401
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Shin T, Sim M, Jo I, Choi J, Song H, Jeong Y, Choi S, Hahn J, Gwon H. 50: The Effectiveness of Using Percutaneous Cardiopulmonary Support in Cardiopulmonary Arrest and Postresuscitation Care. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.06.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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402
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Song H, Yu J, Lu J, Bai T, Ma L, Fu Z, Kong F. Is there a Role for [18F]2-Fluoro-2-Deoxyglucose Positron Emission Tomography/Computed Tomography (FDG-PET/CT) in Predicting Radiation Pneumonitis. Int J Radiat Oncol Biol Phys 2008. [DOI: 10.1016/j.ijrobp.2008.06.585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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403
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Koessler T, Oestergaard MZ, Song H, Tyrer J, Perkins B, Dunning AM, Easton DF, Pharoah PDP. Common variants in mismatch repair genes and risk of colorectal cancer. Gut 2008; 57:1097-101. [PMID: 18364438 DOI: 10.1136/gut.2007.137265] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
BACKGROUND AND AIMS The mismatch repair (MMR) genes are in charge of maintaining genomic integrity. Mutations in the MMR genes are at the origin of a familial form of colorectal cancer (CRC). This syndrome accounts for only a small proportion of the excess familial risk of CRC. The characteristics of the alleles that account for the remainder of cases are unknown. To assess the putative associations between common variants in MMR genes and CRC, we performed a genetic case-control study using a single-nucleotide polymorphism (SNP) tagging approach. PATIENTS AND METHODS A total of 2299 cases and 2284 unrelated controls were genotyped for 68 tagging SNPs in seven MMR genes (MLH1, MLH3, MSH2, MSH3, MSH6, PMS1 and PMS2). Genotype frequencies were measured in cases and controls and analysed using univariate analysis. Haplotypes were constructed and analysed using logistic regression. We also carried out a two-locus interaction analysis and a global test analysis. RESULTS Genotype frequencies were found to be marginally different in cases and controls for MSH3 rs26279 with a rare homozygote OR = 1.31 [95% confidence interval (CI) 1.05 to 1.62], p(trend) = 0.04. We found a rare MLH1 (frequency <5%) haplotype, increasing the risk of colorectal cancer: (OR = 9.76; 95% CI, 1.25 to 76.29; p = 0.03). The two-locus interaction analysis has exhibited signs of interaction between SNPs located in genes MSH6 and MSH2. Global testing has showed no evidence of interaction. CONCLUSION It is unlikely that common variants in MMR genes contribute significantly to colorectal cancer.
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Hobbs R, Song H, Sgouros G. Poster - Thurs Eve-11: Quantitative imaging of 213Bi alpha-emitter with a beta-imager. Med Phys 2008; 35:3403. [PMID: 28512796 DOI: 10.1118/1.2965930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Targeted alpha-particle emitter therapy is emerging as a promising approach for treating metastatic cancer. An understanding of the biodistribution of targeted alpha-emitters at the cell level is important in evaluating potential efficacy and toxicity. This is best accomplished by autoradiography of tissue samples, ex vivo. We have investigated the feasibility of using a high resolution, quantitative beta-imager (Biospace Mesures β-Imager) to detect the short-lived alpha-particle emitter, Bismuth-213 (213Bi). The advantages of this detector include: shorter acquisition time than film-based autoradiography, which is critical for an isotope with such a short half-life; high resolution; and data acquisition in list mode. While our interest in 213Bi lies in the α, the decay chain includes high energy β- particles, enabling this study. Published studies using the β-Imager show predominantly qualitative results, with the quantitative depending on long exposure time or direct comparisons. At low count rate the detector auto-regulates by varying the HV, directly affecting the results. We imaged a phantom prepared from 213Bi in 5% gelatin. We plot only the results in a narrow HV range and fit an exponential decay function to obtain a half-life close to the expected value. We plot the ratio of the exponential fit to the measured count rate value against HV for all count rates and find a functional correlation between HV and count rate. A similar correction for gas flow ratio variations is also applied. As the remaining fluctuations conform to Gaussian statistics, this suggests that we have successfully calibrated 213Bi for future studies.
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405
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Song H, Bowsher J, Yin F. SU-GG-T-38: Tracking of Brachytherapy Source Position Using Emission Imaging. Med Phys 2008. [DOI: 10.1118/1.2961788] [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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406
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Jin EH, Peng KM, Wang JAX, Du AN, Tang L, Wei L, Wang Y, Li SH, Song H. Study of the Morphology of the Olfactory Organ of African Ostrich Chick. Anat Histol Embryol 2008; 37:161-5. [DOI: 10.1111/j.1439-0264.2007.00814.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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407
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Lee K, Kim M, Kim Y, Ryoo B, Lim H, Song H, Kim H, Lee M, Im S, Chang H, Cho J. Gemcitabine and oxaliplatin combination as the first-line treatment in advanced pancreatic cancer: A multicenter phase II study. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15618] [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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408
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Kim J, Chae Y, Moon J, Song H, Do Y, Lee K, Kim M, Ryoo H, Park K, Lee W. Prognostic impact of apoptosis-related gene polymorphisms in patients with advanced gastric cancer treated with paclitaxel and cisplatin chemotherapy. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.4569] [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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409
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Han S, Park SR, Lee K, Song H, Kim MA, Oh D, Im S, Kim W, Bang Y, Kim T. Phase II study and biomarker analysis of cetuximab in combination with oxaliplatin, 5-fluorouracil, leucovorin as first-line treatment in patients with recurrent or metastatic gastric cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.4549] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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410
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Song H, Chen L. Peripheral primitive neuroectodermal tumors: Analysis of 23 Chinese cases. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.21514] [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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411
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Kim J, Song H, Do Y, Kim M, Lee K, Bae S, Ryoo H, Park K, Baek J, Lee W. A multicenter phase II study of docetaxel plus cisplatin as first-line therapy in patients with metastatic squamous cell esophageal cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15520] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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412
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Do Y, Kim J, Song H, Kim Y, Jin J, Park H. Metachronous second primary cancer after diagnosis of stomach cancer in Daegu Dongsan Medical Center, Korea. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15616] [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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413
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Jung J, Park S, Kwon J, Kim J, Kim H, Song H, Kim H, Zang D. A phase II study of splited 5-fluorouracil and cisplatin (split FP) against advanced or metastatic hepatocellular carcinoma (HCC): Preliminary results. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15636] [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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414
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Song H, Do Y, Kim J, Lee J. The knowledge and attitudes of cancer pain management of residents and nurses in university hospital in Daegu city, Korea. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.20701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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415
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Oh D, Lee K, Lee K, Sohn C, Zang D, Ryoo H, Song H, Kim J, Bang Y. A phase II trial of erlotinib in combination with gemcitabine and capecitabine in previously untreated metastatic/recurrent pancreatic cancer. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.4638] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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416
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Mathews DJH, Sugarman J, Bok H, Blass DM, Coyle JT, Duggan P, Finkel J, Greely HT, Hillis A, Hoke A, Johnson R, Johnston M, Kahn J, Kerr D, Kurtzberg J, Liao SM, McDonald JW, McKhann G, Nelson KB, Rao M, Regenberg A, Siegel AW, Smith K, Solter D, Song H, Vescovi A, Young W, Gearhart JD, Faden R. Cell-based interventions for neurologic conditions: ethical challenges for early human trials. Neurology 2008; 71:288-93. [PMID: 18463365 DOI: 10.1212/01.wnl.0000316436.13659.80] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Attempts to translate basic stem cell research into treatments for neurologic diseases and injury are well under way. With a clinical trial for one such treatment approved and in progress in the United States, and additional proposals under review, we must begin to address the ethical issues raised by such early forays into human clinical trials for cell-based interventions for neurologic conditions. METHODS An interdisciplinary working group composed of experts in neuroscience, cell biology, bioethics, law, and transplantation, along with leading disease researchers, was convened twice over 2 years to identify and deliberate on the scientific and ethical issues raised by the transition from preclinical to clinical research of cell-based interventions for neurologic conditions. RESULTS While the relevant ethical issues are in many respects standard challenges of human subjects research, they are heightened in complexity by the novelty of the science, the focus on the CNS, and the political climate in which the science is proceeding. CONCLUSIONS Distinctive challenges confronting US scientists, administrators, institutional review boards, stem cell research oversight committees, and others who will need to make decisions about work involving stem cells and their derivatives and evaluate the ethics of early human trials include evaluating the risks, safety, and benefits of these trials, determining and evaluating cell line provenance, and determining inclusion criteria, informed consent, and the ethics of conducting early human trials in the public spotlight. Further study and deliberation by stakeholders is required to move toward professional and institutional policies and practices governing this research.
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Song H, Hong JM, Lee KH, Choi JJ. Stable microwave coaxial cavity plasma system at atmospheric pressure. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2008; 79:054702. [PMID: 18513083 DOI: 10.1063/1.2918980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We present a systematic study of the development of a novel atmospheric microwave plasma system for material processing in the pressure range up to 760 torr and the microwave input power up to 6 kW. Atmospheric microwave plasma was reliably produced and sustained by using a cylindrical resonator with the TM(011) cavity mode. The applicator and the microwave cavity, which is a cylindrical resonator, are carefully designed and optimized with the time dependent finite element Maxwell equation solver. The azimuthal apertures are placed at the maximum magnetic field positions between the cavity and the applicator to maximize the coupling efficiency into the microwave plasma at a resonant frequency of 2.45 GHz. The system consists of a magnetron power supply, a circulator, a directional coupler, a three-stub tuner, a dummy load, a coaxial cavity, and a central cavity. Design and construction of the resonant structures and diagnostics of atmospheric plasma using optical experiments are discussed in various ranges of pressure and microwave input power for different types of gases.
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Abstract
The elongation and termination steps of protein synthesis are controlled by elongation and release factors, respectively. Elongation factors deliver the aminoacyl tRNA to the ribosomal A site, ensuring the elongation of the nascent polypeptide chain by one amino acid at a time, while release factors recognize the stop codons and trigger the release of the polypeptide from the ribosome. Recently, high-resolution crystal structures of ribosomes as well as translation factors on and off the ribosome have contributed a great deal to our understanding of the molecular basis of protein synthesis. This review concentrates on recent developments in our understanding of the elongation and termination steps of protein synthesis, particularly the roles of translation factors and their similarities and differences in the eukaryotic cytosol and prokaryotic systems, through a combination of structural and biochemical studies.
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419
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Solorzano A, Song H, Hickman D, Pérez DR. Pandemic influenza: preventing the emergence of novel strains and countermeasures to ameliorate its effects. Infect Disord Drug Targets 2008; 7:304-17. [PMID: 18220962 DOI: 10.2174/187152607783018763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Influenza is a seasonal disease that peaks every year in the winter months. Antigenic drift of the viral surface proteins, particularly the hemagglutinin (HA), is responsible for the virus's ability to evading the host's immune system, and for the severity of the disease. Pandemic influenza arises when an influenza virus carrying a novel HA gene enters into the naive human population, resulting in excess morbidity and mortality. Three major influenza pandemics were experienced in the last century and the emergence of a new pandemic strain is considered a matter of time. Our current understanding suggests that pandemic influenza strains arise from influenza viruses circulating in the natural reservoir, although the presence of intermediate hosts is considered essential in this process. Pigs and land-based birds have been shown to play a major role in the ecology of influenza viruses by providing an environment in which influenza viruses can change their phenotype, expand their host range, and eventually transmit to humans. In recent years, a great detail of attention has been placed on understanding the epidemiological and molecular factors that can lead to interspecies transmission of influenza viruses. In this review we will discuss the ecological and molecular aspects that lead to pandemic influenza as well as the intervention strategies at our disposal that can reduce the emergence of pandemic influenza strains and/or minimize their effects.
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Su D, Zhang W, Yang Y, Deng Y, Ma Y, Song H, Zhang S. Mutation Screening and Association Study of the TSSK4 Gene in Chinese Infertile Men With Impaired Spermatogenesis. ACTA ACUST UNITED AC 2008; 29:374-8. [DOI: 10.2164/jandrol.107.004598] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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421
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Song H, Feng Y, Hoeger S, Beck G, Hanusch C, Goettmann U, Leuvenink HGD, Ploeg RJ, Hillebrands J, Yard BA. High mobility group box 1 and adenosine are both released by endothelial cells during hypothermic preservation. Clin Exp Immunol 2008; 152:311-9. [PMID: 18341609 DOI: 10.1111/j.1365-2249.2008.03643.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Hypothermic preservation of solid allografts causes profound damage of vascular endothelial cells. This, in turn, might activate innate immunity. In the present study we employed an in vitro model to study to what extent supernatants of damaged endothelial cells are able to activate innate immunity and to study the nature of these signals. The expression of high mobility group box 1 (HMGB1) and adhesion molecules on human umbilical vein endothelial cell was studied by immunofluorescence, fluorescence activated cell sorter and Western blotting. Cytokine production was performed by enzyme-linked immunosorbent assay. HMGB1 expression was lost completely in endothelial cells after hypothermic preservation. This was associated with cell damage as it occurred only in untreated endothelial cell but not in cells rendered resistant to hypothermia-mediated damage by dopamine treatment. Only supernatants from hypothermia susceptible cells up-regulated the expression of interleukin (IL)-8 and adhesion molecules in cultured endothelial cells in an HMGB1-dependent manner. In whole blood assays, both supernatants of hypothermia susceptible and resistant cells inhibited tumour necrosis factor (TNF)-alpha production concomitantly with an increased IL-10 secretion. The activity of the supernatants was already found after 6 h of hypothermic preservation, and paralleled the decrease in intracellular adenosine triphosphate (ATP) levels. Modulation of TNF-alpha and IL-10 production by these supernatants was abrogated completely by prior treatment with adenosine deaminase and was similar to the response of an A2R agonist. Our study demonstrates that both HMGB1 and adenosine are released during hypothermic preservation. While release of HMGB1 is caused by cell damage, release of adenosine seems to be related to ATP hydrolysis, occurring in both susceptible and resistant cells.
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422
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Pearce CL, Wu AH, Gayther SA, Bale AE, Beck PA, Beesley J, Chanock S, Cramer DW, DiCioccio R, Edwards R, Fredericksen ZS, Garcia-Closas M, Goode EL, Green AC, Hartmann LC, Hogdall E, Kjaer SK, Lissowska J, McGuire V, Modugno F, Moysich K, Ness RB, Ramus SJ, Risch HA, Sellers TA, Song H, Stram DO, Terry KL, Webb PM, Whiteman DC, Whittemore AS, Zheng W, Pharoah PDP, Chenevix-Trench G, Pike MC, Schildkraut J, Berchuck A. Progesterone receptor variation and risk of ovarian cancer is limited to the invasive endometrioid subtype: results from the Ovarian Cancer Association Consortium pooled analysis. Br J Cancer 2008; 98:282-8. [PMID: 18219286 PMCID: PMC2361465 DOI: 10.1038/sj.bjc.6604170] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
There is evidence that progesterone plays a role in the aetiology of invasive epithelial ovarian cancer. Therefore, genes involved in pathways that regulate progesterone may be candidates for susceptibility to this disease. Previous studies have suggested that genetic variants in the progesterone receptor gene (PGR) may be associated with ovarian cancer risk, although results have been inconsistent. We have established an international consortium to pool resources and data from many ovarian cancer case–control studies in an effort to identify variants that influence risk. In this study, three PGR single nucleotide polymorphisms (SNPs), for which previous data have suggested they affect ovarian cancer risk, were examined. These were +331 C/T (rs10895068), PROGINS (rs1042838), and a 3′ variant (rs608995). A total of 4788 ovarian cancer cases and 7614 controls from 12 case–control studies were included in this analysis. Unconditional logistic regression was used to model the association between each SNP and ovarian cancer risk and two-sided P-values are reported. Overall, risk of ovarian cancer was not associated with any of the three variants studied. However, in histopathological subtype analyses, we found a statistically significant association between risk of endometrioid ovarian cancer and the PROGINS allele (n=651, OR=1.17, 95% CI=1.01–1.36, P=0.036). We also observed borderline evidence of an association between risk of endometrioid ovarian cancer and the +331C/T variant (n=725 cases; OR=0.80, 95% CI 0.62–1.04, P=0.100). These data suggest that while these three variants in the PGR are not associated with ovarian cancer overall, the PROGINS variant may play a modest role in risk of endometrioid ovarian cancer.
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Luo W, Yoo S, Wu J, Wang Z, Song H, Yin F. Effect of MV Scatter on kV Image Quality During Simultaneous kV-MV Imaging. Int J Radiat Oncol Biol Phys 2007. [DOI: 10.1016/j.ijrobp.2007.07.2028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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425
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Moura L, Vakharia V, Liu M, Song H. In ovo Vaccine Against Infectious Bursal Disease. ACTA ACUST UNITED AC 2007. [DOI: 10.3923/ijps.2007.770.775] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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