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https://www.readbyqxmd.com/read/28107277/suppressive-effect-of-1%C3%AE-25-dihydroxyvitamin-d3-on-th17-immune-responses-in-kidney-transplant-recipients-with-tacrolimus-based-immunosuppression
#1
Byung Ha Chung, Bo-Mi Kim, Kyoung Chan Doh, Ji-Won Min, Mi-La Cho, Kyoung Woon Kim, Chul Woo Yang
BACKGROUND: The aim of this study was to investigate whether 1α,25-dihydroxyvitamin D3 can regulate Th17-related-immune responses in kidney transplant recipients (KTRs) being treated with tacrolimus (Tac)-based immunosuppression. METHODS: First, we evaluated the effect of 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3) on Th17-immune responses in an in vitro study using peripheral blood mononuclear cells (PBMCs) from healthy volunteers or KTRs. Next, we investigated mTOR/STAT3 signaling as a mechanism by which 1,25(OH)2D3 exerted its effect on T cells using the Jurkat cell line...
October 6, 2016: Transplantation
https://www.readbyqxmd.com/read/28105368/clinical-and-immunologic-correlates-of-response-to-pd-1-blockade-in-a-patient-with-metastatic-renal-medullary-carcinoma
#2
Kathryn E Beckermann, Pradeep C Jolly, Ju Y Kim, Jennifer Bordeaux, Igor Puzanov, W Kimryn Rathmell, Douglas B Johnson
BACKGROUND: Renal medullary carcinoma (RMC) is a rare kidney tumor that occurs in adolescent and young adults, typically in association with sickle cell trait. RMC exhibits rapid disease progression, frequent metastases at diagnosis, and dismal clinical outcomes. Currently available therapies, including cisplatin-based combination chemotherapy, multi-tyrosine kinase, and mTOR inhibitor strategies demonstrate either transient responses or minimal activity. Therefore, further molecular characterization and additional treatment strategies are urgently needed in this aggressive disease...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28067566/basic-concepts-in-kidney-transplant-immunology
#3
Roberta Callus, Jesmar Buttigieg, Andrei Agius Anastasi, Ahmed Halawa
Advances in the field of immunohistocompatibility and immunogenetics have been crucial for improvements in kidney transplant outcomes. This review provides a practical outline of these important breakthroughs for the general physician, at a time when demand for kidney transplants is increasing.
January 2, 2017: British Journal of Hospital Medicine
https://www.readbyqxmd.com/read/28060025/antibody-mediated-rejection-what-is-the-clinical-relevance
#4
Rachel Hogen, Joseph DiNorcia, Kiran Dhanireddy
PURPOSE OF REVIEW: The review outlines the diagnosis, clinical implications, and treatment strategies for acute and chronic antibody-mediated rejection (AMR) after orthotopic liver transplantation (OLT). RECENT FINDINGS: A combination of clinical work-up, histopathology, C4d staining, and donor-specific antibody (DSA) should be used to diagnose AMR. The differential diagnosis for idiopathic fibrosis now includes chronic AMR. Characterization of pathogenic DSA continues to progress...
January 3, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/28056461/predicting-post-transplant-recurrence-of-iga-nephropathy-the-importance-of-crescents
#5
Rupali S Avasare, Paul E Rosenstiel, Ziad S Zaky, Demetra S Tsapepas, Gerald B Appel, Glen S Markowitz, Andrew S Bomback, Pietro A Canetta
BACKGROUND: Most studies that have assessed the predictors of recurrent IgA nephropathy (IgAN) in the renal allograft have focused on post-transplant features. Identifying high-risk pre-transplant features of IgAN is useful for counseling patients and may help in tailoring post-transplant immunosuppression. METHODS: We investigated the pre-transplant clinical and biopsy features of 62 patients with IgAN who received transplants at Columbia University Medical Center from 2001 to 2012 and compared the characteristics and outcomes of patients with IgAN recurrence to those without recurrence...
January 6, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28024933/a-preoperative-multimarker-approach-to-evaluate-acute-kidney-injury-after-cardiac-surgery
#6
Tone B Enger, Hilde Pleym, Roar Stenseth, Guri Greiff, Alexander Wahba, Vibeke Videm
OBJECTIVE: To investigate whether a multimarker strategy combining preoperative biomarkers representing distinct pathophysiologic pathways enhances preoperative risk assessment of acute kidney injury after cardiac surgery (CSA-AKI) and increases knowledge of underlying pathogenesis. DESIGN: Prospective, cohort study. SETTING: Single-center tertiary referral hospital. PARTICIPANTS: The study comprised 1,015 adults undergoing cardiac surgery with cardiopulmonary bypass...
October 11, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27998802/janus-kinase-inhibition-for-immunosuppression-in-solid-organ-transplantation-is-there-a-role-in-complex-immunologic-challenges
#7
REVIEW
Cody A Moore, Carlo J Iasella, Raman Venkataramanan, Fadi G Lakkis, Randall B Smith, John F McDyer, Adriana Zeevi, Christopher R Ensor
Inhibition of the Janus kinase-signal transducer and activator of transcription (JAK-STAT) pathway for immunosuppression in solid organ transplantation is appealing due to its specificity for immune cell function, particularly for JAK3. This is due to its unique association with only the common gamma chain (γc). The γc is an appealing immunosuppression target in transplantation because of the critically important lymphokines that act at it, including IL-2, IL-4, IL-7, IL-9, IL-15, and IL-21. Tofacitinib was initially purported to selectively inhibit solely JAK3, but subsequent analyses have also demonstrated its activity at the other members of the JAK family...
December 18, 2016: Human Immunology
https://www.readbyqxmd.com/read/27997897/plasma-gelsolin-promotes-proliferation-of-mesangial-cell-in-iga-nephropathy
#8
Lei Zhang, Dan Kong, Hongxue Meng, Changsong Han, Jiang Zhu, Juanjuan Qiao, Yan He, Tianzhen Wang, Xiaobo Li, Fengmin Zhang, Xiaoming Jin
BACKGROUND/AIMS: Plasma gelsolin (pGSN) is an actin-binding protein that plays a critical role in the pathogenesis of rheumatoid arthritis. However, whether pGSN is involved in other immunological diseases remains unknown. This study focused on the relationship between pGSN and immunoglobulin A (IgA) nephropathy (IgAN). METHODS: Two hundred patients with IgAN, 200 patients each with several other types of nephropathy and healthy controls (HCs) who underwent kidney biopsies between 2000 and 2014 were enrolled in the study...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27996207/complete-regression-of-psoriatic-arthritis-after-belatacept-conversion-in-a-highly-hla-sensitized-kidney-transplant-patient
#9
Maria Meneghini, Carmen Gómez, Richard Mast, Edoardo Melilli, Josep M Grinyó, Oriol Bestard
Costimulatory inhibitors (Abatacept and Belatacept) effectively abrogate T-lymphocyte activation and proliferation and have been shown to be effective for disease control in certain autoimmune disorders as well as in preventing allograft rejection in kidney transplantation. Whether such immunomodulatory agents may be useful for the control of autoimmune flares and allograft acceptance, while avoiding the need of additional strong immunosuppressants has not been shown yet. Herein, we report the first case of a 47-year old man affected by a serious debilitating form of Psoriatic Arthritis presented during the course of a third, high immunological risk kidney transplantation...
December 20, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27992110/kidney-exchange-to-overcome-financial-barriers-to-kidney-transplantation
#10
M A Rees, T B Dunn, C S Kuhr, C L Marsh, J Rogers, S E Rees, A Cicero, L J Reece, A E Roth, O Ekwenna, D E Fumo, K D Krawiec, J E Kopke, S Jain, M Tan, S R Paloyo
Organ shortage is the major limitation to kidney transplantation in the developed world. Conversely, millions of patients in the developing world with end-stage renal disease die because they cannot afford renal replacement therapy-even when willing living kidney donors exist. This juxtaposition between countries with funds but no available kidneys and those with available kidneys but no funds prompts us to propose an exchange program using each nation's unique assets. Our proposal leverages the cost savings achieved through earlier transplantation over dialysis to fund the cost of kidney exchange between developed-world patient-donor pairs with immunological barriers and developing-world patient-donor pairs with financial barriers...
November 7, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27990485/the-association-between-broad-antigen-hla-mismatches-eplet-hla-mismatches-and-acute-rejection-after-kidney-transplantation
#11
Hung Thanh Do Nguyen, Germaine Wong, Jeremy R Chapman, Stephen P McDonald, Patrick T Coates, Narelle Watson, Graeme R Russ, Lloyd D'Orsogna, Wai Hon Lim
BACKGROUND: Epitope matching, which evaluates mismatched amino acids within antigen-antibody interaction sites (eplets), may better predict acute rejection than broad antigen matching alone. We aimed to determine the association between eplet mismatches and acute rejection in kidney transplant recipients. METHODS: The association between eplet mismatches, broad antigen mismatches and acute rejection was assessed using adjusted Cox proportional hazard regression...
December 2016: Transplantation Direct
https://www.readbyqxmd.com/read/27988992/outcomes-in-the-highest-panel-reactive-antibody-recipients-of-deceased-donor-kidneys-under-the-new-kidney-allocation-system
#12
Sandesh Parajuli, Robert R Redfield, Brad C Astor, Arjang Djamali, Dixon Kaufman, Didier A Mandelbrot
Since the institution of the new kidney allocation system in December 2014, kidney transplant candidates with the highest calculated panel reactive antibodies (cPRA) of 99-100 have been transplanted at much higher rates. However, concerns have been raised that outcomes in these patients might be impaired due to higher immunological risk and longer cold ischemia times resulting from long-distance sharing of kidneys. Here we compare outcomes at the University of Wisconsin between study patients with cPRA 99-100 and all other recipients of deceased donor kidneys transplanted between 12/04/2014 and12/31/2015...
December 17, 2016: Clinical Transplantation
https://www.readbyqxmd.com/read/27988062/review-eicosanoids-in-preterm-labor-and-delivery-potential-roles-of-exosomes-in-eicosanoid-functions
#13
REVIEW
H N Peiris, K Vaswani, F Almughlliq, Y Q Koh, M D Mitchell
Preterm delivery is a major obstetric health problem contributing to poor neonatal outcome including low birth weight, respiratory distress syndrome, gastrointestinal, immunologic, central nervous system, hearing, and vision problems. Worldwide, approximately 15 million babies are born prematurely each year. The critical question which remains is how to identify women destined to deliver preterm from those who will achieve a term delivery. Prostaglandins, in all mammals are important in the parturient process...
December 9, 2016: Placenta
https://www.readbyqxmd.com/read/27984174/emergency-tips-in-a-child-pugh-b-patient-when-does-the-window-of-opportunity-open-and-close
#14
REVIEW
Jonel Trebicka
Transjugular intrahepatic portosystemic shunt (TIPS) is used to treat complications of cirrhosis such as variceal bleeding and refractory ascites, but it also bears the risk of liver failure, overt hepatic encephalopathy (HE) and cardiac decompensation. Variceal bleeding may be controlled using endoscopic and medical treatment in patients with compensated cirrhosis; in decompensated patients, however, TIPS improves survival. Therefore, an early TIPS (within 72h or if later, still early after bleeding) might improve the survival of patients by preventing an inflammatory response and bacterial translocation...
October 29, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/27979979/a-comparative-effectiveness-analysis-of-early-steroid-withdrawal-in-black-kidney-transplant-recipients
#15
David J Taber, Kelly J Hunt, Mulugeta Gebregziabher, Titte Srinivas, Kenneth D Chavin, Prabhakar K Baliga, Leonard E Egede
BACKGROUND AND OBJECTIVES: There is continued debate whether early steroid withdrawal is safe to use in high-immunologic risk patients, such as blacks. The goal of this study was to use comparative effectiveness methodology to elucidate the safety of early steroid withdrawal in blacks with kidney transplants. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Our cohort study used United Network of Organ Sharing data including all adult black kidney transplant recipients from 2000 to 2009 followed through 2014...
January 6, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/27965714/doppler-ultrasound-in-kidney-diseases-a-key-parameter-in-clinical-long-term-follow-up
#16
REVIEW
Leonardo Spatola, Simeone Andrulli
Doppler ultrasound has been extensively used in detecting reno-vascular diseases, showing to be a non-invasive, safe, low cost and repeatable tool. The Renal Resistive Index (RRI) [(peak systolic velocity - end diastolic velocity)/peak systolic velocity] is a semi-quantitative index derived by Doppler evaluation of renal vascular bed. Normally RRI is in the range of 0.47-0.70, it increases with aging and, usually, it shows a difference between the two kidneys less than 5-8 %. RRI is an important prognostic marker in chronic kidney diseases (CKD), both in diabetic and non-diabetic kidney diseases, because, in longitudinal prospective studies, it significantly correlated with hemodynamic (ABPM, SBP, DBP, pulse pressure) and histopathological parameters (glomerular sclerosis, arteriolosclerosis, interstitial fibrosis/tubular atrophy, interstitial infiltration)...
December 2016: Journal of Ultrasound
https://www.readbyqxmd.com/read/27940366/identification-and-functional-analysis-of-dual-specificity-map-kinase-phosphatase-6-gene-dusp6-in-response-to-immune-challenges-in-japanese-flounder-paralichthys-olivaceus
#17
Shuo Li, Weijiao Peng, Gaixiang Hao, Jiafang Li, Xuyun Geng, Jinsheng Sun
Dual-specificity phosphatase 6 (Dusp6) is a member of mitogen-activated protein kinase (MAPK) phosphatases that play crucial roles in regulating MAPK signaling and immune response. The immunological relevance of Dusp6 in fish, however, remains largely uncharacterized. In the present study, a full-length Japanese flounder dusp6 cDNA ortholog, termed PoDusp6, was identified and characterized from Paralichthys olivaceus. The deduced PoDusp6 protein is comprised of 383 amino acids with a conserved N-terminal regulatory rhodanese homology domain and a C-terminal catalytic domain...
December 8, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27932151/kidney-transplantation-with-ultralong-term-42-years-survival-of-a-100-year-old-graft
#18
E Nascimento, F M Lucas-Junior, R A Fabreti-Oliveira, B Vilela, E R F Tavora, J P L Silva, A Salomão-Filho
BACKGROUND: In kidney transplantation, long-term graft survival has improved over the last few decades. Study to understand ultralong-term graft survival with graft functioning is rare, but a few researchers have tried to explain the factors involved in long-term graft survival. In this report, we explore the predictive factors that can be involved in ultralong-term graft survival. MATERIAL AND METHODS: Immunologic evaluations of the patients were performed using crossmatch (XM), serological, and high-resolution HLA typing for 8 loci...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27926546/the-effect-of-chronic-kidney-disease-on-t-cell-alloimmunity
#19
Pamela D Winterberg, Mandy L Ford
PURPOSE OF REVIEW: Altered differentiation and activation of T-cell subsets occur in patients with chronic kidney disease (CKD), but the impact on graft rejection and protective immunity during transplantation are not fully understood. RECENT FINDINGS: Patients with CKD have decreased frequency of naïve T cells, accumulation of activated, terminally differentiated memory cells, and skewed regulatory versus T helper 17 ratio. Naïve and memory T-cell subsets do not appear to improve following kidney transplantation...
February 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/27926518/higher-programmed-cell-death-1-ligand-1-pd-l1-mrna-level-in-clear-cell-renal-cell-carcinomas-is-associated-with-a-favorable-outcome-due-to-the-active-immune-responses-in-tumor-tissues
#20
Xiang-Hui Ning, Yan-Qing Gong, Shi-Ming He, Teng Li, Jiang-Yi Wang, Shuang-He Peng, Jin-Chao Chen, Jia-Yuan Liu, Nie-Nie Qi, Ying-Lu Guo, Kan Gong
Renal cell carcinoma is one of the most common urological tumors. The role of programmed cell death 1 ligand 1 (PD-L1) in renal cell carcinomas in predicting outcome of the patients is yet unclear. We analyzed the clinical and RNA-seq data of 522 kidney clear cell cancer, 259 kidney papillary cell carcinoma and 66 kidney chromophobe patients from The Cancer Genome Atlas (TCGA) database. In kidney clear cell cancer patients with high PD-L1 mRNA level and low PD-L1 mRNA level in tumors, the median overall survival periods were 45...
December 1, 2016: Oncotarget
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