Abstract:
:Oxidative stress is crucially involved in the pathogenesis of neurological diseases such as stroke and degenerative diseases. We previously demonstrated that platelet-derived growth factors (PDGFs) protected neurons from H2O2-induced oxidative stress and indicated the involvement of PI3K-Akt and MAP kinases as an underlying mechanism. Ca(2+) overload has been shown to mediate the neurotoxic effects of oxidative stress and excitotoxicity. We examined the effects of PDGFs on H2O2-induced Ca(2+) overload in primary cultured neurons to further clarify their neuroprotective mechanism. H2O2-induced Ca(2+) overload in neurons in a dose-dependent manner, while pretreating neurons with PDGF-BB for 24 hours largely suppressed it. In a comparative study, the suppressive effects of PDGF-BB were more potent than those of PDGF-AA. We then evaluated calpain activation, which was induced by Ca(2+) overload and mediated both apoptotic and nonapoptotic cell death. H2O2-induced calpain activation in neurons in a dose-dependent manner. Pretreatment of PDGF-BB completely blocked H2O2-induced calpain activation. To the best of our knowledge, the present study is the first to demonstrate the mechanism underlying the neuroprotective effects of PDGF against oxidative stress via the suppression of Ca(2+) overload and inactivation of calpain and suggests that PDGF-BB may be a potential therapeutic target of neurological diseases.
journal_name
Oxid Med Cell Longevjournal_title
Oxidative medicine and cellular longevityauthors
Zheng LS,Ishii Y,Zhao QL,Kondo T,Sasahara Mdoi
10.1155/2013/367206subject
Has Abstractpub_date
2013-01-01 00:00:00pages
367206eissn
1942-0900issn
1942-0994journal_volume
2013pub_type
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journal_title:Oxidative medicine and cellular longevity
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doi:10.1155/2018/4740739
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doi:10.1155/2013/612784
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更新日期:2019-05-02 00:00:00
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pub_type: 已发布勘误
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更新日期:2020-08-24 00:00:00
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doi:10.4161/oxim.2.4.9745
更新日期:2009-09-01 00:00:00
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章
doi:10.1155/2014/735618
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journal_title:Oxidative medicine and cellular longevity
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
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pub_type: 杂志文章
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journal_title:Oxidative medicine and cellular longevity
pub_type: 杂志文章,评审
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