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Environmental Sciences

Wright State University

Theses/Dissertations

2010

Endocrine Disruption

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Crustacean Endocrine Disruption Through A Pathway Involving Nuclear Receptors, Cyclic Nucleotides And Calcium Transporters, Laxminath Tumburu Jan 2010

Crustacean Endocrine Disruption Through A Pathway Involving Nuclear Receptors, Cyclic Nucleotides And Calcium Transporters, Laxminath Tumburu

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Endocrine disruption is a complex phenomenon in the sense that endocrine disrupting chemicals (EDCs) are known to act via multiple modes of action, but the mechanisms of actions are poorly understood. In crustaceans, calcium (Ca2+) apart from its role as a second messenger, is also a major constituent of the calcified exoskeleton which undergoes a periodic mineralization/demineralization process known as the molting cycle. Molt cycle is under the control of steroid hormones, ecdysteroids. EDCs disrupt this molting process via their interference with receptor-mediated ecdysteroid signaling. However, the hormonal regulation of Ca2+ flux in crustacean molting is poorly …