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Related Concept Videos

Immunodeficiency Diseases01:25

Immunodeficiency Diseases

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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...
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Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
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A complementation test is a simple cross to identify whether the two mutations are located on the same gene or different genes. It was first performed by Edward Lewis in the 1940s while working on fruit flies. He developed the test to identify the location and arrangement of different mutations on chromosomes.
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T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
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Special Features of Adaptive Immunity01:20

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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.
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Isolating Human Peripheral Blood Mononuclear Cells and CD4+ T cells from Sézary Syndrome Patients for Transcriptomic Profiling
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Different clinical phenotypes in common variable immunodeficiency.

M Ribeiro Rodero1, M Benevides1, B M Nascimento1

  • 1Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil.

European Annals of Allergy and Clinical Immunology
|October 14, 2024
PubMed
Summary
This summary is machine-generated.

Common variable immunodeficiency (CVID) presents with diverse infectious and noninfectious symptoms. Immunoglobulin replacement therapy significantly reduces the frequency of respiratory infections in CVID patients.

Keywords:
Common variable immunodeficiencyimmunoglobulinsinfectionsinflammationprimary immunodeficiency diseases

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Area of Science:

  • Immunology
  • Clinical Medicine

Background:

  • Common variable immunodeficiency (CVID) is characterized by a wide spectrum of clinical manifestations.
  • Understanding the heterogeneity of CVID is crucial for timely diagnosis and management.

Purpose of the Study:

  • To describe the clinical heterogeneity of CVID, including infectious and noninfectious manifestations.
  • To evaluate the impact of immunoglobulin replacement therapy on reducing infections in CVID patients.

Main Methods:

  • A descriptive case series study involving retrospective review of medical charts.
  • Data collected included demographics, clinical presentation, treatment, and laboratory findings.

Main Results:

  • Thirty-six CVID patients were analyzed, with a median age of 19 years at diagnosis.
  • Recurrent infections (97%) and noninfectious manifestations (89%) were highly prevalent.
  • Immunoglobulin replacement therapy led to a significant reduction in infections, particularly pneumonia and sinusitis.

Conclusions:

  • Despite diagnostic improvements, CVID diagnosis is often delayed.
  • Physicians should consider both infectious and noninfectious symptoms as potential early signs of CVID.
  • Immunoglobulin replacement therapy is effective in reducing respiratory infections in CVID patients.