Total areas of MDA peaks of samples were compared with a standard

Total areas of MDA peaks of samples were compared with a standard curve obtained with 1,1,2,2-tetraethoxypropane (also in methanol 30 %). Total MDA released in plasma was calculated by determining the area under curves within the time-span of t0 and t60 (AUCt0-t60). Statistical analysis All data were analyzed

using a 2×2 Factorial (two-way) ANOVA for creatine supplementation and pre-/post variations followed by a post hoc Tukey test to investigate possible interactions between groups (statistical tool VassarStats, on March 7th, 2012, available online at: http://​faculty.​vassar.​edu/​lowry/​anova2u.​html). Results were expressed as mean ± SEM Talazoparib of, at least, triplicates of experiments. Results After supplementation but before the anaerobic test (Wpost; section 2.4), creatine-fed subjects showed a significant 2.4-fold increase in plasmatic iron (t0 post/t0 pre; p < 0.005), heme iron (80 %; p < 0.05), and FRAP (3-fold; p < 0.05) compared with t0 pre scores, while the placebo group showed no significant change (Table 1). These results were interpreted as the subjects’ basal levels because they were obtained from blood samples collected

before the exhaustive Wingate test (t0 pre and t0 post); thus, they were not related to the oxidative stress imposed by anaerobic exercise. On the other hand, two-way ANOVA test followed by post hoc Tukey’s analysis Enzalutamide mw revealed moderate heterogeneity between group placebo and creatine-fed before the exhaustive Wingate test (Table 1) for all redox parameters analysed, except lipid peroxidation (MDA measurements). Nevertheless, all values found in groups before the Wingate test (t0 pre for both placebo and creatine-fed groups; Table 1) were within the regular range in plasma of human subjects and, thus, could reflect the natural variations expected for human populations.

Biochemical changes in the iron-related parameters were observed together with 28 % lower levels of lipid oxidation (t0 post/t0 pre; Pearson’s r < 0.01), whereas the placebo group was unaltered. Conversely, no change in the total uric acid content in plasma was observed in t0 post/t0 pre ratios from placebo and creatine groups (Table 1). Weight and percent body fat were also unaltered after acute MTMR9 creatine supplementation (data not shown). Table 1 Redox biomarkers of anaerobic exercise in plasma of subjects before (t 0 pre ) and after 20 g/day creatine monophosphate supplementation for 1 week (t 0 post )   Placebo Creatine   t0 pre (a) t0 post (b) t0 pre (c) t0 post (d) Iron content (μg/dL) 33.3 ± 7.8 (§c;*d) 26.3 ± 5.5 (*c) 12.2 ± 3.4 (§a;*b,d) 23.7 ± 1.8 (*a,c) Heme-iron(mg/mL) 7.94 ± 0.43(*c) 7.89 ± 0.24 (*c) 4.77 ± 0.93(*a,b,d) 6.47 ± 0.13 (*c) FRAP (μmolFe 2+ /min/mL) 0.057 ± 0.011(§c,d) 0.077 ± 0.020(§d;*c) 0.110 ± 0.014 (§a,d;*b) 0.300 ± 0.038(§a,b,c) MDA (μmol/L) 0.129 ± 0.023 0.148 ± 0.043 0.186 ± 0.050 0.129 ± 0.025 Uric acid (mg/mL) 1.62 ± 0.94 (§c,d) 1.62 ± 0.75 (§c,d) 2.93 ± 0.49 (§a,b) 3.44 ± 0.39 (§a,b) (§) p < 0.005; (#) p < 0.

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