Title : Dynamics of dibutyryl cyclic AMP- and prostaglandin E2-mediated suppression of lipopolysaccharide-induced tumor necrosis factor alpha gene expression.

Pub. Date : 1989 Sep

PMID : 2547721






9 Functional Relationships(s)
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1 Dynamics of dibutyryl cyclic AMP- and prostaglandin E2-mediated suppression of lipopolysaccharide-induced tumor necrosis factor alpha gene expression. Dinoprostone tumor necrosis factor Mus musculus
2 The regulation of lipopolysaccharide (LPS)-induced tumor necrosis factor alpha (TNF) production by prostaglandin E2 (PGE2), forskolin, and dibutyryl cyclic AMP (cAMP) was examined at the cellular and molecular levels. Dinoprostone tumor necrosis factor Mus musculus
3 The regulation of lipopolysaccharide (LPS)-induced tumor necrosis factor alpha (TNF) production by prostaglandin E2 (PGE2), forskolin, and dibutyryl cyclic AMP (cAMP) was examined at the cellular and molecular levels. Dinoprostone tumor necrosis factor Mus musculus
4 The regulation of lipopolysaccharide (LPS)-induced tumor necrosis factor alpha (TNF) production by prostaglandin E2 (PGE2), forskolin, and dibutyryl cyclic AMP (cAMP) was examined at the cellular and molecular levels. Dinoprostone tumor necrosis factor Mus musculus
5 The regulation of lipopolysaccharide (LPS)-induced tumor necrosis factor alpha (TNF) production by prostaglandin E2 (PGE2), forskolin, and dibutyryl cyclic AMP (cAMP) was examined at the cellular and molecular levels. Dinoprostone tumor necrosis factor Mus musculus
6 The concomitant addition of PGE2, dibutyryl cAMP, or forskolin to LPS-challenged M phi s resulted in 50% inhibition of TNF production at 10(-7), 3 X 10(-6), and 3 X 10(-5) M, respectively. Dinoprostone tumor necrosis factor Mus musculus
7 Interestingly, delaying the addition of PGE2 or dibutyryl cAMP by 1.5 h post-LPS stimulation was also effective in suppressing the production of TNF bioactivity, but only dibutyryl cAMP was effective when its addition was delayed by 3 h. Northern (RNA) blot analysis of mRNA isolated from LPS-challenged M phi s treated with PGE2 or dibutyryl cAMP corroborated the bioactivity data. Dinoprostone tumor necrosis factor Mus musculus
8 Interestingly, delaying the addition of PGE2 or dibutyryl cAMP by 1.5 h post-LPS stimulation was also effective in suppressing the production of TNF bioactivity, but only dibutyryl cAMP was effective when its addition was delayed by 3 h. Northern (RNA) blot analysis of mRNA isolated from LPS-challenged M phi s treated with PGE2 or dibutyryl cAMP corroborated the bioactivity data. Dinoprostone tumor necrosis factor Mus musculus
9 The delayed addition of PGE2 or dibutyryl cAMP by 1.5 h post-LPS stimulation resulted in a suppression of TNF mRNA accumulation by 50 to 70%. Dinoprostone tumor necrosis factor Mus musculus