title: Expression of cyclooxygenase-2 in prostate adenocarcinoma and benign prostatic hyperplasia.
abstract: Elevated expression of cyclo-oxygenase (COX)-2 has been found in several human cancers, including prostate adenocarcinoma. To evaluate the potential prognostic role of COX-2 in prostate cancer, we assessed the expression of COX-2 in benign prostatic hyperplasia (BPH) and prostate cancer samples employing immunohistochemistry. COX-2 was over-expressed in 15 out of 18 (83%) prostate cancer samples whereas it was detected in only 22% (4 of 18) paired benign tissues. The intensity of immunostaining correlated with the tumor grading. In addition, COX-2 was expressed in 7 of the 22 (32%) BPH samples examined. The significance a COX-2 expression in the BPH samples is not known at present. This data suggest that COX-2 is over-expressed in prostate cancer and COX-2 inhibitors may be useful in combination chemotherapy or chemoprevention for prostate cancer.
authors.affiliation: Department of Urology, Taipei Medical University-Affiliated Taipei Municipal Wan-Fang Hospital, Taiwan, Republic of China.
authors.forename: L M
authors.initials: LM
authors.lastname: Lee
authors.forename: C C
authors.initials: CC
authors.lastname: Pan
authors.forename: C J
authors.initials: CJ
authors.lastname: Cheng
authors.forename: C W
authors.initials: CW
authors.lastname: Chi
authors.forename: T Y
authors.initials: TY
authors.lastname: Liu
mesh_terms: D000230:Adenocarcinoma / Q000201:enzymology* / Q000473:pathology; D000368:Aged; D000369:Aged, 80 and over; D051546:Cyclooxygenase 2; D006801:Humans; D007527:Isoenzymes / Q000096:biosynthesis*; D008297:Male; D008565:Membrane Proteins; D008875:Middle Aged; D011451:Prostaglandin-Endoperoxide Synthases / Q000096:biosynthesis*; D011470:Prostatic Hyperplasia / Q000201:enzymology* / Q000473:pathology; D011471:Prostatic Neoplasms / Q000201:enzymology* / Q000473:pathology
chemical_list: D007527:Isoenzymes; D008565:Membrane Proteins; D051546:Cyclooxygenase 2; C496540:PTGS2 protein, human; D011451:Prostaglandin-Endoperoxide Synthases