ISSN:
1573-2592
Keywords:
Anti-IgA antibodies
;
IgA nephropathy
;
immune complexes
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract The concentrations of serum IgG and IgM antibodies to polyclonal IgA (IgAp), IgA1, and IgA2 were determined by enzyme immunoassay in 31 patients with IgA nephropathy and 30 healthy controls. Patients with IgA nephropathy had significantly raised concentrations of serum IgA compared to controls (Mann-WhitneyU test,P=0.001) and increased concentrations of conglutinin-binding IgA immune complexes (P=0.024). No differences in the median concentrations of IgG and IgM anti-IgA antibodies were found between the patients and the controls. In serum samples from healthy controls there was a significant positive correlation between IgM anti-IgAp and IgA immune complex concentrations (P=0.05), which contrasted with the finding of an inverse correlation between IgM anti-IgAp and IgA immune complex concentrations in patients with IgA nephropathy (P〈0.05). In addition, the concentrations of conglutinin binding IgM immune complexes in serum were found to correlate with the concentration of IgM anti-IgAp (0.010〈P〈0.025), IgM anti-IgA1, and IgM anti-IgA2 (P«0.005 for both) in patients with IgA nephropathy but not in controls. IgM anti-IgA antibodies may be important in augmenting the clearance of IgA immune complexes from the serum of patients with IgA nephropathy.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00918662
Permalink
