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Related Concept Videos

Complement System01:27

Complement System

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The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
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Complementation Tests00:49

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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.
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
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Antibody Actions01:26

Antibody Actions

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Antibodies, or immunoglobulins, are critical players in the immune system's arsenal against invading pathogens. Produced by B cells and plasma cells, their primary role is to detect and bind to specific antigens, molecules found on the surface of pathogens like bacteria or viruses. Beyond antigen recognition, antibodies perform several vital functions that contribute to immune defense.
Neutralization
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Antimicrobial Proteins01:23

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Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
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Defense Against Bacterial Pathogens01:31

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The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
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Depletion of Specific Cell Populations by Complement Depletion
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Complement.

Paul A Monach1

  • 1VA Boston Healthcare System and Harvard Medical School, Boston, Massachusetts.

Arthritis & Rheumatology (Hoboken, N.J.)
|August 8, 2023
PubMed
Summary
This summary is machine-generated.

This review examines the complement system

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Area of Science:

  • Immunology
  • Clinical Medicine

Background:

  • The complement system is crucial in innate and adaptive immunity.
  • Dysregulation of complement contributes to various autoimmune, inflammatory, and infectious diseases.

Purpose of the Study:

  • To review the clinical applicability of the complement system.
  • To discuss complement's role in disease and diagnostic/therapeutic strategies.

Main Methods:

  • Literature review focusing on clinical applications of complement.
  • Case study illustrating serum C3 and C4 testing for differential diagnosis.

Main Results:

  • Complement plays a significant role in autoimmune, inflammatory, and infectious diseases.
  • Laboratory tests for complement are useful for diagnosis and monitoring.
  • Targeted therapies for complement components are emerging.

Conclusions:

  • Understanding complement is clinically relevant for diagnosing and managing various diseases.
  • Complement diagnostics and therapeutics offer promising avenues for patient care.