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Peptides Glu-Asp-Arg and Lys-Glu-Asp stimulate serotonin expression in aging cultures of brain cortex cells. Peptide regulation of 5-tryptophan hydroxylase gene encoding the enzyme involved in serotonin synthesis was demonstrated by the molecular docking method. The CCTGCC nucleotide sequence in 5-tryptophan hydroxylase gene was found to be complementary to… (More)
The review presents comparative characteristics of 2 peptide neuroprotective groups: polypeptide complexes (cortexin, cerebrolizin) and short peptides (semax, kortagen, pinealon). The data of clinical applying of peptides in elderly and old age people and cellular and molecular mechanisms of their neuroprotective activity is described.
Peptide bioregulators promote restoration of the physiological activity of the retina in retinitis pigmentosa in older adults and in animal models. The molecular mechanism of the physiological activity of peptides is associated with their ability to epigenetically regulate the synthesis of protein markers of the differentiation of retinal neurons and… (More)
We studied the effect of 20 standard L-amino acids on proliferation of the nervous, cardiovascular, urogenital, digestive, and immune system tissues from young and old animals in organotypic cultures. The effect of amino acids on tissue culture proliferation depended on their origin and animal age.
Molecular mechanisms of the neuroprotective effect of peptide T-33 and cortexin were studied on organotypic cultures of the brain from young and old Wistar rats. The effective concentration of peptide T-33 stimulating proliferative activity of neurons considerably surpassed that of cortexin. Cortexin and peptide T-33 stimulated the expression of serotonin,… (More)