目的分析血清micro RNA-23a(mi R-23a)与阻塞性睡眠呼吸暂停低通气综合征(OSAHS)儿童发生脑损伤的关系。方法收集2018年1月—2020年6月本院接受治疗的69例发生脑损伤的OSAHS患儿资料(发生组),并收集同期于本院接受治疗的69例未发生脑损...目的分析血清micro RNA-23a(mi R-23a)与阻塞性睡眠呼吸暂停低通气综合征(OSAHS)儿童发生脑损伤的关系。方法收集2018年1月—2020年6月本院接受治疗的69例发生脑损伤的OSAHS患儿资料(发生组),并收集同期于本院接受治疗的69例未发生脑损伤的OSAHS患儿(未发生组)临床资料进行回顾性对比分析。全部患儿均在治疗前接受全面的实验室指标检查,重点分析治疗前血清mi R-23a m RNA相对表达量与患儿发生脑损伤的关系及各指标对发生脑损伤的预测价值。结果发生组mi R-23a m RNA相对表达量高于未发生组(P<0.05);回归分析结果显示,治疗前血清mi R-23a m RNA相对表达量异常与OSAHS患儿发生脑损伤有关,治疗前血清mi R-23a m RNA相对表达量高表达可能是OSAHS患儿发生脑损伤风险因子(OR>1,P<0.05);绘制ROC曲线结果显示,治疗前血清mi R-23a m RNA相对表达量预测OSAHS患儿发生脑损伤风险的AUC>0.80,预测价值较理想。结论OSAHS患儿接受治疗前血清mi R-23a m RNA相对表达量与脑损伤发生有关,可能是OSAHS患儿发生脑损伤的风险因子,对患儿脑损伤有一定预测价值。展开更多
Long noncoding RNA and microRNA are regulatory noncoding RNAs that are implicated in Alzheimer's disease, but the role of long noncoding RNA-associated competitive endogenous RNA has not been fully elucidated. The...Long noncoding RNA and microRNA are regulatory noncoding RNAs that are implicated in Alzheimer's disease, but the role of long noncoding RNA-associated competitive endogenous RNA has not been fully elucidated. The long noncoding RNA growth arrest-specific 5(GAS5) is a member of the 5′-terminal oligopyrimidine gene family that may be involved in neurological disorders, but its role in Alzheimer's disease remains unclear. This study aimed to investigate the function of GAS5 and construct a GAS5-associated competitive endogenous RNA network comprising potential targets. RNA sequencing results showed that GAS5 was upregulated in five familial Alzheimer's disease(5×FAD) mice, APPswe/PSEN1dE9(APP/PS1) mice, Alzheimer's disease-related APPswe cells, and serum from patients with Alzheimer's disease. Functional experiments with targeted overexpression and silencing demonstrated that GAS5 played a role in cognitive dysfunction and multiple Alzheimer's disease-associated pathologies, including tau hyperphosphorylation, amyloid-beta accumulation, and neuronal apoptosis. Mechanistic studies indicated that GAS5 acted as an endogenous sponge by competing for microRNA-23b-3p(miR-23b-3p) binding to regulate its targets glycogen synthase kinase 3beta(GSK-3β) and phosphatase and tensin homologue deleted on chromosome 10(PTEN) expression in an Argonaute 2-induced RNA silencing complex(RISC)-dependent manner. GAS5 inhibited miR-23b-3p-mediated GSK-3β and PTEN cascades with a feedforward PTEN/protein kinase B(Akt)/GSK-3β linkage. Furthermore, recovery of GAS5/miR-23b-3p/GSK-3β/PTEN pathways relieved Alzheimer's disease-like symptoms in vivo, indicated by the amelioration of spatial cognition, neuronal degeneration, amyloid-beta load, and tau phosphorylation. Together, these findings suggest that GAS5 promotes Alzheimer's disease pathogenesis. This study establishes the functional convergence of the GAS5/miR-23b-3p/GSK-3β/PTEN pathway on multiple pathologies, suggesting a candidate therapeutic target in Alzheimer's disease.展开更多
实验建立了高效液相色谱法检测丹田降脂丸中23-乙酰泽泻醇B等3种成分含量的测定方法。Capcell Pak UG C_(18)色谱柱分离;检测波长:葡糖苷、23-乙酰泽泻醇B和淫羊藿苷检测波长分别设定为319nm、208nm和271nm;柱温:28℃;进样体积:10μL;...实验建立了高效液相色谱法检测丹田降脂丸中23-乙酰泽泻醇B等3种成分含量的测定方法。Capcell Pak UG C_(18)色谱柱分离;检测波长:葡糖苷、23-乙酰泽泻醇B和淫羊藿苷检测波长分别设定为319nm、208nm和271nm;柱温:28℃;进样体积:10μL;以乙腈为流动相A,1.0%磷酸溶液为流动相B,梯度洗脱,洗脱方法:0~5min 13%A,5~15min 13%~45%A,15~24min 45%~86%A,24~30min 86%A,30~31min 13%A,30~35min 13%A;外标法定量检测。结果表明,葡糖苷、23-乙酰泽泻醇B和淫羊藿苷在0.1896~18.96、0.0983~9.83和0.0981~9.81μg/mL范围内线性良好;平均回收率分别为99.83%、99.46%和99.14%;精密度和重复性RSD(n=6)均在5.0%以内;供试品溶液在24h内稳定。该方法检测时间短、操作简单,可以用于丹田降脂丸的质量控制。展开更多
目的观察和分析外周血microRNA-23b作为胃癌筛查分子标志物的应用价值。方法选取100例接受胃镜病理活检者作为研究对象,根据检查结果将其分为三组,确诊为胃癌者列为胃癌组,共纳入46例;确诊为胃癌前病变者列为癌前病变组,共纳入28例;胃...目的观察和分析外周血microRNA-23b作为胃癌筛查分子标志物的应用价值。方法选取100例接受胃镜病理活检者作为研究对象,根据检查结果将其分为三组,确诊为胃癌者列为胃癌组,共纳入46例;确诊为胃癌前病变者列为癌前病变组,共纳入28例;胃粘膜检查结果基本正常者列为对照组,共纳入26例。应用定量real time PCR检测技术对三组研究对象外周血样本中的miRNA-23b表达水平进行检测和比较。结果对照组研究对象的外周血样本的Log2△Ct值显著高于癌前病变组(P<0.05),而且癌前病变组的Log2△Ct值显著高于胃癌组(P<0.05);胃癌组、癌前病变组和对照组研究对象外周血样本中的miRNA-23b表达阳性率分别为71.7%、32.1%和3.8%,胃癌组的阳性率显著高于癌前病变组(P<0.05),癌前病变组显著高于对照组(P<0.05)。与胃镜活检结果对比,其阳性预测值为76.7%,阴性预测值为77.2%。结论胃癌患者外周血中miRNA-23b表达水平可反映患者病情的进展程度,且其诊断效率较高,有望成为用于胃癌早期筛查的新型分子标志物。展开更多
文摘目的分析血清micro RNA-23a(mi R-23a)与阻塞性睡眠呼吸暂停低通气综合征(OSAHS)儿童发生脑损伤的关系。方法收集2018年1月—2020年6月本院接受治疗的69例发生脑损伤的OSAHS患儿资料(发生组),并收集同期于本院接受治疗的69例未发生脑损伤的OSAHS患儿(未发生组)临床资料进行回顾性对比分析。全部患儿均在治疗前接受全面的实验室指标检查,重点分析治疗前血清mi R-23a m RNA相对表达量与患儿发生脑损伤的关系及各指标对发生脑损伤的预测价值。结果发生组mi R-23a m RNA相对表达量高于未发生组(P<0.05);回归分析结果显示,治疗前血清mi R-23a m RNA相对表达量异常与OSAHS患儿发生脑损伤有关,治疗前血清mi R-23a m RNA相对表达量高表达可能是OSAHS患儿发生脑损伤风险因子(OR>1,P<0.05);绘制ROC曲线结果显示,治疗前血清mi R-23a m RNA相对表达量预测OSAHS患儿发生脑损伤风险的AUC>0.80,预测价值较理想。结论OSAHS患儿接受治疗前血清mi R-23a m RNA相对表达量与脑损伤发生有关,可能是OSAHS患儿发生脑损伤的风险因子,对患儿脑损伤有一定预测价值。
基金supported by the National Natural Science Foundation of China,Nos. 82173806 and U1803281Chinese Academy of Medical Sciences (CAMS) Innovation Fund for Medical Science,Nos. 2021-I2M-1-030 and 2022-I2M-2-002Non-Profit Central Research Institute Fund of Chinese Academy of Medical Sciences,No. 2022-JKCS-08 (all to RL)。
文摘Long noncoding RNA and microRNA are regulatory noncoding RNAs that are implicated in Alzheimer's disease, but the role of long noncoding RNA-associated competitive endogenous RNA has not been fully elucidated. The long noncoding RNA growth arrest-specific 5(GAS5) is a member of the 5′-terminal oligopyrimidine gene family that may be involved in neurological disorders, but its role in Alzheimer's disease remains unclear. This study aimed to investigate the function of GAS5 and construct a GAS5-associated competitive endogenous RNA network comprising potential targets. RNA sequencing results showed that GAS5 was upregulated in five familial Alzheimer's disease(5×FAD) mice, APPswe/PSEN1dE9(APP/PS1) mice, Alzheimer's disease-related APPswe cells, and serum from patients with Alzheimer's disease. Functional experiments with targeted overexpression and silencing demonstrated that GAS5 played a role in cognitive dysfunction and multiple Alzheimer's disease-associated pathologies, including tau hyperphosphorylation, amyloid-beta accumulation, and neuronal apoptosis. Mechanistic studies indicated that GAS5 acted as an endogenous sponge by competing for microRNA-23b-3p(miR-23b-3p) binding to regulate its targets glycogen synthase kinase 3beta(GSK-3β) and phosphatase and tensin homologue deleted on chromosome 10(PTEN) expression in an Argonaute 2-induced RNA silencing complex(RISC)-dependent manner. GAS5 inhibited miR-23b-3p-mediated GSK-3β and PTEN cascades with a feedforward PTEN/protein kinase B(Akt)/GSK-3β linkage. Furthermore, recovery of GAS5/miR-23b-3p/GSK-3β/PTEN pathways relieved Alzheimer's disease-like symptoms in vivo, indicated by the amelioration of spatial cognition, neuronal degeneration, amyloid-beta load, and tau phosphorylation. Together, these findings suggest that GAS5 promotes Alzheimer's disease pathogenesis. This study establishes the functional convergence of the GAS5/miR-23b-3p/GSK-3β/PTEN pathway on multiple pathologies, suggesting a candidate therapeutic target in Alzheimer's disease.
文摘实验建立了高效液相色谱法检测丹田降脂丸中23-乙酰泽泻醇B等3种成分含量的测定方法。Capcell Pak UG C_(18)色谱柱分离;检测波长:葡糖苷、23-乙酰泽泻醇B和淫羊藿苷检测波长分别设定为319nm、208nm和271nm;柱温:28℃;进样体积:10μL;以乙腈为流动相A,1.0%磷酸溶液为流动相B,梯度洗脱,洗脱方法:0~5min 13%A,5~15min 13%~45%A,15~24min 45%~86%A,24~30min 86%A,30~31min 13%A,30~35min 13%A;外标法定量检测。结果表明,葡糖苷、23-乙酰泽泻醇B和淫羊藿苷在0.1896~18.96、0.0983~9.83和0.0981~9.81μg/mL范围内线性良好;平均回收率分别为99.83%、99.46%和99.14%;精密度和重复性RSD(n=6)均在5.0%以内;供试品溶液在24h内稳定。该方法检测时间短、操作简单,可以用于丹田降脂丸的质量控制。
文摘目的观察和分析外周血microRNA-23b作为胃癌筛查分子标志物的应用价值。方法选取100例接受胃镜病理活检者作为研究对象,根据检查结果将其分为三组,确诊为胃癌者列为胃癌组,共纳入46例;确诊为胃癌前病变者列为癌前病变组,共纳入28例;胃粘膜检查结果基本正常者列为对照组,共纳入26例。应用定量real time PCR检测技术对三组研究对象外周血样本中的miRNA-23b表达水平进行检测和比较。结果对照组研究对象的外周血样本的Log2△Ct值显著高于癌前病变组(P<0.05),而且癌前病变组的Log2△Ct值显著高于胃癌组(P<0.05);胃癌组、癌前病变组和对照组研究对象外周血样本中的miRNA-23b表达阳性率分别为71.7%、32.1%和3.8%,胃癌组的阳性率显著高于癌前病变组(P<0.05),癌前病变组显著高于对照组(P<0.05)。与胃镜活检结果对比,其阳性预测值为76.7%,阴性预测值为77.2%。结论胃癌患者外周血中miRNA-23b表达水平可反映患者病情的进展程度,且其诊断效率较高,有望成为用于胃癌早期筛查的新型分子标志物。
