Publication: Sympathetic sprouting in dorsal root
ganglia (DRG): A recent histological finding?
Authors
García-Poblete, Eduardo ; Fernández-García, H. ; Moro-Rodríguez, E. ; Catalá-Rodríguez, M. ; Rico-Morales, M.L. ; García-Gómez de las Heras, M.S. ; Palomar-Gallego, M.A.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
During the nineties it was described, as an
original finding, the existence of afferent amyelinic
nerve endings in animal dorsal root ganglia (DRG)
caused by diverse experimental lesions. These works do
not take into account the historical studies carried out by
Ehrlich (1886), Ramón y Cajal (1890) and Dogiel (1885)
among others. Ramón y Cajal (1899) confirmed the
existence of these nerve endings naming them after their
discoverer as “Dogiel’s arborisations”. Ramón y Cajal
claims that these endings originate from fibres of
sympathetic nature, something supported by later
authors devoted to this topic. In any case, the same
authors remarked already a possible relationship with
pathological phenomena, nonetheless always referring to
the frequent occasions in which the same images
appeared in healthy animals. In this work we review the
bibliography about the classically named “Terminal
Dogiel’s nests” which in modern literature have been
referred to as sprouting of sympathetic axons in dorsal
root ganglia likely related with sympathetically
maintained pain. Furthermore, we present the finding,
not described up to date, of multiple afferent amyelinic
nervous endings related with the “Terminal Dogiel’s
nests” observed in different DRG from young adult
healthy rabbits.
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