目的探讨F框/WD40域蛋白7(F-box and WD-40domain protein7,FBXW7)和胆固醇调节元件结合蛋白(sterol regulatory element binding proteins,SREBPs)基因多态性与新疆地区维吾尔族人群冠心病的相关性。方法 360例维吾尔族冠心病患者(冠...目的探讨F框/WD40域蛋白7(F-box and WD-40domain protein7,FBXW7)和胆固醇调节元件结合蛋白(sterol regulatory element binding proteins,SREBPs)基因多态性与新疆地区维吾尔族人群冠心病的相关性。方法 360例维吾尔族冠心病患者(冠心病组)和373例维吾尔族健康受试者(对照组),2组采用改良的多重高温连接酶检测反应基因分型技术分析FBXW7、SREBP-1和SREBP-2基因多态性位点,检测2组血压和血生化指标,比较2组基因频率分布情况,并采用多因素logistic回归分析冠心病的独立危险因素。结果冠心病组吸烟、饮酒比率,合并高血压、糖尿病、高脂血症发生率,空腹血糖、三酰甘油、总胆固醇、低密度脂蛋白胆固醇水平均高于对照组(P<0.05),高密度脂蛋白胆固醇水平低于对照组(P<0.05);2组SREBP-1基因rs9902941位点基因型分布和隐性模型(TT/CT+CC)分布、SREBP-2基因rs7288536位点基因型分布及显性模型(TT/CT+CC)和相加模型(CT/TT+CC)分布、FBXW7基因rs10033601位点基因型分布和隐性模型(GG/AG+AA)分布比较差异均有统计学意义(P<0.05);多因素logistic回归校正性别、年龄、吸烟、饮酒、血压、血糖及血脂等影响因素后,SREBP-1基因rs9902941位点隐性模型、FBXW7基因rs10033601位点隐性模型及SREBP-2基因rs7288536位点相加模型为冠心病的独立危险因素(OR=1.900,95%CI:1.041~3.467,P=0.036;OR=1.670,95%CI:1.054~2.645,P=0.029;OR=1.578,95%CI:1.133~2.197,P=0.007)。结论在新疆维吾尔族人群中,FBXW7基因rs10033601多态性、SREBP-1基因rs9902941多态性和SREBP-2基因rs7288536多态性与冠心病发生具有相关性。展开更多
Background:Accumulated studies have demonstrated that Kruppel‑like factor 5(KLF5),a transcription factor,plays an important role in regulating cell proliferation and tissue remodeling through the expression of its dow...Background:Accumulated studies have demonstrated that Kruppel‑like factor 5(KLF5),a transcription factor,plays an important role in regulating cell proliferation and tissue remodeling through the expression of its downstream genes.KLF5‑related factors are expected to be involved in the healing process after myocardial injury or myocardial ischemic changes,especially for the forensic diagnosis of myocardial ischemic physiopathology.Aim and Objectives:This study aimed to explore the discrimination ability and applicability of KLF5-related factors in SCD caused by MI compared with other causes of death to provide further insights into the forensic diagnosis of myocardial ischemic pathology.Materials and Methods:The relative quantification of F‑Box and WD Repeat Domain Containing 7(FBW7),KLF5,factor‑binding protein(FGFBP)1,and FGFBP2 messenger RNAs(mRNAs)in myocardial tissue samples was performed using real‑time fluorescence quantitative reverse transcription polymerase chain reaction.KLF5 and FGFBP1/2 protein levels were examined using immunohistochemistry(IHC).The forensic autopsy cases(27 in total,autopsy within 72 h postmortem)included seven cases of acute myocardial infarction and 10 cases of acute myocardial ischemia.There were 10 cases in the control group,including four cases of traffic injury one case of injury by fall from height,one case of electric death,and four cases of blunt force injury.Results:Characteristic results were found in myocardial samples from three groups of deaths:KLF5 and FGFBP1 mRNA levels were significantly elevated in the infarction and ischemia groups,while FBW7 mRNA levels were significantly decreased.FBW7 is an important ubiquitin ligase that can mediate the degradation of KLF5 protein.In addition,FBW7 and FGFBP2 mRNA levels were decreased in the infarction group compared with the ischemia group.The IHC results were consistent with the observed mRNA expression patterns.Conclusions:Quantitative detection of FBW7,KLF5,FGFBP1,and FGFBP2 mRNA transcripts in myocardial tissues supports the pathophysiological study of myocardial ischemic diseases and provides molecular pathological evidence for forensic discrimination of death causes.展开更多
文摘目的探讨F框/WD40域蛋白7(F-box and WD-40domain protein7,FBXW7)和胆固醇调节元件结合蛋白(sterol regulatory element binding proteins,SREBPs)基因多态性与新疆地区维吾尔族人群冠心病的相关性。方法 360例维吾尔族冠心病患者(冠心病组)和373例维吾尔族健康受试者(对照组),2组采用改良的多重高温连接酶检测反应基因分型技术分析FBXW7、SREBP-1和SREBP-2基因多态性位点,检测2组血压和血生化指标,比较2组基因频率分布情况,并采用多因素logistic回归分析冠心病的独立危险因素。结果冠心病组吸烟、饮酒比率,合并高血压、糖尿病、高脂血症发生率,空腹血糖、三酰甘油、总胆固醇、低密度脂蛋白胆固醇水平均高于对照组(P<0.05),高密度脂蛋白胆固醇水平低于对照组(P<0.05);2组SREBP-1基因rs9902941位点基因型分布和隐性模型(TT/CT+CC)分布、SREBP-2基因rs7288536位点基因型分布及显性模型(TT/CT+CC)和相加模型(CT/TT+CC)分布、FBXW7基因rs10033601位点基因型分布和隐性模型(GG/AG+AA)分布比较差异均有统计学意义(P<0.05);多因素logistic回归校正性别、年龄、吸烟、饮酒、血压、血糖及血脂等影响因素后,SREBP-1基因rs9902941位点隐性模型、FBXW7基因rs10033601位点隐性模型及SREBP-2基因rs7288536位点相加模型为冠心病的独立危险因素(OR=1.900,95%CI:1.041~3.467,P=0.036;OR=1.670,95%CI:1.054~2.645,P=0.029;OR=1.578,95%CI:1.133~2.197,P=0.007)。结论在新疆维吾尔族人群中,FBXW7基因rs10033601多态性、SREBP-1基因rs9902941多态性和SREBP-2基因rs7288536多态性与冠心病发生具有相关性。
基金supported by the Beijing Natural Science Foundation(grant number 7192121,China)General Program of National Natural Science Foundation of China(grant number 81971796,China).
文摘Background:Accumulated studies have demonstrated that Kruppel‑like factor 5(KLF5),a transcription factor,plays an important role in regulating cell proliferation and tissue remodeling through the expression of its downstream genes.KLF5‑related factors are expected to be involved in the healing process after myocardial injury or myocardial ischemic changes,especially for the forensic diagnosis of myocardial ischemic physiopathology.Aim and Objectives:This study aimed to explore the discrimination ability and applicability of KLF5-related factors in SCD caused by MI compared with other causes of death to provide further insights into the forensic diagnosis of myocardial ischemic pathology.Materials and Methods:The relative quantification of F‑Box and WD Repeat Domain Containing 7(FBW7),KLF5,factor‑binding protein(FGFBP)1,and FGFBP2 messenger RNAs(mRNAs)in myocardial tissue samples was performed using real‑time fluorescence quantitative reverse transcription polymerase chain reaction.KLF5 and FGFBP1/2 protein levels were examined using immunohistochemistry(IHC).The forensic autopsy cases(27 in total,autopsy within 72 h postmortem)included seven cases of acute myocardial infarction and 10 cases of acute myocardial ischemia.There were 10 cases in the control group,including four cases of traffic injury one case of injury by fall from height,one case of electric death,and four cases of blunt force injury.Results:Characteristic results were found in myocardial samples from three groups of deaths:KLF5 and FGFBP1 mRNA levels were significantly elevated in the infarction and ischemia groups,while FBW7 mRNA levels were significantly decreased.FBW7 is an important ubiquitin ligase that can mediate the degradation of KLF5 protein.In addition,FBW7 and FGFBP2 mRNA levels were decreased in the infarction group compared with the ischemia group.The IHC results were consistent with the observed mRNA expression patterns.Conclusions:Quantitative detection of FBW7,KLF5,FGFBP1,and FGFBP2 mRNA transcripts in myocardial tissues supports the pathophysiological study of myocardial ischemic diseases and provides molecular pathological evidence for forensic discrimination of death causes.
