Serum complement (C3, C4) levels in patients with acute myocardial infarction and angina pectoris
Keywords:angina pectoris, myocardial infarction
Serum complement (C3, C4) levels in Libyan patients with acute myocardial infarction (AMI; 31 patients) and angina pectoris (AP; 11 patients) at the 1st day and 7th day of attack were estimated. A group of 26 healthy Libyans were taken as control subjects (CS). Serum C3 and C4 levels (mean Â± SD, mg/dl) were elevated at the 1st day in AMI as well as AP patients (C3 â AMI1: 154.0 Â± 28.5, AP1: 152.0 Â± 45.0, CS: 132.0 Â± 8.0, ANOVA: p=0.0072; C4â AMI1: 38 Â± 13, AP1: 37 Â± 17, CS: 29 Â± 6, ANOVA: p=0.0160). No significant differences for the elevated C3 and C4 levels at the 1st day were observed between the two diseases groups (AMI1 vs AP1 â C3: p=0.879, C4: p=0.818). At the 7th day, C3 and C4 levels were further elevated in AMI, while they remained at the similar elevated levels in AP (C3 â AMI 7: 173.1 Â± 28.0, AP 7: 149.0 Â± 41.0, CS: 132.0 Â± 8.0, ANOVA: p=0.0000; C4 â AMI 7: 46.0 Â± 7.0, AP 7: 36.0 Â± 15.0, CS: 29.0 Â± 6.0, ANOVA: p=0.0000). Again, no significance differences for the raised C3 and C4 levels at the 7th day was observed between AMI and AP patients (AMI 7 vs AP 7 â C3: P=0.059, C4: p=0.06). The C3 elevation showed significant positive correlation in AMI group (r=0.522, p=0.003) while it was insignificant in AP patients (r=0.037, p=0.915). Regarding C4 levels, it was significantly correlated in AMI (r=0.483, p=0.006), and in AP, although it was positively correlated (r=0.656, P=0.028) the observed difference was not significant (t=0.29, p=0.778). In conclusion, serum C3 and C4 levels were more profoundly elevated in AMI compared to AP patients suggestive of an acute phase and inflammatory response.
DOI = 10.3329/bmrcb.v33i3.1141
Bangladesh Med Res Counc Bull 2007; 33: 98-102
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