RGD Reference Report - Cannabinoids reduce granuloma-associated angiogenesis in rats by controlling transcription and expression of mast cell protease-5. - Rat Genome Database

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Cannabinoids reduce granuloma-associated angiogenesis in rats by controlling transcription and expression of mast cell protease-5.

Authors: De Filippis, D  Russo, A  D'Amico, A  Esposito, G  Pietropaolo, C  Cinelli, M  Russo, G  Iuvone, T 
Citation: De Filippis D, etal., Br J Pharmacol. 2008 Aug;154(8):1672-9. Epub 2008 Jun 16.
RGD ID: 2316220
Pubmed: PMID:18552882   (View Abstract at PubMed)
PMCID: PMC2518473   (View Article at PubMed Central)
DOI: DOI:10.1038/bjp.2008.211   (Journal Full-text)

BACKGROUND AND PURPOSE: Chronic inflammatory conditions, such as granulomas, are associated with angiogenesis. Mast cells represent the main cell type orchestrating angiogenesis, through the release of their granule content. Therefore, compounds able to modulate mast cell behaviour may be considered as a new pharmacological approach to treat angiogenesis-dependent events. Here, we tested the effect of selective cannabinoid (CB) receptor agonists in a model of angiogenesis-dependent granuloma formation induced by lambda-carrageenin in rats. EXPERIMENTAL APPROACH: Granulomas were induced by lambda-carrageenin-soaked sponges implanted subcutaneously on the back of male Wistar rats. After 96 h, implants were removed and granuloma formation was measured (wet weight); angiogenesis was evaluated by histological analysis and by the measurement of haemoglobin content. Mast cells in the granulomas were evaluated histologically and by RT-PCR and immunoblotting analysis for mast cell-derived proteins (rat mast cell protease-5 (rMCP-5) and nerve growth factor). Selective CB1 and CB2 receptor agonists(,) ACEA and JWH-015 (0.001-0.1 mg mL(-1)), were given locally only once, at the time of implantation. KEY RESULTS: The CB1 and CB2 receptor agonists decreased the weight and vascularization of granulomas after 96 h. This treatment also reduced mast cell number and activation in granulomatous tissue. Specifically, these compounds prevented the transcription and expression of rMCP-5, a protein involved in sprouting and advance of new blood vessels. CONCLUSION AND IMPLICATIONS: Modulation of mast cell function by cannabinoids reduced granuloma formation and associated angiogenesis. Therefore cannabinoid-related drugs may be useful in the management of granulomatous diseases accompanied by angiogenesis.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
negative regulation of mast cell activation  IDA 2316220; 2316220 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Cnr1  (cannabinoid receptor 1)
Cnr2  (cannabinoid receptor 2)


Additional Information