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Lipoprotein-associated phospholipase A2 and risk of venous thrombosis in older adults.
Tuesday,2012-11-06 12:09 America/Los_Angeles — eenright
| Title | Lipoprotein-associated phospholipase A2 and risk of venous thrombosis in older adults. |
| Publication Type | Journal Article |
| Year of Publication | 2008 |
| Authors | Olson, N, O'Meara, ES, Jenny, NS, Folsom, AR, Bovill, EG, Furberg, CD, Heckbert, SR, Psaty, BM, Cushman, M |
| Journal | Am J Hematol |
| Volume | 83 |
| Issue | 7 |
| Pagination | 524-7 |
| Date Published | 2008 Jul |
| ISSN | 1096-8652 |
| Keywords | 1-Alkyl-2-acetylglycerophosphocholine Esterase, Aged, Female, Humans, Male, Risk Factors, Venous Thrombosis |
| Abstract | <p>Lipoprotein-associated phospholipase A2 (Lp-PLA2) is an enzyme involved in inflammation and platelet function. Inherited deficiency and elevated levels are associated with atherosclerosis. Given potential common etiologies of atherosclerosis and venous thrombosis (VT), we hypothesized that low and high Lp-PLA2 would be associated with VT risk. Lp-PLA(2) mass and activity were measured in baseline samples of Cardiovascular Health Study participants (5,888 men and women age > or =65), excluding 354 reporting pre-baseline VT. The study endpoint was VT unrelated to cancer after 11.6 years follow-up. Hazard ratios were estimated using Cox proportional hazard models, adjusting for age, race, sex, and body-mass index. With 129 cases of VT, there was no association of Lp-PLA2 activity with risk. Adjusted hazard ratios were 1.19 (CI 0.62, 2.29) and 0.87 (CI 0.43, 1.76) for the lowest and highest decile, respectively, compared to the 10-25th percentile. Corresponding hazard ratios for Lp-PLA2 mass were 1.63 (CI 0.79, 3.34) and 1.33 (CI 0.61, 2.87). Results were robust to several definitions of low or high Lp-PLA2. While the association of Lp-PLA(2) levels with arterial disease events implies a role for this enzyme in atherogenesis, our findings suggest that it is not prothrombotic.</p> |
| DOI | 10.1002/ajh.21182 |
| Alternate Journal | Am J Hematol |
| PubMed ID | 18383322 |
| PubMed Central ID | PMC2596953 |
| Grant List | N01-HC-85085 / HC / NHLBI NIH HHS / United States R01 HL59367 / HL / NHLBI NIH HHS / United States N01HC55222 / HL / NHLBI NIH HHS / United States N01-HC-85082 / HC / NHLBI NIH HHS / United States N01 HC-55222 / HC / NHLBI NIH HHS / United States R01 HL059367-08 / HL / NHLBI NIH HHS / United States N01-HC-85079 / HC / NHLBI NIH HHS / United States N01HC85079 / HL / NHLBI NIH HHS / United States N01-HC-85084 / HC / NHLBI NIH HHS / United States N01-HC-85081 / HC / NHLBI NIH HHS / United States R01 HL059367 / HL / NHLBI NIH HHS / United States N01-HC-85086 / HC / NHLBI NIH HHS / United States N01HC85086 / HL / NHLBI NIH HHS / United States N01-HC-85083 / HC / NHLBI NIH HHS / United States N01-HC-85080 / HC / NHLBI NIH HHS / United States |