Determining the ζ-potential of plane membranes from tangential streaming potential measurements: effect of the membrane body conductance

Fiévet, P.; Sbai, Mohammed Adil; Szymczyk, Anthony; Vidonne, A.

doi:10.1016/j.memsci.2003.09.007

Cited by 110 publications

(63 citation statements)

References 32 publications

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“…One of the typical measuring configurations consists in the tangential measurement of the streaming potential/current, which is generated by forcing a liquid to flow in the channel between two flat samples that are facing each other. [21][22][23][24][25] This flow pulls the charges of the diffuse layer, generating a potential/current that relates to the zeta potential through the wellknown equation derived by von Helmholz and von Smoluchowski (Eq. 1):…”

Section: Theorymentioning

confidence: 99%

“…The problem with porous samples, with open pore structures, arises because part of the fluid that is forced in between the two samples travels also through the porous material generating a "parasite" current/potential that adds to that of the channel, masking the results. 24,26,27 In this case, Eq.1 no longer holds, and it should be replaced by the equation proposed in 2010 by Yaroschuck and Luxbacher 20 (Eq. 2).…”

Section: Theorymentioning

confidence: 99%

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Impact of Porosity and Electrolyte Composition on the Surface Charge of Hydroxyapatite Biomaterials

Español

Mestres

Luxbacher

et al. 2016

ACS Appl. Mater. Interfaces

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The success or failure of a material when implanted in the body is greatly determined by the surface properties of the material and the host tissue reactions. The very first event that takes place after implantation is the interaction of soluble ions, molecules and proteins from the biological environment with the material surface leading to the formation of an adsorbed protein layer that will later influence cell attachment. In this context, the particular topography and surface charge of a material become critical as they influence the nature of the proteins that will adsorb. However, very limited information is available on the surface charge of porous substrates. Only until very recently the determination of the zeta potential on porous membranes has been accurately determined. The goal of this work was to implement the previous findings for the determination of the zeta potential of a series of porous hydroxyapatite (HA) substrates and to assess how porosity affects the measurements. In addition, studies using various electrolytes were also performed to prove how the specific affinity of certain ions for HA can further impact surface charge. The results showed that all materials exhibited very similar external surface charge (~ -23 mV), consistent with their almost identical topographies.However, the presence of interconnected pores underneath the sample surface resulted in an additional internal zeta potential that varied with the porosity content. Measurements with different electrolytes confirmed the selectivity of divalent ions for HA underlying the importance of testing biomaterials using relevant electrolytes.3

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Section: Theorymentioning

confidence: 99%

Section: Theorymentioning

confidence: 99%

Impact of Porosity and Electrolyte Composition on the Surface Charge of Hydroxyapatite Biomaterials

Español

Mestres

Luxbacher

et al. 2016

ACS Appl. Mater. Interfaces

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show abstract

“…We first measured the surface zeta potential of H-CM using a streaming potential method (Tseng et al 2008;Fievet et al 2003;Hunter 1981) and obtained a negative surface charge at -17 mV at neutral pH. We then applied the cationic poly-ethylenimine (PEI)/DNA polyplexes (zeta potential at ?20 mV) as the genetransfer vectors and studied their adsorption onto H-CM.…”

Section: Electrostatic Adsorption Of Polyplexes Onto H-cmmentioning

confidence: 99%

Application of heparinized cellulose matrices for substrate-mediated bFGF peptide and transgene delivery to stimulate cellular proliferation

2010

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We investigated the use of heparinized cellulose matrices (H-CM) as affinity substrates for binding of basic fibroblast growth factor (bFGF), a heparin-binding peptide, to facilitate cellular proliferation and substrate-mediated transgene delivery. Using human HT-1080 fibroblasts and Saos-2 osteoblasts as cellular models, we showed that H-CM was a friendly substrate for cellular adhesion. Once adhered, cells received stimulation from the bound bFGF, leading to enhanced proliferation. Furthermore, taking advantage of the negative zeta potential of H-CM, we applied electrostatic adsorption to immobilize cationic poly-ethylenimine/DNA polyplexes onto the surface for transgene delivery upon cellular adhesion. Because bFGF stimulated cellular proliferation, we observed a significant increase in transfection efficiency in comparison to transfection on H-CM without the bFGF binding. We showed that H-CM was capable of mediating both bFGF peptide and bFGF transgene delivery to induce a synergistic stimulation of cellular proliferation, thus offering a useful device for fabrication of tissue scaffolds.

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“…The surface charge of SIS (approximately 150 lm thick) was measured using a streaming potential method [23,24]. Fig.…”

Section: Surface Zeta Potential Measurement Of Sismentioning

confidence: 99%

Electrostatic immobilization of DNA polyplexes on small intestinal submucosa for tissue substrate-mediated transfection

2008

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Determining the ζ-potential of plane membranes from tangential streaming potential measurements: effect of the membrane body conductance

Cited by 110 publications

References 32 publications

Impact of Porosity and Electrolyte Composition on the Surface Charge of Hydroxyapatite Biomaterials

Impact of Porosity and Electrolyte Composition on the Surface Charge of Hydroxyapatite Biomaterials

Application of heparinized cellulose matrices for substrate-mediated bFGF peptide and transgene delivery to stimulate cellular proliferation

Electrostatic immobilization of DNA polyplexes on small intestinal submucosa for tissue substrate-mediated transfection

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