title: Determination of molecular weight of hyaluronic acid in bovine vitreous humour and Healon by high performance gel permeation chromatography and its depolymerization with ascorbic acid.
abstract: A method has been developed for the determination of the molecular weight of hyaluronic acid by high performance gel permeation chromatography. The molecular weight distribution was determined using three polymeric columns. Columns were calibrated using Pullulan Polymer molecular weight standards. The average molecular weight (+/- SD) of the hyaluronic acid in bovine vitreous humour and Healon were 1.20 x 10(6) Da (+/- 0.49 x 10(6) and 3.01 x 10(6) Da (+/- 0.14 x 10(6), respectively. Furthermore, the depolymerization of the hyaluronic acid in the presence of ascorbic acid (the concentration found in human eye) was studied. Samples incubated in the presence of atmospheric air showed more depolymerization than those where atmospheric air had been flushed-out with nitrogen.
authors.affiliation: Department of Pharmacy, University of Strathclyde, Glasgow, U.K.
authors.forename: Z
authors.initials: Z
authors.lastname: Iqbal
authors.forename: J M
authors.initials: JM
authors.lastname: Midgley
authors.forename: D G
authors.initials: DG
authors.lastname: Watson
authors.forename: S D
authors.initials: SD
authors.lastname: Karditsas
authors.forename: G N
authors.initials: GN
authors.lastname: Dutton
authors.forename: W
authors.initials: W
authors.lastname: Wilson
mesh_terms: D000818:Animals; D001205:Ascorbic Acid / Q000737:chemistry*; D002021:Buffers; D002138:Calibration; D002417:Cattle; D002850:Chromatography, Gel; D002851:Chromatography, High Pressure Liquid; D006820:Hyaluronic Acid / Q000032:analysis*; D008970:Molecular Weight; D011108:Polymers; D015203:Reproducibility of Results; D014822:Vitreous Body / Q000378:metabolism*
chemical_list: D002021:Buffers; D011108:Polymers; D006820:Hyaluronic Acid; D001205:Ascorbic Acid