摘要
介绍了近年来对细胞内Ｃａ２＋平衡机制的研究成果。重点陈述了Ｃａ２＋的升高机制和Ｃａ２＋的降低机制以及Ｃａ２＋池和Ｃａ２＋缓冲系统的作用机理。在Ｃａ２＋升高机制中介绍了内质网或肌浆网膜上的Ｃａ２＋释放通道（ＩＰ３受体和Ｒｙｒ通道）和细胞膜上的Ｃａ２＋流入的通道（三种），在降低机制中介绍了Ｃａ２＋泵和Ｎａ＋／Ｃａ２＋交换子。同时也提到了Ｃａ２＋缓冲系统。
The author has mainly discusses the mechanism of cellular calcium homeostasis, particularly Ca 2+ increasing, Ca 2+ -decreasing, and Ca 2+ -buffering mechanisms. The author intruduces IP 3 receptor channels, ryanodine channels and several plasma membrane calcium channels. At meantime, the author also presents Ca 2+ -pump and Na + /Ca 2+ exchangers.
