Complement Activation in Peritoneal Dialysis–Induced Arteriolopathy
CLINICAL RESEARCH www.jasn.org Complement Activation in Peritoneal Dialysis–Induced Arteriolopathy Maria Bartosova,1 Betti Schaefer,1 Justo Lorenzo Bermejo,2 Silvia Tarantino,3 Felix Lasitschka,4 Stephan Macher-Goeppinger,5 Peter Sinn,4 Bradley A. Warady,6 Ariane Zaloszyc,7 Katja Parapatics,8 Peter Májek,8 Keiryn L. Bennett,8 Jun Oh,9 Christoph Aufricht,3 Franz Schaefer,1 Klaus Kratochwill,3,10 and Claus Peter Schmitt1 1Division of Pediatric Nephrology, Center for Pediatric and Adolescent Medicine, 2Department of Medical Biometry, Institute of Medical Biometry and Informatics, and 4Department of General Pathology, Institute of Pathology, University of Heidelberg, Heidelberg, Germany; 3Department of Pediatrics and Adolescent Medicine and 10Christian Doppler Laboratory for Molecular Stress Research in Peritoneal Dialysis, Medical University of Vienna, Vienna, Austria; 5Department of Pathology, University Medical Center Mainz, Mainz, Germany; 6Division of Pediatric Nephrology, Children’s Mercy Hospital, University of Missouri- Kansas City School of Medicine, Kansas City, Missouri; 7Department of Pediatrics 1, University Hospital of Strasbourg, Strasbourg, France; 8CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; and 9Department of Pediatric Nephrology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany ABSTRACT Cardiovascular disease (CVD) is the leading cause of increased mortality in patients with CKD and is further aggravated by peritoneal dialysis (PD). Children are devoid of preexisting CVD and provide unique insight into specificuremia-andPD-inducedpathomechanismsofCVD.We obtained peritoneal specimens from children with stage 5 CKD at time of PD catheter insertion (CKD5 group), children with established PD (PD group), and age-matched nonuremic controls (n=6/group). We microdissected omental arterioles from tissue layers not directly exposed to PD fluid and used adjacent sections of four arterioles per patient for transcriptomic and proteomic analyses.
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