[Increase in asthma prevalence among young children in France].

Introduction: Few data on change over time of asthma prevalence in French children are available.

Methods: Data from the 2012-2013 national health survey of schoolchildren conducted in a random sample of almost 20,000 children in the last year of nursery school were compared to those which had been collected in 2005-2006 in the same grade level using the same methodology.

Results: In the 2012-2013 survey, children had a lifetime prevalence of asthma of 11.

Quantitation of C2 by rocket immunoelectrophoresis in 120 pathological sera.

A potent monospecific anti-C2 was used for quantitation of serum C2 by rocket immunoelectrophoresis (RIE). This ready procedure was compared to the one-step hemolytic titration utilizing C2-deficient human serum. RIE detected 4 nanograms C2 in 5 microliters samples.

[Evaluation of C3d in primitive chronic glomerular nephritis (author's transl)].

Plasma levels of C3d, which is liberated by enzymatic cleavage of C3, are determined in 97 patients with primitive chronic glomerular nephritis. This level is indicative of an abnormally high consumption of C3. In all cases where C3 is low, C3d is found at abnormally high levels.