Abstract:Objective To analyze the changes and significance of serum lung adenocarcinoma metastasis related transcription factor-1 (malat1) and thioredoxin interacting protein (TXNIP) in patients with cognitive impairment (CI) after cerebral ischemia and stroke.Methods This study was a prospective study. 150 patients with cerebral ischemic stroke presenting to Tangshan Workers' Hospital from February 2019 to April 2021 were divided into study group (CI after cerebral ischemic stroke) and control group (CI without cerebral ischemic stroke) according to the Montreal Cognitive Assessment (MoCA) score. The levels of serum MALAT1, TXNIP, MoCA and magnetic resonance spectroscopy were compared between the two groups, Pearson was used to analyze the correlation of serum MALAT1 and TXNIP with MOCA score and magnetic resonance spectroscopy. ROC curve was used to analyze the value of serum MALAT1 and TXNIP in predicting CI.Results Of the 150 patients with cerebral ischemic stroke, 58 patients were diagnosed with cerebral ischemic stroke CI, accounting for 38.67%;Serum MALAT1 and TXNIP levels were higher in the study group than in the control group, The dimensions and total score of the MoCA scale were lower than the control group, The difference was significant (P < 0.05); NAA1/NAA2 was lower than the control group, Cho1/Cho2, LAC1/Cr2 were higher than the control group, The difference was significant (P < 0.05); Serum MALAT1, TXNIP levels and total MoCA scores in patients after cerebral ischemic stroke (r = -0.623 and -0.512, all P = 0.000), NAA1/NAA2 (r = -0.459 and -0.413, all P = 0.000) showed a negative correlation (P < 0.05), With Cho1/Cho2 (r = 0.569 and 0.496, all P = 0.000), LAC1/Cr2 (r = 0.523 and 0.475, all P = 0.000) showed a positive correlation (P < 0.05); Mapping the ROC results shows that, Serum MALAT1, TXNIP and the combined AUC for predicting CI after cerebral ischemic stroke were 0.860 (95% CI: 0.796, 0.924), 0.780 (95% CI: 0.703, 0.856), 0.890 (95% CI: 0.834, 0.945), Sensitivity was 0.867 (95% CI: 0.776, 0.933), 0.783 (95% CI: 0.711, 0.863), 0.902 (95% CI: 0.839, 0.951), Speciality is 0.797 (95% CI: 0.702, 0.869), 0.712 (95% CI: 0.612, 0.798), 0.851 (95% CI: 0.736, 0.915) .Conclusion The levels of serum MALAT1 and TXNIP are highly expressed in CI patients after cerebral ischemic stroke. The level of MALAT1 and TXNIP are closely related to the cognitive function and the level of magnetic resonance spectroscopy.