Bone Abstracts

Objective: Due to the increase in the elderly population, osteoporosis and related fractures are increasing and causes serious social problems such as lower quality of life of seniors and economic loss. This study is aimed towards the general population in rural areas for prevalence and related risk factors of osteoporotic fracture.Materials and methods: The research comes from the Korean Rural Genomic Cohort study consisting of 10 111 people, 4090 men a...

Objective: The purpose of this study was to investigate the association between single nucleotide polymorphisms (SNPs) in leptin (LEP), its receptor (LEPR) and β adrenergic receptor (ADRB) genes and bone mineral density (BMD) in postmenopausal Korean women.Methods: The LEP c.280G>A, LEPR c.326A>G, c.668A>G, c.1968G>C, c.2096C>T, ADRB2 c.46A>G, c.79C>G, c.718T>C, c....

Mechanical stress and strain generated by physical exercises or the other passive stimulations are well known to have a positive effect on the growing musculoskeletal system. Especially, when the impact stimulation which evokes high magnitude of strain in a second is applied to bone, it improves bone qualities. Thus, to verify the effect of impact stimulation, we conducted longitudinal study on morphological properties of the tibia in growing rats. Free falls from designated h...

Osteoporosis takes the form of porous bone loss which is due to aging, insufficient exercise and unbalanced nutrition and so on. A number of treatments were developed to treat the osteoporosis, which were categorized by pharmacological and non-pharmacological methods. However, it is generally accepted that taking too much pharmacological medication may be harmful to the health. Thus, non-pharmacological treatments are considered as the alternative ways to overcome the side eff...

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Glucocorticoids (GCs) are widely used to treat chronic inflammatory diseases such as rheumatoid (RA) and lead to multiple side effects including glucocorticoid induced osteoporosis (GIO). Our work challenges the dogma that transrepression of pro-inflammatory genes by the glucocorticoid receptor (GR) is solely responsible for reducing inflammation, whereas transactivation of genes is causing side effects.Using conditional and function selective mutant mic...

Mesenchymal cells alter and retain their phenotype during skeletal development through activation or suppression of signaling pathways. For example, we have shown that Wnt3a only stimulates osteoblast differentiation in cells with intrinsic osteogenic potential (e.g., MC3T3-E1 pre-osteoblasts) and not in fat cell precursors or fibroblasts (respectively, 3T3-L1 pre-adipocytes or NIH3T3 fibroblasts). Wnt3a promotes osteogenesis in part by stimulating autocrine production of the ...

Engulfment adaptor phosphotyrosine-binding (PTB) domain containing 1 (GULP1) is an adaptor protein involved in the engulfment of apoptotic cells via phagocytosis. Although GULP1 is widely expressed in various tissues, including the brain, muscle, testis, and bone, the function of GULP1 has not been well studied. Here, we investigated whether GULP1 plays a role in the regulation of bone remodeling and examined its expression in bone cells. Conditional Gulp1 floxed mice...

Type 2 diabetes is associated with fracture risk but, paradoxically, greater bone mineral density. The trabecular bone score (TBS) has been proposed as an index of bone microarchitecture associated with bone quality. This study compared the performance of TBS, bone mineral density (BMD), original and TBS adjusted FRAX scores in the prediction of vertebral fractures (VFs) in diabetic patients. This cross-sectional study enrolled 169 Korean postmenopausal diabetic women. Lateral...

Growth plate cartilage is solely responsible for bone lengthening in children. Injury upon growth plate is often repaired by bony tissue which leads to bone growth defects such as limb length discrepancies or bone angulation deformity at later life. Earlier studies using an established rat growth plate injury model have identified a series of repair phases; inflammatory, fibrogenic, osteogenesis and remodelling repair phases. Currently, the cellular and molecular mechanisms in...