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大鼠右心耳肌细胞特殊颗粒的超微结构研究 被引量:4

Ultrastructural Study of the specific Granules in Right Atrial Appendage Cardiocytes in the Rat
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摘要 通过透射电镜研究大鼠右心耳肌细胞特殊颗粒的超微结构。结果观察到在内质网和高尔基复合体的囊腔内存在颗粒或其致密物质。特殊颗粒(SG)可分为A、B二型,A型颗粒多见,含电子致密颗粒核心;B型少见,为一均匀浅淡的纤维状核心。SG界膜与肌膜紧密接触、融合、裂口释放的胞吐现象。这种现象在横管系统偶被观察到。有些SG界膜部分溶解或完全溶解,形成一种无包膜的电子致密颗粒。本文研究结果为SG的产生与分型、心钠素的多种释放方式提供了某些新的形态学资料。 The transmission electron microscopy was used to study the ultrastructure of the specific granules of right atrial appendage cardiocytes in rats. The granules or granular dense substance was observed in the cistena of endoplasmic reticulum or Golgi complex. The specific granules(SG) were classified as A and B types, type-A granules were in the majority, containing the granule core of electron density,and type-B were in the minority,characterized by a pale, fibrogranule core. SG was seen closely approaching the sarcolemma and fusing with the sarcolemma with a small breach in the latter. This phenomenon was occassionally observed in the T-system. Part or complete membrane lysis of some granules was observed,forming a non-membrane-bounded, electron-dense granules. The results of this study supplied some new norphological data for the production and classification of SG and for multiple ways of releasing atrial natriuretic polypeptide.
出处 《湖北医科大学学报》 1994年第2期108-111,共4页
关键词 心房 细胞质 颗粒 超微结构 heart atrium cytoplasmic granules/UL
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同被引文献23

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  • 2王保芝,申新华,崔慧先,王学礼,刘贵生,王丽.神经垂体多肽激素分泌颗粒释放形式和转运途径的形态学研究[J].解剖学报,2004,35(5):530-533. 被引量:7
  • 3李继承,陈肖波,章成伟,钟灵健,俞寿民.人体腹膜孔淋巴引流单位的超微结构研究[J].解剖学报,1995,26(1):101-104. 被引量:4
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  • 9常芸,林福美.耐力训练与心脏内分泌研究之二——不同强度、不同量耐力训练后大鼠心房超微结构的改变[J]中国运动医学杂志,1993(02).
  • 10Hirotaka Toshimori,Kiyotaka Toshimori,Naoto Minamino,Kenji Kangawa,Chikayoshi Oura,Shigeru Matsukura,Hisayuki Matsuo. Chicken atrial natriuretic peptide (chANP) and its secretion[J] 1990,Cell and Tissue Research(2):293~298

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