Variable cartilage degradation in mice with diet-induced metabolic dysfunction: Food for thought

A. E. Kozijn, L. M. Gierman, F. van der Ham, P. Mulder, M. C. Morrison, S. Kuhnast, R. A. van der Heijden, P. M. Stavro, A. van Koppen, E. J. Pieterman, A. M. van den Hoek, R. Kleemann, H. M. G. Princen, S. C. Mastbergen, F. P. J. G. Lafeber, A. -M. Zuurmond, I. Bobeldijk, H. Weinans, R. Stoop*

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    21 Citations (Scopus)

    Abstract

    Objective: Human cohort studies have demonstrated a role for systemic metabolic dysfunction in osteoarthritis (OA) pathogenesis in obese patients. To explore the mechanisms underlying this metabolic phenotype of OA, we examined cartilage degradation in the knees of mice from different genetic backgrounds in which a metabolic phenotype was established by various dietary approaches.

    Design: Wild-type C57BL/6J mice and genetically modified mice (hCRP, LDLr-/-. Leiden and ApoE*3Leiden. CETP mice) based on C57BL/6J background were used to investigate the contribution of inflammation and altered lipoprotein handling on diet-induced cartilage degradation. High-caloric diets of different macronutrient composition (i.e., high-carbohydrate or high-fat) were given in regimens of varying duration to induce a metabolic phenotype with aggravated cartilage degradation relative to controls.

    Results: Metabolic phenotypes were confirmed in all studies as mice developed obesity, hypercholesteremia, glucose intolerance and/or insulin resistance. Aggravated cartilage degradation was only observed in two out of the twelve experimental setups, specifically in long-term studies in male hCRP and female ApoE*3Leiden. CETP mice. C57BL/6J and LDLr-/-. Leiden mice did not develop HFD-induced OA under the conditions studied. Osteophyte formation and synovitis scores showed variable results between studies, but also between strains and gender.

    Conclusions: Long-term feeding of high-caloric diets consistently induced a metabolic phenotype in various C57BL/6J (-based) mouse strains. In contrast, the induction of articular cartilage degradation proved variable, which suggests that an additional trigger might be necessary to accelerate diet-induced OA progression. Gender and genetic modifications that result in a humanized pro-inflammatory state (human CRP) or lipoprotein metabolism (human-E3L. CETP) were identified as important contributing factors. (c) 2017 Published by Elsevier Ltd on behalf of Osteoarthritis Research Society International.

    Original languageEnglish
    Pages (from-to)95-107
    Number of pages13
    JournalOsteoarthritis and cartilage
    Volume26
    Issue number1
    DOIs
    Publication statusPublished - Jan-2018

    Keywords

    • Osteoarthritis
    • Metabolic dysfunction
    • High-fat diet
    • Obesity
    • Mouse model
    • C-REACTIVE PROTEIN
    • HIGH-FAT DIET
    • KNEE OSTEOARTHRITIS
    • TRANSGENIC MICE
    • ATHEROSCLEROSIS DEVELOPMENT
    • TISSUE INFLAMMATION
    • INDUCED OBESITY
    • MOUSE MODELS
    • METAANALYSIS
    • PROGRESSION

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