نتایج جستجو برای: trv

تعداد نتایج: 297  

Journal: :Blood 2011
Claudia R Morris Hae-Young Kim Felicia Trachtenberg John Wood Charles T Quinn Nancy Sweeters Janet L Kwiatkowski Alexis A Thompson Patricia J Giardina Jeanne Boudreaux Nancy F Olivieri John B Porter Ellis J Neufeld Elliott P Vichinsky

An elevated tricuspid regurgitant jet velocity (TRV) is associated with hemolysis and early mortality in sickle cell disease, yet risk factors, clinical parameters, and mortality associated with this biomarker in thalassemia are poorly defined. This report summarizes the prevalence of an elevated TRV in 325 patients screened by Doppler echocardiography in the Thalassemia Clinical Research Netwo...

2014
Mark T. Gladwin Robyn J. Barst J. Simon R. Gibbs Mariana Hildesheim Vandana Sachdev Mehdi Nouraie Kathryn L. Hassell Jane A. Little Dean E. Schraufnagel Lakshmanan Krishnamurti Enrico Novelli Reda E. Girgis Claudia R. Morris Erika Berman Rosenzweig David B. Badesch Sophie Lanzkron Oswaldo L. Castro James G. Taylor Jonathan C. Goldsmith Gregory J. Kato Victor R. Gordeuk Roberto F. Machado

BACKGROUND The role of pulmonary hypertension as a cause of mortality in sickle cell disease (SCD) is controversial. METHODS AND RESULTS We evaluated the relationship between an elevated estimated pulmonary artery systolic pressure and mortality in patients with SCD. We followed patients from the walk-PHaSST screening cohort for a median of 29 months. A tricuspid regurgitation velocity (TRV)≥...

Journal: :The Journal of general virology 1999
S A MacFarlane N Vassilakos D J Brown

Although sequence data have been obtained for several tobravirus isolates, only two of these isolates are nematode-transmissible. Tobacco rattle virus (TRV) PpK20 is transmitted by Paratrichodorus pachydermus, whereas pea early-browning virus (PEBV) TpA56 is transmitted by Trichodorus primitivus. To clarify whether differences in the genome structure of these isolates are relevant to the specif...

Journal: :Journal of nematology 2000
E Karanastasi N Vassilakos I M Roberts S A Macfarlane D J Brown

Unequivocal evidence of the viral nature of virus-like particles observed at the specific site of retention of tobacco rattle virus (TRV) in Paratrichodorus and Trichodorus nematodes has not previously been available. A new staining technique using safranin-O, which does not affect viral antigenicity, was used with an antiserum raised against the coat protein of TRV and prepared for use with im...

Journal: :European journal of ophthalmology 2007
A Horani S Frenkel Eytan Blumenthal

PURPOSE To quantify the magnitude of test-retest variability (TRV) for normal subjects in serial visual fields (VF) using the frequency doubling technology (FDT) instrument. METHODS Twenty-one healthy adults, aged 23 to 60 years, underwent four serial FDT VF tests, using the full-threshold C-20 program of the Zeiss-Humphrey FDT analyzer, on one randomly chosen eye. The VF tests were spaced 2 ...

Journal: :The Journal of general virology 2005
Cecilia Czibener Diego Alvarez Eduardo Scodeller Andrea V Gamarnik

Triatoma virus (TrV) belongs to a new family of RNA viruses known as Dicistroviridae. Nucleotide sequence comparisons between different dicistroviruses allowed two putative internal ribosomal entry sites (IRESs) in the TrV RNA to be defined: the 5'UTR IRES of 548 nt and the intergenic region (IGR) IRES of 172 nt. Using monocistronic and bicistronic RNAs, it was shown that the TrV genome contain...

2017
Takuya Numata Ted Maddess Chota Matsumoto Sachiko Okuyama Shigeki Hashimoto Hiroki Nomoto Yoshikazu Shimomura

PURPOSE Test-retest variability (TRV) of visual field (VF) data seriously degrades our capacity to recognize true VF progression. We conducted repeated high-resolution perimetry with a test interval of 0.5° to investigate the sources of TRV. In particular, we examined whether the spatial variance of the observed sensitivity changes or if their absolute magnitude was of more importance. METHOD...

2010
Vincent Roule Fabien Labombarda Arnaud Pellissier Rémi Sabatier Thérèse Lognoné Sophie Gomes Emmanuel Bergot Paul Milliez Gilles Grollier Eric Saloux

BACKGROUND Echocardiographic ratio of peak tricuspid regurgitant velocity to the right ventricular outflow tract time-velocity integral (TRV/TVI rvot) was presented as a reliable non-invasive method of estimating pulmonary vascular resistance (PVR). Studies using this technique in patients with moderate to high PVR are scarce. Left ventricular outflow tract time-velocity integral (TVI lvot) can...

Journal: :Journal of the American College of Cardiology 1999
E Bossone M Rubenfire D S Bach M Ricciardi W F Armstrong

OBJECTIVES The aim of this study was to explore the full range of tricuspid valve regurgitation velocity (TRV) at rest and with exercise in disease free individuals. Additionally we examined the relationship of stroke volume (SV), cardiac output (CO) and TRV to exercise capacity. BACKGROUND Doppler evaluation of TRV can be used to estimate pulmonary artery systolic pressure (PASP). Most studi...

Journal: :Plant physiology 2014
Lourdes Fernández-Calvino Sonia Osorio M Luisa Hernández Ignacio B Hamada Francisco J del Toro Livia Donaire Agnés Yu Regla Bustos Alisdair R Fernie José M Martínez-Rivas César Llave

During compatible virus infections, plants respond by reprogramming gene expression and metabolite content. While gene expression studies are profuse, our knowledge of the metabolic changes that occur in the presence of the virus is limited. Here, we combine gene expression and metabolite profiling in Arabidopsis (Arabidopsis thaliana) infected with Tobacco rattle virus (TRV) in order to invest...

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