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Allograft vasculopathy

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https://www.readbyqxmd.com/read/27898462/recent-advances-in-allograft-vasculopathy
#1
Jonathan Merola, Daniel D Jane-Wit, Jordan S Pober
PURPOSE OF REVIEW: Despite considerable advances in controlling acute rejection, the longevity of cardiac and renal allografts remains significantly limited by chronic rejection in the form of allograft vasculopathy. This review discusses recently reported mechanistic insights of allograft vasculopathy pathogenesis as well as recent clinical evaluations of new therapeutic approaches. RECENT FINDINGS: Although adaptive immunity is the major driver of allograft vasculopathy, natural killer cells mediate vasculopathic changes in a transplanted mouse heart following treatment with donor-specific antibody (DSA)...
November 24, 2016: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/27893615/biomarkers-for-cardiac-allograft-vasculopathy-still-searching-after-all-these-years
#2
Evan P Kransdorf, Jon A Kobashigawa
No abstract text is available yet for this article.
November 23, 2016: Transplantation
https://www.readbyqxmd.com/read/27876281/post-transplant-surveillance-for-acute-rejection-and-allograft-vasculopathy-by-echocardiography-usefulness-of-myocardial-velocity-and-deformation-imaging
#3
Michael Dandel, Roland Hetzer
Diagnosing and monitoring acute rejection (AR) and cardiac allograft vasculopathy (CAV) is essential for graft and transplant patient survival and, consequently, a major objective for heart transplant patient surveillance. Because functionally relevant CAV can arise and progress without clinical symptoms and sub-clinical ARs can facilitate the development of CAV, standard surveillance of AR and CAV includes routine endomyocardial biopsy (EMB) and coronary angiography (CA) screenings at pre-defined time intervals...
October 7, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27866017/safety-of-optical-coherence-tomography-in-pediatric-heart-transplant-patients
#4
Sarah M Ulrich, Anja Lehner, Julia Birnbaum, Stefanie Heckel, Nikolaus A Haas, Lale Hakami, Rene Schramm, Robert Dalla Pozza, Marcus Fischer, Rainer Kozlik-Feldmann
BACKGROUND: Cardiac allograft vasculopathy (CAV) is a crucial problem after heart transplantation, in adults as well as in children. CAV is the main risk factor for a reduced long-term graft survival. The early diagnosis and treatment of CAV is essential for a successful long-term preservation of the donor heart. However, asymptomatic progression of CAV and concentric hyperplasia of the coronary arteries may complicate the early diagnosis by conventional measures. Intravascular imaging, such as intravascular ultrasound and optical coherence tomography (OCT), enables the diagnosis of early stage CAV...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27865734/vascular-endothelial-growth-factor-a-is-associated-with-the-subsequent-development-of-moderate-or-severe-cardiac-allograft-vasculopathy-in-pediatric-heart-transplant-recipients
#5
Kevin P Daly, Maria Stack, Michele F Eisenga, John F Keane, David Zurakowski, Elizabeth D Blume, David M Briscoe
BACKGROUND: Cardiac allograft vasculopathy (CAV) is the leading cause of chronic allograft loss after pediatric heart transplantation. We hypothesized that biomarkers of endothelial injury and repair would predict CAV development in pediatric heart transplant recipients. METHODS: Blood was collected from pediatric heart transplant recipients at the time of routine annual coronary angiography, and the concentrations of 13 angiogenesis-related molecules were determined...
October 3, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27865004/long-term-effects-of-high-intensity-interval-training-in-heart-transplant-recipients-a-5-year-follow-up-study-of-a-randomized-controlled-trial
#6
Marianne Yardley, Lars Gullestad, Bjørn Bendz, Elisabeth Bjørkelund, Katrine Rolid, Satish Arora, Kari Nytrøen
BACKGROUND: Previously studies have demonstrated that high-intensity interval training(HIT) is superior to moderate-continuous exercise in general and in cardiovascular diseases. Recently we also found HIT safe and efficient after heart transplantation(HTx). This study reports the 5-year long-term effects. DESIGN AND METHODS: Forty-one HTx-patients who had completed the previous 12-month randomized controlled trial, comparing HIT-intervention with usual care, were eligible...
November 12, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27862968/the-xiii-th-banff-conference-on-allograft-pathology-the-banff-2015-heart-meeting-report-improving-antibody-mediated-rejection-diagnostics-strengths-unmet-needs-and-future-directions
#7
P Bruneval, A Angelini, D Miller, L Potena, A Loupy, A Zeevi, E F Reed, D Dragun, N Reinsmoen, R N Smith, L West, S Tebutt, T Thum, M Haas, M Mengel, P Revelo, M Fedrigo, J P Duong Van Huyen, G J Berry
The 13(th) Banff Conference on Allograft Pathology was held in Vancouver, British Columbia, Canada from October 5-10, 2015. The cardiac session was devoted to current diagnostic issues in heart transplantation with a focus on antibody-mediated rejection (AMR) and small vessel arteriopathy. Specific topics included the strengths and limitations of the current rejection grading system, the central role of microvascular injury in AMR and approaches to semi-quantitative assessment of histopathologic and immunophenotypic indicators, the role of AMR in the development of cardiac allograft vasculopathy, the important role of serologic antibody detection in the management of transplant recipients and the potential application of new molecular approaches to the elucidation of the pathophysiology of AMR and potential for improving the current diagnostic system...
November 12, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27862865/long-term-clinical-and-angiographic-outcomes-of-percutanenous-coronary-intervention-with-everolimus-eluting-stents-for-the-treatment-of-cardiac-allograft-vasculopathy
#8
Richard Cheng, Christopher Vanichsarn, Jignesh K Patel, Jesse Currier, David H Chang, Michelle M Kittleson, Raj Makkar, Jon A Kobashigawa, Babak Azarbal
BACKGROUND: Percutaneous coronary intervention (PCI) with bare-metal and first-generation drug-eluting stents (DES) for cardiac allograft vasculopathy (CAV) is associated with unexpectedly high restenosis rates and target lesion revascularization (TLR). Long-term outcomes of stenting for CAV using second-generation everolimus-eluting stents (EES) are not established. OBJECTIVE: To evaluate clinical and angiographic outcomes of CAV stenting with EES. METHODS: Patients who underwent PCI with EES for CAV were studied...
November 10, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27834759/current-expectations-for-cardiac-transplantation-in-patients-with-congenital-heart-disease
#9
James K Kirklin, Waldemar F Carlo, F Bennett Pearce
Congenital heart disease accounts for 40% of pediatric heart transplants and presents unique challenges to the transplant team. Suitability for transplantation is defined in part by degree of sensitization, pulmonary vascular resistance, and hepatic reserves. The incremental transplant risk for patients with congenital heart disease occurs within the first 3 months, after which survival is equivalent to transplantation for cardiomyopathy. Single ventricle with prior palliation, and especially the failing Fontan, carry the highest risk for transplantation and are least amenable to bridging with mechanical circulatory support...
November 2016: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/27814596/diagnosis-of-cardiac-allograft-vasculopathy-challenges-and-opportunities
#10
Bhavesh Patel, Aashish Ahuja, Ghassan S Kassab, Carlos A Labarrere
Cardiac allograft vasculopathy (CAV) is one of the most common long-term complications in patients following heart transplantation. Because of its irreversible nature, early detection is essential to impact progression. Thus, imaging techniques play a crucial role in the diagnosis and subsequent treatment. Major advancements in imaging and analysis are required to overcome the limitations of current techniques. Coronary angiography which is the standard method, presents low sensitivity in detection, especially at an early stage...
January 1, 2017: Frontiers in Bioscience (Elite Edition)
https://www.readbyqxmd.com/read/27814594/cardiac-allograft-vasculopathy-microvascular-arteriolar-capillaries-capioles-and-survival
#11
Carlos A Labarrere, Beate R Jaeger, Ghassan S Kassab
Cardiac allograft vasculopathy (CAV) is a serious complication of heart transplantation in adults and children. Risk factors include human leukocyte antigen mismatches, number and duration of rejection episodes, type of immunosuppression, antibody-mediated rejection, hypertension, hyperlipidemia, obesity, smoking, diabetes, cytomegalovirus infection, mode of donor brain death, donor age and ischemia/reperfusion injury. Endothelial injury and dysfunction in CAV are characterized by changes in adhesion molecules and up-regulation of major histocompatibility class II antigens followed by endothelial activation of complement C4d...
January 1, 2017: Frontiers in Bioscience (Elite Edition)
https://www.readbyqxmd.com/read/27795988/sex-related-differences-in-the-risk-of-antibody-mediated-rejection-and-subsequent-allograft-vasculopathy-post-heart-transplantation-a-single-center-experience
#12
Avishay Grupper, Emilija M Nestorovic, Richard C Daly, Natasa M Milic, Lyle D Joyce, John M Stulak, David L Joyce, Brooks S Edwards, Naveen L Pereira, Sudhir S Kushwaha
BACKGROUND: Pregnancies may result in antibodies against HLA, a risk factor for antibody-mediated rejection (AMR) and subsequent cardiac allograft vasculopathy (CAV) after heart transplantation (HTx). The aim of this study was to evaluate sex differences in the incidence of AMR events and subsequent risk of CAV among HTx recipients. METHODS: The study comprised 160 patients (51 [32%] women) who underwent HTx in 2008 to 2014. The cumulative effect of AMR events was calculated by AMR score (sum of myocardial biopsy grading divided by number of biopsies taken during 3 years post-HTx)...
October 2016: Transplantation Direct
https://www.readbyqxmd.com/read/27712978/mmp-14-promotes-vsmc-migration-via-up-regulating-cd44-expression-in-cardiac-allograft-vasculopathy
#13
Daliang Yan, Xiaojuan Liu, Lu Hua, Kunpeng Wu, Xilin Sha, Jianhua Zhao, Chen Yang, Chao Zhang, Jiahai Shi, Xiang Wu
Cardiac allograft vasculopathy (CAV) was the leading cause of late death in heart transplantation recipients. Matrix metalloproteinase-14 (MMP-14), as a member of the MMPs family, has been reported to play a vital role in coronary vascular lesions of allotransplanted hearts. However, concrete mechanism is still unclear. Herein, we showed that the expression of MMP-14 was different between isografts and allografts. Interestingly, we found MMP-14 could interact with CD44 in allografts. Cluster of differentiation 44 (CD44), as a cell adhesion receptor and is involved in cell migration, caused our interest in MMP-14/CD44 complex in allografts...
September 25, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/27692538/cholesterol-efflux-capacity-a-weak-player-in-the-complex-plot-of-cardiac-allograft-vasculopathy
#14
Marco Masetti, Luciano Potena
No abstract text is available yet for this article.
August 30, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27686602/association-of-recipient-age-and-causes-of-heart-transplant-mortality-implications-for-personalization-of-post-transplant-management-an-analysis-of-the-international-society-for-heart-and-lung-transplantation-registry
#15
Omar Wever-Pinzon, Leah B Edwards, David O Taylor, Abdallah G Kfoury, Stavros G Drakos, Craig H Selzman, James C Fang, Lars H Lund, Josef Stehlik
BACKGROUND: Survival beyond 1 year after heart transplantation has remained without significant improvement for the last 2 decades. A more individualized approach to post-transplant care could result in a reduction of long-term mortality. Although recipient age has been associated with an increased incidence of certain post-transplant morbidities, its effect on cause-specific mortality has not been established. METHODS: We analyzed overall and cause-specific mortality of heart transplant recipients registered in the International Society for Heart and Lung Transplantation Registry between 1995 and 2011...
August 20, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27646064/intermediate-outcomes-with-ex-vivo-allograft-perfusion-for-heart-transplantation
#16
Joshua L Chan, Jon A Kobashigawa, Heidi J Reich, Danny Ramzy, Maria M Thottam, Zhe Yu, Tamar L Aintablian, Frank Liou, Jignesh K Patel, Michelle M Kittleson, Lawrence S Czer, Alfredo Trento, Fardad Esmailian
BACKGROUND: The Organ Care System, an ex-vivo heart perfusion platform, represents an alternative to the current standard of cold organ storage that sustains the donor heart in a near-physiologic state. It is unknown whether using the Organ Care System influences 2-year outcomes after heart transplantation. We reviewed our institutional experience to compare 2-year outcomes for patients randomized to the Organ Care System or standard cold storage. METHODS: Between 2011 and 2013, heart transplant candidates from a single tertiary-care medical center enrolled within the PROCEED II trial were randomized to either standard cold storage or the Organ Care System...
August 20, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27625368/prognostic-impact-of-late-gadolinium-enhancement-in-the-risk-stratification-of-heart-transplant-patients
#17
Patrizia Pedrotti, Claudia Vittori, Rita Facchetti, Stefano Pedretti, Santo Dellegrottaglie, Angela Milazzo, Maria Frigerio, Manlio Cipriani, Cristina Giannattasio, Alberto Roghi, Ornella Rimoldi
AIMS: The aim of the present study was to assess the association of the presence and amount of late gadolinium enhancement (LGE) at cardiac magnetic resonance (CMR) with cardiovascular adverse events in patients with orthotopic heart transplantation (HTx). METHODS AND RESULTS: We enrolled 48 patients (mean age, 54.7 ± 14.6 years; 37 men) at various stages after HTx. All patients underwent standard CMR at 1.5 T, to characterize both cardiac anatomy and LGE. Late gadolinium enhancement was detected in 26 patients (54%)...
September 13, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/27621856/erythroblast-transformation-specific-2-correlates-with-vascular-smooth-muscle-cell-apoptosis-in-rat-heterotopic-heart-transplantation-model
#18
Xiaojuan Liu, Daliang Yan, Yangcheng Li, Xilin Sha, Kunpeng Wu, Jianhua Zhao, Chen Yang, Chao Zhang, Jiahai Shi, Xiang Wu
BACKGROUND: Cardiac allograft vasculopathy (CAV) decreases the long-term survival of heart transplantation recipients. Vascular smooth muscle cell (VSMC) apoptosis is an important pathological feature of CAV. Erythroblast transformation-specific 2 (Ets-2), as a transcription factor, participates in cell apoptosis and plays an important role in organ transplantation. METHODS: Hearts from Wistar-Furth (WF:RT1u) rats were heterotopically transplanted into Lewis (Lew:RT1(l)) rats without immunosuppression...
August 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/27597125/toxoplasma-gondii-serostatus-in-heart-transplant-recipients-is-it-an-independent-prognostic-factor
#19
Eduardo Barge-Caballero, Cayetana Barbeito-Caamaño, Gonzalo Barge-Caballero, David Couto-Mallón, María J Paniagua-Martín, Raquel Marzoa-Rivas, Miguel Solla-Buceta, Francisco Estévez-Cid, José M Herrera-Noreña, José J Cuenca-Castillo, José M Vázquez-Rodríguez, María G Crespo-Leiro
INTRODUCTION AND OBJECTIVES: To assess the potential association between recipient Toxoplasma gondii serostatus and outcomes after heart transplant (HT). METHODS: We conducted a retrospective single-center study of 657 HT recipients from 1991 to 2015. Survival and the incidence of adverse clinical events of T. gondii-seropositive (n = 481) vs T. gondii-seronegative (n = 176) recipients were compared by means of 2 different multivariable Cox regression models...
August 30, 2016: Revista Española de Cardiología
https://www.readbyqxmd.com/read/27586194/cardiac-allograft-vasculopathy-in-dutch-heart-transplant-recipients
#20
G Galli, K Caliskan, A H M M Balk, R van Domburg, O Birim, J Salerno-Uriarte, O C Manintveld, A A Constantinescu
BACKGROUND: Cardiac allograft vasculopathy (CAV) is a multifactorial disease and a major cause of graft failure after heart transplantation. However, the impact of CAV may vary according to the definition and the regional differences in transplantation settings. OBJECTIVES: We sought to assess CAV prevalence, predictors and prognosis in Dutch heart transplant recipients based on coronary angiography, following the 2010 standard nomenclature of the International Society for Heart and Lung Transplantation...
September 1, 2016: Netherlands Heart Journal
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