Bone Abstracts

Objectives: i) To assess bone (BMC) by BIA in apparently healthy Indian children. ii) To generate percentile curves for BIA measured BMC by age/gender. iii) To investigate relationship between BMC measured by BIA and DXA in separate subset.Methods: In a multicentre study, 4154 children (2298 boys), 5–18 years underwent BMC assessment by BIA. BMC for age percentiles were computed using LMS method. In 41 children (not from the multicentre study) total...

Objective: Fractures represent a common injury during childhood and adolescence. Knowledge of epidemiology of fractures is crucially important for implementation of prevention strategies for target population. Our objective was to evaluate incidence of fractures in Indian children and adolescents and to investigate association of fractures with physical activity.Methods: Data on history of fracture, age, site of fracture and physical activity were collec...

Objective: Optimal intakes of calcium and milk are necessary in children and adolescents to facilitate not only mineralization but also growth in stature. Low intakes of calcium and also, of milk and milk products in Indian children have been reported. Hence, the objective was to study Indian children’s growth with respect to their calcium and dairy intakes.Methods: We studied 220 children (boys 104, age range 2–16 years). Data on their height,...

Objective: To describe changes in the muscle–bone unit, assessed as the ratio of bone mineral content (BMC) to lean body mass (LBM) at skeletal sites during puberty in Indian males and females, after adjusting for age and fat.Methods: Data on arm, leg and total body (less head) BMC, LBM and fat mass (FM) assessed by DXA for 888 apparently healthy children and adolescents (426 females), 5–17 years of age from a cross-sectional study used to gene...

Objective: In children, factors such as age and puberty are confounders when investigating associations of fat or lean with bone mineral content (BMC). Our aim was to assess influence of fat on BMC in overweight/obese (ow/ob) and normal weight (nw) children at different stages of puberty.Methods: Cross-sectionally, 244 children+adolescents (6–16 years) (73nw, 177ow/ob) were assessed (tanner staging (TS), body composition (DXA) (total body BMC, lean ...

Background: Cannabinoid receptors are expressed in synovial joints but their role in joint disease is unknown. Here we examined the role of the type 2 cannabinoid receptor (CB2) in the pathogenesis of age-related osteoarthritis and osteoarthritis caused by destabilisation of the medial meniscus (DMM) in WT and CB2-deficient mice (Cnr2−/− mice).Methods: The severity of arthritis was graded histologically according to standard techni...

Bone resorption and formation occur in a tightly regulated fashion reflecting the coupled activities of osteoclasts and osteoblasts. Several pathological conditions perturb this balance, including osteoporosis and skeletal metastases. In the case of metastases, the uncoupling of resorption and formation activities contributes to disseminated tumor cells homing to the bone and to tumor growth within the bone in highly localized regions. Therefore, a site-specific marker of bone...

Purpose: To determine the association between socio-economic status (SES) and risk of hip fracture.Methods: Retrospective cohort study. We used a population database which contains primary care and hospital inpatient records of over >5 million people. Anyone registered in this database in 2009–2012 and resident in an urban area was eligible. Main measures: a validated SES composite index (accounting for proportion of unemployed, insufficiently e...

Bisphosphonate treatment reduces fracture risk in women with postmenopausal osteoporosis. However, some patients have an inadequate response to treatment. Estradiol and sclerostin play an important role in bone metabolism. Sclerostin is an endogenous inhibitor of osteoblastic activity and estrogen deficiency increases osteoclast activity and bone resorption.We examined the influence of both measures on fracture incidence in postmenopausal osteoporosis in...

Fibroblast growth factor-23 (FGF23) is a bone derived phosphate-regulating hormone which is elevated in hypophosphataemic rickets. Recent findings demonstrate iron deficiency as a potential mediator of FGF23 expression and murine studies have shown in utero effects of maternal iron deficiency leading to increased FGF23 concentration and disordered bone development (Clinkenbeard. JBMR 2013). Children with rickets in rural Gambia, West Africa, have high prevalences of i...