Increasing evidence has identified the unsaturated aldehyde acrolein (ACR) as the potential factor that causes deoxyribonucleic acid cross-linking and the development of chronic diseases. The objective of this study was to investigate the mechanism by which theophylline (TP) scavenges ACR for the first time. TP efficiently scavenged ACR through forming adducts, which was demonstrated in a system in which TP was incubated with ACR at different ratios for different times for liquid chromatography with tandem mass spectrometry. Then, the mono-and di-ACR-TP adducts were purified, and their structures were elucidated by high-resolution mass spectrometry and nuclear magnetic resonance analysis. We found that the ACR residue on mono-ACR-TP further trapped one more ACR and formed di-ACR-TP adducts. Furthermore, mono-and di-ACR-TP had similar timedependent ACR-scavenging activity to TP. Finally, we demonstrated that green tea, coffee, and cocoa inhibited ACR by trapping ACR to form mono-and di-ACR-TP adducts during the incubation of green tea, coffee, and cocoa with ACR.
Background
Hypertension is a vital risk factor for heart failure, while cardiac rehabilitation can effectively improve cardiac function of heart failure patients. This study aimed to determine the impact of cardiac rehabilitation on microRNA-423-5p in hypertensive patients with heart failure with a moderately reduced ejection fraction.
Methods
Sixty hypertensive patients with heart failure with a moderately reduced ejection fraction were randomly divided into cardiac rehabilitation group and positive control group with 30 cases per group, while 30 hypertensive patients without heart failure were recruited as negative control group. The cardiac rehabilitation group and positive control group were treated with 1-month cardiac rehabilitation combined with the routine treatment and routine treatment only, respectively. The New York Heart Association classification, 6-minute walking test, and color Doppler echocardiography were adopted to detect cardiac function. Meanwhile, the expression of microRNA-423-5p and N-terminal pro-B-type natriuretic peptide was determined via Real-Time Fluorescence Quantitative PCR and electrochemiluminescence immunoassay. The diagnostic potential of microR-423-5p and N-terminal pro-B-type natriuretic peptide was assessed by ROC curve analysis and multivariate linear regression model.
Results
Patients in cardiac rehabilitation group displayed significantly lower expression of microR-423-5p and better results of New York Heart Association classification, 6-minute walking test, and color Doppler echocardiography than those in positive control group (
P
< .05). ROC analysis showed that microR-423-5p (AUC = 0.785; 95% CI: 0.686-0.865; sensitivity = 73.33%; specificity = 73.33%) had better specificity and accuracy than N-terminal pro-B-type natriuretic peptide (AUC = 0.721; 95% CI: 0.617-0.811; sensitivity = 81.67%; specificity = 63.33%).
Conclusion
MicroR-423-5p was implicated in left ventricular hypertrophy and might be a potential biomarker for assessing the therapeutic effect of cardiac rehabilitation on hypertensive patients with heart failure with a moderately reduced ejection fraction.
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