Changes of adenine nucleotides content and release reaction of human blood platelets following gamma irradiation

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Abstract
Summary The aim of this work was to examine the effect of gamma irradiation on the energy metabolism and physiological functions of blood platelets. Blood platelets were irradiated with a60Co-source in the range of 0.5–8.0 krad. Before and after irradiation, the free nucleotide content of platelets and the ability of platelets to perform their hemostatic functions (the release reaction with thrombin) were determined. The obtained results demonstrated that: 1. ATP, ADP and AMP content reached minimum values at 1.5–2.0 krad. 2. The ability of platelets to perform the release reaction correlates with the ATP level at doses of 1.5–2.0 krad. At higher doses (6.0–8.0) disturbances of the release reaction, indicating damage to the platelet plasma membranes, were observed.

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