title: Purification and analysis of a 5kDa component of enamel matrix derivative.
abstract: High performance liquid chromatography (HPLC) methods were used to analyse a 5kDa component purified from enamel matrix derivative (EMD), the active ingredient in Emdogain, a commercial product for periodontal tissue regeneration. After initial purification by size-exclusion chromatography (SEC) on a 100 cm x 5 cm column (Bio-Gel P-30 Fine, 280 nm), collected fractions were analysed by size-exclusion HPLC (SE HPLC; TSK-Gel Super SW2000, 220 nm). The fractions containing only the 5kDa component were analysed by reversed-phase high-pressure chromatography (RP HPLC; YMC-Pack ODS-A, 200 nm), revealing four peaks of the 5kDa component. From 1200 mg of EMD (of which 9% is the 5kDa component), approximately 65 mg of lyophilised 5kDa component were obtained, corresponding to a recovery of 60%. The SE HPLC method was mainly suitable for qualitative analysis, whereas the RP HPLC method was appropriate for both qualitative and quantitative analysis.
authors: BIORA AB, a company of the Straumann Group, Medeon Science Park, Malmö, Sweden.
authors: Alexandra
authors: A
authors: Mumulidu
authors: Bergisa
authors: B
authors: Hildebrand
authors: Beata
authors: B
authors: Fabi
authors: Lars
authors: L
authors: Hammarström
authors: David L
authors: DL
authors: Cochran
authors: Michel
authors: M
authors: Dard
authors: Stephanie
authors: S
authors: Lemoult
mesh_terms: D002021:Buffers; D005591:Chemical Fractionation; D002850:Chromatography, Gel; D002851:Chromatography, High Pressure Liquid; D003746:Dental Enamel Proteins / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*; D004591:Electrophoresis, Polyacrylamide Gel; D006863:Hydrogen-Ion Concentration; D008970:Molecular Weight; D011312:Pressure; D015203:Reproducibility of Results; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
chemical_list: D002021:Buffers; D003746:Dental Enamel Proteins; C109069:enamel matrix proteins