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Comparative Study
. 1993 Dec;18(12):1245-8.
doi: 10.1007/BF00975042.

Characterization of the tyraminergic system in the central nervous system of the locust, Locusta migratoria migratoides

R G Downer  1 , L Hiripi, S Juhos
Affiliations
Comparative Study

Characterization of the tyraminergic system in the central nervous system of the locust, Locusta migratoria migratoides

R G Downer et al. Neurochem Res. 1993 Dec.

Abstract

Tyramine occurs in the central nervous system (CNS) of the migratory locust, Locusta migratoria migratoides. The distribution of tyramine within the CNS does not parallel that of octopamine. Tyramine is synthesised from tyrosine in the presence of tyrosine decarboxylase. A second decarboxylase in the CNS is active against 5HTP and DOPA. The locust ganglia incorporate tyramine by high- and low-affinity uptake processes that appear to be independent of dopamine and octopamine. Depolarisation of the locust ganglia by high potassium concentration results in calcium-dependent release of incorporated [3H]tyramine.

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