The DOI matches its Crossref record.
Lipoprotein-Associated Phospholipase A 2 , Platelet-Activating Factor Acetylhydrolase, Is Expressed by Macrophages in Human and Rabbit Atherosclerotic Lesions
Abstract
Abstract —We studied the expression of lipoprotein-associated phospholipase A 2 (Lp-PLA 2 ), an enzyme capable of hydrolyzing platelet-activating factor (PAF), PAF-like phospholipids, and polar-modified phosphatidylcholines, in human and rabbit atherosclerotic lesions. Oxidative modification of low-density lipoprotein, which plays an important role in atherogenesis, generates biologically active PAF-like modified phospholipid derivatives with polar fatty acid chains. PAF is known to have a potent proinflammatory activity and is inactivated by its hydrolysis. On the other hand, lysophosphatidylcholine and oxidized fatty acids released from oxidized low-density lipoprotein as a result of Lp-PLA 2 activity are thought to be involved in the progression of atherosclerosis. Using combined in situ hybridization and immunocytochemistry, we detected Lp-PLA 2 mRNA and protein in macrophages in both human and rabbit atherosclerotic lesions. Reverse transcriptase—polymerase chain reaction analysis indicated an increased expression of Lp-PLA 2 mRNA in human atherosclerotic lesions. In addition, ≈6-fold higher Lp-PLA 2 activity was detected in atherosclerotic aortas of Watanabe heritable hyperlipidemic rabbits compared with normal aortas from control rabbits. It is concluded that (1) macrophages in both human and rabbit atherosclerotic lesions express Lp-PLA 2 , which could cleave any oxidatively modified phosphatidylcholine present in the lesion area, and (2) modulation of Lp-PLA 2 activity could lead to antiatherogenic effects in the vessel wall.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Dennis, E. A., Cao, J., Hsu, Y.-H., Magrioti, V., & Kokotos, G. (2011) · Chemical Reviews · doi:10.1021/cr200085w · Cited by 1,203
Jellinger, P. S., Handelsman, Y., Rosenblit, P. D., Bloomgarden, Z. T., Fonseca, V. A., Garber, A. J., Grunberger, G., Guerin, C. K., Bell, D. S. H., Mechanick, J. I., et al. (2017) · Endocrine Practice · doi:10.4158/ep171764.appgl · Cited by 1,094
An Updated Review of Lysophosphatidylcholine Metabolism in Human Diseases
Law, S.-H., Chan, M.-L., Marathe, G. K., Parveen, F., Chen, C.-H., & Ke, L.-Y. (2019) · International Journal of Molecular Sciences · doi:10.3390/ijms20051149 · Cited by 817
Darapladib for Preventing Ischemic Events in Stable Coronary Heart Disease
The STABILITY Investigators (2014) · New England Journal of Medicine · doi:10.1056/nejmoa1315878 · Cited by 579
O’Donoghue, M. L., Braunwald, E., White, H. D., Steen, D. P., Lukas, M. A., Tarka, E., Steg, P. G., Hochman, J. S., Bode, C., Maggioni, A. P., et al. (2014) · JAMA · doi:10.1001/jama.2014.11061 · Cited by 456
Metadata
- Authors
- Häkkinen, T., Luoma, J. S., Hiltunen, M. O., Macphee, C. H., Milliner, K. J., Patel, L., Rice, S. Q., Tew, D. G., Karkola, K., & Ylä-Herttuala, S.
- Venue
- Arteriosclerosis, Thrombosis, and Vascular Biology
- Published
- 1999-12
- Volume
- 19
- Issue
- 12
- Pages
- 2909-2917
- ISSN
- 1079-5642 (ISSN-L)
- 1524-4636
- OpenAlex
- W2152460160
- Cited by
- 239
- References
- 0
- FWCI
- 1.50
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Lipoprotein-Associated Phospholipase A 2 , Platelet-Activating Factor Acetylhydrolase, Is Expressed by Macrophages in Human and Rabbit Atherosclerotic Lesions. https://app.cochat.ai/papers/10.1161/01.atv.19.12.2909
- The paper
- Häkkinen, T., Luoma, J. S., Hiltunen, M. O., Macphee, C. H., Milliner, K. J., Patel, L., Rice, S. Q., Tew, D. G., Karkola, K., & Ylä-Herttuala, S. (1999). Lipoprotein-Associated Phospholipase A 2 , Platelet-Activating Factor Acetylhydrolase, Is Expressed by Macrophages in Human and Rabbit Atherosclerotic Lesions. Arteriosclerosis, Thrombosis, and Vascular Biology. https://doi.org/10.1161/01.atv.19.12.2909
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
