中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (20): 3130-3135.doi: 10.3969/j.issn.2095-4344.0293

• 血管组织构建 vascular tissue construction • 上一篇    下一篇

人胚静脉窦与心背侧间充质突的形成与重塑

杨艳萍,李海荣,曹锡梅,景  雅,崔慧林,张  涛   

  1. 山西医科大学组织胚胎学教研室,山西省太原市  030001
  • 收稿日期:2018-04-11 出版日期:2018-07-18 发布日期:2018-07-18
  • 通讯作者: 通讯作者:景雅,博士,教授,山西医科大学组织胚胎学教研室,山西省太原市 030001
  • 作者简介:杨艳萍,女,1976年生,汉族,山西省稷山县人,2009年山西医科大学毕业,博士,副教授,主要从事胚胎心脏发育的研究。
  • 基金资助:

    国家自然科学基金(31200899)

Formation and remodeling of the sinus venosus and the dorsal mesenchymal protrusion in human embryo

Yang Yan-ping, Li Hai-rong, Cao Xi-mei, Jing Ya, Cui Hui-lin, Zhang Tao   

  1. Department of Histology and Embryology, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • Received:2018-04-11 Online:2018-07-18 Published:2018-07-18
  • Contact: Jing Ya, Ph.D., Professor, Department of Histology and Embryology, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • About author:Yang Yan-ping, M.D., Associate professor, Department of Histology and Embryology, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 31200899

摘要:

文章快速阅读:

文题释义:
心背侧间充质突(dorsal mesenchymal protrusion,DMP):是前肠腹侧与心背系膜之间的间充质细胞向心房背侧壁迁移形成的楔状突起。研究显示有的房室隔缺损病例房室管心内膜垫、原发隔形态正常,而心背侧间充质突体积较小,导致心房原发孔不能正常闭合。由此说明在小鼠胚胎、人胚,DMP对心房分隔具有重要作用。
第二生心区(second heart field,SHF):分布于前肠腹侧间充质、心包腔背侧壁的脏壁中胚层等部位,其作用在于参与形成心房大部、右心室和流出道心肌、主、肺动脉壁的部分平滑肌等,其发育异常可导致永存动脉干等先天性心脏畸形的发生。
摘要
背景:
有关人胚心脏静脉窦的形成与重塑以及心背侧间充质突的功能尚存在争议。
目的:探讨人胚心房分隔过程中心背侧间充质突的确切功能以及静脉窦的形成与转归。
方法:收集的人胚胎立即固定24 h后,体视显微镜下依据Carnegie分期法进行分期,分为Carnegie stage 10(CS10)-CS17。对人胚心脏切片进行免疫组织化学染色。
结果与结论:①CS10-CS12,胚胎原始咽腹侧间充质与心包背侧壁的isl1阳性细胞延续至静脉窦壁参与其心肌形成;②自CS13始,冠状窦和腔静脉壁开始表达isl1,并逐渐有心肌细胞形成。同时,isl1阳性细胞参与心背侧间充质突形成;③CS15,心背侧间充质突参与心房分隔并逐渐心肌化;④结果表明,人胚静脉窦以及冠状窦、腔静脉壁的心肌来自于第二生心区的isl1阳性细胞的分化;人胚心背侧间充质突的形成与功能与小鼠胚胎的相似。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0003-4134-4427(杨艳萍)

关键词: 静脉窦, 心背侧间充质突, 人胚心脏, 免疫组织化学, 组织构建

Abstract:

BACKGROUND: Formation and remodeling of sinus venosus and the function of the dorsal mesenchymal protrusion (DMP) in human embryonic heart remain controversial.
OBJECTIVE: To explore the function of DMP and the sinus venosus development in the process of human embryo atrial separation.
METHODS: The human embryos were fixed for 24 hours immediately after harvesting, followed by staged based on Carnegie stage (CS10-CS17) under stereo microscope. Serial sections of human embryos were stained immunohistochemically.
RESULTS AND CONCLUSION: During CS10-CS12, the isl1 positive cells of the pharyngeal ventral mesenchyme and the dorsal pericardial wall extended to the sinus venosus wall to contribute to myocardium formation. From CS13, isl1 began to express in the coronary sinus and the caval vein wall and these blood vessels began to be myocardialized. Meanwhile, the isl1 positive cells participated in the formation of DMP.At CS15, the DMP contributed to the atrial separation and was myocardialized gradually. These data suggest that in human embryo, the sinus venosus is formed and the myocardium of the venous tributaries is derived from the isl1 positive cells of second heart field. The formation and function of the DMP in human embryo are similar to those of the mouse embryo.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Venae Cavae, Coronary Sinus, Stromal Cells, Immunohistochemistry, Tissue Engineering

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