Titre : Vecteurs génétiques

Vecteurs génétiques : Questions médicales fréquentes

Termes MeSH sélectionnés :

Methicillin-Resistant Staphylococcus aureus
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tests pour évaluer l'efficacité d'un vecteur ?\nQuels marqueurs sont utilisés pour les vecteurs ?\nComment détecter des vecteurs viraux ?\nQuels sont les critères de sécurité des vecteurs ?", "url": "https://questionsmedicales.fr/mesh/D005822?mesh_terms=Methicillin-Resistant+Staphylococcus+aureus&page=2#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Vecteurs génétiques", "description": "Quels symptômes d'une thérapie génique ?\nY a-t-il des effets secondaires des vecteurs ?\nComment les vecteurs affectent-ils les cellules ?\nQuels signes d'infection par vecteur viral ?\nLes vecteurs peuvent-ils causer des tumeurs ?", "url": "https://questionsmedicales.fr/mesh/D005822?mesh_terms=Methicillin-Resistant+Staphylococcus+aureus&page=2#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Vecteurs génétiques", "description": "Comment prévenir les effets indésirables des vecteurs ?\nY a-t-il des 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vecteurs ?\nLes vecteurs peuvent-ils causer des maladies auto-immunes ?\nComment gérer les complications des vecteurs ?\nLes vecteurs peuvent-ils provoquer des allergies ?\nQuels sont les risques de transmission de maladies ?", "url": "https://questionsmedicales.fr/mesh/D005822?mesh_terms=Methicillin-Resistant+Staphylococcus+aureus&page=2#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Vecteurs génétiques", "description": "Quels facteurs augmentent les risques liés aux vecteurs ?\nLes patients immunodéprimés sont-ils à risque ?\nComment l'âge influence-t-il les risques ?\nLes antécédents d'allergies sont-ils un facteur ?\nQuels vecteurs sont plus risqués ?", "url": "https://questionsmedicales.fr/mesh/D005822?mesh_terms=Methicillin-Resistant+Staphylococcus+aureus&page=2#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment identifier un vecteur génétique ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "Les vecteurs génétiques sont identifiés par leur capacité à transporter des gènes et à les exprimer." } }, { "@type": "Question", "name": "Quels tests pour évaluer l'efficacité d'un vecteur ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des tests de transfection et d'expression génique sont utilisés pour évaluer l'efficacité." } }, { "@type": "Question", "name": "Quels marqueurs sont utilisés pour les vecteurs ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Des marqueurs fluorescents ou de résistance aux antibiotiques sont souvent utilisés." } }, { "@type": "Question", "name": "Comment détecter des vecteurs viraux ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "Des techniques comme la PCR et le séquençage sont utilisées pour détecter des vecteurs viraux." } }, { "@type": "Question", "name": "Quels sont les critères de sécurité des vecteurs ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Les vecteurs doivent être non pathogènes et ne pas induire de réponse immunitaire excessive." } }, { "@type": "Question", "name": "Quels symptômes d'une thérapie génique ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Les symptômes peuvent inclure des réactions immunitaires, des inflammations ou des douleurs." } }, { "@type": "Question", "name": "Y a-t-il des effets secondaires des vecteurs ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des effets secondaires comme des nausées ou des réactions allergiques peuvent survenir." } }, { "@type": "Question", "name": "Comment les vecteurs affectent-ils les cellules ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Les vecteurs peuvent modifier l'expression génique, entraînant des changements fonctionnels." } }, { "@type": "Question", "name": "Quels signes d'infection par vecteur viral ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Les signes incluent fièvre, fatigue, et symptômes respiratoires selon le vecteur." } }, { "@type": "Question", "name": "Les vecteurs peuvent-ils causer des tumeurs ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Il existe un risque théorique que certains vecteurs induisent des tumeurs par insertion génique." } }, { "@type": "Question", "name": "Comment prévenir les effets indésirables des vecteurs ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Une évaluation rigoureuse et des tests précliniques peuvent aider à prévenir les effets indésirables." } }, { "@type": "Question", "name": "Y a-t-il des protocoles de sécurité pour les vecteurs ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des protocoles de sécurité stricts sont établis pour l'utilisation des vecteurs en recherche." } }, { "@type": "Question", "name": "Comment minimiser les risques d'infection ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Utiliser des vecteurs non pathogènes et suivre des pratiques de laboratoire sécurisées." } }, { "@type": "Question", "name": "Les vaccins utilisent-ils des vecteurs ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "Oui, certains vaccins utilisent des vecteurs pour introduire des antigènes dans l'organisme." } }, { "@type": "Question", "name": "Comment évaluer la sécurité des vecteurs ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Des études cliniques et des évaluations de risques sont nécessaires pour évaluer la sécurité." } }, { "@type": "Question", "name": "Comment les vecteurs sont-ils utilisés en thérapie ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Ils sont utilisés pour délivrer des gènes thérapeutiques dans des cellules cibles." } }, { "@type": "Question", "name": "Quels types de vecteurs sont courants ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Les vecteurs viraux, plasmidiques et lipidiques sont couramment utilisés." } }, { "@type": "Question", "name": "Comment choisir un vecteur pour un traitement ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Le choix dépend de la cible cellulaire, de la taille du gène et de la sécurité." } }, { "@type": "Question", "name": "Quels vecteurs pour les maladies héréditaires ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Les vecteurs viraux comme les lentivirus sont souvent utilisés pour les maladies héréditaires." } }, { "@type": "Question", "name": "Les vecteurs peuvent-ils être administrés par voie orale ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Certains vecteurs peuvent être administrés oralement, mais l'efficacité est souvent limitée." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec les vecteurs ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des complications incluent des réactions immunitaires, des infections et des tumeurs." } }, { "@type": "Question", "name": "Les vecteurs peuvent-ils causer des maladies auto-immunes ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Il existe un risque potentiel que certains vecteurs déclenchent des maladies auto-immunes." } }, { "@type": "Question", "name": "Comment gérer les complications des vecteurs ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "La gestion inclut le suivi médical, des traitements symptomatiques et des ajustements de dosage." } }, { "@type": "Question", "name": "Les vecteurs peuvent-ils provoquer des allergies ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des réactions allergiques peuvent survenir en réponse aux vecteurs utilisés." } }, { "@type": "Question", "name": "Quels sont les risques de transmission de maladies ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Il y a un risque de transmission de maladies si des vecteurs viraux sont mal utilisés." } }, { "@type": "Question", "name": "Quels facteurs augmentent les risques liés aux vecteurs ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Les antécédents médicaux, l'âge et le type de vecteur utilisé peuvent augmenter les risques." } }, { "@type": "Question", "name": "Les patients immunodéprimés sont-ils à risque ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Oui, les patients immunodéprimés peuvent avoir un risque accru d'effets indésirables." } }, { "@type": "Question", "name": "Comment l'âge influence-t-il les risques ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "L'âge avancé peut affecter la réponse immunitaire et augmenter les risques d'effets indésirables." } }, { "@type": "Question", "name": "Les antécédents d'allergies sont-ils un facteur ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Oui, des antécédents d'allergies peuvent augmenter le risque de réactions aux vecteurs." } }, { "@type": "Question", "name": "Quels vecteurs sont plus risqués ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "Les vecteurs viraux, en particulier ceux dérivés de virus pathogènes, présentent plus de risques." } } ] } ] }

Sources (10000 au total)

Methicillin-resistant Staphylococcus aureus-associated orbital cellulitis: a case series.

In recent years, methicillin-resistant Staphylococcus aureus (MRSA) orbital cellulitis (OC) has drawn increasing clinical and public health concern. We present a case series of MRSA OC encountered at ... A multi-centre retrospective case series investigating MRSA OC in Australia from 2013 to 2022. Patients of all ages were included.... Nine cases of culture-positive non-multi-resistant MRSA (nmMRSA) OC were identified at four tertiary institutions across Australia (7 male, 2 female). Mean age was 17.1 ± 16.7 years (range 13-days to ... NMMRSA OC can follow an aggressive clinical course causing severe orbital and intracranial complications across a wide demographic. However, early recognition, initiation of targeted antibiotics and s...

Predictors of Methicillin-resistant Staphylococcus aureus infection in children with acute osteomyelitis.

This study aims to identify risk factors associated with Methicillin-resistant Staphylococcus aureus (MRSA) infection in children diagnosed with acute osteomyelitis (AO) and to elucidate the laborator... We conducted a retrospective analysis involving 123 children with acute osteomyelitis treated at our hospital. Upon admission, we measured white blood cell (WBC) counts, C-reactive protein (CRP) level... The MRSA group had a significantly higher average age compared to the non-MRSA group (P < 0.05). Notably, the incidence of suppurative arthritis was significantly lower in the MRSA group (P < 0.05). A... In children newly admitted with acute osteomyelitis, a CRP level exceeding 73.23 µg/mL may indicate a high likelihood of MRSA infection. For children with AO who have been hospitalized for three days ...

[Prevalence and risk factors for methicillin-resistant Staphylococcus aureus infection in children].

The objectives of this work were to know the prevalence of methicillin-resistant S. aureus (MRSA) infections in the paediatric population of our health department, to describe the risk factors for inf... A retrospective, descriptive and analytical study of infections produced by MRSA versus those produced by MSSA was carried out during the years 2014 to 2018. Risk factors for MRSA infection were studi... 162 patients with S. aureus infections were identified. Of these, 25 (15.4%) were MRSA. The highest percentages of MRSA infection occurred among children who required hospital admission (23.4%). In th... Our results suggest the need to review empirical local treatment regimen using drugs active against MRSA in infections of probable staphylococcal origin admitted to the hospital, especially if they ha...

Vancomycin plus ceftaroline for persistent methicillin-resistant Staphylococcus aureus bacteremia.

The preferred antibiotic salvage regimen for persistent methicillin-resistant Staphylococcus aureus bacteremia (MRSAB) is unclear. We sought to evaluate the effectiveness and safety of vancomycin plus... Single-center, retrospective cohort study between January 1, 2016, and December 31, 2021.... State University of New York Upstate University Hospital, a 748-bed tertiary care, academic medical center in Syracuse, NY.... Adult patients were included if they had blood cultures positive for MRSA ≥72 h, received vancomycin monotherapy initially, and received vancomycin plus ceftaroline for ≥24 h. Patients were excluded i... Patients were medically complex with a median Pitt bacteremia score of 3, 63.3% (19/30) were admitted to the intensive care unit, and 66.7% (20/30) had infective endocarditis. Vancomycin-associated ac... Vancomycin plus ceftaroline may represent an effective and well-tolerated salvage regimen option for persistent MRSAB....

Rate of methicillin-resistant Staphylococcus aureus in pediatric emergency departments in Spain.

Staphylococcus aureus is a common germ in bacterial infections in children. The rate of methicillin-resistant S. aureus (MRSA) is increasing lately.... The main aim is to know the rate of positive cultures to MRSA in Spanish pediatric emergency departments. The secondary aims are to analyse the risk factors for MRSA isolation (patient origin, history... Retrospective multicenter study (07/01/2017-06/30/2018) with review of patient histories with isolation of S. aureus in samples of any origin obtained in 8 pediatric emergency departments of the Infec... During this period, S. aureus was detected in 403 patients (average age 75.8 ± 59.2 months; 54.8% male): 28.8% hospital-related infections (HRI) and 71.2% community-related infections (CRI). Overall, ... The overall MRSA rate was one in 6 staphylococcal infections. Higher MRSA rates were detected in samples of suppurating skin injuries and in foreign children or in children with a history of previous ...

Evaluation of the synergistic effect of ceftaroline against methicillin-resistant Staphylococcus aureus.

We aimed to determine the synergistic effects of ceftaroline (CPT) in combination with daptomycin (DAP), vancomycin (VAN), or linezolid (LNZ) against various methicillin-resistant Staphylococcus aureu... MRSA strains randomly selected from 2014 to 2018 were studied. Checkerboard titration and in vitro time-kill analyses were used to determine the synergistic activities of the antibiotic combinations.... A total of 10 genetically distinct MRSA strains were included in this study. The checkerboard titration analysis revealed that the CPT-DAP, CPT-VAN, and CPT-LNZ combinations had a synergistic effect a... The CPT-DAP combination showed better synergistic activity than the CPT-VAN and CPT-LNZ combinations against the enrolled MRSA strains. DAP, rather than VAN or LNZ, might be a better choice for CPT co...

Using Methicillin-Resistant Staphylococcus aureus Nasal Screens to Rule Out Methicillin-Resistant S aureus Pneumonia in Surgical Intensive Care Units.

The methicillin-resistant Staphylococcus aureus (MRSA) polymerase chain reaction (PCR) has a high negative predictive value (NPV). We aimed to understand if there was a difference in the NPV of the MR... We performed a single-center, retrospective cohort study of adults with a positive respiratory culture and MRSA nasal PCR admitted to a surgical ICU from 2016 to 2019. Patients were stratified by surg... We analyzed 61 patients: 42.6% (n = 26) ACS-ICU and 57.4% (n = 35) CVICU. There were no differences in age, comorbidities, prior MRSA infection, recent antibiotic use, immunocompromised status, or ren... The MRSA nasal PCR screen has a high NPV for ruling out MRSA pneumonia in critically ill surgical patients. However, patients in the CVICU and patients hospitalized ≥5 d had a longer time to de-escala...

Molecular epidemiology, virulence and antimicrobial resistance of Bulgarian methicillin resistant Staphylococcus aureus isolates.

Severe infections of virulent methicillin-resistant Staphylococcus aureus (MRSA) are a serious health problem. The present study aimed to investigate clonal spread, virulence and antimicrobial resista... Molecular identification and mecA gene detection were performed with PCR. Clonal relatedness was evaluated by RAPD PCR and MLST. MRSA epidemiology, virulence and resistance patterns were investigated ... All 27 isolates were identified as S. aureus and were mecA positive, and all were susceptible to linezolid, tigecycline and vancomycin. The toxin genes hlg (in 92.6% of isolates), seb (77.8%), sei (77... To the best of our knowledge, this study is the first describing the clonal spreading of Bulgarian MRSA and the association with their virulence and resistance determinants. Monitoring of MRSA epidemi...

Comparing Rates of Postoperative Meningitis After Endoscopic Endonasal Procedures Based on Methicillin-Resistant Staphylococcus aureus/Methicillin-Sensitive Staphylococcus aureus Colonization and Antibiotic Prophylaxis.

Endoscopic endonasal approach (EEA) procedures are inherently contaminated due to direct access through the nasopharyngeal mucosa. The reported rate of postoperative meningitis in EEA procedures is 0.... All adult patients who underwent EEA resection at our institution from 2013 to 2021 were retrospectively reviewed. Patients with preoperative cerebrospinal fluid infections were excluded. Data includi... Of 483 patients identified (mean age, 51 years; range, 18-90 years; 274 [56.7%] female), 80 (16.6%) had a positive preoperative methicillin-resistant Staphylococcus aureus (MRSA)/methicillin-sensitive... Postoperative rates of meningitis after EEA surgery were not significantly changed based on MRSA/MSSA colonization status of the patient or preoperative decolonization. The utility of preoperative tes...