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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.
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
November 1989,
Brain research,
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
September 1983,
Zhongguo yao li xue bao = Acta pharmacologica Sinica,
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
August 1996,
Journal of neurotrauma,
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
January 1990,
Progress in brain research,
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
January 1992,
Brain research,
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
May 1992,
Journal of neurotrauma,
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
August 2020,
Cell death & disease,
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
July 1993,
Brain research,
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
January 1998,
International journal of developmental neuroscience : the official journal of the International Society for Developmental Neuroscience,
A Saija, and
S E Robinson, and
B G Lyeth, and
C E Dixon, and
T Yamamoto, and
G L Clifton, and
R L Hayes
November 1992,
Neuropharmacology,
