Journal
MECHANISMS OF AGEING AND DEVELOPMENT
Volume 196, Issue -, Pages -Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.mad.2021.111473
Keywords
Astrocytes; Microglia; Myelin; Neuroactive steroids; Sex chromosomes; Steroid receptors
Categories
Funding
- CIBEROBN
- CIBERFES
- Fondo de Investigacion Sanitaria [PI1900166]
- Agencia Estatal de Investigacion, Ministerio de Ciencia e Innovacion [BFU2017-82565-C21-R2, BFU2017-82754-R]
- Fondo Europeo de Desarrollo Regional (FEDER)
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Diseases and changes in the nervous system related to aging often exhibit sex-specific characteristics, with glial cells playing a major role in the endogenous response of neural tissue. The sex-specific response of glial cells is influenced by sex chromosome genes, gonadal hormones, and neuroactive steroid hormone metabolites. This response may be crucial in understanding and potentially treating sex differences in pathological alterations of the nervous system.
Diseases and aging-associated alterations of the nervous system often show sex-specific characteristics. Glial cells play a major role in the endogenous homeostatic response of neural tissue, and sex differences in the glial transcriptome and function have been described. Therefore, the possible role of these cells in the generation of sex differences in pathological alterations of the nervous system is reviewed here. Studies have shown that glia react to pathological insults with sex-specific neuroprotective and regenerative effects. At least three factors determine this sex-specific response of glia: sex chromosome genes, gonadal hormones and neuroactive steroid hormone metabolites. The sex chromosome complement determines differences in the transcriptional responses in glia after brain injury, while gonadal hormones and their metabolites activate sex-specific neuroprotective mechanisms in these cells. Since the sex-specific neuroprotective and regenerative activity of glial cells causes sex differences in the pathological alterations of the nervous system, glia may represent a relevant target for sexspecific therapeutic interventions.
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