Insulin Resistance Prior to Term Age in Very Low Birthweight Infants: a Prospective Study

Overview

Journal BMJ Paediatr Open

Publisher BMJ Publishing Group

Specialty Pediatrics

Date 2024 Feb 10

PMID 38341196

Authors

Itay Zamir

Elisabeth Stoltz Sjostrom

Johannes van den Berg

Estelle Naumburg

Magnus Domellof

Affiliations

Soon will be listed here.

Abstract

Objective: To explore the glucose-related hormone profile of very low birthweight (VLBW) infants and assess the association between neonatal hyperglycaemia and insulin resistance during the admission period.

Design: A prospective observational study-the Very Low Birth Weight Infants, Glucose and Hormonal Profiles over Time study.

Setting: A tertiary neonatal intensive care unit and four neonatal units in county hospitals in Sweden.

Patients: 48 infants born <1500 g (VLBW) during 2016-2019.

Outcome Measures: Plasma concentrations of glucose-related hormones and proteins (C-peptide, insulin, ghrelin, glucagon-like peptide 1 (GLP-1), glucagon, leptin, resistin and proinsulin), insulin:C-peptide and proinsulin:insulin ratios, Homoeostatic Model Assessment 2 (HOMA2) and Quantitative Insulin Sensitivity Check (QUICKI) indices, measured on day of life (DOL) 7 and at postmenstrual age 36 weeks.

Results: Lower gestational age was significantly associated with higher glucose, C-peptide, insulin, proinsulin, leptin, ghrelin, resistin and GLP-1 concentrations, increased HOMA2 index, and decreased QUICKI index and proinsulin:insulin ratio. Hyperglycaemic infants had significantly higher glucose, C-peptide, insulin, leptin and proinsulin concentrations, and lower QUICKI index, than normoglycaemic infants. Higher glucose and proinsulin concentrations and insulin:C-peptide ratio, and lower QUICKI index on DOL 7 were significantly associated with longer duration of hyperglycaemia during the admission period.

Conclusions: VLBW infants seem to have a hormone profile consistent with insulin resistance. Lower gestational age and hyperglycaemia are associated with higher concentrations of insulin resistance markers.

Citing Articles

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