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Lipoprotein(a) identifies cardiovascular risk in childhood: the Australian Aboriginal Birth Cohort Study
Teresa E Cunningham1, Susan M Sayers, Gurmeet R Singh
1Menzies School of Health Research, Casuarina, Northern Territory, Australia. teresa.cunningham@menzies.edu.au
Insights
High lipoprotein(a) (Lp(a)) levels in Aboriginal children are linked to lipid-based cardiovascular disease (CVD) risk factors. Lp(a) is a more effective CVD marker than height, suggesting regular screening for children with a family history of early CVD.
Area of Science:
- Pediatric Cardiology
- Lipid Metabolism
- Public Health
Background:
- Lipoprotein(a) (Lp(a)) is an emerging cardiovascular disease (CVD) risk factor.
- Understanding Lp(a) profiles in diverse pediatric populations is crucial for early risk assessment.
- Australian Aboriginal children represent a unique population with potential distinct CVD risk factors.
Purpose of the Study:
- To characterize the lipoprotein(a) (Lp(a)) profile in Australian Aboriginal children.
- To investigate the association between Lp(a) concentrations and established cardiovascular disease (CVD) risk factors.
- To evaluate the role of anthropometric measures and non-genetic factors in Lp(a) levels.
Main Methods:
- Cross-sectional analysis within a longitudinal birth cohort study of Aboriginal children in the Darwin Health Region.
- Data collected between 1998-2001, with outcome measures including lipids, lipoproteins, anthropometrics, and CVD risk factors.
- Statistical analysis to determine relationships between Lp(a) and various risk indicators.
Main Results:
- Elevated Lp(a) concentrations significantly correlated with lipid-based CVD risk factors in both boys and girls.
- Height was the only significant anthropometric predictor of Lp(a) in girls.
- Maternal smoking and non-genetic factors did not significantly contribute to Lp(a) levels.
Conclusions:
- Lipoprotein(a) (Lp(a)) is a more effective cardiovascular disease (CVD) marker than anthropometric measures in this cohort.
- Regular screening for Lp(a) is recommended for children with a family history of premature CVD.
- Early identification of elevated Lp(a) can inform targeted CVD prevention strategies in Indigenous children.
Aim:
To describe the lipoprotein(a) (Lp(a))profile and its relationship to cardiovascular risk factors in Australian Aboriginal children.
Methods:
A cross-sectional study within a longitudinal birth cohort study in the Darwin Health Region (Northern Territory, Australia). Subjects were Aboriginal children born between 1987 and 1990 who were re-examined between 1998 and 2001. Outcome measures were cholesterol, triglycerides, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, apoB, apoA1, apoA1/B ratio, anthropometric measures, cardiovascular disease (CVD) risk factors, maternal smoking and nutrition.
Results:
At a mean age of 11.4 years, results showed that high concentrations of Lp(a) were significantly related to well-known lipid-based CVD risk factors for both boys and girls, and that only one anthropometric factor, height, was significant for girls. Non-genetic factors and maternal smoking were not found to be significant contributors to Lp(a) concentrations.
Conclusions:
Lp(a) should be considered as a more effective marker of CVD than anthropometric measures, and children from families with a history of premature CVD should be regularly screened for this factor.
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