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Chen YC, Hsu SW. Tuberculous arthritis mimic arthritis of the Sjögren's syndrome: findings from sonography, computed tomography and magnetic resonance images. Eur J Radiol 2001; 40:232-5. [PMID: 11731212 DOI: 10.1016/s0720-048x(01)00363-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A patient with a history of Sjögren's syndrome developed chronic arthritis of left ankle. It was diagnosed as arthritis of the Sjögren's syndrome initially. However, joint pain persisted despite corticosteroid therapy. Sonography disclosed a multiloculated cystic lesion with peripheral hyperechoic enhancement around left ankle and extended to Achilles tendon and subcutaneous region. Computed tomography (CT) confirmed the findings. Magnetic resonance imaging (MRI) revealed increased signal intensity of the lesion after gadonillium enhancement on T1-weighted images. These abnormalities showed inhomogenous high signal intensities on T2-weighted images. Tuberculous arthritis was diagnosed by positive synovial tuberculous culture. Sonography is a valuable tool that offers significant advantages for the initial evaluation of arthritis of the Sjögren's syndrome and help early suspicious of tuberculous arthritis, because of its cost-effectiveness, superior differentiation between the cyst and solid lesions, convenience for guiding biopsy and drainage.
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Chen YC, Chang SC, Tai HM, Hsueh PR, Luh KT. Molecular epidemiology of Candida colonizing critically ill patients in intensive care units. J Formos Med Assoc 2001; 100:791-7. [PMID: 11802517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
BACKGROUND AND PURPOSE Nosocomial Candida infections are an important cause of morbidity and mortality in critically ill patients. Although there is growing evidence that candidemia develops primarily as a consequence of endogenous colonization, hospital outbreaks of Candida infection are not uncommon. To examine the prevalence and consequence of Candida colonization in critically ill patients and to elucidate the contribution of cross-transmission to the high frequency of nosocomial fungal infection in intensive care units (ICUs), a 6-month prospective surveillance study was conducted. PATIENTS AND METHODS A total of 342 adult patients with an expected ICU stay of 48 hours or more were enrolled in the study. Surveillance cultures were taken from the rectal region, oropharynx, and urine on ICU entry and weekly thereafter. The electrophoretic karyotypes (EKs) of all isolates were characterized using pulsed-field gel electrophoresis. RESULTS A total of 873 Candida strains were isolated from 208 of the 342 patients (60.8%) during ICU stay. A comparison of the EK patterns generated from Candida strains isolated from different patients demonstrated a variability of karyotypes, and failed to identify predominant clones colonizing or infecting ICU patients. For 62 of 102 patients colonized with multiple isolates of the same Candida spp., the EK patterns of the Candida strains isolated from individual patients were identical or similar, even when isolated from different anatomical sites, and the patterns remained the same for up to 62 days. A total of 57 episodes of Candida infection occurred in 53 (25.5%) of these 208 patients. Thirty-six episodes (63.1%) of Candida infection were preceded by colonization with the same Candida spp. All infecting strains had identical or similar EK patterns to prior colonizing strains. CONCLUSIONS While Candida colonization was common in ICU patients, karyotyping did not identify cross-transmission among these patients. Further, only 25.5% of patients with Candida colonization subsequently developed Candida infection. These findings suggest that universal prophylaxis is not warranted in critically ill patients with Candida colonization.
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes De Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Plunkett R, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von Der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Charged-particle multiplicity pp collisions at square root of (s) = 1.8 TeV. PHYSICAL REVIEW LETTERS 2001; 87:211804. [PMID: 11736333 DOI: 10.1103/physrevlett.87.211804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report on a measurement of the mean charged-particle multiplicity of jets in dijet events with dijet masses in the range 80-630 GeV/c(2), produced at the Tevatron in pp collisions with square root (s) = 1.8 TeV and recorded by the Collider Detector at Fermilab. The data are fit to perturbative-QCD calculations carried out in the framework of the modified leading log approximation and the hypothesis of local parton-hadron duality. The fit yields values for two parameters in that framework: the ratio of parton multiplicities in gluon and quark jets, r identical withN(g-jet)(partons)/N(q-jet)(partons) = 1.7+/-0.3, and the ratio of the number of charged hadrons to the number of partons in a jet, K(charged)(LPHD) identical with N(charged)(hadrons)/N(partons) = 0.57+/-0.11.
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529
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Liu SP, Chen YC, Guo W, Cheng JD. [The preliminary study on change of serum enzyme level in crush syndrome rat]. FA YI XUE ZA ZHI 2001; 17:205-6. [PMID: 12533870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To study the changes of serum creatinine kinase(CK) and its cardiac-specific isoenzyme compound(CK-MB) levels in crush injury rats. METHODS Crush injury was produced in SD rats, the serum levels of CK and CK-MB were studied by automated biochemical analyzer. RESULTS The levels of plasma CK and CK-MB were much higher in crush injury rats than those of the control group. CONCLUSIONS Cardiomyocyte injury may be induced in the early stage of crush injury rats.
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Chen YC, Ho CL, Kao WY, Hwang JM, Sheu LF, Chao TY. Adult lymphoblastic lymphoma in Taiwan: an analysis of treatment results of 26 patients. Ann Hematol 2001; 80:647-52. [PMID: 11757723 DOI: 10.1007/s002770100363] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lymphoblastic lymphoma (LBL) frequently affects young adults and usually presents with a mediastinal mass as well as bone marrow involvement. Although the frequency of LBL in the Far East is higher than that of Western countries, no reports regarding treatment of this disease have as yet been reported. We herein report our treatment experience and verify the efficacy of the Stanford/Northern California Oncology Group (NCOG) protocol for this disease and recommend treatment strategies for LBL patients. We retrospectively reviewed the medical records of adult LBL patients treated in our hospital from 1986 to 1996. Twenty-seven patients were diagnosed to have LBL. These patients' ages ranged from 17 to 73 years old with a median of 23. Nineteen patients had an initial stage IV disease. Of the 23 cases in which immunological studies were performed, 20 proved to be of T cell lineage, 1 of B cell type, and the other 2 lacked both T and B markers. Three major chemotherapeutic regimens including prednisone, methotrexate, doxorubicin, cyclophosphamide, etoposide-mechlorethamine, vincristine, procarbazine, prednisone (ProMACE-MOPP), cyclophosphamide, hydroxydaunomycin, vincristine, prednisone (CHOP), and the Stanford/NCOG protocol were used to treat 3, 6, and 15 patients, respectively. Two other patients were treated with two different chemotherapeutic regimens, respectively. One patient was excluded for analysis because of initial treatment by surgery. The complete response (CR) rates with ProMACE-MOPP, CHOP, and the Stanford/NCOG regimens were 0%, 17%, 80% and median overall survival 9, 8.5, and 15 months, respectively. Five patients with stage II-III diseases achieved long-term disease-free survival of 11-36 months with the Stanford/NCOG protocol with a median follow-up of 24 months. Four patients in late stage or relapse received allogeneic bone marrow transplantation (BMT). Two of them obtained long-term disease-free survival. Two other patients in CR were treated with high-dose chemotherapy (HDCT) supported with autologous BMT and peripheral blood stem cell transplantation (PBSCT), respectively. The patient receiving HDCT with autologous PBSCT died of LBL relapse 6 months after transplantation. The other patient undergoing HDCT with autologous BMT died of fulminant hepatitis 5.5 months after transplantation. The median overall survival of all these 26 patients was 12 months. B symptoms and treatment without the Stanford/NCOG protocol were found to have significantly negative impacts on both patients' overall and progression-free survivals. Our results suggest that the Stanford/NCOG protocol may be an effective chemotherapy for adult LBL and may provide long-term remission for patients in an early stage of disease. For those patients with LBL in an advanced stage or in relapse, HDCT with allogeneic or autologous BMT is probably the treatment of choice.
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Yang CW, Chen YC, Dunn P, Chang MY, Fang JT, Huang CC. Ticlopidine-induced thrombotic thrombocytopenic purpura: two case reports treated with plasma exchange plus steroids. Ren Fail 2001; 23:851-6. [PMID: 11777325 DOI: 10.1081/jdi-100108197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Thrombotic thrombocytopenic purpura (TTP) has a high mortality rate if left untreated with plasma exchange promptly. We report two cases of ticlopidine-induced TTP, which lesser dosages of ticlopidine (200-250 mg/day) were prescribed and were treated with plasma exchange (PE) plus steroids. The first case was treated successfully, but the second case did not respond to our treatment and died of a progressive disease complicated with pneumonia. In sum, we recommend careful use of ticlopidine, regardless of the dosages prescribe and regardless of how long the drug is used. Moreover, the adverse effect of ticlopidine should be closely monitored.
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532
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Chen YC, Eisner JD, Kattar MM, Rassoulian-Barrett SL, Lafe K, Bui U, Limaye AP, Cookson BT. Polymorphic internal transcribed spacer region 1 DNA sequences identify medically important yeasts. J Clin Microbiol 2001; 39:4042-51. [PMID: 11682528 PMCID: PMC88485 DOI: 10.1128/jcm.39.11.4042-4051.2001] [Citation(s) in RCA: 180] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Species-specific polymorphisms in the noncoding internal transcribed spacer 2 (ITS2) region of the rRNA operon provide accurate identification of clinically significant yeasts. In this study, we tested the hypothesis that ITS1 noncoding regions contain diagnostically useful alleles. The length of ITS1 region PCR products amplified from 40 species (106 clinical strains, 5 reference strains, and 30 type strains) was rapidly determined with single-base precision by automated capillary electrophoresis. Polymorphisms in the PCR product length permitted 19 species to be distinguished by ITS1 alone, compared with 16 species distinguished by using only ITS2. However, combination of both ITS alleles permitted identification of 30 species (98% of clinical isolates). The remaining 10 species with PCR products of similar sizes contained unique ITS alleles distinguishable by restriction enzyme analysis. DNA sequence analysis of amplified ITS1 region DNA from 79 isolates revealed species-specific ITS1 alleles for each of the 40 pathogenic species examined. This provided identification of unusual clinical isolates, and 53 diagnostic ITS1 sequences were deposited in GenBank. Phylogenetic analyses based on ITS sequences showed a similar overall topology to 26S rRNA gene-based trees. However, different species with identical 26S sequences contained distinct ITS alleles that provided species identification with strong statistical support. Together, these data indicate that the analysis of ITS polymorphisms can reliably identify 40 species of clinically significant yeasts and that the capacity for identifying potentially new pathogenic species by using this database holds significant promise.
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Magnard JL, Yang M, Chen YC, Leary M, McCormick S. The Arabidopsis gene tardy asynchronous meiosis is required for the normal pace and synchrony of cell division during male meiosis. PLANT PHYSIOLOGY 2001; 127:1157-1166. [PMID: 11706195 DOI: 10.1104/pp.010473] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Male meiosis in higher organisms features synchronous cell divisions in a large number of cells. It is not clear how this synchrony is achieved, nor is it known whether the synchrony is linked to the regulation of cell cycle progression. Here, we describe an Arabidopsis mutant, named tardy asynchronous meiosis (tam), that exhibits a phenotype of delayed and asynchronous cell divisions during male meiosis. In Arabidopsis, two nuclear divisions occur before simultaneous cytokinesis yields a tetrad of haploid cells. In tam, cell divisions are delayed, resulting in the formation of abnormal intermediates, most frequently dyad meiotic products, or in rare cases, dyad pollen (two gametophytes within one exine wall). Temperature-shift experiments showed that the percentage of the abnormal intermediates increased at 27 degrees C. Analysis of tam and the tam/quartet1 double mutant showed that most of these abnormal intermediates could continue through the normal rounds of cell divisions and form functional pollen, though at a slower than normal pace. The asynchrony of cell division started at the G2/M transition, with cells entering metaphase at different time points, during both meiosis I and II. In addition, chromosome condensation defects and mis-segregation were sometimes observed in tam. These observations suggest that the TAM protein positively regulates cell cycle progression, perhaps by promoting the G2/M transition. We speculate that there is a signal, perhaps TAM, that couples the normal pace of cell cycle progression with the synchrony of cell division during male meiosis.
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534
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Chen BH, Chen YC. Formation of polycyclic aromatic hydrocarbons in the smoke from heated model lipids and food lipids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2001; 49:5238-5243. [PMID: 11714310 DOI: 10.1021/jf0106906] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The contents of polycyclic aromatic hydrocarbons (PAHs) in the smoke from model lipids and food lipids during heating were determined and the mechanism of PAH formation was studied. A Rancimat oil stability analyzer was used as a model system for heating model lipids and food lipids at 220 degrees C for 2 h and for adsorption of smoke. The various lipid degradation products and PAHs in the smoke were identified and quantified by a GC/MS technique. Results showed that model lipids were more susceptible to smoke formation than food lipids during heating, but the PAH levels were lower for the former than latter. Methyl linolenate produced the highest amount of PAHs, followed by methyl linoleate, methyl oleate, and methyl stearate. Also, soybean oil generated a larger amount of PAHs than canola oil or sunflower oil. Benzene-like compounds were found to be possible precursors for PAHs formation. Several PAH derivatives were also present in heated model lipids and food lipids.
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535
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Guo W, Chen YC, Liu SP, Cheng JD. [The changes of tryptase activity in anaphylactic shock guinea-pigs]. FA YI XUE ZA ZHI 2001; 17:212-3. [PMID: 12533873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To investigate the changes of the activity of tryptase of sera, lungs and bronchial tubes in the guinea-pigs which suffered from hetero-serum anaphylactic shock. METHODS Sera and tissues were collected from anaphylactic shock guinea-pigs, and the enzyme activity was tested colormetrically using special substrate, BAPNA. RESULTS The activity of tryptase of sera, lungs and bronchial tubes increased significantly in Anaphylactic guinea-pigs compared with control group. CONCLUSION The changes of tryptase activity are helpful to diagnose anaphylactic shock.
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Chen YC, Mandeville JB, Nguyen TV, Talele A, Cavagna F, Jenkins BG. Improved mapping of pharmacologically induced neuronal activation using the IRON technique with superparamagnetic blood pool agents. J Magn Reson Imaging 2001; 14:517-24. [PMID: 11747003 DOI: 10.1002/jmri.1215] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The use of functional magnetic resonance imaging (fMRI) techniques for evaluation of pharmacologic stimuli has great potential for understanding neurotransmitter dynamics for a number of brain disorders, such as drug abuse, schizophrenia, epilepsy, or neurodegeneration. Unfortunately, blood oxygenation level-dependent (BOLD) imaging at common fields strengths, such as 1.5 or 3 T, has very low sensitivity and contrast-to-noise ratios (CNRs). We demonstrate here the utility of using an intravascular superparamagnetic iron oxide contrast agent with a long plasma half-life for evaluation of hemodynamic changes related to dopaminergic stimuli using amphetamine or the cocaine analog 2beta-carbomethoxy-3beta-(4-fluorophenyl)tropane (CFT). We refer to this technique as increased relaxation with iron oxide nanoparticles (IRON). Results obtained here show that even at field strengths as high as 4.7 T, one can obtain increases in CNR by factors of 2-3 over BOLD imaging that lead to greater than an order of magnitude increase in statistical power with greatly increased sensitivity to hemodynamic changes in brain regions difficult to observe using BOLD imaging. Furthermore, use of the intravascular contrast agent allows for a meaningful physiologic parameter to be measured (relative cerebral blood volume (rCBV)), compared to conventional BOLD imaging.
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Chen YC, Shen SC, Lee WR, Hou WC, Yang LL, Lee TJ. Inhibition of nitric oxide synthase inhibitors and lipopolysaccharide induced inducible NOS and cyclooxygenase-2 gene expressions by rutin, quercetin, and quercetin pentaacetate in RAW 264.7 macrophages. J Cell Biochem 2001; 82:537-48. [PMID: 11500931 DOI: 10.1002/jcb.1184] [Citation(s) in RCA: 171] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Several natural flavonoids have been demonstrated to perform some beneficial biological activities, however, higher-effective concentrations and poor-absorptive efficacy in body of flavonoids blocked their practical applications. In the present study, we provided evidences to demonstrate that flavonoids rutin, quercetin, and its acetylated product quercetin pentaacetate were able to be used with nitric oxide synthase (NOS) inhibitors (N-nitro-L-arginine (NLA) or N-nitro-L-arginine methyl ester (L-NAME)) in treatment of lipopolysaccharide (LPS) induced nitric oxide (NO) and prostaglandin E2 (PGE2) productions, inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) gene expressions in a mouse macrophage cell line (RAW 264.7). The results showed that rutin, quercetin, and quercetin pentaacetate-inhibited LPS-induced NO production in a concentration-dependent manner without obvious cytotoxic effect on cells by MTT assay using 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide as an indicator. Decrease of NO production by flavonoids was consistent with the inhibition on LPS-induced iNOS gene expression by western blotting. However, these compounds were unable to block iNOS enzyme activity by direct and indirect measurement on iNOS enzyme activity. Quercetin pentaacetate showed the obvious inhibition on LPS-induced PGE2 production and COX-2 gene expression and the inhibition was not result of suppression on COX-2 enzyme activity. Previous study demonstrated that decrease of NO production by L-arginine analogs effectively stimulated LPS-induced iNOS gene expression, and proposed that stimulatory effects on iNOS protein by NOS inhibitors might be harmful in treating sepsis. In this study, NLA or L-NAME treatment stimulated significantly on LPS-induced iNOS (but not COX-2) protein in RAW 264.7 cells which was inhibited by these three compounds. Quercetin pentaacetate, but not quercetin and rutin, showed the strong inhibitory activity on PGE2 production and COX-2 protein expression in NLA/LPS or L-NAME/LPS co-treated RAW 264.7 cells. These results indicated that combinatorial treatment of L-arginine analogs and flavonoid derivates, such as quercetin pentaacetate, effectively inhibited LPS-induced NO and PGE2 productions, at the same time, inhibited enhanced expressions of iNOS and COX-2 genes.
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Chen YC, Lin SF, Liu CJ, Jiang DD, Yang PC, Chang SC. Risk factors for ICU mortality in critically ill patients. J Formos Med Assoc 2001; 100:656-61. [PMID: 11760370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
BACKGROUND AND PURPOSE Advances in critical care medicine have increased the chances of survival for patients with severe illness or trauma. However, such patients consume a large proportion of medical resources. This study sought risk factors for mortality that have potential to be modified among patients treated in medical or surgical intensive care units (ICUs). METHODS This 6-month prospective observational study was conducted in the medical and surgical ICUs of an 1,800-bed university hospital. All adult patients with an expected ICU stay of 48 hours or more were followed up regularly until discharge from the ICUs, or for 10 weeks during their stay in ICUs. RESULTS Of 342 patients enrolled, 77 (22.5%) died during a median follow-up period of 5 days (range, 2-70 days). Among a range of variables at the time of ICU entry or developing during stay in ICUs, 17 were associated with higher mortality rate. Multivariate analysis using a logistic regression model demonstrated that the presence of systemic inflammatory response syndrome (SIRS) at the time of ICU entry (adjusted relative risk, ARR, 2.85; 95% confidence interval, CI, 1.16-7.05), Acute Physiological and Chronic Health Evaluation (APACHE) II score on ICU Day 4 (ARR 1.12 with increment of one score; 95% CI 1.01-1.24), Therapeutic Intervention Scoring System (TISS) score on Day 4 (ARR 1.13 with increment of one score; 95% CI 1.05-1.23), parenteral nutrition (ARR 4.97, 95% CI 1.73-14.26), and nosocomial Candida infection (ARR 3.39, 95% CI 1.12-10.23) were independently associated with ICU mortality. CONCLUSIONS In addition to SIRS and the APACHE II and TISS scores, this study found that nosocomial Candida infection and parenteral nutrition were independently associated with mortality after control for admission conditions, severity of illness scores, and interventions.
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Hsu GL, Wen HS, Hsieh CH, Liu LJ, Chen YC. Traumatic glans deformity: reconstruction of distal ligamentous structure. J Urol 2001; 166:1390. [PMID: 11547086 DOI: 10.1016/s0022-5347(05)65781-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Abstract
PURPOSE To describe the roots of Chinese values, beliefs and the concept of health, and to illustrate how these ways have influenced the development of health care and nursing among Chinese in the Republic of China (ROC) and the People's Republic of China (PRC). Scope. Based on the literature and direct observation in the PRC and ROC, this is an introduction to Chinese philosophies, religion, basic beliefs, and values with a special meaning for health and nursing. Chinese philosophies and religion include Confucian principles, Taoism, theory of "Yin" and "Yang", and Buddhism. Beliefs and values include the way of education, practice of acupuncture, herbal treatments and diet therapy. How people value traditional Chinese medicine in combination with western science, and the future direction of nursing and nursing inquiry are also briefly addressed. CONCLUSION Chinese philosophies and religions strongly influence the Chinese way of living and thinking about health and health care. Nurses must combine information about culture with clinical assessment of the patient to provide cultural sensitive care. A better way may be to combine both western and Chinese values into the Chinese health care system by negotiating between the traditional values while at the same time, respecting an individual's choice. The foundation of China's philosophical and aesthetic tradition, in combination with western science is important to the future advancement of nursing research that will be beneficial to the Republics, Asia, and the world.
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Dai MS, Lee SC, Ho CL, Chen YC, Kao WY, Chao TY. Impact of open lung biopsy for undiagnosed pulmonary infiltrates in patients with hematological malignancies. Am J Hematol 2001; 68:87-90. [PMID: 11559947 DOI: 10.1002/ajh.1158] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Pulmonary complications are frequently encountered in patients with hematological malignancy. The optimal therapeutic decision including open lung biopsy (OLB) for such patients is uncertain. We herein examine the clinical impact of OLB on these patients. Seven patients with progressively diffuse pulmonary infiltrates despite aggressive medical treatment were examined. The underlying diseases, prior treatment for presumptive pneumonia, the change in therapeutic approach after operation, and clinical outcome were reviewed retrospectively. Diffuse pulmonary infiltrates were caused by infection in two patients and by noninfectious etiology such as alveolar proteinosis, idiopathic interstitial pneumonitis, leukemic involvement, and drug-induced alveolar damage in the others. Four patients who had serious underlying hematologic diseases such as myelodysplastic syndrome, acute and chronic myeloid leukemia, and T cell lymphoma died. Three patients with acute lymphoid leukemia survived. In two of these three, change of therapeutic strategies after OLB was created for the survival. OLB in patients with hematological malignancy may be useful in selected patients with a treatable hematologic disease who have treatable underlying causes of the pulmonary infiltrate.
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bailey MW, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Borras K, Bortoletto D, Boudreau J, Brandl A, van Den Brink S, Bromberg C, Brozovic M, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Convery M, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes Da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Vidal R, Vila I, Vilar R, Volobouev I, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yagil A, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Double diffraction dissociation at the Fermilab Tevatron collider. PHYSICAL REVIEW LETTERS 2001; 87:141802. [PMID: 11580642 DOI: 10.1103/physrevlett.87.141802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2001] [Indexed: 05/23/2023]
Abstract
We present results from a measurement of double diffraction dissociation in pp collisions at the Fermilab Tevatron collider. The production cross section for events with a central pseudorapidity gap of width Deltaeta(0)>3 (overlapping eta = 0) is found to be 4.43+/-0.02(stat)+/-1.18(syst) mb [ 3.42+/-0.01(stat)+/-1.09(syst) mb] at square root of (s) = 1800[630] GeV. Our results are compared with previous measurements and with predictions based on Regge theory and factorization.
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Artikov A, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bachacou H, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Brubaker E, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Cabrera S, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Dominguez A, Donati S, Done J, D'Onofrio M, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Erbacher R, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallas A, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Glenzinski D, Gold M, Goldstein J, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SB, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Kondo K, Konigsberg J, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lancaster J, Lancaster M, Lander R, Lath A, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Litvintsev DO, Lobban O, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nagaslaev V, Nahn S, Nakada H, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Oh YD, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pellett D, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Rakitine A, Ratnikov F, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Ruiz A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Sidoti A, Siegrist J, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Tecchio M, Tesarek R, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Toback D, Tollefson K, Tollestrup A, Tonelli D, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Veramendi G, Vidal R, Vila I, Vilar R, Volobouev I, von der Mey M, Vucinic D, Wagner RG, Wagner RL, Wallace NB, Wan Z, Wang C, Wang MJ, Ward B, Waschke S, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Measurement of d sigma/dM and forward-backward charge asymmetry for high-mass Drell-Yan e(+)e(-) pairs from pp macro collisions at square root of s = 1.8 TeV. PHYSICAL REVIEW LETTERS 2001; 87:131802. [PMID: 11580576 DOI: 10.1103/physrevlett.87.131802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2001] [Indexed: 05/23/2023]
Abstract
We report on a measurement of the mass dependence of the forward-backward charge asymmetry, A(FB), and production cross section d sigma/dM for e(+)e(-) pairs with mass M(ee)>40 GeV/c(2). The data sample consists of 108 pb(-1) of pp macro collisions at square root of s = 1.8 TeV taken by the Collider Detector at Fermilab during 1992-1995. The measured asymmetry and d sigma/dM are compared with the predictions of the standard model and a model with an extra Z' gauge boson.
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Affolder T, Akimoto H, Akopian A, Albrow MG, Amaral P, Amendolia SR, Amidei D, Anikeev K, Antos J, Apollinari G, Arisawa T, Asakawa T, Ashmanskas W, Azfar F, Azzi-Bacchetta P, Bacchetta N, Bailey MW, Bailey S, de Barbaro P, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Barone M, Bauer G, Bedeschi F, Belforte S, Bell WH, Bellettini G, Bellinger J, Benjamin D, Bensinger J, Beretvas A, Berge JP, Berryhill J, Bevensee B, Bhatti A, Binkley M, Bisello D, Bishai M, Blair RE, Blocker C, Bloom K, Blumenfeld B, Blusk SR, Bocci A, Bodek A, Bokhari W, Bolla G, Bonushkin Y, Bortoletto D, Boudreau J, Brandl A, van den Brink S, Bromberg C, Brozovic M, Bruner N, Buckley-Geer E, Budagov J, Budd HS, Burkett K, Busetto G, Byon-Wagner A, Byrum KL, Calafiura P, Campbell M, Carithers W, Carlson J, Carlsmith D, Caskey W, Cassada J, Castro A, Cauz D, Cerri A, Chan AW, Chang PS, Chang PT, Chapman J, Chen C, Chen YC, Cheng MT, Chertok M, Chiarelli G, Chirikov-Zorin I, Chlachidze G, Chlebana F, Christofek L, Chu ML, Chung YS, Ciobanu CI, Clark AG, Connolly A, Conway J, Cordelli M, Cranshaw J, Cronin-Hennessy D, Cropp R, Culbertson R, Dagenhart D, D'Auria S, DeJongh F, Dell'Agnello S, Dell'Orso M, Demortier L, Deninno M, Derwent PF, Devlin T, Dittmann JR, Donati S, Done J, Dorigo T, Eddy N, Einsweiler K, Elias JE, Engels E, Errede D, Errede S, Fan Q, Feild RG, Fernandez JP, Ferretti C, Field RD, Fiori I, Flaugher B, Foster GW, Franklin M, Freeman J, Friedman J, Fukui Y, Furic I, Galeotti S, Gallinaro M, Gao T, Garcia-Sciveres M, Garfinkel AF, Gatti P, Gay C, Gerdes DW, Giannetti P, Giromini P, Glagolev V, Gold M, Goldstein J, Gordon A, Gorelov I, Goshaw AT, Gotra Y, Goulianos K, Green C, Grim G, Gris P, Groer L, Grosso-Pilcher C, Guenther M, Guillian G, Guimaraes da Costa J, Haas RM, Haber C, Hafen E, Hahn SR, Hall C, Handa T, Handler R, Hao W, Happacher F, Hara K, Hardman AD, Harris RM, Hartmann F, Hatakeyama K, Hauser J, Heinrich J, Heiss A, Herndon M, Hill C, Hoffman KD, Holck C, Hollebeek R, Holloway L, Hughes R, Huston J, Huth J, Ikeda H, Incandela J, Introzzi G, Iwai J, Iwata Y, James E, Jensen H, Jones M, Joshi U, Kambara H, Kamon T, Kaneko T, Karr K, Kasha H, Kato Y, Keaffaber TA, Kelley K, Kelly M, Kennedy RD, Kephart R, Khazins D, Kikuchi T, Kilminster B, Kim BJ, Kim DH, Kim HS, Kim MJ, Kim SH, Kim YK, Kirby M, Kirk M, Kirsch L, Klimenko S, Koehn P, Köngeter A, Kondo K, Konigsberg J, Kordas K, Korn A, Korytov A, Kovacs E, Kroll J, Kruse M, Kuhlmann SE, Kurino K, Kuwabara T, Laasanen AT, Lai N, Lami S, Lammel S, Lamoureux JI, Lancaster J, Lancaster M, Lander R, Latino G, LeCompte T, Lee AM, Lee K, Leone S, Lewis JD, Lindgren M, Liss TM, Liu JB, Liu YC, Lockyer N, Loken J, Loreti M, Lucchesi D, Lukens P, Lusin S, Lyons L, Lys J, Madrak R, Maeshima K, Maksimovic P, Malferrari L, Mangano M, Mariotti M, Martignon G, Martin A, Matthews JA, Mayer J, Mazzanti P, McFarland KS, McIntyre P, McKigney E, Menguzzato M, Menzione A, Mesropian C, Meyer A, Miao T, Miller R, Miller JS, Minato H, Miscetti S, Mishina M, Mitselmakher G, Moggi N, Moore E, Moore R, Morita Y, Moulik T, Mulhearn M, Mukherjee A, Muller T, Munar A, Murat P, Murgia S, Nachtman J, Nahn S, Nakada H, Nakaya T, Nakano I, Nelson C, Nelson T, Neu C, Neuberger D, Newman-Holmes C, Ngan CY, Niu H, Nodulman L, Nomerotski A, Oh SH, Ohmoto T, Ohsugi T, Oishi R, Okusawa T, Olsen J, Orejudos W, Pagliarone C, Palmonari F, Paoletti R, Papadimitriou V, Pappas SP, Partos D, Patrick J, Pauletta G, Paulini M, Paus C, Pescara L, Phillips TJ, Piacentino G, Pitts KT, Pompos A, Pondrom L, Pope G, Popovic M, Prokoshin F, Proudfoot J, Ptohos F, Pukhov O, Punzi G, Ragan K, Rakitine A, Reher D, Reichold A, Ribon A, Riegler W, Rimondi F, Ristori L, Riveline M, Robertson WJ, Robinson A, Rodrigo T, Rolli S, Rosenson L, Roser R, Rossin R, Roy A, Safonov A, St Denis R, Sakumoto WK, Saltzberg D, Sanchez C, Sansoni A, Santi L, Sato H, Savard P, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Scodellaro L, Scott A, Scribano A, Segler S, Seidel S, Seiya Y, Semenov A, Semeria F, Shah T, Shapiro MD, Shepard PF, Shibayama T, Shimojima M, Shochet M, Siegrist J, Signorelli G, Sill A, Sinervo P, Singh P, Slaughter AJ, Sliwa K, Smith C, Snider FD, Solodsky A, Spalding J, Speer T, Sphicas P, Spinella F, Spiropulu M, Spiegel L, Steele J, Stefanini A, Strologas J, Strumia F, Stuart D, Sumorok K, Suzuki T, Takano T, Takashima R, Takikawa K, Tamburello P, Tanaka M, Tannenbaum B, Taylor W, Tecchio M, Teng PK, Terashi K, Tether S, Thompson AS, Thurman-Keup R, Tipton P, Tkaczyk S, Tollefson K, Tollestrup A, Toyoda H, Trischuk W, de Troconiz JF, Tseng J, Turini N, Ukegawa F, Vaiciulis T, Valls J, Vejcik S, Velev G, Vidal R, Vilar R, Volobouev I, Vucinic D, Wagner RG, Wagner RL, Wahl J, Wallace NB, Walsh AM, Wang C, Wang MJ, Watanabe T, Waters D, Watts T, Webb R, Wenzel H, Wester WC, Wicklund AB, Wicklund E, Wilkes T, Williams HH, Wilson P, Winer BL, Winn D, Wolbers S, Wolinski D, Wolinski J, Wolinski S, Worm S, Wu X, Wyss J, Yagil A, Yao W, Yeh GP, Yeh P, Yoh J, Yosef C, Yoshida T, Yu I, Yu S, Yu Z, Zanetti A, Zetti F, Zucchelli S. Measurement of the top quark p(T) distribution. PHYSICAL REVIEW LETTERS 2001; 87:102001. [PMID: 11531473 DOI: 10.1103/physrevlett.87.102001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2000] [Indexed: 05/23/2023]
Abstract
We have measured the p(T) distribution of top quarks that are pair produced in pp collisions at sqrt[s] = 1.8 TeV using a sample of tt decays in which we observe a single high- p(T) charged lepton, a neutrino, and four or more jets. We use a likelihood technique that corrects for the experimental bias introduced due to event reconstruction and detector resolution effects. The observed distribution is consistent with the standard model prediction. We use these data to place limits on the production of high- p(T) top quarks suggested in some models of anomalous top quark pair production.
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Fang CT, Chang SC, Chen YC, Hsieh SM, Hsieh WC. In vitro activity of linezolid against clinical Gram-positive bacterial isolates from Taiwan: an area with a high prevalence of antibiotic resistance. Int J Antimicrob Agents 2001; 18:267-70. [PMID: 11673041 DOI: 10.1016/s0924-8579(01)00384-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The prevalence of antibiotic-resistant bacteria in Taiwan is due to the heavy use of antimicrobial agents in both animal husbandry and clinical practice over the past decades. Minimum inhibitory concentrations (MICs) of linezolid were established for 371 clinical isolates of staphylococci, pneumococci, enterococci and group A streptococci from Taiwan. All isolates tested including those resistant to beta-lactams, erythromycin, vancomycin and quinupristin-dalfopristin were uniformly susceptible to linezolid, with MICs ranging from 0.125 to 2 mg/l. Our data support the observation that there is no cross-resistance between linezolid and other classes of antimicrobial substances.
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Ko BS, Tang JL, Tsai W, Chen YC, Wang CH, Sheng MC, Lin DT, Lin KH, Tien HF. Philadelphia chromosome-positive acute lymphoblastic leukemia in Taiwan. Ann Hematol 2001; 80:510-5. [PMID: 11669298 DOI: 10.1007/s002770100338] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
From January 1986 to December 1998, 26 (23%) of 114 acute lymphoblastic leukemia (ALL) patients older than 15 years were found to have Philadelphia (Ph) chromosome. They accounted for 28% (26 of 94) of the patients with B-lineage ALL. Compared with the other 88 ALL patients, the leukemic cells from all but one Ph-positive ALL patients were early pre-B cells with a higher rate of CD34 expression (92% vs 50%, P<0.05). At presentation, the Ph-positive adult ALL patients had higher circulating blasts (mean 21.4 vs 3.66x10(4)/microl, P<0.05) and lower initial platelet counts (mean 4.47 vs 7.34x10(4)/microl, P<0.01) and showed a trend toward higher frequency of initial central nerve system (CNS) involvement (25% vs 11%, P=0.098) than the others. Among patients with adequate chemotherapy, 16 (64%) of the 25 Ph-positive ALL patients achieved complete remission (CR), an incidence marginally lower than that of Ph-negative ALL (62 of 76, 82%, P=0.06) and significantly lower than that of Ph-negative B-lineage ALL (50 of 58, 86%, P=0.0037). However, all patients relapsed except for those who received allogeneic hemopoietic stem cell transplantation (allo-HSCT). The probabilities of 5-year continuous CR and 5-year survival for Ph-positive adult ALL patients were significantly inferior to those for Ph-negative adult ALL patients (0% vs 12%, P=0.0001, and 7% vs 19%, P=0.047, respectively), and those for Ph-negative B-lineage ALL (0% vs 14%, P<0.0001, and 7% vs 23%, P=0.002, respectively). Prognostic factors were analyzed among the Ph-positive ALL patients including the 26 adults mentioned above and an additional 11 children. No clinical or biological characteristics such as age, sex, initial circulating blast count, extramedullary involvement, or CD34 expression had an impact on the disease outcome. Allo-HSCT in first CR may improve the probability of 5-year continuous CR (100% vs. 0% for those without allo-HSCT, P=0.0091) although only three patients received it in this study. In conclusion, Ph-positive ALL patients tended to have a poor prognosis, regardless of whether other possible risk factors were present or not. Aggressive treatment, such as high-dose chemotherapy with allo-HSCT, should be considered for these patients to improve survival.
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547
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Hsueh PR, Teng LJ, Hsu JH, Liaw YS, Chen YC, Pan YS, Pan HJ, Yang PC, Ho SW, Luh KT. Nosocomial Exophiala jeanselmei pseudoinfection after sonography-guided aspiration of thoracic lesions. J Formos Med Assoc 2001; 100:613-9. [PMID: 11695277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND AND PURPOSE During the period from August 1994 to October 1998, a total of 19 isolates of Exophiala jeanselmei were recovered from 17 patients with various underlying thoracic diseases treated at National Taiwan University Hospital. The purpose of this study was to describe the clinical characteristics of these patients and to determine the microbiologic relatedness of the E. jeanselmei. METHODS Of the 19 isolates, 11 from nine patients were preserved and were identified based on their biotypes as determined by the API ID32C System, their cellular fatty acid profiles by gas-liquid chromatography, their antibiotypes to five antifungal agents by the E-test, and their random amplified polymorphic DNA (RAPD) patterns by arbitrarily primed PCR. Extensive environmental surveillance cultures and cultures from the skin of eight patients and hands of one physician were also performed. RESULTS One of the 17 patients had E. jeanselmei isolated from cutaneous phaeohyphomycosis (3 isolates), and the other 16 patients had isolations from pleural effusion specimens (15 isolates) or lung mass (1 isolate) following sonography-guided aspiration. The latter 16 patients had no clinical or pathologic evidence of fungal infection. Isolates (clone 1) from aspirated specimens had identical biotypes, antibiotypes, and RAPD patterns, which were different from those of the three isolates (clone 2) from the patient with a cutaneous lesion. All specimens from environmental sources, patients' skin, and the hands of the physician were negative for E. jeanselmei. CONCLUSION This series of patients demonstrates the difficulty in identifying the sources of a nosocomial pseudoinfection due to this slow-growing microorganism when isolated from pleural effusion specimens.
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548
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Hsu HH, Lin CL, Chen YC, Fang JT, Huang CC. An enormous abdominal mass associated with acute renal failure. Ren Fail 2001; 23:721-5. [PMID: 11725919 DOI: 10.1081/jdi-100107369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
We report a 67-year-old man with acute uric acid nephropathy, secondary to spontaneous tumor lysis syndrome, that presented itself as a huge intra-abdominal tumor that led to acute renal failure, hyperuricemia, and azotemia. Initial finding of hydronephrosis detected by ultrasonography led us to believe that the azotemia and decreasing amount of urine resulted from obstructive uropathy, a common complication of malignancy, caused by either a direct renal invasion or a urinary outflow tract compression because of a tumor mass effect. However, clinical observations and the response to therapeutic intervention confirmed the diagnosis of spontaneous tumor lysis syndrome, which is a rare cause of acute uric acid nephropathy.
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549
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Fang JT, Chen YC, Hsueh S. Lymphatic tumor emboli of perirenal fat in patient with nephrotic syndrome receiving renal biopsy, ultimately revealed gastric adenocarcinoma with membranous glomerulonephritis. Ren Fail 2001; 23:743-8. [PMID: 11725923 DOI: 10.1081/jdi-100107373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
The association of malignancy with nephrotic syndrome and renal histopathologic abnormalities is well documented. Paraneoplastic proteinuria caused by membranous glomerulonephritis usually is made simultaneously with the diagnosis of a malignant tumor, or the two conditions are diagnosed within a year of each other. We reported a patient who presented with nephrotic syndrome initially. Incidentally, in kidney specimens, pathologic findings showed perirenal fatty tissue with malignancy tumor emboli in lymphatics. Thereafter, gastric adenocarcinoma was diagnosed by gastrointestinal panendoscopy with gastric biopsy under impression of malignancy associated with glomerulonephritis. Patient died of complications of malignancy-related disseminated intravascular coagulation without chemotherapy after confirming diagnosis was made three months later.
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550
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Sheng WH, Wang JT, Chen YC, Chang SC, Luh KT. In vitro activity of moxifloxacin against common clinical bacterial isolates in Taiwan. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2001; 34:178-84. [PMID: 11605808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
The in vitro antimicrobial activities of moxifloxacin were compared with 7 other antimicrobial agents. A total of 707 isolates of 11 common pathogenic bacteria were collected from the National Taiwan University Hospital; antimicrobial activities against these isolates were evaluated by minimum inhibitory concentration using an agar-dilution method. Most common pathogenic bacteria were susceptible to moxifloxacin, including methicillin-susceptible and -resistant Staphylococcus aureus, methicillin-susceptible and -resistant Staphylococcus epidermidis, Streptococcus pneumoniae, Enterococcus faecalis, Escherichia coli, Klebsiella pneumoniae, Enterobacter cloacae, Pseudomonas aeruginosa, Burkholderia cepacia, Acinetobacter baumannii, and Stenotrophomonas maltophilia. For many of these bacterial species, moxifloxacin was the most active antimicrobial agent compared with the third- and fourth- generation cephalosporins, carbapenems, monobactam, and other quinolones. Some strains of methicillin-resistant S. aureus and methicillin-resistant S. epidermidis demonstrated very low levels of minimum inhibitory concentration for moxifloxacin, suggesting the potential application of the drug to treat some drug-resistant gram-positive bacterial infections. Moxifloxacin was less active against P. aeruginosa, but was more active against S. maltophilia when compared with other fluoroquinolones. In conclusion, moxifloxacin exhibits an increased potency against gram-positive bacteria as compared with other tested antimicrobial agents, while preserving excellent activity against gram-negative bacteria. The drug appears to be a promising agent expressing activity against a wide variety of bacteria in Taiwan.
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