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Sökning: WFRF:(Stenvinkel P) > (2020-2022) > Wennberg L

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  • Witasp, A, et al. (författare)
  • Longitudinal genome-wide DNA methylation changes in response to kidney failure replacement therapy
  • 2022
  • Ingår i: Scientific reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 12:1, s. 470-
  • Tidskriftsartikel (refereegranskat)abstract
    • Chronic kidney disease (CKD) is an emerging public health priority associated with high mortality rates and demanding treatment regimens, including life-style changes, medications or even dialysis or renal transplantation. Unavoidably, the uremic milieu disturbs homeostatic processes such as DNA methylation and other vital gene regulatory mechanisms. Here, we aimed to investigate how dialysis or kidney transplantation modifies the epigenome-wide methylation signature over 12 months of treatment. We used the Infinium HumanMethylation450 BeadChip on whole blood samples from CKD-patients undergoing either dialysis (n = 11) or kidney transplantation (n = 12) and 24 age- and sex-matched population-based controls. At baseline, comparison between patients and controls identified several significant (PFDR < 0.01) CpG methylation differences in genes with functions relevant to inflammation, cellular ageing and vascular calcification. Following 12 months, the global DNA methylation pattern of patients approached that seen in the control group. Notably, 413 CpG sites remained differentially methylated at follow-up in both treatment groups compared to controls. Together, these data indicate that the uremic milieu drives genome-wide methylation changes that are partially reversed with kidney failure replacement therapy. Differentially methylated CpG sites unaffected by treatment may be of particular interest as they could highlight candidate genes for kidney disease per se.
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  • Erlandsson, H., et al. (författare)
  • Observational study of risk factors associated with clinical outcome among elderly kidney transplant recipients in Sweden - a decade of follow-up
  • 2021
  • Ingår i: Transplant International. - : Frontiers Media SA. - 0934-0874 .- 1432-2277. ; 34:11, s. 2363-2370
  • Tidskriftsartikel (refereegranskat)abstract
    • Kidney transplantation (Ktx) in elderly has become increasingly accepted worldwide despite their higher burden of comorbidities. We investigated important risk factors affecting long-term patient and graft survival. We included all (n = 747) Ktx patients >60 years from 2000 to 2012 in Sweden. Patients were age-stratified, 60-64, 65-69 and >70 years. Follow-up time was up to 10 years (median 7.9 years, 75% percentile >10 years). Primary outcome was 10-year patient survival in age-stratified groups. Secondary outcomes were 5-year patient and graft survival in age-stratified groups and the impact of risk factors including Charlson comorbidity index (CCI) on patient and graft survival. Mortality was higher in patients >70 years, after 10 years (HR 1.94; 95% CI 1.24-3.04; P = 0.004). Males had a higher 10-year risk of death (HR 1.39; CI 95% 1.04-1.86; P = 0.024). Five-year patient survival did not differ between age groups. In multivariate Cox analysis (n = 500), hazard ratio for 10-year mortality was 4.6 in patients with CCI >= 7 vs. <4 (95% CI 2.42-8.62; P = 0.0001). Higher CCI identified ESKD patients with 4.6 times higher risk of death after Ktx. We suggest that this index should be used as a part of the preoperative evaluation in elderly.
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