Résumé
Objective To study the significance of the expression of mitochondrial DNA Cyt-b and vascular endothelial growth factor mRNA in human breast cancer. Methods Reversed-transcription polymerase chain reaction(RT-PCR)was applied to detect the expressions of mtDNA Cyt-b and VEGF in 19 samples of breast cancer tissue and 19 samples of peritumoral tissues.?-actin served as a quantitative standard marker.The different expressions in breast cancer tissues and paracancerous tissues were compared and their relations with clinical pathology parameters were analyzed. Results The expressions of mtDNA Cyt-b and VEGF mRNA in 19 samples of breast cancer tissues were higher than those in paracancerous tissues,with a significant difference between the two groups(P