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https://www.readbyqxmd.com/read/28651250/a-role-for-neuronal-alpha-synuclein-in-gastrointestinal-immunity
#1
Ethan Stolzenberg, Deborah Berry, De Yang, Ernest Y Lee, Alexander Kroemer, Stuart Kaufman, Gerard C L Wong, Joost J Oppenheim, Supti Sen, Thomas Fishbein, Ad Bax, Brent Harris, Denise Barbut, Michael A Zasloff
BACKGROUND: Alpha-synuclein (αS) is a nerve cell protein associated with Parkinson disease (PD). Accumulation of αS within the enteric nervous system (ENS) and its traffic from the gut to the brain are implicated in the pathogenesis and progression of PD. αS has no known function in humans and the reason for its accumulation within the ENS is unknown. Several recent studies conducted in rodents have linked αS to immune cell activation in the central nervous system. We hypothesized that αS in the ENS might play a role in the innate immune defenses of the human gastrointestinal (GI) tract...
June 27, 2017: Journal of Innate Immunity
https://www.readbyqxmd.com/read/28651015/acute-rejection-after-kidney-transplantation-promotes-graft-fibrosis-with-elevated-adenosine-level-in-rat
#2
Mingliang Li, Yingbo Dai, Jun Lei, Jin Tang, Yihong Zhou, Bing Xia, Yang Xia, Guangming Yin
AIMS: Chronic allograft nephropathy is a worldwide issue with the major feature of progressive allograft fibrosis, eventually ending with graft loss. Adenosine has been demonstrated to play an important role in process of fibrosis. Our study aimed to investigate the relationship between adenosine and fibrosis in renal allograft acute rejection in rat. MATERIALS AND METHODS: Wistar rats and SD rats were selected as experimental animals. Our study designed two groups...
2017: PloS One
https://www.readbyqxmd.com/read/28650883/iliac-crest-bone-graft-a-minimally-invasive-harvesting-technique
#3
Gregory D Lopez, Fady Y Hijji, Ankur S Narain, Kelly H Yom, Kern Singh
Typical sources for graft material utilized in minimally invasive transforaminal lumbar interbody fusion include both autograft and allograft. Autograft is frequently utilized due to its theorized benefits in promoting fusion. During minimally invasive transforaminal lumbar interbody fusion, autograft is often obtained locally during the laminectomy and facetectomy. However, this locally obtained bone graft has exhibited questionable osteoconductive properties, often necessitating the addition of biologics to improve fusion rates...
June 23, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28650094/hydroxyapatite-polymer-biocomposites-for-bone-regeneration-a-review-of-current-trends
#4
REVIEW
Niranjan Ramesh, Stephen C Moratti, George J Dias
Bone tissue engineering has emerged as one of the most indispensable approaches to address bone trauma in the past few decades. This approach offers an efficient and a risk-free alternative to autografts and allografts by employing a combination of biomaterials and cells to promote bone regeneration. Hydroxyapatite (HA) is a ceramic biomaterial that mimics the mineral composition of bones and teeth in vertebrates. HA, commonly produced via several synthetic routes over the years has been found to exhibit good bioactivity, biocompatibility, and osteoconductivity under both in vitro and in vivo conditions...
June 26, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28649247/an-antigen-presenting-and-apoptosis-inducing-polymer-microparticle-prolongs-alloskin-graft-survival-by-selectively-and-markedly-depleting-alloreactive-cd8-t-cells
#5
Wei Wang, Khawar Ali Shahzad, Miaochen Li, Aifeng Zhang, Lei Zhang, Tao Xu, Xin Wan, Chuanlai Shen
Selectively depleting the pathogenic T cells is a fundamental strategy for the treatment of allograft rejection and autoimmune disease since it retains the overall immune function of host. The concept of killer artificial antigen-presenting cells (KaAPCs) has been developed by co-coupling peptide-major histocompatibility complex (pMHC) multimer and anti-Fas monoclonal antibody (mAb) onto the polymeric microparticles (MPs) to induce the apoptosis of antigen-specific T cells. But little information is available about its in vivo therapeutic potential and mechanism...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28648933/effectiveness-and-safety-of-two-18-gauge-needle-types-on-native-and-allograft-renal-biopsies
#6
Clarissa A Cassol, Juarez R Braga, Samer Dabbo, K Khalili, C Avila-Casado
Percutaneous biopsy is a key diagnostic tool for both native and allograft kidney diseases. Adequacy criteria vary, but at a minimum, a biopsy should allow the pathologist to reach a diagnosis and provide prognostic information such as the degree of interstitial fibrosis and tubular atrophy (IF/TA) and percentage of glomerulosclerosis. Whereas most studies use glomerular counts as a surrogate for biopsy adequacy, the amount and preservation of tubulointerstitium is equally important, considering IF/TA is a major prognostic parameter for most medical renal diseases...
June 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28647211/tubuloreticular-inclusions-in-peritubular-capillaries-of-renal-allografts
#7
Jee Youn Lee, Seung Hwan Song, Yu Seun Kim, Beom Jin Lim, Soon Il Kim, Myoung Soo Kim, Hyeon Joo Jeong
BACKGROUND: Tubuloreticular inclusions (TRIs) are anastomosing networks of microtubules that are frequently found in autoimmune diseases and viral infections. In renal allografts, TRIs have been reported in glomerular endothelial cells in association with viral infections and donor specific antibodies (DSAs), but their presence in peritubular capillaries has not been explored. METHODS: We collected seven cases with TRIs out of 148 consecutive renal allograft biopsies taken from Dec...
June 6, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28647206/ct-at-onset-of-chronic-lung-allograft-dysfunction-in-lung-transplant-patients-predicts-development-of-the-restrictive-phenotype-and-survival
#8
Sabine Dettmer, Hoen-Oh Shin, Jens Vogel-Claussen, Max Westphal, Axel Haverich, Gregor Warnecke, Tobias Welte, Frank Wacker, Jens Gottlieb, Hendrik Suhling
PURPOSE: To describe early signs for restrictive subtype of chronic lung allograft dysfunction (CLAD) after lung transplantation in computed tomography (CT) and to evaluate the predictive value for disease progression and survival. MATERIAL AND METHODS: 52 CT examinations in lung transplant patients at CLAD onset were scored for CT features referring to airways disease, parenchymal or pleural abnormality. Patients with and without later development of restrictive CLAD (TLC≤80%) were compared...
June 15, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28647193/cryopreserved-venous-allograft-is-an-acceptable-conduit-in-patients-with-current-or-prior-angioaccess-graft-infection
#9
Michael P Harlander-Locke, Peter F Lawrence, Aamna Ali, Esther Bae, James Kohn, Christopher Abularrage, Michael Ricci, Gary W Lemmon, Sotero Peralta, Jeffrey Hsu
OBJECTIVE: The durability of cryopreserved allograft has been previously demonstrated in the setting of infection. The objective of this study was to examine the safety, efficacy, patency, and cost per day of graft patency associated with using cryopreserved allograft (vein and artery) for hemodialysis access in patients with no autogenous tissue for native fistula creation and with arteriovenous graft infection or in patients at high risk for infection. METHODS: Patients implanted with cryopreserved allograft for hemodialysis access between January 2004 and January 2014 were reviewed using a standardized, multi-institutional database that evaluated demographic, comorbidity, procedural, and outcomes data...
June 21, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28647182/preoperative-application-of-combination-of-portal-venous-injection-of-donor-spleen-cells-and-intraperitoneal-injection-of-rapamycin-prolongs-the-survival-of-cardiac-allografts-in-mice
#10
Wen-Lin Gong, Chuang Sha, Gang Du, Zhong-Gui Shan, Zhong-Quan Qi, Su-Fang Zhou, Nuo Yang, Yong-Xiang Zhao
OBJECTIVE: To investigate the effects of preoperative portal venous injection of donor spleen cells (PVIDSC) and intraperitoneal injection of rapamycin in the acute rejection of cardiac allograft in mice and the underlying mechanisms. METHODS: Homogenous female B6 mice and BALB/c mice were used as recipients and donors of heart transplantation. These mice were randomly divided into different groups and received PVIDSC alone, rapamycin alone, or PVIDSC and rapamycin combined therapy...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28646824/bone-marrow-aspirate-concentrate-versus-platelet-rich-plasma-to-enhance-osseous-integration-potential-for-osteochondral-allografts
#11
Aaron M Stoker, Charles A Baumann, James P Stannard, James L Cook
No abstract text is available yet for this article.
June 24, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28646420/composite-reverse-shoulder-arthroplasty-can-provide-good-function-and-quality-of-life-in-cases-of-malignant-tumour-of-the-proximal-humerus
#12
Cyril Lazerges, Louis Dagneaux, Benjamin Degeorge, Nicolas Tardy, Bertrand Coulet, Michel Chammas
PURPOSE: Management of proximal humeral tumours remains a surgical challenge. No study to date has assessed the quality of life scores following the composite reverse shoulder arthroplasty for this indication. We, therefore, evaluated function and quality of life following reconstruction with allograft for malignant tumour of the humerus. METHODS: A series of six cases of humeral tumour treated by a single surgeon in a single centre was reviewed after a mean follow-up of 5...
June 23, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28644241/long-term-ocular-surface-stability-in-conjunctival-limbal-autograft-donor-eyes
#13
Albert Y Cheung, Enrica Sarnicola, Edward J Holland
PURPOSE: To investigate the incidence of limbal stem cell deficiency (LSCD) in donor eyes after conjunctival limbal autograft (CLAU). METHODS: An observational retrospective review was performed on all patients who underwent CLAU alone, combined keratolimbal allograft with CLAU ("Modified Cincinnati Procedure"), or combined living-related conjunctival limbal allograft (lr-CLAL) with CLAU having ≥6 months of follow-up after surgery. The outcome measures were best-corrected visual acuity (BCVA) and ocular surface status...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28644238/prevention-and-management-of-descemet-membrane-endothelial-keratoplasty-complications
#14
Ruth Quilendrino, Marina Rodriguez-Calvo de Mora, Lamis Baydoun, Lisanne Ham, Korine van Dijk, Isabel Dapena, Silke Oellerich, Gerrit R J Melles
PURPOSE: To describe Descemet membrane endothelial keratoplasty (DMEK) complications and strategies for their prevention and management. METHODS: Five hundred consecutive eyes with DMEK of 393 patients were reviewed in this retrospective study for intraoperative and postoperative complications up to 2 years and for corresponding management. RESULTS: Intraoperative challenges (difficult graft unfolding/positioning, high vitreous pressure, iris root hemorrhage, and Descemet membrane remnants) were encountered in 81 eyes (16...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28643491/association-of-foxp3-polymorphism-with-allograft-outcome-in-kidney-transplantation
#15
Hyewon Park, Nuri Lee, Ji Won In, Eun Youn Roh, Kyoung Un Park, Sue Shin, Jaeseok Yang, Eun Young Song
BACKGROUND: Forkhead box P3 (Foxp3) is the most reliable marker for regulatory T cells, which play an important role in maintaining renal allograft tolerance. Recently, Foxp3 polymorphisms have been reported to be associated with graft outcome in kidney transplantation. We analyzed the association of Foxp3 polymorphisms with renal allograft outcome. METHODS: Foxp3 polymorphisms (rs3761548 A/C, rs2280883 C/T, rs5902434 del/ATT, and rs2232365 A/G) were tested by PCR with sequence-specific primers (PCR-SSP) in 231 adult kidney transplantation recipients from 1996-2004 at Seoul National University Hospital...
September 2017: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/28642671/subchondral-raft-construction-with-locking-plates-for-the-treatment-of-schatzker-type-ii-fractures
#16
Cemil Kayali, Caner Citak, Taskin Altay, Zafer Kement
OBJECTIVES: To evaluate the functional and radiological results of Schatzker type II fractures treated via subchondral raft screws combined with locking plates. METHODS: Twenty-four individuals were enrolled in this study between 2010 and 2014. The depressed joint line was elevated and the defect was filled with allograft. Next, two or three subchondral screws were placed in combination with a locking plate. At the last follow-up, clinical and radiological data were recorded...
May 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28640792/alloimmunization-after-cryopreserved-arterial-allografts-in-a-patient-on-a-kidney-transplantation-waiting-list
#17
Cyril Garrouste, Eugenio Rosset, Fabienne Quainon, Julien Aniort, Anne Elisabeth Heng
No abstract text is available yet for this article.
July 2017: Transplantation
https://www.readbyqxmd.com/read/28640458/long-term-graft-survival-in-patients-with-chronic-antibody-mediated-rejection-with-persistent-peritubular-capillaritis-treated-with-intravenous-immunoglobulin-and-rituximab
#18
William R Mulley, Louis L Huang, Sharmila Ramessur Chandran, Anthony Longano, Liv A R Amos, Kevan R Polkinghorne, David J Nikolic-Paterson, John Kanellis
Chronic antibody mediated rejection (cAMR) is the major cause of premature renal allograft loss and is resistant to therapy with 12-month graft failure of up to 50% reported. We examined the duration of graft survival and associates of graft failure in patients with donor specific antibody positive cAMR and treatment-resistant peritubular capillaritis between June 2007 and October 2010. Those with advanced interstitial fibrosis (n=5) were excluded. Included patients (n=24) received treatment with high-dose intravenous immunoglobulin and fixed-dose rituximab (500mg)...
June 22, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28640063/pharmacodynamic-monitoring-of-tacrolimus-based-immunosuppression-in-cd14-monocytes-after-kidney-transplantation
#19
Nynke M Kannegieter, Dennis A Hesselink, Marjolein Dieterich, Gretchen N De Graav, Rens Kraaijeveld, Ajda T Rowshani, Pieter Jm Leenen, Carla C Baan
BACKGROUND: Monocytes significantly contribute to ischemia reperfusion injury and allograft rejection after kidney transplantation. However, the knowledge about the effects of immunosuppressive drugs on monocyte activation is limited. Conventional pharmacokinetic methods for immunosuppressive drug monitoring are not cell type-specific. In this study, phosphorylation of three signaling proteins was measured to determine the pharmacodynamic effects of immunosuppression on monocyte activation in kidney transplant patients...
June 19, 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28639977/topical-delivery-of-immunosuppression-to-prolong-xenogeneic-and-allogeneic-split-thickness-skin-graft-survival
#20
Melissa Mastroianni, Zhi Yang Ng, Ritu Goyal, Christopher Mallard, Evan A Farkash, David A Leonard, Alexander Albritton, Kumaran Shanmugarajah, Josef M Kurtz, David H Sachs, Lauren K Macri, Joachim Kohn, Curtis L Cetrulo
Cadaveric skin allograft is the current standard of treatment for temporary coverage of large burn wounds. Porcine xenografts are viable alternatives but undergo α-1,3-galactose (Gal)-mediated hyperacute rejection and are lost by POD 3 because of naturally occurring antibodies to Gal in primate recipients. Using baboons, we previously demonstrated that xenografts from GalT-KO swine (lacking Gal) provided wound coverage comparable with allografts with systemic immunosuppression. In this study, we investigate topical immunosuppression as an alternative to prolong xenograft survival...
June 7, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
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