Restoration of colchicine-blocked responses of frog tongue chemoreceptors by electrical stimulation of the sympathetic nervous system

1982 ◽  
Vol 94 (1) ◽  
pp. 849-852
Author(s):  
A. I. Esakov ◽  
O. D. Meshcheryakova
1957 ◽  
Vol 189 (3) ◽  
pp. 504-508 ◽  
Author(s):  
Robert L. Griswold ◽  
Irving Gray

Rats were made relatively resistant to the lethal effects of tumbling trauma by a previous series of electroconvulsive shocks (ECS). ECS causes an immediate marked rise in the plasma concentrations of adrenaline and noradrenaline, as a result of the electrical stimulation of the sympathetic nervous system. The plasma concentrations of adrenaline and noradrenaline, which are elevated in response to trauma, show a more rapid fall after termination of trauma in the ECS-conditioned animals than in controls. There is no significant alteration in the sensitivity of ECS-conditioned rats to toxic doses of adrenaline and noradrenaline. It is thought that ECS-conditioning, and probably also the conventional drum-conditioning, are brought about by a diminished reactivity of the sympathetic nervous system after its repeated stimulation.


1960 ◽  
Vol 198 (3) ◽  
pp. 669-676 ◽  
Author(s):  
Deane N. Calvert ◽  
Theodore M. Brody

An hypothesis is proposed which states that the characteristic hepatic changes seen after the administration of carbon tetrachloride are the result of stimulation of central sympathetic areas which produce a massive discharge of the peripheral sympathetic nervous system. Stimulation of the sympathetic supply to the blood vessels of the liver results in restriction of blood flow in the liver, leading to anoxia and the characteristic necrosis around the central vein of the hepatic lobule. Similarly the discharge causes the release of unesterified fatty acids from the peripheral fat depots and the consequent deposition of lipid in the liver. This hypothesis is based upon experimental evidence using the following physiologic and pharmacologic maneuvers: adrenergic blocking agents, pretreatment with reserpine, adrenalectomy and section of the spinal cord—all are effective to a greater or lesser extent in preventing the changes characteristically seen in oxidative phosphorylation of the liver mitochondria, activation of a Mg-dependent ATPase and deposition of lipid in the liver. Transection of the spinal cord is the most effective treatment and prevents entirely the characteristic changes seen in the above-mentioned functions.


2006 ◽  
Vol 103 (45) ◽  
pp. 16876-16881 ◽  
Author(s):  
R. Yirmiya ◽  
I. Goshen ◽  
A. Bajayo ◽  
T. Kreisel ◽  
S. Feldman ◽  
...  

Nature ◽  
1977 ◽  
Vol 269 (5629) ◽  
pp. 615-617 ◽  
Author(s):  
JAMES B. YOUNG ◽  
LEWIS LANDSBERG

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