Abstract:
OBJECTIVE:Stress hyperglycemia has been associated with increased mortality in patients with myocardial infarction (MI). We examined the association between plasma glucose levels, circulating inflammatory markers, T-cell activation, and functional cardiac outcome in patients with first MI. RESEARCH DESIGN AND METHODS:Echocardiographic parameters, circulating levels of interleukin-18 (IL-18), C-reactive protein (CPR), and the percent of CD16-CD56, CD4/CD8, CD152, and HLA-DR expression were investigated in 108 patients with acute MI on admission to the emergency ward. RESULTS:Our review found that 31 new hyperglycemic patients (glycemia >or=7 mmol/l) had higher infarct segment length (P < 0.05) and myocardial performance index (P < 0.02) and reduced transmitral Doppler flow (P < 0.05), pulmonary flow analysis (P < 0.02), and ejection fraction (P < 0.05) compared with 36 hyperglycemic diabetic patients and 41 normoglycemic patients. Plasma IL-18 and CRP were higher in the hyperglycemic than in the normoglycemic patients (P < 0.005), with the highest values in patients with new hyperglycemia (P < 0.05). Hyperglycemic patients had a higher percent of CD16+/CD56+ cells and CD4/CD8 ratio (P < 0.01), whereas they had lower CD152 expression (which has a negative regulatory function in T-cell activation) compared with normoglycemic patients (P < 0.001). CONCLUSIONS:During MI, hyperglycemia is associated with increased levels of inflammatory markers, enhanced expression of cytotoxic T-cells, and reduced expression of T-cells, which are implicated in limiting the immune process. An increased inflammatory immune process seems a likely mechanism linking acute hyperglycemia to poor cardiac outcome in MI patients.
journal_name
Diabetes Carejournal_title
Diabetes careauthors
Marfella R,Siniscalchi M,Esposito K,Sellitto A,De Fanis U,Romano C,Portoghese M,Siciliano S,Nappo F,Sasso FC,Mininni N,Cacciapuoti F,Lucivero G,Giunta R,Verza M,Giugliano Ddoi
10.2337/diacare.26.11.3129subject
Has Abstractpub_date
2003-11-01 00:00:00pages
3129-35issue
11eissn
0149-5992issn
1935-5548journal_volume
26pub_type
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