Ferroptosis is a newly discovered regulatory mode of cell death, which is caused by glutathione peroxidase 4 deficiency, abnormal iron metabolism and lipid peroxidation.At present, it is considered that iron metabolism and active oxygen metabolism are the central link of ferroptosis.Ferroptosis involves a variety of physiological and pathological processes, including cancer cell death, neurotoxicity, ischemia-reperfusion injury, and T-cell immunity.Studies have shown that ferroptosis characteristics such as iron overload and lipid peroxidation may occur in different degrees during the development of a variety of nephropathy.Ferroptosis can affect the progression of renal disease by regulating the level of intracellular iron ions and lipid peroxidation.Therefore, effective regulation of ferroptosis is expected to be an important strategy in the treatment of renal diseases.In this paper, the regulation mechanism of ferroptosis and its research progress in kidney disease are reviewed to provide new theories and ideas for the treatment of renal disease.

Objective To evaluate the efficacy and safety of higenamine hydrochloride(HG) stress echocardiography for diagnosis of coronary artery disease (CAD). Methods The study was designed as prospective,randomized,open-labled,positively controlled and crossover phase II multi-center clinical research.Ninety subjects who were suspected to have CAD were enrolled.HG dosage was titrated at 0.5,1, 2,4 μg.kg -1.min-1every 3 min.Adenosine was injected 140 μg.kg -1.min-1for 6 min with total dosage 0.8 mg/kg.Visual assessment of the left ventricle wall motionand 17-segment model were used for analysis of stress echocardiography.CAD was defined as identifying >50% diameter stenosis in at least one major coronary artery by coronary angiogram.All adverse reaction were recorded. Results For HG group,the sensitivity,specificity,accuracy,positive predictive value and negative predictive value were 28.9%,89.7%, 57.1%,76.5% and 47.8%,respectively;for adenosine group,they were 26.7%,94.9%,58.3%,85.7%and 47.1%,respectively. There was no significant difference between the two groups( P > 0.05). The diagnostic sensitivities of HG and adenosine echocardiography for single vessel stenosis were 11.1% and 5.6%,respectively( P >0.05).Both HG and adenosine echocardiography have the same sensitivity with 37.5% for double vessel stenosis and 44.4% for triple vessel stenosis.Advers reaction rate was 84.4% in HG group and 92.2% in adenosine group( P >0.05).Conclusions HG stress echocardiography for CAD diagnosis has high specificity,good safety and low sensitivity,which are similar to adenosine echo.