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https://www.readbyqxmd.com/read/27903738/tgf-%C3%AE-controls-the-formation-of-kidney-resident-t-cells-via-promoting-effector-t-cell-extravasation
#1
Chaoyu Ma, Shruti Mishra, Erika L Demel, Yong Liu, Nu Zhang
Tissue-resident memory T (TRM) cells, a population of noncirculating memory T cells, are one of the essential components of immunological memory in both mouse and human. Although CD69(+)CD103(+) TRM cells represent a major TRM cell population in barrier tissues including the mucosal surface and the skin, CD69(+)CD103(-) TRM cells dominate most nonbarrier tissues, such as the kidney. TGF-β is required for the differentiation of CD69(+)CD103(+) TRM cells in barrier tissues. However, the developmental control of CD69(+)CD103(-) TRM cells in nonbarrier tissues remains largely unknown and the involvement of TGF-β signaling is less clear...
November 30, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27899225/humoral-and-cellular-response-after-varicella-vaccination-in-vzv-igg-seronegative-kidney-transplant-candidates
#2
Marcia M L Kho, Joke M Zuijderwijk, Annemiek A van der Eijk, Ronella de Kuiper, Marieken J Boer-Verschragen, Willem Weimar, Nicole M van Besouw
BACKGROUND: In immunocompromised patients, primary infection with VZV may have a disastrous clinical course. Vaccination of VZV-seronegative patients on the waiting list for renal transplantation may prevent severe disease. However, the immunologic response of end-stage renal disease patients to peptide vaccines is far from optimal. Our question was whether end-stage renal disease patients with undetectable VZV-IgG levels were able to mount an adequate humoral and cellular response to a live attenuated varicella vaccine...
November 26, 2016: Vaccine
https://www.readbyqxmd.com/read/27890719/casting-a-smaller-net-into-a-bigger-donor-pool-a-single-center-s-experience-with-the-new-kidney-allocation-system
#3
Julie A Houp, Karl P Schillinger, Andrew J Eckstein, Renato M Vega, Niraj M Desai, Bonnie E Lonze, Annette M Jackson
The new Kidney Allocation System (KAS) provides additional allocation points for candidates with broad HLA sensitization in an effort to increase transplant rates for this underserved population. Following the implementation of KAS, our center lowered the HLA antibody threshold for listing unacceptable antigens from a cytotoxicity crossmatch level to a flow cytometric crossmatch level increasing Calculated Panel Reactive Antibody (CPRA) values and allocation points, yet restricting acceptable donor HLA phenotypes...
November 24, 2016: Human Immunology
https://www.readbyqxmd.com/read/27889299/safety-and-efficacy-outcomes-3-years-after-switching-to-belatacept-from-a-calcineurin-inhibitor-in-kidney-transplant-recipients-results-from-a-phase-2-randomized-trial
#4
Josep M Grinyó, Maria Del Carmen Rial, Josefina Alberu, Steven M Steinberg, Roberto C Manfro, Georgy Nainan, Flavio Vincenti, Charlotte Jones-Burton, Nassim Kamar
BACKGROUND: In a phase 2 study, kidney transplant recipients of low immunologic risk who switched from a calcineurin inhibitor (CNI) to belatacept had improved kidney function at 12 months postconversion versus those continuing CNI therapy, with a low rate of acute rejection and no transplant loss. STUDY DESIGN: 36-month follow-up of the intention-to-treat population. SETTING & PARTICIPANTS: CNI-treated adult kidney transplant recipients with stable transplant function (estimated glomerular filtration rate [eGFR], 35-75mL/min/1...
November 23, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/27881245/the-transplantex-initiative
#5
EDITORIAL
Seiamak Bahram, Raphael Carapito, Pierre-Antoine Gourraud, Dominique Charron
TRANSPLANTEX, a French "investment for the future" initiated consortium of leading transplant units and research laboratories across France and a number of European countries aims to unravel, through mainly high-throughput genomics (and other omics) analyses of donor and recipients, novel (a) non-HLA, histocompatibility antigens, whether inside, or outside the MHC; (b) pre/post transplantation biomarkers. This shall lead to our better understanding of the pathophysiology of (and eventually designing better therapeutics for) the graft-versus-host disease in hematopoietic cell transplants and that of chronic graft rejection after kidney transplant...
November 2016: Human Immunology
https://www.readbyqxmd.com/read/27872471/recent-progress-in-xenotransplantation-with-emphasis-on-virological-safety
#6
Joachim Denner
Xenotransplantation is a new technology that may help to overcome the shortage of human tissues and organs available for the treatment of tissue and organ failure. Remarkable progress has recently been made in this field. First, understanding of the mechanisms of immunological rejection, mainly of the hyperacute rejection, allowed generating numerous genetically modified pigs to overcome rejection. Second, based on these genetically modified animals and new immunosuppression regimens, long-term survival of non-human primate recipients of heart, kidney, and islet cell cells has been reported...
November 22, 2016: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/27871893/clinical-effects-of-pre-transplant-serum-25-hydroxyvitamin-d-level-on-post-transplant-immunologic-and-non-immunologic-outcomes-in-kidney-transplant-recipients
#7
Tae Hyun Ban, Jeong Ho Kim, Han Beol Jang, Yoon Seo Lee, Bum Soon Choi, Cheol Whee Park, Chul Woo Yang, Yong-Soo Kim, Byung Ha Chung
BACKGROUND: The aim of this study was to investigate the effects of pre-transplant serum 25-hydroxyvitamin D (25(OH)D) level on non-immunologic and immunologic aspects of post-transplant clinical outcomes in kidney transplant recipients (KTRs). METHODS: We investigated 174 KTRs with low immunologic risk at baseline. We divided the patients into three groups according to baseline serum 25(OH)D level and compared the post-transplant clinical outcomes of acute rejection, infectious complications, and osteoporosis among the groups...
November 18, 2016: Transplant Immunology
https://www.readbyqxmd.com/read/27871759/rabbit-atg-or-basiliximab-induction-for-rapid-steroid-withdrawal-after-renal-transplantation-harmony-an-open-label-multicentre-randomised-controlled-trial
#8
Oliver Thomusch, Michael Wiesener, Mirian Opgenoorth, Andreas Pascher, Rainer Peter Woitas, Oliver Witzke, Bernd Jaenigen, Markus Rentsch, Heiner Wolters, Thomas Rath, Tülay Cingöz, Urs Benck, Bernhard Banas, Christian Hugo
BACKGROUND: Standard practice for immunosuppressive therapy after renal transplantation is quadruple therapy using antibody induction, low-dose tacrolimus, mycophenolate mofetil, and corticosteroids. Long-term steroid intake significantly increases cardiovascular risk factors with negative effects on the outcome, especially post-transplantation diabetes associated with morbidity and mortality. In this trial, we examined the efficacy and safety parameters of rapid steroid withdrawal after induction therapy with either rabbit antithymocyte globulin (rabbit ATG) or basiliximab in immunologically low-risk patients during the first year after kidney transplantation...
November 18, 2016: Lancet
https://www.readbyqxmd.com/read/27871261/quantitative-characterization-of-t-cell-repertoire-and-biomarkers-in-kidney-transplant-rejection
#9
Houda Alachkar, Martin Mutonga, Taigo Kato, Sowjanya Kalluri, Yoichi Kakuta, Motohide Uemura, Ryoichi Imamura, Norio Nonomura, Vikas Vujjini, Sami Alasfar, Hamid Rabb, Yusuke Nakamura, Nada Alachkar
BACKGROUND: T-cell-mediated rejection (TCMR) remains a major cause of kidney allograft failure. The characterization of T-cell repertoire in different immunological disorders has emerged recently as a novel tool with significant implications. We herein sought to characterize T-cell repertoire using next generation sequencing to diagnose TCMR. METHODS: In this prospective study, we analyzed samples from 50 kidney transplant recipients. We collected blood and kidney transplant biopsy samples at sequential time points before and post transplant...
November 21, 2016: BMC Nephrology
https://www.readbyqxmd.com/read/27870356/clinical-and-immunological-relevance-of-antibodies-in-solid-organ-transplantation
#10
REVIEW
N K Mehra, A K Baranwal
The two important issues affecting recipients of solid organ transplants and of importance to immunologists are (i) sensitization of the recipient to HLA antigens and the resultant humoral immune response leading to the development of anti-HLA antibodies; and ii) development of robust assays for early detection of humoral rejection post-transplant. Evidence from several studies clearly indicates that presence of circulating anti-HLA antibodies especially donor specific leads to early graft loss and high titres of DSA may even lead to hyperacute or accelerated acute rejection...
December 2016: International Journal of Immunogenetics
https://www.readbyqxmd.com/read/27869439/immunology-update-long-term-care-of-solid-organ-transplant-recipients
#11
S Paul Starr
Nearly 31,000 US patients received solid organ transplants in 2015 and the number is increasing. Care of transplant recipients includes management of a variety of common posttransplantation issues. Skin cancers are common because of immunosuppression and require skin examinations at intervals. Patients should be educated about the need to report new skin lesions. The rates of other cancers also are increased, including cancers of the head and neck, lung, esophagus, cervix, and urinary tract. Osteoporosis is common in transplant recipients; monitoring and early therapy are important...
November 2016: FP Essentials
https://www.readbyqxmd.com/read/27864154/root-cause-analysis-of-limitations-of-virtual-crossmatch-for-kidney-allocation-to-highly-sensitized-patients
#12
Vivek Jani, Elizabeth Ingulli, Kristen Mekeel, Gerald P Morris
Efficient allocation of deceased donor organs depends upon effective prediction of immunologic compatibility based on donor HLA genotype and recipient alloantibody profile, referred to as virtual crossmatching (VCXM). VCXM has demonstrated utility in predicting compatibility, though there is reduced efficacy for patients highly sensitized against allogeneic HLA antigens. The recently revised deceased donor kidney allocation system (KAS) has increased transplantation for this group, but with an increased burden for histocompatibility testing and organ sharing...
November 15, 2016: Human Immunology
https://www.readbyqxmd.com/read/27862923/reduction-of-extended-release-tacrolimus-dose-in-low-immunological-risk-kidney-transplant-recipients-increases-risk-of-rejection-and-appearance-of-dsa-a-randomized-study
#13
Philippe Gatault, Nassim Kamar, Matthias Büchler, Charlotte Colosio, Dominique Bertrand, Antoine Durrbach, Laeticia Albano, Joseph Rivalan, Yannick Le Meur, Marie Essig, Nicolas Bouvier, Christophe Legendre, Bruno Moulin, Anne-Elisabeth Heng, Pierre-François Weestel, Johnny Sayegh, Bernard Charpentier, Lionel Rostaing, Eric Thervet, Yvon Lebranchu
The aim of this study (NCT01744470) was to determine the efficacy and safety of two different doses of extended-release tacrolimus (TacER) in kidney transplant recipients (KTR) between 4 and 12 months post-transplantation. Stable steroid-free KTR were randomized (1:1) after 4 months: Group A 50%-reduction in TacER dose with targeted TacERC0>3μg/L; Group B no change in TacER dose (TacERC0=7-12μg/L). The primary outcome was eGFR at 1 year. Of 300 patients, intent-to-treat analysis included 186 patients (Group A 87, Group B 99)...
November 9, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27862900/long-term-renal-allograft-survival-after-sequential-liver-kidney-transplantation-from-a-single-living-donor
#14
Kumiko Kitajima, Yuichi Ogawa, Katsuyuki Miki, Kotaro Kai, Akihito Sannomiya, Kazuhiro Iwadoh, Toru Murakami, Ichiro Koyama, Ichiro Nakajima, Shohei Fuchinoue
Background Combined liver-kidney transplantation (CLKT) is well-established as a definitive therapy with the potential to provide complete recovery for certain liver-kidney diseases, although the results might be contingent on the cause of transplantation. The purposes of the present study were to review the long-term outcome of renal allografts in CLKT patients from single living donors and to investigate the beneficial factors, compared with solitary renal transplantation. Materials and Methods Thirteen patients underwent sequential liver (LTx) and kidney (KTx) transplantations from single living donors...
November 10, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/27860413/development-of-a-wearable-bioartificial-kidney-using-the-bioartificial-renal-epithelial-cell-system-brecs
#15
Kimberly A Johnston, Angela J Westover, Alvaro Rojas-Pena, Deborah A Buffington, Christopher J Pino, Peter L Smith, H David Humes
Cell therapy for the treatment of renal failure in the acute setting has proved successful, with therapeutic impact, yet development of a sustainable, portable bioartificial kidney for treatment of chronic renal failure has yet to be realized. Challenges in maintaining an anticoagulated blood circuit, the typical platform for solute clearance and support of the biological components, have posed a major hurdle in advancement of this technology. This group has developed a Bioartificial Renal Epithelial Cell System (BRECS) capable of differentiated renal cell function while sustained by body fluids other than blood...
November 18, 2016: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/27855166/a-comparison-of-two-types-of-rabbit-antithymocyte-globulin-induction-therapy-in-immunological-high-risk-kidney-recipients-a-prospective-randomized-control-study
#16
F Burkhalter, S Schaub, Ch Bucher, L Gürke, A Bachmann, H Hopfer, M Dickenmann, J Steiger, I Binet
BACKGROUND: Induction treatment with rabbit polyclonal antithymocyte globulins (ATGs) is frequent used in kidney transplant recipients with donorspecific HLA antibodies and shows acceptable outcomes. The two commonly used ATGs, Thymoglobulin and ATG-F have slightly different antigen profile and antibody concentrations. The two compounds have never been directly compared in a prospective trial in immunological high-risk recipients. Therefore we performed a prospective randomized controlled study comparing the two compounds in immunological high-risk kidney recipients in terms of safety and efficacy...
2016: PloS One
https://www.readbyqxmd.com/read/27845171/the-new-kas-it-takes-a-village
#17
EDITORIAL
Howard M Gebel, Malek Kamoun
No abstract text is available yet for this article.
November 11, 2016: Human Immunology
https://www.readbyqxmd.com/read/27836384/sensitization-assessment-before-kidney-transplantation
#18
REVIEW
Ben C Reynolds, Kathryn J Tinckam
Kidney transplantation is the treatment of choice for patients with end stage renal disease to optimize survival, freedom from morbidity and quality of life. A fundamental aspect of the pre-transplant assessment is a thorough understanding of their immunological history and prior exposures, so that the immunological risk from a given donor can be estimated, if not quantified, in order to guide interventions to optimize transplant access and success. The methodologies available to complete this assessment have evolved rapidly, with flow cytometric based analyses now standard in many laboratories, availability of comprehensive molecular methods for HLA typing of both donors and recipients, and an increasing recognition of the vital dialogue that must occur between the HLA laboratory and transplant clinicians...
October 8, 2016: Transplantation Reviews
https://www.readbyqxmd.com/read/27832170/carotid-catheterization-and-automated-blood-sampling-induce-systemic-il-6-secretion-and-local-tissue-damage-and-inflammation-in-the-heart-kidneys-liver-and-salivary-glands-in-nmri-mice
#19
Anne Charlotte Teilmann, Björn Rozell, Otto Kalliokoski, Jann Hau, Klas S P Abelson
Automated blood sampling through a vascular catheter is a frequently utilized technique in laboratory mice. The potential immunological and physiological implications associated with this technique have, however, not been investigated in detail. The present study compared plasma levels of the cytokines IL-1β, IL-2, IL-6, IL-10, IL-17A, GM-CSF, IFN-γ and TNF-α in male NMRI mice that had been subjected to carotid artery catheterization and subsequent automated blood sampling with age-matched control mice. Body weight and histopathological changes in the surgical area, including the salivary glands, the heart, brain, spleen, liver, kidneys and lungs were compared...
2016: PloS One
https://www.readbyqxmd.com/read/27823818/progress-in-transplantation-will-it-be-achieved-in-big-steps-or-by-marginal-gains
#20
Jeremy R Chapman
A wish for progress in transplantation assumes that there are needs not met by the currently available therapy and that the barriers to resolving the problems can be surmounted. There are 5 major unmet needs: the potential to avoid transplantation either by prevention of disease or provision of an alternative to natural biological organ replacement; geographic heterogeneity of access to, and quality of, transplantation; availability of transplantation to those in need of it; survival of the patient and the transplant; and the avoidance of adverse effects of immunosuppression...
November 4, 2016: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
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