Chu MP, Many G, Isquith DA, McKeeth S, Williamson J, Neradilek MB, Colletti P, Zhao XQ. Metabolic and inflammatory risk reduction in response to lipid-lowering and lifestyle modification in the medically underserved individuals.
Am J Prev Cardiol 2021;
7:100227. [PMID:
34401861 PMCID:
PMC8358155 DOI:
10.1016/j.ajpc.2021.100227]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 07/20/2021] [Accepted: 07/24/2021] [Indexed: 10/26/2022] Open
Abstract
Introduction
Medically underserved (US) populations have an increased level of atherosclerotic cardiovascular disease (ASCVD) risk, however, few studies investigated ASCVD risk reduction in US.
Methods
Of 217 subjects with ApoB ≥120 mg/dL and carotid atherosclerosis (≥15% stenosis by ultrasound) enrolled in the Carotid Plaque Composition by MRI (CPC) study between 2005 and 2011, US (n=33) was defined as those without adequate healthcare insurance, while AS (n=184) included those with adequate healthcare coverage. All subjects received atorvastatin-based lipid therapies and lifestyle intervention for 2 years. Metabolic and inflammatory risk factors were compared between AS and US.
Results
At baseline, compared to AS, US displayed higher levels of metabolic and inflammatory risk including systolic blood pressure (140±27 vs. 131±18 mmHg, p=0.04), fasting glucose (125±59 vs. 102±22 mg/dL, p=0.03) and fasting insulin (39±33 vs. 28±20 µU/dL, p=0.03) which resulted in higher insulin resistance (HOMA-IR 2.2±0.4 vs. 1.3±0.1, p=0.03), and hsCRP (5.6±1.5 vs. 2.8±0.2 mg/L, p=0.03). Over 2 years of intervention, US and AS showed similar reductions in LDL-C (-10.7% vs. -16% per year, p=0.2), triglycerides (-16.7% vs. -15.9% per year, p=0.4), and hsCRP (-0.11% vs. -0.04% per year, p=0.1). However, US continued to show significantly higher levels of fasting blood glucose (115±6.0 vs. 101±2.0 mg/dL, p=0.03) and HOMA-IR (1.9±0.2 vs. 1.5±0.1, p=0.047), and hsCRP (3.9±0.7 vs. 1.9±0.2 mg/L, p<0.001) than AS following 2 years of interventions.
Conclusions
US displayed higher ASCVD risk than AS at baseline and over 2 years despite similar reductions following the intervention. These findings highlight the unmet needs for improved intervention strategies and implementation methods for ASCVD risk reduction in US.
Clinical Trial Registration
NCT00715273 at ClinicalTrials.gov.
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