Type 1 Diabetes and Autoimmune Mechanisms Quiz
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Questions and Answers

What is the epitope targeted by T cells in Type 1 diabetes?

  • insB:9–23 (correct)
  • insC:12–27
  • insA:5–18
  • insD:3–15

Which peptide from Parabacteroides distasonis activated T cells specific to insB:9–23 in T1D patients and NOD mice?

  • lmnopq7-25
  • abcde5-20
  • hprt4–18 (correct)
  • xyzt3-15

What effect did colonization with P. distasonis have on the development of T1D in female NOD mice?

  • Prevented the development of T1D
  • Delayed the development of T1D
  • Accelerated the development of T1D (correct)
  • Had no effect on the development of T1D

What was observed in the sera of NOD mice colonized with P. distasonis and human T1D patients?

<p>P. distasonis–reacting antibodies (D)</p> Signup and view all the answers

What effect did colonization with P. distasonis have on the development of T1D in female NOD mice?

<p>Accelerated the development of T1D (B)</p> Signup and view all the answers

What is the epitope targeted by T cells in Type 1 diabetes?

<p>insB:9–23 (B)</p> Signup and view all the answers

Which peptide from Parabacteroides distasonis activated T cells specific to insB:9–23 in T1D patients and NOD mice?

<p>hprt4–18 (C)</p> Signup and view all the answers

What was observed in the sera of NOD mice colonized with P. distasonis and human T1D patients?

<p>P. distasonis–reacting antibodies (B)</p> Signup and view all the answers

Which cell type decreased in female NOD mice colonized with P. distasonis, contributing to the acceleration of T1D development?

<p>FoxP3+ regulatory T cells (A)</p> Signup and view all the answers

What was the effect of adoptive transfer of splenocytes from P. distasonis–treated mice to NOD/SCID mice?

<p>Enhanced disease phenotype (C)</p> Signup and view all the answers

What was identified in the sera of NOD mice colonized with P. distasonis and human T1D patients?

<p>Auto-antibodies (B)</p> Signup and view all the answers

Which peptide from Parabacteroides distasonis activated T cells specific to insB:9–23 in T1D patients and NOD mice?

<p>hprt4–18 peptide (B)</p> Signup and view all the answers

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