The eosinophil and the eye
S Bonini1, L Magrini, G Rotiroti
1Second University of Naples, Italy.
Allergy
|January 1, 1997
Summary
Eosinophils play a key role in allergic eye diseases like vernal keratoconjunctivitis (VKC). Targeting eosinophil functions is crucial for developing effective anti-allergic treatments for eye conditions.
Area of Science:
- Ophthalmology
- Allergology
- Immunology
Background:
- Allergic eye diseases involve eosinophil involvement.
- Vernal keratoconjunctivitis (VKC) and hay fever conjunctivitis are common forms.
- Eosinophils are implicated in the pathophysiology of these conditions.
Purpose of the Study:
- To review the role of eosinophils in allergic eye diseases.
- To investigate the modulatory effects of cetirizine on allergic reactions and eosinophil activation.
- To highlight the importance of evaluating eosinophil function in anti-allergic drug development.
Main Methods:
- Analysis of conjunctival biopsies for eosinophil presence and distribution.
- Measurement of eosinophil products (e.g., ECP) in tears.
- Assessment of circulating eosinophil activation markers and serum levels of eosinophil mediators.
- Clinical study using conjunctival allergen challenge to evaluate drug effects.
Main Results:
- Increased eosinophils in conjunctival biopsies of VKC patients.
- Elevated eosinophils and ECP in tears of VKC patients and during late-phase reactions in hay fever.
- Activated circulating eosinophils and increased serum eosinophil mediators in VKC patients.
- Cetirizine demonstrated modulatory effects on allergic reactions and eosinophil recruitment.
Conclusions:
- Eosinophils are central to allergic eye disease pathogenesis.
- Evaluating eosinophil function is essential for assessing anti-allergic drugs.
- Drugs targeting eosinophil functions hold promise for treating allergic eye conditions.
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