GBV-C/HGV RNA transcripts were transcribed in vitro from a single GBV-C/HGV full-length cDNA clone pHGVqz, and injected directly into the liver of Macaca mulatta to test their infectivity. Serum samples from the e...GBV-C/HGV RNA transcripts were transcribed in vitro from a single GBV-C/HGV full-length cDNA clone pHGVqz, and injected directly into the liver of Macaca mulatta to test their infectivity. Serum samples from the experimental Macaca mulatta were collected weekly after injection to detect ALT, anti-GBV-C/HGV and GBV-C/HGV RNA. At week 6 post injection, the liver tissues of the infected Macaca mulatta were dissected through operation for histological examination. The results showed that ALT level of the Macaca mulatta remained normal and anti-GBV-C/HGV kept negative after infection. GBV-C/HGV RNA was detected positve from week 1 through week 14 post injection. The liver biopsy showed light viral-hepatitis like histological changes. From the preliminary results, we concluded that the in vitro transcripts of GBV-C/HGV may be infectious. Further studies are under way to confirm the conclusion.展开更多
文摘GBV-C/HGV RNA transcripts were transcribed in vitro from a single GBV-C/HGV full-length cDNA clone pHGVqz, and injected directly into the liver of Macaca mulatta to test their infectivity. Serum samples from the experimental Macaca mulatta were collected weekly after injection to detect ALT, anti-GBV-C/HGV and GBV-C/HGV RNA. At week 6 post injection, the liver tissues of the infected Macaca mulatta were dissected through operation for histological examination. The results showed that ALT level of the Macaca mulatta remained normal and anti-GBV-C/HGV kept negative after infection. GBV-C/HGV RNA was detected positve from week 1 through week 14 post injection. The liver biopsy showed light viral-hepatitis like histological changes. From the preliminary results, we concluded that the in vitro transcripts of GBV-C/HGV may be infectious. Further studies are under way to confirm the conclusion.
文摘目的探究长链非编码RNA核富集转录体1(long non-coding RNA paraspeckle assembly transcript 1,LncRNA-NEAT1)和微小RNA(micro RNA,miR)-93-5p在急性脑梗死(acute cerebral infarction,ACI)患者血清中的表达情况及临床意义。方法选取2020年1月~2022年2月河北北方学院附属第一医院收治的84例急性脑梗死患者作为脑梗死组,收集其临床资料,根据梗死病灶面积分为小面积梗死组、中面积梗死组和大面积梗死组;根据神经功能缺损程度分为轻度组、中度组和重度组;根据预后结局分为生存组和死亡组;同期健康体检者84例为对照组。采用实时荧光定量PCR法检测血清LncRNA-NEAT1和miR-93-5p表达水平;采用受试者工作特征(ROC)曲线分析血清LncRNANEAT1和miR-93-5p表达水平对急性脑梗死患者预后的预测效能。结果与对照组相比,脑梗死组血清LncRNANEAT1(2.46±0.38 vs 1.01±0.20)表达水平显著升高,miR-93-5p(0.42±0.16 vs 1.02±0.22)表达水平显著降低,差异具有统计学意义(t=30.948,33.796,均P<0.05)。血清LncRNA-NEAT1表达水平随梗死病灶面积(2.21±0.36,2.45±0.39,2.75±0.45)和神经功能缺损程度(2.24±0.34,2.46±0.40,2.70±0.45)增加而升高(F=11.434,8.674,均P<0.05),miR-93-5p表达水平(0.68±0.20,0.43±0.17,0.12±0.04)随梗死病灶面积和神经功能缺损程度(0.63±0.19,0.41±0.16,0.21±0.08)增加而降低,差异具有统计学意义(F=79.777,49.316,均P<0.05)。与生存组相比,死亡组血清LncRNA-NEAT1(2.78±0.43 vs 2.39±0.40)表达水平显著升高,miR-93-5p(0.28±0.09 vs 0.45±0.18)表达水平显著降低,差异具有统计学意义(t=3.378,3.550,均P<0.05)。血清LncRNA-NEAT1,miR-93-5p单独及联合预测急性脑梗死患者死亡的曲线下面积(AUC)分别为0.733(95%CI:0.591~0.876),0.784(95%CI:0.669~0.898)和0.849(95%CI:0.752~0.946),敏感度分别为53.3%,73.3%和86.7%,特异度分别为76.8%,75.4%和73.9%。结论LncRNANEAT1与miR-93-5p联合检测对急性脑梗死有一定预后预测价值。