Immunoglobulin E (IgE) Regulation and Biology

immunoglobulin e
Normally present at very low levels in plasma, antibodies of the immunoglobulin E (IgE) isotype were first discovered in 1967, decades after the description of IgA, IgG, and IM. IgE antibodies are produced primarily by plasma cells in mucosal-associated lymphoid tissue and their levels are uniformly elevated in patients suffering from atopic conditions like allergic rhinitis, asthma and atopic dermatitis. Production of allergen-specific IgE in atopic individuals is driven both by a genetic predisposition to the synthesis of this isotype as well as by environmental factors, including chronic allergen exposure. (more…)

Tumour Necrosis Factor Alpha in Symptomatic Corticosteroid-Dependent Asthma

Tumour Necrosis Factor Alpha
Tumour necrosis factor alpha (TNF-a) is a major therapeutic target in a range of chronic inflammatory disorders involving neutrophils and its excess production is characterized by a Th1-type immune response. Asthma is regarded as a Th2-type disorder when associated with atopy, (more…)

Allergic Rhinitis Asthma Symptoms and Syndrome

Allergic Rhinitis Asthma
Allergic rhinitis is a high-prevalence disease. This high prevalence translates into a high cost to society in terms of overall healthcare utilization, and also a high cost in terms of the quality of life of those who suffer from moderate or severe disease.

Allergic rhinitis has traditionally been divided into seasonal allergic rhinitis (SAR) and perennial allergic rhinitis (PAR). This classification is helpful in indicating the season of maximum symptoms and the likely causative allergens immunotherapy. (more…)

Omalizumab Treatment, A Humanized Monoclonal Anti-Ige Antibody, On Nasal Reactivity To Allergen And Local Ige Synthesis

Treatment with omalizumab has been shown to reduce serum free IgE concentrations and to have beneficial effects on allergic airway disease. However, its effect on local IgE synthesis is unknown. The authors investigated whether omalizumab therapy diminishes nasal reactivity to allergen and local IgE production. Nineteen patients with perennial allergic rhinitis were treated with intravenous omalizumab every 2 weeks for 26 weeks in an open-label study. (more…)