Octopamine and Dopamine differentially modulate the nicotine-induced calcium response in <i>Drosophila</i> Mushroom Body Kenyon Cells

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dc.contributor.authorLeyton, V.
dc.contributor.authorGoles, N. I.
dc.contributor.authorFuenzalida-Uribe, N.
dc.contributor.authorCampusano, J. M.
dc.date.accessioned2025-01-23T21:47:55Z
dc.date.available2025-01-23T21:47:55Z
dc.date.issued2014
dc.description.abstractIn Drosophila associative olfactory learning, an odor, the conditioned stimulus (CS), is paired to an unconditioned stimulus (US). The CS and US information arrive at the Mushroom Bodies (MB), a Drosophila brain region that processes the information to generate new memories. It has been shown that olfactory information is conveyed through cholinergic inputs that activate nicotinic acetylcholine receptors (nAChRs) in the MB, while the US is coded by biogenic amine (BA) systems that innervate the MB. In this regard, the MB acts as a coincidence detector. A better understanding of the properties of the responses gated by nicotinic and BA receptors is required to get insights on the cellular and molecular mechanisms responsible for memory formation. In recent years, information has become available on the properties of the responses induced by nAChR activation in Kenyon Cells (KCs), the main neuronal MB population. However, very little information exists on the responses induced by aminergic systems in fly MB. Here we have evaluated some of the properties of the calcium responses gated by Dopamine (DA) and Octopamine (Oct) in identified KCs in culture. We report that exposure to BAs induces a fast but rather modest increase in intracellular calcium levels in cultured KCs. The responses to Oct and DA are fully blocked by a VGCC blocker, while they are differentially modulated by cAMP. Moreover, co-application of BAs and nicotine has different effects on intracellular calcium levels: while DA and nicotine effects are additive, Oct and nicotine induce a synergistic increase in calcium levels. These results suggest that a differential modulation of nicotine-induced calcium increase by DA and Oct could contribute to the events leading to learning and memory in flies. (c) 2013 Elsevier Ireland Ltd. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.neulet.2013.12.006
dc.identifier.eissn1872-7972
dc.identifier.issn0304-3940
dc.identifier.urihttps://doi.org/10.1016/j.neulet.2013.12.006
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101749
dc.identifier.wosidWOS:000331022700004
dc.language.isoen
dc.pagina.final20
dc.pagina.inicio16
dc.revistaNeuroscience letters
dc.rightsacceso restringido
dc.subjectDopamine
dc.subjectOctopamine
dc.subjectNicotinic acetylcholine receptor
dc.subjectDrosophila
dc.subjectCalcium
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleOctopamine and Dopamine differentially modulate the nicotine-induced calcium response in <i>Drosophila</i> Mushroom Body Kenyon Cells
dc.typeartículo
dc.volumen560
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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