Isobutylmethylxanthine

IBMX

IBMX

Chemical compound

IBMX (3-isobutyl-1-methylxanthine), like other methylxanthine derivatives, is both a:

  1. competitive non-selective phosphodiesterase inhibitor[1] which raises intracellular cAMP, activates PKA, inhibits TNFα[2][3] and leukotriene[4] synthesis, and reduces inflammation and innate immunity,[4] and
  2. nonselective adenosine receptor antagonist.[5]
Quick Facts Names, Identifiers ...

As a phosphodiesterase inhibitor, IBMX has IC50 = 2–50 μM[6] and does not inhibit PDE8 or PDE9.[7]

References

  1. [1]
    Essayan, DM (November 2001). "Cyclic Nucleotide Phosphodiesterases". The Journal of Allergy and Clinical Immunology. 108 (5): 671–80. doi:10.1067/mai.2001.119555. PMID 11692087.
  2. [2]
    Deree, J; Martins, JO; Melbostad, H; Loomis, WH; Coimbra, R (June 2008). "Insights into the Regulation of TNF-α Production in Human Mononuclear Cells: The Effects of Non-Specific Phosphodiesterase Inhibition". Clinics (Sao Paulo). 63 (3): 321–8. doi:10.1590/S1807-59322008000300006. PMC 2664230. PMID 18568240.
  3. [3]
    Marques, LJ; Zheng, L; Poulakis, N; Guzman, J; Costabel, U (February 1999). "Pentoxifylline Inhibits TNF-α Production from Human Alveolar Macrophages". American Journal of Respiratory and Critical Care Medicine. 159 (2): 508–11. doi:10.1164/ajrccm.159.2.9804085. PMID 9927365.
  4. [4]
    Peters-Golden, M; Canetti, C; Mancuso, P; Coffey, MJ (15 January 2005). "Leukotrienes: Underappreciated Mediators of Innate Immune Responses" (PDF). Journal of Immunology. 174 (2): 589–94. doi:10.4049/jimmunol.174.2.589. PMID 15634873.
  5. [5]
    Daly, JW; Jacobson, KA; Ukena, D (1987). "Adenosine Receptors: Development of Selective Agonists and Antagonists". Progress in Clinical and Biological Research. 230: 41–63. PMID 3588607.
  6. [6]
    Beavo, JA; Rogers, NL; Crofford, OB; Hardman, JG; Sutherland, EW; Newman, EV (November 1970). "Effects of Xanthine Derivatives on Lipolysis and on Adenosine 3',5'-Monophosphate Phosphodiesterase Activity". Molecular Pharmacology. 6 (6): 597–603. PMID 4322367.
  7. [7]
    Soderling, SH; Beavo, JA (April 2000). "Regulation of cAMP and cGMP Signaling: New Phosphodiesterases and New Functions". Current Opinion in Cell Biology. 12 (2): 174–9. doi:10.1016/s0955-0674(99)00073-3. PMID 10712916.


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