Abstract:
:We have examined the effect of graft-versus-host disease (GVHD) on the reconstitution of donor hematopoiesis in a murine bone marrow transplant (BMT) model of GVHD to minor histocompatibility antigens. GVHD had no effect on peripheral blood counts, which normalized by 1 month after BMT, and did not affect numbers of hematopoietic progenitors in the BM, which remained decreased in all transplant recipients. Donor stem cells (colony-forming unit-spleen day 8) and stem cell self-renewal remained low in all mice for 5 months after transplant, but GVHD further damaged the stem cell compartment. Peripheral counts 1 month after transplant were supported by increased numbers of stem cells in cycle and increased splenic hematopoiesis. However, GVHD altered the pattern of extramedullary hematopoiesis, causing dramatically decreased activity in the spleen and increased activity in the liver. We conclude that GVHD further decreases hematopoietic reserve and causes damage to the donor stem cell compartment during hematopoietic reconstitution after transplant, despite unaffected progenitor frequencies and peripheral blood counts.
journal_name
Bloodjournal_title
Bloodauthors
van Dijken PJ,Wimperis J,Crawford JM,Ferrara JLsubject
Has Abstractpub_date
1991-11-15 00:00:00pages
2773-9issue
10eissn
0006-4971issn
1528-0020journal_volume
78pub_type
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