Modulation of forebrain function by nucleus incertus and relaxin-3/RXFP3 signaling
Scholar | Other documents of the author: Olucha-Bordonau, Francisco E.; Albert Gascó, Héctor; Ros Bernal, Francisco; Rytova, Valeria; Ong-Pålsson, Emma K. E.; Ma, Shuai; Sánchez-Pérez, Ana María; Gundlach, Andrew L.
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TitleModulation of forebrain function by nucleus incertus and relaxin-3/RXFP3 signaling
The nucleus incertus (NI) in the pontine tegmentum sends ascending projections to the midbrain, hypothalamus, amygdala, basal forebrain, hippocampus, and prefrontal cortex, and has a postulated role in modulating ... [+]
The nucleus incertus (NI) in the pontine tegmentum sends ascending projections to the midbrain, hypothalamus, amygdala, basal forebrain, hippocampus, and prefrontal cortex, and has a postulated role in modulating several forebrain functions. A substantial population of GABAergic NI neurons expresses the neuropeptide, relaxin‐3, which acts via the Gi/o‐protein‐coupled receptor, RXFP3, present throughout the forebrain target regions. Broad and specific manipulations of these systems by activation or inhibition of the NI or modulating RXFP3 signaling have revealed key insights into the likely influence of the NI/relaxin‐3/RXFP3 system on modalities including arousal, feeding, stress responses, anxiety and addiction, and attention and memory. This range of actions corresponds to a likely impact of NI/(relaxin‐3) projections on multiple integrated circuits, but makes it difficult to draw conclusions about a generalized function for this network. This review will focus on the key physiological process of oscillatory theta rhythm and the neural circuits that promote it during behavioral activation, highlighting the ability of NI and relaxin‐3/RXFP3 signaling systems to modulate these circuits. A better understanding of these mechanisms may provide a way to therapeutically adjust malfunction of forebrain activity present in several pathological conditions. [-]
Investigation projectUniversitat Jaume I / UJI-B2016-40; Spanish Ministerio de Educacion y Cultura Mobility Program / PRX17/00646; Universitat Jaume I FPI-UJI Predoctoral Research Scholarship / PREDOC/2014/35 E-2016-43; NHMRC (Australia) / 1067522; Dorothy Levien Foundation
Bibliographic citationOLUCHA‐BORDONAU, Francisco E., et al. Modulation of forebrain function by nucleus incertus and relaxin‐3/RXFP 3 signaling. CNS neuroscience & therapeutics, 2018, vol. 24, no 8, p. 694-702
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