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EVG, molekularna diagnostika
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Slovenia



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Description

Narcolepsy is a disabling sleep disorder affecting different dog breads. It is characterized by daytime sleepiness, cataplexy, and striking transitions from wakefulness into rapid eye movement (REM) sleep. Dogs with narcolepsy exhibit cataplexy, sudden episodes of muscle weakness akin to REM sleep–associated atonia that are triggered primarily by positive emotions. Animals in narcoleptic state are almost without muscular tonus. The first signs of disease may be apparent as early as 4 weeks to 6 month of age. The frequency of episodes is specific for each animal, however the frequency of episodes in general is declining with age. Disease is inherited as autosomal recessive trait where mutations in OX2R gene have been shown to segregate perfectly with diseased individuals.

 

Inheritance: autosomal recessiveread more

Mutation: OX2R (HCRTR2) gene 

Genetic test: Disease or carrier can be identified by genetic testing at any age. The PCR method used for testing is extremely accurate and allows complete differentiation between affected animals, carriers and healthy dogs.

Disease control: read more

Affected breeds: Labrador Retriever, Doberman (not available)

Sample: EDTA whole blood (1.0 ml) or buccal swabs. Detailed information about sampling can be found here.

 

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