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The effects of short-term use of proton pump inhibitors on plasma and salivary nitrate/nitrite and exhaled NO in patients with established coronary artery disease
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för farmaceutisk biovetenskap.
2013 (Engelska)Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
Abstract [en]

Introduction: Recent studies have suggested several vasoprotective/cardioprotective effects of dietary nitrate (NO3-) and nitrite (NO2-), including blood pressure regulating, antiplatelet effect, enhanced endothelial function and increased oxygen supply in healthy volunteers. There is, on the other hand, concern that an increase in gastric pH may blunt these beneficial effects due to the low pH requirement (pH< 2) for nitric oxide (NO) generation from nitrate in the stomach. This effect has not previously been investigated in 'real life' patients. Aim: To investigate the effects of an increased gastric pH caused by short-term (5 days) use of esomeprazole, a proton pump inhibitor, on plasma and salivary nitrate/nitrite and exhaled NO in patients with established coronary artery disease (CAD). Methods: A total of seven patients with CAD were enrolled in the study. An on-line method was used to determine fractional exhaled concentration of NO (FeNO) at multiple flow rates, data was modeled to estimate alveolar airways NO concentration (Calv) and bronchial NO flux (JNO). Plasma and salivary nitrate/nitrite levels were also analyzed. Results: There was a statistically (P = 0.0469) significant reduction in Calv in the overall patient group after treatment with esomeprazole. There was a trend toward an increase, albeit non-statistically significant (P = 0.0781) in salivary nitrate after treatment with esomeprazole. Conclusion: The major finding in this study is the significant reduction in the alveolar NO concentration in the overall patient group after treatment with esomeprazole. Further research is needed in this area.

Ort, förlag, år, upplaga, sidor
2013. , s. 30
Nationell ämneskategori
Klinisk medicin
Identifikatorer
URN: urn:nbn:se:uu:diva-201729OAI: oai:DiVA.org:uu-201729DiVA, id: diva2:628894
Ämne / kurs
Farmakoterapi
Utbildningsprogram
Apotekarprogrammet
Handledare
Examinatorer
Tillgänglig från: 2014-09-09 Skapad: 2013-06-14 Senast uppdaterad: 2014-09-09Bibliografiskt granskad

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