Proteolytic Mechanisms of Cell Death Following Traumatic Brain Injury

2003 ◽  
Author(s):  
Ronald L. Hayes
Keyword(s):  
Traumatic Brain Injury ◽  
Cell Death ◽  
Brain Injury

P3-053: (-)-PHENSERINE (PHEN) AND THE PREVENTION OF PRE-PROGRAMMED CELL DEATH IN ALZHEIMER'S DISEASE (AD) AND MILD TRAUMATIC BRAIN INJURY (MTBI)

2006 ◽  
Vol 14 (7S_Part_20) ◽  
pp. P1083-P1083
Author(s):  
Daniela Lecca ◽  
Miaad Bader ◽  
David Tweedie ◽  
Debomoy K. Lahiri ◽  
Robert E. Becker ◽  
...  
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Traumatic Brain Injury ◽  
Cell Death ◽  
Brain Injury ◽  
Programmed Cell Death ◽  
Mild Traumatic Brain Injury

scholarly journals Proneurotrophins Induce Apoptotic Neuronal Death After Controlled Cortical Impact Injury in Adult Mice

ASN NEURO ◽  
2020 ◽  
Vol 12 ◽  
pp. 175909142093086
Author(s):  
Laura E. Montroull ◽  
Deborah E. Rothbard ◽  
Hur D. Kanal ◽  
Veera D’Mello ◽  
Vincent Dodson ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Cell Death ◽  
Brain Injury ◽  
Neuronal Death ◽  
Apoptotic Cell ◽  
Neuronal Cell ◽  
Adult Brain ◽  
Neurotrophin Receptor ◽  
Cortical Impact ◽  
Impact Injury

The p75 neurotrophin receptor (p75NTR) can regulate multiple cellular functions including proliferation, survival, and apoptotic cell death. The p75NTR is widely expressed in the developing brain and is downregulated as the nervous system matures, with only a few neuronal subpopulations retaining expression into adulthood. However, p75NTR expression is induced following damage to the adult brain, including after traumatic brain injury, which is a leading cause of mortality and disability worldwide. A major consequence of traumatic brain injury is the progressive neuronal loss that continues secondary to the initial trauma, which ultimately contributes to cognitive decline. Understanding mechanisms governing this progressive neuronal death is key to developing targeted therapeutic strategies to provide neuroprotection and salvage cognitive function. In this study, we demonstrate that a cortical impact injury to the sensorimotor cortex elicits p75NTR expression in apoptotic neurons in the injury penumbra, confirming previous studies. To establish whether preventing p75NTR induction or blocking the ligands would reduce the extent of secondary neuronal cell death, we used a noninvasive intranasal strategy to deliver either siRNA to block the induction of p75NTR, or function-blocking antibodies to the ligands pro-nerve growth factor and pro-brain-derived neurotrophic factor. We demonstrate that either preventing the induction of p75NTR or blocking the proneurotrophin ligands provides neuroprotection and preserves sensorimotor function.

scholarly journals A Nuclear Attack on Traumatic Brain Injury: Sequestration of Cell Death in the Nucleus

2016 ◽  
Vol 22 (4) ◽  
pp. 306-315 ◽  
Author(s):  
Naoki Tajiri ◽  
Ike De La Peña ◽  
Sandra A. Acosta ◽  
Yuji Kaneko ◽  
Sharon Tamir ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Cell Death ◽  
Brain Injury ◽  
Nuclear Attack

scholarly journals Genetic Manipulation of Cell Death and Neuroplasticity Pathways in Traumatic Brain Injury

2012 ◽  
Vol 9 (2) ◽  
pp. 323-337 ◽  
Author(s):  
Kathleen M. Schoch ◽  
Sindhu K. Madathil ◽  
Kathryn E. Saatman
Keyword(s):  
Traumatic Brain Injury ◽  
Cell Death ◽  
Brain Injury ◽  
Genetic Manipulation

Autophagy is involved in traumatic brain injury-induced cell death and contributes to functional outcome deficits in mice

Neuroscience ◽  
2011 ◽  
Vol 184 ◽  
pp. 54-63 ◽  
Author(s):  
C.-L. Luo ◽  
B.-X. Li ◽  
Q.-Q. Li ◽  
X.-P. Chen ◽  
Y.-X. Sun ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Cell Death ◽  
Brain Injury ◽  
Functional Outcome

scholarly journals miR-212-5p attenuates ferroptotic neuronal death after traumatic brain injury by targeting Ptgs2

2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiao Xiao ◽  
Youjing Jiang ◽  
Weibo Liang ◽  
Yanyun Wang ◽  
Shuqiang Cao ◽  
...  
Keyword(s):  
Traumatic Brain Injury ◽  
Cell Death ◽  
Brain Injury ◽  
Neuronal Death ◽  
Sham Group ◽  
Ferrous Ion ◽  
Post Injury ◽  
Regulated Cell Death ◽  
Prostaglandin Endoperoxide Synthase ◽  
Improved Learning

Abstract Ferroptosis, a newly discovered form of iron-dependent regulated cell death, has been implicated in traumatic brain injury (TBI). MiR-212-5p has previously been reported to be downregulated in extracellular vesicles following TBI. To investigate whether miR-212-5p is involved in the ferroptotic neuronal death in TBI mice, we first examined the accumulation of malondialdehyde (MDA) and ferrous ion, and the expression of ferroptosis-related molecules at 6 h, 12 h, 24 h, 48 h and 72 h following controlled cortical impact (CCI) in mice. There was a significant upregulation in the expression of Gpx4 and Acsl4 at 6 h, Slc7a11 from 12 h to 72 h, and Nox2 and Sat1 from 6 h to 72 h post injury. Similarly, an upregulation in the expression of Gpx4 at 6 h, Nox2 from 6 h to 72 h, xCT from 12 h to 72 h, and Sat1 at 72 h after CCI was observed at the protein level. Interestingly, MDA and ferrous ion were increased whereas miR-212-5p was decreased in the CCI group compared to the sham group. Furthermore, we found that overexpression of miR-212-5p attenuated ferroptosis while downregulation of miR-212-5p promoted ferroptotic cell death partially by targeting prostaglandin-endoperoxide synthase-2 (Ptgs2) in HT-22 and Neuro-2a cell lines. In addition, administration of miR-212-5p in CCI mice significantly improved learning and spatial memory. Collectively, these findings indicate that miR-212-5p may protect against ferroptotic neuronal death in CCI mice partially by targeting Ptgs2.

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