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T. Miyahara, L. Schrum, R. Rippe, S. Xiong, H. F. Yee Jr., K. Motomura, F. A. Anania, T. M. Willson and H. Tsukamoto, “Peroxisome Proliferator-Activated Receptors and Hepatic Stellate Cell Activation,” The Journal of Biological Chemistry, Vol. 275, No. 46, 2000, pp. 35715-35722. doi:10.1074/jbc.M006577200

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• TITLE: The Effect of Resveratrol on Bone Status in Rats with Bile Duct Obstruction

  AUTHORS: Helena Zivna, Stanislav Micuda, Eva Brcakova-Dolezelova, Pavel Zivny

  KEYWORDS: Bone Metabolism; Rat; Resveratrol; Bile Duct Obstruction

  JOURNAL NAME: Open Journal of Endocrine and Metabolic Diseases, Vol.3 No.1, February 25, 2013

  ABSTRACT: Objective: We studied the influence of bile duct obstruction (BDO) after 28 days on bone metabolism status and their modification by resveratrol in male Wistar rats. Methods: The rats were divided into 3 groups: Sham group with laparotomy and vehiculum application, group BDO—bile duct obstruction and vehiculum application, and group RBDO—bile duct obstruction and resveratrol application (10 mg/kg dose of resveratrol orally once daily). The bone mineral density (BMD; g/cm2) and body composition were measured by dual energy X-ray absorptiometry. The physiccal strenght of femur was examined by controlled break biomechanical testing. The osteocalcin, procollagen type I N-terminal propeptide (PINP) and carboxy-terminal collagen crosslinks (CTX) were analysed by EIA in the bone tissue homogenate. Results: The total BMD was lower in group BDO (0.176 ± 0.005; p = 0.01) and R-BDO (0.181 ± 0.004; p = 0.052) vs Sham (0.209 ± 0.003). BMD of femur diaphysis in BDO group decreased significantly (p = 0.01) but not in R-BDO animals (p = 0.052). Body fat (g, median) was lower in BDO (19.0) and R-BDO (26.0) than in Sham (35.0). The force needed for fracture of femurs (N) significantly decreased in BDO (154 ± 6) and R-BDO (151 ± 13) vs Sham group (208 ± 7). The force needed for neck fracture decreased in BDO (105 ± 3) and R-BDO (115 ± 8) vs Sham (135 ± 9). The osteocalcin decrease in group R-BDO (2.9 ± 0.1) vs Sham (3.7 ± 0.4). Higher PINP/CTX were in BDO (20 ± 5/0.49 ± 0.08) and R-BDO (30 ± 4/0.55 ± 0.07) vs Sham (16 ± 4/0.48 ± 0.11). Conclusions: Our findings suggest that subchronic bile duct obstruction decreased body fat quantity and BMD with decrease of bone rigidity. Resveratrol showed protective effect on liver injury and consequently positive influence on bone tissue.