Ultrastructural Localization of Glucose-6-Phosphatasc Activity in Myocardial Cells of the Rats
- VernacularTitle:大鼠心肌细胞葡萄糖-6-磷酸酶活性的超微结构定位
- Author:
Renpeng WANG
;
Yu SUN
;
- Publication Type:Journal Article
- Keywords:
glucosephosphatase;
myocardtum/UL;
sarcoplasmic reticulum;
enzyme activity
- From:Journal of Third Military Medical University
1983;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Glucose-6-phosphatase(G-6-Pase) activity in the atrial and ventricular muscle cells of the rats is examined by electron microscopy. The reaction product of G-6-Pase activity is present in the sarcoplasmic reticulum (SR) and the nuclear envelope of the myocardial cells. A heterogenous distribution of G-6-Pase activity in the cardial muscle cells is detected.In the myocardial cells the cytochemical reaction product for G-6-Pase activity is observed in a larger amount in the peripheral junctional sarcoplasmic reticulum(PJ-SR)and interior junctional SR(IJ-SR), and in smaller amounts in the nuclear envelope, is rarely present or absent in the network SR(N-SR).The possible functional significance of G-6-Pase in cardial muscle cells is discussed.
