The capability of Pluronic® F68 to stabilize human recombinant Factor VIII in solution was
assessed using zeta potential measurements. Hemophilia A is a genetic disorder in which the
body is missing Factor VIII (FVIII) from the blood coagulation cascade. The pharmaceutical
industry developed recombinant Factor VIII (rFVIII), the largest cloned...
Contact of blood with the surfaces of synthetic materials is associated with spontaneous protein adsorption, initiating platelet aggregation, the coagulation cascade, and the eventual development of a stable clot. Current therapy to inhibit implant-induced thrombosis is life-long administration of systemic anticoagulants. An alternative to the systemic administration of anticoagulant drugs...
The adsorption behavior of a human recombinant Factor VIII (rFVIII) in the presence of the nonionic, poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) triblock surfactant Pluronic® F-68 was evaluated by dynamic air-water tensiometry. Surface tension kinetics were recorded for F-68 in the absence of protein at concentrations ranging from 0 to 10,000...
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Joseph McGuire
The adsorption behavior of a human recombinant Factor VIII (rFVIII) in the
Nisin, an antibacterial peptide proven to be an effective inhibitor of Gram-positive bacteria, was incorporated into novel block copolymer constructs and tested for retained antibacterial activity. Covalent coupling was achieved by chemical modification of the N-terminal isoleucine to introduce a thiol group. Thiolated nisin derivatives were then linked to poly[ethylene...
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Joseph McGuire
Nisin, an antibacterial peptide proven to be an effective inhibitor of Gram
Interactions between proteins and contact surfaces can have
important implications in the food industry. Such interactions
contribute to the course of fouling of membrane surfaces and they
appear to mediate bacterial and spore adhesion to some degree as
well. In addition to protein and solution properties, interfacial
behavior is strongly...
While hydrophobic surfaces coated with the poly[ethylene oxide]-poly[propylene oxide]-poly[ethylene oxide] (PEO-PPO-PEO) surfactant Pluronic® F108 are highly resistant to plasma protein adsorption, the antimicrobial peptide nisin has been observed to adsorb in multilayer quantities at such surfaces, and the PEO chains themselves suggested to inhibit nisin exchange by blood proteins. But...
The primary goal was to characterize the adsorption of a recombinant therapeutic protein
in the presence of selected surfactant species at the air-water interface. For this purpose,
dynamic interfacial tensiometry was used to determine the surface tension kinetics
exhibited by protein solutions containing either Tween 80 or the poly[ethylene oxide]-...
The action of pendant, polyethylene oxide (PEO) brush layers as nonfouling coatings for
biomedical materials is well understood. However progress toward clinical application of stable, high density PEO coatings has historically been impeded by the lack of cost effective, noninvasive methods for their preparation. Triblock polymers featuring a hydrophobic, polypropylene...
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Joseph McGuire
The action of pendant, polyethylene oxide (PEO) brush layers as nonfouling