慢性非细菌性前列腺炎患者的前列腺液和前列腺组织中的细菌16SrRNA基因检测

目的:探讨细菌在慢性非细菌性前列腺炎病因中的作用,评估细菌16S核糖体核糖核酸(16SrRNA)基因在前列腺液标本和前列腺组织标本中检出的差异.方法:应用PCR方法检测38例慢性非细菌性前列腺炎患者的前列腺液和前列腺组织中细菌16SrRNA基因,同时对照检测尿道拭子和直肠拭子以及穿刺枪头拭子的细菌16SrRNA基因.结果:细菌16SrRNA基因的检出率在前列腺液中和前列腺组织中分别为 78.9%和81.5%(P＞ 0.05).细菌基因信号在前列腺液标本中和尿道拭子中各有30例( 78.9%)和4例( 10.5%)呈阳性(P＜ 0.01);在前列腺组织中和直肠拭子中各有31例( 81.5%)和6例( 15.8%)呈阳性(P＜ 0.01),无一例穿刺枪头拭子阳性.结论:慢性非细菌性前列腺炎患者的前列腺液和前列腺组织中均有细菌16SrRNA基因的检出,其病因可能与细菌感染有关. 细菌16SrRNA基因的检出在前列腺液标本和前列腺组织标本中差异无统计学意义.     

慢性非细菌性前列腺炎患者前列腺组织中细菌16SrRNA基因和大肠杆菌tufA mRNA基因的检测

目的 探讨细菌感染与慢性非细菌性前列腺炎的相关性。方法 应用PCR方法检测慢性非细菌性前列腺炎患者前列腺组织中的细菌16SrRNA基因，同时用RT-PCR方法检测其中的大肠杆菌tufAmRNA基因。结果 38例慢性非细菌性前列腺炎患者前列腺组织中31例（81．5％）呈细菌16SrRNA基因阳性；在31例细菌16SrRNA基因阳性的患者前列腺组织中，有6例（19．4％）检出大肠杆菌tufAmRNA基因。结论 慢性非细菌性前列腺炎患者的前列腺组织中不仅有细菌的存在，而且部分被证实是活力细菌。细菌在慢性非细菌性前列腺炎的病因中可能起一定的作用。     

CPPS患者前列腺液细菌16SrRNA基因及白细胞数与临床疗效的相关性研究

目的 探讨应用聚合酶链反应(PCR)检测慢性非细菌性前列腺炎(CPPS)患者前列腺液中细菌16SrRNA基因,并常规检查患者前列腺液中白细胞的数目,与CPPS患者的临床治疗效果做相关性分析.方法 以细菌16SrRNA基因为靶序列,设计引物及寡核苷酸探针,采用PCR法检测标准菌株及135例CPPS患者前列腺液中细菌16SrRNA基因,结合患者前列腺液中白细胞的数目进行对比分析.结果 135例CPPS患者中细菌16SrRNA基因检测结果阳性为78例,阳性率为57.78%.细菌16SrRNA基因阳性组患者经抗生素治疗的有效率84.6%,阴性组有效率52.6%;细菌16SrRNA基因阳性组患者疗效明显优于阴性组.按白细胞数分组疗效比较,不同组间疗效没有差异.结论 大部分CPPS患者的前列腺液中可以检测到细菌16SrRNA基因,提示细菌感染在CPPS的发病中有重要作用.但是,其前列腺液中白细胞数目对CPPS患者判断病情、估计预后无统计学意义.     

慢性非细菌性前列腺炎患者前列腺液16SrRNA基因的检测及其临床意义

目的 探讨应用聚合酶链反应（PCR）检测慢性非细菌性前列腺炎（CPPS）患者前列腺液（EPS）中细菌基因,并与CPPS患者的临床治疗效果做相关性分析。方法 以16SrRNA基因为靶序列,设计引物及寡核苷酸探针,采用PCR法检测标准菌株及135例CPPS患者前列腺液中细菌基因。所有CPPS患者均应用抗生素和中成药规范治疗,每2周为1疗程,每2周复查EPS常规1次,必要时适当调整药物。治疗3个月时,进行疗效评估。结果 135例CPPS患者中16SrRNA检测结果阳性为78例,阳性率为57．78％。16SrRNA阳性组患者有效率84．6％,阴性组有效率52．6％;16SrRNA阳性组患者疗效明显优于阴性组。结论 大部分CPPS患者的前列腺液中可以检测到细菌的16SrRNA基因,提示细菌感染在CPPS的发病中有重要作用。     

慢性前列腺炎患者前列腺液16S rDNA检测的临床意义

目的:探讨慢性前列腺炎患者前列腺液16S rDNA检测的临床意义。方法:对116例慢性前列腺炎患者前列腺液采用PCR方法检测其16S rDNA,比较不同亚型前列腺炎的16S rDNA阳性率并分析其相关性。结果:29例Ⅱ型前列腺炎前列腺液16S rDNA PCR均阳性,阳性率100%;87例Ⅲ型前列腺炎前列腺液16S rDNA PCR阳性71例,阳性率82%,其中ⅢA型前列腺炎前列腺液PCR阳性率94%(45/48),ⅢB型前列腺炎前列腺液PCR阳性率67%(26/39)。结论:16S rDNA的检测可能成为慢性前列腺炎分型的一个指标。     

应用多聚酶链反应检测前列腺液中沙眼衣原体

从１９９４年１０月至１９９５年５月对７５例慢性前列腺炎患者应用多聚酶链反应（ＰＣＲ）技术检测其前列腺液中沙眼衣原体，并同时进行对照组的前列腺液检测。结果在前列腺液中沙眼衣原体阳性率为２６．７％，而且均为非细菌性前列腺炎。对照组均为阴性。前列腺按摩前初始尿和尿道脱落上皮细胞ＰＣＲ检测沙眼衣原体结果是前列腺液阳性者，尿及尿道上皮细胞均为阴性。本实验结果不仅表明沙眼衣原体是慢性非细菌性前列腺炎的病原体之一，而且为沙眼衣原体性前列腺炎提供了特异性诊断方法和治疗后监测手段。     

四腔两囊管尿道内注药治疗慢性前列腺炎

1 资料与方法 我院从1995-03/2001-03,通过四腔两囊管经尿道内注射药物治疗慢性前列腺炎20例,年龄22～42(平均30)岁,病史3月～3 a。主要症状:小腹会阴部不适18例,腰骶部痈16倒 尿不尽感13例,尿频、尿痛感8例,性功能障碍2例。全部患者前列腺液化验白细胞均超过10个/Hp,卵磷脂小体均减少,脓球10例,16例为慢性细菌性前列腺炎,前例腺液培养出大肠杆菌8例,葡萄球菌5例,链球菌3例。非细菌性4例。     

早泄病人慢性前列腺炎的发生率调查

目的 :调查早泄男性中慢性前列腺炎的发生率。　方法 :对 10 6例早泄病人和 38例正常人前列腺按摩前后尿液标本及前列腺按摩液 (EPS)进行显微镜和 /或细菌学检查 ,并评估 12 0例慢性前列腺炎病人中早泄的发生率。　结果 :在早泄病人中发现 49例 (46 .2 %)有慢性前列腺炎 ,其中 34 .7%存在慢性细菌性前列腺炎 ,与对照组相比均有统计学差异 (P <0 .0 5 )。 12 0例慢性前列腺炎病人中 5 7例 (47.5 %)存在不同程度的早泄。　结论 :本研究结果提示慢性前列腺炎症在某些早泄病人的发病机制中可能具有一定作用 ,在针对早泄治疗前进行前列腺仔细检查具有重要意义。     

慢性前列腺炎细菌及免疫学研究

目的　了解慢性前列腺炎细菌感染情况 ,提高治疗水平。　方法　对 132例慢性前列腺炎患者行尿及前列腺液细菌五步培养法、药物敏感试验及前列腺液免疫球蛋白IgA和lgG测定 ,并根据药敏试验结果对部分患者进行治疗。　结果　前列腺液细菌培养阳性者 74例 ,其中金黄色葡萄球菌 32例 (耐药金黄色葡萄球菌 5例 ) ,表皮葡萄球菌 17例 ,大肠杆菌 10例 ,其它细菌 15例 ;细菌培养阴性者 5 8例。细菌培养阳性者前列腺液中IgG和IgA分别平均为 1.12 g/L和 0 .32 g/L(n =34 ) ,显著高于细菌培养阴性者 (0 .2 3g/L和 0 .0 2 g/L ,n =37;P =0 .0 31和P =0 .0 36 )。　结论　慢性前列腺炎患者前列腺液细菌培养阳性率较高 (5 6 .1% ) ,以革兰阳性菌多见 (6 6 .2 % ) ,细菌可能来源于女性生殖道。下尿路细菌定位诊断可简化为“两杯法”。前列腺液细菌培养阳性者的前列腺液中免疫球蛋白IgG和IgA水平较高     

PCR-Dot blot在慢性前列腺炎诊断中应用的研究

目的建立基于16SrRNA基因的PCR—Dot blot细菌学检测方法，用于慢性前列腺炎患者EPS的细菌学检查，以指导临床诊断和治疗。方法建立PCR—Dot blot方法，并对实验组58例标本和对照组30例标本进行检测。结果经过优化的PCR方法检测细菌的敏感性达到了10^3／mL。实验组标本PCR检测阳性率46．6％(27／58)，其中包括培养法阳性的4例标本占实验组总数的7．0％(4／58)。对照组标本PCR检测阳性率为10％(3／30)。经过杂交检测实验组标本中20例为G-菌，7例为G 细菌，对照组3例PCR阳性标本都为G 细菌。结论基于16SrRNA基因的PCR—Dot blot方法具有快速、简便、稳定、不受干扰等优点，可用于检测慢性前列腺炎患者的EPS。     

实时PCR法在慢性前列腺炎病原学诊断中的应用研究

目的为研究前列腺细菌感染和慢性前列腺炎之间潜在的关联,本文报告了应用实时PCR方法检测前列腺液(EPS)或按摩前列腺后的尿液(VB3)中的细菌。方法细菌模板DNA取自慢性前列腺炎患者的EPS或VB_3标本。1对通用引物:用于扩增所有已知细菌的核糖体DNA(16SrDNA)。3个荧光探针:一个为检测所有细菌的通用探针(Uniprobe);1个为检测大肠杆菌的特异性探针(Ecprobe);1个为检测金黄色葡萄球菌的特异性探针(SAprobe)。结果应用实时PCR方法检测慢性前列腺炎患者,80个标本中有28个检测到细菌,包括14个为大肠杆菌阳性,6个为金黄色葡萄球菌阳性。结论实时PCR具有能定量、快速、特异等优点,有望成为能对慢性前列腺炎患者EPS或VB_3中的细菌进行定性、定量检测的一种很有前途的方法。     

Isolation of Chlamydia trachomatis from the prostatic cells in patients affected by nonacute abacterial prostatitis

To assess the presence of Chlamydia trachomatis in nonacute abacterial prostatitis 30 patients with urethral cultures positive for Chlamydia trachomatis underwent microbiological studies, including cultures of transrectal aspiration biopsies of the prostate. Chlamydia trachomatis was isolated from 10 of the prostatic specimens (33 per cent). In 3 cases a nonspecific cytopathogenic effect caused the destruction of the tissue cultures. Our findings demonstrate that Chlamydia trachomatis may cause ascending infections of the prostate and that this microorganism may have an etiological role in the pathogenesis of nonacute abacterial prostatitis.     

Oxidative stress in prostatic fluid of patients with chronic pelvic pain syndrome: correlation with gram positive bacterial growth and treatment response

The etiology of chronic pelvic pain syndrome (CPPS)/chronic prostatitis category III remains unknown. Whereas a subset of men respond to antimicrobial therapy, gram positive bacteria isolated from expressed prostatic secretions (EPS) are often considered to be commensal rather than pathogenic. We wished to study oxidative stress as a marker of tissue injury and response in EPS of men with CPPS to determine whether infection with gram positive bacteria is associated with increased oxidative stress. A total of 300 EPS specimens from 100 men with CPPS were collected for microscopy, culture, and biochemical and molecular assays. Oxidant injury was measured by 8-isoprostane F2alpha (IsoP) levels and total antioxidant capacity as Trolox equivalents. Total RNA from EPS was used for gene expression of heme oxygenase-1 (HO-1) and granzyme B. The only bacteria found in EPS were gram positive. For our analysis, these men were classified as having chronic bacterial prostatitis (category II). IsoP levels (pg/mL) were highest in men with category II prostatitis (7315 +/- 1428) followed by nonbacterial prostatitis (category IIIa, 2043 +/- 561), prostatodynia (category IIIb, 319 +/- 81), and asymptomatic controls (298 +/- 99). IsoP levels decreased significantly after successful treatment with antibiotics or an antioxidant supplement (Prosta-Q). Antioxidant capacity was detected in 11 out of 18, 4 out of 16, and 1 out of 16 men tested with category II, IIIa, and IIIb prostatitis, respectively. No correlation was observed between IsoP levels and the number of white blood cells in EPS. HO-1 and granzyme B expression was highest in men with category II prostatitis than in men with either category III prostatitis or asymptomatic controls. On the basis of elevated oxidative stress, clinical response to antibiotics, and post-treatment reduction in oxidative stress, we conclude that gram positive bacteria in some men with CPPS may be pathogens. It is speculated that oxidative stress may be a key pathway in some men with CPPS that can be targeted with antioxidant therapy.     

Cryptic bacterial infection in chronic prostatitis: diagnostic and therapeutic implications

Chronic idiopathic prostatitis, sometimes called prostatodynia or abacterial prostatitis, is a commonly diagnosed and poorly treated urological syndrome. Clinically, this condition frustrates the patient and physician due to its chronicity and resistance to therapy. Recent studies suggest that the etiology of chronic idiopathic prostatitis may be of bacterial origin. Three types of provocative data have demonstrated bacterial presence from prostatic specimens (tissue and secretions) that were negative by traditional clinical microbiologic tests: (i) presence of bacterial gene sequences in prostatic tissue encoding 16S rRNA and tetracycline resistance (tetM-tetO-tetS); (ii) controlled cultural findings showing coagulase-negative staphylococci as the most common isolates (68%) in prostatodynia (chronic idiopathic prostatitis); and (iii) culture of difficult-to-grow coryneforms in expressed prostatic secretions (EPS) on enriched culture media and direct microscopic observation of these pleomorphic bacteria in EPS. Additionally, earlier experimental studies in a rat model support the concept that antibiotic therapy in chronic bacterial prostatitis may not be due to altered antibiotic pharmacokinetics in the chronically inflamed prostate gland. Rather, ineffective antimicrobial eradication might result from protected bacterial micro-colonies within an infection-induced altered micro-environment deep within the prostate gland. We postulate that extracellular slime substances produced by bacteria that are buried in prostatic tissues could impair host defenses by their anti-phagocytic and anti-chemotactic properties that affect neutrophils as well as anti-proliferative characteristics that affect lymphocytes. These extracellular slime substances could also have cytoprotective properties which can conceal bacteria from otherwise bactericidal levels of antibiotics and lead to recrudescent infections resistant to therapy. Persistence of bacterial antigens might initiate a cascade of cellular immunologic events resulting in chronic inflammation of the prostate gland.     

前列腺液16s rDNA检测在慢性前列腺炎诊治中的临床意义

目的探讨前列腺液16s rDNA检测对慢性前列腺炎的临床诊断和治疗意义。方法选择符合美国国立卫生研究院（NIH）诊断标准的Ⅱ型前列腺炎和Ⅲ型前列腺炎患者67例。常规前列腺液镜检和细菌、支原体、衣原体检查，并对前列腺液中的16s rDNA进行PCR检测，治疗全部采用以抗生素为主的综合治疗。以慢性前列腺炎症状指数（NIH-CPSI）为疗效指标，治疗4周后进行疗效比较。结果Ⅱ、ⅢA和ⅢB型前列腺炎16s rDNA阳性率分别为100％（11／11）、62．5％（20／32）、66．7％（16／24）。Ⅱ型前列腺炎治疗显效率100％；在Ⅲ型前列腺炎中，ⅢA、ⅢB组无差异，而16s rDNA阳性组治疗总显效率（80．0％）明显高于16s rDNA阴性组（52．4％）（P〈0．05）。结论前列腺液16s rDNA表达与前列腺炎的疗效有良好的相关性，可作为Ⅲ型前列腺炎选用抗生素治疗的依据，并对前列腺炎分型有一定参考价值。     

慢性前列腺炎/慢性骨盆疼痛综合征患者前列腺液中IFN-γ、TGF-β_1的检测

目的:探讨干扰素γ(IFN-γ)和转化生长因子β1(TGF-β1)在慢性前列腺炎/慢性骨盆疼痛综合征(CP/CPPS)患者前列腺液中的临床意义。方法:采用双抗体夹心法对20例炎症性慢性骨盆疼痛综合征(ⅢA)、20例非炎症性慢性骨盆疼痛综合征(ⅢB)、10例健康对照者前列腺按摩液(EPS)中IFN-γ、TGF-β1含量进行测定。并与患者的美国国立卫生研究院慢性前列腺炎症状指数(NIH-CPSI)进行相关性研究。结果:IFN-γ、TGF-β1在ⅢA[(14.92±7.85)、(8 477.50±4 612.45)ng/L]和ⅢB[(13.74±5.96)、(7 946.50±5 044.06)ng/L]患者EPS中水平均明显高于健康对照组[(7.47±1.49)、(2 462.50±985.31)ng/L](P<0.05和P<0.001)。但在ⅢA和ⅢB之间差异无显著性(P>0.05)。EPS中IFN-γ、TGF-β1的水平与慢性前列腺炎症状指数无相关性(r=0.02,P=0.86;r=0.31,P=0.76)。结论:前列腺液中细胞因子IFNγ-、TGF-β1在CP/CPPS的病理学改变中可能起重要作用,可作为CP/CPPS的诊断依据之一。