AIM： To study the molecular forms of trefoil factor 1 （TFF1） in normal gastric mucosa and its expression in normal and abnormal gastric tissues （gastric carcinoma, atypical hyperplasia and intestinalized gastric m...AIM： To study the molecular forms of trefoil factor 1 （TFF1） in normal gastric mucosa and its expression in normal and abnormal gastric tissues （gastric carcinoma, atypical hyperplasia and intestinalized gastric mucosa） and the role of TFF1 in the carcinogenesis and progression of gastric carcinoma and its molecular biological mechanism underlying gastric mucosa protection. METHODS： The molecular forms of TFF1 in normal gastric mucosa were observed by Western blot. The expression of TFF1 in normal and abnormal gastric tissues （gastric carcinoma, atypical hyperplasia and intestinalized gastric mucosa） was also assayed by immunohistochemical method. The average positive AO was estimated by Motic Images Advanced 3.0 software. RESULTS： Three patterns of TFF1 were found in normal gastric mucosa： monomer, dimmer, and TFF1 compound whose molecular weight is about 21 kDa. The concentration of TFF1 compound was the highest among these three patterns. TFF1 was expressed mainly in epithelial cytoplasm of the mucosa in gastric body and antrum, especially around the nuclei. The closer the TFF1 to the lumen, the higher the expression of TFF1, The expression of TFF1 in peripheral tissue of gastric carcinoma （0.51 ± 0.07） was higher than that in normal gastric mucosa （0.44 ± 0.06, P 〈 0.001）. The expression of TFF1 in gastric adenocarcinoma was positively related to the differentiation of adenocarcinoma. The lower the differentiation of adenocarcinoma was, the weaker the expression of TFF1. No TFF1 was expressed in poorlydifferentiated adenocarcinoma. The expression of TFF1 in moderately-well differentiated adenocarcinoma （0.45 ± 0.07） was a little lower than that in normal mucosa （P 〉 0.05）. The expression of TFF1 in gastric mucosa with atypical hyperplasia （0.57 ± 0.03） was significantly higher than that in normal gastric mucosa （P 〈 0.001）. No TFF1 was expressed in intestinalized gastric mucosa. There was no statistically significant difference between the expressions of TFFI in gastric mucosa around the intestinalized tissue （0.45 ± 0.07） and normal gastric mucosa （P 〉 0.05）. CONCLUSION： TFF1 is expressed mainly in epithelial cytoplasm of the mucosa in gastric body and antrum. Its main pattern is TFF1 compound, which may have a greater biological activity than monomer and dimer. The expression of TFF1 in peripheral mucosa of gastric ulcer is higher than that in mucosa 5 cm beyond the ulcer, indicating that TFF1 plays an important part in protection and restitution of gastric mucosa. The expression of TFF1 is increased in peripheral tissues of gastric carcinoma and gastric mucosa with atypical hyperplasia, but is decreased in cancer tissues, implying that TFF1 may be related to suppression and differentiation of carcinoma. The weaker expression of TFF1 in poorly-differentiated carcinoma may be related to the destruction of glands and cells in cancer tissues and the decrease in secretion of TFF1.展开更多
目的分析生长激素释放多肽(Ghrelin)和三叶因子1(trefoil factor family 1,TFF1)与胃溃疡患者临床病理特征及预后的关系。方法选取2017年3月至2020年3月陕西省榆林市第一医院收治的320例胃溃疡患者作为胃溃疡组,另选取同期165例健康体...目的分析生长激素释放多肽(Ghrelin)和三叶因子1(trefoil factor family 1,TFF1)与胃溃疡患者临床病理特征及预后的关系。方法选取2017年3月至2020年3月陕西省榆林市第一医院收治的320例胃溃疡患者作为胃溃疡组,另选取同期165例健康体检者作为健康对照组,比较两组研究对象的血清Ghrelin及TFF1水平,分析胃溃疡患者血清Ghrelin及TFF1水平与其临床病理特征的关系。对胃溃疡患者进行为期1年的随访,根据随访结果将其分为溃疡愈合组和溃疡未愈合组,比较两组血清Ghrelin及TFF1水平。绘制受试者工作特征(receiver operating characteristic,ROC)曲线,分析血清Ghrelin及TFF1水平预测胃溃疡患者预后的临床价值。结果胃溃疡组患者血清Ghrelin及TFF1水平显著高于健康对照组(P<0.05);溃疡面积>2cm^(2)、重度炎性反应及重度黏膜炎性反应的胃溃疡患者血清Ghrelin及TFF1水平均高于溃疡面积<1cm^(2)与溃疡面积1~2cm^(2)、轻度与中度炎性反应、轻度与中度黏膜炎性反应者(P<0.05)。随访6个月~1年,平均随访(8.65±1.68)个月,失访14例,270例(88.24%)患者溃疡愈合,余36例(11.76%)患者溃疡未愈合,溃疡愈合组患者血清Ghrelin及TFF1水平明显低于溃疡未愈合组(P<0.05)。ROC曲线分析显示,血清Ghrelin及TFF1联合预测胃溃疡患者预后的特异度、准确度、曲线下面积分别为87.04%、84.91%、0.850,均高于Ghrelin、TFF1单一预测的结果,但联合预测的敏感度为69.44%,低于二者单一预测。结论血清Ghrelin及TFF1水平在胃溃疡患者中异常升高,溃疡愈合后二者表达水平降低,二者联合应用对胃溃疡患者的预后具有较高的预测价值。展开更多
文摘AIM： To study the molecular forms of trefoil factor 1 （TFF1） in normal gastric mucosa and its expression in normal and abnormal gastric tissues （gastric carcinoma, atypical hyperplasia and intestinalized gastric mucosa） and the role of TFF1 in the carcinogenesis and progression of gastric carcinoma and its molecular biological mechanism underlying gastric mucosa protection. METHODS： The molecular forms of TFF1 in normal gastric mucosa were observed by Western blot. The expression of TFF1 in normal and abnormal gastric tissues （gastric carcinoma, atypical hyperplasia and intestinalized gastric mucosa） was also assayed by immunohistochemical method. The average positive AO was estimated by Motic Images Advanced 3.0 software. RESULTS： Three patterns of TFF1 were found in normal gastric mucosa： monomer, dimmer, and TFF1 compound whose molecular weight is about 21 kDa. The concentration of TFF1 compound was the highest among these three patterns. TFF1 was expressed mainly in epithelial cytoplasm of the mucosa in gastric body and antrum, especially around the nuclei. The closer the TFF1 to the lumen, the higher the expression of TFF1, The expression of TFF1 in peripheral tissue of gastric carcinoma （0.51 ± 0.07） was higher than that in normal gastric mucosa （0.44 ± 0.06, P 〈 0.001）. The expression of TFF1 in gastric adenocarcinoma was positively related to the differentiation of adenocarcinoma. The lower the differentiation of adenocarcinoma was, the weaker the expression of TFF1. No TFF1 was expressed in poorlydifferentiated adenocarcinoma. The expression of TFF1 in moderately-well differentiated adenocarcinoma （0.45 ± 0.07） was a little lower than that in normal mucosa （P 〉 0.05）. The expression of TFF1 in gastric mucosa with atypical hyperplasia （0.57 ± 0.03） was significantly higher than that in normal gastric mucosa （P 〈 0.001）. No TFF1 was expressed in intestinalized gastric mucosa. There was no statistically significant difference between the expressions of TFFI in gastric mucosa around the intestinalized tissue （0.45 ± 0.07） and normal gastric mucosa （P 〉 0.05）. CONCLUSION： TFF1 is expressed mainly in epithelial cytoplasm of the mucosa in gastric body and antrum. Its main pattern is TFF1 compound, which may have a greater biological activity than monomer and dimer. The expression of TFF1 in peripheral mucosa of gastric ulcer is higher than that in mucosa 5 cm beyond the ulcer, indicating that TFF1 plays an important part in protection and restitution of gastric mucosa. The expression of TFF1 is increased in peripheral tissues of gastric carcinoma and gastric mucosa with atypical hyperplasia, but is decreased in cancer tissues, implying that TFF1 may be related to suppression and differentiation of carcinoma. The weaker expression of TFF1 in poorly-differentiated carcinoma may be related to the destruction of glands and cells in cancer tissues and the decrease in secretion of TFF1.
