Mar, 2009
Vitamin C intake inhibits serum lipid peroxidation and osteoclast differentiation on alveolar bone in rats fed on a high-cholesterol diet.
Archives of oral biology
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- Volume
- 54
- Number
- 3
- First page
- 235
- Last page
- 40
- Language
- English
- Publishing type
- DOI
- 10.1016/j.archoralbio.2008.11.001
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
Objective: A high-cholesterol diet stimulates osteoclast differentiation, which may be induced by increased serum lipid peroxidation. The inhibition of serum lipid peroxidation by vitamin C may offer beneficial effects on osteoclast differentiation including increased expression of receptor activator of nuclear factor (NF)-kappa B ligand (RANKL) and NF-kappa B. This study investigated the effects of vitamin C intake on RANKL and NF-kappa B expression in periodontal tissue of rats fed a high-cholesterol diet.
Design: Twenty-four rats (8 weeks old) were divided into four groups: a control group (fed a regular diet) and three experimental groups (fed a high-cholesterol diet supplemented with 0,1 and 2 g/I vitamin C/day) in this 12-week study. Vitamin C was provided by its addition to drinking water. As an index of serum lipid peroxidation, hexanoyl-lysine (HEL) level was determined by a competitive enzyme-linked immunosorbent assay method. Immunohistological analysis was performed to evaluate RANKL and NF-kappa B expression on the alveolar bone surface. The number of tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts was also counted.
Results: Feeding a high-cholesterol diet increased not only the serum HEL level but also the number of TRAP-positive osteoclasts on the alveolar bone surface, with an increase in RANKL and NF-kappa B expression on alveolar bone surface. intake of vitamin C reduced the serum HEL level and osteoclast differentiation, with decreasing RANKL and NF-kappa B expression.
Conclusions: Vitamin C intake could suppress osteoclast differentiation, including RANKL and NF-kappa B expression on the alveolar bone surface, by decreasing serum lipid peroxidation in rats fed a high-cholesterol diet. (c) 2008 Elsevier Ltd. All rights reserved.
Design: Twenty-four rats (8 weeks old) were divided into four groups: a control group (fed a regular diet) and three experimental groups (fed a high-cholesterol diet supplemented with 0,1 and 2 g/I vitamin C/day) in this 12-week study. Vitamin C was provided by its addition to drinking water. As an index of serum lipid peroxidation, hexanoyl-lysine (HEL) level was determined by a competitive enzyme-linked immunosorbent assay method. Immunohistological analysis was performed to evaluate RANKL and NF-kappa B expression on the alveolar bone surface. The number of tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts was also counted.
Results: Feeding a high-cholesterol diet increased not only the serum HEL level but also the number of TRAP-positive osteoclasts on the alveolar bone surface, with an increase in RANKL and NF-kappa B expression on alveolar bone surface. intake of vitamin C reduced the serum HEL level and osteoclast differentiation, with decreasing RANKL and NF-kappa B expression.
Conclusions: Vitamin C intake could suppress osteoclast differentiation, including RANKL and NF-kappa B expression on the alveolar bone surface, by decreasing serum lipid peroxidation in rats fed a high-cholesterol diet. (c) 2008 Elsevier Ltd. All rights reserved.
- Link information
- ID information
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- DOI : 10.1016/j.archoralbio.2008.11.001
- ISSN : 0003-9969
- Pubmed ID : 19110235
- Web of Science ID : WOS:000263764400006