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90 Annular size and interaction with trans-catheter aortic valves for the treatment of severe bicuspid aortic valve stenosis: insights from the beat registry. Eur Heart J Suppl 2021. [DOI: 10.1093/eurheartj/suab134.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Aims
Transcatheter aortic valve replacement (TAVR) is safe and feasible in patients with bicuspid aortic valve (BAV), but whether annular size may influence TAVR results in BAV patients remains unclear. We aimed at evaluating the impact of aortic annular size on procedural and clinical outcomes of BAV patients undergoing TAVR, as well as potential interactions between annular dimension and trans-catheter heart valve (THV) type [balloon-expandable (BEV) vs. self-expanding (SEV)].
Methods and results
BEAT is a multicentre registry of consecutive BAV stenosis undergoing TAVR. For this sub-study patients were classified according to annular dimension in small-annulus (area < 400 mm2 or perimeter <72 mm), medium-annulus (area ≥ 400 and < 575 mm2, perimeter ≥72 mm and< 85 mm), large-annulus (area ≥575 mm2 or perimeter ≥85 mm). Primary endpoint was Valve Academic Research Consortium-2 (VARC-2) device success. 45(15.5%) patients had small, 132(45.3%) medium, and 114(39.2%) large annuli. Compared with other groups, patients with large annuli were more frequently male, at younger age, had higher body mass index, larger aortic valve area, higher rate of moderate-severe calcification, lower mean trans-aortic valve gradient and lower left ventricular ejection fraction. In large-annuli SEVs were associated with a lower VARC-2 device success (75.9% vs. 90.6%, P = 0.049) driven by a higher rate of paravalvular valvular leak (PVL) compared to BEVs (20.7% vs. 1.2%, P < 0.001). However, no differences in clinical outcomes were observed according to annular size nor THV type.
Conclusions
TAVR in BAV patients is feasible irrespective of annular size. However in patients with large aortic annulus SEVs were associated with a significantly higher rate of PVLs compared to BEVs.
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Randomized clinical trial comparing a rivaroxaban-based with an antiplatelet-based strategy for cerebral embolization after TAVR (EARTH TAVR)-a magnetic resonance imaging substudy of the GALILEO trial. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Cerebral embolization in patients after Transcatheter Aortic Valve Replacement (TAVR) represents a serious complication, that was related to impaired bioprosthetic leaflet motion and new-onset atrial fibrillation (AFib).
Purpose
Hereafter we present the first randomized study comparing the effect of an anticoagulation plus antiplatelet with a dual antiplatelet antithrombotic treatment in patients after TAVR on cerebral embolizations as assessed by serial cerebral magnetic resonance imaging (MRI).
Methods
The Evaluation of Cerebral Thrombembolism After TAVR (EARTH - TAVR) study was conducted as an investigator initiated substudy of the multicenter, randomized, GALILEO study. After successful TAVR, patients without indication for chronic anticoagulation were randomly assigned to rivaroxaban 10mg plus acetylsalicylic acid 75–100mg once-daily or clopidogrel 75mg plus acetylsalicylic acid 75–100mg once-daily. Cerebral MRI scans were performed pre-TAVR as a baseline, post-TAVR (within 24–48 hours after TAVR) and 90 days after TAVR. The MRI protocol included diffusion-weighted (DWI) and fluid-attenuated inversion recovery (FLAIR) imaging. Cerebral embolic lesions were evaluated by an independent cerebral MRI core lab. The primary outcome measure of this study was the occurrence and extent of cerebral embolizations as measured by total volume of new ischaemic cerebral lesions.
Results
36 patients were enrolled in the EARTH and the GALILEO study. The DWI MRI scans revealed an increase of cerebral lesions and volume post-TAVR by a median of 4.75 (95% NBCI 2.1–8.9) and 0.26cm3 (95% NBCI 0.11–0.59). On FLAIR imaging, lesion number and volume increased by a median of 3 (95% NBCI 1.5–6) and 0.1 cm3 (95% NBCI 0.04–0.31). At the 90 days MRI scan, there was no statistically significant change in cerebral lesions, if compared to the post-TAVR scan, irrespective of the treatment arm.
Conclusion
Thromboembolic events occur largely in the periinterventional phase post TAVR. Thereafter, the risk for additional cerebral embolization is low. An additional rivaroxaban therapy beyond antiplatelet inhibition did not impact on cerebral thromboembolism.
Funding Acknowledgement
Type of funding source: Private company. Main funding source(s): Bayer Pharmaceuticals
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A multicentre, randomised controlled clinical study of drug-coated balloons for the treatment of coronary in-stent restenosis. EUROINTERVENTION 2020; 16:e328-e334. [DOI: 10.4244/eij-d-19-00051] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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P2809Comparison between treatment of “established” versus complex “off-label” coronary lesions with Absorb bioresorbable scaffold implantation: results from the GABI-R registry. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objectives
The purpose of this study was to compare the clinical outcomes of patients treated with bioresorbable scaffold (BRS) for off-label versus approved indications.
Background
The BRS promised some advantages in terms of complete biodegradation, however, the implication of BRS for off-label indications is not well described.
Methods
The short- and long-term outcome after implantation of a bioresorbable scaffold system (ABSORB, Abbott Vascular, USA) was evaluated in the prospective, non-interventional, multicenter real-world German-Austrian ABSORB RegIstRy (GABI-R).
Results
A total of 3,188 patients were enrolled. Patients were divided into two groups: on-label BRS use (33.0%) and off-label use (66.9%) if at least one off-label use criteria was met. The incidence of scaffold thrombosis in confirmed cases was significantly higher in off-label group (1.36% vs. 0.57%, p=0.04; OR 2.41 (95% CI: 1.00–5.82) with also a trend towards higher myocardial infarction rate (2.39% vs. 1.42%, p=0.077; OR 1.70 (95% CI: 0.95–3.03) and cardiovascular death (1.27% vs. 1.14%, p=0.76, OR 1.11 (95% CI: 0.56–2.21) at 6 months follow up.
Clinical outcome at 6 months Total Off-label On-label p-value* OR (95%-CI) Patients with 6m FU record 99.0% 99.0% 99.1% 0.82 0.92 (0.43–1.95) Confirmed cardiovascular death 1.22% 1.27% 1.14% 0.76 1.11 (0.56–2.21) Confirmed non-cardiovascular death 0.22% 0.14% 0.38% 0.18 0.37 (0.08–1.66) Cause unknown 0.22% 0.28% 0.09% 0.29 2.97 (0.36–24.73) Hospitalisation 27.5% 27.9% 26.7% 0.51 1.06 (0.89–1.27) MI 2.07% 2.39% 1.42% 0.07 1.70 (0.95–3.03) ARC definite scaffold thrombosis 1.10% 1.36% 0.57% 0.04 2.41 (1.00–5.82) TLF 2.70% 3.00% 2.09% 0.13 1.45 (0.89–2.37) TVF 3.98% 4.31% 3.32% 0.18 1.31 (0.88–1.95) MACE 4.33% 4.64% 3.70% 0.22 1.27 (0.87–1.85) Values are mean ± standard deviation (SD) or number and percentage (n, %). *Comparison between off-label and on-label use. The p-values are from Chi-squared test or Mann-Whitney-Wilcoxon test. ARC, academic research consortium; FU, follow up; MACE, major adverse cardiac events; PCI, percutaneous coronary intervention; TLF, target lesion failure; TVF, target vessel failure.
Kaplan-Meyer curve stent thrombosis
Conclusions
The off-label use of BRS compared to confirmed indications appears to be associated with a higher rate of clinical endpoints considering more complex lesions and higher morbidity in this patients' group.
Acknowledgement/Funding
This research was supported by a grant from Abbott Vascular.
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P798Outcome of percutaneous coronary intervention with everolimus-eluting bioresorbable vascular scaffolds in patients with STEMI as compared to stable CAD 2 year results from the German-Austrian ABSORB. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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233Significant differences in captured debris between different valve types captured by the sentinel dual-filter cerebral embolic protection during transcatheter aortic valve replacement. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Matched comparison of next- and early-generation balloon-expandable transcatheter heart valve implantations in failed surgical aortic bioprostheses. EUROINTERVENTION 2018; 14:e397-e404. [PMID: 29688174 DOI: 10.4244/eij-d-17-00546] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
AIMS Transcatheter valve-in-valve implantation (VinV) is established for the treatment of degenerated surgical bioprostheses in patients at high operative risk. Our aim was to report on the first large assessment of VinV with next-generation balloon-expandable transcatheter heart valves. METHODS AND RESULTS After SAPIEN XT or SAPIEN 3 VinV, 514 patients were analysed using an inverse probability of treatment weighting. Standardised clinical and haemodynamic outcomes were compared, and core laboratory evaluation of implantation depth was performed. Thirty-day all-cause mortality was 0.6% and 3.5% for SAPIEN 3 and SAPIEN XT (p=0.077). Residual transprosthetic gradient ≥20 mmHg was observed in 38.3% (SAPIEN 3) and 35.7% (SAPIEN XT) of patients (p=0.627) with increased rates in small bioprostheses (≤21 mm true ID). In SAPIEN 3 VinV, low implantation depth >20% THV stent frame length was associated with a higher rate of elevated transaortic gradients (p=0.048). Similarly, an implantation depth >5 mm was linked to more pacemaker implantations (p=0.01). Overall, a trend towards higher pacemaker implantation rates was observed after SAPIEN 3 VinV (6% vs. 2.5% in SAPIEN XT, p=0.071). CONCLUSIONS Transcatheter aortic VinV with the balloon-expandable SAPIEN XT or SAPIEN 3 was similarly safe and effective. However, residual stenosis remains a concern, particularly in smaller bioprostheses and with increasing implantation depth.
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Clinical restenosis and its predictors after implantation of everolimus-eluting bioresorbable vascular scaffolds: results from GABI-R. EUROINTERVENTION 2017. [DOI: 10.4244/eij-d-17-00291] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Everolimus-eluting bioresorbable scaffolds in patients with coronary artery disease: results from the German-Austrian ABSORB RegIstRy (GABI-R). EUROINTERVENTION 2017; 13:1311-1318. [DOI: 10.4244/eij-d-17-00330] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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P6324Predictors of permanent pacemaker implantation after transfemoral aortic valve implantation with the repositionable lotus valve. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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SIGNIFICANT REDUCTION OF CEREBRAL ISCHEMIC EVENTS WITH THE SENTINEL CEREBRAL EMBOLI PROTECTION DEVICE IN PATIENTS WITH TRANSCATHETER AORTIC VALVE REPLACEMENT. J Am Coll Cardiol 2017. [DOI: 10.1016/s0735-1097(17)34370-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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ONE YEAR OUTCOME IN PATIENTS UNDERGOING TRANSFEMORAL AORTIC VALVE REPLACEMENT (TAVR) WITH THE REPOSITIONABLE AND RETRIEVABLE BOSTON SCIENTIFIC LOTUS VALVE COMPARED WITH THE BALLOON-EXPANDABLE EDWARDS SAPIEN 3 DEVICE. J Am Coll Cardiol 2017. [DOI: 10.1016/s0735-1097(17)34689-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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POST-MARKET EVALUATION OF A FULLY REPOSITIONABLE AND RETRIEVABLE AORTIC VALVE IN 750 PATIENTS TREATED IN ROUTINE CLINICAL PRACTICE: AN UPDATE FROM THE RESPOND STUDY. J Am Coll Cardiol 2016. [DOI: 10.1016/s0735-1097(16)32194-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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TRANSFEMORAL AORTIC VALVE IMPLANTATION WITH THE NEW EDWARDS SAPIEN 3 VALVE FOR TREATMENT OF SEVERE AORTIC STENOSIS. J Am Coll Cardiol 2016. [DOI: 10.1016/s0735-1097(16)30408-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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OUTCOMES WITH PREDILATATION VERSUS NO PREDILATATION IN ROUTINE CLINICAL PRACTICE WITH THE LOTUS VALVE: RESULTS FROM THE FIRST 500 PATIENTS ENROLLED IN THE RESPOND STUDY. J Am Coll Cardiol 2016. [DOI: 10.1016/s0735-1097(16)32174-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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TRANSFEMORAL AORTIC VALVE REPLACEMENT WITH THE REPOSITIONABLE LOTUS VALVE COMPARED WITH THE BALLOON-EXPANDABLE EDWARDS SAPIEN 3 VALVE. J Am Coll Cardiol 2015. [DOI: 10.1016/s0735-1097(15)61820-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Changes in left ventricular function and wall motion determined by cardiac magnetic resonance imaging after successful recanalization of true chronic total occlusion in native coronary arteries. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Angiographic and clinical outcomes of paclitaxel coated balloon angioplasty versus uncoated balloon angioplasty in drug eluting stent restenosis: subgroup analysis from the PEPCAD-DES study. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Adenosine blood oxygen level dependent T2-weighted imaging correlates to fractional flow reserve. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Prediction of therapy failure after treatment of instent-restenosis of drug-eluting stents with drug coated balloons. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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SAFETY AND EFFICACY OF CARDIAC CELL THERAPY: FIRST RESULTS OF THE MESS (META–ANALYSIS OF CARDIAC STEM CELL STUDIES) DATABASE INCLUDING INDIVIDUAL PATIENT DATA OF 13 RANDOMIZED AND 3 COHORT STUDIES. J Am Coll Cardiol 2013. [DOI: 10.1016/s0735-1097(13)61633-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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CARDIAC MAGNETIC RESONANCE IMAGING AND PROGNOSIS IN ST-ELEVATION MYOCARDIAL INFARCTION: DATA FROM 1217 PATIENTS DERIVED FROM MULTICENTER STUDIES. J Am Coll Cardiol 2013. [DOI: 10.1016/s0735-1097(13)60805-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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SEQUENT PLEASE WORLD WIDE REGISTRY: EFFICACY OF PACLITAXEL COATED BALLOON ANGIOPLASTY FOR TREATMENT OF DRUG-ELUTING STENT RESTENOSIS COMPARED WITH BARE-METAL STENT RESTENOSIS. J Am Coll Cardiol 2012. [DOI: 10.1016/s0735-1097(12)60332-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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QUANTITATIVE MYOCARDIAL PERFUSION RESERVE AT DIFFERENT MAGNETIC FIELD STRENGTHS FOR DETECTION OF RELEVANT CORONARY ARTERY STENOSIS – A COMPARISON TO FRACTIONAL FLOW RESERVE. J Am Coll Cardiol 2012. [DOI: 10.1016/s0735-1097(12)61240-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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SEQUENT PLEASE WORL WIDE REGISTRY: RESULTS OF PACLITAXEL COATED BALLOON ANGIOPLASTY FOR TREATMENT OF DE-NOVO CORONARY ARTERY DISEASE. J Am Coll Cardiol 2012. [DOI: 10.1016/s0735-1097(12)60058-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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EVEROLIMUS-ELUTING STENTS COMPARED WITH PACLITAXEL-ELUTING STENTS FOR TREATMENT OF DRUG-ELUTING AND BARE-METAL STENT RESTENOSES – AN OBSERVATIONAL REGISTRY. J Am Coll Cardiol 2012. [DOI: 10.1016/s0735-1097(12)60057-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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INTRACORONARY STEM CELL THERAPY IN PATIENTS WITH ACUTE MYOCARDIAL INFARCTION – 36 MONTHS RESULTS OF A RANDOMIZED, DOUBLE-BLIND, PLACEBO CONTROLLED TRIAL WITH SERIAL MRI FOLLOW-UPS. J Am Coll Cardiol 2012. [DOI: 10.1016/s0735-1097(12)60347-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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IMPACT OF PACLITAXEL-ELUTING STENTS IN DIABETIC PATIENTS WITH ACUTE MYOCARDIAL INFARCTION UNDERGOING PRIMARY ANGIOPLASTY: ANALYSIS FROM THE HORIZONS AMI TRIAL. J Am Coll Cardiol 2010. [DOI: 10.1016/s0735-1097(10)61709-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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MRI adenosine fist-pass perfusion analysis using a SSFP sequence – are there gender differences? J Cardiovasc Magn Reson 2009. [PMCID: PMC7860922 DOI: 10.1186/1532-429x-11-s1-p232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Prognostic significance of magnetic resonance imaging parameters in patients with idiopathic dilated cardiomyopathy. J Cardiovasc Magn Reson 2009. [PMCID: PMC7853816 DOI: 10.1186/1532-429x-11-s1-o17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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1041 Assessment of the three-dimensional course of chronic totally occluded coronary arteries. J Cardiovasc Magn Reson 2008. [DOI: 10.1186/1532-429x-10-s1-a166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Smoking influences the atherogenic potential of low-density lipoprotein. THE CLINICAL INVESTIGATOR 1992; 70:263-8. [PMID: 1521040 DOI: 10.1007/bf00184660] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The possible influence of smoking on the low-density lipoprotein (LDL) and its biological activity was investigated. Plasma LDL was prepared from healthy male smokers and nonsmokers, and oxidized with Cu (II) as prooxidant. Oxidized LDL from smokers generated significantly more lipid peroxidation products, so-called thiobarbituric acid reactive substances (TBARS), when compared to oxidized nonsmoker LDL. Analysis of vitamin E levels in LDL obtained from both smokers and nonsmokers revealed that the vitamin E content of smoker LDL was significantly less than that of nonsmoker LDL. The amounts of cholesteryl esters formed in cultured P388. D.1 macrophages were greater in the presence of smoker LDL than with nonsmoker LDL. The data suggest that some of the proatherogenic effects of smoking may be related to oxidative modification of LDL and alteration of its biological activity.
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