Department of Epidemiology Research, Statens Serum Institut.
Published: October 2015
AI Article Synopsis
Article Abstract
Background: Studies have repeatedly demonstrated that blood donors experience lower mortality than the general population. While this may suggest a beneficial effect of blood donation, it may also reflect the selection of healthy persons into the donor population. To overcome this bias, we investigated the relation between blood donation frequency and mortality within a large cohort of blood donors. In addition, our analyses also took into consideration the effects of presumed health differences linked to donation behavior.
Study Design And Methods: Using the Scandinavian Donation and Transfusion database (SCANDAT), we assessed the association between annual number of donations in 5-year windows and donor mortality by means of Poisson regression analysis. The analyses included adjustment for demographic characteristics and for an internal healthy donor effect, estimated among elderly donors exempted from continued donation because of age criteria.
Results: Statistical analyses included 1,182,495 donors of whom 15,401 died during 9,526,627 person-years of follow-up. Analyses adjusted only for demographic characteristics showed a 18.6% reduction in mortality per additional annual donation (95% confidence interval [CI], 16.8%-20.4%). After additional adjustment for the internal healthy donor effect, each additional annual donation was associated with a 7.5% decreased mortality risk 7.5% (95% CI, 5.7%-9.4%).
Conclusion: We observed an inverse relationship between donation frequency and mortality. The magnitude of the association was reduced after adjustment for an estimate of self-selection in the donor population. Our observations indicate that repeated blood donation is not associated with premature death, but cannot be interpreted as conclusive evidence of a beneficial health effect.
Background: The availability of in situ normothermic regional perfusion (NRP) or ex situ normothermic machine perfusion (NMP) has revolutionized donation after circulatory death (DCD) liver transplant (LT). While some have suggested that NRP and NMP may represent competing technologies for DCD LT, there are many scenarios where these technologies can function in a complementary manner.
Methods: Between January 2022 and March 2024, 83 DCD LTs were performed using NRP (62 NRP alone and 21 NRP + NMP) and were compared with 297 static cold storage (SCS) DCD LTs.
Department of Internal Medicine, Division of Nephrology and Transplantation, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, the Netherlands.
Background: Epidermal growth factor is expressed in the distal tubule and secreted in urine (uEGF) after cleavage of membrane-bound pro-EGF. Lower uEGF is associated with kidney disease progression. EGF also plays a role in the regulation of serum magnesium and blood pressure, but whether uEGF is associated with these parameters is unknown.
Objective: To evaluate the effect of ferritin-guided donation intervals on haemoglobin (Hb) and ferritin levels, iron deficiency and low Hb deferrals in whole-blood donors.
Design: A cluster-randomized stepped-wedge trial.
Methods: In 2017-2019, Sanquin gradually implemented ferritin-guided donation intervals.
A thorough and precise comprehension understanding of the HIV epidemic is crucial for effective HIV prevention and control. This study aimed to update the estimates of the overall HIV burden in China in 2018 and to assess the trends of HIV prevalence, incidence, and mortality from 1985 to 2018. The Estimation and Projection Package (EPP)/Spectrum software was utilized for estimation, a method highly recommended by UNAIDS.
