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Amsterdam-Zuidoost, Netherlands

Trzonkowski P.,Medical University of Gdansk | Bacchetta R.,Stanford University | Battaglia M.,Istituto di Ricovero e Cura rattere Scientif Co San Raf Aele Scientif C Institute | Berglund D.,Uppsala University | And 20 more authors.
Science Translational Medicine | Year: 2015

Improper activation of the immune system contributes to a variety of clinical conditions, including autoimmune and allergic diseases as well as solid organ and bone marrow transplantation. One approach to counteract this activation is through adoptive therapy with regulatory T cells (Tregs). Ef orts to manufacture these cells have led to good manufacturing practice-compliant protocols, and Treg products are entering early clinical trials. Here, we report the stance of the European Union Cooperation in Science and Technology Action BM1305, "Action to Focus and Accelerate Cell-based Toleranceinducing Therapies-A FACTT?," which identif es hurdles hindering Treg clinical applications in Europe and provides possible solutions. Source

Eilander H.J.,Division Research | Van Heugten C.M.,Maastricht University | Wijnen V.J.M.,Division Research | Croon M.A.,University of Tilburg | De Kort P.L.M.,St.Elisabeth Hospital
Journal of Pediatric Rehabilitation Medicine | Year: 2013

AIMS: To explore the course of recovery of consciousness and factors predicting the outcome of severe brain injury with a prolonged period of unconsciousness in children and young adults receiving a specialized rehabilitation treatment, the Early Intensive Neurorehabilitation Programme (EINP). METHODS: A cohort of forty-four patients aged 1.6-25.5 years (M=16.0) with traumatic acquired brain injury (TBI) or non-traumatic acquired brain injury (nTBI) were examined using the Western Neuro Sensory Stimulation Profile every two weeks, from the application for EINP until discharge. The level of consciousness was assessed with the Post-Acute Level of Consciousness Scale, and the level of disability was determined by the Disability Rating Scale. Long-term level of disability of all TBI patients (N=32) was assessed between 2.0 and 4.4 years after discharge from EINP. RESULTS: Two-thirds of all patients recovered to consciousness. Three recovery patterns were identified: remaining in a vegetative state (VS), slow recovery of consciousness, and fast recovery of consciousness. In the long-term, 11 of the TBI patients were severely disabled, 13 were moderately disabled, and 4 were mildly disabled. All TBI patients who were in VS at discharge either had deceased, or recovered to a very severely disabled state. CONCLUSIONS: Three recovery patterns identified in an early stage after starting EINP made it possible to predict long-term level of disability. © 2013 - IOS Press and the authors. All rights reserved. Source

Slot E.,Division Research | Janssen M.P.,Sanquin Blood Supply Foundation | Marijt-Van Der Kreek T.,Division Research | Zaaijer H.L.,Division Research | And 3 more authors.
Transfusion | Year: 2016

BACKGROUND Risk behavior-based donor selection procedures are widely used to mitigate the risk of transfusion-transmissible infections (TTIs), but their effectiveness is disputed in countries with low residual risks of TTIs. STUDY DESIGN AND METHODS In 1995 to 2014, Dutch blood donors infected with hepatitis B virus (HBV), hepatitis C virus (HCV), human immunodeficiency virus (HIV), human T-lymphotropic virus (HTLV), or syphilis were interviewed by trained medical counselors to identify risk factors associated with TTIs. Trends in the prevalence and incidence of TTIs were analyzed using binomial regression models. RESULTS A total of 972 new donors and 381 repeat donors had TTIs. New donors had higher rates of TTIs compared to repeat donors. Although the HBV and HCV prevalence gradually decreased over time, the incidence of all five TTIs remained stable during the past two decades. In new donors the TTIs had the following risk profiles: "blood-blood contact" for HCV, "unprotected sex" for HIV and syphilis, and "country of birth" for HBV and HTLV. In infected repeat donors, sexual risk factors predominated for all TTIs. At posttest counseling, 28% of infected repeat donors admitted to risk factors leading to permanent donor exclusion if revealed during the donor selection procedure (predominantly male-to-male sex and recent diagnosis of syphilis). CONCLUSION The prevalence and incidence of TTIs among Dutch blood donors are six- to 60-fold lower than in the general Dutch population, illustrating the effectiveness of donor selection procedures. However, at least a quarter of infected donors appeared noncompliant to the donor health questionnaire (DHQ), suggesting that DHQs, or the way donor questioning is implemented, can be improved. © 2015 AABB. Source

Gkoumassi E.,Division Research | Dijkstra-Tiekstra M.J.,Division Research | Hoentjen D.,Division Research | De Wildt-Eggen J.,Division Research
Transfusion | Year: 2012

BACKGROUND: During processing and storage, red blood cells (RBCs) undergo changes and cell injury resulting in hemolysis. Mostly, the separation of whole blood in top-and-bottom quadruple bag systems with break openings takes less than 4 minutes. However, longer separation times are not uncommon. The aims were to investigate whether hemolysis is increased in RBCs with longer separation time (RBCs >6 min) compared to regular RBCs (RBCs reg), to measure hemolysis increase during storage and to study whether frequency of hemolytic donations is donor dependent. STUDY DESIGN AND METHODS: RBCs >6 min (n = 172) and 172 matched controls were tested for hemolysis on Days 1 and 21 RBC units from each group were stored at 4 ± 2°C and tested again after 5 weeks. Donor dependency was retrospectively investigated for 100 hemolytic RBC units. RESULTS: RBCs >6 min exhibited a higher mean hemolysis rate than RBCs reg (0.058% vs. 0.033%). Four RBC units were hemolytic (>0.8%), all RBCs >6 min (2.36%). During storage, hemolysis in both groups increased with 0.24%. Hemolysis frequency did not seem to be donor dependent. CONCLUSIONS: Increased separation time is a useful screening tool for potentially increased hemolysis rate in RBCs. Hemolysis rate increased during storage equally in both groups. Hemolysis frequency appears donor independent. © 2011 American Association of Blood Banks. Source

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