JOURNAL ARTICLE

Lipoprotein-associated phospholipase A(2) (Lp-PLA(2)) in acute coronary syndrome: relationship with low-density lipoprotein cholesterol

Bashar Jabor, Hong Choi, Isabelle Ruel, Anouar Hafiane, Walid Mourad, Jacques Genest
Canadian Journal of Cardiology 2013, 29 (12): 1679-86
24267807

BACKGROUND: Lipoprotein-associated phospholipase A2 (Lp-PLA2) might play a role in the formation of vulnerable atherosclerotic plaques. Its plasma distribution and mass in subjects with acute coronary syndrome (ACS) has yet to be characterized.

METHODS: We compared plasma levels of Lp-PLA2 in 24 patients within 48 hours of an ACS (acute) and 12 weeks after (recovery), in 26 patients with stable coronary artery disease and in 10 normal healthy control subjects. Lp-PLA2 mass was determined using enzyme-linked immunosorbent assay.

RESULTS: The ACS patients (mean age 57 ± 8.7 years) had high-sensitivity C-reactive protein (hsCRP) levels of 30.46 ± 57.57 mg/L (ACS acute) vs 1.69 ± 1.32 mg/L (ACS recovery). Plasma Lp-PLA2 levels were significantly higher in ACS acute subjects than in ACS recovery subjects (143.13 ± 60.88 ng/mL vs 88.74 ± 39.12 ng/mL; P < 0.0001). Interestingly, stable coronary artery disease patients had higher Lp-PLA2 levels than ACS recovery patients (121.72 ± 31.11 ng/mL vs 88.74 ± 39.12 ng/mL; P = 0.0018). There was a strong correlation between Lp-PLA2 and low-density lipoprotein (LDL) cholesterol (LDL-C) (r = 0.709; P < 0.0001) or changes in LDL (r = 0.449; P = 0.027), suggesting that the major determinant of plasma Lp-PLA2 is LDL-C. No significant correlations were observed between Lp-PLA2 and hsCRP or high-density lipoprotein (HDL) cholesterol. When separated using high-performance liquid chromatography, > 65%-70% of Lp-PLA2 mass was within the apolipoprotein B-containing lipoprotein fraction, with approximately 30%-35% on HDL fraction, with no significant change in distribution between ACS acute and recovery.

CONCLUSIONS: Subjects with an ACS have markedly increased Lp-PLA2 levels acutely related to LDL-C levels.

Full Text Links

Find Full Text Links for this Article

Discussion

You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read
24267807
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"