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Basophil Activation Test for Allergy Diagnosis
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Diagnosing Meat Allergy After Tick Bite Without Delay.

Adam C Kaplan1, Michael P Carson2

  • 1From Jersey Shore University Medical Center, Neptune, NJ (ACK, MPC). Adam.Kaplan@hackensackmeridian.org.

Journal of the American Board of Family Medicine : JABFM
|July 11, 2018
PubMed
Summary
This summary is machine-generated.

Lone Star tick bites can cause severe allergic reactions to mammalian meat by inducing galactose-alpha-1,3-galactose (α-gal) antibodies. This case highlights the importance of considering tick exposure in diagnosing meat allergies.

Keywords:
AngioedemaCetuximabFood HypersensitivityGalactosyl-(1–3)galactoseMeatSoutheastern United StatesTick Bites

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Area of Science:

  • Immunology
  • Allergology
  • Epidemiology

Background:

  • Galactose-alpha-1,3-galactose (α-gal) is a carbohydrate epitope found in mammalian meat.
  • Elevated α-gal antibodies were linked to hypersensitivity reactions in patients treated with cetuximab.
  • Geographic clustering of cases in the Southeastern US suggested an environmental trigger, like tick bites.

Observation:

  • A case of delayed urticarial angioedema due to mammalian meat allergy is presented.
  • The allergy was attributed to α-gal immunoglobulin E (IgE) acquired following tick exposures.
  • The patient experienced symptoms after consuming mammalian meat.

Findings:

  • Tick bites, specifically from the Lone Star tick, can induce the production of α-gal IgE antibodies.
  • This immune response leads to allergic reactions upon subsequent exposure to mammalian meat.
  • The geographic distribution of cases aligns with the habitat of the Lone Star tick.

Implications:

  • Clinicians in tick-prevalent areas should consider tick-induced α-gal allergy in patients with unexplained meat allergies.
  • Patient education on preventing recurrences is crucial.
  • Understanding this link is vital for diagnosing and managing allergic reactions to mammalian meat.