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https://www.readbyqxmd.com/read/28640481/using-analytic-morphomics-to-describe-body-composition-associated-with-post-kidney-transplantation-diabetes-mellitus
#1
David C Cron, Kelly A Noon, Devan R Cote, Michael N Terjimanian, Joshua J Augustine, Stewart C Wang, Michael J Englesbe, Kenneth J Woodside
BACKGROUND: Better risk assessment tools are needed to predict post-transplantation diabetes mellitus (PTDM). Using analytic morphomic measurements from computed tomography (CT) scans, we aimed to identify specific measures of body composition associated with PTDM. METHODS: We retrospectively reviewed 99 non-diabetic kidney transplant recipients who received pre-transplant CT scans at a single institution between 1/2005 and 5/2014. Analytic morphomic techniques were used to measure abdominal adiposity, abdominal size, and psoas muscle area and density, standardized by gender...
June 22, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28533501/post-transplant-diabetes-mellitus-after-kidney-transplant-in-hispanics-and-caucasians-treated-with-tacrolimus-based-immunosuppression
#2
Pedro W Baron, Sergio Infante, Regina Peters, Jerusalem Tilahun, Jill Weissman, Lauren Delgado, Arputharaj Higgins Kore, W Lawrence Beeson, Michael E de Vera
BACKGROUND Development of post-transplant diabetes mellitus after kidney transplant (PTDM) significantly increases kidney graft loss and mortality. Several risk factors for PTDM have been reported, including Hispanic ethnicity and the use of calcineurin inhibitors and corticosteroids. The incidence and impact of PTDM in the Hispanic kidney transplant population is unknown. MATERIAL AND METHODS We retrospectively reviewed the medical records of 155 Hispanic and 124 Caucasian patients, who were not diabetics and underwent kidney transplant between January 2006 and December 2011...
May 23, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/28435278/genetic-factors-in-pathogenesis-of-diabetes-mellitus-after-kidney-transplantation
#3
REVIEW
Maciej Tarnowski, Sylwia Słuczanowska-Głabowska, Andrzej Pawlik, Małgorzata Mazurek-Mochol, Elżbieta Dembowska
Posttransplant diabetes mellitus (PTDM) is one of the major metabolic complications after transplantation of solid organs including the kidney. This type of diabetes mellitus affects allograft survival, cardiovascular complications and overall patient survival. The modifiable risk factors that contribute to PTDM include obesity, some viral infections (eg, hepatitis C virus, cytomegalovirus) and especially immunosuppressive drugs including corticosteroids, tacrolimus, cyclosporine and sirolimus. Currently, predisposing genetic factors have been considered important in PTDM development...
2017: Therapeutics and Clinical Risk Management
https://www.readbyqxmd.com/read/28432716/deciphering-tacrolimus-induced-toxicity-in-pancreatic-%C3%AE-cells
#4
J Triñanes, A E Rodriguez-Rodriguez, Y Brito-Casillas, A Wagner, A P J De Vries, G Cuesto, A Acebes, E Salido, A Torres, E Porrini
β-cell transcription factors like: FoxO1, MafA, PDX-1, NeuroD, are dysfunctional in type 2 diabetes (T2DM). PTDM resembles T2DM and reflects interaction between pre-transplant insulin resistance and immunosuppressants, mainly calcineurin inhibitors. We evaluated the effect of tacrolimus, cyclosporine-A and metabolic stressors (glucose+palmitate) on insulinoma β-cells (INS-1) in vitro and in pancreata of obese and lean Zucker rats. Cells were cultured for five days with 100μM palmitate and 22mM glucose; cyclosporin-A (250ng/mL) or tacrolimus (15ng/mL) were added the last 48h...
April 22, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28423197/diabetic-kidney-transplant-recipients-impaired-infection-control-and-increased-alloreactivity
#5
Thomas Schachtner, Maik Stein, Petra Reinke
BACKGROUND: Post-transplantation diabetes mellitus (PTDM) has been associated with inferior patient and allograft outcomes. However, previous studies did not identify differences in infection control and alloreactivity. METHODS: We studied 449 kidney transplant recipients (KTRs) between 2005 and 2013. Fifty (11.1%) KTRs were diagnosed with PTDM and 60 (13.4%) KTRs with pre-existing diabetes. Samples were collected pretransplantation, at +1, +2, +3 months post-transplantation...
April 19, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28349930/pharmacogenetics-of-posttransplant-diabetes-mellitus
#6
REVIEW
P Lancia, T Adam de Beaumais, E Jacqz-Aigrain
Many factors (physiological, pathological, environmental or genetic) are associated with variability in drug effect. Most patients respond to a standard treatment but the drug may be ineffective or toxic. In this review, we focused on genetic markers of posttransplant diabetes mellitus (PTDM) after renal transplantation, a frequent complication of immunosuppressive therapy and important risk factor of graft loss and mortality. An initial literature search identified 100 publications and among them 32 association studies were retrieved under 'Pharmacogenetics and PTDM'...
June 2017: Pharmacogenomics Journal
https://www.readbyqxmd.com/read/28088775/diagnostic-accuracy-of-glycated-hemoglobin-for-post-transplantation-diabetes-mellitus-after-kidney-transplantation-systematic-review-and-meta-analysis
#7
Ana Laura Pimentel, Gabriela Cavagnolli, Joíza Lins Camargo
Background.: Early detection of post-transplantation diabetes mellitus (PTDM) allows prompt clinical and pharmacological interventions, reducing the chance of adverse outcomes. We conducted a systematic review and meta-analysis to determine the overall diagnostic accuracy of glycated hemoglobin (HbA1c) for the diagnosis of renal PTDM. Methods.: We searched MEDLINE, Embase and SCOPUS up to June 2016. Studies that included adults without previous diabetes were selected if they reported an oral glucose tolerance test as a reference test, HbA1c levels measured by standardized methods and data necessary for drawing 2 × 2 tables...
March 1, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28081294/xenogeneic-bio-root-prompts-the-constructive-process-characterized-by-macrophage-phenotype-polarization-in-rodents-and-nonhuman-primates
#8
Hui Li, Jingjing Sun, Jie Li, Hefeng Yang, Xiangyou Luo, Jinlong Chen, Li Xie, Fangjun Huo, Tian Zhu, Weihua Guo, Weidong Tian
Tissue or organ regeneration using xenogeneic matrices is a promising approach to address the shortage of donor matrices for allotransplantation. Success of such approach has been demonstrated to correlate with macrophage-mediated fibrotic homeostasis and tissue remodeling. The previous studies have demonstrated that treated dentin matrix (TDM) could be a suitable bioactive substrate for allogeneic tooth root regeneration. This study constructed xenogeneic bioengineered tooth root (bio-root) via a combination of porcine TDM (pTDM) with allogeneic dental follicle cells (DFCs)...
January 12, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28013014/metabolic-complications-precede-alloreactivity-and-are-characterized-by-changes-in-suppression-of-tumorigenicity-2-signaling
#9
Romany A N Johnpulle, Sophie Paczesny, Dae Kwang Jung, Etienne Daguindau, Madan H Jagasia, Bipin N Savani, Wichai Chinratanalab, Robert F Cornell, Stacey Goodman, John P Greer, Adetola A Kassim, Salyka Sengsayadeth, Michael T Byrne, Brian G Engelhardt
New-onset post-transplantation diabetes mellitus (PTDM) occurs commonly after allogeneic hematopoietic cell transplantation (HCT) and is associated with inferior survival. We hypothesize that PTDM and nonrelapse mortality (NRM) are related to IL-33/suppression of tumorigenicity 2 (ST2) signaling and that soluble ST2 (sST2) levels will predict PTDM diagnosis. sST2 was measured at engraftment and day +30 in 36 euglycemic HCT recipients followed prospectively for PTDM (cohort 1). Results were confirmed in a validation cohort of 26 patients without pre-existing diabetes analyzed retrospectively for PTDM (cohort 2)...
March 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/27931571/incidence-of-diabetes-mellitus-after-kidney-transplantation-in-slovakia-multicentric-prospective-analysis
#10
L Dedinská, T Baltesová, Ĺ Beňa, M Čellár, P Galajda, M Chrastina, A Jurčina, L Kováčiková, L Laca, E Lacková, S Lauková Valachová, J Miklušica, J Rosenberger, M Sersenová, P Skalová, Z Žilinská, M Mokáň
BACKGROUND: The incidence rate of post-transplant diabetes mellitus (PTDM) after kidney transplantation (KT) is 5% to 40%. The objective of this analysis was to identify the risk factors of PTDM after KT in the Slovak Republic (SR). METHODS: In the group of 133 patients/non-diabetics, we identified the risk factors of PTDM in the monitored period of 12 months from transplantation. RESULTS: The incidence of PTDM in the SR in 2014 was 38.3%...
December 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27761671/preemptive-kidney-transplantation-a-propensity-score-matched-cohort-study
#11
Masayoshi Okumi, Yasuyuki Sato, Kohei Unagami, Toshihito Hirai, Hideki Ishida, Kazunari Tanabe
BACKGROUND: The reasons for improved outcomes associated with preemptive kidney transplantation (PKT) are incompletely understood, and post-transplant complications have been scarcely investigated. METHODS: We evaluated the outcomes of PKT in both unmatched (n = 1060) and propensity score matched cohorts (n = 186) of adults who underwent living kidney transplant between 2000 and 2014. Outcomes were estimated glomerular filtration rate (eGFR), biopsy-proven rejection, cytomegalovirus (CMV) infection, post-transplant diabetes mellitus (PTDM), cardiovascular disease (CVD), graft failure (non-censored for death), and malignancy...
October 19, 2016: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/27706207/adiponectin-fractions-influence-the-development-of-posttransplant-diabetes-mellitus-and-cardiovascular-disease-in-japanese-renal-transplant-recipients
#12
Hiroki Adachi, Kanae Nakayama, Norifumi Hayashi, Yuki Matsui, Keiji Fujimoto, Hideki Yamaya, Hisao Tonami, Hitoshi Yokoyama
BACKGROUND: A few studies have investigated the role of adiponectin fraction for cardiovascular disease (CVD) in RTx recipients. SUBJECTS AND METHODS: We studied 57 adult subjects (39 males, 18 females; 10 cadaveric donors) with at least three years of allograft survival (median 251 months). We examined clinical backgrounds such as treated drugs, blood pressure (BP, mmHg), body mass index (BMI), and blood chemistry including cholesterol (total, LDL-C, HDL-C), glucose, glycated hemoglobin (HbA1c), and serum high and low-molecular-weight (HMW/LMW) ADPN fractions with regard to the associations of the visceral and subcutaneous fat areas on CT scan...
2016: PloS One
https://www.readbyqxmd.com/read/27648010/association-of-inflammation-prior-to-kidney-transplantation-with-post-transplant-diabetes-mellitus
#13
Maria P Martinez Cantarin, Scott W Keith, Zhao Lin, Cataldo Doria, Adam M Frank, Warren R Maley, Carlo Ramirez, Costas D Lallas, Ashesh Shah, Scott A Waldman, Bonita Falkner
BACKGROUND/OBJECTIVE: Post-transplant diabetes mellitus (PTDM) is both common and associated with poor outcomes after kidney transplantation. Our objective was to examine relationships of uremia-associated inflammation and adiponectin with PTDM. METHODS: Nondiabetic kidney transplant patients were enrolled with donor controls. Inflammatory cytokines and adiponectin were measured before and after transplantation. Adipose tissue was obtained for gene expression analysis...
August 2016: Cardiorenal Medicine
https://www.readbyqxmd.com/read/27642745/-posttransplantation-diabetes-mellitus-in-patients-after-kidney-transplantation-incidence-and-risk-factors
#14
Isabell Jahn, Martin Busch, Undine Ott, Gunter Wolf, Wilgard Battefeld
BACKGROUND: Transplantation (NTX) associated ischemia-reperfusion-mechanisms and the predisposition for insulin resistance are discussed as causes of a posttransplantation diabetes mellitus (PTDM). Furthermore, immunosuppressants can have a damaging effect on insulin secretion. METHODS: 55 metabolically healthy patients with an endstage renal disease (age 52 ± 14 years, body mass index 27 ± 5 kg / m(2), blood pressure 137 ± 15/82 ± 11 mmHg) were included in a prospectively cohort study...
September 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27633441/intracellular-delivery-of-anti-ppkc%C3%AE-thr538-via-protein-transduction-domain-mimics-for-immunomodulation
#15
E Ilker Ozay, Gabriela Gonzalez-Perez, Joe A Torres, Jyothi Vijayaraghavan, Rebecca Lawlor, Heather L Sherman, Daniel T Garrigan, Amy S Burnside, Barbara A Osborne, Gregory N Tew, Lisa M Minter
Targeting cellular proteins with antibodies, to better understand cellular signaling pathways in the context of disease modulation, is a fast-growing area of investigation. Humanized antibodies are increasingly gaining attention for their therapeutic potential, but the collection of cellular targets is limited to those secreted from cells or expressed on the cell surface. This approach leaves a wealth of intracellular proteins unexplored as putative targets for antibody binding. Protein kinase Cθ (PKCθ) is essential to T cell activation, proliferation, and differentiation, and its phosphorylation at specific residues is required for its activity...
December 2016: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/27621191/risk-assessment-and-management-of-post-transplant-diabetes-mellitus
#16
REVIEW
Eugene Han, Myoung Soo Kim, Yu Seun Kim, Eun Seok Kang
The success rate of organ transplantation has been increasing with advances in surgical and pharmacological techniques. However, the number of solid organ transplant recipients who require metabolic disease management is also growing. Post-transplant diabetes mellitus (PTDM) is a common complication after solid organ transplantation and is associated with risks of graft loss, cardiovascular morbidity, and mortality. Other risk factors for PTDM include older age, genetic background, obesity, hepatitis C virus infection, hypomagnesemia, and use of immunosuppressant agents (corticosteroids, calcineurin inhibitors, and mammalian target of rapamycin inhibitor)...
October 2016: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/27599388/mapping-optimal-charge-density-and-length-of-romp-based-ptdms-for-sirna-internalization
#17
Leah M Caffrey, Brittany M deRonde, Lisa M Minter, Gregory N Tew
A fundamental understanding of how polymer structure impacts internalization and delivery of biologically relevant cargoes, particularly small interfering ribonucleic acid (siRNA), is of critical importance to the successful design of improved delivery reagents. Herein we report the use of ring-opening metathesis polymerization (ROMP) methods to synthesize two series of guanidinium-rich protein transduction domain mimics (PTDMs): one based on an imide scaffold that contains one guanidinium moiety per repeat unit, and another based on a diester scaffold that contains two guanidinium moieties per repeat unit...
October 10, 2016: Biomacromolecules
https://www.readbyqxmd.com/read/27486667/significant-association-between-toll-like-receptor-gene-polymorphisms-and-posttransplantation-diabetes-mellitus
#18
Jin Sug Kim, Seul Ki Kim, Ji Yoon Park, Yang Gyun Kim, Joo Young Moon, Sang Ho Lee, Chun Gyoo Ihm, Tae Won Lee, Su Kang Kim, Joo-Ho Chung, Sun Woo Kang, Tae Hee Kim, Yeong Hoon Kim, Kyung Hwan Jeong
BACKGROUND: Posttransplantation diabetes mellitus (PTDM) is an important metabolic complication after renal transplantation. Activation of the innate immune system via toll-like receptors (TLRs) is implicated in the pathogenesis of insulin resistance and deficiency. Although links between diabetes, dysregulated innate immune responses, and the TLR signaling pathway have been reported, no study so far has investigated their associations with PTDM. In this study, we ascertained whether single nucleotide polymorphisms (SNPs) in TLRs are associated with PTDM in the Korea population...
2016: Nephron
https://www.readbyqxmd.com/read/27455963/comparison-of-statistical-approaches-for-dealing-with-immortal-time-bias-in-drug-effectiveness-studies
#19
COMPARATIVE STUDY
Mohammad Ehsanul Karim, Paul Gustafson, John Petkau, Helen Tremlett
In time-to-event analyses of observational studies of drug effectiveness, incorrect handling of the period between cohort entry and first treatment exposure during follow-up may result in immortal time bias. This bias can be eliminated by acknowledging a change in treatment exposure status with time-dependent analyses, such as fitting a time-dependent Cox model. The prescription time-distribution matching (PTDM) method has been proposed as a simpler approach for controlling immortal time bias. Using simulation studies and theoretical quantification of bias, we compared the performance of the PTDM approach with that of the time-dependent Cox model in the presence of immortal time...
August 15, 2016: American Journal of Epidemiology
https://www.readbyqxmd.com/read/27369899/intracellular-disassembly-and-activity-of-pertussis-toxin-require-interaction-with-atp
#20
Roger D Plaut, Karen M Scanlon, Michael Taylor, Ken Teter, Nicholas H Carbonetti
The active subunit (S1) of pertussis toxin (PT), a major virulence factor of Bordetella pertussis, ADP-ribosylates Gi proteins in the mammalian cell cytosol to inhibit GPCR signaling. The intracellular pathway of PT includes endocytosis and retrograde transport to the trans-Golgi network (TGN) and endoplasmic reticulum (ER). Subsequent translocation of S1 to the cytosol is presumably preceded by dissociation from the holotoxin. In vitro, such dissociation is stimulated by interaction of PT with ATP. To investigate the role of this interaction in cellular events, we engineered a form of PT (PTDM) with changes to two amino acids involved in the interaction with ATP...
2016: Pathogens and Disease
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