Objectives: There is a lot of evidence that oxidative stress plays a role in the etiology of aging. PON-1 is mostly complexed to HDL and is responsible for its antioxidant properties. This investigation was undertaken to assess age-dependent changes in plasma PON-1 concentration and its association with age, HDL, BMI, and duration of diabetes among T2DM patients.
Methods: This study was carried out on 125 clinically diagnosed T2DM patients (young and middle-aged) attending the OPD and IPD of Rohilkh and Medical College and Hospital. Laboratory investigations such as fasting plasma glucose (FPG), HbA1c, and plasma PON-1 were measured.
Results: When compared with young patients, middle-aged patients showed a significantly declined plasma PON-1 (p < 0.01) and HDL (p < 0.05) levels and increased BMI (p < 0.05). The young and middle-aged patients showed a negative correlation of PON-1 with BMI (p < 0.01), duration of diabetes (p < 0.01), and a positive correlation with HDL (p < 0.01). However, only middle-aged diabetic patients showed a significant correlation of PON-1 with FPG (p < 0.01) and HbA1c (p < 0.01).
Conclusion: Decreased PON-1 concentration in middle-aged patients might be due to a decrease in HDL levels as a consequence of oxidative stress since PON-1 is mainly complexed to HDL.
