Book contents
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Asthma and COPD
- 1 Pathology of asthma and COPD: inflammation and structure
- 2 Glucocorticosteroids
- 3 β2-adrenoceptor agonists
- 4 Anticholinergic bronchodilators
- 5 Antiallergic drugs
- 6 Drugs affecting the synthesis and action of leukotrienes
- 7 Theophylline and selective phosphodiesterase inhibitors in the treatment of respiratory disease
- 8 Potential therapeutic effects of potassium channel openers in respiratory diseases
- 9 Tachykinin and kinin antagonists
- 10 Drugs affecting IgE (Synthesis inhibitors and monoclonal antibodies)
- 11 Drugs targeting cell signalling
- Part II Diffuse parenchymal lung disease
- Part III Infection
- Part IV Pulmonary vascular diseases
- Part V Lung cancer
- Part VI Cough
- Index
10 - Drugs affecting IgE (Synthesis inhibitors and monoclonal antibodies)
from Part I - Asthma and COPD
Published online by Cambridge University Press: 15 August 2009
- Frontmatter
- Contents
- List of contributors
- Preface
- Part I Asthma and COPD
- 1 Pathology of asthma and COPD: inflammation and structure
- 2 Glucocorticosteroids
- 3 β2-adrenoceptor agonists
- 4 Anticholinergic bronchodilators
- 5 Antiallergic drugs
- 6 Drugs affecting the synthesis and action of leukotrienes
- 7 Theophylline and selective phosphodiesterase inhibitors in the treatment of respiratory disease
- 8 Potential therapeutic effects of potassium channel openers in respiratory diseases
- 9 Tachykinin and kinin antagonists
- 10 Drugs affecting IgE (Synthesis inhibitors and monoclonal antibodies)
- 11 Drugs targeting cell signalling
- Part II Diffuse parenchymal lung disease
- Part III Infection
- Part IV Pulmonary vascular diseases
- Part V Lung cancer
- Part VI Cough
- Index
Summary
It is now well recognized that IgE plays a key role in the sequence of cellular events leading to an allergic reaction such as occurs in allergic rhinitis and asthma. Various strategies have been attempted to interfere with the IgE-dependent activation of mast cells and basophils, including trying to find antagonists to block the interaction between IgE and its high affinity receptor FcεRI. However, the affinity of IgE for FcεRI is extremely high, of the order of 1010–1012/mol/l. For any drug to compete with IgE it would have to interact with FcεRI with comparable affinity: it is not surprising that this has been difficult to achieve and no such drugs have yet been described.
An alternative approach would be to decrease the level of IgE available to interact with FcεRI. This rationale is supported by evidence that serum levels of IgE have been reported to correlate with the severity of allergic symptoms, including in allergic asthma. At the cellular level, the amount of IgE bound to FcεRI on human basophils correlates closely with serum levels of IgE. However, cell sensitivity to receptor cross-linking is influenced also by intracellular pathways such that in vitro the extent of mediator release appears to be independent of the number of IgE molecules per basophil. Also, cross-linking of only a small number of IgE receptors (relative to the total available) is sufficient to stimulate secretion.
- Type
- Chapter
- Information
- Drugs for the Treatment of Respiratory Diseases , pp. 195 - 217Publisher: Cambridge University PressPrint publication year: 2003