Abstract:
:Cinnamophilin (CINN, (8R, 8'S)-4, 4'-dihydroxy-3, 3'-dimethoxy-7-oxo-8, 8'-neolignan) protects against ischemic stroke in mice. While some anti-oxidative effects of CINN have been characterized, its therapeutic window and molecular basis for neuroprotection remain unclear. We evaluated antioxidant and anti-inflammatory properties and therapeutic window of CINN against brain ischemia using a panel of in vitro and in vivo assays. Data from lipid peroxidation and radical scavenging assays showed that CINN was a robust antioxidant and radical scavenger. CINN effectively inhibited the production of tumor necrosis factor alpha (TNF-alpha), nitrite/nitrate, interleukin-6 (IL-6) in lipopolysaccharide (LPS)-stimulated RAW 264.7 and BV2 cells (P<0.05, respectively). Relative to controls, CINN, administrated at 80 mg/kg, 2, 4, or 6 h postinsult, but not 12 h, significantly reduced brain infarction by 34-43% (P<0.05) and improved neurobehavioral outcome (P<0.05) following transient focal cerebral ischemia in rats. CINN (10-30 microM) also significantly reduced oxygen-glucose deprivation-induced neuronal damage (P<0.05) in rat organotypic hippocampal slices, even when it was administrated 2, 4, or 6 h postinsult. Together, CINN protects against ischemic brain damage with a therapeutic window up to 6 h in vivo and in vitro, which may, at least in part, be attributed by its direct antioxidant and anti-inflammatory effects.
journal_name
Exp Neuroljournal_title
Experimental neurologyauthors
Lee EJ,Chen HY,Hung YC,Chen TY,Lee MY,Yu SC,Chen YH,Chuang IC,Wu TSdoi
10.1016/j.expneurol.2009.01.019subject
Has Abstractpub_date
2009-05-01 00:00:00pages
74-83issue
1eissn
0014-4886issn
1090-2430pii
S0014-4886(09)00021-1journal_volume
217pub_type
杂志文章abstract::Disease-modifying treatments remain an unmet medical need in Parkinson's disease (PD). Such treatments can be operationally defined as interventions that slow down the clinical evolution to advanced disease milestones. A treatment may achieve this outcome by either inhibiting primary neurodegenerative events ("neuropr...
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journal_title:Experimental neurology
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journal_title:Experimental neurology
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journal_title:Experimental neurology
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abstract::Nitric oxide may be a key mediator of excitotoxic neuronal injury in the central nervous system. In the present experiments we found that S-methylthiocitrulline, a relatively selective neuronal nitric oxide synthase (NOS) inhibitor, produced significant neuroprotection against striatal lesions produced by malonate, an...
journal_title:Experimental neurology
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journal_title:Experimental neurology
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