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ADAMTS13 gene deletion enhances plasma high-mobility group box1 elevation and neuroinflammation in brain ischemia-reperfusion injury

Fujioka, Masayuki ; Nakano, Takafumi ; Hayakawa, Kazuhide ; Irie, Keiichi ; Akitake, Yoshiharu ; Sakamoto, Yuya ; Mishima, Kenichi ; Muroi, Carl ; Yonekawa, Yasuhiro ; Banno, Fumiaki ; Kokame, Koichi ; Miyata, Toshiyuki ; Nishio, Kenji ; Okuchi, Kazuo ; Iwasaki, Katsunori ; Fujiwara, Michihiro ; Siesjö, Bo

In: Neurological Sciences, 2012, vol. 33, no. 5, p. 1107-1115

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    Titre
    • ADAMTS13 gene deletion enhances plasma high-mobility group box1 elevation and neuroinflammation in brain ischemia-reperfusion injury
    Auteur
    • Fujioka, Masayuki. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Nakano, Takafumi. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Hayakawa, Kazuhide. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Irie, Keiichi. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Akitake, Yoshiharu. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Sakamoto, Yuya. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Mishima, Kenichi. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Muroi, Carl. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Yonekawa, Yasuhiro. Department of Neurosurgery, University of Zurich, Zurich, Switzerland
    • Banno, Fumiaki. Research Institute, National Cerebral and Cardiovascular Center, Suita, Japan
    • Kokame, Koichi. Research Institute, National Cerebral and Cardiovascular Center, Suita, Japan
    • Miyata, Toshiyuki. Research Institute, National Cerebral and Cardiovascular Center, Suita, Japan
    • Nishio, Kenji. Emergency and Critical Care Medical Center, Nara Medical University, Nara, Japan
    • Okuchi, Kazuo. Emergency and Critical Care Medical Center, Nara Medical University, Nara, Japan
    • Iwasaki, Katsunori. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Fujiwara, Michihiro. Department of Neuropharmacology, Faculty of Pharmaceutical Sciences, Fukuoka University, Fukuoka, Japan
    • Siesjö, Bo. Laboratory for Experimental Brain Research, Lund University, Lund, Sweden
    Type de document
    • Postprint
    Identifiant OAI-PMH
    • oai:doc.rero.ch:315161
    Summary
    Highly adhesive glycoprotein von Willebrand factor (VWF) multimer induces platelet aggregation and leukocyte tethering or extravasation on the injured vascular wall, contributing to microvascular plugging and inflammation in brain ischemia-reperfusion. A disintegrin and metalloproteinase with thrombospondin type-1 motifs 13 (ADAMTS13) cleaves the VWF multimer strand and reduces its prothrombotic and proinflammatory functions. Although ADAMTS13 deficiency is known to amplify post-ischemic cerebral hypoperfusion, there is no report available on the effect of ADAMTS13 on inflammation after brain ischemia. We investigated if ADAMTS13 deficiency intensifies the increase of extracellular HMGB1, a hallmark of post-stroke inflammation, and exacerbates brain injury after ischemia-reperfusion. ADAMTS13 gene knockout (KO) and wild-type (WT) mice were subjected to 30-min middle cerebral artery occlusion (MCAO) and 23.5-h reperfusion under continuous monitoring of regional cerebral blood flow (rCBF). The infarct volume, plasma high-mobility group box1 (HMGB1) level, and immunoreactivity of the ischemic cerebral cortical tissue (double immunofluorescent labeling) against HMGB1/NeuN (neuron-specific nuclear protein) or HMGB1/MPO (myeloperoxidase) were estimated 24h after MCAO. ADAMTS13KO mice had larger brain infarcts compared with WT 24h after MCAO (p<0.05). The rCBF during reperfusion decreased more in ADAMTS13KO mice. The plasma HMGB1 increased more in ADAMTS13KO mice than in WT after ischemia-reperfusion (p<0.05). Brain ischemia induced more prominent activation of inflammatory cells co-expressing HMGB1 and MPO and more marked neuronal death in the cortical ischemic penumbra of ADAMTS13KO mice. ADAMTS13 deficiency may enhance systemic and brain inflammation associated with HMGB1 neurotoxicity, and aggravate brain damage in mice after brief focal ischemia. We hypothesize that ADAMTS13 protects brain from ischemia-reperfusion injury by regulating VWF-dependent inflammation as well as microvascular plugging