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Updated: Feb 9, 2026
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Turbidimetry on Human Washed Platelets: The Effect of the Pannexin1-inhibitor Brilliant Blue FCF on Collagen-induced Aggregation
Published on: April 6, 2017
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Progranulin inhibits platelet aggregation and prolongs bleeding time in rats
A M Al-Yahya1, A A Al-Masri, E A El Eter
1Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia. abelmasri@gmail.com.
Summary
Progranulin administration significantly inhibited platelet aggregation and prolonged coagulation times in rats. This suggests progranulin has anti-thrombotic effects, potentially protecting against atherosclerosis and related disorders.
Area of Science:
- Biochemistry
- Physiology
- Pharmacology
Background:
- Adipokines from adipose tissue offer anti-thrombotic and anti-atherosclerotic benefits.
- Progranulin, a recently identified adipokine, demonstrates a protective role in atherosclerosis.
- Platelets are central to inflammation and the development of atherosclerosis.
Purpose of the Study:
- To investigate the impact of progranulin on platelet function.
- To assess the effect of progranulin on the coagulation profile in rats.
- To explore progranulin's potential role in preventing thrombotic disorders.
Main Methods:
- Healthy male Wistar rats were divided into four groups.
- Three groups received varying doses of progranulin (0.001, 0.01, 0.1 µg) intraperitoneally.
- Assessed bleeding time, prothrombin time, activated partial thromboplastin time, and platelet aggregation responses.
Main Results:
- Progranulin significantly inhibited platelet aggregation induced by adenosine diphosphate and arachidonic acid.
- Bleeding time, prothrombin time, and activated partial thromboplastin time were significantly prolonged by progranulin administration.
- The highest dose (0.1 µg) showed the most pronounced effects on coagulation and platelet function.
Conclusions:
- Progranulin exhibits antiplatelet and anticoagulant properties in rats.
- These actions suggest a potential physiological protective function against thrombotic disorders.
- Further research is warranted to explore these findings and their implications for obesity and atherosclerosis.
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