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1.
Cardiac output was measured by gated magnetic resonance imaging (MRI) and by thermodilution in four mongrel dogs. The entire heart was examined in contiguous slices at end-diastole and end-systole in a plane parallel to the interventricular septum. Each set of images was analyzed for chamber volume using a custom computer program to evaluate each pixel. No geometric assumptions were made. Cardiac output was calculated for right and left ventricles and compared with the thermodilution data. We found that the cardiac output of the right ventricle compared well with that of the left ventricle and that both fell within the range measured by thermodilution. Cardiac-gated MRI has the potential to assess the cardiac output of both the right and left ventricles. Comparison between right ventricular and left ventricular function will permit quantification of left to right shunting or unilateral ventricular volume overload. 相似文献
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Evaluation of a Commercial PCR Kit for Diagnosis of Cytomegalovirus Infection of the Central Nervous System 总被引:3,自引:2,他引:1 下载免费PDF全文
Adriana Weinberg Debbie Spiers Guan-Yung Cai Christopher M. Long Rita Sun Vince Tevere 《Journal of clinical microbiology》1998,36(11):3382-3384
We evaluated the AMPLICOR cytomegalovirus (CMV) PCR kit for the diagnosis of neurologic CMV infections on 43 positive and 112 negative archived cerebrospinal fluid specimens originally tested by an in-house PCR method. The AMPLICOR kit showed sensitivity and specificity of 95 and 100%, respectively, versus the home-grown assay, indicating its utility in this clinical setting. 相似文献
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Mohamad H Yamani Randall C Starling James B Young Daniel Cook Yang Yu D Geoffrey Vince Patrick McCarthy Norman B Ratliff 《The Journal of heart and lung transplantation》2002,21(9):983-989
BACKGROUND: A cascade of inflammatory reactions characterize acute vascular rejection after heart transplantation. This study was undertaken to test the hypothesis that acute vascular rejection is associated with up-regulation of vitronectin receptor (alphavbeta3), increased expression of tissue factor, and activation of the extracellular matrix metalloproteinase induction system. METHODS: Acute vascular rejection developed in 14 heart transplant recipients within 2 weeks of transplantation, confirmed by immunofluorescence (AVR group). We compared these patients with 10 transplant recipients who had no evidence of acute vascular rejection or peritransplant ischemic injury (control group). We evaluated endomyocardial biopsy specimens for alphavbeta3, tissue factor, and extracellular matrix metalloproteinase inducer (EMMPRIN). RESULTS: Compared with the control group, the AVR group demonstrated evidence of significantly increased expression of alphavbeta3 (1.9-fold, p < 0.001), tissue factor (1.8-fold, p < 0.001), and EMMPRIN (1.5-fold, p < 0.001). All patients in the AVR group received plasmapheresis; 11 of 14 patients had evidence of ischemic necrosis on biopsy specimens, and 3 of 14 patients experienced hemodynamic compromise and graft dysfunction and died within 3 weeks of transplant. Another patient died at 10 months after transplant. CONCLUSIONS: Acute vascular rejection is associated with up-regulation of alphavbeta3, tissue factor, and activation of the matrix metalloproteinase induction system, which may contribute to the lethal morbidity associated with this disease. 相似文献
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Endometrial integrin expression in women undergoing IVF and ICSI: a comparison of the two groups and fertile controls 总被引:4,自引:0,他引:4
Thomas K Thomson AJ Wood SJ Kingsland CR Vince G Lewis-Jones DI 《Human reproduction (Oxford, England)》2003,18(2):364-369
BACKGROUND: Integrins are thought to play a vital role in implantation. Three integrins in particular (alpha(4)beta(1), alpha(v)beta(3) and alpha(1)beta(1)) are all present during the implantation window. Defects in their expression have been linked to tubal disease, unexplained infertility and endometriosis. Hence, a reduced endometrial integrin expression would be expected in women attending for IVF due to these causes of infertility when compared with those with male factor infertility attending for ICSI. METHODS: Women attending for IVF (n = 25) and ICSI (n = 25) treatment were recruited, and timed endometrial biopsies were taken during the 'implantation window' (cycle day 20-24). A group of fertile women (n = 15) attending for sterilization was used as controls. RESULTS: There was no significant difference in integrin expression between patients undergoing IVF or ICSI. Neither did these groups differ from the control group. CONCLUSIONS: The endometrium in patients undergoing ICSI treatment is sometimes thought to be more receptive, as the infertility might be due to a male factor. This study shows that there is no significant difference in integrin expression between patients attending for IVF or ICSI and the control group. These data add to the increasing uncertainty about the clinical value of assessing the endometrium with only one marker, in this case integrins. 相似文献
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Using a specific radioimmunoassay technique it seems that Prostacyclin (PG-I2) has a strong effect on the cyclic nucleotide content of the rat gastric (fundic) mucosa. 1 min after an intragastric application of 100 g/kg PG-I2 the cAMP-content and in the 5th min the cGMP-content showed a highly significant decrease. It seems that the basic mechanism of action of PG-I2 is a typical hit and run effect, acting on the intracellular second messenger system. 相似文献
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Neil K. Jairath Alan Dal Pra Randy Vince Robert T. Dess William C. Jackson Jeffrey J. Tosoian Sean M. McBride Shuang G. Zhao Alejandro Berlin Brandon A. Mahal Amar U. Kishan Robert B. Den Stephen J. Freedland Simpa S. Salami Samuel D. Kaffenberger Alan Pollack Phuoc Tran Rohit Mehra Daniel E. Spratt 《European urology》2021,79(3):374-383
ContextMolecular biomarkers aim to address the established limitations of clinicopathologic factors to accurately risk stratify patients with prostate cancer (PCa). Questions remain as to whether sufficient evidence supports adoption of these biomarkers for clinical use.ObjectiveTo perform a systematic review of the available evidence supporting the clinical utility of the Decipher genomic classifier (GC).Evidence acquisitionThe review was performed as per the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines by searching PubMed and conference abstracts from January 2010 to June 2020. Evidence was then graded using the criteria of Simon et al (Simon RM, Paik S, Hayes DF. Use of archived specimens in evaluation of prognostic and predictive biomarkers. J Natl Cancer Inst 2009;101:1446–52) and American Urology Association (AUA) criteria.Evidence synthesisIn total, 42 studies and 30 407 patients were included. GC performance data were available for localized, postprostatectomy, nonmetastatic castration-resistant, and metastatic hormone-sensitive PCa as part of retrospective studies (n = 12 141), prospective registries (n = 17 053), and prospective and post hoc randomized trial analyses (n = 1213). In 32 studies (n = 12 600), the GC was independently prognostic for all study endpoints (adverse pathology, biochemical failure, metastasis, and cancer-specific and overall survival) on multivariable analysis and improved the discrimination over standard of care in 24 studies (n = 8543). GC use changed the management in active surveillance (number needed to test [NNT] = 9) and postprostatectomy (NNT = 1.5–4) settings in five studies (n = 4331). Evidence strength was levels 1 and 2 by the Simon criteria for all disease states other than high-risk PCa, and grades A and B by AUA criteria depending on disease state.ConclusionsConsistent data are now present from diverse levels of evidence, which when viewed together, have demonstrated clinical utility of the GC in PCa. The utility of the GC is strongest for intermediate-risk PCa and postprostatectomy decision-making.Patient summaryIn this paper, we review the evidence of the Decipher genomic classification tool for men with prostate cancer. We found consistent evidence that the test helps identify which cancers are more or less aggressive, which in turn aids in personalized treatment decision-making. 相似文献
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Clark D.A.; Vince G.; Flanders K.C.; Hirte H.; Starkey P. 《Human reproduction (Oxford, England)》1995,10(4):976
The last line in column one on page 2274 was published incorrectly.It should have read:...TGF-2 but not with turkey anti-TGF-1(data not shown). 相似文献
10.
Patzakis MJ Fitzgerald RH Hanssen AD Vince K 《Contemporary orthopaedics》1995,31(3):193-8, 200, 204 passim