title: A new method for determination of hyaluronidase activity in biological samples using capillary zone electrophoresis.
abstract: The aim of the study was to develop a new capillary zone electrophoresis (CZE) method for determination of enzymatic activity of hyaluronidase. The method permits monitoring of the process of hyaluronic acid digestion by hyaluronidase. Studies were performed using CZE instrument equipped with capillary of 64.5 cm total length, 56 cm effective length and internal diameter 75 µm. Separation was performed in the phosphate buffer (pH 8.10) in the electric field of 20 kV, λ = 220 nm. The procedure was based on mixing a known quantity of hyaluronic acid and an aliquot of hyaluronidase solution, followed by obtaining CZE profiles after a known period of incubation (0.5 h). The activity of hyaluronidase was calculated using multiple regression analysis in which sizes of the peaks of the main degradation products were used. The newly developed method was fully validated and it is appropriate to evaluate the activity of hyaluronidase originating from different sources with high precision and accuracy. t-Tests showed that there were no significant differences between results obtained using turbidimetric, viscosimetric and the new CZE method. The developed method is characterized by a short duration of analysis, low volume of analyzed sample, small amount of buffers used and low cost of analysis.
authors.affiliation: Department of Inorganic and Analytical Chemistry, Poznan University of Medical Sciences, Poznań, Poland.
authors.forename: Jan
authors.initials: J
authors.lastname: Matysiak
authors.forename: Paweł
authors.initials: P
authors.lastname: Dereziński
authors.forename: Bartosz
authors.initials: B
authors.lastname: Urbaniak
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Klupczyńska
authors.forename: Anna
authors.initials: A
authors.lastname: Zalewska
authors.forename: Zenon J
authors.initials: ZJ
authors.lastname: Kokot
mesh_terms: D000818:Animals; D001514:Bee Venoms / Q000201:enzymology; D002417:Cattle; D019075:Electrophoresis, Capillary / Q000379:methods*; D006820:Hyaluronic Acid / Q000032:analysis / Q000378:metabolism; D006821:Hyaluronoglucosaminidase / Q000032:analysis* / Q000378:metabolism*; D057230:Limit of Detection; D008297:Male; D025341:Principal Component Analysis; D012044:Regression Analysis; D015203:Reproducibility of Results; D013737:Testis / Q000201:enzymology
chemical_list: D001514:Bee Venoms; D006820:Hyaluronic Acid; D006821:Hyaluronoglucosaminidase
keywords: capillary electrophoresis; hyaluronidase activity; natural products