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https://www.readbyqxmd.com/read/29454235/donor-and-recipient-p450-gene-polymorphisms-influence-individual-pharmacological-effects-of-tacrolimus-in-chinese-liver-transplantation-patients
#1
Jianyu Liu, Yabo Ouyang, Dexi Chen, Bo Yao, Dongdong Lin, Zhiqiang Li, Yunjin Zang, Huan Liu, Xiaoyue Fu
The immunosuppressant drug tacrolimus (Tac) used for the prevention of immunological rejection is a metabolic substrate of cytochrome P450 enzymes. This study was designed to evaluate the short-term and long-term potential influence of single-nucleotide polymorphisms (SNPs) in CYP450 genes of liver transplant (LT) recipients as well as the donors on individual pharmacological effects of Tac and to guide individualized-medication from the perspective of pharmacogenomics. Twenty-one SNPs of the CYP450 gene were genotyped for both recipients and donors in 373 LT patients receiving Tac-based immunosuppressants...
February 14, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29454158/polyisocyanopeptide-hydrogels-a-novel-thermo-responsive-hydrogel-supporting-pre-vascularization-and-the-development-of-organotypic-structures
#2
Jakub Zimoch, Joan Simó Padial, Agnes S Klar, Queralt Vallmajo-Martin, Martin Meuli, Thomas Biedermann, Christopher J Wilson, Alan Rowan, Ernst Reichmann
Molecular and mechanical interactions with the 3D extracellular matrix are essential for cell functions such as survival, proliferation, migration, and differentiation. Thermo-responsive biomimetic polyisocyanopeptide (PIC) hydrogels are promising new candidates for 3D cell, tissue, and organ cultures. This is a synthetic, thermo-responsive and stress-stiffening material synthesized via polymerization of the corresponding monomers using a nickel perchlorate as a catalyst. It can be tailored to meet various demands of cells by modulating its stiffness and through the decoration of the polymer with short GRGDS peptides using copper free click chemistry...
February 14, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29454090/characterization-of-vasa-homolog-in-a-neotropical-catfish-jundi%C3%A3-rhamdia-quelen-molecular-cloning-and-expression-analysis-during-embryonic-and-larval-development
#3
Juliana M B Ricci, Emanuel R M Martinez, Arno J Butzge, Lucas B Doretto, Marcos A Oliveira, Robie Allan Bombardelli, Jan Bogerd, Rafael H Nóbrega
We have characterized the full-length vasa cDNA from Jundiá, Rhamdia quelen (Heptapteridae, Siluriformes). vasa encodes a member of the DEAD-box protein family of ATP-dependent RNA helicases. This protein is highly conserved among different organisms and its role is associated with RNA metabolism. In the majority of the investigated species, vasa is restricted to the germ cell lineage and its expression has been used to study germline development in many organisms, including fish. The deduced R. quelen vasa amino acid sequence displayed high similarity with Vasa protein sequences from other organisms, and did not cluster with PL10 or P68 DEAD-box protein subfamilies...
February 14, 2018: Gene
https://www.readbyqxmd.com/read/29454069/recipient-characteristics-and-morbidity-and-mortality-after-liver-transplantation
#4
Sumeet K Asrani, Giovanna Saracino, Jacqueline G O'Leary, Stevan Gonzales, Peter Kim, Greg McKenna, Goran Klintmalm, James Trotter
BACKGROUND: Over the last decade, liver transplantation of sicker, older non-hepatitis C cirrhotics with multiple co-morbidities has increased in the United States. METHODS: We sought to identify a parsimonious set of recipient factors among HCV negative adult transplant recipients associated with significant morbidity and mortality within 5 years after liver transplantation using national (n=31,829, 2002-2015) and center specific data. Coefficients of relevant recipient factors were converted to weighted points and scaled from 0-5...
February 14, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29454040/development-of-an-unrelated-donor-selection-score-predictive-of-survival-after-hct-donor-age-matters-most
#5
Bronwen E Shaw, Brent R Logan, Stephen R Spellman, Steven G E Marsh, James Robinson, Joseph Pidala, Carolyn Hurley, Juliet Barker, Martin Maiers, Jason Dehn, Hailin Wang, Mike Haagenson, David Porter, Effie W Petersdorf, Ann Woolfrey, Mary M Horowitz, Michael Verneris, Katharine C Hsu, Katharina Fleischhauer, Stephanie J Lee
Donor factors, in addition to HLA matching status, have been associated with recipient survival in unrelated donor (URD) hematopoietic cell transplantation (HCT), however there is no hierarchical algorithm that weights the characteristics of individual donors against each other in a quantitative manner to facilitate donor selection. The goal of this study was to develop and validate a donor selection score that prioritizes donor characteristics associated with better survival in 8/8 HLA-matched URDs. Two separate patient/donor cohorts, the first receiving HCT between 1999-2011 (n=5952, c1), and the second between 2012-2014 (n=4510, c2) were included in the analysis...
February 14, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29453974/genetically-modified-bone-mesenchymal-stem-cells-with-tgf-%C3%AE-3-improve-wound-healing-and-reduce-scar-tissue-formation-in-a-rabbit-model
#6
Mingyong Li, Lin Qiu, Wei Hu, Xiang Deng, Hanfeng Xu, Youhan Cao, Zijian Xiao, Liangyu Peng, Shawn Johnson, Lyundup Alexey, Paul A Kingston, Qing Li, Yuanyuan Zhang
Extensive scar tissue formation often occurs after severe burn injury, trauma, or as one of complications after surgical intervention. Despite significant therapeutic advances, it is still a significant challenge to manage massive scar tissue formation while also promoting normal wound healing. The goal of this study was to investigate the therapeutic effect of bone mesenchymal stem cells (BMSCs) that were genetically modified to overexpress transforming growth factor-beta 3 (TGF-β 3 ), an inhibitor of myofibroblast proliferation and collagen type I deposition, on full-thickness cutaneous wound healing in a rabbit model...
February 14, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29453887/coronary-artery-disease-in-heart-transplantation-new-concepts-for-an-old-disease
#7
REVIEW
Mandy Langstraat, Kyra J S Musters, Olivier Manintveld, Marco Masetti, Luciano Potena
BACKGROUND: Cardiac allograft vasculopathy (CAV) remains one of the main long-term complications after heart transplantation. We performed a systematic review focused on articles published in the previous 6 years to reappraise the novel evidences supporting risk-factors, pathology, prevention and treatment of CAV. METHODS: We identified a search string for a literature search on PubMed. We excluded articles specifically focused on diagnosis/biomarkers/imaging only or complications of other diseases...
February 17, 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29453879/defining-outcomes-for-%C3%AE-cell-replacement-therapy-in-the-treatment-of-diabetes-a-consensus-report-on-the-igls-criteria-from-the-ipita-epita-opinion-leaders-workshop
#8
REVIEW
Michael R Rickels, Peter G Stock, Eelco J P de Koning, Lorenzo Piemonti, Johann Pratschke, Rodolfo Alejandro, Melena D Bellin, Thierry Berney, Pratik Choudhary, Paul R Johnson, Raja Kandaswamy, Thomas W H Kay, Bart Keymeulen, Yogish C Kudva, Esther Latres, Robert M Langer, Roger Lehmann, Barbara Ludwig, James F Markmann, Marjana Marinac, Jon S Odorico, François Pattou, Peter A Senior, James A M Shaw, Marie-Christine Vantyghem, Steven White
β-cell replacement therapy, available currently as pancreas or islet transplantation, has developed without a clear definition of graft functional and clinical outcomes. The International Pancreas & Islet Transplant Association (IPITA) and European Pancreas & Islet Transplantation Association (EPITA) held a workshop to develop consensus for an IPITA/EPITA Statement on the definition of function and failure of current and future forms of β-cell replacement therapy. There was consensus that β-cell replacement therapy could be considered as a treatment for β-cell failure, regardless of etiology and without requiring undetectable C-peptide, accompanied by glycemic instability with either problematic hypoglycemia or hyperglycemia...
February 17, 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29453878/estimated-gfr-in-stable-older-kidney-transplant-recipients-are-present-algorithms-valid-a-national-cross-sectional-cohort-study
#9
Kristian Heldal, Karsten Midtvedt, Anders Hartmann, Anna Varberg Reisaeter, Torbjørn Fossum Heldal, Stein Bergan, Cathrin Lytomt Salvador, Anders Åsberg
Several equations have been developed for estimated glomerular filtration rate (eGFR) in patients with chronic kidney disease (CKD), but none were developed based on data from elderly kidney transplant recipients (KTR). The primary aim of this study was to evaluate different creatinine based equations in stable elderly KTR. A national cross-sectional study was performed using data from 263 consecutive kidney transplant recipients 60 years or older who performed a routine GFR measurement one year after engraftment...
February 17, 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29453871/examining-the-incidence-and-presentation-of-melanoma-in-the-cardiothoracic-transplant-population
#10
Charles J Puza, Adela R Cardones, Paul J Mosca
Importance: The immunosuppression vital to maintaining transplanted organs comes with an increased incidence of cutaneous neoplasms. Understanding the genesis of malignant melanoma (MM) in transplant subpopulations is necessary for adequate disease surveillance. Objective: To determine the incidence and timing of presentation of MM in the cardiothoracic (heart and/or lung) transplant (CTT) population. Design, Setting, and Participants: This was a retrospective cohort study of 1164 patients who underwent a CTT from 2001 through 2016 with a median follow-up time of 4...
February 16, 2018: JAMA Dermatology
https://www.readbyqxmd.com/read/29453832/living-donor-liver-transplantation-for-mild-zellweger-spectrum-disorder-up-to-17-years-follow-up
#11
Tanguy Demaret, Sharat Varma, Xavier Stephenne, Françoise Smets, Isabelle Scheers, Ronald Wanders, Lionel Van Maldergem, Raymond Reding, Etienne Sokal
Mild Zellweger spectrum disorder, also described as Infantile Refsum disease, is attributable to mutations in PEX genes. Its clinical course is characterized by progressive hearing and vision loss, and neurodevelopmental regression. Supportive management is currently considered the standard of care, as no treatment has shown clinical benefits. LT was shown to correct levels of circulating toxic metabolites, partly responsible for chronic neurological impairment. Of three patients having undergone LT for mild ZSD, one died after LT, while the other two displayed significant neurodevelopmental improvement on both the long-term (17 years post-LT) and short-term (9 months post-LT) follow-up...
February 16, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29453829/proposal-for-new-selection-criteria-considering-pre-transplant-muscularity-and-visceral-adiposity-in-living-donor-liver-transplantation
#12
Yuhei Hamaguchi, Toshimi Kaido, Shinya Okumura, Atsushi Kobayashi, Hisaya Shirai, Siyuan Yao, Shintaro Yagi, Naoko Kamo, Hideaki Okajima, Shinji Uemoto
BACKGROUND: The significance of pre-operative body composition has recently attracted much attention in various diseases. However, cut-off values for these parameters remain undetermined, and these factors are not currently included in selection criteria for recipients of living donor liver transplantation (LDLT). METHODS: Using computed tomography of 657 donors for LDLT, skeletal muscle mass, muscle quality, and visceral adiposity were evaluated by using skeletal muscle mass index (SMI), intramuscular adipose tissue content (IMAC), and visceral-to-subcutaneous adipose tissue area ratio (VSR)...
February 17, 2018: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29453811/multimodal-treatment-including-tandem-high-dose-chemotherapy-and-autologous-stem-cell-transplantation-in-children-with-anaplastic-ependymomas
#13
Ji Won Lee, Do Hoon Lim, Ki Woong Sung, Hyeong Jin Lee, Eun Sang Yi, Keon Hee Yoo, Hong Hoe Koo, Yeon-Lim Suh, Hyung Jin Shin
In this study, we evaluated the results of multimodal treatment that included tandem HDCT/auto-SCT in children with anaplastic ependymomas. Fourteen patients with anaplastic ependymomas were enrolled from 2006 to 2014. Six cycles of induction chemotherapy were administered to all patients before they underwent tandem HDCT/auto-SCT. Patients who were older than 3 years of age were administered RT after two cycles of induction chemotherapy. In patients under 3 years of age, RT was either omitted or delayed until they reached 3 years of age, if the patients experienced CR after tandem HDCT/auto-SCT...
February 16, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29453782/unusual-spontaneous-porto-systemic-shunt-the-importance-of-diagnosing-non-anatomical-porto-systemic-shunts-to-improve-portal-flow-in-pediatric-living-related-liver-transplantation-case-report
#14
Juan S Rubio, Carolina Rumbo, Pablo A Farinelli, Nicolás Aguirre, Diego A Ramisch, Hugo Paladini, Pablo D Angelo, Pablo Barros Schelotto, Gabriel E Gondolesi
Collateral circulation secondary to liver cirrhosis may cause the development of large PSSs that may steal flow from the main portal circulation. It is important to identify these shunts prior to, or during the transplant surgery because they might cause an insufficient portal flow to the implanted graft. There are few reports of "steal flow syndrome" cases in pediatrics, even in biliary atresia patients that may have portal hypoplasia as an associated malformation. We present a 12-month-old female who received an uneventful LDLT from her mother, and the GRWR was 4...
February 16, 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29453733/egfp-transgene-a-useful-tool-to-track-transplanted-bone-marrow-mononuclear-cell-contribution-to-peripheral-remyelination
#15
Gonzalo Piñero, Vanina Usach, Paula A Soto, Paula V Monje, Patricia Setton-Avruj
Bone marrow mononuclear cells (BMMC) constitute a heterogeneous population with potential to promote tissue regeneration. For this reason, this cell fraction has recently become a therapeutic alternative to mesenchymal stem cells, as culture is not required and phenotypic transformations can be hence avoided. In this work, and in order to attain long-lasting cell labeling and study longer survival times, we used BMMC isolated from adult transgenic rats expressing GFP to reproduce our wild type model and evaluate their remyelination ability in a reversible model of Wallerian degeneration...
February 16, 2018: Transgenic Research
https://www.readbyqxmd.com/read/29453486/immune-system-and-kidney-transplantation
#16
Badri Man Shrestha
The immune system recognises a transplanted kidney as foreign body and mounts immune response through cellular and humoral mechanisms leading to acute or chronic rejection, which ultimately results in graft loss. Over the last five decades, there have been significant advances in the understanding of the immune responses to transplanted organs in both experimental and clinical transplant settings. Modulation of the immune response by using immunosuppressive agents has led to successful outcomes after kidney transplantation...
October 2017: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/29453447/embryonic-stem-cell-transplants-as-a-therapeutic-strategy-in-a-rodent-model-of-autism
#17
Jennifer J Donegan, Angela M Boley, Daniel J Lodge
Autism is a neurodevelopmental disorder characterized by disruptions in three core behavioral domains: deficits in social interaction, impairments in communication, and repetitive and stereotyped patterns of behavior or thought. There are currently no drugs available for the treatment of the core symptoms of ASD and drugs that target comorbid symptoms often have serious adverse side effects, suggesting an urgent need for new therapeutic strategies. The neurobiology of autism is complex, but converging evidence suggests that ASD involves disruptions in the inhibitory GABAergic neurotransmitter system...
February 7, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29453429/human-neutrophils-can-mimic-myeloid-derived-suppressor-cells-pmn-mdsc-and-suppress-microbead-or-lectin-induced-t-cell-proliferation-through-artefactual-mechanisms
#18
Dmitri Negorev, Ulf H Beier, Tianyi Zhang, Jon G Quatromoni, Pratik Bhojnagarwala, Steven M Albelda, Sunil Singhal, Evgeniy Eruslanov, Falk W Lohoff, Matthew H Levine, Joshua M Diamond, Jason D Christie, Wayne W Hancock, Tatiana Akimova
We report that human conventional CD15 + neutrophils can be isolated in the peripheral blood mononuclear cell (PBMC) layer during Ficoll gradient separation, and that they can impair T cell proliferation in vitro without concomitant neutrophil activation and killing. This effect was observed in a total of 92 patients with organ transplants, lung cancer or anxiety/depression, and in 18 healthy donors. Although such features are typically associated in the literature with the presence of certain myeloid-derived suppressor cell (PMN-MDSC) populations, we found that commercial centrifuge tubes that contained membranes or gels for PBMC isolation led to up to 70% PBMC contamination by CD15 + neutrophils, with subsequent suppressive effects in certain cellular assays...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453407/neovasculature-can-be-induced-by-patching-an-arterial-graft-into-a-vein-a-novel-in-vivo-model-of-spontaneous-arteriovenous-fistula-formation
#19
Yukinobu Ito, Makoto Yoshida, Daichi Maeda, Masato Takahashi, Hiroshi Nanjo, Hirotake Masuda, Akiteru Goto
Arteriovenous malformations consist of tangles of arteries and veins that are often connected by a fistula. The causes and mechanisms of these clinical entities are not fully understood. We discovered that suturing an arterial patch into the common jugular vein of rabbits led to spontaneous neovascularization, the formation of an arteriovenous fistula and the development of an arteriovenous shunt. An arterial patch excised from the common carotid artery was sutured into the common jugular vein. Within a month, a dense nidus-like neovasculature formed around the patch...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29453224/simple-limbal-epithelial-transplantation-slet-in-failed-cultivated-limbal-epithelial-transplantation-clet-for-unilateral-chronic-ocular-burns
#20
Sayan Basu, Sashwanthi Mohan, Swapnil Bhalekar, Vivek Singh, Virender Sangwan
AIMS: Cultivated limbal epithelial transplantation (CLET) fails in around 20%-30% of cases. This study aimed to report the clinical outcomes of autologous simple limbal epithelial transplantation (SLET) in eyes with recurrent unilateral limbal stem cell deficiency (LSCD) due to failure of CLET. METHODS: This was a prospective case series which included 30 eyes of 30 patients who underwent SLET between 2010 and 2016 after failure of one (n=24) or two (n=6) previous CLET procedures for chronic unilateral ocular burns...
February 16, 2018: British Journal of Ophthalmology
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