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http://purl.uniprot.org/citations/19910549http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/19910549http://www.w3.org/2000/01/rdf-schema#comment"

Background and purpose

Emerging evidence suggests that mitochondrial damage-mediated neuronal apoptosis is a major contributor to neonatal hypoxic-ischemic (H-I) brain injury. This study was performed to determine whether targeted inhibition of the apoptotic protease activating factor-1 (Apaf-1) signaling pathway downstream of mitochondrial damage confers neuroprotection in rodent models of neonatal H-I.

Methods

H-I was induced in 7-day-old (P7) transgenic mice overexpressing the specific Apaf-1-inhibitory protein AIP. Apaf-1 inhibition was also achieved in P7 rats by protein transduction-enhanced delivery of recombinant AIP. Pups were euthanized 6 to 24 hours after H-I for assessing caspase activation and mitochondrial release of cytochrome c and AIF, and 7 days after H-I for analyzing brain tissue damage. Sensorimotor functions were assessed in rats up to 4 weeks after H-I.

Results

Transgenic overexpression of AIP protected against H-I brain injury, resulting in attenuated activation of caspase-9 and caspase-3, and attenuated brain tissue loss. In neonatal H-I rats, intraperitoneal injection of TAT-AIP, but not the control proteins TAT-GFP or AIP, decreased caspase activation and brain damage and improved neurological functions. Neuroprotection conferred by AIP was also associated with significantly reduced release of cytochrome c and AIF from mitochondria.

Conclusions

The Apaf-1 signaling pathway, which transmits cell death signals after mitochondrial damage to effector caspases, may be a legitimate therapeutic target for the treatment of neonatal H-I brain injury."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.org/dc/terms/identifier"doi:10.1161/strokeaha.109.561852"xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/author"Chen J."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/author"Gao Y."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/author"Hu X."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/author"Zhang W."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/author"Liang W."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/author"Cao G."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/author"Stetler R.A."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/author"Vosler P."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/date"2010"xsd:gYear
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/name"Stroke"xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/pages"166-172"xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/title"Neuroprotection against hypoxic-ischemic brain injury by inhibiting the apoptotic protease activating factor-1 pathway."xsd:string
http://purl.uniprot.org/citations/19910549http://purl.uniprot.org/core/volume"41"xsd:string
http://purl.uniprot.org/citations/19910549http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/19910549
http://purl.uniprot.org/citations/19910549http://xmlns.com/foaf/0.1/primaryTopicOfhttps://pubmed.ncbi.nlm.nih.gov/19910549
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