Cytokine release from adipose tissue of nonobese individuals

Rotter Sopasakis, Victoria,1972Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för internmedicin,Institute of Internal Medicine, Dept of Medicine (author)

Explants of human adipose tissue from nonobese subjects were cultured for 24 h with or without the presence of 20 ng/ml TNFalpha. Gene expression and/or medium concentrations of interleukin (IL)-1beta, IL-1 receptor antagonist (IL-1 RA), TNFalpha, IL-6, IL-8, resistin, PAI-1 and leptin were analysed. TNFalpha increased the mRNA levels of TNFalpha itself as well as IL-6, IL-8, IL-1beta and PAI-1, but not leptin. The medium concentrations of IL-1 RA, IL-6 and IL-8 were markedly increased by TNFalpha while no measurable release of TNFalpha, resistin or IL-1beta to the medium was found. Thus, human adipose tissue from nonobese individuals releases substantial amounts of IL-6, IL-8 and IL-1 RA and the gene expression of these cytokines, like that of IL-1beta and PAI-1, is regulated by TNFalpha. However, since neither TNFalpha, resistin or IL-1beta was found in the culture medium, such a regulatory effect by TNFalpha on adipose tissue in vivo is likely to be mediated through a paracrine mechanism where invaded inflammatory cells may play a critical role.

Nagaev, Ivan,1962Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för internmedicin,Institute of Internal Medicine, Dept of Medicine(Swepub:gu)xnagiv (author)
Smith, Ulf,1943Gothenburg University,Göteborgs universitet,Institutionen för invärtesmedicin, Avdelningen för internmedicin,Institute of Internal Medicine, Dept of Medicine(Swepub:gu)xsmiul (author)
Göteborgs universitetInstitutionen för invärtesmedicin, Avdelningen för internmedicin (creator_code:org_t)

In:Int J Obes (Lond): Springer Science and Business Media LLC29:9, s. 1144-70307-0565
In:International Journal of Obesity: Springer Science and Business Media LLC29:9, s. 1144-71476-5497

By the author/editor: Rotter Sopasakis ...; Nagaev, Ivan, 19 ...; Smith, Ulf, 1943

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