Serum Levels of Monocyte Chemoattractant Protein-1 Correlate with Poor Clinical Grades in Cerebral Aneurysms

Background: Ruptured cerebral aneurysms (ICAs) are the most common non-traumatic cause of subarachnoid hemorrhage (SAH) that is associated with life threatening complications such as Vasospasm, Infarction, and Hydrocephalus (HCP). The active participation of macrophage/monocyte-mediated inflammatory response in the pathogenesis of cerebral aneurysm as labeled with Monocyte ChemoattractantProtein-1 (MCP-1) is suggested. Objective: To measure the serum level of MCP-1 in ruptured CAs in different time intervals. Methods: We measured the serum levels of MCP-1 in SAH patients who had CAs and compared it with that of MCP-1 in two control groups: including patients with SAH without CAs, and the normal population of blood donors. We also measured the MCP-1 levels in patients with CAs one week afterward to evaluate the effect of treatment. Serum level of MCP-1 was measured by a commercial ELISA assay. Results: Mean serum MCP-1 level in patients with SAH and CAs was 188.2168 Pg/ml and 331.3982 Pg/ml in the normal population. There was no statistically significant difference between serum levels of MCP-1 on the first (mean=188.2168 Pg/ml) and 7th days after SAH onset (mean=171.8450 Pg/ml) (p=0.739). Serum level of MCP-1 increased significantly as Glasgow Coma Scale decreased (p=0.078) and Hunt and Hess score increased (p=0.089).Conclusion: Our results did not show an increasing MCP-1 serum level in patients with aneurysmal SAH. There was a relationship between poor clinical grade and MCP-1 levels in patients with CAs. MCP-1 may be a local inflammatory marker for cerebral aneurysms without systemic manifestation.