Hyperglycaemic effects of dopamine in tiger shrimp, Penaeus monodon
Resource
Aquaculture 135, 161-172
Journal
Aquaculture 135
Pages
161-172
Date Issued
1995
Date
1995
Author(s)
Kuo, Ching-ming
Hsu, Chin-rong
Lin, Chung-yen
DOI
246246/2006111501222481
Abstract
The presence & the physiological functions of biogenic amines as neuroregulators mediating the release of neurohormones have been documented in crustaceans. The possible involvement & the stimulatory pathway of dopamine in hyperglycaemia of the tiger shrimp, Penaeus monodon, were investigated.
Two isoforms of crustacean hyperglycaemic hormone (CHH), CHHI & CHHZ, were identified. They were equally potent in the diabetic effect, & showed a great similarity in their amino acid composition profile, which is however, distinct from those reported from other crustacean species, such as the shore crab, Mexican crayfish & American lobster. Thus, species variation in the amino acid composition of CHH exists among the crustaceans.
Dopamine was found to mimic the action of CHH in inducing hyperglycaemia in intact shrimps, but not in bilaterally eyestalk-ablated individuals. The hyperglycaemic response of shrimps that were treated with the agonist & antagonist to Dr & Dz receptors, suggest that dopamine functions as a neuroregulator, which in turn stimulates the release of CHH mainly through D, receptors in tiger shrimps.
The presence and the physiological functions of biogenic amines as neuroregulators mediating the
release of neurohormones have been documented in crustaceans. The possible involvement and the
stimulatory pathway of dopamine in hyperglycaemia of the tiger shrimp, Penaeus monodon, were
investigated.
Two isoforms of crustacean hyperglycaemic hormone (CHH), CHHI and CHHZ, were identified.
They were equally potent in the diabetic effect, and showed a great similarity in their amino acid
composition profile, which is however, distinct from those reported from other crustacean species,
such as the shore crab, Mexican crayfish and American lobster. Thus, species variation in the amino
acid composition of CHH exists among the crustaceans.
Dopamine was found to mimic the action of CHH in inducing hyperglycaemia in intact shrimps,
but not in bilaterally eyestalk-ablated individuals. The hyperglycaemic response of shrimps that were
treated with the agonist and antagonist to Dr and Dz receptors, suggest that dopamine functions as a
neuroregulator, which in turn stimulates the release of CHH mainly through D, receptors in tiger
shrimps.
Subjects
Penaeids
Hyperglycaernia
Dopamine
Doparninergic receptor
Penaeus monodon
SDGs
Publisher
Taipei:National Taiwan University Dept Chem Engn
Type
journal article
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