[89:50] Dr
Reversed-phase (RP) HPLC typically uses octadecyl silica (C18) columns in combination with acidic mobile phases, composed of acetonitrile/water [32, 41,42,43], with additives like formic acid (FA) [41, 43, 45, 46], ammonium formate [42, 45, 47, 48], acetic acid (AcA) [49], ammonium acetate [32, 50], trichloroacetic acid (TCA) [38, 51], trifluoroacetic acid (TFA) [32, 50, 52], or ammonium phosphate [53]
This phenomenon was first described by Lemasters group [37] when APAP-induced MPTP opening and necrotic cell death in primary isolated hepatocytes was attenuated by MPTP inhibitors at early time points but not late time points where caspase activation was detected
The elevated export of GSH might reflect an adaptive response of the cell to supply cysteine via the -glutamyl cycle 6