Reduction of myocardial lipid content assessed by H1 magnetic resonance spectroscopy in dyslipidemic patients after statins

Abstract

Abstract Background Dyslipidemia is one of the main modifiable risk factors for cardiovascular diseases, which accounts for one third of total deaths worldwide. Statin is considered the cornerstone therapy for treating dyslipidemic patients. H1 Cardiac magnetic resonance spectroscopy (MRS) is a special non-invasive, non-irradiating method for assessing myocardial lipid content in vivo in both health and disease. Aim To compare dyslipidemic patients and healthy individuals, and to detect the efficacy of statin on the myocardial lipid content in dyslipidemic patients to detect if there will be changes 6 months after starting statin therapy. Methods Laboratory lipid profile and myocardial lipid content had been measured by H1 MRS in thirty dyslipidemic patients and fifteen healthy matched age and sex individuals as a control group, then dyslipidemic patients were followed up 6 months after statin therapy at Cardiovascular Medicine and Radiology departments; Mansoura University Hospitals, Dakahlia Governorate, Egypt, during the period from January 2020 to October 2022. Results A total of thirty dyslipidemic patients were screened for lipid profile, myocardial lipid content by H1 MRS; 56.67% were male, with a mean age of 49 ± 9.19 years, and compared with fifteen healthy matched age and sex individuals as a control group. Laboratory lipid profile, and triglyceride lipid concentration by MRS were significantly higher in dyslipidemic group before initiating statin therapy compared to control group (p value, 0.001, 0.019 respectively). Median LDL levels were 161.10 ± 30.28 mg/dl before the start of statin therapy and were 114.27 ± 48.33 mg/dl after statin therapy (p < 0.001). There was a statistically significant reduction in triglyceride lipid concentration in dyslipidemic patients after 6 months of statin therapy: from 0.011 (0.001–0.55 (mmol/l), to 0.0025 (0.001–0.04 mmol/l) with a p value < 0.001. Conclusions Increased myocardial lipid content as measured by magnetic resonance spectroscopy was demonstrated in dyslipidemic patients in our study that decreased after 6 months of statin therapy.