Neurosteroids; potential underpinning roles in maintaining homeostasis.

Abstract:

:The neuroactive steroids which are synthesized in the brain and nervous system are known as "Neurosteroids". These steroids have crucial functions such as contributing to the myelination and organization of the brain connectivity. Under the stressful circumstances, the concentrations of neurosteroid products such as allopregnanolone (ALLO) and allotetrahydrodeoxycorticosterone (THDOC) alter. It has been suggested that these stress-derived neurosteroids modulate the physiological response to stress. Moreover, it has been demonstrated that the hypothalamic-pituitary-adrenal (HPA) axis mediates the physiological adaptation following stress in order to maintain homeostasis. Although several regulatory pathways have been introduced, the exact role of neurosteroids in controlling HPA axis is not clear to date. In this review, we intend to discern specific pathways associated with regulation of HPA axis in which neuroactive steroids have the main role. In this respect, we propose pathways that may be initiated after neurosteroidogenesis in different brain subregions following acute stress which are potentially capable of activating or inhibiting the HPA axis.

journal_name

Gen Comp Endocrinol

authors

Rahmani B,Ghasemi R,Dargahi L,Ahmadiani A,Haeri A

doi

10.1016/j.ygcen.2015.09.030

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

242-250

eissn

0016-6480

issn

1095-6840

pii

S0016-6480(15)00274-9

journal_volume

225

pub_type

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