Interaction between iodine and polyvinylpyrrolidone or .ALPHA.-pyrrolidone.

An interaction between zyxin and alpha-actinin

Zyxin is an 82-kD protein first identified as a component of adhesion plaques and the termini of stress fibers near where they associate with the cytoplasmic face of the adhesive membrane. We report here that zyxin interacts with the actin cross-linking protein alpha-actinin. Zyxin cosediments with filamentous actin in an alpha-actinin-dependent manner and an association between zyxin and alpha...

Scientific Committee on Food on the safety of N-vinyl-2-pyrrolidone residues in polyvinylpyrrolidone and polyvinylpolypyrrolidone (insoluble polyvinylpyrrolidone) when used as food additives

Factors Influencing the Interaction Between Radioactive Iodine and Fibrinogen

Radioactive iodine is currently used to label proteins as a method of investigating protein metabolism in vivo or as a tracer for studies in vitro. However, recent observations indicate that changes in the molecular characteristics of proteins after iodination may lead to an apparent increase in the turnover rate in vivo (Regoeczi, 1971 ; Krohn et al., 1972). Incorporation of iodine into protei...

A quantitative approach to the free radical interaction between alpha-tocopherol or ascorbate and flavonoids.

Despite numerous previous studies, the mechanism of the free radical interaction between alpha-tocopherol (VE), or ascorbate and flavonoids, as coantioxidants remains unclear. The synergistic antioxidant effects of VE or L-ascorbyl 2,6-dibutyrate (ASDB, an ascorbate derivative) with the flavonoids (-)-epicatechin (EC), (-)-epigallocatechin (EGC), (-)-epicatechin gallate (ECG) and (-)-epigalloca...

Use of polyvinylpyrrolidone-iodine solution for sterilisation and preservation improves mechanical properties and osteogenesis of allografts

Allografts eliminate the disadvantages associated with autografts and synthetic scaffolds but are associated with a disease-transmission risk. Therefore, allograft sterilisation is crucial. We aimed to determine whether polyvinylpyrrolidone-iodine (PVP-I) can be used for sterilisation and as a new wet-preservation method. PVP-I-sterilised and preserved allografts demonstrated improved mechanica...