This study aimed to explore the effect of Bifidobacterium animalis F1-7 on the improvement of atherosclerotic inflammation.Arteriosclerosis model ApoE^(-/-)mice were orally administered with B.animalis F1-7 for 12 wee...This study aimed to explore the effect of Bifidobacterium animalis F1-7 on the improvement of atherosclerotic inflammation.Arteriosclerosis model ApoE^(-/-)mice were orally administered with B.animalis F1-7 for 12 weeks.The probiotic intervention reduced the plaque areas in aorta and the accumulation of macrophages,and downregulated the expression of toll-like receptor 4(TLR4)/nuclear factorκB(NF-κB)pathway to reduce the levels of inflammatory factors.The widely-targeted metabolomics analysis showed that acetyl-L-carnitine(ALC)in the intestine of atherosclerotic mice was significantly increased after B.animalis F1-7 intervention.Correlation analysis proved that ALC was associated with atherosclerotic inflammatory response.By using oxidized low density lipoprotein induced macrophage foam cells,we further verified that ALC could reduce lipid accumulation and inflammatory response in foam cells by downregulating the TLR4/NF-κB pathway.Finally,our results revealed that B.animalis F1-7 upregulated the metabolite ALC to downregulate the inflammatory responses,leading to the reduction of plaque accumulation of atherosclerosis.展开更多
目的:探讨高效液相色谱法(HPLC)血红蛋白A2/F/A1c检测在β-地中海贫血筛查中的应用。方法:收集本院2020年7月-2022年7月在本院行婚前检验的2642人次临床资料,均采用全自动血红蛋白分析仪检测红细胞指数及异常血红蛋白、RDB法分析β-地...目的:探讨高效液相色谱法(HPLC)血红蛋白A2/F/A1c检测在β-地中海贫血筛查中的应用。方法:收集本院2020年7月-2022年7月在本院行婚前检验的2642人次临床资料,均采用全自动血红蛋白分析仪检测红细胞指数及异常血红蛋白、RDB法分析β-地贫基因型,并分别应用HPLC血红蛋白A2/F/A1c检测试剂(研究试剂盒)及对比试剂盒(VARIANTⅡβ-thalassemia Short Program)进行HbA2检测,评估血红蛋白A2/F/A1c试剂筛查β-地中海贫血效果。结果:共筛查2642人次,筛查β-地中海贫血阳性率7.0%,其中β-地贫轻型177例,中间型4例,重型3例;根据HPLC中异常Hb滞留时间、总Hb占比及色谱图形特征,共发现5种异常Hb;采用RDB法共检测到7种β-地贫基因型,以CD41-42(-TCTT)、IVS-Ⅱ-654(C-T)、CD17(A-T)和-28(A-G)最为常见,重型β-地贫基因型为IVS-Ⅱ-654(C-T),中间型基因型为-28(A-G)纯合子;研究试剂盒与对照试剂盒检测阳性符合率为97.8%,阴性符合率为99.9%,总体符合率为99.7%。结论:HPLC技术人为因素影响小,适用于大规模人群筛查;血红蛋白A2/F/A1c试剂检测HbA2具有方便快捷、费用低廉、准确性高等优势,在临床筛查β-地贫应用效果较好。展开更多
基金supported by Shandong Taishan industry leading talent project(LJNY202101)the National Key R&D of China(2018YFC0311201)。
文摘This study aimed to explore the effect of Bifidobacterium animalis F1-7 on the improvement of atherosclerotic inflammation.Arteriosclerosis model ApoE^(-/-)mice were orally administered with B.animalis F1-7 for 12 weeks.The probiotic intervention reduced the plaque areas in aorta and the accumulation of macrophages,and downregulated the expression of toll-like receptor 4(TLR4)/nuclear factorκB(NF-κB)pathway to reduce the levels of inflammatory factors.The widely-targeted metabolomics analysis showed that acetyl-L-carnitine(ALC)in the intestine of atherosclerotic mice was significantly increased after B.animalis F1-7 intervention.Correlation analysis proved that ALC was associated with atherosclerotic inflammatory response.By using oxidized low density lipoprotein induced macrophage foam cells,we further verified that ALC could reduce lipid accumulation and inflammatory response in foam cells by downregulating the TLR4/NF-κB pathway.Finally,our results revealed that B.animalis F1-7 upregulated the metabolite ALC to downregulate the inflammatory responses,leading to the reduction of plaque accumulation of atherosclerosis.
文摘目的:探讨高效液相色谱法(HPLC)血红蛋白A2/F/A1c检测在β-地中海贫血筛查中的应用。方法:收集本院2020年7月-2022年7月在本院行婚前检验的2642人次临床资料,均采用全自动血红蛋白分析仪检测红细胞指数及异常血红蛋白、RDB法分析β-地贫基因型,并分别应用HPLC血红蛋白A2/F/A1c检测试剂(研究试剂盒)及对比试剂盒(VARIANTⅡβ-thalassemia Short Program)进行HbA2检测,评估血红蛋白A2/F/A1c试剂筛查β-地中海贫血效果。结果:共筛查2642人次,筛查β-地中海贫血阳性率7.0%,其中β-地贫轻型177例,中间型4例,重型3例;根据HPLC中异常Hb滞留时间、总Hb占比及色谱图形特征,共发现5种异常Hb;采用RDB法共检测到7种β-地贫基因型,以CD41-42(-TCTT)、IVS-Ⅱ-654(C-T)、CD17(A-T)和-28(A-G)最为常见,重型β-地贫基因型为IVS-Ⅱ-654(C-T),中间型基因型为-28(A-G)纯合子;研究试剂盒与对照试剂盒检测阳性符合率为97.8%,阴性符合率为99.9%,总体符合率为99.7%。结论:HPLC技术人为因素影响小,适用于大规模人群筛查;血红蛋白A2/F/A1c试剂检测HbA2具有方便快捷、费用低廉、准确性高等优势,在临床筛查β-地贫应用效果较好。
