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  • Title: Rapid change of platelet aggregability in acute hyperglycemia. Detection by a novel laser-light scattering method.
    Author: Sakamoto T, Ogawa H, Kawano H, Hirai N, Miyamoto S, Takazoe K, Soejima H, Kugiyama K, Yoshimura M, Yasue H.
    Journal: Thromb Haemost; 2000 Mar; 83(3):475-9. PubMed ID: 10744156.
    Abstract:
    We examined the alteration of platelet aggregability in acute hyperglycemia during 75-gram oral glucose tolerance tests (OGTT). Twenty subjects underwent 75-gram OGTT and venous blood samples were obtained before (0 min), 60, 120 and 180 min postload. Platelet aggregability shown as the number of small platelet aggregates was measured with a novel laser-light scattering (LS) method. Platelet aggregability increased in parallel with both glucose and immunoreactive insulin (IRI) levels. The number of mean small aggregates at 60 min (12.30 +/- 1.10 X 10(4)) was significantly higher than the one at 0 min (8.32 +/- 0.88 x 10(4), p <0.001), 120 min (10.63 +/- 0.98 x 10(4), p <0.05) and 180 min (8.28 +/- 0.84 x 104, p <0.001) (mean +/- SEM). Small aggregates correlated positively with plasma glucose levels at 60 min postload (r = 0.67, p = 0.001) while not with IRI. It might be important to suppress transient hyperglycemia for preventing the onset of acute coronary syndromes that could be closely related to platelet hyperaggregability.
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