Origin of Clinically Significant Acute Phase Reaction in Acute Coronary Syndromes: Myocardial Necrosis or Plaque Rupture?
1Department of Emergency Medicine Akdeniz University, Medical Faculty, Antalya, Turkey
2Department of Cardiology Akdeniz University, Medical Faculty, Antalya, Turkey
J Clin Pract Res 2008; 30(3): 163-169
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Abstract

Purpose: This study was aimed to investigate the hypothesis that clinically significant C- reactive protein releases in acute coronary syndromes (ACS) occur secondary to myocardial necrosis in response to interleukin-6.
Materials and Methods: This prospectie randomized clinical study was conducted between March 2005 and May 2005 in an emergency department of a tertiary care hospital. Patients with typical chest pain were enrolled into the study. Initial cardiac Troponin-T, interleukin-6 (IL-6) and high sensitive CRP (hsCRP) levels were measured. IL-6 and hsCRP levels were compared between patients with or without myocardial infarction.
Results: A total of 132 patients were enrolled to the study. Finally 15 (11.5%) patients were diagnosed as stable angina pectoris, 60 (46.2%) were unstable angina pectoris, 18 (13.8%) were non-ST segment elevation MI and 37 (28.5%) patients were ST segment elevation MI. hsCRP levels (81.8% vs 59.1%, p=0.047) and IL-6 (54.5% vs 30.1%, respectively; p=0.03) levels were significantly higher in patients with myocardial necrosis. A moderate correlation was also found between the levels of hsCRP and IL-6 (r=0.556).
Conclusion: High sensitivity CRP levels can increase both in plaque rupture and myocardial necrosis. ACS is associated with greater inflammation in the presence of myocardial necrosis than in cases of angina without necrosis.


Akut Koroner Sendromlardaki Klinik Olarak Anlamlı Akut Faz Reaksiyonun Kaynağı: Miyokardiyal Nekroz mu, Plak Rüptürü mü?
1Department of Emergency Medicine Akdeniz University, Medical Faculty, Antalya, Turkey
2Department of Cardiology Akdeniz University, Medical Faculty, Antalya, Turkey
Journal of Clinical Practice and Research 2008; 3(30): 163-169

Amaç: Bu çalışmada, akut koroner sendromlarda (AKS) meydana gelen klinik olarak anlamlı C-reaktif protein (CRP) artışının, myokardiyal nekroza bağlı olarak salınan İnterlökin-6.ya (IL- 6) cevaben meydana geldiği hipotezini araştırmaktır.
Gereç ve Yöntem: Bu ileriye döndük randomize çalışma, bir üniversite hastanesi acil servisinde Mart 2005 ve Mayıs 2005 tarihleri arasında yapıldı. Acil servise tipik göğüs ağrısı ile başvuran hastalar çalışmaya alındı. Hastalardan başlangıç kardiyak Troponin-T, IL-6 ve yüksek duyarlıklı CRP (hsCRP) düzeyleri çalışıldı. Miyokardiyal nekrozu olan ve olmayan hastalar arsındaki IL- 6 ve CRP düzeyleri karşılaştırıldı.
Bulgular: Çalışmaya 132 olgu alındı. 15 (%11,5) olguya kararlı anjina pektoris, 60 (%46,2) olguya kararsız anjina pektoris, 18 (%13,8) olguya ST segment yüksekliği olmayan miyokard infarktüsü ve 37 (%28,5) olguya da ST segment yüksekliği olan miyokard infarktüsü tanısı koyuldu. hsCRP (%81,8 vs %59,1; p=0,047) ve IL-6 (%54,5 vs %30,1; p=0,03) düzeyleri miyokardiyal nekrozu olan grupta istatistiksel olarak anlamlı biçimde yüksek bulundu. CRP ile IL-6 arasında orta düzeyde bir korelasyon belirlendi (r=0,556).
Sonuç: Yüksek duyarlılıklı CRP düzeyleri hem miyokardiyal nekrozda hem de plak rüptüründe artabilir. Akut koroner sendromlarda miyokardiyal nekroz varlığında daha fazla inflamasyon cevabı meydana gelir.