Addiction Biology

Question

Nicotine primarily stimulates release of which neurotransmitter contributing to addiction?

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1. **Mechanism of Nicotine**: Nicotine acts as an agonist for nicotinic acetylcholine receptors in the brain.
2. **Reward Pathway**: Activation of these receptors in the ventral tegmental area (VTA) leads to the release of **Dopamine** in the nucleus accumbens.
3. **Addiction**: Dopamine is the 'feel-good' neurotransmitter associated with pleasure and reward. This surge in dopamine reinforces smoking behavior, leading to dependence and addiction.
4. **Other Neurotransmitters**: While nicotine can affect GABA, serotonin, and glutamate, the primary reinforcement and addictive drive are mediated by the dopaminergic reward system.

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Addiction Biology

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