1. Race and sex differences in HDL peroxide content among American adults with and without type 2 diabetes
- Author
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Flaherty, Shelby M, Wood, Elizabeth K, Ryff, Carol D, Love, Gayle D, Kelesidis, Theodoros, Berkowitz, Loni, Echeverría, Guadalupe, Rivera, Katherine, Rigotti, Attilio, and Coe, Christopher L
- Subjects
Medical Biochemistry and Metabolomics ,Biomedical and Clinical Sciences ,Nutrition and Dietetics ,Prevention ,Diabetes ,Nutrition ,Clinical Research ,Cardiovascular ,Atherosclerosis ,Metabolic and endocrine ,Black or African American ,Case-Control Studies ,Cholesterol ,HDL ,Diabetes Mellitus ,Type 2 ,Female ,Humans ,Lipid Peroxides ,Male ,Middle Aged ,Racial Groups ,Sex Factors ,United States ,White People ,Cholesterol ,Dyslipidemia lipid peroxidation ,Obesity ,HDL function ,Race ,Other Information and Computing Sciences ,Nutrition & Dietetics ,Medical biochemistry and metabolomics ,Nutrition and dietetics - Abstract
BackgroundHigh-density lipoprotein (HDL) plays a critical role in protection against atherosclerosic and cardiovascular disease (ASCVD). In addition to contributing to clearing excess vascular cholesterol, HDL particles exhibit antioxidative functions, helping to attenuate adverse effects of oxidized low-density lipoproteins. However, these beneficial properties can be undermined by oxidative stress, inflammation, and unhealthy lifestyles and diet, as well as influenced by race and sex. Thus, when assessing cardiovascular risk, it is important to consider multifactorial aspects of HDL, including antioxidant activity rather than just total amount and type of HDL-cholesterol (HDL-C) particles. Because prior research showed HDL peroxide content (HDLperox) can be inversely associated with normal anti-oxidant HDL activity, elevated HDLperox may serve as a bioindicator of HDL dysfunction.MethodsIn this study, data from a large national cohort of Americans was utilized to determine the impact of sex, race, and diabetes status on HDLperox in middle-aged and older adults. A previously developed cell-free fluorometric method was utilized to quantify HDLperox in serum depleted of apo-B containing lipoproteins.ResultsIn keeping with predictions, white men and diabetics exhibited HDLperox in the atypical upper range, suggestive of less functional HDL. White men had higher HDLperox levels than African American males (13.46 ± 6.10 vs. 10.88 ± 5.81, p
- Published
- 2022