Aim To define a mixed redundant model(MRM), improving the reliability of C 3I system. Methods The model combined the technology characters of two? unit system with one warm stand by unit and function substitute s...Aim To define a mixed redundant model(MRM), improving the reliability of C 3I system. Methods The model combined the technology characters of two? unit system with one warm stand by unit and function substitute system. The reliability and availability equations of MRM were deduced. Results and Conclusion Compared with several other reliability models, it has obvious effect upon improving the system reliability. The effect? cost rate is very high among these models. The model can be used in reliability design, evaluation and check of C 3I system. Only a little attached cost is needed to improve C 3I system reliability effectively.展开更多
背景:目前已有针对miRNA/mRNA轴调节骨关节炎疾病进程的分子机制研究。先前生物信息学研究发现具有临床预测价值的mRNA(磷脂酶Cδ3:phospholipase C delta 3,PLCD3)及其靶向miRNA(miR-34a-5p),尚缺实验验证其调控骨关节炎的具体作用及...背景:目前已有针对miRNA/mRNA轴调节骨关节炎疾病进程的分子机制研究。先前生物信息学研究发现具有临床预测价值的mRNA(磷脂酶Cδ3:phospholipase C delta 3,PLCD3)及其靶向miRNA(miR-34a-5p),尚缺实验验证其调控骨关节炎的具体作用及机制。目的:探讨miR-34a-5p/PLCD3轴对骨关节炎进展的调控作用及机制。方法:选择15例膝骨关节炎患者的滑膜为骨关节炎组,同时选择同期因创伤致髌骨骨折行内固定术的15例年轻患者的健康滑膜为对照组,Real-time PCR法检测滑膜中PLCD3及miR-34a-5p的表达。通过细胞转染的方法,将人滑膜关节炎成纤维细胞(human fibroblast like synovial cells-osteoarthritis,HFLS-OA)进行处理,并分为miR-34a-5p模拟物组、pCDH-PLCD3组、miR-34a-5p模拟物+pCDH-PLCD3组、miR-34a-5p抑制剂组、si-PLCD3组、miR-34a-5p抑制剂+si-PLCD3组,通过Real-time PCR法检测PLCD3和miR-34a-5p表达的关系;通过CCK-8法、细胞划痕实验检测各组HFLS-OA细胞活力及细胞迁移的影响;使用Western Blot法检测凋亡标记蛋白表达水平;使用ELISA法检测炎症因子的表达。结果与结论:①PLCD3是miR-34a-5p的直接靶标,同时PLCD3和miR-34a-5p表达水平呈负相关。②PLCD3上调会促进HFLS-OA细胞的增殖并抑制细胞迁移,而miR-34a-5p上调会显著抑制HFLS-OA细胞的活性并增强细胞迁移;miR-34a-5p过表达使HFLS-OA细胞Casp3和Casp9蛋白水平显著升高,而PLCD3过表达则表现出相反趋势。③PLCD3过表达显著增加了HFLS-OA细胞白细胞介素6和肿瘤坏死因子α的表达,而miR-34a-5p模拟物则表现出保护活性。④结果说明,miR-34a-5p/PLCD3轴可能通过调节滑膜细胞的炎症过程或凋亡来影响骨关节炎的进展。展开更多
目的:随着对补体失调研究的深入,以C3沉积为主的肾小球肾炎日益受到关注,其病理类型多样,且病理类型间症状及预后差异具有异质性。为避免误诊及漏诊,本研究分析不同病理类型C3沉积为主的肾小球肾炎的临床、病理及预后特点。方法:回顾性...目的:随着对补体失调研究的深入,以C3沉积为主的肾小球肾炎日益受到关注,其病理类型多样,且病理类型间症状及预后差异具有异质性。为避免误诊及漏诊,本研究分析不同病理类型C3沉积为主的肾小球肾炎的临床、病理及预后特点。方法:回顾性分析52例2013年6月至2022年10月行肾活检诊断为以C3沉积为主肾小球肾炎患者的临床、病理及随访资料。根据临床表现以及病理检查结果分为感染后肾小球肾炎(post-infectious glomerulonephritis,PIGN)组(n=15)和非感染后肾小球肾炎(non-post-infectious glomerulonephritis,N-PIGN)组(n=37)。进一步行N-PIGN亚组分析,分为C3独立沉积组(n=16)与C3复合沉积组(n=21),或C3肾病(C3 glomerulopathy,C3G)组(n=27)与非C3肾病(N-C3G)组(n=10)。结果:PIGN组相较于N-PIGN组,活检时血清肌酐值更低(84.60μmol/L vs 179.62μmol/L,P=0.001),补体C3值更低(0.36 g/L vs 0.74 g/L,P<0.001),病理慢性化病变程度更轻。在N-PIGN亚组分析中,C3复合沉积组较C3独立沉积组血清肌酐值更高(235.30μmol/L vs 106.70μmol/L,P=0.004),24 h尿蛋白值更高(4025.62 mg vs 1981.11 mg,P=0.037)。PIGN组的预后好于N-PIGN组(P=0.049),C3独立沉积组的预后好于C3复合沉积组(P=0.017),C3G组的预后好于N-C3G(P=0.018)。结论:C3沉积为主的肾小球肾炎涵盖多种病理类型,诊断C3G前需先排除PIGN,但对于非典型PIGN患者仍需要警惕C3G叠加或者相互转化;此外,荧光显微镜下经典补体C1q的沉积可能提示肾预后不良,应加强相关诊治与随访。展开更多
文摘Aim To define a mixed redundant model(MRM), improving the reliability of C 3I system. Methods The model combined the technology characters of two? unit system with one warm stand by unit and function substitute system. The reliability and availability equations of MRM were deduced. Results and Conclusion Compared with several other reliability models, it has obvious effect upon improving the system reliability. The effect? cost rate is very high among these models. The model can be used in reliability design, evaluation and check of C 3I system. Only a little attached cost is needed to improve C 3I system reliability effectively.
文摘目的:随着对补体失调研究的深入,以C3沉积为主的肾小球肾炎日益受到关注,其病理类型多样,且病理类型间症状及预后差异具有异质性。为避免误诊及漏诊,本研究分析不同病理类型C3沉积为主的肾小球肾炎的临床、病理及预后特点。方法:回顾性分析52例2013年6月至2022年10月行肾活检诊断为以C3沉积为主肾小球肾炎患者的临床、病理及随访资料。根据临床表现以及病理检查结果分为感染后肾小球肾炎(post-infectious glomerulonephritis,PIGN)组(n=15)和非感染后肾小球肾炎(non-post-infectious glomerulonephritis,N-PIGN)组(n=37)。进一步行N-PIGN亚组分析,分为C3独立沉积组(n=16)与C3复合沉积组(n=21),或C3肾病(C3 glomerulopathy,C3G)组(n=27)与非C3肾病(N-C3G)组(n=10)。结果:PIGN组相较于N-PIGN组,活检时血清肌酐值更低(84.60μmol/L vs 179.62μmol/L,P=0.001),补体C3值更低(0.36 g/L vs 0.74 g/L,P<0.001),病理慢性化病变程度更轻。在N-PIGN亚组分析中,C3复合沉积组较C3独立沉积组血清肌酐值更高(235.30μmol/L vs 106.70μmol/L,P=0.004),24 h尿蛋白值更高(4025.62 mg vs 1981.11 mg,P=0.037)。PIGN组的预后好于N-PIGN组(P=0.049),C3独立沉积组的预后好于C3复合沉积组(P=0.017),C3G组的预后好于N-C3G(P=0.018)。结论:C3沉积为主的肾小球肾炎涵盖多种病理类型,诊断C3G前需先排除PIGN,但对于非典型PIGN患者仍需要警惕C3G叠加或者相互转化;此外,荧光显微镜下经典补体C1q的沉积可能提示肾预后不良,应加强相关诊治与随访。