ISSN:
0739-4462
Keywords:
cockroach
;
autotoxicity
;
stress
;
Chemistry
;
Food Science, Agricultural, Medicinal and Pharmaceutical Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Biology
Notes:
Injection of adult male cockroaches with 16 nmol taurine reduces excitationinduced elevation of hemolymph octopamine levels. Taurine-treated insects have higher concentrations of octopamine in the brain following excitation than nontreated cockroaches. Isolated brains, incubated in taurine-containing saline, release less octopamine in response to electrical stimulation than those incubated in saline. The effect of taurine injection on excitation-induced octopamine release is manifested with physiological concentrations of taurine and persists for at least 15 h following injection. Excitation also causes a rapid increase in hemolymph taurine levels. The results indicate that taurine inhibits the release of octopamine from the insect nervous system and may form part of a dual control mechanism for excitation, with octopamine serving as a positive effector and taurine serving as an inhibitory modulator of octopamine release.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/arch.940050207
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