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  • Title: Radiographic contrast media and release of neutrophil specific proteins in vitro and after intravenous injection.
    Author: Rasmussen F, Antonsen S, Georgsen J, Christensen JK.
    Journal: Acta Radiol; 1992 Sep; 33(5):495-9. PubMed ID: 1389663.
    Abstract:
    The neutrophil granulocytes contain granules in which different proteins are present. When activated the neutrophils degranulate and thereby release some of these proteins to the surroundings. Some of these proteins are specific for this type of cell, e.g., lactoferrin and elastase. To investigate the influence of contrast media (CM) on this release, blood was incubated with diatrizoate, ioxaglate, iohexol, iodixanol, hyperosmolar saline, and hyperosmolar mannitol at different concentrations, and the amount of the neutrophil specific proteins lactoferrin and elastase were measured. Decreasing protein concentrations were observed for increased medium concentrations, suggesting that the degranulation process of the neutrophils was inhibited by the CM. The protein concentrations were lowest after incubation with the two ionic media diatrizoate and ioxaglate. Significantly decreased values of plasma lactoferrin were observed one min after i.v. injection of iohexol or ioxaglate in 82 patients undergoing urography. There was no significant difference between the two CM.
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