Alluri Leela Subhashini C, Paes Batista da Silva Andre, Verma Shiv, Fu Pingfu, Shen Daniel Lee, MacLennan Gregory, Gupta Sanjay, Bissada Nabil F
Periodontics, Case Western Reserve University School of Dental Medicine, Cleveland, USA.
Periodontics, Private Practice, Oklahoma, USA.
Cureus. 2021 Sep 5;13(9):e17742. doi: 10.7759/cureus.17742. eCollection 2021 Sep.
Background Intraprostatic inflammation is frequently observed in the prostate and linked to prostatic diseases, including prostatitis, benign prostatic hyperplasia (BPH), and cancer. The etiology of prostate diseases is unclear. Periodontal diseases are associated with an increased risk of prostate diseases. In men, chronic prostatitis and moderate/severe periodontitis have significantly elevated serum prostate-specific antigen (PSA) levels. Treatment of periodontal disease reduced PSA levels in men. The presence of periodontal pathogens deoxyribonucleic acid (DNA) was identified in the prostate fluid of prostatitis patients. These pathogenic bacteria might have the potential to trigger prostatitis progressing to prostatic adenocarcinoma. The mechanism(s) explaining the etiology of association between periodontal disease and prostate cancer remains unclear. However, the presence of periodontal pathogens has not been analyzed in the prostate gland. Objective To identify and compare the presence of specific periodontal pathogens in the areas of BPH, inflammation, and cancer of the prostate glands diagnosed with malignancy. Materials and methods Whole-mount radical prostatectomy sections from men (n=30) were identified for BPH, inflammation, and cancer areas and marked for tissue procurement. The tissues were subjected to DNA isolation and analysis of microbial DNA and total bacterial load for the following pathogens, including strain ATCC 33277, strain B422, strain 35405, strain strain ATCC 43037, and strain ATCC 33238performed real-time PCR. The universal bacterial primer pairs were used to detect genomic DNA (gDNA) from the total bacteria present in the samples. All species-specific primers were designed to target the variable regions of the 16S ribosomal RNA (rRNA). Data were analyzed using the 2-ΔΔCT method, statistically validated using unpaired t-test and ANOVA test. Results A total of 90 samples of prostate tissue specimens were analyzed for periodontal pathogens; only one pathogen ( subsp. strain ATCC 51190) showed a significant difference compared to the expression of (internal control). In particular, expression was 9, 11.9, and 10.3-fold higher in BPH, inflammation, and cancer, respectively, at p-value <0.05. Moreover, the bacterial load abundance/expression was almost similar in BPH (46.8-fold), inflammation (40.9 fold), and cancer (41.5 fold) higher. There was no significant difference in bacterial load (folder change) among the three areas of BPH, inflammation, and cancer (p-valve>0.05). Similarly, there was no significant difference between (folder change) among the three areas (p-valve>0.05). Conclusion is identified in the prostates that harbor cancer, chronic inflammation, and BPH.
前列腺内炎症在前列腺中经常被观察到,并且与前列腺疾病相关,包括前列腺炎、良性前列腺增生(BPH)和癌症。前列腺疾病的病因尚不清楚。牙周疾病与前列腺疾病风险增加有关。在男性中,慢性前列腺炎和中度/重度牙周炎患者的血清前列腺特异性抗原(PSA)水平显著升高。牙周疾病的治疗降低了男性的PSA水平。在前列腺炎患者的前列腺液中鉴定出了牙周病原体脱氧核糖核酸(DNA)。这些致病细菌可能有引发前列腺炎进展为前列腺腺癌的潜力。解释牙周疾病与前列腺癌之间关联病因的机制仍不清楚。然而,尚未对前列腺中牙周病原体的存在情况进行分析。
鉴定并比较在被诊断为恶性肿瘤的前列腺的BPH、炎症和癌症区域中特定牙周病原体的存在情况。
从男性(n = 30)的前列腺根治性切除标本中识别出BPH、炎症和癌症区域,并标记以便进行组织采集。对组织进行DNA分离,并对以下病原体的微生物DNA和总细菌载量进行分析,包括菌株ATCC 33277、菌株B422、菌株35405、菌株ATCC 43037和菌株ATCC 33238,进行实时PCR。通用细菌引物对用于检测样品中存在的总细菌的基因组DNA(gDNA)。所有物种特异性引物均设计用于靶向16S核糖体RNA(rRNA)的可变区域。数据采用2-ΔΔCT法进行分析,使用非配对t检验和方差分析进行统计学验证。
共对90份前列腺组织标本进行了牙周病原体分析;与(内对照)的表达相比,只有一种病原体(亚种菌株ATCC 51190)显示出显著差异。特别是,在BPH、炎症和癌症中,其表达分别高9倍、11.9倍和10.3倍,p值<0.05。此外,细菌载量丰度/表达在BPH(46.8倍)、炎症(40.9倍)和癌症(41.5倍)中几乎相似且更高。BPH、炎症和癌症这三个区域之间的细菌载量(倍数变化)没有显著差异(p值>0.05)。同样,这三个区域之间的(倍数变化)也没有显著差异(p值>0.05)。
在患有癌症、慢性炎症和BPH的前列腺中鉴定出了。