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Abstract
The effects of chronic cocaine exposure on dopamine D1 and D2 receptor gene expression in the human brain were studied in postmortem samples from
chronic cocaine abusing and matched control subjects. Using in situ hybridization
and receptor autoradiography to examine messenger ribonucleic acid (RNA) and binding
sites, respectively, neither D1 nor D2 receptor expression was found to be changed in the nucleus accumbens, caudate, putamen,
or substantia nigra of the cocaine-exposed subjects. Although chronic cocaine exposure
can produce alterations in dopaminergic neurotransmission, sustained compensatory
changes in dopamine receptor expression do not appear to occur in the human.
Keywords
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Article info
Publication history
Received in revised form:
June 3,
1993
Received:
March 3,
1993
Footnotes
☆Dr. Meador-Woodruff is the recipient of a Research Scientist Development Award from NIMH (MH00818). This work was also supported by MH42251 (SJW) and The Foundation of Hope for Research and Treatment of Mental Illness (KYL).
Identification
Copyright
© 1993 Published by Elsevier Inc.