Encyclopedia of Parasitology

Living Edition
| Editors: Heinz Mehlhorn

Entamoeba gingivalis

  • Heinz Mehlhorn
Living reference work entry
DOI: https://doi.org/10.1007/978-3-642-27769-6_3843-1


Greek: enteron = intestine; amoibe = change; Latin: gingiva = gingiva, gums.

Geographic Distribution/Epidemiology

Worldwide, common; especially frequent in cases of lacking or reduced mouth hygiene.

Morphology/Life Cycle

This amoeba, which reaches a size of 5–30 μm, is found in dental plaques of more than 50 % of the world population. The trophozoites show a strict separation of the hyaline ectoplasm from the granular endoplasm, which contains the cell organelles and the food vacuoles. The nucleus looks similar to that of Entamoeba histolytica, since the nucleoplasm is condensed at the periphery of the nucleus and the nucleolus is also situated centrally. Feeding is done by phagocytosis of bacterial and host cellular remnants especially in cases of inflammations. Cysts had never been observed and the membrane bound trophozoites do not survive the passage of the intestine. Thus transmission must run on oral contact during kissing or due to common use of spoons, teeth brushes, etc.



Periodontal Disease World Population Microscopical Investigation Oral Hygiene Cell Organelle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Further Reading

  1. Lucht E et al (1998) Entamoeba gingivalis in human immunodeficiency virus type 1-infected patients with periodontal disease. Clin Infect Dis 27:471–473CrossRefPubMedGoogle Scholar
  2. Trim RD et al (2011) Use if PCR to detect Entamoeba gingivalis in diseased gingival pockets and demonstrate its absence in healthy gingival sites. Parasitol Res 109:857–864CrossRefPubMedGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Institut für Zoomorphologie, Zellbiologie und ParasitologieHeinrich-Heine-UniversitätDüsseldorfGermany