Opportunistic fungi Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Question | Answer |
Name the 4 Aspergillus organisms. | A. fumigatus A. flavus A. niger A. terreus |
What is the difference between uniseriate and biseriate fungi? | Uniseriate - phialides are directly attached to the vescicle Biseriate - Phialides are attached to the metula which sit on the phialides |
What is the general growth rate of Aspergillus species? | Rapid - 7 days |
Describe the hyphae of Aspergillus. | Septate and hyaline |
Which Aspergillus species has a blue to green suede colony and is the most important pathogen in the Aspergillus family? Where does this organism come from? | A. fumigatus - found in soil and dust. Usually associated with construction. |
Describe the microscopic appearance of A. fumigatus. | Uniceriate Columnar conidia covering top of vesicle Smooth conidiophore |
What is the second most common Aspergillus species? What is the colony's appearance of the organism? | A. flavus - lime green colony |
This Aspergillus species has a rough conidiophore, is biseriate, completely covered vesicle, and lime-green conidia. | A. flavus |
Which Aspergillus species has a salt & pepper colony appearance? | A. niger |
What is the microscopic appearance of A. niger? | Smooth hyaline conidiophore Biseriate with entire covering of vesicle Dark conidia Sometimes dark metula |
Which Aspergillus species is most commonly associated with ear infections? | A. niger |
This Aspergillus species is resistant to normal treatment for fungus like Amphitoceran B. | A. terreus |
What is does the colony of A. terreus look like? | Tan,cinnamon-colored appearance |
This Aspergillus species microscopically has smooth conidiophores, is biseriate with multiple phialides on each metula, and slightly yellow conidia. | A. terreus |
What is the route of transmission for Aspergillus species? | Airborne transmission usually associated with construction or renovations |
How do Aspergillus species cause disease? | Conidia invade pulmonary cavities to become invasive. Granulocytopenia is the biggest risk for invasive disease especially in bone marrow patients. |
What are 3 clinical manifestations in the form of hypersensitivity lung disease? | 1. Asthma 2. Alveolitis "farmers' lung" 3. Bronchopulmonary Aspergillosis |
What are other clinical manifestations that may occur from Aspergillus species? | 1. Mycetomata "fungus balls" 2. Dissemination to CNS and organ systems 3. Eye infection secondary to trauma 4. Ear infection 5. Sinus infection 6. Osteomyelitis |
Which opportunistic fungi is a common contaminant? | Penicillium |
Penicillium commonly causes which 2 diseases? | Keratitis and endocarditis |
What are the general characteristics of a Penicillium colony? | Fast growing Shades of green |
Describe the microscopic appearance of Penicillium. | Conidiophore are rough or smooth Phialides are slightly elongated Conidia are variable: Round to eliptical Smooth to rough May have greenish-blue coloring or may be hyaline |
True or False: Paecilomyces lilacinus causes problems in healthy individuals. | False - this can easily cause deadly diseases in immunocompromised patients. |
This organism is resistant to nearly everything except ketoconizole. | Paecilomyces lilacinus |
This is a non-dermatophyte that may cause nail diseases. | Paecilomyces lilacinus |
What are 3 complications associated with Paecilomyces lilacinus? | 1. Keratitis 2. Endocarditis 3. Sinusitis |
Is Paecilomyces lilacinus a fast or slow growing fungus? | Fast |
What organism has phialides with tapered or a long neck appearance, long chains of oval conidia, with some rough walled conidiophores? | Paecilomyces lilacinus |
Keratitis, osteomyelitis, and infections in bone marrow transplansts are complications caused by what fungus? | Fusarium |
Describe the colony characteristics of Fusarium. | Fast growing pale or brightly colored cottony colony. |
Which organism has macroconidia with a green bean appearance? What do the microconidia of this organism look like? | Fusarium. Microconidia are short with 2-3 cells. |
In what culture do we usually find Fusarium species? | Blood culture |
People who wear extended wear contacts may be at higher risk of this fungus. | Fusarium |
Which organism appears as a yeast but has no true yeast form? | Fusarium |
This disease is caused by inhalation of the organism. Dissemination occurs rapidly to eyes and sinuses and skin lesions form all over the body. | Fusariosis |
True or False: Pythiosis occurs only in humans. | False - this is commonly found in animals that graze in swamp lands |
Where is Pythium insidiosum found and how does it gain access to the body? | Stagnant water, gaining access through the sinuses |
General characteristics of this group of organisms includes: Sparsely septate ribbon like hyphae, rhizoids, and sporangiophores. | Zygomycetes |
What to Zygomycete colonies look like? | Rapid growing Lid-Lifters Cotton-candy like White to grey coloration |
What population is most supsceptible to Zygomycete infections? | Diabetics - particularly those in ketoacidosis or those who do not manage their insulin levels |
This organism can grow within 24 hours and likes higher temps affecting the brain. | Zygomycete species. |
Created by:
1042984298
Popular Laboratory Science sets