microRNA—26a和microRNA—199a在胃癌患者血清中的表达检测及其临床意义
2018-12-18周轶冰
周轶冰
[摘要] 目的 探讨胃癌患者血清中microRNA-26a和microRNA-199a表达检测及其临床意义。 方法 收集佳木斯市中心医院2015年1月~2017年12月期间确诊且行根治术的胃癌患者20例作为实验组,健康人群20例作为对照组,使用qRT-PCR方法对实验组和对照组血清中microRNA-26a和microRNA-199a的表达水平进行定量检测,分析检测结果的临床意义。 结果 microRNA-26a在实验组术前血清样本中的表达水平(1.76±0.54)明显低于对照组(5.33±1.12)(t=4.55,P=0.002),也明显低于术后血清样本中的表达水平(3.89±0.87)(t=5.11,P=0.001);microRNA-199a在实验组术前血清样本中的表达水平(29.54±3.12)明显高于对照组(6.07±1.34)(t=6.19,P=0.001),也明显高于术后血清样本中的表达水平(15.87±2.64)(t=5.76,P=0.001)。 结论 microRNA-26a和microRNA-199a有可能成为胃癌早期诊断的血清标记物。
[关键词] 胃癌;血清样本;microRNA-26a;microRNA-199a
[中图分类号] R735.2 [文献标识码] A [文章编号] 1673-9701(2018)23-0022-03
Detection and clinical significance of microRNA-26a and microRNA-199a in serum of patients with gastric cancer
ZHOU Yibing
Department of Second General Surgery, Jiamusi Central Hospital in Heilongjiang Province, Jiamusi 154002, China
[Abstract] Objective To investigate the detection and clinical significance of microRNA-26a and microRNA-199a in serum of patients with gastric cancer. Methods A total of 20 patients who were diagnosed with gastric cancer and underwent radical resection in Jiamusi Central Hospital from January 2015 to December 2017 were selected as the experimental group. 20 healthy people were selected as the control group. The expression levels of microRNA-26a and microRNA-199a in two groups were detected quantitatively by qRT-PCR. The clinical significance of the detection results was analyzed. Results The expression level of microRNA-26a in the preoperative serum samples of the experimental group (1.76±0.54) was significantly lower than that in the control group (5.33±1.12) (t=4.55, P=0.002), which was also significantly lower than that of the control group after surgery(3.89±0.87) (t=5.11, P=0.001). The expression level of microRNA-199a in the preoperative serum samples of the experimental group(29.54±3.12) was significantly higher than that in the control group(6.07±1.34) (t=6.19, P=0.001), and the former was also significantly higher than that in postoperative serum samples(15.87±2.64)(t=5.76, P=0.001). Conclusion microRNA-26a and microRNA-199a may become serum markers for the early diagnosis of gastric cancer.
[Key words] Gastric cancer; Serum samples; microRNA-26a; microRNA-199a
胃癌是一種死亡率极高的恶性肿瘤,在我国早期诊断率较低,患者确诊时已经进入中晚期,导致手术治疗的效果并不理想。胃癌的发生是多因素共同作用的结果,分为多个阶段,由多种基因共同参与,通常是由于癌基因和抑癌基因表达失调所引起的。microRNA长度约为21个核苷酸,广泛存在于各种真核生物中,是一种非蛋白质编码RNA。近年来,国内外许多学者均致力于microRNA在肿瘤组织和血清中异常表达的研究工作,已经证实,microRNA参与很多癌基因和抑癌基因的调控,对癌细胞的增殖、分化和凋亡均起着关键作用[1-3]。
本研究选取佳木斯市中心医院2015年1月~2017年12月期间确诊且行根治术的胃癌患者20例作为实验组,在我院进行健康体检的健康人群20例作为对照组,使用qRT-PCR方法对实验组和对照组血清中microRNA-26a和microRNA-199a的表达水平进行定量检测,分析检测结果的临床意义。……
