Actinomyces radicidentis

Actinomyces radicidentis is a species in the genus Actinomyces, first isolated from infected root canals of teeth. Once characterized, it has since been found to be present in failed root canal treatments.[3] Its pathogenicity has been suggested to be due to an ability to form cell aggregates, held together by embedding in an extracellular matrix in host tissues. Like other pathogenic Actinomyces, by collectively finding itself in a protected biofilm environment can evade elimination by host defenses, including phagocytosis.[4]

Actinomyces radicidentis
Scientific classification
Domain: Bacteria
Phylum: Actinomycetota
Class: Actinomycetia
Order: Actinomycetales
Family: Actinomycetaceae
Genus: Actinomyces
Species:
A. radicidentis
Binomial name
Actinomyces radicidentis
Collins et al. 2001[1]
Type strain
CCUG 36733[2]
CIP 106352
DSM 15433

References
  1. M. D. Collins; L. Hoyles; S. Kalfas; G. Sundquist; T. Monsen; N. Nikolaitchouk; E. Falsen (September 2000). "Characterization of Actinomyces isolates from infected root canals of teeth: Description of Actinomyces radicidentis sp. nov". Journal of Clinical Microbiology. 38 (9): 3399–3403. doi:10.1128/JCM.38.9.3399-3403.2000. PMC 87393. PMID 10970390.
  2. Euzéby JP, Parte AC. "Actinomyces radicidentis". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved May 11, 2022.
  3. Kalfas, Sotirios; Figdor, David; Sundqvist, Göran (2001). "A new bacterial species associated with failed endodontic treatment: Identification and description of Actinomyces radicidentis". Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology. 92 (2): 208–214. doi:10.1067/moe.2001.117268. ISSN 1079-2104. PMID 11505269. S2CID 23232402.
  4. Nair, P.N.R.; Brundin, Malin; Sundqvist, Göran; Sjögren, Ulf (2008). "Building biofilms in vital host tissues: a survival strategy of Actinomyces radicidentis" (PDF). Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology. 106 (4): 595–603. doi:10.1016/j.tripleo.2008.05.001. ISSN 1079-2104. PMID 18602301.

Further reading
  • Whitman, William B., et al., eds. Bergey's manual® of systematic bacteriology. Vol. 5. Springer, 2012.
  • Siqueira, José F.; Rôças, Isabela N. (2003). "Polymerase chain reaction detection of Propionibacterium propionicus and Actinomyces radicidentis in primary and persistent endodontic infections". Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology. 96 (2): 215–222. doi:10.1016/s1079-2104(03)00158-6. PMID 12931096.
  • Hirshberg, Abraham; et al. (2003). "Periapical actinomycosis: a clinicopathologic study". Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology. 95 (5): 614–620. doi:10.1067/moe.2003.87. PMID 12738954.


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