Update on pollen-food allergy syndrome

Area of Science:

• Allergy and Immunology
• Environmental Health
• Food Science

Background:

• Allergies impact 20-30% of the population, with pollen causing most respiratory allergies.
• Food allergies affect 1-5% of people, and pollen-food allergy syndrome (PFAS) is increasingly reported.
• PFAS symptoms are expanding beyond respiratory to gastrointestinal and severe anaphylactic reactions.

Purpose of the Study:

• To review clinical data on pollen-food allergy syndrome (PFAS).
• To discuss symptoms, diagnosis, and management of PFAS.
• To highlight key allergen families involved in PFAS and explore contributing environmental factors.

Main Methods:

• Review of peer-reviewed articles in PubMed.
• Analysis of clinical data including symptoms, diagnosis, and management.
• Emphasis on specific allergen families (PR10, profilins, LTPs, etc.) and novel contributors (oleosins, polygalacturonases).

Main Results:

• Thirty to 60% of food allergies are linked to pollen allergies.
• The prevalence of pollen allergies associated with food allergies varies geographically and by diet.
• Environmental stress on pollen and food sources increases pathogenesis-related proteins, potentially exacerbating PFAS.

Conclusions:

• PFAS is a growing concern with diverse clinical presentations.
• Understanding allergen families and environmental impacts is crucial for managing PFAS.
• Further research into environmental factors influencing allergenicity is warranted.