CD8+T细胞在胃癌组织中的表达及其临床意义

目的 观察胃癌组织中浸润性淋巴细胞CD8+T的表达及临床作用.方法 应用免疫组织化学染色检测102例胃癌患者手术标本中浸润淋巴细胞CD8+T的表达.结果 在胃癌、胃炎及胃息肉组织中均可见浸润淋巴细胞CD8+T的表达,但胃癌组浸润淋巴细胞CD8+T的表达(29.53±14.71)个/HPF]明显高于慢性胃炎组(19.54±8.10)个/HPF]和胃息肉组(14.26±6.83)个/HPF],差异有统计学意义(P＜0.05).CD8+T细胞的表达与胃癌患者的性别、年龄、肿瘤部位、肿瘤大小、淋巴结转移、复发、病理分级和TNM分期无明显相关(P＞0.05);但与组织学类型和浸润深度有关,其中分化型胃癌患者CD8+T细胞的表达(33.9±18.4)个/HPF]高于低分化型患者的表达(27.6±12.0)个/HPF],差异有统计学意义(t=2.04,P＜0.05);未侵入肌层组的CD8+T细胞表达(38.8±13.8)个/HPF]明显高于侵入肌层组(27.7±14.1)个/HPF],差异有统计学意义(t=2.45,P＜0.05).与CD8+T细胞低表达组比较,CD8+T细胞高表达组胃癌患者中位生存时间延长5个月,但差异无统计学意义(χ2=1.0274,P＞0.05).多因素COX模型分析显示,与浸润淋巴细胞CD8+T低表达组比较,高表达组有降低胃癌死亡风险的趋势(RR=0.82,95%CI=0.41～1.65).结论 浸润性淋巴细胞CD8+T的表达与胃癌的预后有关.

Abstract：

Objective To study the expression and clinical significance of infiltrating lymphocytes CD8 + T in gastric carcinoma tissues.Methods The expression of infiltrating lymphocytes CD8 + T in 102surgically resected specimens of gastric cancer tissues was detected by using immunohistochemistry.Results CD8+ T cells were expressed both in gastric carcinoma,gastritis and gastric polyp tissues,but the number of CD8 + T cells in gastric carcinoma tissues (29.53 ± 14.71 )/high powered field (HPF)]wassignificantly greater than in gastritis tissues ( 19.54 ±8.10)/HPF]and polyp tissues ( 14.26 ±6.83)/HPF](P ＜0.05).No correlation was found between CD8 + T lymphocyte count and gender,age,tumor location,tumor size,lymph node metastasis,tumor relapse,pathological grade or TNM stage ( P ＞ 0.05 ).However,there was a statistically significant correlation between the number of CD8 + T cells and the histological type,invasive depth.The CD8 + T cell count was obviously higher in the differentiated group (33.9 ± 18.4)/HPF]than in the undifferentiated group (27.6 ± 12.0)/HPF]( t = 2.04,P＜0.05 ).And the number of CD8 + T cells was greater in the non-invasive group (38.8 ± 13.8)/HPF]than in the invasive group (27.7 ± 14.1 )/HPF]( t = 2.45,P＜0.05 ).The median survival time of gastric cancer patients with high expression of CD8 + T cells was 5 months longer than in those with low expression,but there was no significant difference.Multi-factor COX model analysis demonstrated that the risk of death in gastric cancer patients was lower in the CD8 + T cells high expression group than in the low expression group ( RR = 0.82,95%,CI = 0.41-1.65 ).Conclusion Detection of infiltrating lymphocytes CD8 + T expression in gastric carcinoma tissues will be beneficial to the judgment of the prognosis.

Expression and clinical significance of CD8 + T cells in gastric carcinoma tissues

Objective To study the expression and clinical significance of infiltrating lymphocytes CD8 + T in gastric carcinoma tissues.Methods The expression of infiltrating lymphocytes CD8 + T in 102surgically resected specimens of gastric cancer tissues was detected by using immunohistochemistry.Results CD8+ T cells were expressed both in gastric carcinoma,gastritis and gastric polyp tissues,but the number of CD8 + T cells in gastric carcinoma tissues (29.53 ± 14.71 )/high powered field (HPF)]wassignificantly greater than in gastritis tissues ( 19.54 ±8.10)/HPF]and polyp tissues ( 14.26 ±6.83)/HPF](P ＜0.05).No correlation was found between CD8 + T lymphocyte count and gender,age,tumor location,tumor size,lymph node metastasis,tumor relapse,pathological grade or TNM stage ( P ＞ 0.05 ).However,there was a statistically significant correlation between the number of CD8 + T cells and the histological type,invasive depth.The CD8 + T cell count was obviously higher in the differentiated group (33.9 ± 18.4)/HPF]than in the undifferentiated group (27.6 ± 12.0)/HPF]( t = 2.04,P＜0.05 ).And the number of CD8 + T cells was greater in the non-invasive group (38.8 ± 13.8)/HPF]than in the invasive group (27.7 ± 14.1 )/HPF]( t = 2.45,P＜0.05 ).The median survival time of gastric cancer patients with high expression of CD8 + T cells was 5 months longer than in those with low expression,but there was no significant difference.Multi-factor COX model analysis demonstrated that the risk of death in gastric cancer patients was lower in the CD8 + T cells high expression group than in the low expression group ( RR = 0.82,95%,CI = 0.41-1.65 ).Conclusion Detection of infiltrating lymphocytes CD8 + T expression in gastric carcinoma tissues will be beneficial to the judgment of the prognosis.