What is Peptostreptococcus infection?

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Peptostreptococcus can cause brain, liver, breast, and lung abscesses, as well as generalized necrotizing soft tissue infections. They participate in mixed anaerobic infections, a term which is used to describe infections that are caused by multiple bacteria that do not require or may even be harmed by oxygen.

What causes Peptostreptococcus?

Anaerobic infections in the skin and soft tissue can be caused by the cutaneous anaerobic flora, mainly Peptostreptococcus, but are most often caused by contamination with the flora from adjacent mucosal surfaces.

How is Peptostreptococcus treated?

Penicillin G is most effective for treating anaerobic gram-positive cocci and microaerophilic streptococci. Other effective agents include other penicillins, cephalosporins, chloramphenicol, clindamycin, vancomycin, telithromycin, linezolid, quinupristin/dalfopristin, and carbapenems.

What antibiotics treat Peptostreptococcus?

Oral therapy for peptostreptococci is often substituted for parenteral therapy. Oral agents include clindamycin, amoxicillin and clavulanate, and chloramphenicol.

Where is Peptococcus found?

These organisms are part of the normal flora of the mouth, upper respiratory tract, intestinal tract, vagina and skin. These organisms can be isolated in all types of anaerobic infection.

Where is Fusobacterium found?

Fusobacterium are usually found as part of the normal oral, gastrointestinal and genital flora, but may induce septic thrombophlebitis in the neighboring neck vessels when the infection is associated with an oropharyngeal abscess.

Is Peptostreptococcus a type of streptococcus?

Anaerobic gram-positive cocci that produce large amounts of lactic acid during the process of carbohydrate fermentation were reclassified as Streptococcus parvulus and Streptococcus morbillorum from Peptococcus or Peptostreptococcus. Most of these organisms are anaerobic, but some are microaerophilic.

Is Peptostreptococcus a type of Streptococcus?

Is Peptostreptococcus gram-positive?

Peptostreptococcus are anaerobic Gram-positive cocci which appear in chains in a Gram stain.

What diseases does Fusobacterium cause?

Fusobacterium species are anaerobic, elongated, gram-negative rods. There are multiple species of Fusobacterium, but the one most associated with human disease is F. necrophorum, a cause of periodontal disease, tonsillitis, peritonsillar abscess, and thrombophlebitis of the jugular vein (Lemierre syndrome).

Who discovered Fusobacteria?

The genus Fusobacterium is a group of obligate anaerobic gram-negative bacilli responsible for causing LS—an entity first described by Courmont and Cade in 1900, which subsequently acquired its eponym following a published review of 20 affected patients by Dr Andre Lemierre.

Is Peptostreptococcus a Gram positive cocci?

Peptostreptococcus species that are found in clinical infections were once part of the genus formerly known as Peptococcus. Peptostreptococcus is the only genus among anaerobic gram-positive cocci that is encountered in clinical infections. As such, Peptostreptococcus species are viewed as being clinically significant anaerobic cocci.

What is the most common source of bacteremia in peptostreptococcus infections?

The most frequent source of bacteremia due to Peptostreptococcus are infections of the oropharynx, lower respiratory tract, female genital tract, abdomen, skin, and soft tissues.

Is Peptostreptococcus anaerobic or aerobic?

Anaerobic Cocci Peptostreptococcusare anaerobic Gram-positive cocci which appear in chains in a Gram stain. The cocci are much smaller and slower growing than the aerobic Gram-positive cocci. Veilonellais anaerobic Gram-negative cocci which can look like Neisseriaspecies on Gram stain.