Cortexin

Cortexin is a pharmaceutical neuropeptide preparation consisting of low-molecular-weight polypeptides extracted from animal cerebral cortex tissue. Similar in concept to Cerebrolysin but derived from cortical rather than whole-brain tissue, Cortexin represents a brain-region-specific approach to neuropeptide therapy.

The preparation contains a complex mixture of neurotrophic and neuromodulatory peptide fragments, including components related to nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), and other cortically-expressed signaling molecules. This composition provides multi-target neurotrophic support to damaged or aging brain tissue.

Clinical research, predominantly conducted in Russia and Eastern Europe, has investigated Cortexin for stroke recovery, traumatic brain injury, cognitive impairment in children and adults, and various neurodevelopmental conditions. Studies report improvements in cognitive function, neurological recovery scores, and electroencephalographic parameters following treatment.

The proposed mechanism involves multiple neurotrophic pathways activated by the peptide mixture, including promotion of neuronal survival, enhancement of synaptic plasticity, reduction of excitotoxicity, and anti-inflammatory effects in neural tissue. The low molecular weight of components enables penetration across the blood-brain barrier following intramuscular administration, allowing systemic delivery to produce central effects.