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Nerve growth factor inhibits some acute experimental inflammations
M Amico-Roxas1, A Caruso, M G Leone
1Institute of Pharmacology, University of Catania Medical School, Italy.
Archives Internationales De Pharmacodynamie Et De Therapie
|May 1, 1989
Summary
Nerve growth factor (NGF) reduces acute inflammation and peritoneal dye leakage in animal models. NGF acts rapidly, inhibiting early inflammatory phases and reducing vascular permeability, suggesting a role in acute inflammatory processes.
Area of Science:
- Pharmacology
- Inflammation Research
- Neuroscience
Background:
- Nerve growth factor (NGF) is known for its role in neuronal development and survival.
- Its potential anti-inflammatory properties are less understood.
- Acute inflammation involves complex mechanisms including vascular permeability and cell migration.
Purpose of the Study:
- To investigate the anti-inflammatory effects of NGF in various acute inflammation models.
- To compare NGF's efficacy and onset of action with established anti-inflammatory drugs.
- To elucidate the potential mechanisms underlying NGF's anti-inflammatory activity.
Main Methods:
- Animal models of acute inflammation were used, including acetic acid peritonitis, carrageenin-induced paw oedema, serotonin paw oedema, and dextran paw oedema.
- NGF was administered via subcutaneous or subplantar routes.
- The effects of NGF were compared to indomethacin (INDO) and betamethasone (BTM).
- Specific anti-NGF antibodies were used to confirm NGF's role.
- In vitro tests assessed superoxide radical scavenging activity.
Main Results:
- NGF demonstrated significant inhibition of peritoneal dye leakage and paw oedema in a restricted dose range.
- NGF exhibited rapid onset of action, particularly in the early phase of carrageenin-induced oedema, outperforming INDO and BTM.
- NGF effectively reduced serotonin and dextran-induced paw oedema, with INDO and BTM showing limited or no effect in these models.
- Anti-NGF antibodies neutralized NGF's anti-inflammatory effects, while BTM and INDO activities remained unaffected.
- NGF showed limited efficacy in reducing exudate volume and cell migration in carrageenin pleurisy and no direct superoxide radical scavenging activity.
Conclusions:
- NGF possesses potent anti-inflammatory properties in several acute inflammation models.
- NGF's rapid action suggests it targets early inflammatory processes, potentially by reducing vascular permeability.
- These findings highlight NGF as a potential therapeutic agent for acute inflammatory conditions.