Assessing Early Erythrolysis and the Relationship to Perihematomal Iron Overload and White Matter Survival in Human Intracerebral Hemorrhage

Overview

Journal CNS Neurosci Ther

Specialties Neurology
Pharmacology

Date 2021 Jun 19

PMID 34145764

Citations 8

Authors

Nemanja Novakovic

Zachary M Wilseck

Thomas L Chenevert

Guohua Xi

Richard F Keep

Aditya S Pandey

Neeraj Chaudhary

Affiliations

Soon will be listed here.

Abstract

Aims: Iron released from lysed red blood cells within the hematoma plays a role in intracerebral hemorrhage (ICH)-related neurotoxicity. This study utilizes magnetic resonance imaging (MRI) to examine the time course, extent of erythrolysis, and its correlation with perihematomal iron accumulation and white matter loss.

Methods: The feasibility of assessing proportional erythrolysis using T2* MRI was examined using pig blood phantoms with specified degrees of erythrolysis. Fifteen prospectively enrolled ICH patients had MRIs (3-Tesla) at days 1-3, 14, and 30 (termed early, subacute, and late periods, respectively). Measurement was performed on T2*, 1/T2*, and fractional anisotropy (FA) maps.

Results: Pig blood phantoms showed a linear relationship between 1/T2* signal and percent erythrolysis. MRI on patients showed an increase in erythrolysis within the hematoma between the early and subacute phases after ICH, almost completing by day 14. Although perihematomal iron overload (IO) correlated with the erythrolysis extent and hematoma volume at days 14 and 30, perihematomal white matter (WM) loss significantly correlated with both, only at day 14.

Conclusion: MRI may reliably assess the portion of the hematoma that lyses over time after ICH. Perihematomal IO and WM loss correlate with both the erythrolysis extent and hematoma volume in the early and subacute periods following ICH.

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