Peptostreptococcus [1] ( lat. Peptostreptococcus ) is a genus of anaerobic gram - positive non - spore - forming bacteria from the family Peptostreptococcaceae . Small cells of a spherical shape, detectable in the form of short chains . Usually move using cilia [2] .
| Peptostreptococcus | |||||||||||||
 The characteristic growth of representatives of the genus peptostreptococci | |||||||||||||
| Scientific classification | |||||||||||||
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| International scientific name | |||||||||||||
Peptostreptococcus Kluyver and van Niel 1936 emend. Ezaki et al. 2001 | |||||||||||||
Peptostreptococci are slowly growing bacteria with increased resistance to antimicrobial agents [3] .
Peptostreptococci are sensitive to beta-lactam antibiotics [4] .
Content
Pathogenesis
Peptostreptococci belong to the normal microflora of a person, living in the oral cavity , on the skin , in the intestine (mainly in the colon ) and the vagina [5] [6] , the respiratory tract of healthy people, accounting for 13 to 18% of all gram-positive people anaerobic cocci .
Refers to opportunistic microflora, and manifests itself in immunodepression or trauma to adjacent tissues with septic complications.
They are isolated with high frequency from all samples. Anaerobic gram-positive cocci, such as Peptostreptococcus , are the second most frequently restored anaerobes and comprise about one quarter of the anaerobic isolates found. Most often, anaerobic gram-positive cocci usually recover together with other anaerobic or aerobic bacteria from various infections in different places of the human body. This contributes to the difficulty in isolating peptostreptococcal organisms [7] .
Virulence
Peptostreptococcus is the only genus among anaerobic gram-positive cocci that are found in clinical infections. Thus, peptostreptococcus species are considered as clinically significant anaerobic cocci. Other similar clinically relevant anaerobic cocci include Veillonella species (gram-negative cocci) and microaerophilic streptococci (aerotolerant). Anaerobic gram-positive cocci include various clinically significant species of the genus Peptostreptococcus [8] .
Abdominal infections
Anaerobic gram-positive cocci are part of normal gastrointestinal commensals. They are isolated in approximately 20% of cases of intra-abdominal infections such as peritonitis. Found in abscesses of the liver, spleen and abdominal cavity. As in the upper respiratory tract and dental infections, anaerobic gram-positive cocci are restored in a mixture with other bacteria. In this case, they mix with organisms of intestinal origin, such as E. coli , the group of bacteroid fragilis and clostridia [7] [8] .
Views
Species of P. asaccharolyticus, P. magnus, P. micros, P. prevotii, P. vaginalis, previously included in the genus peptostreptococcus , according to modern concepts, are renamed and transferred to other genera: Peptoniphilius asaccharolyticus, Finegoldia magnus, Micromonas micros , Anaerococcus prevotii, Anaerococcus vaginalis, respectively.
- Peptostreptococcus anaerobius
- Peptostreptococcus harei
- Peptostreptococcus hydrogenalis
- Peptostreptococcus indoliticus
- Peptostreptococcus ivorii
- Peptostreptococcus lacrimalis
- Peptostreptococcus lactolyticus
- Peptostreptococcus octavius
- Peptostreptococcus tetradius
Notes
- ↑ Atlas of Medical Microbiology, Virology, and Immunology: A Textbook for Medical Students / Ed. A. A. Vorobyov , A. S. Bykov . - M .: Medical News Agency, 2003. - P. 40. - 236 p. - ISBN 5-89481-136-8 .
- ↑ Sherris Medical Microbiology / Ryan KJ. - 4th. - McGraw Hill, 2004 .-- ISBN 0-8385-8529-9 .
- ↑ Higaki S., Kitagawa T., Kagoura M., Morohashi M., Yamagishi T. Characterization of Peptostreptococcus species in skin infections (English) // J Int Med Res: journal. - 2000. - Vol. 28 , no. 3 . - P. 143-147 . - DOI : 10.1177 / 147323000002800305 . - PMID 10983864 .
- ↑ Brook I. 2007. Treatment of anaerobic infection. Expert Rev Anti Infect Ther. 5 : 991-1006.
- ↑ Hoffman, Barbara. Williams gynecology. - 2nd. - New York: McGraw-Hill Medical, 2012 .-- P. 65. - ISBN 0071716726 .
- ↑ Senok Abiola C., Verstraelen Hans, Temmerman Marleen, Botta Giuseppe A., Senok Abiola C. Probiotics for the treatment of bacterial vaginosis (Eng.) // Cochrane Database Syst Rev: journal. - 2009. - No. 4 . - P. CD006289 . - DOI : 10.1002 / 14651858.CD006289.pub2 . - PMID 19821358 .
- ↑ 1 2 Finegold SM Anaerobic Bacteria in Human Disease. Orlando, Fla: Academic Press; 1977.
- ↑ 1 2 Brook I. Anaerobic Infections. In: Diagnosis and Management. 4th Edition. New York: Informa Healthcare USA Inc .; 2007.