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Qi Z, Luo X, Wu B, Shi H, Jin B, Wen Z. Contact force-guided catheter ablation for the treatment of atrial fibrillation: a meta-analysis of randomized, controlled trials. Braz J Med Biol Res 2016; 49:S0100-879X2016000300707. [PMID: 26840711 PMCID: PMC4763825 DOI: 10.1590/1414-431x20155127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 11/05/2015] [Indexed: 01/20/2023] Open
Abstract
Contact force (CF) sensing technology allows real-time monitoring during catheter
ablation for atrial fibrillation (AF). However, the effect of CF sensing technology
on procedural parameters and clinical outcomes still needs clarification. Because of
the inconsistent results thus far in this area, we performed a meta-analysis to
determine whether CF sensing technology can improve procedural parameters and
clinical outcomes for the treatment of AF. Studies examining the benefits of CF
sensing technology were identified in English-language articles by searching the
MEDLINE, Web of Science, and Cochrane Library databases (inception to May 2015). Ten
randomized, controlled trials involving 1834 patients (1263 males, 571 females) were
included in the meta-analysis (681 in the CF group, 1153 in the control group).
Overall, the ablation time was significantly decreased by 7.34 min (95%CI=-12.21 to
-2.46; P=0.003, Z test) in the CF group compared with the control group. CF sensing
technology was associated with significantly improved freedom from AF after 12 months
(OR=1.55, 95%CI=1.20 to 1.99; P=0.0007) and complications were significantly lower in
the CF group than in the control group (OR=0.50, 95%CI=0.29 to 0.87; P=0.01).
However, fluoroscopy time analysis showed no significantly decreased trend associated
with CF-guided catheter ablation (weighted mean difference: -2.59; 95%CI=-9.06 to
3.88; P=0.43). The present meta-analysis shows improvement in ablation time and
freedom from AF after 12 months in AF patients treated with CF-guided catheter
ablation. However, CF-guided catheter ablation does not decrease fluoroscopy
time.
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Cao CF, Wen Z. [A brief history of Beijing Shijitan(Century Altar) Hospital]. ZHONGHUA YI SHI ZA ZHI (BEIJING, CHINA : 1980) 2016; 46:34-38. [PMID: 27049744 DOI: 10.3760/cma.j.issn.0255-7053.2016.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Founded in 1914, the Jing-Han Railway Hospital has undergone through four different stages during its 100 years' transition, viz., from 1914 to 1949, from 1949 to 1979, from 1980 to 2003 and from 2004 to the present, with its title changing from Peking-Hankou Railway Hospital, Beijing Health Care Station, Peiping Railway Hospital, Beijing Railway General Hospital and today's Beijing Shijitan Hospital. As a railway hospital, in addition to offering services to Chinese railway health, it has also participated in many public welfare activities, such as major disaster rescues, important domestic medical services, the international medical assistance, hospitals' counterpart support, Lifeline Express and so on.In a sense, the establishment and development of the hospital are connected with Beijing Railway Health Services and is not only closely related with China's railway healthcare, but also to modern social transformation and changes.
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Liu W, Schild S, Chang J, Liao Z, Shen J, Stoker J, Wen Z, Wong W, Sahoo N, Herman M, Mohan R, Bues M. A Novel 4-D Robust Optimization Mitigates Interplay Effect in Intensity Modulated Proton Therapy for Lung Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.526] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Li J, Wu G, Wen Z, Zhang J, Lei H, Gui X, Lin F. White Matter Development is Potentially Influenced in Adolescents with Vertically Transmitted HIV Infections: A Tract-Based Spatial Statistics Study. AJNR Am J Neuroradiol 2015; 36:2163-9. [PMID: 26228880 DOI: 10.3174/ajnr.a4417] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Accepted: 02/25/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Convergent evidence indicates that HIV is associated with abnormal WM microstructure in adults. However, little is known about whether HIV affects WM development in adolescents. In this study, we used DTI to investigate the integrity of WM microstructure in adolescents with vertically transmitted HIV infections. MATERIALS AND METHODS Fifteen HIV-positive adolescents with vertically transmitted infections and 26 HIV-negative controls participated in this study. Whole-brain analysis of fractional anisotropy was performed by Tract-Based Spatial Statistics to localize abnormal WM regions between groups. VOI analysis was further performed to explore the changes in diffusivity indices in the regions with fractional anisotropy alterations. Correlation analyses were used to assess the relationship between fractional anisotropy alterations and clinical measures within the HIV-positive group. RESULTS Relative to HIV-negative controls, HIV-positive adolescents demonstrated significantly reduced fractional anisotropy in the corpus callosum, superior and posterior corona radiata, frontal and parietal WM, pre-/postcentral gyrus, and superior longitudinal fasciculus. In the affected regions, fractional anisotropy reductions were caused by an increase in radial diffusivity, and no changes were observed in axial diffusivity. Moreover, fractional anisotropy values in the bilateral frontal WM were negatively correlated with the duration of highly active antiretroviral therapy and were positively associated with the age at onset of highly active antiretroviral therapy. CONCLUSIONS These findings suggest that early HIV infections may affect WM development, especially in the frontal WM, corpus callosum, and corona radiata in adolescents, which may be associated with hypomyelination and demyelination. Moreover, WM integrity may serve as a potential new treatment target.
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Wen Z, Alvarez P, Ibbott G. SU-E-J-208: Feasibility Study On Using Small Plastic Phantoms for Auditing Radiation Output of MR-Linac Systems. Med Phys 2015. [DOI: 10.1118/1.4924294] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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An J, Zhao J, Su ZG, Wen Z, Xu DS. Microstructure and Mechanical Properties of ZTA Ceramic-Lined Composite Pipe Prepared by Centrifugal-SHS. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2015. [DOI: 10.1007/s13369-015-1747-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Wang J, Yang J, Hwang K, Wen Z, Court L, Ibbott G. SU-E-J-227: Evaluation of Residual Geometric Distortion in MRI for Treatment Planning. Med Phys 2015. [DOI: 10.1118/1.4924313] [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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Liu W, Schild S, Chang J, Liao Z, Wen Z, Shen J, Stoker J, Wong W, Sahoo N, Herman M, Mohan R, Bues M. SU-F-BRD-01: A Novel 4D Robust Optimization Mitigates Interplay Effect in Intensity-Modulated Proton Therapy for Lung Cancer. Med Phys 2015. [DOI: 10.1118/1.4925180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Hui C, Wen Z, Stemkens B, Tijssen R, van den Berg C, Beddar S. SU-F-303-02: Achieving 4D MRI in Regular Breathing Cycle with Extended Acquisition Time of Dynamic MR Images. Med Phys 2015. [DOI: 10.1118/1.4925229] [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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Wang J, Yang J, Marshall S, Wen Z, Court L, Ibbott G. SU-E-J-205: Dose Distribution Differences Caused by System Related Geometric Distortion in MRI-Guided Radiation Treatment System. Med Phys 2015. [DOI: 10.1118/1.4924291] [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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Jingqian W, Tsui T, Wei J, Wang Q, Zhang X, Wen Z, Zhu X, Frank S, Li H, Zhu L. SU-E-J-135: Feasibility of Using Quantitative Cone Beam CT for Proton Adaptive Planning. Med Phys 2015. [DOI: 10.1118/1.4924221] [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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62
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Wen Z, Hui C, Stemkens B, Tijssen R, van den Berg C, Beddar S. MO-F-CAMPUS-J-03: Sorting 2D Dynamic MR Images Using Internal Respiratory Signal for 4D MRI. Med Phys 2015. [DOI: 10.1118/1.4925449] [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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63
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Zhao Z, Jiang X, Kang C, Xiao Y, Hou C, Yu J, Wang R, Xiao H, Zhou T, Wen Z, Feng J, Chen G, Ma Y, Shen B, Li Y, Han G. Blockade of the T cell immunoglobulin and mucin domain protein 3 pathway exacerbates sepsis-induced immune deviation and immunosuppression. Clin Exp Immunol 2014; 178:279-91. [PMID: 24945079 DOI: 10.1111/cei.12401] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2014] [Indexed: 01/07/2023] Open
Abstract
Sepsis is a life-threatening condition, but the pathophysiological basis and biomarkers for the monitoring of sepsis and as targets for therapy remain to be determined. We have shown previously that T cell immunoglobulin and mucin domain protein 3 (Tim-3), a negative immune regulator, is involved in the physiopathology of sepsis, but the underlying mechanisms remain unclear. In the present study, we showed that Tim-3 signalling modulated the response patterns of both macrophages and T helper cells in sepsis. Blockade of the Tim-3 pathway exacerbated sepsis-induced proinflammatory macrophage responses and lymphocyte apoptosis during the early phase of sepsis, and enhanced the shift to anti-inflammatory responses for both macrophages and T helper cells during the late phase of sepsis. Tim-3 signalling was found to regulate CD80 and CD86 expression on macrophages both in vivo and in vitro. Co-culture of T cells with Tim-3 knock-down macrophages led to a biased T helper type 2 (Th2) response, partially explaining how Tim-3 signalling shapes inflammation patterns in vivo. Further studies on this pathway might shed new light on the pathogenesis of sepsis and suggest new approaches for intervention.
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Gu T, Wen Z, Xu S, Hua H, Zhang Z, Wen T, Fu Z, Lv X. Decreased levels of circulating sex hormones as a biomarker of lung cancer in male patients with solitary pulmonary nodules. Afr Health Sci 2014; 14:356-63. [PMID: 25320584 DOI: 10.4314/ahs.v14i2.10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND An early differentiation of malignant from benign solitary pulmonary nodules (SPNs) is essential for management and prognosis of lung cancer. OBJECTIVES Here we investigated whether measurement of circulating sex hormones could be useful for an early detection of malignancy among patients with SPNs. METHODS We recruited 47 patients with malignant SPNs 45 patients with benign SPNs, and 32 healthy persons. Testosterone, estradiol, and progesterone were measured. Carcinoembryonic antigen (CEA) as well as TNF-α, IL-1 and IL-6 were also measured. RESULTS We found that sex hormones were decreased significantly in patients with malignant SPNs, as compared to patients with benign SPNs and healthy controls (P<0.05). Sex hormones levels showed a trend to decline in patients with benign SPNs as compared to normal controls, but the difference was not statistically significant (P>0.05). CEA levels were only abnormally elevated in eight patients with lung adenocarcinoma. The inflammatory cytokines were remarkably higher in both patients than in normal controls. However, there was no statistical difference in these cytokines among patients. CONCLUSIONS The reduced sex hormones levels seemed to be uniquely associated with lung cancer. Therefore, measurement of sex hormones may have clinical potential in the diagnosis of malignancy in patients with SPNs.
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Harvey M, Pollard J, Wen Z, Gao S. SU-E-T-403: Measurement of the Neutron Ambient Dose Equivalent From the TrueBeam Linac Head and Varian 2100 Clinac. Med Phys 2014. [DOI: 10.1118/1.4888736] [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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Mathis M, Wen Z, Tailor R, Sawakuchi G, Flint D, Beddar S, Ibbott G. SU-E-T-368: Effect of a Strong Magnetic Field On Select Radiation Dosimeters. Med Phys 2014. [DOI: 10.1118/1.4888701] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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67
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Xu S, Wen Z, Jiang Q, Zhu L, Feng S, Zhao Y, Wu J, Dong Q, Mao J, Zhu Y. CD58, a novel surface marker, promotes self-renewal of tumor-initiating cells in colorectal cancer. Oncogene 2014; 34:1520-31. [PMID: 24727892 DOI: 10.1038/onc.2014.95] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 02/17/2014] [Accepted: 02/24/2014] [Indexed: 12/14/2022]
Abstract
Colorectal tumor-initiating cells (CT-ICs) have self-renewal capabilities and have an important role in tumorigenesis, metastasis, recurrence and treatment resistance in colorectal cancer. Multiple cell-surface molecules targeting CT-ICs, possibly representing different CT-IC subpopulations, have been reported. However, whether new surface markers exist, as well as the mechanisms by which the markers regulate self-renewal, remain unclear. In this study, we enriched a CT-IC population through a serum-free low-adhesion system in vitro. Within this population, we found that CD58 and CD44 were upregulated using a cDNA GeneChip, and CD44(high)CD58(high) cancer cells, the common existence of which was demonstrated by flow cytometry in multiple colon cancer cell lines and primary specimens, exhibited enhanced self-renewal ability, epithelial-mesenchymal transition ability and tumorigenicity, both in vitro and in vivo. Furthermore, activated CD58 upregulated the Wnt/β-catenin pathway and thus promoted self-renewal of CT-ICs; conversely, knockdown of CD58 significantly impaired sphere formation and tumor growth. With immunoprecipitation and western blotting approaches, CD58 was found to upregulate the Wnt pathway by degradation of Dickkopf 3. These results indicate that CD58 is a novel cell-surface marker that functionally regulates self-renewal of CT-ICs, which may provide an intriguing therapeutic target for the efficient killing and elimination of CT-ICs.
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Jiang QG, Ao ZM, Li S, Wen Z. Density functional theory calculations on the CO catalytic oxidation on Al-embedded graphene. RSC Adv 2014. [DOI: 10.1039/c4ra01908c] [Citation(s) in RCA: 163] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The energy barrier of the CO oxidation for the rate limiting step on Al-embedded graphene is only 0.32 eV.
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Wen Z, Lei Z, Jin-An M, Xue-Zhen L, Xing-Nan Z, Xiu-Wen D. The inhibitory role of miR-214 in cervical cancer cells through directly targeting mitochondrial transcription factor A (TFAM). EUR J GYNAECOL ONCOL 2014; 35:676-682. [PMID: 25556274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Mitochondrial transcription factor A (TFAM) is a high-mobility group (HMG) protein and acts as a key regulator in mitochondrial DNA (mtDNA) replication, transcription, and inheritance. Accumulating evidence has demonstrated that TFAM plays an important role in tumorigenesis; however, the regulatory mechanism of TFAM in cervical cancer has not been revealed. In the current study, the au- thors found that with malignancy of cervical cancer, the protein expression of TFAM was gradually increased, while the expression of miRNA-214 was gradually downregulated. They further identified that TFAM is a target of miR-214. Forced overexpression of miRNA-214 significantly suppressed cell proliferation, cell cycle progression, colony-formation, and migration of cervical cancer Hela and Caski cells; however, upregulation of TFAM notably promoted cell proliferation, cell cycle progression, colony-formation, and migration of Hela and Caski cells. The authors further showed that miR-214 enhanced the susceptibility of Hela and Caski cells to the chemotherapy drug cisplatin. In conclusion, the current study provides a new sight for the regulatory pattern of miRNA-214 and TFAM in cervical cancer in vitro, indicating that miRNA-214 and MTFA may become important candidates for developing promising therapeutic strategies for the treatment of cervical cancer.
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Wen Z, Liao Q, Hu Y, You L, Zhou L, Zhao Y. A spheroid-based 3-D culture model for pancreatic cancer drug testing, using the acid phosphatase assay. Braz J Med Biol Res 2013; 46:634-42. [PMID: 23903680 PMCID: PMC3859338 DOI: 10.1590/1414-431x20132647] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 04/15/2013] [Indexed: 01/29/2023] Open
Abstract
Current therapy for pancreatic cancer is multimodal, involving surgery and
chemotherapy. However, development of pancreatic cancer therapies requires a
thorough evaluation of drug efficacy in vitro before animal
testing and subsequent clinical trials. Compared to two-dimensional culture of
cell monolayer, three-dimensional (3-D) models more closely mimic native
tissues, since the tumor microenvironment established in 3-D models often plays
a significant role in cancer progression and cellular responses to the drugs.
Accumulating evidence has highlighted the benefits of 3-D in
vitro models of various cancers. In the present study, we have
developed a spheroid-based, 3-D culture of pancreatic cancer cell lines
MIAPaCa-2 and PANC-1 for pancreatic drug testing, using the acid phosphatase
assay. Drug efficacy testing showed that spheroids had much higher drug
resistance than monolayers. This model, which is characteristically reproducible
and easy and offers rapid handling, is the preferred choice for filling the gap
between monolayer cell cultures and in vivo models in the
process of drug development and testing for pancreatic cancer.
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Harvey M, Pollard J, Wen Z, Gao S. SU-E-T-265: Measurement of Secondary Neutrons Produced in the (gamma,n) Reaction From the TrueBeam Linac Head. Med Phys 2013. [DOI: 10.1118/1.4814700] [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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Kutlay S, Kurultak I, Nergizoglu G, Erturk S, Karatan O, Azevedo P, Pinto CT, Pereira CM, Marinho A, Vanmassenhove J, Hoste E, Glorieux G, Dhondt A, Vanholder R, Van Biesen W, Rei S, Aleksandrova I, Kiselev V, Ilynskiy M, Berdnikov G, Marchenkova L, Vanmassenhove J, Hoste E, Glorieux G, Dhondt A, Vanholder R, Van Biesen W, Daher EF, Vieira APF, Souza JB, Falcao FS, Costa CR, Fernandes AACS, Mota RMS, Lima RSA, Silva Junior GB, Ulusal Okyay G, Erten Y, Er R, Aybar M, Inal S, Tekbudak M, Aygencel G, Onec K, Bali M, Sindel S, Soto K, Fidalgo P, Papoila AL, Vanmassenhove J, Hoste E, Glorieux G, Dhondt A, Vanholder R, Van Biesen W, Lentini P, Zanoli L, Granata A, Contestabile A, Basso A, Berlingo G, de Cal M, Pellanda V, Dell'Aquila R, Fortrie G, Stads S, van Bommel J, Zietse R, Betjes MG, Berrada A, Arias C, Riera M, Orfila MA, Rodriguez E, Barrios C, Peruzzi L, Chiale F, Camilla R, Martano C, Cresi F, Bertino E, Coppo R, Klimenko A, Villevalde S, Efremovtseva M, Kobalava Z, Pipili C, Ioannidou S, Kokkoris S, Poulaki S, Tripodaki ES, Parisi M, Papastylianou A, Nanas S, Wang YN, Cheng H, Chen YP, Wen Z, Li X, Shen P, Zou Y, Lu Y, Ma X, Chen Y, Ren H, Chen X, Chen N, Yue T, Cheng H, Chen YP, Elmamoun S, Wodeyar H, Goldsmith C, Abraham A, Wootton A, Ahmed S, Hill C, Curtis S, Miller A, Hine T, Stevens KK, Patel RK, Mark PB, Delles C, Jardine AG, Wilflingseder J, Heinzel A, Mayer P, Perco P, Kainz A, Mayer B, Oberbauer R, Huang TM, Wu VC, Park DJ, Bae EJ, Kang YJ, Cho HS, Chang SH, Lentini P, Zanoli L, Granata A, Contestabile A, Berlingo G, Basso A, Pellanda V, de Cal M, Stramana R, Cognolato D, Baiocchi M, Dell'Aquila R, Chiella BM, Pilla C, Balbinotto A, Antunes VH, Heglert A, Collares FM, Thome FS, Gjyzari A, Thereska N, Xhango O, Xue J, Chen MC, Wang L, Chen YJ, Sun XZ, An WS, Kim ES, Son YK, Kim SE, Kim KH, Oh YJ, Tsai HB, Ko WJ, Chao CT, Fortrie G, Stads S, Aarnoudse AJL, Zietse R, Betjes MG, Peride I, Radulescu D, Niculae A, Ciocalteu A, Checherita AI, Kao CC, Wang CY, Lai CF, Huang TM, Chen HH, Wu VC, Ko WJ, Wu KD, Klaus F, Goldani JC, Cantisani G, Zanotelli ML, Carvalho L, Klaus D, Garcia VD, Keitel E, Hussaini SM, Rao PN, Kul A, Ye N, Zhang Y, Cheng H, Chen YP, Baines R, Westacott R, Trew J, Kirtley J, Selby N, Carr S, Xu G, Steffgen J, Blaschke S, Brun-Schulte-Wissing N, Pagel P, Huber F, Mapes J, Jaehnige A, Pestel S, Deray G, Rouviere O, Bacigalupo L, Maes B, Hannedouche T, Vrtovsnik F, Rigothier C, Billiouw JM, Campioni P, Marti-Bonmati L, Gao YM, Li D, Cheng H, Chen YP, Woo S, Lee J, Noh H, Kwon SH, Han DC, Hetherington L, Valluri A, McQuarrie E, Fleming S, Geddes C, Bell S, MacKinnon B, Bell S, Patton A, Sneddon J, Donnan P, Vadiveloo T, Marwick C, Bennie M, Davey P, Yasuda H, Tsuji N, Tsuji T, Iwakura T, Ohashi N, Kato A, Fujigaki Y, Sasaki S, Kawarazaki H, Shibagaki Y, Kimura K, Lingaraju U, Rajanna S, Radhakrishnan H, Parekh A, Sreedhar CG, Sarvi R, Rainone F, Merlino L, Ritchie JP, Kalra PA, Daher EF, Vieira APF, Jacinto CN, Abreu KLS, Silva Junior GB, Neves M, Baptista JP, Rodrigues L, Pinho J, Teixeira L, Pimentel J, Gonzalez Sanchidrian S, Rangel Hidalgo G, Cebrian Andrada C, Deira Lorenzo J, Marin Alvarez J, Garcia-Bernalt Funes V, Gallego Dominguez S, Labrador Gomez P, Castellano Cervino I, Novillo Santana R, Gomez-Martino Arroyo J, Kim Y, Choi BS, Kim YO, Yoon SA, Lin MC, Wu VC, Ko WJ, Wu KD, Wang WJ, Melo MJ, Lopes JA, Raimundo M, Fragoso A, Antunes F, Martin-Moreno PL, Varo N, Restituto P, Sayon-Orea C, Garcia-Fernandez N, Leite Filho NCV, Souza LEO, Cavalcante RM, Silva Junior GB, Morais BM, Leite TT, Silva SL, Kubrusly M, Daher EF, Jung YS, Kim YN, Shin HS, Rim H, Bentall A, Al-Baaj F, Williamson S, Cheshire S, Jelakovic M, Ivkovic V, Laganovic M, Karanovic S, Pecin I, Premuzic V, Vukovic Lela I, Vrdoljak A, Fucek M, Cvitkovic A, Juric D, Bozina N, Bitunjac M, Leko N, Abramovic Baric M, Matijevic V, Jelakovic B, Ullah A, Exarchou K, Archer T, Anijeet H, Brown R, Ahmed S, Zhang Y, Ye N, Cheng H, Cheng YP, Rocha JCG, Gushiken da Silva T, de Castro PF, Kioroglo PS, Branco Martins JP, Tzanno-Martins C, Biesenbach P, Luf F, Fleischmann E, Grunberger T, Druml W, Gaipov A, Turkmen K, Toker A, Solak Y, Cicekler H, Ucar R, Kilicaslan A, Gormus N, Tonbul HZ, Yeksan M, Turk S, Monteburini T, Cenerelli S, Santarelli S, Boggi R, Tazza L, Bossola M, Ferraresi M, Merlo I, Giovinazzo G, Quercia AD, Gai M, Leonardi G, Anania P, Guarena C, Cantaluppi V, Pacitti A, Biancone L, Hissa PNG, Daher EDF, Liborio AB, Thereza BMF, Mendes CCP, Sousa ARO. AKI - human studies. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sun J, Liu W, Li L, Chen J, Wu M, Zhang Y, Leung AYH, Zhang W, Wen Z, Liao W. Suppression of Pu.1 function results in expanded myelopoiesis in zebrafish. Leukemia 2013; 27:1913-7. [PMID: 23455395 DOI: 10.1038/leu.2013.67] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Gao EJ, Wang B, Lin L, Sun TD, Wen Z, Liu SH, Wang Y, Wang RS, Zhang Y, Zhang M, Zhang YX, Zhu MC, Liu L. Synthesis, crystal structure, and interaction with DNA of a novel coordination polymer: {[Cd(Pmal)(Bipy)] · 4H2O} n. RUSS J COORD CHEM+ 2012. [DOI: 10.1134/s1070328412040045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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75
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Wen Z, Xu L, Xu W, Xiong S. Production of anti-double-stranded DNA antibodies in activated lymphocyte derived DNA induced lupus model was dependent on CD4+ T cells. Lupus 2012; 21:508-16. [DOI: 10.1177/0961203311434940] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Our previous study demonstrated that activated lymphocyte derived DNA (ALD-DNA) could function as an autoantigen to induce production of anti-double-stranded DNA (anti-dsDNA) antibodies in syngeneic BALB/c mice. Here we carefully evaluated the potential role of T cells in the induction of anti-dsDNA antibody. We demonstrated that ALD-DNA could effectively induce production of anti-dsDNA antibodies in vivo and in vitro. In contrast, ALD-DNA could not induce the generation of anti-dsDNA antibodies in nude mice. We further showed that in vivo depletion of CD3+ T cells blocked the induction of anti-dsDNA antibodies in BALB/c mice. Notably, we demonstrated that CD4+ but not CD8+ T cells conferred ALD-DNA to induce anti-dsDNA antibodies. Finally, we demonstrated that adoptive transfer of CD4+ T cells could rescue ALD-DNA induced anti-dsDNA antibodies in nude mice. Our results suggested that T helper cells were required for ALD-DNA to induce anti-dsDNA antibodies. These findings could further our understanding about the immunogenic properties of DNA and throw new light on SLE pathogenesis.
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Gao EJ, Zhang Y, Wen Z, Lin L, Dai L, Sun TD, Zhu MC, Wang Y. Synthesis and crystal structure characterization of complex [Cd(Bipy)2(L)] · 10H2O (H2L = 2,6-pyridinedicarboxylic acid). RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s1070328411110042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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77
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Wen Z, Sahoo N. SU-E-T-360: A Novel Procedure to Determine the Dose Output Change with Spread Out Bragg Peak Width and Range Shift in Passively Scattered Proton Beams. Med Phys 2011. [DOI: 10.1118/1.3612314] [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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78
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Gao EJ, Wang Y, Zhu MC, Liu L, Wen Z, Gao XN, Sun TD, Liu SH, Su M, Zhang YX, Zhang M, Zhang Y. Synthesis and crystal structure of a coordination polymer {[Cu2(L)2(Phen)2] · 8H2O} n. RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s107032841104004x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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79
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Du F, Birong D, Changquan H, Hongmei W, Yanling Z, Wen Z, Li L. Association of osteoporotic fracture with smoking, alcohol consumption, tea consumption and exercise among Chinese nonagenarians/centenarians. J Nutr Health Aging 2011; 15:327-31. [PMID: 21528157 DOI: 10.1007/s12603-010-0270-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To observe the association of osteoporotic fracture with habits of smoking, alcohol consumption, tea consumption and exercise among very old people. DESIGN AND SETTING A cross-sectional study conducted in Dujiangyan Sichuan China. PARTICIPANTS 703 unrelated Chinese nonagenarians and centenarians (67.76% women, mean age 93.48 years) resident in Dujiangyan. MEASUREMENTS Medical history of osteoporosis and the statement of fracture and habits (current and former) of smoking, alcohol consumption, tea consumption and exercise were collected. RESULTS In women, subjects with current or former habit of alcohol consumption had significantly higher prevalence osteoporotic fracture than those without this habit; but subjects with former habit of exercise had significantly lower prevalence osteoporotic fracture than those without this habit. However, in men, there was no significant difference in prevalence of these habits between subjects with and without osteoporotic fracture. After adjust for age, gender, sleep habits educational levels, religion habits and temperament, we found that former habit of alcohol consumption had a significant odds ratio (OR=2.473 95% CI (1.074, 5.526)) for osteoporotic fracture. CONCLUSIONS In summary, among nonagenarians and centenarians, among habits (current and former) of smoking, alcohol consumption, tea consumption and exercise, there seems to be significant association of osteoporotic fracture only with current or former habits of alcohol consumption, former habit of exercise. The habit of alcohol consumption might be associated with a greater risk of osteoporotic fracture, but the former habit of exercise might be associated with a lower risk of osteoporotic fracture.
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Gao EJ, Liu SH, Zhang M, Lin L, Wang RS, Sun TD, Wang Y, Wen Z. Synthesis and molecular characterization of the coordination polymer [Pb(2,2′-Bipy)(NO3)2(H2O)] n. RUSS J COORD CHEM+ 2011. [DOI: 10.1134/s1070328411030043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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81
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Wiersma R, Wen Z, Sadinski M, Kang H. Development of Frameless SRS using Real-Time 6D Facial Surface Monitoring and Continuous Adaptive Head Motion Correction. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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82
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Wu T, Wen Z, Yenice K. Assessment of Dose Calculation Accuracy of a Commercially Available Monte Carlo Algorithm for Plan Optimization using Oblique Electron Fields at Extended SSDs. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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83
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Gao EJ, Wen Z, Zhu MC, Wang Y, Liu FC, Wang L, Su M, Zhang YX, Sun TD, Liu SH, Gao XN, Zhang Y. Synthesis and crystal structure characterization of supramolecular complex [Cd2(Bipy)2(L)2(H2O)2] · 9H2O (H2L = 2,2′-bipyridyl-6,6′-dicarboxylic acid). RUSS J COORD CHEM+ 2010. [DOI: 10.1134/s1070328410100040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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84
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Liu F, Zou X, Sadovova N, Zhang X, Shi L, Guo L, Qian F, Wen Z, Patterson TA, Hanig JP, Paule MG, Slikker W, Wang C. Changes in gene expression after phencyclidine administration in developing rats: a potential animal model for schizophrenia. Int J Dev Neurosci 2010; 29:351-8. [PMID: 20691775 DOI: 10.1016/j.ijdevneu.2010.07.234] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Revised: 05/21/2010] [Accepted: 07/27/2010] [Indexed: 10/19/2022] Open
Abstract
Repeated administration of phencyclidine (PCP), an N-methyl-d-aspartate (NMDA) receptor antagonist, during development, may result in neuronal damage that leads to behavioral deficits in adulthood. The present study examined the potential neurotoxic effects of PCP exposure (10mg/kg) in rats on postnatal days (PNDs) 7, 9 and 11 and the possible underlying mechanism(s) for neurotoxicity. Brain tissue was harvested for RNA extraction and morphological assessments. RNA was collected from the frontal cortex for DNA microarray analysis and quantitative RT-PCR. Gene expression profiling was determined using Illumina Rat Ref-12 Expression BeadChips containing 22,226 probes. Based on criteria of a fold-change greater than 1.4 and a P-value less than 0.05, 19 genes including NMDAR1 (N-methyl-d-aspartate receptor) and four pro-apoptotic genes were up-regulated, and 25 genes including four anti-apoptotic genes were down-regulated, in the PCP-treated group. In addition, the schizophrenia-relevant genes, Bdnf (Brain-derived neurotrophic factor) and Bhlhb2 (basic helix-loop-helix domain containing, class B, 2), were significantly different between the PCP and the control groups. Quantitative RT-PCR confirmed the microarray results. Elevated neuronal cell death was further confirmed using Fluoro-Jade C staining. These findings support the hypothesis that neurodegeneration caused by PCP occurs, at least in part, through the up-regulation of NMDA receptors, which makes neurons possessing these receptors more vulnerable to endogenous glutamate. The changes in schizophrenia-relevant genes after repeated PCP exposure during development may provide important information concerning the validation of an animal model for this disorder.
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Wen Z, Yenice K, Farrey K, Wiersma R. Development of a Gated Frameless Stereotactic Radiosurgery/Radiotherapy System with Real-time 3D Position Monitoring and Adaptive Head Motion Compensation. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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86
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Wen Z, Yenice K, Farrey K, Wiersma R. SU-FF-T-529: A Feasibility Study On Frameless Gated Head Stereotactic Radiosurgery/Radiotherapy Via Real-Time Optical Position Monitoring and Adaptive Head Motion Compensation. Med Phys 2009. [DOI: 10.1118/1.3182027] [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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87
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Sun ZY, Li H, Zhang MJ, Zhao H, Xu W, Xiao H, Guo YX, Wen Z, Yin GQ. Supernumerary nostril. A rare congenital nasal deformity: case report and literature review. Eur Surg Res 2009; 42:245-8. [PMID: 19321958 DOI: 10.1159/000209400] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Accepted: 01/28/2009] [Indexed: 11/19/2022]
Abstract
Supernumerary nostril is one of the rarest congenital nasal deformities, and only a limited number of articles have been published so far on this topic. We present a typical case of a supernumerary nostril located above the left nostril in a male infant. We describe the appearance, physical examination, surgical procedure and histopathological examination of this case.
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88
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Rupasinghe SG, Wen Z, Chiu TL, Schuler MA. Helicoverpa zea CYP6B8 and CYP321A1: different molecular solutions to the problem of metabolizing plant toxins and insecticides. Protein Eng Des Sel 2007; 20:615-24. [DOI: 10.1093/protein/gzm063] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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89
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Wen Z, Li B, He X, Sun Y, Zhang H, Tang X, Hu J, Wang H, He S. SIGNAL TRANSDUCTION PATHWAYS OF INTERLEUKIN-6 INDUCING TISSUE FACTOR EXPRESSION IN VASCULAR ENDOTHELIAL CELLS. J Thromb Haemost 2007. [DOI: 10.1111/j.1538-7836.2007.tb01777.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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90
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Diao Y, Ma D, Wen Z, Yin J, Xiang J, Li M. Using pseudo amino acid composition to predict transmembrane regions in protein: cellular automata and Lempel-Ziv complexity. Amino Acids 2007; 34:111-7. [PMID: 17520325 DOI: 10.1007/s00726-007-0550-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2007] [Accepted: 03/21/2007] [Indexed: 10/23/2022]
Abstract
Transmembrane (TM) proteins represent about 20-30% of the protein sequences in higher eukaryotes, playing important roles across a range of cellular functions. Moreover, knowledge about topology of these proteins often provides crucial hints toward their function. Due to the difficulties in experimental structure determinations of TM protein, theoretical prediction methods are highly preferred in identifying the topology of newly found ones according to their primary sequences, useful in both basic research and drug discovery. In this paper, based on the concept of pseudo amino acid composition (PseAA) that can incorporate sequence-order information of a protein sequence so as to remarkably enhance the power of discrete models (Chou, K. C., Proteins: Structure, Function, and Genetics, 2001, 43: 246-255), cellular automata and Lempel-Ziv complexity are introduced to predict the TM regions of integral membrane proteins including both alpha-helical and beta-barrel membrane proteins, validated by jackknife test. The result thus obtained is quite promising, which indicates that the current approach might be a quite potential high throughput tool in the post-genomic era. The source code and dataset are available for academic users at liml@scu.edu.cn.
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Jin M, Shen L, Hu B, Yu J, Wen Z, Su Y, Wang B, Chen L, Ying H, Chen L. Mature data on capecitabine (X) + fractionated cisplatin (P) as first-line therapy in patients (pts) with advanced gastric carcinoma (AGC). J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.4075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4075 Background: Gastric cancer is one of the most common malignancies in Asia with an adjusted mortality rate above 20/100,000 population. 5-FU + fractionated P is a standard treatment for AGC in China. In a Korean study by Kim et al., X + P produced a response rate of 55% in pts with previously untreated AGC. Here we present mature efficacy/safety results in Chinese pts with AGC. Methods: 154 pts of a planned population of 120 pts were enrolled between Jun 2002 and Aug 2004. All had measurable AGC (WHO), Karnofsky performance status ≥60, adequate bone marrow, renal and hepatic functions. Prior radiotherapy or adjuvant chemotherapy was permitted. Pts received × 1000 mg/m2 orally bid on days 1–14 + P 20mg/m2/day i.v. on days 1–5, every 3 weeks for 6 cycles. The primary endpoint was time to disease progression (TTP). Results: Baseline characteristics of the 141 evaluable pts (104 men, 37 women) are: median age 54 years (range 23–80), main sites of metastases: lymph nodes 45%, liver 40%, stomach 18%, skin 6%, other 6%, lung 5%, abdomen 4%. The overall response rate was 36%, including 13 complete responses and 38 partial responses. After a median follow-up period of 12 months, the median TTP is 9 months (95% CI, 9–12 months) and the median overall survival is 12 months (95% CI, 12–15 months). Median treatment duration was 6 cycles (range 3–6). The most common treatment-related clinical adverse events (all grades >5%) were: hand-foot syndrome (HFS) 25%, leucopenia 13%, and SGOT abnormality 12%. The most commongrade 3 adverse events were SGPT abnormality 3%, HFS 2%, and anemia 2%. There were no grade 4 adverse events. Most grade 3 adverse events improved or resolved after treatment or interruption except in 1 pt with anemia who withdrew after 2 cycles. Conclusions: X combined with fractionated P is highly active and very well tolerated as first-line treatment for AGC, with comparable results to 5-FU + P. No significant financial relationships to disclose.
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Guo YZ, Li M, Lu M, Wen Z, Wang K, Li G, Wu J. Classifying G protein-coupled receptors and nuclear receptors on the basis of protein power spectrum from fast Fourier transform. Amino Acids 2006; 30:397-402. [PMID: 16773242 DOI: 10.1007/s00726-006-0332-z] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2005] [Accepted: 01/04/2006] [Indexed: 10/24/2022]
Abstract
As the potential drug targets, G-protein coupled receptors (GPCRs) and nuclear receptors (NRs) are the focuses in pharmaceutical research. It is of great practical significance to develop an automated and reliable method to facilitate the identification of novel receptors. In this study, a method of fast Fourier transform-based support vector machine was proposed to classify GPCRs and NRs from the hydrophobicity of proteins. The models for all the GPCR families and NR subfamilies were trained and validated using jackknife test and the results thus obtained are quite promising. Meanwhile, the performance of the method was evaluated on GPCR and NR independent datasets with good performance. The good results indicate the applicability of the method. Two web servers implementing the prediction are available at http://chem.scu.edu.cn/blast/Pred-GPCR and http://chem.scu.edu.cn/blast/Pred-NR.
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Wen Z, Li M, Li Y, Guo Y, Wang K. Delaunay triangulation with partial least squares projection to latent structures: a model for G-protein coupled receptors classification and fast structure recognition. Amino Acids 2006; 32:277-83. [PMID: 16729188 DOI: 10.1007/s00726-006-0341-y] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2006] [Accepted: 03/23/2006] [Indexed: 11/26/2022]
Abstract
As an important transmembrane protein family in eukaryon, G-protein coupled receptors (GPCRs) play a significant role in cellular signal transduction and are important targets for drug design. However, it is very difficult to resolve their tertiary structure by X-ray crystallography. In this study, we have developed a Delaunay model, which constructs a series of simplexes with latent variables to classify the families of GPCRs and projects unknown sequences to principle component space (PC-space) to predict their topology. Computational results show that, for the classification of GPCRs, the method achieves the accuracy of 91.0 and 87.6% for Class A, more than 80% for the other three classes in differentiating GPCRs from non-GPCRs and 70% for discriminating between four major classes of GPCR, respectively. When recognizing the structure of GPCRs, all the N-terminals of sequences can be determined correctly. The maximum accuracy of predicting transmembrane segments is achieved in the 7th transmembrane segment of Rhodopsin, which is 99.4%, and the average error is 2.1 amino acids, which is the lowest in all of the segments prediction. This method could provide structural information of a novel GPCR as a tool for experiments and other algorithms of structure prediction of GPCRs. Academic users should send their request for the MATLAB program for classifying GPCRs and predicting the topology of them at liml@scu.edu.cn .
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Zhang X, Walling DE, Yang Q, He X, Wen Z, Qi Y, Feng M. 137Cs budget during the period of 1960s in a small drainage basin on the Loess Plateau of China. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2006; 86:78-91. [PMID: 16144731 DOI: 10.1016/j.jenvrad.2005.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2004] [Revised: 07/12/2005] [Accepted: 07/12/2005] [Indexed: 05/04/2023]
Abstract
A sediment profile with a thickness of 28.12 m in a failed reservoir in a small catchment of the Yuntaishan Gully in the Loess Plateau of China consisted of 44 flood couplets deposited during the period from 1960 to 1970 with total volume of 2.36 x 10(6)m(3). Specific sediment yields for a flood event varied from 300 t km(-2) to 14,400 t km(-2) and annual sediment yields varied from 2500 t km(-2) in 1966 to 40,000 t km(-2) in 1964 with a mean value of 12,700 t km(-2)a(-1) for the period. Average annual (137)Cs concentrations of the sediments increased from 0.92 Bq kg(-1) in 1960 to 4.82 Bq kg(-1) in 1963, then decreased to 1.53 Bq kg(-1) in 1970. The total (137)Cs activity in the reservoir sediments was 9.22 x 10(9) Bq, which accounted for 31.9% of the total (137)Cs fallout precipitation of 2.89 x 10(10) Bq within the catchment during the period. The proportion of the (137)Cs loss from the catchment to the (137)Cs fallout precipitation within the catchment in a year varied between 8.01% and 66.8%, and it was 20.9% for the peak (137)Cs deposition year of 1963 and 52.0% in 1964. By analysis of the (137)Cs budget in the catchment for the (137)Cs peak precipitation period from 1962 to 1964, the (137)Cs surface enrichment coefficient Gamma should be much less than 0.23. And for calculation of soil losses on the cultivated land in the inter-gully area by using the Mass Balance Model II, the value of Gamma should be 0.05-0.1.
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Choi MC, Santangelo CD, Pelletier O, Kim JH, Kwon SY, Wen Z, Li Y, Pincus PA, Safinya CR, Kim MW. Direct Observation of Biaxial Confinement of a Semiflexible Filament in a Channel. Macromolecules 2005. [DOI: 10.1021/ma051348n] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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98
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Liu Y, Wen Z, Liao W, Liu C, Chen S. Optimization of the Process for the Production ofL(+)-Lactic Acid from Cull Potato byRhizopus oryzae. Eng Life Sci 2005. [DOI: 10.1002/elsc.200520079] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Jin M, Shen L, Hu B, Yu J, Wen Z, Su Y, Wang B, Chen L, Ying H, Chen L. Capecitabine (X) combined with fractionated cisplatin (C) as first-line therapy in Chinese patients (pts) with advanced gastric carcinoma (AGC). J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.4053] [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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100
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Fahrig R, Wen Z, Ganguly A, DeCrescenzo G, Rowlands JA, Stevens GM, Saunders RF, Pelc NJ. Performance of a static-anode/flat-panel x-ray fluoroscopy system in a diagnostic strength magnetic field: A truly hybrid x-ray/MR imaging system. Med Phys 2005; 32:1775-84. [PMID: 16013735 DOI: 10.1118/1.1915016] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Minimally invasive procedures are increasing in variety and frequency, facilitated by advances in imaging technology. Our hybrid imaging system (GE Apollo flat panel, custom Brand x-ray static anode x-ray tube, GE Lunar high-frequency power supply and 0.5 T Signa SP) provides both x-ray and MR imaging capability to guide complex procedures without requiring motion of the patient between two distant gantries. The performance of the x-ray tube in this closely integrated system was evaluated by modeling and measuring both the response of the filament to an externally applied field and the behavior of the electron beam for field strengths and geometries of interest. The performance of the detector was assessed by measuring the slanted-edge modulation transfer function (MTF) and when placed at zero field and at 0.5 T. Measured resonant frequencies of filaments can be approximated using a modified vibrating beam model, and were at frequencies well below the 25 kHz frequency of our generator for our filament geometry. The amplitude of vibration was not sufficient to cause shorting of the filament during operation within the magnetic field. A simple model of electrons in uniform electric and magnetic fields can be used to estimate the deflection of the electron beam on the anode for the fields of interest between 0.2 and 0.5 T. The MTF measured at the detector and the DQE showed no significant difference inside and outside of the magnetic field. With the proper modifications, an x-ray system can be fully integrated with a MR system, with minimal loss of image quality. Any x-ray tube can be assessed for compatibility when placed at a particular location within the field using the models. We have also concluded that a-Si electronics are robust against magnetic fields. Detailed knowledge of the x-ray system installation is required to provide estimates of system operation.
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