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Serotonin 5-HT2 receptors and brain circulation
1International Pharmacological Department, International Division, Lipha, Lyon, France.
Journal of Cardiovascular Pharmacology
|January 1, 1990
Summary
Serotonin (5-HT) significantly contributes to brain ischemia by causing vasoconstriction and platelet aggregation. Blocking 5-HT2 receptors may mitigate these harmful effects in ischemic stroke.
Area of Science:
- Neuroscience
- Pharmacology
- Pathophysiology
Background:
- Most research on serotonin's role in ischemia focuses on the brain due to high 5-HT accumulation.
- The central nervous system is susceptible to 5-HT increases from neuronal and platelet sources.
Purpose of the Study:
- To review the current understanding of serotonin's role in brain ischemia.
- To highlight the pathophysiological consequences of serotonin in ischemic conditions.
Main Methods:
- Literature review of existing evidence on serotonin and brain ischemia.
- Analysis of experimental and clinical pharmacology data regarding 5-HT2 receptors.
Main Results:
- Serotonin (5-HT) exacerbates brain ischemia through vasoconstriction, edema, platelet aggregation, and blood sludging.
- 5-HT2 receptors are identified as the primary mediators of these detrimental effects.
Conclusions:
- Serotonin plays a critical role in the induction and progression of brain ischemia.
- Targeting 5-HT2 receptors with antagonists shows potential for therapeutic intervention in ischemic stroke.