questionsmedicales.fr
Bactéries
Bactéries à Gram positif
Bâtonnets à Gram positif
Bâtonnets asporogènes à Gram positif
Bâtonnets asporogènes réguliers à Gram positif
Listeria
Listeria : Questions médicales fréquentes
Termes MeSH sélectionnés :
Diagnostic
5
Listeria
Tests de laboratoire
Symptômes
5
Femmes enceintes
Listeria
Prévention
5
Femmes enceintes
Alimentation
Traitements
5
Efficacité des médicaments
Listeria
Immunodépression
Listeria
Facteurs de risque
5
Facteurs de risque
Listeria
Maladies chroniques
Listeria
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"@type": "Question",
"name": "Comment diagnostique-t-on une infection à Listeria ?",
"position": 1,
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"text": "Le diagnostic se fait par culture de sang ou de liquide céphalorachidien."
}
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{
"@type": "Question",
"name": "Quels tests sont utilisés pour détecter Listeria ?",
"position": 2,
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},
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"@type": "Question",
"name": "Quels symptômes indiquent une infection à Listeria ?",
"position": 3,
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"@type": "Question",
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"@type": "Question",
"name": "Quels sont les symptômes de la listériose ?",
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"position": 8,
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{
"@type": "Question",
"name": "Quels symptômes neurologiques peuvent apparaître ?",
"position": 9,
"acceptedAnswer": {
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"text": "Des maux de tête, confusion, et parfois méningite peuvent se manifester."
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{
"@type": "Question",
"name": "Les symptômes apparaissent-ils rapidement ?",
"position": 10,
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{
"@type": "Question",
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"position": 11,
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"@type": "Question",
"name": "Le lavage des mains aide-t-il à prévenir Listeria ?",
"position": 12,
"acceptedAnswer": {
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}
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{
"@type": "Question",
"name": "Les femmes enceintes doivent-elles éviter certains aliments ?",
"position": 13,
"acceptedAnswer": {
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}
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{
"@type": "Question",
"name": "La cuisson des aliments élimine-t-elle Listeria ?",
"position": 14,
"acceptedAnswer": {
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}
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"position": 15,
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"name": "Quel est le traitement principal de la listériose ?",
"position": 16,
"acceptedAnswer": {
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}
},
{
"@type": "Question",
"name": "Les antibiotiques sont-ils efficaces contre Listeria ?",
"position": 17,
"acceptedAnswer": {
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"text": "Oui, Listeria est généralement sensible à plusieurs antibiotiques."
}
},
{
"@type": "Question",
"name": "Faut-il hospitaliser les patients atteints de listériose ?",
"position": 18,
"acceptedAnswer": {
"@type": "Answer",
"text": "Cela dépend de la gravité des symptômes, surtout chez les personnes à risque."
}
},
{
"@type": "Question",
"name": "Y a-t-il des traitements préventifs ?",
"position": 19,
"acceptedAnswer": {
"@type": "Answer",
"text": "Non, il n'existe pas de vaccin, mais une bonne hygiène alimentaire est essentielle."
}
},
{
"@type": "Question",
"name": "Les patients immunodéprimés nécessitent-ils un traitement différent ?",
"position": 20,
"acceptedAnswer": {
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"text": "Oui, ils peuvent nécessiter des traitements plus agressifs et prolongés."
}
},
{
"@type": "Question",
"name": "Quelles sont les complications possibles de la listériose ?",
"position": 21,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les complications incluent la méningite, l'abcès cérébral et la septicémie."
}
},
{
"@type": "Question",
"name": "La listériose peut-elle être mortelle ?",
"position": 22,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elle peut être fatale, surtout chez les personnes vulnérables."
}
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{
"@type": "Question",
"name": "Quels sont les risques pour le fœtus ?",
"position": 23,
"acceptedAnswer": {
"@type": "Answer",
"text": "L'infection peut entraîner des avortements, des naissances prématurées ou des infections néonatales."
}
},
{
"@type": "Question",
"name": "Les personnes âgées sont-elles plus à risque de complications ?",
"position": 24,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, elles sont plus susceptibles de développer des formes graves de la maladie."
}
},
{
"@type": "Question",
"name": "Comment les complications sont-elles traitées ?",
"position": 25,
"acceptedAnswer": {
"@type": "Answer",
"text": "Elles nécessitent souvent une hospitalisation et un traitement antibiotique intensif."
}
},
{
"@type": "Question",
"name": "Qui est le plus à risque de contracter Listeria ?",
"position": 26,
"acceptedAnswer": {
"@type": "Answer",
"text": "Les personnes âgées, les femmes enceintes et les immunodéprimés sont les plus à risque."
}
},
{
"@type": "Question",
"name": "Les personnes atteintes de maladies chroniques sont-elles à risque ?",
"position": 27,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les maladies comme le diabète augmentent le risque d'infection."
}
},
{
"@type": "Question",
"name": "Les nourrissons sont-ils vulnérables à Listeria ?",
"position": 28,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, les nourrissons ont un système immunitaire immature et sont très vulnérables."
}
},
{
"@type": "Question",
"name": "Le mode de vie influence-t-il le risque d'infection ?",
"position": 29,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, des habitudes alimentaires et d'hygiène précaires augmentent le risque."
}
},
{
"@type": "Question",
"name": "Les voyageurs doivent-ils se méfier de Listeria ?",
"position": 30,
"acceptedAnswer": {
"@type": "Answer",
"text": "Oui, ils doivent être prudents avec les aliments dans les pays à risque."
}
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Expert en Médecine, Optimisation des Parcours de Soins et Révision Médicale
Validation scientifique effectuée le 14/04/2025
Contenu vérifié selon les dernières recommandations médicales
5 publications dans cette catégorie
Affiliations :
5Division of Infectious Diseases and Tropical Medicine, Paris Descartes University, Sorbonne Paris Cité, Institut Imagine, Necker-Enfants Malades University Hospital, APHP, Paris, France.
2Biology of Infection Unit, Institut Pasteur, Paris, France.
3Inserm U1117, Paris, France.
1Institut Pasteur, National Reference Centre and WHO Collaborating Centre for Listeria, Paris, France.
Publications dans "Listeria" :
4 publications dans cette catégorie
Affiliations :
Department of Food Science, Cornell University, Ithaca, NY 14853, USA.
Publications dans "Listeria" :
3 publications dans cette catégorie
Affiliations :
1Institut Pasteur, National Reference Centre and WHO Collaborating Centre for Listeria, Paris, France.
3Inserm U1117, Paris, France.
2Biology of Infection Unit, Institut Pasteur, Paris, France.
Publications dans "Listeria" :
3 publications dans cette catégorie
Affiliations :
Q Laboratories, 1930 Radcliff Dr, Cincinnati, OH 45204.
Publications dans "Listeria" :
3 publications dans cette catégorie
Affiliations :
Q Laboratories, 1930 Radcliff Dr, Cincinnati, OH 45204.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Department of Health, Animal Science and Food Safety, University of Milan, Italy.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Department of Health, Animal Science and Food Safety, University of Milan, Italy.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Department of Health, Animal Science and Food Safety, University of Milan, Italy.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Department of Food Science and Technology, Eastern Shore Agricultural Research and Extension Center, Virginia Tech, Painter, Virginia 23420.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
3Inserm U1117, Paris, France.
1Institut Pasteur, National Reference Centre and WHO Collaborating Centre for Listeria, Paris, France.
2Biology of Infection Unit, Institut Pasteur, Paris, France.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Bacteria-Cell Interactions Unit, Institut Pasteur, Paris, France.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Yersinia Research Unit, Paris, France. pizarroj@pasteur.fr.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Q Laboratories, 1930 Radcliff Dr, Cincinnati, OH 45204.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
U.S. Food and Drug Administration, Center for Food Safety and Applied Nutrition, 5001 Campus Dr, College Park, MD 20740.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Agroécologie, AgroSup Dijon, CNRS, INRAE, University Bourgogne Franche-Comté, Dijon, France.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Agroécologie, AgroSup Dijon, CNRS, INRAE, University Bourgogne Franche-Comté, Dijon, France.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
INRAE UR OPAALE, Rennes, France.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Institut Pasteur, Biology of Infection Unit, 75015, Paris, France; Inserm U1117, 75015, Paris, France.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Université Paris-Saclay, INRAE, AgroParisTech, Micalis Institute, Jouy-en-Josas, France. helene.bierne@inrae.fr.
Publications dans "Listeria" :
2 publications dans cette catégorie
Affiliations :
Unité des Interactions Bactéries-Cellules, Institut Pasteur, Paris, France.
Departamento Producción y Sanidad Animal, Salud Pública Veterinaria y Ciencia y Tecnología de los Alimentos. Facultad de Veterinaria. Universidad Cardenal Herrera-CEU, CEU Universities. Valencia, Spain.
Publications dans "Listeria" :
The choice of appropriate physical quantities to characterize the biological effects of ionizing radiation has evolved over time coupled with advances in scientific understanding. The basic hypothesis...
We quantified the effect of various forward-based treatment-planning strategies in proton therapy on dose-weighted linear energy transfer (LETd). By maintaining the dosimetric quality at a clinically ...
Eight treatment-planning strategies that are achievable in commercial treatment-planning systems were applied on a cylindrical water phantom and four pediatric brain tumor cases. Each planning strateg...
In the phantom study, using a range shifter and altering the robust scenarios during optimization had the largest effect on the mean clinical target volume LETd, which was reduced from 4.5 to 3.9 keV/...
Changes in LETd from treatment-plan setup follow intuitive trends in a controlled phantom experiment. Anatomical and other patient-specific considerations, however, can preclude generalizable strategi...
Compelling evidence shows the association between the relative biological effectiveness (RBE) of carbon-ion radiotherapy (CIRT) and the dose averaged linear energy transfer (LETd). However, the abilit...
This study aims to develop a method of calculating the LETd of CIRT plans that could be robustly carried out in RayStation (V10B, Raysearch, Sweden)....
The calculation used the fragment spectra in RayStation for the CIRT treatment planning. The dose-weighted averaging procedure was supported by the microdosimetric kinetic model (MKM). The MKM-based p...
The differences in LETds of the monoenergetic beams between the new method and the traditional method were within 3% in the entrance and Bragg-peak regions. However, a larger difference was observed i...
The method presented herein reformulates the MKM dose engine in the RayStation TPS to inversely calculate LETds. The robustness and accuracy were demonstrated....
The precise assessment of the dose distribution of high linear energy transfer (LET) radiation remains a challenge, because the signal of most dosimeters will be saturated due to the high ionization d...
Nanoclay radio-fluorogenic gel (NC-RFG) dosimeters were prepared, typically containing 100 μM dihydrorhodamine 123 (DHR123) and 2.0 wt% nanoclay together with catalytic additives promoting Fenton or F...
An NC-RFG dosimeter capable of generating a fluorescence intensity distribution reflecting the carbon-ion beam dose profile was obtained. It was clarified that the reduction of the unfavorable LET dep...
This technique allows the first-ever evaluation of the depth-dose profile of a carbon-ion beam at typical therapeutic levels of several Gy without LET effect....
In modern radiotherapy with photons, the absorbed dose outside the radiation field is generally investigated. But it is well known that the biological damage depends not only on the absorbed dose but ...
The use of radiation with low and high linear energy transfer (LET) in the same treatment regimen is promising in terms of increasing the efficiency and reducing the severity of radiation complication...
Different alpha exposure setups are often used to study the relation between biological responses and LET. This study aimed to estimate the dose heterogeneity and uncertainty in four exposure setups u...
Geant4 was used to estimate the dose distributions in cells grown on a disk exposed to alpha particles penetrating from above and below. The latter setup was simulated without and with a collimator. P...
The LET distributions obtained for simulated setups excluding the collimator were wide and non-Gaussian. Using a collimator resulted in a Gaussian LET distribution, but strongly reduced dose rate and ...
The interpretation of results from radiobiological experiments with alpha particles should always cover the characteristics of the experimental setup, which can be done precisely with computational me...
The correlation between dose-averaged linear energy transfer (LETd) and its therapeutic or adverse effects, especially in carbon-ion radiotherapy (CIRT), remains controversial. This study aimed to inv...
Among patients who underwent CIRT for uterine carcinoma, 101 who were followed up for > 6 months without any other therapy were retrospectively analyzed. The sacrum insufficiency fractures (SIFs) were...
At the last follow-up, 19 patients developed SIFs. Receiver operating characteristic curve analysis revealed that the sacrum D50% RBE-weighted dose was a valuable predictor of SIF. Univariate analyses...
The sacrum D50% RBE-weighted dose was identified as a risk factor for SIF. Additionally, neither LETd nor physical dose parameters were associated with SIF prediction....
The increasing number of studies dealing with linear energy transfer (LET)-based evaluation and optimization in the field of carbon ion radiotherapy (CIRT) indicates the rising demand for LET implemen...
This in silico study was conducted to benchmark the following two LET-related functionalities in a commercial TPS against Monte Carlo simulations: (1) dose averaged LET (LET...
The LET...
For all setups (homogeneous and heterogeneous), the mean absolute (and relative) LET...
No computation error was found in the tested functionalities except for LET...
A fixed relative biological effectiveness (RBE) of 1.1 (RBE...
36 patients treated with passive scattering proton therapy were selected for a case-control study from a cohort of 954 pediatric brain tumor patients. Nine children with symptomatic brainstem toxicity...
LET...
Trends towards higher LET...