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- Henein, Michael, et al.
(författare)
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European Calcific Coronary Artery Disease (Euro-CCAD) study : the additional value of coronary calcification, to angiography, in investigating angina patients
- 2013
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Ingår i: European Heart Journal. - : Oxford University Press. - 0195-668X .- 1522-9645. ; 34:Supplement: 1, s. 177-177
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Background and aim: This study is a part of the Euro-CCAD (CalcificCoronary Artery Disease) project, investigating the geographic prevalence of a coronary artery calcium (CAC) score of >400 in patients with no flow-limiting lesions (FLL) as a potential cause for stable angina. With the development of computerized tomographic coronaryangiography (CTCA), assessment of CAC has become less fashionable, although CTCA often fails to determine the exact cause of symptoms in the absence of FLLs.Methods: Data from consecutive symptomatic intermediate risk patients (as defined by guidelines), who had both CA and calcium scoring, were compared between USA and Europe as well as between Europeancountries (Denmark, Germany, France and Spain). No patient had a priorcoronary event, intervention, valve disease or kidney failure.Results: The inclusion criteria were fulfilled in 4,444 patients, (60% males), mean age 59.3 years (SD 11.3 years). The prevalence of FLL was higher in the USA at 53% (983/1851) than in Europe at 34% (870/2593) as a whole, (p<0.001). The FLL prevalence was also different (p<0.001) within Europe: Denmark 16%, Germany 35%, France 46% and Spain 89%. In patients with no FLL, 9% had CAC >400, with no difference in prevalence between the USA and Europe, irrespective of age and gender. However, within Europe the prevalence of patients without FLL and with a CAC score >400 differed: Spain 22%, Germany 13%, France 10% and Denmark 7%. Within the total patient population 22% of those with CAC score >400 had no FLL.Conclusion: Despite the known variability in the current management of symptomatic angina patients at intermediate risk between the USA andEuropean countries, a consistent proportion (nearly 10%) exhibits severe CAC in the absence of flow limiting lesions. The presence of severe CAC could explain their symptoms through compromised coronary flow reserve. These results highlight the potential value of obtaining additional anatomical information by using CAC assessment in symptomatic patients.
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- Henein, Michael Y., et al.
(författare)
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European Calcific Coronary Artery Disease (Euro-CCAD) study : the relationship between coronary calcification and flow limiting lesion in symptomatic patients
- 2013
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Ingår i: European Heart Journal. - : Oxford University Press. - 0195-668X .- 1522-9645. ; 34:Supplement: 1, s. 723-723
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Background and aim: This study is a part of the Euro-CCAD (CalcificCoronary Artery Disease) project, investigating the geographic prevalence of a coronary artery calcium (CAC) score of >400 in patients with no flow-limiting lesions (FLL) as a potential cause for stable angina. With the development of computerized tomographic coronaryangiography (CTCA), assessment of CAC has become less fashionable, although CTCA often fails to determine the exact cause of symptoms in the absence of FLLs.Methods: Data from consecutive symptomatic intermediate risk patients (as defined by guidelines), who had both CA and calcium scoring, were compared between USA and Europe as well as between Europeancountries (Denmark, Germany, France and Spain). No patient had a priorcoronary event, intervention, valve disease or kidney failure.Results: The inclusion criteria were fulfilled in 4,444 patients, (60% males), mean age 59.3 years (SD 11.3 years). The prevalence of FLL was higher in the USA at 53% (983/1851) than in Europe at 34% (870/2593) as a whole, (p<0.001). The FLL prevalence was also different (p<0.001) within Europe: Denmark 16%, Germany 35%, France 46% and Spain 89%. In patients with no FLL, 9% had CAC >400, with no difference in prevalence between the USA and Europe, irrespective of age and gender. However, within Europe the prevalence of patients without FLL and with a CAC score >400 differed: Spain 22%, Germany 13%, France 10% and Denmark 7%. Within the total patient population 22% of those with CAC score >400 had no FLL.Conclusion: Despite the known variability in the current management of symptomatic angina patients at intermediate risk between the USA andEuropean countries, a consistent proportion (nearly 10%) exhibits severe CAC in the absence of flow limiting lesions. The presence of severe CAC could explain their symptoms through compromised coronary flow reserve. These results highlight the potential value of obtaining additional anatomical information by using CAC assessment in symptomatic patients.
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- Hecker, Yanina P., et al.
(författare)
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A Neospora caninum vaccine using recombinant proteins fails to prevent foetal infection in pregnant cattle after experimental intravenous challenge
- 2014
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Ingår i: Veterinary Immunology and Immunopathology. - : Elsevier BV. - 0165-2427 .- 1873-2534. ; 162:3-4, s. 142-153
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the present study was to evaluate the immunogenicity and protective efficacy of rNcSAG1, rNcHSP20 and rNcGRA7 recombinant proteins formulated with immune stimulating complexes (ISCOMs) in pregnant heifers against vertical transmission of Neospora caninum. Twelve pregnant heifers were divided into 3 groups of 4 heifers each, receiving different formulations before mating. Immunogens were administered twice subcutaneously: group A animals were inoculated with three recombinant proteins (rNcSAG1, rNcHSP20, rNcGRA7) formulated with ISCOMs; group B animals received ISCOM-MATRIX (without antigen) and group C received sterile phosphate-buffered saline (PBS) only. The recombinant proteins were expressed in Escherichia coil and purified nickel resin. All groups were intravenously challenged with the NC-1 strain of N. caninum at Day 70 of gestation and dams slaughtered at week 17 of the experiment. Heifers from group A developed specific antibodies against rNcSAG1, rNcHSP20 and rNcGRA7 prior to the challenge. Following immunization, an statistically significant increase of antibodies against rNcSAG1 and rNcHSP20 in all animals of group A was detected compared to animals in groups B and C at weeks 5, 13 and 16 (P< 0.001). Levels of antibodies against rNcGRA7 were statistical higher in group A animals when compared with groups B and Cat weeks 5 and 16 (P> 0.001). There were no differences in IFN-gamma production among the experimental groups at any time point (P> 0.05). Transplacental transmission was determined in all foetuses of groups A, B and C by Western blot, immunohistochemistry and nested PCR. This work showed that rNcSAG1, rNcHSP20 and rNcGRA7 proteins while immunogenic in cattle failed to prevent the foetal infection in pregnant cattle challenged at Day 70 of gestation.
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- Nicoll, Rachel, et al.
(författare)
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Diabetes and male gender are key risk factor predictors of CAC extent : a Euro-CCAD study
- 2016
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Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Background and aims: Although much has been written about the risk factor predictors of CAC extent, few studies have been carried out on symptomatic patients. Similarly, no study has directly compared predictors of CAC extent and zero CAC.Methods: From the European Calcific Coronary Artery Disease (Euro-CCAD) cohort, we retrospectively investigated 6309 symptomatic patients, 62% male, from Denmark, France, Germany, Italy, Spain and USA. All had risk factor assessment and CT scanning for CAC scoring. Results: Among all patients, male gender (β = 1.36, p<0.001) and diabetes (β = 0.47, p<0.001) were the most important risk factors of CAC extent, with age, diabetes (DM), obesity, family history of CAD and number of risk factors also being predictive. Among patients with CAC, DM, hypertension (HT) and dyslipidaemia (DL) were predictors of an increasing CAC score in males and females, with DM being the strongest (p<0.001 for both). These results were echoed in quantile regression, where DM was consistently the most important predictor of CAC extent in every quantile in both males and females. HT and DL were also predictive but to a lesser extent, with HT being predictive in the high CAC quantiles and DL in the low CAC quantiles. Conclusion: In addition to male gender, DM is the most important predictor of CAC extent in both genders.
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- Nicoll, Rachel, et al.
(författare)
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The coronary calcium score is a more accurate predictor of significant coronary stenosis than conventional risk factors in symptomatic patients : Euro-CCAD study
- 2016
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Ingår i: International Journal of Cardiology. - : Elsevier BV. - 0167-5273 .- 1874-1754. ; 207, s. 13-19
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Tidskriftsartikel (refereegranskat)abstract
- Aims: In this retrospective study we assessed the predictive value of the coronary calcium score for significant (>50%) stenosis relative to conventional risk factors. Methods and Results: We investigated 5515 symptomatic patients from Denmark, France, Germany, Italy, Spain and the USA. All had risk factor assessment, computed tomographic coronary angiogram (CTCA) or conventional angiography and a CT scan for coronary artery calcium (CAC) scoring. 1539 (27.9%) patients had significant stenosis, 5.50 of whom had zero CAC. In 5074 patients, multiple binary regression showed the most important predictor of significant stenosis to be male gender (B = 1.07) followed by diabetes mellitus (B = 0.70) smoking, hypercholesterolaemia, hypertension, family history of CAD and age but not obesity. When the log transformed CAC score was included, it became the most powerful predictor (B = 1.25), followed by male gender (B = 0.48), diabetes, smoking, family history and age but hypercholesterolaemia and hypertension lost significance. The CAC score is a more accurate predictor of >50% stenosis than risk factors regardless of the means of assessment of stenosis. The sensitivity of risk factors, CAC score and the combination for prediction of >50% stenosis when measured by conventional angiogram was considerably higher than when assessed by CTCA but the specificity was considerably higher when assessed by CTCA. The accuracy of CTCA for predicting >50% stenosis using the CAC score alone was higher (AUC 0.85) than using a combination of the CAC score and risk factors with conventional angiography (AUC 0.81). Conclusion: In symptomatic patients, the CAC score is a more accurate predictor of significant coronary stenosis than conventional risk factors.
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- Adamo, Marianna, et al.
(författare)
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Epidemiology, pathophysiology, diagnosis and management of chronic right-sided heart failure and tricuspid regurgitation. A clinical consensus statement of the Heart Failure Association (HFA) and the European Association of Percutaneous Cardiovascular Interventions (EAPCI) of the ESC
- 2024
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Ingår i: European Journal of Heart Failure. - : WILEY. - 1388-9842 .- 1879-0844.
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Tidskriftsartikel (refereegranskat)abstract
- Right-sided heart failure and tricuspid regurgitation are common and strongly associated with poor quality of life and an increased risk of heart failure hospitalizations and death. While medical therapy for right-sided heart failure is limited, treatment options for tricuspid regurgitation include surgery and, based on recent developments, several transcatheter interventions. However, the patients who might benefit from tricuspid valve interventions are yet unknown, as is the ideal time for these treatments given the paucity of clinical evidence. In this context, it is crucial to elucidate aetiology and pathophysiological mechanisms leading to right-sided heart failure and tricuspid regurgitation in order to recognize when tricuspid regurgitation is a mere bystander and when it can cause or contribute to heart failure progression. Notably, early identification of right heart failure and tricuspid regurgitation may be crucial and optimal management requires knowledge about the different mechanisms and causes, clinical course and presentation, as well as possible treatment options. The aim of this clinical consensus statement is to summarize current knowledge about epidemiology, pathophysiology and treatment of tricuspid regurgitation in right-sided heart failure providing practical suggestions for patient identification and management.
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