Neural prosthesis control system is based on brain-computer interface and functional electrical stimulation technology, by an-alyzing the electroencephalograph control commands directly into the muscle system or an external device, which compensated efferent pathway from the brain-spinal cord, and recovered motor function of patients with cervical spinal cord injury. This paper described the basic structure, working principle and key technology of neural prosthetic system, summarized the application, problems and prospects of neural prosthetic technology in the rehabilitation of cervical spinal cord injury.

ObjectiveTo investigate the expression levels of forkhead box A2 (FOXA2) and forkhead box J2 (FOXJ2) in hepatocellular carcinoma (HCC) tissue and the association of FOXA2 and FOXJ2 with HCC. MethodsClinical data and pathological tissue samples were collected from 54 patients with pathologically confirmed HCC in The First Affiliated Hospital of Henan University of Traditional Chinese Medicine from January 2014 to July 2019. The immunohistochemical SP method was used to measure the protein expression levels of FOXA2 and FOXJ2 in HCC tissue, and their association with HCC-related clinicopathological features and patient prognosis was analyzed. The chi-square test and the adjusted chi-square test were used for comparison of categorical data; a Spearman correlation analysis was performed to investigate the correlation between the expression of FOXA2 and FOXJ2; the Kaplan-Meier method was used for survival analysis; Image-Pro Plus was used to perform the semi-quantitative analysis of the expression of FOXA2 and FOXJ2; the Wilcoxon rank-sum test was used for comparison between groups. ResultsThe positive rates of the protein expression of FOXA2 and FOXJ2 in HCC tissue were 70.37% (38/54) and 75.92% (41/54), respectively, and there was a significant positive correlation between the expression levels of FOXA2 and FOXJ2 (rs=0.648, P＜0.001). In both negative and positive groups, the expression level of FOXA2 was associated with tumor diameter, degree of tumor differentiation, number of tumors, and alpha-fetoprotein (χ2=5.440, 4.113, 4.352, and 3.865, P=0.020, 0.043, 0037, and 0.049), and the expression level of FOXJ2 was associated with the degree of tumor differentiation (χ2=9.267, P=0.002). The group with positive expression of FOXA2 and FOXJ2 had a significantly higher cumulative survival rate than the group with negative expression of FOXA2 and FOXJ2 (P＜0.01). ConclusionThe expression levels of FOXA2 and FOXJ2 are associated with the development, progression, and prognosis of HCC, and they have a synergistic effect in the development and progression of HCC.

Metabolic dysfunction-associated fatty liver disease （MAFLD） is a common chronic liver disease with the pathological feature of lipid accumulation in the liver， and it is closely associated with liver metabolic disorders. The latest research has shown that the pathogenesis of MAFLD is associated with the abnormal expression of specific genes， especially the fat mass and obesity-associated （FTO） gene. The abnormal activity of the FTO gene may lead to an imbalance in liver lipid metabolism， which manifests as the increase in fatty acid synthesis and the reduction in fatty acid oxidation， thereby promoting liver fat deposition and inflammatory response. Therefore， regulating the expression or activity of the FTO gene is considered one of the potential strategies for the treatment of MAFLD. At present， drug research targeting the function of the FTO gene has achieved preliminary results， and inhibition of the activity of the FTO gene can help to regulate liver lipid metabolism and alleviate liver inflammatory injury. This article reviews the mechanism of action of the FTO gene in the development and progression of MAFLD， summarizes the advances in drug research on the FTO gene and related metabolic pathways in recent years， and analyzes their application prospect in research and treatment.