title: Heat-shock protein 70 expression in the seminal plasma of patients with chronic bacterial prostatitis and chronic prostatitis/chronic pelvic pain syndrome.
abstract: The purpose of this study was to assess the diagnostic value and potentially protective capacity of heat-shock protein 70 (HSP70) in chronic bacterial prostatitis and chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS). In this study, seminal plasma levels of cytokines (tumor necrosis factor-α (TNF-α) and interleukin 1β (IL-1β)) and HSP70 were evaluated by enzyme-linked immunosorbent assay in 80 men: 15 healthy controls, 16 men with chronic bacterial prostatitis, 23 men with CP/CPPS IIIA and 26 with CP/CPPS IIIB. The HSP70 levels in chronic bacterial prostatitis and CP/CPPS patients were correlated with chronic prostatitis symptom index (CPSI). Significantly increased levels of cytokines (TNF-α and IL-1β) and HSP70 were observed in seminal plasmas from patients with chronic bacterial prostatitis compared with CP/CPPS patients and controls. However, only IL-1β was significantly elevated compared with CP/CPPS IIIB and controls in patients with CP/CPPS IIIA. HSP70 levels in CP/CPPS patients were significantly lower than that in controls. HSP70 concentration in seminal plasma was negatively correlated with CPSI in chronic bacterial prostatitis. The results indicated that HSP70 and IL-1β appear to be the most reliable and predictive surrogate markers to diagnose chronic bacterial prostatitis and CP/CPPS, respectively. HSP70 has an important protective role in the regulation of cell functions in chronic bacterial prostatitis. CP/CPPS would probably be detrimental to the ability of T cells and consequently suppress the expression of HSP70.
authors.affiliation: Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiaotong University, Shanghai, China.
authors.forename: H
authors.initials: H
authors.lastname: Guo
authors.forename: Y-M
authors.initials: YM
authors.lastname: Xu
authors.forename: Z-Q
authors.initials: ZQ
authors.lastname: Ye
authors.forename: J-H
authors.initials: JH
authors.lastname: Yu
authors.forename: Q
authors.initials: Q
authors.lastname: Fu
authors.forename: Y-L
authors.initials: YL
authors.lastname: Sa
authors.forename: X-Y
authors.initials: XY
authors.lastname: Hu
authors.forename: L-J
authors.initials: LJ
authors.lastname: Song
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D002908:Chronic Disease; D018840:HSP70 Heat-Shock Proteins / Q000032:analysis / Q000378:metabolism*; D006801:Humans; D053583:Interleukin-1beta / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D017699:Pelvic Pain / Q000150:complications / Q000378:metabolism*; D011472:Prostatitis / Q000150:complications / Q000378:metabolism*; D012661:Semen / Q000378:metabolism*; D013577:Syndrome; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism; D055815:Young Adult
chemical_list: D018840:HSP70 Heat-Shock Proteins; D053583:Interleukin-1beta; D014409:Tumor Necrosis Factor-alpha