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- Title
Hemodynamic effects of atrial natriuretic peptide in ischemia-reperfusion injury that occurs after exercise.
- Authors
VARDAR, Selma Arzu; PALABIYIK, Orkide; TOPUZ, Ruhan Deniz; GÜREL, Elif Ezgi; ÇALIŞKAN, Semra; ÖZEN, Serap TOPÇU; SÜT, Necdet; KARADAĞ, Çetin Hakan
- Abstract
Background/aim: Atrial natriuretic peptide (ANP) is known as a protective agent against ischemia-reperfusion injury for cardiomyocytes. We compared the hemodynamic effects of ANP and isatin, which is known as an ANP receptor blocker, in ischemia followed by reperfusion in exercised rat hearts with nonexercised ones. Materials and methods: Isolated hearts were perfused in 4 exercised (E) groups after a running protocol for 5 days and 4 nonexercised (NE) groups. In the first protocol, ANP was added to the perfusion solution before ischemia in an E and NE group. In the second protocol, different doses of isatin (0.1, 10, 100 µM/L) were added to the perfusion solution before ANP in 3 E and 3 NE groups. Left ventricular developed pressure (LVDP) and maximum and minimum rates of change in left ventricular pressure (dP/dtmax and dP/ dtmin) were recorded. Results: Higher LVDP and dP/dtmin values were observed in the E group than the NE group following addition of ANP before ischemia. Values of dP/dtmax were higher in the E group at the first minute of reperfusion period. Hemodynamic difference was not observed between groups given the same amount of isatin before ANP. Conclusion: This study indicated that higher ANP concentrations before ischemia were more effective on the left ventricle contractility and relaxation functions in the hearts that were exposed to exercise.
- Subjects
HEMODYNAMICS; NATRIURETIC peptides; ISCHEMIA; REPERFUSION injury; LEFT ventricular hypertrophy
- Publication
Turkish Journal of Medical Sciences, 2015, Vol 45, Issue 2, p298
- ISSN
1300-0144
- Publication type
Article
- DOI
10.3906/sag-1307-42