OBJECTIVE Lipoprotein-associated phospholipase A2 (Lp-PLA2) is a vascular-specific inflammatory enzyme, of which increases are associated with cardiovascular events. However, the relationship between circulating Lp-PLA2 levels and coronary plaque volume has not been clarified in patients with acute coronary syndrome (ACS). METHODS We studied 40 patients with ACS (age, 61.4 ± 8.0 years; male, ...

Lipoprotein-associated phospholipase A2 (Lp-PLA2) is a unique circulating phospholipase with inflammatory and oxidative activities and the limited data regarding the relationship between Lp-PLA2 and cognitive impairment are conflicted. We conducted a cross-sectional study including 1,374 Chinese adults recruited from 2010 to 2011, aiming to evaluate the relationship between Lp-PLA2 levels and t...

Chemotaxis toward different cyclic adenosine monophosphate (cAMP) concentrations was tested in Dictyostelium discoideum cell lines with deletion of specific genes together with drugs to inhibit one or all combinations of the second-messenger systems PI3-kinase, phospholipase C (PLC), phospholipase A2 (PLA2), and cytosolic Ca(2+). The results show that inhibition of either PI3-kinase or PLA2 inh...

Circulating lipoprotein-associated phospholipase A2 (Lp-PLA2) is a marker of inflammation that plays a critical role in atherogenesis; its inhibition may have antiatherogenic effects. Studies from the West of Scotland Coronary Prevention Study (WOSCOPS), Monitoring Trends and Determinants in Cardiovascular Diseases (MONICA) and Rotterdam cohorts have shown that Lp-PLA2 is an independent predict...

The phospholipase A2 (PLA2) family comprises a group of lipolytic enzymes that typically hydrolyze the sn-2 position of glycerophospholipids to give rise to fatty acids and lysophospholipids. The mammalian genome encodes more than 50 PLA2s or related enzymes, which are classified into several subfamilies on the basis of their structures and functions. From a general viewpoint, the PLA2 family h...

Phospholipase A2 (PLA2) treatment has been shown previously to stimulate the sodium-dependent high-affinity choline uptake system as assessed by both the specific binding of [3H]hemicholinium-3 ([ 3H]HCh-3) and the uptake of [3H]choline. In the present study, the specificity of PLA2-induced stimulation upon [3H]HCh-3 binding has been examined. PLA2, as well as phospholipase C (PLC), treatment o...

The presence of a phospholipase A2 (PLA2) activity in rabbit neutrophil membrane preparation that is able to release [1-14C]oleic acid from labelled Escherichia coli has been demonstrated. The activity is critically dependent on the free calcium concentration and marginally stimulated by GTP gamma S. More than 80% of maximal activity is reached at 10 microM-Ca2+. The chemotactic factor, fMet-Le...

Steered molecular dynamics (SMD) simulations were employed to investigate the extraction step of the lipid head group cleavage reaction by human synovial phospholipase A2 (PLA2) by pulling a lipid molecule from a monolayer of dilauroyl-phosphatidyl-ethanolamin lipids into the active site of PLA2 and into the aqueous phase. The results of the simulations were compared to draw inferences about th...

Lipoprotein-associated phospholipase A2 (Lp-PLA2) levels are associated with the development of atherosclerosis. We aimed to assess the genetic determinants of Lp-PLA2 activity and mass by genotyping multiple polymorphisms in PLA2G7, the gene encoding Lp-PLA2, among 1258 participants from the Chinese Multi-provincial Cohort Study-Beijing Project. The Sequenom MassARRAY system, Taqman assay and ...

OBJECTIVE To examine the association of lipoprotein-associated phospholipase A2 (Lp-PLA2) mass and activity with calcified coronary plaque in young adults. METHODS AND RESULTS Nested case-control study among CARDIA participants at the year 15 examination (2000 to 2001, 33 to 45 years old). Cases (n=266) were those with and controls (n=266) those without evidence of calcified coronary plaque b...