Lipoprotein lipase and hepatic lipase: Their relationship with HDL subspecies Lp(A-I) and Lp(A-I,A-II)

Marian C. Cheung, Shalamar D. Sibley, Jerry P. Palmer, John F. Oram, John D. Brunzell

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

HDL subspecies Lp(A-I) and Lp(A-I,A-II) have different anti-atherogenic potentials. To determine the role of lipoprotein lipase (LPL) and hepatic lipase (HL) in regulating these particles, we measured these enzyme activities in 28 healthy subjects with well-controlled Type 1 diabetes, and studied their relationship with Lp(A-I) and Lp(A-I,A-II). LPL was positively correlated with the apolipoprotein A-I (apoA-I), cholesterol, and phospholipid mass in total Lp(A-I), and with the apoA-I in large Lp(A-I) (r ≥ 0.58, P ≥ 0.001). HL was negatively correlated with all the above Lp(A-I) parameters plus Lp(A-I) triglyceride (r ≥ -0.53, P ≤ 0.003). No correlation was detected between LPL and Lp(A-I,A-II). However, HL was inversely correlated with total Lp(A-I,A-II) phospholipid, and with large Lp(A-I,A-II) (r ≥ 0.50, P ≤ 0.006). Similar studies were performed with phospholipid transfer protein (PLTP). Only total Lp(A-I) triglyceride in women (not men) (r = 0.71, P = 0.009) was significantly correlated with PLTP activity. These observations indicate that LPL and HL play major roles in determining the level and composition of plasma Lp(A-I), particularly large Lp(A-I), but not with Lp (A-I,A-II) level. Furthermore, select correlations of LPL and/or HL with the apoA-I, cholesterol, and triglyceride of Lp(A-I) but not Lp(A-I,A-II) imply that the apoA-I and lipid of Lp(A-I) and Lp(A-I,A-II) are not fully equilibrated.

Original languageEnglish (US)
Pages (from-to)1552-1558
Number of pages7
JournalJournal of lipid research
Volume44
Issue number8
DOIs
StatePublished - Aug 2003

Keywords

  • High density lipoprotein size profile
  • Phospholipid transfer protein
  • Type 1 diabetes

Fingerprint Dive into the research topics of 'Lipoprotein lipase and hepatic lipase: Their relationship with HDL subspecies Lp(A-I) and Lp(A-I,A-II)'. Together they form a unique fingerprint.

Cite this