title: Effect of electric field on erythrocyte sedimentation rate. II. Dependence on electric current.
abstract: We measured the electric current dependence of sedimentation curves of swine erythrocytes in a saline solution at the volume fraction of erythrocytes H = 0.091 and 0.220. The sedimentation curve fitted well to the exponential type equation l = a[1-exp(-bt)] at the upward initial electric current I0 = 0.50 mA, 1.01 mA and 1.50 mA, where l is the length of the medium layer at time t, and a and b are phenomenological parameters. The initial slope v0 of sedimentation curve was enhanced from 0.68 mm/hr at I0 = 0 mA to 2.85 mm/hr, 3.87 mm/hr and 5.50 mm/hr at I0 = 0.50 mA, 1.01 mA and 1.50 mA, respectively, for H = 0.220. We also made sedimentation measurements of erythrocytes in their own plasma at H = 0.220 and 0.316. Sedimentation curves coincided with the sigmoidal type equation l = l infinity/[1 + (t50/t)beta] at I0 = 0 mA and 0.50 mA, where l infinity is l at t----infinity, t50 is the time when the plasma level falls to l infinity/2 and beta is a constant. The maximum slope vmax of sedimentation curve increased from 13.29 mm/hr at I0 = 0 mA to 18.65 mm/hr at I0 = 0.50 mA for H = 0.220.
authors: Department of Biological & Chemical Engineering, Faculty of Technology, Gunma University, Japan.
authors: M
authors: M
authors: Long
authors: Y
authors: Y
authors: Toyama
authors: T
authors: T
authors: Dobashi
authors: A
authors: A
authors: Sakanishi
authors: Y P
authors: YP
authors: Wu
authors: S
authors: S
authors: Oka
mesh_terms: D000818:Animals; D001799:Blood Sedimentation; D004560:Electricity; D008433:Mathematics; D010949:Plasma; D012965:Sodium Chloride; D013552:Swine
chemical_list: D012965:Sodium Chloride