Por favor, use este identificador para citar o enlazar este ítem: DOI: 10.14670/HH-11-914

Título: Time-dependent and lesion-dependent HMGB1-selective localization in brains of patients with cerebrovascular diseases
Fecha de publicación: 2018
Editorial: Universidad de Murcia. Departamento de Biología Celular e Histología
Cita bibliográfica: Histology and Histopathology, Vol.33, nº2, (2018)
ISSN: 1699-5848
0213-3911
Materias relacionadas: CDU::6 - Ciencias aplicadas::61 - Medicina::616 - Patología. Medicina clínica. Oncología
Palabras clave: HMGB1
Cerebral infarction
Cerebral hemorrhage
Subarachnoid hemorrhage
Penumbra
Resumen: High mobility group box 1 protein (HMGB1) has multiple functions, including the maintenance of nucleosomes and the regulation of gene transcription. HMGB1 is released from activated macrophages, resulting in the induction of inflammatory cytokines. Recently, much research about the role of HMGB1 in cerebrovascular disease (CVD) has been reported. In an animal model, HMGB1 neutralization ameliorates brain infarction, there is an early release of HMGB1 from neurons, and HMGB1 antibody attenuates delayed cerebral vasospasm in experimental subarachnoid hemorrhage. It was also reported that elevation of HMGB1 in serum correlates with severity of acute intracerebral hemorrhage. However, the evidence of HMGB1 localization in brains of patients with CVD is very limited. Therefore, we investigated at autopsy the immunolocalization of HMGB1 in brains of patients with CVD (acute and chronic cerebral infarction, acute cerebral hemorrhage, subarachnoid hemorrhage). In 3 out of 10 acute cerebral infarction cases, the cytoplasm of neurons located around the ischemic core (i.e., penumbra) was positive for HMGB1. In the chronic stage of cerebral infarction, macrophages located in some ischemic regions were positive for HMGB1. Around the hematoma in the basal ganglia, HMGB1-like immunoreactivity (IR) was intense in macrophages. However, around the subarachnoid hematoma, HMGB1- like IR was not seen in the cortex. In arteries surrounded by subarachnoid hematoma, HMGB1-like IR was located in the cytoplasm of vascular smooth muscle cells. These findings, which partially differ from animal model results, may provide translational research and a basis for understanding the role of HMGB1 in brains of patients with CVD.
Autor/es principal/es: Umahara, Takahiko
Uchihara, Toshiki
Hirokawa, Katsuiku
Hirao, Kentaro
Shimizu, Soichiro
Hashimoto, Takao
Terasi, Hiroo
Hanyu, Haruo
URI: http://hdl.handle.net/10201/118388
DOI: DOI: 10.14670/HH-11-914
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 8
Derechos: info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Aparece en las colecciones:Vol.33, nº2 (2018)

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