Papillary Muscle Action Potential Alterations After Abdominal Ischemia-Reperfusion
Yıl 2020,
Cilt: 42 Sayı: 1, 48 - 53, 01.01.2020
Seckin Tuncer
,
Ahmet Akkoca
,
Murat Cenk Çelen
,
Nizamettin Dalkilic
Öz
Abdominal aortic aneurysm (AAA) has a high prevalence and
surgical treatment is still the best option for many reasons. Surgical
treatment needs abdominal blood flow to be discontinued, which leads to
secondary complications caused by ischemia-reperfusion (I/R) in different
organs. Since distant organ damages are seen after surgery, abdominal ischemia
reperfusion results in post-treatment deaths especially due to heart based
problems. In this study, we aimed to investigate the possible alterations in
action potential parameters of papillary muscle after abdominal I/R injury. Adult
Wistar-Albino rats were divided into two groups randomly: SHAM group (only
laparotomy was performed) and I/R group (abdominal aorta was clamped for 1 hour
and reperfused for 2 hours). After the operational period, left ventricle
papillary muscles were isolated and action potential (AP) recording experiments
were carried out in-vitro. Significant hyperpolarization was seen in resting
membrane potential in I/R group. There was no alteration in the general shape
of the action potential after I/R. Some delayed-after-depolarizations were
recorded, that suggests an impaired persistent Na+ channel activity
when interpreted with resting membrane potential findings. This study shows that I/R does not affect the AP
parameters except for resting membrane potential. However,
it is also likely that the sodium-calcium exchanger (NCX) causes delayed
arrhythmias after depolarization due to dysfunction of unknown causes.
Kaynakça
- 1. Madu EC, D'Cruz IA. The vital role of papillary muscles in mitral and ventricular function: echocardiographic insights. Clin Cardiol. 1997;20(2):93-8.
- 2. BAUE AE, MCCLERKIN WW. A STUDY OF SHOCK: ACIDOSIS AND THE DECLAMPING PHENOMENON. Ann Surg. 1965;161:41-5.
- 3. Sakalihasan N, Limet R, Defawe OD. Abdominal aortic aneurysm. Lancet. 2005;365(9470):1577-89.
- 4. Katzen BT, MacLean AA. Complications of endovascular repair of abdominal aortic aneurysms: a review. Cardiovasc Intervent Radiol. 2006;29(6):935-46.
- 5. Tuncer S, Dalkilic N, Burat I. Electrophysiological alterations in diaphragm muscle caused by abdominal ischemia-reperfusion. Respir Physiol Neurobiol. 2017;238:7-13.
- 6. Chandra V, Trang K, Virgin-Downey W, Dalman RL, Mell MW. Long-term outcomes after repair of symptomatic abdominal aortic aneurysms. J Vasc Surg. 2018;68(5):1360-6.
- 7. McLaughlin R, Bowler D, Kelly CJ, Kay E, Bouchier-Hayes D. Taurine protects against early and late skeletal muscle dysfunction secondary to ischaemia reperfusion injury. Eur J Surg. 2000;166(5):375-9.
- 8. Moneley D, Barry MC, McLaughlin R, Kelly CJ, Bouchier Hayes DJ. Preoperative treatment with recombinant human growth hormone prevents ischemia reperfusion-induced diaphragmatic dysfunction. J Surg Res. 2001;97(1):81-4.
- 9. Lau LL, Halliday MI, Lee B, Hannon RJ, Gardiner KR, Soong CV. Intestinal manipulation during elective aortic aneurysm surgery leads to portal endotoxaemia and mucosal barrier dysfunction. Eur J Vasc Endovasc Surg. 2000;19(6):619-24.
- 10. Kukic BP, Savic NB, Stevanovic KS, Trailovic RDj, Cvetkovic SD, Davidovic LB. Effect of IgM-Enriched Immunoglobulin as Adjunctive Therapy in a Patient Following Sepsis After Open Thoracoabdominal Aortic Aneurysm Repair. J Cardiothorac Vasc Anesth. 2016;30(3):746-8.
- 11. Baczkó I, Giles WR, Light PE. Resting membrane potential regulates Na(+)-Ca2+ exchange-mediated Ca2+ overload during hypoxia-reoxygenation in rat ventricular myocytes. J Physiol. 2003;550(Pt 3):889-98.
- 12. Kavak S. Effects of insulin on altered mechanical and electrical papillary muscle activities of diabetic rats. J Membr Biol. 2013;246(1):31-7.
- 13. Yaras N, Sariahmetoglu M, Bilginoglu A, Aydemir-Koksoy A, Onay-Besikci A, Turan B, et al. Protective action of doxycycline against diabetic cardiomyopathy in rats. Br J Pharmacol. 2008;155(8):1174-84.
Abdominal İskemi-Reperfüzyon Sonrası Papiller Kas Aksiyoon Potansiyelinde Meydana Gelen Değişiklikler
Yıl 2020,
Cilt: 42 Sayı: 1, 48 - 53, 01.01.2020
Seckin Tuncer
,
Ahmet Akkoca
,
Murat Cenk Çelen
,
Nizamettin Dalkilic
Öz
Abdominal aort anevrizması (AAA) yüksek
prevalansa sahiptir ve cerrahi tedavi hala birçok nedenden ötürü en iyi seçenek
olarak görülmektedir. Cerrahi tedavi abdominal kan akımının bir süreliğine kesilmesine
neden olmakta ve iskemi-reperfüzyon (I/R) olarak adlandırılan bu durum farklı
organlarda hasar meydana getirerek sekonder komplikasyonlara yol açmaktadır. Post-operatif
komplikasyonlar arasında kardiyak olanlar en yüksek morbiditeye sahiptir. Bu
çalışmada, abdominal I/R sonrası kalp yeterliliği bakımından en önemli role
sahip papiller kasa ait aksiyon potansiyelinde meydana gelebilecek değişikliklerin
araştırılması amaçlanmıştır. Yetişkin Wistar-Albino sıçanlardan abdominal aortu
1 saat süreyle klemplenip ve 2 saat süreyle reperfüzyon gerçekleştirilenler
I/R, yalnızca laparotomi yapılanlar ise SHAM grubu olarak adlandırılmıştır.
Reperfüzyon periyodunun hemen ardından sol ventrikül papiller kasları izole
edilmiş ve aksiyon potansiyeli kayıtları yapılmıştır. Dinlenim zar
potansiyelinin I/R grubunda anlamlı ölçüde hiperpolarize olduğu görülürken, aksiyon
potansiyelinin genel görünümünde ise herhangi bir değişiklik meydana gelmemiştir.
Kayıtlarda görülen gecikmiş-depolarizasyonlar, dinlenim zar potansiyeli bulguları
ile yorumlandığında, Na+ kanal aktivitesindeki kalıcı bir değişimi düşündürmektedir.
Sonuç olarak, bu çalışma I/R ile papiller kas hücre zarında hiperpolarizasyon
meydana geldiğini fakat aksiyon potansiyeli parametrelerinde anlamlı bir
değişikliğin olmadığını göstermiştir. Gözlenen gecikmiş aritmilerin sodyum-kalsiyum
değiş-tokuşcusunun (NCX) disfonksiyonu sebebiyle ortaya çıkmış olabileceğini
düşündürmektedir.
Kaynakça
- 1. Madu EC, D'Cruz IA. The vital role of papillary muscles in mitral and ventricular function: echocardiographic insights. Clin Cardiol. 1997;20(2):93-8.
- 2. BAUE AE, MCCLERKIN WW. A STUDY OF SHOCK: ACIDOSIS AND THE DECLAMPING PHENOMENON. Ann Surg. 1965;161:41-5.
- 3. Sakalihasan N, Limet R, Defawe OD. Abdominal aortic aneurysm. Lancet. 2005;365(9470):1577-89.
- 4. Katzen BT, MacLean AA. Complications of endovascular repair of abdominal aortic aneurysms: a review. Cardiovasc Intervent Radiol. 2006;29(6):935-46.
- 5. Tuncer S, Dalkilic N, Burat I. Electrophysiological alterations in diaphragm muscle caused by abdominal ischemia-reperfusion. Respir Physiol Neurobiol. 2017;238:7-13.
- 6. Chandra V, Trang K, Virgin-Downey W, Dalman RL, Mell MW. Long-term outcomes after repair of symptomatic abdominal aortic aneurysms. J Vasc Surg. 2018;68(5):1360-6.
- 7. McLaughlin R, Bowler D, Kelly CJ, Kay E, Bouchier-Hayes D. Taurine protects against early and late skeletal muscle dysfunction secondary to ischaemia reperfusion injury. Eur J Surg. 2000;166(5):375-9.
- 8. Moneley D, Barry MC, McLaughlin R, Kelly CJ, Bouchier Hayes DJ. Preoperative treatment with recombinant human growth hormone prevents ischemia reperfusion-induced diaphragmatic dysfunction. J Surg Res. 2001;97(1):81-4.
- 9. Lau LL, Halliday MI, Lee B, Hannon RJ, Gardiner KR, Soong CV. Intestinal manipulation during elective aortic aneurysm surgery leads to portal endotoxaemia and mucosal barrier dysfunction. Eur J Vasc Endovasc Surg. 2000;19(6):619-24.
- 10. Kukic BP, Savic NB, Stevanovic KS, Trailovic RDj, Cvetkovic SD, Davidovic LB. Effect of IgM-Enriched Immunoglobulin as Adjunctive Therapy in a Patient Following Sepsis After Open Thoracoabdominal Aortic Aneurysm Repair. J Cardiothorac Vasc Anesth. 2016;30(3):746-8.
- 11. Baczkó I, Giles WR, Light PE. Resting membrane potential regulates Na(+)-Ca2+ exchange-mediated Ca2+ overload during hypoxia-reoxygenation in rat ventricular myocytes. J Physiol. 2003;550(Pt 3):889-98.
- 12. Kavak S. Effects of insulin on altered mechanical and electrical papillary muscle activities of diabetic rats. J Membr Biol. 2013;246(1):31-7.
- 13. Yaras N, Sariahmetoglu M, Bilginoglu A, Aydemir-Koksoy A, Onay-Besikci A, Turan B, et al. Protective action of doxycycline against diabetic cardiomyopathy in rats. Br J Pharmacol. 2008;155(8):1174-84.