ABSTRACT
Oxidative stress damage is known to be a major factor leading to many diseases. Mesenchymal stem cellderived exosomes (MSC-exos) are enriched with various proteins, lipids, coding RNAs and non-coding RNAs, and alleviate oxidative stress damage and stimulate the regeneration response of damaged tissues and cells. MSC-exos hold a great potential for the treatment of diseases caused by oxidative stress. In this review, we summarized the research progress of MSC-exos in cardiovascular injury, lung injury, kidney injury and liver cell injury caused by oxidative stress.
ABSTRACT
Objective To estimate the degree of oxidative stress and atherosclerosis praecox in patients with systemic lupus erythematosus (SLE), and emphasize on exploring AOPPs' clinical significance in premature atherosclerosis in SLE. Methods The levels of AOPPs, Hey, MDA, SOD, baPMV and CIMT were detected by ELISA and spectropholometry in 44 non-menopausal female SLE patients and 31 healthy middle-aged women respectively, and baPWV. The results were compared with AOPPs of the two groups. Then each group was stratified based on disease duration (≥5 years or <5 years) and the disease activity(active and inactive) in SLE patients. The patients' TC, TG, LDL were analyzed. T test, t' test and Pearson correla-tion were selected. Results The levels of AOPPs, Hcy, MDA in SLE patients were significantly higher than those of the healthy controls (P<0.05). The activities of SOD were lower than controls (P<0.05). The levels of AOPPs, Hcy, MDA, SOD had statistical significance between SLE patients disease duration ≥5 years or <5 years, active or inactive groups. There were two cases with CAP in patients with SLE (more than 5 years disease duration),while there wasnone in healthy controls. The levels of baPWV and CIMT in patients with SLE were higher than healthy controls (P<0.05), and had statistical significance in SLE patients disease duration more than or less than 5 years (P<0.05). The oxidative stress targets (AOPPs, Hey, MDA, SOD) had significant correlation with the level of baPWV and CIMT (P<0.01). The level of serum AOPPs had significant positive correlation with the levels of Hcy, TC, TG and LDL (P<0.01～0.05). Conclusion SLE patients have increased oxidative stress , and significantly higher prevalence of atherosclerosis than healthy controls. The disease duration and oxidative stress play important roles in the duration of atherosclerosis. AOPPs probably involves in the accelerated atherosclerosis of SLE patients. It may be a predictor for SLE complicated with atherosclerosis praecox.