Searchable abstracts of presentations at key conferences on calcified tissues

ba0003pp392 | Other diseases of bone and mineral metabolism | ECTS2014

Serum concentration of bone tissue metabolism markers in 28 and 180-day-old Polish Large White pigs

Beveridge Louise , Struthers Allan , Khan Faisel , Jorde Rolf , Scragg Robert , MacDonald Helen , Witham Miles

Evaluation of time-related changes of serum biochemical bone metabolism markers was performed in male pigs. Control group (n=7) received saline. NanoCa group (n=7) received nanopartical calcium per os (Ace Nano Calcium, NanoTechWorld, Korea). Dex group (n=7) received dexamethasone (1 mg/kg/48 hr i.m.). NanoCa/Dex group (n=6) received simultaneously nanopartical calcium and dexamethasone the same as the groups NanoCa and Dex...

ba0004oc3 | (1) | ICCBH2015

Sedentary time negates the positive influence of moderate-to-vigorous physical activity but not vigorous physical activity on bone strength in adolescent girls

Tan Vina , Macdonald Heather , McKay Heather

We examined the influence of objectively measured moderate-to-vigorous physical activity (MVPA) and vigorous PA (VPA) and sedentary time (SED) on bone strength, structure and density in post-pubertal girls.We had 63 healthy girls (15.3±0.3 years) from the Health Promoting Secondary Schools (HPSS) study with valid accelerometry data and tibia scans. We assessed the left tibia using peripheral quantitative computed tomography (pQCT, XCT 3000, Stratec)...

ba0006p091 | (1) | ICCBH2017

Reliability and validity of DXA based images for measurement of height in children

Macdonald R , Capaldi N , Joseph S , Mason A , Wong SC

Background: Height is required for interpretation of bone mineral density in children and is often challenging in non-weight bearing children. Monitoring of linear growth in non-weight bearing children as part of assessment of bone health is also important.Objective: To investigate the feasibility of a novel method of using DXA images to measure height (Ht), sitting height (SH) and leg length (LL).Methods: Ht and SH were measured o...

ba0007p185 | (1) | ICCBH2019

High impact exercise to improve musculoskeletal outcomes in Crohn's disease: a feasibility questionnaire

Steell Lewis , Gaya Daniel R , Macdonald Jonathan , Russell Richard K , Seenan John Paul , Wong Sze Choong , Gray Stuart

Objective: Bone and muscle deficits are observed in patients with Crohn’s disease (CD). High-impact exercise (HIE), such as jumping based exercise, can provide hypertrophic and osteogenic stimulus, however to date there have been no studies of HIE in CD. This study aimed to assess the acceptability and feasibility of participating in HIE in adolescents and adults with CD.Methods: Two anonymous questionnaires surveyed adolescents and adults, respecti...

ba0005p21 | Biochemical testing | ECTS2016

Profiles of 25 hydroxyvitamin D and its metabolites 24, 25-dihydroxyvitamin D and 1, 25-dihydroxyvitamin D in vitamin D3 supplementation studies

Tang Jonathan , Nicholls Holly , Dutton John , Piec Isabelle , Washbourne Christopher , Saleh L , Novak A , Close G , Macdonald H , Jackson S , Greeves J , Fraser William

Background: Vitamin D plays an important role in calcium and phosphate homeostasis. Circulating 25 hydroxyvitamin D [25(OH)D] is metabolised into its biologically active form 1,25-dihydroxyvitamin D [1,25-d(OH)D] by the actions of 1α hydroxylase, and into inactive 2metabolite 24,25-dihydroxyvitamin D [24,25-d(OH)D] by 24-hydroxylase. Recent studies suggest the production of 1,25-d(OH)D) from 25(OH)D is 24,25-d(OH)D dependent. Genetic mutations of CYP24A1 gene resulting in...

ba0007p100 | (1) | ICCBH2019

High-resolution MRI assessment of the muscle-fat-bone unit in young adults with childhood onset Crohn's disease

Steell Lewis , Johnston Blair , Ahmed S Faisal , Gaya Daniel R , MacDonald Jonathan , Seenan John Paul , Russell Richard K , Gray Stuart , Wong Jarod

Objective: Childhood onset Crohn’s disease (CO-CD) is associated with musculoskeletal deficits. However, there are limited data regarding muscle-bone outcomes in adults with CO-CD. The current study aimed to comprehensively assess the muscle-fat-bone unit in young adults with CO-CD, using novel methods of MRI, in comparison with healthy controls.Methods: Trabecular microarchitecture and cortical geometry of the distal femur were assessed using 3T mi...

ba0001pp95 | Bone development/growth and fracture repair | ECTS2013

Osteometric parameters of mature rats mandible molars at implantation in the tibia of biogenic hydroxyapatite

Vladislav Luzin , Vitali Morozov , Helen Morozova

Traumatic injuries of the bones of various etiologies are accompanied not only a violation of their integrity, but also the development of a system osteopenic syndrome, which causes disorder neurohumoral regulation of the organism and has a negative effect on the structural and functional state of the skeletal tissues of other parts of the skeleton. The information concerning the characteristics of changes in the parameters of growth of molars of the mandible in the literature...

ba0002p7 | (1) | ICCBH2013

Osteometric parameters of mature rats mandible molars when implanted in the tibia biogenic hydroxyapatite, saturated with iron

Vladislav Luzin , Vitaly Morozov , Helen Morozova

Objectives: The aim of the study was to examine experimentally the possibility smoothing of adverse effects of «fracture syndrome» in the parameters of the growth of the molar row of the mandible with implant in the proximal tibial shaft biogenic hydroxyapatite, saturated with iron at concentrations of 0.05, 0.15 and 0.50%.Methods: For the experiment were collected 168 white mature male rats were divided into four groups: 1st group, animals tha...

ba0007p193 | (1) | ICCBH2019

Double trouble: A case of trisomy 21 and achondroplasia

Todd Stacey , Mason Avril , McDevitt Helen

Background: The co-occurrence of achondroplasia with Trisomy 21 is extremely rare, with only a handful of published case reports in the literature.Presenting Problem: A baby girl had an antenatal diagnosis of incomplete atrioventricular septal defect (AVSD), and a subsequent postnatal diagnosis of Trisomy 21. At birth she had respiratory distress and required CPAP until 5 days of life. AVSD was confirmed on postnatal ECHO. Phenotypic traits consistent wi...