PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 1365846-1 1992 In healthy people the plasma malondialdehyde increases with age, however there is a simultaneous rise in the activities of glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase in red blood cells, although both enzymes show a biphasic behaviour, that is, reaching the lowest values at 40-50 years of age to rise remarkably later on. Malondialdehyde 29-44 glucose-6-phosphate dehydrogenase Homo sapiens 123-156 1365846-3 1992 The activity of glutathione reductase shows a clear increase depending on age, up to middle age, with or without flavin adenine dinucleotide. Flavin-Adenine Dinucleotide 113-140 glutathione-disulfide reductase Homo sapiens 16-37