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https://www.readbyqxmd.com/read/29136138/calcific-aortic-valve-stenosis-hard-disease-in-the-heart-a-biomolecular-approach-towards-diagnosis-and-treatment
#1
Frederique E C M Peeters, Steven J R Meex, Marc R Dweck, Elena Aikawa, Harry J G M Crijns, Leon J Schurgers, Bas L J H Kietselaer
Calcific aortic valve stenosis (CAVS) is common in the ageing population and set to become an increasing economic and health burden. Once present, it inevitably progresses and has a poor prognosis in symptomatic patients. No medical therapies are proven to be effective in holding or reducing disease progression. Therefore, aortic valve replacement remains the only available treatment option. Improved knowledge of the mechanisms underlying disease progression has provided us with insights that CAVS is not a passive disease...
November 10, 2017: European Heart Journal
https://www.readbyqxmd.com/read/29130612/caliber-and-fitness-of-the-axillary-artery-as-a-conduit-for-large-bore-cardiovascular-procedures
#2
Daniel M Arnett, James C Lee, Michael A Harms, Kathleen E Kearney, Mario Ramos, Bryn M Smith, Emily C Anderson, Rajiv Tayal, James M McCabe
OBJECTIVES: We sought to describe the caliber and vascular health of the subclavian and axillary arteries as related to their potential utilization in complex cardiovascular procedures. BACKGROUND: Patients referred for advanced catheter-based therapies frequently have lower extremity peripheral vascular disease that may prohibit the use of large bore arterial catheters. Utilization of the upper extremity peripheral vasculature is rarely considered as an alternative access strategy...
November 11, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29128867/the-role-of-lipoprotein-a-in-calcific-aortic-valve-disease-insights-from-a-large-cohort-genetic-study
#3
Vidu Garg
No abstract text is available yet for this article.
November 12, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/29126129/tugging-at-heartstrings-control-of-aortic-valve-calcification-by-non-coding-rna
#4
Reinier A Boon
No abstract text is available yet for this article.
November 8, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29121522/effects-of-vitamin-k-antagonist-on-aortic-valve-degeneration-in-non-valvular-atrial-fibrillation-patients-prospective-4-year-observational-study
#5
Kazuhiro Yamamoto, Yukihiro Koretsune, Takashi Akasaka, Akira Kisanuki, Nobuyuki Ohte, Takashi Takenaka, Masaaki Takeuchi, Kiyoshi Yoshida, Kazunori Iwade, Yuji Okuyama, Yutaka Hirano, Yasuharu Takeda, Yasumasa Tsukamoto, Yoshiharu Kinugasa, Satoshi Nakatani, Takashi Sakamoto, Katsuomi Iwakura, Takashi Sozu, Tohru Masuyama
BACKGROUND: The prevalence of atrial fibrillation (AF) is high in elder subjects. Our previous observational study suggested that vitamin K antagonist (VKA) promotes aortic valve degeneration, a principal cause of aortic stenosis in the elderly, and that angiotensin receptor blocker (ARB) attenuates its progression. This study aimed to prospectively investigate these observations in non-valvular AF patients. METHODS: Of enrolled 430 patients with calcification on no or one aortic valve leaflet, all of the planned 4-year follow-up data were obtained in 122 non-valvular AF patients treated with warfarin (warfarin group) and 101 patients with cardiovascular diseases and without AF and prescription of warfarin (non-warfarin group)...
November 6, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/29106835/impact-of-mitral-annular-calcium-on-outcomes-after-transcatheter-aortic-valve-implantation
#6
Marco B Ancona, Francesco Giannini, Antonio Mangieri, Damiano Regazzoli, Richard J Jabbour, Akihito Tanaka, Luca Testa, Vittorio Romano, Matteo Longoni, Manuela Giglio, Francesca Besana, Michele Cacucci, Eustachio Agricola, Alaide Chieffo, Ottavio Alfieri, Matteo Montorfano, Antonio Colombo, Azeem Latib
A high prevalence of mitral annular calcium (MAC) is expected in patients undergoing transcatheter aortic valve implantation (TAVI); however, data regarding the prevalence of MAC and impact on risk of cardiovascular events are lacking. To determine the prevalence of MAC and its association with clinical outcomes in patients undergoing TAVI, we retrospectively analyzed 424 patients who underwent transfemoral TAVI from 2007 to 2015 and whose preoperative computed tomography images were available for assessment of MAC...
September 18, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29105964/simultaneous-transcatheter-transfemoral-aortic-and-transeptal-mitral-valve-replacement-using-edward-sapien-s3
#7
Zaher Fanari, Hadi Mahmaljy, Shalish Nandish, Nilesh J Goswami
Patients with concomitant severe aortic stenosis (AS) and severe mitral stenosis (MS) with mitral annular calcification (MAC) constitute an elderly high-risk population with multiple baseline comorbidities that coexist even before they develop severe valvular dysfunction. Transcatheter mitral valve replacements (TMVR) offer an alternative option for high-risk patient with severe MS with MAC. A simultaneous transfemoral Transcatheter aortic valve replacement (TAVR) and transseptal TMVR is feasible and offers the least invasive approach of management...
November 6, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29105953/comparison-of-self-expanding-and-balloon-expandable-transcatheter-aortic-valves-morphology-and-association-with-paravalvular-regurgitation-evaluation-using-multidetector-computed-tomography
#8
João G Almeida, Sara M Ferreira, Paulo Fonseca, Tiago Dias, Cláudio Guerreiro, Ana Barbosa, Pedro Teixeira, Mónica Carvalho, Wilson Ferreira, Nuno D Ferreira, Pedro Braga, José Ribeiro, Vasco G Ribeiro
OBJECTIVES: Compare final morphology of self-expanding and balloon-expandable prosthesis and association with paravalvular regurgitation (PVR). BACKGROUND: PVR after transcatheter aortic valve replacement (TAVR) remains a frequent complication. A better understanding of the prosthesis geometry may be important to improve selection of the best device for each case and possibly reduce the rates of PVR. METHODS: Retrospective study including patients consecutively submitted to transcatheter aortic valve replacement: August/2007-October/2016...
November 6, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/29105493/a-7-year-single-center-experience-of-transfemoral-tavi-evolution-of-surgical-activity-and-impact-on-vascular-outcome
#9
Fabien Lareyre, Juliette Raffort, Carine Dommerc, Yacoub Habib, François Bourlon, Claude Mialhe
Transcatheter aortic valve implantation (TAVI) has become a well-established alternative to open surgery to treat aortic stenosis. We describe our 7-year TAVI experience using transfemoral access and identity changes in surgical activity and evaluate its impact on postoperative vascular outcomes. Consecutive patients (N = 340) who underwent TAVI with percutaneous transfemoral access were retrospectively included and divided into 4 quartiles according to the date of intervention. Vascular outcomes were classified according to the Valve Academic Research Consortium 2 classification...
January 1, 2017: Angiology
https://www.readbyqxmd.com/read/29102206/morphologic-and-histologic-findings-in-bioprosthetic-valves-explanted-from-the-mitral-position-in-children-younger-than-5-years-of-age
#10
Laura Gellis, Christopher W Baird, Sitaram Emani, Michele Borisuk, Kimberlee Gauvreau, Robert F Padera, Stephen P Sanders
BACKGROUND: Mitral valve replacement (MVR) in very young children is challenging. This study investigates the mechanisms for early bioprosthetic valve failure in very young patients through review of the macroscopic and microscopic findings in explanted bioprosthetic valves. METHODS: Patients who underwent MVR with a bioprosthetic valve at Boston Children's Hospital between January 2010 to April 2016 at <5 years of age were the subjects of this study. Valve failure was defined as prosthetic mitral valve explantation with mitral valve re-replacement...
September 28, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29101018/tissue-processing-techniques-for-fabrication-of-covered-stents-for-small-diameter-vascular-intervention
#11
Shahar Cohen, Smadar Magal, Itay Yakov, Evyatar Sirabella, Anna Bitman, Gabriel Groisman, Chaim Lotan
Animal-derived pericardial tissue is a widely used biomaterial typically treated with glutaraldehyde (GA) to achieve immunological acceptance and long-term durability. However, GA fixation of biological tissue is associated with long-term failure due to degeneration and calcification. In this study, we evaluated two alternative tissue processing methods for the fabrication of pericardial tissue covered stents: detergent-based decellularization (decell) and limited exposure to GA (gentle-glut). Processed pericardial tissues were extensively characterized both in-vitro and in-vivo...
October 31, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29100595/a-strain-based-finite-element-model-for-calcification-progression-in-aortic-valves
#12
Amirhossein Arzani, Mohammad R K Mofrad
Calcific aortic valve disease (CAVD) is a serious disease affecting the aging population. A complex interaction between biochemicals, cells, and mechanical cues affects CAVD initiation and progression. In this study, motivated by the progression of calcification in regions of high strain, we developed a finite element method (FEM) based spatial calcification progression model. Several cardiac cycles of transient structural FEM simulations were simulated. After each simulation cycle, calcium deposition was placed in regions of high circumferential strain...
October 31, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29100062/thoracic-extra-coronary-calcification-for-the-prediction-of-stroke-the%C3%A2-multi-ethnic-study-of-atherosclerosis
#13
Sina Kianoush, Mahmoud Al Rifai, Miguel Cainzos-Achirica, Mouaz H Al-Mallah, Geoffrey H Tison, Joseph Yeboah, Michael D Miedema, Matthew A Allison, Nathan D Wong, Andrew P DeFilippis, William Longstreth, Khurram Nasir, Matthew J Budoff, Kunihiro Matsushita, Michael J Blaha
BACKGROUND AND AIMS: Atherosclerosis is a systemic disease. We examined whether the cumulative burden of thoracic extra-coronary calcification (ECC) improves prediction of stroke, transient ischemic attack (TIA), and stroke mortality beyond traditional risk factors and coronary artery calcium (CAC). METHODS: We followed a total of 6805 participants (mean age 62.1 ± 10.2 years, 47.2% male) from the Multi-Ethnic Study of Atherosclerosis (MESA) over a median of 12...
October 7, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29093429/echocardiographic-assessment-of-cardiac-structural-and-functional-abnormalities-in-patients-with-end-stage-renal-disease-receiving-chronic-hemodialysis
#14
Hiroshi Matsuo, Kaoru Dohi, Hirofumi Machida, Hideyuki Takeuchi, Toshikazu Aoki, Hiroyuki Nishimura, Masashi Yasutomi, Michiharu Senga, Takehiko Ichikawa, Kentaro Kakuta, Yasuhide Mizutani, Akiko Tanoue, Naoki Isaka, Kazuki Oosugi, Sukenari Koyabu, Masato Sakurai, Yoshihisa Fukui, Hitoshi Kakimoto, Tadafumi Sugimoto, Takahiro Ohnishi, Tomohiro Murata, Eiji Ishikawa, Ryuji Okamoto, Tomomi Yamada, Toru Ogura, Yuki Nishimura, Takashi Tanigawa, Shinsuke Nomura, Masakatsu Nishikawa, Masaaki Ito
BACKGROUND: The aim of this study was to assess the echocardiographic characteristics of chronic hemodialysis (HD) patients with end-stage renal disease (ESRD) in a multicenter prospective cohort study.Methods and Results:Three hundred and fifteen patients with ESRD (67.9±10.6 years, 47.6% male) on chronic HD for ≥1 year were examined on transthoracic echocardiography, including Doppler-derived aortic valve area (AVA) measurement. Only 11.5% and 3.4% of all patients had normal left ventricular (LV) geometry and normal LV filling pattern, respectively...
October 31, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29092119/mir-92a-a-novel-potential-biomarker-of-rapid-aortic-valve-calcification
#15
Joseph Nader, Valérie Metzinger-Le Meuth, Pierre Maitrias, Jean-Régis Humbert, Benjamin Brigant, Christophe Tribouilloy, Laurent Metzinger, Thierry Caus
BACKGROUND: The study aim was to compare the tissular expression of microRNAs (miRs) in bicuspid and tricuspid valves, and to evaluate their use as potential novel biomarkers of aortic valve calcification in bicuspid valves. METHODS: A prospective single-center observational study was conducted on stenotic bicuspid and tricuspid human aortic valves. According to their potential role in valve vascular and valvular calcification, a decision was taken to include miR- 92a, miR-141, and miR-223 in this analysis...
May 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29092109/epicardial-adipose-tissue-thickness-independently-predicts-severe-aortic-valve-stenosis
#16
Amir A Mahabadi, Heike A Kahlert, Iryna Dykun, Bastian Balcer, Philipp Kahlert, Tienush Rassaf
BACKGROUND: Epicardial fat tissue (EAT) is associated with coronary as well as aortic valve calcification. The study aim was to determine whether EAT thickness is different in patients with and without aortic valve stenosis (AVS). METHODS: A cohort of 200 consecutive patients with severe AVS and 200 matched patients without AVS were included retrospectively in the study. EAT thickness was quantified, using transthoracic echocardiography, as the space between the epicardial wall of the myocardium and the visceral layer of the pericardium...
May 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/29075334/association-of-body-mass-index-and-visceral-fat-with-aortic-valve-calcification-and-mortality-after-transcatheter-aortic-valve-replacement-the-obesity-paradox-in-severe-aortic-stenosis
#17
Jennifer Mancio, Paulo Fonseca, Bruno Figueiredo, Wilson Ferreira, Monica Carvalho, Nuno Ferreira, Pedro Braga, Alberto Rodrigues, Antonio Barros, Ines Falcao-Pires, Adelino Leite-Moreira, Vasco Gama Ribeiro, Nuno Bettencourt
BACKGROUND: Previous studies showed that metabolic syndrome is associated with aortic valve calcification (AVC) and poor outcomes in aortic stenosis (AS). However, if these associations change and how body fat impacts the prognosis of patients in late stage of the disease have been not yet explored. AIMS: To determine the association of body mass index (BMI) and visceral fat with AVC and mortality after transcatheter aortic valve replacement (TAVR). METHODS: This was a prospective cohort of 170 severe AS patients referred to TAVR...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/29057501/different-approaches-to-heart-valve-decellularization-a-comprehensive-overview-of-the-past-30%C3%A2-years
#18
REVIEW
Filippo Naso, Alessandro Gandaglia
Xenogeneic decellularized heart valve scaffolds have the potential to overcome the limitations of existing bioprosthetic heart valves that have limited duration due to calcification and tissue degeneration phenomena. This article presents a review of 30 years of decellularization approaches adopted in cardiovascular tissue engineering, with a focus on the use, either individually or in combination, of different detergents. The safety and efficacy of cell-removal procedures are specifically reported and discussed, as well as the structure and biomechanics of the treated extracellular matrix (ECM)...
October 22, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/29053434/alpha-gal-inactivated-heart-valve-bioprostheses-exhibit-an-anti-calcification-propensity-similar-to-knockout-tissues
#19
Filippo Naso, Ugo Stefanelli, Edward Buratto, Giovanna Lazzari, Andrea Perota, Cesare Galli, Alessandro Gandaglia
BACKGROUND: Glutaraldehyde (GLA) has been used to crosslink bioprosthetic heart valve (BHVs) tissues to enhance their stability, besides ensuring a satisfactory degree of immunological tolerance. Unfortunately, GLA fixation does not guarantee a complete tissue biocompatibility of BHVs in currently used devices. The interaction between preformed human anti-alpha-Gal antibody and alpha-Gal antigens promotes the calcification of GLA-treated alpha-Gal-positive tissue. Recently, an alarming correlation between the presence of the alpha-Gal epitope and a premature BHVs degeneracy was reported...
October 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29050736/-complicated-transcatheter-aortic-valve-endocarditis-with-abscess-and-pseudoaneurysm-value-of-the-ecg-gated-multidetector-computed-tomography-angiography
#20
S Pichard, G Gibault-Genty, A Vienet-Legue, N Baron, R Convers-Domart, J L Georges, B Livarek
A 80-year-old man was admitted to catheterization room for an acute infero-lateral ST-elevation myocardial infarction (STEMI). Coronary angiography showed a thrombotic occlusion of the second left marginal branch, and normal other coronary arteries. The thrombo-embolic mechanism of the STEMI, and the infectious context in this patient who had had a transcatheter aortic valve implantation (TAVI) two months earlier, led us to suspect a bioprosthesis endocarditis. It was confirmed by transthoracic and transoesophageal echocardiography, which showed an aortic-mitral curtain abscess and aortic bioprosthesis vegetations, associated to Enterococcus faecalis bacteriemia...
November 2017: Annales de Cardiologie et D'angéiologie
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