Humoral deficiencies represent a broad group of disorders. The aim of the study was to compare the levels of antibodies against pneumococcal capsular polysaccharides (anti-PCP) and natural anti-galactosyl (anti-Gal) antibodies in (1) patients with chronic lymphocytic leukaemia (CLL), (2) patients with common variable immunodeficiency (CVID), and (3) a healthy population and to explore their dia...

background : there is an association   of celiac disease (cd) with several gastrointestinal illnesses. we aimed to determine   the prevalence of cd in patients with inflammatory bowel disease (ibd) to evaluate the value of the routine serological tests for cd in these patients. methods : patients with ibd underwent   screening test for cd. the screening test was based on iga anti-ttg antibody e...

Although severe reactions to immunoglobulin preparations have been frequently reported, IgE antibodies against IgA are usually not investigated; and occur predominantly in previously sensitized patients. The purpose is to report anaphylaxis to IGIV during initial infusion in a patient with common variable immunodeficiency with absent IgA without prior sensitization and in the absence of detecta...

Dear Editor-in-Chief, I read with great interest the recently published article by Nasri H. entitled “IgG deposition in IgA nephropathy patients” in the esteemed Journal of Renal Injury Prevention. In this study on 114 biopsies of IgA nephropathy (IgAN) patients they found no significant association of IgG deposits with age. There was no correlation of IgG deposit with four morphologic variable...

We have created J chain knockout mice to define the physiologic role of the J chain in immunoglobulin synthesis and transport. The J chain is covalently associated with pentameric immunoglobulin (Ig) M and dimeric IgA and is also expressed in most IgG-secreting cells. J chain-deficient mice have normal serum IgM and IgG levels but markedly elevated serum IgA. Although polymeric IgA was present ...

The cross-linking of the IgA Fc receptor (FcαRI) by IgA induces release of the chemoattractant LTB4, thereby recruiting neutrophils in a positive feedback loop. IgA autoantibodies of patients with autoimmune blistering skin diseases therefore induce massive recruitment of neutrophils, resulting in severe tissue damage. To interfere with neutrophil mobilization and reduce disease morbidity, we d...

BACKGROUND We prospectively evaluated the usefulness of IgA tissue transglutaminase antibodies (IgA tTG) in the initial diagnosis of celiac disease (CD) and compared its diagnostic potential with that of IgA anti-endomysial antibodies (IgA EMA) and anti-IgA and IgG gliadin antibodies (AGA and AGG, respectively). METHODS Sera of 23 untreated children fulfilling the revised ESPGHAN criteria for...

background: allergic rhinitis (ar) is an allergic disorder of the nasal tissue that underlies diseases such as sinusitis, otits and asthma. different predisposing factors including immunological and non-immunological factors contribute to the disease pathogenesis. objective: to investigate association of haptoglobin (hp) phenotypes (hp1-1, 2-1 and 2-2) with serum immunoglobulins a and e levels ...

Plasma IgA level of Ehrlich ascites tumor bearing mice showed correlation with progress of tumor growth. In PAGE analysis total plasma IgA separated into 3 major bands corresponding to mol. wt. > or = 669,000 daltons, identical to 443,000 daltons and between 443,000 and 150,000 daltons. All the three bands increased gradually with progress of tumor growth upto day 14 and then declined on day 16...