The GABAergic system of the dorsal cortex of lizards: A combined HRP-GABA immunohistochemistry study

Teruel, Vicent; Villeta, Enrique; Martı́nez-Garcı́a, Fernando; Lorente, María José

doi:10.1016/0304-3940(90)90530-m

Cited by 10 publications

(2 citation statements)

References 17 publications

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“…Antisera against GABA itself or the enzyme responsible for its synthesis, glutamic acid decarboxylase (GAD), have been used to identify GABAergic neuronal populations and define GABAergic circuits of the brain in diverse vertebrate groups (Mugnaini and Oertel, 1985;Wu et al, 1986;Domenici et al, 1988;Schwerdtfeger and Lorente, 1988;Granda and Crossland, 1989;Schiffmann and Vanderhaeghen, 1990;Teruel et al, 1990;Albus et al, 1991;Bennis et al, 1991;Csillag, 1991;Reiner, 1991;Villeta et al, 1991;Watson et al, 1991). Two forms of GAD have been identified in mammals, GAD65 and GAD67 (Bu et al, 1992;Erlander et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

The distribution and cellular localization of glutamic acid decarboxylase-65 (GAD65) mRNA in the forebrain and midbrain of domestic chick

Sun

Wang

Laverghetta

et al. 2005

Journal of Chemical Neuroanatomy

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Section: Introductionmentioning

confidence: 99%

The distribution and cellular localization of glutamic acid decarboxylase-65 (GAD65) mRNA in the forebrain and midbrain of domestic chick

Sun

Wang

Laverghetta

et al. 2005

Journal of Chemical Neuroanatomy

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“…The general distribution of GABA immunoreactivity has been mapped in the forebrain and midbrain of the chameleon (Chamaeleo chameleon) [Bennis et al, 1991]. A few specific forebrain areas have also been investigated in two other lizards and two turtle species Blanton et al, 1987;Schwerdtfeger and Lorente, 1988;Teruel et al, 1990;Belekhova et al, 1992]. Distribution information in teleosts is limited and focused almost exclusively on the forebrain [Martinoli et al, 1990;Medina et al, 1994;Ekstrom and Ohlin, 1995;Anglade et al, 1999;Trabucchi et al, 2000;Bosma et al, 2001].…”

Section: Introductionmentioning

confidence: 99%

Distribution of GABA-Like Immunoreactive Cell Bodies in the Brains of Two Amphibians, <i>Rana catesbeiana</i> and <i>Xenopus laevis</i>

Hollis

Boyd²

2005

Brain Behav Evol

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The distribution of the neurotransmitter gamma-aminobutyric acid (GABA) is not well understood for non-mammalian vertebrates. We thus used immunocytochemistry to locate putative GABAergic cells in the brains of male bullfrogs (Rana catesbeiana) and South African clawed frogs (Xenopus laevis). GABA-immunoreactive cell bodies were broadly distributed throughout the brains of both species with similar general patterns. In both, the greatest numbers of GABA-positive cells were found in the olfactory bulb, thalamus, and optic tectum, but virtually no major brain region lacked GABAergic cells. Species differences were also apparent. The density of GABA-immunoreactive cells was substantially higher in many areas of the bullfrog brain, compared to Xenopus. Bullfrogs possessed extensive cell populations in the medial pallium, preoptic area, optic tectum, torus semicircularis and tegmentum but cells were fewer in these locations in Xenopus. In the bullfrog hindbrain, GABA-immunoreactive cell bodies were restricted to very narrow and distinct populations. In Xenopus, however, cells in a similar position were fewer and spread more extensively. The distribution of GABA cells in the brain of these two species supports the hypotheses that GABA is involved in control of olfaction, audition, vision and vocalization. However, differences in the distribution of GABA between the bullfrog and Xenopus suggest that the extent of the GABAergic influence might vary between species.

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Septal complex of the telencephalon of the lizardPodarcis hispanica. II. afferent connections

et al. 1997

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The afferent connections to the septal complex were studied in the lizard Podarcis hispanica (Lacertidae) by means of a combination of retrograde and anterograde tracing. The results of these experiments allow us to classify the septal nuclei into three main divisions. The central septal division (anterior, lateral, dorsolateral, ventrolateral, and medial septal nuclei plus the nucleus of the posterior pallial commissure) receives a massive, topographically organized, cortical projection (medial, dorsal, and ventral areas) and widespread afferents from the tuberomammillary hypothalamus and the basal telencephalon. Moreover, it receives discrete projections from the dorsomedial anterior thalamus, the ventral tegmentum, the midbrain raphe, and the locus coeruleus. The ventromedial septal division (ventromedial septal nucleus) receives a massive projection from the anterior hypothalamus, dense serotonergic innervation, and a faint amygdalohypothalamic projection, but it is devoid of direct cortical input. The midline septal division (nucleus septalis impar and dorsal septal nucleus) receives a nontopographic cortical projection (dorsomedial and dorsal cortices) and afferents from the preoptic hypothalamus, the dorsomedial anterior thalamus, the midbrain central gray, and the reptilian A8 nucleus/substantia nigra. Our results indicate that the cortex provides a physiologically complex, massive input to the septum that terminates over the whole dendritic tree of septal cells. In contrast, most of the ascending afferents make axosomatic contacts by means of pericellular nests. The chemical nature of the main septal afferents and the comparative implications of the available hodological data on the organization of the septal complex of tetrapod vertebrates are discussed.

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The GABAergic system of the dorsal cortex of lizards: A combined HRP-GABA immunohistochemistry study

Cited by 10 publications

References 17 publications

The distribution and cellular localization of glutamic acid decarboxylase-65 (GAD65) mRNA in the forebrain and midbrain of domestic chick

The distribution and cellular localization of glutamic acid decarboxylase-65 (GAD65) mRNA in the forebrain and midbrain of domestic chick

Distribution of GABA-Like Immunoreactive Cell Bodies in the Brains of Two Amphibians, <i>Rana catesbeiana</i> and <i>Xenopus laevis</i>

Septal complex of the telencephalon of the lizardPodarcis hispanica. II. afferent connections

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