Nocardioform placentitis with isolation of Amycolatopsis spp in a Florida-bred mare

Journal of the American Veterinary Medical Association
Bruce W ChristensenJ M Donahue

Abstract

A 4-year-old Thoroughbred mare was evaluated because of placental abnormalities and a retained placental remnant. Microbial culture of the placenta yielded pure growth of Amycolatopsis spp. Histologic examination of the placenta revealed a focally expanding chorionitis with intralesional gram-positive filamentous bacilli and multifocal allantoic adenomatous hyperplasia on the apposing allantoic surface. Treatment with lavage and oxytocin resulted in expulsion of the placental remnant within hours of parturition. The mare did not become pregnant again despite multiple breedings. The foal appeared healthy but died of complications during an elective surgical procedure at 7 weeks of age. To the author's knowledge, all previously confirmed cases of nocardioform placentitis have been in mares bred in the central Kentucky region. Indications that the pathogen in the mare reported here is a different species than that isolated in Kentucky suggest that this is an emerging disease. Mares with nocardioform placentitis usually do not have the same clinical signs as mares with placentitis resulting from an ascending pathogen.

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Citations

May 9, 2006·Journal of the American Veterinary Medical Association·Bruce W ChristensenUNKNOWN American College of Theriogenologists
Mar 14, 2012·Veterinary Microbiology·Erdal ErolCraig N Carter
Mar 26, 2013·Australian Veterinary Journal·K H TodhunterA P Begg
Jul 16, 2010·Reproduction in Domestic Animals = Zuchthygiene·M M LeBlanc
Mar 13, 2014·Equine Veterinary Journal·I F CanissoM H T Troedsson
May 16, 2012·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Aime K JohnsonJ Michael Donahue

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