PMID- 29980209 OWN - NLM STAT- MEDLINE DCOM- 20181015 LR - 20181114 IS - 1746-6148 (Electronic) IS - 1746-6148 (Linking) VI - 14 IP - 1 DP - 2018 Jul 6 TI - Effect of prolonged submaximal exercise on serum oxidative stress biomarkers (d-ROMs, MDA, BAP) and oxidative stress index in endurance horses. PG - 216 LID - 10.1186/s12917-018-1540-y [doi] LID - 216 AB - BACKGROUND: Oxidative stress (OS) associated with an intense exercise may have a negative influence on equine health. The aim of this study was to determine the effects of endurance races on oxidative and antioxidative status of horses by evaluating changes in reactive oxygen metabolites (d-ROMs), malondialdehyde (MDA), biological antioxidant potential (BAP) and oxidative stress index (OSI) values. The study was carried out on 53 race starts (28 individual horses) competing at different endurance races according to distance (40 and 80 km) and difficulty (easy and demanding). Blood samples were taken before and after the race. RESULTS: Compared to levels of OS serum biomarkers before the race, an increase in values of d-ROMs (P < 0.01), MDA (P < 0.01), and BAP (P < 0.001), and a decrease in OSI (P < 0.001) have been noted after the race. Contrary to other measured biomarkers, BAP did not show significant individual effects of horses. Horses competing at shorter races have shown a significant change in d-ROMs (P = 0.002), BAP (P < 0.001) and OSI (P = 0.004), whereas those competing at longer races in MDA (P = 0.002), BAP (P < 0.001) and OSI (P < 0.001) post-race values. Endurance racing induced changes in values of d-ROMs, BAP and OSI during both easy and demanding races. CONCLUSIONS: Changes in all measured OS biomarkers indicate that prolonged aerobic exercise during endurance race could contribute to the imbalance between oxidants and antioxidants in horses, mainly characterised by a pronounced antioxidant response. Biological antioxidant potential was found to be the most reliable biomarker of OS in endurance horses in the present study. FAU - Brkljaca Bottegaro, Nika AU - Brkljaca Bottegaro N AUID- ORCID: 0000-0003-1622-0270 AD - Clinic for Surgery, Orthopaedics and Ophthalmology, Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10 000, Zagreb, Croatia. nikabottegaro@gmail.com. FAU - Gotic, Jelena AU - Gotic J AD - Clinic for Internal Diseases, Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10 000, Zagreb, Croatia. FAU - Suran, Jelena AU - Suran J AD - Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10 000, Zagreb, Croatia. FAU - Brozic, Diana AU - Brozic D AD - Department of Animal Nutrition and Dietetics, Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10 000, Zagreb, Croatia. FAU - Klobucar, Karla AU - Klobucar K AD - Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10 000, Zagreb, Croatia. FAU - Bojanic, Krunoslav AU - Bojanic K AD - School of Veterinary Science, Massey University, Palmerston North, New Zealand. FAU - Vrbanac, Zoran AU - Vrbanac Z AD - Department of Radiology, Ultrasound Diagnostic and Physical Therapy, Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10 000, Zagreb, Croatia. LA - eng PT - Journal Article DEP - 20180706 PL - England TA - BMC Vet Res JT - BMC veterinary research JID - 101249759 RN - 0 (Antioxidants) RN - 0 (Biomarkers) RN - 0 (Reactive Oxygen Species) RN - 4Y8F71G49Q (Malondialdehyde) SB - IM MH - Animals MH - Antioxidants/analysis MH - Biomarkers/blood MH - Female MH - Horses/blood/metabolism/*physiology MH - Male MH - Malondialdehyde/*blood MH - Oxidative Stress/*physiology MH - Physical Conditioning, Animal/*physiology MH - Reactive Oxygen Species/*blood PMC - PMC6035461 OTO - NOTNLM OT - Biological antioxidant potential OT - Endurance race OT - Horse OT - Malondialdehyde OT - Oxidative stress OT - Oxidative stress index OT - Reactive oxygen metabolites COIS- ETHICS APPROVAL AND CONSENT TO PARTICIPATE: A written consent statement was obtained from the owners of animals included in the study. The Ethical Board of the Faculty of Veterinary Medicine approved the study (File No. 640-01/16-17/75; Record No. 251-61-01/139-16-2). CONSENT FOR PUBLICATION: Not applicable. COMPETING INTERESTS: The authors declare that they have no competing interests. PUBLISHER'S NOTE: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. EDAT- 2018/07/08 06:00 MHDA- 2018/10/16 06:00 PMCR- 2018/07/06 CRDT- 2018/07/08 06:00 PHST- 2018/02/08 00:00 [received] PHST- 2018/06/24 00:00 [accepted] PHST- 2018/07/08 06:00 [entrez] PHST- 2018/07/08 06:00 [pubmed] PHST- 2018/10/16 06:00 [medline] PHST- 2018/07/06 00:00 [pmc-release] AID - 10.1186/s12917-018-1540-y [pii] AID - 1540 [pii] AID - 10.1186/s12917-018-1540-y [doi] PST - epublish SO - BMC Vet Res. 2018 Jul 6;14(1):216. doi: 10.1186/s12917-018-1540-y.