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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2005-3-7
pubmed:abstractText
The expression of three cyclin D subtypes was defined immunohistochemically with cyclin D1, D2 and D3 monoclonal antibodies in 52 human glioma biopsies and eight control samples of normal brain tissue. PCNA labeling indices (LI) were used to evaluate proliferation in the glioma biopsies. LI of cyclin D1, D2 and D3 were compared with histological grade and the proliferating cell nuclear antigen (PCNA) LI. Cyclin D1 expression only was observed in normal brain tissue, but marked overexpression of cyclin D1 and cyclin D3 was observed in glioma. Cyclin D1 LI increased with malignancy, in parallel with an increase in PCNA LI. Lower expression of cyclin D2 was found in a small fraction of the gliomas, but its LI did not vary significantly with grade. Cyclin D3 was mainly expressed by malignant gliomas and was rarely observed in low-grade glioma. Cyclin D2 and D3 expression correlated with PCNA LI, but not as strongly as for cyclin D1. Expression of cyclin D1 is closely related to both the oncogenesis and progression of glioma, while cyclin D3 is associated with transformation to a malignant phenotype. Cyclin D2 is weakly expressed and shows no marked relationship with any aspect of tumorigenesis. The exact contribution of cyclin D subtypes to cell cycle progression in neoplastic and reactive cells remains to be defined.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0967-5868
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
166-8
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
The effect of cyclin D expression on cell proliferation in human gliomas.
pubmed:affiliation
Department of Neurosurgery, Xi-Jing Hospital, The Fourth Military Medical University, Xi'an, China. xzhang@fmmu.edu.cn
pubmed:publicationType
Journal Article, Comparative Study