RT Journal Article SR Electronic T1 Mechanisms of reversal of adriamycin resistance in human ovarian carcinoma cell line by ultrasound JF International Journal of Gynecologic Cancer JO Int J Gynecol Cancer FD BMJ Publishing Group Ltd SP 76 OP 81 DO 10.1136/ijgc-00009577-200401000-00009 VO 14 IS 1 A1 T. Yu A1 X. Huang A1 K. Hu A1 J. Bai A1 Z. Wang YR 2004 UL http://ijgc.bmj.com/content/14/1/76.abstract AB The aim of this study was to investigate the reversal of adriamycin resistance in human ovarian cancer cells by ultrasound exposure from perspectives of apoptosis and mdr1 gene. Apoptosis was determined by flow cytometry and mdr1 level by reverse transcription-polymerase chain reaction (RT-PCR). Apoptosis indexes were improved in groups in which ultrasound exposures were applied. RT-PCR did not support that insonation-decreased mdr1 level. These findings suggested that the ultrasound-enhanced therapeutic efficacy was not mediated via modulating gene expression, and ultrasound maybe lowered thresholds for apoptosis and oncosis in chemoresistant ovarian cancer cells.