Local administration of WIN 55,212-2 reduces chronic granuloma-associated angiogenesis in rat by inhibiting NF-kappaB activation

J Mol Med (Berl). 2007 Jun;85(6):635-45. doi: 10.1007/s00109-007-0188-z. Epub 2007 Apr 20.

Abstract

Chronic inflammation is often associated with granuloma formation that is a hallmark of many human diseases. The transcription factor nuclear factor-kappa B (NF-kappaB) plays a central role in this process by regulating the expression of several pro-inflammatory genes. Cannabinoids (CBs) from Cannabis sativa L. exert a large number of biological effects including anti-inflammatory and anti-angiogenic effects. In this study, we investigated the role of CBs on granuloma formation induced by lambda-carrageenin-soaked sponge implant in rat. Our results show that local administration of WIN 55,212-2, a CB(1)/CB(2) agonist, given daily or at time of implantation significantly decreased weight and neo-angiogenesis in granuloma tissue and inhibited nuclear factor-kappa B (NF-kappaB)/DNA binding that was associated with a reduced inducible nitric oxide synthase (iNOS), cyclooxygenase 2 (COX-2), tumor necrosis factor alpha (TNF-alpha), and vascular endothelial growth factor (VEGF) messenger RNA (mRNA) and protein expression. Also, arachidonyl-2-chloroethylamide (ACEA), a CB(1) selective agonist, and JWH-015, a CB(2) selective agonist, exhibited the same effects that were reversed by SR141716-A and SR144528, respectively, CB(1) and CB(2) selective antagonists. These results indicate that CBs given locally may represent a potential therapeutic tool in controlling chronic inflammation avoiding psychotropic effects.

MeSH terms

  • Analgesics / administration & dosage*
  • Analgesics / pharmacology*
  • Animals
  • Benzoxazines / administration & dosage*
  • Benzoxazines / pharmacology*
  • Cannabinoid Receptor Agonists
  • Cannabinoid Receptor Antagonists
  • Carrageenan / pharmacology
  • Cell Movement / drug effects
  • Cell Nucleus / drug effects
  • Cell Nucleus / metabolism
  • Gene Expression Regulation / drug effects
  • Granuloma / pathology*
  • Leukocytes / cytology
  • Leukocytes / drug effects
  • Male
  • Morpholines / administration & dosage*
  • Morpholines / pharmacology*
  • NF-kappa B / metabolism*
  • Naphthalenes / administration & dosage*
  • Naphthalenes / pharmacology*
  • Neovascularization, Pathologic*
  • Protein Transport / drug effects
  • Rats
  • Rats, Wistar
  • Time Factors

Substances

  • Analgesics
  • Benzoxazines
  • Cannabinoid Receptor Agonists
  • Cannabinoid Receptor Antagonists
  • Morpholines
  • NF-kappa B
  • Naphthalenes
  • (3R)-((2,3-dihydro-5-methyl-3-((4-morpholinyl)methyl)pyrrolo-(1,2,3-de)-1,4-benzoxazin-6-yl)(1-naphthalenyl))methanone
  • Carrageenan