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ARTICLES

Activities of lipoprotein lipase and hepatic triglyceride lipase in postheparin plasma of patients with low concentrations of HDL cholesterol.

B Blades, G L Vega, S M Grundy
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https://doi.org/10.1161/01.ATV.13.8.1227
Arteriosclerosis, Thrombosis, and Vascular Biology. 1993;13:1227-1235
Originally published August 1, 1993
B Blades
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G L Vega
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S M Grundy
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Abstract

Previous investigations have shown that abnormalities in the postheparin plasma levels of the lipolytic enzymes, lipoprotein lipase (LPL) and hepatic triglyceride lipase (HTGL), are correlated with variations in plasma high-density lipoprotein cholesterol (HDL-C) levels. The present study was performed to determine correlations between the postheparin plasma activities of these two enzymes and HDL levels in a sizable number of subjects with low HDL-C levels. Two types of low-HDL subjects were investigated: 159 male subjects with low HDL-C (< 40 mg/dL) and normal triglyceride (< 250 mg/dL) levels (the low-HDL group) and 80 male subjects with low HDL-C (< 40 mg/dL) and elevated triglyceride (> or = 250 mg/dL) levels (the low-HDL/high-TG group). Postheparin plasma activities of LPL and HTGL were determined in these two groups, and these levels were compared with those obtained from 51 normolipidemic (normal-HDL) male subjects. Postheparin LPL activities were significantly lower in the low-HDL and low-HDL/high-TG groups (mean +/- SD, 9.9 +/- 2.9 and 10.4 +/- 3.0 mmol/h per liter, respectively; P < .001 for both) compared with the normal-HDL group (12.5 +/- 3.7 mmol/h per liter). Conversely, postheparin HTGL activities were significantly higher in the low-HDL and low-HDL/high-TG groups (39.3 +/- 16.2 and 44.4 +/- 16.7 mmol/h per liter, respectively; P < .001 for both) compared with the normal-HDL group (29.7 +/- 11.3 mmol/h per liter). Consequently, mean LPL/HTGL ratios were markedly lower in the two low-HDL groups compared with the normal-HDL group.(ABSTRACT TRUNCATED AT 250 WORDS)

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August 1993, Volume 13, Issue 8
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    Activities of lipoprotein lipase and hepatic triglyceride lipase in postheparin plasma of patients with low concentrations of HDL cholesterol.
    B Blades, G L Vega and S M Grundy
    Arteriosclerosis, Thrombosis, and Vascular Biology. 1993;13:1227-1235, originally published August 1, 1993
    https://doi.org/10.1161/01.ATV.13.8.1227

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    Activities of lipoprotein lipase and hepatic triglyceride lipase in postheparin plasma of patients with low concentrations of HDL cholesterol.
    B Blades, G L Vega and S M Grundy
    Arteriosclerosis, Thrombosis, and Vascular Biology. 1993;13:1227-1235, originally published August 1, 1993
    https://doi.org/10.1161/01.ATV.13.8.1227
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