Effects of electrical stimulation of the superior cervical ganglia on the number of ?synaptic? ribbons and the activity of melatonin-forming enzymes in the rat pineal gland

1989 ◽  
Vol 179 (4) ◽  
pp. 341-345 ◽  
Author(s):  
Stefan Reuss ◽  
Werner Concemius ◽  
J�rg Stehle ◽  
Andre Seidel ◽  
Hannsj�rg Schr�der ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Pineal Gland ◽  
Synaptic Ribbons ◽  
Superior Cervical Ganglia ◽  
Cervical Ganglia ◽  
Rat Pineal Gland ◽  
Stimulation Of

THE PINEAL GLAND AND LIGHT-INDUCED OESTRUS IN FERRETS

1969 ◽  
Vol 43 (4) ◽  
pp. 625-NP ◽  
Author(s):  
J. HERBERT
Keyword(s):  
Pineal Gland ◽  
Direct Evidence ◽  
Artificial Light ◽  
Superior Cervical Ganglia ◽  
Functional Link ◽  
Superior Cervical Ganglionectomy ◽  
Cervical Ganglia

SUMMARY Pinealectomy (10 animals) or superior cervical ganglionectomy (14 animals) prevented the acceleration of oestrus in ferrets by two different daily regimes of artificial light. Both sets of animals came into oestrus in the spring following operation at about the same time as normal ferrets kept in daylight. Neither procedure affected the duration of the oestrous period. The interval between onsets of successive postoperative annual oestrous periods in both control-operated and normal animals kept in daylight supplemented by 6 hr. artificial evening illumination was about 1 yr., but was much greater in pinealectomized or ganglionectomized ferrets. An attempt to section the nn. conarii failed to provide direct evidence for a functional link between the superior cervical ganglia and the pineal, but there was a relation between the volume of pineal remaining after this procedure and the activating effect of artificial light on oestrus.

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