DEFECTIVE ACTIVATION OF THE TERMINAL COMPLEMENT '(c') COMPONENTS IN NEWBORN SERA
نویسندگان
چکیده
منابع مشابه
Role of the Terminal Complement Components
The mechanisms of the complement-mediated myocardial injury associated with ischemia and reperfusion have not been elucidated fully. Complement activation may directly mediate injury through actions of the anaphylatoxins C3a and C5a or generation of the membrane attack complex C5b-9. A model was developed to examine the direct effects of complement activation on heart function, assess myocardia...
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Using specific immune sera, C7, C9, and C3 activator were detected in sera from human fetuses more than 16 weeks old and in newborn samples. Levels of C9 in cord sera ranged between 10 and 30% of those present in sera from adult subjects. The mean value of Ce activator was about half that in maternal blood. The mean level of C7 in newborns was nearly 70% of the amount in normal adults.
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Purpose Circulating immune complexes (CICs) from juvenile idiopathic arthritis (JIA) sera have been shown to contain bound complement components; however, whether the classical or alternative pathway is the main pathway involved remains undetermined. To delineate the role of these pathways in the disease process, we measured activated complement products bound to CICs in sera from 100 JIA patie...
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15 صفحه اولBreakdown of C 3 after Complement Activation
The reaction mechanisms of C3 are central to both the classical and alternative pathways of complement activation and have in consequence been extensively studied (see 1 and 2 for reviews). The activation of C3 by cleavage to C3b is brought about by the C3-converting enzymes of the classical and alternative pathways, as well as by a number ofnoncomplement enzymes. C3b is subsequently inactivate...
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ژورنال
عنوان ژورنال: Pediatric Research
سال: 1977
ISSN: 0031-3998,1530-0447
DOI: 10.1203/00006450-197704000-00760