Aspirin Protected the Nitric Oxide/Cyclic Gmp Generating System in Human Peritoneum
| Autor: | Angel Celdrán, Antonio García-Méndez, Marta Escribano, F Manzarbeitia, María M. Arriero, L Munoz-Alameda, Santos Casado, P Jimenez, JC de la Pinta, A. Reyero, Antonio López-Farré |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
0301 basic medicine
medicine.medical_specialty medicine.medical_treatment Peritoneal inflammation Peritoneal dialysis Nitric oxide 03 medical and health sciences chemistry.chemical_compound Cyclic gmp 0302 clinical medicine Peritoneum Enos Internal medicine medicine Aspirin Endothelial nitric oxide synthase biology business.industry General Medicine biology.organism_classification 030104 developmental biology medicine.anatomical_structure Endocrinology chemistry Nephrology business 030217 neurology & neurosurgery medicine.drug |
| Zdroj: | Scopus-Elsevier |
| ISSN: | 1718-4304 0896-8608 |
| Popis: | ♦ Objective Changes in the expression of endothelial nitric oxide synthase (eNOS) in the peritoneum could be involved in the peritoneal dysfunction associated with peritoneal inflammation. The aim of the present study was to analyze the effect of Escherichia coli lipopolysaccharide (LPS) on eNOS expression in samples of human peritoneum. The effect of aspirin, a drug with anti-inflammatory properties, was also determined. ♦ Results The eNOS protein expressed in human peritoneal tissue was reduced by LPS (10 μg/mL) in a time-dependent manner. The eNOS was expressed mainly in capillary endothelial cells and mesothelial cells. Anti-inflammatory doses of aspirin (1 – 10 mmol/L) restored eNOS expression in LPS-stimulated human peritoneal tissue samples. The main intracellular receptor of NO, soluble guanylate cyclase (sGC), was also downregulated by LPS. This effect was prevented by aspirin (5 mmol/L). ♦ Conclusion Protein expression of the eNOS–sGC system in the peritoneal tissue was downregulated by LPS. High doses of aspirin protected both eNOS protein expression and sGC in human peritoneum. These findings suggest a new mechanism of action of aspirin that could be involved in the prevention of peritoneal dysfunction during inflammation. |
| Databáze: | OpenAIRE |
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