Pterostilbene administration improves the recovery potential of extremely low-frequency magnetic field in acute renal ischemia-reperfusion injury: an FTIR spectroscopic study

Abstract

Renal ischemia-reperfusion (I/R) injury, one of the drastic outcomes of renal failure and organ transplantation, tends todeteriorate over time; therefore, noninvasive therapeutic strategies will avail the progression-free survival of the patients. Magneticfield has been proposed as a noninvasive treatment strategy; however, with recent scientific advances, many controversies have arisenregarding its efficacy. Pterostilbene, a natural analog of resveratrol, was documented to be effective in treatment of I/R injuries. Thisstudy aims to assess the acute therapeutic effects of combined extremely low-frequency magnetic field (ELF-MF) and pterostilbenetreatment on renal I/R injury. After induction of renal I/R in Wistar rats, treatments of 50 Hz, 1 mT ELF-MF applied alone or incombination with pterostilbene were applied for 5 consecutive days. Kidney homogenates were analyzed by Fourier transform infraredspectroscopy. I/R injury resulted in an altered protein and lipid structure with the dominance of longer acyl chains; a slight decrease inlipid, protein, unsaturated lipid, and unsaturated/saturated lipid content; and an increase in membrane fluidity and lipid peroxidationin rat kidneys. Although ELF-MF treatment alone was not sufficient to restore all ischemia-induced alterations, the combined treatmentstrategy of pterostilbene administration in the presence of ELF-MF was successful and warrants further investigation.