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https://www.readbyqxmd.com/read/28548887/effects-of-bone-morphogenetic-protein-2-on-vertical-bone-augmentation-in-a-canine-model
#1
Yung-Ting Hsu, Khalid Al-Hezaimi, Pablo Galindo-Moreno, Francisco O'Valle, Abdulaziz Al-Rasheed, Hom-Lay Wang
BACKGROUND: Vertical bone augmentation (VBA) remains unpredictable and challenging for most clinicians. This study was aimed to compare hard tissue outcomes of VBA, with and without rhBMP-2, under space-making titanium mesh in a canine model. METHODS: Eleven male beagle dogs were used in the study. Experimental ridge defects were created to form atrophic ridges. VBA was performed via guide bone regeneration (GBR) using titanium mesh and allografts. In experimental hemimandibles, rhBMP-2/ACS was well mixed with allografts prior to procedures, whereas a control buffer was applied within controls...
May 26, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28548586/arthroscopic-treatment-of-osteochondral-lesions-of-the-talus-with-allograft-cartilage-matrix
#2
Jamal Ahmad, Mitchell Maltenfort
BACKGROUND: This prospective study evaluated the intermediate-term outcomes of operatively treating primary osteochondral lesions of the talus (OLT) of 1.5 cm(2) or smaller with arthroscopic excision, microfracture, and allograft cartilage extracellular matrix (ECM). METHODS: Between 2012 and 2015, 30 consecutive patients received allograft cartilage ECM at their microfractured OLT of 1.5 cm(2) or smaller after failing nonoperative treatment. Preoperative and postoperative function and pain were graded using the Foot and Ankle Ability Measure (FAAM) and a visual analog scale (VAS), respectively...
May 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28547678/immunosuppression-drug-therapy-in-lung-transplantation-for-cystic-fibrosis
#3
REVIEW
Pamela Burcham, Lisa Sarzynski, Sabrina Khalfoun, Kimberly J Novak, Julie C Miller, Dmitry Tumin, Don Hayes
Cystic fibrosis (CF) is a common indication for lung transplantation (LTx) in children and adults with severe and irreversible lung disease. In the setting of LTx in the CF population, immunosuppressive medications are used to prevent allograft rejection despite the majority of these patients being chronically infected with numerous, and often antibiotic-resistant, pathogens. There is limited evidence for the optimal post-LTx immunosuppression regimen in patients with CF, particularly in children. This article provides a review of immunosuppression regimens in the pediatric and adult CF post-LTx population, investigating drug dosing and monitoring, and medication combinations...
May 25, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/28546901/macrophages-as-effectors-of-acute-and-chronic-allograft-injury
#4
Yianzhu Liu, Malgorzata Kloc, Xian C Li
Organ transplants give a second chance of life to patients with end-stage organ failure. However, the immuno-logical barriers prove to be very challenging to overcome and graft rejection remains a major hurdle to long-term transplant survival. For decades, adaptive immunity has been the focus of studies, primarily based on the belief that T cells are necessary and sufficient for rejection. With better-developed immunosuppressive drugs and protocols that effectively control adaptive cells, innate immune cells have emerged as key effector cells in triggering graft injury and have therefore attracted much recent attention...
December 2016: Current Transplantation Reports
https://www.readbyqxmd.com/read/28546378/pediatric-lung-transplantation
#5
Stuart C Sweet
Pediatric lung transplant is a viable option for treatment of end-stage lung disease in children, with > 100 pediatric lung transplants reported to the Registry of the International Society of Heart and Lung Transplantation each year. Long-term success is limited by availability of donor organs, debilitation as a result of chronic disease, impaired mucus clearance resulting from both surgical and pharmacologic interventions, increased risk for infection resulting from immunosuppression, and most importantly late complications, such as chronic lung allograft dysfunction...
June 2017: Respiratory Care
https://www.readbyqxmd.com/read/28545984/efficacy-and-safety-of-de-novo-and-early-use-of-extended-release-tacrolimus-in-heart-transplantation
#6
Francisco González-Vílchez, José Luis Lambert, Diego Rangel, Luis Almenar, José Luis de la Fuente, Jesús Palomo, Beatriz Díaz Molina, Ernesto Lage, Ignacio Sánchez Lázaro, José A Vázquez de Prada
INTRODUCTION AND OBJECTIVES: The extended-release formulation of tacrolimus (ERT) allows once-daily dosage, thus simplifying the immunosuppressive regimen. This study aimed to describe the safety and efficacy of the de novo and early use of ERT in heart transplantation. METHODS: This was an observational, retrospective, multicenter study comparing the safety and efficacy of the de novo use of ERT (ERT group [n=94]), standard-release tacrolimus (SRT group [n=42]) and early conversion (EC) from SRT to ERT (EC group [n=44])...
May 22, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28545478/ltb4-and-montelukast-in-transplantation-related-bronchiolitis-obliterans-in-rats
#7
Zheng-Liang Tu, Zhen-Yu Zhou, Hai-Chao Xu, Jin-Lin Cao, Peng Ye, Lu-Ming Wang, Wang Lv, Jian Hu
BACKGROUND: Lung transplantation is the only effective treatment for end-stage lung diseases. Bronchiolitis obliterans, which is known as non-infectious chronic lung allograft dysfunction (CLAD) in the new classification, is the greatest threat to long-term survival after lung transplantation. This study investigated the role of leukotriene B4 (LTB4) and montelukast in transplantation-related bronchiolitis obliterans and discussed the pathophysiological significance of LTB4 in chronic rejection...
May 25, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28544435/solid-renal-masses-in-transplanted-allograft-kidneys-a-closer-look-at-the-epidemiology-and-management
#8
John J Griffith, Katherine A Amin, Nikhil Waingankar, Susan M Lerner, Veronica Delaney, Scott A Ames, Ketan Badani, Michael A Palese, Reza Mehrazin
The objective of this review is to explore the available literature on solid renal masses (SRM) in transplant allograft kidneys to better understand the epidemiology and management of these tumors. A literature review using PubMed was performed according to the PRISMA methodology. Fifty-six relevant studies were identified from 1988-2015. A total of 174 SRMs in 163 patients, were identified with a mean tumor size of 2.75 cm (0.5-9.0cm). Tumor histology was available in 164 (94.3%) tumors: clear cell renal cell carcinoma (RCC) (45...
May 19, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28544101/belatacept-combined-with-transient-calcineurin-inhibitor-therapy-prevents-rejection-and-promotes-improved-long-term-renal-allograft-function
#9
A B Adams, J Goldstein, C Garrett, R Zhang, R E Patzer, K A Newell, N A Turgeon, A S Chami, A Guasch, A D Kirk, S O Pastan, T C Pearson, C P Larsen
Belatacept, a T cell costimulation-blocker demonstrated superior renal function, lower cardiovascular risk, and improved graft/patient survival in renal transplant recipients. Despite the potential benefits, adoption of belatacept has been limited in part due to concerns regarding higher rates and grades of acute rejection in clinical trials. Since July 2011 we have utilized belatacept-based immunosuppression regimens in clinical practice. In this retrospective analysis of 745 patients undergoing renal transplantation at our center, we compared patients treated with belatacept (n=535) to a historical cohort receiving a tacrolimus-based protocol (n=205)...
May 23, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28543644/detection-of-viral-hepatitis-e-in-clinical-liver-biopsies
#10
Sandrine Prost, Claire L Crossan, Harry R Dalton, Robert A De Man, Nassim Kamar, Janick Selves, Catharine Dhaliwal, Linda Scobie, Christopher O C Bellamy
AIMS: to determine the relative utility of in situ testing for hepatitis E virus (HEV) RNA and paraffin section PCR to diagnose HEV infection in paraffin-embedded clinical liver biopsies, and to correlate with clinico-pathological characteristics. METHODS AND RESULTS: We evaluated in situ and quantitative PCR (qPCR)-based approaches to identifying HEV in clinical liver biopsies from infected patients from multiple centers, correlating with clinical setting (immunocompetent, allograft or immunosuppressed native liver) and histologic findings...
May 24, 2017: Histopathology
https://www.readbyqxmd.com/read/28542608/increase-in-complement-ic3b-is-associated-with-anti-inflammatory-cytokine-expression-during-late-pregnancy-in-mice
#11
Keigo Nakamura, Kazuya Kusama, Rulan Bai, Sadamasa Ishikawa, Sayuri Fukushima, Yoshihito Suda, Kazuhiko Imakawa
Immunological tolerance between fetal allograft and mother is crucial for pregnancy establishment and maintenance; however, these mechanisms particularly those during the latter part of pregnancy have not been definitively elucidated. The aim of this study was to examine the presence and potential function of innate immunity characteristic to the middle to late pregnancy. We first characterized up-regulated proteins in decidua from day 11 pregnant (P11) mice using 2D-PAGE, followed by MALDI-TOF/MS analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28542109/application-and-interpretation-of-histocompatibility-data-in-pediatric-kidney-transplantation
#12
Hilda E Fernandez
PURPOSE OF REVIEW: Advances in technology to assess immunologic risk in solid organ transplant offer an opportunity to optimize the approach to pediatric deceased donor kidney transplant in the setting of a new allocation system in the United States. RECENT FINDINGS: Degree of human leukocyte antigen (HLA) mismatch, class II HLA mismatch, unacceptable antigens and donor-specific antibody (DSA) detected by solid-phase assays, and epitope matching pretransplant affect pediatric kidney transplant outcomes...
May 24, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28540902/primary-focal-segmental-glomerulosclerosis-recurring-rapidly-as-collapsing-glomerulopathy-in-a-renal-allograft-recipient
#13
Vinita Agrawal, Narayan Prasad, Pritpal Singh
Recurrent focal segmental glomerulosclerosis (FSGS) develops in about 30%-40% of patients of FSGS undergoing renal transplantation. We report a patient who received a live- related renal transplant for end-stage renal disease due to a primary FSGS (not otherwise specified) in the native kidney and presented with graft dysfunction in the immediate posttransplant period. The first and the second biopsy showed no evidence of rejection or glomerular lesion. A repeat biopsy done on the 30th day revealed recurrent FSGS morphologically presenting as collapsing variant...
May 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28540837/enterovesical-fistula-after-enteric-conversion-of-a-bladder-drained-pancreatic-allograft-a-case-report
#14
Clifford Akateh, Amer Rajab, Mitchell Henry, Ashraf El-Hinnawi
Since the inception of pancreas transplant as a treatment for type 1 diabetes mellitus, there has been considerable debate about the best way to manage exocrine secretions and monitor patients for graft rejection. For patients who undergo bladder exocrine drainage of a pancreatic allograft, a bladder-to-enteric drainage conversion can serve as a rescue procedure in case of anastomotic leaks or other complications. However, this procedure is associated with its own complications, including a rarely described enterovesical fistula...
May 22, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28540243/knowing-the-allograft-s-destiny
#15
EDITORIAL
Vinayak S Rohan, Kenneth D Chavin
No abstract text is available yet for this article.
April 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28540063/microrna-122-ameliorates-corneal-allograft-rejection-through-the-downregulation-of-its-target-cpeb1
#16
Ting Wang, Fengjie Li, Wenwen Geng, Qingguo Ruan, Weiyun Shi
Transplant rejection is a major cause of corneal transplantation failure. MicroRNAs (miRNAs) are a family of small RNAs that regulates gene expression in a sequence-specific manner. miRNAs have recently been shown to have important roles in human organ transplantation, but reports of miRNAs directly associated with corneal transplantation rejection remain limited. To investigate the role of miRNAs during corneal allograft rejection, we established a mouse penetrating keratoplasty model and used microarrays to screen for differentially expressed miRNAs...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28539707/effector-and-regulatory-t-cell-trafficking-in-corneal-allograft-rejection
#17
REVIEW
Afsaneh Amouzegar, Sunil K Chauhan
Corneal transplantation is among the most prevalent and successful forms of solid tissue transplantation in humans. Failure of corneal allograft is mainly due to immune-mediated destruction of the graft, a complex and highly coordinated process that involves elaborate interactions between cells of innate and adaptive immunity. The migration of immune cells to regional lymphoid tissues and to the site of graft plays a central role in the immunopathogenesis of graft rejection. Intricate interactions between adhesion molecules and their counter receptors on immune cells in conjunction with tissue-specific chemokines guide the trafficking of these cells to the draining lymph nodes and ultimately to the site of graft...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28538571/angiosome-based-allografts-vascularized-composite-allotransplantation-for-tailored-subunit-reconstruction-with-volkmann-ischemic-contracture-as-a-case-in-point
#18
G Ian Taylor, David S Sparks, Adam C Gascoigne, Russell J Corlett, Mark W Ashton
BACKGROUND: As we enter an age with new approaches to tissue reconstruction, the emphasis on the adage "like for like" has become even more relevant. This study illustrates the potential for several tailored vascularized composite allotransplantation reconstructive techniques and, in particular, for the management of Volkmann contracture. METHODS: Twenty fresh cadaver dissections and 30 archival lead oxide radiographic studies were examined to (1) identify potential upper limb vascularized composite allotransplantation donor sites (i...
June 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28538243/bk-virus-as-a-mediator-of-graft-dysfunction-following-kidney-transplantation
#19
Stephanie G Yi, Richard J Knight, Keri E Lunsford
PURPOSE OF REVIEW: BK virus is a significant risk factor for kidney allograft dysfunction and loss among renal transplant recipients. Currently, there is no proven effective treatment except for the reduction of immunosuppression. In this review, we discuss diagnostic challenges and current treatment options for BK in kidney transplant recipients. RECENT FINDINGS: Antiviral and antibiotic therapies have been employed for BK viraemia with variable efficacy. In addition, novel therapeutic regimens such as adoptive transfer of targeted T cells have been described as possible treatment options for recipients with BK nephropathy...
May 22, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28537526/composite-biomaterial-as-a-carrier-for-bone-active-substances-for-metaphyseal-tibial-bone-defect-reconstruction-in-rats
#20
Peter Frederik Horstmann, Deepak Raina, Hanna Isaksson, Werner Hettwer, Lars Lidgren, Michael Mørk Petersen, Magnus Tägil
Restoring lost bone is a major challenge in orthopedic surgery. Currently available treatment-strategies all have shortcomings, like risk of infection, non-union and excessive resorption. Our primary aim was to study if a commercially available gentamicin-containing composite calcium sulphate/hydroxyapatite biomaterial (GBM) could serve as a carrier for local delivery of bone morphogenic protein-2 (BMP-2) and zoledronic acid (ZA) in a tibia defect-model in rats. Empty and allograft-filled defects were used as controls...
May 24, 2017: Tissue Engineering. Part A
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