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Neuroprotective vs Neurorestorative Mechanisms in TBI Recovery
TBI recovery unfolds in two distinct phases. Acute neuroprotection (first 72 hours post-injury) and chronic neurorestorative repair (weeks to months). Peptides that work in one window often fail in the other because the cellular environment shifts dramatically
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- TBI recovery unfolds in two distinct phases. Acute neuroprotection (first 72 hours post-injury) and chronic neurorestorative repair (weeks to months). Peptides that work in one window often fail in the other because the cellular environment shifts dramatically. During the acute phase, excitotoxicity (excess glutamate), oxidative stress, and inflammatory cytokine release dominate. Neuroprotective agents must limit cell death by stabilising mitochondrial membranes and reducing calcium influx. Chronic recovery, by contrast, requires synaptogenesis, dendritic sprouting, and reintegration of neural circuits. That's where neurorestorative peptides operate. Most TBI peptide research targets the chronic window because that's where functional improvement happens. The best peptides for TBI recovery enhance BDNF, NGF (nerve growth factor), or HGF signaling. All neurotrophic pathways proven to support synaptic repair. Cerebrolysin works as a neurotrophic factor mimetic, binding to the same recepto