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Extremely elevated HDL-cholesterol levels are not associated with increased carotid intima-media thickness: data from ELSA Brasil

Extremely elevated HDL-cholesterol levels are not associated with increased carotid intima-media thickness: data from ELSA Brasil

Journal of Clinical Lipidology 10(4): 898-904.E1

There is evidence that extremely elevated high-density lipoprotein cholesterol (HDL-c), that is, hyperalphalipoproteinemia (HALP) may indicate dysfunctional HDL, conferring increased cardiovascular risk. We studied carotid intima-media thickness (cIMT) a marker of subclinical vascular disease according to HDL-c distribution. cIMT was studied in subjects with "normal" HDL-c levels (HDL-c 40-50 mg/dL for men; 50-60 mg/dL for women, mean 49.6 ± 5.7 mg/dL, n = 3226); in those with HALP (HDL-c ≥90 mg/dL for both sexes, mean 101.2 ± 10 mg/dL, n = 264) and according to HDL-c quintile distribution (n = 9779). Multiple linear regression was used to test the association of HDL-c and cIMT. Subjects with HALP were older (54.5 ± 9.6 vs 51.1 ± 8.8 years, P < .001); more frequently females (86.4% vs 49%, P < .001); and presented a lower burden of risk factors: hypertension (24.6% vs 32.7%, P = .009), diabetes (10.2% vs 20.4%, P < .001), and obesity (18.6% vs 37.6%, P < .001). A similar profile was seen with higher HDL-c quintiles in the whole study population. When compared to normal HDL-c values, HALP was associated with lower maximal cIMT (0.779 ± 0.189 mm vs 0.818 ± 0.200 mm, P = .002), and there was a lower prevalence of individuals with cIMT ≥ 75(th) percentile for age and gender or high cIMT (17.5% vs 26.2%, P = .003). After multivariate analysis, no association was seen between HALP and increasing cIMT values, indeed the 5(th) HDL-c quintile was associated with lower risk of high cIMT (OR = 0.80; 95% CI = 0.68-0.95). HALP is associated with lower cIMT and does not indicate a pro-atherogenic phenotype.

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Accession: 057851042

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PMID: 27578121

DOI: 10.1016/j.jacl.2016.03.007

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