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Parabrachial nuclei

Putative sites of action of opioid analgesics (darker color). On the left, sites of action on the pain transmission pathway from the periphery to the higher centers are shown. A Direct action of opioids on inflamed peripheral tissues. B Inhibition occurs in the spinal cord. C Possible site of action in the thalamus. Different thalamic regions project to somatosensory (SS) or limbic (L) cortex. Parabrachial nuclei (medulla/pons) projects to the amygdala. On the right, actions of opioids on pain-modulating neurons in the midbrain (D) and medulla (E) indirectly control pain transmission pathways. [Pg.698]

Schematic diagram of the gustatory pathway in rodents. Taste receptor cells are innervated by one of three cranial nerves (VII, IX, or X), which project topographically into the rostral portion of nucleus of the solitary tract (NST). Cells within the NST send projections into the reticular formation (RF), through which connections are made to oral motor nuclei V, VII, and XII and the nucleus ambiguous (NA). Ascending fibers connect to the parabrachial nuclei (PbN) of the pons, from which two parallel pathways emerge. One pathway carries taste information to the insular cortex (IC) via the ventral posterior medial nucleus, parvicellularis (VPMpc), of the thalamus. The other pathway projects into areas of the limbic forebrain involved in food and water regulation, reinforcement, reward, and stress, including the lateral hypothalamus (LH), the central nucleus ofthe amygdala (CeA), and the bed nucleus of the stria terminalis (BST). These areas and the IC are interconnected and send descending projections back to both the PbN and NST... Schematic diagram of the gustatory pathway in rodents. Taste receptor cells are innervated by one of three cranial nerves (VII, IX, or X), which project topographically into the rostral portion of nucleus of the solitary tract (NST). Cells within the NST send projections into the reticular formation (RF), through which connections are made to oral motor nuclei V, VII, and XII and the nucleus ambiguous (NA). Ascending fibers connect to the parabrachial nuclei (PbN) of the pons, from which two parallel pathways emerge. One pathway carries taste information to the insular cortex (IC) via the ventral posterior medial nucleus, parvicellularis (VPMpc), of the thalamus. The other pathway projects into areas of the limbic forebrain involved in food and water regulation, reinforcement, reward, and stress, including the lateral hypothalamus (LH), the central nucleus ofthe amygdala (CeA), and the bed nucleus of the stria terminalis (BST). These areas and the IC are interconnected and send descending projections back to both the PbN and NST...
Gustatory neurons in the NST of rodents send second-order projections to the parabrachial nuclei... [Pg.112]

Cho YK, Li C-S, Smith DV. 2002a. Gustatory projections from the nucleus ofthe solitary tract to the parabrachial nuclei in the hamster. Chem Senses 27 81-90. [Pg.130]

A major side-effect of morphine is respiratory depression. Opiates are believed to cause this effect via actions in brainstem nuclei, fi receptor immunoreactivity and mRNA were detected in neurons of the nucleus of the solitary tract, nucleus ambiguous, and parabrachial nucleus. mRNA was detected in the bed nucleus of the stria terminalis which projects to the nucleus of the solitary tract, fi receptor immunoreactivity is found in the nucleus of the solitary tract and dorsal rhizotomy reduced receptor immunoreactivity in the nucleus suggesting a presynaptic localization of the receptor. [Pg.465]

Medium-high density of D2 receptors was found in the islands of Calleja, ventral pallidum, zona incerta, GP, central amygdala, in some cells of the anterior lobe of the pituitary, and at several sites in the forebrain the laterodorsal septal area, hippocampus, subiculum, lateral habenula, STh, lateral mammillary bodies. D2 receptors were also found with a medium-high density in various cortical fields prefrontal, anterior cingulate, entorhinal and perirhinal cortices. In the brain stem, medium-high density of D2 receptors was found in the VTA, SNc, ventral SNr, parabrachial nucleus, superior and inferior colliculi, dorsal raphe nucleus and locus coeruleus. [Pg.74]

Moga MM, Gray TS (198 5) Evidence for corticotropin-releasing factor, neurotensin and somatostatin in the neural pathway from the central nculeus of the amygdala to the parabrachial nucleus. J Comp Neurol 241 275-284. [Pg.514]

Reilly S (1999) The parabrachial nucleus and conditioned taste aversion. Brain Res Bull 48 239-254... [Pg.265]

PARABRACHIAL NUCLEUS. The parabrachial nudeus is dehneated in accordance with Fnlwher and Saper (1984), Herbert et al (1990), Whitehead (1990), and Herbert and Saper (1990). The external part of the lateral parabrachial nucleus and medial parabrachial nucleus are marked by NADPH-diaphorase positive ceUs and fibers (Paxinos et al, in press [b]). [Pg.484]

Herbert, H., Moga, M., and Saper, C. (1990). Connections of the parabrachial nucleus with the nucleus of the solitary tract and the medullary reticular formation in the rat. J. Comp. Neurol. 293, 540-580. [Pg.486]

Mo5DL motor trigeminal nucleus, dorsolateral part 56-57 Mo5VM motor trigeminal nucleus, ventromedial part 56-57 Mol molecular layer of the dentate gyrus 35, 79, 87, 106 mp mammillary peduncle 39-43, 80-81, 94-95 MPA medial preoptic area 18-23, 80-81, 93-97 MPB medial parabrachial nucleus 54-60, 83-84, 99-101 MPBE medial parabrachial nucleus external part 56-57 MPn medial pontine nucleus 51 MPO medial preoptic nucleus 23-24, 80, 92-97 MPOC medial preoptic nucleus, central part 21-22, 80 MPOL medial preoptic nucleus, lateral part 18-22 MPOM medial preoptic nucleus, medial part 21-22 MPT medial pretectal nucleus 38-41, 80, 109-110 MRe mammillary recess of the 3rd ventricle 36-38, 79 MRVL medial rostroventrolateral medulla 67-68 MS medial septal nucleus 13-18, 79-80, 103-108 MSO medial superior olive 54-60, 90... [Pg.495]

Saper CB, LoewyAD. 1980. Efferent connections ofthe parabrachial nucleus in the rat. Brain Res 197 291-317. [Pg.133]

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See also in sourсe #XX -- [ Pg.110 , Pg.112 ]



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