Prospects for the use of an original medicine based on hexapeptide succinate for organ protection in various diseases

The aim . To analyze and summarize the available results of experimental and clinical scientific studies of synthetic analogs of leu-enkephalin; to evaluate the expansion of the spectrum of application of the original medicine based on hexapeptide succinate in patients with various diseases of different etiologies. Materials and methods . An analysis of scientific literature data in the PubMed, eLibrary.ru and CyberLeninka databases was carried out. The search depth was 50 years (from 1976 to 2024), the list of references includes 60 scientific papers. Results . It was revealed that receptors for endogenous opioid peptides are widespread in living organisms. Modern neuropharmacology recognizes 4 main types of opioid receptors: μ (MOR) — mu, δ (DOR) — delta, κ (KOR) — kappa and NOP — nociceptive receptor, which bind to endogenous opioids such as enkephalins, endorphins, endomorphins, dynorphins and nociceptin. Due to their antioxidant, immunomodulatory, and anti-inflammatory properties, analogs of opioid peptides are widely used in Russian medicine. A number of experimental and clinical studies are presented, to prove that agonists of delta-opioid receptors can “soften” organ damage in a variety of diseases accompanied by oxidative stress and endothelial dysfunction. The dose-dependent regulatory effect is realized with intravenous, intramuscular and intranasal administration. The therapeutic efficacy of leu-enkephalin analogs based on tyrosyl-D-alanyl-glycyl-phenylalanyl-leucyl-arginine is analyzed, and the prospects for using the new original Russian medicine Ambervin ® Pulmo with the inclusion of succinic acid salts are also discussed. Conclusion. The information on the functional properties of leucine-enkephalin analogs presented in the article indicates broad prospects for the use of medicines based on tyrosyl-D-alanyl-glycyl-phenylalanyl-leucyl-arginine with the inclusion of succinic acid salt in the complex therapy of many diseases for the purpose of organ protection.