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Insect Biochem Mol Biol

Title:		"Peripheral regulation by ecdysteroids of olfactory responsiveness in male Egyptian cotton leaf worms, Spodoptera littoralis"
Author(s):		Bigot L; Shaik HA; Bozzolan F; Party V; Lucas P; Debernard S; Siaussat D;
Address:		"UMR 1272 Physiologie de l'Insecte, Signalisation et Communication, Universite Pierre et Marie Curie, Paris VI, 7 Quai Saint Bernard, F-75005 Paris, France"
Journal Title:		Insect Biochem Mol Biol
Year:		2012
Volume:		20111025
Issue:		1
Page Number:		22 - 31
DOI:		10.1016/j.ibmb.2011.10.003
ISSN/ISBN:		1879-0240 (Electronic) 0965-1748 (Linking)
Abstract:		"Physiological and behavioral plasticity allows animals to adapt to changes in external (environmental) and internal (physiological) factors. In insects, the physiological state modulates adult behavior in response to different odorant stimuli. Hormones have the potential to play a major role in the plasticity of the olfactory responses. To explore if peripheral olfactory processing could be regulated by steroid hormones, we characterized the molecular, electrophysiological, and behavioral response to changes in endogenous hormone levels in adult male Spodoptera littoralis. The expression of the receptor complex (EcR/USP) was localized by in situ hybridization in the olfactory sensilla of antennae. Injections of 20-hydroxyecdysone (20E) induced an ecdysteroid signaling pathway in antennae and increased expression of the nuclear receptors EcR, USP and E75. Diacylglycerol kinase (DGK) and CaM expression were also up-regulated by 20E. Taken together, these molecular, electrophysiological, and behavioral results suggest a hormonal regulation of the peripheral olfactory processing in S. littoralis"
Keywords:		"Animals Arthropod Antennae/*metabolism Calmodulin/metabolism DNA-Binding Proteins/metabolism Diacylglycerol Kinase/metabolism Ecdysteroids/*metabolism Hemolymph/metabolism Insect Proteins/metabolism Male Pheromones Receptors, Steroid/metabolism Signal Tra;"
Notes:		"MedlineBigot, Laetitia Shaik, Haq Abdul Bozzolan, Francoise Party, Virginie Lucas, Philippe Debernard, Stephane Siaussat, David eng Research Support, Non-U.S. Gov't England 2011/11/03 Insect Biochem Mol Biol. 2012 Jan; 42(1):22-31. doi: 10.1016/j.ibmb.2011.10.003. Epub 2011 Oct 25"