The effects of scopolamine and traumatic brain injury on central cholinergic neurons

A. Saija, Bruce G Lyeth, B. G. Lyeth, C. E. Dixon, T. Yamamoto, G. L. Clifton, R. L. Hayes

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

This study examined the effects of scopolamine and fluid percussion traumatic brain injury (TBI) on the activity of cholinergic neurons in specific areas of the rat brain 12 min, 4 h, and 24 h after injury. Acetylcholine (ACh) turnover, used as an index of cholinergic neuronal activity, was determined using gas chromatography-mass fragmentography. Scopolamine pretreatment prevented significant increases in dorsal pontine ACh turnover at 12 min and 4 h after TBI, suggesting that the drug's protective actions against the neurologic deficits following TBI may involve blockade of cholinergic neuronal activation as well as postsynaptic muscarinic blockade. The responses of thalamic, hippocampal, and amygdaloid cholinergic neurons to TBI did not differ substantially in scopolamine-pretreated rats from those studied previously in untreated fluid-percussion-injured rats. However, cholinergic neurons in the cingulate-frontal cortex of rats receiving TBI did respond in a different manner to scopolamine than those of rats receiving sham injury, suggesting a disruption of regulation of cortical cholinergic neurons following this model of TBI.

Original languageEnglish (US)
Pages (from-to)161-170
Number of pages10
JournalJournal of Neurotrauma
Volume5
Issue number2
StatePublished - 1988
Externally publishedYes

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Cholinergic Neurons
Scopolamine Hydrobromide
Cholinergic Agents
Percussion
Acetylcholine
Protective Agents
Gyrus Cinguli
Wounds and Injuries
Frontal Lobe
Neurologic Manifestations
Gas Chromatography
Traumatic Brain Injury
Brain

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)

Cite this

Saija, A., Lyeth, B. G., Lyeth, B. G., Dixon, C. E., Yamamoto, T., Clifton, G. L., & Hayes, R. L. (1988). The effects of scopolamine and traumatic brain injury on central cholinergic neurons. Journal of Neurotrauma, 5(2), 161-170.

The effects of scopolamine and traumatic brain injury on central cholinergic neurons. / Saija, A.; Lyeth, Bruce G; Lyeth, B. G.; Dixon, C. E.; Yamamoto, T.; Clifton, G. L.; Hayes, R. L.

In: Journal of Neurotrauma, Vol. 5, No. 2, 1988, p. 161-170.

Research output: Contribution to journalArticle

Saija, A, Lyeth, BG, Lyeth, BG, Dixon, CE, Yamamoto, T, Clifton, GL & Hayes, RL 1988, 'The effects of scopolamine and traumatic brain injury on central cholinergic neurons', Journal of Neurotrauma, vol. 5, no. 2, pp. 161-170.
Saija A, Lyeth BG, Lyeth BG, Dixon CE, Yamamoto T, Clifton GL et al. The effects of scopolamine and traumatic brain injury on central cholinergic neurons. Journal of Neurotrauma. 1988;5(2):161-170.
Saija, A. ; Lyeth, Bruce G ; Lyeth, B. G. ; Dixon, C. E. ; Yamamoto, T. ; Clifton, G. L. ; Hayes, R. L. / The effects of scopolamine and traumatic brain injury on central cholinergic neurons. In: Journal of Neurotrauma. 1988 ; Vol. 5, No. 2. pp. 161-170.
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