Document Detail


Cell proliferation and prevalence of ras gene mutations in 7,12-dimethylbenz(a)anthracene (DMBA)-induced rat mammary tumors.
MedLine Citation:
PMID:  8356338     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Exposure of female inbred Sprague-Dawley Curl rats to intragastric 7,12-dimethylbenz(a)anthracene (DMBA) resulted in a variety of benign and malignant mammary tumors exhibiting a wide spectrum of proliferative activity as measured by [3H]-thymidine autoradiography. On the basis of earlier observations of 21% H-ras codon 61 mutations in DMBA-induced rat mammary tumors reported by Zarbl et al., the prevalence of this type of ras gene mutation was studied in relation to the rate of proliferation in individual benign and malignant tumors. In a series of 50 mammary tumors exhibiting highly different proliferation activities we did not detect any H-ras codon 61 mutations after allele-specific dot blot hybridization of PCR-amplified material obtained from paraffin sections. Neither mode of proliferation nor type of differentiation appears related to H-ras codon 61 mutations. The relevance of activated ras genes for rat mammary carcinogenesis appears restricted to model systems using N-methyl-N-nitro-sourea (MNU) as initiating carcinogen.
Authors:
V Waldmann; B Suchy; H M Rabes
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Research in experimental medicine. Zeitschrift für die gesamte experimentelle Medizin einschliesslich experimenteller Chirurgie     Volume:  193     ISSN:  0300-9130     ISO Abbreviation:  Res Exp Med (Berl)     Publication Date:  1993  
Date Detail:
Created Date:  1993-09-23     Completed Date:  1993-09-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0324736     Medline TA:  Res Exp Med (Berl)     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  143-51     Citation Subset:  IM    
Affiliation:
Pathologisches Institut der Universität München, Germany.
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MeSH Terms
Descriptor/Qualifier:
9,10-Dimethyl-1,2-benzanthracene
Animals
Base Sequence
Cell Division
Codon
DNA Replication
Female
Gene Expression Regulation, Neoplastic / genetics
Genes, ras / genetics*
Immunoblotting
Mammary Neoplasms, Experimental / chemically induced,  genetics*,  pathology
Molecular Sequence Data
Mutation*
Oligonucleotide Probes
Polymerase Chain Reaction
Prevalence
Rats
Rats, Sprague-Dawley
Chemical
Reg. No./Substance:
0/Codon; 0/Oligonucleotide Probes; 57-97-6/9,10-Dimethyl-1,2-benzanthracene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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