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The authors wish to thank Professor Gerard Tramu (Universite de Bordeaux I, France) for the gift of primary antibodies and the Language Service of the Universidad de Salamanca (Spain) for supervising the English text. This work has been supported by "Programa XI: Financiacion de Unidades de Excelencia de la Universidad de Salamanca" (Spain).

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A close neuroanatomical relationship between the enkephalinergic (methionine-enkephalin) and tachykininergic (substance P) systems in the alpaca diencephalon

Publicado en:FOLIA HISTOCHEMICA ET CYTOBIOLOGICA. 58 (2): PMID 32412087-146 - 2020-01-01 58(2), DOI: 10.5603/FHC.a2020.0007

Autores: Sanchez, Pablo; Lisardo Sanchez, Manuel; Mangas, Arturo; Angel Aguilar, Luis; Covenas, Rafael

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Introduction. In the alpaca diencephalon, the distribution of immunoreactive cell bodies and fibers containing methionine-enkephalin (MET) or substance P (SP) has been studied. Material and methods. The immunohistochemical study was performed by standard method on the diencephalon of four male alpacas that lived at sea level. Results. Nerve fibers containing MET or SP were widely distributed in the thalamus and hypothalamus. METand SP-immunoreactive fibers showed a similar distribution in the whole diencephalon. Immunoreactive cell bodies containing MET or SP were only observed in the hypothalamus. The distribution of MET-immunoreactive cell bodies was more widespread than that observed for cell bodies containing SP. Conclusions. A close neuroanatomical relationship between the tachykininergic (SP) and enkephalinergic (MET) systems was observed in the whole diencephalon suggestive of the existence of multiple physiological interactions between both systems.

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