title: Immunohistochemical analysis of Omi/HtrA2 expression in prostate cancer and benign prostatic hyperplasia.
abstract: To study the expression and significance of the serine protease Omi/HtrA2 in prostate cancer and benign prostatic hyperplasia. The expression of Omi/HtrA2 was assayed by means of immunohistochemical technique in 41 prostate cancer (Cap), 20 benign prostatic hyperplasia (BPH) and 10 normal prostate (NP) specimens. Omi/HtrA2 expression was positive in 30 (73.17%) prostate cancer specimens, and the positive rate of Omi/HtrA2 was lower in well differentiated than in poorly and moderately differentiated groups (P < 0.05). By contrast, the cells in normal prostate and benign prostatic hyperplasia groups showed no or weak expression of Omi/HtrA2. Prostate cancer cells in vivo may need Omi/HtrA2 expression for apoptosis, and that Omi/HtrA2 expression might be involved in prostate cancer development.
authors.affiliation: Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
authors.forename: Xiaoyong
authors.initials: X
authors.lastname: Hu
authors.forename: Xiaochun
authors.initials: X
authors.lastname: Chen
authors.forename: Hao
authors.initials: H
authors.lastname: Ping
authors.forename: Zhaohui
authors.initials: Z
authors.lastname: Chen
authors.forename: Fuqing
authors.initials: F
authors.lastname: Zeng
authors.forename: Gongcheng
authors.initials: G
authors.lastname: Lu
mesh_terms: D000328:Adult; D017209:Apoptosis / Q000502:physiology*; D002478:Cells, Cultured; D000074923:High-Temperature Requirement A Serine Peptidase 2; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D024101:Mitochondrial Proteins / Q000032:analysis / Q000096:biosynthesis*; D011470:Prostatic Hyperplasia / Q000378:metabolism* / Q000473:pathology; D011471:Prostatic Neoplasms / Q000378:metabolism* / Q000473:pathology; D012697:Serine Endopeptidases / Q000032:analysis / Q000096:biosynthesis*; D014407:Tumor Cells, Cultured
chemical_list: D024101:Mitochondrial Proteins; D012697:Serine Endopeptidases; C000615914:HTRA2 protein, human; D000074923:High-Temperature Requirement A Serine Peptidase 2