Markedly Blunted Metabolic Effects of Fructose in Healthy Young Female Subjects Compared With Male Subjects
- Caroline Couchepin, MD,
- Kim-Anne Lê, MSC,
- Murielle Bortolotti, MSC,
- Joana Amarante da Encarnaçao, BSC,
- Jean-Baptiste Oboni, BSC,
- Christel Tran, MD,
- Philippe Schneiter, PHD and
- Luc Tappy, MD
- From the Department of Physiology, Lausanne University School of Biology and Medicine, Lausanne, Switzerland
- Corresponding author: Luc Tappy, MD, Department of Physiology, 7 Rue du Bugnon, CH-1005 Lausanne, Switzerland. E-mail: luc.tappy{at}unil.ch
Abstract
OBJECTIVE—To compare the metabolic effects of fructose in healthy male and female subjects.
RESEARCH DESIGN AND METHODS—Fasting metabolic profile and hepatic insulin sensitivity were assessed by means of a hyperglycemic clamp in 16 healthy young male and female subjects after a 6-day fructose overfeeding.
RESULTS—Fructose overfeeding increased fasting triglyceride concentrations by 71 vs. 16% in male vs. female subjects, respectively (P < 0.05). Endogenous glucose production was increased by 12%, alanine aminotransferase concentration was increased by 38%, and fasting insulin concentrations were increased by 14% after fructose overfeeding in male subjects (all P < 0.05) but were not significantly altered in female subjects. Fasting plasma free fatty acids and lipid oxidation were inhibited by fructose in male but not in female subjects.
CONCLUSIONS—Short-term fructose overfeeding produces hypertriglyceridemia and hepatic insulin resistance in men, but these effects are markedly blunted in healthy young women.
Footnotes
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Published ahead of print at http://care.diabetesjournals.org on 10 March 2008. DOI: 10.2337/dc07-2001. Clinical trial reg. no. NCT00365170, clinicaltrials.gov.
The costs of publication of this article were defrayed in part by the payment of page charges. This article must therefore be hereby marked “advertisement” in accordance with 18 U.S.C. Section 1734 solely to indicate this fact.
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- Accepted March 4, 2008.
- Received October 16, 2007.
- DIABETES CARE
