Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0432222 (SEM)
 47,337 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Neutrophil peptide, also called defensin, is an antimicrobial peptide localized in azurophil granules in neutrophils. Using a synthetic human neutrophil peptide-1 (HNP-1), we prepared an antiserum against the peptide and established a highly sensitive radioimmunoassay (RIA). This RIA equally recognized HNP-1, -2, and -3 on a molar basis. Analyses of leukocyte and blood extracts obtained from normal individuals and patients with bacterial infection by reverse-phase high-performance liquid chromatography coupled with the RIA showed that the antiserum specifically detected HNP molecules. Concentrations of HNP 1-3 in total in normal human blood and plasma are 13.2 +/- 1.4 (mean +/- SEM) ng/mu 1 and 403.8 +/- 38.9 pg/mu 1, respectively. The values increased in infection and returned to within the normal levels after the recovery of the disorder. Granulocyte colony-stimulating factor (G-CSF) increased the plasma and blood concentrations of HNP 1-3. The RIA established here provides a useful tool to elucidate the pathophysiological significance of HNP and to evaluate the neutrophil functions in infection and inflammation.
 ...
PMID:Establishment of radioimmunoassay for human neutrophil peptides and their increases in plasma and neutrophil in infection. 821 66