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Nontraditional serum lipid variables and recurrent stroke risk
Jong-Ho Park1, Juneyoung Lee1, Bruce Ovbiagele1
1From the Department of Stroke Neurology, Myongji Hospital, Goyang, Korea (J.-H.P.); Department of Biostatistics, College of Medicine, Korea University, Seoul, Korea (J.L.); and Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina (J.-H.P., B.O.).
Insights
The triglycerides/high-density lipoprotein cholesterol (HDL-C) ratio, not LDL-C, predicts recurrent stroke and vascular events. This lipid ratio may be a therapeutic target for stroke survivors.
Area of Science:
- Cardiovascular Medicine
- Neurology
- Lipidology
Background:
- Current stroke guidelines prioritize low-density lipoprotein cholesterol (LDL-C) for secondary prevention.
- Emerging evidence suggests other lipid parameters may also predict cardiovascular risk.
- The impact of nontraditional lipid variables on recurrent stroke risk remains under-investigated.
Purpose of the Study:
- To investigate the association of nontraditional lipid variables with recurrent ischemic stroke risk.
- To evaluate the predictive value of various lipid ratios and components for vascular events post-stroke.
Main Methods:
- Analysis of the Vitamin Intervention for Stroke Prevention study database (n=3680).
- Inclusion of recent noncardioembolic stroke patients with 2-year follow-up.
- Assessment of independent associations between baseline lipid variables and outcomes.
Main Results:
- Elevated triglycerides/high-density lipoprotein cholesterol (HDL-C) ratio independently predicted recurrent ischemic stroke and composite vascular events.
- The highest quintile of triglycerides/HDL-C ratio showed increased risk for stroke (aHR, 1.56) and composite events (aHR, 1.39).
- Elevated total cholesterol/HDL-C ratio predicted composite vascular events, but not recurrent stroke independently.
Conclusions:
- The triglycerides/HDL-C ratio is a significant predictor of vascular risk after stroke.
- This lipid ratio, unlike LDL-C, may serve as a potential therapeutic target for reducing global vascular risk in stroke patients.
- Further research is warranted to confirm the therapeutic role of targeting the triglycerides/HDL-C ratio.
Background And Purpose:
Expert consensus guidelines recommend low-density lipoprotein cholesterol as the primary serum lipid target for recurrent stroke risk reduction. However, mounting evidence suggests that other lipid parameters might be additional therapeutic targets or at least also predict cardiovascular risk. Little is known about the effects of nontraditional lipid variables on recurrent stroke risk.
Methods:
We analyzed the Vitamin Intervention for Stroke Prevention study database comprising 3680 recent (<120 days) noncardioembolic stroke patients followed up for 2 years. Independent associations of baseline serum lipid variables with recurrent ischemic stroke (primary outcome) and the composite end point of ischemic stroke/coronary heart disease/vascular death (secondary outcomes) were assessed.
Results:
Of all variables evaluated, only triglycerides/high-density lipoprotein cholesterol (HDL-C) ratio was consistently and independently related to both outcomes: compared with the lowest quintile, the highest triglycerides/HDL-C ratio quintile was associated with stroke (adjusted hazard ratio, 1.56; 95% confidence interval, 1.05-2.32) and stroke/coronary heart disease/vascular death (1.39; 1.05-1.83), including adjustment for lipid modifier use. Compared with the lowest quintile, the highest total cholesterol/HDL-C ratio quintile was associated with stroke/coronary heart disease/vascular death (1.45; 1.03-2.03). Low-density lipoprotein cholesterol/HDL-C ratio, non-HDL-C, elevated triglycerides alone, and low HDL-C alone were not independently linked to either outcome.
Conclusions:
Of various nontraditional lipid variables, elevated baseline triglycerides/HDL-C and total cholesterol/HDL-C ratios predict future vascular risk after a stroke, but only elevated triglycerides/HDL-C ratio is related to risk of recurrent stroke. Future studies should assess the role of triglycerides/HDL-C as a potential therapeutic target for global vascular risk reduction after stroke.
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