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Microchimerism in female bone marrow and bone decades after fetal mesenchymal stem-cell trafficking in pregnancy.

Author information

Affiliations

  • 1. Institute of Reproductive and Developmental Biology, Division of Paediatrics, Obstetrics and Gynaecology, Imperial College London, Hammersmith Campus, London W12 0NN, UK.
      Authors
    • O'Donoghue K 1
    (1 author)

ORCIDs linked to this article

Lancet (London, England), 01 Jul 2004, 364(9429):179-182
https://doi.org/10.1016/s0140-6736(04)16631-2 PMID: 15246731 

A comment on this article appears in "Nature of stem cell involved in fetomaternal microchimerism." Lancet. 2004 Nov 27-Dec 3;364(9449):1936.

Abstract 

Fetal cells enter maternal blood during pregnancy and persist in women with autoimmune disease. The frequency of subsequent fetomaternal microchimerism in healthy women and its cell type is unknown. To test the hypothesis that fetal mesenchymal stem cells persist in maternal organs, we studied female bone marrow and ribs. Male cells were identified by XY fluorescence in-situ hybridisation in marrow-derived mesenchymal stem cells and in rib sections from all women with male pregnancies, but not in controls (9/9 vs 0/5, p=0.0005). We conclude that fetal stem cells transferred into maternal blood engraft in marrow, where they remain throughout life. This finding has implications for normal pregnancy, for obstetric complications that increase fetomaternal trafficking, and for graft survival after transplantation.

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Read article at publisher's site: https://doi.org/10.1016/s0140-6736(04)16631-2

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