Anti-Streptolysin O (ASO)
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Questions and Answers

Which type of Streptococcus bacteria produces streptolysin O?

  • Group A only (correct)
  • Group C only
  • Group G only
  • All of the above

What is the main function of streptolysin O?

  • To cause hemolysis (correct)
  • To produce antibodies
  • To treat patients with increased levels of ASO titre
  • To cause damage to the heart and joints

What can increased levels of ASO titre in the blood cause?

  • Damage to the heart and joints (correct)
  • Damage to the brain and kidneys
  • Damage to the liver and lungs
  • Damage to the skin and muscles

What does ASO stand for?

<p>Anti-Streptolysin O (B)</p> Signup and view all the answers

What is ASO used for in diagnosis and follow up?

<p>To detect streptococcal infections (C)</p> Signup and view all the answers

Which type of streptococcal bacteria produces streptolysin O?

<p>Groups A, C, and G (D)</p> Signup and view all the answers

What is the main function of streptolysin O?

<p>To cause hemolysis (A)</p> Signup and view all the answers

What can increased levels of ASO titre in the blood indicate?

<p>Past or present infection (B)</p> Signup and view all the answers

What does ASO stand for?

<p>Antibody against Streptolysin O (D)</p> Signup and view all the answers

What is the other related toxin to streptolysin O?

<p>Streptolysin B (B)</p> Signup and view all the answers

Flashcards

Streptolysin O

A type of toxin produced by certain Streptococcus bacteria, specifically Group A, which breaks down red blood cells.

Hemolysis

The breakdown of red blood cells, often caused by toxins.

ASO Titre

A test that measures the levels of antibodies against Streptolysin O in the blood.

Anti-Streptolysin O (ASO)

Antibodies specifically targeting Streptolysin O, found in the blood.

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ASO Test

A test used to detect recent or past infections with certain Streptococcus bacteria. Increased levels suggest infection.

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Group A Streptococcus

This type of Streptococcus bacteria produces Streptolysin O, often causing infection.

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Streptolysin O (Increased Levels)

A toxin that can damage the heart and joints, often found in increased levels after infection with Streptolysin O producing bacteria.

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Rheumatic Fever

A condition that can occur following a Streptococcus infection, characterized by damage to the heart and joints.

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Increased ASO Titre

Indicates a likely past or present infection with certain Streptococcus bacteria that produce Streptolysin O.

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Streptolysin B

Another toxin produced by Streptococcus bacteria, related to Streptolysin O.

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Study Notes

Streptococcus Bacteria and Toxins

  • Streptolysin O is produced by beta-hemolytic streptococci, specifically Group A Streptococcus (GAS).
  • The main function of streptolysin O is to cause hemolysis, or the breakdown of red blood cells.

ASO Titre and Diagnosis

  • ASO stands for Antistreptolysin O.
  • Increased levels of ASO titre in the blood can indicate a past infection with beta-hemolytic streptococci, specifically Group A Streptococcus (GAS).
  • ASO is used in diagnosis and follow-up to monitor the body's immune response to streptococcal infections, such as rheumatic fever.
  • Streptolysin S is the other related toxin to streptolysin O.

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Description

Test your knowledge of Anti-streptolysin O (ASO) with this quiz! Learn about the antibody made against streptolysin O, its function, and its association with different strains of Streptococcus bacteria. Challenge yourself and expand your understanding of this important immunogenic exotoxin.

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