Measurement of membrane elasticity by micro-pipette aspiration.

Measurement of the elasticity modulus of artificial and real vocal folds using pipette aspiration

REGULAR ARTICLES Effect of Wheat Germ Agglutinin on Properties of Erythrocyte Membrane the Viscoelastic

The elasticity and viscosity of the human erythrocyte membrane were measured as a function of the concentration of wheat germ agglutinin (WGA) in a suspending solution containing I mg/ml albumin, ~5 x 10 s cells/ml and between 0.0 and 0.2 /ig/ml WGA. Membrane elasticity was characterized by the elastic shear modulus, which provided a measure of the resistance of the membrane to constant-area el...

Abnormalities in the mechanical properties of red blood cells caused by Plasmodium falciparum.

Although changes in the mechanical properties of infected red cells may contribute to the pathophysiology of malaria, such changes have not previously been described in detail. In this study, the physical properties of individual cells from both clinical and cultured samples infected with Plasmodium falciparum were tested using micropipette aspiration techniques. Cells containing ring forms too...

Mechanical Properties of the Sarcolemma and Myoplasm in Frog Muscle as a Function of Sarcomere Length

The elastimeter method was applied to the single muscle fiber of the frog semitendinosus to obtain the elastic moduli of the sarcolemma and myoplasm, as well as their relative contributions to resting fiber tension at different extensions. A bleb which was sucked into a flat-mouthed pipette at the fiber surface separated into an external sarcolemmal membrane and a thick inner myoplasmic region....

Mechanical properties of the cell nucleus and the effect of emerin deficiency.

Nuclear structure and mechanics are gaining recognition as important factors that affect gene expression, development, and differentiation in normal function and disease, yet the physical mechanisms that govern nuclear mechanical stability remain unclear. Here we examined the physical properties of the cell nucleus by imaging fluorescently labeled components of the inner nucleus (chromatin and ...