[Temperature dependence of the sedimentation velocity of human erythrocytes].
The sedimentation velocity of yeast cells and human erythrocytes as a function of temperature was studied in a range from 6 degrees C to 40 degrees C. Whereas this function for yeast cells can be described by an exponential function the measurements with erythorcytes show minima at 10 degrees C and 20 degrees C, respectively, and maxima at 13 degrees C and 38 degrees C. Changes of the density or the shape of the cells cannot be the reason for these effects. Viscosity measurements on erythrocyte suspensions as a function of temperature also show deviations from the exponential function between 18 degrees C and 24 degrees C. The results explain that alterations of the membrane viscosity and phase transitions of the membrane lipids influence the sedimentation velocity of erythrocytes.
D001799:Blood Sedimentation; D001809:Blood Viscosity; D004910:Erythrocyte Membrane / Q000378:metabolism; D004912:Erythrocytes / Q000502:physiology*; D006801:Humans; D008055:Lipids / Q000097:blood; D013696:Temperature; D013997:Time Factors
D008055:Lipids
Die Temperaturabhängigkeit der Sedimentationsgeschwindigkeit menschlicher Erythrozyten