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Atrial Fibrillation and Lipid-related Indices in Japanese Men: An Age-matched Case-control Study
1Department of Preventive Medicine, School of Medicine, Hyogo Medical University, Nishinomiya, Japan wakabaya@hyo-med.ac.jp.
Insights
Certain lipid indices like LAP and GGT/HDL-C are linked to atrial fibrillation (AF), while LDL-C/HDL-C is inversely associated. A new AF risk index (AFRI) shows promise for predicting AF risk.
Area of Science:
- Cardiology
- Metabolic Syndrome
- Lipidology
Background:
- Atrial fibrillation (AF) is linked to cardiovascular risk factors.
- The predictive value of lipid-related indices for AF remains unclear.
- Existing indices like LDL-C/HDL-C, TG/HDL-C, LAP, CMI, and GGT/HDL-C are established cardiovascular disease predictors.
Purpose of the Study:
- To investigate the association between various lipid-related indices and atrial fibrillation (AF).
- To evaluate the potential of these indices, including novel ones, in predicting AF risk.
Main Methods:
- A case-control study involving 154 men with AF and 308 age-matched controls.
- Comparison of cardiovascular risk factors and lipid indices between AF and control groups.
- Development and evaluation of a novel AF risk index (AFRI).
Main Results:
- Lipid Accumulation Product (LAP) and Gamma-Glutamyltransferase/High-Density Lipoprotein Cholesterol (GGT/HDL-C) were significantly higher in the AF group.
- Low-Density Lipoprotein Cholesterol/High-Density Lipoprotein Cholesterol (LDL-C/HDL-C) was significantly lower in the AF group.
- The novel AF Risk Index (AFRI) demonstrated a stronger association with AF than individual risk factors.
Conclusions:
- LAP and GGT/HDL-C show a positive association with AF.
- LDL-C/HDL-C exhibits an inverse association with AF.
- AFRI may serve as a valuable biomarker for AF risk stratification.
Background/Aim:
Atrial fibrillation (AF) is associated with cardiovascular risk factors. Although certain lipid-related indices, including the ratio of low-density lipoprotein (LDL) cholesterol to high-density lipoprotein (HDL) cholesterol (LDL-C/HDL-C), the ratio of triglycerides to HDL-C (TG/HDL-C), lipid accumulation product (LAP), cardiometabolic index (CMI) and the ratio of gamma-glutamyltransferase to HDL-C (GGT/HDL-C), are known to predict cardiovascular disease, their relationship with AF is unclear.
Patients And Methods:
The participants included 154 men (median of age: 66 years) with AF and 308 age-matched men without AF. Cardiovascular risk factors, including obesity indices, blood pressure, blood lipids and hemoglobin A1C, as well as lipid-related indices, were compared between the groups with and without AF.
Results:
Body mass index, waist circumference and GGT were significantly higher or larger in participants with AF than in those without AF, while LDL-C was significantly lower in the AF group than in the control group. TG, HDL-C and hemoglobin A1C were not significantly different between the two groups. LAP and GGT/HDL-C were significantly higher and LDL-C/HDL-C was significantly lower in the AF group than in the control group, whereas TG/HDL-C and CMI were not significantly different between the two groups. Then, a new lipid-related index (AF risk index: AFRI), defined as the product of waist circumference and GGT divided by LDL-C, was proposed and shown to be associated with AF more strongly than each cardiovascular risk factor alone.
Conclusion:
LAP and GGT/HDL-C were positively associated with AF, whereas LDL-C/HDL-C was inversely associated with AF. AFRI may be a useful marker for discriminating the risk of AF.
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