“…21 The research more and more often includes selenoorganic compounds -either naturally occurring forms or newly synthesized substances, e.g., selenomethionine, naphthalimide-based selenocyanates, 2-(5-selenocyanatopentyl)-benzo[de]isoquinoline-1,3-dione, diphenyl diselenide, selenofuranoside, p-methoxyldiphenyl diselenide, selenocyanates, and diphenylmethyl selenocyanate. [4][5][6]9,16,17,19,20,[22][23][24][25][26] The results regarding the comparison of inorganic and organic compounds are not fully consistent, although the newest studies usually reveal plasma urea and plasma creatinine ↑; kidney vitamin C, GSH, GST, GPx, GR, CAT, δ-ALA-D ↓ p-methoxyl-diphenyl diselenide 50 mg/kg or 100 mg/kg, orally 6 days lower dose: plasma urea (±); plasma creatinine (0); kidney GSH, GST, GPx, GR, δ-ALA-D (±); kidney vitamin C, CAT (+) higher dose: plasma urea and plasma creatinine (±), kidney GSH, GST, GPx, GR, vitamin C, CAT (+) kidney δ-ALA-D (±) none ↓ -decrease; ↑ -increase; (+) -full protection; (±) -partial protection; (0) -lack of protection; GST -glutathione S-transferase; GPx -glutathione peroxidase; CAT -catalase; SOD -superoxide dismutase; GSH -reduced glutathione; TBARS -thiobarbituric acid-reactive substances; GR -glutathione reductase; δ-ALA-D -δ-aminolevulinic dehydratase..…”