Bone Abstracts

Sarcopenia has been indicated as one of the important markers of frailty among the elderly. This study aims to evaluate mortality risk among Japanese elderly persons with sarcopenia, taking into account lifestyle and physical factors.From among a population-based community cohort, the Adult Health Study conducted at RERF, 1880 subjects (626 men and 1 254 women) aged 47–95 years old were enrolled in a prospective and longitudinal cohort study in Hiro...

Objectives: Endochondral ossification in the growth plate cartilage (GPC) plays a crucial role in the determination of the length and shape of long bones. Many skeletal dysplasias are caused by GPC dysfunction, associated with short stature. We have already reported that human iPS cell-derived cartilage (hiPSC-Cart), when implanted into the subcutaneous spaces of the SCID mice for 4 weeks, formed skeletal tissue like GPC. This model could also recapitulate the pathology of FGF...

Objectives: Osteogenesis imperfecta (OI) is a relatively common skeletal dysplasia characterized by bone fragility, mainly resulting from mutations in the COL1A1 and COL1A2 genes. Phenotype–genotype correlation is not fully uncovered in OI. Additionally, more than ten genes have been found to be responsible for OI. In the current study, we determine mutations in patients with OI using a targeted exome sequencing and examine a phenotype–genotype correlation.<p cla...

Background: Hypophosphatasia (HPP) is characterized by defective mineralization of bone and/or teeth in the presence of low serum alkaline phosphatase (ALP) activity and caused by mutations in the ALPL gene encoding tissue-nonspecific ALP. Odontohypophosphatasia (odonto HPP) is the mildest form of hypophosphatasia and characterized by dental complications without abnormalities of the skeleton system.Objectives: We aimed to investigate biochemical and gen...