The Poisson-Boltzmann equation is modified to consider charge ionogenicity, steric exclusion, and charge distribution in order to describe the perimembranous electrostatic potential profile in a manner consistent with the known morphology and biochemical composition of the cell's glycocalyx. Exact numerical and approximate analytical solutions are given for various charge distributions and for ...

Excised roots of barley (Hordeum vulgare, var. Campana) were incubated for periods up to 24 hours in salt solutions of various concentrations and ion accumulation was determined at various time intervals. The data were consistent with the existence of 2 components of ion uptake, one accounting for ion uptake from solutions below 1 mm and both components contributing to uptake from solutions of ...

The curvature stress of DNA packed inside a phage is balanced against its electrostatic self-interaction. The DNA density is supposed nonuniform and as a result the Donnan effect is also inhomogeneous. The coarse-grained DNA density is a nonlinear function of the DNA radius of curvature at a given position inside the bacteriophage. It turns out that a region (or regions) exists totally free fro...

It was shown that Tl+ can stoichiometrically displace K+ in frog muscle cells. This displacement is independent of the function of cell membrane and postulated pumps and of a macroscopic electric charge or Donnan effect. It follows that Cs+ and Tl+ compete for the adsorption sites normally occupied by K+. On this basis, the association-induction hypothesis predicts that Cs+ and Tl+, like K+, sh...

Background: Hepatitis B (HB) vaccination is a recommended procedure in all dialysis patients, but its efficacy has not been perfect. In the current study, we aimed to conduct a comprehensive review of the literature to find and pool data of the randomized trials evaluating the impact of serum albumin levels on the immunogenicity of HB vaccination in dialysis patients. Methods: Literature searc...

La,dialyse peritoneale constitue une methode d,epuration extra-renale simple,efficqCe et d,un prix de revient modere.  La dialyse peritoneale,ne necestite aueune­instalation complexe,peut-etre consideree comme une methode de reanimation non specialisedont la vulga­rosation doit permettre:  De traiter surplace d,une maniere intensive et prophylactique les nombreuses insuffisances renales aiPue...