TY - JOUR
T1 - Effects of exercise and oral antioxidant supplementation enriched in (n - 3) fatty acids on blood oxidant markers and erythrocyte membrane fluidity in horses
AU - De Moffarts, B.
AU - Portier, K.
AU - Kirschvink, N.
AU - Coudert, J.
AU - Fellmann, N.
AU - van Erck, E.
AU - Letellier, C.
AU - Motta, C.
AU - Pincemail, J.
AU - Art, T.
AU - Lekeux, P.
PY - 2007/7
Y1 - 2007/7
N2 - The aim of this study was to investigate in a placebo-controlled field study the effect of a (n - 3)-vitamin supplementation on erythrocyte membrane fluidity (EMF), oxidant/antioxidant markers and plasmatic ω3/ω6 fatty acid ratio (FAR) in 12 eventing horses. Venous blood was sampled at rest before (PRE) and after (POST) a three week treatment period with either the supplement (group S, n = 6) or a placebo (group P, n = 6) as well as after 15 min (POST E15′) and 24 h (POST E24h) after a standardised exercise test. The following markers were analysed: EMF, plasma antioxidant capacity of water and lipid soluble components, ascorbic acid, uric acid (UA), glutathione (reduced: GSH, oxidised: GSSG), vitamin E (Vit E), β-carotene, glutathione peroxidase (GPx) and superoxide dismutase (SOD) activity, selenium, copper (Cu), zinc (Zn), oxidised proteins (Protox), lipid peroxides (Pool) and FAR. EMF did not differ between group S and P after treatment, but GPx remained unchanged in group S whereas it decreased in group P and plasma Cu/Zn ratio remained unchanged whereas it increased in group P. FAR were significantly increased in group S. Exercise induced a significant decrease of EMF (POST vs. E24h) in both groups, but which was significantly lower at E15′ in group S than in group P. Exercise induced a significant increase of UA and ACW (POST vs. E15′) and Protox (POST vs. E24h) in both groups. An exercise-related decrease in GSH and Pool (POST vs. E15′) was found in group P, whereas Vit E and FAR (POST vs. E24h) significantly decreased in both groups. The study showed that exercise induced a decrease in EMF in horses associated with changes of blood oxidative balance. The (ω-3)-vitamin supplementation tested improved the oxidative balance poorly but delayed the exercise-induced decrease of EMF and increased the FAR.
AB - The aim of this study was to investigate in a placebo-controlled field study the effect of a (n - 3)-vitamin supplementation on erythrocyte membrane fluidity (EMF), oxidant/antioxidant markers and plasmatic ω3/ω6 fatty acid ratio (FAR) in 12 eventing horses. Venous blood was sampled at rest before (PRE) and after (POST) a three week treatment period with either the supplement (group S, n = 6) or a placebo (group P, n = 6) as well as after 15 min (POST E15′) and 24 h (POST E24h) after a standardised exercise test. The following markers were analysed: EMF, plasma antioxidant capacity of water and lipid soluble components, ascorbic acid, uric acid (UA), glutathione (reduced: GSH, oxidised: GSSG), vitamin E (Vit E), β-carotene, glutathione peroxidase (GPx) and superoxide dismutase (SOD) activity, selenium, copper (Cu), zinc (Zn), oxidised proteins (Protox), lipid peroxides (Pool) and FAR. EMF did not differ between group S and P after treatment, but GPx remained unchanged in group S whereas it decreased in group P and plasma Cu/Zn ratio remained unchanged whereas it increased in group P. FAR were significantly increased in group S. Exercise induced a significant decrease of EMF (POST vs. E24h) in both groups, but which was significantly lower at E15′ in group S than in group P. Exercise induced a significant increase of UA and ACW (POST vs. E15′) and Protox (POST vs. E24h) in both groups. An exercise-related decrease in GSH and Pool (POST vs. E15′) was found in group P, whereas Vit E and FAR (POST vs. E24h) significantly decreased in both groups. The study showed that exercise induced a decrease in EMF in horses associated with changes of blood oxidative balance. The (ω-3)-vitamin supplementation tested improved the oxidative balance poorly but delayed the exercise-induced decrease of EMF and increased the FAR.
KW - (ω-3)PUFA
KW - Antioxidant
KW - Exercise
KW - Horses
KW - Membrane fluidity
UR - http://www.scopus.com/inward/record.url?scp=34249902060&partnerID=8YFLogxK
U2 - 10.1016/j.tvjl.2006.06.001
DO - 10.1016/j.tvjl.2006.06.001
M3 - Article
C2 - 17110141
AN - SCOPUS:34249902060
SN - 1090-0233
VL - 174
SP - 113
EP - 121
JO - Veterinary journal
JF - Veterinary journal
IS - 1
ER -