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- W2079696452 abstract "The interplay between neuregulins and the ErbB receptor family has a pivotal role in the development of several tissues, including the nervous system, and is maintained in the adult olfactory system where extensive plasticity and neurogenesis are retained. In the present work we show the immunohistochemical localization of ErbB-3 and ErbB-4 in the olfactory system of adult normal and lesioned mice. The expression of ErbB-3 is demonstrated to be restricted to the ensheathing cells of the olfactory nerve and to a few substentacular cells of the olfactory epithelium (OE). ErbB-3 staining circumvents the glomeruli but is never observed inside them or elsewhere in the adult olfactory bulb. Conversely, ErbB-4 immunoreactivity is found in all the periglomerular and mitral/tufted cells of the olfactory bulb (OB) and to a minor extent in the olfactory neurons and basal cells of the OE. Interestingly enough, cells coming out from the rostral migratory stream of the subependymal layer (SEL), as well as isolated cells in the granule cell layer, possibly migrating cells, strongly stained for ErbB-4 expression. Lesions of the olfactory epithelium have been performed by unilateral intranasal irrigation with ZnSO4 and 3 weeks after the irrigation, the olfactory bulbs were analyzed for olfactory marker protein (OMP), tyrosine hydroxylase (TH), ErbB-3 and ErbB-4 expression. In the deafferented OB, the drastic loss of immunoreactivity for OMP was accompanied by a strong reduction of ErbB-3 expression. Most of the deafferented dopaminergic interneurons switched off TH expression. In the deafferented periglomerular and mitral/tufted cells ErbB-4 expression was turned off and down, respectively. No differences were noted at the granular cell layer level in the deafferented OB with respect to control. Taken together our results suggest that, in normal conditions, neuregulins are involved in the survival of the ensheathing cells of the olfactory nerve through ErbB-3 activation and in the functional activity of postsynaptic neurons through ErbB-4 activation." @default.
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- W2079696452 date "1998-11-01" @default.
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- W2079696452 title "ErbB‐3 and ErbB‐4 Expression in the Mouse Olfactory System<sup>a</sup>" @default.
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- W2079696452 doi "https://doi.org/10.1111/j.1749-6632.1998.tb10578.x" @default.
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