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dc.contributor.authorSmedbråten, Julia
dc.contributor.authorMjøen, Geir
dc.contributor.authorHartmann, Anders
dc.contributor.authorÅsberg, Anders
dc.contributor.authorRollag, Halvor
dc.contributor.authorMollnes, Tom Eirik
dc.contributor.authorSandvik, Leiv
dc.contributor.authorFagerland, Morten W.
dc.contributor.authorThiel, Steffen
dc.contributor.authorSagedal, Solbjørg
dc.date.accessioned2017-03-15T12:36:00Z
dc.date.available2017-03-15T12:36:00Z
dc.date.issued2016-10-18
dc.description.abstractBackground: Higher incidence of malignancy and infectious diseases in kidney transplant recipients is related to immunosuppressive treatment after transplantation and the recipient’s native immune system. The complement system is an essential component of the innate immunity. The aim of the present study was to investigate the association of effector molecules of the lectin complement pathway with graft and patient survival after kidney transplantation. Methods: Two mannan-binding lectin (MBL) associated proteases, MASP-2 and MASP-3 (activators of the lectin pathway) and two MBL-associated proteins, MAp44 and MAp19 (inhibitors of the lectin pathway) were measured at the time of transplantation in 382 patients (≥17 years old) transplanted in 2000–2001. The cohort was followed until December 31, 2014. Data on patient and graft survival were obtained from the Norwegian Renal Registry. Cox proportional hazard regression models were performed for survival analyses. Results: Low MAp44 level (1st versus 2–4 quartile) was significantly associated with overall mortality; HR 1.52, 95 % CI 1.08–2.14, p = 0.017. In the sub analyses in groups below and above median age (51.7 years), low MAp44 as a predictor of overall mortality was statistically significant only in recipients of ≤51.7 years; HR 2.57, 95 % CI 1.42–4.66, p = 0.002. Furthermore, low MAp44 was associated with mortality due to infectious diseases; HR 2.22, 95 % CI 1.11–4.41, p = 0.023. There was no association between MASP-2, MASP-3 or MAp19 levels and patient mortality. No association between any measured biomarkers and death censored graft loss was found. Conclusions: Low MAp44 level at the time of transplantation was associated with increased overall mortality in kidney recipients of median age of 51.7 years or below and with mortality due to infectious diseases in the whole patient cohort after nearly 14-years of follow up after transplantation. No associations between other effector molecules; MASP-2, MASP-3 or MAp19 and recipient mortality were found, as well as no association of any biomarker with death censored graft loss.en_US
dc.description© 2016 The Author(s). Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.en_US
dc.identifier.citationSmedbråten J, Mjøen GH, Hartmann A, Åsberg A, Rollag H, Mollnes TE, Sandvik L, Fagerland M, Thiel S, Sagedal S. Low level of MAp44, an inhibitor of the lectin complement pathway, and long-term graft and patient survival; a cohort study of 382 kidney recipients. BMC Nephrology. 2016;17(1)en_US
dc.identifier.cristinIDFRIDAID 1393719
dc.identifier.doi10.1186/s12882-016-0373-9
dc.identifier.issn1471-2369
dc.identifier.urihttps://hdl.handle.net/10037/10700
dc.language.isoengen_US
dc.publisherBioMed Centralen_US
dc.relation.journalBMC Nephrology
dc.relation.projectIDNorges forskningsråd: 223255en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF223255/Norway/CentreofMolecularInflammationResearch/CEMIRen_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Medical disciplines: 700::Clinical medical disciplines: 750::Nephrology, urology: 772en_US
dc.subjectVDP::Medisinske Fag: 700::Klinisk medisinske fag: 750::Nefrologi, urologi: 772en_US
dc.subjectKidney transplantationen_US
dc.subjectComplementen_US
dc.subjectRecipient survivalen_US
dc.titleLow level of MAp44, an inhibitor of the lectin complement pathway, and long-term graft and patient survival; a cohort study of 382 kidney recipientsen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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