Trifluoroethanol Increases Albumin’s Susceptibility to Chemical Modification
Document Type
Article
Publication Title
Archives of Biochemistry and Biophysics
Abstract
Acrolein-dependent chemical modification is implicated in the etiology of postoperative cognitive dysfunction (POCD). We examined this process further using human serum albumin (HSA), which is a target of acrolein modification and contains anesthetic binding sites. We tested whether trifluoroethanol (TFE), which mimics inhaled anesthetics, affects the susceptibility of HSA to modification by acrolein. We observed that acrolein promoted the formation of fluorescent adducts. TFE (10%) increased the amount of acrolein-HSA adducts. TFE (40%) caused a 5-fold increase in adduct formation. Acrolein also increased tryptophan anisotropy of HSA, which was further increased by TFE (10%). Acrolein-induced protein cross-linking was also increased in the presence of TFE (40%). These observations suggest that TFE promotes acrolein-induced modification of HSA, supporting a putative mechanism for POCD.
DOI
10.1016/j.abb.2008.09.009
Publication Date
12-2008
ISSN
1096-0384
Recommended Citation
Craig HD, Eklund JD, Seidler NW. Trifluoroethanol Increases Albumin’s Susceptibility to Chemical Modification. Archives of Biochemistry and Biophysics. 2008; 480(1). doi: 10.1016/j.abb.2008.09.009.
