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Related Concept Videos

Allergic Reactions02:06

Allergic Reactions

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Overview
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Asthma I: Introduction01:28

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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...
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Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...
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Asthma is a prevalent chronic respiratory condition marked by inflammation and hyperresponsiveness of the airways. Its pathophysiology involves complex interactions among inflammatory pathways, immune responses, and neural mechanisms.
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Asthma is a chronic respiratory condition for which new therapeutic avenues, including anti-inflammatory drugs like mast cell stabilizers and anti-IgE treatments, continue to be developed.
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Leukotriene modifiers, or cysteinyl leukotriene receptor antagonists, are medications used to manage chronic asthma. These agents target specific inflammatory mediators produced during arachidonic acid metabolism, an essential process in generating inflammation in the body.
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A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma
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Mites and allergy.

Enrique Fernández-Caldas1, Leonardo Puerta, Luis Caraballo

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This summary is machine-generated.

Mite allergens from house dust and storage mites cause allergic diseases like asthma and dermatitis. Understanding mite allergens and cross-reactivity is key for effective avoidance and immunotherapy treatments.

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Area of Science:

  • Immunology
  • Allergology
  • Molecular Biology

Background:

  • Mite allergens are significant triggers for allergic diseases, including allergic rhinoconjunctivitis, asthma, and atopic dermatitis.
  • Since the 1960s, numerous mite species, particularly Dermatophagoides, have been identified as sources of allergens responsible for sensitizing individuals.

Observation:

  • House dust allergens primarily originate from fecal pellets of species like D. pteronyssinus and D. farinae, as well as storage mites such as Blomia tropicalis.
  • Major allergens include Group 1 and 2 in house dust mites, and fatty acid-binding proteins, tropomyosin, and others in storage mites.
  • Mites possess potent enzymes, with most mite allergens being enzymes, and exhibit common cross-reactivity among species.

Findings:

  • Cross-reactivity among mite allergens is a prevalent immunological feature, assessed through various techniques including epitope mapping and proteomic approaches.
  • Advances in genomics and molecular biology are enhancing the understanding of genetic factors influencing specific IgE responses to mites.

Implications:

  • Mite allergen avoidance and immunotherapy remain the primary allergen-specific strategies for managing mite-induced respiratory and skin conditions.
  • Further research into mite allergen genetics and cross-reactivity can lead to more targeted and effective treatments for allergic diseases.