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Journal Article
Research Support, Non-U.S. Gov't
Review
Haematoma scavenging in intracerebral haemorrhage: from mechanisms to the clinic.
Journal of Cellular and Molecular Medicine 2018 Februrary
The products of erythrocyte lyses, haemoglobin (Hb) and haem, are recognized as neurotoxins and the main contributors to delayed cerebral oedema and tissue damage after intracerebral haemorrhage (ICH). Finding a means to efficiently promote absorption of the haemolytic products (Hb and haem) around the bleeding area in the brain through stimulating the function of the body's own garbage cleaning system is a novel clinical challenge and critical for functional recovery after ICH. In this review, available information of the brain injury mechanisms underlying ICH and endogenous haematoma scavenging system is provided. Meanwhile, potential intervention strategies are discussed. Intracerebral blood itself has 'toxic' effects beyond its volume effect after ICH. Haptoglobin-Hb-CD163 as well as haemopexin-haem-LRP1 is believed to be the most important endogenous scavenging pathway which participates in blood components resolution following ICH. PPARγ-Nrf2 activates the aforementioned clearance pathway and then accelerates haematoma clearance. Meanwhile, the scavenger receptors as novel targets for therapeutic interventions to treat ICH are also highlighted.
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