Effect of Melatonin Intake on Oxidative Stress Biomarkers in Male Reproductive Organs of Rats under Experimental Diabetes

Figure 3

Glutathione-S-transferase activity (U/mg protein) in blood (a), prostate (b), testis (c), and epididymis (d) extracts. C1: one-week control; M1: one-week control treated with melatonin; D1: one-week diabetic; MD1: one-week diabetic treated with melatonin; C2: two-month control; M2: two-month control treated with melatonin; D2: two-month diabetic; MD2: two-month diabetic treated with melatonin ( animals/group). Different lowercase letters indicate statistical differences among short-term experimental groups (nonparametric data: (a), (b), (c), and (d)). Different uppercase letters indicate statistical differences among long-term experimental groups (parametric data: (c) and (d); nonparametric data: (a) and (b)). Indicates a statistical difference between experimental periods (parametric data). # Indicates a statistical difference between experimental periods (nonparametric data).

(a)  

(b)

(c)

(d)