IgG subclass deficiency.

IgG subclass deficiency in asthma.

Total immunoglobulin G (IgG) and subclasses were measured in serum samples from 82 children with chronic asthma, aged 1.5 to 6.3 years, and 76 controls. Concentrations of IgG1, IgG2, IgG3, and total IgG were significantly lower in asthmatic children aged 1 to 5, and IgG2 concentrations were also significantly lower in asthmatic children over 5 years of age. Twenty eight asthmatic children had a...

Clinical significance of IgG subclass deficiency.

Immunoglobulin G (IgG) subclass deficiency in Thai children.

BACKGROUND Patients with Immunoglobulin G (IgG) subclass deficiency may suffer from recurrent infections, mainly sino-pulmonary infection. OBJECTIVE To determine the epidemiology of IgG subclass deficiency in Thai children at a tertiary care hospital and to compare the differences between children who were diagnosed with IgG subclass deficiency by using low level criteria [less than 2 standar...

IgG subclass deficiency associated with corticosteroids in obstructive lung disease.

IgG subclass levels were measured in three groups of adult patients with obstructive airways disease to discern the relationships among depressed IgG subclass levels, chronic corticosteroid use, and recurrent sinopulmonary infections. Group 1 consisted of patients with corticosteroid-dependent bronchial asthma, group 2 patients had corticosteroid-dependent chronic bronchitis/emphysema, and grou...

Evolution of IgA deficiency to IgG subclass deficiency and common variable immunodeficiency.

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...