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Which neurotransmitters are released when nicotine activates nicotinic acetylcholine receptors?
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When nicotine binds to and activates nicotinic acetylcholine receptors in the brain and nervous system, it stimulates the release of several key neurotransmitters. These include:
- Dopamine: Its release within the brainās reward pathways reinforces nicotine use and contributes to the substance's highly addictive properties.123
- Norepinephrine: Involved in the physiological effects of nicotine, such as increased heart rate and alertness.12
- Acetylcholine: The primary neurotransmitter that nicotine mimics by binding to its specific receptors.124
- Serotonin: Also released as part of the neurological response to nicotine, influencing mood and other cognitive functions.2
The release of these neurotransmitters collectively influences attention, learning, mood, heart rate, and reward systems.12