Objective: Patients with intracerebral hemorrhage (ICH) may elaborate varying degrees of perihematomal edema (PHE), requiring closer monitoring and a higher intensity of treatment. Here, we explore whether the soluble form of CD163, a scavenger receptor responsible for hemoglobin sequestration, can serve as a prognostic biomarker of PHE development and poor outcome after ICH.
Methods: Our study cohort was comprised of 51 primary age- and sex-matched ICH patients with moderate-sized, hypertensive deep hemorrhages. Patients were part of a prospective ICH registry cataloguing admission data along with functional outcomes. We measured sCD163 levels in serial serum and cerebrospinal fluid (CSF) samples obtained at prespecified timepoints. Descriptive statistics, including a generalized estimating equation for longitudinal data, were used to analyze sCD163 in relation to ICH outcomes.
Results: Acute serum sCD163 (<48 h postictus) was significantly elevated in ICH patients compared to both acute neurological event controls ( = <0.001) and healthy controls ( = 0.003). As predicted, acute serum sCD163 levels were significantly associated with both hematoma volume expansion ( = 0.009) and PHE expansion ( = 0.002). Further examination determined that patients with high PHE expansion had poorer modified Rankin Scale scores at discharge ( = 0.024), and circulating sCD163 levels were found to be significantly lower in patients with high-level PHE expansion.
Interpretation: Acute sCD163 levels may be a useful biomarker for the acute identification of patients at risk for hematoma expansion, perihematomal edema expansion and poorer short-term outcomes.
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| http://dx.doi.org/10.1002/acn3.485 | DOI Listing |
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