OBJECTIVE: To determine if lipoprotein particle abnormalities correlate with arterial stiffness in children with type 1 diabetes (T1D). STUDY DESIGN: In this case-control study, we evaluated 70 children, 35 with T1D and 35 controls, ages 10-18 years, matched for age, sex, race, and BMI. Arterial stiffness was assessed by radial tonometry (AI75) and blood was collected for lipoprotein subclass analysis. RESULTS: T1D subjects had increased AI75, decreased small LDL particle concentration (P = 0.0067), increased large LDL particle concentration (P = 0.007), increased large HDL particle concentration (P = 0.0012), increased mean LDL particle size (P = 0.0028), and increased mean HDL particle size (P < 0.0001) compared to controls. No significant correlations were found between lipoprotein subclasses and arterial stiffness in T1D subjects. CONCLUSIONS: T1D subjects have increased arterial stiffness when compared to controls, despite a less pro-atherogenic lipoprotein profile, indicating the need to identify other risk factors that correlate with arterial stiffness in T1D youth.
OBJECTIVE: To determine if lipoprotein particle abnormalities correlate with arterial stiffness in children with type 1 diabetes (T1D). STUDY DESIGN: In this case-control study, we evaluated 70 children, 35 with T1D and 35 controls, ages 10-18 years, matched for age, sex, race, and BMI. Arterial stiffness was assessed by radial tonometry (AI75) and blood was collected for lipoprotein subclass analysis. RESULTS: T1D subjects had increased AI75, decreased small LDL particle concentration (P = 0.0067), increased large LDL particle concentration (P = 0.007), increased large HDL particle concentration (P = 0.0012), increased mean LDL particle size (P = 0.0028), and increased mean HDL particle size (P < 0.0001) compared to controls. No significant correlations were found between lipoprotein subclasses and arterial stiffness in T1D subjects. CONCLUSIONS: T1D subjects have increased arterial stiffness when compared to controls, despite a less pro-atherogenic lipoprotein profile, indicating the need to identify other risk factors that correlate with arterial stiffness in T1D youth.
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