Bone Abstracts

Background and objectives: Vitamin D deficiency causes calcium-depleted bone, which further weakens the bones and increases the risk of fractures. Also, It is known as related to obstetrics problem like gestational diabetes, infections, preeclampsia and incidence of caesarean section as well as glucose metabolism, immune system, cardiovascular diseases and cancer.Recently, the relationship between preterm birth and vitamin D deficiency becomes the main i...

Indoxyl sulfate (IS) is one of a number of protein-bound uremic toxins that accumulate in patients with chronic kidney disease. Current conventional hemodialysis is ineffective at removing this toxin. Although IS may impair osteoblast function and induce abnormalities of bone turnover or arthropathy, the effects on knee joint tissue by IS has not been investigated yet. The present studies have been carried out to test the IS effects on synovial fibroblasts, meniscal fibrochond...

Prostate cancer is a commonly diagnosed malignancy in Europe. Bone is one of the common metastasis sites. There is increasing evidence for estrogen involvement in the prostate tumorigenesis. ERβ knockout (BERKO) mice have been reported to have anti-proliferative, anti-inflammatory and potential anti-tumorigenic functions of ERβ. However, prostate phenotype of BERKO mice has been under debate.The potential effect of ERβ on prostate tumorgen...

Bone remodeling and maintenance require a fine balance between bone formation of osteoblasts and resorption of osteoclasts. Therefore, various skeletal disorders cause by imbalanced differentiation and activities of these cells. RANKL (receptor activator of NF-kB ligand) induces Ca2+ oscillations and activates NFATc1 (nuclear factor of activated T cells i) during osteoclast differentiation. Although Ca2+ oscillations play a key role for osteoclastogenesis...

Backgrounds: Bladder cancer is the most common malignancy and also highest mortality of the urinary tract cancer. Urothelial cell carcinoma (UCC) is the most histopathological subtype of bladder cancer. Epidemiological studies have indicated that bladder cancer risk for cigarette smoking is more than twice than never smoking and that current cigarette smoking triples bladder cancer risk relative to never smoking. Cigarette smoking after bladder cancer diagnosis decreases cance...

Introduction: Osteoporosis is a major bone disease among postmenopausal women. Measurement of BMD in the spine and hip is used as gold standard for the diagnosis of osteoporosis. ISCD recommended that posteroanterior L1-4 as the spine region of interest for BMD measurement. However, both L1-4 and L2-4 are used in the clinical and epidemiological studies. The aim of our study was to evaluate whether the differences of BMD between L1-4 and L2-4 would exist.<p class="abstext"...

Introduction: The significance of sarcopenia and low muscle mass are especially emphasized in these days. Sarcopenia is well known to highly correlate with fragility and increases the risk of falling in the elderly and an important risk factor for disability and mortality. Evidence of inter-relaionship of muscle with bone metabolism is increasing. Therefore we investigated the relationship between BMD and muscle mass among healthy Korean premenopausal women.<p class="abste...

Objectives: Multiple studies have documented the presence of systemic osteopenia in adolescent idiopathic scoliosis and in simulated animal models. Osteopenia was also found to be associated with severe curves and as one of the prognostic factor in predicting curve progression in AIS. The objective of this study was to compare the bone quality and its association with osteopenia between AIS and normal controls.Methods: AIS (n=234) and non-AIS gi...

Introduction: Adolescent idiopathic scoliosis (AIS) is associated with osteopenia, which was found to be a significant prognostic factor for curve progression. However, in-depth quantitative assessment of bone quality was previously hampered by invasive nature of the investigations. The recently available high-resolution pQCT (HR-pQCT) allows a three-dimensional assessment of the bone quality in-vivo. This study aimed to evaluate and compare the bone quality in AIS gi...

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...