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This study delineates the central neural substrate for the inhibition of rat brown adipose tissue (BAT) and shivering thermogenesis by \u03b12-AR agonists. Nanoinjection of the \u03b12-AR agonist clonidine (1.2 nmol) into the rostral raphe pallidus area (rRPa) inhibited BAT sympathetic nerve activity (SNA) and BAT thermogenesis. Subsequent nanoinjection of the \u03b12-AR antagonist idazoxan (6 nmol) into the rRPa reversed the clonidine-evoked inhibition of BAT SNA and BAT thermogenesis. Systemic administration of the \u03b12-AR agonists dexmedetomidine (25 \u03bcg\/kg, i.v.) and clonidine (100 \u03bcg\/kg, i.v.) inhibited shivering EMGs, BAT SNA, and BAT thermogenesis, effects that were reversed by nanoinjection of idazoxan (6 nmol) into the rRPa. Dexmedetomidine (100 \u03bcg\/kg, i.p.) prevented and reversed lipopolysaccharide-evoked (10 \u03bcg\/kg, i.p.) thermogenesis in free-behaving rats. Cholera toxin subunit b retrograde tracing from rRPa and pseudorabies virus transynaptic retrograde tracing from BAT combined with immunohistochemistry for catecholaminergic biosynthetic enzymes revealed the ventrolateral medulla as the source of catecholaminergic input to the rRPa and demonstrated that these catecholaminergic neurons are synaptically connected to BAT. Photostimulation of ventrolateral medulla neurons expressing the PRSx8-ChR2-mCherry lentiviral vector inhibited BAT SNA via activation of \u03b12-ARs in the rRPa. These results indicate a potent inhibition of BAT and shivering thermogenesis by \u03b12-AR activation in the rRPa, and suggest a therapeutic potential of \u03b12-AR agonists for reducing potentially lethal elevations in body temperature during excessive fever.<\/jats:p>","DOI":"10.1523\/jneurosci.4701-12.2013","type":"journal-article","created":{"date-parts":[[2013,1,30]],"date-time":"2013-01-30T18:05:15Z","timestamp":1359569115000},"page":"2017-2028","source":"Crossref","is-referenced-by-count":94,"title":["\u03b12 Adrenergic Receptor-Mediated Inhibition of Thermogenesis"],"prefix":"10.1523","volume":"33","author":[{"given":"Christopher J.","family":"Madden","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Domenico","family":"Tupone","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Georgina","family":"Cano","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaun F.","family":"Morrison","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"393","published-online":{"date-parts":[[2013,1,30]]},"reference":[{"key":"2023041304013222000_33.5.2017.1","doi-asserted-by":"publisher","DOI":"10.1113\/jphysiol.2009.177535"},{"key":"2023041304013222000_33.5.2017.2","doi-asserted-by":"publisher","DOI":"10.1113\/jphysiol.2012.232157"},{"key":"2023041304013222000_33.5.2017.3","doi-asserted-by":"publisher","DOI":"10.1016\/0304-3940(87)90110-8"},{"key":"2023041304013222000_33.5.2017.4","doi-asserted-by":"publisher","DOI":"10.1002\/cne.10643"},{"key":"2023041304013222000_33.5.2017.5","doi-asserted-by":"publisher","DOI":"10.1152\/ajpregu.00039.2010"},{"key":"2023041304013222000_33.5.2017.6","doi-asserted-by":"publisher","DOI":"10.1002\/cne.21140"},{"key":"2023041304013222000_33.5.2017.7","doi-asserted-by":"publisher","DOI":"10.1016\/0014-2999(87)90125-7"},{"key":"2023041304013222000_33.5.2017.8","first-page":"408","article-title":"Role of imidazole receptors in the vasodepressor response to clonidine analogs in the rostral ventrolateral medulla","volume":"253","author":"Ernsberger","year":"1990","journal-title":"J Pharmacol Exp Ther"},{"key":"2023041304013222000_33.5.2017.9","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1111\/j.1749-6632.1995.tb32388.x","article-title":"I1-imidazoline receptors. 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