Purinergic receptors as a regulatory process of luminescence in Porichthys luminous organs
Rees, J.F.; Kaouass, M.; Baguet, F. (1991). Purinergic receptors as a regulatory process of luminescence in Porichthys luminous organs. J. Exp. Zool. 258(2): 181-188
In: The Journal of Experimental Zoology. Wiley Interscience: New York, etc.. ISSN 0022-104X; e-ISSN 1097-010X, more
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| Authors | | Top |
- Rees, J.F., more
- Kaouass, M.
- Baguet, F., more
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| Abstract |
The effects of exogenous adenosine and adenine phosphorylated derivatives were tested on the adrenergic luminescence of isolated luminous organs of the fish Porichthys. Adenosine triphosphate, at concentrations ranging from 10(-5) M to 10(-2)M, strongly inhibited the two peaks of the biphasic-shaped light emission induced by adrenalin. Adenosine diphosphate mimicked the effects of ATP, whereas adenosine monophosphate (AMP) and cyclic-AMP were ineffective. Adenosine had no inhibitory effect but potentiated the first peak of light whose intensity was five times increased. It is concluded that P2-purinergic receptors might be present on photocytes and exert a negative control on the luminescent system. Adenosine-induced potentiation might be related to an intracellular effect of this compound. |
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