Abstract:
:Human phospholipase B-precursor (PLB-P) is a newly identified and purified protein from human neutrophils. The precise function of PLB-P in vivo is not yet known. Its existence in neutrophils and the enzymatic activity against phospholipids imply a role in the defence against invading microorganisms and in the generation of lipid mediators of inflammation. We describe here the generation of specific antibodies against PLB-P, the tissue localizations of PLB-P and the establishment of an accurate, specific, and reproducible radioimmunoassay (RIA). A survey of normal and malignant tissues showed strong immunostaining of PLB-P in neuronal and myeloid cells and in adrenal glands. Elevated levels were found in sera of patients with influenza A infection i.e. >1 microg/L and in gut fluids of patients with inflammatory bowel disease i.e. >20 microg/L. The levels correlated to markers of neutrophil activation, suggesting a neutrophil origin of PLB-P in these conditions. The antibodies and the assay will be useful in the future basic and clinical investigations of PLB-P.
journal_name
J Immunol Methodsjournal_title
Journal of immunological methodsauthors
Xu S,Cai L,Zhao L,Douhan-Håkansson L,Kristjánsson G,Pauksen K,Venge Pdoi
10.1016/j.jim.2010.01.005subject
Has Abstractpub_date
2010-02-28 00:00:00pages
71-7issue
1-2eissn
0022-1759issn
1872-7905pii
S0022-1759(10)00007-4journal_volume
353pub_type
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