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Related Concept Videos

Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
Humoral Immune Responses01:36

Humoral Immune Responses

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Development of Immunocompetence01:22

Development of Immunocompetence

The initiation of cell-mediated immunity can be observed as early as the third month of fetal growth, with active antibody-mediated immunity following approximately one month later.
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
What is the Immune System?01:38

What is the Immune System?

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Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...

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Primary immunodeficiency.

Christine McCusker1, Richard Warrington

  • 1McGill University, Montreal, Quebec, Canada. christine.mccusker@mcgill.ca.

Allergy, Asthma, and Clinical Immunology : Official Journal of the Canadian Society of Allergy and Clinical Immunology
|December 15, 2011
PubMed
Summary
This summary is machine-generated.

Primary immunodeficiency disorders (PIDs) encompass over 130 conditions affecting immune function. Early diagnosis and tailored treatments, including immunoglobulin replacement and immune reconstitution, are crucial for managing PIDs and preventing infections.

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Area of Science:

  • Immunology
  • Clinical Medicine

Background:

  • Primary immunodeficiency disorders (PIDs) comprise over 130 distinct conditions stemming from immune system defects.
  • PIDs are categorized into adaptive (T-cell, B-cell, combined) and innate (phagocyte, complement) immune system disorders.
  • Increased susceptibility to infection is a common clinical manifestation across various PIDs.

Purpose of the Study:

  • To provide a comprehensive overview of primary immunodeficiency disorders.
  • To outline diagnostic strategies for identifying PIDs.
  • To discuss management approaches for different PID categories.

Main Methods:

  • Diagnostic testing includes lymphocyte proliferation assays, flow cytometry, immunoglobulin level measurement, and specific antibody titer assessment.
  • Functional assays for neutrophils and cytokine responses, along with complement studies, are utilized.
  • Clinical evaluation considers recurrent infections, failure to thrive, poor treatment response, and family history.

Main Results:

  • PIDs present with diverse clinical manifestations, frequently involving recurrent infections.
  • Diagnostic workup involves a range of immunological assays to identify specific defects.
  • Treatment strategies are complex, involving supportive care and definitive interventions like immunoglobulin replacement or immune reconstitution.

Conclusions:

  • Prompt diagnosis and management are essential to reduce morbidity associated with PIDs.
  • Treatment requires a multifaceted approach tailored to the specific type of immunodeficiency.
  • Consultation with a clinical immunologist is critical for optimal patient care.