Cancer Research:口腔微生物不仅与牙周病相关,也影响食管癌风险

2017-12-06 小通 生物通

口腔是许多微生物的聚居地。口腔微生物一旦失衡,不仅影响口腔健康,也影响全身健康。近日发表在《Cancer Research》上的一项研究表明,口腔中的一些细菌与食管癌的风险增加相关。


口腔是许多微生物的聚居地。口腔微生物一旦失衡,不仅影响口腔健康,也影响全身健康。近日发表在《Cancer Research》上的一项研究表明,口腔中的一些细菌与食管癌的风险增加相关。

纽约大学医学院的Jiyoung Ahn领导了这项研究,她和同事收集了12万人的口腔清洗样本,其中大约100人患上食管腺癌或食管鳞状细胞癌。研究人员发现,福赛坦氏菌(Tannerella forsythia)和牙龈卟啉单胞菌(Porphyromonas gingivalis)与疾病风险增加相关,而其他一些细菌似乎能预防疾病。

“我们的研究表明,深入了解口腔微生物的作用,有望开发食管癌的预防策略,至少能够在早期阶段发现疾病,”Ahn说道。她也是这篇论文的通讯作者。

在这项前瞻性的病例-对照研究中,研究人员采集了参与者的口腔清洗样本,并询问了一些食管癌的风险因素,包括吸烟、饮酒和肥胖等。在10年的随访中,106名参与者患上食管腺癌或食管鳞状细胞癌。

他们从癌症患者及对照的样本中提取DNA,并开展16S rRNA测序分析。随后,他们以人类口腔微生物组数据集作为参考,将测序产生的序列分到不同的分类操作单元。研究人员指出,从微生物的物种多样性或整体组成来看,病例和对照没有区别。

不过,Ahn及其同事对口腔中的红色复合体(red complex)特别感兴趣,这些细菌与牙周病相关,具体包括福赛坦氏菌、牙龈卟啉单胞菌和齿垢密螺旋体。

研究人员指出,福赛坦氏菌与癌症风险的增加尤其相关,因为它在口腔中的水平升高让食管腺癌的风险增加了21%。同时,牙龈卟啉单胞菌数量增加也与食管鳞状细胞癌的风险增加有一定的关联。其他细菌,如放线菌、月形单胞菌和韦荣球菌,也与癌症风险增加相关。

与此同时,更多的细菌似乎在降低癌症的风险。研究人员指出,硬质棒状杆菌、肺炎链球菌、干燥奈瑟菌和浅黄奈瑟菌等细菌都与食管腺癌的风险降低相关。在生态网络分析中,这些物种中有许多是相互关联的。

研究人员表示,肺炎链球菌与疾病之间的负相关与以前的研究结果一致,但奈瑟菌的结论则与以前的研究相反。这些结果表明,潜在的保护性细菌(包括奈瑟菌)还需要进一步的研究,才能明确它们的真正作用。

原始出处:
Brandilyn A. Peters, Jing Wu, et al.Oral Microbiome Composition Reflects Prospective Risk for Esophageal Cancers.Cancer Research.December 2017 Volume 77, Issue 23

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    2017-12-08 zhouqu_8
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    2017-12-08 yangshch
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    2017-12-06 lovetcm

    口腔微生物组学的研究是下一个研究的重点

    0

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    2017-12-06 狼毒花1982

    学习了感谢分享

    0

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