文献类型：期刊文献

英文题名：Lipidomic signatures associated with cognitive impairment in type 1 diabetes mellitus: a pilot study integrating clinical serum and mouse hippocampus

作者：Min, Hang[1,2];Li, Jiayu[1,2];Wang, Jue[1,2];Su, Shan[3];Zhang, Yujie[2,4];Tian, Limin[3]

第一作者：Min, Hang

通信作者：Tian, LM[1]

机构：[1]Lanzhou Univ, Sch Clin Med 1, Lanzhou, Gansu, Peoples R China;[2]Gansu Prov Hosp, Dept Endocrinol, Lanzhou, Gansu, Peoples R China;[3]Univ Elect Sci & Technol China, Sichuan Prov Peoples Hosp, Dept Endocrinol, Chengdu, Sichuan, Peoples R China;[4]Gansu Univ Tradit Chinese Med, Clin Med Coll 1, Lanzhou, Gansu, Peoples R China

第一机构：Lanzhou Univ, Sch Clin Med 1, Lanzhou, Gansu, Peoples R China

通信机构：[1]corresponding author), Univ Elect Sci & Technol China, Sichuan Prov Peoples Hosp, Dept Endocrinol, Chengdu, Sichuan, Peoples R China.

年份：2026

卷号：24

期号：1

外文期刊名：JOURNAL OF TRANSLATIONAL MEDICINE

收录：;Scopus(收录号：2-s2.0-105044534876);WOS:【SCI-EXPANDED(收录号:WOS:001820017400005)】；

基金：This work was supported by Sichuan Province Science and Technology Support Program (2026NSFSC0502).

语种：英文

外文关键词：Cognitive impairment; Type 1 diabetes mellitus; Lipidomics

摘要：Background Cognitive impairment in Type 1 diabetes mellitus (T1DM) was linked to abnormal lipid metabolism, and its related metabolic alterations remain unclear. Lipidomics may provide novelty insights into the pathophysiology of cognitive impairment in T1DM.Methods This study aimed to explore lipidomic alterations and identify potential lipidomic signatures associated with cognitive impairment in T1DM patients and mice. In this clinical study, cognitive assessments and serum samples were obtained from T1DM patients without mild cognitive impairment (T1DM-noMCI, n = 36), T1DM patients with mild cognitive impairment (T1DM-MCI, n = 33) and healthy controls (NC, n = 32). Serum lipidomic profiles were analyzed to identify metabolites and metabolic pathways in T1DM patients. Correlation between cognitive scores and levels of differential metabolites were assessed, and the diagnostic performance of biomarkers was evaluated using receiver operator characteristic (ROC) curve. In the animal experiments, Morris water maze (MWM) tests were performed on normal control mice (NC, n = 12) and T1DM mice (n = 24). Hippocampal tissues were harvested for lipidomic analysis to detect lipid metabolic changes in T1DM mice.Results The clinical serum lipidomic patterns in T1DM-noMCI and T1DM-MCI groups were significantly different from those of HCs, and metabolite alterations between T1DM-noMCI and T1DM-MCI groups were also dramatical. Pathway enrichment analysis found that T1DM-noMCI and T1DM-MCI groups had a significant impact on glycerophospholipid metabolism. Cognitive scores were negatively related to serum levels of specific metabolites. We successfully selected 13 lipidomic biomarkers to differentiate T1DM-MCI patients, with good diagnostic efficiency. The hippocampus lipidomic patterns in T1DM mice with cognitive decline were also significantly different from those of NCs, while metabolite alterations in T1DM mice with different levels of cognitive decline were dramatically similar. Notably, the lipid metabolic pathways enriched in the hippocampus of T1DM mice showed remarkable concordance with most of those identified in the clinical serum analysis.Conclusions In this exploratory study, specific signatures in lipid metabolism, particularly glycerophospholipid metabolism, were associated with cognitive impairment in T1DM.