Nonalcoholic fatty liver disease (NAFLD) is the result of the interaction between many factors, and “second hit” focusing on oxidative stress is a key factor for the progression of NAFLD. Autophagy has been a research hotspot in recent years, and more and more studies have shown that autophagy plays an important role in lipid metabolism in hepatocytes, inflammatory response, and liver fibrosis and is closely associated with oxidative stress. With reference to the latest research findings in China and foreign countries, this article analyzes the interrelation between autophagy and oxidative stress in the pathogenesis of NAFLD from the aspects of the association between autophagy and NAFLD and the association between oxidative stress and NAFLD. It is pointed out that the molecular mechanism of the regulation of oxidative stress by autophagy in the pathogenesis of NAFLD may be a research hotspot in future, and blockade or activation of a key pathway involved in the regulation of oxidative stress by autophagy may provide a new method for the treatment of NAFLD.

Objective: To explore deep vein thrombosis (DVT) occurrence in patients after right heart catheterization and the effect of anticoagulant therapy. Methods: A total of 171 consecutive patients with electrophysiological study (EPS) and/or radiofrequency catheter ablation (RFCA) in our hospital from 2015-01 to 2016-05 were enrolled. All patients had supra-ventricular tachycardia and completed a venous surgery, they were randomly divided into 2 groups: Anticoagulation group,n=87 and Non-anticoagulation group,n=84. Lower extremity vascular Doppler ultrasonography was performed at (24-48) h post-operation to compare the incidence of DVT between 2 groups. Results: There were 13/171 patients were excluded for not completing post-operative lower extremity vascular Doppler ultrasonography including 9 patients in Anticoagulation group and 4 in Non-anticoagulation group. 158 patients finished post-operative examination and follow-up study. Anticoagulation group had 7/78 (8.97%) patients suffered from DVT, Non-anticoagulation group had 41/80 (51.3%) patients suffered from DVT,P<0.001. Conclusion: The incidence of DVT was higher after right heart catheterization without anticoagulation; heparin treatment may reduce DVT occurrence in relevant patients.