[Allergy caused by Alternaria in children]

A Angrisano1, L Di Berardino, G Montrasio

  • 1Divisione di Pediatria, Presidio ospedaliero di Bollate, Italia.

Insights

Alternaria tenuis molds are significant causes of childhood respiratory diseases like asthma and rhinitis. This study confirms their role as an immunopathogen, highlighting the need for further research.

Area of Science:

  • Mycology
  • Immunology
  • Pediatric Allergy

Context:

  • Molds, particularly Alternaria tenuis, are implicated in respiratory conditions but remain understudied.
  • Previous research has not fully elucidated the role of specific fungi in pediatric allergic diseases.

Purpose:

  • To investigate the role of Alternaria tenuis as an immunopathogen in pediatric rhinitis and asthma.
  • To assess the correlation between skin testing and specific IgE levels (RAST) for Alternaria tenuis.

Summary:

  • A study involving 253 children found that 9.48% had immediate skin reactions to Alternaria tenuis, with 3.55% reacting solely to this fungus.
  • A strong correlation (66%) was observed between positive skin tests and positive Radioallergosorbent Test (RAST) results.
  • The findings suggest Alternaria tenuis plays a significant role in the development of allergic rhinitis and asthma in children.

Impact:

  • Provides evidence supporting Alternaria tenuis as a key allergen in childhood respiratory allergies.
  • Highlights the utility of skin prick tests and RAST in diagnosing Alternaria tenuis-induced allergies.
  • Informs future epidemiological studies and clinical management strategies for pediatric allergic airway diseases.

Related Concept Videos

Allergic Reactions02:06

Allergic Reactions

Overview
Skin Diseases and Disorders01:23

Skin Diseases and Disorders

Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Allergic Drug Reactions01:27

Allergic Drug Reactions

Allergic reactions related to drugs are hypersensitivity responses driven by the immune system and bear no connection to the drug's therapeutic action. While drugs in isolation do not trigger an immune response, they can interact with endogenous proteins to form antigens. These antigens stimulate lymphocytes to produce antibodies. IgE-type antibodies attach themselves to mast cells. Upon subsequent exposure to the same stimulus, the antigen-antibody interaction is initiated, unleashing numerous...
Hypersensitivities01:30

Hypersensitivities

Hypersensitivity, also known as a hypersensitivity reaction or allergic reaction, is a condition where the body's immune system reacts abnormally to a foreign substance. Such substances, that cause hypersensitivity are referred to as an allergen, could be something typically harmless to most people, like pollen or certain foods.
Types of Hypersensitivities
Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...
Asthma I: Introduction01:28

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...
Hypersensitivity Reactions: Immune-Complex Reactions01:19

Hypersensitivity Reactions: Immune-Complex Reactions

Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum sickness, a systemic...