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Yang Y, Lu N, Zhou J, Chen ZN, Zhu P. Cyclophilin A up-regulates MMP-9 expression and adhesion of monocytes/macrophages via CD147 signalling pathway in rheumatoid arthritis. Rheumatology (Oxford) 2008; 47:1299-310. [PMID: 18567920 PMCID: PMC7107241 DOI: 10.1093/rheumatology/ken225] [Citation(s) in RCA: 125] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Objectives. To investigate whether cyclophilin A (CypA) can up-regulate the expression of MMP-2 and MMP-9 in monocytes/macrophages and whether CD147 facilitates this regulation in RA. Methods. Peripheral blood monocytes were isolated from RA patients and differentiated into macrophages by M-CSF (15 ng/ml). Under CypA stimulation (200 ng/ml), the protein release and activation of MMPs were detected by gelatin zymography and invasion assay. Human monocyte cell line THP-1 cells were selected for the advanced searching for potential interaction between CypA and CD147 in production of MMPs and cell adhesion to extracellular matrix (ECM). Results. CypA significantly increased production and activation of MMP-9, not MMP-2, in the monocytes/macrophages derived from RA SF. CSA and HAb18G/CD147 antagonistic peptide AP-9 against CD147, respectively, dramatically decreased MMP-2 and MMP-9 expression, both in the absence or presence of CypA. Similar effects of CypA on MMP-9 production and cell invasion were observed in THP-1 cells. CypA-induced nuclear factor κB (NF-κB) activity for MMP-9 transcription were strongly blocked by extracellular signal-regulated kinase (ERK), c-Jun amino terminal kinase (JNK) inhibitors (U0126 and SP600125, respectively), but not by p38 mitogen-activated protein kinase (MAPK) inhibitors (SB203580). CypA also induced calcium mobilization and increased the adhesion of THP-1 cells to ECM. Conclusions. These findings suggest that in RA, the abundant CypA, by its direct binding to CD147, up-regulates MMP-9 expression and adhesion of monocytes/macrophages to ECM, and the cyclophilin-CD147 interactions might contribute to the destruction of cartilage and bone.
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Abelev BI, Aggarwal MM, Ahammed Z, Anderson BD, Arkhipkin D, Averichev GS, Bai Y, Balewski J, Barannikova O, Barnby LS, Baudot J, Baumgart S, Belaga VV, Bellingeri-Laurikainen A, Bellwied R, Benedosso F, Betts RR, Bhardwaj S, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Blyth SL, Bombara M, Bonner BE, Botje M, Bouchet J, Brandin AV, Burton TP, Bystersky M, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Callner J, Catu O, Cebra D, Cervantes MC, Chajecki Z, Chaloupka P, Chattopadhyay S, Chen HF, Chen JH, Chen JY, Cheng J, Cherney M, Chikanian A, Christie W, Chung SU, Clarke RF, Codrington MJM, Coffin JP, Cormier TM, Cosentino MR, Cramer JG, Crawford HJ, Das D, Dash S, Daugherity M, de Moura MM, Dedovich TG, Dephillips M, Derevschikov AA, Didenko L, Dietel T, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Du F, Dunin VB, Dunlop JC, Dutta Mazumdar MR, Edwards WR, Efimov LG, Elhalhuli E, Emelianov V, Engelage J, Eppley G, Erazmus B, Estienne M, Fachini P, Fatemi R, Fedorisin J, Feng A, Filip P, Finch E, Fine V, Fisyak Y, Fu J, Gagliardi CA, Gaillard L, Ganti MS, Garcia-Solis E, Ghazikhanian V, Ghosh P, Gorbunov YN, Gos H, Grebenyuk O, Grosnick D, Grube B, Guertin SM, Guimaraes KSFF, Gupta A, Gupta N, Haag B, Hallman TJ, Hamed A, Harris JW, He W, Heinz M, Henry TW, Heppelmann S, Hippolyte B, Hirsch A, Hjort E, Hoffman AM, Hoffmann GW, Hofman DJ, Hollis RS, Horner MJ, Huang HZ, Hughes EW, Humanic TJ, Igo G, Iordanova A, Jacobs P, Jacobs WW, Jakl P, Jones PG, Judd EG, Kabana S, Kang K, Kapitan J, Kaplan M, Keane D, Kechechyan A, Kettler D, Khodyrev VY, Kiryluk J, Kisiel A, Kislov EM, Klein SR, Knospe AG, Kocoloski A, Koetke DD, Kollegger T, Kopytine M, Kotchenda L, Kouchpil V, Kowalik KL, Kravtsov P, Kravtsov VI, Krueger K, Kuhn C, Kulikov AI, Kumar A, Kurnadi P, Kuznetsov AA, Lamont MAC, Landgraf JM, Lange S, Lapointe S, Laue F, Lauret J, Lebedev A, Lednicky R, Lee CH, Lehocka S, Levine MJ, Li C, Li Q, Li Y, Lin G, Lin X, Lindenbaum SJ, Lisa MA, Liu F, Liu H, Liu J, Liu L, Ljubicic T, Llope WJ, Longacre RS, Love WA, Lu Y, Ludlam T, Lynn D, Ma GL, Ma JG, Ma YG, Mahapatra DP, Majka R, Mangotra LK, Manweiler R, Margetis S, Markert C, Martin L, Matis HS, Matulenko YA, McShane TS, Meschanin A, Millane J, Miller ML, Minaev NG, Mioduszewski S, Mischke A, Mitchell J, Mohanty B, Morozov DA, Munhoz MG, Nandi BK, Nattrass C, Nayak TK, Nelson JM, Nepali C, Netrakanti PK, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Okorokov V, Olson D, Pachr M, Pal SK, Panebratsev Y, Pavlinov AI, Pawlak T, Peitzmann T, Perevoztchikov V, Perkins C, Peryt W, Phatak SC, Planinic M, Pluta J, Poljak N, Porile N, Poskanzer AM, Potekhin M, Potrebenikova E, Potukuchi BVKS, Prindle D, Pruneau C, Pruthi NK, Putschke J, Qattan IA, Raniwala R, Raniwala S, Ray RL, Relyea D, Ridiger A, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Rose A, Roy C, Ruan L, Russcher MJ, Sahoo R, Sakrejda I, Sakuma T, Salur S, Sandweiss J, Sarsour M, Sazhin PS, Schambach J, Scharenberg RP, Schmitz N, Seger J, Selyuzhenkov I, Seyboth P, Shabetai A, Shahaliev E, Shao M, Sharma M, Shen WQ, Shimanskiy SS, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Snellings R, Sorensen P, Sowinski J, Speltz J, Spinka HM, Srivastava B, Stadnik A, Stanislaus TDS, Staszak D, Stock R, Strikhanov M, Stringfellow B, Suaide AAP, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Z, Surrow B, Symons TJM, Szanto de Toledo A, Takahashi J, Tang AH, Tarnowsky T, Thomas JH, Timmins AR, Timoshenko S, Tokarev M, Trainor TA, Tram VN, Trentalange S, Tribble RE, Tsai OD, Ulery J, Ullrich T, Underwood DG, Van Buren G, van der Kolk N, van Leeuwen M, Vander Molen AM, Varma R, Vasilevski IM, Vasiliev AN, Vernet R, Vigdor SE, Viyogi YP, Vokal S, Voloshin SA, Wada M, Waggoner WT, Wang F, Wang G, Wang JS, Wang XL, Wang Y, Webb JC, Westfall GD, Whitten C, Wieman H, Wissink SW, Witt R, Wu J, Wu Y, Xu N, Xu QH, Xu Z, Yepes P, Yoo IK, Yue Q, Yurevich VI, Zawisza M, Zhan W, Zhang H, Zhang WM, Zhang Y, Zhang ZP, Zhao Y, Zhong C, Zhou J, Zoulkarneev R, Zoulkarneeva Y, Zubarev AN, Zuo JX. Longitudinal double-spin asymmetry for inclusive jet production in p[over -->] + p[over -->] collisions at sqrt[s]=200 GeV. PHYSICAL REVIEW LETTERS 2008; 100:232003. [PMID: 18643488 DOI: 10.1103/physrevlett.100.232003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2007] [Indexed: 05/26/2023]
Abstract
We report a new STAR measurement of the longitudinal double-spin asymmetry A(LL) for inclusive jet production at midrapidity in polarized p + p collisions at a center-of-mass energy of sqrt[s]=200 GeV. The data, which cover jet transverse momenta 5<p(T)<30 GeV/c, are substantially more precise than previous measurements. They provide significant new constraints on the gluon spin contribution to the nucleon spin through the comparison to predictions derived from one global fit to polarized deep-inelastic scattering measurements.
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Liu T, Li X, Zhou J, Vance W, Benson M, Schiff P, Kutcher G. SU-GG-J-05: A Comparative Analysis of in Vivo and Ex Vivo Prostate Volumes Using CT and Ultrasound Imaging. Med Phys 2008. [DOI: 10.1118/1.2961562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Zhou J, Young M, Uhl B, Dewitt K, Lo Y, Fei D. SU-GG-J-30: Analysis of Daily Setup Variation with Tomotherapy Megavoltage Computed Tomography (MVCT). Med Phys 2008. [DOI: 10.1118/1.2961587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Zhou J, Zhang P, Woodhouse S, Schiff P, Ballas L, Kutcher G, Liu T. TH-D-AUD C-02: Reliability Study of Ultrasound Tissue Characterization in Quantitative Measurement of Radiation-Induced Breast Tissue Toxicity. Med Phys 2008. [DOI: 10.1118/1.2962914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Aaltonen T, Abulencia A, Adelman J, Affolder T, Akimoto T, Albrow MG, Amerio S, Amidei D, Anastassov A, Anikeev K, Annovi A, Antos J, Aoki M, Apollinari G, Arisawa T, Artikov A, Ashmanskas W, Attal A, Aurisano A, Azfar F, Azzi-Bacchetta P, Azzurri P, Bacchetta N, Badgett W, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Bartsch V, Bauer G, Beauchemin PH, Bedeschi F, Behari S, Bellettini G, Bellinger J, Belloni A, Benjamin D, Beretvas A, Beringer J, Berry T, Bhatti A, Binkley M, Bisello D, Bizjak I, Blair RE, Blocker C, Blumenfeld B, Bocci A, Bodek A, Boisvert V, Bolla G, Bolshov A, Bortoletto D, Boudreau J, Boveia A, Brau B, Brigliadori L, Bromberg C, Brubaker E, Budagov J, Budd HS, Budd S, Burkett K, Busetto G, Bussey P, Buzatu A, Byrum KL, Cabrera S, Campanelli M, Campbell M, Canelli F, Canepa A, Carrillo S, Carlsmith D, Carosi R, Carron S, Casal B, Casarsa M, Castro A, Catastini P, Cauz D, Cavalli-Sforza M, Cerri A, Cerrito L, Chang SH, Chen YC, Chertok M, Chiarelli G, Chlachidze G, Chlebana F, Cho I, Cho K, Chokheli D, Chou JP, Choudalakis G, Chuang SH, Chung K, Chung WH, Chung YS, Cilijak M, Ciobanu CI, Ciocci MA, Clark A, Clark D, Coca M, Compostella G, Convery ME, Conway J, Cooper B, Copic K, Cordelli M, Cortiana G, Crescioli F, Cuenca Almenar C, Cuevas J, Culbertson R, Cully JC, DaRonco S, Datta M, D’Auria S, Davies T, Dagenhart D, de Barbaro P, De Cecco S, Deisher A, De Lentdecker G, De Lorenzo G, Dell’Orso M, Delli Paoli F, Demortier L, Deng J, Deninno M, De Pedis D, Derwent PF, Di Giovanni GP, Dionisi C, Di Ruzza B, Dittmann JR, D’Onofrio M, Dörr C, Donati S, Dong P, Donini J, Dorigo T, Dube S, Efron J, Erbacher R, Errede D, Errede S, Eusebi R, Fang HC, Farrington S, Fedorko I, Fedorko WT, Feild RG, Feindt M, Fernandez JP, Field R, Flanagan G, Forrest R, Forrester S, Franklin M, Freeman JC, Furic I, Gallinaro M, Galyardt J, Garcia JE, Garberson F, Garfinkel AF, Gay C, Gerberich H, Gerdes D, Giagu S, Giannetti P, Gibson K, Gimmell JL, Ginsburg C, Giokaris N, Giordani M, Giromini P, Giunta M, Giurgiu G, Glagolev V, Glenzinski D, Gold M, Goldschmidt N, Goldstein J, Golossanov A, Gomez G, Gomez-Ceballos G, Goncharov M, González O, Gorelov I, Goshaw AT, Goulianos K, Gresele A, Grinstein S, Grosso-Pilcher C, Group RC, Grundler U, Guimaraes da Costa J, Gunay-Unalan Z, Haber C, Hahn K, Hahn SR, Halkiadakis E, Hamilton A, Han BY, Han JY, Handler R, Happacher F, Hara K, Hare D, Hare M, Harper S, Harr RF, Harris RM, Hartz M, Hatakeyama K, Hauser J, Hays C, Heck M, Heijboer A, Heinemann B, Heinrich J, Henderson C, Herndon M, Heuser J, Hidas D, Hill CS, Hirschbuehl D, Hocker A, Holloway A, Hou S, Houlden M, Hsu SC, Huffman BT, Hughes RE, Husemann U, Huston J, Incandela J, Introzzi G, Iori M, Ivanov A, Iyutin B, James E, Jang D, Jayatilaka B, Jeans D, Jeon EJ, Jindariani S, Johnson W, Jones M, Joo KK, Jun SY, Jung JE, Junk TR, Kamon T, Karchin PE, Kato Y, Kemp Y, Kephart R, Kerzel U, Khotilovich V, Kilminster B, Kim DH, Kim HS, Kim JE, Kim MJ, Kim SB, Kim SH, Kim YK, Kimura N, Kirsch L, Klimenko S, Klute M, Knuteson B, Ko BR, Kondo K, Kong DJ, Konigsberg J, Korytov A, Kotwal AV, Kraan AC, Kraus J, Kreps M, Kroll J, Krumnack N, Kruse M, Krutelyov V, Kubo T, Kuhlmann SE, Kuhr T, Kulkarni NP, Kusakabe Y, Kwang S, Laasanen AT, Lai S, Lami S, Lammel S, Lancaster M, Lander RL, Lannon K, Lath A, Latino G, Lazzizzera I, LeCompte T, Lee J, Lee J, Lee YJ, Lee SW, Lefèvre R, Leonardo N, Leone S, Levy S, Lewis JD, Lin C, Lin CS, Lindgren M, Lipeles E, Lister A, Litvintsev DO, Liu T, Lockyer NS, Loginov A, Loreti M, Lu RS, Lucchesi D, Lujan P, Lukens P, Lungu G, Lyons L, Lys J, Lysak R, Lytken E, Mack P, MacQueen D, Madrak R, Maeshima K, Makhoul K, Maki T, Maksimovic P, Malde S, Malik S, Manca G, Manousakis A, Margaroli F, Marginean R, Marino C, Marino CP, Martin A, Martin M, Martin V, Martínez M, Martínez-Ballarín R, Maruyama T, Mastrandrea P, Masubuchi T, Matsunaga H, Mattson ME, Mazini R, Mazzanti P, McFarland KS, McIntyre P, McNulty R, Mehta A, Mehtala P, Menzemer S, Menzione A, Merkel P, Mesropian C, Messina A, Miao T, Miladinovic N, Miles J, Miller R, Mills C, Milnik M, Mitra A, Mitselmakher G, Miyamoto A, Moed S, Moggi N, Mohr B, Moon CS, Moore R, Morello M, Movilla Fernandez P, Mülmenstädt J, Mukherjee A, Muller T, Mumford R, Murat P, Mussini M, Nachtman J, Nagano A, Naganoma J, Nakamura K, Nakano I, Napier A, Necula V, Neu C, Neubauer MS, Nielsen J, Nodulman L, Norniella O, Nurse E, Oh SH, Oh YD, Oksuzian I, Okusawa T, Oldeman R, Orava R, Osterberg K, Pagliarone C, Palencia E, Papadimitriou V, Papaikonomou A, Paramonov AA, Parks B, Pashapour S, Patrick J, Pauletta G, Paulini M, Paus C, Pellett DE, Penzo A, Phillips TJ, Piacentino G, Piedra J, Pinera L, Pitts K, Plager C, Pondrom L, Portell X, Poukhov O, Pounder N, Prakoshyn F, Pronko A, Proudfoot J, Ptohos F, Punzi G, Pursley J, Rademacker J, Rahaman A, Ramakrishnan V, Ranjan N, Redondo I, Reisert B, Rekovic V, Renton P, Rescigno M, Richter S, Rimondi F, Ristori L, Robson A, Rodrigo T, Rogers E, Rolli S, Roser R, Rossi M, Rossin R, Roy P, Ruiz A, Russ J, Rusu V, Saarikko H, Safonov A, Sakumoto WK, Salamanna G, Saltó O, Santi L, Sarkar S, Sartori L, Sato K, Savard P, Savoy-Navarro A, Scheidle T, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Schwarz T, Scodellaro L, Scott AL, Scribano A, Scuri F, Sedov A, Seidel S, Seiya Y, Semenov A, Sexton-Kennedy L, Sfyrla A, Shalhout SZ, Shapiro MD, Shears T, Shepard PF, Sherman D, Shimojima M, Shochet M, Shon Y, Shreyber I, Sidoti A, Sinervo P, Sisakyan A, Slaughter AJ, Slaunwhite J, Sliwa K, Smith JR, Snider FD, Snihur R, Soderberg M, Soha A, Somalwar S, Sorin V, Spalding J, Spinella F, Spreitzer T, Squillacioti P, Stanitzki M, Staveris-Polykalas A, St. Denis R, Stelzer B, Stelzer-Chilton O, Stentz D, Strologas J, Stuart D, Suh JS, Sukhanov A, Sun H, Suslov I, Suzuki T, Taffard A, Takashima R, Takeuchi Y, Tanaka R, Tecchio M, Teng PK, Terashi K, Thom J, Thompson AS, Thomson E, Tipton P, Tiwari V, Tkaczyk S, Toback D, Tokar S, Tollefson K, Tomura T, Tonelli D, Torre S, Torretta D, Tourneur S, Trischuk W, Tsuno S, Tu Y, Turini N, Ukegawa F, Uozumi S, Vallecorsa S, van Remortel N, Varganov A, Vataga E, Vazquez F, Velev G, Vellidis C, Veramendi G, Veszpremi V, Vidal M, Vidal R, Vila I, Vilar R, Vine T, Vogel M, Vollrath I, Volobouev I, Volpi G, Würthwein F, Wagner P, Wagner RG, Wagner RL, Wagner J, Wagner W, Wallny R, Wang SM, Warburton A, Waters D, Weinberger M, Wester WC, Whitehouse B, Whiteson D, Wicklund AB, Wicklund E, Williams G, Williams HH, Wilson P, Winer BL, Wittich P, Wolbers S, Wolfe C, Wright T, Wu X, Wynne SM, Yagil A, Yamamoto K, Yamaoka J, Yamashita T, Yang C, Yang UK, Yang YC, Yao WM, Yeh GP, Yoh J, Yorita K, Yoshida T, Yu GB, Yu I, Yu SS, Yun JC, Zanello L, Zanetti A, Zaw I, Zhang X, Zhou J, Zucchelli S. Search for third generation vector leptoquarks inpp¯collisions ats=1.96 TeV. Int J Clin Exp Med 2008. [DOI: 10.1103/physrevd.77.091105] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Li Q, Wang L, Wen Y, Zhou J, Yang L, Wei Y. Inhibition of angiogenesis and the growth of murine colon cancer with recombinant human endostatin adenovirus. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.14634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Sommers KE, Zhou J, Canter A, Li X, Sharma A, Robinson L, Bepler G. Predictive utility of molecular markers for efficacy of preoperative gemcitabine and pemetrexed in lung cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.7544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Li C, Zhao X, Cao X, Chu D, Chen J, Zhou J. The Drosophila Homolog of jwa is Required for Ethanol Tolerance. Alcohol Alcohol 2008; 43:529-36. [DOI: 10.1093/alcalc/agn045] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Huang HH, Zhou J, Huang YP, Kong JL. Impedimetric immunosensor with on-chip integrated electrodes for high-throughput screening of liver fibrosis markers. JOURNAL OF ANALYTICAL CHEMISTRY 2008. [DOI: 10.1134/s1061934808050158] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Starremans PG, Li X, Finnerty PE, Guo L, Takakura A, Neilson EG, Zhou J. A mouse model for polycystic kidney disease through a somatic in-frame deletion in the 5' end of Pkd1. Kidney Int 2008; 73:1394-405. [PMID: 18385665 DOI: 10.1038/ki.2008.111] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Autosomal dominant polycystic kidney disease, a leading cause of end-stage renal disease in adults, is characterized by progressive focal cyst formation in the kidney. Embryonic lethality of Pkd1-targeted mice limits the use of these mice. Here we developed a floxed allele of Pkd1 exons 2-6. Global deletion mutants developed polyhydramnios, hydrops fetalis, polycystic kidney and pancreatic disease. Somatic Pkd1 inactivation in the kidney was achieved by crossing Pkd1(flox) mice with transgenic mice expressing Cre controlled by a gamma-glutamyltranspeptidase promoter. These mutants developed cysts in both proximal and distal nephron segments and survived for about 4 weeks. Somatic loss of heterozygosity was shown in a reporter mouse strain to cause cystogenesis. Some cysts in young mice are positive for multiple tubular markers and a mesenchymal marker, suggesting a delay in tubular epithelial differentiation. A higher cell proliferation rate was observed in distal nephron segments probably accounting for the faster growth rate of distal cysts. Although we observed an overall increase in apoptosis in cystic kidneys, there was no difference between proximal or distal nephron segments. We also found increased cyclic AMP, aquaporin 2 and vasopressin type 2 receptor mRNA levels, and apical membrane translocation of aquaporin 2 in cystic kidneys, all of which may contribute to the differential cyst growth rate observed. The accelerated polycystic kidney phenotype of these mice provides an excellent model for studying molecular pathways of cystogenesis and to test therapeutic strategies.
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Devidze N, Zhang Q, Zhou J, Lee A, Pataky S, Kow LM, Pfaff D. Presynaptic actions of opioid receptor agonists in ventromedial hypothalamic neurons in estrogen- and oil-treated female mice. Neuroscience 2008; 152:942-9. [DOI: 10.1016/j.neuroscience.2008.01.033] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2007] [Revised: 01/18/2008] [Accepted: 02/04/2008] [Indexed: 12/14/2022]
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Li D, Kong Y, Yu H, Lehtinen A, Huang H, Shen F, Min L, Zhou J, Tang G, Wang Q. The construction of a novel kind of non-viral gene delivery vector based on protein as core backbone. Vox Sang 2008; 94:234-241. [PMID: 18167161 DOI: 10.1111/j.1423-0410.2007.01025.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND OBJECTIVES A novel kind of non-viral gene delivery vector based on transferrin (Tf) as the core component was constructed with high transfection efficiency and low toxicity. MATERIALS AND METHODS The synthesis vector of Tf-PEI600 was confirmed by different physicochemical methods, including (1)H nuclear magnetic resonance, gel permeation chromatography, X-ray and thermogravimetric analysis. The cytotoxicity and gene delivery efficiency of the synthesized vector were verified by in vitro experiments. RESULTS The agarose gel electrophoresis assay indicated that the novel copolymer Tf-PEI600 could efficiently condense plasmid DNA and the condensed nanoparticles exhibited a spherical shape. As the weight ratio of Tf-PEI600 to DNA reached 15.0, the particle size (about 200 nm) and the zeta potential (about 20 mV) of the nanoparticles became optimal for gene delivery. The methylthiazolyl tetrazolium (MTT) assay showed the cytotoxicity of Tf-PEI600 to be similar to that of PEI600 and much lower than that of PEI25kDa. In gene-delivery experiments with COS-7 cells and HepG2 cells, the Tf-PEI600 showed about a 30- to 53-fold higher efficiency than PEI600 and nearly equal to that of PEI25kDa. CONCLUSIONS These data suggest that Tf-PEI600, with the advantages of low toxicity and high gene-delivery efficiency, might have great prospects in the practice of gene delivery. The core-shell structure of Tf-PEI600 also provided a novel strategy for the construction of non-viral gene delivery vectors.
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Zhou J, Ciobanu M, Pavon-Djavid G, Gueguen V, Migonney V. Morphology and adhesion of human fibroblast cells cultured on bioactive polymer grafted ligament prosthesis. ACTA ACUST UNITED AC 2008; 2007:5115-8. [PMID: 18003157 DOI: 10.1109/iembs.2007.4353491] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The anterior cruciate ligament (ACL) is the most important ligament for the knee stabilization. Unfortunately, it is also the most commonly injured. Synthetic polymers such as polyethylene terephthalate (PET) are widely used to fabricate ligament prostheses. In this study, we reported how to graft poly(sodium styrene sulfonate) (pNaSS) onto PET fabrics used to prepare ligament at a rate of about 4.5 x 10(-6) mol/g. In this study, we analyzed the morphology of human fibroblast MacCoy adhering onto the pNaSS grafted fabrics. Cell adhesion strength onto grafted and non grafted fabrics previously adsorbed with serum proteins was also evaluated after the application of shear stresses. Results showed that human fibroblast MacCoy adhered more strongly on the pNaSS grafted fabric compared to the non grafted one. The cell spreading is well on the grafted fiber even after the shear stress application: about 65% of cells remained adhered on the pNaSS grafted fabric as compared to 32% on the non grafted one. We concluded that Mac Coy human fibroblast cells strongly adhered onto the pNaSS functionalized PET prosthesis surface and showed a better spread cell morphology as well as a more homogeneous distribution than on the non grafted sample surfaces.
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Huffam SE, Srasuebkul P, Zhou J, Calmy A, Saphonn V, Kaldor JM, Ditangco R. Prior antiretroviral therapy experience protects against zidovudine-related anaemia. HIV Med 2008; 8:465-71. [PMID: 17760739 DOI: 10.1111/j.1468-1293.2007.00498.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE We investigated the use of antiretroviral therapy regimens containing zidovudine or stavudine, using data from the TREAT Asia HIV Observational Database (TAHOD), a multicentre, prospective, observational study of an HIV-infected cohort in the Asia-Pacific Region. METHODS A proportional hazards regression analysis of factors associated with the time to discontinuation of initial regimens containing zidovudine or stavudine and a logistic regression analysis to identify factors associated with a diagnosis of anaemia within 6 months of commencement of zidovudine in initial or subsequent regimens were performed. RESULTS Patients who started zidovudine were more likely to stop within the first 9 months of treatment than those who started on stavudine; the reverse was true after 9 months. Anaemia (haemoglobin<or=10 g/dL) occurred in the first 6 months in 57 of 433 patients (13%) on zidovudine. Baseline anaemia was the strongest predictive factor for subsequent anaemia, and prior antiretroviral therapy (ART) experience was protective for development of anaemia. CONCLUSIONS These data support baseline haemoglobin testing and avoidance of zidovudine if the patient is anaemic. The protective effect of prior ART for development of anaemia on zidovudine supports the short-term safety of a stavudine to zidovudine switch with routine haemoglobin monitoring in this cohort. Further studies in resource-poor settings of longer term efficacy and toxicities of ART switch strategies are needed.
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Dedoussis GVZ, Luo Y, Starremans P, Rossetti S, Ramos AJ, Cantiello HF, Katsareli E, Ziroyannis P, Lamnissou K, Harris PC, Zhou J. Co-inheritance of a PKD1 mutation and homozygous PKD2 variant: a potential modifier in autosomal dominant polycystic kidney disease. Eur J Clin Invest 2008; 38:180-90. [PMID: 18257781 DOI: 10.1111/j.1365-2362.2007.01913.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Autosomal dominant polycystic kidney disease (ADPKD), which is caused by mutations in polycystins 1 (PC1) and 2 (PC2), is one of the most commonly inherited renal diseases, affecting ~1 : 1000 Caucasians. MATERIALS AND METHODS We screened Greek ADPKD patients with the denaturing gradient gel electrophoresis (DGGE) assay and direct sequencing. RESULTS We identified a patient homozygous for a nucleotide change c.1445T > G, resulting in a novel homozygous substitution of the non-polar hydrophobic phenylalanine to the polar hydrophilic cysteine in exon 6 at codon 482 (p.F482C) of the PKD2 gene and a de-novo PKD1 splice-site variant IVS21-2delAG. We did not find this PKD2 variant in a screen of 280 chromosomes of healthy subjects, supporting its pathogenicity. The proband's parents did not have the PKD1 mutation. Real-time PCR of the PKD2 transcript from a skin biopsy revealed 20-fold higher expression in the patient than in a healthy subject and was higher in the patient's peripheral blood mononuclear cells (PBMCs) than in those of her heterozygote daughter and a healthy subject. The greater gene expression was also supported by Western blotting. Inner medullar collecting duct (IMCD) cells transfected with the mutant PKD2 mouse gene presented a perinuclear and diffuse cytoplasmic localization compared with the wild type ER localization. Patch-clamping of PBMCs from the p.F482C homozygous and heterozygous subjects revealed lower polycystin-2 channel function than in controls. CONCLUSIONS We report for the first time a patient with ADPKD who is heterozygous for a de novo PKD1 variant and homozygous for a novel PKD2 mutation.
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Gilerson A, Zhou J, Hlaing S, Ioannou I, Gross B, Moshary F, Ahmed S. Fluorescence component in the reflectance spectra from coastal waters. II. Performance of retrieval algorithms. OPTICS EXPRESS 2008; 16:2446-2460. [PMID: 18542324 DOI: 10.1364/oe.16.002446] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Retrieval of chlorophyll fluorescence magnitude using Fluorescence Height algorithms in coastal waters is more complicated than in the open ocean because of the strong deviations of elastic reflectance within the fluorescence band from the derived fluorescence baseline. We use results of our recently established relationship between fluorescence magnitude and concentrations of water constituents together with extensive HYDROLIGHT simulations, field and satellite data to analyze the performance and retrieval limitations of MODIS and MERIS FLH algorithms in the variety of coastal waters and to examine improvements for spectral band selection suitable for future sensors.
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Zhou J, Billard E, Lakshmivarahan S. Learning in multilevel games with incomplete information. II. IEEE TRANSACTIONS ON SYSTEMS, MAN, AND CYBERNETICS. PART B, CYBERNETICS : A PUBLICATION OF THE IEEE SYSTEMS, MAN, AND CYBERNETICS SOCIETY 2008; 29:340-9. [PMID: 18252309 DOI: 10.1109/3477.764867] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Multilevel games are abstractions of situations where decision makers are distributed in a network environment. In Part I of this paper, the authors present several of the challenging problems that arise in the analysis of multilevel games. In this paper a specific set up is considered where the two games being played are zero-sum games and where the decision makers use the linear reward-inaction algorithm of stochastic learning automata. It is shown that the effective game matrix is decided by the willingness and the ability to cooperate and is a convex combination of two zero-sum game matrices. Analysis of the properties of this effective game matrix and the convergence of the decision process shows that players tend toward noncooperation in these specific environments. Simulation results illustrate this noncooperative behavior.
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Zhang GK, Ding XM, He FS, Yu XY, Zhou J, Hu YJ, Xie JW. Low-temperature synthesis and photocatalytic activity of TiO2 pillared montmorillonite. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:1026-30. [PMID: 18179270 DOI: 10.1021/la702649v] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
TiO2 pillared montmorillonite (PILM) was synthesized by hydrolyzing TiO2 sol into the interlayers of montmorillonite (MMT) at low temperatures. It is novel that all the as-prepared catalysts without calcination show a high photocatalytic activity for the degradation of acid red G (ARG) under UV light irradiation. The as-prepared powders were characterized by XRD, TEM, UV-vis diffuse reflectance spectroscopy, BET, and FT-IR. The X-ray diffraction analysis indicated that the (001) plane of MMT in the composites disappeared and that the layered structure became disordered, which also was confirmed by the TEM photographs. The UV absorption edge of the composites shows a red-shift in comparison to that of pure TiO2 particles. The obtained catalyst has the highest photocatalytic activity when the composite temperature is 70 degrees C, which could be attributed to the synergetic effects of the adsorbability of MMT and the photocatalytic property of TiO2 in it.
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Lee AW, Kyrozis A, Chevaleyre V, Kow LM, Zhou J, Devidze N, Zhang Q, Etgen AM, Pfaff DW. Voltage-dependent calcium channels in ventromedial hypothalamic neurones of postnatal rats: modulation by oestradiol and phenylephrine. J Neuroendocrinol 2008; 20:188-98. [PMID: 18088362 DOI: 10.1111/j.1365-2826.2007.01637.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Oestradiol actions in the hypothalamus play an important role in reproductive behaviour. Oestradiol treatment in vivo induces alpha(1b)-adrenoceptor mRNA and increases the density of alpha(1B)-adrenoceptor binding in the hypothalamus. Oestradiol is also known to modulate neuronal excitability, in some cases by modulating calcium channels. We assessed the effects of phenylephrine, an alpha(1)-adrenergic agonist, on low-voltage-activated (LVA) and high-voltage-activated (HVA) calcium channels in ventromedial hypothalamic (VMN) neurones from vehicle- and oestradiol-treated female rats. Whole-cell and gramicidin perforated-patch recordings were obtained, with barium as the charge carrier. In the absence of phenylephrine, oestradiol treatment increased the magnitude of LVA currents compared to controls, but had no effect on HVA currents. Phenylephrine enhanced HVA currents in a significantly greater proportion of neurones from oestradiol-treated rats (76%) than from vehicle-treated (41%) rats. The L-channel blocker nifedipine abolished this oestradiol effect on phenylephrine-enhanced HVA currents. Preincubating slices with the N-type channel blocker omega-conotoxin GVIA completely blocked the phenylephrine response, suggesting that the N-type channel is essential. Phenylephrine also stimulated LVA currents in approximately two-thirds of neurones in slices from both vehicle- and oestradiol-treated rats. Our data show that oestradiol increases LVA currents in the VMN. Oestradiol also amplifies alpha(1)-adrenergic signalling by increasing the proportion of neurones showing phenylephrine-stimulated HVA currents mediated by N- and L-type calcium channels. In this way, oestradiol may increase excitatory responses to arousing adrenergic inputs to VMN neurones governing oestradiol-dependent reproductive behaviour.
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Zhang Y, Gao X, Liu X, Wang K, Pang J, Zhou J. A new experimental inbred Wistar rat varicocele model: anatomy of the left spermatic vein and the effect on histology. Andrologia 2008; 40:13-7. [DOI: 10.1111/j.1439-0272.2008.00802.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Liu M, Aneja R, Wang H, Sun L, Dong X, Huo L, Joshi HC, Zhou J. Modulation of multidrug resistance in cancer cells by the E3 ubiquitin ligase seven-in-absentia homologue 1. J Pathol 2007; 214:508-14. [DOI: 10.1002/path.2312] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Aaltonen T, Abulencia A, Adelman J, Affolder T, Akimoto T, Albrow MG, Amerio S, Amidei D, Anastassov A, Anikeev K, Annovi A, Antos J, Aoki M, Apollinari G, Arisawa T, Artikov A, Ashmanskas W, Attal A, Aurisano A, Azfar F, Azzi-Bacchetta P, Azzurri P, Bacchetta N, Badgett W, Barbaro-Galtieri A, Barnes VE, Barnett BA, Baroiant S, Bartsch V, Bauer G, Beauchemin PH, Bedeschi F, Behari S, Bellettini G, Bellinger J, Belloni A, Benjamin D, Beretvas A, Beringer J, Berry T, Bhatti A, Binkley M, Bisello D, Bizjak I, Blair RE, Blocker C, Blumenfeld B, Bocci A, Bodek A, Boisvert V, Bolla G, Bolshov A, Bortoletto D, Boudreau J, Boveia A, Brau B, Brigliadori L, Bromberg C, Brubaker E, Budagov J, Budd HS, Budd S, Burkett K, Busetto G, Bussey P, Buzatu A, Byrum KL, Cabrera S, Campanelli M, Campbell M, Canelli F, Canepa A, Carrillo S, Carlsmith D, Caron B, Carosi R, Carron S, Casal B, Casarsa M, Castro A, Catastini P, Cauz D, Cavalli-Sforza M, Cerri A, Cerrito L, Chang SH, Chen YC, Chertok M, Chiarelli G, Chlachidze G, Chlebana F, Cho I, Cho K, Chokheli D, Chou JP, Choudalakis G, Chuang SH, Chung K, Chung WH, Chung YS, Cilijak M, Ciobanu CI, Ciocci MA, Clark A, Clark D, Coca M, Compostella G, Convery ME, Conway J, Cooper B, Copic K, Cordelli M, Cortiana G, Crescioli F, Cuenca Almenar C, Cuevas J, Culbertson R, Cully JC, Daronco S, Datta M, D'Auria S, Davies T, Dagenhart D, de Barbaro P, De Cecco S, Deisher A, De Lentdecker G, De Lorenzo G, Dell'orso M, Delli Paoli F, Demortier L, Deng J, Deninno M, De Pedis D, Derwent PF, Di Giovanni GP, Dionisi C, Di Ruzza B, Dittmann JR, D'Onofrio M, Dörr C, Donati S, Dong P, Donini J, Dorigo T, Dube S, Efron J, Erbacher R, Errede D, Errede S, Eusebi R, Fang HC, Farrington S, Fedorko I, Fedorko WT, Feild RG, Feindt M, Fernandez JP, Field R, Flanagan G, Forrest R, Forrester S, Franklin M, Freeman JC, Furic I, Gallinaro M, Galyardt J, Garcia JE, Garberson F, Garfinkel AF, Gay C, Gerberich H, Gerdes D, Giagu S, Giannetti P, Gibson K, Gimmell JL, Ginsburg C, Giokaris N, Giordani M, Giromini P, Giunta M, Giurgiu G, Glagolev V, Glenzinski D, Gold M, Goldschmidt N, Goldstein J, Golossanov A, Gomez G, Gomez-Ceballos G, Goncharov M, González O, Gorelov I, Goshaw AT, Goulianos K, Gresele A, Grinstein S, Grosso-Pilcher C, Grundler U, Guimaraes da Costa J, Gunay-Unalan Z, Haber C, Hahn K, Hahn SR, Halkiadakis E, Hamilton A, Han BY, Han JY, Handler R, Happacher F, Hara K, Hare D, Hare M, Harper S, Harr RF, Harris RM, Hartz M, Hatakeyama K, Hauser J, Hays C, Heck M, Heijboer A, Heinemann B, Heinrich J, Henderson C, Herndon M, Heuser J, Hidas D, Hill CS, Hirschbuehl D, Hocker A, Holloway A, Hou S, Houlden M, Hsu SC, Huffman BT, Hughes RE, Husemann U, Huston J, Incandela J, Introzzi G, Iori M, Ivanov A, Iyutin B, James E, Jang D, Jayatilaka B, Jeans D, Jeon EJ, Jindariani S, Johnson W, Jones M, Joo KK, Jun SY, Jung JE, Junk TR, Kamon T, Karchin PE, Kato Y, Kemp Y, Kephart R, Kerzel U, Khotilovich V, Kilminster B, Kim DH, Kim HS, Kim JE, Kim MJ, Kim SB, Kim SH, Kim YK, Kimura N, Kirsch L, Klimenko S, Klute M, Knuteson B, Ko BR, Kondo K, Kong DJ, Konigsberg J, Korytov A, Kotwal AV, Kraan AC, Kraus J, Kreps M, Kroll J, Krumnack N, Kruse M, Krutelyov V, Kubo T, Kuhlmann SE, Kuhr T, Kulkarni NP, Kusakabe Y, Kwang S, Laasanen AT, Lai S, Lami S, Lammel S, Lancaster M, Lander RL, Lannon K, Lath A, Latino G, Lazzizzera I, Lecompte T, Lee J, Lee J, Lee YJ, Lee SW, Lefèvre R, Leonardo N, Leone S, Levy S, Lewis JD, Lin C, Lin CS, Lindgren M, Lipeles E, Lister A, Litvintsev DO, Liu T, Lockyer NS, Loginov A, Loreti M, Lu RS, Lucchesi D, Lujan P, Lukens P, Lungu G, Lyons L, Lys J, Lysak R, Lytken E, Mack P, Macqueen D, Madrak R, Maeshima K, Makhoul K, Maki T, Maksimovic P, Malde S, Malik S, Manca G, Manousakis A, Margaroli F, Marginean R, Marino C, Marino CP, Martin A, Martin M, Martin V, Martínez M, Martínez-Ballarín R, Maruyama T, Mastrandrea P, Masubuchi T, Matsunaga H, Mattson ME, Mazini R, Mazzanti P, McFarland KS, McIntyre P, McNulty R, Mehta A, Mehtala P, Menzemer S, Menzione A, Merkel P, Mesropian C, Messina A, Miao T, Miladinovic N, Miles J, Miller R, Mills C, Milnik M, Mitra A, Mitselmakher G, Miyamoto A, Moed S, Moggi N, Mohr B, Moon CS, Moore R, Morello M, Fernandez PM, Mülmenstädt J, Mukherjee A, Muller T, Mumford R, Murat P, Mussini M, Nachtman J, Nagano A, Naganoma J, Nakamura K, Nakano I, Napier A, Necula V, Neu C, Neubauer MS, Nielsen J, Nodulman L, Norniella O, Nurse E, Oh SH, Oh YD, Oksuzian I, Okusawa T, Oldeman R, Orava R, Osterberg K, Pagliarone C, Palencia E, Papadimitriou V, Papaikonomou A, Paramonov AA, Parks B, Pashapour S, Patrick J, Pauletta G, Paulini M, Paus C, Pellett DE, Penzo A, Phillips TJ, Piacentino G, Piedra J, Pinera L, Pinfold J, Pitts K, Plager C, Pondrom L, Portell X, Poukhov O, Pounder N, Prakoshyn F, Pronko A, Proudfoot J, Ptohos F, Punzi G, Pursley J, Rademacker J, Rahaman A, Ramakrishnan V, Ranjan N, Redondo I, Reisert B, Rekovic V, Renton P, Rescigno M, Richter S, Rimondi F, Ristori L, Robson A, Rodrigo T, Rogers E, Rolli S, Roser R, Rossi M, Rossin R, Roy P, Ruiz A, Russ J, Rusu V, Saarikko H, Safonov A, Sakumoto WK, Salamanna G, Saltó O, Santi L, Sarkar S, Sartori L, Sato K, Savard P, Savoy-Navarro A, Scheidle T, Schlabach P, Schmidt EE, Schmidt MP, Schmitt M, Schwarz T, Scodellaro L, Scott AL, Scribano A, Scuri F, Sedov A, Seidel S, Seiya Y, Semenov A, Sexton-Kennedy L, Sfyrla A, Shalhout SZ, Shapiro MD, Shears T, Shepard PF, Sherman D, Shimojima M, Shochet M, Shon Y, Shreyber I, Sidoti A, Sinervo P, Sisakyan A, Slaughter AJ, Slaunwhite J, Sliwa K, Smith JR, Snider FD, Snihur R, Soderberg M, Soha A, Somalwar S, Sorin V, Spalding J, Spinella F, Spreitzer T, Squillacioti P, Stanitzki M, Staveris-Polykalas A, Denis RS, Stelzer B, Stelzer-Chilton O, Stentz D, Strologas J, Stuart D, Suh JS, Sukhanov A, Sun H, Suslov I, Suzuki T, Taffard A, Takashima R, Takeuchi Y, Tanaka R, Tecchio M, Teng PK, Terashi K, Thom J, Thompson AS, Thomson E, Tipton P, Tiwari V, Tkaczyk S, Toback D, Tokar S, Tollefson K, Tomura T, Tonelli D, Torre S, Torretta D, Tourneur S, Trischuk W, Tsuno S, Tu Y, Turini N, Ukegawa F, Uozumi S, Vallecorsa S, van Remortel N, Varganov A, Vataga E, Vazquez F, Velev G, Vellidis C, Veramendi G, Veszpremi V, Vidal M, Vidal R, Vila I, Vilar R, Vine T, Vogel M, Vollrath I, Volobouev I, Volpi G, Würthwein F, Wagner P, Wagner RG, Wagner RL, Wagner J, Wagner W, Wallny R, Wang SM, Warburton A, Waters D, Weinberger M, Wester WC, Whitehouse B, Whiteson D, Wicklund AB, Wicklund E, Williams G, Williams HH, Wilson P, Winer BL, Wittich P, Wolbers S, Wolfe C, Wright T, Wu X, Wynne SM, Yagil A, Yamamoto K, Yamaoka J, Yamashita T, Yang C, Yang UK, Yang YC, Yao WM, Yeh GP, Yoh J, Yorita K, Yoshida T, Yu GB, Yu I, Yu SS, Yun JC, Zanello L, Zanetti A, Zaw I, Zhang X, Zhou J, Zucchelli S. Search for exclusive gammagamma production in Hadron-Hadron collisions. PHYSICAL REVIEW LETTERS 2007; 99:242002. [PMID: 18233441 DOI: 10.1103/physrevlett.99.242002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2007] [Indexed: 05/25/2023]
Abstract
We have searched for exclusive gammagamma production in proton-antiproton collisions at sqrt[s]=1.96 TeV, using 532 pb(-1) of integrated luminosity taken by the run II Collider Detector at Fermilab. The event signature requires two electromagnetic showers, each with transverse energy E(T)>5 GeV and pseudorapidity |eta|<1.0, with no other particles detected in the event. Three candidate events are observed. We discuss the consistency of the three events with gammagamma, pi(0)pi(0), or eta eta production. The probability that other processes fluctuate to >or=3 events is 1.7x10(-4). An upper limit on the cross section of pp-->p + gammagamma + p production is set at 410 fb with 95% confidence level.
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Gruenewald M, Zhou J, Schloemerkemper N, Meybohm P, Weiler N, Tonner PH, Scholz J, Bein B. M-Entropy guidance vs standard practice during propofol-remifentanil anaesthesia: a randomised controlled trial. Anaesthesia 2007; 62:1224-9. [PMID: 17991257 DOI: 10.1111/j.1365-2044.2007.05252.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Seventy-two patients undergoing routine surgical procedures under propofol-remifentanil anaesthesia were randomly assigned to receive either standard clinical practice (n = 35) or standard practice plus monitoring of depth of anaesthesia with M-Entropy (n = 37). Patients in the standard practice group received more propofol than the entropy group (mean (SD) 95 (14) vs 81 (22) microg.kg(-1).min(-1), respectively; p < 0.01), and less remifentanil (0.39 (0.08) vs 0.46 (0.08) microg.kg(-1).min(-1), respectively; p < 0.001). Loss of consciousness was best predicted by BIS (prediction probability (P(K)) 0.96) and response entropy (P(K) 0.93), whereas emergence was best predicted by response entropy (P(K) 0.94). The frequency of unwanted patient responses was higher in the standard practice group than in the entropy group (47 vs 27 total events, respectively; p < 0.01). Both regimens resulted in fast recovery with no clinical advantage for either one. There were no significant differences in haemodynamic parameters, postoperative nausea and vomiting or satisfaction with the procedure.
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Herr B, Zhou J, Dröse S, Brüne B. The interaction of superoxide with nitric oxide destabilizes hypoxia-inducible factor-1alpha. Cell Mol Life Sci 2007; 64:3295-305. [PMID: 17989922 PMCID: PMC11136123 DOI: 10.1007/s00018-007-7371-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
In renal carcinoma cells (RCC4) hypoxia inducible factor-1 (HIF-1) is constitutively expressed due to a von Hippel Lindau protein deficiency, but can be degraded by calpain, independently of the 26S proteasome, when exposed to hypoxia/nitric oxide (NO). In this study we examined molecular mechanisms to explain calpain activation. The inability of hypoxia/NO to degrade HIF-1alpha in respiratory-deficient RCC4-rho0 cells pointed to the requirement for mitochondria-derived reactive oxygen species. A prerequisite for O(2)(-) in combination with NO to destabilize HIF-1alpha was corroborated in RCC4-rho0 cells, when the redox cycler 2,3-dimethoxy-1,4-naphthoquinone was used as a source of superoxide. Degradation of HIF-1alpha required intracellular calcium transients and calpain activation. Using uric acid to interfere with signal transmission elicited by NO/O(2)(-) blocked HIF-1alpha degradation and attenuated a calcium increase. We conclude that an oxidative signal as a result of NO/O(2)(-) coformation triggers a calcium increase that activates calpain to degrade HIF-1alpha, independently of the proteasome.
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