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  • Chronic TNFα and cAMP pre-t...
    Bézaire, Véronic; Mairal, Aline; Anesia, Rodica; Lefort, Corinne; Langin, Dominique

    FEBS letters, September 17, 2009, Letnik: 583, Številka: 18
    Journal Article

    We examined the effects of chronic TNFα and dibutyryl-cAMP (Db-cAMP) pre-treatment on the lipolytic machinery of human hMADS adipocytes. TNFα decreased adipose triglyceride lipase (ATGL) and hormone-sensitive lipase (HSL) protein content and triglycerides (TG)-hydrolase activity but increased basal lipolysis due to a marked reduction in perilipin (PLIN) protein content. Conversely, Db-cAMP increased ATGL and HSL protein content but prevented PLIN phosphorylation, the net result being accentuated basal lipolysis. In forskolin-stimulated conditions, TNFα and Db-cAMP pre-treatment decreased stimulated TG-hydrolase activity and impaired PLIN phosphorylation. Together, this resulted in a severely attenuated response to forskolin-stimulated lipolysis.