Print Email Facebook Twitter Peripheral cannabinoid 1 receptor blockade activates brown adipose tissue and diminishes dyslipidemia and obesity Title Peripheral cannabinoid 1 receptor blockade activates brown adipose tissue and diminishes dyslipidemia and obesity Author Boon, M.R. Kooijman, S. van Dam, A.D. Pelgrom, L.R. Berbée, J.F.P. Visseren, C.A.R. van Aggele, R.C. van den Hoek, A.M. Sips, H.C.M. Lombès, M. Havekes, L.M. Tamsma, J.T. Guigas, B. Meijer, O.C. Jukema, J.W. Rensen, P.C.N. Publication year 2014 Abstract The endocannabinoid system is an important player in energy metabolism by regulating appetite, lipolysis, and energy expenditure. Chronic blockade of the cannabinoid 1 receptor (CB1R) leads to long-term maintenance of weight loss and reduction of dyslipidemia in experimental and human obesity. The molecular mechanism by which CB1R blockade reverses dyslipidemia in obesity has not yet been clarified. In this study, we showed that CB1R blockade with the systemic CB1R blocker rimonabant enhanced whole-body energy expenditure and activated brown adipose tissue (BAT), indicated by increased expression of genes involved in BAT thermogenesis and decreased lipid droplet size in BAT. This was accompanied by selectively increased triglyceride (TG) uptake by BAT and lower plasma TG levels. Interestingly, the effects on BAT activation were still present at thermoneutrality and could be recapitulated by using the strictly peripheral CB1R antagonist AM6545, indicating direct peripheral activation of BAT. Indeed, CB1R blockade directly activated T37i brown adipocytes, resulting in enhanced uncoupled respiration, most likely via enhancing cAMP/PKA signaling via the adrenergic receptor pathway. Our data indicate that selective targeting of the peripheral CB1R in BAT has therapeutic potential in attenuating dyslipidemia and obesity. Subject LifeMHR - Metabolic Health ResearchELSS - Earth, Life and Social SciencesBiomedical InnovationBiologyHealthy LivingRimonabantSympathetic nervous systemUncoupling protein 1Adrenergic receptorAm 6545Cannabinoid 1 receptorCannabinoid 1 receptor antagonistCyclic AMPFat dropletLipoproteinTriacylglycerolUnclassified drugAdrenergic systemAnimal experimentAnimal modelAnimal tissueAppetiteBrown adipocyteAlorimetryControlled studyDiet induced obesityDyslipidemiaEnergy expenditureEnergy metabolismFood intakeIn vitro studyIn vivo studyLipid analysisLipid storageLipolysisLipoprotein metabolismMaleMouseNonhumanOxygen consumptionPhysical activityThermogenesisTriacylglycerol blood levelWeight changeWeight reduction To reference this document use: http://resolver.tudelft.nl/uuid:b0839346-f554-43de-a5c2-48b18c8a7ada DOI https://doi.org/10.1096/fj.13-247643 TNO identifier 521630 ISSN 0892-6638 Source FASEB Journal, 28 (12), 5361-5375 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.