The expression of micro RNA-19b（mi R-19b） in acute necrotizing pancreatitis（ANP） and its functional role in acinar cell necrosis of SD rats were investigated. Twelve SD rats were divided into two groups randomly, ...The expression of micro RNA-19b（mi R-19b） in acute necrotizing pancreatitis（ANP） and its functional role in acinar cell necrosis of SD rats were investigated. Twelve SD rats were divided into two groups randomly, including control group and ANP group. The rat ANP models were established by intraperitoneal injection of L-arginine（2400 mg/kg body weight）, and equal volume of 0.9% Na Cl was injected in the control group. Mi RNA chip assay was performed to examine the expression of mi RNAs in the pancreas in two different groups. Besides, to further explore the role of mi R-19 b in ANP in vitro, taurolithocholic acid 3-sulfate disodium salt（TLC-S）（200 μmol/L） was administrated to treat the rat pancreatic acinar cell line, AR42 J, for establishing the ANP cells model. The quantitative real-time PCR（q RT-PCR） was adopted to measure the mi R-19 b expression. Moreover, the mimic mi RNA, mi RNA antisense oligonucleotide（AMO） and control vector were used to transfect AR42 J cells, the expression of mi R-19 b was confirmed by q RT-PCR and the necrotizing rate of AR42 J cells was detected with AO/EB method. The expression of mi R-19 b was significantly higher in ANP group than in control group as displayed by the mi RNA chip assay. Furthermore, after inducing necrosis of AR42 J cells in vitro, the expression of mi R-19 b was significantly increased by 2.51±0.14 times in comparison with the control group. As revealed by q RT-PCR assay, the expression of mi R-19 b was 5.94±0.95 times higher in the mimic mi RNA group than in the control vector group, companied with an obviously increased acinar cell necrotizing rate（50.3%±1.5% vs. 39.6%±2.3%, P〈0.05）. Moreover, the expression of mi R-19 b in the mi RNA AMO group was 0.38±0.15 times lower than in the control vector group, and the cell necrosis rate was much lower accordingly（23.1%±3.3% vs. 39.6%±2.3%, P〈0.05）. Besides, there was no significant difference between the control vector cells and the cells without treatment（P〈0.05）. The expression of mi R-19 b was significantly induced in ANP. In addition, up-regulation of mi R-19 b could promote the necrosis of pancreatic acinar cells and mi R-19 b deficiency could decrease the rate of pancreatic acinar cell necrosis.展开更多
文摘The expression of micro RNA-19b（mi R-19b） in acute necrotizing pancreatitis（ANP） and its functional role in acinar cell necrosis of SD rats were investigated. Twelve SD rats were divided into two groups randomly, including control group and ANP group. The rat ANP models were established by intraperitoneal injection of L-arginine（2400 mg/kg body weight）, and equal volume of 0.9% Na Cl was injected in the control group. Mi RNA chip assay was performed to examine the expression of mi RNAs in the pancreas in two different groups. Besides, to further explore the role of mi R-19 b in ANP in vitro, taurolithocholic acid 3-sulfate disodium salt（TLC-S）（200 μmol/L） was administrated to treat the rat pancreatic acinar cell line, AR42 J, for establishing the ANP cells model. The quantitative real-time PCR（q RT-PCR） was adopted to measure the mi R-19 b expression. Moreover, the mimic mi RNA, mi RNA antisense oligonucleotide（AMO） and control vector were used to transfect AR42 J cells, the expression of mi R-19 b was confirmed by q RT-PCR and the necrotizing rate of AR42 J cells was detected with AO/EB method. The expression of mi R-19 b was significantly higher in ANP group than in control group as displayed by the mi RNA chip assay. Furthermore, after inducing necrosis of AR42 J cells in vitro, the expression of mi R-19 b was significantly increased by 2.51±0.14 times in comparison with the control group. As revealed by q RT-PCR assay, the expression of mi R-19 b was 5.94±0.95 times higher in the mimic mi RNA group than in the control vector group, companied with an obviously increased acinar cell necrotizing rate（50.3%±1.5% vs. 39.6%±2.3%, P〈0.05）. Moreover, the expression of mi R-19 b in the mi RNA AMO group was 0.38±0.15 times lower than in the control vector group, and the cell necrosis rate was much lower accordingly（23.1%±3.3% vs. 39.6%±2.3%, P〈0.05）. Besides, there was no significant difference between the control vector cells and the cells without treatment（P〈0.05）. The expression of mi R-19 b was significantly induced in ANP. In addition, up-regulation of mi R-19 b could promote the necrosis of pancreatic acinar cells and mi R-19 b deficiency could decrease the rate of pancreatic acinar cell necrosis.
文摘目的探究血清微RNA-191(microRNA-191,miR-191)、细胞角蛋白19片段抗原21-1(cytokeratin 19 fragments antigen 21-1,CYFRA21-1)、糖类抗原72-4(carbohydrate antigen 72-4,CA72-4)水平对卵巢良、恶性肿瘤的鉴别诊断价值。方法将2017年6月至2019年6月首都医科大学附属北京妇产医院收治的156例卵巢恶性肿瘤患者和121例卵巢良性肿瘤患者分别纳入恶性组和良性组,另选取该院同期体检健康者纳入健康组。采用定量反转录聚合酶链反应技术检测受试者血清miR-191水平,采用电化学发光免疫法检测受试者血清CYFRA21-1、CA72-4水平。采用接受者操作特征曲线分析血清miR-191、CYFRA21-1、CA72-4水平对卵巢恶性肿瘤的诊断价值。结果良性组与恶性组患者血清miR-191、CYFRA21-1、CA72-4水平均显著高于健康组(均P<0.05)。恶性组患者血清miR-191、CYFRA21-1、CA72-4水平均显著高于良性组(均P<0.05)。临床分期Ⅲ~Ⅳ期、淋巴结转移患者血清miR-191、CYFRA21-1、CA72-4水平均显著高于Ⅰ~Ⅱ期、无淋巴结转移患者(均P<0.05)。高、中、低分化患者血清miR-191、CYFRA21-1、CA72-4水平依次显著升高(均P<0.05)。血清miR-191、CYFRA21-1、CA72-4预测卵巢恶性肿瘤的曲线下面积(area under the curve,AUC)分别为0.765、0.807、0.770,均明显低于三者联合检测的AUC(0.854)(Z=2.790、2.743、2.256,均P<0.05),且三者联合检测的灵敏度最高。结论卵巢恶性肿瘤患者血清miR-191、CYFRA21-1、CA72-4表达水平上调,均与临床分期、肿瘤分化程度和淋巴结转移有关,三者联合检测对卵巢良、恶性肿瘤的鉴别价值较高,有助于提高临床对卵巢恶性肿瘤的诊断准确性。
