大鼠和豚鼠眼外肌神经肌肉接头处胆碱酯酶的定量研究。
A quantitative study of cholinesterase in myoneural junctions from rat and guinea-pig extraocular muscles.
作者信息
Buckley G A, Heaton J
出版信息
J Physiol. 1968 Dec;199(3):743-9. doi: 10.1113/jphysiol.1968.sp008676.
Abstract
- Cholinesterase staining of rat and guinea-pig extraocular muscle shows focally and multiply innervated fibres.2. The distribution of cholinesterase activities in the populations of focal endings (from singly innervated fibres) and fine motor endings (from multiply innervated fibres) was determined by a sensitive radiochemical method.3. Focal endings had a greater cholinesterase activity than fine motor endings.4. It is suggested that this difference in enzyme activities is related to the functional difference between twitch and slow fibres in extraocular muscle.
摘要
大鼠和豚鼠眼外肌的胆碱酯酶染色显示有局部和多重支配的纤维。
采用灵敏的放射化学方法测定了局部终末（来自单根支配纤维）和精细运动终末（来自多重支配纤维）群体中胆碱酯酶的活性分布。
局部终末的胆碱酯酶活性高于精细运动终末。
有人认为这种酶活性的差异与眼外肌中快肌纤维和慢肌纤维之间的功能差异有关。
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