Fungal Infections and Anti-Fungal Drugs
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Questions and Answers

What is the most common opportunistic fungal infection?

  • Zygomucor
  • Pneumocystis Carinii Pneumonia
  • Candidiasis (correct)
  • Aspergillosis
  • Which antifungal drug is used to treat mucocutaneous candidiasis?

  • Nystatin (correct)
  • Amphotericin B
  • Ketoconazole
  • Griseofulvin
  • What is the mechanism of action of Ketoconazole?

  • Inhibits ergosterol synthesis (correct)
  • Inhibits microtubule synthesis
  • Inhibits lanosterol C14 demethylase
  • Binds to ergosterol
  • What is the name of the fungus that causes rhinocerebral syndrome?

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

    What is the treatment of choice for Cryptococcosis and Candida lusetaniae?

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

    What is the oldest known antifungal drug?

    <p>Amphotericin B</p> Signup and view all the answers

    What is the adverse effect of Amphotericin B?

    <p>Reversible Azotemia</p> Signup and view all the answers

    Where do RNA viruses typically replicate?

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

    What is a characteristic of RNA viruses that makes them prone to mutation?

    <p>They have a high mutation rate due to lack of proofreading during replication</p> Signup and view all the answers

    Which of the following viruses is known to cause fifth disease?

    <p>Parvovirus B19</p> Signup and view all the answers

    What is the primary mechanism of replication for RNA viruses?

    <p>Encoding an RNA-dependent RNA polymerase</p> Signup and view all the answers

    Which of the following viruses is a member of the Hepadnaviridae family?

    <p>Hepatitis B virus</p> Signup and view all the answers

    What is the name of the disease caused by the Varicella-zoster virus?

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

    Which of the following viruses is known to cause hand-foot-mouth disease?

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

    What is the name of the virus that causes Norwalk virus syndrome?

    <p>Norwalk virus</p> Signup and view all the answers

    What is the term for a fungal infection that affects the skin, hair, and nails?

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

    Which fungus causes Chromomycosis?

    <p>Fonseceae spp</p> Signup and view all the answers

    What is the name of the disease caused by Sporothrix shenckii?

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

    What is the term for fungal infections that affect deep tissues, such as the lungs and brain?

    <p>Systemic mycoses</p> Signup and view all the answers

    What is the name of the fungal infection that is also known as Spelunker's Disease?

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

    Which fungal infection is common among patients with AIDS?

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

    What is the term for fungal infections that affect the skin and mucous membranes?

    <p>Mucocutaneous Candidiasis</p> Signup and view all the answers

    What is the name of the fungal infection that is also known as North American Blastomycosis?

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

    What is the transmission route of Trichomonas vaginalis?

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

    What is the treatment for Chagas disease?

    <p>Nifurtimox and Benzonidazole</p> Signup and view all the answers

    What is the disease caused by Leishmania donovani?

    <p>Visceral leishmaniasis</p> Signup and view all the answers

    What is the transmission route of Pneumocystis jiroveci?

    <p>Cough droplets</p> Signup and view all the answers

    What is the treatment for Toxoplasma gondii?

    <p>Sulphonamides, pyrimethamine, possibly spiramycin</p> Signup and view all the answers

    What is the disease caused by Babesia microti?

    <p>Hemolytic anemia</p> Signup and view all the answers

    What is the treatment for Isospora belli?

    <p>Sulpha drugs</p> Signup and view all the answers

    What is the transmission route of Plasmodium falciparum?

    <p>Female anopheline mosquito</p> Signup and view all the answers

    What is the transmission method of Taenia saginata?

    <p>Cyst in beef</p> Signup and view all the answers

    What is the treatment for Echinococcus granulosus?

    <p>Surgery, formalin injection, and drainage</p> Signup and view all the answers

    Which organism is responsible for elephantiasis?

    <p>Brugia malayi</p> Signup and view all the answers

    What is the primary symptom of Schistosoma hematobium infection?

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

    What is the treatment for Fasciolopsis buski infection?

    <p>Praziquantel only</p> Signup and view all the answers

    What is the primary symptom of Diphyllobothrium latum infection?

    <p>Cough with dry or rusty brown sputum</p> Signup and view all the answers

    What is the treatment for Taenia solium infection?

    <p>Praziquantel only</p> Signup and view all the answers

    Which organism is responsible for Cysticercosis?

    <p>Taenia solium</p> Signup and view all the answers

    Study Notes

    Fungal Infections

    • Candidiasis: most common opportunistic fungal infection, acquired through inhalation and IV catheters
    • Aspergillosis: causes asthma-like condition
    • Zygomycosis: causes rhinocerebral syndrome
    • Pneumocystis Carinii Pneumonia (PCP): leading cause of death for AIDS patients

    Treatment of Fungal Infections

    • Superficial Mycoses:
      • Griseofulvin: unknown MOA, proposed to inhibit microtubule synthesis
      • Nystatin: binds to ergosterol, DOC for mucocutaneous candidiasis
      • Azoles: inhibit ergosterol synthesis, examples include Ketoconazole, Clotrimazole, and Tioconazole
    • Systemic Mycoses:
      • Amphothericin B: oldest known antifungal, DOC for systemic mycoses
      • Azoles: alternative to Amphothericin B
    • Life-Threatening Mycoses:
      • Amphothericin B: binds to ergosterol, DOC for hospital-acquired fungal infections and all systemic infections
      • Itraconazole: alternative to Amphothericin B

    Viral Infections

    • RNA Viruses:
      • Replicate in cytoplasm
      • Genome structure determines mechanism of transcription and replication
      • Prone to mutation
    • DNA Viruses:
      • Examples include Parvoviridae, Papovaviridae, Hepadnaviridae, Herpesviridae, Poxviridae
    • Classification of Viruses:
      • RNA (Naked) Viruses
      • RNA (Enveloped) Viruses
      • DNA (Naked) Viruses
      • DNA (Enveloped) Viruses

    Mycoses

    • Dermatomycoses/Mucocutaneous Candidiasis:
      • Manifests as oral thrush, vaginitis, and diaper rash
    • Subcutaneous Mycoses:
      • Chromomycosis: caused by Fonseceae spp, Cladosporium spp, and Phialophora spp
      • Mycetoma: caused by Pseudallescheria boydii and Nocardia brasiliensis
      • Sporotrichosis: caused by Sporothrix schenckii
    • Systemic/Deep Mycoses:
      • Primary Pathogens:
        • Coccidioidomycosis: caused by Coccidioides immitis
        • Histoplasmosis: caused by Histoplasma capsulatum
        • Blastomycosis: caused by Blastomyces dermatitidis
        • Paracoccidioides: caused by Paracoccidioides brasiliensis
      • Opportunistic Pathogens:
        • Cryptococcosis: caused by Cryptococcus neoformans
        • Cryptosporidiosis: caused by Cryptosporidium parvum

    Protozoa

    • Blood and Tissue Protozoa:
      • Trypanosoma brucei: causes sleeping sickness
      • Trypanosoma cruzi: causes Chagas disease
      • Leishmania donovani: causes visceral leishmaniasis
      • Plasmodium falciparum: causes malaria
      • Toxoplasma gondii: causes toxoplasmosis
      • Babesia microti: causes babesiosis

    Cestodes

    • Taenia saginata: causes taeniasis
    • Taenia solium: causes cysticercosis
    • Echinococcus granulosus: causes echinococcosis
    • Echinococcus multilocularis: causes alveolar echinococcosis

    Trematodes

    • Schistosoma mansoni: causes schistosomiasis
    • Schistosoma japonicum: causes schistosomiasis
    • Schistosoma hematobium: causes schistosomiasis
    • Fasciolopsis buski: causes fasciolopsiasis
    • Diphyllobothrium latum: causes diphyllobothriasis

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    Description

    This quiz covers various types of fungal infections, including candidiasis, aspergillosis, and zygomycosis, along with their causes, symptoms, and treatment options. It also includes information on anti-fungal drugs and their mechanisms of action.

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