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Virus
Virus à ARN
Retroviridae
Lentivirus
Lentivirus ovins-caprins
Virus maedi-visna
Virus maedi-visna : Questions médicales fréquentes
Termes MeSH sélectionnés :
Complement Membrane Attack Complex
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"@type": "Question",
"name": "Comment diagnostiquer une infection par le virus maedi-visna ?",
"position": 1,
"acceptedAnswer": {
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"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."
}
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{
"@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."
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},
{
"@type": "Question",
"name": "Quelle est l'importance du diagnostic précoce ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
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{
"@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."
}
}
]
}
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We sought to determine if soluble levels of C5b-9, the terminal complement complex, correlate with end-organ injury in preeclampsia....
Project COPA (Complement and Preeclampsia in the Americas), a multi-center observational study in Colombia from 2015 to 2016, enrolled hypertensive pregnant women into four groups: chronic hypertensio...
C5b-9 concentrations in plasma and urine, using enzyme linked immunosorbent assays....
In total, 298 hypertensive participants were enrolled. Plasma and urine C5b-9 levels were measured in all participants and stratified by quartile (Q1-4), from lowest to highest C5b-9 concentration. Pa...
We identified a pattern of increased urine and low plasma C5b-9 levels in patients with preeclampsia and end-organ injury. Soluble C5b-9 levels may be used to identify complement-mediated end-organ in...
Polymorphisms in complement genes are risk-associated for age-related macular degeneration (AMD). Functional analysis revealed a common deficiency to control the alternative complement pathway by risk...
Collection of plasma from patients with wet AMD (n = 87: 62% female and 38% male; median age 77 years) and controls (n = 86: 39% female and 61% male; median age 58 years), grouped for risk factor smok...
Genotyping, measurement of TCC concentrations, ARPE-19 cell culture, Ca...
TCC concentration in plasma, intracellular free Ca...
TCC levels in the plasma of AMD patients were five times higher than in non-AMD controls but did not differ in plasma from carriers of the two risk alleles. Complement-evoked Ca...
TCC levels were higher in AMD patients but did not depend on genetic risk factors. The Ca...
Non-typhoidal Salmonella (NTS) infections pose a serious public health problem. In addition to the typical course of salmonellosis, an infection with Salmonella bacteria can often lead to parenteral i...
The complement system is an essential component of our innate defense and plays a vital role in the pathogenesis of many diseases. Assessment of complement activation is critical in monitoring both di...
We performed a systematic analysis of the current methods used to assess complement components and reviewed whether the identified studies performed their complement measurements according to the reco...
A literature search using the Pubmed/MEDLINE database was performed focusing on studies measuring the key complement components C3, C5 and/or their split products and/or the soluble variant of the ter...
A total of 92 out of 376 studies were selected for full-text analysis. Forty-five studies (49%) were identified as using the correct sample type and techniques for their complement analyses, while 25 ...
A substantial part of the reviewed studies did not use the appropriate sample type for assessing complement activation or did not mention which sample type was used. This deviation from the standardiz...
We explored the pathological changes and the activation of local complement system in COVID-19 pneumonia. Lung paraffin sections of COVID-19 infected patients were analyzed by HE (hematoxylin-eosin) s...
Myasthenia gravis is a neuromuscular disease associated with antibodies against components of the neuromuscular junction, most often against the acetylcholine receptor (AChR). Although several mechani...
Bacterial and mitochondrial DNA, sharing an evolutionary origin, act as danger-associated molecular patterns in infectious and sterile inflammation. They both contain immunomodulatory CpG motifs. Inte...
Atypical hemolytic uremic syndrome (aHUS) is a rare kidney disease caused by dysregulation of the complement alternative pathway. The complement dysregulation specifically leads to damage to the glome...
Endothelial cells were incubated with human test sera and stained with an anti-C5b-9 antibody to visualize and quantify complement depositions on the cells with immunofluorescence microscopy....
First, we showed that zymosan-activated sera resulted in increased endothelial C5b-9 depositions compared to normal human serum (NHS). The levels of C5b-9 depositions were similar between conditionall...
In conclusion, we demonstrate a robust and reliable model to adequately measure C5b-9-based complement deposition on human control and patient ciGMVECs. This model can be used to study the pathophysio...
Complement is involved in the pathogenesis of neuroimmune disease, but the detailed pathological roles of the complement pathway remain incompletely understood. Recently, eculizumab, a humanized anti-...
Myasthenia gravis (MG) is an autoimmune disease affecting the neuromuscular junction (NMJ) of skeletal muscle. Complement activation is one of the mechanisms by which anti-acetylcholine receptor (anti...
In this single-center, observational study of 45 patients with anti-AChR-antibody-positive generalized MG, serum concentrations of major components of the complement pathways, including C1q, C5, C5a, ...
The patients with MG exhibited lower serum levels of C5 (p = .0001) and higher serum levels of sC5b-9 (p = .004) compared with the control group. At about 6 months (range, 172-209 days) after the star...
Herein, we provide evidence for the activation of the classical complement pathway and its association with disease activity in anti-AChR-antibody-positive generalized MG....