Inhibition of acute pulmonary and systemic inflammation by 1,7-dimethylxanthine.

L. Geraets, A. Haegens, A.R. Weseler, K. Brauers, J.H. Vernooy, E.F. Wouters, A. Bast, G.J. Hageman

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The nuclear enzyme poly(ADP-ribose) polymerse-1 (PARP-1) has previously been reported to play an important role in lipopolysaccharide (LPS)-induced pulmonary inflammation and is highly activated in COPD patients. In the present study, the anti-inflammatory efficacy of a previously identified poly(ADP-ribose) polymerase-1 (PARP-1) inhibiting caffeine metabolite, 1,7-dimethylxanthine, was both in vivo as well as ex vivo evaluated. Orally administered 1,7-dimethylxanthine significantly attenuated lung myeloperoxidase-levels, transcription of IL-6, TNF-alpha, MIP1alpha and MIP2 genes as well as PAR-polymer formation in a mouse model of intratracheally LPS-induced acute pulmonary inflammation. Serum amyloid P component and plasma IL-6 were also lowered in 1,7-dimethylxanthine treated mice, indicating a reduced systemic inflammatory response. In addition, at 24h after LPS administration anti-inflammatory effects of 1,7-dimethylxanthine appeared more pronounced than those of the orally administered PARP-1 inhibitor 3-aminobenzamide. In the second model, in blood of COPD-patients and healthy controls ex vivo pre-incubated with a physiological concentration of 1,7-dimethylxanthine (10microM), LPS-induced production of the cytokines IL-6 and TNF-alpha was significantly suppressed. 1,7-Dimethylxanthine exerts anti-inflammatory effects, both in vivo mouse as well as ex vivo human. These results suggest that the PARP-1 inhibiting caffeine metabolite 1,7-dimethylxanthine may have therapeutic potential in pulmonary inflammatory diseases such as COPD.
Original languageEnglish
Pages (from-to)132-139
Number of pages8
JournalEuropean Journal of Pharmacology
Volume629
Issue number1-3
DOIs
Publication statusPublished - 10 Mar 2010

Keywords

  • 1,7-dimethylxanthine
  • COPD
  • Cytokine
  • Inflammation
  • Poly(ADP-ribose) polymerase-1
  • Pulmonary disease
  • NECROSIS-FACTOR-ALPHA
  • ACUTE LUNG INFLAMMATION
  • POLY(ADP-RIBOSE) POLYMERASE-1
  • TRANSCRIPTIONAL ACTIVATION
  • RIBOSE POLYMERASE
  • EPITHELIAL-CELLS
  • GENE-EXPRESSION
  • ENDOTOXIC-SHOCK
  • CAFFEINE
  • DISEASE

Cite this