PMID- 36105024 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220917 IS - 1943-8141 (Print) IS - 1943-8141 (Electronic) IS - 1943-8141 (Linking) VI - 14 IP - 8 DP - 2022 TI - Candidate metabolite markers of peripheral neuropathy in Chinese patients with type 2 diabetes. PG - 5420-5440 AB - OBJECTIVES: To analyze the serum and urine metabolites present in type 2 diabetes mellitus (T2DM) patients and T2DM patients with diabetic peripheral neuropathy (DPN) and to select differentially expressed biomarkers for early diagnosis of DPN. METHODS: Serum and urine metabolites from 74 T2DM patients with peripheral neuropathy and 41 without peripheral neuropathy were analyzed using gas chromatograph system with time-of-flight mass spectrometer metabolomics to detect biomarkers of peripheral neuropathy in T2DM. RESULTS: There were increased serum triglycerides, alanine aminotransferase, and decreased C-peptide, and total cholesterol levels in T2DM patients with DPN compared to those without peripheral neuropathy. Metabolomic analysis revealed visible differences in metabolic characteristics between two groups, and overall 53 serum differential metabolites and 56 urine differential metabolites were identified with variable influence on projection (VIP) >1 and P<0.05. To further analyze the correlation between the identified metabolites and DPN, four serum metabolites and six urine metabolites were selected with VIP>2, and fold change (FC) >1, including serum beta-alanine, caproic acid, beta-alanine/L-aspartic acid, and L-arabinose/L-arabitol, and urine gluconic acid, erythritol, galactonic acid, guanidoacetic acid, cytidine, and aminoadipic acid. Furthermore, five serum biomarkers and six urine biomarkers were found to show significant changes (P<0.05, VIP>1, and FC>1) respectively in patients with mild, moderate, and severe DPN. In addition, we found that glyoxylate and dicarboxylate metabolism was a differential metabolic pathway not only between T2DM and DPN, but also among different degrees of DPN. The differential metabolites such as beta-alanine and caproic acid are expected to be biomarkers for DPN patients, and the significant changes in glyoxylate and dicarboxylate metabolism may be related to the pathogenesis of DPN. CONCLUSION: There were serum and urine spectrum metabolomic differences in patients with DPN, which could serve as biomarkers for T2DM and DPN patients. CI - AJTR Copyright (c) 2022. FAU - Shao, Ming-Mei AU - Shao MM AD - Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203, China. AD - Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200032, China. FAU - Xiang, Hong-Jiao AU - Xiang HJ AD - Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203, China. AD - Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200032, China. FAU - Lu, Hao AU - Lu H AD - Department of Endocrinology and Metabolism, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine Shanghai 201203, China. FAU - Yin, Pei-Hao AU - Yin PH AD - Putuo Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200062, China. FAU - Li, Guo-Wen AU - Li GW AD - Pharmacy Department, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200071, China. FAU - Wang, Yun-Man AU - Wang YM AD - Putuo Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200062, China. FAU - Chen, Lin AU - Chen L AD - Putuo Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200062, China. FAU - Chen, Qing-Guang AU - Chen QG AD - Department of Endocrinology and Metabolism, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine Shanghai 201203, China. FAU - Zhao, Cheng AU - Zhao C AD - Pharmacy Department, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200071, China. FAU - Lu, Qun AU - Lu Q AD - Pharmacy Department, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200071, China. FAU - Wu, Tao AU - Wu T AD - Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine Shanghai 201203, China. AD - Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200032, China. FAU - Ji, Guang AU - Ji G AD - Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine Shanghai 200032, China. LA - eng PT - Journal Article DEP - 20220815 PL - United States TA - Am J Transl Res JT - American journal of translational research JID - 101493030 PMC - PMC9452362 OTO - NOTNLM OT - Type 2 diabetes mellitus OT - diabetic peripheral neuropathy OT - gas chromatograph system with time-of-flight mass spectrometer OT - metabolomics COIS- None. EDAT- 2022/09/16 06:00 MHDA- 2022/09/16 06:01 PMCR- 2022/08/15 CRDT- 2022/09/15 02:14 PHST- 2022/04/23 00:00 [received] PHST- 2022/07/17 00:00 [accepted] PHST- 2022/09/15 02:14 [entrez] PHST- 2022/09/16 06:00 [pubmed] PHST- 2022/09/16 06:01 [medline] PHST- 2022/08/15 00:00 [pmc-release] PST - epublish SO - Am J Transl Res. 2022 Aug 15;14(8):5420-5440. eCollection 2022.