Hyperlipidemia and intestinal microflora distributions among flying personnel / 预防医学

ABSTRACT

Objective@#To investigate the characteristics of intestinal microflora among flying personnel with hyperlipidemia, so as to provide insights into prevention of hyperlipidemia among flying personnel. @*Methods @#Flying personnel diagnosed with hyperlipidemia in a sanatiorium from October 2020 to February 2021 were included in the hyperlipidemia group, while flying personnel with normal blood lipids during the same period served as controls. Subjects' age, family history, physical examinations and blood testing results were collected from both groups. Fecal samples were collected, and intestinal microflora was sequenced followed by bioinformatics analysis. The diversity and abundance of intestinal microflora were compared, and the key bacteria were screened using LEfSe analysis.@*Results@#There were 29 subjects in the hyperlipidemia group with a median age (interquartile range) of 34 (12) years and 25 subjects in the control group with a median age (interquartile range) of 30 (12) years, and all subjects were men. There were no significant differences between the two groups in terms of age, flight duration, smoking, family history of metabolic diseases and waist circumference (P>0.05). The Shannon diversity index of intestinal microflora was lower in the hyperlipidemia group than in the control group (Z=4.370, P=0.026), and there was a significant difference in the overall structure of intestinal flora between the two groups, which were clustered into two groups. LEfSe analysis identified Herbaspirillum, Atopobium and Eggerthella as key microorganisms in the hyperlipidemia group, and Agathobacter, Dialister, norank_Eubacterium_coprostanoligenes_group, Alloprevotella and unclassified Bacteroidales as key microorganisms in the control group.@*Conclusions@#The species diversity and relative abundance of intestinal microflora are lower in flying personnel with hyperlipidemia than in those with normal blood lipids. Herbaspirillum, Atopobium and Eggerthella may be the key bacteria contributing to hyperlipidemia among flying personnel.