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01.12.2014 | Research | Ausgabe 1/2014 Open Access

Diabetology & Metabolic Syndrome 1/2014

Correlation between reduction of superior interventricular groove epicardial fat thickness and improvement of insulin resistance after weight loss in obese men

Zeitschrift:
Diabetology & Metabolic Syndrome > Ausgabe 1/2014
Autoren:
Kae-Woei Liang, I-Chen Tsai, Wen-Jane Lee, Shih-Yi Lin, Wen-Lieng Lee, I-Te Lee, Chia-Po Fu, Jun-Sing Wang, Wayne H-H Sheu
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1186/​1758-5996-6-115) contains supplementary material, which is available to authorized users.

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

Regarding the contribution of each author, WHS designed the study and in charge of the whole program. KWL analyzed and interpreted the data and wrote the manuscript. ICT and WJL performed the laboratory work. WLL, SYL, ITL, JSW and CPF recruited the patients, and critically reviewed the manuscript for important intellectual content. All authors read and approved the final manuscript.

Abstract

Background

It has been recognized that reduction of abdominal visceral fat and subcutaneous fat are associated with improvement in insulin-resistance (IR) after weight loss. However, few studies have investigated the correlation of reduction in epicardial adipose tissue (EAT) with improvement of IR index after weight loss in obese non-diabetic men with metabolic syndrome (MetS).

Methods and results

We prospectively enrolled 32 non-diabetic men with MetS for a 3-month weight reduction program mainly by diet control and exercise. Magnetic resonance imaging (MRI) examinations were used to measure EAT, subcutaneous fat, and abdominal visceral fat. Anthropometric parameters, oral glucose tolerance test (OGTT), and serum adipokines were assessed before and after the weight loss program. After a 3-month weight loss program, 27 obese MetS men had significant weight loss >5% (97 ± 14 to 87 ± 14 kg, with a 10.7 % decrease, p < 0.001). Multivariate analysis revealed that the decrement ratio of superior interventricular groove (SIVG) EAT thickness (r = 0.322, p = 0.044) and serum leptin (r = 0.626, p < 0.001) significantly correlated with the percentage improvements of fasting HOMA-IR index. Furthermore, the decrement ratio of SIVG EAT thickness (r = −0.370, p = 0.017) and decrement ratio of subcutaneous fat area (r = −0.673, p = 0.006) were significantly correlated with improvement of OGTT-derived Matsuda insulin-sensitivity index.

Conclusions

The decrement ratio of SIVG EAT correlated with improvement of both HOMA-IR and OGTT-derived Matsuda insulin-sensitivity indexes after weight loss in obese non-diabetic men with MetS.

Clinical trial registration

(Multi-faceted Evaluations Following Weight Reduction in Subjects with Metabolic Syndrome NCT01065753 on Feb 8, 2010).
Zusatzmaterial
Authors’ original file for figure 1
13098_2014_376_MOESM1_ESM.tiff
Literatur
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