目的:评估急诊冠状动脉介入治疗术(PCI)后循环microRNA-26b-5p水平和血糖水平变化的趋势及相关性。方法:根据入选标准和排除标准,共入选接受急诊PCI术的急性前壁心肌梗死患者38例。详细记录临床相关资料,分别于术前、术后24h、术后72h...目的:评估急诊冠状动脉介入治疗术(PCI)后循环microRNA-26b-5p水平和血糖水平变化的趋势及相关性。方法:根据入选标准和排除标准,共入选接受急诊PCI术的急性前壁心肌梗死患者38例。详细记录临床相关资料,分别于术前、术后24h、术后72h行循环血microRNA-26b-5p和血糖水平检测。Real Time PCR法检测血液样本中microRNA-26b-5p表达量的变化。结果:对于成功行急诊PCI的急性心肌梗死患者,术后microRNA-26b-5p表达水平较术前明显升高(P<0.01),术后血糖水平逐渐下降(P<0.01),两者之间存在负相关(r=-0.332,P<0.01)。结论:急性心肌梗死患者往往存在应激性高血糖,microRNA-26b-5p可能参与血糖水平的相关。展开更多
BACKGROUND NLRP3-mediated pyroptosis is recognized as an essential modulator of renal disease pathology.Long noncoding RNAs(lncRNAs)are active participators of diabetic nephropathy(DN).X inactive specific transcript(X...BACKGROUND NLRP3-mediated pyroptosis is recognized as an essential modulator of renal disease pathology.Long noncoding RNAs(lncRNAs)are active participators of diabetic nephropathy(DN).X inactive specific transcript(XIST)expression has been reported to be elevated in the serum of DN patients.AIM To evaluate the mechanism of lncRNA XIST in renal tubular epithelial cell(RTEC)pyroptosis in DN.METHODS A DN rat model was established through streptozotocin injection,and XIST was knocked down by tail vein injection of the lentivirus LV sh-XIST.Renal metabolic and biochemical indices were detected,and pathological changes in the renal tissue were assessed.The expression of indicators related to inflammation and pyroptosis was also detected.High glucose(HG)was used to treat HK2 cells,and cell viability and lactate dehydrogenase(LDH)activity were detected after silencing XIST.The subcellular localization and downstream mechanism of XIST were investigated.Finally,a rescue experiment was carried out to verify that XIST regulates NLR family pyrin domain containing 3(NLRP3)/caspase-1-mediated RTEC pyroptosis through the microRNA-15-5p(miR-15b-5p)/Toll-like receptor 4(TLR4)axis.RESULTS XIST was highly expressed in the DN models.XIST silencing improved renal metabolism and biochemical indices and mitigated renal injury.The expression of inflammation and pyroptosis indicators was significantly increased in DN rats and HG-treated HK2 cells;cell viability was decreased and LDH activity was increased after HGtreatment. Silencing XIST inhibited RTEC pyroptosis by inhibiting NLRP3/caspase-1. Mechanistically,XIST sponged miR-15b-5p to regulate TLR4. Silencing XIST inhibited TLR4 by promotingmiR-15b-5p. miR-15b-5p inhibition or TLR4 overexpression averted the inhibitory effect ofsilencing XIST on HG-induced RTEC pyroptosis.CONCLUSIONSilencing XIST inhibits TLR4 by upregulating miR-15b-5p and ultimately inhibits renal injury inDN by inhibiting NLRP3/caspase-1-mediated RTEC pyroptosis.展开更多
Sus Scrofa microRNA-146b-5p(ssc-miR-146b) was found to be one of differentially expressional microRNAs(miRNA) in our previous study. Not only it is highly expressed but also it maintains the largest up-regulated diffe...Sus Scrofa microRNA-146b-5p(ssc-miR-146b) was found to be one of differentially expressional microRNAs(miRNA) in our previous study. Not only it is highly expressed but also it maintains the largest up-regulated differences on the expressional level at different time points in the small intestinal mucosa of weaned piglets. To further explore the regulation mechanism of microRNA-146b-5 p(miR-146b)during the stressful progress in weaned piglets, the present study predicted the functions of the ssc-miR-146b upstream promoter region using biological analysis. The analytical results showed that ssc-miR-146b is an intergenic miRNA. The length of the promoter region of ssc-miR-146b was predicted to be2,249 bp using the Ensemble database. The length of the CpG island in the ssc-miR-146b promoter region was found to be 167 bp and it was located from 464 to 630 bp. Twenty six binding sites of 9 transcription factors in the upstream promoter region, including the sites of genes such as Spl, AP-1, MyoD, GATA etc,were discovered using different kinds of analytical software. The predictions of the CpG island and transcription factor binding sites provided significant information for further studying the transcriptional regulation mechanism of ssc-miR-146b on the small intestinal injury due to weaning stress.展开更多
文摘目的:评估急诊冠状动脉介入治疗术(PCI)后循环microRNA-26b-5p水平和血糖水平变化的趋势及相关性。方法:根据入选标准和排除标准,共入选接受急诊PCI术的急性前壁心肌梗死患者38例。详细记录临床相关资料,分别于术前、术后24h、术后72h行循环血microRNA-26b-5p和血糖水平检测。Real Time PCR法检测血液样本中microRNA-26b-5p表达量的变化。结果:对于成功行急诊PCI的急性心肌梗死患者,术后microRNA-26b-5p表达水平较术前明显升高(P<0.01),术后血糖水平逐渐下降(P<0.01),两者之间存在负相关(r=-0.332,P<0.01)。结论:急性心肌梗死患者往往存在应激性高血糖,microRNA-26b-5p可能参与血糖水平的相关。
基金Supported by Natural Science Foundation of Shenzhen University General Hospital (SUGH2020QD011)
文摘BACKGROUND NLRP3-mediated pyroptosis is recognized as an essential modulator of renal disease pathology.Long noncoding RNAs(lncRNAs)are active participators of diabetic nephropathy(DN).X inactive specific transcript(XIST)expression has been reported to be elevated in the serum of DN patients.AIM To evaluate the mechanism of lncRNA XIST in renal tubular epithelial cell(RTEC)pyroptosis in DN.METHODS A DN rat model was established through streptozotocin injection,and XIST was knocked down by tail vein injection of the lentivirus LV sh-XIST.Renal metabolic and biochemical indices were detected,and pathological changes in the renal tissue were assessed.The expression of indicators related to inflammation and pyroptosis was also detected.High glucose(HG)was used to treat HK2 cells,and cell viability and lactate dehydrogenase(LDH)activity were detected after silencing XIST.The subcellular localization and downstream mechanism of XIST were investigated.Finally,a rescue experiment was carried out to verify that XIST regulates NLR family pyrin domain containing 3(NLRP3)/caspase-1-mediated RTEC pyroptosis through the microRNA-15-5p(miR-15b-5p)/Toll-like receptor 4(TLR4)axis.RESULTS XIST was highly expressed in the DN models.XIST silencing improved renal metabolism and biochemical indices and mitigated renal injury.The expression of inflammation and pyroptosis indicators was significantly increased in DN rats and HG-treated HK2 cells;cell viability was decreased and LDH activity was increased after HGtreatment. Silencing XIST inhibited RTEC pyroptosis by inhibiting NLRP3/caspase-1. Mechanistically,XIST sponged miR-15b-5p to regulate TLR4. Silencing XIST inhibited TLR4 by promotingmiR-15b-5p. miR-15b-5p inhibition or TLR4 overexpression averted the inhibitory effect ofsilencing XIST on HG-induced RTEC pyroptosis.CONCLUSIONSilencing XIST inhibits TLR4 by upregulating miR-15b-5p and ultimately inhibits renal injury inDN by inhibiting NLRP3/caspase-1-mediated RTEC pyroptosis.
基金supported by grants from the Zhejiang Provincial Natural Science Foundation(LY15C170004)the National Natural Science Foundation of China(31101725)+3 种基金the Science Technology Department of Zhejiang Province(2012C12906-4)the Modern Agro-industry Technology Research System of China(CARS-36)National Key Technology R&D Program(2012BAD39B03-04)Agro-scientific Research in the Public Interest(201403047)
文摘Sus Scrofa microRNA-146b-5p(ssc-miR-146b) was found to be one of differentially expressional microRNAs(miRNA) in our previous study. Not only it is highly expressed but also it maintains the largest up-regulated differences on the expressional level at different time points in the small intestinal mucosa of weaned piglets. To further explore the regulation mechanism of microRNA-146b-5 p(miR-146b)during the stressful progress in weaned piglets, the present study predicted the functions of the ssc-miR-146b upstream promoter region using biological analysis. The analytical results showed that ssc-miR-146b is an intergenic miRNA. The length of the promoter region of ssc-miR-146b was predicted to be2,249 bp using the Ensemble database. The length of the CpG island in the ssc-miR-146b promoter region was found to be 167 bp and it was located from 464 to 630 bp. Twenty six binding sites of 9 transcription factors in the upstream promoter region, including the sites of genes such as Spl, AP-1, MyoD, GATA etc,were discovered using different kinds of analytical software. The predictions of the CpG island and transcription factor binding sites provided significant information for further studying the transcriptional regulation mechanism of ssc-miR-146b on the small intestinal injury due to weaning stress.
