Cardiovascular complications in inflammatory bowel disease
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Rudolf Schicho, Gunther Marsche, Martin Storr1
1Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Austria. rudolf.schicho@medunigraz.at.
Insights
Inflammatory bowel disease (IBD) patients face higher cardiovascular disease risks due to shared inflammation and gut microbiota changes. These factors contribute to endothelial dysfunction and atherosclerosis, increasing cardiac event likelihood.
Area of Science:
- Gastroenterology and Cardiology
- Immunology and Microbiology
Background:
- Inflammatory bowel disease (IBD) and cardiovascular disease (CVD) are chronic inflammatory conditions.
- Shared pathophysiological mechanisms link IBD and increased CVD risk.
Purpose of the Study:
- To explore the intricate relationship between IBD and cardiovascular disease.
- To elucidate the underlying mechanisms connecting these two chronic inflammatory conditions.
Main Methods:
- Review of existing studies linking IBD and CVD.
- Analysis of shared inflammatory pathways, including cytokines and C-reactive protein (CRP).
- Investigation of lipid profiles, coagulation factors, and gut microbiota's role in IBD-associated CVD.
Main Results:
- IBD patients exhibit elevated cytokines, CRP, and homocysteine, promoting endothelial dysfunction and atherosclerosis.
- Altered lipid profiles and increased coagulation factors in IBD patients predispose to thromboembolic events.
- Gut microbiota dysbiosis and microbial translocation contribute to systemic inflammation and atherogenesis in IBD.
Conclusions:
- A significant link exists between IBD and cardiovascular disease, supported by retrospective studies.
- Inflammation, endothelial dysfunction, and gut microbiome alterations are key mechanisms.
- Further research is needed to fully determine the causal pathways.
Abstract:
Over the past years, a growing number of studies have indicated that patients suffering from inflammatory bowel disease (IBD) have an increased risk of developing cardiovascular disease. Both are chronic inflammatory diseases and share certain pathophysiological mechanisms that may influence each other. High levels of cytokines, C-reactive protein (CRP), and homocysteine in IBD patients may lead to endothelial dysfunction, an early sign of atherosclerosis. IBD patients, in general, do not show the typical risk factors for cardiovascular disease but changes in lipid profiles similar to the ones seen in cardiovascular events have been reported recently. Higher levels of coagulation factors frequently occur in IBD which may predispose to arterial thromboembolic events. Finally, the gut itself may have an impact on atherogenesis during IBD through its microbiota. Microbial products are released from the inflamed mucosa into the circulation through a leaky barrier. The induced rise in proinflammatory cytokines could contribute to endothelial damage, artherosclerosis and cardiovascular events. Although large retrospective studies favor a link between IBD and cardiovascular diseases, the mechanisms behind still remain to be determined.
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