Inhibitory effects of cordycepin (3'-deoxyadenosine), a component of Cordyceps militaris, on human platelet aggregation induced by thapsigargin.
Cordycepin (3'-deoxyadenosine) is an adenosine analog, isolated from Cordyceps militaris, and it has been used as an anticancer and anti-inflammation ingredient in traditional Chinese medicine. We investigated the effects of cordycepin (3'-deoxyadenosine) on human platelet aggregation, which was induced by thapsigargin, a tumor promoter, and determined the cytosolic free Ca2+ levels ([Ca2+]i) (an aggregation-stimulating molecule) and cyclic-guanosine monophosphate (cGMP) (an aggregation-inhibiting molecule). Cordycepin inhibited thapsigargin-induced platelet aggregation in a dose-dependent manner, and it clearly reduced the levels of [Ca+]i, which was increased by thapsigargin (1 microM) or U46619 (3 microM). Cordycepin also increased the thapsigargin-reduced cGMP levels. Accordingly, our data demonstrated that cordycepin may have a beneficial effect on platelet aggregation-mediated thrombotic diseases through the [Ca2+]i-regulating system such as cGMP.
Department of Biomedical Laboratory Science, College of Biomedical Science and Engineering, and Regional Research Center, Inje University, Gyungnam 621-749, Korea.
Hyun-Jeong
HJ
Cho
Jae Youl
JY
Cho
Man Hee
MH
Rhee
Hyeong-Soo
HS
Kim
Hyun-Sub
HS
Lee
Hwa-Jin
HJ
Park
D032661:Cordyceps / Q000737:chemistry*; D003839:Deoxyadenosines / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D006801:Humans; D010974:Platelet Aggregation / Q000187:drug effects*; D010975:Platelet Aggregation Inhibitors / Q000494:pharmacology*; D019284:Thapsigargin / Q000494:pharmacology
D003839:Deoxyadenosines; D010975:Platelet Aggregation Inhibitors; D019284:Thapsigargin; C058120:cordycepin