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  • Title: [Elastase-alpha 1-proteinase inhibitor complex (E alpha 1 PI) and lactoferrin plasma concentrations in viral and bacterial infections].
    Author: Tegtmeyer FK, Maacks S, van Wees J, Wood WG.
    Journal: Monatsschr Kinderheilkd; 1991 Feb; 139(2):96-101. PubMed ID: 2038354.
    Abstract:
    Typical alterations of the white blood cell count are often missed during the acute course of infectious diseases. Activiation and degranulation of granulocytes are followed by elevation of E alpha 1 PI and lactoferrin plasma concentrations under these conditions. The aim of our study was the evaluation of the diagnostic significance of these granulocyte parameters in relation with the absolute granulocyte count in infected pediatric patients. A total number of 106 patients at the age of 1 day to 16 years were studied. 25 children suffered from viral, 26 from localized and 23 from systemic bacterial infections, 32 children exhibiting no signs of infection served as controls. Results of the study are given as medians and ranges. Total granulocyte count was elevated above controls (4.8; 2.2-12.7/nl) only in patients with localized bacterial infections (13.3; 5.5-36.5/nl). E alpha 1 PI and lactoferrin plasma concentrations correlated well (r = 0.72) and were found to be significantly elevated in patients with localized bacterial infections (856; 363-4820 micrograms/l and 748; 206-2078 micrograms/l) and septicemia respectively (661; 256-2078 micrograms/l and 871; 160-9550 micrograms/l). A clearcut differentiation of septic and locally infected patients was given by the ratio of E alpha 1 PI and total granulocyte counts. Significantly elevated E alpha 1 PI concentrations of patients exhibiting viral infections (295; 86-690 micrograms/l) may suggest effective granulocyte activation under this condition. Finally we conclude that E alpha 1 PI and lactoferin plasma concentration related to total granulocyte counts in infected patients may serve as a helpful indicator of granulocyte activation during the acute course of the disease.
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