{"id":8989,"date":"2025-08-29T20:02:22","date_gmt":"2025-08-29T18:02:22","guid":{"rendered":"https:\/\/rvh-synergie.org\/actualites\/letude-revele-comment-un-additif-populaire-du-fentanyl-affecte-la-respiration-et-la-frequence-cardiaque\/"},"modified":"2025-08-29T20:02:25","modified_gmt":"2025-08-29T18:02:25","slug":"letude-revele-comment-un-additif-populaire-du-fentanyl-affecte-la-respiration-et-la-frequence-cardiaque","status":"publish","type":"post","link":"https:\/\/rvh-synergie.org\/actualites\/letude-revele-comment-un-additif-populaire-du-fentanyl-affecte-la-respiration-et-la-frequence-cardiaque\/","title":{"rendered":"L&rsquo;\u00e9tude r\u00e9v\u00e8le comment un additif populaire du fentanyl affecte la respiration et la fr\u00e9quence cardiaque"},"content":{"rendered":"<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/study-reveals-how-a-po.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2025\/study-reveals-how-a-po.jpg\" data-sub-html=\"Graphical abstract. Credit: &lt;i&gt;The Journal of Pharmacology and Experimental Therapeutics&lt;\/i&gt; (2025). DOI: 10.1016\/j.jpet.2025.103616\">\n<figure class=\"article-img\">\n<\/figure><\/div>\n<\/div>\n<p>Bien que l&#8217;emprise de l&rsquo;\u00e9pid\u00e9mie d&rsquo;opio\u00efdes se retire, gr\u00e2ce en partie \u00e0 de vastes efforts de sant\u00e9 publique et \u00e0 des m\u00e9dicaments de sauvetage comme Narcan, les d\u00e9c\u00e8s apr\u00e8s une surdose accidentelle menacent toujours ceux qui utilisent des opio\u00efdes synth\u00e9tiques comme le fentanyl. Le m\u00e9dicament est de plus en plus m\u00e9lang\u00e9 \u00e0 d&rsquo;autres substances puissantes, y compris les tranquillisants animaux tels que la xylazine, le rendant encore plus dangereux.<\/p>\n<p>Les \u00c9tats \u00e0 travers le pays, y compris le Michigan, voient une augmentation drastique des d\u00e9c\u00e8s impliqu\u00e9s par le xylazine, selon un rapport du Michigan Department of Health and Human Services.<\/p>\n<p>Cependant, on sait tr\u00e8s peu de choses sur la fa\u00e7on dont le s\u00e9datif, qui n&rsquo;est pas approuv\u00e9 pour l&rsquo;utilisation humaine et provoque de graves ulc\u00e8res cutan\u00e9s, affecte la respiration lorsqu&rsquo;il est m\u00e9lang\u00e9 avec du fentanyl.<\/p>\n<p>Une nouvelle \u00e9tude UM des laboratoires de John Traynor et Erica Levitt dans le Edward F. Domino Research Center d\u00e9couvre comment le fentanyl et la xylazine interagissent dans un mod\u00e8le de souris. L&rsquo;\u0153uvre est publi\u00e9e dans <i>Le Journal of Pharmacology and Experimental Therapeutics<\/i>.<\/p>\n<p>\u00ab\u00a0Nous n&rsquo;avons pas de donn\u00e9es claires quant \u00e0 savoir si la xylazine augmente le risque de surdose, nous avons donc besoin de tester ses effets physiologiques dans un mod\u00e8le animal\u00a0\u00bb, a d\u00e9clar\u00e9 Jess Anand, Ph.D., professeur adjoint de recherche de pharmacologie \u00e0 la UM Medical School et auteur de l&rsquo;\u00e9tude.<\/p>\n<p>En collaboration avec le premier auteur, l&rsquo;\u00e9tudiante dipl\u00f4m\u00e9e Catherine Demery, l&rsquo;\u00e9quipe a d\u00e9cid\u00e9 de tester son hypoth\u00e8se selon laquelle la xylazine aggraverait la diminution souvent du rythme respiratoire qui est caract\u00e9ristique de l&rsquo;utilisation du fentanyl.<\/p>\n<p>Des pauses induites par le fentanyl dans l&rsquo;inhalation, ou apneas, \u00e9taient en corr\u00e9lation avec une baisse des niveaux d&rsquo;oxyg\u00e8ne sanguin. Mais la xylazine n&rsquo;a pas amplifi\u00e9 dans quelle mesure le fentanyl a r\u00e9duit les niveaux d&rsquo;oxyg\u00e8ne.<\/p>\n<p>\u00ab\u00a0Ce que nous avons trouv\u00e9, c&rsquo;est que la d\u00e9pression du taux de respiration n&rsquo;est pas une amplification plus une.<\/p>\n<p>Cependant, ils ont constat\u00e9 que la xylazine r\u00e9duisait la fr\u00e9quence cardiaque plus que le fentanyl. Un moteur potentiellement plus important du risque accru de surdose est cette diminution de la fr\u00e9quence cardiaque caus\u00e9e par la xylazine, a d\u00e9clar\u00e9 DeMery.<\/p>\n<p>Heureusement, les m\u00e9dicaments d&rsquo;inversion de surdose tels que Narcan, qui fonctionnent en bloquant les r\u00e9cepteurs opio\u00efdes dans le cerveau, sont g\u00e9n\u00e9ralement suffisants pour surmonter une surdose caus\u00e9e par le fentanyl adult\u00e9r\u00e9 avec la xylazine, ils stressaient.<\/p>\n<p>Leurs id\u00e9es, disent que les auteurs, peuvent ouvrir d&rsquo;autres voies de recherche sur l&rsquo;utilisation de la polysubstance impliquant des opio\u00efdes.<\/p>\n<p>\u00ab\u00a0Il est essentiel de maintenir la recherche pour rythmer ce qui se passe dans la vie r\u00e9elle, sinon les personnes confront\u00e9es \u00e0 des probl\u00e8mes pourraient ne pas obtenir l&rsquo;aide dont ils ont besoin\u00a0\u00bb, a d\u00e9clar\u00e9 Anand.<\/p>\n<p>                                        <!-- print only --><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Bien que l&#8217;emprise de l&rsquo;\u00e9pid\u00e9mie d&rsquo;opio\u00efdes se retire, gr\u00e2ce en partie \u00e0 de vastes efforts<\/p>\n","protected":false},"author":1,"featured_media":8990,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[6473,1366,1638,182,328,4360,1346,1053,3475,157],"class_list":["post-8989","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-addictions","tag-additif","tag-affecte","tag-cardiaque","tag-comment","tag-fentanyl","tag-frequence","tag-letude","tag-populaire","tag-respiration","tag-revele","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - 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