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Dendritic cell regeneration in the bone marrow of children treated for acute lymphoblastic leukaemia
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Women's and Children's Health. (Barnonkologisk forskning/Lönnerholm)
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2007 (English)In: Scandinavian Journal of Immunology, ISSN 0300-9475, E-ISSN 1365-3083, Vol. 66, no 5, 572-583 p.Article in journal (Refereed) Published
Abstract [en]

Dendritic cells (DC) play a pivotal role in coordinating functions of the immune system. Little is known about DC levels in the bone marrow (BM) of patients receiving cytostatic treatment. We investigated DC levels by flow cytometry in BM at diagnosis, during and post-treatment in 76 children with acute lymphoblastic leukaemia (ALL). The levels of both plasmacytoid DC (pDC) and myeloid DC (mDC) were profoundly reduced at diagnosis. However, the levels of pDC and mDC were significantly higher in T-precursor ALL patients when compared with B-precursor ALL patient group (P = 0.044 and 0.041 respectively). Both subsets normalized in both standard-risk (SR) and high-risk patients after the end of induction at day 50. Patients with minimal residual disease (MRD) at day 50 had significantly higher pDC levels than MRD-negative patients (P = 0.021). In B-precursor SR ALL patients, mDC levels but not pDC levels decreased during prolonged maintenance treatment, remaining reduced at the end of treatment (P = 0.032) and at 6 months post-treatment (P = 0.028). In conclusion, levels of DC in BM normalize quickly in children treated for ALL. Long-term treatment may more profoundly affect mDC subset, which shows reduced levels several months after treatment.

Place, publisher, year, edition, pages
2007. Vol. 66, no 5, 572-583 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-13094DOI: 10.1111/j.1365-3083.2007.02007.xISI: 000250671900011PubMedID: 17892461OAI: oai:DiVA.org:uu-13094DiVA: diva2:40864
Available from: 2008-01-21 Created: 2008-01-21 Last updated: 2011-01-18Bibliographically approved

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Lönnerholm, Gudmar
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