Abstract
Thrombotic events occurring in either arteries or veins are the primary causes of fatal perioperative cardiovascular events. Risk factors for deep vein thrombosis, several of which are evidently associated with specific surgical procedures, are quite different from those for arterial thrombosis (e.g., aging or atherosclerotic diseases). Thrombus formed in arteries consists mainly of platelets coated with fibrin (i.e., white thrombus), while venous thrombus formed at relatively lower shear stress consists of all blood components including erythrocytes as well as leukocytes infiltrated with fibrin (red thrombus). Clinical evidence indicates beneficial roles of neuraxial anesthesia/ analgesia in the prevention of VTE for patients undergoing high risk surgical procedures. To date, mechanisms of action of drugs used for neuraxial anesthesia/analgesia to prevent venous thrombosis are uncertain. However, accumulation of clinical as well as experimental findings points to the involvement of immune cells (especially monocytes) in red thrombus generation and to the interaction of anesthetics with these cells. We also suggest that adhesion molecules associated with the formation of monocyte platelet aggregates as well as substance P: neurokinin-1 receptor (SP/NK1R) pathway that involves neurogenic inflammation are crucial. Local anesthetics and NK1R antagonists are candidate drugs that may possess the capability to prevent venous thrombotic disorders in perioperative settings.
Keywords: Perioperative thrombosis, neuraxial anesthesia/analgesia, substance P, neurokinin-1 receptor, microparticle, tissue factor, monocyte, local anesthetics.
Current Pharmaceutical Design
Title:Mechanisms of Action of Anesthetics for the Modulation of Perioperative Thrombosis: Evidence for Immune Mechanisms from Basic and Clinical Studies
Volume: 20 Issue: 36
Author(s): Toshiharu Azma, Florin Tuluc, Taishin Ito, Chikako Aoyama-Mani, Shinji Kawahito and Hiroyuki Kinoshita
Affiliation:
Keywords: Perioperative thrombosis, neuraxial anesthesia/analgesia, substance P, neurokinin-1 receptor, microparticle, tissue factor, monocyte, local anesthetics.
Abstract: Thrombotic events occurring in either arteries or veins are the primary causes of fatal perioperative cardiovascular events. Risk factors for deep vein thrombosis, several of which are evidently associated with specific surgical procedures, are quite different from those for arterial thrombosis (e.g., aging or atherosclerotic diseases). Thrombus formed in arteries consists mainly of platelets coated with fibrin (i.e., white thrombus), while venous thrombus formed at relatively lower shear stress consists of all blood components including erythrocytes as well as leukocytes infiltrated with fibrin (red thrombus). Clinical evidence indicates beneficial roles of neuraxial anesthesia/ analgesia in the prevention of VTE for patients undergoing high risk surgical procedures. To date, mechanisms of action of drugs used for neuraxial anesthesia/analgesia to prevent venous thrombosis are uncertain. However, accumulation of clinical as well as experimental findings points to the involvement of immune cells (especially monocytes) in red thrombus generation and to the interaction of anesthetics with these cells. We also suggest that adhesion molecules associated with the formation of monocyte platelet aggregates as well as substance P: neurokinin-1 receptor (SP/NK1R) pathway that involves neurogenic inflammation are crucial. Local anesthetics and NK1R antagonists are candidate drugs that may possess the capability to prevent venous thrombotic disorders in perioperative settings.
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Azma Toshiharu, Tuluc Florin, Ito Taishin, Aoyama-Mani Chikako, Kawahito Shinji and Kinoshita Hiroyuki, Mechanisms of Action of Anesthetics for the Modulation of Perioperative Thrombosis: Evidence for Immune Mechanisms from Basic and Clinical Studies, Current Pharmaceutical Design 2014; 20 (36) . https://dx.doi.org/10.2174/1381612820666140204102044
DOI https://dx.doi.org/10.2174/1381612820666140204102044 |
Print ISSN 1381-6128 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4286 |
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