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Posts Tagged ‘dopamine’

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“Research from McGill University suggests that people who are vulnerable to developing alcoholism exhibit a distinctive brain response when drinking alcohol, according to a new study by Prof. Marco Leyton, of McGill University’s Department of Psychiatry. Compared to people at low risk for alcohol-use problems, those at high risk showed a greater dopamine response in a brain pathway that increases desire for rewards.”

“We found that people vulnerable to developing alcoholism experienced an unusually large brain dopamine response when they took a drink,” said Leyton. “This large response might energize reward-seeking behaviors and counteract the sedative effects of alcohol. Conversely, people who experience minimal dopamine release when they drink might find the sedative effects of alcohol especially pronounced.”

via Alcoholism could be linked to a hyper-active brain dopamine system.

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Depression induced or cured within 10 seconds in rats by turning on or off neurons that release dopamine in the ventral tegmental area of the brain with the help of optogenetics (previously changing neurons to make them be turned on or off by focusing light on them). 10 seconds is shorter than the time that antidepressants usually take to work, which is some weeks. Treatment with magnesium may work within one week, and could be combined for best results with vitamin D, vitamin B12, folic acid, and omega-3.

via Stimulating dopamine-releasing neurons in the ventral tegmental area immediately extinguishes depression in mice. | MIT Technology Review.

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