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Wang HT, Zeng L, Chen Q, Zhang X, Liu JW, Lu TJ, Xiong ZQ, Zheng J, Hu ZL. β-Catenin is required for maintaining hippocampal morphology during the perinatal period. Neuroscience 2014; 284:273-282. [PMID: 25290010 DOI: 10.1016/j.neuroscience.2014.08.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 08/26/2014] [Accepted: 08/27/2014] [Indexed: 11/26/2022]
Abstract
In mice, the compact hippocampal primordium is formed during the prenatal stage by early-generated neurons that migrate from the lateral ventricular zone. However, despite much being understood about the formation of the hippocampus, the molecular mechanisms that maintain the morphology of the hippocampal primordium after its formation remain to be characterized. β-Catenin is a key factor of canonical Wnt signaling and also a component of adherens junctions. Previous embryonic deletion studies have demonstrated that β-catenin is required for early development and generation of granule cells. However, whether β-catenin is involved in the morphological maintenance of the hippocampus as a cell adhesion molecule is still unknown. Here, we report that perinatal deletion of β-catenin in postmitotic neurons and some radial glial cells of hippocampus using CamKIIα-iCre; β-cateninflox/flox conditional knockout mice, leads to disorganization of the radial glial scaffold and consequentially severe defects in hippocampal morphology. We demonstrate that β-catenin is required for maintaining radial glial scaffold possibly via its well-known role in cell adhesion during the perinatal period. These findings provide essential advances into our understanding of the maintenance of the hippocampal primordium during the perinatal period.
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Affiliation(s)
- H-T Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - L Zeng
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - Q Chen
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - X Zhang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - J-W Liu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China
| | - T-J Lu
- Institute of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Z-Q Xiong
- Institute of Neuroscience, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - J Zheng
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
| | - Z-L Hu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
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152
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Yan X, Zhao T, An L, Zhao G, Zeng L. A micro-porous current collector enabling passive direct methanol fuel cells to operate with highly concentrated fuel. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.06.150] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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153
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Wang Y, Qi M, McGarrigle J, Bochenek M, Li Z, Zeng L, Marchese E, Wang Q, Nourmohammadzadeh M, Oberholzer J. Diazoxide Preconditioning of Non-Human Primate Pancreas During Procurement and Preservation Improves Islet Isolation Outcomes and Function. Transplantation 2014. [DOI: 10.1097/00007890-201407151-00069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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154
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Cao Y, Li A, Li L, Yan X, Fa Y, Zeng L, Fan J, Liu B, Sun Z. Identification of 32 major histocompatibility complex class I alleles in African green monkeys. ACTA ACUST UNITED AC 2014; 84:304-7. [PMID: 24899078 DOI: 10.1111/tan.12389] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 04/24/2014] [Accepted: 05/08/2014] [Indexed: 11/30/2022]
Abstract
The African green monkey may be an ideal replacement for the rhesus monkey in biomedical research, but relatively little is known about the genetic background of major histocompatibility complex (MHC) class I molecules. In analysis of 12 African green monkeys, 13 Chae-A and 19 Chae-B alleles were identified. Among these alleles, 12 Chae-A and 9 Chae-B were new lineages. The full amino acid length deduced for Chae-A genes is 365 amino acids, but for Chae-B genes, the lengths are 365, 362, 361, and 359 amino acids, respectively. There were 1-3 Chae-A alleles and 2-5 Chae-B alleles in each animal. In African green monkeys, rhesus monkeys, and cynomolgus monkeys, the MHC-A and MHC-B alleles display trans-species polymorphism, rather than being clustered in a species-specific fashion.
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Affiliation(s)
- Y Cao
- Laboratory Animal Center, The Academy of Military Medical Science, Beijing, China; College of Life Sciences, Tarim University, Alaer, China
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Van Londen M, Humalda JK, Aarts BM, Sanders JS, Bakker SJL, Navis GJ, De Borst MH, Pazik J, O Dak M, Lewandowski Z, Podgorska M, Sadowska A, Sitarek E, Malejczyk J, Durlik M, Drechsler C, Philstrom H, Meinitzer A, Pilz S, Tomaschitz A, Abedini S, Fellstrom B, Jardine A, Wanner C, Maerz W, Holdaas H, Halleck F, Staeck O, Neumayer HH, Budde K, Khadzhynov D, Rostaing L, Allal A, Congy N, Aarninck A, Del Bello A, Maggioni S, Debiols B, Sallusto F, Kamar N, Stolyarevich E, Artyukhina L, Kim I, Tomilina N, Zaidenov V, Kurenkova L, Keyzer CA, De Borst MH, Van Den Berg E, Jahnen-Dechent W, Navis G, Bakker SJL, Van Goor H, Pasch A, Aulagnon F, Avettand-Fenoel V, Scemla A, Lanternier F, Lortholary O, Anglicheau D, Legendre C, Zuber J, Furic-Cunko V, Basic-Jukic N, Coric M, Kastelan Z, Hudolin T, Kes P, Mikolasevic I, Racki S, Lukenda V, Orlic L, Dobrowolski LC, Verberne HJ, Ten Berge IJM, Bemelman FJ, Krediet CTP, Ferreira AC, Silva C, Remedio F, Pena A, Nolasco F, Heldal K, Lonning K, Leivestad T, Reisaeter AV, Hartmann A, Foss AE, Midtvedt K, Vlachopanos G, Kassimatis T, Zerva A, Kokkona A, Stavroulaki E, Agrafiotis A, Sanchez Sobrino B, Lafuente Covarrubias O, Karsten Alvarez S, Zalamea Jarrin F, Rubio Gonzalez E, Huerta Arroyo A, Portoles Perez J, Basic-Jukic N, Kes P, Baek CH, Kim M, Kim JS, Yang WS, Han DJ, Park SK, Zulkarnaev A, Vatazin A, Cabiddu G, Maxia S, Castellino S, Loi V, Guzzo G, Piccoli GB, Pani A, Bucsa C, Tacu D, Harza M, Sinescu I, Mircescu G, Stefan G, Alfieri CM, Laura F, Danilovic B, Cresseri D, Meneghini M, Riccardo F, Regalia A, Messa P, Panuccio V, Tripepi R, Parlongo G, Quattrone S, Leonardis D, Tripepi G, Zoccali C, Mallamaci F, Amer H, Geerdes PA, Fettes TT, Prieto M, Walker RC, Edwards BS, Cosio FG, Khrabrova M, Nabokov A, Groene HJ, Weithofer P, Kliem V, Smirnov A, Dobronravov V, Sezer S, Gurlek Demirci B, Tutal E, Guliyev O, Say N CB, Ozdemir Acar FN, Haberal M, Albugami MM, Hussein M, Alsaeed S, Almubarak A, Bel'eed-Akkari K, Go biewska JE, Tarasewicz A, D bska- lizie A, Rutkowski B, Albugami MM, Hussein M, Almubarak A, Alsaeed S, Bel'eed-Akkari K, Ailioaie O, Arzouk N, Tourret J, Mercadal L, Szumilak D, Ourahma S, Parra J, Billault C, Barrou B, Alfieri CM, Floreani R, Ulivieri FM, Meneghini M, Regalia A, Zanoni F, Croci D, Rastaldi MP, Messa PG, Keyzer CA, Riphagen IJ, Joosten MM, Navis G, Muller Kobold AC, Kema IP, Bakker SJL, De Borst MH, Santos Lascasas J, Malheiro J, Fonseca I, Martins L, Almeida M, Pedroso S, Dias L, Henriques A, Cabrita A, Vincenti F, Weir M, Von Visger J, Kopyt N, Mannon R, Deng H, Yue S, Wolf M, Halleck F, Khadzhynov, D, Schmidt D, Petereit F, Slowinski T, Neumayer HH, Budde K, Staeck O, Hernandez Vargas H, Artamendi Larranaga M, Gil Catalinas F, Ramalle Gomara E, Bello Ovalle A, Pimentel Guzman G, Coloma Lopez A, Dall Anesse C, Gil Paraiso A, Beired Val I, Sierra Carpio M, Huarte Loza E, Slubowska K, Szmidt J, Chmura A, Durlik M, Staeck O, Khadzhynov D, Schmidt D, Niemann M, Petereit F, Lachmann N, Neumayer HH, Budde K, Halleck F, Alotaibi T, Nampoory N, Gheith O, Halim M, Aboatteya H, Mansour H, Abdulkawey H, Said T, Nair P, WazNa-Jab O Ska E, Durlik M, Elias M, Caillard S, Morelon E, Rivalan J, Moal V, Frimat L, Mourad G, Rerolle JP, Legendre C, Mousson C, Delahousse M, Pouteil-Noble C, Dantal J, Cassuto E, Subra JF, Lang P, Thervet E, Roosweil D, Molnar MZ, Fornadi K, Ronai KZ, Novak M, Mucsi I, Scale TM, Robertson S, Kumwenda M, Jibani M, Griffin S, Williams AJ, Mikhail A, Jeong JC, Koo TY, Jeon HJ, Han M, Oh KH, Ahn C, Yang J, Bancu I, Canas L, Juega J, Malumbres S, Guermah I, Bonet J, Lauzurica R, Basso E, Messina M, Daidola G, Mella A, Lavacca A, Manzione AM, Rossetti M, Ranghino A, Ariaudo C, Segoloni GP, Biancone L, Whang E, Son SH, Kwon H, Kong JJ, Choi WY, Yoon CS, Ferreira AC, Silva C, Aires I, Ferreira A, Remedio F, Nolasco F, Ratkovic M, Basic Jukic N, Gledovic B, Radunovic D, Prelevic V, Stefan G, Garneata L, Bucsa C, Harza M, Sinescu I, Mircescu G, Tacu D, Aniort J, Kaysi S, Mulliez A, Heng AE, Su owicz J, Wojas-Pelc A, Ignacak E, Janda K, Krzanowski M, Miarka P, Su owicz W, Filipov JJ, Zlatkov BK, Dimitrov EP, Svinarov DA, Champion L, Renoux C, Randoux C, Du Halgouet C, Azeroual L, Glotz D, Vrtovsnik F, Daugas E, Musetti C, Battista M, Cena T, Izzo C, Airoldi A, Magnani C, Stratta P, Fiskvik I, Holte H, Bentdal O, Holdaas H, Erkmen Uyar M, Sezer S, Bal Z, Guliyev O, Colak T, Gurlek Demirci B, Ozdemir Acar N, Haberal M, Kara E, Ahbap E, Basturk T, Koc Y, Sakaci T, Sahutoglu T, Akgol C, Sevinc M, Unsal A, Seyahi N, Abdultawab K, Alotaibi T, Gheith O, Mansour H, Halim M, Nair P, Said T, Balaha M, Elsayed A, Awadeen W, Nampoory N, Hwang JC, Jiang MY, Lu YH, Weng SF, Madziarska K, Zmonarski SC, Augustyniak-Bartosik H, Magott-Procelewska M, Krajewska M, Mazanowska O, Banasik M, Penar J, Weyde W, Boraty Ska M, Klinger M, Swarnalatha G, Narendranath L, Shanta Rao G, Sawhney A, Subrahmanyam L, Kumar S, Jeon H, Hakim A, Patel U, Shrivastava S, Banerjee D, Kimura T, Yagisawa T, Nanmoku K, Kurosawa A, Sakuma Y, Miki A, Nukui A, Lee CH, Oh IH, Park JS, Watarai Y, Narumi S, Goto N, Hiramitsu T, Tsujita M, Yamamoto T, Kobayashi T, Muniz Pacios L, Molina M, Cabrera J, Gonzalez E, Garcia Santiago A, Aunon P, Santana S, Polanco N, Gutierrez E, Jimenez C, Andres A, Mohammed M, Hammam M, Housawi A, Goldsmith DJ, Cronin A, Frame S, Smalcelj R, Canoz MB, Yavuz DD, Altunoglu A, Yavuz R, Colak T, Haberal M, Tong A, Hanson CS, Chapman JR, Halleck F, Budde K, Papachristou C, Craig J, Zheng XY, Han S, Wang LM, Zhu YH, Zeng L, Zhou MS, Guliyev O, Erkmen Uyar M, Sezer S, Bal Z, Colak T, Gurlek Demirci B, Ozdemir Acar N, Haberal M, Ranghino A, Diena D, De Rosa FG, Faletti R, Barbui AM, Guarnaccia C, Corcione S, Messina M, Ariaudo C, Segoloni GP, Biancone L, Patel R, Murray PD, Moiseev A, Kalachik A, Harden PN, Norby G, Mjoen G, Holdaas H, Gilboe IM, Shi Y, Luo L, Cai B, Wang T, Tao Y, Wang L, Erkmen Uyar M, Sezer S, Bal Z, Guliyev O, Tutal E, Gurlek Demirci B, Ozdemir Acar N, Haberal M, Di Vico MC, Messina M, Mezza E, Giraudi R, Nappo A, Boaglio E, Ranghino A, Fop F, Segoloni GP, Biancone L, Carta P, Dattolo E, Buti E, Zanazzi M, Villari D, Di Maria L, Santoro G, Li Marzi V, Minetti EE, Nicita G, Carta P, Zanazzi M, Buti E, Antognoli G, Dervishi E, Vignali L, Caroti L, Di Maria L, Minetti EE, Dorje C, Kovacevic G, Hammarstrom C, Strom EH, Holdaas H, Midtvedt K, Reisaeter AV, Alfieri CM, Floreani R, Meneghini M, Regalia A, Zanoni F, Vettoretti S, Croci MD, Rastaldi MP, Messa P, Heldal K, Lonning K, Reisaeter AV, Bernklev T, Midtvedt K, Strakosha A, Pasko N, Nasto F, Cadri V, Dedei A, Thereska N. TRANSPLANTATION CLINICAL 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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156
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Liu B, Yan X, Fan JW, Zeng L, Sun ZZ. Seven novel MHC class I alleles identified in Cercopithecus mitis. ACTA ACUST UNITED AC 2014; 83:422-3. [PMID: 24673478 DOI: 10.1111/tan.12336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 01/27/2014] [Accepted: 02/18/2014] [Indexed: 11/27/2022]
Abstract
We report here the identification of three Cemi-A and four Cemi-B novel alleles of Cercopithecus mitis.
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Affiliation(s)
- B Liu
- Laboratory Animal Center, Academy of Military Medical Science, Beijing, China
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157
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Jin F, Wu W, Li Y, Long J, He M, Zeng L. Induction Chrono-Chemotherapy Plus Radiation Therapy for Nasopharyngeal Carcinoma: A Phase 2 Prospective Randomized Study. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2013.11.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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158
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Zeng L, Li Y, Hu Y, Xu Q. The role of X-box binding protein 1 splicing in smooth muscle cell proliferation and neointima formation. Atherosclerosis 2014. [DOI: 10.1016/j.atherosclerosis.2013.11.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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159
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160
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Jiang Z, Cristofanilli M, Shao Z, Tong Z, Song E, Wang X, Liao N, Hu X, Liu Y, Wang Y, Zeng L, Zhang M. Circulating tumor cells predict progression-free and overall survival in Chinese patients with metastatic breast cancer, HER2-positive or triple-negative (CBCSG004): a multicenter, double-blind, prospective trial. Ann Oncol 2013; 24:2766-72. [DOI: 10.1093/annonc/mdt246] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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161
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Zhang L, Xu MM, Zeng L, Liu S, Liu X, Wang X, Li D, Huang RZ, Zhao LB, Zhan QL, Zhu D, Zhang YY, Xu P, Xie P. Evidence for Borna disease virus infection in neuropsychiatric patients in three western China provinces. Eur J Clin Microbiol Infect Dis 2013; 33:621-7. [PMID: 24170181 DOI: 10.1007/s10096-013-1996-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 10/07/2013] [Indexed: 11/24/2022]
Abstract
Borna disease virus (BDV) is a non-cytolytic, neurotropic RNA virus that can infect a wide variety of vertebrate species from birds and primates to humans. Several studies have been carried out to investigate whether BDV is associated with neuropsychiatric diseases. However, this association is still inconclusive. Two panels of subjects consisting of 1,679 various neuropsychiatric patients and healthy people from three western China provinces were enrolled in this study. BDV p24 or p40 RNA in peripheral blood mononuclear cells (PBMCs) were detected in the first panel of 1,481 subjects using reverse transcription quantitative polymerase chain reaction (RT-qPCR) and cerebrospinal fluid (CSF) samples from the BDV RNA-positive individuals were subjected to BDV p24 antibodies testing by enzyme-linked immunosorbent assay (ELISA). BDV p24 or p40 RNA in PBMCs and p24 antibodies in plasma were detected in the second panel of 198 subjects by RT-qPCR and Western blot. A higher prevalence for BDV RNA was demonstrated in patients with viral encephalitis (6.70%), Guillain-Barré syndrome (6.70%), schizophrenia (9.90%) and chronic fatigue syndrome (CFS) (12.70%) compared to healthy controls in the first panel. CSF p24 antibodies were demonstrated in three viral encephalitis patients, two schizophrenia patients and two major depressive disorder (MDD) patients. The prevalences of p24 antibodies in plasma from patients with viral encephalitis (13.24%), multiple sclerosis (25.00%) and Parkinson's disease (22.73%) were significantly higher than healthy controls. This study demonstrates that BDV infection also exists in humans from three western China provinces, and suggests the involvement of the contribution of BDV in the aetiology of Chinese patients with some neuropsychiatric disorders, including viral encephalitis, schizophrenia, CFS, multiple sclerosis and Parkinson's disease.
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Affiliation(s)
- L Zhang
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, No. 1 Youyi Road, Yuzhong District, 400016, Chongqing, People's Republic of China
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162
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Biernacka KM, Uzoh CC, Zeng L, Persad RA, Bahl A, Gillatt D, Perks CM, Holly JMP. Hyperglycaemia-induced chemoresistance of prostate cancer cells due to IGFBP2. Endocr Relat Cancer 2013; 20:741-51. [PMID: 23959956 DOI: 10.1530/erc-13-0077] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Clinically relevant prostate cancer (PCa) is more frequent in Westernised societies and increasingly men have co-morbidities associated with a Western lifestyle, primarily diabetes, characterised by hyperinsulinaemia and hyperglycaemia. IGFs and their binding proteins (IGFBPs) are important mediators of the effects of nutrition on growth and play a key role in the development of PCa. We used DU145, PC3 and LNCaP PCa cell lines to examine how hyperglycaemia altered their response to docetaxel. Trypan Blue dye-exclusion assay was used to determine the percentage of cell death. Protein abundance was determined using western immunoblotting. Levels of IGFBP2 were measured using an ELISA. IGFBP2 gene silencing was achieved using siRNA technology. DNA methylation was assessed using combined bisulphide restriction analysis. Acetylation status of histones H3 and H4 associated with IGFBP2 gene was assessed using chromatin immunoprecipitation assay. Hyperglycaemia reduced docetaxel-induced apoptosis by 40% for DU145 cells and by 88% for LNCaP cells. This reduced cell death was mediated by a glucose-induced up-regulation of IGFBP2, as silencing IGFBP2 negated the survival effect of high glucose. Glucose increased IGFBP2 via increasing the acetylation of histones associated with the IGFBP2 gene promoter. This finding could have important implications in relation to therapeutic strategies as epigenetic modulation could be reversible.
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Affiliation(s)
- K M Biernacka
- IGFs and Metabolic Endocrinology Group, School of Clinical Sciences at North Bristol, Southmead Hospital, UK
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163
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Gavala ML, Liu YP, Lenertz LY, Zeng L, Blanchette JB, Guadarrama AG, Denlinger LC, Bertics PJ, Smith JA. Nucleotide receptor P2RX7 stimulation enhances LPS-induced interferon-β production in murine macrophages. J Leukoc Biol 2013; 94:759-68. [PMID: 23911869 PMCID: PMC3774844 DOI: 10.1189/jlb.0712351] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Revised: 05/22/2013] [Accepted: 06/27/2013] [Indexed: 12/22/2022] Open
Abstract
Stimulation of P2RX(7) with extracellular ATP potentiates numerous LPS-induced proinflammatory events, including cytokine induction in macrophages, but the molecular mechanisms underlying this process are not well defined. Although P2RX(7) ligation has been proposed to activate several transcription factors, many of the LPS-induced mediators affected by P2RX(7) activation are not induced by P2RX(7) agonists alone, suggesting a complementary role for P2RX(7) in transcriptional regulation. Type I IFN production, whose expression is tightly controlled by multiple transcription factors that form an enhanceosome, is critical for resistance against LPS-containing bacteria. The effect of purinergic receptor signaling on LPS-dependent type I IFN is unknown and would be of great relevance to a diverse array of inflammatory conditions. The present study demonstrates that stimulation of macrophages with P2RX(7) agonists substantially enhances LPS-induced IFN-β expression, and this enhancement is ablated in macrophages that do not express functional P2RX(7) or when the MAPK MEK1/2 pathways are inhibited. Potentiation of LPS-induced IFN-β expression following P2RX(7) stimulation is likely transcriptionally regulated, as this enhancement is observed at the IFN-β promoter level. Furthermore, P2RX(7) stimulation is able to increase the phosphorylation and subsequent IFN-β promoter occupancy of IRF-3, a transcription factor that is critical for IFN-β transcription by TLR agonists. This newly discovered role for P2RX(7) in IFN regulation may have implications in antimicrobial defense, which has been linked to P2RX(7) activation in other studies.
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Affiliation(s)
- M L Gavala
- 2.University of Wisconsin School of Medicine and Public Health, 600 Highland Ave., CSC H4/472, Madison, WI 53792-9988, USA.
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164
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Zhou M, Holden L, Lao N, Lam H, Zeng L, Chow E. Accuracy of Clinicians’ Prediction of Survival and Prognostic Factors Indicative of Survival: a Systematic Review. Hong Kong J Radiol 2013. [DOI: 10.12809/hkjr1313179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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165
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Ma J, Sun S, Zeng L, Lu Y. Establishment, characterization and viral susceptibility of two cell lines derived from leopard wrasse Macropharyngodon geoffroy. J Fish Biol 2013; 83:560-573. [PMID: 23991874 DOI: 10.1111/jfb.12193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2012] [Accepted: 06/12/2013] [Indexed: 06/02/2023]
Abstract
Two new fish cell lines were established from skin (LWSK) and fin (LWFN) of leopard wrasse Macropharyngodon geoffroy. These cells grew optimally at 25° C in Leibovitz-15 medium supplemented with 10% foetal bovine serum. Proliferation of M. geoffroy cells remained serum dependent up to cell passage 16, and cell-plating efficiency ranged from 12 to 16%. Karyotypic analysis of these new cell lines at cell passage 8 indicated that both cell lines remained diploid with a peak chromosomal count of 144. PCR amplification of 16S mitochondrial DNA and the subsequent analysis confirmed that these cell lines were indeed derived from M. geoffroy. Results of viral challenge assays revealed that both LWSK and LWFN shared patterns of viral susceptibility similar to that of six fish viruses tested: LWSK and LWFN cells were highly permissive to channel catfish virus, spring viremia carp virus and snakehead rhabdovirus with high-yield virus production ranging from 10(7·18±0·17) to 10(8·37±0·16) TCID50 ml(-1) (mean ± s.d.). These newly established cell lines would be useful in attempts to isolate and study aquatic viruses, particularly the viral aetiology of green turtle fibropapilloma as M. geoffroy is known to be one of the common cleaner fish of green sea turtles.
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Affiliation(s)
- J Ma
- Department of Public Health Sciences, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu, HI, 96822, USA
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Yan Z, Zeng L, Li Z, Zhang H, Chen W, Jia L, Chen C, Cheng H, Cao J, Xu K. Bone marrow-derived endothelial progenitor cells promote hematopoietic reconstitution after hematopoietic stem cell transplantation. Transplant Proc 2013; 45:427-33. [PMID: 23375333 DOI: 10.1016/j.transproceed.2012.03.064] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Revised: 02/18/2012] [Accepted: 03/06/2012] [Indexed: 12/13/2022]
Abstract
OBJECTIVE A hematopoietic deficit is a serious complication after hematopoietic stem cell transplantation. It has been shown that fetal blood-derived endothelial progenitor cells (EPCs) can promote hematopoietic reconstitution after transplantation. This study investigated whether EPCs from bone marrow (BM) of adult mice could promote hematopoietic reconstitution. METHODS Lethally irradiated BALB/c mice were administered BM cells or BM cells plus EPCs. RESULTS The results showed that EPC-treated mice displayed accelerated recovery of peripheral blood white blood cells and reticulocytes. But the platelets were not significantly different with versus without EPCs. Accelerated recovery of BM sinusoidal vessels, promotion of stem cell implantation, and decreased adipocyte formation were associated with the mechanism. Systemic administration of anti-vascular endothelial cadherin antibody neutralized these effects significantly. CONCLUSION These data showed that BM-derived EPC infusions augmented hematopoiesis suggesting a new approach to promote hematopoiesis.
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Affiliation(s)
- Z Yan
- Department of Haematology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, China
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168
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Rack M, Liang Y, Jaegers H, Assmann J, Satheeswaran G, Xu Y, Pearson J, Yang Y, Denner P, Zeng L. A rotating directional probe for the measurements of fast ion losses and plasma rotation at Tokamak Experiment for Technology Oriented Research. Rev Sci Instrum 2013; 84:083501. [PMID: 24007059 DOI: 10.1063/1.4816821] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This work discusses a new directional probe designed for measurements of fast ion losses and the plasma rotation with a high angular resolution in magnetically confined plasmas. Directional and especially Mach probes are commonly used diagnostics for plasma flow measurements, and their applicability for the fast ion losses detection has been demonstrated. A limitation of static Mach probes is their low angular resolution. At the Tokamak Experiment for Technology Oriented Research, the angular resolution is strongly restricted by the finite number of available measurement channels. In a dynamic plasma, where instabilities can lead to local changes of the field line pitch-angle, plasma flow, or fast ion losses, a low angular resolution makes a precise data analysis difficult and reduces the quality of the measured data. The new probe design, the rotating directional probe, combines the features of early directional probes and Mach probes. It consists of two radially aligned arrays of nine Langmuir probe pins with each array facing opposite directions. During the measurement the probe head rotates along its axis to measure the ion saturation current from all directions. As a result, the rotating directional probe simultaneously provides an angular dependent plasma flow and fast ion losses measurement at different radial positions. Based on the angular dependent data, a precise determination of the current density is made. In addition, the simultaneous measurement of the ion saturation current at different radial positions allows for resolving radially varying field line pitch-angles and identifying the radial dynamic of processes like fast ion losses.
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Affiliation(s)
- M Rack
- Institute of Energy and Climate Research - Plasma Physics, Forschungszentrum Jülich GmbH, Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, D-52425 Jülich, Germany
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169
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Leung P, Xu Q, Zhao T, Zeng L, Zhang C. Preparation of silica nanocomposite anion-exchange membranes with low vanadium-ion crossover for vanadium redox flow batteries. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.04.155] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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170
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Huang GZ, Shan W, Zeng L, Huang LG. The GSTP1 A1578G polymorphism and the risk of childhood acute lymphoblastic leukemia: results from an updated meta-analysis. Genet Mol Res 2013; 12:2481-91. [PMID: 23979883 DOI: 10.4238/2013.july.24.3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Studies investigating the association between the glutathione S-transferase P1 (GSTP1) A1578G polymorphism and the risk of childhood acute lymphoblastic leukemia (ALL) report conflicting results. The aim of this study was to quantitatively summarize the evidence for such a relationship. Two investigators independently searched the Medline, Embase, China National Knowledge Infrastructure, and Wangfang databases for studies of the polymorphism and ALL. Summary odds ratios (ORs) and 95% confidence intervals (CIs) for the GSTP1 polymorphism and childhood ALL were calculated in a fixed-effect model. Pooled ORs were calculated for a co-dominant model (GG vs AA, AG vs AA), a dominant model (GG + AG vs AA), and a recessive model (GG vs AA + AG). Analyses were also performed in subgroups stratified by race, study design, genotyping methods, and study sample size. This meta-analysis included 8 case-control studies with 1384 childhood ALL cases and 1755 controls. Overall, the variant genotypes (GG and AG) of A1578G were not associated with childhood ALL risk, when compared with the wild-type homozygote AA genotype (GG vs AA, OR = 1.09, 95%CI = 0.84-1.43; AG vs AA, OR = 1.05, 95%CI = 0.91-1.23). Similarly, no associations were found in the dominant and recessive models (dominant model, OR = 1.06, 95%CI = 0.92-1.23; recessive model, OR = 1.09, 95%CI = 0.84-1.43). Stratified analyses did not detect significant association in any subgroup. No heterogeneity or publication bias was observed in the present study. This updated meta-analysis indicates that the GSTP1 A1578G polymorphism is not associated with the risk of childhood ALL. In the future, additional studies in Asian and African-American patients should be performed to re-evaluate the association in these populations.
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Affiliation(s)
- G Z Huang
- Department of Pediatric Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan Province, China
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171
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Rainbow R, Kwon H, Foote A, Preda R, Kaplan D, Zeng L. Muscle cell-derived factors inhibit inflammatory stimuli-induced damage in hMSC-derived chondrocytes. Osteoarthritis Cartilage 2013; 21:990-8. [PMID: 23611899 PMCID: PMC3766901 DOI: 10.1016/j.joca.2013.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 04/08/2013] [Accepted: 04/14/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Pro-inflammatory cytokines play an important role in inducing cartilage degradation during osteoarthritis pathogenesis. Muscle is a tissue that lies near cartilage in situ. However, muscle's non-loading biochemical effect on cartilage has been largely unexplored. Here, we tested the hypothesis that muscle cells can regulate the response to pro-inflammatory cytokine-mediated damage in chondrocytes derived from human bone marrow-derived mesenchymal stem cells (hMSCs). METHOD hMSCs were allowed to undergo chondrogenic differentiation in porous silk scaffolds in the typical chondrogenic medium for 12 days. For the next 9 days, the cells were cultured in chondrogenic medium containing 50% conditioned medium derived from C2C12 muscle cells or fibroblast control cells, and were subject to treatments of pro-inflammatory cytokines IL-1β or TNFα. RESULTS Both IL-1β and TNFα-induced strong expression of multiple MMPs and hypertrophic markers Runx2 and type X collagen. Strikingly, culturing hMSC-derived chondrocytes in C2C12 muscle cell-conditioned medium strongly inhibited the expression of all these genes, a result further confirmed by GAG content and histological evaluation of matrix protein. To determine whether these effects were due to altered chondrocyte growth and survival, we assayed the expression of cell proliferation marker Ki67, cell cycle arrest markers p21 and p53, and apoptosis marker caspase 3. Muscle cell-conditioned medium promoted proliferation and inhibited apoptosis, thereby suggesting a possible decrease in the cellular aging and death that typically accompanies cartilage inflammation. CONCLUSION Our findings suggest the role of muscle in cartilage homeostasis and provide insight into designing strategies for promoting resistance to pro-inflammatory cytokines in hMSC-derived chondrocytes.
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Affiliation(s)
- R.S. Rainbow
- Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA
| | - H. Kwon
- Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA,Program in Cellular, Molecular and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, 136 Harrison Avenue, Boston, MA 02111, USA
| | - A.T. Foote
- Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA
| | - R.C. Preda
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - D.L. Kaplan
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, USA
| | - L. Zeng
- Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA,Program in Cellular, Molecular and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, 136 Harrison Avenue, Boston, MA 02111, USA,Department of Orthopaedic Surgery, Tufts Medical Center, 800 Washington Street, Boston, MA 02111, USA,Address correspondence and reprint requests to: L. Zeng. Department of Anatomy and Cellular Biology, Tufts University School of Medicine, 136 Harrison Avenue, Boston, MA 02111, USA. Tel: 1-617-636-2107; Fax: 1-617-636-3676. (L. Zeng)
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172
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Zeng L, Koslowski HR, Liang Y, Lvovskiy A, Lehnen M, Nicolai D, Pearson J, Rack M, Jaegers H, Finken KH, Wongrach K, Xu Y. Experimental observation of a magnetic-turbulence threshold for runaway-electron generation in the TEXTOR tokamak. Phys Rev Lett 2013; 110:235003. [PMID: 25167504 DOI: 10.1103/physrevlett.110.235003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Indexed: 06/03/2023]
Abstract
Magnetic turbulence is observed at the beginning of the current quench in intended TEXTOR disruptions. Runaway electron (RE) suppression has been experimentally found at magnetic turbulence larger than a certain threshold. Below this threshold, the generated RE current is inversely proportional to the level of magnetic turbulence. The magnetic turbulence originates from the background plasma and the amplitude depends strongly on the toroidal magnetic field and plasma electron density. These results explain the previously found toroidal field threshold for RE generation and have to be considered in predictions for RE generation in ITER.
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Affiliation(s)
- L Zeng
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research-Plasma Physics (IEK-4), Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Jülich, Germany and Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, China
| | - H R Koslowski
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research-Plasma Physics (IEK-4), Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Jülich, Germany
| | - Y Liang
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research-Plasma Physics (IEK-4), Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Jülich, Germany
| | - A Lvovskiy
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research-Plasma Physics (IEK-4), Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Jülich, Germany
| | - M Lehnen
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research-Plasma Physics (IEK-4), Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Jülich, Germany and ITER Organization, Route de Vinon sur Verdon, 13115 St Paul Lez Durance, France
| | - D Nicolai
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research-Plasma Physics (IEK-4), Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Jülich, Germany
| | - J Pearson
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research-Plasma Physics (IEK-4), Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Jülich, Germany
| | - M Rack
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research-Plasma Physics (IEK-4), Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Jülich, Germany
| | - H Jaegers
- Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research-Plasma Physics (IEK-4), Association EURATOM-FZJ, Trilateral Euregio Cluster, 52425 Jülich, Germany
| | - K H Finken
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - K Wongrach
- Institut für Laser- und Plasmaphysik, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Y Xu
- Laboratoire de Physique des Plasmas-Laboratorium voor Plasmafysica, Association 'Euratom-Belgian state', Ecole Royale Militaire-Koninklijke Militaire School, Trilateral Euregio Cluster, 1000 Brussels, Belgium
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173
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Liang Y, Gong XZ, Gan KF, Gauthier E, Wang L, Rack M, Wang YM, Zeng L, Denner P, Wingen A, Lv B, Ding BJ, Chen R, Hu LQ, Hu JS, Liu FK, Jie YX, Pearson J, Qian JP, Shan JF, Shen B, Shi TH, Sun Y, Wang FD, Wang HQ, Wang M, Wu ZW, Zhang SB, Zhang T, Zhang XJ, Yan N, Xu GS, Guo HY, Wan BN, Li JG. Magnetic topology changes induced by lower hybrid waves and their profound effect on edge-localized modes in the EAST tokamak. Phys Rev Lett 2013; 110:235002. [PMID: 25167503 DOI: 10.1103/physrevlett.110.235002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2013] [Indexed: 06/03/2023]
Abstract
Strong mitigation of edge-localized modes has been observed on Experimental Advanced Superconducting Tokamak, when lower hybrid waves (LHWs) are applied to H-mode plasmas with ion cyclotron resonant heating. This has been demonstrated to be due to the formation of helical current filaments flowing along field lines in the scrape-off layer induced by LHW. This leads to the splitting of the outer divertor strike points during LHWs similar to previous observations with resonant magnetic perturbations. The change in the magnetic topology has been qualitatively modeled by considering helical current filaments in a field-line-tracing code.
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Affiliation(s)
- Y Liang
- Forschungszentrum Jülich GmbH, Association EURATOM-FZ Jülich, Institut für Energie und Klimaforschung Plasmaphysik, Trilateral Euregio Cluster, D-52425 Jülich, Germany
| | - X Z Gong
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - K F Gan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - E Gauthier
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
| | - L Wang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - M Rack
- Forschungszentrum Jülich GmbH, Association EURATOM-FZ Jülich, Institut für Energie und Klimaforschung Plasmaphysik, Trilateral Euregio Cluster, D-52425 Jülich, Germany
| | - Y M Wang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - L Zeng
- Forschungszentrum Jülich GmbH, Association EURATOM-FZ Jülich, Institut für Energie und Klimaforschung Plasmaphysik, Trilateral Euregio Cluster, D-52425 Jülich, Germany and Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - P Denner
- Forschungszentrum Jülich GmbH, Association EURATOM-FZ Jülich, Institut für Energie und Klimaforschung Plasmaphysik, Trilateral Euregio Cluster, D-52425 Jülich, Germany
| | - A Wingen
- Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6169, USA
| | - B Lv
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - B J Ding
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - R Chen
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - L Q Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - J S Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - F K Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Y X Jie
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - J Pearson
- Forschungszentrum Jülich GmbH, Association EURATOM-FZ Jülich, Institut für Energie und Klimaforschung Plasmaphysik, Trilateral Euregio Cluster, D-52425 Jülich, Germany
| | - J P Qian
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - J F Shan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - B Shen
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - T H Shi
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Y Sun
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - F D Wang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - H Q Wang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - M Wang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Z W Wu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - S B Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - T Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - X J Zhang
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - N Yan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - G S Xu
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - H Y Guo
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - B N Wan
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - J G Li
- Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
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174
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Poon M, Zeng L, Zhang L, Lam H, Emmenegger U, Wong E, Bedard G, Lao N, Chow R, Chow E. Incidence of skeletal-related events over time from solid tumour bone metastases reported in randomised trials using bone-modifying agents. Clin Oncol (R Coll Radiol) 2013; 25:435-44. [PMID: 23582277 DOI: 10.1016/j.clon.2013.03.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 02/12/2013] [Accepted: 02/13/2013] [Indexed: 11/26/2022]
Abstract
AIMS Skeletal-related events (SREs) in patients with bone metastases decrease a patient's quality of life and functional status. Although bone-modifying agents have been found to reduce the time to first on-trial SRE and decrease the total incidence of SREs in randomised clinical trials, standard practice in the management of bone metastases has changed concurrently. The purpose of this study was to investigate if advances in bone-targeted therapies have decreased the incidence of individual types of SREs and to delineate the trend of SREs. MATERIALS AND METHODS A literature review was conducted in MEDLINE, EMBASE and the Cochrane Central Register of Controlled Trials to identify phase III, randomised bisphosphonate and other bone-targeted therapy trials from 1980 to September 2011. For all studies, a mean year of enrolment ([start of enrolment + end of enrolment]/2) was calculated. The incidences of SREs were tabulated and expressed as percentages of on-trial patients. Generalised linear mixed models were used to search for the trends of SREs over time for all placebo and intervention arms. Regression coefficients were interpreted as the odds ratio, which was calculated using the exponential of the slope. Ninety-five per cent confidence intervals were also calculated. RESULTS In total, 20 eligible studies were identified that reported SRE data from phase III trials, of which 11 were suitable for the quantitative analysis. Most of the articles included patients with breast cancer and the remaining involved patients with prostate, renal cell, bladder and lung cancer or other solid tumours. Enrolment periods for all included data ranged from 1990 to 2009. Statistically significant overall downward trends in pathological fractures and the need for surgery were seen over time. Also significant differences between intervention and placebo were seen with all SREs. CONCLUSION The decrease in SREs over time may not only be a result of the development of new generation bone-targeted agents, but also due to better systemic management and awareness of events associated with bone metastases.
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Affiliation(s)
- M Poon
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
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175
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Burne RA, Zeng L, Ahn SJ, Palmer SR, Liu Y, Lefebure T, Stanhope MJ, Nascimento MM. Progress dissecting the oral microbiome in caries and health. Adv Dent Res 2013; 24:77-80. [PMID: 22899685 DOI: 10.1177/0022034512449462] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Recent rapid advances in "-omics" technologies have yielded new insights into the interaction of the oral microbiome with its host. Associations of species that are usually considered to be acid-tolerant with caries have been confirmed, while some recognized as health-associated are often present in greater proportions in the absence of caries. In addition, some newly identified bacteria have been suggested as potential contributors to the caries process. In spite of this progress, two major challenges remain. The first is that there is a great deal of heterogeneity in the phenotypic capabilities of individual species of oral bacteria. The second is that the most abundant taxa in oral biofilms display remarkable phenotypic plasticity, i.e., the bacteria associated most strongly with health or with caries can morph rapidly in response to alterations in environmental pH, carbohydrate availability and source, and oxygen tension and redox environment. However, new technologic advances coupled with "old-fashioned microbiology" are starting to erode the barriers to a more complete understanding of oral biofilm physiology and ecology, and in doing so are beginning to provide insights for the creation of novel cost-effective caries control therapies.
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Affiliation(s)
- R A Burne
- Department of Oral Biology, University of Florida College of Dentistry, 1395 Center Drive, Gainesville, FL 32610, USA.
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176
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Lauzon N, Bedard G, Zhang L, Sahgal A, Zeng L, Koo K, Chow E. Health Care Professionals' Evaluation of Quality Of Life Issues in Patients with Brain Metastases. J Med Imaging Radiat Sci 2013. [DOI: 10.1016/j.jmir.2012.12.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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177
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Lauzon N, Bedard G, Zhang L, Sahgal A, Zeng L, Koo K, Chow E. PO-0948: Health care professionals' evaluation of quality of life issues in patients with brain metastases. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33254-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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178
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Zeng L, Xue P, Stanhope MJ, Burne RA. A galactose-specific sugar: phosphotransferase permease is prevalent in the non-core genome of Streptococcus mutans. Mol Oral Microbiol 2013; 28:292-301. [PMID: 23421335 DOI: 10.1111/omi.12025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2013] [Indexed: 12/01/2022]
Abstract
Three genes predicted to encode the A, B and C domains of a sugar : phosphotransferase system (PTS) permease specific for galactose\(EII(Gal) ) were identified in the genomes of 35 of 57 recently sequenced isolates of Streptococcus mutans, the primary etiological agent of human dental caries. Mutants defective in the EII(Gal) complex were constructed in six of the isolates and showed markedly reduced growth rates on galactose-based medium relative to the parental strains. An EII(Gal) -deficient strain constructed using the invasive serotype f strain OMZ175 (OMZ/IIGal) expressed significantly lower PTS activity when galactose was present as the substrate. Galactose was shown to be an effective inducer of catabolite repression in OMZ175, but not in the EII(Gal) -deficient strain. In a mixed-species competition assay with galactose as the sole carbohydrate source, OMZ/IIGal was less effective than the parental strain at competing with the oral commensal bacterium Streptococcus gordonii, which has a high-affinity galactose transporter. Hence, a significant proportion of S. mutans strains encode a galactose PTS permease that could enhance the ability of these isolates to compete more effectively with commensal streptococci for galactose in salivary constituents and the diet.
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Affiliation(s)
- L Zeng
- Department of Oral Biology, College of Dentistry, University of Florida, Gainesville, FL 32610, USA
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179
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Hillesheim JC, DeBoo JC, Peebles WA, Carter TA, Wang G, Rhodes TL, Schmitz L, McKee GR, Yan Z, Staebler GM, Burrell KH, Doyle EJ, Holland C, Petty CC, Smith SP, White AE, Zeng L. Observation of a critical gradient threshold for electron temperature fluctuations in the DIII-D Tokamak. Phys Rev Lett 2013; 110:045003. [PMID: 25166172 DOI: 10.1103/physrevlett.110.045003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Indexed: 06/03/2023]
Abstract
A critical gradient threshold has been observed for the first time in a systematic, controlled experiment for a locally measured turbulent quantity in the core of a confined high-temperature plasma. In an experiment in the DIII-D tokamak where L(T(e))(-1) = |∇T(e)|/T(e) and toroidal rotation were varied, long wavelength (k(θ)ρ(s) ≲ 0.4) electron temperature fluctuations exhibit a threshold in L(T(e))(-1): below, they change little; above, they steadily increase. The increase in δT(e)/T(e) is concurrent with increased electron heat flux and transport stiffness. Observations were insensitive to rotation. Accumulated evidence strongly enforces the identification of the experimentally observed threshold with ∇T(e)-driven trapped electron mode turbulence.
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Affiliation(s)
- J C Hillesheim
- Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90024-1547, USA
| | - J C DeBoo
- General Atomics, San Diego, California 92186-5608, USA
| | - W A Peebles
- Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90024-1547, USA
| | - T A Carter
- Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90024-1547, USA
| | - G Wang
- Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90024-1547, USA
| | - T L Rhodes
- Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90024-1547, USA
| | - L Schmitz
- Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90024-1547, USA
| | - G R McKee
- University of Wisconsin Madison, Madison, Wisconsin 53706-1687, USA
| | - Z Yan
- University of Wisconsin Madison, Madison, Wisconsin 53706-1687, USA
| | - G M Staebler
- General Atomics, San Diego, California 92186-5608, USA
| | - K H Burrell
- General Atomics, San Diego, California 92186-5608, USA
| | - E J Doyle
- Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90024-1547, USA
| | - C Holland
- University of California at San Diego, La Jolla, California 92093-0417, USA
| | - C C Petty
- General Atomics, San Diego, California 92186-5608, USA
| | - S P Smith
- General Atomics, San Diego, California 92186-5608, USA
| | - A E White
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - L Zeng
- Department of Physics and Astronomy, University of California at Los Angeles, Los Angeles, California 90024-1547, USA
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Abstract
Most cancers occur in those older than the age of 65 years. As the population of the world ages and life expectancies continue to increase, it is important to address treatment challenges for elderly patients. This narrative review details the challenges of palliative radiotherapy treatment for elderly patients with bone metastases. We begin with the definition of elderly and its appropriateness, outlining recent demographic data of patients with cancer. The current status of elderly participation in clinical trials is discussed by reviewing the recent literature and clinical trial data. Factors affecting enrolment of the elderly are assessed, with a focus on palliative radiotherapy trials, and what we can do to improve accrual in this data-driven setting. At present, there is a lack of level 1 evidence that evaluates the optimal treatment for elderly patients with bone metastases. Therefore, a review of safety and efficacy is given based on previously published reports. Palliative radiotherapy for elderly patients is a worthwhile treatment and should be recommended regardless of age, as supported by available evidence. Patient, family and physician concerns about physical burden may be reduced as single treatments (that often can be done in a single visit) are as beneficial as multiple treatments for painful bone metastases. In elderly patients, radiotherapy may even be the best treatment for these cases as opioid-related adverse events are amplified in this group and often dosages are more difficult to titrate. Clinicians should continue to encourage the enrolment of elderly patients on to clinical trials as these data form the basis of optimal treatment guidelines. Radiation oncologists are encouraged to reduce the physical burden for elderly patients by offering single treatments where appropriate and completing consultation, treatment simulation and treatment in a single clinical visit.
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Affiliation(s)
- L Zeng
- Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada
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181
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Chiang A, Zeng L, Koo K, Chow E, Lochray F, Masucci L, Korol R, Sahgal A. Incidence of Pain Flare Following Stereotactic Body Radiation Therapy for Bone Metastases. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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182
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Zhang J, Peebles WA, Carter TA, Crocker NA, Doyle EJ, Kubota S, Nguyen X, Rhodes TL, Wannberg C, Zeng L. Design of a millimeter-wave polarimeter for NSTX-Upgrade and initial test on DIII-D. Rev Sci Instrum 2012; 83:10E321. [PMID: 23126979 DOI: 10.1063/1.4733735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Polarimetry is a powerful diagnostic technique to probe plasma equilibria and magnetic fluctuations in fusion plasmas. In a high beta plasma such as the National Spherical Torus eXperiment (NSTX), these measurements are important to understand plasma stability and anomalous transport. A 288 GHz polarimeter operating along a major radial chord in retroreflection geometry has been developed and is being tested on the DIII-D tokamak to prepare for future implementation on NSTX-Upgrade. The system launches a rotating linearly polarized beam and detects the phase shift directly related to the polarization change caused by the plasma. To accomplish this, a pair of orthogonal linearly polarized beams with a stable difference frequency is generated using a single sideband modulation technique, then combined and transformed to be counter-rotating circularly polarized. To improve phase resolution, quasi-optical isolation, using Faraday rotators and polarizers, is utilized to eliminate a multi-path feedback effect, which is found to be the primary source of phase error. The bench tests in the laboratory and DIII-D power supply test discharges indicate ≤1° phase resolution.
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Affiliation(s)
- J Zhang
- Department of Physics and Astronomy, UCLA, Los Angeles, California 90095-1547, USA.
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183
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Zhang H, Zeng L, Liang C, Qiu H, Zhang M, Zhu Y, Xie C. Successful Treatment of Hurthle Cell Thyroid Carcinoma with Lung and Liver Metastasis Using Docetaxel and Cisplatin. Jpn J Clin Oncol 2012; 42:1086-90. [DOI: 10.1093/jjco/hys146] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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184
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Smith J, Liu YP, Zeng L, Bomkamp A, Gutman D, Barber G. P129 Endoplasmic reticulum stress activates interferon regulatory factor 3. Cytokine 2012. [DOI: 10.1016/j.cyto.2012.06.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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185
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Khan L, Mitera G, Probyn L, Ford M, Christakis M, Finkelstein J, Donovan A, Zhang L, Zeng L, Rubenstein J, Yee A, Holden L, Chow E. Inter-rater reliability between musculoskeletal radiologists and orthopedic surgeons on computed tomography imaging features of spinal metastases. ACTA ACUST UNITED AC 2012; 18:e282-7. [PMID: 22184495 DOI: 10.3747/co.v18i6.797] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION The primary objective of this pilot study was to examine the inter-rater reliability in scoring the computed tomography (ct) imaging features of spinal metastases in patients referred for radiotherapy (rt) for bone pain. METHODS In a retrospective review, 3 musculoskeletal radiologists and 2 orthopedic spinal surgeons independently evaluated ct imaging features for 41 patients with spinal metastases treated with rt in an outpatient radiation clinic from January 2007 to October 2008. The evaluation used spinal assessment criteria that had been developed in-house, with reference to osseous and soft tissue tumour extent,presence of a pathologic fracture,severity of vertebral height loss, andpresence of kyphosis.The Cohen kappa coefficient between the two specialties was calculated. RESULTS Mean patient age was 69.2 years (30 men, 11 women). The mean total daily oral morphine equivalent was 73.4 mg. Treatment dose-fractionation schedules included 8 Gy/1 (n = 28), 20 Gy/5 (n = 12), and 20 Gy/8 (n = 1). Areas of moderate agreement in identifying the ct imaging appearance of spinal metastasis included extent of vertebral body involvement (κ = 0.48) and soft-tissue component (κ = 0.59). Areas of fair agreement included extent of pedicle involvement (κ = 0.28), extent of lamina involvement (κ = 0.35), and presence of pathologic fracture (κ = 0.20). Areas of poor agreement included nerve-root compression (κ = 0.14) and vertebral body height loss (κ = 0.19). CONCLUSIONS The range of agreement between musculoskeletal radiologists and orthopedic surgeons for most spinal assessment criteria is moderate to poor. A consensus for managing challenging vertebral injuries secondary to spinal metastases needs to be established so as to best triage patients to the most appropriate therapeutic modality.
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Affiliation(s)
- L Khan
- Bone Metastases Site Group, Odette Cancer Centre, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON
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186
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Zhu Y, Zhao T, Itasaka S, Zeng L, Yeom CJ, Hirota K, Suzuki K, Morinibu A, Shinomiya K, Ou G, Yoshimura M, Hiraoka M, Harada H. Involvement of decreased hypoxia-inducible factor 1 activity and resultant G1-S cell cycle transition in radioresistance of perinecrotic tumor cells. Oncogene 2012; 32:2058-68. [PMID: 22710721 PMCID: PMC3631307 DOI: 10.1038/onc.2012.223] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Cancer patients often suffer from local tumor recurrence after radiation therapy. Some intracellular and extracellular factors, such as activity of hypoxia-inducible factor 1 (HIF-1), cell cycle status and oxygen availability, have been suggested to affect DNA damage responses and eventual radioresistant characteristics of cancer cells. But when, where, and how these factors affect one another and induce cellular radioresistance is largely unknown. Here, we analyzed mechanistic and spatio-temporal relationships among them in highly heterogeneous tumor microenvironments. Experiments in vitro demonstrated that a decrease in the glucose concentration reduced the transcriptional activity of HIF-1 and expression of a downstream gene for the cell cycle regulator p27Kip1 even under hypoxic conditions. Then, the proportion of cells in the radioresistant S phase increased, whereas that in the radiosensitive G1 phase decreased, significantly. Immunohistochemical analyses showed that cancer cells in perinecrotic hypoxic regions, which should be under low-glucose conditions, expressed little HIF-1α, and therefore, were mainly in S phase and less damaged by radiation treatment. Continuous administration of glucagon, which increases the blood glucose concentration and so improves glucose availability in perinecrotic hypoxic regions, induced HIF-1α expression and increased radiation-induced DNA damage. Taken all together, these results indicate that cancer cells in perinecrotic regions, which would be under low-glucose and hypoxic conditions, obtain radioresistance by decreasing the level of both HIF-1 activity and p27Kip1 expression, and adjusting their cell cycle to the radioresistant S phase.
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Affiliation(s)
- Y Zhu
- Group of Radiation and Tumor Biology, Career-Path Promotion Unit for Young Life Scientists, Kyoto University, Kyoto, Japan
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187
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Cheng H, Tian J, Li Z, Zeng L, Pan B, Song G, Chen W, Xu K. TH17 Cells Are Critical for Skin-Specific Pathological Injury in Acute Graft-Versus-Host Disease. Transplant Proc 2012; 44:1412-8. [DOI: 10.1016/j.transproceed.2011.12.078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Revised: 10/19/2011] [Accepted: 12/14/2011] [Indexed: 12/18/2022]
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188
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Schmitz L, Zeng L, Rhodes TL, Hillesheim JC, Doyle EJ, Groebner RJ, Peebles WA, Burrell KH, Wang G. Role of zonal flow predator-prey oscillations in triggering the transition to H-mode confinement. Phys Rev Lett 2012; 108:155002. [PMID: 22587261 DOI: 10.1103/physrevlett.108.155002] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Indexed: 05/31/2023]
Abstract
Direct evidence of zonal flow (ZF) predator-prey oscillations and the synergistic roles of ZF- and equilibrium E×B flow shear in triggering the low- to high-confinement (L- to H-mode) transition in the DIII-D tokamak is presented. Periodic turbulence suppression is first observed in a narrow layer at and just inside the separatrix when the shearing rate transiently exceeds the turbulence decorrelation rate. The final transition to H mode with sustained turbulence and transport reduction is controlled by equilibrium E×B shear due to the increasing ion pressure gradient.
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Affiliation(s)
- L Schmitz
- University of California-Los Angeles, Los Angeles, California 90095, USA
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189
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Salvo N, Zeng L, Zhang L, Leung M, Khan L, Presutti R, Nguyen J, Holden L, Culleton S, Chow E. Frequency of Reporting and Predictive Factors for Anxiety and Depression in Patients with Advanced Cancer. Clin Oncol (R Coll Radiol) 2012; 24:139-48. [PMID: 21652191 DOI: 10.1016/j.clon.2011.05.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 03/21/2011] [Accepted: 03/22/2011] [Indexed: 11/15/2022]
Affiliation(s)
- N Salvo
- Rapid Response Radiotherapy Program, Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada
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190
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Bi Y, Zeng L, Zhu D, Yan J, Zhang Y, Tong G, Mu P, Shen S, Hu Y, Yu Q, Liang H, Weng J. Association of β-cell function and insulin sensitivity with fasting and 2-h plasma glucose in a large Chinese population. Diabetes Obes Metab 2012; 14:174-80. [PMID: 21951345 DOI: 10.1111/j.1463-1326.2011.01504.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
AIM Our aim was to provide a quantitative analysis of the changes in the principal determinants of insulin sensitivity and secretion in relation to fasting plasma glucose (FPG) or 2-h plasma glucose (2h PG) in a Chinese population with a wide range of glucose tolerance. METHODS A total of 5728 adults spanning the entire range of glucose tolerance were included. Insulin sensitivity was measured by Matsuda insulin sensitivity index (ISI(M)) and homeostasis model assessment of 1/homeostasis model assessment of insulin resistance (HOMA-IR). β-Cell function adjusted by insulin sensitivity was assessed from disposition index (DI) at early-phase DI(30) and total DI(120). The exponential curve was established as the best fit for the relationship between insulin sensitivity or β-cell function and FPG or 2h PG. RESULTS Relative to the trend classified as increasing 2h PG, hepatic insulin sensitivity and insulin secretion showed a decreasing trend to a substantial degree as FPG increased. A 1 mmol/l increase in FPG and 2h PG concentration was associated with a -22 and -21% decline in ISI(M), -16 and -4% in 1/HOMA-IR, -38 and -35% in DI(30) and -36 and -26% in DI(120). The decay constant of ISI(M) and DI(30) in IFG or ISI(M), 1/HOMA-IR, DI(30) and DI(120) in IGT was lower than that in normal glucose tolerance. Significant interactions between sex and glucose levels determining DI were found. CONCLUSIONS We conclude that impairment of insulin sensitivity and insulin secretion contributes to both FPG or 2h PG hyperglycaemia in a Chinese population, but that the decline in insulin secretion is more pronounced with increasing fasting than 2h PG.
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Affiliation(s)
- Y Bi
- Department of Endocrinology, Drum Tower Hospital Affiliated to Nanjing University Medical School, Nanjing, China
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191
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Jin T, Zeng L, Lin YY, Lu YY, Liang GW. Characteristics of protein variants in trichlorphon-resistant Bactrocera dorsalis (Diptera; Tephritidae) larvae. Genet Mol Res 2012; 11:2608-19. [DOI: 10.4238/2012.july.10.12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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192
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Zeng L, Zhou S. A Bayesian approach to risk-adjusted outcome monitoring in healthcare. Stat Med 2011; 30:3431-46. [PMID: 21969272 DOI: 10.1002/sim.4374] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Revised: 07/01/2011] [Accepted: 07/26/2011] [Indexed: 11/09/2022]
Abstract
Clinical outcomes are commonly monitored in healthcare practices to detect changes in care providers' performance. One key challenge in outcome monitoring is the need of adjustment for patient base-line risks. Various control charting methods have been developed to conduct risk-adjusted outcome monitoring, but they all rely on the availability of a large number of historical data. We propose a Bayesian approach to this type of monitoring for cases where historical data are not available. In our approach, detection of change is formulated as a model-selection problem and solved using a popular Bayesian tool for variable selection, the Bayes factor. Issues in decision-making about whether there is a change point in the observed patient outcomes are addressed, including specification of priors and computation of Bayes factors. This approach is applied to a real data set on cardiac surgeries, and its performance under different parameter scenarios is studied through simulations.
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Affiliation(s)
- L Zeng
- Department of Industrial and Manufacturing Systems Engineering, The University of Texas at Arlington, Arlington, TX 76019, USA.
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193
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Dennis K, Wong K, Zhang L, Culleton S, Nguyen J, Holden L, Jon F, Tsao M, Danjoux C, Barnes E, Sahgal A, Zeng L, Koo K, Chow E. Palliative Radiotherapy for Bone Metastases in the Last 3 Months of Life: Worthwhile or Futile? Clin Oncol (R Coll Radiol) 2011; 23:709-15. [DOI: 10.1016/j.clon.2011.05.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 03/24/2011] [Accepted: 03/28/2011] [Indexed: 11/29/2022]
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194
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Chow E, Zeng L, Salvo N, Dennis K, Tsao M, Lutz S. Update on the systematic review of palliative radiotherapy trials for bone metastases. Clin Oncol (R Coll Radiol) 2011; 24:112-24. [PMID: 22130630 DOI: 10.1016/j.clon.2011.11.004] [Citation(s) in RCA: 395] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 10/08/2011] [Accepted: 11/09/2011] [Indexed: 12/25/2022]
Abstract
AIMS To update previous meta-analyses of randomised palliative radiotherapy trials comparing single fractions versus multiple fractions. MATERIALS AND METHODS All published randomised controlled trials comparing single fraction versus multiple fraction schedules for the palliation of uncomplicated bone metastases were included in this analysis. Odds ratios and 95% confidence intervals were calculated for each trial. Forest plots were created using a random effects model and the Mantel-Haenszel statistic. RESULTS In total, 25 randomised controlled trials were identified. For intention-to-treat patients, the overall response rate was similar in patients receiving single fractions (1696 of 2818; 60%) and multiple fractions (1711 of 2799; 61%). Complete response rates were 620 of 2641 (23%) in the single fraction arm and 634 of 2622 (24%) in the multiple fraction arm. No significant difference was seen in overall or complete response rates. Pathological fracture did not favour either arm, but spinal cord compression trended towards favouring multiple fractions; however, neither was statistically significant (P = 0.72 and P = 0.13, respectively). Retreatment rates favoured patients in the multiple fraction arm, where the likelihood of requiring re-irradiation was 2.6-fold greater in the single fraction arm (95% confidence interval: 1.92-3.47; P < 0.00001). Repeated analyses excluding drop-out patients did not alter these findings. In general, no significant differences in acute toxicities were seen. CONCLUSION Overall and complete response rates were similar in both intention-to-treat and assessable patients. Single and multiple fraction regimens provided equal pain relief; however, significantly higher retreatment rates occurred in those receiving single fractions.
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Affiliation(s)
- E Chow
- Department of Radiation Oncology, Odette Cancer Centre, University of Toronto, Ontario, Canada.
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195
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Margariti A, Winkler B, Karamariti E, Tsai T, Zeng L, Hu Y, Xu Q. 20 Direct reprogramming fibroblasts into endothelial cells. Heart 2011. [DOI: 10.1136/heartjnl-2011-300920b.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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196
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Xiao Q, Pepe A, Wang G, Luo Z, Zeng L, Ye S, Xu Q. 51 PLA2g7 mediates smooth muscle cell differentiation from stem cells. Heart 2011. [DOI: 10.1136/heartjnl-2011-300920b.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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197
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Margariti A, Kirton JP, Yin X, Karamariti E, Mayr M, Hu Y, Zeng L, Xu Q. 21 Proteomic analysis of iPS and embryonic stem cells identifies alternate vascular cell differentiation properties. Heart 2011. [DOI: 10.1136/heartjnl-2011-300920b.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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198
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Caissie A, Nguyen J, Zhang L, Zeng L, Tsao M, Danjoux C, Barnes E, Sahgal A, Holden L, Chow E. Dexamethasone Toxicity and Quality of Life in Patients with Brain Metastases Treated with Whole Brain Radiotherapy. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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199
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Caissie A, Zeng L, Nguyen J, Zhang L, Jon F, Dennis K, Holden L, Culleton S, Koo K, Tsao M, Barnes E, Danjoux C, Sahgal A, Simmons C, Chow E. Assessment of health-related quality of life with the European Organization for Research and Treatment of Cancer QLQ-C15-PAL after palliative radiotherapy of bone metastases. Clin Oncol (R Coll Radiol) 2011; 24:125-33. [PMID: 21917431 DOI: 10.1016/j.clon.2011.08.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 07/08/2011] [Accepted: 08/30/2011] [Indexed: 10/17/2022]
Abstract
AIMS To assess health-related quality of life (HRQOL) after palliative radiotherapy for painful bone metastases using a palliative questionnaire (European Organization for Research and Treatment of Cancer QLQ-C15-PAL). MATERIALS AND METHODS Patients scheduled to receive palliative radiotherapy for painful bone metastases (n=178) completed the QLQ-C15-PAL questionnaire before treatment and at week 1, week 2, month 1 and month 2 after the first day of radiotherapy. A partial response (PR) or a complete response (CR) to radiotherapy was defined according to the International Consensus criteria. General linear regression was used to analyse changes in QOL in the entire cohort and within responders and non-responders to radiotherapy at all follow-up periods. RESULTS The overall radiotherapy response was 45% at week 1 (n=21) (41% PR, 4% CR), 62% at week 2 (n=28) (58% PR, 4% CR), 62% at month 1 (n=58) (60% PR, 2% CR) and 65% at month 2 (n=38) (60% PR, 5% CR). In general, a significant decrease in pain (P<0.0001), insomnia (P<0.0001) and constipation (P=0.004) was seen by month 1 after radiotherapy. In patients who responded to radiotherapy, overall QOL significantly improved by month 2 after radiotherapy (P=0.002). Radiotherapy responders also reported an improvement in emotional functioning together with a decrease in symptoms such as insomnia and constipation at month 1. No improvements were seen in any of the QLQ-C15-PAL scores for patients whose pain did not respond to radiotherapy. CONCLUSION Radiotherapy responders showed not only an improvement in pain, but also in HRQOL as assessed by QLQ-C15-PAL. As early as 1 week after radiotherapy for bone metastases, a pain relief response was reported by patients.
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Affiliation(s)
- A Caissie
- Rapid Response Radiotherapy Program, Department of Radiation Oncology, Odette Cancer Centre, University of Toronto, Ontario, Canada
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200
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Herold-Mende C, Campos B, Zeng L, DaoTrong P, Eckstein V, Maierbáurl H, Unterberg A. 8707 POSTER Expression and Regulation of AC133 and CD133 in Glioblastoma. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)72258-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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