Journals / Genel Tıp Dergisi / 2015 / Cilt: 25 - Sayı: 2

The role of exercise on the hemodynamic alterations which was occur following infusion of atrial natriuretic peptid after ischemia in isolated perfused rat heart

Atriyal natriüretik peptid infüzyonunun izole sıçan kalbinde iskemi sonrası oluşturduğu hemodinamik değişikliklerde egzersizin rolü

Pages
40–45
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Short duration and intense exercise may not affect the alterations occurred at cardiac contractility resulted from ANP application in reperfusion period

📌 3 Key Takeaways

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Objective & Hypothesis:The effect of atrial natriuretic peptide (ANP) infusion on left ventricle hemodynamic responses following low flow isch- emia and the role of exercise in this effect were investigated in this study.
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Key Findings & Data:Material and methods: All rats were applied low flow ischemia during 60 minutes and reperfusion during 120 minutes.
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Conclusion & Impact:Conclusion: Short duration and intense exercise may not affect the alterations occurred at cardiac contractility resulted from ANP application in reperfusion period
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The effect of atrial natriuretic peptide (ANP) infusion on left ventricle hemodynamic responses following low flow isch- emia and the role of exercise in this effect were investigated in this study. Material and methods: All rats were applied low flow ischemia during 60 minutes and reperfusion during 120 minutes. Ischemia and reperfusion were applied for Exercise (E) groups throughout five consecutive days following Walking exercise. Two groups which were applied 0.1 ?M/L ANP at the first 15 minutes of exercise constituted ANP (n=6) and Exercise-ANP (n=6) groups. Left ventricle developed pressure (LVDP), maximum-minimum rates of change in left ventricular pressure (+dP/dtmax and -dP/dt) were recorded in all groups. Results: When SVGB, +dp/dt, -dp/ dt and heart rate values of LVDP, dP/dtmax and dP/dtmin were compared before ischemia and after at 1st, 60th and 120th minutes of reperfusion a statistically significant difference was not observed among groups. Similarly, when percent values of infarct areas were compared a statistically significant difference was not found among four groups. Conclusion: Short duration and intense exercise may not affect the alterations occurred at cardiac contractility resulted from ANP application in reperfusion period

Özet

Bu çalışmada düşük akımlı iskemi sonrası reperfüzyon döneminde atriyal natriüretik peptid (ANP) uygulamasının sol ventrikül hemodinamik yanıtlarına etkisi ve bu etkide egzersizin rolü araştırıldı. Gereç ve yöntem: Çalışmada yer alan tüm sıçanlara 60 dakika düşük akımlı iskemi ve takiben 120 dk reperfüzyon uygulandı. Egzersiz (E) gruplarına ardışık olarak beş gün süreyle yürüyüş egzersizini takiben iskemi ve reperfüzyon uygulandı. Reperfüzyonun ilk 15 dakikasında 0.1 ?M/L ANP infüzyonu yapılan iki grup; ANP (n=6) ve Egzersiz-ANP (n=6) gruplarını oluşturdu. Tüm gruplarda sol ventrikül gelişim basıncı (SVGB), maksimum ve minimum sol ventrikül basınç değişim oranları (+dP/dt and -dP/dt) kaydedildi. Bulgular: Kontrol (K), E, ANP ve E-ANP gruplarının SVGB, +dp/dt, -dp/dt ve kalp hızı değerleri iskemi öncesinde ve iskemi sonrası reperfüzyonun 1, 60 ve 120. dakikalarında karşılaştırıldığında gruplar arasında istatistiksel olarak anlamlı bir farklılık göstermedi. Benzer şekilde infarkt alanlarının yüzde değerleri karşılaştırıldığında dört grup arasında istatistiksel olarak anlamlı farklılık bulunmadı. Sonuç: Kısa süreli yoğun egzersiz, reperfüzyon döneminde ANP uygulamasına bağlı kardiyak kontraktilitede oluşan değişimleri etkilememektedir

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Cite This Article

VARDAR, S. A., PALABIYIK, O., YALTA, T., ÖZEN, S. T., GUKSU, Z., TOPUZ, R. D., KARADAĞ, Ç. H. (2015). The role of exercise on the hemodynamic alterations which was occur following infusion of atrial natriuretic peptid after ischemia in isolated perfused rat heart. Genel Tıp Dergisi, Cilt: 25 - Sayı: 2, 40–45. https://ajindex.com/articles/224843

References (10)

  1. Baxter GF. Natriuretic peptides and myocardial ischaemia. Basic Res Cardiol 2004;99:90-3.
  2. D'Souza SP, Davis M, Baxter GF. Autocrine and paracrine actions of natriuretic peptides in the heart. Pharmacol Ther 2004;101:113- 9. Garcia-Dorado D1, Agulló L, Sartorio CL, et al. Myocardial pro- tection against reperfusion injury: the cGMP pathway. Thromb Haemost 2009;101:635-42.
  3. Lai CP, Egashira K, Tashiro H et al. Beneficial effects of atrial nat- riuretic peptide on exercise-induced myocardial ischemia in pa- tients with stable effort angina pectoris. Circulation 1993;87:144- 51. Burley DS, Hamid SA, Baxter GF. Cardioprotective actions of peptide hormones in myocardial ischemia. Heart Fail Rev 2007;12:279-91.
  4. Karakuşoğlu Ö, Vardar SA, Kunduracılar H et al. Effects of short duration supramaximal exercise on plasma atrial natriuretic pep- tide concentrations in healthy subjects. Turkiye Klinikleri J Sports Sci 2010; 2:1-6.
  5. Mandroukas K, Zakas A, Aggelopoulou N et al. Atrial natriuretic factor responses to submaximal and maximal exercise. Br J Sports Med 1995;29:248-51.
  6. Date H, Imamura T, Onitsuka H et al: Differential increase in natriuretic peptides in elite dynamic and static athletes. Circ J. 2003;67:691-6.
  7. Vardar SA, Aktoz M, Karakuşoğlu Ö. The alteration of plasma at- rial natriuretic peptide levels ınduced by postural changes in arc- hery athletes. Balkan Medical Journal 2010;27:275-80. Opie LH. Ventricular function. Heart physiology from cell to circulation. 3th ed. Philadelphia: Lippincott Williams & Wilkins, 1998:343-89.
  8. Dickson EW, Hogrefe CP, Ludwig PS, et all. Exercise enhances myocardial ischemic tolerance via an opioid receptor-dependent mechanism. Am J Physiol Heart Circ Physiol 2008;294:H402-8. Sahna E, Acet A, Ozer MK et al. Myocardial ischemia-reperfusi- on in rats: reduction of infarct size by either supplemental phy- siological or pharmacological doses of melatonin. J Pineal Res 2002;33:234-38.
  9. Brown DA, Lynch JM, Armstrong CJ et al. Susceptibility of the heart to ischaemia-reperfusion injury and exercise-induced cardi- oprotection are sex-dependent in the rat. J Physiol 2005;564:619- 30. Demirel HA, Powers SK, Zergeroglu MA et al. Short-term exercise improves myocardial tolerance to in vivo ischemia-reperfusion in the rat. J Appl Physiol 2001;91:2205-12.
  10. Bowles DK, Farrar RP, Starnes JW. Exercise training improves car- diac function after ischemia in the isolated, working rat heart. Am J Physiol 1992;263:H804-09. Bowles DK, Starnes JW. Exercis