The serum metabolomic profile in elderly overweight patients with metabolic syndrome / 中华老年医学杂志

ABSTRACT

Objective:To examine differences in metabolic characteristics and metabolites between elderly overweight patients with metabolic syndrome and healthy elderly people, and to identify related factors.Methods:A group of 36 MS patients(the MS group)admitted to The Fourth Central Hospital of Tianjin from April to August 2018 and 43 elderly people(the control group)who underwent physical examination during the same period were included in this prospective study.Serum samples of the patients with metabolic syndrome and elderly healthy controls were collected, and ultra-performance liquid chromatography and quadrupole time-of-flight mass spectrometry(UPLC-Q-TOF/MS)based non-targeted metabolomics was used to search for differences in metabolites between the serum samples of the two groups.The Pearson correlation statistical method was used to find related clinical factors.Results:Comparison of baseline data of the enrolled participants showed that there were statistically significant differences between the two groups in body mass index[(26.9±2.0)kg/m 2vs.(21.7±1.4)kg/m 2], waist circumference, systolic blood pressure, fasting blood glucose, triglycerides and high-density lipoprotein cholesterol( P<0.01). Metabolomics results showed that there were differences in 65 serum metabolites between elderly overweight patients with metabolic syndrome and elderly normal controls, and these differences were enriched in 21 pathways.Correlation analysis showed that waist circumference had the largest number of differential metabolites, followed by body mass index.The major differential metabolites were monosaccharides such as mannose, lyxose and glucose, linolenic acid and its derivatives, and pyroglutamate. Conclusions:Compared with normal elderly people, elderly patients with overweight metabolic syndrome have a variety of differential metabolites, and these metabolites are highly correlated with clinical indicators related to overweight, such as body mass index and waist circumference, and they include monosaccharides, linolenic acid derivatives and amino acids.