实用医学杂志 ›› 2021, Vol. 37 ›› Issue (6): 782-786.doi: 10.3969/j.issn.1006⁃5725.2021.06.019

• 临床研究 • 上一篇    下一篇

胃癌中幽门螺杆菌vacA基因型的分布及其与NF⁃κB表达的关系

薄威, 王旭光, 李佳琦, 梁伊灵, 李磊, 勾佳钰, 张忠    

  1. 沈阳医学院病理学教研室(沈阳 110034)

  • 出版日期:2021-03-25 发布日期:2021-03-25
  • 通讯作者: 张忠 E⁃mail:zhongzhang0808@gmail.com
  • 基金资助:

    辽宁省科学技术计划项目省自然科学基金指导计划(编号:20170540885);沈阳医学院青年科学研究基金(编号:20202025)

Helicobacter pylori vacA genotypes distribution and relationship with NF ⁃ κB expression in gastric cancer

BO Wei,WANG Xuguang,LI Jiaqi,LIANG Yiling,LI Lei,GOU Jiayu,ZHANG Zhong.   

  1. Department of Pathology Shenyang Medical College,Shenyang 110034,China

  • Online:2021-03-25 Published:2021-03-25
  • Contact: ZHANG Zhong E⁃mail:zhongzhang0808@gmail.com

摘要:

目的 探讨辽宁地区胃癌患者幽门螺杆菌(Helicobacter pyloriH.pylorivacA优势基因型并探讨vacA 不同基因亚型与NF⁃κB 表达的关系。方法 选取自 2010 7 月至 2014 7 月我院手术切除的H.pylori(+)的胃癌组织样本 140 例。按照试剂盒说明书提取胃癌组织的DNA,采用PCR 技术检测H.pylori 不同 vacA 基因型表达情况,以免疫组化方法检测胃癌组织NF⁃κB 蛋白表达。结果 在胃癌中 vacAs1 vacAm1vacAs1m1 亚型分布高于其他亚型(P < 0.05)。其中,vacAm1 vacAs1m1 基因型在弥散型胃癌中比 例高于肠型胃癌,差异有显著统计学意义(P < 0.01);NF⁃κB 表达与性别和淋巴转移情况密切相关,其中 NF⁃κB 在男性中表达明显高于女性(P < 0.05)。在淋巴结转移(+)的患者中 NF⁃κB 的表达明显高于淋巴 结转移(-)的患者(P < 0.01)。NF⁃κB 表达与 H.pylori vacAs1m1s1m1)三种亚型密切相关,并且当此三 种基因型为阳性时,NF ⁃κB 阳性表达率均明显升高。结论 辽宁地区内胃癌发生的优势基因型为 vacAm1vacAs1vacAs1m1 三种亚型,携带 vacAm1 vacAs1m1 基因亚型的患者可能是弥散型胃癌的高发人 群,且其可能通过促进NF⁃κB 的表达进而导致胃癌的发生。

关键词:

Abstract:

Objective To analyze vacA dominant genotypes of Helicobacter pylori(H.pylori)in gastric can⁃ cer patients in Liaoning and its association with NF⁃κB expression and provide laboratory basis for the mechanism and clinical treatment of gastric cancer. Methods A total of 140 cases of gastric cancer tissue samples with positive H. pylori were determined by surgical resection from 2010 to 2014. DNA was extracted from gastric cancer tissues according to the kit instructions,and the expression of different vacA genotypes of H. pylori was detected by PCR technology. The expression of NF⁃κB protein in gastric cancer tissues was detected by immunohistochemistry. Results The distribution of vacAs1,vacAm1,and vacAs1m1 subtypes in gastric cancer was higher than that of other subtypes(P < 0.05). Among them,the proportion of vacAm1 and vacAs1m1 genotypes in diffuse gastric cancer is higher than that of intestinal gastric cancer,and the difference is statistically significant(P < 0.01). NF⁃ κB expression is closely related to gender and lymphatic metastasis and the expression of NF⁃ κB in male patients was significantly higher than that in female patients,indicating statistical significance(P < 0.05). The expression of NF⁃ κ B was significantly higher in patients with lymphatic metastasis than in those ,and the difference was statistically significant(P < 0.01). NF⁃κB expression was closely related to H.pylori vacAs1,vacAm1,and vacAs1m1 subtypes,and the differences were statistically significant(P < 0.05). When these three genotypes were positive the positive expression rate of NF ⁃ κB was significantly increased. Conclusion H. pylori vacAm1,vacAs1,and vacAs1m1 are the dominant genotypes of gastric cancer in Liaoning. Patients carrying vacAs1m1 gene subtype may be a high⁃incidence population of diffuse gastric cancer,and vacAs1m1 gene subtype may promote the expression of NF⁃κB and cause gastric cancer.

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