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. 2016 Nov;24(11):2399-2406.
doi: 10.1002/oby.21651.

Hepatic Steatosis is Common in Adolescents with Obesity and PCOS and Relates to De Novo Lipogenesis but not Insulin Resistance

Melanie Cree-Green  1   2 , Bryan C Bergman  3 , Gregory V Coe  4 , Lindsey Newnes  4 , Amy D Baumgartner  4 , Samantha Bacon  3 , Ann Sherzinger  5 , Laura Pyle  6   7 , Kristen J Nadeau  4   8
Affiliations

Hepatic Steatosis is Common in Adolescents with Obesity and PCOS and Relates to De Novo Lipogenesis but not Insulin Resistance

Melanie Cree-Green et al. Obesity (Silver Spring). 2016 Nov.

Abstract

Objective: Increased liver fat and type 2 diabetes are prevalent in women with polycystic ovarian syndrome (PCOS) and cause excess mortality, yet little is known about their development during adolescence. The objective of this study was to measure hepatic steatosis and related metabolic contributors in girls with obesity, with and without PCOS.

Methods: Nondiabetic adolescents with obesity, 41 with PCOS (PCOS; age 15.0 [13.0-16.0] years, BMI 35.2 ± 0.61 kg/m2 ) and 30 without PCOS (OB; age 14.5 [13.0-17.0], BMI 33.2 ± 1.8), were studied. Visceral and liver fat were assessed with MRI. Serum measures included androgens and 16:1 and 18:1 N7 fatty acids specific to de novo lipogenesis. Adipose, hepatic, and peripheral insulin sensitivity (IS) were assessed with a four-phase hyperinsulinemic-euglycemic clamp with isotope tracers.

Results: Forty-nine percent of the PCOS group had hepatic steatosis versus fourteen percent of the OB group (P = 0.02), and the PCOS group had higher N7 (43 ± 4 vs. 29 ± 5 nmol/g; P = 0.02). Peripheral IS was lower in PCOS (9.4 [7.2-12.3] vs. 14.5 [13.1-18.05 mg/lean kg/min]; P < 0.001) as was hepatic (P = 0.006) and adipose IS (P = 0.005). Percent liver fat correlated with N7 (R = 0.46, P = 0.02) and visceral fat (R = 0.42, P < 0.001), not androgens or peripheral IS.

Conclusions: Nearly 50% of nondiabetic girls with PCOS and obesity have hepatic steatosis, which relates to visceral fat and lipogenesis, but not to IS or androgens.

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Conflict of interest statement

The authors declare no conflict of interest

Figures

Figure 1
Figure 1
Glucose related measurements from the hyper-insulinemic clamps are shown above. Data are shown by PCOS and non-PCOS status, and then by phase of the clamp, named per insulin dose. The P-values are from the test of the group by time interaction from the repeated measures models.
Figure 2
Figure 2
Fat related measurements from the hyper-insulinemic clamps are shown above. Data are shown by PCOS and non-PCOS status, and then by phase of the clamp, named per insulin dose. The P-values are from the test of the group by time interaction from the repeated measures models.
See this image and copyright information in PMC

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