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The raphe nuclei ( Greek: ῥαφή, "seam") [1] are a moderate-size cluster of nuclei found in the brain stem. They have 5-HT1 receptors which are coupled with Gi/Go-protein -inhibiting adenyl cyclase. They function as autoreceptors in the brain and decrease the release of serotonin.
May 1, 2023 · The raphe nuclei are positioned midline in the brainstem throughout the midbrain, pons, and medulla. These nuclei contain primarily serotonergic neurons, which release serotonin (5-hydroxytryptamine) with autocrine and paracrine effects, as well as synaptic connections.
- Emily P. Walker, Prasanna Tadi
- 2023/05/01
- 2019
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Mar 8, 2023 · The raphe nuclei consist of clusters of neurons along the midline of the midbrain, pons and medulla. Of these, the dorsal and caudal raphe both house CO 2 chemoreceptors, and together form the main source of serotonin in the respiratory system (Wang et al., 2001; Severson et al., 2003; Teran et al., 2014; Figure 6A).
163 million (2017) [8] Major depressive disorder ( MDD ), also known as clinical depression, is a mental disorder [9] characterized by at least two weeks of pervasive low mood, low self-esteem, and loss of interest or pleasure in normally enjoyable activities. Introduced by a group of US clinicians in the mid-1970s, [10] the term was adopted by ...
- 20s
Aug 14, 2019 · The dorsal raphe nucleus (DRN) is a major source of neuromodulators in the central nervous system, and is the largest of the serotonergic nuclei, containing approximately a third of all serotonergic neurons (5-HT neurons) in the brain ( Hornung, 2010 ). DRN 5-HT neurons send highly divergent projections that target many functionally distinct ...
- Kee Wui Huang, Nicole E Ochandarena, Adrienne C Philson, Minsuk Hyun, Jaclyn E Birnbaum, Marcelo Cic...
- 10.7554/eLife.46464
- 2019
- eLife. 2019; 8: e46464.
Jul 27, 2017 · The dorsal raphe nucleus (DRN) is an important brain area for body-weight regulation. In this issue of Cell, Nectow et al. uncover cell-type-specific neural circuitry and pharmacology for appetite control within the DRN.
May 25, 2022 · Numerous researches have shown that the raphe nuclei 5-hydroxytryptamine (5-HT)ergic system plays an important role not only in many physiological functions such as mood regulation, but also in ...
