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      Transient appearance of the epithelial invagination in the olfactory pit of chick embryos

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          Abstract

          In this study, immunohistochemical analysis has been performed using neuronal markers (GAP43, NCAM and PGP 9.5) to characterize the epithelial invagination in the medial wall of the olfactory pit in the chick embryos. At stages 26–27, the epithelial invagination was primarily composed of characteristic round-shaped cells, which were negative for neuronal markers. These cells were also found in the medial wall of the olfactory pit at stage 24, whereas the epithelial invagination was not observed at any stages other than stages 26–27. The possible relationship between the round-shaped cells and the migratory cells is discussed.

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          A series of normal stages in the development of the chick embryo. 1951.

          Viktor Hamburger, Howard L. Hamilton (1992)
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            Neural crest and ectodermal cells intermix in the nasal placode to give rise to GnRH-1 neurons, sensory neurons, and olfactory ensheathing cells.

            Paolo Forni, Carol Taylor-Burds, Vida Senkus Melvin … (2011)
            The origin of GnRH-1 cells and olfactory ensheathing cells has been controversial. Genetic Cre-lox lineage tracing of the neural crest (NC) versus ectodermal contribution to the developing nasal placode was performed using two complementary mouse models, the NC-specific Wnt1Cre mouse line and an ectodermal-specific Crect mouse line. Using these lines we prove that the NC give rise to the olfactory ensheathing cells and subpopulations of GnRH-1 neurons, olfactory and vomeronasal cells. These data demonstrate that Schwann cells and olfactory ensheathing cells share a common developmental origin. Furthermore, the results indicate that certain conditions that impact olfaction and sexual development, such as Kallmann syndrome, may be in part neurocristopathies.
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              From nose to brain: development of gonadotrophin-releasing hormone-1 neurones.

              S. Wray (2010)
              Gonadotrophin-releasing hormone-1 (GnRH-1) is essential for mammalian reproduction, controlling release of gonadotrophins from the anterior pituitary. GnRH-1 neurones migrate from the nasal placode into the forebrain during development. Although first located within the nasal placode, the embryonic origin/lineage of GnRH-1 neurones is still unclear. The migration of GnRH-1 cells is the best characterised example of neurophilic/axophilic migration, with the cells using a subset of olfactory-derived vomeronasal axons as their pathway and numerous molecules to guide their movement into the forebrain. Exciting work in this area is beginning to identify intersecting pathways that orchestrate the movement of these critical neuroendocrine cells into the central nervous system, both spatially and temporally, through a diverse and changing terrain. Once within the forebrain, little is known about how the axons target the median eminence and ultimately secrete GnRH-1 in a pulsatile fashion.
              Article 0 comments Cited 64 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): J Vet Med Sci
                Journal ID (iso-abbrev): J. Vet. Med. Sci
                Journal ID (publisher-id): JVMS
                Title: The Journal of Veterinary Medical Science
                Publisher: The Japanese Society of Veterinary Science
                ISSN (Print): 0916-7250
                ISSN (Electronic): 1347-7439
                Publication date (Electronic): 18 September 2014
                Publication date (Print): January 2015
                Volume: 77
                Issue: 1
                Pages: 89-93
                Affiliations
                [1) ]Laboratory of Veterinary Anatomy, Faculty of Agriculture, Iwate University, 3–18–8 Ueda, Morioka, Iwate 020–8550, Japan
                [2) ]United Graduate School of Veterinary Sciences, Gifu University, 1–1 Yanagido, Gifu 501–1193, Japan
                [3) ]Department of Chemistry and Bioengineering, Faculty of Engineering, Iwate University, 3–18–8 Ueda, Morioka, Iwate 020–8550, Japan
                [4) ]United Graduate School of Agricultural Sciences, Iwate University, 3–18–8 Ueda, Morioka, Iwate 020–8550, Japan
                Author notes
                [* ]Correspondence to: Nakamuta, N., Laboratory of Veterinary Anatomy, Faculty of Agriculture, Iwate University, 3–18–8 Ueda, Morioka, Iwate 020–8550, Japan. e-mail: nakamuta@ 123456iwate-u.ac.jp
                Article
                Publisher ID: 14-0234
                DOI: 10.1292/jvms.14-0234
                PMC ID: 4349543
                PubMed ID: 25231436
                SO-VID: ea93bc92-132f-47eb-9197-2019211db473
                Copyright © ©2015 The Japanese Society of Veterinary Science
                License:

                This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License.

                History
                Date received : 07 May 2014
                Date accepted : 30 August 2014
                Categories
                Subject: Anatomy
                Subject: Note

                Keywords: aves,development,immnohistochemistry,olfactory organs
                Data availability:
                Keywords: aves, development, immnohistochemistry, olfactory organs

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