TY - JOUR

T1 - Ectopic Lipid Deposition Is Associated With Insulin Resistance in Postmenopausal Women

AU - Abildgaard, Julie

AU - Danielsen, Else Rubaek

AU - Dorph, Emma

AU - Thomsen, Carsten

AU - Juul, Anders

AU - Ewertsen, Caroline

AU - Pedersen, Bente Klarlund

AU - Pedersen, Anette Tonnes

AU - Ploug, Thorkil

AU - Lindegaard, Birgitte

PY - 2018/9

Y1 - 2018/9

N2 - Context: Menopause is associated with an increased incidence of insulin resistance and diabetes. Objective: The aim of this study was to explore the lipid deposition in liver and skeletal muscle and investigate the association with insulin sensitivity in postmenopausal and premenopausal women. Design and Setting: Single-center cross-sectional study of 55 healthy women between 45 and 60 years of age. We measured lipid deposition in the liver with magnetic resonance spectroscopy, intramuscular and intra-abdominal lipid deposition with MRI, body composition with a dual-energy X-ray absorptiometry scan, and insulin sensitivity with the composite Matsuda Index. Outcome Measures: We studied the association between fat distribution, ectopic lipid deposition, and insulin sensitivity in pre- and postmenopausal women. Results: Postmenopausal women had an increased lipid deposition in the liver [0.68% (0.44 to 0.99) vs 0.49% (0.38 to 0.64), P= 0.01] and skeletal muscle [3% (2 to 4) vs 2% (1 to 3), P= 0.001] and had a 28% lower Matsuda insulin sensitivity index during an oral glucose tolerance test (6.31 +/- 3.48 vs 8.78 +/- 4.67, P= 0.05) compared with premenopausal women. Total fat mass and leg fat mass were stronger predictors of ectopic lipid deposition, and visceral fat mass was a stronger predictor of both ectopic lipid deposition and insulin resistance in postmenopausal women compared with premenopausal women. Conclusions: For a given subcutaneous and visceral fat depot size, postmenopausal women show increased ectopic lipid deposition and insulin resistance compared with premenopausal women. It is suggested that lipid deposition in liver and skeletal muscle may represent important mechanistic links between the changes in fat depots and the increased incidence of insulin resistance seen after menopause.

AB - Context: Menopause is associated with an increased incidence of insulin resistance and diabetes. Objective: The aim of this study was to explore the lipid deposition in liver and skeletal muscle and investigate the association with insulin sensitivity in postmenopausal and premenopausal women. Design and Setting: Single-center cross-sectional study of 55 healthy women between 45 and 60 years of age. We measured lipid deposition in the liver with magnetic resonance spectroscopy, intramuscular and intra-abdominal lipid deposition with MRI, body composition with a dual-energy X-ray absorptiometry scan, and insulin sensitivity with the composite Matsuda Index. Outcome Measures: We studied the association between fat distribution, ectopic lipid deposition, and insulin sensitivity in pre- and postmenopausal women. Results: Postmenopausal women had an increased lipid deposition in the liver [0.68% (0.44 to 0.99) vs 0.49% (0.38 to 0.64), P= 0.01] and skeletal muscle [3% (2 to 4) vs 2% (1 to 3), P= 0.001] and had a 28% lower Matsuda insulin sensitivity index during an oral glucose tolerance test (6.31 +/- 3.48 vs 8.78 +/- 4.67, P= 0.05) compared with premenopausal women. Total fat mass and leg fat mass were stronger predictors of ectopic lipid deposition, and visceral fat mass was a stronger predictor of both ectopic lipid deposition and insulin resistance in postmenopausal women compared with premenopausal women. Conclusions: For a given subcutaneous and visceral fat depot size, postmenopausal women show increased ectopic lipid deposition and insulin resistance compared with premenopausal women. It is suggested that lipid deposition in liver and skeletal muscle may represent important mechanistic links between the changes in fat depots and the increased incidence of insulin resistance seen after menopause.

U2 - 10.1210/jc.2018-00554

DO - 10.1210/jc.2018-00554

M3 - Journal article

C2 - 29889238

VL - 103

SP - 3394

EP - 3404

JO - Journal of Clinical Endocrinology and Metabolism

JF - Journal of Clinical Endocrinology and Metabolism

SN - 0021-972X

IS - 9

ER -