{"id":250,"date":"2026-07-21T09:00:00","date_gmt":"2026-07-21T13:00:00","guid":{"rendered":"https:\/\/browsepeptides.com\/cjc-1295-no-dac-ipamorelin-research-guide\/"},"modified":"2026-09-15T12:43:41","modified_gmt":"2026-09-15T16:43:41","slug":"guide-de-recherche-cjc-1295-sans-dac-ipamorelin","status":"publish","type":"post","link":"https:\/\/browsepeptides.com\/fr\/cjc-1295-no-dac-ipamorelin-research-guide\/","title":{"rendered":"CJC-1295 (sans DAC) + Ipamorelin : m\u00e9canisme d'exposition combin\u00e9e et r\u00e9f\u00e9rence de recherche"},"content":{"rendered":"

R\u00e9ponse rapide :<\/strong> Le CJC-1295 sans DAC est un analogue de la GHRH et l'ipamorelin est un agoniste s\u00e9lectif du r\u00e9cepteur GHS-R. Dans la recherche pr\u00e9clinique, ils sont \u00e9tudi\u00e9s ensemble parce qu'ils agissent sur deux r\u00e9cepteurs diff\u00e9rents des m\u00eames cellules hypophysaires, ce qui explique pourquoi une exposition combin\u00e9e produit une r\u00e9ponse en hormone de croissance plus importante et plus pulsatile dans les mod\u00e8les de laboratoire que l'un ou l'autre pris seul.<\/p>\n

Deux compos\u00e9s, deux r\u00e9cepteurs<\/h2>\n

CJC-1295 (sans DAC)<\/strong> est un analogue modifi\u00e9 de 29 acides amin\u00e9s de l'hormone de lib\u00e9ration de l'hormone de croissance (GHRH). Quatre substitutions d'acides amin\u00e9s le rendent plus r\u00e9sistant au clivage enzymatique que la GHRH native. Sans la modification du complexe d'affinit\u00e9 pour les m\u00e9dicaments (DAC), il ne se lie pas \u00e0 l'albumine, de sorte que son activit\u00e9 dans la litt\u00e9rature est de courte dur\u00e9e et pulsatile plut\u00f4t que soutenue.<\/p>\n

Ipamorelin<\/strong> est un pentapeptide de la famille des peptides lib\u00e9rateurs de l'hormone de croissance (agonistes du GHS-R). Il agit sur le r\u00e9cepteur de la ghr\u00e9line (GHS-R1a). Lors des travaux de caract\u00e9risation initiaux, il a \u00e9t\u00e9 remarqu\u00e9 pour sa s\u00e9lectivit\u00e9 : il stimulait la lib\u00e9ration de l'hormone de croissance chez les mod\u00e8les animaux sans effets significatifs sur le cortisol ou la prolactine, ce qui le distinguait des agonistes du GHS-R pr\u00e9c\u00e9dents.<\/p>\n

Pourquoi ils sont \u00e9tudi\u00e9s ensemble<\/h2>\n

L'activation du r\u00e9cepteur de la GHRH et celle du r\u00e9cepteur de la ghr\u00e9line convergent vers les m\u00eames cellules somatotropes par le biais de voies de second messager diff\u00e9rentes (l'AMPc pour la GHRH, le calcium et la PKC pour le GHS-R1a). Des travaux pr\u00e9cliniques men\u00e9s sur des analogues de la GHRH et des agonistes du GHS-R ont d\u00e9montr\u00e9 de mani\u00e8re r\u00e9p\u00e9t\u00e9e une lib\u00e9ration synergique plut\u00f4t qu'additive, la combinaison pr\u00e9servant le profil pulsatile naturel. Ce profil a de l'importance en recherche car une exposition continue, non pulsatile, produit une signalisation aval diff\u00e9rente.<\/p>\n

Ce que couvre la litt\u00e9rature<\/h2>\n
    \n
  • Pharmacologie des r\u00e9cepteurs et \u00e9tudes de liaison de chaque peptide s\u00e9par\u00e9ment.<\/li>\n
  • Mod\u00e8les animaux et cellulaires mesurant la s\u00e9cr\u00e9tion d'hormone de croissance en r\u00e9ponse \u00e0 une exposition combin\u00e9e.<\/li>\n
  • Comparaisons de la stabilit\u00e9 et de la demi-vie entre les formes de CJC-1295 avec DAC et sans DAC.<\/li>\n<\/ul>\n

    Notes de manipulation pour la paillasse<\/h2>\n

    Les deux peptides sont fournis lyophilis\u00e9s. Reconstituez avec de l'eau bact\u00e9riostatique, r\u00e9frig\u00e9rez et r\u00e9partissez en aliquotes pour toute conservation d\u00e9passant quelques jours. \u00c9tant donn\u00e9 que les deux compos\u00e9s sont g\u00e9n\u00e9ralement reconstitu\u00e9s s\u00e9par\u00e9ment et combin\u00e9s au moment de l'utilisation dans les protocoles publi\u00e9s, la tenue de registres de stocks s\u00e9par\u00e9s \u00e9vite les erreurs de concentration. Notre calculateur de peptides s'occupe des calculs de concentration.<\/p>\n

    Sources<\/h2>\n
      \n
    • Teichman SL et al. Prolonged stimulation of growth hormone and IGF-I secretion by CJC-1295, a long-acting analog of GH-releasing hormone. Journal of Clinical Endocrinology and Metabolism, 2006.<\/li>\n
    • Raun K et al. Ipamorelin, the first selective growth hormone secretagogue. European Journal of Endocrinology, 1998.<\/li>\n
    • Bowers CY. GH releasing peptides: structure and kinetics. Journal of Pediatric Endocrinology, 1993.<\/li>\n<\/ul>\n

      Tous les produits Browse Peptides sont fournis pour la recherche en laboratoire uniquement et ne sont pas destin\u00e9s \u00e0 un usage humain ou v\u00e9t\u00e9rinaire. Cet article r\u00e9sume la litt\u00e9rature publi\u00e9e \u00e0 des fins de r\u00e9f\u00e9rence pour la recherche et ne constitue pas un avis m\u00e9dical, un protocole ou une recommandation d'aucune sorte.<\/p>","protected":false},"excerpt":{"rendered":"

      Quick answer: CJC-1295 without DAC is a GHRH analog and ipamorelin is a selective GHS-R agonist. In preclinical research they are studied together because they act on two different receptors on the same pituitary cells, which is why combined exposure produces a larger, more pulsatile growth-hormone response in laboratory models than either alone.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[34],"tags":[],"class_list":["post-250","post","type-post","status-publish","format-standard","hentry","category-research-education"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t