Linked Life Data

1486838

Source:http://linkedlifedata.com/resource/pubmed/id/1486838

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:dateCreated
1993-2-24
pubmed:abstractText
The cytochrome P450-dependent monooxygenases play a central role in the metabolism of chemical carcinogens. The action of these enzymes can lead to either carcinogen detoxication or activation. Differences in P450 expression in animal models give rise to large differences in susceptibility to chemical carcinogens, so genetic polymorphisms in P450 expression may be expected to be an important factor in individual human susceptibility to cancer. Of particular interest is the genetic polymorphism at the cytochrome P450-debrisoquine/sparteine hydroxylase locus (CYP2D6). Although this is a minor liver P450, its polymorphic expression is associated with the abnormal metabolism of at least 30 therapeutic drugs, including beta-blockers and tricyclic antidepressants. Conflicting reports have been made on the association of this polymorphism with cancer susceptibility. This disagreement may be attributable to limitations of the phenotyping assay used to identify affected individuals (poor metabolizers, PMs). In order to clarify these anomalies, we have developed a simple DNA-based assay with which we can identify the majority of PMs. The assay is centered around the primary gene defect responsible for the polymorphism, a G to A transition at the junction of intron 3/exon 4 which results in a frame-shift in the resultant mRNA. The frequency of this mutation is 70-80% in PMs. We have studied the frequency of mutated alleles in a control population and in a wide range of cancer patients. No association between this polymorphism and lung cancer susceptibility was observed; however, in other populations of cancer patients some very interesting shifts were found in the proportion of PMs and heterozygotes from that in the normal population.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-1686062, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-1978251, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-1997931, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-2101721, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-2374176, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-2448875, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-2574001, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-2731181, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-2899325, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-3052575, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-3123997, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-3652049, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-6504125, http://linkedlifedata.com/resource/pubmed/commentcorrection/1486838-6814745
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0091-6765
pubmed:author
pubmed:issnType
Print
pubmed:volume
98
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
107-12
pubmed:dateRevised
2010-9-7
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Molecular genetic analysis of the cytochrome P450-debrisoquine hydroxylase locus and association with cancer susceptibility.
pubmed:affiliation
ICRF Molecular Pharmacology Group, University of Edinburgh, United Kingdom.
pubmed:publicationType
Journal Article