Measurement of Nucleotide Pools in Platelets Using High Pressure Liquid Chromatography

Leo D’Souza; Helen I. Glueck

doi:10.1055/s-0038-1651917

Thrombosis and Haemostasis, Inhaltsverzeichnis

Thromb Haemost 1977; 38(04): 0990-1001
DOI: 10.1055/s-0038-1651917

Original Article

Schattauer GmbH

Measurement of Nucleotide Pools in Platelets Using High Pressure Liquid Chromatography

Leo D’Souza

¹Department of Internal Medicine (Coagulation Laboratory), University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, U.S.A.

,

Helen I. Glueck

¹Department of Internal Medicine (Coagulation Laboratory), University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, U.S.A.

› Institutsangaben

Abstract

Summary

We have devised an improved high pressure liquid chromatographic technique whereby serotonin, nucleosides, cyclic nucleotides, namely cAMP and cGMP, and 5’ mono-, 5’ di-, and 5’ tri-nucleotides can be analyzed. The cyclic nucleotides have been measured in pico molar quantities. All nucleotides can be quantitated in a single step separation in 75 min using a 0.0015 M phosphoric acids vs. 1 M pH 4.8 ammonium phosphate gradient. 5/10 ml of platelet-rich plasma furnishes an adequate sample for complete analysis. Nucleotide levels in platelets from 16 normal donors expressed in 10¹¹ platelets are as follows: cAMP, 6.32 (4.15) nanomoles and AMP, 0.32(0.14); ADP, 2.48 (0.67); ATP 3.78 (0.68); GDP 0.38 (0.07) and GTP, 0.45 (0.07) micromoles. ADP and ATP values are lower than those previously published. However, the total nucleotide level approaches published values.

Upon aggregation with thrombin, approximately 50% of ADP and 40 % ATP is released. Release is complete by 2 min. Thrombin is the most potent releasing agent with collagen and ADP occupying an intermediate role and epinephrine being the least effective. Upon aggregation cyclic AMP levels diminish along with other nucleotides. Patients with asthma showed depression of ADP, ATP, GDP and GTP levels.

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Referenzen

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