NDLI: Changes in neurotrophin-3 messenger RNA expression patterns in the prenatal rat tongue suggest guidance of developing somatosensory nerves to their final targets

Content Provider	Springer Nature Link
Author	srat, C. A. Olson, Lars
Copyright Year	1998
Abstract	While brain-derived neurotrophic factor (BDNF) messenger RNA (mRNA) has been localized in the developing gustatory epithelium, little information is available about neurotrophin-3 (NT-3) mRNA expression pattern in the prenatal developing gustatory and lingual epithelium. In the present study, using in situ hybridization histochemistry, we report on NT-3 mRNA expression in the tongue of rats. At embryonic day (E) 13–17, NT-3 mRNA was expressed subepithelially in the periphery of the developing tongue, as well as among developing muscle. At E19, there was a shift in the expression of NT-3 mRNA. It was then expressed in the surface epithelium of the developing tongue in the developing filiform papillae and, in higher concentrations, in top-surface and fringe epithelium of the developing circumvallate papillae, and top- and lateral-surface epithelium of the developing fungiform papillae. NT-3 mRNA expression in areas rich in somatosensory innervation of the tongue, as well as its specific expression in defined regions compared with BDNF, and the decreased labeling noted from prenatal and early postnatal animals to adults indicate a specific role for NT-3 in the development of lingual somatosensory innervation, as well as for maintenance of this innervation.
Starting Page	619
Ending Page	623
Page Count	5
File Format	PDF
ISSN	0302766X
Journal	Cell and Tissue Research
Volume Number	292
Issue Number	3
e-ISSN	14320878
Language	English
Publisher	Springer-Verlag
Publisher Date	1998-05-20
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Cell Biology Histology Pathology and Forensic Medicine

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