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Investigation of Known Genetic Mutations of Arabian Horses in Egyptian Arabian Foals with Juvenile Idiopathic Epilepsy.

  • Author(s): Aleman, M
  • Finno, CJ
  • Weich, K
  • Penedo, MCT
  • et al.
Abstract

BACKGROUNDThe carrier status of lavender foal syndrome (LFS), cerebellar abiotrophy (CA), severe combined immunodeficiency (SCID), and occipitoatlantoaxial malformation (OAAM1) in foals with juvenile idiopathic epilepsy (JIE) is unknown.HYPOTHESIS/OBJECTIVESTo determine the carrier status of LFS, CA, SCID, and OAAM1 in foals with JIE.ANIMALSTen foals with JIE.MATERIALS AND METHODSArchived DNA samples were tested for known genetic mutations causing LFS, CA, SCID, and OAAM1. The inclusion criteria consisted of having been diagnosed with JIE by ruling out other causes of seizures in foals and supported by electroencephalographic examination.RESULTSTen Egyptian Arabian horses (5 females and 5 males) were phenotyped as foals with JIE by electroencephalography (EEG). All foals were negative for the genetic mutations that cause LFS, CA, SCID, and OAAM1 except for 1 foal that was a carrier of CA.CONCLUSIONS AND CLINICAL IMPORTANCEJuvenile idiopathic epilepsy of Egyptian Arabian foals and LFS appear to be phenotypically and genetically distinct disorders. There was no apparent association between JIE and LFS, CA, SCID, and OAAM1.

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