Nida
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Transcript of Nida
HomelessnessCrimeViolence
HomelessnessCrimeViolence
NeurotoxicityAIDS, CancerMental illness
NeurotoxicityAIDS, CancerMental illness
Health careProductivityAccidents
Health careProductivityAccidents
Photo courtesy of the NIDA Web site. From A Slide Teaching Packet: The Brain and the Actions of Cocaine, Opiates, and Marijuana.
Your Brain on DrugsYour Brain on Drugs
1-2 Min 3-4 5-6
6-7 7-8 8-9
9-10 10-20 20-30
Photo courtesy of Nora Volkow, Ph.D. Mapping cocaine binding sites in human and baboon brain in vivo. Fowler JS, Volkow ND, Wolf AP, Dewey SL, Schlyer DJ, Macgregor RIR, Hitzemann R, Logan J, Bendreim B, Gatley ST. et al. Synapse 1989;4(4):371-377.
Your Brain After Your Brain After DrugsDrugs
Normal
Cocaine Abuser (10 days)
Cocaine Abuser (100 days)
Photo courtesy of Nora Volkow, Ph.D. Volkow ND, Hitzemann R, Wang C-I, Fowler IS, Wolf AP, Dewey SL. Long-term frontal brain metabolic changes in cocaine abusers. Synapse 11:184-190, 1992; Volkow ND, Fowler JS, Wang G-J, Hitzemann R, Logan J, Schlyer D, Dewey 5, Wolf AP. Decreased dopamine D2 receptor availability is associated with reduced frontal metabolism in cocaine abusers. Synapse 14:169-177, 1993.
Drugs HaveDrugs HaveLong-term Long-term ConsequencesConsequences
Photo courtesy of NIDA from research conducted by Melega WP, Raleigh MJ, Stout DB, Lacan C, Huang SC, Phelps ME.
Di Chiara et al., Neuroscience, 1999.,Fiorino and Phillips, J. Neuroscience, 1997.
Natural Rewards Elevate Dopamine Levels
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0 60 120 180
Time (min)
% o
f B
asal
DA
Ou
tpu
t NAc shell
Empty
Food Sex
Box Feeding
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Female Present
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0 1 2 3 4 5 hr
% o
f B
asal
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ease
DADOPACHVA
Accumbens
Amphetamine
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% o
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asal
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DADOPACHVA
AccumbensCocaine
Time After Drug
Morphine
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0 1 2 3 hr
Time After Drug
% o
f B
asal
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ease Accumbens
Caudate
Nicotine
Di Chiara and Imperato, PNAS, 1988
Effects of Drugs on Dopamine Release
% o
f B
asal
Rel
ease
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0 1 2 3 4 5 hr
Accumbens
0.51.02.510
Dose mg/kgmg/kg
mg/kgmg/kg
Control Addicted
Dopamine D2 Receptors are Decreased by Addiction
Functionally…
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ecep
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Ava
ilab
ility
CocaineCocaine
AlcoholAlcohol
HeroinHeroin
MethMeth
The Memory of DrugsThe Memory of Drugs
Nature VideoNature Video Cocaine VideoCocaine Video
Front of BrainFront of Brain
Back of BrainBack of Brain
AmygdalaAmygdalanot lit upnot lit up
AmygdalaAmygdalaactivatedactivated
Photo courtesy of Anna Rose Childress, Ph.D.
Rats Exposed to Nicotine in AdolescenceSelf-Administer More Nicotine
Than Rats First Exposed as Adults
Collins et al, Neuropharmacology, 2004, Levin et al, Psychopharmacology, 2003