Effects of Nitric Oxide Inhibition on Mast Cell Degranulation in Rats
Author Information
Author(s): A. M. Northover, B. J. Northover
Primary Institution: Department of Pharmaceutical Sciences, School of Applied Sciences, De Montfort University, Leicester LE1 9BH, UK
Hypothesis
The study investigates the relationship between nitric oxide synthase inhibition and mast cell degranulation in rats.
Conclusion
Inhibition of nitric oxide synthase in the rat omentum leads to the release of platelet-activating factor, which degranulates mast cells and releases histamine.
Supporting Evidence
- Inhibition of nitric oxide synthase with L-NAME caused degranulation of omental mast cells.
- Pre-treatment with indomethacin significantly reduced the degranulation effects of L-NAME.
- PAF and U46619 were shown to enhance histamine release from peritoneal mast cells.
Takeaway
When a certain chemical stops the body from making a helper molecule, it can cause special cells to release a substance that makes you feel itchy or allergic.
Methodology
The study used isolated rat mast cells and examined their degranulation in response to various agents, including L-NAME and PAF.
Participant Demographics
Female rats weighing about 250g were used in the experiments.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
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