客观我们在胃的癌症和他们的癌症前期的损害调查了在 Caspase-3,房间增长和 apoptosis 的表示之间的关系,探索胃 mucosa 的 tumorigenesis。在 13 正常胃的 mucosa, 6 长期的衰退胃炎(CAG ) , 31 肠的组织变形(IM ) , 114 发育异常(DYS ) 和 20 胃的癌的方法 Caspase-3 表示组织化学地是调查免疫。房间增长被评估, anti-Ki-67 免疫染色, apoptosis 到标记的调停 TdT 的 dUTP 简历听刻痕结束(TUNEL ) 在 situ 用 DNA 破碎被评估方法。结果 Caspase-3 温和中等积极的表示在大多数正常表面的 epithelia,它在正常 mucosa 的确实极的分发, CAG, IM, DYS 和是在 TUNEL 看改变的胃的癌被观察,那么做了积极的率。Caspase-3 蛋白质表示与用 TUNEL 标记的 apoptotic 房间的数字显示出显著地积极的关联(关联系数 r = 0.94;P 【 0.01 ) 。Ki-67 表示与 Caspase-3 显示出一个否定然而并非重要的关联趋势(关联系数 r =−0.23;P 】 0.05 ) 。结论 Caspase-3 蛋白质表示从 CAG 是起来调整的到 IM 和温和中等的不正常的发育异常,但是在严重发育异常和胃的癌下面调整,显示那迟钝或 Caspase-3 的减少的表示密切与胃 mucosa 的 carcinogenesis 被相关。
Objective: We investigated the relationship between the expression of Caspase-3, cell proliferation and apoptosis in gastric cancer and their precancerous lesions, to explore the tumorigenesis of the stomach mucosa. Methods: Caspase- 3 expression in 13 normal gastric mucosa, 6 chronic atrophic gastritis (CAG), 31 intestinal metaplasia (IM), 114 dysplasia (DYS) and 20 gastric carcinomas were investigated immunohistochemically. Cell proliferation was evaluated with anti-Ki-67 immunostaining and apoptosis was evaluated using DNA fragmentation in situ by TdT-mediated dUTP biotin nick end labeling (TUNEL) method. Results: Caspase-3 mild-moderately positive expression was observed in most of normal superficial epithelia, its positively polar distribution in normal mucosa, CAG, IM, DYS and gastric carcinomas changed as seen in TU- NEL, and so did the positive rate. Caspase-3 protein expression showed significantly positive correlation with the number of apoptotic cells labeled with TUNEL (correlation coefficient r = 0,94; P 〈 0101). Ki-67 expression showed a negative but not significant correlation trend with Caspase-3 (correlation coefficient r = -0.23; P 〉 0.05). Conclusion: Caspase-3 protein expression was up-regulated from CAG to IM and mild-moderate atypical dysplasia, but down-regulated in severe dysplasia and gastric carcinoma, indicating that inactivity or reduced expression of Caspase-3 is closely correlated with carcinogenesis of the stomach mucosa.