Peptides for Neuroprotection Research

2 research peptides are currently studied for neuroprotection research. This guide ranks them by evidence strength and covers their mechanisms, safety profiles, and current clinical status.

Pinealon (Glu-Asp-Arg, EDR), a synthetic tripeptide with a molecular weight of approximately 418 g/mol, was developed by Vladimir Khavinson at the St. Petersburg Institute of Bioregulation and Gerontology. This compound is designed to act as a bioregulatory peptide, specifically targeting functions of the brain and pineal gland. Research surrounding Pinealon is primarily derived from Russian preclinical studies and small-scale open-label clinical observations, which lack the rigor of controlled trials published in peer-reviewed international journals. The key claims associated with Pinealon include its proposed neuroprotective effects observed in cell culture models and its potential to enhance melatonin production, a hormone involved in regulating sleep and circadian rhythms. However, the absence of robust clinical evidence raises questions about the reliability of these claims and highlights the need for further research to validate its therapeutic potential.

Cortagen (Ala-Glu-Asp-Leu, AEDL) is a synthetic tetrapeptide with a molecular weight of approximately 446 g/mol, also developed by Vladimir Khavinson. This peptide is intended to serve as a bioregulatory agent specifically targeting the cerebral cortex, with claims that it may normalize gene expression within brain tissue. Similar to Pinealon, the evidence supporting Cortagen's neuroprotective properties is largely based on Russian preclinical studies and small uncontrolled clinical observations. The reported effects include neuroprotection in ischemia models and the normalization of gene expression in cortical tissues. However, the findings from these studies have not been independently replicated or subjected to rigorous controlled clinical trials, which limits the generalizability and clinical relevance of the results. The current understanding of Cortagen's mechanisms and therapeutic potential remains speculative, underscoring the necessity for further investigation to establish its efficacy and safety profile.