1.Integrated analysis of gene crosstalk in non-alcoholic fatty liver disease and athero-sclerosis
Siyu MENG ; Tianyi NI ; Jin GENG ; Peibing GE ; Bingjian WANG
Chinese Journal of Arteriosclerosis 2024;32(7):573-582
Aim To investigate the shared transcriptional characteristics of non-alcoholic fatty liver disease(NAFLD)and atherosclerosis(As)using bioinformatics techniques.The goal is to identify potential mechanisms and key targets of As that are linked to NAFLD through gene crosstalk analysis of both diseases.Additionally,the study will validate the expression levels of these key targets in animal tissues and human serum samples.Methods The gene ex-pression profiles of NAFLD(dataset GSE89632)and As(dataset GSE43292)were obtained from GEO database.Differ-ential gene analysis and weighted gene co-expression network analysis were conducted to identify common genes between the two diseases.These shared genes were further analyzed using the String database for protein interaction analysis and R software.Core genes were identified through calculations in Cytoscape software,validation with external datasets(GSE100927),and machine learning techniques(LASSO regression).Finally,key core genes were determined by crea-ting nonalcoholic fatty liver and As mouse models on a high-fat diet and collecting peripheral serum samples from patients with NAFLD and coronary heart disease(CHD).Results Seventy-five shared genes were identified between the two diseases,with major enrichment pathways including cytokine-cytokine receptor interaction,IL-17 signaling pathway,lipid and atherosclerosis,and NF-κB signaling pathway.Through integration of multiple bioinformatics methods,two core genes(MMP-9 and CCL3)were identified.Subsequent animal experiments demonstrated a significant increase in MMP-9 and CCL3 levels in the liver and aortic sinus of mice fed with high-fat diet,MMP-9 and CCL3 levels in the liver tissue of high-fat diet-fed mice were 2.43 times(P<0.001)and 1.35 times(P<0.01)higher than the control group,in the aortic sinus tissue,MMP-9 and CCL3 levels were 2.10 times(P<0.001)and 1.58 times(P<0.01)higher.Human serum sample verification further supported these findings,showing MMP-9 and CCL3 levels in patients with both NAFLD and CHD to be 1.21 times(P<0.01)and 1.29 times(P<0.01)higher than in patients with CHD alone.Conclusion This study identified MMP-9 and CCL3 may play key roles in NAFLD-related As,providing potential targets for the study of NAFLD-related As.
2.Clinical value of free-talk language functional cortex mapping methods based on high frequency response in epileptogenic focus resection
Xin GAO ; Xiaoxia ZHOU ; Jianbin WEN ; Tianyi ZHOU ; Duanyu NI ; Liang QIAO ; Xueyuan WANG ; Xiaohua ZHANG ; Xiaoli LI ; Tao YU
Chinese Journal of Neuromedicine 2021;20(10):989-995
Objective:To investigate the clinical value of free-talk language functional cortex mapping methods based on high frequency response in epileptic foci resection.Methods:Twenty patients with intractable epilepsy admitted to our hospital from January 2016 to May 2019 were chosen in our study. According to the different intraoperative mapping methods of language functional region, these patients were divided into test group ( n=10, using free-talk language function localization based on high frequency response [new method]+ electrical cortical stimulation [ECS]) and control group ( n=10, using ECS localization only). The overlap rate of the two methods in the test group were calculated and the postoperative follow-up results of patients in the two groups were analyzed. Results:In 10 patients from the test group, 33 positive loci in the Broca's area and 33 positive loci in the Wernicke's area were detected by new method; at the meantime, 16 positive loci in the Broca's area and 8 positive loci in the Wernicke's area were detected by ECS method, which had a overlap rate of 93.75% (15/16) in the Broca's area and 75.00% (6/8) in the Wernicke's area, respectively, as compared with the new method. In the 10 patients from the control group, 18 positive loci in the Broca's area and 3 positive loci in the Wernicke's area were detected by ECS method. In the test group, 7 patients achieved Engel grading I and 2 patients developed transient language function impairment after surgery; while in the control group, 5 patients achieved Engel grading I and 4 patients developed transient language function impairment after surgery.Conclusion:The new method has a high overlap rate with ECS method; the combination of the two methods can help to decrease the speech function impairment after excision of epileptogenic foci in patients with epilepsy.