questionsmedicales.fr
Structures virales
Virion
Virion : Questions médicales fréquentes
Termes MeSH sélectionnés :
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"name": "Diagnostic",
"headline": "Diagnostic sur Virion",
"description": "Comment identifier un virion dans un échantillon ?\nQuels tests sont utilisés pour détecter les virions ?\nLes virions peuvent-ils être visualisés au microscope ?\nQuelle est la méthode de culture des virions ?\nLes tests sérologiques détectent-ils les virions ?",
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"description": "Comment prévenir les infections virales ?\nLes masques protègent-ils contre les virions ?\nLes vaccins sont-ils efficaces contre tous les virions ?\nL'hygiène personnelle aide-t-elle à prévenir les infections ?\nLes voyages augmentent-ils le risque d'infection virale ?",
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"headline": "Traitements sur Virion",
"description": "Quels traitements sont efficaces contre les virions ?\nLes antibiotiques sont-ils efficaces contre les virions ?\nComment les vaccins agissent-ils contre les virions ?\nLes traitements symptomatiques sont-ils utiles ?\nLes traitements antiviraux sont-ils toujours efficaces ?",
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"headline": "Complications sur Virion",
"description": "Quelles complications peuvent survenir après une infection virale ?\nLes virions peuvent-ils causer des maladies chroniques ?\nComment les complications sont-elles gérées ?\nLes complications varient-elles selon le virion ?\nLes enfants sont-ils plus à risque de complications ?",
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"name": "Facteurs de risque",
"headline": "Facteurs de risque sur Virion",
"description": "Quels sont les facteurs de risque d'infection virale ?\nLe stress affecte-t-il le risque d'infection virale ?\nLes maladies chroniques augmentent-elles le risque d'infection ?\nL'environnement joue-t-il un rôle dans le risque viral ?\nLes habitudes alimentaires influencent-elles le risque viral ?",
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"@type": "Question",
"name": "Comment identifier un virion dans un échantillon ?",
"position": 1,
"acceptedAnswer": {
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"text": "L'identification se fait par microscopie électronique ou tests PCR."
}
},
{
"@type": "Question",
"name": "Quels tests sont utilisés pour détecter les virions ?",
"position": 2,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les tests PCR, les cultures virales et les tests sérologiques sont courants."
}
},
{
"@type": "Question",
"name": "Les virions peuvent-ils être visualisés au microscope ?",
"position": 3,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les virions peuvent être visualisés au microscope électronique."
}
},
{
"@type": "Question",
"name": "Quelle est la méthode de culture des virions ?",
"position": 4,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les virions sont cultivés dans des cellules hôtes appropriées en laboratoire."
}
},
{
"@type": "Question",
"name": "Les tests sérologiques détectent-ils les virions ?",
"position": 5,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, ils détectent les anticorps contre les virions, pas les virions eux-mêmes."
}
},
{
"@type": "Question",
"name": "Quels symptômes indiquent une infection virale ?",
"position": 6,
"acceptedAnswer": {
"@type": "Answer",
"text": "Fièvre, fatigue, douleurs musculaires et symptômes respiratoires sont fréquents."
}
},
{
"@type": "Question",
"name": "Les virions causent-ils toujours des symptômes ?",
"position": 7,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, certains virions peuvent être asymptomatiques chez l'hôte."
}
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{
"@type": "Question",
"name": "Comment les symptômes varient-ils selon le virion ?",
"position": 8,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les symptômes dépendent du type de virus et de l'hôte infecté."
}
},
{
"@type": "Question",
"name": "Les symptômes d'une infection virale sont-ils immédiats ?",
"position": 9,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, il peut y avoir une période d'incubation avant l'apparition des symptômes."
}
},
{
"@type": "Question",
"name": "Les virions peuvent-ils provoquer des symptômes neurologiques ?",
"position": 10,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certains virions, comme ceux de la grippe, peuvent affecter le système nerveux."
}
},
{
"@type": "Question",
"name": "Comment prévenir les infections virales ?",
"position": 11,
"acceptedAnswer": {
"@type": "Answer",
"text": "Se laver les mains, éviter les contacts étroits et se faire vacciner sont essentiels."
}
},
{
"@type": "Question",
"name": "Les masques protègent-ils contre les virions ?",
"position": 12,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les masques réduisent la transmission des virions par voie respiratoire."
}
},
{
"@type": "Question",
"name": "Les vaccins sont-ils efficaces contre tous les virions ?",
"position": 13,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, chaque vaccin cible des virions spécifiques et ne protège pas contre tous."
}
},
{
"@type": "Question",
"name": "L'hygiène personnelle aide-t-elle à prévenir les infections ?",
"position": 14,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, une bonne hygiène personnelle réduit le risque d'infections virales."
}
},
{
"@type": "Question",
"name": "Les voyages augmentent-ils le risque d'infection virale ?",
"position": 15,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les voyages peuvent exposer à de nouveaux virions et augmenter le risque d'infection."
}
},
{
"@type": "Question",
"name": "Quels traitements sont efficaces contre les virions ?",
"position": 16,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les antiviraux, comme l'oseltamivir, sont utilisés pour traiter certaines infections virales."
}
},
{
"@type": "Question",
"name": "Les antibiotiques sont-ils efficaces contre les virions ?",
"position": 17,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, les antibiotiques ne sont pas efficaces contre les infections virales."
}
},
{
"@type": "Question",
"name": "Comment les vaccins agissent-ils contre les virions ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les vaccins stimulent le système immunitaire à reconnaître et combattre les virions."
}
},
{
"@type": "Question",
"name": "Les traitements symptomatiques sont-ils utiles ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils aident à soulager les symptômes, mais ne traitent pas l'infection virale."
}
},
{
"@type": "Question",
"name": "Les traitements antiviraux sont-ils toujours efficaces ?",
"position": 20,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, leur efficacité dépend du type de virus et de la résistance virale."
}
},
{
"@type": "Question",
"name": "Quelles complications peuvent survenir après une infection virale ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Des complications comme la pneumonie, la déshydratation ou des infections secondaires peuvent survenir."
}
},
{
"@type": "Question",
"name": "Les virions peuvent-ils causer des maladies chroniques ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, certains virions, comme le VIH, peuvent entraîner des maladies chroniques."
}
},
{
"@type": "Question",
"name": "Comment les complications sont-elles gérées ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications sont gérées par des traitements symptomatiques et des soins médicaux appropriés."
}
},
{
"@type": "Question",
"name": "Les complications varient-elles selon le virion ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, chaque virion peut entraîner des complications différentes selon l'hôte."
}
},
{
"@type": "Question",
"name": "Les enfants sont-ils plus à risque de complications ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les enfants peuvent être plus vulnérables aux complications des infections virales."
}
},
{
"@type": "Question",
"name": "Quels sont les facteurs de risque d'infection virale ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les facteurs incluent l'âge, le système immunitaire affaibli et l'exposition à des porteurs."
}
},
{
"@type": "Question",
"name": "Le stress affecte-t-il le risque d'infection virale ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, le stress peut affaiblir le système immunitaire et augmenter le risque d'infection."
}
},
{
"@type": "Question",
"name": "Les maladies chroniques augmentent-elles le risque d'infection ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les maladies chroniques peuvent affaiblir l'immunité et augmenter le risque d'infection virale."
}
},
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"@type": "Question",
"name": "L'environnement joue-t-il un rôle dans le risque viral ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des environnements surpeuplés ou insalubres augmentent le risque d'infections virales."
}
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"@type": "Question",
"name": "Les habitudes alimentaires influencent-elles le risque viral ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, une alimentation déséquilibrée peut affaiblir le système immunitaire et augmenter le risque."
}
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Multiple system atrophy (MSA) is a fatal progressive neurodegenerative disease. Biomarkers are urgently required for MSA to improve the diagnostic and prognostic accuracy in clinic and facilitate the ...
To quantitatively assess oculomotor impairments in multiple system atrophy (MSA) and to explore their correlation with clinical characteristics....
We recruited 45 patients with MSA, including 21 with dominant ataxia (MSA-C), 24 with dominant parkinsonism (MSA-P), and 40 age-matched healthy controls. Detailed oculomotor performance in the horizon...
We found that the proportion of abnormal eye movements in patients with MSA was 93.3% (37.7%, 51.1%, 73.3%, 71.1%, and 37.8% on fixation and gaze-holding, without fixation, saccade, smooth pursuit, an...
An extremely high incidence of oculomotor impairments could be observed using VNG in both the MSA-C and MSA-P subtypes, although there were some differences between them....
A comprehensive oculomotor examination could serve as a valuable tool in the diagnostic workup of patients with MSA....
Cognitive impairment (CI), previously considered as a non-supporting feature of multiple system atrophy (MSA), according to the second consensus criteria, is not uncommon in this neurodegenerative dis...
Classically, cognitive impairment (CI) was not considered as a paramount feature of multiple system atrophy(MSA) in both parkinsonian(MSA-P) and cerebellar(MSA-C) motor-subtypes. Yet, growing evidence...
In a retrospective cross-sectional study, clinically-diagnosed MSA patients were included. All subjects underwent clinical and neuropsychological assessments to characterize their cognitive profile. T...
We included 71 MSA patients. Female gender(sex-ratio = 0.65) and MSA-P subtype(73%) were predominant. Mean age of disease onset was 59.1years. CI was found in 85.7% of patients(dementia in 12.7% and M...
In this study, the main determinants of CI in Tunisian MSA patients were MSA-P motor-subtype, mainly of PIGD-phenotype, disease duration and APOEε4 carrying status, defining a more altered cognitive p...
The aberrant accumulation of α-Synuclein within oligodendrocytes is an enigmatic, pathological feature specific to Multiple system atrophy (MSA). Since the characterization of the disease in 1969, dec...
Orthostatic hypotension (OH) is one of the most important autonomic features of multiple system atrophy (MSA). This study was established to confirm the correlation between lipid levels and OH in MSA....
A total of 580 patients with probable or possible MSA from neurological wards in six hospitals in Tianjin, Beijing, Hebei Province, and Henan Province, China, were included in this study. The tilt tes...
Serum levels of total cholesterol, LDL-C, and triglyceride in MSA-OH patients were significantly lower than those in MSA without OH. The risks of OH were significantly higher in the lowest quartiles o...
Low levels of TC, LDL-C, and triglyceride increased the risk of OH in MSA. A low level of triglyceride predicted severe OH in MSA....
Differentiation cerebellar multiple systemic atrophy (MSA-C) from spinocerebellar ataxia (SCA) is important. The "hot cross bun" sign (HCBS) at pons and magnetic resonance spectroscopy (MRS) are helpf...
We evaluated the value of electrophysiological indicators by external anal sphincter electromyography (EAS-EMG), sympathetic skin response (SSR), R-R interval variation (RRIV), and Bulbocavernosus Ref...
A total of 41 patients with MSA and 32 patients with PD were enrolled. The electrophysiological changes of autonomic dysfunction were assessed with BCR, EAS-EMG, SSR, and RRIV, and the abnormal rate o...
The incidence rate of autonomic dysfunction in MSA group was significantly higher than that in PD group (p < 0.05). The abnormal rates of BCR and EAS-EMG indicators in MSA group were higher than those...
Combined analysis of BCR and EAS-EMG has high sensitivity and specificity for differential diagnosis of MSA and PD....
Multiple system atrophy (MSA) is a progressive neurodegenerative disorder caused by the abnormal accumulation of α-synuclein in the nervous system. Clinical features include autonomic and motor dysfun...
We studied 31 patients with MSA and 54 patients with PD diagnosed according to current clinical consensus criteria. We also included 24 matched controls. All participants underwent neurologic examinat...
Patients with PD had reduced nerve fiber densities compared with patients with MSA (...
α-synuclein is present in the peripheral autonomic nerves of patients with MSA and when combined with synuclein distribution accurately distinguishes MSA from PD....
This study provides Class II evidence that measurement of phosphorylated α-synuclein in skin biopsies can differentiate patients with MSA from those with PD....
Multiple System Atrophy (MSA) is a rare neurodegenerative disease with pronounced autonomic failure (AF). Severe cardiovascular AF is associated with poor prognosis. Since sweating dysfunction is less...
138 MSA patients of the French Reference center for MSA with an annual follow-up including the Unified MSA Rating Scale (UMSARS), COMPASS (autonomic symptoms) and measurements of foot and hand ESC (Su...
Hands and feet ESCs were abnormal in 81/138 (59%) and 93/138 (67%) cases, respectively. Abnormal ESCs were significantly correlated to disease severity and several features of AF. ESCs worsening over ...
Sweating dysfunction assessed by ESC is frequent in MSA and is significantly related to disease severity and AF. The gradual decrease in ESC with disease duration could be useful as a quantitative mar...