Linked Life Data

11426534

Source:http://linkedlifedata.com/resource/pubmed/id/11426534

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5-6
pubmed:dateCreated
2001-6-27
pubmed:abstractText
In view of the relevance of adhesion molecule expression for the mechanisms of homing, trafficking and spreading of malignant cells, we have investigated the expression of surface adhesion molecules in lymphoblasts from 57 acute lymphoblastic leukemia (ALL) cases and tried to correlate the adhesive phenotype with immunological typing, prognostic factors at diagnosis and clinical follow-up. Blasts from all cases expressed adhesion molecules at high rates. Beta1 integrin chain (CD18) was consistently found on blasts from most ALL cases: among integrins of the beta2 family. LFA-1 was detected in 58% of cases, in the virtual absence of other alpha chains. CD54 and CD58 were expressed in variable proportions by ALL blasts and CD44 was detected in the majority of the malignant cells, whereas the CD62L selectin was only present in 24% of cases. B-lineage ALL's displayed similar adhesion molecule phenotypes irrespective of maturational stages of the leukemic cells. We found a significantly reduced expression of beta2 alphaL integrins in the hybrid ALL cases (CD13 and/or CD33 positive). However, these cases did not show differences in clinical presentation and behaviour in comparison with patients of other groups. We did not find a significant correlation between adhesion molecule expression and well established risk factors (age, white blood cell count, central nervous system involvement, chromosomal abnormalities), with the exception of splenomegaly, that was significantly associated with CD18 expression. In the follow-up, no evidence of significant correlation between adhesive phenotype and adverse events such as leukemic relapse and death was found. In conclusion, although expression of adhesion molecules on lymphoblasts confirms the phenotypic heterogeneity of ALL, it appears that this is not relevant for the clinical aspects of the disease and for prognosis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1042-8194
pubmed:author
pubmed:issnType
Print
pubmed:volume
40
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
625-30
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Adhesion molecule expression, clinical features and therapy outcome in childhood acute lymphoblastic leukemia.
pubmed:affiliation
Divisione di Ematologia, Ospedale Pediatrico Bambino Gesù, Istituto di Ricovera e Cura a Carattere Scientifico, Città del Vaticano, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't