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A myelopoiesis gene signature during remission in ANCA associated vasculitis does not predict relapses but seems to reflect ongoing prednisolone therapy
Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för läkemedelsforskning. Linköpings universitet, Hälsouniversitetet.
Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för läkemedelsforskning. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Hjärt- och Medicincentrum, Njurmedicinska kliniken US.
Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för läkemedelsforskning. Linköpings universitet, Hälsouniversitetet.
Linköpings universitet, Institutionen för medicin och hälsa. Linköpings universitet, Hälsouniversitetet.
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2014 (engelsk)Inngår i: Clinical and Experimental Immunology, ISSN 0009-9104, E-ISSN 1365-2249, Vol. 175, nr 2, s. 215-226Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A myelopoiesis gene signature in circulating leucocytes, exemplified by increased myeloperoxidase (MPO) and proteinase 3 (PR3) mRNA levels, has been reported in patients with active anti-neutrophil cytoplasm antibody associated vasculitis (AAV) and to a lesser extent during remission. We hypothesized that this signature could predict disease relapse. mRNA levels of PR3, MPO, selected myelopoiesis transcription factors (CEBPA, CEBPB, SPIB, SPI1) and microRNAs (miRNAs) from patient and control peripheral blood mononuclear cells (PBMCs) and polymorphonuclear cells (PMNs) were analyzed and associated with clinical data. Patients in stable remission had higher mRNA levels for PR3 (PBMCs, PMNs) and MPO (PBMCs). PR3 and SPIB mRNA correlated positively in control but negatively in patient PBMCs. Statistically significant correlations existed between PR3 mRNA and several miRNAs in controls, but not in patients. PR3/MPO mRNA levels were not associated with previous or future relapses but correlated to steroid treatment. Prednisolone doses were negatively linked to SPIB and miR-155-5p, miR-339-5p (PBMCs) and to miR-221, miR-361, miR-505 (PMNs). PR3 mRNA in PBMCs correlated with time since last flare, blood leucocyte count and estimated glomerular filtration rate. Our results show that elevated leucocyte PR3 mRNA levels in AAV patients in remission do not predict relapse. The origin seems multifactorial, but to an important part explainable by prednisolone action. Gene signatures in patients with AAV undergoing steroid treatment should therefore be interpreted accordingly.

sted, utgiver, år, opplag, sider
Wiley-Blackwell, 2014. Vol. 175, nr 2, s. 215-226
Emneord [en]
autoimmunity, microRNA, proteinase 3, rituximab, steroids, transcription factors
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-105185DOI: 10.1111/cei.12236ISI: 000333817000008PubMedID: 24215168OAI: oai:DiVA.org:liu-105185DiVA, id: diva2:704288
Tilgjengelig fra: 2014-03-11 Laget: 2014-03-11 Sist oppdatert: 2017-12-05bibliografisk kontrollert

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Kurz, TinoWeiner, MariaSkoglund, CamillaBasnet, SandeepEriksson, PerSegelmark, Mårten

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