Candida Glabrata Azole Resistance Quiz
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Questions and Answers

What mechanism is responsible for conferring resistance against azole compounds in C. albicans?

  • Overexpression of efflux-pumps
  • Metabolic bypass (correct)
  • Mitochondrial alterations
  • Activation of stress pathways

Which mechanism involves the prevention of accumulating toxic metabolites by inactivating another enzyme in the pathway?

  • Metabolic bypass (correct)
  • Structural target site alterations
  • Adjustment of membrane homeostasis
  • Overexpression of efflux-pumps

What mechanism involves the alteration of membrane homeostasis to make it more rigid or more fluid?

  • Overexpression of efflux-pumps
  • Adjustment of membrane homeostasis (correct)
  • Mitochondrial alterations
  • Activation of stress pathways

Which mechanism involves the acquisition of mutations in genes encoding antifungal targets, resulting in resistance in many pathogenic fungi?

<p>Structural target site alterations (D)</p> Signup and view all the answers

Which mechanism involves the ability of fungal pathogens to excrete antifungal compounds through overexpression of specific efflux pumps?

<p>Overexpression of efflux-pumps (D)</p> Signup and view all the answers

Is the alteration of membrane homeostasis a mechanism of antifungal resistance?

<p>True (A)</p> Signup and view all the answers

Does the overexpression of efflux pumps contribute to antifungal resistance in many fungal species?

<p>True (A)</p> Signup and view all the answers

Is the prevention of accumulating toxic metabolites by inactivating another enzyme a mechanism of antifungal resistance?

<p>True (A)</p> Signup and view all the answers

Do non-synonymous SNPs lead to amino-acid alterations and reduced binding affinity of the antifungal to the target?

<p>True (A)</p> Signup and view all the answers

Is the activation of stress pathways not essential for surviving stressful conditions in the environment?

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

Is the loss of mitochondrial function associated with increased fluconazole resistance in glabrata isolate?

<p>True (A)</p> Signup and view all the answers

Is rebalancing of the hypoxic response suggested as a mechanism for increased fluconazole resistance due to loss of mitochondrial function?

<p>True (A)</p> Signup and view all the answers

Do azoles and polynx amphotericin B have an impact on membrane homeostasis by disturbing cellular ergosterol content?

<p>True (A)</p> Signup and view all the answers

Does the adjustment of membrane homeostasis involve changing the ratio of phospholipid species to make the membrane more rigid or more fluid?

<p>True (A)</p> Signup and view all the answers

Is Hsp90 chaperone a key regulator in stress signaling and involved in protein folding and stabilizing many proteins involved in signal transduction protein?

<p>True (A)</p> Signup and view all the answers

What is the impact of azoles and polynx amphotericin B on membrane homeostasis?

<p>Disturbing cellular ergosterol content, leading to membrane destabilization and subsequent lysis of the cell (C)</p> Signup and view all the answers

What is the suggested mechanism for increased fluconazole resistance due to loss of mitochondrial function?

<p>Rebalancing of the hypoxic response (A)</p> Signup and view all the answers

What is the role of Hsp90 chaperone in stress signaling?

<p>Involved in protein folding and stabilizing many proteins involved in signal transduction (B)</p> Signup and view all the answers

How do eukaryotic cells adjust membrane homeostasis in response to antifungal drugs?

<p>By changing the ratio of phospholipid species to make the membrane more rigid or more fluid (B)</p> Signup and view all the answers

What is the effect of loss of mitochondrial function on fluconazole resistance in glabrata isolate?

<p>Increased fluconazole resistance up to 50 μg/ml (B)</p> Signup and view all the answers

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