Haralambie G, Berg A
Enzyme. 1978;23(2):104-7. doi: 10.1159/000458559.
Creatine kinase (CPK) and hexose phosphate isomerase (PHI) activities were measured in surgically obtained skeletal muscle samples of healthy adult men (n = 45). Median values of 4,200 for CPK and 275 for PHI (U/g wet weight, 37 degrees C) were found. Duplicate determinations on 7 samples divided and treated separately gave a very good reproducibility. There is a significant relationship between the activity of the two enzymes (r = +0.798, p less than 0.001). The mean activity levels were for both enzymes higher in m. vastus medialis quadricipitis and m. triceps brachii, c. long., than in vastus lateralis quadric. and in deltoideus. PHI frequency distribution was not of the normal type but probably bimodal, suggesting muscle types with lower and higher glycolytic rate in man.
在通过手术获取的健康成年男性（n = 45）骨骼肌样本中测量了肌酸激酶（CPK）和磷酸己糖异构酶（PHI）的活性。发现CPK的中位数为4200，PHI的中位数为275（单位/克湿重，37摄氏度）。对7个分别分割和处理的样本进行重复测定，得到了非常好的重现性。两种酶的活性之间存在显著关系（r = +0.798，p < 0.001）。股内侧肌和肱三头肌长头中两种酶的平均活性水平均高于股外侧肌和三角肌。PHI的频率分布不是正态类型，可能是双峰的，提示人类肌肉存在糖酵解速率较低和较高的类型。
