Abstract:
BACKGROUND:Platelet microparticles (PMPs) are closely associated with diabetic macrovascular complications. This study aimed to explore the underlying mechanisms of high glucose-induced PMPs generation. METHODS:Washed platelets, obtained from the plasma of healthy male Sprague-Dawley rats, were incubated with high glucose. PMPs were isolated using gradient centrifugation and counted by flow cytometry. Expression and activity of ROCK1 and caspase3 were evaluated by real-time PCR, Western blotting, and activity assay kit. RESULTS:High glucose enhanced PMPs shedding in the presence of collagen. The mRNA and protein levels of ROCK1, but not ROCK2, were increased in platelets incubated with high glucose. Y-27632, an inhibitor of ROCK, blocked the increased PMPs shedding induced by high glucose. Expression and activity of caspase3 were elevated in platelets under the high glucose conditions. Z-DVED-FMK, a caspase3 inhibitor, inhibited ROCK1 activity and decreased the PMPs generation under high glucose. CONCLUSION:High glucose increased PMPs shedding via caspase3-ROCK1 signal pathway.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Wang GH,Ma KL,Zhang Y,Hu ZB,Liu L,Lu J,Chen PP,Lu CC,Ruan XZ,Liu BCdoi
10.1016/j.bbrc.2018.12.166subject
Has Abstractpub_date
2019-02-05 00:00:00pages
596-602issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(18)32847-Xjournal_volume
509pub_type
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