Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Profiling of Insulin-like Growth Factor Binding Proteins (IGFBPs) in Obesity and Their Association with Ox-LDL and Hs-CRP in Adolescents

Version 1 : Received: 28 March 2021 / Approved: 29 March 2021 / Online: 29 March 2021 (16:33:20 CEST)

A peer-reviewed article of this Preprint also exists.

Rahman A, Hammad MM, Al Khairi I, Cherian P, Al-Sabah R, Al-Mulla F, Abu-Farha M and Abubaker J (2021) Profiling of Insulin-Like Growth Factor Binding Proteins (IGFBPs) in Obesity and Their Association With Ox-LDL and Hs-CRP in Adolescents. Front. Endocrinol. 12:727004. doi: 10.3389/fendo.2021.727004 Rahman A, Hammad MM, Al Khairi I, Cherian P, Al-Sabah R, Al-Mulla F, Abu-Farha M and Abubaker J (2021) Profiling of Insulin-Like Growth Factor Binding Proteins (IGFBPs) in Obesity and Their Association With Ox-LDL and Hs-CRP in Adolescents. Front. Endocrinol. 12:727004. doi: 10.3389/fendo.2021.727004

Abstract

Insulin-like growth factor binding proteins (IGFBPs) are critical modulators of the metabolism. In adults, IGFBPs are associated with obesity and insulin resistance but the association of IGFBPs with metabolic homeostasis in children and adolescents is not fully characterized. In this study we investigated the association of plasma IGFBPs (IGFBP-1, 3 and 7) with weight status, central adiposity and cardiovascular disease markers Hs-CRP and Ox-LDL. A total of 420 adolescents (age 11-14 years) were randomly recruited from public middle schools in Kuwait. IGFBPs were measured using bead-based multiplexing while Hs-CRP and Ox-LDL were measured using ELISA. IGFBP-1 levels were significantly lower in obese and overweight participants compared to normal weight children. Only IGFBP-1 was negatively associated with waist circumference to height (WC/Ht) ratio. IGFBP-1 was negatively correlated with Hs-CRP while IGFBP-3 and IGFBP-7 were negatively correlated with Ox-LDL. These data demonstrate a robust negative association of IGFBP-1, but not IGFBP-3 or -7, with overweight and obesity, and the inflammation marker Hs-CRP. Central adiposity (WC/Ht ratio) was a stronger predictor of IGFBP-1 than BMI-for-age z-score. IGFBP-1 could thus be used as a sensitive predictive diagnostic tool for obesity and its subsequent effects in screening and monitoring of obesity-related metabolic complications in adolescents.

Keywords

Adolescents; high sensitivity C-reactive protein; Insulin-like growth factor binding proteins; Obesity; Oxidized Low-Density Lipoprotein; Predictive diagnostics

Subject

Biology and Life Sciences, Biochemistry and Molecular Biology

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