Publication Date:
1978-07-21
Description:
Silicone pellets containing d-amphetamine base were implanted subcutaneously in rats. These pellets release amphetamine continuously for at least 10 days. Several days after implantation, swollen dopamine axons concomitant with large decreases in tyrosine hydroxylase activity were observed in the caudate nucleus. Decreased tyrosine hydroxylase activity was still present 110 days after pellet removal in the caudate but not in several other brain regions, nor in the caudate of rats injected with an equivalent amount of amphetamine in daily injections. This implies that continuous amphetamine administration has a selective neurotoxic effect on dopamine terminals in the caudate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ellison, G -- Eison, M S -- Huberman, H S -- Daniel, F -- New York, N.Y. -- Science. 1978 Jul 21;201(4352):276-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26975" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Catecholamines/*metabolism
;
Caudate Nucleus/cytology/*drug effects/metabolism
;
Dextroamphetamine/administration & dosage/*pharmacology
;
Dopamine/*metabolism
;
Drug Implants
;
Male
;
Norepinephrine/metabolism
;
Rats
;
Time Factors
;
Tyrosine 3-Monooxygenase/*metabolism
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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