» Articles » PMID: 27325083

Discrepancy in Calcium Release from the Sarcoplasmic Reticulum and Intracellular Acidic Stores for the Protection of the Heart Against Ischemia/reperfusion Injury

Overview
Specialties Biochemistry
Physiology
Date 2016 Jun 22
PMID 27325083
Citations 10
Authors
Affiliations
Soon will be listed here.
Abstract

We and others have demonstrated a protective effect of pacing postconditioning (PPC) against ischemia/reperfusion (I/R) injury. However, the mechanisms underlying this protection are not completely clear. In the present study, we evaluated the effects of calcium release from the sarcoplasmic reticulum (SR) and the novel intracellular acidic stores (AS). Isolated rat hearts (n = 6 per group) were subjected to coronary occlusion followed by reperfusion using a modified Langendorff system. Cardiac hemodynamics and contractility were assessed using a data acquisition program, and cardiac injury was evaluated by creatine kinase (CK) and lactate dehydrogenase (LDH) levels. Hearts were subjected to 30 min of regional ischemia, produced by ligation of the left anterior descending (LAD) coronary artery, followed by 30 min of reperfusion. The hearts were also subjected to PPC (3 cycles of 30 s of left ventricle (LV) pacing alternated with 30 s of right atrium (RA) pacing) and/or were treated during reperfusion with agonists or antagonists of release of calcium from SR or AS. PPC significantly (P < 0.05) normalized LV, contractility, and coronary vascular dynamics and significantly (P < 0.001) decreased heart enzyme levels compared to the control treatments. The blockade of SR calcium release resulted in a significant (P < 0.01) recovery in LV function and contractility and a significant reduction in CK and LDH levels (P < 0.01) when applied alone or in combination with PPC. Interestingly, the release of calcium from AS alone or in combination with PPC significantly improved LV function and contractility (P < 0.05) and significantly decreased the CK and LDH levels (P < 0.01) compared to the control treatments. An additive effect was produced when agonism of calcium release from AS or blockade of calcium release from the SR was combined with PPC. Calcium release from AS and blockade of calcium release from the SR protect the heart against I/R. Combining calcium release from acidic stores or blockade of calcium release from the SR with PPC produced a synergistic protective effect.

Citing Articles

Calcium signaling from sarcoplasmic reticulum and mitochondria contact sites in acute myocardial infarction.

Agyapong E, Pedriali G, Ramaccini D, Bouhamida E, Tremoli E, Giorgi C J Transl Med. 2024; 22(1):552.

PMID: 38853272 PMC: 11162575. DOI: 10.1186/s12967-024-05240-5.


Effect of GLP-1 Receptor Agonist on Ischemia Reperfusion Injury in Rats with Metabolic Syndrome.

Ravic M, Srejovic I, Novakovic J, Andjic M, Sretenovic J, Muric M Pharmaceuticals (Basel). 2024; 17(4).

PMID: 38675485 PMC: 11053642. DOI: 10.3390/ph17040525.


Renin-Angiotensin System Antagonism Protects the Diabetic Heart from Ischemia/Reperfusion Injury in Variable Hyperglycemia Duration Settings by a Glucose Transporter Type 4-Mediated Pathway.

Al-Kouh A, Babiker F, Al-Bader M Pharmaceuticals (Basel). 2023; 16(2).

PMID: 37259385 PMC: 9967344. DOI: 10.3390/ph16020238.


Effects of Apocynin, a NADPH Oxidase Inhibitor, in the Protection of the Heart from Ischemia/Reperfusion Injury.

Mohammad A, Babiker F, Al-Bader M Pharmaceuticals (Basel). 2023; 16(4).

PMID: 37111249 PMC: 10141704. DOI: 10.3390/ph16040492.


Mitigating Cardiotoxicity of Dendrimers: Angiotensin-(1-7) via Its Mas Receptor Ameliorates PAMAM-Induced Cardiac Dysfunction in the Isolated Mammalian Heart.

Akhtar S, Babiker F, Akhtar U, Benter I Pharmaceutics. 2022; 14(12).

PMID: 36559167 PMC: 9781033. DOI: 10.3390/pharmaceutics14122673.


References
1.
Dong S, Teng Z, Lu F, Zhao Y, Li H, Ren H . Post-conditioning protects cardiomyocytes from apoptosis via PKC(epsilon)-interacting with calcium-sensing receptors to inhibit endo(sarco)plasmic reticulum-mitochondria crosstalk. Mol Cell Biochem. 2010; 341(1-2):195-206. DOI: 10.1007/s11010-010-0450-5. View

2.
Ferdinandy P, Schulz R, Baxter G . Interaction of cardiovascular risk factors with myocardial ischemia/reperfusion injury, preconditioning, and postconditioning. Pharmacol Rev. 2007; 59(4):418-58. DOI: 10.1124/pr.107.06002. View

3.
Smani T, Calderon-Sanchez E, Gomez-Hurtado N, Fernandez-Velasco M, Cachofeiro V, Lahera V . Mechanisms underlying the activation of L-type calcium channels by urocortin in rat ventricular myocytes. Cardiovasc Res. 2010; 87(3):459-66. DOI: 10.1093/cvr/cvq063. View

4.
Genazzani A, Billington R . NAADP: an atypical Ca2+-release messenger?. Trends Pharmacol Sci. 2002; 23(4):165-7. DOI: 10.1016/s0165-6147(00)01990-8. View

5.
Yetgin T, Magro M, Manintveld O, Nauta S, Cheng J, den Uil C . Impact of multiple balloon inflations during primary percutaneous coronary intervention on infarct size and long-term clinical outcomes in ST-segment elevation myocardial infarction: real-world postconditioning. Basic Res Cardiol. 2014; 109(2):403. PMC: 3951883. DOI: 10.1007/s00395-014-0403-3. View