期刊
NEUROENDOCRINOLOGY
卷 94, 期 1, 页码 12-20出版社
KARGER
DOI: 10.1159/000328226
关键词
HPA axis; CRH signaling; CRH receptor; B-Raf; MAPK
资金
- University of Buenos Aires
- CONICET
- Agencia Nacional de Promocion Cientifica y Tecnologica in Argentina
- Max Plank Society
- NeuroNova GmbH in Germany
Corticotropin-releasing hormone (CRH) plays a key role in adjusting the basal and stress-activated hypothalamic-pituitary-adrenal axis (HPA). CRH is also widely distributed in extrahypothalamic circuits, where it acts as a neuroregulator to integrate the complex neuroendocrine, autonomic, and behavioral adaptive response to stress. Hyperactive and/or dysregulated CRH circuits are involved in neuroendocrinological disturbances and stress-related mood disorders such as anxiety and depression. This review describes the main physiological features of the CRH network and summarizes recent relevant information concerning the molecular mechanism of CRH action obtained from signal transduction studies using cells and wild-type and transgenic mice lines. Special focus is placed on the MAPK signaling pathways triggered by CRH through the CRH receptor 1 that plays an essential role in CRH action in pituitary corticotrophs and in specific brain structures. Recent findings underpin the concept of specific CRH-signaling pathways restricted to specific anatomical areas. Understanding CRH action at molecular levels will not only provide insight into the precise CRH mechanism of action, but will also be instrumental in identifying novel targets for pharmacological intervention in neuroendocrine tissues and specific brain areas involved in CRH-related disorders. Copyright (C) 2011 S. Karger AG, Basel
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