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Related Concept Videos

Gene-Environment Interactions01:20

Gene-Environment Interactions

Gene expression is a dynamic process that is significantly influenced by environmental factors. This interaction underlies the complex nature of biological development and the phenotypic differences observed among individuals, even among those with identical genetic makeups. Factors such as radiation, temperature, behavior, nutrition, and stress play pivotal roles in determining how genes are expressed. The concept of the reaction range is central to understanding this interaction. It posits...
Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
Background and Environment Affect Phenotype02:27

Background and Environment Affect Phenotype

Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
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...
Allergic Reactions: Anaphylaxis01:30

Allergic Reactions: Anaphylaxis

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, heparin),...
Drug Toxicity: Allergic Reactions01:30

Drug Toxicity: Allergic Reactions

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 exposure to a...

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Updated: Jun 1, 2026

Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
08:09

Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease

Published on: January 7, 2014

Allergic diseases, gene-environment interactions.

H Renz1, M Conrad, S Brand

  • 1Institute of Laboratory Medicine and Pathobiochemistry, Molecular Diagnostics, University Hospital Giessen and Marburg Faculty of Medicine, Philipps University Marburg, Germany. renzh@med.uni-marburg.de

Allergy
|June 15, 2011
PubMed
Summary
This summary is machine-generated.

Allergic asthma arises from immune system imbalances, particularly involving T helper 2 (Th2) cells. Gene-environment interactions, both before and after birth, influence this immune dysregulation, offering chances for early intervention.

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Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
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Identification and Characterization of Immunogenic RNA Species in HDM Allergens that Modulate Eosinophilic Lung Inflammation
08:44

Identification and Characterization of Immunogenic RNA Species in HDM Allergens that Modulate Eosinophilic Lung Inflammation

Published on: May 30, 2020

Area of Science:

  • Immunology
  • Allergy Research
  • Genetics

Background:

  • Allergic asthma pathogenesis involves immune system dysregulation.
  • Imbalance in T helper 2 (Th2) cell responses is a key factor.
  • Complex gene-environment interactions contribute to immune dysfunction.

Purpose of the Study:

  • To investigate the role of immune dysregulation in allergic asthma.
  • To explore the impact of gene-environment interactions on immune programming.
  • To identify opportunities for early intervention in allergic asthma.

Main Methods:

  • Analysis of innate and adaptive immune functions.
  • Assessment of Th2-driven immune responses.
  • Examination of gene-environment interactions during prenatal and postnatal development.

Main Results:

  • Dysregulation of innate and adaptive immunity observed in allergic asthma.
  • Significant imbalance in Th2-driven immune responses identified.
  • Gene-environment interactions confirmed as critical contributors to immune dysregulation.

Conclusions:

  • Immune dysregulation, particularly Th2 imbalance, is central to allergic asthma.
  • Gene-environment interactions influence immunological programming throughout development.
  • Early life interventions targeting immune programming show promise for preventing allergic asthma.