Reference : A case of true hermaphrodism in a horse
Scientific congresses and symposiums : Paper published in a journal
Life sciences : Veterinary medicine & animal health
http://hdl.handle.net/2268/173342
A case of true hermaphrodism in a horse
English
Parrilla-Hernadez, Sonia [Centre Européen du Cheval: LINALUX - Mont-le-Soie > Reproduction > > >]
de la Rebière de Pouyade, Geoffroy mailto [Université de Liège - ULiège > Dép. clinique des animaux de compagnie et des équidés (DCA) > Anesthésiologie gén. et pathologie chirurg. des grds animaux >]
Grulke, Sigrid mailto [Université de Liège - ULiège > Dép. clinique des animaux de compagnie et des équidés (DCA) > Dép. clinique des animaux de compagnie et des équidés (DCA) >]
Ponthier, Jérôme mailto [Université de Liège - ULiège > Dép. clinique des animaux de compagnie et des équidés (DCA) > Anesthésiologie gén. et pathologie chirurg. des grds animaux >]
Deleuze, Stefan mailto [Université de Liège - ULiège > Dép. clinique des animaux de compagnie et des équidés (DCA) > Obstét. et path. de la reprod. des anim. de comp. et équidés >]
Sep-2014
Reproduction in Domestic Animals
Blackwell Publishing
49
suppl 3
50
Yes (verified by ORBi)
No
International
0936-6768
1439-0531
Berlin
Germany
Congress of the European Society of Domestic Animal Reproduction (ESDAR)
11-13 septembre 2014
European Society of Domestic Animal Reproduction (ESDAR)
Helsinki
Finland
[en] Horse ; Mare ; Reproduction ; Hermaphrodism ; Congenital abnormalities ; ovotestis
[en] True hermaphroditism in horses, is a complex and poorly under- stood disorder of sexual development characterized by the presence of both male and female gonads as separate organs or in a combined structure called ovotestis. A 3-year-old Spanish nullipa- rous mare with a history of stallion behaviour and an abnormal reproductive exam was presented at the Equine Clinic of the University of Li ege. Externally, a small vulva with an enlarged clitoris was observed. Transrectal ultrasonography showed a thin (<1 cm) uterus, leading to a small heterogeneous structure in the normal place of the left ovary. No structure could be identified in the presumed location of the right ovary. Speculum exam was compatible with a vaginal agenesis, as the cervix opened craniad the urethral meatus. Oestradiol, progesterone and testosterone concen- trations were compatible with a stallion’s endocrinology. Gonads were laparoscopically found in the usual location of the ovaries in both flanks and excised. Histopathology of both gonads showed atrophic testicular tissue with hyperplastic Leydig cells. The left gonad also contained ovarian tissue with some scarce primordial follicles. Clitoral enlargement is the first symptom most commonly identified in animals with true hermaphroditism and can be explained by the production of testosterone by the gonads, however, the aetiology of the vaginal agenesis is unknown. True hermaph- roditism in horses is generally related to 64XX syndrome with or without SRY gene translocation (impending karyotyping analysis). After 5 days the mare was discharged from the clinic, and in absence of testosterone the stallion behaviour disappeared in a couple of months.
University de Liège - Veterinary Medicine Faculty - Equine Clinic ; Centre Européen du Cheval: LINALUX - Mont-le-Soie
University de Liège - Veterinary Medicine Faculty - Equine Clinic ; Centre Européen du Cheval: LINALUX - Mont-le-Soie
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/173342

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