Relationship between site of myocardial infarction, left ventricular function and cytokine levels in patients undergoing coronary artery surgery.
BACKGROUND
The purpose of this study was to examine the relationship between left ventricular (LV) function, cytokine levels and site of myocardial infarction (MI) in patients undergoing coronary artery bypass grafting (CABG).


METHODS
Sixty patients undergoing CABG were divided into three groups (n = 20) according to their history of site of myocardial infarction (MI): no previous MI, anterior MI and posterior/inferior MI. In the pre-operative period, detailed analysis of LV function was done by transthoracic echocardiography. The levels of adrenomedullin, interleukin-1-beta, interleukin-6, tumour necrosis factor-alpha (TNF-α) and angiotensin-II in both peripheral blood samples and pericardial fluid were also measured.


RESULTS
Echocardiographic analyses showed that the anterior MI group had significantly worse LV function than both the group with no previous MI and the posterior/inferior MI group (p < 0.05 for LV end-systolic diameter, fractional shortening, LV end-systolic volume, LV end-systolic volume index and ejection fraction). In the anterior MI group, both plasma and pericardial fluid levels of adrenomedullin and and pericardial fluid levels of interleukin-6 and interleukin- 1-beta were significantly higher than those in the group with no previous MI (p < 0.05), and pericardial fluid levels of adrenomedullin, interleukin-6 and interleukin-1-beta were significantly higher than those in the posterior/inferior MI group (p < 0.05).


CONCLUSIONS
The results of this study indicate that (1) patients with an anterior MI had worse LV function than patients with no previous MI and those with a posterior/inferior MI, and (2) cytokine levels in the plasma and pericardial fluid in patients with anterior MI were increased compared to patients with no previous MI.
Department of Cardiovascular Surgery, Medifema Private Hospital, Izmir, Turkey. Email: kirisilker@yahoo.com.
Ilker
I
Kiris
Department of Cardiovascular Surgery, Medical Park Antalya Hospital, Antalya, Turkey.
Sahin
S
Kapan
Department of Cardiovascular Surgery, Egepol Private Hospital, Izmir, Turkey.
Cuneyt
C
Narin
Department of Cardiology, Suleyman Demirel University Medical School, Isparta, Turkey.
Mehmet
M
Ozaydın
Department of Biochemistry, Recep Tayyip Erdogan University Medical School, Rize, Turkey.
Medine Cumhur
MC
Cure
Department of Biochemistry, Ataturk Education and Research Hospital, Katip Celebi University, Izmir, Turkey.
Recep
R
Sutcu
Department of Cardiovascular Surgery, Medical Park Antalya Hospital, Antalya, Turkey.
Huseyin
H
Okutan
D053607:Adrenomedullin / Q000378:metabolism; D000368:Aged; D000804:Angiotensin II / Q000378:metabolism; D056988:Anterior Wall Myocardial Infarction / Q000000981:diagnostic imaging / Q000378:metabolism / Q000503:physiopathology / Q000601:surgery*; D015415:Biomarkers / Q000378:metabolism; D001026:Coronary Artery Bypass; D016207:Cytokines / Q000378:metabolism*; D004452:Echocardiography; D005260:Female; D006801:Humans; D056989:Inferior Wall Myocardial Infarction / Q000000981:diagnostic imaging / Q000378:metabolism / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009206:Myocardium / Q000378:metabolism* / Q000473:pathology; D000069236:Pericardial Fluid / Q000378:metabolism*; D016896:Treatment Outcome; D016277:Ventricular Function, Left
C507862:ADM protein, human; D015415:Biomarkers; D016207:Cytokines; D000804:Angiotensin II; D053607:Adrenomedullin