ISSN 2398-2942      

Pseudomonas aeruginosa

icanis
Contributor(s):

Richard Walker

Synonym(s): P. aeruginosa


Introduction

Classification

Taxonomy

  • Family: Pseudomonaceae.
  • Genus: Pseudomonas.
  • Species: aeruginosa.

Etymology

  • Pseudomonas: Gk: pseudes - false; monas - a unit.
  • Aeruginosa: Latin - full of copper rust or verdigris, hence green.

Active Forms

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Clinical Effects

Epidemiology

Habitat

  • Human and animal gastrointestinal tract, water, soil and sewage.
  • Ubiquitous in environment, especially in damp, poorly ventilated areas.
  • May be carried in the intestinal tract of healthy animals.

Lifecycle

  • Multiplies in environment by binary fission. Non spore-forming.

Transmission

  • Infection may be endogenous or exogenous.

Pathological effects

  • Immunodeficiency, trauma and antibiotic therapy all predispose to infection with P. aeruginosa.
  • P. aeruginosa has pili → adherence to epithelial cells.
  • Exotoxins, endotoxin and extracellular products - all may play a role in pathogenesis.
  • Some strains have an antiphagocytic capsule.
  • Causes wide variety of infections in many species, eg mastitis in cattle, sheep and goats, metritis in horses, skin infections in cattle, and necrotic lesions in reptiles.

Other Host Effects

  • Widely found in the environment and as part of the normal flora of the gastrointestinal tract and mucous membranes of animals.

Control

Control via animal

  • Strict hygiene.
  • Judicious use of antimicrobial therapy.

Control via chemotherapies

  • Drug resistance related to R factors is a problem.
  • Strains may be resistant to all systemic antibiotics routinely tested.
  • Usually susceptible to gentamicin, tobramycin, amikacin and carbenicillin for treatment of soft tissue infections.
  • Tetracycline reaches bactericidal concentrations against P. aeruginosa in canine urine.
  • Most pseudomonads are susceptible to levels of antimicrobial agents in otic preparations, including neomycin, polymyxin, chloramphenicol, and gentamicin.

Diagnosis

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Nuttall T J (1998) Use of ticarcillin in the management of canine otitis externa complicated by Pseudomonas aeruginosa. JSAP 39 (4), 165-168 PubMed.
  • Court E A, Watson A D & Martin P (1994) Pseudomonas aeruginosa bacteraemia in a dog. Aust Vet J 71 (1), 25-27 PubMed.
  • Ling G V, Creighton S R & Ruby A L (1981) Tetracycline for oral treatment of canine urinary tract infection caused by Pseudomonas aeruginosa. JAVMA 179 (6), 578-579 PubMed.

Can’t find what you’re looking for?

We have an ever growing content library on Vetlexicon so if you ever find we haven't covered something that you need please fill in the form below and let us know!

 
 
 
 

To show you are not a Bot please can you enter the number showing adjacent to this field

 Security code