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Mechanical assessment of effects of grape seed proanthocyanidins extract on tibial bone diaphysis in rats.
Yahara, N; Tofani, I; Maki, K; Kojima, K; Kojima, Y; Kimura, M.
Affiliation
  • Yahara N; Department of Paediatric Dentistry, Kyushu Dental College, Manazuru, Kokurakita-ku, Kitakyushu, Japan.
J Musculoskelet Neuronal Interact ; 5(2): 162-9, 2005 Jun.
Article in En | MEDLINE | ID: mdl-15951633
ABSTRACT
We studied the effects of grape seed proanthocyanidins extract (GSPE) given as a ratio of 3 mg in 100 g in a standard diet, on the tibial bone diaphysis in low-calcium fed rats. Measurements of bone density, mineral content, geometry, and bone strength using peripheral quantitative computed tomography (pQCT). Further, the whole tibia bones were tested for mechanical resistance using a material-testing machine, and mineral elements were also determined. Forty male Wistar rats, 5 weeks old, were divided into control (Co), low-calcium diet (LC), low-calcium diet . standard diet (LCS), and low-calcium diet . standard diet with supplementary GSPE (LCSG) groups. We found no significant differences in body weight among the 4 groups, whereas all of the bone parameters in LC were significantly lower than those in Co (p<0.01, except in periosteal perimeter (Peri) p<0.05). The cortical bone mineral content (CtBMC), cortical bone density (CtvBMD) and Peri in LCSG were significantly higher than those in LCS (p<0.01; p<0.01; p<0.05, respectively). All bone parameters in LCSG were significantly higher than those in LC (p<0.01, except in Peri, and stress strain index to reference axis x (xSSI) p<0.05)). In addition, Ca, P, and Zn contents in LCSG were significantly higher than those in LCS (p<0.01; p<0.01; p<0.05, respectively). Our results suggest that GSPE included in a diet mixture with calcium has a beneficial effect on bone formation and bone strength for the treatment of bone debility caused by a low level of calcium.
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Database: MEDLINE Main subject: Tibia / Plant Extracts / Bone Density / Diaphyses / Proanthocyanidins Language: En Journal: J Musculoskelet Neuronal Interact Year: 2005 Type: Article Affiliation country: Japan
Search on Google
Database: MEDLINE Main subject: Tibia / Plant Extracts / Bone Density / Diaphyses / Proanthocyanidins Language: En Journal: J Musculoskelet Neuronal Interact Year: 2005 Type: Article Affiliation country: Japan