ISSN:
1432-1440
Keywords:
Polymorphonuclear leukocytes
;
Chemiluminescence
;
Immune complexes
;
Systemic lupus erythematosus
;
Rheumatoid arthritis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary The generation of chemiluminescence (CL)-detectable oxygen radicals by normal human polymorphonuclear leukocytes (PMN) after challenging with systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA) sera is described. CL was measured in a luminol-dependent assay and referred to a standard obtained when preformed immune complexes (Ic) (human tetanus toxoid-antitoxoid Ic resuspended in normal pooled serum) were tested on PMN. Normal sera gave rise to CL activity by PMN between 0% and 50% of the standard Ic (mean±standard error of the mean (SEM): 20.7±4.8). Sera from SLE and RA patients induced strikingly different biological effects on PMN. SLE sera generally induced a high CL-detectable generation of oxygen metabolites which may be causally related to the intense tissue damage (vasculitis) frequently observed in this disease. In contrast to SLE, RA sera induced a CL-detectable respiratory burst by PMN that was included in the normal range. Thus, the biological effects of these sera in terms of stimulation of toxic oxygen radical generation by phagocytes are quite different. This generation of oxygen radicals might reflect a different clearance of circulating Ic by PMN in SLE and RA disease.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01725703
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