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Free Content On the mode of action of methionine-enkephalin in inducing hyperglycemia in the fiddler crab Uca lactea annulipes

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The possibility that methionine-enkephalin induces hyperglycemia in the fiddler crab, Uca lactea annulipes was investigated. Injection of methionine-enkephalin and FK 33824 (methionine-enkephalin agonist) resulted in significant hyperglycemia in intact crabs but not in eyestalkless crabs. In contrast, naloxone (methionine-enkephalin receptor blocker) significantly (P < 0.0001) decreased hemolymph sugar level in intact crabs. This hyperglycemic action of methionine-enkephalin is hypothesized to be indirect, triggering release of hyperglycemic hormone from the eyestalks of the crabs.

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Document Type: Research Article

Publication date: 2002-01-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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