Plasma malondialdehyde, biochemical and haematological parameters in standardbred horses during a selected field exercise test
Jagrič-Munih Sara, Nemec-Svete Alenka, Zrimšek Petra and 4 more
Acta Veterinaria · 2012
doi:10.2298/avb1201053j (opens in a new tab)
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Abstract
Cilj ove studije je bio da se utvrde promene u koncentraciji malonil-dialdehida (MDA) u krvnoj plazmi kao i hematološki i biohemijski profil kod 10 klinički zdravih američkih kasača podvrgnutih odabranim testovima opterećenja na terenu. U krvnom serumu je određivan i odnos između koncentracije MDA, krajnjeg produkta glavne lipidne peroksidacije i aktivnosti enzima mišića, kreatin kinaze (CK) i aspartat aminotransferaze (AST). Uzorski venske krvi za analize su prikupljani u mirovanju, neposredno po završetku opterećenja a zatim i 24 i 48 sati nakon toga. Neposredno po završetku opterećenja, utvrđene su značajne promene većine biohemijskih i hematoloških parametara i one se mogu smatrati normalnim fiziološkim odgovorom. Većina ovih parametara se vratila na vrednosti registrovane u mirovanju u roku od 48 sati. Koncentracija MDA u krvnoj plazmi je odmah posle napora bila povećana, ali ovo povećanje nije bilo statistički značajno za razliku od vrednosti registrovanih 24 sata posle vežbe. Maksimalna vrednost MDA je registrovana nakon 48 sati. Ovaj oksidativni stres je bio indukovan opterećenjem što potvrđuje povećan stepen lipidne peroksidacije. Na osnovu brzog pada aktivnosti CK u serumu po završetku opterećenja i odsustvu značajne korelacije između koncentracije MDA i aktivnosti mišićnih enzima u serumu, može se zaključiti da odabrani testovi opterećenja nisu imali za posledicu trajne alteracije u mišićnim ćelijama i da nisu dovodili do njihovog oštećenja. AB The aim of the present study was to determine changes in plasma malondialdehyde (MDA) concentration and haematological and biochemical profiles in 10 clinically healthy standardbred horses subjected to a selected field exercise test. Correlations between plasma MDA, the main lipid peroxidation end-product, and muscle enzymes: creatine kinase (CK) and aspartate aminotransferase (AST) were determined in serum samples. Venous blood samples for determination of selected blood parameters were collected, immediately post exercise, and 24 and 48 hours post exercise. Significant changes in most of the biochemical and haematological parameters determined immediately after exercise reflect the normal physiological response of horses to a selected field exercise test. Most of these parameters returned to or close to the stall values within 48 hours. The concentration of plasma MDA increased immediately post exercise, though not significantly; however it increased significantly 24 hours post exercise and reached its highest value 48 hours post exercise. Thus exercise-induced oxidative stress is evidenced by increased lipid peroxidation. From the rapid decline of serum CK activity post exercise and the absence of significant correlations between MDA and serum muscle enzymes, we concluded that the selected field exercise test caused no permanent alteration in muscle cell integrity or muscle damage.
Abstract licence: CC BY
References37
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