APOB and hypertriglyceridemia: Apo-A1 negatively correlated with TOS, OSI and CD–mainly in the subgroup of patients with hypertriglyceridemia and, surprisingly, positively with 4-HNE–mainly in former smoking patients, while Apo-B:Apo-A1 ratio correlated positively with parameters of oxidative stress (TOS and OSI) and negatively with 4-HNE, but only in formerly smoking patients.