Upregulation of vitamin D binding protein (Gc-globulin) binding sites during neutrophil activation from a latent reservoir in azurophil granules.

Evidence for a Chondroitin Sulfate on the Neutrophil Plasma Membrane: Binding Protein (Gc-Globulin) Binding Site Initial Characterization of the Vitamin D

The vitamin D axis in the lung: a key role for vitamin D-binding protein.

There has been much recent interest in the role of the vitamin D axis in lung disease, which includes vitamin D, vitamin D receptor (VDR) and vitamin D-binding protein (VDBP; also known as Gc-globulin). VDBP is a serum protein which has immunomodulatory functions relevant in the lung, predominantly relating to macrophage activation and neutrophil chemotaxis. Variations within its gene are also ...

Gc-globulin (vitamin D-binding protein) enhances the neutrophil chemotactic activity of C5a and C5a des Arg.

Several serum proteins have been shown to be important in modulating leukocyte chemotaxis and inflammation. We investigated the possibility that the multifunctional serum protein Gc-globulin (vitamin D-binding protein) may also enhance the neutrophil chemotactic activity of complement-derived peptides. Purified Gc-globulin by itself did not induce chemotaxis of human neutrophils. However, as li...

Gc-globulin: roles in response to injury.

BACKGROUND Gc-globulin (vitamin D-binding protein) appears to have important functions in addition to its role as a carrier of vitamin D. APPROACH We reviewed recent studies focusing on the pathophysiologic functions and clinical significance of Gc-globulin. RESULTS Serum concentrations of Gc-globulin, as determined by immunoassay techniques, are decreased in severe injury. The extent of th...

Demonstration of ricin-binding sites on the outer face of azurophil and specific granules of rabbit polymorphonuclear leukocytes

The presence of carbohydrate residues on the outer surface of PMN granules has been demonstrated by the use of ricin-conjugated ferritin. The binding of the lectin was inhibited by alpha-lactose. No difference in the binding densities of azurophil or specific granules was observed.