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Immunodeficiency Diseases01:25

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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.
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Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
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The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.
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Primary B-cell immunodeficiencies.

Tukisa Smith1, Charlotte Cunningham-Rundles2

  • 1Division of Allergy and Clinical Immunology, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029-6574, United States; The Rockefeller University, Laboratory of Biochemical Genetics and Metabolism, 1230 York Avenue, Box 179, New York, NY 10065, United States.

Human Immunology
|October 26, 2018
PubMed
Summary
This summary is machine-generated.

Primary B-cell immunodeficiencies involve impaired antibody production, leading to recurrent infections. This review categorizes these defects based on B-cell presence, immunoglobulin isotypes, and antibody function.

Keywords:
AgammaglobulinemiaAntibodyB-cell receptorCommon variable immunodeficiencyHyper IgM syndrome

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Area of Science:

  • Immunology
  • Clinical Medicine

Background:

  • Primary B-cell immunodeficiencies are genetic disorders affecting antibody production.
  • These defects can stem from intrinsic B-cell abnormalities or T-cell interactions.
  • Clinical manifestations include recurrent infections, varying with the defect's location and severity.

Purpose of the Study:

  • To review and categorize primary B-cell immunodeficiencies.
  • To provide a framework for understanding B-cell defects based on key immunological markers.

Main Methods:

  • Literature review of B-cell immunodeficiencies.
  • Categorization based on peripheral B-cell counts.
  • Analysis of immunoglobulin isotype profiles.
  • Assessment of antibody production impairment.

Main Results:

  • Defects are classified by the presence or absence of peripheral B-cells.
  • Immunoglobulin isotype patterns are analyzed for diagnostic clues.
  • Evidence of antibody impairment is a key classification criterion.

Conclusions:

  • A structured approach to classifying B-cell immunodeficiencies aids diagnosis.
  • Understanding B-cell development defects is crucial for patient management.
  • This classification aids in identifying specific molecular defects and guiding treatment.