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https://www.readbyqxmd.com/read/28735385/preparation-of-decellularized-liver-scaffolds-and-recellularized-liver-grafts
#1
Yibin Chen, Sharon Geerts, Maria Jaramillo, Basak E Uygun
Severe liver disease is the 12th leading cause of death in the USA, with organ transplantation often being the only viable option for treatment. However, due to the shortage of viable donor livers, it is estimated that over 1200 patients died in 2015 while waiting for liver transplantation. This highlights the need for alternative sources of viable organs. In this study, we describe a method that provides the groundwork for the development of functional liver grafts. The approach described here is for removal of cells from intact livers and subsequently repopulating them with functional liver cells...
July 23, 2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28733752/generic-immunosuppressants
#2
Mara Medeiros, Julia Lumini, Noah Stern, Gilberto Castañeda-Hernández, Guido Filler
Immunosuppressive drugs for solid organ transplantation are critical dose drugs with a narrow therapeutic index. Many of the most commonly used innovator drugs are off patent and have been replicated by generic counterparts, often at substantial cost-savings to the patient. However, serious adverse events caused by the transition from innovator to generic medications, specifically in pediatric solid organ transplant recipients, have questioned these autosubstitutions. The purpose of this review is to summarize the criteria set forth by the regulatory bodies, and to examine how major immunosuppressive drugs conform to these recommendations...
July 21, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28733264/the-impact-of-toxicities-on-first-year-outcomes-after-ex-vivo-cd34-selected-allogeneic-hematopoietic-cell-transplantation-in-adults-with-hematologic-malignancies
#3
Satyajit Kosuri, Diego Adrianzen Herrera, Michael Scordo, Gunjan L Shah, Christina Cho, Sean M Devlin, Molly A Maloy, Jimmy Nieves, Taylor Borrill, Dean C Carlow, Scott T Avecilla, Richard C Meagher, Richard J O'Reilly, Esperanza B Papadopoulos, Ann A Jakubowski, Guenther Koehne, Boglarka Gyurkocza, Hugo Castro-Malaspina, Brian C Shaffer, Roni Tamari, Sergio A Giralt, Miguel-Angel Perales
Factors that impact first year morbidity and mortality in adults undergoing myeloablative allogeneic hematopoietic cell transplantation with ex-vivo CD34+ selection have not been previously reported. We assessed all toxicities ≥ grade 3 from the start of conditioning to date of death, relapse, or last contact in 200 patients during the first year post-transplantation, identifying 1885 individual toxicities among 17 organ-based toxicity groups. The most prevalent toxicities in the 1(st) year were of infectious, metabolic, hematologic, oral/GI, hepatic, cardiac and pulmonary etiologies...
July 18, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28733263/consolidation-therapy-for-newly-diagnosed-pediatric-high-risk-neuroblastoma-patients-using-busulfan-melphalan-autologous-hematopoietic-cell-transplant-anti-gd2-antibody-gm-csf-il-2-and-haploidentical-nk-cells
#4
Aimee C Talleur, Brandon M Triplett, Sara Federico, Ewelina Mamcarz, William Janssen, Jianrong Wu, David Shook, Wing Leung, Wayne L Furman
The treatment of pediatric high-risk neuroblastoma is intensive and multimodal. Despite the introduction of immunotherapy for minimal residual disease, survival rates remain suboptimal and new therapies are needed. As part of a phase 2 trial, we are using a consolidation therapy regimen which combines a busulfan/melphalan conditioning schema, autologous hematopoietic cell transplant (AHCT), and experimental immunotherapy with hu14.18K322A (a humanized anti-GD2 monoclonal antibody), GM-CSF, and IL-2, with or without the adoptive transfer of haploidentical natural killer cells (NKs)...
July 18, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28733221/incidence-predictors-and-outcomes-of-acute-on-chronic-liver-failure-in-outpatients-with-cirrhosis
#5
Salvatore Piano, Marta Tonon, Elia Vettore, Marialuisa Stanco, Chiara Pilutti, Antonietta Romano, Sara Mareso, Carmine Gambino, Alessandra Brocca, Antonietta Sticca, Silvano Fasolato, Paolo Angeli
BACKGROUND AND AIMS: Acute-on-chronic liver failure (ACLF) is the most life-threatening complication of cirrhosis. Prevalence and outcomes of ACLF have been recently described in hospitalized patients with cirrhosis. However, no data is currently available on the prevalence and the risk factors of ACLF in outpatients with cirrhosis. The aim of this study was to evaluate incidence, predictors and outcomes of ACLF in a large cohort of outpatients with cirrhosis. METHODS: 466 patients with cirrhosis consecutively evaluated in a tertiary hospital outpatient clinic were included and followed up until death and/or liver transplantation for a mean of 45±44 months...
July 18, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28731920/eye-movement-disorders-following-allogeneic-bone-marrow-transplantation-on-fk506-tacrolimus-and-ganciclovir
#6
Barbaros S Karagun, Tugana Akbas, Taner Arpaci, Bulent Antmen
FK506 (tacrolimus) is an immunosuppressive drug and more potent than cyclosporine. FK506 is widely used for immunosuppression in the prevention and treatment of graft-versus-host disease after allogeneic bone marrow transplantation and solid organ transplantation. Neurotoxicity is a recognized complication of FK506 therapy, but ptosis and weakness of eye abduction unilaterally has not been reported in association with FK506 administration to date. We discuss a 13-year-old male patient who developed ptosis and weakness of eye abduction unilaterally 90 days after transplantation with bone marrow from an unrelated donor, for acute lymphoblastic leukemia in this case report...
July 20, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28731906/c1-inhibitor-treatment-decreases-renal-injury-in-an-established-brain-dead-rat-model
#7
Felix Poppelaars, Neeltina M Jager, Juha Kotimaa, Henri G D Leuvenink, Mohamed R Daha, Cees van Kooten, Marc A Seelen, Jeffrey Damman
BACKGROUND: Kidneys derived from brain-dead (BD) donors have lower graft survival rates compared to kidneys from living donors. Complement activation plays an important role in brain death. The aim of our study was therefore to investigate the effect of C1-inhibitor (C1-INH) on BD-induced renal injury. METHODS: Brain death was induced in rats by inflating a subdurally placed balloon catheter. Thirty minutes after BD, rats were treated with saline, low-dose or high-dose C1-INH...
July 21, 2017: Transplantation
https://www.readbyqxmd.com/read/28731905/validation-of-the-prognostic-kidney-donor-risk-index-kdri-scoring-system-of-deceased-donors-for-renal-transplantation-in-the-netherlands
#8
Hessel Peters-Sengers, Martin B A Heemskerk, Ronald B Geskus, Jesper Kers, Jaap J Homan van der Heide, Stefan P Berger, Frederike J Bemelman
BACKGROUND: The prognostic Kidney Donor Risk Index (KDRI)-developed and internally validated in the US-is a widely-used tool to predict transplant outcome of a deceased donor kidney. The KDRI is currently used for longevity matching between donors and recipients in the US. METHODS: We aimed to externally validate the KDRI as proposed by Rao et al, (2009) containing 10 donor factors (KDRIdonor-only) and 1 with 4 additional transplant factors (KDRIfull), with stratification on recipient age and diabetes...
July 21, 2017: Transplantation
https://www.readbyqxmd.com/read/28731484/cpr-ecls-bvad-and-successful-heart-transplantation-within-2-months-a-single-centre-case-series-in-two-young-high-urgency-listed-patients
#9
Anna K Schmidt, Diyar Saeed, Arash Mehdiani, Bozena Sowinski, Ralf Westenfeld, Payam Akhyari, Artur Lichtenberg, Udo Boeken
INTRODUCTION: In times of organ shortage, death while on the heart waiting-list still represents a major problem. As a consequence, bridging to transplant as well as the decision when to escalate therapy play a very important role. METHODS AND RESULTS: We report on two young patients with dilated cardiomyopathy and acute decompensation who were successfully bridged to heart transplantation with both left and temporary right ventricular assist devices in just 2 months...
July 20, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28730633/pd-1-expression-on-cd8-t-cells-regulates-their-differentiation-within-lung-allografts-and-is-critical-for-tolerance-induction
#10
T Takahashi, H M Hsiao, S Tanaka, W Li, R Higashikubo, D Scozzi, A Bharat, J H Ritter, A S Krupnick, A E Gelman, D Kreisel
Immunological requirements for rejection and tolerance induction differ between various organs. While memory CD8(+) T cells are considered a barrier to immunosuppression-mediated acceptance of most tissues and organs, tolerance induction after lung transplantation is critically dependent on central memory CD8(+) T lymphocytes. Here we demonstrate that costimulation blockade-mediated tolerance after lung transplantation is dependent on PD-1 expression on CD8(+) T cells. In the absence of PD-1 expression, CD8(+) T cells form prolonged interactions with graft-infiltrating CD11c(+) cells, their differentiation is skewed towards an effector memory phenotype and grafts are rejected acutely...
July 20, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28730239/wnt-and-nodal-signaling-simultaneously-induces-definitive-endoderm-differentiation-of-mouse-embryonic-stem-cells
#11
Wa Zhong, Yu Lai, Tao Yu, Zhong Sheng Xia, Yu Hong Yuan, Hui Ouyang, Ti Dong Shan, Qi Kui Chen
Induced differentiation of definitive endoderm (DE) from embryonic stem cells (ESCs) has been the recent focus of studies investigating regeneration and transplantation of organs of the digestive system. Poor cell survival is the most important challenge to DE differentiation from ESCs. This study aimed to optimize culture conditions to promote the differentiation of mouse ESCs into DE, and to investigate the roles of the Wnt and Nodal signaling pathways in the DE differentiation. The mouse ESCs were treated with or without leukemia inhibitory factor, Wnt3a and Activin A alone or together, and examined the DE differentiation by the DE marker CXCR4 and the ESC marker Oct4...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28730184/associations-between-deceased-donor-urine-mcp-1-and-kidney-transplant-outcomes
#12
S G Mansour, J Puthumana, P P Reese, I E Hall, M D Doshi, F L Weng, B Schröppel, H Thiessen-Philbrook, M Bimali, C R Parikh
INTRODUCTION: Existing methods to predict recipient allograft function during deceased-donor kidney procurement are imprecise. Understanding the potential renal reparative role for monocyte chemoattractant protein-1 (MCP-1), a cytokine involved in macrophage recruitment after injury, might help predict allograft outcomes. METHODS: We conducted a sub-study of the multicenter prospective Deceased Donor Study cohort, which evaluated deceased kidney donors from five organ procurement organizations from May 2010 to December 2013...
July 2017: KI Reports
https://www.readbyqxmd.com/read/28730122/corneal-blindness-and-current-major-treatment-concern-graft-scarcity
#13
REVIEW
Kah Hie Wong, Ka Wai Kam, Li Jia Chen, Alvin L Young
According to World Health Organization, the global prevalence of blindness in 2010 was 39 million people, among which 4% were due to corneal opacities. Often, the sole resort for visual restoration of patients with damaged corneas is corneal transplantation. However, despite rapid developments of surgical techniques, instrumentations and immunosuppressive agents, corneal blindness remains a prevalent global health issue. This is largely due to the scarcity of good quality corneal grafts. In this review, the causes of corneal blindness, its major treatment options, and the major contributory factors of corneal graft scarcity with potential solutions are discussed...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28730094/organ-transplantation-scandal-influencing-corneal-donation-rate
#14
Tobias Röck, Matthias Bramkamp, Karl Ulrich Bartz-Schmidt, Daniel Röck
In the majority of countries, there is a shortage of donor corneas for corneal transplantations. This study investigated the impact of organ transplantation scandals on corneal donation rate at the University Hospital Tübingen. Each deceased patient was considered as a potential corneal donor. An ophthalmic resident handled with stable methods of procedures the corneal donor procurement from 2009 to 2015. The rates of corneal donation were examined and analyzed. Among the 5712 hospital deaths, consent for corneal donation was obtained in 711 cases...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28729907/current-status-of-pediatric-transplantation-in-japan
#15
REVIEW
Nao Nishimura, Mureo Kasahara, Kenji Ishikura, Satoshi Nakagawa
Brain-dead donor organ transplantation has been available to children in Japan since the 2010 revision of the Organ Transplant Law. Of the 50-60 brain-dead donor organ transplants performed annually in Japan, however, very few (0-4 per year) are performed in children. Again, while those receiving liver, heart, and kidney transplants are reported to fare better than their counterparts in the rest of the world, organ shortage is becoming a matter of great concern. Very few organs become available from brain-dead donors or are transplanted to adults if made available at all, with some children dying while on the brain-dead organ waiting list...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28729726/heart-regeneration-and-repair-after-myocardial-infarction-translational-opportunities-for-novel-therapeutics
#16
REVIEW
Thomas J Cahill, Robin P Choudhury, Paul R Riley
Current therapies for heart failure after myocardial infarction are limited and non-curative. Although regenerative approaches are receiving significant attention, clinical efforts that involve transplantation of presumed stem and progenitor cells have largely failed to deliver. Recent studies of endogenous heart regeneration in model organisms, such as zebrafish and neonatal mice, are yielding mechanistic insights into the roles of cardiomyocyte proliferation, resident stem cell niches, neovascularization, the immune system and the extracellular matrix...
July 21, 2017: Nature Reviews. Drug Discovery
https://www.readbyqxmd.com/read/28728116/response-of-soil-physico-chemical-properties-to-restoration-approaches-and-submergence-in-the-water-level-fluctuation-zone-of-the-danjiangkou-reservoir-china
#17
Xiao Shu, KeRong Zhang, QuanFa Zhang, WeiBo Wang
With the completion of the Danjiangkou Dam, the impoundment and drainage of dams can significantly alter shorelines, hydrological regime, and sediment and can result in the loss of soil and original riparian vegetation. Revegetation may affect soil properties and have broad important implications both for ecological services and soil recovery. In this work, we investigated the soil properties under different restoration approaches, and before and after submergence in the water level fluctuation zone (WLFZ) of the Danjiangkou Reservoir...
July 17, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28727995/physician-perceptions-about-living-organ-donation-in-patients-with-amyotrophic-lateral-sclerosis
#18
S Ansari, M B Bromberg, S B Gibson
OBJECTIVES: Patients with Amyotrophic Lateral Sclerosis (ALS) have expressed desire to become living organ donors but are unable to do so with current organ donation policies. Our objective is to assess ALS patient's interest in organ donation, and perceived concerns of this practice by ALS neurologists. PATIENTS AND METHODS: An electronic survey was administered to ALS neurologists across the United States regarding living organ donation in ALS patients prior to respiratory failure...
July 5, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28726797/multiple-myeloma
#19
REVIEW
Shaji K Kumar, Vincent Rajkumar, Robert A Kyle, Mark van Duin, Pieter Sonneveld, María-Victoria Mateos, Francesca Gay, Kenneth C Anderson
Multiple myeloma is a malignancy of terminally differentiated plasma cells, and patients typically present with bone marrow infiltration of clonal plasma cells and monoclonal protein in the serum and/or urine. The diagnosis of multiple myeloma is made when clear end-organ damage attributable to the plasma cell proliferative disorder or when findings that suggest a high likelihood of their development are present. Distinguishing symptomatic multiple myeloma that requires treatment from the precursor stages of monoclonal gammopathy of undetermined significance and smouldering multiple myeloma is important, as observation is the standard for those conditions...
July 20, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28726611/added-value-of-next-generation-sequencing-for-multilocus-sequence-typing-analysis-of-a-pneumocystis-jirovecii-pneumonia-outbreak1
#20
Elena Charpentier, Cécile Garnaud, Claire Wintenberger, Sébastien Bailly, Jean-Benjamin Murat, John Rendu, Patricia Pavese, Thibault Drouet, Caroline Augier, Paolo Malvezzi, Anne Thiébaut-Bertrand, Marie-Reine Mallaret, Olivier Epaulard, Muriel Cornet, Sylvie Larrat, Danièle Maubon
Pneumocystis jirovecii is a major threat for immunocompromised patients, and clusters of pneumocystis pneumonia (PCP) have been increasingly described in transplant units during the past decade. Exploring an outbreak transmission network requires complementary spatiotemporal and strain-typing approaches. We analyzed a PCP outbreak and demonstrated the added value of next-generation sequencing (NGS) for the multilocus sequence typing (MLST) study of P. jirovecii strains. Thirty-two PCP patients were included...
August 2017: Emerging Infectious Diseases
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