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The metabolic footprint of compromised insulin sensitivity under fasting and hyperinsulinemic-euglycemic clamp conditions in an Arab population.

Abstract：

:Metabolic pathways that are corrupted at early stages of insulin resistance (IR) remain elusive. This study investigates changes in body metabolism in clinically healthy and otherwise asymptomatic subjects that may become apparent already under compromised insulin sensitivity (IS) and prior to IR. 47 clinically healthy Arab male subjects with a broad range of IS, determined by hyperinsulinemic-euglycemic clamp (HIEC), were investigated. Untargeted metabolomics and complex lipidomics were conducted on serum samples collected under fasting and HIEC conditions. Linear models were used to identify associations between metabolites concentrations and IS levels. Among 1896 identified metabolites, 551 showed significant differences between fasting and HIEC, reflecting the metabolic switch in energy utilization. At fasting, 336 metabolites, predominantly di- and tri-acylglycerols, showed significant differences between subjects with low and high levels of IS. Changes in amino acid, carbohydrate and fatty acid metabolism in response to insulin were impaired in subjects with low IS. Association of altered mannose and amino acids with IS was also replicated in an independent cohort of T2D patients. We identified metabolic phenotypes that characterize clinically healthy Arab subjects with low levels of IS at their fasting state. Our study is providing further insights into the metabolic pathways that precede IR.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Halama A,Suleiman NN,Kulinski M,Bettahi I,Hassoun S,Alkasem M,Abdalhakam I,Iskandarani A,Samra TA,Atkin SL,Suhre K,Abou-Samra AB

doi

10.1038/s41598-020-73723-8

subject

Has Abstract

pub_date

2020-10-13 00:00:00

pages

17164

issue

1

issn

2045-2322

pii

10.1038/s41598-020-73723-8

journal_volume

10

pub_type

杂志文章

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