1
|
Hui Mingalone CK, Nehme CR, Chen Y, Liu J, Longo BN, Garvey KD, Covello SM, Nielsen HC, James T, Messner WC, Zeng L. A novel whole "Joint-in-Motion" device reveals a permissive effect of high glucose levels and mechanical stress on joint destruction. Osteoarthritis Cartilage 2023; 31:493-506. [PMID: 36379392 PMCID: PMC10033281 DOI: 10.1016/j.joca.2022.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 09/12/2022] [Accepted: 10/13/2022] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Osteoarthritis (OA) has recently been suggested to be associated with diabetes. However, this association often disappears when accounting for body mass index (BMI), suggesting that mechanical stress may be a confounding factor. We investigated the combined influence of glucose level and loading stress on OA progression using a novel whole joint-in-motion (JM) culture system. DESIGN Whole mouse knee joints were placed in an enclosed chamber with culture media and actuated to recapitulate leg movement, with a dynamic stress regimen of 0.5 Hz, 8 h/day for 7 days. These joints were treated with varying levels of glucose and controlled for osmolarity and diffusion. Joint movement and joint space were examined by X-ray fluoroscopy and microCT. Cartilage matrix levels were quantified by blinded Mankin scoring and immunohistochemistry. RESULTS Culturing in the JM device facilitated proper leg extension and flexion movements, and adequate mass transport for analyzing the effect of glucose on cartilage. Treatment with higher levels of glucose either via media supplementation or intra-articular injection caused a significant decrease in levels of glycosaminoglycan (GAG) and an increase in aggrecan neoepitope in articular cartilage, but only under dynamic stress. Additionally, collagen II level was slightly reduced by high glucose levels. CONCLUSIONS High levels of glucose and dynamic stress have permissive effects on articular cartilage GAG loss and aggrecan degradation, implicating that mechanical stress confounds the association of diabetes with OA. The JM device supports novel investigation of mechanical stress on the integrity of an intact living mouse joint to provide insights into OA pathogenesis.
Collapse
Affiliation(s)
- C K Hui Mingalone
- Program in Cell, Molecular, and Developmental Biology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA 02111, USA
| | - C R Nehme
- Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA
| | - Y Chen
- Program in Pharmacology and Drug Development, Graduate School of Biomedical Sciences, Tufts University, Boston, MA 02111, USA
| | - J Liu
- Department of Immunology, Tufts University School of Medicine, Boston, MA 02111, USA
| | - B N Longo
- Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA
| | - K D Garvey
- Program in Pharmacology and Drug Development, Graduate School of Biomedical Sciences, Tufts University, Boston, MA 02111, USA
| | - S M Covello
- Program in Pharmacology and Drug Development, Graduate School of Biomedical Sciences, Tufts University, Boston, MA 02111, USA
| | - H C Nielsen
- Program in Cell, Molecular, and Developmental Biology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA 02111, USA; Department of Pediatrics, Tufts Medical Center, Boston, MA 02111, USA
| | - T James
- Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA
| | - W C Messner
- Department of Mechanical Engineering, Tufts University, Medford, MA 02155, USA.
| | - L Zeng
- Program in Cell, Molecular, and Developmental Biology, Graduate School of Biomedical Sciences, Tufts University, Boston, MA 02111, USA; Program in Pharmacology and Drug Development, Graduate School of Biomedical Sciences, Tufts University, Boston, MA 02111, USA; Department of Immunology, Tufts University School of Medicine, Boston, MA 02111, USA.
| |
Collapse
|