Burford G D, Clifford P, Jones C W, Pickring B T
Biochem J. 1973 Dec;136(4):1053-8. doi: 10.1042/bj1361053.
The change in the radioactivity of vasopressin-neurophysin in the rat neurohypophysis after an intracisternal injection of [(35)S]cysteine was fitted to several mathematical models. The data fitted best a model in which there is a linear input of radioactive protein into one pool of the neurohypophysis, from which it is either released by an exponential process or transferred to a second pool from which it is released by a second exponential process with a rate constant much lower than the first. This model is compatible with the existence of a ;readily releasable' pool first postulated by Sachs et al. (1967). Data for the change in radioactivity of vasopressin also gave a good fit in this model. Calculation of the rate constants suggested that the first pool represented about 2% of the total hormone.
在大鼠脑池内注射[(35)S]半胱氨酸后,对大鼠神经垂体中血管升压素-神经垂体素放射性的变化进行了几种数学模型拟合。数据最符合的模型是:放射性蛋白质以线性方式输入神经垂体的一个池,该池中放射性蛋白质要么通过指数过程释放,要么转移到第二个池,从第二个池中以比第一个池低得多的速率常数通过第二个指数过程释放。该模型与萨克斯等人(1967年)首次提出的“易于释放”池的存在相一致。血管升压素放射性变化的数据在该模型中也拟合得很好。速率常数的计算表明,第一个池约占总激素的2%。