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- W2125018843 abstract "Leptin may be a potential option in preventing osteoporosis for menopausal women. The objective of this study is to explore the molecular mechanism of leptin on bone metabolism in osteoblast. Primary osteoblasts were isolated from parietal bone of adult female rats. mRNA level of OB-Rb in osteoblasts was inhibited by siRNA to block leptin signal transmission. The whole genome expression was tested by using gene chip to preliminarily explore the molecular mechanism of leptin in regulating osteoblast activity. The optimal concentration of siRNA was 25 nM, resulting in a maximal inhibition of OB-Rb mRNA. Ossification (p < 0.05) and bone mineralization (p = 0.0001) were downregulated by inhibiting leptin signal transmission, while bone resorption (p = 0.007), osteoblast differentiation (p = 0.026) and negative regulation of bone remodeling (p = 0.004) were upregulated. The expressions of some genes were regulated by OB-Rb siRNA. The expressions of alkaline phosphatase (p = 0.014) and osteocalcin (p = 0.002) were reduced, while that of vascular endothelial growth factor A (p = 0.0076) and IL-6 (p = 0.021) were increased. In a model of osteoblast, leptin positively promotes ossification through multiple ways including bone mineralization, remodeling, resorption and osteoblast differentiation, but which way plays the most critical role is not discussed in this study and needs to be clarified in future." @default.
- W2125018843 created "2016-06-24" @default.
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- W2125018843 date "2013-05-24" @default.
- W2125018843 modified "2023-10-16" @default.
- W2125018843 title "Leptin promotes ossification through multiple ways of bone metabolism in osteoblast: a pilot study" @default.
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- W2125018843 doi "https://doi.org/10.3109/09513590.2013.798278" @default.
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