β₁-Adrenergic receptors increase UCP1 in human MADS brown adipocytes and rescue cold-acclimated β₃-adrenergic receptor-knockout mice via nonshivering thermogenesis

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Mattsson, Charlotte L.Stockholms universitet,Avdelningen för fysiologi (author)

β₁-Adrenergic receptors increase UCP1 in human MADS brown adipocytes and rescue cold-acclimated β₃-adrenergic receptor-knockout mice via nonshivering thermogenesis

Article/chapterEnglish2011

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American Physiological Society,2011
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LIBRIS-ID:oai:DiVA.org:su-70772
https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-70772URI
https://doi.org/10.1152/ajpendo.00085.2011DOI

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Language:English
Summary in:English

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With the finding that brown adipose tissue is present and negatively correlated to obesity in adult man, finding the mechanism(s) of how to activate brown adipose tissue in humans could be important in combating obesity, type 2 diabetes, and their complications. In mice, the main regulator of nonshivering thermogenesis in brown adipose tissue is norepinephrine acting predominantly via β(3)-adrenergic receptors. However, vast majorities of β(3)-adrenergic agonists have so far not been able to stimulate human β(3)-adrenergic receptors or brown adipose tissue activity, and it was postulated that human brown adipose tissue could be regulated instead by β(1)-adrenergic receptors. Therefore, we have investigated the signaling pathways, specifically pathways to nonshivering thermogenesis, in mice lacking β(3)-adrenergic receptors. Wild-type and β(3)-knockout mice were either exposed to acute cold (up to 12 h) or acclimated for 7 wk to cold, and parameters related to metabolism and brown adipose tissue function were investigated. β(3)-knockout mice were able to survive both acute and prolonged cold exposure due to activation of β(1)-adrenergic receptors. Thus, in the absence of β(3)-adrenergic receptors, β(1)-adrenergic receptors are effectively able to signal via cAMP to elicit cAMP-mediated responses and to recruit and activate brown adipose tissue. In addition, we found that in human multipotent adipose-derived stem cells differentiated into functional brown adipocytes, activation of either β(1)-adrenergic receptors or β(3)-adrenergic receptors was able to increase UCP1 mRNA and protein levels. Thus, in humans, β(1)-adrenergic receptors could play an important role in regulating nonshivering thermogenesis.

Subject headings and genre

NATURVETENSKAP Biologi hsv//swe
NATURAL SCIENCES Biological Sciences hsv//eng
uncoupling protein 1
brown adipose tissue
obesity
type 2 diabetes
human multipotent adipose-derived stem cells

Added entries (persons, corporate bodies, meetings, titles ...)

Csikasz, Robert I.Stockholms universitet,Avdelningen för fysiologi(Swepub:su)rocs5038 (author)
Chernogubova, EkaterinaStockholms universitet,Avdelningen för fysiologi (author)
Yamamoto, Daniel L.Stockholms universitet,Avdelningen för fysiologi (author)
Högberg, Helena T.Stockholms universitet,Avdelningen för fysiologi (author)
Amri, Ez-Zoubir (author)
Hutchinson, Dana S.Stockholms universitet,Avdelningen för fysiologi (author)
Bengtsson, ToreStockholms universitet,Avdelningen för fysiologi(Swepub:su)tbeng (author)
Stockholms universitetAvdelningen för fysiologi (creator_code:org_t)

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In:American Journal of Physiology. Endocrinology and Metabolism: American Physiological Society301:6, s. E1108-E11180193-18491522-1555

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