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  • Title: Increased activity of the platelet-activating factor acetylhydrolase in plasma low density lipoprotein from patients with essential hypertension.
    Author: Satoh K, Imaizumi T, Kawamura Y, Yoshida H, Takamatsu S, Takamatsu M.
    Journal: Prostaglandins; 1989 Jun; 37(6):673-82. PubMed ID: 2772220.
    Abstract:
    We have measured activity of platelet-activating factor (PAF) acetylhydrolase, an enzyme that specifically inactivates PAF, in plasma from patients with essential hypertension and healthy controls. The average activities in 34 patients and 22 controls were 113 +/- 60 and 79 +/- 32 nmol/ml/min, respectively, and the difference was significant (p less than 0.05). Approximately three fourths of the total plasma activity was recovered in LDL, with the remainder in HDL; and there was a significant difference in the activity associated with the LDL between patients and controls. The relative distribution of the activity among lipoproteins was almost equal in the two groups, and there was no difference in plasma lipids or apoproteins between them. In patients there was a tendency for plasma PAF acetylhydrolase activity to increase with the length of the history of hypertension. Further studies are needed to distinguish between a number of reasons for increased levels of plasma PAF acetylhydrolase in essential hypertension.
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