Journal
JOURNAL OF BIOENERGETICS AND BIOMEMBRANES
Volume 36, Issue 4, Pages 363-368Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1023/B:JOBB.0000041769.06954.e4
Keywords
brain mitochondria; development; pediatric; cytochrome c; bcl-2; membrane permeability transition; apoptosis
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Funding
- NINDS NIH HHS [K08 NS 42805] Funding Source: Medline
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Secondary injury following traumatic brain injury (TBI) is characterized by a variety of pathophysiologic cascades. Many of these cascades can have significant detrimental effects on cerebral mitochondria. These include exposure of neurons to excitotoxic levels of excitatory neurotransmitters with intracellular calcium influx, generation of reactive oxygen species, and production of peptides that participate in apoptotic cell death. Both experimental and clinical TBI studies have documented mitochondrial dysfunction, and animal studies suggest this dysfunction begins early and may persist for days following injury. Furthermore, interventions targeting mitochondrial mechanisms have shown neuroprotection after TBI. Continued evaluation and understanding of mitochondrial mechanisms contributing to neuronal cell death and survival after TBI is indicated. In addition, important underlying factors, such as brain maturation, that influence mitochondrial function should be studied. The ability to identify, target, and manipulate mitochondrial dysfunction may lead to the development of novel therapies for the treatment of adult and pediatric TBI.
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