Analysis of Changes in Myocardial Enzyme Indexes and miR-26b and miR-19b Expression in Peripheral Blood of Patients with Toxic Myocarditis and the Relationship with Prognosis
WANG Xiaofang, LIN Lin, LEI Lei, et al
The Second Affiliated Hospital of Xi'an Jiaotong University, Shaanxi Xi'an 710000, China
Abstract:Objective: To investigate the changes of myocardial enzymology indexes in peripheral blood,serum micrornA-26b (miR-26b),micrornA-19b (miR-19b) and their relationship with prognosis in patients with viral myocarditis. Methods: A total of 116 patients with viral myocarditis admitted to our hospital from November 2020 to August 2022 were selected as the myocarditis group,and 60 cases non-myocarditis volunteers who underwent physical examinations during the same period were selected as the control group.The myocardial enzyme indicators,serum miR-26b,and miR-19b levels of the two groups were compared,and the patients were grouped based on the 6-month follow-up prognosis.The general information and research indicators of the two groups were compared.Logistic regression analysis was used to identify relevant indicators that affected the prognosis of patients with viral myocarditis. Results: The expression levels of ALT,AST,LDH,cTnI,CK-MB,CK,and miR-19b in patients with myocarditis were higher than those in the control group,and the difference was statistically significant (P<0.05); the relative expression intensity of miR-26b in patients with myocarditis was lower than that in the control group,and the difference was statistically significant (P<0.05); according to a 6-month follow-up,there were 36 patients with poor prognosis,including 2 deaths,18 hospitalizations for recurrent heart failure,9 hospitalizations for arrhythmia,and 7 relapses of myocarditis; there was no statistically significant difference in age,BMI,gender and chest pain between the group with good prognosis and the group with poor prognosis (P>0.05); the systolic blood pressure and diastolic blood pressure in the poor prognosis group were lower than those in the good prognosis group,and the heart rate,chest tightness,myocardium,fatigue,respiratory rate,atrial flutter/atrial fibrillation,atrioventricular block and bundle branch block in the poor prognosis group were higher than those in the good prognosis group,with a statistically significant difference (P<0.05); the expression levels of ALT,AST,LDH,cTnI,CK-MB,CK and miR-19b in patients with poor prognosis were higher than those in patients with good prognosis,and the difference was statistically significant (P<0.05); the relative expression intensity of miR-26b in patients with poor prognosis was lower than that in patients with good prognosis,and the difference was statistically significant (P<0.05); the results of logistic regression analysis showed that atrial flutter/atrial fibrillation,atrioventricular block,bundle branch block,increased ALT,AST,LDH,cTnI,CK-MB,CK,miR-19b and miR-26b were independent risk factors for poor prognosis in patients with myocarditis (P<0.05). Conclusion: In patients with viral myocarditis,peripheral blood myocardial enzymology indexes and miR-19b expression were significantly increased,and miR-26b expression was significantly decreased,which was closely related to poor prognosis of patients.
王小芳, 林琳, 雷蕾, 鲁红娥, 雷朝, 刘基燕. 病毒性心肌炎患者外周血心肌酶谱和miR-26b miR-19b表达变化分析及与预后的关系[J]. 河北医学, 2023, 29(7): 1114-1119.
WANG Xiaofang, LIN Lin, LEI Lei, et al. Analysis of Changes in Myocardial Enzyme Indexes and miR-26b and miR-19b Expression in Peripheral Blood of Patients with Toxic Myocarditis and the Relationship with Prognosis. HeBei Med, 2023, 29(7): 1114-1119.