Titre : Virus maedi-visna

Virus maedi-visna : Questions médicales fréquentes

Termes MeSH sélectionnés :

Chimerism
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"description": "Comment diagnostiquer une infection par le virus maedi-visna ?\nQuels tests sont utilisés pour le virus maedi-visna ?\nLes symptômes aident-ils au diagnostic ?\nPeut-on diagnostiquer le virus chez les animaux asymptomatiques ?\nQuelle est l'importance du diagnostic précoce ?", "url": "https://questionsmedicales.fr/mesh/D014790?mesh_terms=Chimerism&page=4#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Virus maedi-visna", "description": "Quels sont les symptômes principaux du virus maedi-visna ?\nLes symptômes varient-ils selon l'âge des moutons ?\nY a-t-il des symptômes neurologiques associés ?\nLes symptômes sont-ils toujours présents ?\nComment évoluent les symptômes au fil du temps ?", "url": "https://questionsmedicales.fr/mesh/D014790?mesh_terms=Chimerism&page=4#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Virus maedi-visna", "description": "Comment prévenir 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sont-elles fréquentes ?\nComment les complications affectent-elles la production ?\nLes complications sont-elles réversibles ?\nQuel est le pronostic pour les animaux infectés ?", "url": "https://questionsmedicales.fr/mesh/D014790?mesh_terms=Chimerism&page=4#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Virus maedi-visna", "description": "Quels sont les facteurs de risque d'infection ?\nLe stress augmente-t-il le risque d'infection ?\nLes races de moutons sont-elles affectées différemment ?\nL'environnement joue-t-il un rôle dans l'infection ?\nLes pratiques d'élevage influencent-elles le risque ?", "url": "https://questionsmedicales.fr/mesh/D014790?mesh_terms=Chimerism&page=4#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment diagnostiquer une infection par le virus maedi-visna ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Le diagnostic repose sur des tests sérologiques et des analyses PCR pour détecter le virus." } }, { "@type": "Question", "name": "Quels tests sont utilisés pour le virus maedi-visna ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Les tests ELISA et PCR sont couramment utilisés pour identifier le virus dans le sang." } }, { "@type": "Question", "name": "Les symptômes aident-ils au diagnostic ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les symptômes cliniques comme la pneumonie et l'encéphalite orientent le diagnostic." } }, { "@type": "Question", "name": "Peut-on diagnostiquer le virus chez les animaux asymptomatiques ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des tests sérologiques peuvent détecter le virus même sans symptômes visibles." } }, { "@type": "Question", "name": "Quelle est l'importance du diagnostic précoce ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Un diagnostic précoce permet de mieux gérer la maladie et de limiter sa propagation." } }, { "@type": "Question", "name": "Quels sont les symptômes principaux du virus maedi-visna ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes incluent toux, difficultés respiratoires et troubles neurologiques." } }, { "@type": "Question", "name": "Les symptômes varient-ils selon l'âge des moutons ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les jeunes animaux peuvent présenter des symptômes plus graves que les adultes." } }, { "@type": "Question", "name": "Y a-t-il des symptômes neurologiques associés ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des signes neurologiques comme des tremblements et des troubles de la coordination peuvent apparaître." } }, { "@type": "Question", "name": "Les symptômes sont-ils toujours présents ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Non, certains animaux peuvent être porteurs sans montrer de symptômes cliniques." } }, { "@type": "Question", "name": "Comment évoluent les symptômes au fil du temps ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes peuvent s'aggraver progressivement, menant à des complications graves." } }, { "@type": "Question", "name": "Comment prévenir l'infection par le virus maedi-visna ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "La prévention passe par l'isolement des animaux infectés et des pratiques d'élevage saines." } }, { "@type": "Question", "name": "Les tests de dépistage sont-ils efficaces ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le dépistage régulier des troupeaux permet de détecter et d'éliminer les animaux infectés." } }, { "@type": "Question", "name": "Quelles mesures d'hygiène sont recommandées ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Des mesures d'hygiène strictes, comme le nettoyage des équipements, sont essentielles." } }, { "@type": "Question", "name": "Les animaux doivent-ils être vaccinés ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Bien qu'il n'y ait pas de vaccin, la vaccination contre d'autres maladies est recommandée." } }, { "@type": "Question", "name": "Comment gérer les nouveaux animaux dans un troupeau ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Les nouveaux animaux doivent être testés et mis en quarantaine avant d'intégrer le troupeau." } }, { "@type": "Question", "name": "Quel est le traitement principal pour le virus maedi-visna ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Il n'existe pas de traitement spécifique; la gestion des symptômes est essentielle." } }, { "@type": "Question", "name": "Peut-on utiliser des antiviraux contre ce virus ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Actuellement, il n'y a pas d'antiviraux efficaces spécifiquement pour le virus maedi-visna." } }, { "@type": "Question", "name": "Comment gérer les animaux infectés ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Les animaux infectés doivent être isolés et traités symptomatiquement pour améliorer leur confort." } }, { "@type": "Question", "name": "Y a-t-il des vaccins disponibles ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Il n'existe pas de vaccin commercialement disponible contre le virus maedi-visna." } }, { "@type": "Question", "name": "Quel rôle joue la nutrition dans le traitement ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Une bonne nutrition peut aider à renforcer le système immunitaire des animaux infectés." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec le virus maedi-visna ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Les complications incluent pneumonie chronique et encéphalite, pouvant être mortelles." } }, { "@type": "Question", "name": "Les complications sont-elles fréquentes ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les complications sont courantes chez les animaux infectés, surtout sans traitement." } }, { "@type": "Question", "name": "Comment les complications affectent-elles la production ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Les complications peuvent réduire la productivité des animaux, affectant la rentabilité de l'élevage." } }, { "@type": "Question", "name": "Les complications sont-elles réversibles ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Certaines complications peuvent être gérées, mais beaucoup sont irréversibles et graves." } }, { "@type": "Question", "name": "Quel est le pronostic pour les animaux infectés ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Le pronostic dépend de la gravité des symptômes; beaucoup développent des complications graves." } }, { "@type": "Question", "name": "Quels sont les facteurs de risque d'infection ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Les facteurs incluent l'âge, le stress, et la densité de population dans le troupeau." } }, { "@type": "Question", "name": "Le stress augmente-t-il le risque d'infection ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, le stress peut affaiblir le système immunitaire, augmentant le risque d'infection." } }, { "@type": "Question", "name": "Les races de moutons sont-elles affectées différemment ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Certaines races peuvent être plus susceptibles à l'infection en raison de leur génétique." } }, { "@type": "Question", "name": "L'environnement joue-t-il un rôle dans l'infection ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, un environnement surpeuplé et insalubre favorise la propagation du virus." } }, { "@type": "Question", "name": "Les pratiques d'élevage influencent-elles le risque ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des pratiques d'élevage inadéquates augmentent le risque de transmission du virus." } } ] } ] }

Sources (1443 au total)

One fits all: a highly sensitive combined ddPCR/pyrosequencing system for the quantification of microchimerism after hematopoietic and solid organ transplantation.

A combined digital droplet PCR (ddPCR)/pyrosequencing assay system was developed that demonstrated advantages applicable to multiple qualitative and quantitative molecular genetic diagnostic applicati... ddPCR and pyrosequencing assays targeting 32 SNPs/markers were established. ddPCR results from 72 gDNAs of 55 patients after allogeneic HSCT and 107 plasma-cfDNAs of 25 liver transplant recipients wer... The ddPCR results were in good agreement with the established marker. The limit of detection was 0.02 % minor allele fraction. The relationship between ddPCR and STR-PCR was linear with R... Combining pyrosequencing for genotyping and ddPCR for minor allele quantification enhances sensitivity and precision for the patient after HSCT and SOT. The assay is designed for maximum flexibility. ...

Increased fetal microchimerism in immune and stem cell subsets in preeclampsia.

Preeclampsia (PE) is associated with an increased risk of maternal cardiovascular disease (CVD), however, it is unclear whether this is due to shared underlying physiology or changes which occur durin... We investigated whether PE is associated with alterations in FMc immune and stem cell populations. We analyzed maternal peripheral blood mononuclear cells (PBMC) from PE cases (n = 16) and matched con... There was a significant increase in FMc concentration in immune cell subsets in PE cases compared to controls, predominantly in B cell, and NK cell lymphocyte populations. There was no significant dif... The altered concentrations of immune cells within FMc in the maternal blood provides a potential mechanism for the inflammation which occurs during PE to induce long-lasting changes to the maternal im...

The development of an indel panel for microchimerism detection.

The aim of the study was to create a simple assay for microchimerism detection independent of sex and without HLA genotyping.... The method is based on detection of insertion or deletions utilizing a multiplex PCR followed by fragment analysis by capillary electrophoresis, and probe-based qPCR assays. A total of 192 samples, ta... The overall prevalence of DYS14 positive samples was 29% (55/192) whereas 32% (61/192) tested positive by the indel method. There was an overall agreement of 64% (122/192) between the results obtained... The data indicates that microchimerism can be detected efficiently by the indel method. This makes it possible to detect both female and male cells without the need of HLA-genotyping. Furthermore, the...

Molecular biology analysis of ABO blood group variants caused by natural chimaerism.

The chimaerism phenomenon constitutes a significant mechanism underlying ABO phenotype discrepancies; however, its detection has technical challenges. In the current study, we explored different techn... Fifteen individuals with possible chimaeric ABO blood type, as suggested by standard tube or column agglutination method and RBC adsorption-elution test, were enrolled in the study. The red blood cell... The genetic chimaeric status was confirmed in four (27%) individuals by SSP test alone. The ABO gene sequencing identified an additional ABO allele and enabled chimaerism detection in 10 (67%) subject... The ABO blood type chimaerism can be genetically established by comprehensive molecular methods, including PCR-SSP/DNA sequencing, STR and ddPCR, which is particularly sensitive for the detection of m...