目的探讨E2F转录因子2(E2F2)和多配体蛋白聚糖-4(SDC4)对急性胰腺炎患者病情评估及预后诊断的价值。方法将2018年4月至2020年4月西安市中心医院收治的45例轻症急性胰腺炎患者作为轻症组,56例重症急性胰腺炎患者为重症组;将同期20名来我...目的探讨E2F转录因子2(E2F2)和多配体蛋白聚糖-4(SDC4)对急性胰腺炎患者病情评估及预后诊断的价值。方法将2018年4月至2020年4月西安市中心医院收治的45例轻症急性胰腺炎患者作为轻症组,56例重症急性胰腺炎患者为重症组;将同期20名来我院进行健康体检者作为对照组。比较各组研究对象的一般资料及临床特征;比较三组研究对象的E2F2、SDC4 m RNA和蛋白表达水平;分析E2F2、SDC4表达水平与急性胰腺炎患者JPN评分的相关性;分析血清SDC4、E2F2水平和JPN评分对急性胰腺炎的诊断价值。结果轻症组和重症组的腹痛、恶心呕吐发生率无明显差异(P>0.05);重症组的腹胀、全身性并发症发生率高于轻症组(P<0.05);轻症组和重症组的血清淀粉酶、脂肪酶、降钙素原、乳酸脱氢酶(LDH)以及C反应蛋白(CRP)水平高于对照组(P<0.01);重症组的血清淀粉酶、脂肪酶、降钙素原、LDH、CRP水平及JPN评分高于轻症组(P<0.01)。轻症组和重症组的E2F2、SDC4 m RNA和蛋白表达水平显著高于对照组,且重症组高于轻症组(P<0.05)。E2F2和SDC4表达水平与急性胰腺炎患者JPN评分呈正相关(P<0.001);E2F2表达水平与SDC4表达水平呈正相关(P<0.001)。血清E2F2和SDC4水平对急性胰腺炎的诊断价值较高,与JPN评分相似。结论E2F2和SDC4可作为评估急性胰腺炎患者发病及预后的潜在指标。展开更多
Objective: To investigate the expression of E2F and Bc1-2 and the clinicopathological significance in hepatocellular carcinoma. Methods: The expressions of E2F-3 and Bc1-2 in 74 patients with hepatic carcinoma, paraca...Objective: To investigate the expression of E2F and Bc1-2 and the clinicopathological significance in hepatocellular carcinoma. Methods: The expressions of E2F-3 and Bc1-2 in 74 patients with hepatic carcinoma, paracarcinoma and 15 patients with liver cirrhosis were detected by S-P immunohistochemical staining. Results: The expression of E2F in hepatic carcinoma was significantly higher than that in paracarcinoma or liver cirrhosis (P<0.005), the expression of Bc1-2 in hepatic carcinoma was significantly higher than that in paracarcinoma (P<0.005), in which Bc1-2 expression was lower than in liver cirrhosis(P<0.05). The expression of E2F-3 was related with histological grade, tumor size, and the expression of Bc1-2 was related with histological grade, tumor size and tumor number. There was correlation between the expression of E2F-3 and Bc1-2 in hepatic carcinoma. Conclusion: E2F-3 and Bc1-2 expression may play an important role in development, progression and cell apoptosis of tumor.展开更多
In this study,we identified the most deleterious nsSNP in RB1 gene through structural and functional properties of its protein (pRB) and investigated its binding affinity with E2F-2.Out of 956 SNPs,we investigated 12 ...In this study,we identified the most deleterious nsSNP in RB1 gene through structural and functional properties of its protein (pRB) and investigated its binding affinity with E2F-2.Out of 956 SNPs,we investigated 12 nsSNPs in coding region in which three of them (SNPids rs3092895,rs3092903 and rs3092905) are commonly found to be damaged by I-Mutant 2.0,SIFT and PolyPhen programs.With this effort,we modeled the mutant pRB proteins based on these deleterious nsSNPs.From a comparison of total energy,stabilizing residues and RMSD of these three mutant proteins with native pRB protein,we identified that the major mutation is from Glutamic acid to Glycine at the residue position of 746 of pRB.Further,we compared the binding efficiency of both native and mutant pRB (E746G) with E2F-2.We found that mutant pRB has less binding affinity with E2F-2 as compared to native type.This is due to sixteen hydrogen bonding and two salt bridges that exist between native type and E2F-2,whereas mutant type makes only thirteen hydrogen bonds and one salt bridge with E2F-2.Based on our investigation,we propose that the SNP with an id rs3092905 could be the most deleterious nsSNP in RB1 gene causing retinoblastoma.展开更多
文摘目的探讨E2F转录因子2(E2F2)和多配体蛋白聚糖-4(SDC4)对急性胰腺炎患者病情评估及预后诊断的价值。方法将2018年4月至2020年4月西安市中心医院收治的45例轻症急性胰腺炎患者作为轻症组,56例重症急性胰腺炎患者为重症组;将同期20名来我院进行健康体检者作为对照组。比较各组研究对象的一般资料及临床特征;比较三组研究对象的E2F2、SDC4 m RNA和蛋白表达水平;分析E2F2、SDC4表达水平与急性胰腺炎患者JPN评分的相关性;分析血清SDC4、E2F2水平和JPN评分对急性胰腺炎的诊断价值。结果轻症组和重症组的腹痛、恶心呕吐发生率无明显差异(P>0.05);重症组的腹胀、全身性并发症发生率高于轻症组(P<0.05);轻症组和重症组的血清淀粉酶、脂肪酶、降钙素原、乳酸脱氢酶(LDH)以及C反应蛋白(CRP)水平高于对照组(P<0.01);重症组的血清淀粉酶、脂肪酶、降钙素原、LDH、CRP水平及JPN评分高于轻症组(P<0.01)。轻症组和重症组的E2F2、SDC4 m RNA和蛋白表达水平显著高于对照组,且重症组高于轻症组(P<0.05)。E2F2和SDC4表达水平与急性胰腺炎患者JPN评分呈正相关(P<0.001);E2F2表达水平与SDC4表达水平呈正相关(P<0.001)。血清E2F2和SDC4水平对急性胰腺炎的诊断价值较高,与JPN评分相似。结论E2F2和SDC4可作为评估急性胰腺炎患者发病及预后的潜在指标。
文摘Objective: To investigate the expression of E2F and Bc1-2 and the clinicopathological significance in hepatocellular carcinoma. Methods: The expressions of E2F-3 and Bc1-2 in 74 patients with hepatic carcinoma, paracarcinoma and 15 patients with liver cirrhosis were detected by S-P immunohistochemical staining. Results: The expression of E2F in hepatic carcinoma was significantly higher than that in paracarcinoma or liver cirrhosis (P<0.005), the expression of Bc1-2 in hepatic carcinoma was significantly higher than that in paracarcinoma (P<0.005), in which Bc1-2 expression was lower than in liver cirrhosis(P<0.05). The expression of E2F-3 was related with histological grade, tumor size, and the expression of Bc1-2 was related with histological grade, tumor size and tumor number. There was correlation between the expression of E2F-3 and Bc1-2 in hepatic carcinoma. Conclusion: E2F-3 and Bc1-2 expression may play an important role in development, progression and cell apoptosis of tumor.
文摘In this study,we identified the most deleterious nsSNP in RB1 gene through structural and functional properties of its protein (pRB) and investigated its binding affinity with E2F-2.Out of 956 SNPs,we investigated 12 nsSNPs in coding region in which three of them (SNPids rs3092895,rs3092903 and rs3092905) are commonly found to be damaged by I-Mutant 2.0,SIFT and PolyPhen programs.With this effort,we modeled the mutant pRB proteins based on these deleterious nsSNPs.From a comparison of total energy,stabilizing residues and RMSD of these three mutant proteins with native pRB protein,we identified that the major mutation is from Glutamic acid to Glycine at the residue position of 746 of pRB.Further,we compared the binding efficiency of both native and mutant pRB (E746G) with E2F-2.We found that mutant pRB has less binding affinity with E2F-2 as compared to native type.This is due to sixteen hydrogen bonding and two salt bridges that exist between native type and E2F-2,whereas mutant type makes only thirteen hydrogen bonds and one salt bridge with E2F-2.Based on our investigation,we propose that the SNP with an id rs3092905 could be the most deleterious nsSNP in RB1 gene causing retinoblastoma.
