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Published in: European Journal of Applied Physiology 3/2011

01-03-2011 | Original Paper

Modulation of circulating purines and pyrimidines by physical exercise in the horse

Authors: Daniela Alberghina, Giuseppe Piccione, Angela Maria Amorini, Serafina D’Urso, Salvatore Longo, Marika Picardi, Barbara Tavazzi, Giuseppe Lazzarino

Published in: European Journal of Applied Physiology | Issue 3/2011

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Abstract

This study was designed to examine the influence of sub-maximal exercise on purine and pyrimidine catabolism in horses. Ten horses were initially trained for 12 weeks at the end of which they underwent a standardized exercise test (SET); venous blood samples were taken at rest, 5 and 30 min after the SET. Six untrained healthy horses, from which a blood withdrawal was taken at rest, were used as the control group. Samples were analyzed by HPLC for the simultaneous determination of uric acid, uridine, β-pseudouridine and creatinine in plasma. Glucose and lactate were measured in blood. Trained horses had basal uridine levels significantly lower than sedentary horses. The SET caused significant increase in plasma uric acid, uridine, β-pseudouridine and creatinine. Following the SET, a significant negative correlation was found between plasma uridine and glucose, whilst a significant positive correlation was observed between plasma uric acid and creatinine. These results indicate that increase in energy demand during exercise in the horse causes not only the degradation of purine but also of pyrimidine compounds, the latter possibly exerting a control on glucose uptake as also demonstrated in human beings.
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Metadata
Title
Modulation of circulating purines and pyrimidines by physical exercise in the horse
Authors
Daniela Alberghina
Giuseppe Piccione
Angela Maria Amorini
Serafina D’Urso
Salvatore Longo
Marika Picardi
Barbara Tavazzi
Giuseppe Lazzarino
Publication date
01-03-2011
Publisher
Springer-Verlag
Published in
European Journal of Applied Physiology / Issue 3/2011
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-010-1673-6

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