Types of Pseudomonas aeruginosa isolated from horses

Abstract

Summary Pseudomonas aeruginosa isolates from equine clinical material were categorised according to their serotype and phage type. Epidemiological evidence showed that serotypes 02a, 03,04,06, 09 and 010 were the cause of genital and non‐genital infections; somatic type 03 accounted for 50 per cent of isolates. The laboratory tests used were of no value in predicting whether or not a particular isolate was likely to be a venereal pathogen, but all the serotypes encountered had the potential to be pathogenic, given a favourable environment in which to multiply. Résumé Des souches de Pseudomonas aeruginosa isolées de prélèvements cliniques équins ont été classées suivant leur sérotype et suivant leur type phage. L'étude épidémiologique a montré que les sérotypes 02a, 03, 04, 06, 09 et 010 étaient la cause d'infections génitales et extra génitales. Le type somatique 03 représentait 50% des souches isolées. Les épreuves de laboratoire utilisées parurent n'avoir aucune valeur pour la prévision de l'aptitude pathogène vénérienne des souches. Tous les sérotypes rencontrés parurent être des pathogènes potentiels, en function d'un environnement favorable à leur multiplication. Zussammenfassung Pseudomonas aeruginosa Isolate aus klinischem Material von Pferden wurden nach Serotyp und Phagentyp eingeteilt. Die epidemiologischen Gegebenheiten zeigten, dass die Serotypen 02a, 03, 04, 06, 09 und 010 die Ursache genitaler und nicht‐genitaler Infektionen sind; der somatische Typ 03 wurde in 50 Prozent der Isolate nachgewiesen. Die verwendeten Labortests erwiesen sich als nutzlos für die Beantwortung der Frage, ob ein bestimmtes Isolat als Erreger einer Genitalinfektion in Frage komme. Alle nachgewiesenen Serotypen erwiesen sich aber als potentiell pathogen, wenn sie ein für ihre Vermehrung günstiges Milieu antrafen.

Incidence of bacterial pathogens in equine uterine swabs, their antibiotic resistance patterns, and selected reproductive indices in English thoroughbred mares during the foal heat cycle

“…Also the variability in incidence of haemolytic Escherichia coli strains (unambiguously associated with reproductive disorders in females) in comparison with non-haemolytic strains, reported in studies by Barrelet (1995), Albihn et al (2003), Frontoso et al (2008) as well as in our study indicate that both types of E. coli strains are important pathogens or potential pathogens populating the reproductive apparatus of mares after parturition. In agreement with other studies (Brown et al 1979;Atherton and Pitt 1982;Frontoso et al 2008) our results showed that Klebsiella spp. and Pseudomonas spp.…”

Molecular epidemiology of clinical isolates of Pseudomonas aeruginosa isolated from horses in Ireland

“…With such an amount of development of methods to aid in the characterisation of P. aeruginosa , it is surprising that similar reports, applying these highly discriminatory molecular methods to collections of P. aeruginosain horses, are absent from the literature. The description of previous typing studies on equine P. aeruginosa is limited to the relatively old report by Atherton and Pitt [ 1 ] from 1982, who employed phenotypic serotyping and phage-typing. This study demonstrated that somatic type O3 accounted for 5% of isolates and that all serotypes had the potential to be pathogenic, given favourable culture conditions.…”

Prevalence of antimicrobial resistance from bacterial culture and susceptibility records from horse samples in South Africa

“…Pseudomonas aeruginosa is ubiquitous in the environment and commonly causes genital tract infections, pneumonia and ulcerative keratitis in horses (Atherton and Pitt 1982;Blanchard et al 1992). From the aggregated data 31.7% and 23.2% of the Pseudomonas isolates were cultured from respiratory system and uterine/endometrial samples respectively.…”