title: [The occurrence and significance of plasma coagulase negative staphylococci from the genital tract of horses].
abstract: Classification based on biochemical characteristics of 389 strains of plasma-coagulase-negative (plc-) staphylococci isolated from the genital tract of mares and stallions resulted in the following distribution of species: St. sciuri 130 (33.4%), St. equorum 42 (10.8%), St. xylosus 16 (4.1%), St. epidermidis 35 (9.0%), St. simulans 24 (6.2%), St. haemolyticus 33 (8.5%), St. warneri 18 (4.6%), St. lentus 12 (3.1%), St. hyicus 11 (2.8%). Strains of St. cohnii, St. capitis, St. gallinarum, St. saprophyticus and St. hominis have only been found sporadically (a. 1%). 48 (12.3%) strains could not be classified. With regard to species distribution of isolates from stallions and mares. 63.7% of the isolates from stallions belonged to St. sciuri and 9.3% to St. lentus, whereas in isolates of mares these species numbered only 24.9% and 0.4%, respectively. On the other hand the species St. equorum (14.9% vs. 6.8%), St. epidermidis (14.5% vs. 1.7%), St. haemolyticus (14.0% vs. 1.7%), St. warneri (7.7% vs. 0.8%) and St. xylosus (5.9% vs. 2.5%) predominated in mares. St. simulans was found occurring equally in mares and stallions (7.7% vs. 5.9%). Comparing the staphylococcal species of healthy mares and of mares which have not become pregnant after copulation no indication was found for a significant role of certain plc- staphylococci in infertility. All of the 389 isolates were tested for production of protein A, i.e. Fc-fragment binding receptors, using a microenzyme-assay with peroxidase-labelled rabbit immunoglobulin G. With this method cell-bound or extracellular Fc-receptors could not be detected in anyone of the plc- staphylococcal strains.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.forename: H
authors.initials: H
authors.lastname: Hüthwohl
authors.forename: R
authors.initials: R
authors.lastname: Weiss
authors.forename: N
authors.initials: N
authors.lastname: Schmeer
authors.forename: T
authors.initials: T
authors.lastname: Schliesser
mesh_terms: D000818:Animals; D002353:Carrier State / Q000382:microbiology / Q000662:veterinary*; D005260:Female; D005835:Genitalia / Q000382:microbiology*; D006734:Horse Diseases / Q000382:microbiology*; D006736:Horses; D008297:Male; D013203:Staphylococcal Infections / Q000382:microbiology / Q000662:veterinary*; D013210:Staphylococcus / Q000302:isolation & purification*
vernacular_title: Zu Vorkommen und Bedeutung plasmakoagulasenegativer Staphylokokken aus dem Genitaltrakt von Pferden.