Abstract
Apoptosis of neutrophil granulocytes is a critical event in the resolution of inflammation. Neutrophils have a short lifespan which can be modulated by aspirin. In this work we studied the effect of a nitroaspirin (NCX4016) on apoptosis of inflammatory granulocytes. This aspirin analogue has been synthesized to reduce the side effects of aspirin in the gastrointestinal tract. Inflammatory granulocytes have been isolated from polyvinyl sponges implanted under the skin of Albino Oxford (AO) rats. Inflammatory cells that were isolated 20 hours later were about 95% neutrophil granulocytes. The cells were cultivated 24h with different concentrations of NCX4016 ranging from 0.25 μM to 500 μM. After that period, apoptosis of neutrophils was assessed by morphological criteria, as well as by flow cytometry (after staining the cells with propidium iodide). We found that NCX4016 at concentrations from 50 to 500 μM induced the apoptosis of rat inflammatory granulocytes in a dose-dependent manner. However, at concentrations from 1 μM to 10 μM it inhibited apoptosis. In conclusion, our results suggest that anti-inflammatory properties of the NO-aspirin are additionally potentiated by the proapoptotic effect on granulocytes, which could be a novel mechanism of their action.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.