Effect of total peony glucoside pretreatment on NF-κB and ICAM-1 expression in myocardial tissue of rat with myocardial ischemia-reperfusion injury

Genet Mol Res. 2016 Nov 3;15(4). doi: 10.4238/gmr15048978.

Abstract

Early recovery of myocardial perfusion is beneficial for myocardial ischemia. However, ischemia-reperfusion (I/R) may exacerbate myocardial injury. Research shows that total peony glucoside (TPG) can inhibit ischemic myocardial cell apoptosis. However, whether it can ameliorate I/R injury remains poorly understood. This study explored the effect of TPG pretreatment on I/R, through nuclear factor-kappa B (NF-κB) and intercellular adhesion molecule-1 (ICAM-1) expressions in I/R-affected myocardium. Healthy 7-week-old male Sprague Dawley rats were randomly categorized into sham operation (A), modeling (B), and 100, 200, and 400 mg/kg TPG pretreatment groups (C, D, and E, respectively), with 20 rats in each group. I/R rat models were designed by ligating left anterior descending coronary artery for 30 min to induce ischemia and for 120 min to induce reperfusion. Serum interleukin 6 (IL-6) and interleukin 8 (IL-8) levels were measured using enzyme linked immunosorbent assay. NF-κB and ICAM-1 mRNA and protein expressions were detected through RT-PCR and western blot analysis, respectively. Compared to group A, serum IL-6 and IL-8 levels of group B elevated significantly (P < 0.05), whereas NF-κB and ICAM-1 mRNA and protein expressions increased in the myocardium (P < 0.05). Serum IL-6 and IL-8 levels, and NF-κB and ICAM-1 mRNA and protein expressions, in myocardium of TPG groups reduced in a dose-dependent manner. Therefore, TPG pretreatment could alleviate myocardium reperfusion injury in I/R rat models by reducing NF-κB and ICAM-1 mRNA and protein expressions and cytokine secretions. This mechanism could be associated with the inhibition of NF-κB activation and downregulation of ICAM-1 expression.

MeSH terms

  • Animals
  • Disease Models, Animal
  • Glucosides / pharmacology
  • Glucosides / therapeutic use*
  • Intercellular Adhesion Molecule-1 / genetics*
  • Intercellular Adhesion Molecule-1 / metabolism
  • Interleukin-6 / blood
  • Interleukin-8 / blood
  • Male
  • Myocardial Reperfusion Injury / blood
  • Myocardial Reperfusion Injury / drug therapy*
  • Myocardial Reperfusion Injury / genetics*
  • Myocardial Reperfusion Injury / pathology
  • Myocardium / metabolism*
  • Myocardium / pathology
  • NF-kappa B / genetics*
  • NF-kappa B / metabolism
  • Paeonia / chemistry*
  • RNA, Messenger / genetics
  • RNA, Messenger / metabolism
  • Rats, Sprague-Dawley

Substances

  • Glucosides
  • Interleukin-6
  • Interleukin-8
  • NF-kappa B
  • RNA, Messenger
  • Intercellular Adhesion Molecule-1