title: Characterization and quantitation of the active polynucleotide fraction (PDRN) from human placenta, a tissue repair stimulating agent.
abstract: The polydeoxyribonucleotide (PDRN) fraction is an extract which forms the active component in a new formulation of the drug Placentex (a tissue repair stimulating agent), obtained from human placenta through an original proprietory extraction method. From a comparison of the UV, NMR and IR spectra of this fraction (before and after nuclease treatment) with that of a similar standard (Sigma D1501), it was shown that the active substances in the PDRN fraction mainly consist of a mixture of DNA fragments. By gel electrophoresis, the molecular weights of the DNA fragments were shown to range from 50 to 2000 base pairs. Finally, an HPLC method is described, based on an anion-exchange material capable of determining the amount of PDRN in different batches of the extract, which varied from 80 to 90%.
authors.affiliation: Mastelli Srl, Officina Biofarmaceutica, Sanremo, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Tonello
authors.forename: M
authors.initials: M
authors.lastname: Daglio
authors.forename: N
authors.initials: N
authors.lastname: Zaccarelli
authors.forename: E
authors.initials: E
authors.lastname: Sottofattori
authors.forename: M
authors.initials: M
authors.lastname: Mazzei
authors.forename: A
authors.initials: A
authors.lastname: Balbi
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004247:DNA / Q000737:chemistry; D006801:Humans; D008970:Molecular Weight; D010924:Placental Extracts / Q000032:analysis* / Q000737:chemistry; D011089:Polydeoxyribonucleotides / Q000032:analysis* / Q000737:chemistry; D015203:Reproducibility of Results
chemical_list: D010924:Placental Extracts; D011089:Polydeoxyribonucleotides; D004247:DNA