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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...
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...
Special Features of Adaptive Immunity01:20

Special Features of Adaptive Immunity

The adaptive immune system, a crucial component of the overall immune response, offers a highly specialized defense against pathogens. It involves specific cell types and features, enabling it to combat infections effectively and efficiently.
The primary cell types involved in adaptive immunity are T cells and B cells. Each type has a unique role in defending the body against pathogens. T cells are responsible for cell-mediated immunity. They identify and eliminate infected cells directly,...
Infectious Diseases and Their Occurrence01:28

Infectious Diseases and Their Occurrence

Infectious diseases appear in populations through various transmission patterns, influenced by pathogen characteristics, population immunity, environmental conditions, and social behavior. Understanding these patterns is essential for effective public health surveillance and intervention. These categories—sporadic, outbreak, epidemic, pandemic, and endemic—help frame the nature and scope of disease events.Sporadic diseases occur irregularly and infrequently, without a predictable temporal or...
Cytomegalovirus Disease01:27

Cytomegalovirus Disease

Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...
Antigens Involved in Adaptive Immunity01:26

Antigens Involved in Adaptive Immunity

An antigen is any substance the immune system identifies as foreign and potentially harmful to the body, prompting an immune response. Antigens have two functional properties: immunogenicity and reactivity. Immunogenicity is the ability of an antigen to stimulate a specific immune response. At the same time, reactivity describes the antigen's ability to react with the cells and antibodies produced in response to it.
Complete Antigens
Complete antigens possess both immunogenicity and reactivity.

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Related Experiment Video

Updated: May 18, 2026

Whole Blood Assay with Dual Co-Stimulation for Antigen-Specific Analysis of Host Immunity to Fungal and Viral Pathogens
06:03

Whole Blood Assay with Dual Co-Stimulation for Antigen-Specific Analysis of Host Immunity to Fungal and Viral Pathogens

Published on: September 20, 2024

Common variable immunodeficiency: an update.

Ulrich Salzer, Klaus Warnatz, Hans Hartmut Peter

    Arthritis Research & Therapy
    |October 10, 2012
    PubMed
    Summary
    This summary is machine-generated.

    Common variable immunodeficiency (CVID) causes recurrent infections and immune system complications. Early diagnosis and treatment are crucial for better outcomes in this primary immunodeficiency.

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    Published on: July 9, 2014

    Area of Science:

    • Immunology
    • Clinical Medicine
    • Genetics

    Background:

    • Common variable immunodeficiency (CVID) is a heterogeneous primary immunodeficiency characterized by hypogammaglobulinemia and recurrent infections.
    • It is the most frequent symptomatic primary immunodeficiency in adults, often presenting with respiratory and gastrointestinal infections.
    • CVID patients frequently develop autoimmune, inflammatory, and lymphoproliferative complications, complicating diagnosis and management.

    Purpose of the Study:

    • To provide a systematic overview of the immunological, clinical, diagnostic, and therapeutic aspects of CVID.
    • To highlight recent advancements in understanding and managing CVID.
    • To emphasize the correlation between immunological markers and clinical presentation.

    Main Methods:

    • Review of immunological studies demonstrating phenotypic and functional abnormalities in immune cells.
    • Analysis of clinical multi-center studies correlating immunological markers with clinical presentation.
    • Systematic overview of diagnostic criteria and therapeutic strategies for CVID.

    Main Results:

    • Impaired memory B-cell formation is a hallmark of CVID, useful for patient classification.
    • Phenotypic and functional abnormalities are observed in T cells, B cells, and antigen-presenting cells.
    • Delayed diagnosis and treatment, along with chronic inflammatory complications, significantly impact long-term outcomes.

    Conclusions:

    • While immunoglobulin replacement and antibiotics manage infections, non-infectious complications remain a therapeutic challenge.
    • Understanding immunological, clinical, and diagnostic aspects is key to improving CVID patient outcomes.
    • Further research into CVID pathogenesis and novel therapies is essential for managing complex cases.