Immunoglobulin A (IgA) deficiency occurs more frequently in patients with celiac disease (CD) than in the general population and can lead to false-negative results in the best serologic test for CD, endomysial IgA (EMA). To evaluate the impact of IgA deficiency on serologic detection of CD in a reference laboratory setting, IgA levels were measured in 510 consecutive serum specimens submitted f...

BACKGROUND Diabetes mellitus is a common immune mediated disorder. The aim of the present study is to evaluate the level of serum and salivary IgA levels in patients with Type 1 diabetes. MATERIAL AND METHOD In this case control study, serum and salivary IgA levels of patients with diabetes type 1 and similar non diabetes subjects were measured. Age, gender, duration of diabetes and the last ...

IgA is one of the five classes of immunoglobulin found in biological fluids. It is the major secretory immunoglobulin and is widely distributed in all mucosal secretions as a dimeric molecule linked by a joining chain and a third molecule, the secretory piece. The dimeric form is resistant to proteolytic digestion and IgA antibodies are important in the protection of mucous membranes against in...

IgA is one of the five classes of immunoglobulin found in biological fluids. It is the major secretory immunoglobulin and is widely distributed in all mucosal secretions as a dimeric molecule linked by a joining chain and a third molecule, the secretory piece. The dimeric form is resistant to proteolytic digestion and IgA antibodies are important in the protection of mucous membranes against in...

Primary immunodeficiencies are inherited disorders of the immune system, with an estimated prevalence of 1:500 in the USA. Yet, a majority of the patients are still undiagnosed. Most patients with a diagnosis come in contact with the healthcare due to complications caused by the immunological defects. In many cases, it is crucial that the patients receive treatment before their health is seriou...

Despite our knowledge on the role of IgA in mucosal homeostasis and host defense and clinical evidence suggesting deficient first-line defense mechanisms in chronic airway disorders, little is known regarding its role in asthma and chronic obstructive pulmonary disease (COPD). Studies suggest that the mucosal IgA response is impaired in COPD, and a deficient transport of IgA across the bronchia...

Most patients with IgA and/or IgG subclass deficiency are asymptomatic but some may suffer from frequent mainly respiratory infections. The aim of our study was to determine the frequency of IgA and/or IgG subclass deficiencies and the rate of chronic pulmonary damage secondary to recurrent pulmonary infections in these children. Serum IgA and IgG subclass levels were measured in 225 children a...

FIRST REPORT: male child with repeated pulmonary infections from the age of 4 months. He was diagnosed as IgA deficiency (undetectable IgA levels) at the age of 3 years, when he presented repeated bouts of pneumonia and tonsillitis. Several immunologic evaluations were made between the ages of 4 months and 8 years. At 8 years and 9 months, the diagnosis of IgA deficiency was confirmed, and asso...