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Horse Times Magazine :: Summer Issue # 54

PUBLISHED SUMMER 2017, ISSUE 54 FEATURES:

THE ROLEX GRAND PRIX AT CHIO AACHEN
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LEXINGTON, KENTUCKY

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“THE MOSTEST HOSS THERE EVER WAS..

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FEI SECRETARY GENERAL ELECTED PRESIDENT OF NEW PARALYMPIC ASSOCIATION

EDWINA TOPS-ALEXANDER BACK ON TRACK

USA ON TOP WITH KENT FARRINGTON TOPPING THE WORLD RANKING FOR A FIFTH CONSECUTIVE MONTH

FEI PRESIDENT INGMAR DE VOS ELECTED AS IOC MEMBER

SWEDISH CAPITAL JOINS WORLD’S PREMIER SHOWJ..

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>> LEPTOSPIRA AND UVEITIS
Date: Thursday, May 18, 2017
Horse Times Egypt: Equestrian Magazine :News :LEPTOSPIRA AND UVEITIS

Equine Veterinary Journal Early View April 2017

By Heather Ferguson

 

The role of Leptospira spp. in horses affected with recurrent uveitis in the UK

 

Malalana, R. J. Blundell, G. L. Pinchbeck and C. M. McGowan

 

 

This study aimed to provide information on the role of Leptospira infection in equine recurrent uveitis (ERU) cases in the UK. A total of 30 eyes enucleated from ERU cases and 45 eyes from control cases were examined histologically for uveitis. Blood and aqueous humour from all eyes were also tested for Leptospira antibody levels using a microagglutination test.

 

All eyes from the ERU group showed evidence of uveitis, such as lymphocytic inflammation of choroid and ciliary body, uveal haemorrhage and retinal detachment. There was no evidence of disease in the control group.

 

Just over half of horses (65% ERU cases and 41% controls) were serologically positive for Leptospira, the most commonly detected serovars being bratislava, autumnalis, copenhageni and australis. There was no significant difference in serum antibody titres between the groups.  Six eyes (8%) had detectable Leptospira antibodies in the aqueous humour, all ERU cases, meaning that a positive antibody titre in aqueous humour was significantly associated with ERU. When these cases were compared with ERU cases without positive antibody titres in aqueous humour, there was no significant difference in serum antibody titres, suggesting serum antibody levels may not be helpful in differentiating Leptospira-associated ERU from other initiating causes.

 

 

Bottom line:

 

The prevalence of Leptospira infection in ERU cases in the UK is low. Serum antibody levels do not help differentiate Leptospira-associated cases and testing of aqueous humour is required to confirm involvement of Leptospira in ERU cases.

 

Photo: Practical Horseman Mag

 

 

--Ends--

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