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Renal failure and heart transplant

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https://www.readbyqxmd.com/read/28429125/low-plasma-homoarginine-concentration-is-associated-with-high-rates-of-all-cause-mortality-in-renal-transplant-recipients
#1
Arslan Arinc Kayacelebi, Isidor Minović, Erik Hanff, Anne-Roos S Frenay, Martin H de Borst, Martin Feelisch, Harry van Goor, Stephan J L Bakker, Dimitrios Tsikas
In renal transplant recipients (RTR), we recently found that low urinary excretion of homoarginine (hArg) is associated with mortality and graft failure. However, it is not known whether such prospective associations also hold true for plasma concentrations of hArg. In the present study, we therefore determined plasma concentrations of hArg in the same cohort, i.e. in 687 RTR (functioning graft ≥1 year), and in 140 healthy donors, before and after kidney donation. Plasma hArg concentrations were significantly lower in RTR compared to healthy controls [1...
April 20, 2017: Amino Acids
https://www.readbyqxmd.com/read/28361119/evaluation-of-carotid-ultrasonography-screening-among-kidney-transplant-candidates-a-single-center-retrospective-study
#2
Chad W Rossitter, Ronald B Vigo, Ahmed Osama Gaber, Joshua T Swan, Wadi N Suki
BACKGROUND: Kidney transplant candidates undergo rigorous testing prior to clearance for transplantation. Because kidney transplant candidates may be at increased risk for carotid artery stenosis because of arteriosclerosis and atherosclerosis secondary to hypertension, vascular calcification, and diabetes, carotid ultrasound is often performed with the intent of preventing a cerebrovascular accident in the perioperative or posttransplant period. To our knowledge, there has not been a study investigating the utility of screening carotid ultrasonography in pretransplant candidates...
March 2017: Transplantation Direct
https://www.readbyqxmd.com/read/28331061/an-intracellular-matrix-metalloproteinase-2-isoform-induces-tubular-regulated-necrosis-implications-for-acute-kidney-injury
#3
Carla S Ceron, Celine Baligand, Sunil K Joshi, Shaynah Wanga, Patrick M Cowley, Joy P Walker, Sang Heon Song, Rajeev Mahimkar, Anthony J Baker, Robert L Raffai, Zhen J Wang, David H Lovett
Acute kidney injury (AKI) causes severe morbidity, mortality, and chronic kidney disease (CKD). Mortality is particularly marked in the elderly and with pre-existing CKD. Oxidative stress is a common theme in models of AKI induced by ischemia/reperfusion (I/R) injury. We recently characterized an intracellular isoform of matrix metalloproteinase-2 (MMP-2) induced by oxidative stress-mediated activation of an alternate promoter in the first intron of the MMP-2 gene. This generates an N-terminal truncated MMP-2 isoform (NTT-MMP-2) that is intracellular and associated with mitochondria...
March 22, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28298957/the-intersection-of-pulmonary-hypertension-and-solid-organ-transplantation
#4
Adaani E Frost
Pulmonary hypertension (PH) is a complication and marker of disease severity in many parenchymal lung diseases. It also is a frequent complication of portal hypertension and negatively impacts survival with liver transplant. Pulmonary hypertension is frequently diagnosed in patients with end-stage renal disease who are undergoing dialysis, and it has recently been demonstrated to adversely affect posttransplant outcome in this patient population even though the mechanism of PH is substantially different from that associated with liver disease...
October 2016: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/28285802/long-term-prognosis-and-cost-effectiveness-of-left-ventricular-assist-device-as-bridge-to-transplantation-a-systematic-review
#5
Michael Seco, Dong Fang Zhao, Michael J Byrom, Michael K Wilson, Michael P Vallely, John F Fraser, Paul G Bannon
BACKGROUND: This systematic review aimed to evaluate the clinical outcomes and cost-effectiveness of left ventricular assist devices (LVADs) used as bridge to transplantation (BTT), compared to orthotopic heart transplantation (OHT) without a bridge. METHOD: Systematic searches were performed in electronic databases with available data extracted from text and digitized figures. Meta-analysis of short and long-term term post-transplantation outcomes was performed with summation of cost-effectiveness analyses...
May 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28270107/incidence-of-cardiovascular-events-and-associated-risk-factors-in-kidney-transplant-patients-a-competing-risks-survival-analysis
#6
María Teresa Seoane-Pillado, Salvador Pita-Fernández, Francisco Valdés-Cañedo, Rocio Seijo-Bestilleiro, Sonia Pértega-Díaz, Constantino Fernández-Rivera, Ángel Alonso-Hernández, Cristina González-Martín, Vanesa Balboa-Barreiro
BACKGROUND: The high prevalence of cardiovascular risk factors among the renal transplant population accounts for increased mortality. The aim of this study is to determine the incidence of cardiovascular events and factors associated with cardiovascular events in these patients. METHODS: An observational ambispective follow-up study of renal transplant recipients (n = 2029) in the health district of A Coruña (Spain) during the period 1981-2011 was completed...
March 7, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28267897/outcomes-of-pediatric-kidney-transplantation-in-recipients-of-a-previous-non-renal-solid-organ-transplant
#7
G Hamdani, B Zhang, C Liu, J Goebel, Y Zhang, E Nehus
Children who receive a non-renal solid organ transplant may develop secondary renal failure requiring kidney transplantation. We investigated outcomes of 165 pediatric kidney transplant recipients who previously received a heart, lung, or liver transplant using data from 1988 to 2012 reported to the United Network for Organ Sharing. Patient and allograft survival were compared with 330 matched primary kidney transplant (PKT) recipients. Kidney transplantation after solid organ transplant (KASOT) recipients experienced similar allograft survival: 5- and 10-year graft survival was 78% and 60% in KASOT recipients, compared to 80% and 61% in PKT recipients (p = 0...
March 7, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28261549/bioengineering-hearts-simple-yet-complex
#8
REVIEW
Doris A Taylor, Rohan B Parikh, Luiz C Sampaio
PURPOSE OF REVIEW: In this review, we focus on the multiple advancements in the field of cardiovascular regenerative medicine and the state-of-the art of building a heart. An organ is comprised of cells, but cells alone do not comprise an organ. We summarize the components needed, the hurdles, and likely translational steps defining the opportunities for discovery. RECENT FINDINGS: The therapies being developed in regenerative medicine aim not only to repair, but also to regenerate or replace ailing tissues and organs...
2017: Current Stem Cell Reports
https://www.readbyqxmd.com/read/28260475/nonmelanoma-skin-cancers-after-kidney-transplant-our-15-years-of-experience-with-mammalian-target-of-rapamycin-inhibitors
#9
Gokalp Okut, Alper Alp, Erhan Tatar, Cenk Simsek, Cem Tugmen, Adam Uslu
OBJECTIVES: We evaluated patients with nonmelanoma skin cancer after kidney transplant and the effects of immunosuppression reduction and switching to a mammalian target of rapamycin inhibitor drugs. MATERIALS AND METHODS: Kidney transplant recipients were evaluated retrospectively from patient medical records (between January 2000 and December 2014). A 30% increase in serum creatinine was accepted as indicating renal failure progression. RESULTS: Of 18 patients included (mean follow-up 98 ± 66 mo), 7 (38...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28238919/characteristics-management-and-outcomes-of-surgically-treated-arteriovenous-fistula-aneurysm-in-patients-on-regular-hemodialysis
#10
Hassan Al-Thani, Ayman El-Menyar, Noora Al-Thani, Mohammad Asim, Ahmed Hussein, Ahmed Sadek, Ahmed Sharaf, Amr Fares
BACKGROUND: To investigate the clinical characteristics, surgical interventions and outcomes of arteriovenous fistula (AVF) aneurysms, we retrospectively analyzed patients on regular hemodialysis (HD). METHODS: We conducted a cohort study of all patients with HD access who presented with AVF aneurysms and underwent operative procedures over a 11-year period. Patients' demographics, comorbidities, vascular access characteristics, management of aneurysms, complications and outcomes were analyzed...
February 23, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28219580/use-of-anti-thymocyte-globulin-for-induction-therapy-in-cardiac-transplantation-a-review
#11
V Ruan, L S C Czer, M Awad, M Kittleson, J Patel, F Arabia, F Esmailian, D Ramzy, J Chung, M De Robertis, A Trento, J A Kobashigawa
The most common causes of death after heart transplantation (HTx) include acute rejection and multi-organ failure in the early period and malignancy and cardiac allograft vasculopathy (CAV) in the late period. Polyclonal antibody preparations such as rabbit anti-thymocyte globulin (ATG) may reduce early acute rejection and the later occurrence of CAV after HTx. ATG therapy depletes T cells, modulates adhesion and cell-signaling molecules, interferes with dendritic cell function, and induces B-cell apoptosis and regulatory and natural killer T-cell expansion...
March 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28214296/abnormally-high-and-heterogeneous-bone-matrix-mineralization-after-childhood-solid-organ-transplantation-a-complex-pathology-of-low-bone-turnover-and-local-defects-in-mineralization
#12
Nadja Fratzl-Zelman, Helena Valta, Renata C Pereira, Barbara M Misof, Paul Roschger, Hannu Jalanko, Kathrine Wesseling-Perry, Klaus Klaushofer, Outi Mäkitie
Chronic renal, liver and heart failure in children associates with multiple skeletal complications. Increased fracture incidence often persists after transplantation and could be related to alterations in bone material properties. In the present cohort study we evaluated bone mineralization density distribution (BMDD) by quantitative backscattered electron imaging (qBEI) in 23 pediatric solid organ allograft recipients with suspected osteoporosis. We measured BMDD in the entire cross-sectional area of transiliac bone biopsies obtained from kidney (n = 9), liver (n = 9) and heart (n = 5) transplant recipients (aged 7...
February 18, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28176387/bridge-with-a-left-ventricular-assist-device-to-a-simultaneous-heart-and-kidney-transplant-review-of-the-united-network-for-organ-sharing-database
#13
Ann C Gaffey, Carol W Chen, Jennifer Chung, Edward Wilson Grandin, Paige M Porrett, Michael A Acker, Pavan Atluri
BACKGROUND: Left ventricular assist device (LVAD) implantation as a bridge to cardiac transplantation (BTT) is an effective treatment for end-stage heart failure patients. Currently, there is an increasing number of patients with a LVAD who need a heart and kidney transplant (HKT). Little is known of the prognostic outcomes in these patients. This study was undertaken to determine whether an equivalent outcome would be present in HKTs as compared to a non-LVAD primary HKT cohort. METHODS: We reviewed the United Network for Organ Sharing database from 2004 to 2013...
February 8, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28168428/longer-than-average-length-of-stay-in-acute-heart-failure-determinants-and-outcomes
#14
H R Omar, M Guglin
BACKGROUND: Increased length of stay (LOS) during acute heart failure (HF) hospitalization is associated with readmission and mortality. METHODS: The ESCAPE trial data were utilized to identify determinants and post-discharge outcomes of patients with acute systolic HF requiring longer-than-average LOS (≥7 days). The study endpoints were 6‑month all-cause mortality, all-cause rehospitalization, and the composite endpoint of death, cardiac rehospitalization, and cardiac transplant...
February 6, 2017: Herz
https://www.readbyqxmd.com/read/28111176/procalcitonin-dynamics-after-long-term-ventricular-assist-device-implantation
#15
Jiri Kettner, Martin Holek, Janka Franekova, Antonin Jabor, Marian Pindak, Hynek Riha, Josef Kautzner, Jan Pirk
BACKGROUND: Infectious complications (IC) are one of the main causes of worsening prognosis after long-term ventricular assist device (LVAD) implantation. Procalcitonin (PCT) is widely used for diagnosis of a bacterial infection. The objective of this study was to assess PCT dynamics after LVAD surgery and their relationship to the infectious complications. METHODS: A total of 25 consecutive patients indicated for LVAD implantation as a bridge to heart transplant were included...
November 16, 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28104114/re-evaluating-cut-off-points-for-the-expansion-of-deceased-donor-criteria-for-kidney-transplantation-in-japan
#16
Y Nakagawa, M Ikeda, T Ando, M Tasaki, K Saito, K Takahashi, A Aikawa, M Kikuchi, K Akazawa, Y Tomita
BACKGROUND: A shortage of donors poses a serious problem for organ transplantation around the world. In response, the concept of the expanded criteria donor (ECD) has been defined to include donors with traditionally less favorable characteristics. That definition has now been accepted and is being applied in kidney transplantation in the United States and Europe. However, the ECD has not yet been defined for deceased donor kidney transplantation in Japan. PATIENTS AND METHODS: We analyzed data on graft survival and relevant risk factors in patients who received deceased donor kidney transplants through the East Japan Branch of the Japan Organ Transplant network (n = 1051)...
January 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28087104/improved-outcomes-from-extracorporeal-membrane-oxygenation-versus-ventricular-assist-device-temporary-support-of-primary-graft-dysfunction-in-heart-transplant
#17
Koji Takeda, Boyangzi Li, Arthur R Garan, Veli K Topkara, Jiho Han, Paolo C Colombo, Maryjane A Farr, Yoshifumi Naka, Hiroo Takayama
BACKGROUND: Primary graft dysfunction (PGD) is one of the most common causes of early death after orthotopic heart transplantation. Mechanical circulatory support devices are required for severe forms of PGD. Venoarterial extracorporeal membrane oxygenation (VA-ECMO) and temporary ventricular assist device (VAD) support have both been reported to be useful for severe PGD. METHODS: Between January 2007 and December 2015, 597 patients received a heart transplant at our center...
December 23, 2016: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28077806/low-protein-diet-for-the-prevention-of-renal-failure
#18
REVIEW
Shaw Watanabe
The prevalence of chronic kidney disease (CKD) is estimated to be 8-16% worldwide, and it is increasing. CKD is a risk factor for heart attack and stroke, and it can progress to kidney failure requiring dialysis or transplantation. Recently, diabetic nephropathy has become the most common cause of CKD. In Japan, the cumulative probability of requiring hemodialysis by the age 80 years is 1/50 in males and 1/100 in females. The number of patients under hemodialysis in Japan exceeded 320,000 in 2014, among which 38,000 were newcomers and 27,000 died...
2017: Proceedings of the Japan Academy. Series B, Physical and Biological Sciences
https://www.readbyqxmd.com/read/28057809/factors-associated-with-long-term-mortality-after-fontan-procedures-a-systematic-review
#19
REVIEW
Tarek Alsaied, Jouke P Bokma, Mark E Engel, Joey M Kuijpers, Samuel P Hanke, Liesl Zuhlke, Bin Zhang, Gruschen R Veldtman
BACKGROUND: Despite an ageing Fontan population, data on late outcomes are still scarce. Reported outcome measures and determinants vary greatly between studies making comprehensive appraisal of mortality hazard challenging. METHODS: We conducted a systematic review to evaluate causes and factors associated with late mortality in patients with Fontan circulation. Late mortality was defined as mortality beyond the first postoperative year. Studies were included if they had ≥90 patients or ≥20 late mortalities and/or transplants...
January 15, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28043466/increasing-complexity-of-heart-transplantation-in-patients-with-congenital-heart-disease
#20
William Y Shi, Pankaj Saxena, Matthew S Yong, Silvana F Marasco, David C McGiffin, Anne Shipp, Robert G Weintraub, Yves d'Udekem, Christian P Brizard, Igor E Konstantinov
Owing to improved surgical results, there is a growing population of patients with repaired congenital heart disease (CHD) requiring heart transplantation. The objective of the study was to review our experience in these patients. A retrospective review of the outcomes of heart transplantation in patients with CHD (n = 77) between 1988 and 2014 was performed. Outcomes of early (1988-1999) and late (2000-2014) eras were compared. In results, the mean age was 18 ± 14 years (range: 16 days-58 years). Seventy (91%) patients underwent a mean of 2...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
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