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Development, Vol 104, Issue 4 589-599, Copyright © 1988 by Company of Biologists

JOURNAL ARTICLES

Early innervation of the metanephric kidney

H Sariola, K Holm and S Henke-Fahle
Department of Pathology, University of Helsinki, Finland.

During kidney differentiation, the nephrogenic mesenchyme converts into renal tubules and the ureter bud branches to form the collecting system. Here we show that in the early undifferentiated kidney rudiment there is a third cell type present. In whole-mount preparations of cultured undifferentiated metanephric kidneys, neurones can be detected by immunohistochemical means with antibodies against the neurofilament triplet, 13AA8, and against neuronal cell surface gangliosides, Q211. Clusters of neuronal cell bodies can be seen in the mesenchyme close to the ureter bud. The terminal endings of neurites are found around the mesenchymal condensates that later become kidney tubules. A similar distribution of neurites can be revealed in tissue sections of kidney grafts growing in the chicken chorioallantoic membranes. In primary cultures of the ureter bud cells, neurones are constantly present. In another report, we have shown that, in experimental conditions, neurones are involved in regulation of kidney morphogenesis. The present results raise the possibility that neurones of the metanephric kidney may have this function in vivo as well.


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© The Company of Biologists Ltd 1988