肌浆网(sarcoplasmic reticulum),又称为肌质网,是肌纤维内特化的滑面内质网,位于两个横小管之间;纵行包绕每条肌原纤维周围,称纵小管;两端扩大呈扁囊状,称终池. 功能:储存钙离子。当肌质网膜接受兴奋后,钙通道开放,使肌质网内储存的钙离子大量释放到肌质内。
肌浆网 SR ; sarcoplasmic reticulum ; Sarohleasnic reticulum
肌浆网钙泵 SERCA ; SERCA-ATPase
心肌肌浆网钙泵 SERCA
肌浆网受磷蛋白 phospholamban ; PLN
患者的肌浆网受磷蛋白 phospholamban ; PLN
选择肌浆网钙泵抑制剂 Thapsigargin
肌浆内质网 SR ; sarcoplasmic reticulum
There are increased amount of Ca2+ in homogenate of myocardial tissues,to which may be contributed by the impared activity of Ca2+--pump in sarcoplasmic reticulum.
心衰时心肌组织匀浆中Ca2+增加,可能是肌浆网钙泵活性受损。
参考来源 - 氯沙坦干预对心衰大鼠心肌细胞凋亡和Ca~(2+)变化的影响These observations demonstrate that the spontaneous secretion from isolated myocytes and the effect of ryanodine on ACh-loaded cells are both independent of extracellular Ca~(2+) while Ca~(2+) in the sarcoplasmic reticulum plays a crucial role in the secretions.
这些结果说明加载ACh的肌细胞的自发分泌以及ryanodine对这些细胞的影响都不依赖于细胞外的Ca~(2+)。 由于ryanodine受体位于肌浆网膜上,因而在这种分泌过程中,肌浆网的钙库起着重要的作用。
参考来源 - 钙离子对孤立肌细胞ACh自发分泌作用机理的研究·2,447,543篇论文数据,部分数据来源于NoteExpress
肌浆网属于细胞内膜系统。
The sarcoplasmic reticulum is a system of intracellular membranes.
其机制可能与抑制钙离子的内流及改变肌浆网上的钙泵活性有关。
Its mechanism may be related to inhibition of calcium influx and mediation activity of calcium pump in sarcoplasmic reticulum.
肌浆网是调控心肌细胞钙稳态、蛋白质合成和细胞凋亡的重要亚细胞器。
Sarcoplasmic reticulum is a principal subcellular organelle which regulates calcium homeostasis, protein synthesis, and apoptosis of cardiomyocytes.
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