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Allergic Reactions: Anaphylaxis01:30

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Anaphylaxis is a severe, life-threatening hypersensitivity reaction mediated by Immunoglobulin E (IgE) antibodies. When IgE binds to allergens, it triggers the release of mediators– histamine, leukotrienes, and prostaglandins from mast cells and basophils. These mediators cause vasodilation, edema, and inflammation, leading to various symptoms.The primary allergens causing anaphylaxis include food items (e.g., peanuts, shellfish), drugs (e.g., penicillin, asparaginase, corticotropin,...
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Drug-related allergies are immune-mediated responses triggered by the administration of pharmacological agents. These hypersensitivity reactions are classified based on the immune mechanisms involved. The four primary types—Type I, II, III, and IV—are mediated by different immunological pathways and exhibit distinct clinical manifestations.Type I Hypersensitivity/ IgE-Mediated Reactions: Immunoglobulin E (IgE) immediately mediates Type I hypersensitivity reactions. Upon initial...
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Application of Biochip Microfluidic Technology to Detect Serum Allergen-specific Immunoglobulin E sIgE
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[Shrimp as an allergen source].

Marlon Múnera1, Luis Gómez1, Leonardo Puerta1

  • 1Instituto de Investigaciones Inmunológicas, Universidad de Cartagena.

Biomedica : Revista Del Instituto Nacional De Salud
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Summary
This summary is machine-generated.

Shrimp allergy is common, with tropomyosin being a key allergen causing cross-reactivity with other arthropods. Further research into shrimp allergens like hemocyanin is needed to understand allergic responses.

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Area of Science:

  • Food allergy research
  • Immunology
  • Molecular biology

Context:

  • Shellfish allergy, particularly shrimp allergy, is a significant global health concern.
  • The full range of shrimp allergens and their cross-reactivity with other arthropods remains incompletely understood.
  • Litopenaeus vannamei is the most consumed shrimp in Colombia, highlighting the need for specific allergen characterization.

Purpose:

  • To review recent advancements in characterizing shrimp allergens.
  • To explore the relationship between shrimp allergens and those from other allergenic arthropods.
  • To investigate the allergenic potential of Litopenaeus vannamei.

Summary:

  • Tropomyosin is the primary shrimp allergen identified, mediating cross-reactivity with arthropods like dust mites.
  • Newly identified allergens in L. vannamei, including hemocyanin and fatty acid-binding proteins, are under preliminary investigation.
  • Emerging evidence suggests these new allergens may also contribute to cross-reactivity between shrimp and dust mites.

Impact:

  • Characterizing all shrimp allergens will enhance understanding of their allergenic roles.
  • This research can inform diagnostic strategies and allergen avoidance for individuals with shrimp allergy.
  • Findings contribute to the broader field of food allergy and cross-reactivity research.