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Related Concept Videos

Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

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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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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.
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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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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.
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Atopic dermatitis: allergic dermatitis or neuroimmune dermatitis?

Neide Kalil Gaspar1, Márcia Kalil Aidé2

  • 1Universidade Federal Fluminense (UFF) - Niterói (RJ), Brazil.

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|September 1, 2016
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Summary

Neurocellular relationships offer new insights into atopic dermatitis, a condition involving heightened responses to stimuli. Understanding the neurosensory network disruptions is key to managing itching and airway hyperresponsiveness in atopic patients.

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Area of Science:

  • Neuroscience
  • Dermatology
  • Immunology

Background:

  • Atopic dermatitis involves heightened responses to stimuli due to complex neurocellular interactions.
  • Neuropeptides and neurotrophins play a crucial role in the neurosensory network, but their genetic relations are not fully understood.
  • Disruptions in neurosensory network activity are linked to key atopic symptoms like itching and airway hyperresponsiveness.

Purpose of the Study:

  • To explore the intricate neurocellular relationships underlying atopic dermatitis.
  • To elucidate the role of neuropeptides and neurotrophins in the pathogenesis of atopic conditions.
  • To understand the genetic factors influencing neurosensory network activity in atopy.

Main Methods:

  • Review of current literature on neurocellular signaling in atopic dermatitis.
  • Analysis of epidermal innervation patterns and neurotrophin/neuropeptide production.
  • Investigation of sensory receptor interactions in compromised skin barrier.

Main Results:

  • Increased epidermal innervation and elevated production of neurotrophins, neuropeptides, cytokines, and proteases observed.
  • Evidence suggests a disrupted neurosensory network in atopic individuals.
  • Poor lipid mantle in the epidermis exacerbates interactions with sensory receptors.

Conclusions:

  • Neurocellular mechanisms are central to understanding atopic dermatitis.
  • Targeting neurotrophins and neuropeptides may offer novel therapeutic strategies.
  • Further research into genetic influences is needed for comprehensive treatment approaches.