Distribution of somatostatin immunoreactive neurons and fibres in the central nervous system of a chondrostean, the Siberian sturgeon (Acipenser baeri)

Adrio, Fátima; Anadón, Ramón; Rodríguez‐Moldes, Isabel

doi:10.1016/j.brainres.2008.03.002

Cited by 14 publications

(18 citation statements)

References 72 publications

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“…SS genes displayed different expression levels in the brain of lungfish (Trabucchi et al, 1999), white sturgeon (Trabucchi et al, 2002), goldfish (Yunker et al, 2003), grouper (Ye et al, 2005) and Siberian sturgeon (Adrio et al, 2008). In this study, the two AsSS genes expressed in all subdivisions of brain and pituitary with different expression levels (Fig.…”

Section: Discussionmentioning

confidence: 53%

Molecular and expression characterization of two somatostatin genes in the Chinese sturgeon, Acipenser sinensis

Wei

Zhou

et al. 2009

Comparative Biochemistry and Physiology Part A: Molecular &

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Section: Discussionmentioning

confidence: 53%

Molecular and expression characterization of two somatostatin genes in the Chinese sturgeon, Acipenser sinensis

Wei

Zhou

et al. 2009

Comparative Biochemistry and Physiology Part A: Molecular &

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“…The nomenclature used is partially the same used in previous studies (Adrio et al, 2002(Adrio et al, , 2008(Adrio et al, , 2011Braford, 2009;Graña et al, 2012;Northcutt, 2011;Piñuela & Northcutt, 2007). The distribution of the immunoreactive labeling for Nkx2.1, Isl1, Otp, and Pax6 was analyzed in relation to the main prosencephalic regions, attending in particular to the rostrocaudal organization that considers the telencephalon and hypothalamus as derivatives of the secondary prosencephalon and rostral to the diencephalon (Figure 1b,c).…”

Section: Evaluation and Presentation Of The Resultsmentioning

confidence: 99%

Analysis of Islet‐1, Nkx2.1, Pax6, and Orthopedia in the forebrain of the sturgeon Acipenser ruthenus identifies conserved prosomeric characteristics

López

Jiménez

Morona

et al. 2021

J of Comparative Neurology

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The distribution patterns of a set of conserved brain developmental regulatory transcription factors were analyzed in the forebrain of the basal actinopterygian fish Acipenser ruthenus, consistent with the prosomeric model. In the telencephalon, the pallium was characterized by ventricular expression of Pax6. In the subpallium, the combined expression of Nkx2.1/Islet-1 (Isl1) allowed to propose ventral and dorsal areas, as the septo-pallidal (Nkx2.1/Isl1+) and striatal derivatives (Isl1+), respectively, and a dorsal portion of the striatal derivatives, ventricularly rich in Pax6 and devoid of Isl1 expression. Dispersed Orthopedia (Otp) cells were found in the supracommissural and posterior nuclei of the ventral telencephalon, related to the medial portion of the amygdaloid complex. The preoptic area was identified by the Nkx2.1/Isl1 expression. In the alar hypothalamus, an Otp-expressing territory, lacking Nkx2.1/Isl1, was identified as the paraventricular domain. The adjacent subparaventricular domain (Spa) was subdivided in a rostral territory expressing Nkx2.1 and an Isl1+ caudal one. In the basal hypothalamus, the tuberal region was defined by the Nkx2.1/Isl1 expression and a rostral Otp-expressing domain was identified. Moreover, the Otp/Nkx2.1 combination showed an additional zone lacking Isl1, tentatively identified as the mamillary area. In the diencephalon, both Pax6 and Isl1 defined the prethalamic domain, and within the basal prosomere 3, scattered Pax6-and Isl1-expressing cells were observed in the posterior tubercle. Finally, a small group of Pax6 cells was observed in the pretectal area.These results improve the understanding of the forebrain evolution and demonstrate that its basic bauplan is present very early in the vertebrate lineage.

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“…The identification of Dc as the possible homologue of the dorsal pallium in other vertebrates changes this situation. For example, sturgeons — a second clade of basal ray-finned fish and closely related to Polypterus — do possess a central (Dc) zone homologous to the one of teleosts (Adrio et al, 2008; Northcutt, 2008; Pinuela and Northcutt, 2007). This latter finding supports the hypothesis that a dorsal pallium is an ancestral character of ray-finned fish, homologous to those of other vertebrates.…”

Section: Discussionmentioning

confidence: 99%

The dorsal pallium in zebrafish, Danio rerio (Cyprinidae, Teleostei)

et al. 2011

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Zebrafish as a neurogenetic model system depends on the correct neuroanatomical understanding of its brain organization. Here, we address the unresolved question regarding a possible zebrafish homologue of the dorsal pallial division, the region that in mammals gives rise to the isocortex. Analyzing the distributions of nicotine adenine dinucleotide phosphate diphorase (NADPHd) activity and parvalbumin in the anterior zebrafish telencephalon, we show that against previous assumptions the central (Dc) zone possesses its own germinative region in the dorsal proliferative zone. We define the central (Dc) zone as topologically corresponding to the dorsal pallial division of other vertebrates (mammalian isocortex). In addition, we confirm through BrdU-labeling experiments that the posterior (Dp) zone is formed by radial migration and homologous to the mammalian piriform cortex. Based on our results, we propose a new developmental and organizational model of the zebrafish pallium-one which is the result of a complex outwardinward folding.

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Distribution of somatostatin immunoreactive neurons and fibres in the central nervous system of a chondrostean, the Siberian sturgeon (Acipenser baeri)

Cited by 14 publications

References 72 publications

Molecular and expression characterization of two somatostatin genes in the Chinese sturgeon, Acipenser sinensis

Molecular and expression characterization of two somatostatin genes in the Chinese sturgeon, Acipenser sinensis

Analysis of Islet‐1, Nkx2.1, Pax6, and Orthopedia in the forebrain of the sturgeon Acipenser ruthenus identifies conserved prosomeric characteristics

The dorsal pallium in zebrafish, Danio rerio (Cyprinidae, Teleostei)

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