Abstract:
:We used a murine model to determine the impact of donor lymphocyte subsets on the incidence of primary marrow graft failure after transplantation of lymphocyte-depleted bone marrow. After lethal irradiation with 7.5 Gy, Balb/c mice received 1 x 10(5) to 4 x 10(7) GvH-nonreactive (C57 x Balb)F1 or GvH-reactive C57Bl/6 marrow cells. Pretreatment with anti-Thy-1.2, anti-CD4/CD8, anti-asialo-GM1 or L-leucyl-L-leucine methyl ester (Leu-Leu-OMe) was employed to eliminate T lymphocytes and/or natural killer cells. Primary graft failure was defined as death with neutrophils < 0.5 x 10(9)/l. To assess long-term chimaerism, the percentage of H-2b-positive spleen cells was determined. Pretreatment with anti-Thy-1.2, anti-CD4/CD8 or Leu-Leu-OMe successfully eliminated GvHR-induced mortality. Graft failure rates gradually declined from 88% after transplantation of 1 x 10(5) cells to 0% after transplantation of 4 x 10(7) C57Bl/6 cells. The incidence of graft failure, however, was not altered by T-cell depletion, provided that the unspecific loss of marrow cells was compensated for. After transplantation of GvH-nonreactive (C57 x Balb)F1 bone marrow, neither ex-vivo treatment with anti-Thy-1.2 and anti-asialo GM1 nor addition of 1 x 10(7) donor thymocytes to the allograft significantly influenced engraftment. The data obtained in our animal model suggest that the total number of marrow cells is of critical importance for successful marrow engraftment and not the presence or absence of T cells, NK cells or GvHR.
journal_name
Br J Haematoljournal_title
British journal of haematologyauthors
Uharek L,Glass B,Gaska T,Gassmann W,Loeffler H,Mueller-Ruchholtz Wdoi
10.1111/j.1365-2141.1994.tb04980.xsubject
Has Abstractpub_date
1994-09-01 00:00:00pages
79-87issue
1eissn
0007-1048issn
1365-2141journal_volume
88pub_type
杂志文章abstract::Using a reverse transcription-polymerase chain reaction (RT-PCR), we identified a patient with typical clinical features of chronic myelogenous leukaemia (CML) in the chronic phase who showed no amplification of the CML-type BCR/ABL transcript. RT-PCR with primers detecting the acute lymphoid leukaemia (ALL)-type tran...
journal_title:British journal of haematology
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abstract::Children with Down syndrome have a 20- to 50-fold increased risk of acute lymphocytic or myeloid leukaemia. Whole or partial gains of chromosome 21 have been described in multiple childhood leukaemias, and have recently been reported as a likely primary event in B-precursor-acute lymphoblastic leukaemia. It is unclear...
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journal_title:British journal of haematology
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abstract::Demand for anticoagulation management is increasing due to an expansion of clinical indications for therapy. One possible model of care to meet demand is patient self-management (PSM), beneficial to patients who need control over their condition. This study aimed to determine the cost and cost-effectiveness of PSM of ...
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