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Sökning: WFRF:(Tomaschitz Andreas)

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1.
  • Drechsler, Christiane, et al. (författare)
  • Homoarginine and Clinical Outcomes in Renal Transplant Recipients : Results From the Assessment of Lescol in Renal Transplantation Study
  • 2015
  • Ingår i: Transplantation. - 0041-1337 .- 1534-6080. ; 99:7, s. 1470-1476
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Despite improvements in kidney transplantation, complications, including cardiovascular morbidity and graft loss, contribute to reduced graft and patient survival. The amino acid homoarginine exerts a variety of beneficial effects that may be relevant for cardiovascular and graft outcomes, which is investigated in the present study.Methods: Homoarginine was measured in 829 renal transplant recipients participating in the placebo group of the Assessment of Lescol in Renal Transplantation study. Mean follow-up was 6.7 years. By Cox regression analyses, we determined hazard ratios (HRs) to reach prespecified, adjudicated endpoints according to baseline homoarginine levels: major adverse cardiovascular events (n = 103), cerebrovascular events (n = 53), graft failure or doubling of serum creatinine (n = 140), noncardiovascular mortality (n = 51), and all-cause mortality (n = 107).Results: Patients mean age was 50 ± 11 years, homoarginine concentration was 1.96 ± 0.76 µmol/L, and 65% were men. Patients in the lowest homoarginine quartile (<1.40 µmol/L) had an adjusted 2.6-fold higher risk of cerebrovascular events compared to those in the highest quartile (>2.34 µmol/L) (HR, 2.56; 95% confidence interval [95% CI], 1.13–5.82). Similarly, the renal endpoint occurred at a significantly increased rate in the lowest homoarginine quartile (HR, 2.34; 95% CI, 1.36–4.02). For noncardiovascular and all-cause mortality, there was also increased risk associated with the lowest levels of homoarginine, with HRs of 4.34 (95% CI, 1.63–10.69) and 2.50 (95% CI, 1.38–4.55), respectively.Conclusions: Low homoarginine is strongly associated with cerebrovascular events, graft loss and progression of kidney failure and mortality in renal transplant recipients. Whether interventions with homoarginine supplementation improve clinical outcomes requires further evaluation.
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  • Shungin, Dmitry, et al. (författare)
  • New genetic loci link adipose and insulin biology to body fat distribution.
  • 2015
  • Ingår i: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 518:7538, s. 187-378
  • Tidskriftsartikel (refereegranskat)abstract
    • Body fat distribution is a heritable trait and a well-established predictor of adverse metabolic outcomes, independent of overall adiposity. To increase our understanding of the genetic basis of body fat distribution and its molecular links to cardiometabolic traits, here we conduct genome-wide association meta-analyses of traits related to waist and hip circumferences in up to 224,459 individuals. We identify 49 loci (33 new) associated with waist-to-hip ratio adjusted for body mass index (BMI), and an additional 19 loci newly associated with related waist and hip circumference measures (P < 5 × 10(-8)). In total, 20 of the 49 waist-to-hip ratio adjusted for BMI loci show significant sexual dimorphism, 19 of which display a stronger effect in women. The identified loci were enriched for genes expressed in adipose tissue and for putative regulatory elements in adipocytes. Pathway analyses implicated adipogenesis, angiogenesis, transcriptional regulation and insulin resistance as processes affecting fat distribution, providing insight into potential pathophysiological mechanisms.
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