Diabetes and Chondrocyte Death During Fracture Healing
Author Information
Author(s): Kayal Rayyan A, Siqueira Michelle, Alblowi Jazia, McLean Jody, Krothapalli Nanarao, Faibish Dan, Einhorn Thomas A, Gerstenfeld Louis C, Graves Dana T
Primary Institution: Boston University School of Dental Medicine
Hypothesis
Diabetes enhances chondrocyte apoptosis during fracture healing through increased TNF-α production and FOXO1 activation.
Conclusion
Diabetes increases chondrocyte apoptosis during fracture healing, which can be mitigated by inhibiting TNF-α.
Supporting Evidence
- Diabetes caused an upregulation of proapoptotic genes during fracture healing.
- Chondrocyte apoptosis was significantly higher in diabetic mice compared to normoglycemic controls.
- Inhibition of TNF-α reduced chondrocyte apoptosis in diabetic mice.
- FOXO1 nuclear localization increased in chondrocytes of diabetic mice.
Takeaway
When mice have diabetes, their body has a harder time healing broken bones because more of their cartilage cells die. But if we block a certain protein, it helps them heal better.
Methodology
Mice were induced with type 1 diabetes and subjected to tibial or femoral fractures, followed by analysis of chondrocyte apoptosis and gene expression.
Limitations
The study was conducted in mice, which may not fully replicate human responses.
Participant Demographics
Eight-week-old male CD-1 mice were used in the study.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website