Searchable abstracts of presentations at key conferences on calcified tissues

ba0001pp304 | Muscle, physical activity and bone | ECTS2013

Everyday activity, important factors and quality of life in children and youths with osteogenesis imperfecta

Lowing Kristina , Hagberg Maude , Astrom Eva

Osteogenesis Imperfecta (OI) is in most cases a congenital disease of collagen. The mutations have been reported in COLIA1 and COLIA2 genes, localised to chromosomes 17 and 7 respectively. The incidence at birth is 6–20/100 000. Children and youths with OI often display a complex and heterogeneous picture with fragile skeleton, fractures, curvature in the long bones, short stature, pain and limitations in mobility and everyday activity. The impact of those factors for the...

ba0001pp507 | Paediatric bone disease | ECTS2013

Perceived activity capability in children and adolescents with osteogenesis imperfecta

Hagberg Maud , Lowing Kristina , Astrom Eva

Introduction: Osteogenesis imperfecta (OI) is a genetic disorder which mainly affects the collagen in the bone mass with fractures and deformities as the main symptoms. In OI there is a great variation in dysfunction related to the disease. Mobility and activities related to mobility are often most difficult. The objective for this study was to find a relevant, valid and reliable instrument to assess the children’s activity capability.Method and par...

ba0001pp1 | Clinical case posters | ECTS2013

Ten years follow up after prenatal transplantation of fetal mesenchymal stem cell in a patient with severe osteogenesis imperfecta

Gotherstrom Cecilia , Blanc Katarina Le , Astrom Eva , Taslimi Jahan , Graham Gail E , Ewald Uwe , Westgren Magnus

Background: Treatment with multipotent mesenchymal stromal cells (MSC) has the potential to ameliorate mesodermal disorders.Objective: To treat severe osteogenesis imperfecta (OI) with fetal MSC.Methods: Ten years ago, we treated a fetus with OI type III (COL1A2: c.3008G>A, p.Gly1003Asp) in utero with fetal HLA-mismatched MSC. The procedure was uncomplicated. At the age of 4 months i.v. pamidronete treatment was starte...

ba0001pp280 | Genetics | ECTS2013

Association between dentinogenesis imperfecta and mutations in COLIA1 and COLIA2 genes

Andersson Kristofer , Dahllof Goran , Astrom Eva , Rubin C-J , Kindmark A , Lindahl Katarina , Ljunggren Osten , Malmgren Barbro

Introduction: Dentinogenesis imperfecta (DI) is a common dental aberration in patients with osteogenesis imperfecta (OI). Mutations that cause abnormal collagen chains will cause more serious types of OI and it has been claimed that DI should be a marker for qualitative defected collagen. It has also been supposed that normal development of teeth may be more dependent on normal α2(I) than normal α1(I) chains which are encoded by COLIA2 and COLIA1 ge...

ba0001pp492 | Other diseases of bone and mineral metabolism | ECTS2013

Allele dependent silencing of collagen type I using small interfering RNAs targeting 3′UTR indels – a novel therapeutic approach in osteogenesis imperfecta

Lindahl Katarina , Kindmark Andreas , Laxman Navya , Astrom Eva , Rubin Carl-Johan , Ljunggren Osten

Abstract: Osteogenesis imperfecta, also known as ‘brittle bone disease’, is a heterogeneous disorder of connective tissue generally caused by dominant mutations in the genes COL1A1 and COL1A2, encoding the α1 and α2 chains of type I (pro)collagen. Symptomatic patients are usually prescribed bisphosphonates, but this treatment is neither curative nor sufficient. A promising field is gene silencing through RNA interference. In this study, small interfering RN...