Ascorbic acid and protein glycation in vitro.
The aim of the study was to compare the effects of ascorbic acid (AA) in vitro in the absence and in the presence of cell-dependent recycling. In a cell-free system, AA enhanced glycoxidation of bovine serum albumin (BSA) by glucose and induced BSA glycation in the absence of sugars. On the other hand, AA did not affect erythrocyte hemolysis, glycation of hemoglobin and erythrocyte membranes, and inactivation of catalase, protected against inactivation of acetylcholinesterase of erythrocytes incubated with high glucose concentrations and enhanced the loss of glutathione. These results can be explained by assumption that AA acts as a proglycating agent in the absence of recycling while is an antiglycating agent when metabolic recycling occurs.
['Sadowska-Bartosz|Izabela|I|', 'Bartosz|Grzegorz|G|']
D000818:Animals D001205:Ascorbic Acid D002417:Cattle D002474:Cell-Free System D004797:Enzyme-Linked Immunosorbent Assay D006031:Glycosylation D012710:Serum Albumin, Bovine
Ascorbic acid Glycation Bovine serum albumin Erythrocyte Antioxidant