Presence of multinucleate giant cells in normal thymus of nutria (Myocastor coypus)
Journal Title: Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society - Year 2009, Vol 2, Issue 2
Abstract
Collected thymus from three 12-months-old clinically healthy nutria were histologically processed. Multinucleate giant cells have been observed occurring as a response to the existence of an acidophil material in relatively large quantities. This material is result of keratinization of some reticuloepithelial cells, a process that appears more intense in nutria than in most species of mammals. Multinucleate giant cells are phagocyting this acidophil material and, where it forms large blocks, many multinucleate cells are grouped around them in a similar manner to that in reaction to the foreign body. It is a particular situation in which the body reacts somehow strange, treating some own structures as a foreign material. Note that multinucleate cells are not acting to remove the keratin from Hassall’s corpuscles, but only the results from keratinization of reticulo-epithelial cells uncorporate in the organized corpuscles. By eliminating of keratinized reticulo-epithelial cells which could be considered as starting points for apparition of new Hassall’s corpuscles, multinucleate giant cells attemper the rhythm of formation of Hassall’s corpuscles in nutria.
Authors and Affiliations
Viorel Miclăuş, I. Petrescu-Mag, Vasile Rus, Daniel Cadar, Liviu Oana, Ciprian Ober
Keywords
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