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KMID : 0359319740140020207
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Korean Journal of Veterinary Research
1974 Volume.14 No. 2 p.207 ~ p.210
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Effects of Some Autonomic Drugs on the Intramural Nervous System of Isolated Jejunum of Chiken Pretreated with Reserpine
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Abstract
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Pharmacological investigation was performed in chickens which were pretreated with reserpine.
Transmural stimulations were given to the isolated jejunum of chickens and studied the responses and the effects of dibenamine, propranolol, atropine and tetrodotoxin on them.
The results obtained were summerized as follows:
1. Three different patterns of response were obtained from tole isolated jejunum of non-treated chickens after giving them transmural stimulation. The first pattern was contraction followed by relaxation, the second pattern was contraction only and the third pattern was relaxation only.
2. The transmural stimulation of the jejunum preparations evoked relaxation while the periarterial stimulation evoked contraction in the reserpinized chick.
3. The relaxation response to the transmural stimulation was not affected by the pretreatment with dibenamine, propranolol and atropine.
4. The relaxation response to the transmural stimulation was abolished by tetrodotoxin. The results obtained in these studies indicate that the relaxation response to the transmural stimulation is due to non-adrenergic inhibitory fibers.
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