Adipocytokines and Insulin Resistance: The possible role of lipocalin-2, retinol binding protein-4, and adiponectin

Abstract Background: Although there is much evidence regarding the physiologic and pathogenic roles of the newly described adipokines retinol-binding protein 4 (RBP4) and lipocalin-2 as potential promoters of insulin resistance in obese adults, relatively little information exists regarding their roles in obese children. Methods: We investigated the circulating concentrations of RBP4 and lipocalin-2 in 80 obese girls (ages 9– 15 years) and their relationships with high-sensitivity C-reactive protein (hs-CRP) and the adipokines leptin and adiponectin. We divided participants by their body mass index standard deviation scores (BMI SDSs) into 4 groups of 20 girls each: overweight [mean BMI SDS (SD), 1.8 (0.4)], obese [2.2 (0.4)], morbidly obese [3.6 (0.4)], and lean controls [−0.11 (0.4)]. We measured plasma-soluble RBP4, the RBP4-binding protein transthyretin, lipocalin-2, hs-CRP, leptin, and adiponectin and calculated the homeostatic assessment model (HOMA) index from fasting glucose and insulin concentrations. Results: Unexpectedly, plasma RBP4 and lipocalin-2 concentrations were correlated negatively with BMI SDS values (P = 0.005, and P < 0.03, respectively). These results were different from those of adults and were not correlated with the HOMA index. In contrast, hs-CRP and leptin concentrations were positively correlated with BMI SDS values (P < 0.0001, and P < 0.00001, respectively), as expected, whereas the adiponectin concentration was negatively correlated (P = 0.008). Conclusions: Although the correlations of leptin, adiponectin, and hs-CRP concentrations with BMI in children are similar to those of adults, the correlations of RBP4 and lipocalin-2 with BMI in children are the inverse of those observed in adults. Thus, although systemic inflammation and mild insulin resistance are present in childhood obesity, RBP4 and lipocalin-2 concentrations are not increased in children as they are in obese adults with long-standing severe insulin resistance and type 2 diabetes.

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THU0065 Role of retinol binding protein 4 in insulin resistance of rheumatoid arthritis patients

Annals of the Rheumatic Diseases ◽

10.1136/annrheumdis-2012-eular.2030 ◽

2013 ◽

Vol 71 (Suppl 3) ◽

pp. 174.3-175

Author(s):

M. Flores-Rodríguez ◽

I. Ferraz-Amaro ◽

V. Hernández-Hernández ◽

J. Viotti ◽

C. Rodríguez de la Rosa ◽

...

Keyword(s):

Rheumatoid Arthritis ◽

Insulin Resistance ◽

Binding Protein ◽

Retinol Binding Protein ◽

Retinol Binding Protein 4

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Role of Retinol-Binding Protein 4 in Obese Asian Indians with Metabolic Syndrome

Journal of Medical Biochemistry ◽

10.2478/v10011-011-0032-4 ◽

2012 ◽

Vol 31 (1) ◽

pp. 40-46

Author(s):

Nirupama Shivakumar ◽

Meghanaa Kumar ◽

Manasa Aswathanarayan ◽

Maanasa Venkatesh ◽

Manasa Sheshadri ◽

...

Keyword(s):

Insulin Resistance ◽

Metabolic Syndrome ◽

Asian Indians ◽

Binding Protein ◽

Retinol Binding Protein ◽

C Reactive Protein ◽

Retinol Binding Protein 4 ◽

Reactive Protein ◽

Potential Marker

Role of Retinol-Binding Protein 4 in Obese Asian Indians with Metabolic SyndromeRetinol-binding protein 4 is an adipocytokine separately implicated in the development of obesity-related insulin resistance and proatherogenic lipid profile, however, its role in humans is unclear. This study was carried out to assess the role of retinol-binding protein 4 as a potential marker of metabolic syndrome in obese Asian Indians (a high-risk population for diabetes). 52 obese (BMI >23 kg/m2) Asian Indians were grouped into those with and without metabolic syndrome based on IDF criteria and compared with healthy controls. The anthropometric and biochemical parameters (fasting blood sugar, lipid profile, serum insulin, high-sensitivity C-reactive protein, and retinol-binding protein 4) were estimated. The obese groups had significantly altered adiposity indices, insulin resistance parameters (fasting blood sugar (only in the metabolic syndrome group), serum insulin, HOMA-IR and QUICKI), index of inflammation (C-reactive protein) and proatherogenic dyslipidemic profile (serum triglycerides, VLDL-cholesterol, and triglyceride/HDL-cholesterol ratio). Retinol-binding protein 4 levels were elevated in the obese groups, but were not significant. Retinol-binding protein 4 levels were correlated with anthro-pometric parameters and atherogenic lipids, while C-reactive protein was correlated with anthropometric and insulin resistance parameters in the entire group of subjects. Although these correlations were not observed in the obese groups, in the control group, retinol-binding protein 4 was correlated to the lipid parameters and C-reactive protein to adiposity indices. Thus, the role of retinol-binding protein 4 as a potential marker of metabolic syndrome is limited to the prediction of proatherogenic risk among Asian Indians.

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Exploring the mediating role of serum retinol-binding protein 4 in the relationship between sleep quality and insulin resistance in pregnant women

Diabetes Research and Clinical Practice ◽

10.1016/j.diabres.2021.108866 ◽

2021 ◽

pp. 108866

Author(s):

Min Du ◽

Jue Liu ◽

Na Han ◽

Zhiling Zhao ◽

Shusheng Luo ◽

...

Keyword(s):

Insulin Resistance ◽

Sleep Quality ◽

Pregnant Women ◽

Binding Protein ◽

Retinol Binding Protein ◽

Serum Retinol ◽

Retinol Binding Protein 4 ◽

Mediating Role ◽

The Relationship

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Serum Retinol Binding Protein 4 Was Positively Associated with Insulin Resistance and Decreased after Laparoscopic Sleeve Gastrectomy in Chinese Obese Patients

Diabetes ◽

10.2337/db18-2455-pub ◽

2018 ◽

Vol 67 (Supplement 1) ◽

pp. 2455-PUB

Author(s):

XINGCHUN WANG ◽

LIANG LI ◽

CUILING ZHU ◽

JINGYANG GAO ◽

SHEN QU

Keyword(s):

Insulin Resistance ◽

Sleeve Gastrectomy ◽

Laparoscopic Sleeve Gastrectomy ◽

Binding Protein ◽

Retinol Binding Protein ◽

Obese Patients ◽

Serum Retinol ◽

Retinol Binding Protein 4

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Plasma retinol-binding protein 4 in the first and second trimester and risk of gestational diabetes mellitus in Chinese women: a nested case-control study

Nutrition & Metabolism ◽

10.1186/s12986-019-0425-9 ◽

2020 ◽

Vol 17 (1) ◽

Cited By ~ 1

Author(s):

Chuyao Jin ◽

Lizi Lin ◽

Na Han ◽

Zhiling Zhao ◽

Zheng Liu ◽

...

Keyword(s):

Diabetes Mellitus ◽

Insulin Resistance ◽

Gestational Diabetes ◽

Gestational Diabetes Mellitus ◽

Binding Protein ◽

First Trimester ◽

Retinol Binding Protein ◽

Second Trimester ◽

Retinol Binding Protein 4 ◽

Plasma Retinol

Abstract Background To assess the association between plasma retinol-binding protein 4 (RBP4) levels both in the first trimester and second trimester and risk of gestational diabetes mellitus (GDM). Methods Plasma RBP4 levels and insulin were measured among 135 GDM cases and 135 controls nested within the Peking University Birth Cohort in Tongzhou. Multivariable linear regression analysis was conducted to assess the influence of RBP4 levels on insulin resistance. Conditional logistic regression models were used to compute the odds ratio (OR) and 95% confidence interval (CI) between RBP4 levels and risk of GDM. Results The GDM cases had significantly higher levels of RBP4 in the first trimester than controls (medians: 18.0 μg/L vs 14.4 μg/L; P < 0.05). Plasma RBP4 concentrations in the first and second trimester were associated with fasting insulin, homeostasis model assessment for insulin resistance (HOMA-IR), and the quantitative insulin sensitivity check index (QUICKI) in the second trimester (all P < 0.001). With adjustment for diet, physical activity, and other risk factors for GDM, the risk of GDM increased with every 1-log μg/L increment of RBP4 levels, and the OR (95% CI) was 3.12 (1.08–9.04) for RBP4 in the first trimester and 3.38 (1.03–11.08) for RBP4 in the second trimester. Conclusions Plasma RBP4 levels both in the first trimester and second trimester were dose-dependently associated with increased risk of GDM.

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