Department of Otorhinolaryngology and Maxilofacial Surgery, Military University Hospital Prague, 16902 Prague, Czech Republic.
Third Faculty of Medicine, Charles University, 10000 Prague, Czech Republic.
Int J Environ Res Public Health. 2021 Sep 10;18(18):9545. doi: 10.3390/ijerph18189545.
Oropharyngeal/laryngeal carcinoma are common cancers of the upper aerodigestive system. Human papillomavirus (HPV) is described as the most frequent in the cancer of unknown primary. The presence of (HP) in the oral cavity is discussed in some papers.
To analyze the incidence of HPV and HP in oropharyngeal/laryngeal cancer persons versus persons with chronic tonsillar inflammation and healthy persons.
The samples were taken in three groups: (1) tissue of oropharynx/larynx cancer (103 specimens); (2) tissue of palatine tonsils (85 specimens); and (3) healthy control group (50 specimens). We analyzed the presence of HP (PCR) and HPV genomic DNA (Sacace HPV High-Risk Screen Real-TM Quant) in the samples.
HP was detected in 86 samples (83.5%) and high-risk HPV in 62 samples (60.2%). We found a very high incidence of HP. In the cancer group, HP was detected in 82.5% cases and HPV positivity in 57.8%. In total, 7.2% of the cancer patients were negative for HP and HPV together. In turn, 53.6% of the cancer patients were positive for HP and HPV together. Four cases (4.2%) were positive for HPV only. VacA positivity was detected in 82 (79.6%) of the cancer cases and VacA negativity in 21 (20.4%) if the cancer cases. The incidence of HP in chronic inflammation ( = 85) was 65 cases (76.5%) and the incidence of HPV was 38 cases (44.7%). VacA positivity was detected in 59 (69.4%) of the chronic inflammation cases and VacA negativity was found in 26 (30.6%) of the chronic inflammation cases. Regarding the control group, we found HP positivity in 5 cases (11.1%) and HPV positivity in 19 cases (42.2%). There was VacA positivity in 6 cases (50.0%) of the control group. Statistically significantly lower prevalence of HP ( < 0.001) and HPV ( = 0.006) was found in the control group.
We suggest that the palatine tonsils are colonized by HP. In our study, HP was present in oropharyngeal cancer in more cases in comparison with HPV infection. The presence of VacA from HP can have an influence on the human epithelial and immune cells' regulation ways. Our results do not support idea that the CagA-positive HP is a primary carcinogen in oropharyngeal area.
口咽/喉癌是上呼吸道和消化道常见的癌症。人乳头瘤病毒(HPV)是癌症中最常见的未知原发性病毒。一些文献中讨论了口腔中 HPV 的存在。
分析 HPV 和 HP 在口咽/喉癌患者与慢性扁桃体炎患者和健康人群中的存在情况。
样本取自三组:(1)口咽/喉癌组织(103 例);(2)腭扁桃体组织(85 例);和(3)健康对照组(50 例)。我们分析了样本中 HP(PCR)和 HPV 基因组 DNA(Sacace HPV High-Risk Screen Real-TM Quant)的存在情况。
HP 在 86 例(83.5%)样本中被检测到,高危 HPV 在 62 例(60.2%)样本中被检测到。我们发现 HP 的发病率非常高。在癌症组中,HP 在 82.5%的病例中被检测到,HPV 阳性率为 57.8%。总的来说,7.2%的癌症患者同时检测到 HP 和 HPV 阴性。相反,53.6%的癌症患者同时检测到 HP 和 HPV 阳性。4 例(4.2%)仅检测到 HPV 阳性。在 82 例(79.6%)癌症病例中检测到 VacA 阳性,在 21 例(20.4%)癌症病例中检测到 VacA 阴性。慢性炎症(=85)中 HP 的发病率为 65 例(76.5%),HPV 的发病率为 38 例(44.7%)。在 59 例(69.4%)慢性炎症病例中检测到 HP 阳性,在 26 例(30.6%)慢性炎症病例中检测到 HP 阴性。在对照组中,我们发现 HP 阳性 5 例(11.1%),HPV 阳性 19 例(42.2%)。对照组中有 6 例(50.0%)检测到 VacA 阳性。对照组中 HP(<0.001)和 HPV(=0.006)的阳性率显著降低。
我们认为腭扁桃体被 HP 定植。在我们的研究中,与 HPV 感染相比,HP 更常见于口咽癌。HP 来源的 VacA 可以影响人类上皮细胞和免疫细胞的调节方式。我们的结果并不支持 CagA 阳性 HP 是口咽部位原发性致癌物的观点。