title: [Detection of expression of multidrug resistance gene in breast cancer by RT-PCR].
abstract: Using RT-PCR technique, we established a method for measuring expression of mdr-1 gene in breast cancer and the conditions affecting PCR results. Expression of mdr-1 gene was detected in 74 breast cancer samples. The results showed that 34.3%(12/35) untreated primary lesions and 59.0%(23/39) relapsed metastatic lesions had positive expression of mdr-1 gene (P < 0.05). In 32 patients, the overall correlation of mdr-1 gene expression with clinical drug sensitivity was 78.1%. The results validate that RT-PCR assay is highly sensitive, relatively quantitative and reliable for measuring levels of mdr-1 gene expression in clinical samples.
authors.affiliation: Academy of Military Medical Sciences, Beijing.
authors.forename: X
authors.initials: X
authors.lastname: Liu
authors.forename: C
authors.initials: C
authors.lastname: Shi
authors.forename: S
authors.initials: S
authors.lastname: Song
mesh_terms: D001943:Breast Neoplasms / Q000235:genetics*; D005260:Female; D015870:Gene Expression; D019450:Genes, MDR; D006801:Humans; D016133:Polymerase Chain Reaction / Q000379:methods