Serum Concentration of lgG in Patient With Acute Coronary Syndrome

Immunoglobin G (IgG), a highly abundant glycoprotein in serum, is known to participate in blood immune responses.It has been an increasing interest in the analysis of the abnormal glycosylation of human lgG in healthy and disease states, such as autoimmune diseases and cancer.However, there is few relevant studies about the changes in glycopeptides of serum immunoglobulin G in patients with acute myocardial infarction. This study was performed for the frst timeto assess the quantitative changes of serum IgG glycosylation in patients with acute myocardial infarction and the relationships between its change and prognosis.

Inclusion criteria

• diagnosed as STEMI.

• with left ventricular ejection fraction（LVEF）>=45%
• written informed consents are obtained
• admitted within 24 hours after chest pain attacked

Exclusion criteria

• complicated with rheumatic heart disease, coronary arteritis, hypertrophic cardiomyopathy or dilated cardiomyopathy

• complicated with malignant tumor,the immune system diseases, blood system diseases, recently (within 2 weeks) taking glucocorticoid drugs, the use of immunosuppressive agents and cerebral infarction
• with acute or chronic infection, surgery or trauma in the last month
• secondary hypertension, severe liver dysfunction,severe renal insufficiency
• with abnormal thyroid function or allergy to iodine agent refusal to sign the informed consent