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Artículo

Changes in neurosteroidogenesis during demyelination and remyelination in cuprizone-treated mice

Leicaj, María L.; Pasquini, Laura AndreaIcon ; Lima, Analia EthelIcon ; Gonzalez Deniselle, Maria ClaudiaIcon ; Pasquini, Juana MariaIcon ; De Nicola, Alejandro F.; Garay, Laura InesIcon
Fecha de publicación: 11/2018
Editorial: Wiley Blackwell Publishing, Inc
Revista: Journal of Neuroendocrinology
ISSN: 0953-8194
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Neurociencias; Neurociencias

Resumen

Changes of neurosteroids may be involved in the pathophysiology of multiple sclerosis (MS). The present study investigated whether changes of neurosteroidogenesis also occurred in the grey and white matter regions of the brain in mice subjected to cuprizone‐induced demyelination. Accordingly, we compared the expression of neurosteroidogenic proteins, including steroidogenic acute regulatory protein (StAR), voltage‐dependent anion channel (VDAC) and 18 kDa translocator protein (TSPO), as well as neurosteroidogenic enzymes, including the side chain cleavage enzyme (P450scc), 3β‐hydroxysteroid dehydrogenase/isomerase and 5α‐reductase (5α‐R), during the demyelination and remyelination periods. Using immunohistochemistry and a quantitative polymerase chain reaction, we demonstrated a decreased expression of StAR, P450scc and 5α‐R with respect to an increase astrocytic and microglial reaction and elevated levels of tumor necrosis factor (TNF)α during the cuprizone demyelination period in the hippocampus, cortex and corpus callosum. These parameters, as well as the glial reaction, were normalised after 2 weeks of spontaneous remyelination in regions containing grey matter. Conversely, persistent elevated levels of TNFα and low levels of StAR and P450scc were observed during remyelination in corpus callosum white matter. We conclude that neurosteroidogenesis/myelination status and glial reactivity are inversely related in the hippocampus and neocortex. Establishing a cause and effect relationship for the measured variables remains a future challenge for understanding the pathophysiology of MS.
Palabras clave: CUPRIZONE MODEL , DEMYELINATION , MICROGLIA , NEUROSTEROIDOGENESIS , REMYELINATION
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/93639
URL: http://doi.wiley.com/10.1111/jne.12649
DOI: http://dx.doi.org/10.1111/jne.12649
Colecciones
Articulos(IBYME)
Articulos de INST.DE BIOLOGIA Y MEDICINA EXPERIMENTAL (I)
Articulos(IQUIFIB)
Articulos de INST.DE QUIMICA Y FISICO-QUIMICA BIOLOGICAS "PROF. ALEJANDRO C. PALADINI"
Citación
Leicaj, María L.; Pasquini, Laura Andrea; Lima, Analia Ethel; Gonzalez Deniselle, Maria Claudia; Pasquini, Juana Maria; et al.; Changes in neurosteroidogenesis during demyelination and remyelination in cuprizone-treated mice; Wiley Blackwell Publishing, Inc; Journal of Neuroendocrinology; 30; 11; 11-2018; 1-15
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