Severe acute respiratory coronavirus-2(SARS-CoV-2)infection course differs between the young and healthy and the elderly with co-morbidities.In the latter a potentially lethal coronavirus disease 2019(COVID-19)cytokin...Severe acute respiratory coronavirus-2(SARS-CoV-2)infection course differs between the young and healthy and the elderly with co-morbidities.In the latter a potentially lethal coronavirus disease 2019(COVID-19)cytokine storm has been described with an unrestrained renin-angiotensin(Ang)system(RAS).RAS inhibitors[Ang converting enzyme inhibitors and Ang II type 1 receptor(AT1R)blockers]while appearing appropriate in COVID-19,display enigmatic effects ranging from protection to harm.MicroRNA-155(miR-155)-induced translational repression of key cardiovascular(CV)genes(i.e.,AT1R)restrains SARS-CoV-2-engendered RAS hyperactivity to tolerable and SARS-CoV-2-protective CV phenotypes supporting a protective erythropoietin(EPO)evolutionary landscape.MiR-155’s disrupted repression of the AT1R 1166C-allele associates with adverse CV and COVID-19 outcomes,confirming its decisive role in RAS modulation.RAS inhibition disrupts this miR-155-EPO network by further lowering EPO and miR-155 in COVID-19 with co-morbidities,thereby allowing unimpeded RAS hyperactivity to progress precariously.Current pharmacological interventions in COVID-19 employing RAS inhibition should consider these complex but potentially detrimental miR-155/EPO-related effects.展开更多
目的探讨血液透析治疗对血清中microRNA-92a的去除效果及其损伤内皮细胞功能的机制。方法收集西安高新医院长期透析治疗的慢性肾病患者,分别收集透析前、透析后6 h左右血清,测定其中miR-92a含量变化,同时测定BUN、Scr及hsCRP水平变化。...目的探讨血液透析治疗对血清中microRNA-92a的去除效果及其损伤内皮细胞功能的机制。方法收集西安高新医院长期透析治疗的慢性肾病患者,分别收集透析前、透析后6 h左右血清,测定其中miR-92a含量变化,同时测定BUN、Scr及hsCRP水平变化。培养的内皮细胞给予慢性肾脏病患者透析前后血清刺激,观察miR-92a及其靶基因eNOS表达变化。结果透析前后血清中miR-92a含量(1.48±0.24 vs 1.20±0.18,P=0.356)及hsCRP(7.6±2.4 vs 7.5±3.1,P=0.862)水平无显著差异。而透析治疗可显著降低血清中BUN(26.4±8.8 vs 8.3±2.3,P<0.01)、Scr(926.3±178.1 vs 312.3±141.2,P<0.01)水平。进一步体外细胞实验RT-PCR检测证实与健康人血清相比,慢性肾脏病患者透析前后血清均可促使培养的脐静脉内皮细胞miR-92a表达增加(P<0.01),RT-PCR及Western Blot检测证实其靶基因eNOS表达均显著降低(P<0.01),内皮细胞功能受损。结论血液透析治疗前后血清中miR-92a下降不明显,miR-92a可致内皮细胞eNOS表达减少,这可能是透析治疗虽然能维持肾脏功能但是无法避免其心血管并发症发生的部分原因。展开更多
In this editorial,we comment on the article by Wu et al published“MicroRNA-630 alleviates inflammatory reactions in rats with diabetic kidney disease by targeting toll-like receptor 4”.Diabetic kidney disease(DKD)st...In this editorial,we comment on the article by Wu et al published“MicroRNA-630 alleviates inflammatory reactions in rats with diabetic kidney disease by targeting toll-like receptor 4”.Diabetic kidney disease(DKD)stands as a significant complication occurring from diabetes mellitus,which contributes substantially to the morbidity and mortality rates worldwide.Renal tubular epithelial cell damage,often accompanied by inflammatory responses and mesenchymal transdifferentiation,plays a pivotal role in the progression of DKD.Despite extensive research,the intricate molecular mechanisms underlying these processes remain to be determined.Wu et al remarkable work identifies microRNA-630(miR-630)as an emerging potential regulator of cell migration,apoptosis,and autophagy,prompting investigation into its association with DKD pathogenesis.This study endeavors to elucidate the impact of miR-630 on TEC injury and the inflammatory response in DKD rats.The role of miR-630 in human DKD will be of interest for future studies.展开更多
Background:Stool-based molecular markers have shown potential as a strategy for colorectal cancer(CRC)screening.This study aimed to evaluate the feasibility of using microRNA-92a expression as a biomarker for CRC in s...Background:Stool-based molecular markers have shown potential as a strategy for colorectal cancer(CRC)screening.This study aimed to evaluate the feasibility of using microRNA-92a expression as a biomarker for CRC in stool samples.Methods:The level of microRNA-92a was measured in stool samples from 210 CRC patients,29 patients with advanced adenomas,15 patients with other cancers,and 101 healthy controls,using real-time quantitative polymerase chain reaction.Receiver operating characteristic curves were used to evaluate sensitivity and specificity.Results:MicroRNA-92a expression was positive in 70.1%of CRC patients,44.8%of advanced adenomas patients,and 36.6%of healthy controls,using a cut-off value of 31.5.The corresponding sensitivity and specificity for discriminating CRC from advanced adenomas were 66.9%and 63.4%,respectively.Moreover,stool-based microRNA-92a expression was better at detecting CRC cancers in the distal colon(sensitivity 82.1%)than the proximal colon(sensitivity 67.9%).There were no significant differences in clinical stage of CRC when comparing AUCs of each parameter(P>0.05).Conclusion:These findings suggest that microRNA-92a expression in stool samples could serve as a promising non-invasive biomarker for CRC detection.展开更多
目的:观察microRNA-21(miR-21)在缺血再灌注损伤(I/R)早期大鼠心肌的表达及对细胞凋亡的影响。方法:SD大鼠随机分为对照组(冠状动脉注射转染空白对照病毒rAAV9-ZsGreen),miR-21组(冠状动脉注射转染rAAV9-ZsGreen-pre-miR-21),Sham组(仅...目的:观察microRNA-21(miR-21)在缺血再灌注损伤(I/R)早期大鼠心肌的表达及对细胞凋亡的影响。方法:SD大鼠随机分为对照组(冠状动脉注射转染空白对照病毒rAAV9-ZsGreen),miR-21组(冠状动脉注射转染rAAV9-ZsGreen-pre-miR-21),Sham组(仅开胸挂线),I/R组(进行I/R处理),I/R+miR-21(转染rAAV9-ZsGreen-pre-miR-21后再进行I/R处理)。用Realtime-PCR检测大鼠miR-21水平,免疫组织化学及Western印迹方法检测Bcl-2,Bax,caspase-3水平并计算Bcl-2/Bax比值。结果:冠状动脉注射rAAV9-ZsGreen-pre-miR-21可使miR-21表达增加4.43倍(P<0.001);与Sham组比较,I/R组大鼠缺血区miR-21水平下调(P<0.05),而非缺血区miR-21升高(P<0.05);与Sham组比较,I/R组再灌注1,2,6 h miR-21水平进行性下降(P<0.05),在同一时间点I/R+miR-21组较I/R组miR-21表达升高(P<0.05);与Sham组比较,再灌注6h时I/R及I/R+miR-21组Bcl-2增高、caspase-3增高、Bcl-2/Bax降低(P<0.05),与I/R组比较,I/R+miR-21组Bcl-2下调、caspase-3下调、Bcl-2/Bax增高(P<0.05)。结论:I/R早期大鼠心肌缺血区miR-21表达下降,细胞凋亡增加,过表达miR-21可改善细胞凋亡。展开更多
文摘Severe acute respiratory coronavirus-2(SARS-CoV-2)infection course differs between the young and healthy and the elderly with co-morbidities.In the latter a potentially lethal coronavirus disease 2019(COVID-19)cytokine storm has been described with an unrestrained renin-angiotensin(Ang)system(RAS).RAS inhibitors[Ang converting enzyme inhibitors and Ang II type 1 receptor(AT1R)blockers]while appearing appropriate in COVID-19,display enigmatic effects ranging from protection to harm.MicroRNA-155(miR-155)-induced translational repression of key cardiovascular(CV)genes(i.e.,AT1R)restrains SARS-CoV-2-engendered RAS hyperactivity to tolerable and SARS-CoV-2-protective CV phenotypes supporting a protective erythropoietin(EPO)evolutionary landscape.MiR-155’s disrupted repression of the AT1R 1166C-allele associates with adverse CV and COVID-19 outcomes,confirming its decisive role in RAS modulation.RAS inhibition disrupts this miR-155-EPO network by further lowering EPO and miR-155 in COVID-19 with co-morbidities,thereby allowing unimpeded RAS hyperactivity to progress precariously.Current pharmacological interventions in COVID-19 employing RAS inhibition should consider these complex but potentially detrimental miR-155/EPO-related effects.
文摘目的探讨血液透析治疗对血清中microRNA-92a的去除效果及其损伤内皮细胞功能的机制。方法收集西安高新医院长期透析治疗的慢性肾病患者,分别收集透析前、透析后6 h左右血清,测定其中miR-92a含量变化,同时测定BUN、Scr及hsCRP水平变化。培养的内皮细胞给予慢性肾脏病患者透析前后血清刺激,观察miR-92a及其靶基因eNOS表达变化。结果透析前后血清中miR-92a含量(1.48±0.24 vs 1.20±0.18,P=0.356)及hsCRP(7.6±2.4 vs 7.5±3.1,P=0.862)水平无显著差异。而透析治疗可显著降低血清中BUN(26.4±8.8 vs 8.3±2.3,P<0.01)、Scr(926.3±178.1 vs 312.3±141.2,P<0.01)水平。进一步体外细胞实验RT-PCR检测证实与健康人血清相比,慢性肾脏病患者透析前后血清均可促使培养的脐静脉内皮细胞miR-92a表达增加(P<0.01),RT-PCR及Western Blot检测证实其靶基因eNOS表达均显著降低(P<0.01),内皮细胞功能受损。结论血液透析治疗前后血清中miR-92a下降不明显,miR-92a可致内皮细胞eNOS表达减少,这可能是透析治疗虽然能维持肾脏功能但是无法避免其心血管并发症发生的部分原因。
基金Supported by the Kuwait Foundation for the Advancement of Sciences and Dasman Diabetes Institute,Kuwait,No.RACB-2021-007.
文摘In this editorial,we comment on the article by Wu et al published“MicroRNA-630 alleviates inflammatory reactions in rats with diabetic kidney disease by targeting toll-like receptor 4”.Diabetic kidney disease(DKD)stands as a significant complication occurring from diabetes mellitus,which contributes substantially to the morbidity and mortality rates worldwide.Renal tubular epithelial cell damage,often accompanied by inflammatory responses and mesenchymal transdifferentiation,plays a pivotal role in the progression of DKD.Despite extensive research,the intricate molecular mechanisms underlying these processes remain to be determined.Wu et al remarkable work identifies microRNA-630(miR-630)as an emerging potential regulator of cell migration,apoptosis,and autophagy,prompting investigation into its association with DKD pathogenesis.This study endeavors to elucidate the impact of miR-630 on TEC injury and the inflammatory response in DKD rats.The role of miR-630 in human DKD will be of interest for future studies.
基金This study was supported by the National Natural Science Foundation of China(Grant No.82202907 to Rong-Bin Liu).
文摘Background:Stool-based molecular markers have shown potential as a strategy for colorectal cancer(CRC)screening.This study aimed to evaluate the feasibility of using microRNA-92a expression as a biomarker for CRC in stool samples.Methods:The level of microRNA-92a was measured in stool samples from 210 CRC patients,29 patients with advanced adenomas,15 patients with other cancers,and 101 healthy controls,using real-time quantitative polymerase chain reaction.Receiver operating characteristic curves were used to evaluate sensitivity and specificity.Results:MicroRNA-92a expression was positive in 70.1%of CRC patients,44.8%of advanced adenomas patients,and 36.6%of healthy controls,using a cut-off value of 31.5.The corresponding sensitivity and specificity for discriminating CRC from advanced adenomas were 66.9%and 63.4%,respectively.Moreover,stool-based microRNA-92a expression was better at detecting CRC cancers in the distal colon(sensitivity 82.1%)than the proximal colon(sensitivity 67.9%).There were no significant differences in clinical stage of CRC when comparing AUCs of each parameter(P>0.05).Conclusion:These findings suggest that microRNA-92a expression in stool samples could serve as a promising non-invasive biomarker for CRC detection.
文摘目的:观察microRNA-21(miR-21)在缺血再灌注损伤(I/R)早期大鼠心肌的表达及对细胞凋亡的影响。方法:SD大鼠随机分为对照组(冠状动脉注射转染空白对照病毒rAAV9-ZsGreen),miR-21组(冠状动脉注射转染rAAV9-ZsGreen-pre-miR-21),Sham组(仅开胸挂线),I/R组(进行I/R处理),I/R+miR-21(转染rAAV9-ZsGreen-pre-miR-21后再进行I/R处理)。用Realtime-PCR检测大鼠miR-21水平,免疫组织化学及Western印迹方法检测Bcl-2,Bax,caspase-3水平并计算Bcl-2/Bax比值。结果:冠状动脉注射rAAV9-ZsGreen-pre-miR-21可使miR-21表达增加4.43倍(P<0.001);与Sham组比较,I/R组大鼠缺血区miR-21水平下调(P<0.05),而非缺血区miR-21升高(P<0.05);与Sham组比较,I/R组再灌注1,2,6 h miR-21水平进行性下降(P<0.05),在同一时间点I/R+miR-21组较I/R组miR-21表达升高(P<0.05);与Sham组比较,再灌注6h时I/R及I/R+miR-21组Bcl-2增高、caspase-3增高、Bcl-2/Bax降低(P<0.05),与I/R组比较,I/R+miR-21组Bcl-2下调、caspase-3下调、Bcl-2/Bax增高(P<0.05)。结论:I/R早期大鼠心肌缺血区miR-21表达下降,细胞凋亡增加,过表达miR-21可改善细胞凋亡。
