{"id":9125,"date":"2025-09-05T03:57:00","date_gmt":"2025-09-05T01:57:00","guid":{"rendered":"https:\/\/rvh-synergie.org\/actualites\/letude-revele-que-lexposition-au-cannabis-prenatal-retard-le-developpement-de-la-reproduction-chez-la-progeniture-feminine\/"},"modified":"2025-09-05T03:57:01","modified_gmt":"2025-09-05T01:57:01","slug":"letude-revele-que-lexposition-au-cannabis-prenatal-retard-le-developpement-de-la-reproduction-chez-la-progeniture-feminine","status":"publish","type":"post","link":"https:\/\/rvh-synergie.org\/actualites\/letude-revele-que-lexposition-au-cannabis-prenatal-retard-le-developpement-de-la-reproduction-chez-la-progeniture-feminine\/","title":{"rendered":"L&rsquo;\u00e9tude r\u00e9v\u00e8le que l&rsquo;exposition au cannabis pr\u00e9natal retard le d\u00e9veloppement de la reproduction chez la prog\u00e9niture f\u00e9minine"},"content":{"rendered":"<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2025\/study-finds-prenatal-c.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2025\/study-finds-prenatal-c.jpg\" data-sub-html=\"Kanako Hayashi, a professor in the WSU College of Veterinary Medicine\u2019s Center for Reproductive Biology, led a new study that shows prenatal cannabis use may disrupt and slow the reproductive development of offspring. Credit: Ted\u00a0S. Warren, College of Veterinary Medicine\">\n<figure class=\"article-img\">\n<\/figure><\/div>\n<\/div>\n<p>La consommation de cannabis par les m\u00e8res pendant la grossesse et que les soins infirmiers peuvent perturber et ralentir le d\u00e9veloppement reproducteur de leurs filles et m\u00eame de petites-filles, sugg\u00e8re une nouvelle \u00e9tude de l&rsquo;Universit\u00e9 de l&rsquo;\u00c9tat de Washington.<\/p>\n<p>La recherche, publi\u00e9e dans la revue <i>Sciences toxicologiques<\/i>a trouv\u00e9 des souris femelles expos\u00e9es au cannabis pendant que la grossesse et l&rsquo;allaitement ont donn\u00e9 naissance \u00e0 une prog\u00e9niture plus petite qui a connu une pubert\u00e9 retard\u00e9e et des cycles reproductifs irr\u00e9guliers. Les effets les plus forts sont apparus dans la premi\u00e8re g\u00e9n\u00e9ration, avec des signes diminuant dans les g\u00e9n\u00e9rations ult\u00e9rieures.<\/p>\n<p>\u00ab\u00a0Notre \u00e9tude a \u00e9t\u00e9 sp\u00e9cifiquement con\u00e7ue pour mieux comprendre les cons\u00e9quences \u00e0 long terme de la consommation de cannabis par les m\u00e8res enceintes et infirmi\u00e8res en fonction de la reproduction et comment elle pourrait affecter les g\u00e9n\u00e9rations suivantes\u00a0\u00bb, a d\u00e9clar\u00e9 Kanako Hayashi, professeur au WSU College of Veterinary Medicine Center for Reproductive Biology qui a men\u00e9 l&rsquo;\u00e9tude. \u00ab\u00a0Alors que de nombreuses personnes pensent que le cannabis est s\u00fbr \u00e0 utiliser pendant la grossesse ou les soins infirmiers, nos donn\u00e9es et autres \u00e9tudes sugg\u00e8rent le contraire.\u00a0\u00bb<\/p>\n<p>Le cannabis, qui est d\u00e9sormais l\u00e9gal dans 24 \u00c9tats et Washington, DC, est le m\u00e9dicament r\u00e9cr\u00e9atif les plus utilis\u00e9s aux \u00c9tats-Unis, avec plus de 48 millions de personnes ayant d\u00e9clar\u00e9 une utilisation au cours de la derni\u00e8re ann\u00e9e.<\/p>\n<p>Le Coll\u00e8ge am\u00e9ricain des obst\u00e9triciens et des gyn\u00e9cologues conseille la consommation de cannabis pendant la grossesse et l&rsquo;allaitement maternel, citant des liens avec un faible poids \u00e0 la naissance, un d\u00e9veloppement du cerveau alt\u00e9r\u00e9 et d&rsquo;autres risques, mais les enqu\u00eates nationales montrent que l&rsquo;utilisation a augment\u00e9 chez les personnes enceintes ces derni\u00e8res ann\u00e9es, pivotant jusqu&rsquo;\u00e0 25% pendant la pand\u00e9mie Covid-19. Selon une \u00e9tude publi\u00e9e dans l&rsquo;American American Journal of Americabis, les produits du cannabis ne pr\u00e9sentent pas un risque peu ou pas de risque, m\u00eame si les produits de cannabis sont devenus plus puissants.<\/p>\n<p>Pour refl\u00e9ter l&rsquo;utilisation humaine, Hayashi et son \u00e9quipe ont expos\u00e9 des souris f\u00e9minines \u00e0 l&rsquo;extrait de cannabis vaporis\u00e9 deux fois par jour depuis le d\u00e9but de la grossesse jusqu&rsquo;\u00e0 ce que leur prog\u00e9niture soit sevr\u00e9e \u00e0 21 jours. Ils ont ensuite suivi les r\u00e9sultats sur trois g\u00e9n\u00e9rations.<\/p>\n<p>Les chercheurs ont constat\u00e9 que l&rsquo;exposition au cannabis n&rsquo;avait aucun effet sur les grossesses des m\u00e8res, car la longueur gestationnelle, la taille de la liti\u00e8re et les taux de survie \u00e9taient tous normaux. Les port\u00e9es de premi\u00e8re g\u00e9n\u00e9ration, qui ont \u00e9t\u00e9 directement expos\u00e9es dans l&rsquo;ut\u00e9rus et pendant les soins infirmiers, sont n\u00e9e plus petites, ont atteint la pubert\u00e9 plus tard et ont connu des cycles de reproduction perturb\u00e9s. Bien qu&rsquo;ils aient finalement atteint une taille normale en tant qu&rsquo;adultes, leurs premiers retards \u00e9taient des signes clairs de d\u00e9veloppement perturb\u00e9.<\/p>\n<p>Les effets \u00e9taient beaucoup plus doux pour les femmes de deuxi\u00e8me g\u00e9n\u00e9ration, qui \u00e9taient des filles des premi\u00e8res port\u00e9es. Cette g\u00e9n\u00e9ration avait encore des cycles irr\u00e9guliers, avec des cycles moins et plus longs que la normale, mais ils \u00e9taient par ailleurs sains et capables de tomber enceintes, de porter des port\u00e9es et d&rsquo;accoucher sans probl\u00e8mes.<\/p>\n<p>\u00c0 la troisi\u00e8me g\u00e9n\u00e9ration, les diff\u00e9rences avaient disparu. Les femelles ont grandi et se sont d\u00e9velopp\u00e9es normalement, avaient des cycles r\u00e9guliers et n&rsquo;ont montr\u00e9 aucun probl\u00e8me de reproduction par rapport au groupe t\u00e9moin.<\/p>\n<p>\u00ab\u00a0Notre conclusion est que l&rsquo;exposition pr\u00e9natale au cannabis affecte directement le d\u00e9veloppement pr\u00e9coce\u00a0\u00bb, a d\u00e9clar\u00e9 Hayashi. \u00abCes effets sont clairs dans la premi\u00e8re g\u00e9n\u00e9ration mais deviennent limit\u00e9s et beaucoup moins graves dans les g\u00e9n\u00e9rations ult\u00e9rieures.<\/p>\n<p>\u00ab\u00a0Le cannabis peut rendre les gens d\u00e9tendus et soulager le stress, c&rsquo;est pourquoi certains peuvent l&rsquo;utiliser pendant la grossesse ou les soins infirmiers\u00a0\u00bb, a-t-elle poursuivi, \u00ab\u00a0mais il est important de consid\u00e9rer comment ces choix peuvent affecter les enfants et m\u00eame les petits-enfants.\u00a0\u00bb<\/p>\n<p>L&rsquo;\u00e9tude n&rsquo;a r\u00e9v\u00e9l\u00e9 aucune preuve que l&rsquo;exposition au cannabis pendant la grossesse induit une naissance pr\u00e9matur\u00e9e ou une mortinaissance, bien que Hayashi ait not\u00e9 que certaines femmes qui consomment du cannabis pendant la grossesse peuvent \u00eatre plus susceptibles de prendre d&rsquo;autres substances.<\/p>\n<p>\u00ab\u00a0Dans cette \u00e9tude, nous n&rsquo;avons examin\u00e9 que l&rsquo;exposition au cannabis, mais la situation r\u00e9aliste est les femmes enceintes qui prennent du cannabis, certaines boivent probablement et fument. Certaines pourraient prendre de la coca\u00efne et d&rsquo;autres m\u00e9dicaments\u00a0\u00bb, a d\u00e9clar\u00e9 Hayashi, \u00ab\u00a0et nous ne savons pas encore comment ces combinaisons pourraient affecter le d\u00e9veloppement reproducteur.\u00a0\u00bb<\/p>\n<p>Le laboratoire de Hayashi \u00e9tudie maintenant comment l&rsquo;exposition au cannabis influence la fertilit\u00e9 masculine et le d\u00e9veloppement de la reproduction. Les premiers r\u00e9sultats sugg\u00e8rent que la prog\u00e9niture m\u00e2le peut ressentir des effets reproductifs plus graves.<\/p>\n<p>                                        <!-- print only --><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>La consommation de cannabis par les m\u00e8res pendant la grossesse et que les soins infirmiers<\/p>\n","protected":false},"author":1,"featured_media":9126,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[392,56,653,4407,1346,219,6524,2495,5328,6525,157],"class_list":["post-9125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-addictions","tag-cannabis","tag-chez","tag-developpement","tag-feminine","tag-letude","tag-lexposition","tag-prenatal","tag-progeniture","tag-reproduction","tag-retard","tag-revele","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.4 - 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