Abstract:
:Specific immunotherapy consists of the administration of allergen extracts to patients with allergic disease to achieve clinical tolerance to the causative allergens. Currently, it is the only etiologic treatment for respiratory allergy. A World Health Organization opinion paper published in 1997 defines immunotherapy as "the only form of treatment able to modify the natural course of allergic diseases". In patients with allergic rhinitis, several studies suggest that immunotherapy can modify the natural history of respiratory allergy by preventing the development of asthma in children with this disease. Numerous studies demonstrate its efficacy in IgE-mediated asthma and particularly in mild-to-moderate asthma. When complete avoidance of the allergen cannot be achieved with measures that allow the patient to lead a normal life, pharmacological treatment can help to control symptoms, but symptoms immediately return when treatment is interrupted. However, asthma care can be improved by allergen-specific treatment; immunotherapy may shift the immune response from an allergic pattern toward a more protective response, producing persistent improvement with reduction of symptoms and the need for pharmacological treatment. Numerous comparative studies with specific immunotherapy vs. placebo or pharmacological treatment have demonstrated the efficacy of this treatment and its advantages in control of the disease. Specific immunotherapy induces favorable clinical, biological and functional modifications in the course of allergic asthma. Significant improvement in clinical manifestations has been demonstrated, even with levels of allergen exposure higher than those at the beginning of treatment. This improvement is associated with a reduced need for antiinflammatory and bronchodilator treatment. Moreover, specific bronchial reactivity shows a clear improvement with disappearance of delayed response and a clear increase in the threshold for immediate response to the allergen. Reduction in nonspecific bronchial hyperreactivity and improvement in exercise-induced asthma are also observed. Several studies recommend an optimal duration of specific immunotherapy for allergic asthma of between 3 and 5 years to achieve maximal therapeutic efficacy. A direct relationship between treatment duration and the persistence of its effects has been observed. Moreover, the treatment is more effective when started early. The possible adverse effects related to systemic reactions should be borne in mind. Although these effects are infrequent, maximal precautions should be taken when administering this treatment. Immunotherapy is contraindicated in cases of severe asthma, heart disease, autoimmune disease and associated severe neoplastic processes. However, all the beneficial effects of immunotherapy are conditioned by an accurate and early etiological diagnosis confirming the causative allergen. The availability of high-quality allergen extracts is essential to obtain the desired effect. Inappropriate patient selection for this treatment is the main cause of its failure. The integral treatment of allergic asthma includes environmental measures, patient education, pharmacological treatment and, whenever possible, immunotherapy.
journal_name
Allergol Immunopathol (Madr)journal_title
Allergologia et immunopathologiaauthors
Martín Muñoz MFdoi
10.1016/s0301-0546(04)79300-3keywords:
subject
Has Abstractpub_date
2004-05-01 00:00:00pages
133-41issue
3eissn
0301-0546issn
1578-1267pii
13060597journal_volume
32pub_type
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journal_title:Allergologia et immunopathologia
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journal_title:Allergologia et immunopathologia
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更新日期:1996-05-01 00:00:00
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journal_title:Allergologia et immunopathologia
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更新日期:1992-09-01 00:00:00
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journal_title:Allergologia et immunopathologia
pub_type: 杂志文章,评审
doi:
更新日期:1997-09-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2012-09-01 00:00:00
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journal_title:Allergologia et immunopathologia
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journal_title:Allergologia et immunopathologia
pub_type: 杂志文章
doi:
更新日期:1995-07-01 00:00:00
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journal_title:Allergologia et immunopathologia
pub_type: 杂志文章
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更新日期:1996-07-01 00:00:00
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journal_title:Allergologia et immunopathologia
pub_type: 杂志文章
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更新日期:1985-05-01 00:00:00
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journal_title:Allergologia et immunopathologia
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journal_title:Allergologia et immunopathologia
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journal_title:Allergologia et immunopathologia
pub_type: 杂志文章,多中心研究
doi:
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