Skip to main content

Open Access High-carbohydrate Diets Affect the Size and Composition of Plasma Lipoproteins in Hamsters (Mesocricetus auratus)

Download Article:
 Download
(PDF 189.6 kb)
 

Abstract:

High-carbohydrate diets reduce plasma low-density lipoprotein (LDL)–cholesterol but also provoke the appearance of an atherogenic lipoprotein profile (ALP). Characterized by high plasma triglyceride, small dense LDL, and reduced high-density lipoprotein (HDL) cholesterol, an ALP is associated with insulin resistance. Despite extensive use of the fructose-fed hamster as a model of insulin resistance, little is known about changes that occur in the physical properties of circulating lipoproteins. Therefore, we investigated the metabolic and physical properties of lipoproteins in hamsters fed high-carbohydrate diets of varying complexity (60% carbohydrate as chow, cornstarch, or fructose) for 2 wk. Hamsters fed the high-fructose diet showed significantly increased very-low-density lipoprotein (VLDL)–triglyceride (92.3%), free cholesterol (68.6%), and phospholipid (95%), whereas apolipoprotein B levels remained unchanged. Median diameter of circulating VLDL was larger in fructose-fed hamsters (63 nm) than in cornstarch-fed hamsters. Fructose feeding induced a 42.5% increase LDL–triglyceride concurrent with a 20% reduction in LDL–cholesteryl ester. Compositional changes were associated with reduced LDL diameter. In contrast, fructose feeding caused elevations in all HDL fractions. The physical properties of apolipoprotein-B-containing lipoprotein fractions are similar between fructose-fed hamsters and humans with ALP. However, metabolism of high-density lipoprotein appears to differ in the 2 species.

Document Type: Miscellaneous

Publication date: April 1, 2008

More about this publication?
  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

    Attention Members: To access the full text of the articles, be sure you are logged in to the AALAS website.

    Attention: please note, due to a temporary technical problem, reference linking within the content is not available at this time

  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Information for Advertisers
  • For issues prior to 1998
  • Institutional Subscription Activation
  • ingentaconnect is not responsible for the content or availability of external websites
aalas/cm/2008/00000058/00000002/art00005
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more