Titre : Double couche lipidique

Double couche lipidique : Questions médicales fréquentes

Termes MeSH sélectionnés :

Myocardial Contraction
{ "@context": "https://schema.org", "@graph": [ { "@type": "MedicalWebPage", "name": "Double couche lipidique : Questions médicales les plus fréquentes", "headline": "Double couche lipidique : Comprendre les symptômes, diagnostics et traitements", "description": "Guide complet et accessible sur les Double couche lipidique : explications, diagnostics, traitements et prévention. Information médicale validée destinée aux patients.", "datePublished": "2024-02-21", "dateModified": "2025-02-15", "inLanguage": "fr", "medicalAudience": [ { "@type": "MedicalAudience", "name": "Grand public", "audienceType": "Patient", "healthCondition": { "@type": "MedicalCondition", "name": "Double couche lipidique" }, "suggestedMinAge": 18, "suggestedGender": "unisex" }, { "@type": "MedicalAudience", "name": "Médecins", "audienceType": "Physician", "geographicArea": { "@type": "AdministrativeArea", "name": "France" } }, { "@type": "MedicalAudience", "name": "Chercheurs", "audienceType": "Researcher", "geographicArea": { "@type": "AdministrativeArea", "name": "International" } } ], "reviewedBy": { "@type": "Person", "name": "Dr Olivier Menir", "jobTitle": "Expert en Médecine", "description": "Expert en Médecine, Optimisation des Parcours de Soins et Révision Médicale", "url": "/static/pages/docteur-olivier-menir.html", "alumniOf": { "@type": "EducationalOrganization", "name": "Université Paris Descartes" } }, "isPartOf": { "@type": "MedicalWebPage", "name": "Membrane artificielle", "url": "https://questionsmedicales.fr/mesh/D008567", "about": { "@type": "MedicalCondition", "name": "Membrane artificielle", "code": { "@type": "MedicalCode", "code": "D008567", "codingSystem": "MeSH" }, "identifier": { "@type": "PropertyValue", "propertyID": "MeSH Tree", "value": "J01.637.087.500" } } }, "about": { "@type": "MedicalCondition", "name": "Double couche lipidique", "alternateName": "Lipid Bilayers", "code": { "@type": "MedicalCode", "code": "D008051", "codingSystem": "MeSH" } }, "author": [ { "@type": "Person", "name": "John F Nagle", "url": "https://questionsmedicales.fr/author/John%20F%20Nagle", "affiliation": { "@type": "Organization", "name": "Department of Physics , Carnegie Mellon University , Pittsburgh , Pennsylvania 15213 , United States." } }, { "@type": "Person", "name": "Jinyoung Seo", "url": "https://questionsmedicales.fr/author/Jinyoung%20Seo", "affiliation": { "@type": "Organization", "name": "Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea." } }, { "@type": "Person", "name": "Sungi Kim", "url": "https://questionsmedicales.fr/author/Sungi%20Kim", "affiliation": { "@type": "Organization", "name": "Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea." } }, { "@type": "Person", "name": "Ha H Park", "url": "https://questionsmedicales.fr/author/Ha%20H%20Park", "affiliation": { "@type": "Organization", "name": "Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea." } }, { "@type": "Person", "name": "Jwa-Min Nam", "url": "https://questionsmedicales.fr/author/Jwa-Min%20Nam", "affiliation": { "@type": "Organization", "name": "Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, South Korea." } } ], "citation": [ { "@type": "ScholarlyArticle", "name": "Huxley muscle model surrogates for high-speed multi-scale simulations of cardiac contraction.", "datePublished": "2022-08-27", "url": "https://questionsmedicales.fr/article/36058066", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1016/j.compbiomed.2022.105963" } }, { "@type": "ScholarlyArticle", "name": "Acetate suppresses myocardial contraction", "datePublished": "2022-12-16", "url": "https://questionsmedicales.fr/article/36589441", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.3389/fphys.2022.1111156" } }, { "@type": "ScholarlyArticle", "name": "A Carbon-Based Biosensing Platform for Simultaneously Measuring the Contraction and Electrophysiology of iPSC-Cardiomyocyte Monolayers.", "datePublished": "2022-06-17", "url": "https://questionsmedicales.fr/article/35715006", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1021/acsnano.2c04676" } }, { "@type": "ScholarlyArticle", "name": "Role of myocardial strain imaging in diagnosing inducible myocardial ischemia with treadmill contrast-enhanced stress echocardiography.", "datePublished": "2024-05-16", "url": "https://questionsmedicales.fr/article/38750460", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1186/s12872-024-03926-8" } }, { "@type": "ScholarlyArticle", "name": "Ultrasound Visualization and Recording of Transient Myocardial Vibrations.", "datePublished": "2023-03-27", "url": "https://questionsmedicales.fr/article/36990961", "identifier": { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1016/j.ultrasmedbio.2023.02.006" } } ], "breadcrumb": { "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "questionsmedicales.fr", "item": "https://questionsmedicales.fr" }, { "@type": "ListItem", "position": 2, "name": "Technologie, industrie et agriculture", "item": "https://questionsmedicales.fr/mesh/D013676" }, { "@type": "ListItem", "position": 3, "name": "Produits manufacturés", "item": "https://questionsmedicales.fr/mesh/D008420" }, { "@type": "ListItem", "position": 4, "name": "Matériaux biomimétiques", "item": "https://questionsmedicales.fr/mesh/D040761" }, { "@type": "ListItem", "position": 5, "name": "Membrane artificielle", "item": "https://questionsmedicales.fr/mesh/D008567" }, { "@type": "ListItem", "position": 6, "name": "Double couche lipidique", "item": "https://questionsmedicales.fr/mesh/D008051" } ] } }, { "@type": "MedicalWebPage", "name": "Article complet : Double couche lipidique - Questions et réponses", "headline": "Questions et réponses médicales fréquentes sur Double couche lipidique", "description": "Une compilation de questions et réponses structurées, validées par des experts médicaux.", "datePublished": "2025-05-09", "inLanguage": "fr", "hasPart": [ { "@type": "MedicalWebPage", "name": "Diagnostic", "headline": "Diagnostic sur Double couche lipidique", "description": "Comment identifier une double couche lipidique ?\nQuels tests peuvent évaluer la fluidité des membranes ?\nQuels indicateurs montrent une défaillance de la membrane ?\nComment les lipides sont-ils analysés dans les membranes ?\nQuels marqueurs biochimiques signalent des anomalies ?", "url": "https://questionsmedicales.fr/mesh/D008051?mesh_terms=Myocardial+Contraction&page=2#section-diagnostic" }, { "@type": "MedicalWebPage", "name": "Symptômes", "headline": "Symptômes sur Double couche lipidique", "description": "Quels symptômes indiquent une dysfonction membranaire ?\nComment la fluidité affecte-t-elle la fonction cellulaire ?\nQuels effets sur la santé sont liés aux membranes ?\nQuels signes cliniques sont associés aux membranes ?\nComment les membranes influencent-elles l'immunité ?", "url": "https://questionsmedicales.fr/mesh/D008051?mesh_terms=Myocardial+Contraction&page=2#section-symptômes" }, { "@type": "MedicalWebPage", "name": "Prévention", "headline": "Prévention sur Double couche lipidique", "description": "Comment prévenir les maladies liées aux membranes ?\nQuels modes de vie favorisent la santé membranaire ?\nComment éviter l'oxydation des membranes ?\nQuels facteurs environnementaux affectent les membranes ?\nComment le stress influence-t-il la santé membranaire ?", "url": "https://questionsmedicales.fr/mesh/D008051?mesh_terms=Myocardial+Contraction&page=2#section-prévention" }, { "@type": "MedicalWebPage", "name": "Traitements", "headline": "Traitements sur Double couche lipidique", "description": "Quels traitements ciblent les membranes cellulaires ?\nComment les lipides peuvent-ils être manipulés ?\nQuels suppléments peuvent améliorer la santé membranaire ?\nComment les antioxydants aident-ils les membranes ?\nQuels traitements sont utilisés pour les maladies membranaires ?", "url": "https://questionsmedicales.fr/mesh/D008051?mesh_terms=Myocardial+Contraction&page=2#section-traitements" }, { "@type": "MedicalWebPage", "name": "Complications", "headline": "Complications sur Double couche lipidique", "description": "Quelles complications peuvent survenir avec des membranes altérées ?\nComment les membranes affectent-elles le cancer ?\nQuels troubles neurologiques sont liés aux membranes ?\nComment les infections impactent-elles les membranes ?\nQuelles sont les conséquences d'une défaillance membranaire ?", "url": "https://questionsmedicales.fr/mesh/D008051?mesh_terms=Myocardial+Contraction&page=2#section-complications" }, { "@type": "MedicalWebPage", "name": "Facteurs de risque", "headline": "Facteurs de risque sur Double couche lipidique", "description": "Quels facteurs génétiques influencent la santé membranaire ?\nComment l'alimentation impacte-t-elle les membranes ?\nQuels comportements augmentent le risque de maladies membranaires ?\nComment l'âge affecte-t-il la santé des membranes ?\nQuels facteurs environnementaux sont des risques pour les membranes ?", "url": "https://questionsmedicales.fr/mesh/D008051?mesh_terms=Myocardial+Contraction&page=2#section-facteurs de risque" } ] }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Comment identifier une double couche lipidique ?", "position": 1, "acceptedAnswer": { "@type": "Answer", "text": "L'observation au microscope électronique révèle la structure en double couche." } }, { "@type": "Question", "name": "Quels tests peuvent évaluer la fluidité des membranes ?", "position": 2, "acceptedAnswer": { "@type": "Answer", "text": "Des tests de diffusion de marqueurs fluorescents peuvent être utilisés." } }, { "@type": "Question", "name": "Quels indicateurs montrent une défaillance de la membrane ?", "position": 3, "acceptedAnswer": { "@type": "Answer", "text": "Une augmentation de la perméabilité et des fuites de protéines sont des indicateurs." } }, { "@type": "Question", "name": "Comment les lipides sont-ils analysés dans les membranes ?", "position": 4, "acceptedAnswer": { "@type": "Answer", "text": "L'analyse par chromatographie permet d'étudier la composition lipidique." } }, { "@type": "Question", "name": "Quels marqueurs biochimiques signalent des anomalies ?", "position": 5, "acceptedAnswer": { "@type": "Answer", "text": "Des niveaux élevés de lipides oxydés peuvent indiquer des anomalies membranaires." } }, { "@type": "Question", "name": "Quels symptômes indiquent une dysfonction membranaire ?", "position": 6, "acceptedAnswer": { "@type": "Answer", "text": "Des troubles métaboliques et des inflammations peuvent survenir." } }, { "@type": "Question", "name": "Comment la fluidité affecte-t-elle la fonction cellulaire ?", "position": 7, "acceptedAnswer": { "@type": "Answer", "text": "Une fluidité altérée peut perturber le transport des protéines et des ions." } }, { "@type": "Question", "name": "Quels effets sur la santé sont liés aux membranes ?", "position": 8, "acceptedAnswer": { "@type": "Answer", "text": "Des maladies comme l'athérosclérose sont liées à des anomalies des membranes." } }, { "@type": "Question", "name": "Quels signes cliniques sont associés aux membranes ?", "position": 9, "acceptedAnswer": { "@type": "Answer", "text": "Des signes comme l'œdème et la déshydratation peuvent être observés." } }, { "@type": "Question", "name": "Comment les membranes influencent-elles l'immunité ?", "position": 10, "acceptedAnswer": { "@type": "Answer", "text": "Les membranes régulent l'activation des cellules immunitaires et la signalisation." } }, { "@type": "Question", "name": "Comment prévenir les maladies liées aux membranes ?", "position": 11, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation équilibrée riche en acides gras essentiels aide à maintenir la santé." } }, { "@type": "Question", "name": "Quels modes de vie favorisent la santé membranaire ?", "position": 12, "acceptedAnswer": { "@type": "Answer", "text": "L'exercice régulier et l'hydratation adéquate sont essentiels." } }, { "@type": "Question", "name": "Comment éviter l'oxydation des membranes ?", "position": 13, "acceptedAnswer": { "@type": "Answer", "text": "Consommer des aliments riches en antioxydants aide à protéger les membranes." } }, { "@type": "Question", "name": "Quels facteurs environnementaux affectent les membranes ?", "position": 14, "acceptedAnswer": { "@type": "Answer", "text": "La pollution et les toxines peuvent endommager les membranes cellulaires." } }, { "@type": "Question", "name": "Comment le stress influence-t-il la santé membranaire ?", "position": 15, "acceptedAnswer": { "@type": "Answer", "text": "Le stress chronique peut altérer la composition lipidique des membranes." } }, { "@type": "Question", "name": "Quels traitements ciblent les membranes cellulaires ?", "position": 16, "acceptedAnswer": { "@type": "Answer", "text": "Des médicaments comme les statines modifient la composition lipidique." } }, { "@type": "Question", "name": "Comment les lipides peuvent-ils être manipulés ?", "position": 17, "acceptedAnswer": { "@type": "Answer", "text": "Des techniques de nanomédecine utilisent des liposomes pour délivrer des médicaments." } }, { "@type": "Question", "name": "Quels suppléments peuvent améliorer la santé membranaire ?", "position": 18, "acceptedAnswer": { "@type": "Answer", "text": "Les acides gras oméga-3 sont bénéfiques pour la fluidité membranaire." } }, { "@type": "Question", "name": "Comment les antioxydants aident-ils les membranes ?", "position": 19, "acceptedAnswer": { "@type": "Answer", "text": "Ils protègent les membranes contre l'oxydation et le stress oxydatif." } }, { "@type": "Question", "name": "Quels traitements sont utilisés pour les maladies membranaires ?", "position": 20, "acceptedAnswer": { "@type": "Answer", "text": "Des thérapies géniques peuvent corriger des défauts dans les membranes." } }, { "@type": "Question", "name": "Quelles complications peuvent survenir avec des membranes altérées ?", "position": 21, "acceptedAnswer": { "@type": "Answer", "text": "Des maladies cardiovasculaires et métaboliques peuvent en résulter." } }, { "@type": "Question", "name": "Comment les membranes affectent-elles le cancer ?", "position": 22, "acceptedAnswer": { "@type": "Answer", "text": "Des modifications membranaires peuvent favoriser la progression tumorale." } }, { "@type": "Question", "name": "Quels troubles neurologiques sont liés aux membranes ?", "position": 23, "acceptedAnswer": { "@type": "Answer", "text": "Des maladies comme la sclérose en plaques sont associées à des anomalies membranaires." } }, { "@type": "Question", "name": "Comment les infections impactent-elles les membranes ?", "position": 24, "acceptedAnswer": { "@type": "Answer", "text": "Les agents pathogènes peuvent perturber l'intégrité des membranes cellulaires." } }, { "@type": "Question", "name": "Quelles sont les conséquences d'une défaillance membranaire ?", "position": 25, "acceptedAnswer": { "@type": "Answer", "text": "Une défaillance peut entraîner des troubles métaboliques graves et des inflammations." } }, { "@type": "Question", "name": "Quels facteurs génétiques influencent la santé membranaire ?", "position": 26, "acceptedAnswer": { "@type": "Answer", "text": "Des mutations dans les gènes liés aux lipides peuvent affecter la membrane." } }, { "@type": "Question", "name": "Comment l'alimentation impacte-t-elle les membranes ?", "position": 27, "acceptedAnswer": { "@type": "Answer", "text": "Une alimentation riche en graisses saturées peut altérer la fluidité membranaire." } }, { "@type": "Question", "name": "Quels comportements augmentent le risque de maladies membranaires ?", "position": 28, "acceptedAnswer": { "@type": "Answer", "text": "Le tabagisme et la sédentarité sont des comportements à risque." } }, { "@type": "Question", "name": "Comment l'âge affecte-t-il la santé des membranes ?", "position": 29, "acceptedAnswer": { "@type": "Answer", "text": "Le vieillissement peut entraîner une rigidité accrue des membranes cellulaires." } }, { "@type": "Question", "name": "Quels facteurs environnementaux sont des risques pour les membranes ?", "position": 30, "acceptedAnswer": { "@type": "Answer", "text": "L'exposition à des toxines et à des polluants peut endommager les membranes." } } ] } ] }

Sources (10000 au total)

A Carbon-Based Biosensing Platform for Simultaneously Measuring the Contraction and Electrophysiology of iPSC-Cardiomyocyte Monolayers.

Heart beating is triggered by the generation and propagation of action potentials through the myocardium, resulting in the synchronous contraction of cardiomyocytes. This process highlights the import...

Role of myocardial strain imaging in diagnosing inducible myocardial ischemia with treadmill contrast-enhanced stress echocardiography.

The aim of this study is to analyze the diagnostic value of global longitudinal strain (GLS) in detecting inducible myocardial ischemia in patients with chest pain undergoing treadmill contrast-enhanc... We retrospectively enrolled all patients who underwent invasive coronary angiography after treadmill contrast-enhanced SE. Rest and peak-stress myocardial GLS, segmental LS, and LS of 4-chamber (CH), ... In total 33 patients were included in the final analysis, among whom sixteen patients (48.4%) had significant coronary artery stenosis. Averaged GLS, 3-CH, and 4-CH LS were significantly lower in pati... Myocardial LS measured with treadmill contrast-enhanced stress echocardiography demonstrates potential value in identifying patients with inducible myocardial ischemia....

Ultrasound Visualization and Recording of Transient Myocardial Vibrations.

A new visualization and recording method used to assess and quantitate autogenic high-velocity motions in myocardial walls to provide a new description of cardiac function is described.... The regional motion display (RMD) is based on high-speed difference ultrasound B-mode images and spatiotemporal processing to record propagating events (PEs). Sixteen normal participants and one patie... In normal participants, RMDs revealed four discrete PEs with average onset timing with respect to the QRS complex of -31.7, +46, +365 and +536 ms. The late diastolic PE propagated apex to base in all ... The RMD method reliably reveals PEs as discrete events and successfully allows reproducible measurement of PE timing and the velocity of at least one PE. The RMD method is applicable to live, clinical...

Insights from an electro-mechanical heart failure cell model: Role of SERCA enhancement on arrhythmogenesis and myocyte contraction.

Structural and electrical remodeling in heart failure predisposes the heart to ventricular arrhythmias. Computer modeling approaches, used to complement experimental results, can provide a more mechan... We implemented characteristic remodeling of heart failure with reduced ejection fraction by including reported changes in ionic conductances, sarcomere function and cell structure (e.g. T-tubules disa... The population-based approach is crucial in robust identification of parameters at the core of abnormalities and in generalizing the outcome of their correction. As compared to non-failing ones, faili... These simulated results encourage the development of strategies comprising SERCA stimulation and highlight the need to evaluate both electrical and mechanical outcomes....

Myocardial strain is regulated by cardiac preload in the early stage of sepsis.

Owing to a lack of data, this study aimed to explore the effect of cardiac preload on myocardial strain in patients with sepsis.... A total of 70 patients with sepsis in intensive care unit (ICU) of a tertiary teaching hospital in China from January 2018 to July 2019 and underwent transthoracic echocardiography were enrolled. Echo... Thirty-seven patients (53%) had a low LVEDVI and 33 (47%) a normal LVEDVI. Those in the low LVEDVI group had a faster heart rate (121.7 vs. 95.3, p < 0.001) and required a greater degree of fluid infu... Myocardial strain alterations were significantly influenced by the cardiac preload during fluid resuscitation in sepsis....

Distinct methylome profile of cfDNA in AMI patients reveals significant alteration in cAMP signaling pathway genes regulating cardiac muscle contraction.

The role of epigenetics in cardiovascular diseases has paved the way for innovative therapeutic approaches. Investigating epigenetic changes using cell-free DNA (cfDNA) holds substantial promise beyon... We generated global methylome profiles of cfDNA and gDNA from 25 AMI patients using EM-Seq. Tissue deconvolution analysis was performed to estimate tissue specificity based on the methylation patterns... Comparative analysis of cfDNA and gDNA methylation patterns in AMI patients reveals cfDNA holds more significance than gDNA. Principal component analysis revealed distinct clusters for cfDNA and gDNA,... Epigenetic changes in cfDNA are more specific to cardiac tissue compared to those in gDNA, providing better insights into the molecular mechanisms involved in AMI. Genes that are differentially methyl...

Enhancing cardiomyocytes contraction force measuring in drug testing: Integration of a highly sensitive single-crystal silicon strain sensor into SU-8 cantilevers.

The development of efficient tools for predicting drug-induced cardiotoxicity in the preclinical phase would greatly benefit the drug development process. This study presents an SU-8 cantilever integr...