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Vinpocetine and pyritinol: a new model for blood rheological modulation in cerebrovascular disorders—a randomized
Hayder M Alkuraishy1, Ali I Al-Gareeb1, Ali K Albuhadilly2
1Department of Pharmacology, Toxicology and Medicine, College of Medicine, Al-Mustansiriya University, P.O. Box 14132, Baghdad, Iraq.
Abstract:
Blood and plasma viscosity are the major factors affecting blood flow and normal circulation. Whole blood viscosity is mainly affected by plasma viscosity, red blood cell deformability/aggregation and hematocrit, and other physiological factors. Thirty patients (twenty males + ten females) with age range 50-65 years, normotensive with history of cerebrovascular disorders, were selected according to the American Heart Stroke Association. Blood viscosity and other rheological parameters were measured after two-day abstinence from any medications. Dual effects of vinpocetine and pyritinol exhibit significant effects on all hemorheological parameters (P < 0.05), especially on low shear whole blood viscosity (P < 0.01), but they produced insignificant effects on total serum protein and high shear whole blood viscosity (P > 0.05). Therefore, joint effects of vinpocetine and pyritinol improve blood and plasma viscosity in patients with cerebrovascular disorders.
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