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Effect of canagliflozin treatment on hepatic triglyceride content and glucose metabolism in patients with type 2 diabetes
Author(s) -
Cusi Kenneth,
Bril Fernando,
Barb Diana,
Polidori David,
Sha Sue,
Ghosh Atalanta,
Farrell Kristin,
Sunny Nishanth E.,
Kalavalapalli Srilaxmi,
Pettus Jeremy,
Ciaraldi Theodore P.,
Mudaliar Sunder,
Henry Robert R.
Publication year - 2019
Publication title -
diabetes, obesity and metabolism
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.445
H-Index - 128
eISSN - 1463-1326
pISSN - 1462-8902
DOI - 10.1111/dom.13584
Subject(s) - canagliflozin , medicine , endocrinology , triglyceride , insulin , placebo , type 2 diabetes , diabetes mellitus , weight loss , chemistry , obesity , cholesterol , alternative medicine , pathology
Aim To evaluate the impact of the sodium glucose co‐transporter 2 inhibitor canagliflozin on intrahepatic triglyceride (IHTG) accumulation and its relationship to changes in body weight and glucose metabolism. Materials and methods In this double‐blind, parallel‐group, placebo‐controlled, 24‐week trial subjects with inadequately controlled type 2 diabetes mellitus (T2DM; HbA1c = 7.7% ± 0.7%) from two centres were randomly assigned (1:1) to canagliflozin 300 mg or placebo. We measured IHTG by proton‐magnetic resonance spectroscopy (primary outcome), hepatic/muscle/adipose tissue insulin sensitivity during a 2‐step euglycaemic insulin clamp, and beta‐cell function during a mixed meal tolerance test. Analyses were per protocol. Results Between 8 September 2014‐13 June 2016, 56 patients were enrolled. Canagliflozin reduced HbA1c (placebo‐subtracted change: −0.71% [−1.08; −0.33]) and body weight (−3.4% [−5.4; −1.4]; both P ≤ 0.001). A numerically larger absolute decrease in IHTG occurred with canagliflozin (−4.6% [−6.4; −2.7]) versus placebo (−2.4% [−4.2; −0.6]; P = 0.09). In patients with non‐alcoholic fatty liver disease (n = 37), the decrease in IHTG was −6.9% (−9.5; −4.2) versus −3.8% (−6.3; −1.3; P = 0.05), and strongly correlated with the magnitude of weight loss (r = 0.69, P < 0.001). Body weight loss ≥5% with a ≥30% relative reduction in IHTG occurred more often with canagliflozin (38% vs. 7%, P = 0.009). Hepatic insulin sensitivity improved with canagliflozin ( P < 0.01), but not muscle or adipose tissue insulin sensitivity. Beta‐cell glucose sensitivity, insulin clearance, and disposition index improved more with canagliflozin ( P < 0.05). Conclusions Canagliflozin improves hepatic insulin sensitivity and insulin secretion and clearance in patients with T2DM. IHTG decreases in proportion to the magnitude of body weight loss, which tended to be greater and occur more often with canagliflozin.