Porphyromonadaceae
The Porphyromonadaceae are a family of bacteria. The type genus is Porphyromonas. Some types can cause periodontal disease.
Appearance
Many species have rod-shaped cells, some are more like cocci, ie are more spherical. Tannerella forsythia has fusiform ( spindle-shaped ) rods. The rods of Paludibacter have round or slightly pointed ends. The species are not motile.
Growth and metabolism
All members of the Porphyromonadaceae are chemo- organotroph. The metabolic pathway is the fermentation in the rule.
Most of the anaerobic species, some, such as types of Dysgonomonas also show growth in the presence of oxygen ( a facultative anaerobe ). The majority is saccharolytic, that is, they are able to ferment carbohydrates. An exception is, for example Proteiniphilum.
Pathogenicity
The species Porphyromonas gingivalis can cause periodontal disease. With bad breath it is associated. Porphyromonas endodontalis is mostly isolated from infected Wurzelkanälchen. Tannerella forsythia may also be involved in periodontal disease. Odoribacter denticanis, the type is associated with periodontal disease.
Recent studies suggest that Porphyromonas gingivalis is an enzyme which citrulliniert certain proteins, resulting in the formation of autoantibodies could promote that cause rheumatoid arthritis.
System
The Porphyromonadaceae family will be provided to the order Bacteroidales in the Department of Bacteroidetes. The following genera belong to the family:
- Barnesiella Sakamoto et al. 2007 emend. Morotomi et al. 2008
- Butyricimonas Sakamoto et al. 2009
- Dysgonomonas Hofstad et al. 2000
- Macellibacteroides Jabari et al. 2012
- Odoribacter Hardham et al. 2008
- Paludibacter Ueki et al. 2006
- Parabacteroides Sakamoto and Benno 2006
- Petri Mona Grabowski et al. 2005
- Porphyromonas Shah and Collins 1988 emend. Willems and Collins 1995
- Proteiniphilum Chen and Dong 2005
- Tanner Ella Sakamoto et al. 2002
The genus Oribaculum 1995 reclassified as Porphyromonas.