Decreased expression of adrenomedullin during adipocyte-differentiation of 3T3-L1 cells

Yin Li, Kazuhito Totsune, Kazuhisa Takeda, Kazumichi Furuyama, Shigeki Shibahara, Kazuhiro Takahashi

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17 Citations (Scopus)


Adrenomedullin (AM) is a potent vasodilator peptide which has an inhibitory action on insulin secretion. Resistin is a novel peptide specifically secreted from adipocytes, and implicated in insulin resistance. We studied the expression of AM and resistin in 3T3-L1 adipocytes and preadipocytes by Northern blot analysis and radioimmunoassay. Immunoreactive-AM was detected in the culture media of 3T3-L1 preadipocytes and adipocytes, with higher concentrations found in preadipocytes. Northern blot analysis showed that AM mRNA was expressed in 3T3-L1 preadipocytes but was undetectable in adipocytes. In contrast, resistin mRNA was expressed in 3T3-L1 adipocytes, whereas it was not detected in 3T3-L1 preadipocytes. The present study thus showed that AM expression wa decreased, and resistin expression increased, during adipocyte-differentiation of 3T3-L1 cells.

Original languageEnglish
Pages (from-to)S41-S44
JournalHypertension Research
Issue numberSUPPL.
Publication statusPublished - 2003 Feb


  • Adipocytes
  • Adrenomedullin
  • NIH 3T3-L1 cells
  • Resistin


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