Bcl-xl和Caspase-3在前列腺癌组织中的表达及其相关性研究

目的:研究前列腺癌(PCa)、良性前列腺增生(BPH)组织中凋亡相关蛋白Bcl-xl的表达情况;通过检测Caspase-3蛋白在PCa、BPH组织中的表达,分析两者相关性。方法:用免疫组化法检测20例BPH和35例不同病理分级的PCa组织切片Bcl-xl、Caspase-3蛋白的表达,并分析两者间的相关性。结果:BPH组、PCa组Bcl-xl阳性表达率分别为45.0%、88.6%;BPH组、PCa组Caspase-3阳性表达率为60.0%、17.1%,差异有显著性(P0.05)。PCa组织中Bcl-xl、Caspase-3蛋白的表达与患者术前PSA、是否有远处转移、Gleason评分、临床分期等临床资料无关(P0.05)。在PCa组织中Bcl-xl的表达与Caspase-3的表达呈负相关(rs=-0.748,P0.05)。结论:PCa组织中Bcl-xl高表达,Caspase-3低表达;Bcl-xl和Caspase-3在细胞凋亡过程中可能互相影响。     

8q24 rs1447295基因多态性与不同族群前列腺癌易感性的Meta分析

目的通过Meta分析系统评价8q24染色体rs1447295基因多态性与不同族群前列腺癌(prostate cancer,PCa)患病风险的相关性。方法检索万方、中国知网、PubMed、Science Direct、Web of Science、Wiley Online Library和中国生物医学文献数据库中涉及8q24 rs1447295基因多态性和PCa易感性的病例-对照研究。2位独立研究者按标准筛选文献,运用Cochrane工具及Stata 15.0软件行Meta分析,计算OR值、95%CI并进行偏倚风险评价。结果最终纳入相关文献36篇,涉及研究41项,包含25715例PCa患者和27018例健康对照者。结果显示,在5类基因模型中,等位基因模型、显性遗传模型、隐性遗传模型、纯合子遗传模型与杂合子基因模型显示8q24 rs1447295基因多态性均与PCa易感性之间存在显著相关性,差异有统计学意义(P<0.05)。进一步亚组分析显示,在高加索人种和亚洲人种中,8q24 rs1447295基因多态性与PCa易感性相关,且差异均有统计学意义(P<0.05),在非裔和拉美裔群体中未显示有统计学关联。结论8q24染色体rs1447295基因多态性与PCa患病风险有关,该相关性在高加索人种和亚洲人种中较为显著,在非裔和拉美裔群体关联性无显著差异。     

整合素α6、β-微精浆蛋白基因和染色体8q24区与前列腺癌的关联研究

目的 探讨整合素α6(ITGA6)基因(rs12621278,G)、染色体8q24区(rs10086908,T)和β-微精浆蛋白(MSMB)基因(rs10993994,T)与北京市居民中前列腺癌(PCa)的关联,了解PCa患者基因型和表型的关系.方法 收集112例PCa患者临床、遗传、膳食习惯、嗜好等表型,对PCa患者和91名正常对照者的ITGA6基因(rs12621278,G)、染色体8q24区(rs10086908,T)和MSMB基因(rs10993994,T)进行比较,并进行病例组的基因型-表型分析.结果 2组间相比,MSMB基因rs10993994,T风险等位基因频率差异有统计学意义(病例组56.4%,对照组46.2%;P=0.001,OR=1.97,95%CI为1.28～3.04).8q24区的rs10086908,T(病例组83.5%,对照组79.2%)和ITGA6基因的rs12621278,G(病例组27.2%,对照组27.0%)组间差异无统计学意义(P＞0.05).数量性状分析发现ITGA6风险基因型(G/G)的患者病程为(1.40±0.55)年,显著短于A/G型的(4.38±3.10)年和A/A型的(2.37±1.84)年(P=0.003).结论 MSMB基因变异和PCa易感性之间存在相关性,提示MSMB基因可能与PCa有关联.

Abstract：

Objective To explore the correlation between ITGA6 gene (rs12621278, G), MSMB gene (rs10993994, T), chromosome 8q24 (rs10086908, T) and prostate cancer (PCa) in Beijing residents, and to explore the correlation between genotype and phenotype in PCa patients. Methods PCa patient phenotypes were collected including clinical, genetic, dietary habits, hobbies and blood samples. ITGA6 gene (rs12621278, G), chromosome 8q24 (rs10086908, T) and MSMB gene (rs10993994, T) compared the allele distribution between 112 PCa and 91 healthy control age matched patients. The genotype and phenotype analysis was conducted in the 2 groups. Results Between the case and control groups, only rs10993994, T of MSMB gene (case 56.4%,control 46.2%) was significantly different (P=0.001; OR=1.97, 95%CI:1.28-3.04). The rs10086908, T of 8q24 (case 83.5%, control 79.2%) and rs12621278, G of ITGA6 gene (case 27.2%, control 27.0%) were not significantly associated with PCa in the study sample (P>0.05). Quantitative trait analysis showed that the disease duration of ITGA6 risk genotypes (G/G,1.40±0.55 years) in PCa patients was significantly shorter (P=0.003) than the other genotype carriers (A/G, 4.38±3.10 years; A/A, 2.37±1.84 years). Conclusion The genetic variation in MSMB is possibly associated with PCa susceptibility, suggesting that MSMB genes might be associated with PCa in a Chinese population.     

DD3和PSA基因在前列腺癌组织中的定量表达分析

目的探讨DD3 mRNA和PSA mRNA在前列腺组织中表达的临床意义及诊断前列腺癌(PCa)的价值。方法荧光定量RT—PCR法分析21例PCa组织、39例良性前列腺增生(BPH)组织DD3 mRNA和PSA mRNA的表达,ROC曲线对DD3 mRNA、PSA mRNA和DD3 mRNA／PSA mRNA比值诊断PCa的价值进行分析。结果PCa组织中DD3 mRNA、PSA mRNA表达量和DD3 mRNA／PSA mRNA比值均显著高于BPH组织,差异有统计学意义(P<0．01)。不同临床分期和分化程度之间DD3 mRNA、PSA mRNA和DD3 mRNA／PSA mRNA比值差异无统计学意义(P值均>0．05)。ROC曲线分析结果显示,DD3 mRNA、PSA mRNA和DD3 mRNA／PSA mRNA的曲线下面积分别为0．937、0．755和0．839。当DD3 mRNA、PSA mRNA和DD3 mRNA／PSA mRNA临界值分别为1．4×105拷贝／mg组织、3．0×107拷贝／mg组织和5．0×10-3时,敏感性分别为90．5％、81．0％和81．0％,特异性分别为85．0％、62．0％和66．7％。若将DD3 mRNA和PSA mRNA联合用于PCa的诊断,其特异性与DD3 mRNA相同,为85．0％,敏感性可达100．0％。结论PCa组织中DD3 mRNA和PSA mRNA表达量均增加,但组织中DD3 mRNA的定量检测更具诊断价值,联合检测有利于提高诊断敏感性,对PCa的诊断具有一定临床应用价值。     

前列腺癌发生风险与CYP3A5基因多态性的关系

目的 探讨CYP3A5基因多态性与前列腺癌发生风险和病理特点的关系。方法 采用限制性片段多态性分析法对356例前列腺癌患者和306个男性对照中CYP3A5基因第3内含子多态性进行了研究。结果 在前列腺癌和对照组之间CYP3A5基因型分布差异无显著性(P=0．063)，但两组间CYP3A5*1等位基因的分布差异存在显著性(P=0．025)；与携带CYP3A5*3*3基因型者相比，携带CYP3A5*1等位基因的男性患前列腺癌的风险降低了30％(P=0．026)。在不同分期和分级的前列腺癌患者之间CYP3A5基因型分布差异无显著性(P=0．904和0．986)。结论 CYP3A5基因中的CYP3A5*1等位基因可能与前列腺癌的患病风险降低有关。     

睾酮5-α还原酶Ⅱ基因V89L多态性与前列腺癌预后关系的研究

目的:探讨睾酮5-α还原酶Ⅱ(SRD5A2)基因V89L多态性与影响前列腺癌预后因素的关系。方法:对V89L多态性位点用Rsa-1限制性内切酶进行酶切鉴定,观察112例前列腺癌患者和89例BPH患者的V89L(VV、VL、LL)多态性分布情况的差异及其多态性与前列腺癌患者年龄、前列腺特异性抗原(PSA)、游离PSA/总PSA值(tPSA/fPSA,F/T)、Gleason评分、临床分期的关系。结果:前列腺癌组112例与BPH组89例的V89L基因频度风险无显著性差异(χ2=3.606,df=2,P=0.165)。前列腺癌组VV和VL+LL基因型与fPSA、tPSA、F/T、T分期、Gleason评分差异无显著性(P>0.05)。VV和VL+LL各评价预后指标差异无显著性(P>0.05)。分段评价PSA水平、Gleason评分、临床分期、年龄,均与两种基因型无相关性(P>0.05)。结论:V89L多态性与预后无明显关系,但是可能与前列腺癌的风险存在间接的关系。     

Ki67在预测前列腺癌预后中的作用

目的:探讨前列腺癌(PCa)患者预后影响因素及Ki67在预后中的作用。方法:收集2008年1月至2014年12月经宁夏医科大学总医院病理确诊为PCa的患者共计141例,并对所有患者的预后进行随访,选择年龄、PSA、Gleason评分、临床分期、Ki67可能影响PCa患者预后的因素进行分析;采用Kaplan-Meier方法进行单因素分析,Cox比例风险回归模型进行多因素分析,包含乘积项的Cox比例风险回归模型进行交互作用分析。结果:Kaplan-Meier单因素分析显示Ki67(χ~2=38.507,P0.01)、临床分期(χ~2=59.486,P0.01)、Gleason评分(χ~2=9.062,P0.05)是影响PCa患者预后的主要因素;Cox多因素分析显示Ki67(HR=1.88,P0.01)和临床分期(HR=1.92,P0.01)属于影响PCa患者预后的危险因素;交互作用分析显示,Ki67与临床分期、Ki67与Gleason评分不存在交互作用。结论:Ki67可作为PCa患者预后的危险因素。     

睾酮5-α还原酶Ⅱ基因多态性与影响前列腺癌预后因素关系的研究

目的探讨睾酮5-α还原酶Ⅱ(SRD5A2)基因多态性与影响前列腺癌预后因素的关系。方法对112例前列腺癌患者(前列腺癌组)与89例前列腺增生患者(前列腺增生组)的SRD5A2基因89密码子亮氨酸替代缬氨酸(V89L)及49密码子苏氨酸替代丙氨酸(A49T)多态性位点进行酶切鉴定,了解V89L及A49T基因多态性分布情况的差异,及基因多态性与前列腺癌患者的年龄、血游离前列腺特异抗原(PSA)、总PSA、游离PSA／总PSA值、Gleason评分、临床分期的关系。结果前列腺癌组与前列腺增生组V89L和A49T基因频度风险无显著性差异(分别为0.040与0.045,0.308与0.399,x2值为0.047、3.606,P均>0.05)。前列腺癌组AT TT基因型患者的发病年龄[(65±9)岁]明显低于AA基因型者[(71±7)岁](P=0.03),Gleason评分平均水平明显高于AA基因型(P=0.015)。VV和VL LL基因型各评价预后指标差异无显著性。分段评价PSA水平、Gleason评分、临床分期、年龄,均与两种基因型无相关性。结论AT TT基因型前列腺癌患者的预后可能较差,VL LL基因型与预后无明显关系。     

三叶因子1和3在前列腺癌及前列腺上皮内瘤中的表达及临床意义

目的:探讨三叶因子1(TFF1)及三叶因子3(TFF3)在前列腺癌(PCa)及前列腺上皮内瘤(PIN)中的表达及其临床意义。方法:采用免疫组化法检测89例前列腺癌(PCa)、50例PIN及65例癌旁良性前列腺增生(BPH)组织中TFF1及TFF3的表达情况。结果:TFF1和TFF3在PCa和PIN中的阳性表达率分别为77.53%、48.31%和66.00%、30.00%,显著高于癌旁BPH组织中表达率(分别为49.23%和13.85%,P0.05),TFF1与PCa Gleason评分无关(P0.05),TFF3在Gleason评分≤7分PCa组中阳性率(70.00%)高于Gleason评分7分组(42.03%),差异有统计学意义(P0.05)。TFF1和TFF3在PCa中的表达无相关性(P0.05)。结论:TFF1和TFF3可能与PCa的发生有关,并对PCa可能起促进作用,两者有望成为PCa的诊断、鉴别诊断及预后的检测指标。     

胰腺癌易感性与X射线损伤修复交叉互补基因基因多态性联合吸烟的关系

目的 观察X射线损伤修复交叉互补基因(XRCC1)基因多态性与吸烟的交互作用对胰腺癌易感性的影响.方法 对210例胰腺癌患者和213例对照者提取外周血DNA,应用SNaPshot技术对XRCC1基因7个单核苷酸多态性(SNP)位点进行基因分型,比较不同基因型联合吸烟与胰腺癌易感性的关系.结果 胰腺癌患者rs25487位点A等位基因频率高于对照(P＜0.05);携带突变等位基因A(GA、AA或GA +AA)的个体发生胰腺癌的风险增高(P＜0.05);携带突变等位基因A(GA+ AA)且累积吸烟量≥20包/年的个体胰腺癌的发病风险增高了1.718倍(P＜0.05).胰腺癌患者rs1799782位点T等位基因频率高于对照(P＜0.05);携带突变等位基因T(CT、TT或CT +TT)的个体胰腺癌的发病风险增高(P＜0.05);携带突变等位基因T(CT+ TT)且累积吸烟量≥20包/年的个体胰腺癌的发病风险增高了1.905倍(P＜0.05).结论 XRCC1基因rs25487、rs1799782位点的SNP可能与胰腺癌相关,其多态性联合吸烟对胰腺癌的发病风险有一定影响.     

Clinical Significance of Tumor Necrosis Factor Receptor Superfamily Member 11b Polymorphism in Prostate Cancer

Background

Bone metastases are the most critical complication of prostate cancer (PCa), resulting in severe morbidity and mortality. Tumor necrosis factor receptor superfamily member 11b (TNFRSF11B) is a critical regulator between PCa cells and the bone environment. Recently, TNFRSF11B rs10505346 has been implicated in PCa risk in the Cancer Genetic Markers of Susceptibility genomewide association study. However, the association between this variant and biochemical failure in PCa patients receiving radical prostatectomy (RP) has not been determined.

Methods

Associations of TNFRSF11B rs10505346 with age at diagnosis, preoperative prostate-specific antigen (PSA) level, Gleason score, pathologic stage, surgical margin, and PSA recurrence were evaluated in a cohort of 314 localized PCa patients receiving RP. The prognostic significance on PSA recurrence was assessed by Kaplan–Meier analysis and Cox regression model.

Results

The mean level of preoperative PSA and the relative risks of PSA recurrence after RP were lower in individuals with T allele than in those with the G allele at TNFRSF11B rs10505346 (P = 0.019 and 0.014, respectively). The T allele of rs10505346 remained a protective factor against PSA recurrence (P = 0.022) in multivariate Cox regression model after considering all clinicopathological risk factors except PSA level.

Conclusions

Our data suggest that TNFRSF11B rs10505346 is associated with PSA level and might be a prognostic factor for the recurrence of PSA in PCa patients receiving RP.     

Mcl-1和Caspase-3在前列腺癌患者中的表达和意义及相关性分析

目的 观察Mcl-1和Caspase-3在前列腺癌（PCa）、良性前列腺增生（BPH）组织中的表达情况,探讨两者相关性及意义。方法 采用免疫组化法检测并比较分析30例BPH和35例不同病理分级的PCa组织切片Mcl-1、Caspase-3蛋白的表达。结果 PCa组Mcl-1阳性表达率为82.86%（29/35）,显著高于BPH组13.33%（4/30,P<0.05）;PCa组Caspase-3阳性表达率为25.71%（9/35）,显著低于BPH组73.33%（22/30）（P<0.05）。Mcl-1、Caspase-3蛋白的表达与PCa患者术前PSA值、有无远处转移、Gleason评分、临床分期等临床资料无关(P>0.05)。在PCa组织中Mcl-1的表达与Caspase-3的表达呈负相关（r_s=-0.748,P<0.05）。结论Mcl-1、Caspase-3在PCa的发生、发展中可能相互影响。     

Insulin-like growth factor (IgF)-I,IgF binding protein-3, and prostate cancer: correlation with gleason score

Introduction

Non-androgenic growth factors are involved in the growth regulation of prostate cancer (PCa).

Objective

This is the first Brazilian study to correlate, in a population of patients operated for PCa, PSA, total testosterone, insulin-like growth factor-I (IGF-I) and insulin-like growth factor-binding protein-3 (IGFBP-3) with Gleason score and to compare with a control group with benign prostate hyperplasia (BPH).

Materials and Methods

This retrospective single-center study included 49 men with previously diagnosed PCa and 45 with previously diagnosed BPH. PSA, testosterone, IGF-I, IGFBP-3 were determined in both groups.

Results

PSA and IGFBP-3 levels were significantly higher in the PCa group as compared to the BPH group (p<0.001 and p=0.004, respectively). There was a significant difference when we compared the PSA before surgery (p<0.001) and at the inclusion in the study (p<0.001) and IGFBP3 (0.016) among patients with Gleason <7, ≥7 and BPH. In the PCa group, PSA, testosterone, IGF-I and IGFBP-3 levels were comparable between Gleason <7 and ≥7.

Conclusions

Our data suggest that in localized PCa, the quantification of PSA and, not of IGF-1, may provide independent significant information in the aggressiveness. IGFBP-3 could be a biochemical marker of disease control in PCa patients.     

1667例汉族前列腺癌人群前列腺癌易感性基因多态性验证分析

目的:前列腺癌在工业化国家发病率居男性恶性肿瘤首位,在我国前列腺癌近年发病率不断上升,成为泌尿系统常见恶性肿瘤。本文通过前列腺癌基因多态性分析研究汉族人群前列腺癌易感性危险位点。方法:取1 667例前列腺癌患者与1 525例对照组外周血样双盲利用Sequenom技术进行40个前列腺癌危险位点的SNP分析。结果:40个公认的前列腺癌位点检测结果有16个位点与前列腺癌明显相关(P<0.05);同时发现在不同人种中位于8q24的1、2、5位点与10q11的MSMB编码区及22q13.2编码TTLL1/BIK区域共同决定前列腺癌易感性。结论:汉族前列腺癌人群前列腺癌基因多态性分析结果显示:rs1465618、rs721048、rs12621278、rs7679673、rs12653946、rs339331、rs1512268、rs10086908、rs16901979、rs1447295、rs10993994、rs10896449、rs902774、rs9600079、rs11649743、rs5759167与前列腺癌易感性明显相关。     

MiR-30b-3p and miR-126-3p of urinary extracellular vesicles could be new biomarkers for prostate cancer

BackgroundExtracellular vesicles (EVs) including exosomes are present in blood, urine, and saliva and contain proteins, microRNAs, and messenger RNAs. We investigated microRNAs in urinary EVs to discover new biomarkers of prostate cancer (PCa).MethodsWe isolated EVs from urine obtained following digital rectal examination (DRE) of 14 men with elevated levels of serum prostate-specific antigen (PSA) [negative biopsy (n=4) and PCa with Gleason scores of 6 (n=3), 7 (n=3), and 8–9 (n=4)]. MicroRNAs extracted from EVs were analyzed by microRNA microarray.ResultsMicroRNAs miR-30b-3p and miR-126-3p were identified as being overexpressed in urinary EVs of the PCa patients versus the biopsy-negative men, but no microRNAs were associated with the Gleason score. In the independent cohort as well, these two microRNAs were overexpressed in urinary EVs from the PCa patients versus the negative-biopsy men. Logistic regression analysis adjusted by age and PSA showed that these two microRNAs were significantly associated with the prediction of PCa in biopsy specimens. Sensitivity and specificity of miR-30b-3p and miR-126-3p for the prediction of PCa were 46.4% and 88.0% and 60.7% and 80.0%, respectively, which were better than those of serum PSA (53.5% and 64.0%, respectively).ConclusionsMiR-30b-3p and miR-126-3p in urinary EVs could be potential biomarkers of PCa.     

Analysis of expanded criteria to select candidates for active surveillance of low-risk prostate cancer

We aimed to analyze the value of each criterion for clinically insignificant prostate cancer (PCa) in the selection of men for active surveillance (AS) of low-risk PCa. We identified 532 men who were treated with radical prostatectomy from 2006 to 2013 who met 4 or all 5 of the criteria for clinically insignificant PCa (clinical stage ≤ T1, prostate specific antigen [PSA] density ≤ 0.15, biopsy Gleason score ≤ 6, number of positive biopsy cores ≤ 2, and no core with > 50% involvement) and analyzed their pathologic and biochemical outcomes. Patients who met all 5 criteria for clinically insignificant PCa were designated as group A (n = 172), and those who met 4 of 5 criteria were designated as group B (n = 360). The association of each criterion with adverse pathologic features was assessed via logistic regression analyses. Comparison of group A and B and also logistic regression analyses showed that PSA density > 0.15 ng ml⁻¹ and high (≥7) biopsy Gleason score were associated with adverse pathologic features. Higher (> T1c) clinical stage was not associated with any adverse pathologic features. Although ≤ 3 positive cores were not associated with any adverse pathology, ≥4 positive cores were associated with higher risk of extracapsular extension. Among potential candidates for AS, PSA density > 0.15 ng ml⁻¹ and biopsy Gleason score > 6 pose significantly higher risks of harboring more aggressive disease. The eligibility criteria for AS may be expanded to include men with clinical stage T2 tumor and 3 positive cores.     

Prostate Cancer (PCa) Risk Variants and Risk of Fatal PCa in the National Cancer Institute Breast and Prostate Cancer Cohort Consortium

Background

Screening and diagnosis of prostate cancer (PCa) is hampered by an inability to predict who has the potential to develop fatal disease and who has indolent cancer. Studies have identified multiple genetic risk loci for PCa incidence, but it is unknown whether they could be used as biomarkers for PCa-specific mortality (PCSM).

Objective

To examine the association of 47 established PCa risk single-nucleotide polymorphisms (SNPs) with PCSM.

Design, setting, and participants

We included 10 487 men who had PCa and 11 024 controls, with a median follow-up of 8.3 yr, during which 1053 PCa deaths occurred.

Outcome measurements and statistical analysis

The main outcome was PCSM. The risk allele was defined as the allele associated with an increased risk for PCa in the literature. We used Cox proportional hazards regression to calculate the hazard ratios of each SNP with time to progression to PCSM after diagnosis. We also used logistic regression to calculate odds ratios for each risk SNP, comparing fatal PCa cases to controls.

Results and limitations

Among the cases, we found that 8 of the 47 SNPs were significantly associated (p < 0.05) with time to PCSM. The risk allele of rs11672691 (intergenic) was associated with an increased risk for PCSM, while 7 SNPs had risk alleles inversely associated (rs13385191 [C2orf43], rs17021918 [PDLIM5], rs10486567 [JAZF1], rs6465657 [LMTK2], rs7127900 (intergenic), rs2735839 [KLK3], rs10993994 [MSMB], rs13385191 [C2orf43]). In the case-control analysis, 22 SNPs were associated (p < 0.05) with the risk of fatal PCa, but most did not differentiate between fatal and nonfatal PCa. Rs11672691 and rs10993994 were associated with both fatal and nonfatal PCa, while rs6465657, rs7127900, rs2735839, and rs13385191 were associated with nonfatal PCa only.

Conclusions

Eight established risk loci were associated with progression to PCSM after diagnosis. Twenty-two SNPs were associated with fatal PCa incidence, but most did not differentiate between fatal and nonfatal PCa. The relatively small magnitudes of the associations do not translate well into risk prediction, but these findings merit further follow-up, because they may yield important clues about the complex biology of fatal PCa.

Patient summary

In this report, we assessed whether established PCa risk variants could predict PCSM. We found eight risk variants associated with PCSM: One predicted an increased risk of PCSM, while seven were associated with decreased risk. Larger studies that focus on fatal PCa are needed to identify more markers that could aid prediction.     

Which men with non-malignant pathology at magnetic resonance imaging-targeted prostate biopsy and persistent PI-RADS 3-5 lesions should repeat biopsy?

PurposeTo assess predictors of clinically significant (cs) prostate cancer (PCa) in men who had a non-malignant Multiparametric magnetic resonance imaging (mpMRI)-targeted biopsy and persistent Prostate Imaging-Reporting Data System (PI-RADS) 3 to 5 lesions in subsequent mpMRI.Materials and MethodsWe retrospectively analyzed MRI-targeted biopsy database in three centers. Inclusion criteria: persistence of at least one PI-RADS ≥3 lesion found negative for cancer in a previous MRI-targeted plus systemic biopsy (baseline biopsy). Exclusion criteria: downgrading to PI-RADS 1-2. A logistic regression analysis was performed to estimate the predictors of csPCa.ResultsFifty-seven patients were included. Median interval between biopsies was 12.9(2.43) months. Median age was 68.0(12) years. Median PSA was 7.0(5.45) ng/ml. At follow-up, 24.6%, 54.4%, and 21% of patients had a PI-RADS score 3, 4, and 5 index lesion (IL), respectively. At re-biopsy, 28/57(49.1%) men were found to harbor PCa. Among these, 22(78.6%) had csPCa. csPCa was found outside the IL in only 2 patients. Eleven, 13, and 5 patients with PI-RADS 3, 4, and 5, respectively, had no cancer. Three patients with a PI-RADS 3 lesion had cancer (2 with Gleason score 3+3, 1 with Gleason score 3+4). 14/43 men with a PI-RADS 4/5 lesion harbored Gleason score ≥3+4 PCa. Logistic regression analysis found that PSA (HR 1.281, 95% CI: 1.013–1.619, P = 0.039) and IL size (HR 1.146, 95% CI: 1.018–1.268, P = 0.041) were the predictors of csPCa at re-biopsy.ConclusionsPatients with non-malignant pathology from PI-RADS ≥3 lesions targeted biopsy should be follow-up with mpMRI, and those with persistent PI-RADS 4 to 5 lesions should repeat MRI-targeted and systematic biopsy.     

＂诊断性＂TURP在BPH伴血清PSA异常患者中的应用价值

目的：探讨“诊断性”TURP在BPH伴血清PSA异常患者中的应用价值及意义。方法：对BPH伴血清PSA异常患者行“诊断性”TURP,然后对手术切除的前列腺组织行病理检查,按照病理诊断结果分为PCa组和BPH组,分别评估PCa组患者的临床分期及Oleason评分和BPH组患者TURP术后3个月、6个月、1年及随访结束时血清PSA、IPSS评分、生活质量等。结果：87例BPH伴血清PSA异常者行“诊断性”TURP,病理诊断为PCa5例,Gleason评分5～8分,肿瘤分期T1a～T2a,行PCa根治性切除术;病理诊断为BPH82例,出院后均随访2～4年,其中血清PSA恢复正常者77例,显著下降者3例,持续异常者2例,IPSS评分均有明显降低。结论：对血清PSA异常患者,“诊断性”TURP可有助于诊断PCa并对下尿路症状的改善和血清PSA的正常化具重要作用。     

PIM-1在前列腺癌组织中的表达及其与PSA的关系

目的:探讨PIM-1蛋白在前列腺癌组织中的表达及其与PSA复发之间的关系。方法:利用免疫组化SP检测68例前列腺癌和37例良性前列腺增生(BPH)组织中PIM-1蛋白的表达。结果:在前列腺癌组织中PIM-1蛋白表达的阳性率为67.65%(46/68);BPH组织中40.54%(15/37),两组表达的差异有显著意义(P<0.05)。PIM-1蛋白表达的阳性率在前列腺癌Gleason分级中6分33.33%(7/21),7分75%(21/28),8～10分94.74%(18/19),组间比较差异有显著性(P<0.05)。临床分期中在Ⅰ、Ⅱ、Ⅲ、Ⅳ期PIM-1蛋白表达率分别为47.62%、53.85%、73.33%、94.74%,36个月随访PSA复发状况采用Kaplan-Meier方法分析,PIM-1蛋白表达与有无复发分别是78.26%(36/46)和45.45%(10/22),差异有显著性(P<0.05)。结论:前列腺癌中PIM-1蛋白表达与前列腺癌的Gleason分级、临床分期以及PSA复发有密切关系,提示PIM-1基因在前列腺癌演化和进展中有重要作用,可能是前列腺癌的预后指标。