Toll-like Receptors as Pro-Thrombotic Drivers in Viral Infections: A Narrative Review

Area of Science:

• Immunology
• Pathophysiology
• Vascular Biology

Background:

• Toll-like receptors (TLRs) are key mediators in viral infection pathogenesis.
• TLR activation induces pro-inflammatory responses that disrupt vascular homeostasis.
• Vascular injury promotes pro-thrombotic and pro-coagulatory states, leading to tissue damage.

Purpose of the Study:

• To review TLR signaling pathways involved in pro-thrombotic responses during viral infections.
• To highlight the role of TLRs in viral sensing and platelet activation.
• To discuss the impact of TLR-mediated thrombosis on patient outcomes, especially in cardiovascular disease.

Main Methods:

• Review of scientific literature on TLRs, viral infections, and thrombosis.
• Analysis of TLR signaling pathways and their pro-thrombotic effects.
• Focus on human TLRs and their clinical relevance.

Main Results:

• TLRs contribute to vascular dysfunction and thrombosis via inflammatory pathways.
• TLR-induced von Willebrand factor release and extracellular trap formation enhance thrombotic processes.
• TLR signaling directly impacts platelet activation during viral infections.

Conclusions:

• TLR-mediated pro-thrombotic responses are critical in viral infections.
• Understanding TLR pathways is crucial for managing thrombotic complications in viral infections, especially in patients with cardiovascular disease.
• Targeting TLR signaling may offer therapeutic strategies to improve outcomes.