Liver at the nexus of rat postnatal HPA axis maturation and sexual dimorphism.
J Endocrinol
; 248(1): R1-R17, 2021 01.
Article
en En
| MEDLINE
| ID: mdl-33112814
ABSTRACT
Normal function of the hypothalamic-pituitary-adrenal (HPA) axis is critical for survival, and its development is choreographed for age-, sex- and context-specific actions. The liver influences HPA ontogeny, integrating diverse endocrine signals that inhibit or activate its development. This review examines how developmental changes in the expression of genes in the liver coordinate postnatal changes in multiple endocrine systems that facilitate the maturation and sexual dimorphism of the rat HPA axis. Specifically, it examines how the ontogeny of testicular androgen production, somatostatin-growth hormone activities, and hypothalamic-pituitary-thyroid axis activity intersect to influence the hepatic gene expression of insulin-like growth factor 1, corticosteroid-binding globulin, thyroxine-binding globulin, 11ß-hydroxysteroid dehydrogenase type 1 and 5α-reductase type 1. The timing of such molecular changes vary between mammalian species, but they are evolutionarily conserved and are poised to control homeostasis broadly, especially during adversity. Importantly, with the liver as their nexus, these diverse endocrine systems establish the fundamental organization of the HPA axis throughout postnatal development, and thereby ultimately determine the actions of glucocorticoids during adulthood.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Caracteres Sexuales
/
Sistema Hipotálamo-Hipofisario
/
Hígado
Límite:
Animals
Idioma:
En
Revista:
J Endocrinol
Año:
2021
Tipo del documento:
Article
País de afiliación:
Canadá