8 results on '"OSCAR Study Group."'
Search Results
2. An angiotensin II receptor blocker–calcium channel blocker combination prevents cardiovascular events in elderly high-risk hypertensive patients with chronic kidney disease better than high-dose angiotensin II receptor blockade alone
- Author
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Kim-Mitsuyama, Shokei, Ogawa, Hisao, Matsui, Kunihiko, Jinnouchi, Tomio, Jinnouchi, Hideaki, Arakawa, Kikuo, and for the OSCAR Study Group
- Published
- 2013
- Full Text
- View/download PDF
3. The Effect of Adjunctive Antibiotic Oral Therapy on the Recurrence of Infective Endocarditis After Valve Surgeries.
- Author
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Suzuki, Kota, Yoshioka, Daisuke, Toda, Koichi, Miyagawa, Shigeru, Yoshikawa, Yasushi, Sakaniwa, Ryoto, Sawa, Yoshiki, and Osaka Cardiovascular Research (OSCAR) Study Group
- Abstract
Adjunctive oral antibiotics following intravenous antibiotics are administered after valve surgery in some patients with active infective endocarditis (IE); however, little is known about their efficacy. Therefore, we evaluated the effect of adjunctive antibiotic oral therapy after IE surgeries. Between 2009 and 2017, 585 patients underwent valve surgery for left-sided active IE at 14 hospitals. Patients who died during hospitalization or transferred with intravenous antibiotics were excluded. Of the remaining 460 patients, 239 were treated with oral antibiotics at discharge (group O) and 221 did not take the oral antibiotic (group N). The primary outcome was all-cause mortality. Secondary outcomes were the recurrence of IE and a subset analysis of it. The 2 groups had similar background, postoperative inflammatory responses, and an almost similar duration of postoperative intravenous antibiotics. The overall survival rates at 1 and 5 years were 96% and 88% in group O and 92% and 84% in group N, respectively (P = 0.425). The rates of freedom from the recurrence of endocarditis at 1 and 5 years were 98% and 94% in group O and 97% and 93% in group N, respectively (P = 0.309). In chronic hemodialysis patients, the rates of freedom from the recurrence were significantly higher in group O than in group N (1 year: 100% vs 87.5%; 5 years: 95% vs 69%, P = 0.022). Adjunctive oral antibiotics following intravenous antibiotics in patients with active IE after valve surgery did not affect the overall survival and recurrence of IE, except in chronic hemodialysis patients. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
4. An angiotensin II receptor blocker-calcium channel blocker combination prevents cardiovascular events in elderly high-risk hypertensive patients with chronic kidney disease better than high-dose angiotensin II receptor blockade alone
- Author
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Shokei Kim-Mitsuyama, Hisao Ogawa, Kunihiko Matsui, Tomio Jinnouchi, Hideaki Jinnouchi, Kikuo Arakawa, and null for the OSCAR Study Group
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Male ,medicine.medical_specialty ,Angiotensin receptor ,Combination therapy ,medicine.drug_class ,Renal function ,Blood Pressure ,Calcium channel blocker ,Comorbidity ,Pharmacology ,urologic and male genital diseases ,high-dose ARB ,combination therapy ,Angiotensin Receptor Antagonists ,Japan ,cardiovascular disease ,Internal medicine ,CKD ,Medicine ,Humans ,Prospective Studies ,Renal Insufficiency, Chronic ,Prospective cohort study ,Letter to the Editor ,Aged ,Aged, 80 and over ,Dose-Response Relationship, Drug ,business.industry ,Incidence ,medicine.disease ,Calcium Channel Blockers ,Clinical Trial ,female genital diseases and pregnancy complications ,Blood pressure ,Treatment Outcome ,Nephrology ,Cardiovascular Diseases ,Heart failure ,Hypertension ,Cardiology ,Drug Therapy, Combination ,Female ,business ,Kidney disease ,Glomerular Filtration Rate - Abstract
The OSCAR study was a multicenter, prospective randomized open-label blinded end-point study of 1164 Japanese elderly hypertensive patients comparing the efficacy of angiotensin II receptor blocker (ARB) uptitration to an ARB plus calcium channel blocker (CCB) combination. In this prospective study, we performed prespecified subgroup analysis according to baseline estimated glomerular filtration rate (eGFR) with chronic kidney disease (CKD) defined as an eGFR
- Published
- 2012
5. Identification and structural characterization of novel genetic elements in the HIV-1 V3 loop regulating coreceptor usage
- Author
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Svicher, V, Alteri, C, Artese, A, Zhang, Jm, Costa, G, Mercurio, F, D'Arrigo, R, Alcaro, S, Palu', Giorgio, Clementi, Maurizio, Zazzi, M, Andreoni, M, Antinori, A, Lazzarin, A, Ceccherini Silberstein, F, Perno, Cf, OSCAR study group, Svicher, V, Alteri, C, Artese, A, Zhang, Jm, Costa, G, Mercurio, F, D'Arrigo, R, Alcaro, S, Palu, G, Clementi, Massimo, Zazzi, M, Andreoni, M, Antinori, A, Lazzarin, Adriano, Ceccherini Silberstein, F, and Perno, Cf
- Subjects
Receptors, CXCR4 ,Receptors, CCR5 ,Sequence analysis ,viruses ,Molecular Sequence Data ,V3 loop ,HIV Envelope Protein gp120 ,Molecular Dynamics Simulation ,medicine.disease_cause ,03 medical and health sciences ,chemistry.chemical_compound ,Mole ,medicine ,Cluster Analysis ,Humans ,Pharmacology (medical) ,Tropism ,030304 developmental biology ,Pharmacology ,Genetics ,0303 health sciences ,Mutation ,Base Sequence ,030306 microbiology ,virus diseases ,Bayes Theorem ,Sequence Analysis, DNA ,Virus Internalization ,Settore MED/07 - Microbiologia e Microbiologia Clinica ,Peptide Fragments ,3. Good health ,N-terminus ,Infectious Diseases ,chemistry ,HIV-1 ,DNA ,Trofile assay - Abstract
Background The interaction between HIV-1 gp120 and CCR5 N terminus is critical for R5-virus entry and affects CCR5 antagonists’ activity. Knowledge of how different genetic signatures of gp120 V3 domain effect the strength of this interaction is limited. Methods HIV-1 coreceptor usage was assessed in 251 patients using enhanced-sensitivity Trofile assay and V3 sequencing plus tropism prediction by Geno2pheno algorithm. Bayesian partitional model and recursive model selection have been used to define V3 genetic determinants correlated with different coreceptor usage. Gp120 interaction with CCR5 N terminus was evaluated by docking-analysis/molecular–dynamic simulations starting from the model described previously. Results Selected V3 genetic determinants (beyond known aminoacidic positions) significantly correlate with CCR5-or CXCR4-usage, and modulate gp120 affinity for CCR5 N terminus. This is the case for N5Y and N7K, absent in CCR5-using viruses and present in 4.5% and 6% of CXCR4-using viruses, respectively, and A19V, occurring in 2.6% of CCR5-using viruses and 22.0% of CXCR4-using viruses ( P=10-2 to 10-7). Their presence determines a decreased affinity for CCR5 N terminus even stronger than that observed in the presence of the well-known mutation S11R (N5Y: -6.60 Kcal/mol; N7K: -5.40 Kcal/mol; A19V: -5.60 Kcal/mol; S11R: -6.70 Kcal/mol; WT: -6.90 Kcal/mol). N7K significantly increases the distance between V3 position 7 and sulphotyrosine at CCR5 position 14 (crucial for binding to gp120; from 4.22 Å to 8.30 Å), thus abrogating the interaction between these two important residues. Conclusions Key determinants for tropism within the V3 sequence, confirmed by structure- and by phenotypictropism, have been identified. This information can be used for a finer tuning of potential efficacy of CCR5-antagonists in clinical practice, and to provide molecular implications for design of new entry inhibitors.
- Published
- 2011
6. Performance of genotypic tropism testing in clinical practice using the enhanced sensitivity version of Trofile as reference assay: results from the OSCAR Study Group
- Author
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Svicher, V, D'Arrigo, R, Alteri, C, Andreoni, M, Angarano, G, Antinori, A, Antonelli, G, Bagnarelli, P, Baldanti, F, Bertoli, A, Borderi, M, Boeri, E, Bonn, I, Bruzzone, B, Callegaro, Ap, Cammarota, R, Canducci, F, Ceccherini Silberstein, F, Clementi, M, Monforte, Ad, De Luca, Andrea, Di Biagio, A, Di Giambenedetto, Simona, Di Perri, G, Di Pietro, M, Fabeni, L, Fadda, Giovanni, Galli, M, Gennari, W, Ghisetti, V, Giacometti, A, Gori, A, Leoncini, F, Maggiolo, F, Maserati, R, Mazzotta, F, Micheli, V, Meini, G, Monno, L, Mussini, C, Nozza, S, Paolucci, S, Parisi, S, Pecorari, M, Pizzi, D, Quirino, T, Re, Mc, Rizzardini, G, Santangelo, Rosaria, Soria, A, Stazi, F, Sterrantino, G, Turriziani, O, Viscoli, C, Vullo, V, Lazzarin, A, Perno, Cf, Oscar, Study Group, De Luca, Andrea (ORCID:0000-0002-8311-6935), Di Giambenedetto, Simona (ORCID:0000-0001-6990-5076), Santangelo, Rosaria (ORCID:0000-0002-8056-218X), Svicher, V, D'Arrigo, R, Alteri, C, Andreoni, M, Angarano, G, Antinori, A, Antonelli, G, Bagnarelli, P, Baldanti, F, Bertoli, A, Borderi, M, Boeri, E, Bonn, I, Bruzzone, B, Callegaro, Ap, Cammarota, R, Canducci, F, Ceccherini Silberstein, F, Clementi, M, Monforte, Ad, De Luca, Andrea, Di Biagio, A, Di Giambenedetto, Simona, Di Perri, G, Di Pietro, M, Fabeni, L, Fadda, Giovanni, Galli, M, Gennari, W, Ghisetti, V, Giacometti, A, Gori, A, Leoncini, F, Maggiolo, F, Maserati, R, Mazzotta, F, Micheli, V, Meini, G, Monno, L, Mussini, C, Nozza, S, Paolucci, S, Parisi, S, Pecorari, M, Pizzi, D, Quirino, T, Re, Mc, Rizzardini, G, Santangelo, Rosaria, Soria, A, Stazi, F, Sterrantino, G, Turriziani, O, Viscoli, C, Vullo, V, Lazzarin, A, Perno, Cf, Oscar, Study Group, De Luca, Andrea (ORCID:0000-0002-8311-6935), Di Giambenedetto, Simona (ORCID:0000-0001-6990-5076), and Santangelo, Rosaria (ORCID:0000-0002-8056-218X)
- Published
- 2010
7. Performance of genotypic tropism testing in clinical practice using the enhanced sensitivity version of Trofile as reference assay: Results from the OSCAR Study Group
- Author
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Svicher V, D'Arrigo R, Alteri C, Andreoni M, Angarano G, Antinori A, Antonelli G, Bagnarelli P, Baldanti F, Bertoli A, Boeri E, Bruzzone B, Callegaro AP, Cammarota R, Canducci F, Ceccherini Silberstein F, Clementi M, Monforte AD, De Luca A, Di Biagio A, Di Gianbenedetto S, Di Perri G, Di Pietro M, Fabeni L, Fadda G, Galli M, Gennari W, Ghisetti V, Giacometti A, Gori A, Leoncini F, Maggiolo F, Maserati R, Mazzotta F, Micheli V, Meini G, Monno L, Mussini C, Nozza S, Paolucci S, Parisi S, Pecorari M, Pizzi D, Quirino T, Rizzardini G, Santangelo R, Soria A, Stazi F, Sterrantino G, Turriziani O, Viscoli C, Vullo V, Lazzarin A, Perno CF, OSCAR Study Group, BORDERI, MARCO, BON, ISABELLA, RE, MARIA CARLA, Svicher V, D'Arrigo R, Alteri C, Andreoni M, Angarano G, Antinori A, Antonelli G, Bagnarelli P, Baldanti F, Bertoli A, Borderi M, Boeri E, Bonn I, Bruzzone B, Callegaro AP, Cammarota R, Canducci F, Ceccherini-Silberstein F, Clementi M, Monforte AD, De Luca A, Di Biagio A, Di Gianbenedetto S, Di Perri G, Di Pietro M, Fabeni L, Fadda G, Galli M, Gennari W, Ghisetti V, Giacometti A, Gori A, Leoncini F, Maggiolo F, Maserati R, Mazzotta F, Micheli V, Meini G, Monno L, Mussini C, Nozza S, Paolucci S, Parisi S, Pecorari M, Pizzi D, Quirino T, Re MC, Rizzardini G, Santangelo R, Soria A, Stazi F, Sterrantino G, Turriziani O, Viscoli C, Vullo V, Lazzarin A, Perno CF, and OSCAR Study Group.
- Subjects
Male ,Protein Structure ,trafile ,Receptors, CCR5 ,Genotype ,Settore MED/17 - Malattie Infettive ,HIV ,viral load ,AIDS ,hiv ,HIV Infections ,HIV Envelope Protein gp120 ,v3 loop ,Receptors ,Humans ,Viral Tropism ,Protein Structure, Tertiary ,HIV-1 ,Female ,Receptors, Virus ,tropism ,virus diseases ,genotypic tropism testing ,OSCAR Study Group ,Settore MED/07 - Microbiologia e Microbiologia Clinica ,Virus ,genotypic tropism ,CCR5 Receptor Antagonists ,CCR5 ,Tertiary - Abstract
Objective: The goal of the OSCAR programme is to evaluate the performances of genotypic HIV-1 tropism testing in clinical practice using the enhanced sensitivity version of Trafile (ESTA) as reference-assay. Methods: HIV-1 coreceptor-usage was assessed using plasma samples from 406 HIV-1 infected patients by ESTA and by gp120 V3 population-sequencing followed by Geno2pheno (set at a False Positive Rate [FPR] of 10% and 5%). Results: ESTA was successful in 365 (89.9%) samples indicating R5 in 254 (69.6%), and DM/X4 in 111 (30.4% of samples (104 [28.5%] DM and 7 [1.9%] X4). Genotypic-testing successfully assessed viral tropism for all 406 samples, including the 41 with undetermined result by ESTA. Genotypic-tropism testing at a FPR of 5% and 10% was 81.1% and 78.4% concordant with ESTA, respectively. Despite a sensitivity of 48.7% and 55.9% at a FPR of 5% and 10%, respectively, a high concordance (specificity: 95.3% for FPR of 5% and 88.2% for FPR of 10%) between genotypic-tropism testing and ESTA was reached in the detection of R5-tropic viruses. Conclusion: Our results are in line with other European studies, and support the routine use of genotypic tropism testing in clinical-settings for monitoring of HIV-1 infected patients candidate to or failing CCR5-antagonists.
8. Restrictive Mitral Annuloplasty With or Without Papillary Muscle Approximation for Functional Mitral Regurgitation.
- Author
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Misumi Y, Masai T, Toda K, Nakamura T, Miyagawa S, Yoshikawa Y, Fukushima S, Saito S, Domae K, Kainuma S, Ueno T, Kuratani T, Daimon T, and Sawa Y
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- Aged, Chi-Square Distribution, Disease Progression, Disease-Free Survival, Echocardiography, Doppler, Color, Female, Heart Failure etiology, Heart Failure physiopathology, Humans, Kaplan-Meier Estimate, Male, Middle Aged, Mitral Valve diagnostic imaging, Mitral Valve physiopathology, Mitral Valve Annuloplasty adverse effects, Mitral Valve Annuloplasty mortality, Mitral Valve Insufficiency diagnostic imaging, Mitral Valve Insufficiency mortality, Mitral Valve Insufficiency physiopathology, Myocardial Contraction, Papillary Muscles diagnostic imaging, Papillary Muscles physiopathology, Patient Readmission, Propensity Score, Recovery of Function, Retrospective Studies, Risk Factors, Stroke Volume, Time Factors, Treatment Outcome, Ventricular Function, Left, Mitral Valve surgery, Mitral Valve Annuloplasty methods, Mitral Valve Insufficiency surgery, Papillary Muscles surgery
- Abstract
Background and Aim of the Study: The impact of adding papillary muscle approximation (PMA) to restrictive mitral annuloplasty (RMA) on postoperative left ventricular (LV) function is unknown. Changes in LV function parameters and clinical outcome were evaluated following RMA with and without PMA in patients with clinically relevant functional mitral regurgitation (FMR)., Methods: A total of 176 patients with advanced cardiomyopathy underwent RMA either with (n = 59) or without (n = 117) PMA. Propensity score analysis was used to adjust for group differences in several baseline characteristics, such as age, gender and LV ejection fraction (LVEF) (C-statistic = 0.80, goodness-of-fit value = 0.58)., Results: Serial echocardiography in 30 propensity score-matched pairs demonstrated decreases in LV end-systolic dimension (RMA alone: 57 ± 9 mm at baseline versus 54 ±11 mm at one month versus 56 ± 13 mm at latest examination; RMA + PMA: 56 ± 8 mm versus 53 ± 9 mm versus 48 ± 11 mm, respectively) and improvement in LVEF (RMA alone: 28 ± 8% versus 28 ± 11% versus 29 ± 10%; RMA + PMA: 30 ± 8% versus 30 ± 9% versus 36 ± 13%, respectively) in both groups. Greater degrees of changes in value were noted for patients receiving RMA + PMA (group effect p <0.05 for both). The two-year survival of both groups was similar (73 ± 8% versus 77 ± 23%, p = 0.7), but the RMA + PMA group showed a trend towards a greater freedom from composite events, defined as mortality and/or unscheduled heart failure re-admission (48 ± 9% versus 63 ± 9%, p = 0.1)., Conclusions: RMA + PMA induced greater long-term effects on unloading of the left ventricle and improvements in LV systolic function than did RMA alone. PMA may be a useful adjunct repair in combination with RMA, although its clinical benefits remain to be determined.
- Published
- 2017
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