Marshall J Glesby1, David B Hanna2, Donald R Hoover3, Qiuhu Shi4, Michael T Yin5, Robert Kaplan2, Phyllis C Tien6,7, Mardge Cohen8, Kathryn Anastos2, Anjali Sharma9. 1. Division of Infectious Diseases, Department of Medicine, Weill Cornell Medical College, New York, NY. 2. Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY. 3. Department of Statistics and Biostatistics, Institute for Health, Health Care Policy and Aging Research, Rutgers the State University of New Jersey, New Brunswick, NJ. 4. Department of Epidemiology and Community Health School of Health Sciences and Practice, New York Medical College, Valhalla, NY. 5. Department of Medicine, Columbia University, New York, NY. 6. Department of Medicine, University of California-San Francisco, San Francisco, CA. 7. Department of Veterans Affairs, San Francisco, CA. 8. Department of Medicine, John H. Stroger, Jr. Hospital of Cook County, Chicago, IL. 9. Department of Medicine, Albert Einstein College of Medicine, Bronx, NY.
Abstract
BACKGROUND: Data on associations between abdominal fat depot mass and subclinical atherosclerosis are limited, especially in women with HIV. METHODS: We assessed cross-sectional associations of dual X-ray absorptiometry scan-derived estimates of visceral adipose tissue (VAT) and abdominal subcutaneous adipose tissue (SAT) with 3 measures of subclinical carotid artery atherosclerosis-carotid artery stiffness (Young's modulus of elasticity), presence of carotid artery lesions, and carotid artery intima-media thickness-in a subsample of participants in the Women's Interagency HIV Study. Statistical models adjusted for demographic variables, HIV serostatus, behavioral variables, and cardiovascular risk factors. RESULTS: There were 244 women with and 99 without HIV infection (median age 42, 62% black). VAT mass (but not SAT) was associated with greater carotid artery stiffness in a fully adjusted linear regression model, including adjustment for SAT (β = 11.3 log 10·N·m per kg VAT, 95% confidence interval: 1.0 to 21.7). Greater SAT mass was associated with lower odds of having a carotid artery lesion in a fully adjusted model, including adjustment for VAT [adjusted odds ratio, 0.49 per kg of SAT (0.25 to 0.94)]. Neither VAT nor SAT was associated with carotid artery intima-media thickness. The VAT/SAT ratio was not statistically associated with any of the outcomes after covariate adjustment. CONCLUSIONS: In our cross-sectional study of women, the majority of whom had HIV, greater VAT mass was associated with increased carotid artery stiffness, whereas greater SAT mass was associated with a reduced odds of prevalent carotid artery lesions.
BACKGROUND: Data on associations between abdominal fat depot mass and subclinical atherosclerosis are limited, especially in women with HIV. METHODS: We assessed cross-sectional associations of dual X-ray absorptiometry scan-derived estimates of visceral adipose tissue (VAT) and abdominal subcutaneous adipose tissue (SAT) with 3 measures of subclinical carotid artery atherosclerosis-carotid artery stiffness (Young's modulus of elasticity), presence of carotid artery lesions, and carotid artery intima-media thickness-in a subsample of participants in the Women's Interagency HIV Study. Statistical models adjusted for demographic variables, HIV serostatus, behavioral variables, and cardiovascular risk factors. RESULTS: There were 244 women with and 99 without HIV infection (median age 42, 62% black). VAT mass (but not SAT) was associated with greater carotid artery stiffness in a fully adjusted linear regression model, including adjustment for SAT (β = 11.3 log 10·N·m per kg VAT, 95% confidence interval: 1.0 to 21.7). Greater SAT mass was associated with lower odds of having a carotid artery lesion in a fully adjusted model, including adjustment for VAT [adjusted odds ratio, 0.49 per kg of SAT (0.25 to 0.94)]. Neither VAT nor SAT was associated with carotid artery intima-media thickness. The VAT/SAT ratio was not statistically associated with any of the outcomes after covariate adjustment. CONCLUSIONS: In our cross-sectional study of women, the majority of whom had HIV, greater VAT mass was associated with increased carotid artery stiffness, whereas greater SAT mass was associated with a reduced odds of prevalent carotid artery lesions.
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