Mabel Toribio1, Tomas G Neilan2, Magid Awadalla2, Lauren A Stone1, Adam Rokicki2, Corinne Rivard1, Connor P Mulligan2, Diana Cagliero1, Lindsay T Fourman1, Takara L Stanley1, Jennifer E Ho3, Virginia A Triant4,5, Tricia H Burdo6, Michael D Nelson7, Lidia S Szczepaniak8, Markella V Zanni1. 1. Metabolism Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. 2. Cardiac MR PET, CT Program, Division of Cardiology, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. 3. Division of Cardiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. 4. Division of General Internal Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. 5. Division of Infectious Diseases, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts. 6. Department of Neuroscience, Temple University Lewis Katz School of Medicine, Philadelphia, Pennsylvania. 7. Applied Physiology and Advanced Imaging Laboratory, Department of Kinesiology, University of Texas at Arlington, Arlington, Texas. 8. MRS Consulting in Biomedical Research, Albuquerque, New Mexico.
Abstract
CONTEXT: Women with HIV (WHIV) on anti-retroviral therapy (ART) are living longer but facing heightened vulnerability to heart failure. OBJECTIVE: We investigated metabolic/hormonal/immune parameters relating to diastolic dysfunction-a precursor to heart failure-among WHIV without known cardiovascular disease (CVD). DESIGN AND OUTCOME MEASURES: Nineteen ART-treated WHIV and 11 non-HIV-infected women without known CVD enrolled and successfully completed relevant study procedures [cardiac magnetic resonance spectroscopy (MRS) and cardiac MRI]. Groups were matched on age and body mass index. Primary outcome measures included intramyocardial triglyceride content (cardiac MRS) and diastolic function (cardiac MRI). Relationships between intramyocardial triglyceride content and clinical parameters were also assessed. RESULTS: Among WHIV (vs non-HIV-infected women), intramyocardial triglyceride content was threefold higher [1.2 (0.4, 3.1) vs 0.4 (0.1, 0.5)%, P = 0.01], and diastolic function was reduced (left atrial passive ejection fraction: 27.2 ± 9.6 vs 35.9 ± 6.4%, P = 0.007). There was a strong inverse relationship between intramyocardial triglyceride content and diastolic function (ρ = -0.62, P = 0.004). Among the whole group, intramyocardial triglyceride content did not relate to chronologic age but did increase across the reproductive aging spectrum (P = 0.02). HIV status and reproductive aging status remained independent predictors of intramyocardial triglyceride content after adjusting for relevant cardiometabolic parameters (overall model R2 = 0.56, P = 0.003; HIV status P = 0.01, reproductive aging status P = 0.02). CONCLUSIONS: For asymptomatic WHIV, increased intramyocardial triglyceride content is associated with diastolic dysfunction. Moreover, relationships between intramyocardial triglyceride accumulation and women's reproductive aging are noted.
CONTEXT: Women with HIV (WHIV) on anti-retroviral therapy (ART) are living longer but facing heightened vulnerability to heart failure. OBJECTIVE: We investigated metabolic/hormonal/immune parameters relating to diastolic dysfunction-a precursor to heart failure-among WHIV without known cardiovascular disease (CVD). DESIGN AND OUTCOME MEASURES: Nineteen ART-treated WHIV and 11 non-HIV-infectedwomen without known CVD enrolled and successfully completed relevant study procedures [cardiac magnetic resonance spectroscopy (MRS) and cardiac MRI]. Groups were matched on age and body mass index. Primary outcome measures included intramyocardial triglyceride content (cardiac MRS) and diastolic function (cardiac MRI). Relationships between intramyocardial triglyceride content and clinical parameters were also assessed. RESULTS: Among WHIV (vs non-HIV-infectedwomen), intramyocardial triglyceride content was threefold higher [1.2 (0.4, 3.1) vs 0.4 (0.1, 0.5)%, P = 0.01], and diastolic function was reduced (left atrial passive ejection fraction: 27.2 ± 9.6 vs 35.9 ± 6.4%, P = 0.007). There was a strong inverse relationship between intramyocardial triglyceride content and diastolic function (ρ = -0.62, P = 0.004). Among the whole group, intramyocardial triglyceride content did not relate to chronologic age but did increase across the reproductive aging spectrum (P = 0.02). HIV status and reproductive aging status remained independent predictors of intramyocardial triglyceride content after adjusting for relevant cardiometabolic parameters (overall model R2 = 0.56, P = 0.003; HIV status P = 0.01, reproductive aging status P = 0.02). CONCLUSIONS: For asymptomatic WHIV, increased intramyocardial triglyceride content is associated with diastolic dysfunction. Moreover, relationships between intramyocardial triglyceride accumulation and women's reproductive aging are noted.
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