The ascorbic/dehydroascorbic acid ratio (AA/DHA, % of sham) in serum, liver, adrenal gland, and kidney, as well as adrenal noradrenaline (NA) and adrenaline (AD) content (µg/mg tissue). Group categories abbreviations: S—sham operated rat group; S + M—sham operated + meldonium rat group; I/R—ischemia/reperfusion rat group; I/R + M—ischemia/reperfusion + meldonium rat group. Number of animals per experimental group: n = 8. The data are given as mean ± standard error. Minimal significant level: p < 0.05. Significantly different: a in respect to S; b in respect to S + M; c in respect to I/R group.