Melatonin supports alendronate in preserving bone matrix and prevents gastric inflammation in ovariectomized rats

Cell Biochemistry and Function
Esra Bihter GürlerBerrak Ç Yegen

Abstract

The anti-catabolic bisphosphonate alendronate is considered as the first-line medical treatment in post-menopausal osteoporosis; but several side effects, including gastric mucosal injury, are associated with its use. The aim was to elucidate whether combined treatment with melatonin plus alendronate would be more advantageous in the maintenance of bone and the prevention of gastric side effects. Under anaesthesia, female Sprague-Dawley rats underwent bilateral ovariectomy (OVX), while control group had sham surgery. Four weeks after the surgery, OVX rats were treated with saline, melatonin (25 μg/mL/d), alendronate (70 μg/kg/wk), melatonin + alendronate, melatonin + melatonin receptor antagonist (luzindole, 10 μg/kg/d) or alendronate + melatonin + luzindole for 8 weeks. Rats were euthanized at the end of 12th week. Runx2 expression, apoptotic cells, and trabecular thickness were evaluated in tibiae, while gastric tissues were analysed for oxidative injury parameters. In all OVX groups, Runx2 expression was depressed. Saline-treated OVX group presented an extreme decrease in calcified area in opposition to melatonin- or alendronate-treated groups, while the bones in alendronate + melatonin-treated group were similar to those of...Continue Reading

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Oct 22, 2019·Journal of Pineal Research·Nan FangLifeng Liu
Dec 19, 2019·Journal of Food Biochemistry·Dilek OzbeyliGoksel Sener

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