Identification of the reptilian basolateral amygdala: an anatomical investigation of the afferents to the posterior dorsal ventricular ridge of the lizard Podarcis hispanica

Lanuza, Enrique; Belekhova, M. G.; Martı́nez-Marcos, Alino; Font, Cristian; Martínez‐Garciá, Fernando

doi:10.1046/j.1460-9568.1998.00363.x

Cited by 78 publications

(104 citation statements)

References 79 publications

(124 reference statements)

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“…Since these first telencephalic 5-HT-ir fibers appear after the differentiation of isthmic 5-HT-ir cells (S26) but simultaneous to the appearance of first hypothalamic 5-HT-ir cells (S31), it is very probable that they arise from the raphe/reticular formation. This raphetelencephalic connection has also been described in teleosts embryos (Ekström et al, 1985;McLean and Fetcho, 2004a), adults (Echteler and Saidel, 1981;Holmes and Northcutt, 2003;Folgueira et al, 2004a,b;Rink and Wul-limann, 2004), and in tetrapods (Northcutt and Ronan, 1992;Siemen and Kunzle, 1994;Medina and Reiner, 1995;Wild and Farabaugh, 1996;Dubbeldam et al, 1997;Marín et al, 1997a;Font et al, 1997Font et al, , 1998Lanuza et al, 1998;Roden et al, 2005).…”

Section: Some Notes About Serotoninergic Innervation In Certain Brainmentioning

confidence: 60%

Development of the serotoninergic system in the central nervous system of a shark, the lesser spotted dogfish Scyliorhinus canicula

Carrera

Molíst

Anadón

et al. 2008

J of Comparative Neurology

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Chondrychthyans (cartilaginous fishes) are key to understanding the ancestral gnathostome condition since they provide an outgroup to sarcopterygians and actinopterygians. To gain comparative knowledge about the development of the vertebrate serotoninergic systems, we studied by immunohistochemistry the origin, spatiotemporal organization, and migration patterns of serotonin-containing neurons and the growth of axonal pathways in the central nervous system of a shark, the lesser spotted dogfish. Hindbrain serotonin-immunoreactive cells arose close to the floor plate and most populations migrated ventrally and mediolaterally to form the various raphe and reticular groups. The order of appearance of serotoninergic populations in the rhombencephalon and spinal cord (first the superior groups and then the inferior and spinal populations) roughly matched with that reported in other vertebrates but important differences were noted in the formation of prosencephalic groups in fishes. In addition to preoptic and hypothalamic areas, serotoninergic cerebrospinal fluid-contacting cells were observed in the isthmus (raphe dorsalis anterioris). Transient serotonin-immunoreactive cells were noted in the pineal organ, habenula, and pretectum. Further, we provide a revised anatomical framework for reticular and raphe serotoninergic populations considering their origin and segmental organization. Two distinct phases of development of the serotoninergic innervation were distinguished, that of the formation of the main axonal pathways and that of the branching of fibers. The development of main serotoninergic ascending pathways in dogfish was notably similar to that described in mammals. Our findings suggest the conservation of developmental patterns in serotoninergic systems and enhance the importance of elasmobranchs for understanding the early evolution of this system in vertebrates.

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Section: Some Notes About Serotoninergic Innervation In Certain Brainmentioning

confidence: 60%

Development of the serotoninergic system in the central nervous system of a shark, the lesser spotted dogfish Scyliorhinus canicula

Carrera

Molíst

Anadón

et al. 2008

J of Comparative Neurology

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“…The DVR bulges into the lateral ventricle, and its anterior part has been shown to be largely sensory in function and its posterior part has been proposed to be largely amygdaloid in nature [Northcutt, 1981;Andreu et al, 1996;Lanuza et al, 1997Lanuza et al, , 1998Guirado et al, 1999]. In all sauropsids except the lizard-like rhynchocephalian reptile, Sphenodon punctatus, the DVR consists of a field of separate nuclei of variable distinctness [Northcutt, 1978[Northcutt, , 1981.…”

Section: Introductionmentioning

confidence: 99%

Succinic Dehydrogenase Histochemistry Reveals the Location of the Putative Primary Visual and Auditory Areas within the Dorsal Ventricular Ridge of Sphenodon punctatus

Reiner¹,

Northcutt²

2000

Brain Behav Evol

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In turtles, crocodilians, lizards and snakes, the dorsal ventricular ridge (DVR) is a nuclear cell mass that contains distinct visual and auditory thalamorecipient cell groups. In the tuatara (Sphenodon punctatus), the DVR is not organized into diverse cell groups but instead possesses a trilaminar cytoarchitecture resembling that characteristic of the telencephalic cortex in reptiles. To determine if visual and auditory fields might also be present in the DVR of Sphenodon punctatus, we used succinic dehydrogenase (SDH) histochemistry, which has been shown to delineate the visual and auditory fields of the DVR in turtles, crocodilians and lizards. We also used acetylcholinesterase (AChE) histochemistry to determine the boundary between the DVR and the basal ganglia in Sphenodon. We found an SDH-rich region in the neuropil ventral to the cell plate of the rostrolateral DVR and a slightly less intense SDH-rich zone in the neuropil deep to the cell plate of the ventromedial DVR. These SDH-rich zones appear to be located at the apical dendrites of the neurons of the adjacent cell plate. These SDH-rich zones were clearly located within the DVR and were distinct from the AChE-rich striatal part of the basal ganglia, which occupied the ventrolateral wall of the telencephalon. Based on findings in other reptiles, it seems likely that the SDH-rich zone in rostrolateral DVR represents the zone of termination of nucleus rotundus visual input to the DVR, whereas the zone in ventromedial DVR represents the zone of termination of nucleus reuniens auditory input. Because a trilaminar DVR such as that in Sphenodon might be the primitive DVR condition for reptiles, our results suggest that the cytoarchitecture of the DVR and the synaptic organization of its thalamic sensory input in the common ancestor of living reptiles might have been much like of the dorsal cortex.

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“…It is uncertain, however, whether birds and mammals have inherited these similarities from their common amniote ancestors as there is not yet a consensus regarding which parts of the avian pallium are homologous to mammalian neocortex [Reiner, 2000], and it is further unknown if PT-type and IT-type corticostriatal neurons exist in parts of the pallium of living reptiles that are homologous to the parts of the pallium containing these neuron types in birds and mammals [Reiner, 2000]. The pallial territory examined in the present study has been regarded as homologous to the sector of mammalian cerebral cortex lateral to the temporal sulcus by some authors [Karten, 1969;Butler, 1994a, b;Reiner, 2000] and as homologous to the mammalian claustroamygdaloid complex by others [Bruce and Neary, 1995;Northcutt and Kaas, 1995;Striedter, 1997;Lanuza et al, 1998;Puelles et al, 2000]. Because IT-type corticostriatal neurons resemble basolateral amygdaloid corticostriatal neurons in their traits of projecting intratelencephalically to both other pallial territories as well as to striatum [Russchen et al, 1985;Ragsdale and Graybiel, 1988;Kita and Kitai, 1990;McDonald, 1991], it is plausible that avian IT-type neurons might be claustroamygdaloid in nature.…”

Section: Discussionmentioning

confidence: 67%

“…Nonetheless, the observations that corticostriatal neurons of the basolateral amygdala project preferentially to limbic striatum in mammals [Russchen et al, 1985;Ragsdale and Graybiel, 1988;Kita and Kitai, 1990;McDonald, 1991] whereas those of the PE project preferentially to the somatic striatum in birds [Veenman et al, 1995] favors the view that avian IT-type 'cortico'-striatal neurons are unlike those of basolateral amygdala. Information on the cellular morphology, projection targets, intrastriatal axonal morphology and physiology of those neurons projecting to the striatum from the comparable part of the pallium in reptiles [Voneida and Sligar, 1979;Hoogland and Vermeulen-Vanderzee, 1989;Gonzalez et al, 1990;Lanuza et al, 1998] would be of use in further evaluating the evolution of IT-type 'cortico'-striatal neurons among amniotes. More detailed comparisons between projection neurons of basolateral amygdaloid nucleus in mammals and IT-type neurons in birds and mammals would also be useful.…”

Section: Discussionmentioning

confidence: 99%

Physiology and Morphology of Intratelencephalically Projecting Corticostriatal-Type Neurons in Pigeons as Revealed by Intracellular Recording and Cell Filling

Reiner

Stern

Wilson³

2001

Brain Behav Evol

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Much of the Wulst and dorsal ventricular ridge (DVR) in birds, which together make up the part of the avian telencephalon functionally resembling mammalian cerebral cortex, projects to the striatum. Those connections arise from neurons projecting additionally to the brainstem as well as from neurons projecting only within the telencephalon. As part of an effort to further characterize corticostriatal-type projection neurons in birds, we recorded intracellularly from neurons of the outer DVR, identified neurons projecting to the striatum by antidromic stimulation from the ipsilateral rostromedial striatum or subsequently by their axonal projection, characterized these neurons physiologically and then filled them with biocytin. As neurons in the outer DVR only project within telencephalon, neurons within it projecting to the striatum are of the intratelencephalically projecting (IT) type. Our studies suggest that: (1) the membrane potentials of avian IT-type neurons fluctuate between two preferred subthreshold values, and action potentials occur only in the ‘up’ state, (2) avian IT-type neurons show a time-dependent inward rectification in response to hyperpolarization and regular firing in response to constant current injection, (3) the conduction velocity of avian IT-type neurons is slow (about 0.2 m/s), (4) avian IT-type neurons possess radially disposed densely spiny dendrites but no apical dendrite, (5) avian IT-type neurons have local and distant collateral projections within the DVR, and (6) individual avian IT-type neurons give rise to an extensive terminal field within the striatum. Aside from the shape of their dendritic tree, IT-type neurons in birds closely resemble IT-type corticostriatal neurons in mammals in these various aspects, although it is presently uncertain whether this neuron type has been inherited in common by birds and mammals from stem amniotes.

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Identification of the reptilian basolateral amygdala: an anatomical investigation of the afferents to the posterior dorsal ventricular ridge of the lizard Podarcis hispanica

Cited by 78 publications

References 79 publications

Development of the serotoninergic system in the central nervous system of a shark, the lesser spotted dogfish Scyliorhinus canicula

Development of the serotoninergic system in the central nervous system of a shark, the lesser spotted dogfish Scyliorhinus canicula

Succinic Dehydrogenase Histochemistry Reveals the Location of the Putative Primary Visual and Auditory Areas within the Dorsal Ventricular Ridge of <i>Sphenodon punctatus</i>

Physiology and Morphology of Intratelencephalically Projecting Corticostriatal-Type Neurons in Pigeons as Revealed by Intracellular Recording and Cell Filling

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