ArticleJournal of neuropathology and experimental neurology2018
Cleaved β-Actin May Contribute to DNA Fragmentation Following Very Brief Focal Cerebral Ischemia.
Article in Journal of neuropathology and experimental neurology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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Who cites it
5 citing papers in PubMed, 6 citations in OpenAlex.
- Selected Post-Translational Modifications-Phosphorylation and Glutathionylation-As Factors Involved in the Regulation During the Pregnancy Course and Foetal Membrane Release in Cows.International journal of molecular sciences · 2025Article
- 14-3-3ζ: an optimal housekeeping protein for western blot analysis in swine rotator cuff tendon studies.Molecular and cellular biochemistry · 2025Article
- Newborns with Favourable Outcomes after Perinatal Asphyxia Have Upregulated Glucose Metabolism-Related Proteins in Plasma.Biomolecules · 2023Article
- β-Actin: An Emerging Biomarker in Ischemic Stroke.Cellular and molecular neurobiology · 2023Review
- Oxidized lipids as molecular biomarkers in carotid in-stent restenosis: mechanisms and clinical implications.Frontiers in neurologyReview
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
Abstract
Our previous study demonstrated caspase independent DNA fragmentation after very brief cerebral ischemia, the mechanism of which was unclear. In this study, we explore whether actin is cleaved following focal cerebral ischemia, and whether these structural changes of actin might modulate DNA fragmentation observed following focal ischemia. Results showed that a cleaved β-actin fragment was identified in brains of rats 24 hours following 10-minute and 2-hour focal ischemia. Though granzyme B and caspase-3 cleaved β-actin in vitro, the fragment size of β-actin cleaved by granzyme B was the same as those found after 10-minute and 2-hour focal ischemia. This was consistent with increases of granzyme B activity after 10-minute and 2-hour ischemia compared with controls. Cerebral extracts from 10-minute and 2-hour ischemic brains degraded DNA in vitro. Adding intact β-actin to these samples completely abolished DNA degradation from the 10-minute ischemia group but not from the 2-hour ischemia group. We concluded that β-actin is likely cleaved by granzyme B by 24 hours following 10-minute and 2-hour focal cerebral ischemia. Intact β-actin inhibits DNase, and cleavage of β-actin activates DNase, which leads to DNA fragmentation observed in the brain following very brief focal ischemia.
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Registered trials
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