Related Experiment Video
Updated: Jul 20, 2026
09:09
Generating a Reproducible Model of Mid-Gestational Maternal Immune Activation using Poly(I:C) to Study Susceptibility and Resilience in Offspring
Published on: August 17, 2022
[Genetic predisposition and children infectious disease].
C Picard1, O Filipe-Santos, A Chapgier
1Centre d'Etude des Déficits Immunitaires, Hôpital Necker-Enfants-Malades, Assistance Publique-Hôpitaux de Paris, 149, rue de Sèvres, 75015 Paris, France. picardc@necker.fr <picardc@necker.fr>
Summary
Severe pediatric infections previously unexplained now have genetic causes. Defects in specific genes lead to recurrent infections by single pathogen types in children, unlike classic primary immunodeficiencies.
Area of Science:
- Immunology
- Genetics
- Pediatrics
Context:
- Primary immunodeficiencies (PIDs) are genetic disorders affecting the immune system.
- Historically, some severe pediatric infections lacked a clear cause.
- Recent advances have identified genetic defects underlying previously idiopathic pediatric infections.
Purpose:
- To explain the molecular basis of severe pediatric infections.
- To differentiate these conditions from classic primary immunodeficiencies.
- To highlight the role of specific gene defects in pathogen susceptibility.
Summary:
- Defects in specific genes predispose otherwise healthy individuals to infections.
- These genetic defects result in severe or recurrent infections caused by a single type of microorganism.
- This contrasts with classic PIDs, which involve susceptibility to a broader range of pathogens.
Impact:
- Provides a molecular explanation for previously idiopathic pediatric infections.
- Identifies a new category of hereditary immunodeficiency.
- Improves understanding of host-pathogen interactions and genetic susceptibility to infectious diseases.
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