Biochemical characterization of a serotonergic system in the neural sheath of Helix ganglia.
Seasonal alterations of serotonin (5HT) as well as the release of 5HT and the presence of the synthesizing enzyme of serotonin (5HTP-decarboxylase) were investigated in the neural sheath and desheathed ganglia of Helix pomatia. It has been established that i) serotonin concentration shows a seasonal variation in the sheath, ii) serotonin is not synthesized in the neural sheath, iii) K(+)-dependent serotonin release occurs only in the desheathed ganglia.
Balaton Limnological Research Institute, Hungarian Academy of Sciences, Tihany.
S
S
Juhos
L
L
Hiripi
K
K
Elekes
D000818:Animals; D001142:Aromatic-L-Amino-Acid Decarboxylases / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid; D005724:Ganglia / Q000187:drug effects / Q000502:physiology*; D006372:Helix, Snails / Q000502:physiology*; D007700:Kinetics; D009474:Neurons / Q000502:physiology*; D011188:Potassium / Q000494:pharmacology; D012621:Seasons; D012701:Serotonin / Q000378:metabolism*
D012701:Serotonin; D001142:Aromatic-L-Amino-Acid Decarboxylases; D011188:Potassium