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https://www.readbyqxmd.com/read/28636901/the-effect-of-cd34-cell-telomere-length-and-htert-expression-on-the-outcome-of-autologous-cd34-cell-transplantation-in-patients-with-chronic-heart-failure
#1
Jasmina-Ziva Rozman, Maja Pohar Perme, Mojca Jez, Elvira Malicev, Metka Krasna, Srdjan Novakovic, Bojan Vrtovec, Primoz Rozman
Age-related telomere attrition in stem/progenitor cells may diminish their functional capacity and thereby impair the outcome of cell-based therapies. The aim of the present study was to investigate the effect of CD34(+) cell telomere length and hTERT expression on the clinical outcome of autologous CD34(+) cell transplantation. We studied 43 patients with cardiomyopathy. Their peripheral blood CD34(+) cells were mobilized with granulocyte colony-stimulating factor, enriched by immunoselection and delivered transendocardially...
June 18, 2017: Mechanisms of Ageing and Development
https://www.readbyqxmd.com/read/28636525/prognostic-significance-of-improvement-in-right-ventricular-systolic-function-during-cardiac-resynchronization-therapy
#2
Frederik Helsen, Alexander Van De Bruaene, Charlien Gabriels, Mathias Claeys, Els Troost, Gábor Vörös, Rik Willems, Jens-Uwe Voigt, Werner Budts
Objectives There is conflicting evidence concerning the role of right ventricular (RV) systolic dysfunction in the long-term clinical outcome after cardiac resynchronization therapy (CRT). Therefore we aimed to assess evolution of RV systolic function during CRT, covariates associated with its improvement, and its impact on outcome. Methods and results All CRT device implantations (Jan 2009-Dec 2011) in our institution were reviewed. Records of 69 patients (25% female, mean age 62.8 ± 9.2 years, mean left ventricular (LV) ejection fraction 27 ± 8%) were analyzed...
March 31, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28631410/coronary-artery-bypass-grafting-to-treat-coronary-arterial-occlusion-incurred-during-orthotopic-heart-transplantation
#3
Keshava Rajagopal, Indranee Rajapreyar, Biswajit Kar, Pranav Loyalka, Igor D Gregoric
We report a case of left circumflex coronary artery occlusion sustained during orthotopic heart transplantation. Emergent coronary artery bypass grafting was performed, with recovery of cardiac function. The etiology and management of this complication are reviewed.
June 19, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28630248/chest-x-ray-of-a-patient-with-history-of-pleural-effusion
#4
Ewa Konik, John Schirger
The presented chest X-ray depicts the thoracic duct anatomy of a 50-year-old man who underwent heart transplantation. His postoperative course was complicated by Candida mediastinitis, treated with débridements and closure of the anterior chest wound with myocutaneous flaps. Postoperatively, he had persistent output from a right-sided chest tube. The fluid appeared milky and its triglycerides level was elevated at 254 mg/dL. The drainage persisted despite a low fat diet. The interventional radiologist identified a leak in the upper thoracic duct...
June 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28629552/comparative-analysis-of-four-scores-to-stratify-patients-with-heart-failure-and-reduced-ejection-fraction
#5
Pedro Freitas, Carlos Aguiar, António Ferreira, António Tralhão, António Ventosa, Miguel Mendes
There are several prognostic risk scores available for patients with heart failure with reduced ejection fraction (HFrEF) that can aid in the decision of listing candidates for heart transplant (HTx). A direct comparison between these scores has not been performed. Therefore, our objective was to evaluate the calibration and discriminative power of 4 contemporary HF scores. A retrospective analysis of 259 patients with HFrEF who underwent cardiopulmonary exercise test was conducted. The Heart Failure Survival Score (HFSS), Seattle Heart Failure Model (SHFM), Meta-analysis Global Group in Chronic Heart Failure (MAGGIC), and Metabolic Exercise Cardiac Kidney Index (MECKI) were compared...
May 11, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28627637/lentiviral-vector-mediated-co-overexpression-of-vegf-and-bcl-2-improves-mesenchymal-stem-cell-survival-and-enhances-paracrine-effects-in%C3%A2-vitro
#6
Xiaobin Ni, Caiwen Ou, Jingbin Guo, Bei Liu, Jianwu Zhang, Zhiye Wu, Hekai Li, Minsheng Chen
Mesenchymal stem cell (MSC) transplantation has emerged as a promising therapy for ischemic heart disease; however, the low survival rate of transplanted cells limits their therapeutic efficacy. The aim of this study was to investigate whether the dual genetic modification of vascular endothelial growth factor (VEGF) and B‑cell lymphoma‑2 (Bcl‑2) confers a higher expression level of the target genes, better survival and a stronger paracrine effect in MSCs in an adverse environment than the modification of the individual genes...
June 12, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28627425/a-multicenter-retrospective-analysis-stressing-importance-of-long-term-follow-up-after-hematopoietic-cell-transplantation-for-%C3%AE-thalassemia
#7
S Chaudhury, M Ayas, C Rosen, M Ma, M Viqaruddin, S Parikh, S Kharbanda, K Y Chiang, A Haight, M Bhatia, Gmt Guilcher, A Thompson, S Shenoy
Allogeneic hematopoietic cell transplantation (HCT) is curative in patients with β-thalassemia major. However, the majority of reports on HCT outcomes lack long-term follow-up data with the exception of single center reports. An international multicenter retrospective data collection and analysis was conducted in 176 β-Thalassemia patients who were 1 year or beyond after first HCT to evaluate follow up methods and outcomes at 7 centers- Median age at HCT was 5.5 years (range, 0.6- 18.5) and median follow-up was 7 years (range, 1-20)...
June 13, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28627403/accepting-hearts-from-hepatitis-c-positive-donor-can-we-expand-the-donor-pool
#8
Jonathan Grinstein, Laura M Lourenco, Helen S Te, John F Renz, Valluvan Jeevanandam, Nir Uriel
BACKGROUND: Until recently, transplantation from hepatitis C positive donors was relatively contraindicated as eradication of active hepatitis C previously required an interferon-based regimen which has been associated with rejection in solid organ transplantation. New interferon-free treatment regimens for hepatitis C have fewer adverse events and higher cure rates than interferon-based regimens. Interferon-free regimens have been shown to be safe in the liver transplantation literature but little is known about the safety and efficacy of treatment in heart transplantation...
June 13, 2017: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/28627311/landmark-cure-rate-models-with-time-dependent-covariates
#9
Haolun Shi, Guosheng Yin
We propose a class of landmark cure rate models by incorporating time-dependent covariates. The landmark approach enables us to obtain dynamic predictions of a patient's survival probabilities as new clinical information emerges during the follow-up time. The proposed method extends the landmark model for failure time data with a possible cure fraction. We specify a series of landmark time points, and for each of time point, we construct a landmark data set consisting of only those at-risk individuals at the landmark time...
January 1, 2017: Statistical Methods in Medical Research
https://www.readbyqxmd.com/read/28627046/donor-specific-antibodies-are-associated-with-micro-and-macrovascular-coronary-disease-restrictive-myocardial-damage-and-poor-outcome-in-heart-transplanted-patients
#10
Tor Skibsted Clemmensen, Pernille Koefoed-Nielsen, Lis-Ann Jensen, Steen Hvitfeldt Poulsen, Niels Ramsing Holm, Brian Bridal Løgstrup, Evald Høj Christiansen, Jouke Dijkstra, Kamilla Pernille Bjerre Valen, Hans Eiskjaer
AIMS: We examined the relationship between donor-specific HLA antibody (DSA) presence and graft function, hemodynamics, cardiac allograft vasculopathy (CAV), and major adverse cardiac events (MACE) in stable long-term heart-transplanted (HTx) patients. METHODS: Sera from 79 patients (median 7.5 years after HTx) were analyzed for DSA presence. Graft function was evaluated by echocardiography and right heart catheterization. CAV-burden was determined by coronary angiography, optical coherence tomography (OCT), and coronary flow velocity reserve (CFVR)...
June 19, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28626459/the-immunogenicity-and-immune-tolerance-of-pluripotent-stem-cell-derivatives
#11
REVIEW
Xin Liu, Wenjuan Li, Xuemei Fu, Yang Xu
Human embryonic stem cells (hESCs) can undergo unlimited self-renewal and differentiate into all cell types in human body, and therefore hold great potential for cell therapy of currently incurable diseases including neural degenerative diseases, heart failure, and macular degeneration. This potential is further underscored by the promising safety and efficacy data from the ongoing clinical trials of hESC-based therapy of macular degeneration. However, one main challenge for the clinical application of hESC-based therapy is the allogeneic immune rejection of hESC-derived cells by the recipient...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28625754/inefficacy-of-platelet-transfusion-in-a-heart-transplant-patient-under-continuous-ticagrelor
#12
Laura Filaire, Dat T Pham, Nicolas d'Ostrevy, Huyen T Tran, Lionel Camilleri, Kasra Azarnoush
No abstract text is available yet for this article.
February 20, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28624390/nkx2-5-enhances-the-efficacy-of-mesenchymal-stem-cells-transplantation-in-treatment-heart-failure-in-rats
#13
Bo Deng, Jin Xin Wang, Xing Xing Hu, Peng Duan, Lin Wang, Yang Li, Qing Lei Zhu
AIMS: The aim of this study is to determine whether Nkx2.5 transfection of transplanted bone marrow mesenchymal stem cells (MSCs) improves the efficacy of treatment of adriamycin-induced heart failure in a rat model. MAIN METHODS: Nkx2.5 was transfected in MSCs by lentiviral vector transduction. The expressions of Nkx2.5 and cardiac specific genes in MSCs and Nkx2.5 transfected mesenchymal stem cells (MSCs-Nkx2.5) were analyzed with quantitative real-time PCR and Western blot in vitro...
June 14, 2017: Life Sciences
https://www.readbyqxmd.com/read/28624338/heart-transplant-centers-with-multidisciplinary-team-show-a-higher-level-of-chronic-illness-management-findings-from-the-international-bright-study
#14
Maan Isabella Cajita, Eva Baumgartner, Lut Berben, Kris Denhaerynck, Remon Helmy, Sandra Schönfeld, Gabriele Berger, Christine Vetter, Fabienne Dobbels, Cynthia L Russell, Sabina De Geest
OBJECTIVES: The objectives of this study were to: (1) explore the proportion of HTx centers that have a multidisciplinary team and (2) assess the relationship between multidisciplinarity and the level of chronic illness management (CIM). BACKGROUND: The International Society for Heart and Lung Transplantation (ISHLT) recommends a multidisciplinary approach in heart transplant (HTx) follow-up care but little is known regarding the proportion of HTx centers that meet this recommendation and the impact on patient care...
June 14, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28624139/applying-rigor-and-reproducibility-standards-to-assay-donor-derived-cell-free-dna-as-a-non-invasive-method-for-detection-of-acute-rejection-and-graft-injury-after-heart-transplantation
#15
Sean Agbor-Enoh, Ilker Tunc, Iwijn De Vlaminck, Ulgen Fideli, Andrew Davis, Karen Cuttin, Kenneth Bhatti, Argit Marishta, Michael A Solomon, Annette Jackson, Grace Graninger, Bonnie Harper, Helen Luikart, Jennifer Wylie, Xujing Wang, Gerald Berry, Charles Marboe, Kiran Khush, Jun Zhu, Hannah Valantine
BACKGROUND: Use of new genomic techniques in clinical settings requires that such methods are rigorous and reproducible. Previous studies have shown that quantitation of donor-derived cell-free DNA (%ddcfDNA) by unbiased shotgun sequencing is a sensitive, non-invasive marker of acute rejection after heart transplantation. The primary goal of this study was to assess the reproducibility of %ddcfDNA measurements across technical replicates, manual vs automated platforms, and rejection phenotypes in distinct patient cohorts...
May 20, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28623181/allele-level-hla-matching-for-umbilical-cord-blood-transplantation-for-non-malignant-diseases-in-children-a-retrospective-analysis
#16
Mary Eapen, Tao Wang, Paul A Veys, Jaap J Boelens, Andrew St Martin, Stephen Spellman, Carmem Sales Bonfim, Colleen Brady, Andrew J Cant, Jean-Hugues Dalle, Stella M Davies, John Freeman, Katherine C Hsu, Katharina Fleischhauer, Chantal Kenzey, Joanne Kurtzberg, Gerard Michel, Paul J Orchard, Annalisa Paviglianiti, Vanderson Rocha, Michael R Veneris, Fernanda Volt, Robert Wynn, Stephanie J Lee, Mary M Horowitz, Eliane Gluckman, Annalisa Ruggeri
BACKGROUND: The standard for selecting unrelated umbilical cord blood units for transplantation for non-malignant diseases relies on antigen-level (lower resolution) HLA typing for HLA-A and HLA-B, and allele-level for HLA-DRB1. We aimed to study the effects of allele-level matching at a higher resolution-HLA-A, HLA-B, HLA-C, and HLA-DRB1, which is the standard used for adult unrelated volunteer donor transplantation for non-malignant diseases-for umbilical cord blood transplantation...
June 13, 2017: Lancet Haematology
https://www.readbyqxmd.com/read/28622179/paucicellular-fibrointimal-proliferation-characterizes-pediatric-pulmonary-vein-stenosis-clinicopathologic-analysis-of-213-samples-from-97-patients
#17
Alexandra E Kovach, Philip M Magcalas, Christina Ireland, Kerry McEnany, Andre M Oliveira, Mark W Kieran, Christopher W Baird, Kathy Jenkins, Sara O Vargas
Pulmonary vein stenosis (PVS) is a luminal narrowing of extrapulmonary pulmonary veins. In pediatric patients, it arises following repair of congenital heart disease, particularly anomalous pulmonary venous return; in lung disease, especially prematurity; and rarely in isolation. The etiology is unknown and the course often fatal without lung transplantation. We hypothesized that systematic clinicopathologic review of pediatric PVS could provide further pathogenic insight. We included patients who underwent first resection of pulmonary venous tissue for symptomatic PVS at our pediatric referral center from 1995 to 2014...
June 15, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28619384/risk-stratification-to-determine-the-impact-of-induction-therapy-on-survival-rejection-and-adverse-events-after-pediatric-heart-transplant-a-multi-institutional-study
#18
Chesney Castleberry, Elizabeth Pruitt, Rebecca Ameduri, Kenneth Schowengerdt, Erik Edens, Nancy Hagin, James K Kirklin, David Naftel, Simon Urschel
BACKGROUND: Induction therapy is increasingly being used in pediatric heart transplantation. General versus risk-adapted use remains controversial. We aimed to determine the impact of induction therapy on outcomes after stratifying patients by diagnosis and risk. METHODS: The Pediatric Heart Transplant Study (PHTS) database was used to identify patients (age ≤18 years) who underwent transplantation between January 1, 2001 and December 31, 2014. Patients were excluded if they survived <48 hours or received multiple induction agents...
May 11, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28619383/cardiac-rehabilitation-and-readmissions-after-heart-transplantation
#19
Justin M Bachmann, Ashish S Shah, Meredith S Duncan, Robert A Greevy, Amy J Graves, Shenghua Ni, Henry H Ooi, Thomas J Wang, Randal J Thomas, Mary A Whooley, Matthew S Freiberg
BACKGROUND: Exercise-based cardiac rehabilitation (CR) is under-utilized. CR is indicated after heart transplantation, but there are no data regarding CR participation in transplant recipients. We characterized current CR utilization among heart transplant recipients in the United States and the association of CR with 1-year readmissions using the 2013-2014 Medicare files. METHODS: The study population included Medicare beneficiaries enrolled due to disability (patients on the transplant list are eligible for disability benefits under Medicare regulations) or age ≥65 years...
May 23, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28619123/chd-and-respiratory-syncytial-virus-global-expert-exchange-recommendations
#20
Robert M R Tulloh, Constancio Medrano-Lopez, Paul A Checchia, Claudia Stapper, Naokata Sumitomo, Matthias Gorenflo, Eun Jung Bae, Antonio Juanico, Juan M Gil-Jaurena, Mei-Hwan Wu, Talal Farha, Ali Dodge-Khatami, Rocky Tsang, Gerard Notario, Colleen Wegzyn
BACKGROUND: Palivizumab is the standard immunoprophylaxis against serious disease due to respiratory syncytial virus infection. Current evidence-based prophylaxis guidelines may not address certain children with CHD within specific high-risk groups or clinical/management settings. METHODS: An international steering committee of clinicians with expertise in paediatric heart disease identified key questions concerning palivizumab administration; in collaboration with an additional international expert faculty, evidence-based recommendations were formulated using a quasi-Delphi consensus methodology...
June 16, 2017: Cardiology in the Young
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