title: Risk factors for prostatic inflammation extent and infection in benign prostatic hyperplasia.
abstract: OBJECTIVE
  To investigate the risk factors for prostatic inflammation extent and infection in patients with benign prostatic hyperplasia (BPH) so as to manage prostatic inflammation more efficiently.
  
  
  METHODS
  Sixty patients with BPH undergoing TURP between September 2005 and December 2005 in West China Hospital of Sichuan University were studied. Prostate fluid (PF) was collected for the measurement of secretory IgA (SIgA) and complement 3 (C3). Prostate tissue were collected for testing bacterial 16S rDNA by real-time PCR, examining SIgA in the tissue and examining the inflammation. The possible clinical and immune risk factors for prostatic inflammation or infection were analyzed by using the logistic regression method.
  
  
  RESULTS
  Abnormal white blood cell count in urinalysis, prostatic infection and a high concentration of C3 in PF are the risk factors for prostatic inflammation extent (P = 0.025, 0.034 and 0.035, respectively and odds ratio [OR] = 18.269, 8.284 and 1.508, respectively). Risk factors for prostatic infection include the C3 concentration and the concentration of SIgA in PF (P = 0.003 and 0.013, respectively, and OR=1.645 and 0.993, respectively).
  
  
  CONCLUSIONS
  The present study suggests that prostatic inflammation is associated with urinary tract infection, prostatic infection and the activated complement and that prostatic infection is associated with the activated complement and downregulated mucosal immunity in prostates of the patients with BPH. It is also suggested that individual immune regulation should be considered in the treatment of prostatic inflammation and infection of patients with BPH.
authors.affiliation: Department of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan 610041, China.
authors.forename: Fa-Xian
authors.initials: FX
authors.lastname: Yi
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wei
authors.forename: Hong
authors.initials: H
authors.lastname: Li
authors.forename: Xiang
authors.initials: X
authors.lastname: Li
authors.forename: Ming
authors.initials: M
authors.lastname: Shi
authors.forename: Qiang
authors.initials: Q
authors.lastname: Dong
authors.forename: Yu-Ru
authors.initials: YR
authors.lastname: Yang
mesh_terms: D001419:Bacteria / Q000235:genetics / Q000302:isolation & purification; D002681:China; D004275:DNA, Ribosomal / Q000235:genetics; D006801:Humans; D007239:Infections / Q000209:etiology*; D007249:Inflammation / Q000209:etiology*; D007958:Leukocyte Count; D008297:Male; D018579:Patient Selection; D011467:Prostate / Q000503:physiopathology*; D011470:Prostatic Hyperplasia / Q000150:complications / Q000503:physiopathology* / Q000601:surgery; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012044:Regression Analysis; D012307:Risk Factors; D020728:Transurethral Resection of Prostate
chemical_list: D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S