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The development of an assay for human neutrophil lipocalin (HNL)--to be used as a specific marker of neutrophil activity in vivo and vitro
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences.
1994 (English)In: Journal of Immunological Methods, ISSN 0022-1759, Vol. 171, no 2, 245-252 p.Article in journal (Refereed) Published
Abstract [en]

Human neutrophil lipocalin (HNL) is a newly discovered protein from human neutrophil secretory granules. A double-antibody radioimmunoassay (RIA) was developed for the measurement of HNL in various body fluids and its high specificity was confirmed by the absence of cross-reaction with other granulocyte granule proteins. The RIA measures HNL within the range of 4-256 micrograms/l. The intra- and interassay coefficients of variation were less than 6% and 10%, respectively. When HNL was added to serum samples full recovery was obtained. Sera and plasma from 100 apparently healthy individuals revealed a mean level of 78.40 micrograms/l (range 37.95-190.87 micrograms/l) in serum and a mean level of 50.65 micrograms/l (range 30.51-105.8 micrograms/l) in EDTA-plasma. The distribution of HNL after gel filtration indicated that HNL exists mainly in two major forms, dimer and monomer. This, in addition to the excellent recovery, suggests that these major forms of HNL do not bind to compounds in serum or plasma that would interfere with the assay. The high specificity, sensitivity, reproducibility and accuracy of the present assay should facilitate the measurement of HNL in blood and other body fluids.

Place, publisher, year, edition, pages
1994. Vol. 171, no 2, 245-252 p.
Keyword [en]
Acute-Phase Proteins, Adult, Biological Markers, Carrier Proteins/*blood/isolation & purification, Female, Humans, Male, Middle Aged, Neutrophils/*chemistry/*physiology/secretion, Oncogene Proteins, Radioimmunoassay/methods, Reproducibility of Results, Research Support; Non-U.S. Gov't, Sensitivity and Specificity
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-74320DOI: 10.1016/0022-1759(94)90044-2PubMedID: 8195592OAI: oai:DiVA.org:uu-74320DiVA: diva2:102230
Available from: 2005-09-21 Created: 2005-09-21 Last updated: 2010-06-04Bibliographically approved

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Xu, S YCarlson, MVenge, P

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