Immunochemical characterization of cocos nucifera pollen

Area of Science:

• Allergy and Immunology
• Biochemistry
• Proteomics

Background:

• Cocos nucifera pollen is a known allergen triggering immediate hypersensitivity reactions.
• Accurate diagnosis and immunotherapy require detailed characterization of pollen allergens.

Purpose of the Study:

• To identify and characterize the allergenic components within Cocos nucifera whole pollen extract (WPE).
• To establish reference patterns for Cocos nucifera WPE for standardization in clinical applications.

Main Methods:

• Fractionation of C. nucifera WPE using gel filtration and ion-exchange chromatography (Fast Protein Liquid Chromatography).
• Assessment of allergenic properties via skin prick tests, bronchial provocation tests, IgE ELISA, and immunoblot analysis.
• RAST inhibition assays to determine the potency of individual allergen fractions.

Main Results:

• Three allergenic protein fractions (Cocos II, Cocos VI, Cocos VII) were identified.
• Cocos IIa, a high-molecular-weight protein, was the most potent allergen.
• Cocos VI and Cocos VII, low-molecular-weight proteins, also demonstrated significant allergenic activity.

Conclusions:

• Specific protein fractions of C. nucifera pollen have been identified as key allergens.
• Standardized Cocos nucifera WPE can be developed for improved diagnosis and immunotherapy of coconut pollen allergy.