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Improved bone biomechanical properties in xylitol-fed aged rats
P T Mattila1, M J Svanberg, T Jämsä
1Oral and Maxillofacial Department, Oulu University Hospital, Oulu, Finland.
Metabolism: Clinical and Experimental
|January 10, 2002
Summary
Dietary xylitol supplementation improved bone strength and structure in aged rats. This study shows xylitol preserves bone biomechanics during aging, offering potential benefits for bone health.
Area of Science:
- Gerontology
- Bone Biology
- Nutritional Science
Background:
- Previous research indicated dietary xylitol protects against bone weakening in osteoporosis.
- Aging is associated with detrimental changes in bone biomechanical properties.
Purpose of the Study:
- To investigate the long-term effects of dietary xylitol on bone biomechanics during aging in rats.
- To determine if xylitol supplementation preserves bone structural and material strength properties in aged male rats.
Main Methods:
- A 20-month study involving male Sprague-Dawley rats divided into control and xylitol-supplemented (10% wt/wt) groups.
- Biomechanical testing of femurs using 3-point bending.
- Peripheral quantitative computed tomography (pQCT) analysis of femoral diaphysis and neck.
Main Results:
- Xylitol-fed rats exhibited significantly greater femoral diaphysis strength (load, stress, stiffness, energy absorption).
- pQCT revealed enhanced cortical bone area, thickness, and structural properties in xylitol-fed rats.
- Improved biomechanical properties and bone architecture were observed in the xylitol group, including the femoral neck.
Conclusions:
- Continuous dietary xylitol supplementation beneficially impacts bone biomechanical properties in aged rats.
- Xylitol preserves both structural and material strength properties of cortical bone during aging.
- Xylitol demonstrates potential as a dietary intervention to support bone health in aging populations.