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Local intranasal immunotherapy with high-dose polymerized ragweed extract.
International Archives of Allergy and Applied Immunology
|January 1, 1986
Summary
Local intranasal immunotherapy (LNIT) using high-dose polymerized ragweed extract effectively reduced nasal allergy symptoms like sneezing and congestion. This safe and simple treatment shows promise for ragweed allergy relief.
Area of Science:
- Allergy and Immunology
- Otolaryngology
Background:
- Ragweed allergy affects a significant portion of the population, leading to considerable morbidity.
- Current immunotherapy options may have limitations in terms of efficacy or side effect profiles.
Purpose of the Study:
- To evaluate the safety and efficacy of high-dose local intranasal immunotherapy (LNIT) with polymerized ragweed extract for ragweed allergy.
Main Methods:
- Thirty-one ragweed-allergic patients underwent preseasonal LNIT with high doses of polymerized ragweed extract.
- Symptom scores, eye symptoms, and specific IgA, IgG, and IgE antibody levels were compared to an untreated control group.
Main Results:
- LNIT treatment was well-tolerated with minimal side effects.
- Treated patients reported significantly lower scores for sneezing, rhinorrhea, and nasal congestion compared to controls.
- No significant difference was observed in eye symptoms between groups.
- Elevated secretory ragweed-specific IgA and IgG were noted post-treatment, but did not correlate with clinical improvement.
- LNIT did not prevent the seasonal increase in serum ragweed-specific IgE.
Conclusions:
- High-dose LNIT with polymerized ragweed extract is a safe, simple, and effective immunotherapy option for reducing key nasal symptoms of ragweed allergy.
- Further research may be needed to fully elucidate the mechanisms of clinical improvement and the role of specific antibody responses.