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  • Title: Hyperalphalipoproteinemia, birth to age to years.
    Author: Tsang RC, Neely K, Glueck CJ.
    Journal: Pediatr Res; 1981 Jan; 15(1):66-9. PubMed ID: 7208170.
    Abstract:
    Interrelationships of high-density lipoprotein cholesterol (C-HDL) with total plasma cholesterol (TC), triglyceride, and low-density lipoprotein cholesterol, as well as longitudinal maintenance of C-HDL rank order (tracking) from birth to age 2 years were assessed in 76 hypercholesterolemic neonates (cord blood, TC greater than 95 mg/dl) with focus upon 34 hyperalphalipoproteinemic neonates who had cord blood C-HDL greater than 61 mg/dl, greater than or equal to the 99th percentile. Cord blood C-HDL correlated closely (P less than 0.01) with C-HDL at 6, 12, and 18 to 24 months (r = 0.32, 0.49, and 0.39, respectively). C-HDL levels at 12 months and 18 to 24 months were closely associated (r = 0.68 and P less than 0.01). C-HDL at birth, 6, and 12 months correlated positively (P less than 0.01) with TC levels (r = 0.28, 0.30, and 0.36, respectively). Conversely, C-HDL at birth, 6 and 12 months correlated inversely with TG (P less than 0.01) (r = -0.41, -0.40, and -0.49, respectively). At birth and at 18 to 24 months, C-HDL correlated inversely (P less than 0.05) with C-LDL (r = -0.36 and -0.31, respectively). Of neonates having cord blood C-HDL in the highest quartile, 38, 56, and 60%, respectively at ages 6, 12, and 18 to 24 months retained C-HDL levels in the highest quartile; 56, 75, and 70%, respectively, retained C-HDL levels greater than the 50th percentile. Of 13 neonates having the highest initial cord blood C-HDL levels, cord blood C-HDL greater than or equal to 69 mg/dl, nine had one or more C-HDL values greater than 70 mg/dl (the 90th percentile for childhood), throughout the 12- to 60-month follow-up period. Moreover, where more than one follow-up measurement was available, there was relative stability of elevated C-HDL measurements. Many infants with cord blood hyperalphalipoproteinemia are likely to have persistent elevations of C-HDL at ages 1 and 2 years. If they maintain elevated C-HDL into adulthood, they may, speculatively, be at reduced risk for coronary heart disease, given the strong inverse association of C-HDL with coronary heart disease.
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