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| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Westergren, Helena U. Svedlund, Sara Momo, Remi A. Blomster, Juuso I. Wåhlander, Karin Rehnström, Erika Greasley, Peter J. Fritsche-Danielson, Regina Oscarsson, Jan Gan, Li-Ming |
| Abstract | Background Patients with angina-like symptoms without myocardial perfusion scintigram (MPS)-verified abnormality may still be at risk for cardiovascular events. We hypothesized that insulin resistance could play a role in this population even without diagnosed diabetes. We further explored physiological and blood biomarkers, as well as global gene expression patterns that could be closely related to impaired glucose homeostasis to deepen our mechanistic understanding. Methods A total of 365 non-diabetic patients with suspected myocardial ischemia referred to MPS were enrolled and followed up regarding event-free survival with a median time of 5.1 years. All patients underwent endothelial function assessment by reactive hyperemic index (RHI) using EndoPAT and extensive biomarker analysis. Whole blood global gene expression pathway analysis was performed in a subset of patients. Results Homeostasis model assessment of insulin resistance (HOMA-IR) added independent prognostic value in patients without myocardial perfusion defects. In a multivariable analysis, HOMA-IR was inversely associated with low RHI. Furthermore, elevated HOMA-IR was associated with decreased levels of vascular endothelial growth factor D, stem cell factor and endocan as well as to increased level of interleukin-6. Global gene expression pathway analysis of whole blood cells showed that high HOMA-IR and impaired endothelial function were associated with upregulated pro-inflammatory pathways and down-regulated eukaryotic initiation factor-2 pathway. Conclusions Insulin resistance measured by HOMA-IR is associated with endothelial dysfunction and confers independent prognostic information in non-diabetic patients with chest pain without myocardial perfusion defects. Increased systemic pro-inflammatory state and decreased levels of pro-angiogenic vascular growth factors may be important underlying molecular mechanisms. |
| Related Links | https://cardiab.biomedcentral.com/counter/pdf/10.1186/s12933-016-0353-1.pdf |
| Ending Page | 12 |
| Page Count | 12 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| ISSN | 14752840 |
| DOI | 10.1186/s12933-016-0353-1 |
| Journal | Cardiovascular Diabetology |
| Issue Number | 1 |
| Volume Number | 15 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2016-02-19 |
| Access Restriction | Open |
| Subject Keyword | Diabetes Angiology Cardiology Non-obstructive coronary artery disease Insulin resistance Outcome Endothelial function Growth factors |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cardiology and Cardiovascular Medicine Internal Medicine Endocrinology, Diabetes and Metabolism |
| Journal Impact Factor | 8.5/2023 |
| 5-Year Journal Impact Factor | 8.9/2023 |
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