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Acanthamoeba

Lisa A. Spacek, M.D., Ph.D.
Acanthamoeba is a topic covered in the Johns Hopkins ABX Guide.

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MICROBIOLOGY

  • Free-living amoeba known to infect humans.[4]
    • Ubiquitous; isolated worldwide from soil, air, fresh & salt water.
  • Eukaryotic, shares homologies with mammalian cells.[5]
  • 2 stage life cycle:
    1. trophozoite, actively feeding & dividing and
    2. dormant cyst, double-walled and wrinkled cyst, is resistant to chlorine and antibiotics. Encystation occurs under stress.
  • Described as “Trojan horses,” they can harbor intracellular bacteria, known as endosymbiosis.[9]
  • Laboratory culture: mumber of options available, discuss with microbiology lab.
    • Non Nutrient Agar (NNA) and lawn of E. coli.
    • PYG (Peptone, Yeast Extract and Glucose)
      • Axenic culture, incubated on a rotary shaker with an acentric rotation of 3 cm (120 rpm/
        min) at 28 C. Other variations also.
    • Jensen media

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Last updated: October 25, 2016

Citation

Spacek, Lisa A. "Acanthamoeba." Johns Hopkins ABX Guide, The Johns Hopkins University, 2016. Johns Hopkins Guide, www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540002/all/Acanthamoeba.
Spacek LA. Acanthamoeba. Johns Hopkins ABX Guide. The Johns Hopkins University; 2016. https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540002/all/Acanthamoeba. Accessed May 26, 2019.
Spacek, L. A. (2016). Acanthamoeba. In Johns Hopkins ABX Guide. Available from https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540002/all/Acanthamoeba
Spacek LA. Acanthamoeba [Internet]. In: Johns Hopkins ABX Guide. The Johns Hopkins University; 2016. [cited 2019 May 26]. Available from: https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540002/all/Acanthamoeba.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC T1 - Acanthamoeba ID - 540002 A1 - Spacek,Lisa,M.D., Ph.D. Y1 - 2016/10/25/ BT - Johns Hopkins ABX Guide UR - https://www.hopkinsguides.com/hopkins/view/Johns_Hopkins_ABX_Guide/540002/all/Acanthamoeba PB - The Johns Hopkins University DB - Johns Hopkins Guide DP - Unbound Medicine ER -