BACKGROUND:Early reperfusion can effectively treat acute myocardial infarction(AMI) and reduce the mortality signif icantly. This study aimed to compare the role of plasma microRNA-1(miR-1) and cardiac troponin T(cTnT...BACKGROUND:Early reperfusion can effectively treat acute myocardial infarction(AMI) and reduce the mortality signif icantly. This study aimed to compare the role of plasma microRNA-1(miR-1) and cardiac troponin T(cTnT) in early diagnosis of AMI patients.METHODS:From May 2011 to May 2012,plasma samples were collected from 56 AMI patients and 28 non-AMI controls. The expression of plasma miR-1 was measured by quantitative reverse transcription-polymerase chain reaction(qRT-PCR),and the level of plasma cTnT was measured using electrochemiluminescence-based methods on an Elecsys 2010 Immunoassay Analyzer. SPSS 16.0 was used for the statistical analysis of the results. Data were expressed as mean±standard deviation unless otherwise described. The differences about clinical characteristics between the AMI patients and controls were tested using Student's t test or Fisher's exact test. The Mann-Whitney U test was conducted to compare the expression of microRNAs between the AMI patients and controls. MicroRNAs expression between different intervals of the AMI patients was compared using Wilcoxon's signed-rank test. The receiver operating characteristic(ROC) curve was established to discriminate the AMI patients from the controls.RESULTS:In the present study,the expression of plasma miR-1 was signifi cantly increased in the AMI patients compared with the healthy controls(P<0.01). The plasma miR-1 in the AMI patients decreased to the normal level at 14 days(P>0.05). The expression of plasma miR-1 was not related to the clinical characteristics of the study population(P>0.05). ROC curve analyses demonstrated that miR-1 was specifi c and sensitive for the early diagnosis of AMI,but not superior to cTnT.CONCLUSION:Plasma miR-1 could be used in the early diagnosis of AMI,but it is similar to cTnT.展开更多
多发性骨髓瘤(multiple myeloma,MM)合并心肌损伤者预后往往较差、死亡率高。心脏磁共振(cardiac magnetic resonance,CMR)不仅能表征和量化MM患者心肌淀粉样物质沉积,还能进行组织特征性成像,可用于检测MM患者心脏早期损伤,被认为是评...多发性骨髓瘤(multiple myeloma,MM)合并心肌损伤者预后往往较差、死亡率高。心脏磁共振(cardiac magnetic resonance,CMR)不仅能表征和量化MM患者心肌淀粉样物质沉积,还能进行组织特征性成像,可用于检测MM患者心脏早期损伤,被认为是评估心脏射血功能的“金标准”。本文就CMR各个序列及参数在MM并发心肌损伤的早期诊断、鉴别诊断及预后评估进行综述,有助于临床及影像学医师进一步了解并推动CMR在MM心肌损伤中的应用与发展。展开更多
基金supported by grants from the National Natural Science Foundation of China(81071030)the Science and Technology Foundation of Guangdong Province(2011B080701006)
文摘BACKGROUND:Early reperfusion can effectively treat acute myocardial infarction(AMI) and reduce the mortality signif icantly. This study aimed to compare the role of plasma microRNA-1(miR-1) and cardiac troponin T(cTnT) in early diagnosis of AMI patients.METHODS:From May 2011 to May 2012,plasma samples were collected from 56 AMI patients and 28 non-AMI controls. The expression of plasma miR-1 was measured by quantitative reverse transcription-polymerase chain reaction(qRT-PCR),and the level of plasma cTnT was measured using electrochemiluminescence-based methods on an Elecsys 2010 Immunoassay Analyzer. SPSS 16.0 was used for the statistical analysis of the results. Data were expressed as mean±standard deviation unless otherwise described. The differences about clinical characteristics between the AMI patients and controls were tested using Student's t test or Fisher's exact test. The Mann-Whitney U test was conducted to compare the expression of microRNAs between the AMI patients and controls. MicroRNAs expression between different intervals of the AMI patients was compared using Wilcoxon's signed-rank test. The receiver operating characteristic(ROC) curve was established to discriminate the AMI patients from the controls.RESULTS:In the present study,the expression of plasma miR-1 was signifi cantly increased in the AMI patients compared with the healthy controls(P<0.01). The plasma miR-1 in the AMI patients decreased to the normal level at 14 days(P>0.05). The expression of plasma miR-1 was not related to the clinical characteristics of the study population(P>0.05). ROC curve analyses demonstrated that miR-1 was specifi c and sensitive for the early diagnosis of AMI,but not superior to cTnT.CONCLUSION:Plasma miR-1 could be used in the early diagnosis of AMI,but it is similar to cTnT.
文摘多发性骨髓瘤(multiple myeloma,MM)合并心肌损伤者预后往往较差、死亡率高。心脏磁共振(cardiac magnetic resonance,CMR)不仅能表征和量化MM患者心肌淀粉样物质沉积,还能进行组织特征性成像,可用于检测MM患者心脏早期损伤,被认为是评估心脏射血功能的“金标准”。本文就CMR各个序列及参数在MM并发心肌损伤的早期诊断、鉴别诊断及预后评估进行综述,有助于临床及影像学医师进一步了解并推动CMR在MM心肌损伤中的应用与发展。