title: Effects of cyclooxygenase inhibitors on survival time in ovarian cancer xenograft-bearing mice.
abstract: The present study was designed to investigate whether cyclooxygenase (COX) inhibitors (coxibs) could prolong survival time by attenuating the tumor growth of ovarian cancer xenograft-bearing mice. Tumor growth and survival time were observed and compared in mice which were treated with a COX-1 inhibitor (SC-560) and a COX-2 inhibitor (celecoxib) every other day for a 21 day period from the day of tumor formation. The trial lasted a total of 121 days. The combination therapy resulted in statistically significant inhibition of tumor size compared with the control group (P<0.05). Additionally, single treatment of SC-560 or celecoxib significantly prolonged the mean survival time of mice compared with the control group (P<0.05). We suggest that COX-1 and COX-2 inhibitors may improve survival and inhibit tumor growth, and that the tumor growth inhibition by coxibs may be the contributing factor for the prolonged survival time in mouse xenograft models.
authors.affiliation: Department of Gynecology, Nanjing Medical University of Hangzhou Hospital, Hangzhou, Zhejiang 310006,  P.R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Xiao-Li
authors.initials: XL
authors.lastname: Xu
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Jia-Hui
authors.initials: JH
authors.lastname: Cai
authors.forename: Yun-Xian
authors.initials: YX
authors.lastname: Tang