Talaromyces

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the temperature-dependent dimorphism exhibited by Talaromyces marneffei?

  • The fungus grows as a mold form at 25°C and as a yeast at 37°C (correct)
  • The fungus grows as a yeast form at both 25°C and 37°C
  • The fungus grows as a mold form at both 25°C and 37°C
  • The fungus grows as a yeast form at 25°C and as a mold at 37°C

What is the presumed mode of transmission for T. marneffei?

  • Direct contact with infected humans
  • Ingestion of contaminated food or water
  • Inhalation of environmental conidia (correct)
  • Bite of infected animals

What is the most common manifestation of disseminated infection in profoundly immunosuppressed patients with a CD4+ T-cell count ≤100 cells/mm3?

  • Characteristic skin lesions
  • Respiratory and gastrointestinal abnormalities
  • Disseminated infection involving multiple organ systems (correct)
  • Fever and weight loss

What is the characteristic feature of Paracoccidioidomycosis that can be seen on Giemsa- or Wright-stained smears?

<p>Intra-macrophage yeasts with central septa (B)</p> Signup and view all the answers

What is the recommended treatment for joint involvement in paradoxical IRIS?

<p>Non-steroidal anti-inflammatory medications (D)</p> Signup and view all the answers

What is the recommended initial therapy for antifungal treatment according to international guidelines?

<p>Amphotericin B deoxycholate (C)</p> Signup and view all the answers

What is the primary concern for not widely adopting the strategy of primary prophylaxis with itraconazole in Asia?

<p>High costs (C)</p> Signup and view all the answers

What is the current classification of Talaromyces marneffei?

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

What is the main disadvantage of PCR-based assays for diagnosing Paracoccidioidomycosis?

<p>Low sensitivity (D)</p> Signup and view all the answers

What is the relapse rate for patients who are compliant on secondary prophylaxis with itraconazole and effective ART?

<p>1-7% (B)</p> Signup and view all the answers

What is the role of macrophages in host defense against T. marneffei?

<p>They phagocytize T. marneffei conidia via an l-arginine-dependent nitric oxide pathway (C)</p> Signup and view all the answers

What are the common laboratory findings in patients with disseminated infection caused by intracellular pathogens?

<p>Elevated serum aspartate aminotransferase and alanine aminotransferase (B)</p> Signup and view all the answers

What is the critical virulence factor of T. marneffei in a mouse model?

<p>Mp1p (B)</p> Signup and view all the answers

What is the on-treatment mortality of disseminated infection in both HIV-infected and non-HIV-infected patients?

<p>Up to 30% (C)</p> Signup and view all the answers

What did the multicenter itraconazole versus amphotericin B for talaromycosis trial (IVAP) demonstrate about the effectiveness of amphotericin B and itraconazole?

<p>Amphotericin B was superior to itraconazole as initial therapy (D)</p> Signup and view all the answers

Which antigen detection assay has the highest sensitivity and specificity for diagnosing Paracoccidioidomycosis?

<p>Mp1p-based antigen detection assay (B)</p> Signup and view all the answers

Which of the following is true about talaromycosis?

<p>It is the most common cause of death in patients with advanced HIV infection in endemic regions (A)</p> Signup and view all the answers

What is the recommended maintenance antifungal therapy for patients with co-infections of cryptococcal meningitis and talaromycosis?

<p>Voriconazole or isavuconazole (B)</p> Signup and view all the answers

Flashcards are hidden until you start studying

Study Notes

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team
Use Quizgecko on...
Browser
Browser