Effect of Aerobic Training and Octopamine Supplementation on the Expression of Octopamine Receptors in the Visceral Adipose Tissue of Rats Exposed to Deep Fried Oils

The use of deep fried oils (DFOs) to cook foods is associated with numerous diseases. Although the role of physical activity and some supplements on fat lipolysis has been established, the effect of aerobic training (AT) and octopamine (Oct) on octopamine receptor-dependent lipolysis pathway is not well understood.

The present study aimed to investigate the effect of AT and Oct supplementation on the expression of Oct receptors in the visceral adipose tissue of DFO-exposed rats.

In this experimental study, 30 male Wistar rats were divided into (1) healthy control (C), (2) DFO, (3) DFO + Oct, (4) DFO + AT, and (5) DFO + Oct + AT groups. Aerobic training was performed for four weeks, five sessions per week at an intensity of 16 - 26 m/min and equivalent to 50% - 65% VO2max, and Otc supplement was interperitoneally injected at 81 µmol/kg five days a week.

Aerobic training and Oct supplementation increased tyramin-R and hormone-sensitive lipase (HSL) (P ≤ 0.05), while Oct significantly decreased G protein-coupled receptors (GPCR) (P ≤ 0.05). Also, the interaction of AT and Oct on GPCR reduction was significant (P ≤ 0.05).

It seems that AT and Otc alone improve octopamine receptors and lipolysis markers in the visceral adipose tissue of DFO-treated rats, but these two factors have no interactive effects on this pathway.