Abstract:
:Activities of three kinases, phosphatidylinositol (PI), phosphatidylinositol 4-phosphate (PIP), and diacylglycerol (DG) kinases, and phospholipase C were measured in erythrocyte ghosts from spontaneously hypertensive rats (SHR) and normotensive Wistar Kyoto rats (WKY). PI kinase activity was significantly higher in SHR than WKY but there was no significant difference in PIP kinase activity between SHR and WKY. The activity of phospholipase C, which hydrolyzes PIP2, was also increased in SHR. However, DG kinase activity was, on the contrary, decreased in SHR. These results suggest that there is a tendency to accumulate DG in SHR. Indeed, DG content in erythrocytes of SHR increased 1.7-fold compared to that of WKY. Such DG accumulation may cause the sustained activation of protein kinase C in SHR, since DG is a physiological activator for protein kinase C.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Kato H,Takenawa Tdoi
10.1016/0006-291x(87)90808-4subject
Has Abstractpub_date
1987-08-14 00:00:00pages
1419-24issue
3eissn
0006-291Xissn
1090-2104pii
0006-291X(87)90808-4journal_volume
146pub_type
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