{"id":1022,"date":"2023-12-22T14:06:48","date_gmt":"2023-12-22T13:06:48","guid":{"rendered":"https:\/\/radiovolume7.com\/?p=1022"},"modified":"2023-12-22T14:06:52","modified_gmt":"2023-12-22T13:06:52","slug":"des-scientifiques-chinois-fabriquent-un-vaccin-inhalable-en-poudre-seche-contre-la-covid-19","status":"publish","type":"post","link":"https:\/\/radiovolume7.com\/?p=1022","title":{"rendered":"Des scientifiques chinois fabriquent un vaccin inhalable en poudre s\u00e8che contre la COVID-19"},"content":{"rendered":"\n<p>Le vaccin est un produit \u00e0 dose unique qui peut \u00ab p\u00e9n\u00e9trer plus profond\u00e9ment et plus largement \u00bb dans le syst\u00e8me respiratoire.<\/p>\n\n\n\n<p><strong>Par\u00a0<a href=\"https:\/\/www.theepochtimes.com\/health\/chinese-scientists-make-inhalable-dry-powder-covid-19-vaccine-5548391\">Naveen Athrappull<\/a><a href=\"https:\/\/www.theepochtimes.com\/health\/chinese-scientists-make-inhalable-dry-powder-covid-19-vaccine-5548391\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">y<\/a><\/strong><\/p>\n\n\n\n<p>Des scientifiques chinois ont fabriqu\u00e9 un vaccin inhalable en a\u00e9rosol contre le COVID-19, qui, selon eux, offre une \u00ab protection efficace \u00bb contre l\u2019infection sur la base d\u2019essais sur des animaux.<\/p>\n\n\n\n<p>L\u2019&nbsp;<a href=\"https:\/\/www.nature.com\/articles\/s41586-023-06809-8\" target=\"_blank\" rel=\"noreferrer noopener\">\u00e9tude<\/a>&nbsp;, publi\u00e9e dans la revue Nature le 13 d\u00e9cembre, a impliqu\u00e9 des chercheurs testant \u00ab un vaccin inhalable, \u00e0 dose unique, en a\u00e9rosol de poudre s\u00e8che contre le SRAS-CoV-2 \u00bb qu\u2019ils ont d\u00e9velopp\u00e9.&nbsp;Le vaccin utilise des nanoparticules et contient des antig\u00e8nes du SRAS-CoV-2, ou des substances qui incitent le syst\u00e8me immunitaire \u00e0 g\u00e9n\u00e9rer des anticorps contre lui.&nbsp;Les chercheurs ont con\u00e7u le vaccin pour cibler plusieurs lign\u00e9es de COVID-19.&nbsp;Les particules avaient une taille de un \u00e0 quatre microm\u00e8tres, optimis\u00e9es pour \u00eatre d\u00e9pos\u00e9es dans la r\u00e9gion profonde des poumons.<\/p>\n\n\n\n<p>Il a \u00e9t\u00e9 constat\u00e9 que le vaccin induisait \u00ab une forte production d\u2019IgG et d\u2019IgA \u00bb, deux types d\u2019anticorps.&nbsp;Cela a \u00e9galement d\u00e9clench\u00e9 une r\u00e9ponse des lymphocytes T locaux, un type de globules blancs qui aident \u00e0 combattre les germes.&nbsp;Collectivement, cela conf\u00e8re une \u00ab protection efficace \u00bb contre le COVID-19 aux souris, aux hamsters et aux primates non humains.<\/p>\n\n\n\n<p>L&rsquo;\u00e9tude a not\u00e9 que m\u00eame si plusieurs produits d&rsquo;immunisation intranasale sont en cours de d\u00e9veloppement, beaucoup sont largement limit\u00e9s aux voies nasales.&nbsp;En revanche, les vaccins inhal\u00e9s en a\u00e9rosol, comme celui d\u00e9velopp\u00e9 par les chercheurs, \u00ab peuvent p\u00e9n\u00e9trer plus profond\u00e9ment et plus largement (dans les voies respiratoires principales et petites) \u00bb.&nbsp;Cela peut conf\u00e9rer les bienfaits du vaccin m\u00eame aux voies respiratoires inf\u00e9rieures.<\/p>\n\n\n\n<p>Le vaccin s\u2019est \u00e9galement montr\u00e9 prometteur pour \u00ab&nbsp;r\u00e9agir facilement&nbsp;\u00bb \u00e0 la future co-circulation de plusieurs souches de COVID-19 et pour pr\u00e9venir la transmission du variant Omicron, le variant dominant en circulation aux \u00c9tats-Unis.<\/p>\n\n\n\n<p>L\u2019\u00e9tude&nbsp;<a href=\"https:\/\/www.nature.com\/articles\/s41586-023-06809-8\" target=\"_blank\" rel=\"noreferrer noopener\">a not\u00e9<\/a>&nbsp;que la r\u00e9colte actuelle de vaccins contre le COVID-19 \u00e9tait administr\u00e9e par injections intramusculaires pour att\u00e9nuer l\u2019infection.&nbsp;Cependant, \u00ab les vaccins administr\u00e9s par voie intramusculaire n\u2019assurent pas une premi\u00e8re ligne de protection au niveau des voies respiratoires en raison de d\u00e9ficits en IgA et IgG s\u00e9cr\u00e9toires \u00bb.<\/p>\n\n\n\n<p>trois vaccinations par inhalation ou l\u2019utilisation d\u2019une vaccination de rappel h\u00e9t\u00e9rologue\u00bb.<\/p>\n\n\n\n<p>Ces limites ont \u00ab motiv\u00e9 \u00bb les chercheurs \u00e0 d\u00e9velopper \u00ab un vaccin en poudre s\u00e8che adapt\u00e9 \u00e0 l\u2019inhalation d\u2019une dose unique \u00bb.<\/p>\n\n\n\n<p>\u00ab\u00a0La vaccination inhalable r\u00e9pond \u00e0 un probl\u00e8me de sant\u00e9 publique connu, dans le sens o\u00f9 il y a plus d&rsquo;enthousiasme pour ce type d&rsquo;administration que pour l&rsquo;injection traditionnelle, et un sch\u00e9ma \u00e0 dose unique est favorable \u00e0 une augmentation substantielle de la proportion du total des personnes vaccin\u00e9es\u00a0\u00bb, indique l&rsquo;\u00e9tude. .<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">La Chine pousse la vaccination contre le COVID-19 |\u00a0Focus sur la Chine<a href=\"https:\/\/www.youtube.com\/@ChinainFocusNTD\"><\/a><\/h1>\n\n\n\n<figure class=\"wp-block-embed aligncenter is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"China Pushes COVID-19 Vaccinations | China In Focus\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/ewLPHvaCuNM?start=170&#038;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><figcaption class=\"wp-element-caption\"><br>Source vid\u00e9o <a href=\"https:\/\/youtu.be\/ewLPHvaCuNM?si=3-_XE060sYpDPYxd\">Focus sur la Chine &#8211; MTN<\/a> &#8211; La Chine fait une fois de plus pression pour la vaccination contre le COVID-19. Quelle est la principale variante \u00e0 l\u2019origine de l\u2019\u00e9pid\u00e9mie dans le pays ? Un ancien doctorant en chimie a \u00e9t\u00e9 accus\u00e9 d&rsquo;avoir empoisonn\u00e9 ses voisins, dont une petite fille. Les hommes politiques de longue date \u00e0 Hong Kong d\u00e9clarent qu&rsquo;ils se retirent des \u00e9lections dans la ville, tandis que certains \u00e9lecteurs d\u00e9clarent qu&rsquo;ils ne se rendront m\u00eame pas aux urnes. Pourquoi les candidats pro-d\u00e9mocratie sont-ils exclus de la course ? Un ancien pr\u00e9sident explique pourquoi les \u00c9tats-Unis et P\u00e9kin se concentrent sur le Pacifique et \u00e0 quoi ressemblent r\u00e9ellement les tentatives d\u2019influence chinoises.<\/figcaption><\/figure>\n\n\n\n<p>\u00ab En outre, la forme en poudre s\u00e8che du vaccin peut permettre de r\u00e9aliser des \u00e9conomies sur les co\u00fbts de stockage et de transport, ce qui pourrait potentiellement contribuer \u00e0 accro\u00eetre la couverture vaccinale dans les zones recul\u00e9es \u00bb, indique-t-il.<\/p>\n\n\n\n<p>De plus, le vaccin en poudre s\u00e8che utilise une microcapsule bas\u00e9e sur un mat\u00e9riau d\u00e9j\u00e0 approuv\u00e9 par la Food and Drug Administration (FDA) des \u00c9tats-Unis, renfor\u00e7ant ainsi les perspectives de \u00ab traduction clinique \u00bb du vaccin.<\/p>\n\n\n\n<p>\u00ab Nous envisageons que notre vaccin inhal\u00e9 pourrait servir de plateforme multivalente prometteuse pour lutter contre le COVID-19 et d\u2019autres maladies infectieuses respiratoires. \u00bb<\/p>\n\n\n\n<p>L&rsquo;\u00e9tude a re\u00e7u un financement de la Fondation nationale des sciences naturelles de Chine, de la Fondation des sciences naturelles de P\u00e9kin, du projet CAS pour les jeunes scientifiques en recherche fondamentale, du programme national de recherche et de d\u00e9veloppement de Chine, du programme de recherche strat\u00e9gique prioritaire de l&rsquo;Acad\u00e9mie chinoise des sciences, Fonds d&rsquo;innovation CAMS pour la science m\u00e9dicale et grands projets sp\u00e9ciaux scientifiques et technologiques de la province du Yunnan.<\/p>\n\n\n\n<p>Certains \u00ab int\u00e9r\u00eats concurrents \u00bb ont \u00e9t\u00e9 signal\u00e9s.&nbsp;Les auteurs Hengliang Wang et Li Zhu ont des demandes de brevet li\u00e9es aux nanoparticules de la sous-unit\u00e9 B de la toxine chol\u00e9rique (CTB) soumises par l&rsquo;Institut de biotechnologie de P\u00e9kin.&nbsp;Le vaccin en poudre s\u00e8che utilise le CTB avec les antig\u00e8nes du SRAS-CoV-2.<\/p>\n\n\n\n<p>L&rsquo;auteur Guanghui Ma est l&rsquo;&nbsp;<a href=\"https:\/\/www.nature.com\/articles\/s41586-023-06809-8\" target=\"_blank\" rel=\"noreferrer noopener\">inventeur<\/a>&nbsp;d&rsquo;une demande de brevet relative aux microcapsules poreuses soumise par l&rsquo;Institut de traitement et d&rsquo;ing\u00e9nierie.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00ab Un scandale aux proportions \u00e9piques \u00bb<\/h2>\n\n\n\n<p>Un&nbsp;<a href=\"https:\/\/www.nature.com\/articles\/d41586-023-03557-7\" target=\"_blank\" rel=\"noreferrer noopener\">article<\/a>&nbsp;du 13 d\u00e9cembre dans Nature, qui commentait l\u2019\u00e9tude, qualifie le vaccin en poudre s\u00e8che d\u2019\u00ab approche unique \u00bb pour lutter contre le COVID-19.&nbsp;Cependant, il note que \u00ab la s\u00e9curit\u00e9 et la puissance immunitaire du vaccin doivent encore \u00eatre test\u00e9es par des essais cliniques sur des humains \u00bb.<\/p>\n\n\n\n<p>Les chercheurs \u00ab ont montr\u00e9 que la poudre s\u00e8che reste stable \u00e0 temp\u00e9rature ambiante pendant au moins un mois, mais il sera essentiel de d\u00e9terminer combien de temps cette stabilit\u00e9 dure \u00e0 temp\u00e9rature ambiante et au-dessus, et comment la d\u00e9gradation du vaccin affecte la puissance immunitaire. \u00bb<\/p>\n\n\n\n<p>\u00ab\u00a0La question reste de savoir si ce vaccin en poudre s\u00e8che de 1 \u00e0 4 microm\u00e8tres (microm\u00e8tres) sera s\u00fbr et d\u00e9clenchera une r\u00e9ponse immunitaire lorsqu&rsquo;il est inhal\u00e9 par des personnes\u00a0\u00bb, a-t-il d\u00e9clar\u00e9, tout en soulevant des inqui\u00e9tudes concernant une potentielle \u00ab\u00a0inflammation ind\u00e9sirable\u00a0\u00bb.<\/p>\n\n\n\n<p>Concernant l&rsquo;efficacit\u00e9 du vaccin en poudre s\u00e8che contre les variantes \u00e9mergentes du COVID-19, l&rsquo;article note que l&rsquo;\u00e9tude a d\u00e9montr\u00e9 la faisabilit\u00e9 d&rsquo;inclure les antig\u00e8nes de pointe de plusieurs virus variants du COVID-19 dans le vaccin.&nbsp;Cependant, l&rsquo;efficacit\u00e9 protectrice du vaccin \u00ab n&rsquo;a pas \u00e9t\u00e9 \u00e9valu\u00e9e \u00bb, pr\u00e9cise-t-on.<\/p>\n\n\n\n<p>En outre, \u00ab&nbsp;la mise \u00e0 jour fr\u00e9quente de l\u2019antig\u00e8ne de pointe dans les vaccins pourrait ne pas \u00eatre une solution viable \u00e0 l\u2019\u00e9mergence de nouvelles souches, car le SRAS-CoV-2 \u00e9volue rapidement et \u00e9chappe ainsi au ciblage par les anticorps.&nbsp;\u00bb<\/p>\n\n\n\n<p>L\u2019article a aliment\u00e9 la controverse en raison d\u2019une d\u00e9claration selon laquelle \u00ab les vaccins inject\u00e9s par voie intramusculaire ne peuvent pas induire d\u2019immunit\u00e9 dans les tissus muqueux des voies respiratoires, qui sont le site d\u2019entr\u00e9e du SRAS-CoV-2 \u00bb.<\/p>\n\n\n\n<p>\u00ab Il y a un scandale aux proportions \u00e9piques qui se pr\u00e9pare ici.&nbsp;Une nouvelle \u00e9tude parue dans Nature affirme d\u00e9sormais que les \u00ab vaccins \u00bb \u00e0 ARNm n\u2019ont, de par leur nature m\u00eame, jamais pu arr\u00eater la propagation.&nbsp;Impossible en th\u00e9orie et en pratique.&nbsp;Pourtant, c\u2019est l\u2019excuse utilis\u00e9e pour forcer tout le monde \u00e0 se faire injecter ce produit \u00bb,&nbsp;<a href=\"https:\/\/twitter.com\/HansMahncke\/status\/1735063309592780922\" target=\"_blank\" rel=\"noreferrer noopener\">a d\u00e9clar\u00e9<\/a>&nbsp;l\u2019auteur juridique Hans Mahncke dans un article X du 14 d\u00e9cembre.<\/p>\n\n\n\n<p>\u00abJe l&rsquo;ai signal\u00e9 il y a des ann\u00e9es.&nbsp;Le m\u00e9canisme par lequel les prot\u00e9ines de pointe fonctionnent n\u2019inocule pas la muqueuse \u00e9pith\u00e9liale contre l\u2019infection.&nbsp;Ainsi, il peut toujours se propager par les \u00e9ternuements et la toux.&nbsp;La nature arrive un peu en retard \u00e0 la f\u00eate \u00bb,&nbsp;<a href=\"https:\/\/twitter.com\/kylenabecker\/status\/1735391831792259441\" target=\"_blank\" rel=\"noreferrer noopener\">a d\u00e9clar\u00e9<\/a>&nbsp;l&rsquo;animateur du podcast Kyle Becker dans un article du 15 d\u00e9cembre sur X.<\/p>\n\n\n\n<p>\u00ab Les vaccins intramusculaires ne peuvent pas induire une immunit\u00e9 muqueuse dans les voies respiratoires (le site d\u2019entr\u00e9e du SRAS2).&nbsp;C\u2019est pourquoi ils n\u2019ont pas stopp\u00e9 la propagation du Covid.&nbsp;Ni faire grand-chose pour emp\u00eacher Longcovid.&nbsp;Alors mettons cette fable de c\u00f4t\u00e9 et concentrons-nous d\u00e9j\u00e0 sur le blocage des infections \u00bb,&nbsp;<a href=\"https:\/\/twitter.com\/danaparish\/status\/1735051028267938040\" target=\"_blank\" rel=\"noreferrer noopener\">a d\u00e9clar\u00e9<\/a>&nbsp;l&rsquo;auteur Dana Parish dans un article X.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Source : <a href=\"https:\/\/www.theepochtimes.com\/health\/chinese-scientists-make-inhalable-dry-powder-covid-19-vaccine-5548391\">The Epoch Time<\/a><a href=\"https:\/\/www.theepochtimes.com\/health\/chinese-scientists-make-inhalable-dry-powder-covid-19-vaccine-5548391\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">s<\/a><\/p>\n\n\n\n<p>Traduite par <a href=\"https:\/\/radiovolume7.com\/\">RV7 NEWS<\/a><\/p>\n\n\n<div class=\"wp-block-post-author\"><div class=\"wp-block-post-author__avatar\"><img  title=\"\"  alt=\"7c5e5078f8861520ef3df1ccf8400814a2675ee2e617efab58921c4972166788?s=48&#038;d=mm&#038;r=g Des scientifiques chinois fabriquent un vaccin inhalable en poudre s\u00e8che contre la COVID-19\" alt='' src='https:\/\/secure.gravatar.com\/avatar\/7c5e5078f8861520ef3df1ccf8400814a2675ee2e617efab58921c4972166788?s=48&#038;d=mm&#038;r=g' srcset='https:\/\/secure.gravatar.com\/avatar\/7c5e5078f8861520ef3df1ccf8400814a2675ee2e617efab58921c4972166788?s=96&#038;d=mm&#038;r=g 2x' 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https:\/\/radiovolume7.com\/wp-content\/uploads\/2023\/10\/CSAPE2-300x76.jpg 300w, https:\/\/radiovolume7.com\/wp-content\/uploads\/2023\/10\/CSAPE2-768x195.jpg 768w, https:\/\/radiovolume7.com\/wp-content\/uploads\/2023\/10\/CSAPE2.jpg 1179w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption class=\"wp-element-caption\"><a href=\"http:\/\/csape.international\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">ANTI CORRUPTION COLLECTIF SYNDICATS ET ASSOCIATIONS PROFESSIONNELS EUROPEENS <\/a><\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Le vaccin est un produit \u00e0 dose unique qui peut \u00ab p\u00e9n\u00e9trer plus profond\u00e9ment et plus largement \u00bb dans le syst\u00e8me respiratoire. Par\u00a0Naveen Athrappully Des scientifiques chinois ont fabriqu\u00e9 un vaccin inhalable en a\u00e9rosol contre le COVID-19, qui, selon eux, offre une \u00ab protection efficace \u00bb contre l\u2019infection sur la base d\u2019essais sur des animaux. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1023,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[12,2,3],"tags":[],"class_list":["post-1022","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-internationale","category-sante","category-societe"],"featured_image_src":"https:\/\/radiovolume7.com\/wp-content\/uploads\/2023\/12\/005522686-001o-GettyImages-1234838695-4557.webp","author_info":{"display_name":"RV7","author_link":"https:\/\/radiovolume7.com\/?author=1"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Des scientifiques chinois fabriquent un vaccin inhalable en poudre s\u00e8che contre la COVID-19 - RADIO VOLUME 7<\/title>\n<meta name=\"description\" content=\"Le vaccin est un produit \u00e0 dose unique 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