Oral glucose tolerance test unravels circulating miRNAs associated with insulin resistance in obese preschoolers

A. Masotti, A. Baldassarre, M. Fabrizi, G. Olivero, M. C. Loreti, P. Giammaria, P. Veronelli, M. P. Graziani, M. Manco

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Background: Circulating microRNAs (miRNAs) may act as biomarkers of metabolic disturbances. Objective: The aim of this study was to identify serum miRNAs signature of early insulin resistance in obese preschoolers. Methods: Twelve obese children, aged 2-6years, six insulin resistant (IR) and six controls were selected being age-matched, sex-matched and body mass index-matched. Profiling of 179 circulating miRNAs, known to be widely expressed in the bloodstream, was investigated by quantitative polymerase chain reaction at fasting and 120min following a standard oral glucose tolerance test (OGTT). Results: Twenty-one miRNAs were differentially regulated in IR obese preschoolers. miR-200c-3p, miR-190a and miR-95 were differently regulated both at fasting and 120min after the OGTT. In controls, the fold changes of some miRNAs were correlated with Δglucose0-120 (miR-660, miR-26b-5p and miR-22-3p: p=0.005 for all) and Δinsulin0-120 (miR-660 and miR-22-3p: p=0.02 for both and miR-423-5p: p=0.042). In IR patients, miR-1 fold changes were correlated with Δglucose0-120 (r=-0.786; p=0.036) and Δinsulin0-120 (r=-0.821; p=0.023). Conclusions: Our study identifies circulating miR-200c-3p, miR-190a and miR-95 as biomarkers of insulin resistance in obese preschoolers, being differentially regulated in IR patients both in fasting condition and after the OGTT. Expression of some circulating miRNAs seems reflecting glucose and insulin excursion following the OGTT differently in controls and IR obese preschoolers.

Original languageEnglish
JournalPediatric obesity
DOIs
Publication statusAccepted/In press - 2016

Fingerprint

Glucose Tolerance Test
MicroRNAs
Insulin Resistance
Insulin
Fasting
Biomarkers
Body Mass Index
Glucose
Polymerase Chain Reaction
Serum

Keywords

  • Insulin resistance
  • MicroRNAs
  • Obesity
  • OGTT
  • Preschooler

ASJC Scopus subject areas

  • Health Policy
  • Pediatrics, Perinatology, and Child Health
  • Public Health, Environmental and Occupational Health
  • Nutrition and Dietetics

Cite this

Oral glucose tolerance test unravels circulating miRNAs associated with insulin resistance in obese preschoolers. / Masotti, A.; Baldassarre, A.; Fabrizi, M.; Olivero, G.; Loreti, M. C.; Giammaria, P.; Veronelli, P.; Graziani, M. P.; Manco, M.

In: Pediatric obesity, 2016.

Research output: Contribution to journalArticle

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abstract = "Background: Circulating microRNAs (miRNAs) may act as biomarkers of metabolic disturbances. Objective: The aim of this study was to identify serum miRNAs signature of early insulin resistance in obese preschoolers. Methods: Twelve obese children, aged 2-6years, six insulin resistant (IR) and six controls were selected being age-matched, sex-matched and body mass index-matched. Profiling of 179 circulating miRNAs, known to be widely expressed in the bloodstream, was investigated by quantitative polymerase chain reaction at fasting and 120min following a standard oral glucose tolerance test (OGTT). Results: Twenty-one miRNAs were differentially regulated in IR obese preschoolers. miR-200c-3p, miR-190a and miR-95 were differently regulated both at fasting and 120min after the OGTT. In controls, the fold changes of some miRNAs were correlated with Δglucose0-120 (miR-660, miR-26b-5p and miR-22-3p: p=0.005 for all) and Δinsulin0-120 (miR-660 and miR-22-3p: p=0.02 for both and miR-423-5p: p=0.042). In IR patients, miR-1 fold changes were correlated with Δglucose0-120 (r=-0.786; p=0.036) and Δinsulin0-120 (r=-0.821; p=0.023). Conclusions: Our study identifies circulating miR-200c-3p, miR-190a and miR-95 as biomarkers of insulin resistance in obese preschoolers, being differentially regulated in IR patients both in fasting condition and after the OGTT. Expression of some circulating miRNAs seems reflecting glucose and insulin excursion following the OGTT differently in controls and IR obese preschoolers.",
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T1 - Oral glucose tolerance test unravels circulating miRNAs associated with insulin resistance in obese preschoolers

AU - Masotti, A.

AU - Baldassarre, A.

AU - Fabrizi, M.

AU - Olivero, G.

AU - Loreti, M. C.

AU - Giammaria, P.

AU - Veronelli, P.

AU - Graziani, M. P.

AU - Manco, M.

PY - 2016

Y1 - 2016

N2 - Background: Circulating microRNAs (miRNAs) may act as biomarkers of metabolic disturbances. Objective: The aim of this study was to identify serum miRNAs signature of early insulin resistance in obese preschoolers. Methods: Twelve obese children, aged 2-6years, six insulin resistant (IR) and six controls were selected being age-matched, sex-matched and body mass index-matched. Profiling of 179 circulating miRNAs, known to be widely expressed in the bloodstream, was investigated by quantitative polymerase chain reaction at fasting and 120min following a standard oral glucose tolerance test (OGTT). Results: Twenty-one miRNAs were differentially regulated in IR obese preschoolers. miR-200c-3p, miR-190a and miR-95 were differently regulated both at fasting and 120min after the OGTT. In controls, the fold changes of some miRNAs were correlated with Δglucose0-120 (miR-660, miR-26b-5p and miR-22-3p: p=0.005 for all) and Δinsulin0-120 (miR-660 and miR-22-3p: p=0.02 for both and miR-423-5p: p=0.042). In IR patients, miR-1 fold changes were correlated with Δglucose0-120 (r=-0.786; p=0.036) and Δinsulin0-120 (r=-0.821; p=0.023). Conclusions: Our study identifies circulating miR-200c-3p, miR-190a and miR-95 as biomarkers of insulin resistance in obese preschoolers, being differentially regulated in IR patients both in fasting condition and after the OGTT. Expression of some circulating miRNAs seems reflecting glucose and insulin excursion following the OGTT differently in controls and IR obese preschoolers.

AB - Background: Circulating microRNAs (miRNAs) may act as biomarkers of metabolic disturbances. Objective: The aim of this study was to identify serum miRNAs signature of early insulin resistance in obese preschoolers. Methods: Twelve obese children, aged 2-6years, six insulin resistant (IR) and six controls were selected being age-matched, sex-matched and body mass index-matched. Profiling of 179 circulating miRNAs, known to be widely expressed in the bloodstream, was investigated by quantitative polymerase chain reaction at fasting and 120min following a standard oral glucose tolerance test (OGTT). Results: Twenty-one miRNAs were differentially regulated in IR obese preschoolers. miR-200c-3p, miR-190a and miR-95 were differently regulated both at fasting and 120min after the OGTT. In controls, the fold changes of some miRNAs were correlated with Δglucose0-120 (miR-660, miR-26b-5p and miR-22-3p: p=0.005 for all) and Δinsulin0-120 (miR-660 and miR-22-3p: p=0.02 for both and miR-423-5p: p=0.042). In IR patients, miR-1 fold changes were correlated with Δglucose0-120 (r=-0.786; p=0.036) and Δinsulin0-120 (r=-0.821; p=0.023). Conclusions: Our study identifies circulating miR-200c-3p, miR-190a and miR-95 as biomarkers of insulin resistance in obese preschoolers, being differentially regulated in IR patients both in fasting condition and after the OGTT. Expression of some circulating miRNAs seems reflecting glucose and insulin excursion following the OGTT differently in controls and IR obese preschoolers.

KW - Insulin resistance

KW - MicroRNAs

KW - Obesity

KW - OGTT

KW - Preschooler

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U2 - 10.1111/ijpo.12133

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