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  • Title: Elevated striatal dopamine transporters during acute cocaine abstinence as measured by [123I] beta-CIT SPECT.
    Author: Malison RT, Best SE, van Dyck CH, McCance EF, Wallace EA, Laruelle M, Baldwin RM, Seibyl JP, Price LH, Kosten TR, Innis RB.
    Journal: Am J Psychiatry; 1998 Jun; 155(6):832-4. PubMed ID: 9619159.
    Abstract:
    OBJECTIVE: The authors examined whether striatal dopamine transporters were altered in acutely (96 hours or less) abstinent cocaine-abusing subjects, as suggested by postmortem studies. METHOD: [123I] beta-CIT and single photon emission computed tomography were used to assess striatal dopamine transporter levels in 28 cocaine-abusing subjects and 24 comparison subjects matched as a group for age and gender. RESULTS: Results showed a significant (approximately 20%) elevation in striatal V3" values in acutely abstinent cocaine-abusing subjects relative to comparison subjects. An inverse correlation between dopamine transporter level and Hamilton Depression Rating Scale score was also observed. CONCLUSIONS: These findings indicate more modest elevations in striatal dopamine transporters in cocaine-abusing subjects than noted in previous postmortem reports and suggest a possible relationship between cocaine-related depression and dopamine transporter binding.
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