Culturing of Piedraia hortae: Procedures and Identification
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Questions and Answers

Which organ involvement is commonly associated with Trichosporon asahii infections?

  • Kidney
  • Liver (correct)
  • Heart
  • Stomach
  • What pulmonary symptoms can be seen in individuals with Trichosporon asahii infections?

  • Headache and joint pain
  • Cough and chest pain (correct)
  • Back pain and dizziness
  • Nausea and vomiting
  • Which type of infection is Trichosporon asahii commonly known to cause in patients with indwelling catheters?

  • Catheter-related infections (correct)
  • Bone infections
  • Joint infections
  • Muscle infections
  • What type of infections can manifest as skin lesions, nodules, or abscesses in cases of Trichosporon asahii?

    <p>Cutaneous infections</p> Signup and view all the answers

    In which rare condition can Trichosporon asahii cause inflammation of the inner layers of the eye?

    <p>Endophthalmitis</p> Signup and view all the answers

    Which type of infection has been reported in some cases involving the urinary tract in relation to Trichosporon asahii?

    <p>Urinary tract infections</p> Signup and view all the answers

    What is the main causative agent of cutaneous mycoses?

    <p>Dermatophytes</p> Signup and view all the answers

    How do superficial mycoses differ from deeper-seated infections?

    <p>They don't invade living tissues</p> Signup and view all the answers

    What type of medications are often used to treat superficial mycoses?

    <p>Topical antifungal medications</p> Signup and view all the answers

    Which part of the body do superficial mycoses primarily affect?

    <p>Outermost skin layers</p> Signup and view all the answers

    In what way can good personal hygiene help prevent the recurrence of superficial mycoses?

    <p>By keeping affected areas clean and dry</p> Signup and view all the answers

    What is the main characteristic that distinguishes cutaneous mycoses from superficial mycoses?

    <p>Invasion of keratinized tissues</p> Signup and view all the answers

    Which characteristic is associated with Microsporum audouinii?

    <p>Greenish-yellow fluorescence under Wood's ultra-violet light</p> Signup and view all the answers

    What is a distinctive feature of Epidermophyton floccosum colonies?

    <p>White pleomorphic tufts of mycelium in older cultures</p> Signup and view all the answers

    What type of infection is typically caused by Microsporum audouinii?

    <p>Non-inflammatory infections of the scalp in children</p> Signup and view all the answers

    Which statement is true about the reverse pigment of Microsporum audouinii?

    <p>Yellowish-brown to reddish-brown color</p> Signup and view all the answers

    What type of hyphae may be present in Microsporum audouinii infections?

    <p>Racquet hyphae</p> Signup and view all the answers

    What method is used for the diagnosis of dermatophyte infections like those caused by Epidermophyton floccosum?

    <p>Clinical examination</p> Signup and view all the answers

    What is the medical significance of the plasma membrane in fungi?

    <p>Some antifungals disrupt its function, leading to fungal cell death.</p> Signup and view all the answers

    Which antifungal drug targets the synthesis of ergosterol, a key component of the fungal plasma membrane?

    <p>Fluconazole</p> Signup and view all the answers

    What is the medical significance of hyphal growth in pathogenic fungi?

    <p>It is associated with invasive and tissue-damaging properties.</p> Signup and view all the answers

    Which fungal species can cause severe lung infections in immunocompromised individuals by forming invasive hyphae?

    <p>Aspergillus</p> Signup and view all the answers

    What is the medical significance of yeast cells in causing infections?

    <p>Yeast forms can cause infections, especially in immunocompromised individuals.</p> Signup and view all the answers

    Which reproductive structures are involved in the transmission and establishment of fungal infections?

    <p>Conidia and spores</p> Signup and view all the answers

    What is the purpose of subculturing isolated colonies onto fresh culture media?

    <p>To obtain a pure culture for further characterization</p> Signup and view all the answers

    What is the main step involved in identification after subculturing?

    <p>Microscopic examination of the isolated fungus</p> Signup and view all the answers

    What type of media is commonly used for culturing dermatophytes and related fungi like Piedraia hortae?

    <p>Sabouraud dextrose agar supplemented with antibiotics and cycloheximide</p> Signup and view all the answers

    What temperature range is typically maintained during the incubation of the inoculated culture plates?

    <p>25-30°C</p> Signup and view all the answers

    What is the main recommendation for preventing contamination during culturing?

    <p>Maintain good personal hygiene</p> Signup and view all the answers

    Why is it important to pluck hair with nodules during sample collection?

    <p>To prevent the spread of infection</p> Signup and view all the answers

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