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Updated: Jul 16, 2025

Zebrafish Animal Model for the Study of Allergic Reactions in Response to Tick Saliva Biomolecules

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Published on: September 16, 2022

High-risk groups for alpha-gal sensitization.

Marie Benders-Guedj¹, Martin Köberle¹, Heidelore Hofmann¹

¹Department of Dermatology and Allergy Biederstein, Faculty of Medicine, Technical University of Munich, Munich, Germany.

Allergologie Select

|September 14, 2023

Summary

This summary is machine-generated.

Frequent tick bites increase the risk of galactose α-1,3-galactose (alpha-gal) sensitization, particularly in hunters and forest workers. This sensitization, linked to IgE antibodies, may have existed for decades.

Keywords:

alpha-gal sensitization borreliosis tick contact

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Area of Science:

Immunology
Allergology
Epidemiology

Background:

Tick bite-induced IgE-mediated reactions to galactose α-1,3-galactose (alpha-gal) are a growing concern.
This study investigated alpha-gal sensitization across different tick bite exposure levels.

Purpose of the Study:

To assess alpha-gal sensitization prevalence in patients with Lyme borreliosis and compare it to controls.
To evaluate alpha-gal sensitization in individuals with high tick exposure, such as hunters and forest workers.

Main Methods:

Specific IgE (sIgE) antibodies to alpha-gal and total IgE were measured in 485 Lyme borreliosis patients and 200 controls.
A cohort of 232 hunters and forest workers with presumed frequent tick bites was also analyzed.

Main Results:

Alpha-gal sIgE was found in 12.6% of borreliosis patients versus 9% in controls (not significant).
Hunters and forest workers exhibited a significantly higher prevalence of alpha-gal sIgE (22.8%, p < 0.001).
Higher age and elevated total IgE correlated with alpha-gal sensitization.

Conclusions:

Tick-exposed individuals, especially those with borreliosis, show a trend towards higher alpha-gal sensitization.
Frequent tick contact is a likely driver of alpha-gal sensitization.
Prevalence in Munich appears lower than in other regions, possibly due to tick species or exposure frequency; alpha-gal sensitization is not a new phenomenon.