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von Loeffelholz, C.* ; Pfeiffer, A.F.* ; Lock, J.F.* ; Lieske, S.* ; Döcke, S.* ; Murahovschi, V.* ; Kriebel, J. ; de Las Heras Gala, T. ; Grallert, H. ; Rudovich, N.N.* ; Stockmann, M.* ; Spranger, J.* ; Jahreis, G.* ; Bornstein, S.R.* ; Lau, G.* ; Xu, A.* ; Schulz-Menger, J.* ; Exner, L.* ; Haufe, S.* ; Jordan, J.* ; Engeli, S.* ; Birkenfeld, A.L.*

ANGPTL8 (Betatrophin) is expressed in visceral adipose tissue and relates to human hepatic steatosis in two independent clinical collectives.

Horm. Metab. Res. 49, 343-349 (2017)
Postprint DOI
Open Access Green
Angiopoietin-like protein 8 (ANGPTL8)/betatrophin expression in visceral adipose tissue and associations with circulating fatty acid profile have not yet been investigated.Forty subjects were included in a cross-sectional study, 57 in a dietary weight reduction intervention. Circulating Angiopoietin-like protein 8/betatrophin was measured in all subjects. Liver and adipose tissue were sampled and plasma fatty acids and tissue Angiopoietin-like protein 8/betatrophin expression were evaluated in the cross-sectional study. In the intervention study oral glucose testing and liver magnetic resonance scanning at baseline and after 6 months were performed. Angiopoietin-like protein 8/betatrophin mRNA was increased in visceral compared to subcutaneous adipose tissue (p<0.001). Circulating ANGPTL8/betatrophin correlated with liver steatosis (r=0.42, p=0.047), triacylglycerols (r=0.34, p=0.046), saturated (r=0.43, p=0.022), monounsaturated (r=0.51, p=0.007), and polyunsaturated fatty acids (r=-0.53, p=0.004). In the intervention study, baseline Angiopoietin-like protein 8/betatrophin correlated with age (r=0.32, p=0.010) and triacylglycerols (r=0.30, p=0.02) and was increased with hepatic steatosis (p=0.033). Weight loss reduced liver fat by 45% and circulating Angiopoietin-like protein 8/betatrophin by 11% (288±17 vs. 258±17 pg/ml; p=0.015). Angiopoietin-like protein 8/betatrophin is related to liver steatosis, while visceral adipose tissue represents an additional site of expression in humans.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Diabetes ; Fatty Acids ; Fatty Liver ; Hdl ; Hepatokine ; Insulin Resistance ; Ldl ; Triacylglycerides; Fatty Liver-disease; Increased Circulating Levels; Glucose-homeostasis; Insulin-resistance; Lipid-metabolism; Individuals; Serum; Angptl8/betatrophin; Association; Lipasin
ISSN (print) / ISBN 0018-5043
e-ISSN 1439-4286
Quellenangaben Volume: 49, Issue: 5, Pages: 343-349 Article Number: , Supplement: ,
Publisher Thieme
Publishing Place Stuttgart
Reviewing status Peer reviewed