[Study of the stimulating effect of the sympathetic stem on the stomach contraction].
Stimulation of the sympathetic stem chest portion induces enhancement rather than suppression of gastric contractions. The activating effect is more obvious under conditions of the alpha- and beta-adrenoreceptors blockade with phenolamine and obsidan, and eliminated with the smooth muscle serotoninoreceptors blocking agent lisergol. The findings suggest that the sympathetic stem includes some serotoninergic neural fibres exerting a strong effect upon gastric and intestinal contractions. A previously unknown serotoninergic part of the vegetative nervous system controlling the internal organs functions, seems to exist in the organism.
Smirnov
V M
VM
Russian State Medical University, Moscow, Russia.
Miasnikov
I L
IL
Berseneva
E A
EA
Sveshnikov
D S
DS
D000818:Animals; D004285:Dogs; D004558:Electric Stimulation; D005260:Female; D006874:Hydrostatic Pressure; D008297:Male; D009119:Muscle Contraction / Q000502:physiology; D009130:Muscle, Smooth / Q000502:physiology; D011942:Receptors, Adrenergic, alpha / Q000502:physiology; D011943:Receptors, Adrenergic, beta / Q000502:physiology; D011985:Receptors, Serotonin / Q000502:physiology; D044263:Receptors, Serotonin, 5-HT1; D013270:Stomach / Q000502:physiology*; D013564:Sympathetic Nervous System / Q000502:physiology*; D013909:Thorax
D011942:Receptors, Adrenergic, alpha; D011943:Receptors, Adrenergic, beta; D011985:Receptors, Serotonin; D044263:Receptors, Serotonin, 5-HT1