Anaphylaxis caused by tomato lipid transfer protein

Area of Science:

• Food allergy research
• Immunology
• Clinical case reports

Background:

• Lipid transfer proteins (LTPs) are common allergens, particularly in fruits and vegetables.
• Tomato allergy is less common but can cause significant reactions.
• Understanding cross-reactivity is crucial for diagnosing and managing food allergies.

Observation:

• A patient presented with an unusual case of anaphylaxis.
• The anaphylaxis was determined to be induced by tomato consumption.
• In-vitro inhibition studies were performed to investigate the allergen.

Findings:

• Complete cross-reactivity was observed between the tomato allergen and purified peach lipid transfer protein (LTP).
• The results indicate that tomato LTP is the likely causative agent in this case.
• Tomato LTP can elicit severe allergic responses.

Implications:

• This case expands the known spectrum of allergens causing anaphylaxis.
• It underscores the importance of considering LTP cross-reactivity in patients with suspected tomato allergy.
• Further research into tomato LTP allergenicity is warranted for improved clinical management.