title: [Correlation of IL-8 and IL-6 in prostatic fluid with serum prostate-specific antigen level in patients with benign prostatic hyperplasia complicated by prostatitis].
abstract: OBJECTIVE
  To investigate the correlation of the levels of interleukin-8 (IL-8) and IL-6 in the prostatic fluid with serum levels of serum prostate-specific antigen (PSA) in patients with benign prostatic hyperplasia (BPH) complicated by prostatitis.
  
  
  METHODS
  A series of 211 patients undergoing surgery of BPH were divided into BPH group (n=75) and BPH with prostatitis group (n=136) according to the white blood cell count in the prostatic fluid. The clinical and laboratory findings were compared between the two groups, and stepwise regression analysis was used to assess the association of IL-8 and IL-6 with serum PSA level.
  
  
  RESULTS
  No significant differences were found in age, BMI, blood pressure, blood glucose, blood lipids, IPSS score, PSA-Ratio, or prostate volume between the two groups (P<0.05). The patients with prostatitis had significantly increased serum PSA and prostate fluid IL-8 and IL-6 levels compared with those without prostatitis (P<0.001). Multiple linear regression analysis showed that IL-8 and IL-6 levels and white blood cell count in the prostatic fluid were all positively correlated with serum PSA level.
  
  
  CONCLUSIONS
  Prostatitis is an important risk factor for elevated serum PSA level in patients with BPH, and both IL-8 and IL-6 levels in the prostatic fluid are correlated with serum PSA level.
authors.affiliation: Department of Urology, First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, China.E-mail: rwing2013@163.com.
authors.forename: Xingfei
authors.initials: X
authors.lastname: Ren
authors.forename: Chunlei
authors.initials: C
authors.lastname: Wu
authors.forename: Qinnan
authors.initials: Q
authors.lastname: Yu
authors.forename: Feng
authors.initials: F
authors.lastname: Zhu
authors.forename: Pei
authors.initials: P
authors.lastname: Liu
authors.forename: Huiqing
authors.initials: H
authors.lastname: Zhang
mesh_terms: D001826:Body Fluids / Q000737:chemistry; D006801:Humans; D015850:Interleukin-6 / Q000737:chemistry*; D016209:Interleukin-8 / Q000737:chemistry*; D007958:Leukocyte Count; D008297:Male; D017430:Prostate-Specific Antigen / Q000097:blood*; D011470:Prostatic Hyperplasia / Q000150:complications / Q000175:diagnosis*; D011472:Prostatitis / Q000150:complications / Q000175:diagnosis*; D012044:Regression Analysis; D012307:Risk Factors
chemical_list: C508606:CXCL8 protein, human; C508600:IL6 protein, human; D015850:Interleukin-6; D016209:Interleukin-8; D017430:Prostate-Specific Antigen