Chapter 2.1.3 Phenotypic and state-dependent expression of the electrical and morphological properties of oxytocin and vasopressin neurones
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Bidirectional neuro-glial signaling modalities in the hypothalamus: Role in neurohumoral regulation
2013, Autonomic Neuroscience: Basic and ClinicalCitation Excerpt :Thus, elucidating precise mechanisms that regulate firing activity in these centers has been a major focus of work in this field. Over the last two decades, we have gain significant insights on intrinsic membrane properties and synaptic physiology of magnocellular and preautonomic PVN/SON neurons, and we refer the readers to excellent reviews and articles on this topic (Armstrong and Stern, 1998; Luther and Tasker, 2000; Stern, 2001; Akine et al., 2003; Brown, 2004; Sonner and Stern, 2007; Bourque, 2008; Iremonger and Bains, 2008; Chen and Toney, 2009). More recently however, it has become increasingly clear that non-neuronal cell types, particularly astrocytes and microglial cells, actively participate in information processing in the brain (Volterra and Meldolesi, 2005; Perea et al., 2009; Araque and Navarrete, 2010).
Oxytocin, but not arginine vasopressin is involving in the antinociceptive role of hypothalamic supraoptic nucleus
2011, PeptidesCitation Excerpt :However many neurons in the brain, and especially in the hypothalamus, synthesize peptides. It is now thought that bursts of electrical activity might be generally important for releasing large amounts of peptide from peptide-secreting neurons [1]. However, it is still difficult to explain the OXT, but not AVP is involving in the antinociceptive role of SON.
The cell biology of oxytocin and vasopressin cells
2010, Hormones, Brain and Behavior OnlineThe cell biology of oxytocin and vasopressin cells
2009, Hormones, Brain and Behavior OnlineMilk ejection and its control
2006, Knobil and Neill's Physiology of ReproductionRegulation of Oxytocin Secretion
2005, Vitamins and HormonesCitation Excerpt :Magnocellular oxytocin cells express estrogen receptor β (Somponpun and Sladek, 2003; Somponpun et al., 2004) but not estrogen receptor α or progesterone receptors, although many inputs to them do (Francis et al., 2002b). Many changes have been described in the intrinsic properties of oxytocin cells in pregnancy and lactation (e.g., Armstrong and Stern, 1998; Carter et al., 2003; de Kock et al., 2003; Teruyama and Armstrong, 2002), as well as changes in the neuronal networks that regulate them (e.g. Cosgrave and Wakerley, 2002; Jankowski et al., 2004), but what these changes mean is less clear. For instance, there are more GABA synapses on oxytocin cells by the end of pregnancy, but the tonic GABA current density in each oxytocin cell is unaltered, so GABA must be proportionately less effective, balancing out the consequences of synaptic proliferation.