2009
DOI: 10.1002/cne.21991
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Localization of biogenic amines in the foregut of Aplysia californica: Catecholaminergic and serotonergic innervation

Abstract: This study examined the catecholaminergic and serotonergic innervation of the foregut of Aplysia californica, a model system in which the control of feeding behaviors can be investigated at the cellular level. Similar numbers (15-25) of serotonin-like-immunoreactive (5HTli) and tyrosine hydroxylase-like-immunoreactive (THli) fibers were present in each (bilateral) esophageal nerve (En), the major source of pregastric neural innervation in this system. The majority of En 5HTli and THli fibers originated from th… Show more

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Cited by 21 publications
(12 citation statements)
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“…For example, the esophageal sensory nerve En, the reinforcement pathway that likely conveys food reward signals in vivo [36,42,52] and which mediates electrical stimulation-induced operant learning in vitro [38][39][40] is rich with DA-containing fibers [26,82] that provide synaptic input to buccal network elements, including the B51 [50] and B63 neurons [55]. Moreover, exogenous DA reproduces the effects of contingent reinforcement when applied to isolated B51 neurons in culture in a single cell analogue of operant conditioning [36,45].…”
Section: Ubiquity Of Dopamine In Mediating Associative Learningmentioning
confidence: 99%
“…For example, the esophageal sensory nerve En, the reinforcement pathway that likely conveys food reward signals in vivo [36,42,52] and which mediates electrical stimulation-induced operant learning in vitro [38][39][40] is rich with DA-containing fibers [26,82] that provide synaptic input to buccal network elements, including the B51 [50] and B63 neurons [55]. Moreover, exogenous DA reproduces the effects of contingent reinforcement when applied to isolated B51 neurons in culture in a single cell analogue of operant conditioning [36,45].…”
Section: Ubiquity Of Dopamine In Mediating Associative Learningmentioning
confidence: 99%
“…Serotonin (5-hydroxytriptamine: 5-HT) is contained in the central nervous system (CNS) of gastropod molluscs, particularly in the buccal and cerebral ganglia, and is involved in the control of feeding behavior (Elekes, 1992;Gietzen et al, 1992;Kemenes, 1997;Hatakeyama and Ito, 1999;Proekt and Weiss, 2003;Jacklet et al, 2006;Martínez-Rubio et al, 2009). In the pond snail Lymnaea stagnalis, a pair of serotonergic giant interneurons called the cerebral giant cells (CGCs) are found in the cerebral ganglia, and are homologous to neurons sometimes called the metacerebral cells in other gastropod molluscs; the CGCs play key roles in the feeding system of the CNS (McCrohan and Benjamin, 1980b;Kyriakides and McCrohan, 1989;Kojima et al, 1997Kojima et al, , 2001Elliott and Vehovszky, 2000;Straub et al, 2007;Yeoman et al, 2008).…”
Section: Introductionmentioning
confidence: 99%
“…the neurotransmitters, the cells use for communication. Catecholamines, one of the ‘classical’ neurotransmitters of the metazoans, have been extensively reported to be present in most animal groups (Sulston et al 1975; Hay-Schmidt 1990, 1992; Gonzalez and Smeets 1991; Pierre et al 1997; Pulver et al 2003; Faller et al 2008; Voronezhskaya et al 2008; Martínez-Rubio et al 2009), including members of Echinodermata. The occurrence of catecholaminergic cells and fibers has been demonstrated in the larvae of members from three of the representative groups of Echinodermata: Echinoidea, Asteroidea, and Holothuroidea.…”
Section: Introductionmentioning
confidence: 99%