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Nr. 28(3)/2020 DOI:10.2478/rrlm-2020-0028
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Research article

The association of anthropometric parameters with markers of insulin and leptin secretion and resistance in type 2 diabetes mellitus

Simona Cernea, Emőke Both, Adriana Fodor

Correspondence should be addressed to: Simona Cernea

Abstract:

Aim: We evaluated the association between anthropometric parameters and markers of insulin and leptin secretion/resistance in patients with type 2 diabetes mellitus (T2DM). Material and methods: This post-hoc data analysis from a cross-sectional study included 176 T2DM patients. Laboratory tests (serum leptin, soluble form of leptin receptor (sObR), C peptide, glycemic and lipid parameters) and anthropometric parameters were obtained, adiposity indexes (including body adiposity index (BAI), visceral adiposity index (VAI)), indicators of insulin resistance, β-cell function, and leptin resistance (Free Leptin Index, FLI) were calculated. Results: The body mass index (BMI), diabetes duration, VAI and leptin correlated independently with HOMA-IR, while BMI, diabetes duration and HbA1c with HOMA-B. The total body fat mass (TBFM), C peptide, diabetes duration, BMI and BAI correlated with leptin concentrations, while the first three with FLI. VAI was an indicator of insulin resistance (β=0.166, p=0.003), while BAI of leptin secretion (β=0.260, p=0.010). TBFM strongly associated with leptin resistance and secretion (β=0.037, r=0.688, p<0.0001, and β=0.521, r=0.667, p<0.0001), and BMI correlated weakly with insulin secretion and resistance. While insulin and leptin secretion increased progressively with BMI, leptin and insulin resistance became significant only in case of obesity. The sObR was significantly associated with C peptide concentrations (β=-0.032; p=0.044), but not with HOMA-B or -IR. A strong positive correlation between the C peptide/leptin ratio and non-fat mass /TBFM ratio was noted (r=0.62 [0.52, 0.71], p<0.0001). Conclusions: Parameters of peripheral adiposity correlated better with markers of leptin system, and those of visceral adiposity with markers of insulin secretion/resistance. The sObR correlated independently and negatively with C peptide.

Keywords: type 2 diabetes; insulin resistance; leptin system; anthropometric parameters

Received: 23.4.2020
Accepted: 20.6.2020
Published: 30.6.2020

 
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How to cite
Cernea S, Both E, Fodor A. The association of anthropometric parameters with markers of insulin and leptin secretion and resistance in type 2 diabetes mellitus. Rev Romana Med Lab. 2020;28(3):299-314. DOI:10.2478/rrlm-2020-0028