Frigo AC

References (2)

Title : Lipoprotein-associated phospholipase A2 single-nucleotide polymorphisms and cardiovascular events in patients with coronary artery disease - Maiolino_2015_J.Cardiovasc.Med.(Hagerstown)_16_29
Author(s) : Maiolino G , Lenzini L , Pedon L , Cesari M , Seccia TM , Frigo AC , Rossitto G , Caroccia B , Rossi GP
Ref : J Cardiovasc Med (Hagerstown) , 16 :29 , 2015
Abstract : AIMS: We tested the hypothesis that variations in the PLA2G7 gene encoding the lipoprotein-associated phospholipase A2 (Lp-PLA2), an enzyme deemed to have proatherogenic activity, affect the Lp-PLA2 levels and predicts cardiovascular events. METHODS: Using a prospective cohort study design, we investigated incident cardiovascular events as a function of the PLA2G7 gene for rs1805017, rs1805018, and rs1051931 single-nucleotide polymorphisms (SNPs) in 643 randomly selected white patients from the GENICA Study, who at baseline underwent coronary angiography, measurement of Lp-PLA2 mass and activity. Cardiovascular event-free survival was compared across the genotypes by Cox regression, propensity score matching, and haplotype analysis. RESULTS: The rs1805018 SNP did not follow the Hardy-Weinberg equilibrium and was not further explored. The rs1805017 GG genotype had a lower Lp-PLA2 mass and a higher Lp-PLA2 activity, thus suggesting that this SNP is functional. Long-term follow-up (median 7.8 years) was obtained in 75% of the cohort and allowed recording of incident cardiovascular events in 25.8% of the patients. On Cox regression analysis, the common rs1805017 GG genotype predicted acute myocardial infarction (AMI) [hazard ratio 1.75, 95% confidence interval (CI) 1.03-2.99, P=0.041]; this finding was confirmed on propensity score matching (82.6% AMI-free survival in GG vs. 94.4% in GA+AA, P=0.003). The rs1805017 and rs1051931 G/G haplotype was also associated with AMI (52.7 vs. 42.2%, P=0.026) and cardiovascular event incidence (49.5 vs. 41.7%, P=0.025). CONCLUSION: In high-risk coronary artery disease patients of European ancestry, the PLA2G7 rs1805017 GG genotype is associated with increased Lp-PLA2 plasma activity and AMI.
ESTHER : Maiolino_2015_J.Cardiovasc.Med.(Hagerstown)_16_29
PubMedSearch : Maiolino_2015_J.Cardiovasc.Med.(Hagerstown)_16_29
PubMedID: 24732951
Gene_locus related to this paper: human-PLA2G7

Title : Lipoprotein-associated phospholipase A2 activity predicts cardiovascular events in high risk coronary artery disease patients - Maiolino_2012_PLoS.One_7_e48171
Author(s) : Maiolino G , Pedon L , Cesari M , Frigo AC , Wolfert RL , Barisa M , Pagliani L , Rossitto G , Seccia TM , Zanchetta M , Rossi GP
Ref : PLoS ONE , 7 :e48171 , 2012
Abstract : OBJECTIVE: Lipoprotein-associated phospholipase A2 (Lp-PLA2) is deemed to play a role in atherosclerosis and plaque destabilization as demonstrated in animal models and in prospective clinical studies. However, most of the literature is either focused on high-risk, apparently healthy patients, or is based on cross sectional studies. Therefore, we tested the hypothesis that serum Lp-PLA2 mass and activity are useful for predicting cardiovascular (CV) events over the coronary atherosclerotic burden and conventional risk factors in high-risk coronary artery disease patients. METHODS AND RESULTS: In a prospective cohort study of 712 Caucasian patients, who underwent coronary angiography and measurement of both Lp-PLA2 mass and activity at baseline, we determined incident CV events at follow-up after splitting the patients into a high and a low Lp-PLA2 mass and activity groups based on ROC analysis and Youden index. Kaplan-Meier and propensity score matching analysis were used to compare CV event-free survival between groups. Follow-up data were obtained in 75% of the cohort after a median of 7.2 years (range 1-12.7 years) during which 129 (25.5%) CV events were observed. The high Lp-PLA2 activity patients showed worse CV event-free survival (66.7% vs. 79.5%, p=0.023) and acute coronary syndrome-free survival (75.4% vs. 85.6%, p=0.04) than those in low Lp-PLA2 group. CONCLUSIONS: A high Lp-PLA2 activity implies a worse CV prognosis at long term follow up in high-risk Caucasian patients referred for coronary angiography.
ESTHER : Maiolino_2012_PLoS.One_7_e48171
PubMedSearch : Maiolino_2012_PLoS.One_7_e48171
PubMedID: 23118945
Gene_locus related to this paper: human-PLA2G7