前列腺炎患者前列腺液成分与血清PSA含量的关系

目的 :探讨前列腺炎患者前列腺按摩液 (EPS)中卵磷脂小体及白细胞 (WBC)含量与血清前列腺特异性抗原(PSA)升高之间的关系 ,以及细菌性与非细菌性前列腺炎对血清PSA浓度的影响。　方法 :ELISA法测定 6 2例慢性前列腺炎患者及 2 2例正常人的血清PSA含量。分析EPS中卵磷脂小体及WBC含量与血清PSA升高的相关性 ,并比较细菌性与非细菌性前列腺炎患者平均血清PSA间的差异。　结果 :前列腺炎患者血清PSA含量为 (1.79± 0 .6 8)μg/L ,明显高于对照组的 (0 .6 3± 0 .2 9) μg/L (P <0 .0 0 1)。EPS镜检白细胞含量低的 (+～ ++)与含量高的 (+++～ ++++)两组患者的血清PSA含量比较差异有显著性 (P <0 .0 5 )。卵磷脂小体含量低的 (-～ ++) 35例与含量高的 (+++～ ++++) 2 7例患者的血清PSA含量比较差异无显著性 (P >0 .0 5 )。细菌性与非细菌性炎性前列腺炎患者血清PSA含量比较差异无显著性 (P >0 .0 5 )。　结论 :前列腺炎可以导致血清PSA升高 ,这种升高与EPS中WBC的含量呈正相关 ,与卵磷脂小体的含量无关 ,与前列腺炎类型 (细菌性或非细菌性 )无关。

Correlation between EPS Composition and Elevated Serum PSA in Prostatitis Patients

OBJECTIVE: To explore the correlation between the content of lecithin mass and white blood cells (WBC) of the expressed prostatic secretion (EPS) and the concentration of serum PSA in patients with prostatitis, and to study the difference in serum PSA concentration between patients with bacterial prostatitis and those with nonbacterial prostatitis. METHODS: The serum PSA concentration in 62 patients with prostatitis and 22 controls were measured with ELISA method. The correlation between the content of lecithin mass and WBC of the EPS and the elevation of serum PSA was analyzed. And the serum PSA concentration of bacterial prostatitis (9 patients) and that of nonbacterial inflammatory prostatitis (53 patients) were compared. RESULTS: The mean concentrations of serum PSA in the prostatitis and the control groups were (1.79 +/- 0.68) microg/L and (0.63 +/- 0.29) microg/L, respectively. The difference of the serum PSA concentration was significant between the prostatitis and the control groups (P < 0.001) as well as between the groups with higher and lower WBC contents in EPS (P < 0.05), but not between the groups with higher (27 patients) and lower (35 patients) lecithin mass contents in EPS (P > 0.05), nor between the groups of bacterial prostatitis and nonbacterial prostatitis (P > 0.05). CONCLUSION: Prostatitis may cause the elevation of serum PSA concentration. The elevated serum PSA correlates with the content of white blood cells in EPS, but not with the content of lecithin mass in EPS, nor with the type of prostatitis, either bacterial or nonbacterial.