assembled by a dynamic layer-by-layer technique. The hexadecyl trimethyl ammonium bromide (HTAB) and cross-linked polyvinyl alcohol microspheres (PVA-MS) were alternatively deposited on support membrane under a pressure of 0.01 MPa to modify FF. Morphological changes and hydrophilicity of the modified FF were characterized in detail by scanning electron micrograph and water contact angle measurements. Results revealed that PVA-MS could be adsorbed mainly on the surface of FF and water contact angle decreased with the increase of HTAB/PVA-MS bilayer numbers indicating an enhanced hydrophilicity for the modified FF. Backwash experiments of the modified FF exhibited much higher stability of PVA-MS. Protein adsorption experiments were conducted to evaluate the antifouling property of the modified FF. Results indicated that protein adsorption of the membrane surface could be obviously improved by modification, which exhibited superior antifouling property of the modified FF.
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Lien HC, Wang CC, Hsu JY, Sung FC, Cheng KF, Liang WM, Kuo HW, Lin PH, Chang CS. Classical reflux symptoms, hiatus hernia and overweight independently predict pharyngeal acid exposure in patients with suspected reflux laryngitis. Aliment Pharmacol Ther 2011; 33:89-98. [PMID: 21083591 DOI: 10.1111/j.1365-2036.2010.04502.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Gastro-oesophageal reflux disease (GERD) has been associated with reflux laryngitis. AIMS To investigate the risk factors and the predictors of pharyngeal acid reflux (PAR) in Taiwanese patients with suspected reflux laryngitis. METHODS With referral from ENT physicians, 104 patients with symptoms and signs suggestive of reflux laryngitis completed a validated symptom questionnaire, an upper endoscopy exam and ambulatory 24-h pH tests with three sensors located at the hypopharynx, proximal and distal oesophagus. Patients with one or more episodes of PAR were considered abnormal. RESULTS Pharyngeal acid reflux was identified in 17% (18/104) of patients. In multivariate logistic regression analysis, PAR was independently associated with classical reflux symptoms [adjusted odds ratio (aOR) = 3.5, 95% confidence interval (CI): 1.0-12.8], hiatus hernia (aOR = 6.7, 95% CI: 1.5-30.2) and overweight (aOR = 3.4, 95% CI: 1.0-11.0). In predicting PAR, classical reflux symptoms had a sensitivity of 78% and hiatus hernia had a specificity of 95%. With all three factors, the positive predictive value for PAR was 80%. Classical reflux symptoms included heartburn, chest pain, dyspepsia and acid regurgitation. CONCLUSIONS Classical reflux symptoms, hiatus hernia and overweight are independent risk factors that may predict pharyngeal acid reflux in patients with suspected reflux laryngitis.
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Zhang YM, Wang CC, Hu HH, Yang L. Cloning and expression of three fatty acid desaturase genes from cold-sensitive lima bean (Phaseolus lunatus L.). Biotechnol Lett 2010; 33:395-401. [PMID: 20953666 DOI: 10.1007/s10529-010-0432-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Accepted: 09/28/2010] [Indexed: 10/18/2022]
Abstract
The critical chilling temperature of cold-sensitive lima bean (Phaseolus lunatus L.) seedlings was determined to be approx. 8°C. The full-length cDNAs of PlSAD, PlFAD2, and PlFAD3 encoding three fatty acid desaturases were isolated from lima bean leaves. The PlSAD open reading frame (ORF) had 1,317 bp and a single intron of 601 bp, encoding a polypeptide of 438 amino acids that showing 86% homology with the plastidial stearoyl-acyl carrier protein desaturase in soybean. The PlFAD2 ORF contained 1,059 bp and was uninterrupted, encoding a polypeptide of 352 amino acids having 85% identity with the microsomal omega-6 desaturase GmFAD2-3 in soybean. PlFAD3 ORF had 1,116 bp and seven introns, encoding a polypeptide of 371 amino acids showing 91% homology with the microsomal omega-3 desaturase FAD3 in cowpea. PlSAD and PlFAD2 were expressed highly in leaves but poorly in roots and stems, while PlFAD3 was expressed in three tissues. All three genes were significantly induced in leaves by drought. PlSAD and PlFAD3 in leaves were down-regulated by high temperature and salinity, whereas PlFAD2 was up-regulated by the two stresses. The expression patterns of the three genes in lima bean leaves under suboptimal temperature, 18°C, were different from those under 8°C. The down-regulation of PlSAD transcript at chilling temperature might be an important factor contributing to chilling susceptibility for lima bean plants.
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Chuang KA, Lieu CH, Tsai WJ, Wu MH, Chen YC, Liao JF, Wang CC, Kuo YC. Evaluation of anti-Wnt/β-catenin signaling agents by pGL4-TOP transfected stable cells with a luciferase reporter system. Braz J Med Biol Res 2010; 43:931-41. [PMID: 20835687 DOI: 10.1590/s0100-879x2010007500091] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Accepted: 08/19/2010] [Indexed: 01/05/2023] Open
Abstract
Refractory and relapsed leukemia is a major problem during cancer therapy, which is due to the aberrant activation of Wnt/β-catenin signaling pathway. Activation of this pathway is promoted by wingless (Wnt) proteins and induces co-activator β-catenin binding to lymphoid enhancer factor (LEF)/T-cell factor protein (TCF). To provide a convenient system for the screening of anti-Wnt/β-catenin agents, we designed a bi-functional pGL4-TOP reporter plasmid that contained 3X β-catenin/LEF/TCF binding sites and a selectable marker. After transfection and hygromycin B selection, HEK 293-TOP and Jurkat-TOP stable clones were established. The luciferase activity in the stable clone was enhanced by the recombinant Wnt-3A (rWnt-3A; 100-400 ng/mL) and GSK3β inhibitor (2'Z,3'E)-6-bromoindirubin-3'-oxime (BIO; 5 µM) but was inhibited by aspirin (5 mM). Using this reporter model, we found that norcantharidin (NCTD; 100 µM) reduced 80% of rWnt-3A-induced luciferase activity. Furthermore, 50 µM NCTD inhibited 38% of BIO-induced luciferase activity in Jurkat-TOP stable cells. Employing ³H-thymidine uptake assay and Western blot analysis, we confirmed that NCTD (50 µM) significantly inhibited proliferation of Jurkat cells by 64%, which are the dominant β-catenin signaling cells and decreased β-catenin protein in a concentration-dependent manner. Thus, we established a stable HEK 293-TOP clone and successfully used it to identify the Wnt/β-catenin signaling inhibitor NCTD.
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Tsai SS, Huang JC, Chen ST, Sun JH, Wang CC, Lin SF, Hsu BRS, Lin JD, Huang SY, Huang YY. Characteristics of Klebsiella pneumoniae bacteremia in community-acquired and nosocomial infections in diabetic patients. CHANG GUNG MEDICAL JOURNAL 2010; 33:532-539. [PMID: 20979704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND Although diabetes mellitus is known as a major risk factor for Klebsiella pneumoniae infection, the differences in clinical characteristics between community-acquired and nosocomial K. pneumoniae bacteremia in diabetic patients have been rarely reported. METHODS This retrospective analysis enrolled 193 adult diabetic patients with K. pneumoniae bacteremia hospitalized between January 2005 and December 2006. The chi-squared test, analysis of variance (ANOVA), Student's t test, Fisher exact test, and Cox regression model were used for statistical analysis. RESULTS Of the enrolled patients, 147 had community-acquired infections and 46 had nosocomial infections. Compared with the community group, the nosocomial group had higher rates of in-hospital mortality (41.3% vs. 18.4%, p=0.001), malignancy (50.0% vs. 19.0%, p<0.001), and leukopenia (21.7% vs. 5.4%, p=0.001) but had lower levels of serum C-reactive protein (124.3 mg/L vs. 188.7 mg/L, p=0.018) and HbA1c (8.1% vs. 9.5%, p=0.025). The rate of infection with the extended-spectrum β-lactamase-producing strain (ESBL infection) in the nosocomial group was 11 times higher than that in the community group (45.7% vs. 4.1%, p<0.001). ESBL infection accounted for 53% of mortality in the nosocomial group. Pneumonia was more common in the nosocomial group, while local abscess was more common in the community group. The risk factors for mortality were pneumonia, leukopenia, cirrhosis, and a high serum creatinine ratio (creatinine level at admission/baseline). CONCLUSIONS The nosocomial group had more ESBL infections which might account for the higher mortality. The HbA1c level during the course of infection did not affect the outcome. Pneumonia, leukopenia, cirrhosis, and a high serum creatinine ratio at admission were the risk factors for poor outcome.
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Lee CT, Chang CY, Lee YC, Tai CM, Wang WL, Tseng PH, Hwang JC, Hwang TZ, Wang CC, Lin JT. Narrow-band imaging with magnifying endoscopy for the screening of esophageal cancer in patients with primary head and neck cancers. Endoscopy 2010; 42:613-9. [PMID: 20669074 DOI: 10.1055/s-0030-1255514] [Citation(s) in RCA: 95] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND STUDY AIM Although narrow-band imaging (NBI) in endoscopy can improve detection of early-stage esophageal malignancies in patients with head and neck cancers, false-positive results may be obtained in areas with nonspecific inflammatory changes. This study evaluated the feasibility of primary screening with NBI and magnification for the presence of esophageal malignancies in these cancer patients. PATIENTS AND METHODS Sixty-nine patients with documented head and neck cancers were enrolled from April 2008 to January 2009. All patients underwent a meticulous endoscopic examination of the esophagus using a conventional white-light system followed by re-examination using the NBI system and final confirmation with NBI plus magnification. RESULTS Twenty-one patients (30.4 %) were confirmed to have esophageal neoplasia. Among these 21, 16 (76.2 %) had synchronous lesions, 9 (42.9 %) were asymptomatic, and 10 (47.6 %) had early-stage neoplasia. The incidence of multiple esophageal neoplasia was 57.1 %. NBI was more effective than conventional endoscopy in detecting neoplastic lesions (35 lesions in 21 patients vs. 22 lesions in 18 patients) and was particularly effective in patients with dysplasia (13 lesions in 9 patients vs. 3 lesions in 3 patients). The sensitivity and accuracy of detection were 62.9 % and 64.4 % for conventional endoscopy, 100 % and 86.7 % for NBI alone, and 100 % and 95.6 % for NBI with high magnification, respectively. CONCLUSIONS Compared with current approaches, NBI followed by high magnification significantly increases the accuracy of detection of esophageal neoplasia in patients with head and neck cancers. The result warrants conducting prospective randomized controlled study to confirm its efficacy.
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Marqueti RC, Prestes J, Wang CC, Ramos OHP, Perez SEA, Nakagaki WR, Carvalho HF, Selistre-de-Araujo HS. Biomechanical responses of different rat tendons to nandrolone decanoate and load exercise. Scand J Med Sci Sports 2010; 21:e91-9. [PMID: 20673248 DOI: 10.1111/j.1600-0838.2010.01162.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Androgenic-anabolic steroids (AAS) have been associated with an increased incidence of tendon rupture. The aim of this study was to compare the biomechanical properties of the rat calcaneal tendon (CT), superficial flexor tendon (SFT), and deep flexor tendon (DFT), and to determine the effect of jump training in association with AAS. Animals were separated into four groups: sedentary, trained, AAS-treated sedentary rats (AAS), and AAS-treated and trained animals. Mechanical testing showed that the CT differed from the DFT and SFT, which showed similar mechanical properties. Jump caused the CT to exhibit an extended toe region, an increased resistance to tensional load, and a decreased elastic modulus, characteristics of an elastic tendon capable of storing energy. AAS caused the tendons to be less compliant, and the effects were reinforced by simultaneous training. The DFT was the most affected by training, AAS, and the interaction of both, likely because of its involvement in the toe-off step of jumping, which we suggest is related to the rapid transmission of force as opposed to energy storage. In conclusion, tendons are differently adapted to exercise, but responded equally to AAS, showing reduced flexibility, which is suggested to increase the risk of tendon rupture in AAS consumers.
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Khachatryan V, Sirunyan AM, Tumasyan A, Adam W, Bergauer T, Dragicevic M, Erö J, Fabjan C, Friedl M, Frühwirth R, Ghete VM, Hammer J, Hänsel S, Hoch M, Hörmann N, Hrubec J, Jeitler M, Kasieczka G, Kiesenhofer W, Krammer M, Liko D, Mikulec I, Pernicka M, Rohringer H, Schöfbeck R, Strauss J, Taurok A, Teischinger F, Waltenberger W, Walzel G, Widl E, Wulz CE, Mossolov V, Shumeiko N, Suarez Gonzalez J, Benucci L, Ceard L, De Wolf EA, Hashemi M, Janssen X, Maes T, Mucibello L, Ochesanu S, Roland B, Rougny R, Selvaggi M, Van Haevermaet H, Van Mechelen P, Van Remortel N, Adler V, Beauceron S, Blyweert S, D'Hondt J, Devroede O, Kalogeropoulos A, Maes J, Maes M, Tavernier S, Van Doninck W, Van Mulders P, Villella I, Chabert EC, Charaf O, Clerbaux B, De Lentdecker G, Dero V, Gay APR, Hammad GH, Marage PE, Vander Velde C, Vanlaer P, Wickens J, Costantini S, Grunewald M, Klein B, Marinov A, Ryckbosch D, Thyssen F, Tytgat M, Vanelderen L, Verwilligen P, Walsh S, Zaganidis N, Basegmez S, Bruno G, Caudron J, De Favereau De Jeneret J, Delaere C, Demin P, Favart D, Giammanco A, Grégoire G, Hollar J, Lemaitre V, Militaru O, Ovyn S, Pagano D, Pin A, Piotrzkowski K, Quertenmont L, Schul N, Beliy N, Caebergs T, Daubie E, Alves GA, Pol ME, Souza MHG, Carvalho W, Da Costa EM, De Jesus Damiao D, De Oliveira Martins C, Fonseca De Souza S, Mundim L, Oguri V, Santoro A, Silva Do Amaral SM, Sznajder A, Torres Da Silva De Araujo F, Dias FA, Dias MAF, Fernandez Perez Tomei TR, Gregores EM, Marinho F, Novaes SF, Padula SS, Darmenov N, Dimitrov L, Genchev V, Iaydjiev P, Piperov S, Stoykova S, Sultanov G, Trayanov R, Vankov I, Dyulendarova M, Hadjiiska R, Kozhuharov V, Litov L, Marinova E, Mateev M, Pavlov B, Petkov P, Bian JG, Chen GM, Chen HS, Jiang CH, Liang D, Liang S, Wang J, Wang J, Wang X, Wang Z, Yang M, Zang J, Zhang Z, Ban Y, Guo S, Hu Z, Mao Y, Qian SJ, Teng H, Zhu B, Cabrera A, Carrillo Montoya CA, Gomez Moreno B, Ocampo Rios AA, Osorio Oliveros AF, Sanabria JC, Godinovic N, Lelas D, Lelas K, Plestina R, Polic D, Puljak I, Antunovic Z, Dzelalija M, Brigljevic V, Duric S, Kadija K, Morovic S, Attikis A, Fereos R, Galanti M, Mousa J, Nicolaou C, Papadakis A, Ptochos F, Razis PA, Rykaczewski H, Tsiakkouri D, Zinonos Z, Mahmoud M, Hektor A, Kadastik M, Kannike K, Müntel M, Raidal M, Rebane L, Azzolini V, Eerola P, Czellar S, Härkönen J, Heikkinen A, Karimäki V, Kinnunen R, Klem J, Kortelainen MJ, Lampén T, Lassila-Perini K, Lehti S, Lindén T, Luukka P, Mäenpää T, Tuominen E, Tuominiemi J, Tuovinen E, Ungaro D, Wendland L, Banzuzi K, Korpela A, Tuuva T, Sillou D, Besancon M, Dejardin M, Denegri D, Descamps J, Fabbro B, Faure JL, Ferri F, Ganjour S, Gentit FX, Givernaud A, Gras P, Hamel de Monchenault G, Jarry P, Locci E, Malcles J, Marionneau M, Millischer L, Rander J, Rosowsky A, Rousseau D, Titov M, Verrecchia P, Baffioni S, Bianchini L, Bluj M, Broutin C, Busson P, Charlot C, Dobrzynski L, Elgammal S, Granier de Cassagnac R, Haguenauer M, Kalinowski A, Miné P, Paganini P, Sabes D, Sirois Y, Thiebaux C, Zabi A, Agram JL, Besson A, Bloch D, Bodin D, Brom JM, Cardaci M, Conte E, Drouhin F, Ferro C, Fontaine JC, Gelé D, Goerlach U, Greder S, Juillot P, Karim M, Le Bihan AC, Mikami Y, Speck J, Van Hove P, Fassi F, Mercier D, Baty C, Beaupere N, Bedjidian M, Bondu O, Boudoul G, Boumediene D, Brun H, Chanon N, Chierici R, Contardo D, Depasse P, El Mamouni H, Fay J, Gascon S, Ille B, Kurca T, Le Grand T, Lethuillier M, Mirabito L, Perries S, Sordini V, Tosi S, Tschudi Y, Verdier P, Xiao H, Roinishvili V, Anagnostou G, Edelhoff M, Feld L, Heracleous N, Hindrichs O, Jussen R, Klein K, Merz J, Mohr N, Ostapchuk A, Perieanu A, Raupach F, Sammet J, Schael S, Sprenger D, Weber H, Weber M, Wittmer B, Actis O, Ata M, Bender W, Biallass P, Erdmann M, Frangenheim J, Hebbeker T, Hinzmann A, Hoepfner K, Hof C, Kirsch M, Klimkovich T, Kreuzer P, Lanske D, Magass C, Merschmeyer M, Meyer A, Papacz P, Pieta H, Reithler H, Schmitz SA, Sonnenschein L, Sowa M, Steggemann J, Teyssier D, Zeidler C, Bontenackels M, Davids M, Duda M, Flügge G, Geenen H, Giffels M, Haj Ahmad W, Heydhausen D, Kress T, Kuessel Y, Linn A, Nowack A, Perchalla L, Pooth O, Sauerland P, Stahl A, Thomas M, Tornier D, Zoeller MH, Aldaya Martin M, Behrenhoff W, Behrens U, Bergholz M, Borras K, Campbell A, Castro E, Dammann D, Eckerlin G, Flossdorf A, Flucke G, Geiser A, Hauk J, Jung H, Kasemann M, Katkov I, Kleinwort C, Kluge H, Knutsson A, Kuznetsova E, Lange W, Lohmann W, Mankel R, Marienfeld M, Melzer-Pellmann IA, Meyer AB, Mnich J, Mussgiller A, Olzem J, Parenti A, Raspereza A, Schmidt R, Schoerner-Sadenius T, Sen N, Stein M, Tomaszewska J, Volyanskyy D, Wissing C, Autermann C, Draeger J, Eckstein D, Enderle H, Gebbert U, Kaschube K, Kaussen G, Klanner R, Mura B, Naumann-Emme S, Nowak F, Sander C, Schettler H, Schleper P, Schröder M, Schum T, Schwandt J, Stadie H, Steinbrück G, Thomsen J, Wolf R, Bauer J, Buege V, Cakir A, Chwalek T, Daeuwel D, De Boer W, Dierlamm A, Dirkes G, Feindt M, Gruschke J, Hackstein C, Hartmann F, Heinrich M, Held H, Hoffmann KH, Honc S, Kuhr T, Martschei D, Mueller S, Müller T, Niegel M, Oberst O, Oehler A, Ott J, Peiffer T, Piparo D, Quast G, Rabbertz K, Ratnikov F, Renz M, Sabellek A, Saout C, Scheurer A, Schieferdecker P, Schilling FP, Schott G, Simonis HJ, Stober FM, Troendle D, Wagner-Kuhr J, Zeise M, Zhukov V, Ziebarth EB, Daskalakis G, Geralis T, Kyriakis A, Loukas D, Manolakos I, Markou A, Markou C, Mavrommatis C, Petrakou E, Gouskos L, Katsas P, Panagiotou A, Evangelou I, Kokkas P, Manthos N, Papadopoulos I, Patras V, Triantis FA, Aranyi A, Bencze G, Boldizsar L, Debreczeni G, Hajdu C, Horvath D, Kapusi A, Krajczar K, Laszlo A, Sikler F, Vesztergombi G, Beni N, Molnar J, Palinkas J, Szillasi Z, Veszpremi V, Raics P, Trocsanyi ZL, Ujvari B, Bansal S, Beri SB, Bhatnagar V, Jindal M, Kaur M, Kohli JM, Mehta MZ, Nishu N, Saini LK, Sharma A, Sharma R, Singh AP, Singh JB, Singh SP, Ahuja S, Bhattacharya S, Chauhan S, Choudhary BC, Gupta P, Jain S, Jain S, Kumar A, Ranjan K, Shivpuri RK, Choudhury RK, Dutta D, Kailas S, Kataria SK, Mohanty AK, Pant LM, Shukla P, Suggisetti P, Aziz T, Guchait M, Gurtu A, Maity M, Majumder D, Majumder G, Mazumdar K, Mohanty GB, Saha A, Sudhakar K, Wickramage N, Banerjee S, Dugad S, Mondal NK, Arfaei H, Bakhshiansohi H, Fahim A, Jafari A, Mohammadi Najafabadi M, Paktinat Mehdiabadi S, Safarzadeh B, Zeinali M, Abbrescia M, Barbone L, Colaleo A, Creanza D, De Filippis N, De Palma M, Dimitrov A, Fedele F, Fiore L, Iaselli G, Lusito L, Maggi G, Maggi M, Manna N, Marangelli B, My S, Nuzzo S, Pierro GA, Pompili A, Pugliese G, Romano F, Roselli G, Selvaggi G, Silvestris L, Trentadue R, Tupputi S, Zito G, Abbiendi G, Benvenuti AC, Bonacorsi D, Braibant-Giacomelli S, Capiluppi P, Castro A, Cavallo FR, Codispoti G, Cuffiani M, Fanfani A, Fasanella D, Giacomelli P, Giunta M, Grandi C, Marcellini S, Masetti G, Montanari A, Navarria FL, Odorici F, Perrotta A, Rossi AM, Rovelli T, Siroli G, Travaglini R, Albergo S, Cappello G, Chiorboli M, Costa S, Tricomi A, Tuve C, Barbagli G, Broccolo G, Ciulli V, Civinini C, D'Alessandro R, Focardi E, Frosali S, Gallo E, Genta C, Lenzi P, Meschini M, Paoletti S, Sguazzoni G, Tropiano A, Benussi L, Bianco S, Colafranceschi S, Fabbri F, Piccolo D, Fabbricatore P, Musenich R, Benaglia A, Cerati GB, De Guio F, Di Matteo L, Ghezzi A, Govoni P, Malberti M, Malvezzi S, Martelli A, Massironi A, Menasce D, Miccio V, Moroni L, Negri P, Paganoni M, Pedrini D, Ragazzi S, Redaelli N, Sala S, Salerno R, Tabarelli de Fatis T, Tancini V, Taroni S, Buontempo S, Cimmino A, De Cosa A, De Gruttola M, Fabozzi F, Iorio AOM, Lista L, Noli P, Paolucci P, Azzi P, Bacchetta N, Bellan P, Bisello D, Carlin R, Checchia P, Conti E, De Mattia M, Dorigo T, Dosselli U, Gasparini F, Gasparini U, Giubilato P, Gresele A, Lacaprara S, Lazzizzera I, Margoni M, Mazzucato M, Meneguzzo AT, Nespolo M, Perrozzi L, Pozzobon N, Ronchese P, Simonetto F, Torassa E, Tosi M, Vanini S, Zotto P, Zumerle G, Baesso P, Berzano U, Riccardi C, Torre P, Vitulo P, Viviani C, Biasini M, Bilei GM, Caponeri B, Fanò L, Lariccia P, Lucaroni A, Mantovani G, Menichelli M, Nappi A, Santocchia A, Servoli L, Valdata M, Volpe R, Azzurri P, Bagliesi G, Bernardini J, Boccali T, Castaldi R, Dagnolo RT, Dell'orso R, Fiori F, Foà L, Giassi A, Kraan A, Ligabue F, Lomtadze T, Martini L, Messineo A, Palla F, Palmonari F, Segneri G, Serban AT, Spagnolo P, Tenchini R, Tonelli G, Venturi A, Verdini PG, Barone L, Cavallari F, Del Re D, Di Marco E, Diemoz M, Franci D, Grassi M, Longo E, Organtini G, Palma A, Pandolfi F, Paramatti R, Rahatlou S, Amapane N, Arcidiacono R, Argiro S, Arneodo M, Biino C, Botta C, Cartiglia N, Castello R, Costa M, Demaria N, Graziano A, Mariotti C, Marone M, Maselli S, Migliore E, Mila G, Monaco V, Musich M, Obertino MM, Pastrone N, Pelliccioni M, Romero A, Ruspa M, Sacchi R, Solano A, Staiano A, Trocino D, Vilela Pereira A, Ambroglini F, Belforte S, Cossutti F, Della Ricca G, Gobbo B, Montanino D, Penzo A, Chang S, Chung J, Kim DH, Kim GN, Kim JE, Kong DJ, Park H, Son DC, Kim Z, Kim JY, Song S, Hong B, Kim H, Kim JH, Kim TJ, Lee KS, Moon DH, Park SK, Rhee HB, Sim KS, Choi M, Kang S, Kim H, Park C, Park IC, Park S, Choi S, Choi Y, Choi YK, Goh J, Lee J, Lee S, Seo H, Yu I, Janulis M, Martisiute D, Petrov P, Sabonis T, Castilla Valdez H, De La Cruz Burelo E, Lopez-Fernandez R, Sánchez Hernández A, Villaseñor-Cendejas LM, Carrillo Moreno S, Salazar Ibarguen HA, Casimiro Linares E, Morelos Pineda A, Reyes-Santos MA, Allfrey P, Krofcheck D, Tam J, Butler PH, Signal T, Williams JC, Ahmad M, Ahmed I, Asghar MI, Hoorani HR, Khan WA, Khurshid T, Qazi S, Cwiok M, Dominik W, Doroba K, Konecki M, Krolikowski J, Frueboes T, Gokieli R, Górski M, Kazana M, Nawrocki K, Szleper M, Wrochna G, Zalewski P, Almeida N, David A, Faccioli P, Ferreira Parracho PG, Gallinaro M, Mini G, Musella P, Nayak A, Raposo L, Ribeiro PQ, Seixas J, Silva P, Soares D, 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A, Lazaridis C, Leonard J, Lomidze D, Loveless R, Mohapatra A, Polese G, Reeder D, Savin A, Smith WH, Swanson J, Weinberg M. First measurement of Bose-Einstein correlations in proton-proton collisions at √s=0.9 and 2.36 TeV at the LHC. PHYSICAL REVIEW LETTERS 2010; 105:032001. [PMID: 20867758 DOI: 10.1103/physrevlett.105.032001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Indexed: 05/29/2023]
Abstract
Bose-Einstein correlations have been measured using samples of proton-proton collisions at 0.9 and 2.36 TeV center-of-mass energies, recorded by the CMS experiment at the CERN Large Hadron Collider. The signal is observed in the form of an enhancement of pairs of same-sign charged particles with small relative four-momentum. The size of the correlated particle emission region is seen to increase significantly with the particle multiplicity of the event.
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Marraffino JM, Mason D, McBride P, McCauley T, Miao T, Mishra K, Mrenna S, Musienko Y, Newman-Holmes C, O'Dell V, Popescu S, Pordes R, Prokofyev O, Saoulidou N, Sexton-Kennedy E, Sharma S, Smith RP, Soha A, Spalding WJ, Spiegel L, Tan P, Taylor L, Tkaczyk S, Uplegger L, Vaandering EW, Vidal R, Whitmore J, Wu W, Yumiceva F, Yun JC, Acosta D, Avery P, Bourilkov D, Chen M, Di Giovanni GP, Dobur D, Drozdetskiy A, Field RD, Fu Y, Furic IK, Gartner J, Kim B, Klimenko S, Konigsberg J, Korytov A, Kotov K, Kropivnitskaya A, Kypreos T, Matchev K, Mitselmakher G, Pakhotin Y, Piedra Gomez J, Prescott C, Remington R, Schmitt M, Scurlock B, Sellers P, Wang D, Yelton J, Zakaria M, Ceron C, Gaultney V, Kramer L, Lebolo LM, Linn S, Markowitz P, Martinez G, Mesa D, Rodriguez JL, Adams T, Askew A, Chen J, Diamond B, Gleyzer SV, Haas J, Hagopian S, Hagopian V, Jenkins M, Johnson KF, Prosper H, Sekmen S, Veeraraghavan V, Baarmand MM, Guragain S, Hohlmann M, Kalakhety H, Mermerkaya H, Ralich R, Vodopiyanov I, Adams MR, Anghel IM, Apanasevich L, Bazterra VE, Betts RR, Callner J, Cavanaugh R, Dragoiu C, Garcia-Solis EJ, Gerber CE, Hofman DJ, Khalatian S, Lacroix F, Shabalina E, Smoron A, Strom D, Varelas N, Akgun U, Albayrak EA, Bilki B, Cankocak K, Clarida W, Duru F, Lae CK, McCliment E, Merlo JP, Mestvirishvili A, Moeller A, Nachtman J, Newsom CR, Norbeck E, Olson J, Onel Y, Ozok F, Sen S, Wetzel J, Yetkin T, Yi K, Barnett BA, Blumenfeld B, Bonato A, Eskew C, Fehling D, Giurgiu G, Gritsan AV, Guo ZJ, Hu G, Maksimovic P, Rappoccio S, Swartz M, Tran NV, Whitbeck A, Baringer P, Bean A, Benelli G, Grachov O, Murray M, Radicci V, Sanders S, Wood JS, Zhukova V, Bandurin D, Bolton T, Chakaberia I, Ivanov A, Kaadze K, Maravin Y, Shrestha S, Svintradze I, Wan Z, Gronberg J, Lange D, Wright D, Baden D, Boutemeur M, Eno SC, Ferencek D, Hadley NJ, Kellogg RG, Kirn M, Mignerey A, Rossato K, Rumerio P, Santanastasio F, Skuja A, Temple J, Tonjes MB, Tonwar SC, Twedt E, Alver B, Bauer G, Bendavid J, Busza W, Butz E, Cali IA, Chan M, D'Enterria D, Everaerts P, Gomez Ceballos G, Goncharov M, Hahn KA, Harris P, Kim Y, Klute M, Lee YJ, Li W, Loizides C, Luckey PD, Ma T, Nahn S, Paus C, Roland C, Roland G, Rudolph M, Stephans GSF, Sumorok K, Sung K, Wenger EA, Wyslouch B, Xie S, Yilmaz Y, Yoon AS, Zanetti M, Cole P, Cooper SI, Cushman P, Dahmes B, De Benedetti A, Dudero PR, Franzoni G, Haupt J, Klapoetke K, Kubota Y, Mans J, Petyt D, Rekovic V, Rusack R, Sasseville M, Singovsky A, Cremaldi LM, Godang R, Kroeger R, Perera L, Rahmat R, Sanders DA, Sonnek P, Summers D, Bloom K, Bose S, Butt J, Claes DR, Dominguez A, Eads M, Keller J, Kelly T, Kravchenko I, Lazo-Flores J, Lundstedt C, Malbouisson H, Malik S, Snow GR, Baur U, Iashvili I, Kharchilava A, Kumar A, Smith K, Strang M, Zennamo J, Alverson G, Barberis E, Baumgartel D, Boeriu O, Reucroft S, Swain J, Wood D, Zhang J, Anastassov A, Kubik A, Ofierzynski RA, Pozdnyakov A, Schmitt M, Stoynev S, Velasco M, Won S, Antonelli L, Berry D, Hildreth M, Jessop C, Karmgard DJ, Kolb J, Kolberg T, Lannon K, Lynch S, Marinelli N, Morse DM, Ruchti R, Slaunwhite J, Valls N, Warchol J, Wayne M, Ziegler J, Bylsma B, Durkin LS, Gu J, Killewald P, Ling TY, Williams G, Adam N, Berry E, Elmer P, Gerbaudo D, Halyo V, Hunt A, Jones J, Laird E, Lopes Pegna D, Marlow D, Medvedeva T, Mooney M, Olsen J, Piroué P, Stickland D, Tully C, Werner JS, Zuranski A, Acosta JG, Huang XT, Lopez A, Mendez H, Oliveros S, Ramirez Vargas JE, Zatzerklyaniy A, Alagoz E, Barnes VE, Bolla G, Borrello L, Bortoletto D, Everett A, Garfinkel AF, Gecse Z, Gutay L, Jones M, Koybasi O, Laasanen AT, Leonardo N, Liu C, Maroussov V, Merkel P, Miller DH, Neumeister N, Potamianos K, Shipsey I, Silvers D, Yoo HD, Zablocki J, Zheng Y, Jindal P, Parashar N, Cuplov V, Ecklund KM, Geurts FJM, Liu JH, Morales J, Padley BP, Redjimi R, Roberts J, Betchart B, Bodek A, Chung YS, de Barbaro P, Demina R, Flacher H, Garcia-Bellido A, Gotra Y, Han J, Harel A, Miner DC, Orbaker D, Petrillo G, Vishnevskiy D, Zielinski M, Bhatti A, Demortier L, Goulianos K, Hatakeyama K, Lungu G, Mesropian C, Yan M, Atramentov O, Gershtein Y, Gray R, Halkiadakis E, Hidas D, Hits D, Lath A, Rose K, Schnetzer S, Somalwar S, Stone R, Thomas S, Cerizza G, Hollingsworth M, Spanier S, Yang ZC, York A, Asaadi J, Eusebi R, Gilmore J, Gurrola A, Kamon T, Khotilovich V, Montalvo R, Nguyen CN, Pivarski J, Safonov A, Sengupta S, Toback D, Weinberger M, Akchurin N, Bardak C, Damgov J, Jeong C, Kovitanggoon K, Lee SW, Mane P, Roh Y, Sill A, Volobouev I, Wigmans R, Yazgan E, Appelt E, Brownson E, Engh D, Florez C, Gabella W, Johns W, Kurt P, Maguire C, Melo A, Sheldon P, Velkovska J, Arenton MW, Balazs M, Buehler M, Conetti S, Cox B, Hirosky R, Ledovskoy A, Neu C, Yohay R, Gollapinni S, Gunthoti K, Harr R, Karchin PE, Mattson M, Milstène C, Sakharov A, Anderson M, Bachtis M, Bellinger JN, Carlsmith D, Dasu S, Dutta S, Efron J, Gray L, Grogg KS, Grothe M, Hall-Wilton R, Herndon M, Klabbers P, Klukas J, Lanaro A, Lazaridis C, Leonard J, Lomidze D, Loveless R, Mohapatra A, Polese G, Reeder D, Savin A, Smith WH, Swanson J, Weinberg M. Transverse-momentum and pseudorapidity distributions of charged hadrons in pp collisions at square root of s = 7 TeV. PHYSICAL REVIEW LETTERS 2010; 105:022002. [PMID: 20867699 DOI: 10.1103/physrevlett.105.022002] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Indexed: 05/29/2023]
Abstract
Charged-hadron transverse-momentum and pseudorapidity distributions in proton-proton collisions at square root of s = 7 TeV are measured with the inner tracking system of the CMS detector at the LHC. The charged-hadron yield is obtained by counting the number of reconstructed hits, hit pairs, and fully reconstructed charged-particle tracks. The combination of the three methods gives a charged-particle multiplicity per unit of pseudorapidity dN(ch)/dη|(|η|<0.5) = 5.78 ± 0.01(stat) ± 0.23(syst) for non-single-diffractive events, higher than predicted by commonly used models. The relative increase in charged-particle multiplicity from square root of s = 0.9 to 7 TeV is [66.1 ± 1.0(stat) ± 4.2(syst)]%. The mean transverse momentum is measured to be 0.545 ± 0.005(stat) ± 0.015(syst) GeV/c. The results are compared with similar measurements at lower energies.
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Khaw KS, Ngan Kee WD, Chu CY, Ng FF, Tam WH, Critchley LAH, Rogers MS, Wang CC. Effects of different inspired oxygen fractions on lipid peroxidation during general anaesthesia for elective Caesarean section. Br J Anaesth 2010; 105:355-60. [PMID: 20576633 DOI: 10.1093/bja/aeq154] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND During general anaesthesia (GA) for Caesarean section (CS), fetal oxygenation is increased by administering an inspired oxygen fraction (Fi(o(2))) of 1.0. However, it is unclear whether such high Fi(o(2)) will increase oxygen free radical activity. METHODS We randomized 39 ASA I-II parturients undergoing elective CS under GA to receive 30% (Gp 30), 50% (Gp 50), or 100% (Gp 100) oxygen with nitrous oxide and sevoflurane adjusted to provide equivalent minimum alveolar concentration. Baseline maternal arterial blood before preoxygenation and maternal arterial, umbilical arterial and venous blood at delivery were sampled for assays of the by-product of lipid peroxidation, isoprostane, and for measurement of blood gases and oxygen content. RESULTS Maternal and umbilical isoprostane concentrations were similar among the three groups at delivery, despite significantly increased maternal and fetal oxygenation in Gp 100. However, paired comparisons of maternal delivery vs baseline concentration of isoprostane showed an increase at delivery for all groups [Gp 30: mean 342 (sd 210) vs 154 (65) pg ml(-1), P=0.016; Gp 50: 284 (129) vs 156 (79) pg ml(-1), P=0.009; Gp 100: 332 (126) vs 158 (68) pg ml(-1), P<0.001]. The magnitude of increase was similar in all three groups and independent of the Fi(o(2)) or duration after induction. CONCLUSIONS GA for CS is associated with a marked increase in free radical activity in the mother and baby. The mechanism is unclear but it is independent of the inspired oxygen in the anaesthetic mixture. Therefore, when 100% oxygen is administered with sevoflurane for GA, fetal oxygenation can be increased, without inducing an increase in lipid peroxidation.
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Pong JCF, Chu CY, Chu KO, Poon TCW, Ngai SM, Pang CP, Wang CC. Identification of hemopexin in tear film. Anal Biochem 2010; 404:82-5. [PMID: 20450875 DOI: 10.1016/j.ab.2010.04.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Accepted: 04/29/2010] [Indexed: 10/19/2022]
Abstract
Human tear fluid is a complex mixture of aqueous lipids, proteins, enzymes, and other biochemical and cellular elements. By conventional comparative proteomic approaches, we investigated the proteome in human tear fluid and compared the tear protein profile of normal control subjects with that of patients suffering from the ocular inflammatory disease vernal keratoconjunctivitis (VKC). Collected tear samples were directed to two-dimensional polyacrylamide gel electrophoresis protein separation and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry peptide identification. Six differentially expressed proteins-interleukin 4, phospholipase A2, albumin, lactoferrin, hemopexin, and lipocalin-were displayed. Hemopexin had not been reported previously in tear film. Enzyme-linked immunosorbent assay confirmed that hemopexin concentrations were significantly higher in VKC tear samples and increased with disease stages. The results implied clinical interest of hemopexin in the tear proteome and eye diseases.
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Wei JT, Chang P, Adachi I, Aihara H, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Bondar A, Bozek A, Bracko M, Browder TE, Chang YW, Chao Y, Chen A, Chen KF, Cheon BG, Chiang CC, Cho IS, Choi Y, Dalseno J, Drutskoy A, Dungel W, Eidelman S, Gabyshev N, Goldenzweig P, Golob B, Ha H, Han BY, Hayasaka K, Hayashii H, Hazumi M, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Itoh R, Iwasaki M, Iwasaki Y, Kah DH, Kaji H, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim YI, Kim YJ, Kinoshita K, Ko BR, Korpar S, Krizan P, Krokovny P, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Liu C, Liventsev D, Louvot R, Mandl F, Matyja A, McOnie S, Medvedeva T, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlova G, Park CW, Park H, Park HK, Park KS, Piilonen LE, Rozanska M, Sahoo H, Sakai K, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shen CP, Shiu JG, Shwartz B, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wedd R, Wicht J, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yuan CZ, Zhang ZP, Zivko T, Zupanc A, Zyukova O. Measurement of the differential branching fraction and forward-backward asymmetry for B --> K(*)l+l-. PHYSICAL REVIEW LETTERS 2009; 103:171801. [PMID: 19905747 DOI: 10.1103/physrevlett.103.171801] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2009] [Indexed: 05/28/2023]
Abstract
We study B --> K(*)l+l- decays (l = e, mu) based on a data sample of 657 x 10(6) BB pairs collected with the Belle detector at the KEKB e+e- collider. We report the differential branching fraction, isospin asymmetry, K* polarization, and the forward-backward asymmetry (A(FB)) as functions of q2 = M(ll)(2)c2. The fitted A(FB) spectrum exceeds the standard model expectation by 2.7 standard deviations. The measured branching fractions are B(B --> K*l+l-) = (10.7(-1.0)(+1.1) +/- 0.9) x 10(-7) and B(B --> Kl+l-) = (4.8(-0.4)(+0.5) +/- 0.3) x 10(-7), where the first errors are statistical and the second are systematic, with the muon to electron ratios R(K*) = 0.83 +/- 0.17 +/- 0.08 and R(K) = 1.03 +/- 0.19 +/- 0.06.
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Ko BR, Won E, Aihara H, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chen A, Cheon BG, Cho IS, Choi Y, Drutskoy A, Dungel W, Eidelman S, Gabyshev N, Goldenzweig P, Golob B, Ha H, Haba J, Han BY, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hyun HJ, Itoh R, Iwasaki M, Kah DH, Kang JH, Kapusta P, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim YI, Kim YJ, Kinoshita K, Korpar S, Krokovny P, Kuzmin A, Kwon YJ, Kyeong SH, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Liu C, Liu Y, Liventsev D, Louvot R, Macnaughton J, Mandl F, McOnie S, Medvedeva T, Miyata H, Miyazaki Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park HK, Park KS, Pestotnik R, Piilonen LE, Sahoo H, Sakai K, Sakai Y, Schneider O, Schwanda C, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shen CP, Shiu JG, Shwartz B, Stanic S, Staric M, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Trebelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CC, Wang CH, Wang P, Wang XL, Watanabe Y, Wedd R, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, Zivko T, Zupanc A, Zyukova O. Observation of the doubly cabibbo-suppressed decay D_{s};{+}-->K;{+}K;{+}pi;{-}. PHYSICAL REVIEW LETTERS 2009; 102:221802. [PMID: 19658854 DOI: 10.1103/physrevlett.102.221802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2009] [Indexed: 05/28/2023]
Abstract
We report the first observation of the doubly Cabibbo-suppressed decay D_{s};{+}-->K;{+}K;{+}pi;{-} using 605 fb;{-1} of data collected with the Belle detector at the KEKB asymmetric-energy e;{+}e;{-} collider. The branching ratio with respect to its Cabibbo-favored counterpart B(D_{s};{+}-->K;{+}K;{+}pi;{-})/B(D_{s};{+}-->K;{+}K;{-}pi;{+}) is (0.229+/-0.028+/-0.012)%, where the first uncertainty is statistical and the second is systematic. We also report a significantly improved measurement of the doubly Cabibbo-suppressed decay D;{+}-->K;{+}pi;{+}pi;{-}, with a branching ratio B(D;{+}-->K;{+}pi;{+}pi;{-})/B(D;{+}-->K;{-}pi;{+}pi;{+})=(0.569+/-0.018+/-0.014)%.
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Ng LWC, Yip SK, Wong HK, Yam GH, Liu YM, Lui WT, Wang CC, Choy KW. Adipose-derived stem cells from pregnant women show higher proliferation rate unrelated to estrogen. Hum Reprod 2009; 24:1164-70. [PMID: 19181742 DOI: 10.1093/humrep/dep001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Adipose tissue contains an abundant population of multipotent adipose-derived stem cells (ASCs) and has been an excellent source of mesenchymal stem cells for cell therapy and tissue engineering. To ensure successful cell therapies, consistency of stem cell performance across donors is critical. However, the effect of the donor's reproductive status on ASC proliferation rate and differentiation capacity is undefined. METHODS We investigated whether the yield and function of ASCs are affected by the woman's reproductive status: pregnancy, premenopause or menopause. ASCs were isolated from the abdomen of 15 women and their proliferation rates and differentiation capacities were compared by cell count. The capacity of ASCs to differentiate into the chondrogenic lineage was investigated by quantitative real-time polymerase chain reaction and immunohistochemistry. RESULTS There was no significant difference in the differentiation capacity between the three groups, whereas the proliferation rate of ASCs from pregnant women was significantly higher than from the other two groups (P < 0.05). The proliferation rate of ASCs after estrogen treatment remained unchanged. CONCLUSIONS Despite the higher proliferation rate in pregnant women, ASCs showed consistency in cell differentiation capacity and were unaffected by donor status. This suggests that factors other than estrogen are responsible for the difference in proliferation.
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Louvot R, Wicht J, Schneider O, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Balagura V, Bay A, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Browder TE, Chen A, Cheon BG, Chistov R, Cho IS, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Dungel W, Eidelman S, Gabyshev N, Goldenzweig P, Golob B, Ha H, Haba J, Hayasaka K, Hayashii H, Hazumi M, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Joshi NJ, Kah DH, Kang JH, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim SK, Kim YI, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Lin SW, Liventsev D, Mandl F, Matyja A, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nakano E, Nakao M, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlova G, Park CW, Park HK, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schümann J, Schwartz AJ, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shiu JG, Singh JB, Somov A, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Varner G, Vervink K, Wang CC, Wang CH, Wang P, Wang XL, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zhulanov V, Zivko T, Zupanc A, Zwahlen N, Zyukova O. Measurement of the Decay B_(s);(0)-->D_(s);(-)pi;(+) and Evidence for B_(s);(0)-->D_(s);(-/+)K;(+/-) in e;(+)e;(-) Annihilation at sqrt[s] approximately 10.87 GeV. PHYSICAL REVIEW LETTERS 2009; 102:021801. [PMID: 19257264 DOI: 10.1103/physrevlett.102.021801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2008] [Revised: 11/20/2008] [Indexed: 05/27/2023]
Abstract
We have studied B_(s);(0)-->D_(s);(-)pi;(+) and B_(s);(0)-->D_(s);(-/+)K;(+/-) decays using 23.6 fb;(-1) of data collected at the Upsilon(5S) resonance with the Belle detector at the KEKB e;(+)e;(-) collider. This highly pure B_(s);(0)-->D_(s);(-)pi;(+) sample is used to measure the branching fraction, B(B_(s);(0)-->D_(s);(-)pi;(+))=[3.67_(-0.33);(+0.35)(stat)-0.42+0.43(syst)+/-0.49(f_(s))]x10;(-3) (f_(s)=N_(B_(s);((*))B[over ]_(s);((*)))/N_(bb[over ])) and the fractions of B_(s);(0) event types at the Upsilon(5S) energy, in particular N_(B_(s);(*)B[over ]_(s);(*))/N_(B_(s);((*))B[over ]_(s);((*)))=(90.1_(-4.0);(+3.8)+/-0.2)%. We also determine the masses M(B_(s);(0))=(5364.4+/-1.3+/-0.7) MeV/c;(2) and M(B_(s);(*))=(5416.4+/-0.4+/-0.5) MeV/c;(2). In addition, we observe B_(s);(0)-->D_(s);(-/+)K;(+/-) decays with a significance of 3.5sigma and measure B(B_(s);(0)-->D_(s);(-/+)K;(+/-))=[2.4_(-1.0);(+1.2)(stat)+/-0.3(syst)+/-0.3(f_(s))]x10;(-4).
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Choy KW, Wang CC, Yip SK, Chan SSC. High isoprostane level in cardinal ligament-derived fibroblasts and urine sample of women with uterine prolapse. BJOG 2009. [DOI: 10.1111/j.1471-0528.2008.02013.x] [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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Lin WN, Lee LA, Wang CC, Li HY. Obstructive sleep apnea syndrome in an adolescent girl with hypertrophic lingual thyroid. Pediatr Pulmonol 2009; 44:93-5. [PMID: 19085926 DOI: 10.1002/ppul.20951] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We present a 14-year-old girl whose initial diagnosis was obstructive sleep apnea syndrome (OSAS) with symptoms of habitual snore, sleep breath holding, shortness of breath, and lump in throat. Lingual thyroid was diagnosed by thyroid scan and histology, and was treated by radioactive iodine therapy and endoscopic carbon dioxide laser therapy. Her OSAS completely subsided after lingual thyroid surgery. Physicians should be aware of rare causes of OSAS in children, such as lingual thyroid and certainly if accompanied by difficulties in swallowing and speech problems.
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Wang CC, Lee CM, Wu AS. Acrylic acid removal from synthetic wastewater and industrial wastewater using Ralstonia solanacearum and Acidovorax avenae isolated from a wastewater treatment system manufactured with polyacrylonitrile fiber. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2009; 60:3011-3016. [PMID: 19934523 DOI: 10.2166/wst.2009.710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Ralstonia solanacearum and Acidovorax avenae were isolated from a wastewater treatment system manufactured with polyacrylonitrile fiber. The investigation goal is to elucidate the effectiveness of Ralstonia solanacearum and Acidovorax avenae in treating acrylic acid from synthetic wastewater and industrial wastewater. The results reveal that Ralstonia solanacearum and Acidovorax avenae could utilize acrylic acid from synthetic wastewater for growth, when the initial acrylic acid concentration was below 1,009.1 mg/l and 1,383.4 mg/l, respectively. When the acrylic acid concentration was below 606.8 mg/l, the acrylic acid removal ability reached 96.7% and 100%, respectively. Both strains could tolerate acrylamide toxicity, but only Ralstonia solanacearum could tolerate acrylonitrile toxicity. Ralstonia solanacearum and Acidovorax avenae could utilize acrylic acid from industrial wastewater for growth, when the initial acrylic acid concentration was below 1,741.1 mg/l and 1,431.2 mg/l, respectively. When the acrylic acid concentration was below 690.8 mg/l, the acrylic acid removal efficiency reached 83.5% and 62.2%, respectively. Whether the acrylic acid existed in synthetic wastewater or in industrial wastewater, the removal efficiency of acrylic acid by Ralstonia solanacearum exceeded that by Acidovorax avena.
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Xu H, Lui WT, Chu CY, Ng PS, Wang CC, Rogers MS. Anti-angiogenic effects of green tea catechin on an experimental endometriosis mouse model. Hum Reprod 2008; 24:608-18. [PMID: 19088106 DOI: 10.1093/humrep/den417] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND The development of new blood vessels plays an essential role in growth and survival of endometriosis. Epigallocatechin gallate (EGCG) from green tea has powerful anti-angiogenic properties and our aim was to evaluate these properties in experimental endometriosis. METHODS AND RESULTS Eutopic endometrium from endometriosis patients was transplanted s.c. to severely compromised immunodeficient mice, randomly treated i.p. with EGCG (anti-angiogenic and -oxidant), Vitamin E (a non-angiogenic antioxidant) or saline for 2 weeks. The endometrial implant, including adjacent host outer skin and subcutaneous layers plus inner abdominal muscle and peritoneum, was collected. New microvessels were determined by species-specific immunohistochemistry. Angiogenic factors in lesions and abdominal muscle were detected by quantitative real-time PCR. Apoptosis was studied by terminal deoxynucleotidyltransferase-mediated dUTP nick-end labelling and quantitative real-time PCR. In saline control, endometrial implants developed new blood vessels with proliferating glandular epithelium and were tightly adhered to host subcutaneous and abdominal muscle layers. After EGCG, endometriotic lesions were smaller than control (P < 0.05), and glandular epithelium was smaller and eccentrically distributed. Angiogenesis in lesions from the implant and adjacent tissues was under-developed, and microvessel size and density were lower (both P < 0.01) than control. mRNA for angiogenic vascular endothelial growth factor A, but not hypoxia inducible factor 1, alpha subunit, was significantly down-regulated in lesions after EGCG (P < 0.05). In addition, apoptosis in the lesions was more obvious, and nuclear factor kappa B and mitogen activated protein kinase 1 mRNA levels were up-regulated (P < 0.05) after EGCG treatment. No differences were observed with Vitamin E treatment. CONCLUSIONS EGCG significantly inhibits the development of experimental endometriosis through anti-angiogenic effects.
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Chang DTH, Wang CC, Chen JW. Using a kernel density estimation based classifier to predict species-specific microRNA precursors. BMC Bioinformatics 2008; 9 Suppl 12:S2. [PMID: 19091019 PMCID: PMC2638167 DOI: 10.1186/1471-2105-9-s12-s2] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background MicroRNAs (miRNAs) are short non-coding RNA molecules participating in post-transcriptional regulation of gene expression. There have been many efforts to discover miRNA precursors (pre-miRNAs) over the years. Recently, ab initio approaches obtain more attention because that they can discover species-specific pre-miRNAs. Most ab initio approaches proposed novel features to characterize RNA molecules. However, there were fewer discussions on the associated classification mechanism in a miRNA predictor. Results This study focuses on the classification algorithm for miRNA prediction. We develop a novel ab initio method, miR-KDE, in which most of the features are collected from previous works. The classification mechanism in miR-KDE is the relaxed variable kernel density estimator (RVKDE) that we have recently proposed. When compared to the famous support vector machine (SVM), RVKDE exploits more local information of the training dataset. MiR-KDE is evaluated using a training set consisted of only human pre-miRNAs to predict a benchmark collected from 40 species. The experimental results show that miR-KDE delivers favorable performance in predicting human pre-miRNAs and has advantages for pre-miRNAs from the genera taxonomically distant to humans. Conclusion We use a novel classifier of which the characteristic of exploiting local information is particularly suitable to predict species-specific pre-miRNAs. This study also provides a comprehensive analysis from the view of classification mechanism. The good performance of miR-KDE encourages more efforts on the classification methodology as well as the feature extraction in miRNA prediction.
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Goldenzweig P, Schwartz AJ, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Bay A, Bedny I, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Cheon BG, Chiang CC, Chistov R, Cho IS, Choi Y, Dalseno J, Dash M, Drutskoy A, Eidelman S, Golob B, Ha H, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Iwasaki M, Kah DH, Kang JH, Kawasaki T, Kichimi H, Kim HJ, Kim SK, Kim YI, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Lin SW, Liu C, Liu Y, MacNaughton J, Mandl F, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Nagamine T, Nakano E, Nakao M, Nakazawa H, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park HK, Peak LS, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schneider O, Schümann J, Schwanda C, Seidl R, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Somov A, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Tamura N, Tanaka M, Teramoto Y, Tikhomirov I, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wedd R, Wicht J, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Zhang CC, Zhang ZP, Zhulanov V, Zivko T, Zupanc A, Zyukova O. Evidence for neutral B meson decays to omegaK*0. PHYSICAL REVIEW LETTERS 2008; 101:231801. [PMID: 19113539 DOI: 10.1103/physrevlett.101.231801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2008] [Indexed: 05/27/2023]
Abstract
We present the results of a study of the charmless vector-vector decay B0-->omegaK*0 with 657 x 10(6) BB pairs collected with the Belle detector at the KEKB e+e- collider. We measure the branching fraction to be B(B0-->omegaK*0) = [1.8+/-0.7(stat)+/-0.3(syst)]x 10(-6) with 3.0sigma significance. We also perform a helicity analysis of the omega and K*0 vector mesons, and obtain the longitudinal polarization fraction fL(B0-->omegaK*0) = 0.56+/-0.29(stat) -0.08(+0.18)(syst). Finally, we measure a large nonresonant branching fraction B[B0-->omegaK+pi(-);M Kpi in(0.755,1.250) GeV/c2] = [5.1+/-0.7(stat)+/-0.7(syst)]x 10(-6) with a significance of 9.5sigma.
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Law LW, Lau TK, Fung TY, Leung TY, Wang CC, Choy KW. De novo 16p13.11 microdeletion identified by high-resolution array CGH in a fetus with increased nuchal translucency. BJOG 2008; 116:339-43. [DOI: 10.1111/j.1471-0528.2008.01948.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Khaw KS, Wang CC, Ngan Kee WD, Tam WH, Ng FF, Critchley LAH, Rogers MS. Supplementary oxygen for emergency Caesarean section under regional anaesthesia. Br J Anaesth 2008; 102:90-6. [PMID: 19011261 DOI: 10.1093/bja/aen321] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Controversy still exists if the administration of supplementary oxygen to patients having emergency Caesarean section (CS) under regional anaesthesia is beneficial or potentially harmful. Therefore, in a prospective double-blinded study, we randomized patients having emergency CS under regional anaesthesia to receive either air or 60% oxygen until delivery and compared the effects on fetal oxygenation and lipid-peroxidation in the mother and baby. METHODS We recruited 131 women having emergency CS under regional anaesthesia. Either 21% (air group) or 60% oxygen (oxygen group) was administered using a Venturi-type facemask until delivery. We compared the oxygen exposure duration, umbilical arterial (UA) and venous (UV) blood gases and oxygen content, and plasma concentration of 8-isoprostane. Subanalysis was performed according to whether or not fetal compromise was considered present. RESULTS Data from 125 patients were analysed. For the oxygen group vs the air group, there were greater values for UA PO(2) [mean 2.2 (SD 0.5) vs 1.9 (0.6) kPa, P=0.01], UA O(2) content [6.6 (2.5) vs 4.9 (2.8) ml dl(-1), P=0.006], UV PO(2) [3.8 (0.8) vs 3.2 (0.8) kPa, P<0.0001], and UV O(2) content [12.9 (3.5) vs 10.4 (3.8) ml dl(-1), P=0.001]. There was no difference between the groups in maternal, UA, or UV 8-isoprostane concentration. Apgar scores and UA pH were similar between the groups. Similar changes were observed regardless of whether fetal compromise was considered present (n=37) or not (n=88). CONCLUSIONS Breathing 60% oxygen during emergency CS under regional anaesthesia increased fetal oxygenation with no associated increase in lipid-peroxidation in the mother or fetus.
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Wang CC, Hsu YC, Hsieh MC, Yang SP, Su FC, Lee TM. Effects of nano-surface properties on initial osteoblast adhesion and Ca/P adsorption ability for titanium alloys. NANOTECHNOLOGY 2008; 19:335709. [PMID: 21730635 DOI: 10.1088/0957-4484/19/33/335709] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Titanium alloys (Ti6Al4V), while subjected to high temperature surface treatment, experience altered nano-surface characteristics. The effects of such surface treatments are examined, including the initial adhesion force experienced by osteoblasts, the Ca/P adsorption capability, and the nano-surface properties, including the amounts of amphoteric Ti-OH groups, surface topography, and surface roughness. The initial adhesion force is considered a quantitative indicator of cyto-compatibility in vitro. Previously, a cyto-detacher was applied in a pioneer attempt measuring the initial adhesion force of fibroblasts on a metal surface. Presently, the cyto-detacher is further applied to evaluate the initial adhesion force of osteoblasts. Results reveal that (1) titanium alloys subjected to heat treatment could promote the adsorption capability of Ca and P; (2) titanium alloys subjected to heat treatment could have higher initial osteoblast adhesion forces; (3) the adhesion strength of osteoblasts, ranging from 38.5 to 58.9 nN (nanonewtons), appears stronger for rougher surfaces. It is concluded that the heat treatment could have impacted the biocompatibility in terms of the initial osteoblast adhesion force and Ca/P adsorption capability.
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Pan MH, Huang SC, Liao YP, Schaue D, Wang CC, Stout DB, Barrio JR, McBride WH. FLT-PET imaging of radiation responses in murine tumors. Mol Imaging Biol 2008; 10:325-34. [PMID: 18670825 DOI: 10.1007/s11307-008-0158-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 03/28/2008] [Accepted: 05/06/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND 3'-[F-18]fluoro-3'-deoxythymidine (FLT) traces thymidine phosphorylation catalyzed by thymidine kinase during cell proliferation. Knowing the rate of cell proliferation during cancer treatment, such as radiation therapy, would be valuable in assessing whether tumor recurrence is likely and might indicate the need for additional treatments. However, the relationship between FLT kinetics and the effects of radiation is not well-understood. Nor has the method for optimal quantification of FLT uptake within the irradiated tumor microenvironment been extensively examined. MATERIALS AND METHODS We performed dynamic FLT-positron emission tomography (PET) studies (60 min) on 22 mice implanted subcutaneously with syngeneic mammary MCaK tumors bilaterally in the shoulder area. A day before the FLT-PET imaging, the tumor on the right side was irradiated with a single dose (0, 2.5, 5, 10, or 20 Gy) or with fractionated exposures (4x2.5 Gy given in 12 h intervals). Standardized uptake value (SUVs) of FLT on tumors at 10 and 60 min post injection were calculated; model fitting was used to estimate the kinetic parameters. Significant radiation-induced changes were shown by comparing the irradiated tumor with the control tumor in the same animal and by comparing it to nonirradiated mice. The effect of radiation on MCaK cell cycle parameters and FLT uptake was also examined in vitro. RESULTS In vivo FLT kinetics were sensitive to radiation doses of 5 Gy and higher (administered 1 day earlier), as judged by SUV semiquantitative measures and by modeling. Single irradiation with 10 Gy had greater impact on SUVs and kinetic parameters than fractionated exposures. Overall, the uptake constant Ki appeared to be the best marker for these radiation effects. FLT uptake by irradiated cells in vitro at various doses gave similar findings, and the in vitro FLT uptake correlated well with Ki. Radiation-induced G2/M arrest appeared to influence FLT uptake, and this was more pronounced after single than fractionated doses. CONCLUSION The kinetics of FLT uptake into murine mammary tumors was altered 1 day after radiation treatment. The dose-dependent response correlated well with in vitro FLT cellular uptake. Parameters (e.g., Ki) derived from FLT kinetics are expected to be useful for assessing the efficacy of irradiation treatment of tumors.
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Choy KW, Liu YM, Chu CY, Wang CC, Lui WT, Lee LL, Pang MW, Rogers MS, Yip SK. High isoprostane level in cardinal ligament-derived fibroblasts and urine sample of women with uterine prolapse. BJOG 2008; 115:1179-83. [DOI: 10.1111/j.1471-0528.2008.01806.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Iwabuchi M, Nakao M, Adachi I, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bhardwaj V, Bitenc U, Bozek A, Bracko M, Browder TE, Chen A, Chen WT, Cheon BG, Cho IS, Choi Y, Dalseno J, Dash M, Drutskoy A, Eidelman S, Fujikawa M, Gabyshev N, Ha H, Haba J, Hayasaka K, Hazumi M, Heffernan D, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Kah DH, Kaji H, Kang JH, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim YI, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lee JS, Lee MJ, Lee SE, Lesiak T, Limosani A, Lin SW, Liu C, Liu Y, Liventsev D, Mandl F, Matyja A, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Moloney GR, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park HK, Park KS, Peak LS, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schneider O, Schümann J, Schwanda C, Sekiya A, Senyo K, Shapkin M, Shibuya H, Shiu JG, Shwartz B, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Suzuki S, Tanaka M, Teramoto Y, Tikhomirov I, Trabelsi K, Uchida Y, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wicht J, Won E, Yamashita Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Search for B+-->D*+pi0 decay. PHYSICAL REVIEW LETTERS 2008; 101:041601. [PMID: 18764317 DOI: 10.1103/physrevlett.101.041601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2008] [Indexed: 05/26/2023]
Abstract
We report on a search for the doubly Cabibbo suppressed decay B+-->D*+pi0, based on a data sample of 657x10(6) BB pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We find no significant signal and set an upper limit of B(B+-->D*+pi0)<3.6x10(-6) at the 90% confidence level. This limit can be used to constrain the ratio between suppressed and favored B-->D*pi decay amplitudes, r<0.051, at the 90% confidence level.
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Chen JH, Wang MZ, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bondar A, Bozek A, Bracko M, Browder TE, Chang MC, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Cho IS, Choi SK, Choi Y, Dalseno J, Dash M, Drutskoy A, Eidelman S, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Joshi NJ, Kah DH, Kaji H, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kim HJ, Kim SK, Kim YJ, Kinoshita K, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lee JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Liu C, Liventsev D, Mandl F, Matyja A, McOnie S, Medvedeva T, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Peak LS, Pestotnik R, Piilonen LE, Rozanska M, Sahoo H, Sakai Y, Schneider O, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shiu JG, Singh JB, Somov A, Stanic S, Staric M, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Trabelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Vervink K, Villa S, Vinokurova A, Wang CC, Wang CH, Wang P, Wang XL, Watanabe Y, Wedd R, Won E, Yamamoto H, Yamashita Y, Zhang CC, Zhang ZP, Zhulanov V, Zupanc A. Observation of B{0}-->ppK*0 with a large K*0 polarization. PHYSICAL REVIEW LETTERS 2008; 100:251801. [PMID: 18643652 DOI: 10.1103/physrevlett.100.251801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2008] [Indexed: 05/26/2023]
Abstract
Using a 492 fb{-1} data sample collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e{+}e{-} collider, we observe the decay B{0}-->ppK*0 with a branching fraction of (1.18{-0.25}{+0.29}(stat)+/-0.11(syst))x10{-6}. We study the decay dynamics of B{0}-->ppK*0 and compare with B{+}-->ppK*+. The K*0 meson is found to be almost 100% polarized (with a fraction of (101+/-13+/-3)% in the helicity zero state), while the K*+ meson has a (32+/-17+/-9)% fraction in the helicity zero state. The direct CP asymmetries for B{0}-->ppK*0 and B{+}-->ppK*+ are measured to be -0.08+/-0.20+/-0.02 and -0.01+/-0.19+/-0.02, respectively. In addition, we report improved measurements of the branching fractions B(B{+}-->ppK*+)=(3.38{-0.60}{+0.73}+/-0.39)x10{-6} and B(B{0}-->ppK{0})=(2.51{-0.29}{+0.35}+/-0.21)x10{-6}, which supersede our previous measurements.
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Feng YS, Lee CM, Wang CC. Methods for increasing nitrile biotransformation into amides using Mesorhizobium sp. PRIKLADNAIA BIOKHIMIIA I MIKROBIOLOGIIA 2008; 44:304-307. [PMID: 18663953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Nitriles are potential soil pollutants from industrial wastewater. There has been increased demand for efficient process for nitrile degradation process. Nitrile hydratase (NHase) has been extensively used in the production of acrylamide and treatment of organocyanide contaminated industrial effluents. The NHase of Mesorhizobium sp., isolated from polyacrylonitrile activated sludge from fiber manufacturing wastewater treatment systems was studied in the whole bacterial cells. Different chemicals were added to observe the variation in the percentage of acrylonitrile converted into acrylamide. The result indicated that cobalt ions were the NHase cofactor and could increase the NHase activity. The addition of propionaldehyde, or butyraldehyde could enhance the acrylonitrile conversion rate. Therefore, acrylamide could be accumulated effectively and the percentage of acrylonitrile converted into acrylamide increased. Propionaldehyde was the most effective NHase activator. The percentage of acrylonitrile converted into acrylamide was nearly 100% at 3.8 h when propionaldehyde was added at about 207.4 mg/l. The addition of benzaldehyde was unable to increase the percentage of acrylonitrile converted into acrylamide. EDTA and acrylamide showed no effect on NHase activity. However, 0.1 mg/l of Ag2SO4 would slightly inhibit NHase activity, producing an acrylonitrile conversion rate of 492.9 mg/l with 54.9% converted at 29.1 h. The ability of the acrylonitrile biotransformation was completely inhibited if the Ag2SO4 concentration was above 0.5 mg/l.
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Chen KF, Hou WS, Shapkin M, Sokolov A, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Balagura V, Bay A, Belous K, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen WT, Chistov R, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Gabyshev N, Golob B, Ha H, Haba J, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kah DH, Kang JH, Kapusta P, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim HO, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lange JS, Lee JS, Lee MJ, Lesiak T, Limosani A, Lin SW, Liu Y, Liventsev D, Mandl F, McOnie S, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Moloney GR, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park KS, Pestotnik R, Piilonen LE, Sakai Y, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shen CP, Shibuya H, Shiu JG, Shwartz B, Somov A, Stanic S, Staric M, Sumiyoshi T, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Vervink K, Villa S, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wedd R, Wicht J, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yuan CZ, Yusa Y, Zhang CC, Zhang ZP, Zupanc A. Observation of anomalous upsilon(1S)pi+pi(-) and upsilon(2S)pi+pi(-) production near the upsilon(5S) resonance. PHYSICAL REVIEW LETTERS 2008; 100:112001. [PMID: 18517777 DOI: 10.1103/physrevlett.100.112001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Indexed: 05/26/2023]
Abstract
We report the first observation of e;{+}e;{-}-->Upsilon(1S)pi;{+}pi;{-}, Upsilon(2S)pi;{+}pi;{-}, and first evidence for e;{+}e;{-}-->Upsilon(3S)pi;{+}pi;{-}, Upsilon(1S)K+K-, near the peak of the Upsilon(5S) resonance at sqrt[s] approximately 10.87 GeV. The results are based on a data sample of 21.7 fb;{-1} collected with the Belle detector at the KEKB e;{+}e;{-} collider. Attributing the signals to the Upsilon(5S) resonance, the partial widths Gamma(Upsilon(5S)-->Upsilon(1S)pi;{+}pi;{-})=0.59+/-0.04(stat)+/-0.09(syst) MeV and Gamma(Upsilon(5S)-->Upsilon(2S)pi;{+}pi;{-})=0.85+/-0.07(stat)+/-0.16(syst) MeV are obtained from the observed cross sections. These values exceed by more than 2 orders of magnitude the previously measured partial widths for dipion transitions between lower Upsilon resonances.
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Brodzicka J, Palka H, Adachi I, Aihara H, Aulchenko V, Bakich AM, Barberio E, Bay A, Bedny I, Bitenc U, Bondar A, Bracko M, Browder TE, Chang MC, Chang P, Chen A, Chen WT, Cheon BG, Chiang CC, Chistov R, Cho IS, Choi SK, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Gabyshev N, Go A, Gokhroo G, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kawai H, Kawasaki T, Kichimi H, Kim HO, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lange JS, Lee JS, Lee MJ, Lee SE, Lesiak T, Limosani A, Liventsev D, Mandl F, McOnie S, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mori T, Nagasaka Y, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park H, Pestotnik R, Piilonen LE, Rozanska M, Sakai Y, Schneider O, Seidl R, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shiu JG, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Sumiyoshi T, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Vervink K, Villa S, Vinokurova A, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yuan CZ, Yusa Y, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, Zwahlen N. Observation of a new DsJ meson in B+-->D0D0K+ decays. PHYSICAL REVIEW LETTERS 2008; 100:092001. [PMID: 18352700 DOI: 10.1103/physrevlett.100.092001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2007] [Indexed: 05/26/2023]
Abstract
We report the observation of a new DsJ meson produced in B+-->D0DsJ-->D0D0K+. This state has a mass of M=2708+/-9(-10)(+11) MeV/c2, a width Gamma=108+/-23(-31)(+36) MeV/c2 and a 1- spin-parity. The statistical significance of this observation is 8.4 sigma. The results are based on an analysis of 449 x 10(6) BB events collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.
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Jain S, Wang CC, Adeyeye AO. Magnetoresistance behavior of ferromagnetic nanorings in a ring-wire hybrid configuration. NANOTECHNOLOGY 2008; 19:085302. [PMID: 21730723 DOI: 10.1088/0957-4484/19/8/085302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We present a technique for probing the magnetic configurations in ferromagnetic rings electrically without placing the electrical contact leads directly on the nanorings, but on wires attached to the ring structures. The magnetic configurations in pseudo spin valve rectangular and elliptical rings of width in the range from 60 to 300 nm have been systematically mapped using this technique. The giant magnetoresistance (GMR) responses for both the rings exhibit distinct switching fields and features corresponding to identifiable magnetization states in different segments of the nanostructures.
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Wang CC, Tsai CR. Data compression by the recursive algorithm of exponential bidirectional associative memory. IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS. PART B, CYBERNETICS : A PUBLICATION OF THE IEEE SYSTEMS, MAN, AND CYBERNETICS SOCIETY 2008; 28:125-34. [PMID: 18255931 DOI: 10.1109/3477.662754] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A novel data compression algorithm utilizing the histogram and the high-capacity exponential bidirectional associative memory (eBAM) is presented. Since eBAM has been proved to possess high capacity and fault tolerance, it is suitable to be utilized in the data compression using the table-lookup scheme. The histogram approach is employed to extract the feature vectors in the given data. The result of the simulation of the proposed algorithm turns out to be better than the traditional methods.
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Ushiroda Y, Sumisawa K, Taniguchi N, Adachi I, Aihara H, Arinstein K, Aushev T, Bahinipati S, Bakich AM, Balagura V, Barberio E, Belous K, Bitenc U, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen WT, Cheon BG, Chistov R, Cho IS, Choi Y, Dalseno J, Dash M, Eidelman S, Epifanov D, Gabyshev N, Golob B, Ha H, Haba J, Hara K, Hara T, Hayasaka K, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hyun HJ, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki Y, Kah DH, Kang JH, Kawai H, Kawasaki T, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lee MJ, Lee SE, Lesiak T, Lin SW, Liventsev D, Mandl F, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohapatra D, Moloney GR, Nagasaka Y, Nakao M, Nakazawa H, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Park CW, Park H, Peak LS, Piilonen LE, Sahoo H, Sakai Y, Schneider O, Schümann J, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shiu JG, Shwartz B, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Sumiyoshi T, Tajima O, Takasaki F, Tamai K, Tanaka M, Teramoto Y, Tikhomirov I, Trabelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Vervink K, Villa S, Wang CC, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang ZP, Zupanc A, Zyukova O. Time-dependent CP-violating asymmetry in B0-->rho0gamma decays. PHYSICAL REVIEW LETTERS 2008; 100:021602. [PMID: 18232853 DOI: 10.1103/physrevlett.100.021602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2007] [Indexed: 05/25/2023]
Abstract
We report the first measurement of CP-violation parameters in B0-->rho0gamma decays based on a data sample of 657x10(6)BB pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We obtain the time-dependent and direct CP-violating parameters, Srho0gamma=-0.83+/-0.65(stat)+/-0.18(syst) and Arho0gamma=-0.44+/-0.49(stat)+/-0.14(syst), respectively.
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Chen KF, Adachi I, Aihara H, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bitenc U, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chao Y, Chen A, Cheon BG, Chiang CC, Cho IS, Choi Y, Choi YK, Cole S, Danilov M, Dash M, Drutskoy A, Eidelman S, Fratina S, Gabyshev N, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Joshi NJ, Kajiwara S, Kang JH, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lee JS, Lee SE, Lesiak T, Lin SW, Liu Y, Liventsev D, Mandl F, Marlow D, Matyja A, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Nagasaka Y, Nakamura I, Nakao M, Nishida S, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Park H, Park KS, Pestotnik R, Piilonen LE, Sakai Y, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shinomiya S, Shiu JG, Shwartz B, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Tajima O, Takasaki F, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Trabelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Villa S, Vinokurova A, Wang CC, Wang CH, Wang MZ, Wang P, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang CC, Zhang ZP, Zhilich V, Zupanc A. Search for B --> h(*)nunu[over ] decays at Belle. PHYSICAL REVIEW LETTERS 2007; 99:221802. [PMID: 18233279 DOI: 10.1103/physrevlett.99.221802] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2007] [Indexed: 05/25/2023]
Abstract
We present a search for the rare decays B --> h(*)nunu[over ], where h(*) stands for a light meson. A data sample of 535 x 10{6} BB[over ] pairs collected with the Belle detector at the KEKB e{+}e{-} collider is used. Signal candidates are required to have an accompanying B meson fully reconstructed in a hadronic mode and signal side particles consistent with a single h(*) meson. No significant signal is observed and we set upper limits on the branching fractions at 90% confidence level. The limits on B{0} --> K{*0}nunu[over ] and B{+} --> K{+}nunu[over ] decays are more stringent than the previous constraints, while the first searches for B{0} --> K{0}nunu[over ], pi{0}nunu[over ], rho{0}nunu[over ], varphinunu[over ] and B{+} --> K{*+}nunu[over ], rho{+}nunu[over ] are reported.
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Tajima O, Hazumi M, Adachi I, Aihara H, Aulchenko V, Aushev T, Bakich AM, Barberio E, Bay A, Bedny I, Bhardwaj V, Bitenc U, Bozek A, Bracko M, Browder TE, Chang MC, Chang P, Chen A, Chen KF, Chen WT, Cheon BG, Chiang CC, Chistov R, Cho IS, Choi Y, Choi YK, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Go A, Gokhroo G, Golob B, Haba J, Hayasaka K, Hayashii H, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Joshi NJ, Kah DH, Kaji H, Kang JH, Kataoka SU, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lange JS, Lee JS, Lee MJ, Lee SE, Lesiak T, Li J, Lin SW, Liventsev D, Mandl F, Marlow D, McOnie S, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohapatra D, Nagasaka Y, Nakano E, Nakao M, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okuno S, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park H, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Schneider O, Sekiya A, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shiu JG, Shwartz B, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Villa S, Vinokurova A, Wang CC, Wang CH, Wang MZ, Wang P, Watanabe Y, Wedd R, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yuan CZ, Yusa Y, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Search for the CP-violating decays Upsilon(4S)-->B0B0-->J/psiKS0+J/psi(etac)KS0. PHYSICAL REVIEW LETTERS 2007; 99:211601. [PMID: 18233206 DOI: 10.1103/physrevlett.99.211601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Indexed: 05/25/2023]
Abstract
We report the first search for CP-violating decays of the Upsilon(4S) using a data sample that contains 535 x 10(6) Upsilon(4S) mesons with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. A partial reconstruction technique is employed to enhance the signal sensitivity. No significant signals were observed. We obtain an upper limit of 4 x 10(-7) at the 90% confidence level for the branching fractions of the CP violating modes, Upsilon(4S)-->B(0)B(0)-->J/psiK(S)(0)+J/psi(eta(c))K(S)(0). Extrapolating the result, we find that an observation with 5sigma significance is expected with a 30 ab(-1) data sample, which is within the reach of a future super B factory.
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Matyja A, Rozanska M, Adachi I, Aihara H, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Balagura V, Barberio E, Bedny I, Bhardwaj V, Bitenc U, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chen A, Chen KF, Cheon BG, Chistov R, Cho IS, Choi Y, Choi YK, Dalseno J, Dash M, Eidelman S, Fratina S, Gabyshev N, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki Y, Kaji H, Kajiwara S, Kang JH, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Kozakai Y, Krizan P, Krokovny P, Kumar R, Kuo CC, Kwon YJ, Lee JS, Lee SE, Lesiak T, Lin SW, Liu Y, Liventsev D, Mandl F, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nagasaka Y, Nakamura I, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park H, Park KS, Pestotnik R, Piilonen LE, Sakai Y, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibuya H, Shinomiya S, Shiu JG, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Sumisawa K, Sumiyoshi T, Tajima O, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Urquijo P, Ushiroda Y, Varner G, Varvell KE, Vervink K, Villa S, Wang CC, Wang CH, Wang P, Watanabe Y, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang ZP, Zupanc A. Observation of B(0)-->D(*-)tau(+)nu(tau) decay at Belle. PHYSICAL REVIEW LETTERS 2007; 99:191807. [PMID: 18233068 DOI: 10.1103/physrevlett.99.191807] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2007] [Indexed: 05/25/2023]
Abstract
We report an observation of the decay B{0}-->D{*-}tau{+}nu{tau} in a data sample containing 535x10{6} BB pairs collected with the Belle detector at the KEKB asymmetric-energy e{+}e{-} collider. We find a signal with a significance of 5.2sigma and measure the branching fraction B(B{0}-->D{*-}tau{+}nu{tau})=(2.02{-0.37}{+0.40}(stat)+/-0.37(syst))%. This is the first observation of an exclusive B decay with a b-->ctaunu{tau} transition.
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139
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Yuan CZ, Shen CP, Wang P, McOnie S, Adachi I, Aihara H, Aulchenko V, Aushev T, Bahinipati S, Balagura V, Barberio E, Bedny I, Bitenc U, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chang P, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Cho IS, Choi Y, Dalseno J, Danilov M, Dash M, Eidelman S, Fratina S, Gabyshev N, Golob B, Ha H, Haba J, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Kah DH, Kaji H, Kang JH, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lee SE, Lesiak T, Lin SW, Liu Y, Liventsev D, Mandl F, Marlow D, Matyja A, Medvedeva T, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nagasaka Y, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park H, Park KS, Peak LS, Piilonen LE, Sakai Y, Schneider O, Schümann J, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shiu JG, Shwartz B, Singh JB, Sokolov A, Somov A, Staric M, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Uehara S, Unno Y, Uno S, Usov Y, Varner G, Varvell KE, Vervink K, Villa S, Vinokurova A, Wang CC, Wang CH, Wang XL, Watanabe Y, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Measurement of the e+e- -->pi+pi- J/psi cross section via initial-state radiation at Belle. PHYSICAL REVIEW LETTERS 2007; 99:182004. [PMID: 17995399 DOI: 10.1103/physrevlett.99.182004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2007] [Indexed: 05/25/2023]
Abstract
The cross section for e(+)e(-)-->pi(+)pi(-)J/psi between 3.8 and 5.5 GeV/c(2) is measured using a 548 fb(-1) data sample collected on or near the Upsilon(4S) resonance with the Belle detector at KEKB. A peak near 4.25 GeV/c(2), corresponding to the so called Y(4260), is observed. In addition, there is another cluster of events at around 4.05 GeV/c(2). A fit using two interfering Breit-Wigner shapes describes the data better than one that uses only the Y(4260), especially for the lower-mass side of the 4.25 GeV enhancement.
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Wang XL, Yuan CZ, Shen CP, Wang P, Adachi I, Aihara H, Arinstein K, Aushev T, Bakich AM, Barberio E, Bedny I, Bhardwaj V, Bitenc U, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chen A, Chen KF, Cheon BG, Chiang CC, Chistov R, Cho IS, Choi SK, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Gabyshev N, Go A, Gokhroo G, Ha H, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki Y, Kah DH, Kang JH, Kawai H, Kawasaki T, Kichimi H, Kim HO, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Lange JS, Lee JS, Lee MJ, Lee SE, Lesiak T, Limosani A, Lin SW, Liu Y, Liventsev D, Mandl F, McOnie S, Medvedeva T, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mori T, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park KS, Pestotnik R, Piilonen LE, Poluektov A, Sahoo H, Sakai Y, Schneider O, Sekiya A, Sevior ME, Shapkin M, Shibuya H, Shiu JG, Shwartz B, Singh JB, Sokolov A, Somov A, Stanic S, Staric M, Sumiyoshi T, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tikhomirov I, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Villa S, Vinokurova A, Wang CC, Wang CH, Watanabe Y, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Observation of two resonant structures in e+ e- -->pi+ pi- psi(2S) via initial-state radiation at Belle. PHYSICAL REVIEW LETTERS 2007; 99:142002. [PMID: 17930661 DOI: 10.1103/physrevlett.99.142002] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Indexed: 05/25/2023]
Abstract
The cross section for e+ e- --> pi+ pi- psi(2S) between threshold and sqrt[s]=5.5 GeV is measured using 673 fb(-1) of data on and off the Upsilon(4S) resonance collected with the Belle detector at KEKB. Two resonant structures are observed in the pi+ pi- psi(2S) invariant-mass distribution, one at 4361 +/- 9 +/- 9 MeV/c2 with a width of 74 +/- 15 +/- 10 MeV/c2, and another at 4664 +/- 11 +/- 5 MeV/c2 with a width of 48 +/- 15 +/- 3 MeV/c2, if the mass spectrum is parametrized with the coherent sum of two Breit-Wigner functions. These values do not match those of any of the known charmonium states.
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Go A, Bay A, Abe K, Aihara H, Anipko D, Aulchenko V, Aushev T, Bakich AM, Barberio E, Belous K, Bitenc U, Bizjak I, Blyth S, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi Y, Choi YK, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Golob B, Gorisek A, Ha H, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Jacoby C, Kang JH, Katayama N, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Lee J, Lee MJ, Lesiak T, Limosani A, Lin SW, Liu Y, Liventsev D, Matsumoto T, Matyja A, McOnie S, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Peak LS, Pestotnik R, Peters M, Piilonen LE, Sahoo H, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Seidl R, Senyo K, Shapkin M, Shibuya H, Shwartz B, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Varner G, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wicht J, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zupanc A. Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Upsilon(4S) --> B0 B0 decays. PHYSICAL REVIEW LETTERS 2007; 99:131802. [PMID: 17930575 DOI: 10.1103/physrevlett.99.131802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2007] [Indexed: 05/25/2023]
Abstract
The neutral B meson pair produced at the Upsilon(4S) should exhibit a nonlocal correlation of the type discussed by Einstein, Podolsky, and Rosen. We measure this correlation using the time-dependent flavor asymmetry of semileptonic B(0) decays, which we compare with predictions from quantum mechanics and two local realistic models. The data are consistent with quantum mechanics, and inconsistent with the other models. Assuming that some B pairs disentangle to produce B(0) and B(0) with definite flavor, we find a decoherent fraction of 0.029 +/ -0.057, consistent with no decoherence.
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Lin SW, Chang P, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Barberio E, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Browder TE, Chang MC, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Dalseno J, Dash M, Dragic J, Drutskoy A, Eidelman S, Fratina S, Gabyshev N, Garmash A, Go A, Golob B, Ha H, Haba J, Hara T, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kapusta P, Kataoka SU, Kawai H, Kawasaki T, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuzmin A, Kwon YJ, Lee MJ, Lesiak T, Liventsev D, Macnaughton J, Mandl F, Matsumoto T, McOnie S, Medvedeva T, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Moloney GR, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shwartz B, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wicht J, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yusa Y, Zhang CC, Zhang ZP, Zupanc A. Measurements of branching fractions for B --> K pi and B --> pi pi decays. PHYSICAL REVIEW LETTERS 2007; 99:121601. [PMID: 17930495 DOI: 10.1103/physrevlett.99.121601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2007] [Indexed: 05/25/2023]
Abstract
We report measurements of branching fractions for B --> K pi and B --> pi pi decays based on a data sample of 449 x 10(6) BB[over] pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We also measure the ratios of partial widths for B-->Kpi decays, namely R(c) identical with 2Gamma(B(+) --> K(+) pi(0))/Gamma(B(+) --> K(0) pi(+)) = 1.08+/-0.06+/-0.08 and R(n) identical with Gamma(B(0) --> K(+) pi(-))/2 Gamma(B(0) --> K(0) pi(0)) = 1.08+/-0.08+/-0.08, where the first and the second errors are statistical and systematic, respectively. These ratios are sensitive to enhanced electroweak penguin contributions from new physics; the new measurements are, however, consistent with standard model expectations.
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Xing J, Zhao K, Lu HB, Wang X, Liu GZ, Jin KJ, He M, Wang CC, Yang GZ. Visible-blind, ultraviolet-sensitive photodetector based on SrTiO3 single crystal. OPTICS LETTERS 2007; 32:2526-8. [PMID: 17767293 DOI: 10.1364/ol.32.002526] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
High-sensitivity and visible-blind ultraviolet (UV) photoconductive detectors based on SrTiO(3) single crystal with interdigitated electrodes are reported. The responsivities of photovoltage and photocurrent can reach 2.13x10(5) V/W and 213 mA/W, respectively, at 330 nm at ambient temperature, and the corresponding quantum efficiency eta reaches 80.2%. The dark current is lower than 50 pA at 10 V bias, and the UV/visible contrast ratio is about four orders of magnitude with a sharp cutoff at 390 nm. The experimental results demonstrate that SrTiO(3) single crystal has potentially wide applications in UV detection.
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Kusaka A, Wang CC, Ishino H, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Aulchenko V, Aushev T, Bakich AM, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Browder TE, Chang MC, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Cole S, Dalseno J, Danilov M, Dash M, Dragic J, Drutskoy A, Eidelman S, Fratina S, Fujikawa M, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Ha H, Haba J, Hara T, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kakuno H, Kang JH, Kapusta P, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lee J, Lee MJ, Lee SE, Lesiak T, Limosani A, Lin SW, Liventsev D, Mandl F, Marlow D, Matsumoto T, Miyabayashi K, Miyake H, Miyazaki Y, Mizuk R, Mori T, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park H, Park KS, Peak LS, Pestotnik R, Piilonen LE, Poluektov A, Sakai Y, Satoyama N, Schneider O, Schümann J, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Suzuki SY, Tajima O, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Villa S, Wang CH, Wang MZ, Watanabe Y, Wedd R, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Zhang LM, Zhang ZP, Zhilich V, Zupanc A. Measurement of CP asymmetry in a time-dependent Dalitz analysis of B0-->(rhopi)0 and a constraint on the quark mixing matrix angle phi2. PHYSICAL REVIEW LETTERS 2007; 98:221602. [PMID: 17677832 DOI: 10.1103/physrevlett.98.221602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2007] [Indexed: 05/16/2023]
Abstract
We present a measurement of CP asymmetry using a time-dependent Dalitz plot analysis of B0-->pi+pi-pi0 decays based on a 414 fb(-1) data sample containing 449 x 10(6) BB pairs. The data was collected on the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric energy e+ e- collider. Combining our analysis with information on charged B decay modes, we perform a full Dalitz and isospin analysis and obtain a constraint on the CKM angle phi2, 68 degrees < phi2 < 95 degrees as the 68.3% confidence interval for the phi2 solution consistent with the standard model (SM). A large SM-disfavored region also remains.
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Lin SW, Chang P, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Arinstein K, Aulchenko V, Aushev T, Aziz T, Bakich AM, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Dalseno J, Dash M, Dragic J, Eidelman S, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kang JH, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Kulasiri R, Kuo CC, Kwon YJ, Lange JS, Lee J, Lee MJ, Lee SE, Lesiak T, Limosani A, Mandl F, Matsumoto T, McOnie S, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mohapatra D, Mori T, Nakamura I, Nakano E, Nakao M, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park H, Park KS, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Senyo K, Shapkin M, Singh JB, Sokolov A, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumiyoshi T, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Usov Y, Varner G, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang CC, Zhang LM, Zhang ZP, Zhilich V, Zupanc A. Observation of B decays to two kaons. PHYSICAL REVIEW LETTERS 2007; 98:181804. [PMID: 17501563 DOI: 10.1103/physrevlett.98.181804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2006] [Revised: 03/15/2007] [Indexed: 05/15/2023]
Abstract
Using 449x10(6) BB[over ] pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider, we observe clear signals for B(+)-->K[over ](0)K(+) and B(0)-->K[over ](0)K(0) decays with 5.3sigma and 6.0sigma significance, respectively. We measure the branching fractions B(B(+)-->K[over ](0)K(+))=(1.22(-0.28-0.16)(+0.32+0.13))x10(-6) and B(B(0)-->K[over ](0)K(0))=(0.87(-0.20)(+0.25)+/-0.09)x10(-6), and partial-rate asymmetries A(CP)(B(+)-->K[over ](0)K(+))=0.13(-0.24)(+0.23)+/-0.02 and A(CP)(B(0)-->K[over ](0)K(0))=-0.58(-0.66)(+0.73)+/-0.04. From a simultaneous fit, we also obtain B(B(+)-->K(0)pi(+))=(22.8(-0.7)(+0.8)+/-1.3)x10(-6) and A(CP)(B(+)-->K(0)pi(+))=0.03+/-0.03+/-0.01. The first and second error in the branching fractions and the partial-rate asymmetries are statistical and systematic, respectively. No signal is observed for B(0)-->K(+)K(-) decays, and for this branching fraction, we set an upper limit of 4.1x10(-7) at the 90% confidence level.
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146
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Tajima O, Hayashii H, Hazumi M, Inami K, Iwasaki Y, Uehara S, Abe K, Adachi I, Aihara H, Anipko D, Aulchenko V, Bakich AM, Barberio E, Bedny I, Belous K, Bitenc U, Bizjak I, Bondar A, Bozek A, Bracko M, Browder TE, Chang MC, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi Y, Choi YK, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Ha H, Haba J, Hayasaka K, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Ikado K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Kang JH, Kataoka SU, Katayama N, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Lee J, Lee MJ, Lesiak T, Limosani A, Lin SW, Liventsev D, Majumder G, Mandl F, Matsumoto T, McOnie S, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Mueller J, Nakamura I, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park H, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shwartz B, Singh JB, Sokolov A, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumisawa K, Sumiyoshi T, Suzuki S, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uglov T, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wedd R, Wicht J, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zupanc A. Search for invisible decay of the Upsilon(1S). PHYSICAL REVIEW LETTERS 2007; 98:132001. [PMID: 17501190 DOI: 10.1103/physrevlett.98.132001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2006] [Indexed: 05/15/2023]
Abstract
We report results of a search for the invisible decay of the Upsilon(1S) via the Upsilon(3S)-->pi+ pi- Upsilon(1S) transition using a data sample of 2.9 fb-1 at the Upsilon(3S) resonance. The data were collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. No signal is found, and an upper limit for the branching fraction at the 90% confidence level is determined to be B(Upsilon(1S)-->invisible)<2.5 x 10(-3).
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147
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Chang MC, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Arinstein K, Aushev T, Bakich AM, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Fratina S, Gabyshev N, Gershon T, Go A, Gokhroo G, Ha H, Haba J, Hara T, Hayasaka K, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kang JH, Kataoka SU, Kawai H, Kawasaki T, Khan HR, Kichimi H, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee MJ, Lee SE, Lesiak T, Limosani A, Lin SW, Majumder G, Mandl F, Matsumoto T, Matyja A, McOnie S, Mitaroff W, Miyabayashi K, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nagamine T, Nakamura I, Nakano E, Nakao M, Nishida S, Nitoh O, Noguchi S, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Palka H, Park H, Park KS, Peak LS, Pestotnik R, Piilonen LE, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Seidl R, Senyo K, Shapkin M, Shibuya H, Shwartz B, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumisawa K, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Uno S, Urquijo P, Ushiroda Y, Usov Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wedd R, Won E, Xie QL, Yamaguchi A, Yamashita Y, Yamauchi M, Yusa Y, Zhang CC, Zhang LM, Zhang ZP, Zupanc A. Observation of the decay B(0)-->J/psieta. PHYSICAL REVIEW LETTERS 2007; 98:131803. [PMID: 17501188 DOI: 10.1103/physrevlett.98.131803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2007] [Indexed: 05/15/2023]
Abstract
We report the first observation of B(0)-->J/psieta decay. These results are obtained from a data sample that contains 449 x10(6) BB[over] pairs accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a signal with a significance of 8.1 sigma and obtain a branching fraction of (9.5+/-1.7(stat)+/-0.8(syst)) x 10(-6).
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148
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Han YB, Feng HL, Cheung CK, Lam PM, Wang CC, Haines CJ. Expression of a novel T-complex testis expressed 5 (Tctex5) in mouse testis, epididymis, and spermatozoa. Mol Reprod Dev 2007; 74:1132-40. [PMID: 17342733 DOI: 10.1002/mrd.20631] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Expression of T-complex testis expressed 5 (Tctex5), an orthologue of protein phosphatase-1 inhibitor-3 (PPP1R11), was enhanced in mouse testis and was also expressed in epididymis and spermatozoa. There were three transcripts of Tctex5 including one brain specific and two common transcripts dominant in mouse testis. Tctex5 protein isoforms (75, 52, 32, 25, and 14.3 kDa) were identified. Isoforms of 75 and 52 kDa were spermatogenic-specific and were found in protein fraction containing nuclei, mitochondria, and flagellum accessory, and also in protein fraction containing mainly membranes. Tctex5 was localized in nuclei of pachytene spermatocytes, round spermatocytes, cytoplasm of Sertoli cells in testis; cilia, secretion bodies and nuclei of epithelial cells and interstitium smooth muscle cells in epididymis; and head and principal piece of tail in epididymal spermatozoa. The results suggested that Tctex5 might be a specific protein phosphatase-1 inhibitor in sperm; various Tctex5 transcripts and isoforms and cellular locations imply its different roles in spermatogenesis. Nuclei-type isoforms (75 and 52 kDa) might take part in nucleus remodeling during spermatogenesis whilst membrane-type isoform (52 kDa) might be responsible for dephosphorylation of proteins during capacitation. The other isoforms might play general roles for all kinds of cell types.
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149
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Abe K, Adachi I, Aihara H, Arinstein K, Asano Y, Aulchenko V, Aushev T, Aziz T, Bakich AM, Balagura V, Barbero M, Bedny I, Bitenc U, Bizjak I, Bondar A, Bracko M, Brodzicka J, Browder TE, Chao Y, Chen A, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Golob B, Ha HC, Haba J, Hasegawa Y, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hoshi Y, Hou S, Hou WS, Hsiung YB, Iijima T, Ishikawa A, Iwasaki M, Iwasaki Y, Kapusta P, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SM, Kinoshita K, Korpar S, Krokovny P, Kuo CC, Kuzmin A, Lange JS, Leder G, Lesiak T, Limosani A, Lin SW, Liventsev D, Mandl F, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyata H, Mizuk R, Nagasaka Y, Nakano E, Nakao M, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ozaki H, Pakhlov P, Palka H, Park CW, Park H, Park KS, Peak LS, Piilonen LE, Poluektov A, Sakai Y, Sato N, Schietinger T, Schneider O, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shwartz B, Sidorov V, Somov A, Stamen R, Staric M, Sumiyoshi T, Suzuki SY, Takasaki F, Tamura N, Tanaka M, Teramoto Y, Tian XC, Trabelsi K, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Urquijo P, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Zhang CC, Zhang J, Zhang LM, Zhang ZP, Zhilich V. Observation of a charmoniumlike state produced in association with a J/psi in e+e- annihilation at sqrt[s] approximately equal to 10.6 GeV. PHYSICAL REVIEW LETTERS 2007; 98:082001. [PMID: 17359087 DOI: 10.1103/physrevlett.98.082001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2005] [Indexed: 05/14/2023]
Abstract
We report the first observation of a charmoniumlike state recoiling from the J/psi in the inclusive process e+e- -->J/psi+anything at a mass of (3.943+/-0.006+/-0.006) GeV/c{2}. We also observe the decay of this state into D*D[over ] and determine its intrinsic width to be less than 52 MeV/c{2} at the 90% C.L. These results are obtained from a 357 fb{-1} data sample collected with the Belle detector near the Upsilon(4S) resonance, at the KEKB asymmetric-energy e+e- collider.
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150
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Wang CC, Liu TY, Wey SP, Wang FI, Jan TR. Areca nut extract suppresses T-cell activation and interferon-gamma production via the induction of oxidative stress. Food Chem Toxicol 2007; 45:1410-8. [PMID: 17383064 DOI: 10.1016/j.fct.2007.02.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2006] [Revised: 01/17/2007] [Accepted: 02/03/2007] [Indexed: 11/30/2022]
Abstract
Areca quid chewing is a major risk factor associated with oral submucous fibrosis (OSF) and oral cancer. Experimental evidence indicates that immune deterioration is associated with the pathophysiology of OSF and oral cancer. In addition, reactive oxygen species (ROS) is shown to play a role in the cytotoxic and genotoxic effect induced by areca nut extracts (ANE) in oral cells. The present studies investigated the effects of ANE on T-cell reactivity and the role of ROS in ANE effects. Treatment of splenocytes with ANE induced a marked cytotoxic effect, and suppressed the production of IL-2 and IFN-gamma, whereas the production of IL-4 was unaffected. The ANE-mediated cytotoxicity, and suppression of IFN-gamma and IL-2 production were attenuated by the presence of antioxidant N-acetyl-l-cysteine (NAC). Moreover, flow cytometric analysis demonstrated an increase in cellular ROS levels in splenic T-cells treated with ANE, which was also attenuated by the presence of NAC. Concordantly, the cellular level of glutathione was diminished by ANE in splenic T-cells pretreated with NAC. Collectively, these results demonstrated that ANE markedly suppressed T-cell activation and Th1 cytokine production, which was mediated, at least in part, by the induction of oxidative stress.
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