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Trans-prostaglandin E2 enhances fibrinolysis
T Urano1, M Shimokawa, T Kinoshita
1Department of Analytical Chemistry, School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan.
Journal of Pharmacobio-Dynamics
|May 1, 1992
Summary
5,6-trans-Prostaglandin E2 (trans-PG E2) accelerates fibrinolysis by enhancing plasmin generation. This prostaglandin speeds up clot breakdown, unlike its cis isomer, indicating a specific role in the fibrinolytic system.
Area of Science:
- Biochemistry
- Physiology
- Pharmacology
Background:
- Fibrinolysis is a critical process for maintaining vascular patency.
- Prostaglandins are lipid compounds with diverse physiological roles.
- The specific role of prostaglandin E2 isomers in fibrinolysis requires further elucidation.
Purpose of the Study:
- To investigate the effect of 5,6-trans-Prostaglandin E2 (trans-PG E2) on fibrinolysis.
- To compare the activity of trans-PG E2 with its cis isomer.
- To determine the mechanism by which trans-PG E2 influences fibrinolysis.
Main Methods:
- Cell-free system utilized for fibrinolysis assays.
- Fibrin clot lysis time method employed.
- Fibrin plate method used to assess lysis area.
- Assays conducted in the presence and absence of key fibrinolytic components.
Main Results:
- trans-PG E2 significantly decreased fibrin clot lysis time by 15%.
- trans-PG E2 increased fibrinolysis area by 22% on fibrin plates.
- 5,6-cis-prostaglandin E2 showed no significant effect on fibrinolysis.
- The pro-fibrinolytic activity of trans-PG E2 was dependent on tissue-plasminogen activator and plasminogen.
Conclusions:
- 5,6-trans-Prostaglandin E2 enhances fibrinolysis.
- trans-PG E2 likely acts by promoting plasmin generation from plasminogen via tissue-plasminogen activator.
- This finding suggests a potential therapeutic role for trans-PG E2 in modulating blood clot breakdown.