Figure 2: Influence of glucosamine hydrochloride (GH) on nitric oxide (NO) production from HFLS-OA after periostin stimulation in vitro. Human synoviocytes from an OA patient (HFLSOA) at 1 x 105 cells/ml were cultured with 100 ng/ml periostin for 24 h in the presence of various concentrations of GH. NO concentration in culture supernatants was measured by the Grees method and the results were expressed as the mean μMol/ml ± SE of triplicate cultures. One representative experiment of two.
