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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1989-4-20
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pubmed:abstractText |
Seventeen neuroblastomas at different clinical stages were analysed for their N-myc copy number and flow cytometrically determined DNA content. Aneuploidy was found in 11 patients (65 per cent), whereas the remaining were near-diploid. N-myc amplification was found significantly (P less than 0.05) confined to near-diploid tumors (3 out of 6 cases). This finding indicates a very selective mechanism of oncogene amplification which is independent of gross chromosomal imbalance and limited to specific loci in the human genome. Association of near-diploidy and age at diagnosis older than 24 months was also demonstrated (P less than 0.05). Thus, flow cytometric analysis of DNA content together with N-myc gene dosage allowed us to distinguish two different subsets of neuroblastoma tumors: the first one aneuploid, with single-copy N-myc, usually observed in patients younger than 24 months with localized or IV-S clinical stages; the second one near-diploid, with frequent N-myc amplification, usually observed in patients older than 24 months with advanced clinical stages.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:issn |
0262-0898
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
7
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
201-11
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:2920475-Child,
pubmed-meshheading:2920475-Child, Preschool,
pubmed-meshheading:2920475-Chromosome Aberrations,
pubmed-meshheading:2920475-DNA, Neoplasm,
pubmed-meshheading:2920475-Female,
pubmed-meshheading:2920475-Flow Cytometry,
pubmed-meshheading:2920475-Gene Amplification,
pubmed-meshheading:2920475-Humans,
pubmed-meshheading:2920475-Infant,
pubmed-meshheading:2920475-Male,
pubmed-meshheading:2920475-Neoplasm Staging,
pubmed-meshheading:2920475-Neuroblastoma,
pubmed-meshheading:2920475-Oncogenes
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pubmed:articleTitle |
Association of near-diploid DNA content and N-myc amplification in neuroblastomas.
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pubmed:affiliation |
Department of Pediatrics, University La Sapienza, Rome, Italy.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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