Investigation dans les capsules Nixmetilagon basée sur la voie RHOA / ROCK1 dans les capsules Nixmetilagon inhibent les mécanismes de contraction cellulaire périvasculaires dans une lésion cérébrale induite par une ischémie chez les rats.

  • role: First author第一作者
  • Affiliation:

    School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China

  • Email:wenyinlian11@bucm.edu.cn
  • Introduction:文胤琏,在读硕士,从事脑缺血机制及中药干预研究,E-mail:wenyinlian11@bucm.edu.cn
WEN Yinlian,  
  • Affiliation:

    School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China

SHANG Jinfeng,  
  • Affiliation:

    School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China

WANG Bohong,  
  • Affiliation:

    School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China

WEI Wanting,  
  • Affiliation:

    School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China

ZHANG Xiaolu,  
  • Affiliation:

    School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China

HUANG Guijinfeng,  
  • role: Corresponding author通信作者
  • Affiliation:

    School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, China

  • Email:liuxin1011@bucm.edu.cn
  • Introduction:刘欣,博士,教授,从事脑缺血机制及中药干预研究,E-mail:liuxin1011@bucm.edu.cn
LIU Xin*

résumé

L'objectif de cette étude était d'explorer le mécanisme d'action des capsules Nixmetilagon sur le mécanisme de contraction des cellules périvasculaires dans le cadre d'une lésion cérébrale induite par une ischémie chez le rat en modulant la voie du membre apparenté à Ras A (RHOA) / kinazase 1 associée à la protéine rock croissante (ROCK1). Méthode: 90 rats ont été divisés en deux groupes: groupe de fausse opération, groupe de modélisation, groupe d'extrait de fruits de Ginkgo biloba (21,6 mg / kg -1), groupe de capsules Nixmetilagon à faibles, moyennes et fortes doses (55, 110, 220 mg / kg -1), 15 rats dans chaque groupe, sauf groupe de fausse opération, subi une occlusion temporaire de l'artère cérébrale moyenne (tMCAO) . La fonction nerveuse des rats a été évaluée, le flux sanguin cérébral mesuré par imagerie par diffusion laser, par tétrazolium (TTC) et coloration par hématoxyline-éosine (HE) et coloration de Nial's , et observations subséquentes de modifications pathologiques par microscopie électronique pour analyse de la forme des cellules de la cortex cérébral, la coloration Evan's Blue pour vérifier la barrière hématoencéphalique, les tests de boîte pour mesurer les taux d'albumine, l'albumine modifiée par l'ischémie, examen en temps réel de la réaction en chaîne de la polymérase (PCR en temps réel) et western blot pour mesurer RM pour RHOA, ROCK1, récepteur associé au facteur de croissance des plaquettes (PDGFRB) et protéine musculaire lisse α- (α-SMA), protéines de jonction cellulaire -1 (ZO-1) et métalloprotéinases-2 (MMP-2) et métalloprotéinases-9 (MMP-9) et niveaux d'expression de protéines. Résultats: Comparativement au groupe de fausse opération, dans le groupe de modélisation, la fonction nerveuse des rats diminue, le pourcentage de diminution du flux sanguin cérébral, le pourcentage d'AVC augmente (P <0,01), les neurones du cortex cérébral se contractent avec un œdème, le nombre de niaux diminue, la surface des cellules périvasculaires diminue, la teneur en albumine dans le cortex augmente (P <0,05), l'albumine niveau du procès (P <0,01). Conclusion: Les capsules Nixmetilagon peuvent restaurer le flux sanguin chez les rats présentant des lésions cérébrales ischémiques, réduire les troubles de la microcirculation, protéger la barrière hématoencéphalique, et leur mécanisme d'action peut être lié à l'inhibition du membre de la route / route 1, et réduisant les pertes de périphérisation cellulaire.

mots-clés

Capsules Nixmetilagon ; lésion cérébrale induite par une ischémie ; contraction des cellules périvasculaires ; voie membre apparenté à Ras A (RHOA) / protéine rock croissante 1 (ROCK1); Mécanisme pharmacologique

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