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the claim
Macrophages phagocytose and clear extravasated blood cells after internal bleeding.
the verdict
SUPPORTED
the evidence backs this
Recorded sources
10 sources for · 0 against
Is it true that macrophages phagocytose and clear extravasated blood cells after internal bleeding?
Yes. Multiple experimental and review studies confirm that macrophages and microglia actively phagocytose and clear extravasated blood cells following internal bleeding events such as intracerebral hemorrhage.
Verdict: SUPPORTED · 10 sources for, 0 against · Last checked
The analysis
The retrieved papers consistently demonstrate across multiple models (intracerebral hemorrhage, stroke, and cardiovascular pathologies) that macrophages and microglia perform erythrophagocytosis and efferocytosis to clear extravasated blood cells and hematomas. There are no papers refuting this well-established biological function.
Evidence for · 10
Bexarotene treatment enhances macrophage erythrophagocytosis and hematoma clearance in experimental intracerebral hemorrhage models.
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Chang, C., Massey, J., Osherov, A., Costa, L. H. A. d., & Sansing, L. H. (2020). Bexarotene Enhances Macrophage Erythrophagocytosis and Hematoma Clearance in Experimental Intracerebral Hemorrhage. doi.org. https://doi.org/10.1161/strokeaha.119.027037
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More for · 9
Macrophages internalize apoptotic cells, a process analogous to cellular clearance during tissue remodeling and internal bleeding.
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Odaka, C., Mizuochi, T., Yang, J., & Ding, A. (2003). Murine Macrophages Produce Secretory Leukocyte Protease Inhibitor During Clearance of Apoptotic Cells: Implications for Resolution of the Inflammatory Response. doi.org. https://doi.org/10.4049/jimmunol.171.3.1507
Efferocytosis describes the phagocytic clearance of dying cells by phagocytes, including macrophages, following cardiovascular and cerebrovascular injuries.
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B, Z., Y, Z., Z, Y., K, J., Z, Z., S, C., X, Z., Q, W., & X, Z. (2024). Efferocytosis: the resolution of inflammation in cardiovascular and cerebrovascular disease.. doi.org. https://doi.org/10.3389/fimmu.2024.1485222
Gut microbiota depletion enhances brain Treg populations, which facilitate scavenger pathway-mediated erythrophagocytosis and hematoma resolution.
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Y, Z., Y, L., X, H., Y, Z., S, X., Y, F., Y, K., H, C., L, F., H, H., L, H., X, Y., J, W., L, J., J, H., X, F., H, Z., S, C., & L, W. (2025). Gut microbiota depletion accelerates hematoma resolution and neurological recovery after intracerebral hemorrhage via p-coumaric acid-promoted Treg differentiation.. doi.org. https://doi.org/10.7150/thno.113764
Microglia/macrophage-mediated erythrophagocytosis plays a crucial role in hematoma clearance and is modulated by cytoskeletal dynamics after intracerebral hemorrhage.
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Y, Z., P, H., M, C., Y, C., X, Z., X, H., & L, X. (2024). ATAT1 deficiency enhances microglia/macrophage-mediated erythrophagocytosis and hematoma absorption following intracerebral hemorrhage.. doi.org. https://doi.org/10.4103/1673-5374.382984
Extravasated erythrocytes undergo macrophage erythrophagocytosis, releasing hemoglobin breakdown products that influence local inflammation and disease pathology.
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MA, B., WA, B., & AE, M. (2023). Inflammatory Bowel Disease-Associated Colorectal Cancer: Translational and Transformational Risks Posed by Exogenous Free Hemoglobin Alpha Chain, A By-Product of Extravasated Erythrocyte Macrophage Erythrophagocytosis.. doi.org. https://doi.org/10.3390/medicina59071254
Microglia and macrophages clear hematomas via erythrophagocytosis using specific receptors such as TAM receptors and CD36.
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S, W., X, J., R, M., & M, L. (2025). Potential Therapeutic Targets and Emerging Strategies to Promote Hematoma Resolution in Intracerebral Hemorrhage.. doi.org. https://doi.org/10.31083/rn46121
Microglia accumulate iron through erythrophagocytosis of extravasated blood following blood-brain barrier disruption.
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J, W., M, L., Y, S., & S, W. (2026). The senescent niche hypothesis: microglial dysfunction and replacement strategies in drug-resistant epilepsy.. doi.org. https://doi.org/10.3389/fimmu.2026.1807871
Macrophages undergo non-classical, erythrophagocytosis-induced processes during heme catabolism and iron homeostasis in tissue hemorrhage contexts.
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J, X., C, C., HY, Y., YY, Z., CR, W., X, X., H, P., DH, L., & Y, L. (2026). Reappraising heme oxygenase-1 as a ferroptosis modulator in atherosclerosis: a mechanism-focused review.. doi.org. https://doi.org/10.3389/fimmu.2026.1737751
Inhibition of immunoproteasomes in microglia enhances erythrophagocytosis and promotes a reparative phenotype after hemorrhage.
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WF, H., CH, L., HY, H., CY, P., YF, W., TJ, L., PB, L., ST, T., CH, L., & HK, L. (2026). Immunoproteasome Inhibition Modulates Microglial Polarization to Facilitate Anti-Inflammatory Responses and Hematoma Resolution After Intracerebral Hemorrhage.. doi.org. https://doi.org/10.3390/cells15080664
What does the evidence say?
The retrieved papers consistently demonstrate across multiple models (intracerebral hemorrhage, stroke, and cardiovascular pathologies) that macrophages and microglia perform erythrophagocytosis and efferocytosis to clear extravasated blood cells and hematomas. There are no papers refuting this well-established biological function.
Receipt History
first checked05 Aug 2026
judged → SUPPORTED · 8705 Aug 2026
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