Objective: To investigate the significance of changes in plasma levels of acute phase proteins (APPs) in patients with sepsis and severe sepsis by serial analysis.
Methods: Plasma contents of C reactive protein (CRP), a1-acid glycoprotein (AAG), ceruloplasmin (CER) and haptoglobin (HP) were determined by quantitative analysis in 29 sepsis and 27 severe sepsis patients on 1, 3, 7, 14 and 21 days using an American made specified protein automatic analyzer IMAGE. The data were compared with those of 30 healthy persons.
Results: In sepsis group. CRP and AAG levels were found to be significantly increased on 1 day (P<0.01 and P<0.05). CRP level peaked on 3 days, while that of AAG peaked on 3 to 7 days. The peak of AAG level maintained for 2 weeks. There were significant differences in levels of CRP and AAG at different time points (both P<0.01). CER level was not increased (P>0.05). HP level increased significantly early (P<0.05), but there was no difference in HP between different time intervals (P>0.05). In severe sepsis group there was very marked increase in CRP and AAG different time intervals (both P<0.01). The high levels maintained for 14 days. There was significant difference in CRP and AAG levels between different time intervals (P<0.01).CER showed a tendency of lowering, and significant difference was found among different time points (P<0.05). HP did not increase significantly before 14 days (P>0.05) followed by a slow increase with significant difference among different time points (P<0.05).A comparison of tendency of changes between groups were significant differences in CRP, AAG and HP (all P<0.05). There was no significant difference in CER (P>0.05).
Conclusion: Early increase in CRP was a sensitive sign for infection. The extended peaking of CRP and AAG levels indicates severe infection. Absence of increase in HP, or a reduction of it suggests also the presence of severe infection. CER is not a sensitive indicator of severity of infection.
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