| Autor: |
Adam Hartley, Magapu Pradeep, Victor Van den Berg, Ameer Hamid Ahmed Khan, Hasan Ali Shah, Mohammed Allaf, Anna Chow, Mikhail Caga-Anan, Joseph Shalhoub, Wolfgang Koenig, Michael Fisher, Dorian O. Haskard, Ramzi Y. Khamis |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Antioxidants, Vol 11, Iss 2, p 271 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2076-3921 |
| DOI: |
10.3390/antiox11020271 |
| Popis: |
We aimed to investigate if major vascular surgery induces LDL oxidation, and whether circulating antibodies against malondialdehyde-modified LDL (MDA-LDL) alter dynamically in this setting. We also questioned relationships between these biomarkers and post-operative cardiovascular events. Major surgery can induce an oxidative stress response. However, the role of the humoral immune system in clearance of oxidized LDL following such an insult is unknown. Plasma samples were obtained from a prospective cohort of 131 patients undergoing major non-cardiac vascular surgery, with samples obtained preoperatively and at 24- and 72 h postoperatively. Enzyme-linked immunoassays were developed to assess MDA-LDL-related antibodies and complexes. Adverse events were myocardial infarction (primary outcome), and a composite of unstable angina, stroke and all-cause mortality (secondary outcome). MDA-LDL significantly increased at 24 h post-operatively (p < 0.0001). Conversely, levels of IgG and IgM anti-MDA-LDL, as well as IgG/IgM-MDA-LDL complexes and total IgG/IgM, were significantly lower at 24 h (each p < 0.0001). A smaller decrease in IgG anti-MDA-LDL related to combined clinical adverse events in a post hoc analysis, withstanding adjustment for age, sex, and total IgG (OR 0.13, 95% CI [0.03–0.5], p < 0.001; p value for trend |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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