scholarly journals Course of renal allograft function after diagnosis and treatment of post‐transplant lymphoproliferative disorders in pediatric kidney transplant recipients

2021 ◽  
Author(s):  
Henriette Zierhut ◽  
Nele Kanzelmeyer ◽  
Anja Buescher ◽  
Britta Höcker ◽  
Christine Mauz‐Körholz ◽  
...  
2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Thomas Duflot ◽  
Charlotte Laurent ◽  
Anne Soudey ◽  
Xavier Fonrose ◽  
Mouad Hamzaoui ◽  
...  

AbstractThis study addressed the hypothesis that epoxyeicosatrienoic acids (EETs) synthesized by CYP450 and catabolized by soluble epoxide hydrolase (sEH) are involved in the maintenance of renal allograft function, either directly or through modulation of cardiovascular function. The impact of single nucleotide polymorphisms (SNPs) in the sEH gene EPHX2 and CYP450 on renal and vascular function, plasma levels of EETs and peripheral blood monuclear cell sEH activity was assessed in 79 kidney transplant recipients explored at least one year after transplantation. Additional experiments in a mouse model mimicking the ischemia–reperfusion (I/R) injury suffered by the transplanted kidney evaluated the cardiovascular and renal effects of the sEH inhibitor t-AUCB administered in drinking water (10 mg/l) during 28 days after surgery. There was a long-term protective effect of the sEH SNP rs6558004, which increased EET plasma levels, on renal allograft function and a deleterious effect of K55R, which increased sEH activity. Surprisingly, the loss-of-function CYP2C9*3 was associated with a better renal function without affecting EET levels. R287Q SNP, which decreased sEH activity, was protective against vascular dysfunction while CYP2C8*3 and 2C9*2 loss-of-function SNP, altered endothelial function by reducing flow-induced EET release. In I/R mice, sEH inhibition reduced kidney lesions, prevented cardiac fibrosis and dysfunction as well as preserved endothelial function. The preservation of EET bioavailability may prevent allograft dysfunction and improve cardiovascular disease in kidney transplant recipients. Inhibition of sEH appears thus as a novel therapeutic option but its impact on other epoxyfatty acids should be carefully evaluated.


2020 ◽  
Vol 7 (2) ◽  
pp. e21-e21
Author(s):  
Vahideh Ebrahimzadeh Attari ◽  
Seyed Sadroddin Rasi Hashemi ◽  
Solmaz Oloufi ◽  
Leili Aghebati Maleki ◽  
Dariush Shanehbandi ◽  
...  

Introduction: The FOXP3 protein is an immune regulatory protein that specifically maintains the function and differentiation of regulatory T cells (Tregs) and prevents autoimmunity. Variations in FOXP3 gene may alter its function and also the immune response. Objectives: The present study was conducted to investigate the association of the FOXP3 gene polymorphisms -3499 A/G and -3279 A/C with renal allograft function and survival in kidney transplant recipients. Patients and Methods: In this cross-sectional study, 150 eligible kidney transplant recipients were evaluated. Kidney function was evaluated at three- and five-year post-transplant using serum creatinine level and glomerular filtration rate as indicators. Genotyping of the study participants was performed using the PCR– restriction fragment length polymorphism method. Results: The frequencies of AA, AG, and GG genotypes of the -3499 A/G polymorphism were 62.42%, 29.53%, and 8.05%, respectively. For the -3279 A/C polymorphism, the frequencies of the AA, AC, and CC genotypes were 21.33%, 32%, and 46.67%, respectively. The mean ± SD of serum creatinine level, three and five years after transplantation were 1.70 ± 1.58 and 1.87 ± 1.94, respectively. Serum creatinine level and kidney function did not show any significant association with these polymorphisms. Conclusion: In the present study, only 10% of participants experienced episodes of severe kidney dysfunction and we did not find any significant association between kidney function and the subjects’ genotypes. Further epidemiologic studies with greater sample sizes may be needed to clarify this association.


Author(s):  
Nutting K ◽  
Naman J ◽  
Mitchell NS ◽  
Josephson M ◽  
Saunders MR

Background: Weight gain after kidney transplant has been demonstrated to have adverse effects on allograft function and longevity. We sought to determine both the prevalence of post-transplant weight gain and factors associated with weight gain.


PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252979
Author(s):  
Skylar L. Nahi ◽  
Aneesha A. Shetty ◽  
Sajal D. Tanna ◽  
Joseph R. Leventhal

Background Kidney transplant recipients are a unique cohort in regard to SARS-CoV 2 susceptibility and clinical course, owing to their immunosuppressed state and propensity for kidney injury. The primary purpose of this study is to ascertain if, in kidney transplant recipients, SARS-CoV 2 infection impacts long term renal allograft function. Methods This retrospective, single-center study reviewed 53 kidney transplant recipients with a positive SARS-CoV-2 PCR at NMH from January 1, 2020 to June 30, 2020. Results Change in eGFR from baseline kidney function prior to infection to 90 days after the first positive SARS-CoV 2 test was +1.76%, -17.5% and -23.16% the mild, moderate and severe disease groups respectively. There was a significant decline in kidney function in the moderate and severe disease cohorts as compared to the mild disease cohort, with respective p values of p = 0.0002 and p = 0.021. Relative to the mild disease cohort, the moderate and severe disease cohorts also demonstrated significantly increased risk of developing AKI (66%, 85%), both with p values of P = 0.0001. Conclusions Clinically severe SARS-CoV 2 infection is associated with greater risk of acute kidney injury and greater decline in renal allograft function at 90 days post infection, compared to mild disease.


Pharmaceutics ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 413
Author(s):  
Theerawut Klangjareonchai ◽  
Natsuki Eguchi ◽  
Ekamol Tantisattamo ◽  
Antoney J. Ferrey ◽  
Uttam Reddy ◽  
...  

Hyperglycemia after kidney transplantation is common in both diabetic and non-diabetic patients. Both pretransplant and post-transplant diabetes mellitus are associated with increased kidney allograft failure and mortality. Glucose management may be challenging for kidney transplant recipients. The pathophysiology and pattern of hyperglycemia in patients following kidney transplantation is different from those with type 2 diabetes mellitus. In patients with pre-existing and post-transplant diabetes mellitus, there is limited data on the management of hyperglycemia after kidney transplantation. The following article discusses the nomenclature and diagnosis of pre- and post-transplant diabetes mellitus, the impact of transplant-related hyperglycemia on patient and kidney allograft outcomes, risk factors and potential pathogenic mechanisms of hyperglycemia after kidney transplantation, glucose management before and after transplantation, and modalities for prevention of post-transplant diabetes mellitus.


BMJ Open ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. e047263
Author(s):  
Andrea Gibbons ◽  
Janet Bayfield ◽  
Marco Cinnirella ◽  
Heather Draper ◽  
Rachel J Johnson ◽  
...  

ObjectiveTo examine quality of life (QoL) and other patient-reported outcome measures (PROMs) in kidney transplant recipients and those awaiting transplantation.DesignLongitudinal cohort questionnaire surveys and qualitative semi-structured interviews using thematic analysis with a pragmatic approach.SettingCompletion of generic and disease-specific PROMs at two time points, and telephone interviews with participants UK-wide.Participants101 incident deceased-donor (DD) and 94 incident living-donor (LD) kidney transplant recipients, together with 165 patients on the waiting list (WL) from 18 UK centres recruited to the Access to Transplantation and Transplant Outcome Measures (ATTOM) programme completed PROMs at recruitment (November 2011 to March 2013) and 1 year follow-up. Forty-one of the 165 patients on the WL received a DD transplant and 26 received a LD transplant during the study period, completing PROMs initially as patients on the WL, and again 1 year post-transplant. A subsample of 10 LD and 10 DD recipients participated in qualitative semi-structured interviews.ResultsLD recipients were younger, had more educational qualifications and more often received a transplant before dialysis. Controlling for these and other factors, cross-sectional analyses at 12 months post-transplant suggested better QoL, renal-dependent QoL and treatment satisfaction for LD than DD recipients. Patients on the WL reported worse outcomes compared with both transplant groups. However, longitudinal analyses (controlling for pre-transplant differences) showed that LD and DD recipients reported similarly improved health status and renal-dependent QoL (p<0.01) pre-transplant to post-transplant. Patients on the WL had worsened health status but no change in QoL. Qualitative analyses revealed transplant recipients’ expectations influenced their recovery and satisfaction with transplant.ConclusionsWhile cross-sectional analyses suggested LD kidney transplantation leads to better QoL and treatment satisfaction, longitudinal assessment showed similar QoL improvements in PROMs for both transplant groups, with better outcomes than for those still wait-listed. Regardless of transplant type, clinicians need to be aware that managing expectations is important for facilitating patients’ adjustment post-transplant.


2008 ◽  
Vol 86 (Supplement) ◽  
pp. 589
Author(s):  
L E. Morales-Buenrostro ◽  
C De Leo ◽  
M Arvizu ◽  
B Gabilondo ◽  
M Vilatoba ◽  
...  

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