Abstract:
:Orally administered dihomo-gamma-linolenic acid (DHLA) is well absorbed in man; it appears in blood after ca. 4 hr first as triglyceride ester and later as phospholipid. After sustained-dosing, DHLA penetrated membrane pools and all phospholipid components but, depending on the dosage, reached a metabolic equilibrium in 4-16 days. Intact platelets do not accumulate arachidonate following DHLA administration, and species differences occur in the capacity of animals to metabolize DHLA to arachidonic acid (AA). The rat appears to be unusual in having a very active hepatic delta5-desaturase enzyme system. Potentially antithrombotic changes in platelet function which followed the administration of DHLA to man were accompanied by a significant increase in the capacity of platelets to synthesize PGE1. Concomitant increases in PGE2 synthesis do not apparently result from an increased production of AA and suggest that DHLA, or a DHLA metabolite, interferes with the metabolism of AA. Effects on thromboxane and prostacyclin synthesis are being studied.
journal_name
Lipidsjournal_title
Lipidsauthors
Stone KJ,Willis AL,Hart WM,Kirtland SJ,Kernoff PB,McNicol GPdoi
10.1007/BF02533869subject
Has Abstractpub_date
1979-02-01 00:00:00pages
174-80issue
2eissn
0024-4201issn
1558-9307journal_volume
14pub_type
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