alexa 13-Cis-Retinoic Acid-Induced Hyperglycemia in the Fresh
ISSN: 2155-9546

Journal of Aquaculture Research & Development
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Research Article

13-Cis-Retinoic Acid-Induced Hyperglycemia in the Fresh Water Edible Crab, Oziothelphusa Senex Senex is mediated by Triggering Release of Hyperglycemic Hormone from Eyestalks

Sreenivasula Reddy P1*and Srilatha M2
1Department of Zoology, Sri Venkateswara University, Tirupati-517 502, India
2Department of Biotechnology, Sri Venkateswara University, Tirupati-517 502, India
Corresponding Author : Sreenivasula Reddy
Department of Zoology
Sri Venkateswara University
Tirupati-517 502, India
Tel: +91-0877-2249320
E-mail: [email protected]
Received: April 10, 2015 Accepted: May 26, 2015 Published: June 30, 2015
Citation: Sreenivasula Reddy P, Srilatha M (2015) 13-Cis-Retinoic Acid-Induced Hyperglycemia in the Fresh Water Edible Crab, Oziothelphusa Senex Senex is mediated by Triggering Release of Hyperglycemic Hormone from Eyestalks. J Aquac Res Development 6:356. doi:10.4172/2155-9546.1000356
Copyright: © 2015 Sreenivasula Reddy P, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

The present study was aimed to investigate the effect of 13-cis-retinoic acid (13-CRA) on hemolymph glucose levels in the fresh water edible crab, Oziothelphusa senex senex. Injection of 13-CRA significantly increased hemolymph glucose levels in a dose-dependent manner in intact crabs. Bilateral eyestalk ablation (ESX) resulted in significant decrease in hemolymph glucose levels. Injection of 13-CRA in to ESX crabs did not cause any significant changes in hemolymph glucose level as compared to ESX crabs suggesting that the effect of 13-CRA could be on the neuroendocrine system in the eyestalks increasing secretion of hyperglycemic hormone. To test this hypothesis, eyestalks were collected from control and 13-CRA injected crabs, and tested for hyperglycemic effect and also for the hyperglycemic hormone levels. The levels of hyperglycemic hormone and the hyperglycemic effect were significantly low in the eyestalks collected from 13-CRA injected crabs when compared with eyestalks from control crabs. From results, it is hypothesized that 13-CRA-induced hyperglycemia in the crab, O. senex, is mediated by triggering the release of hyperglycemic hormone from the eyestalk.

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