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[Factors associated with hypoalphalipoproteinemia]
Insights
Hypoalphalipoproteinemia (HALP) is linked to early heart attacks. Factors like high triglycerides, obesity, and smoking significantly lower HDL cholesterol, suggesting lifestyle changes are key for treatment.
Area of Science:
- Cardiovascular Medicine
- Lipid Metabolism
- Preventive Cardiology
Context:
- Hypoalphalipoproteinemia (HALP) is a common lipid disorder associated with premature myocardial infarction.
- It is defined by low levels of high-density lipoprotein cholesterol (cHDL), below the 10th percentile for age and sex.
- Understanding the factors contributing to HALP is crucial for early intervention and cardiovascular risk reduction.
Purpose:
- To determine the prevalence of factors associated with reduced cHDL levels in individuals with and without HALP.
- To identify the key modifiable risk factors contributing to HALP in a male population.
- To inform potential therapeutic strategies targeting lipid metabolism and cardiovascular health.
Summary:
- This study analyzed 1825 males, examining lifestyle factors, medical history, and lipid profiles.
- Results indicated higher rates of smoking, obesity (elevated BMI), and diabetes in subjects with HALP.
- Hypertriglyceridemia and hypocholesterolemia were significantly more prevalent in the HALP group.
- Regression analysis identified triglycerides, BMI, and smoking as independent predictors of decreased cHDL.
Impact:
- Identifies significant associations between modifiable lifestyle factors (smoking, obesity, high triglycerides) and HALP.
- Highlights the potential for lifestyle interventions to manage HALP and reduce associated cardiovascular risk.
- Provides evidence supporting the importance of addressing these factors in clinical practice for patients with low HDL cholesterol.
Background:
Hypoalphalipoproteinemia (HALP) is the most frequent lipid alteration found in patients with myocardial infarction at an early age. It is defined by amounts of lipid cholesterol at high density lipoproteins (cHDL) lower than 10% according to age and sex. The aim of this study was to know the frequency of main factors which reduce the levels of cHDL in a group of subjects with and without HALP.
Methods:
Pathological antecedents, consumption of drugs, alcohol and cigarettes, the presence of obesity and levels of cholesterol, triglycerides, cHDL, glucose and urea were studied in a group of 1825 males. The study was performed in the course of medical examinations for workers.
Results:
The consumption of cigarettes, the index of body mass (IBM) and the prevalence of diabetes mellitus were higher in the group of subjects with HALP. Hypertriglyceridemia (triglycerides > or = 200 mg/dl) was found in 31% of the subjects with HALP vs 10% in the control group (p < 0.001); hypocholesterolemia (cholesterol < or = 150 mg/dl) was also significantly greater (9.8% vs 4.3%, p < 0.01). Altogether, in 64% of the subjects with HALP, factors which may decrease cHDL were associated. Of the factors studied, the number of triglycerides, IBM and the number of cigarettes consumed per day were the independent factors which most significantly contributed to the decrease of cHDL in the regression analysis.
Conclusions:
Most of the subjects with hypoalphalipoproteinemia present other modifiable factors such as an elevated index of body mass, cigarette consumption and high amounts of triglicerydes, the correction of which constitutes the base for treatment of this disorder.