title: NicotinamideN-methyltransferase is overexpressed in prostate cancer and correlates with prolonged progression-free and overall survival times.
abstract: NicotinamideN-methyltransferase (NNMT) has been identified to be associated with tumorigenesis and the malignant transformation of numerous types of cancer. The aim of the present study was to explore the expression and prognostic significance of NNMT in prostate cancer (PCa). Immunohistochemical NNMT expression was examined in 26 cases of benign prostate hyperplasia (BPH), 18 cases of high-grade prostatic intraepithelial neoplasia (HGPIN) and 120 cases of PCa. While rarely expressed in BPH (8/26 cases; 30.8%), NNMT was found to be significantly upregulated in HGPIN (15/18 cases; 83.3%) and PCa (77/120 cases; 64.2%). Clinicopathological analysis revealed that NNMT expression was negatively correlated with Gleason score (P<0.001). Furthermore, Kaplan-Meier survival curves revealed that high NNMT expression was associated with prolonged progression-free survival (PFS) and overall survival (OS) times in patients with advanced PCa. Multivariate analysis showed that NNMT was an independent prognostic marker of PFS and OS in patients with advanced PCa. The results of the present study suggested that NNMT may contribute to the development of PCa and may potentially be a favorable prognostic marker for the survival of patients with advanced PCa.
authors.affiliation: Department of Urology, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China.
authors.forename: Weimin
authors.initials: W
authors.lastname: Zhou
authors.affiliation: Department of Nephrology, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China.
authors.forename: Ming
authors.initials: M
authors.lastname: Gui
authors.affiliation: Molecular Biology Research Center, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China.
authors.forename: Min
authors.initials: M
authors.lastname: Zhu
authors.affiliation: Department of Urology, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Long
authors.affiliation: Center for Medical Experiments, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China.
authors.forename: Lihua
authors.initials: L
authors.lastname: Huang
authors.affiliation: Center for Medical Experiments, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Department of Urology, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China.
authors.forename: Leye
authors.initials: L
authors.lastname: He
authors.affiliation: Department of Urology, Third Xiangya Hospital, Central South University, Changsha, Hunan 410013, P.R. China.
authors.forename: Kuangbiao
authors.initials: K
authors.lastname: Zhong
keywords: immunohistochemistry; nicotinamide N-methyltransferase; prognosis; prostate cancer