What are the main free-living amoebas with clinical importance? Naegleria fowleri is a thermophilic amoeba that can multiply in temperatures up to...
What are the main free-living amoebas with clinical importance?
Naegleria fowleri is a thermophilic amoeba that can multiply in temperatures up to 45°C and is usually found in hot springs and poorly chlorinated heated pools.
Acanthamoeba and Balamuthia have a life cycle with cyst and trophozoite forms, both uninucleated with a large nucleolus.
The trophozoites of Acanthamoeba have thin and filamentous pseudopods called acanthopodia and can act as hosts for pathogenic bacteria such as Legionella spp.
Balamuthia mandrillaris is the only free-living amoeba that can cause keratitis, a severe infectious process that affects the cornea.
The cist of Naegleria fowleri has a double wall with one or two pores and a single nucleus with a voluminous nucleolus.
a) I, II and III are correct.
b) II, III and IV are correct.
c) I, III and V are correct.
d) II, III and V are correct.
e) II, IV and V are correct.
Naegleria fowleri is a thermophilic amoeba that can multiply in temperatures up to 45°C and is usually found in hot springs and poorly chlorinated heated pools.
Acanthamoeba and Balamuthia have a life cycle with cyst and trophozoite forms, both uninucleated with a large nucleolus.
The trophozoites of Acanthamoeba have thin and filamentous pseudopods called acanthopodia and can act as hosts for pathogenic bacteria such as Legionella spp.
Balamuthia mandrillaris is the only free-living amoeba that can cause keratitis, a severe infectious process that affects the cornea.
The cist of Naegleria fowleri has a double wall with one or two pores and a single nucleus with a voluminous nucleolus.
a) I, II and III are correct.
b) II, III and IV are correct.
c) I, III and V are correct.
d) II, III and V are correct.
e) II, IV and V are correct.
💡 1 Resposta
Ed 
A alternativa correta é a letra D) II, III e V estão corretas. A resposta correta é baseada nas informações fornecidas na descrição da pergunta. Naegleria fowleri, Acanthamoeba e Balamuthia são as três principais amebas de vida livre com importância clínica. Naegleria fowleri é encontrada em fontes termais e piscinas aquecidas mal cloradas, enquanto Acanthamoeba e Balamuthia têm um ciclo de vida com formas de cisto e trofozoíto. A descrição também afirma que Balamuthia mandrillaris é a única ameba de vida livre que pode causar ceratite, uma infecção grave que afeta a córnea. Portanto, as alternativas II, III e V estão corretas.
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