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Emerging Infectious Diseases
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Prion Disease in Dromedary Camels, Algeria

مرض بريون في الإبل الجملية، الجزائر
Authors: Baaissa Babelhadj; Michele Angelo Di Bari; Laura Pirisinu; Barbara Chiappini; Semir Bechir Suheil Gaouar; Geraldina Riccardi; Stefano Marcon; +3 Authors

Prion Disease in Dromedary Camels, Algeria

Abstract

Los priones causan enfermedades neurodegenerativas fatales y transmisibles, incluida la enfermedad de Creutzfeldt-Jakob en humanos, la tembladera en pequeños rumiantes y la encefalopatía espongiforme bovina (EEB). Después de que la epidemia de EEB y las infecciones humanas asociadas comenzaran en 1996 en el Reino Unido, se han planteado preocupaciones generales sobre los priones animales. Detectamos una enfermedad priónica en camellos dromedarios (Camelus dromedarius) en Argelia. Los síntomas que sugieren la enfermedad priónica ocurrieron en el 3,1% de los dromedarios llevados al matadero de Ouargla en 2015-2016. Confirmamos el diagnóstico mediante la detección de neurodegeneración patognomónica y proteína priónica específica de la enfermedad (PrPSc) en tejidos cerebrales de 3 animales sintomáticos. La detección de priones en los tejidos linfoides sugiere la naturaleza infecciosa de la enfermedad. La caracterización bioquímica de PrPSc mostró diferencias con la EEB y la tembladera. Nuestra identificación de esta enfermedad priónica en una especie ganadera geográficamente extendida requiere una aplicación urgente de la vigilancia y la evaluación de los riesgos potenciales para la salud humana y animal.

Les prions provoquent des maladies neurodégénératives mortelles et transmissibles, notamment la maladie de Creutzfeldt-Jakob chez l'homme, la tremblante chez les petits ruminants et l'encéphalopathie spongiforme bovine (ESB). Après le début de l'épidémie d'ESB et des infections humaines associées en 1996 au Royaume-Uni, des préoccupations générales ont été soulevées au sujet des prions animaux. Nous avons détecté une maladie à prions chez le dromadaire (Camelus dromedarius) en Algérie. Des symptômes suggérant une maladie à prions sont survenus chez 3,1 % des dromadaires amenés à l'abattoir de Ouargla en 2015-2016. Nous avons confirmé le diagnostic en détectant la neurodégénérescence pathognomonique et la protéine prion spécifique à la maladie (PrPSc) dans les tissus cérébraux de 3 animaux symptomatiques. La détection des prions dans les tissus lymphoïdes suggère la nature infectieuse de la maladie. La caractérisation biochimique PrPSc a montré des différences avec l'ESB et la tremblante. Notre identification de cette maladie à prions chez une espèce animale géographiquement répandue nécessite une surveillance et une évaluation urgentes des risques potentiels pour la santé humaine et animale.

Prions cause fatal and transmissible neurodegenerative diseases, including Creutzfeldt-Jakob disease in humans, scrapie in small ruminants, and bovine spongiform encephalopathy (BSE). After the BSE epidemic, and the associated human infections, began in 1996 in the United Kingdom, general concerns have been raised about animal prions. We detected a prion disease in dromedary camels (Camelus dromedarius) in Algeria. Symptoms suggesting prion disease occurred in 3.1% of dromedaries brought for slaughter to the Ouargla abattoir in 2015-2016. We confirmed diagnosis by detecting pathognomonic neurodegeneration and disease-specific prion protein (PrPSc) in brain tissues from 3 symptomatic animals. Prion detection in lymphoid tissues is suggestive of the infectious nature of the disease. PrPSc biochemical characterization showed differences with BSE and scrapie. Our identification of this prion disease in a geographically widespread livestock species requires urgent enforcement of surveillance and assessment of the potential risks to human and animal health.

تسبب البريونات أمراضًا تنكسية عصبية قاتلة ومنقولة، بما في ذلك مرض كروتزفيلد جاكوب لدى البشر، والخردة في المجترات الصغيرة، والاعتلال الدماغي الإسفنجي البقري (BSE). بعد وباء جنون البقر، والعدوى البشرية المرتبطة به، التي بدأت في عام 1996 في المملكة المتحدة، أثيرت مخاوف عامة بشأن البريونات الحيوانية. اكتشفنا مرض البريون في الإبل الجملية (Camelus dromedarius) في الجزائر. حدثت الأعراض التي تشير إلى مرض البريون في 3.1 ٪ من الجبليات التي تم إحضارها للذبح في مسلخ ورقلة في 2015-2016. أكدنا التشخيص عن طريق الكشف عن التنكس العصبي المسبب للمرض وبروتين البريون الخاص بالمرض (PrPSc) في أنسجة المخ من 3 حيوانات مصابة بأعراض. يشير اكتشاف البريون في الأنسجة اللمفاوية إلى الطبيعة المعدية للمرض. أظهر التوصيف الكيميائي الحيوي PrPSc اختلافات مع مرض جنون البقر والخردة. يتطلب تحديدنا لمرض البريون هذا في أنواع الماشية المنتشرة جغرافيًا إنفاذًا عاجلًا للمراقبة وتقييم المخاطر المحتملة على صحة الإنسان والحيوان.

Keywords

Biopsy, Veterinary medicine, Prion disease, Infectious and parasitic diseases, RC109-216, FOS: Health sciences, Creutzfeldt-Jakob Syndrome, Animal Diseases, Prion Diseases, Zoonoses, Pathology, Disease, prions, Transmissible spongiform encephalopathy, Nutrition and Dietetics, Kuru, Ecology, R, Life Sciences, dromedary camels, Immunohistochemistry, Encephalopathy, Bovine Spongiform, Cellular Prion Protein, Prion Diseases: Causes and Molecular Basis, Medicine, camel prion disease, Camelus dromedaries, Camelus, Livestock, Nursing, Prion Proteins, Copper and Zinc in Health and Disease, Biochemistry, Genetics and Molecular Biology, Virology, Health Sciences, Animals, Pathognomonic, Molecular Biology, Biology, Animal health, Research, Sequence Analysis, DNA, zoonoses, Bovine spongiform encephalopathy, Prion protein, Algeria, FOS: Biological sciences, Cattle, Scrapie

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
112
Top 1%
Top 10%
Top 1%
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