{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T21:13:52Z","timestamp":1790802832212,"version":"4.1.0"},"reference-count":55,"publisher":"Wiley","issue":"18","license":[{"start":{"date-parts":[[2018,8,10]],"date-time":"2018-08-10T00:00:00Z","timestamp":1533859200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000274","name":"British Heart Foundation","doi-asserted-by":"publisher","award":["FS\/11\/81\/29331"],"award-info":[{"award-number":["FS\/11\/81\/29331"]}],"id":[{"id":"10.13039\/501100000274","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bpspubs.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["British J Pharmacology"],"published-print":{"date-parts":[[2018,9]]},"abstract":"<jats:sec><jats:title>Background and Purpose<\/jats:title><jats:p>In response to noradrenaline, healthy perivascular adipose tissue (PVAT) exerts an anticontractile effect on adjacent small arterial tissue. Organ bath solution transfer experiments have demonstrated the release of PVAT\u2010derived relaxing factors that mediate this function. The present studies were designed to investigate the mechanism responsible for the noradrenaline\u2010induced PVAT anticontractile effect.<\/jats:p><\/jats:sec><jats:sec><jats:title>Experimental Approach<\/jats:title><jats:p><jats:italic>In vitro<\/jats:italic>rat small arterial contractile function was assessed using wire myography in the presence and absence of PVAT and the effects of sympathomimetic stimulation on the PVAT environment explored using Western blotting and assays of organ bath buffer.<\/jats:p><\/jats:sec><jats:sec><jats:title>Key Results<\/jats:title><jats:p>PVAT elicited an anticontractile effect in response to noradrenaline but not phenylephrine stimulation. In arteries surrounded by intact PVAT, the \u03b2<jats:sub>3<\/jats:sub>\u2010adrenoceptor agonist, CL\u2010316243, reduced the vasoconstrictor effect of phenylephrine but not noradrenaline. K<jats:sub>v<\/jats:sub>7 channel inhibition using XE 991 reversed the noradrenaline\u2010induced anticontractile effect in exogenously applied PVAT studies. Adrenergic stimulation of PVAT with noradrenaline and CL\u2010316243, but not phenylephrine, was associated with increased adipocyte\u2010derived NO production, and the contractile response to noradrenaline was augmented following incubation of exogenous PVAT with L\u2010NMMA. PVAT from eNOS<jats:sup>\u2212\/\u2212<\/jats:sup>mice had no anticontractile effect. Assays of adipocyte cAMP demonstrated an increase with noradrenaline stimulation implicating G\u03b1<jats:sub>s<\/jats:sub>signalling in this process.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions and Implications<\/jats:title><jats:p>We have shown that adipocyte\u2010located \u03b2<jats:sub>3<\/jats:sub>\u2010adrenoceptor stimulation leads to activation of G\u03b1<jats:sub>s<\/jats:sub>signalling pathways with increased cAMP and the release of adipocyte\u2010derived NO. This process is dependent upon K<jats:sub>v<\/jats:sub>7 channel function. We conclude that adipocyte\u2010derived NO plays a central role in anticontractile activity when rodent PVAT is stimulated by noradrenaline.<\/jats:p><\/jats:sec>","DOI":"10.1111\/bph.14433","type":"journal-article","created":{"date-parts":[[2018,7,6]],"date-time":"2018-07-06T22:49:46Z","timestamp":1530917386000},"page":"3685-3698","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["\u03b2<sub>3<\/sub>\u2010Adrenoceptor stimulation of perivascular adipocytes leads to increased fat cell\u2010derived NO and vascular relaxation in small arteries"],"prefix":"10.1111","volume":"175","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1520-5933","authenticated-orcid":false,"given":"Charlotte E","family":"Bussey","sequence":"first","affiliation":[{"name":"Institute of Cardiovascular Sciences, University of Manchester Manchester 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