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1Molecular phenotypes of human parvovirus B19 in patients with myocarditis显示文摘AIM:To investigate molecular phenotypes of myocardial B19V-infection to determine the role of B19V in myocarditis and dilated cardiomyopathy(DCM).METHODS:Endomyocardial biopsies(EMBs) from 498 B19V-positive patients with myocarditis and DCMwere analyzed using molecular methods and functional experiments.EMBs were obtained from the University Hospitals of Greifswald and Tuebingen and additionally from 36 German cardiology centers.Control tissues were obtained at autopsy from 34 victims of accidents,crime or suicide.Identification of mononuclear cell infiltrates in EMBs was performed using immunohistological staining.Anti-B19V-IgM and anti-B19V-IgG were analyzed by enzyme-linked immunosorbent assay(ELISA).B19V viral loads were determined using in-house quantitative real-time polymerase chain reaction(PCR).For B19V-genotyping a new B19V-genotype-specific restriction fragment length polymorphism(RFLP)-PCR was established.B19V-genotyping was verified by direct DNAsequencing and sequences were aligned using BLAST and BioEdit software.B19V P6-promoter and HHV6-U94-transactivator constructs were generated for cell culture experiments.Transfection experiments were conducted using human endothelial cells 1.Luciferase reporter assays were performed to determine B19Vreplication activity.Statistical analysis and graphical representation were calculated using SPSS and Prism5 software.RESULTS:The prevalence of B19V was significantly more likely to be associated with inflammatory cardiomyopathy(iCMP) compared to uninflamed DCM(59.6% vs 35.3%)(P < 0.0001).The detection of B19V-mRNA replication intermediates proved that replication of B19V was present.RFLP-PCR assays showed that B19V-genotype 1(57.4%) and B19V-genotype 2(36.7%) were the most prevalent viral genotypes.B19V-genotype 2 was observed more frequently in EMBs with iCMP(65.0%) compared to DCM(35%)(P = 0.049).Although there was no significant difference in gender-specific B19V-loads,women were more frequently infected with B19V-genotype 2(44.6%) than men(36.0%)(P = 0.0448).Coinfection with B19V and other cardiotropic viruses was found in 19.2% of tissuesamples and was associated with higher B19V viral load compared to B19V-monoinfected tissue(P = 0.0012).The most frequent coinfecting virus was human herpes virus 6(HHV6,16.5%).B19V-coinfection with HHV6 showed higher B19V-loads compared to B19V-monoinfected EMBs(P = 0.0033),suggesting that HHV6 had transactivated B19V.In vitro experiments confirmed a 2.4-fold increased B19V P6-promoter activity by the HHV6 U94-transactivator.CONCLUSION:The finding of significantly increased B19V loads in patients with histologically proven cardiac inflammation suggests a crucial role of B19V-genotypes and reactivation of B19V-infection by HHV6-coinfection in B19V-associated iCMP.Our findings suggest that B19V-infection of the human heart can be a causative event for the development of an endothelial cell-mediated inflammatory disease and that this is related to both viral load and genotype.C-Thomas Bock Anja Düchting Friederike Utta Eva Brunner Bui Tien Sy Karin Klingel Florian Lang Meinrad Gawaz Stephan B Felix Reinhard Kandolf 2014World Journal of Cardiology2014,6,4:3
2Multivariate statistical modeling for image denoising using wavelet transforms显示文摘Cho D Bui T D 2005Signal Processing:Image Communication2005,20,:1
3Translation-invm'iant denoising using muhiwavelets 显示文摘BUI T D CHEN Guang-yi 1998IEEE Trans on Signal Processing1998,46,12:1
4Translation-invariant de-noising using multiwavelets显示文摘BUI T D CHEN G Y 1998IEEE Transaction on Signal Processing1998,46,12:1
5Multivariate Statistical Modeling for Image Denoising Using Wavelet Transforms显示文摘Dongwook Cho Tien D Bui 2005Signal Processing:Image Communication2005,20,:1
6Landslide suscepti- bility analysis in the Hoa Binh province of Viemam using statistical index and logistic regression显示文摘Bui D T Lofman O Revhaug I 2011Natural Haz- ards2011,59,3:1
7Land slide suscep- tibility analysis in the Hoa Binh province of Vietnam using statistical index and logistic regression显示文摘BUI D T LOFMAN O REVHAUG I 2011Natural Hazards2011,59,3:1
8Technique for measurement of power-line impedance in the frequency range from 500 kHz to 500 MHz 显示文摘Kwasniok P J Bui M D Kozlowski A J 1993IEEE Trans on Electromagnetic Compatibility1993,35,1:1
9Propagation of transients in dispersive dielectric media显示文摘 Stuchly S S Costache G I 1991IEEE Trans MTT1991,39,7:1
10Functional scintigraphy of the adrenal gland显示文摘Rubello D Bui C Casara D 2002Eur J Endocrinol2002,147,1:1
11Solving Stiff Differential Equation in the Simulation of Physical Systems显示文摘Tien D Bui 1990Simulation1990,54,5:1
12Rotation invariant pattern recognition using ridgelet, wavelet cycle-spinning, and fourier features 显示文摘Chen G Y Bui T D Krzyzak A 2005Pattern Recognition2005,38,12:1
13Translation-invariant denoising using multiwavelets 显示文摘Bui T D Chen G 1998IEEE Trans SP1998,46,12:1
14Numerical Modeling of Bed Deformation in Laboratory Channels显示文摘BUI M D THOMAS W N WOLFGANG R 2004Journal of Hydraulic Engineering2004,130,9:1
15Multivariate statistical modeling for image denoising using wavelet transforms显示文摘Dongwook Cho Tien D Bui 2005Signal Processing:Image Communication2005,20,:1
16Genetic reductionof group 1 metabotropic glutamate receptors altersselect behaviors in a mouse model for fragile X syndrome显示文摘THOMAS AM BUI N GRAHAM D 2011Behav Brain Res2011,223,2:1
17Image denoising with neighbour dependency and customized wavelet and threshold显示文摘CHEN G Y BUI T D KRZYAK A 2005Pattern Recognition2005,38,1:1
18Comparison of CT and catheter arteriography for evaluation of peripheral arterial disease 显示文摘Bui TD Gelfand D Whipple S 2005Vase Endovaseular Surg2005,39,6:1
19Predictors of morbidity and mortality in patients with traumatic duodenal injuries显示文摘Huerta S Bui T Porral D 2005Am Surg2005,71,9:1
20Rotation invariant texture classification by ridgelet transform and frequency- orientation space decomposition 显示文摘Pan W Bui T D Suen C Y 2008Signal Processing2008,88,:1
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