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J Morphol

Title:		Structural and ultrastructural studies on the developing vomeronasal sensory epithelium in the grass snake Natrix natrix (Squamata: Colubroidea)
Author(s):		Kaczmarek P; Rupik W;
Address:		"Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences, University of Silesia in Katowice, Katowice, Poland"
Journal Title:		J Morphol
Year:		2021
Volume:		20201225
Issue:		3
Page Number:		378 - 407
DOI:		10.1002/jmor.21311
ISSN/ISBN:		1097-4687 (Electronic) 0022-2887 (Linking)
Abstract:		"The sensory olfactory epithelium and the vomeronasal sensory epithelium (VSE) are characterized by continuous turnover of the receptor cells during postnatal life and are capable of regeneration after injury. The VSE, like the entire vomeronasal organ, is generally well developed in squamates and is crucial for detection of pheromones and prey odors. Despite the numerous studies on embryonic development of the VSE in squamates, especially in snakes, an ultrastructural analysis, as far as we know, has never been performed. Therefore, we investigated the embryology of the VSE of the grass snake (Natrix natrix) using electron microscopy (SEM and TEM) and light microscopy. As was shown for adult snakes, the hypertrophied ophidian VSE may provide great resolution of changes in neuron morphology located at various epithelial levels. The results of this study suggest that different populations of stem/progenitor cells occur at the base of the ophidian VSE during embryonic development. One of them may be radial glia-like cells, described previously in mouse. The various structure and ultrastructure of neurons located at different parts of the VSE provide evidence for neuronal maturation and aging. Based on these results, a few nonmutually exclusive hypotheses explaining the formation of the peculiar columnar organization of the VSE in snakes were proposed"
Keywords:		"Animals Cell Differentiation Colubridae/*anatomy & histology/embryology Embryo, Nonmammalian/anatomy & histology/ultrastructure Epithelium/*ultrastructure Vomeronasal Organ/*ultrastructure Jacobson's organ neurogenesis snake embryo;"
Notes:		"MedlineKaczmarek, Pawel Rupik, Weronika eng Research Support, Non-U.S. Gov't 2020/12/20 J Morphol. 2021 Mar; 282(3):378-407. doi: 10.1002/jmor.21311. Epub 2020 Dec 25"