Chlamydia-like obligate parasite of free-living amoebae

  title={Chlamydia-like obligate parasite of free-living amoebae},
  author={R. J. Birtles and TJ Rowbotham and Charles Storey and T. J. Marrie and Didier Raoult},
  journal={The Lancet},
Stellungnahme der ZKBS zur Risikobewertung von Parachlamydia acanthamoebae
  • 2012
Parachlamydia acanthamoebae ist ein obligat intrazellulär lebendes Bakterium der Familie der Parachlamydiaceae. Es wurde in Amöben wie z. B. Acanthamoebae spp. entdeckt, die sowohl bei einem Ausbruch
Amibes libres de l’environnement : résistance aux traitements de désinfection et interactions avec les Chlamydiales
Les amibes appartenant au genre Acanthamoeba sont ubiquitaires et responsables de diverses infections, en particulier de keratite amibienne. Par ailleurs elles sont resistantes a de nombreux
Amoebal pathogens as emerging causal agents of pneumonia.
The current evidence for the emerging pathogenic role of various amoebae-resisting microorganisms as agents of RTIs in humans is reviewed and Legionella-likeAmoebal pathogens, novel Chlamydiae, waterborne mycobacteria and Bradyrhizobiaceae are discussed.
Conserved indels in essential proteins that are distinctive characteristics of Chlamydiales and provide novel means for their identification.
A number of molecular signatures are described that consist of conserved inserts and deletions in widely distributed proteins that are distinctive characteristics of all available chlamydiae homologues and provide evidence that divergence between the traditional Chlamydiaceae species and the other chlamyde families occurred very early in the evolution of this group of bacteria.
Microorganisms Resistant to Free-Living Amoebae
Free-living amoebae represent an important reservoir of ARB and may, while encysted, protect the internalized bacteria from chlorine and other biocides, and represent a useful tool for the culture of some intracellular bacteria and new bacterial species that might be potential emerging pathogens.
Parachlamydiaceae: Potential Emerging Pathogens
Arguments supporting a pathogenic role are that Chlamydia pneumoniae, a well-recognized agent of pneumonia, was shown to infect free-living amoebae and that another member of the Chlamydiales, Simkania negevensis, has caused pneumonia in adults and acute bronchiolitis in infants.
The role of the putative antifeeding prophage of Amoebophilus asiaticus during infection
Es konnte gezeigt werden, dass das “prophage tail sheath”-Gen in der extrazellularen and intrazellULaren Phase differentiell exprimiert wird.
Endosymbiotic bacterium Protochlamydia can survive in acanthamoebae following encystation.
Results demonstrated that Protochlamydia could survive in acanthamoebae following encystation, and suggest that amoeba cysts might be further studied in order to understand their role in the environmental survival of endosymbionts.
Recovery of an environmental Chlamydia strain from activated sludge by co-cultivation with Acanthamoeba sp.
The recovery of a novel environmental chlamydia strain from activated sludge by co-cultivation with Acanthamoeba sp.


Microbiological and Serological Studies of an Outbreak of “Humidifier Fever” in a Print Shop
The aerosolization of microorganisms can occur in a variety of environments, and in certain situations can induce pulmonary reactions in exposed persons. One example of this situation occurs in the
Phylogenetic diversity of intra-amoebal legionellae as revealed by 16S rRNA gene sequence comparison.
LLAPs do not represent a unique species or even a single line of descent within the genus Legionella, and investigation of more isolates may reveal them to be as evolutionarily diverse as the other presently recognized Legionella species.
Obligate intracellular bacterial parasites of acanthamoebae related to Chlamydia spp
The phylogeny of obligate intracellular coccoid parasites of acanthamoebae isolated from the nasal mucosa of humans was analyzed by the rRNA approach and the results suggest that small amoebae could be environmental reservoirs and vectors for a variety of potentially pathogenic bacteria including members of the Chlamydiaceae.