Approaches to the assessment of quantitative composition of drugs based on natural peptides containing glycosaminoglycan-peptide complex

Abstract

The preparations isolated from the biomaterial of farm animals and fish were studied. These preparations (rumalon, alflutop) cannot be obtained in equal proportions and concentrations during their production. An algorithm for quantitative determination of components of peptides of natural origin based on the study of model drugs containing a glycosaminoglycan-peptide complex has been developed. Using infrared spectroscopy and high performance liquid chromatography, the concentrations of chondroitin sodium sulfate, hyaluronic acid, glucosamine, protein, free amino acids and amino acids that make up the peptides (alflutop and rumalon) were established. In comparison with the majority of monocomponent drugs registered in the territory of the Russian Federation and containing chondroitin sodium sulfate at a concentration of 100 mg/ml, glucosamine drugs (200mg/ml), hyaluronic acid drugs (10 mg/ml) it was found that the main active components of the studied drugs weremore than 50, 100 and 7 times smaller. At the same time, the preparations under study contained a large percentage of free amino acids or short-chain peptides. It indirectly suggests their participation in the clinical efficacy of drugs based on natural peptides.
 The developed algorithm for quantitative determination of components of peptide preparations of natural origin, including common and generally available methods sequence (identification of samples by infrared spectroscopy in comparison with standard samples, quantitative determination of chondroitin sodium sulfate, hyaluronic acid, glucosamine, protein and amino acids by infrared spectroscopy and highly efficient liquid chromatography) is advisable to use when determining minimum specific values of contents (concentrations) of active components and adjuvants of peptide origin in studies and registration of drugs based on them, as well as to justify ways in order to search and explain the mechanisms of action of such compounds.