Membrane-initiated actions of estradiol that regulate reproduction, energy balance and body temperature

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24 Citations (Scopus)

Abstract

It is well known that many of the actions of estrogens in the central nervous system are mediated via intracellular receptor/transcription factors that interact with steroid response elements on target genes. However, there now exists compelling evidence for membrane estrogen receptors in hypothalamic and other brain neurons. But, it is not well understood how estrogens signal via membrane receptors, and how these signals impact not only membrane excitability but also gene transcription in neurons. Indeed, it has been known for sometime that estrogens can rapidly alter neuronal activity within seconds, indicating that some cellular effects can occur via membrane delimited events. In addition, estrogens can affect second messenger systems including calcium mobilization and a plethora of kinases to alter cell signaling. Therefore, this review will consider our current knowledge of rapid membrane-initiated and intracellular signaling by estrogens in the hypothalamus, the nature of receptors involved and how they contribute to homeostatic functions.

Original languageEnglish (US)
Pages (from-to)376-387
Number of pages12
JournalFrontiers in Neuroendocrinology
Volume33
Issue number4
DOIs
StatePublished - Oct 2012

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Body Temperature
Reproduction
Estradiol
Estrogens
Membranes
Neurons
Intracellular Membranes
Response Elements
Second Messenger Systems
Estrogen Receptors
Genes
Hypothalamus
Transcription Factors
Phosphotransferases
Central Nervous System
Steroids
Calcium
Brain

Keywords

  • μ-Opioid receptor
  • ERα
  • ERβ
  • Gαq-mER
  • GABA receptor
  • GIRK channels
  • GnRH
  • PKA
  • PKC
  • POMC

ASJC Scopus subject areas

  • Endocrine and Autonomic Systems

Cite this

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abstract = "It is well known that many of the actions of estrogens in the central nervous system are mediated via intracellular receptor/transcription factors that interact with steroid response elements on target genes. However, there now exists compelling evidence for membrane estrogen receptors in hypothalamic and other brain neurons. But, it is not well understood how estrogens signal via membrane receptors, and how these signals impact not only membrane excitability but also gene transcription in neurons. Indeed, it has been known for sometime that estrogens can rapidly alter neuronal activity within seconds, indicating that some cellular effects can occur via membrane delimited events. In addition, estrogens can affect second messenger systems including calcium mobilization and a plethora of kinases to alter cell signaling. Therefore, this review will consider our current knowledge of rapid membrane-initiated and intracellular signaling by estrogens in the hypothalamus, the nature of receptors involved and how they contribute to homeostatic functions.",
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