Effects of ethanol and nomifensine on NE clearance in the cerebellum of young and aged Fischer 344 rats

Anya M.Y. Lin, Paula C. Bickford, Michael R. Palmer, Elizabeth J. Cline, Greg A. Gerhardt

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14 Scopus citations


Rapid chronoamperometric recordings coupled with local application of drugs by pressure ejection were used to investigate the effects of nomifensine and ethanol (EtOH) on exogenous norepinephrine (NE) clearance in the cerebellum of young (5-month-old) and aged (24-26-month-old) male Fischer 344 rats. In the young rats, local nomifensine application prolonged exogenous NE clearance, indicating transporter mediated uptake inhibition. NE clearance was modestly but significantly prolonged in the aged rats as compared to the young rats, suggesting less efficient uptake. Consistent with this, there was little effect of nomifensine on NE clearance in the aged rats. In contrast to the effect of nomifensine, EtOH inhibited NE clearance in both young and aged rats. These data further support the hypothesis that one effect of EtOH in cerebellar NE systems is inhibition of NE uptake into NE-containing nerve terminals, and they also demonstrate that the effect of nomifensine on exogenous NE clearance in vivo in the cerebellum is altered by the aging process, while the effect of EtOH is not.

Original languageEnglish
Pages (from-to)287-292
Number of pages6
JournalBrain Research
Issue number1-2
StatePublished - May 9 1997

Bibliographical note

Funding Information:
The authors thank David Young for his help with statistical analysis. This work was supported by USPHS grants AA05915, AA00102 and AG06434 and the Veteran Administration Medical Research Services. M.R.P is supported by an ADAMHA Research Scientist Development Award. A.M.-Y. Lin is supported by an Educational grant #27051F from National Science Council and Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan, The Republic of China. G.A.G. also received support from a Level II Research Scientist Development Award, MH01245.


  • Age
  • Cerebellar cortex
  • Ethanol
  • Fischer 344 rat
  • Nomifensine
  • Norepinephrine
  • Uptake

ASJC Scopus subject areas

  • General Neuroscience
  • Molecular Biology
  • Clinical Neurology
  • Developmental Biology


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