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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2005-10-7
pubmed:abstractText
Immune dysfunction after allogeneic stem cell transplantation (SCT) is closely associated with cell turnover of lymphocytes and homeostasis of hematopoietic stem cells. Telomeres, repetitive sequences (TTAGGG)n on the end of linear chromosomes, reflect the mitotic history of stem cells. Using telomere fluorescence in situ hybridization (FISH) and flow cytometry (flow-FISH), we measured telomere length in lymphocytes and neutrophils at various intervals to analyze the relationship between telomere length change and clinical features in 5 patients who underwent allogeneic bone marrow transplantation. During the first year after allogeneic stem cell transplantation, a marked fluctuation of telomere length in peripheral blood leukocytes was observed in all recipients, and in 3 patients there was a reduction of telomere length during chronic graft-versus-host disease (GvHD) or during post-transplant lymphoproliferative disorder. The reduction of telomere length during GvHD was evident in lymphocytes and neutrophils, but telomere length in neutrophils tended to recover earlier than that observed in lymphocytes. The rapid reduction of telomere length in leukocytes during GvHD was too extensive to be explained by the end-replication problem, suggesting the presence of a telomerically unstable hematopoietic condition after transplant in vivo.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
1107-3756
pubmed:author
pubmed:issnType
Print
pubmed:volume
16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
883-8
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Marked telomere fluctuation of leukocytes during graft-versus-host disease in allogeneic stem cell transplantation.
pubmed:affiliation
First Department of Internal Medicine, Tokyo Medical University, Tokyo 160-0023, Japan. yub@dd.iij4u.or.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't