Research Topics
Species | O MakitieSummaryAffiliation: University of Helsinki Country: Finland Publications
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Detail Information
Publications
High-dose vitamin d intervention in infants--effects on vitamin d status, calcium homeostasis, and bone strengthElisa Holmlund-Suila
Pediatric Endocrinology and Metabolic Bone Diseases, Children s Hospital, Helsinki University Central Hospital and University of Helsinki, P O Box 281, FIN 00029 HUS, Helsinki, Finland
J Clin Endocrinol Metab 97:4139-47. 2012..Guidelines in Finland recommend 10 μg of vitamin D3 daily for all infants. Recent observations suggest that this may be insufficient to maintain optimal serum 25-hydroxyvitamin D (S-25-OHD)...
Mutations in LRP5 cause primary osteoporosis without features of OI by reducing Wnt signaling activityJohanna Korvala
Oulu Center for Cell Matrix Research, Biocenter and Department of Medical Biochemistry and Molecular Biology, University of Oulu, Oulu, Finland
BMC Med Genet 13:26. 2012..We have previously shown that primary osteoporosis can be caused by heterozygous missense mutations in the Low-density lipoprotein receptor-related protein 5 (LRP5) gene, and the role of LRP5 is further investigated here...
Osteoporosis: from molecular mechanisms to progress in treatmentOuti Makitie
Hospital for Children and Adolescents, University of Helsinki, Finland
Ann Med 37:276-7. 2005
Early-onset metaphyseal chondrodysplasia type Schmid associated with a COL10A1 frame-shift mutation and impaired trimerization of wild-type α1(X) protein chainsOuti Makitie
Department of Pediatrics, Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
J Orthop Res 28:1497-501. 2010..We speculate that complete loss of mutant transcripts yields COL10A1 haploinsufficiency and late clinical presentation while incomplete loss of mutant transcripts yields dominant-negative effects with early clinical presentation...
Early treatment improves growth and biochemical and radiographic outcome in X-linked hypophosphatemic ricketsO Makitie
Division of Endocrinology, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada M5G 1X8
J Clin Endocrinol Metab 88:3591-7. 2003..These data suggest that treatment commenced in early infancy results in improved outcome in patients with XLH, but does not completely normalize skeletal development...
Schmid type of metaphyseal chondrodysplasia and COL10A1 mutations--findings in 10 patientsOuti Makitie
Division of Genetics and Genomic Biology, Research Institute, Hospital for Sick Children, Toronto, Ontario, Canada
Am J Med Genet A 137:241-8. 2005..Our findings suggest that COL10A1 mutations result in a uniform pattern of growth plate abnormalities. However, the clinical variability in severity among affected individuals is greater than previously thought...
Molecular defects causing skeletal dysplasiasOuti Makitie
Hospital for Children and Adolescents, Pediatric Endocrinology and Metabolic Bone Diseases, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
Endocr Dev 21:78-84. 2011..On the other hand, mutations in different genes can result in similar phenotypes. Careful clinical assessment with thorough radiographic evaluation are of key importance...
Metabolic control and growth during exclusive growth hormone treatment in X-linked hypophosphatemic ricketsOuti Makitie
Hospital for Children and Adolescents, Pediatric Endocrinology and Metabolic Bone Clinic, Helsinki University Hospital, Helsinki, Finland
Horm Res 69:212-20. 2008..GH may improve phosphate balance and height in X-linked hypophosphatemic rickets (XLH). This study evaluated the impact of exclusive rhGH therapy on phosphate homeostasis and growth...
Bone health in autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED): findings in 25 adultsO Makitie
The Hospital for Children and Adolescents, Paediatric Endocrinology, University of Helsinki, Helsinki, Finland
Clin Endocrinol (Oxf) 64:489-94. 2006..The resulting endocrinopathies and their treatment may impact bone health. The purpose of our study was to assess bone health and its correlates in adult patients with APECED...
Clinical and radiographic findings in multiple epiphyseal dysplasia caused by MATN3 mutations: description of 12 patientsOuti Makitie
Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
Am J Med Genet A 125:278-84. 2004..Despite overlap, both clinically and radiographically, with other forms of MED, the described features may help to differentiate this particular form from other entities within the MED spectrum...
Skeletal phenotype in patients with Shwachman-Diamond syndrome and mutations in SBDSO Makitie
Programmes in Genetics and Genomic Biology, Research Institute, The Hospital for Sick Children, Toronto, Ontario, Canada
Clin Genet 65:101-12. 2004..The results suggest that the characteristic skeletal changes are present in all patients with SDS and SBDS mutations, but their severity and localization varies with age. No phenotype-genotype correlation was observed...
Impaired spermatogenesis: an unrecognized feature of cartilage-hair hypoplasiaO M Mäkitie
Hospital for Children and Adolescents, University of Helsinki, Finland
Ann Med 33:201-5. 2001..These features may result from a generalized defect in cell proliferation...
Long-term clinical outcome and carrier phenotype in autosomal recessive hypophosphatemia caused by a novel DMP1 mutationOuti Makitie
Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
J Bone Miner Res 25:2165-74. 2010..The skeletal phenotype in ARHP may be significantly more severe than in other forms of hypophosphatemic rickets...
Autosomal recessive multiple epiphyseal dysplasia with homozygosity for C653S in the DTDST gene: double-layer patella as a reliable signOuti Makitie
Center for the Study of Heritable Connective Tissue Diseases, Research Institute, University of Toronto, Toronto, Ontario M5G 1X8, Canada
Am J Med Genet A 122:187-92. 2003..Hip dysplasia and patella hypermobility dominates the otherwise mild phenotype. These patients further expand the range of causative mutations in the DTD skeletal dysplasia family...
Maternal vitamin D status affects bone growth in early childhood--a prospective cohort studyH T Viljakainen
Hospital for Children and Adolescents, Helsinki University Central Hospital, Tukholmankatu 2C, PO Box 705, 00029 Helsinki, Finland
Osteoporos Int 22:883-91. 2011..Postnatal vitamin D supplementation improved vitamin D status but only partly eliminated the differences in bone variables induced by maternal vitamin D status during the fetal period...
Anemia in children with cartilage-hair hypoplasia is related to body growth and to the insulin-like growth factor systemO Makitie
Hospital for Children and Adolescents, Helsinki, Finland
J Clin Endocrinol Metab 85:563-8. 2000..We conclude that body growth and erythropoiesis share common regulators. One of these is the GH-IGF-I axis; other factors, as not yet identified, may also be important...
Uniparental disomy in cartilage-hair hypoplasiaT Sulisalo
Department of Medical Genetics, University of Helsinki, Finland
Eur J Hum Genet 5:35-42. 1997..These observations show that UPD may occur in an unexpectedly high number of the patients and should be taken into account in the genetic counselling and prenatal diagnostics of CHH families...
Maternal vitamin D status determines bone variables in the newbornH T Viljakainen
Department of Applied Chemistry and Microbiology, Division of Nutrition, P O Box 66, University of Helsinki, FI 00014 Helsinki, Finland
J Clin Endocrinol Metab 95:1749-57. 2010..Maternal vitamin D status may program neonatal skeletal development. The objective here was to determine the association of mothers' vitamin D status with bone variables of their newborns...
Radiographic vertebral morphology: a diagnostic tool in pediatric osteoporosisOuti Makitie
The Hospital for Sick Children, Department of Endocrinology, University of Toronto, ON, Canada
J Pediatr 146:395-401. 2005..To assess the value of spinal radiographs in determining the significance of reductions in bone mass or density in chronically ill children...
Hypercalciuria and kidney function in children with haemophiliaS Ranta
Children s Hospital, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
Haemophilia 19:200-5. 2013..Whether childhood-onset intermittent hypercalciuria contributes to hypertension and renal complications in adulthood remains to be elucidated in future studies...
Scoliosis after solid organ transplantation in children and adolescentsI Helenius
Hospital for Children and Adolescents, Helsinki University Central Hospital, Helsinki, Finland
Am J Transplant 6:324-30. 2006..The risk of scoliosis is increased in patients with solid organ transplantation. Pediatricians treating these patients should be aware of this increased risk to diagnose early curves and to refer these patients to an orthopedic surgeon...
Decreasing incidence and changing pattern of childhood fractures: A population-based studyMervi K Mäyränpää
Department of Pediatric Surgery, Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
J Bone Miner Res 25:2752-9. 2010..Concurrently, the incidence of forearm and upper arm fractures has increased by one-third. The reasons for these epidemiologic changes remain to be elucidated in future studies...
Decreased bone mineral density in adults born with very low birth weight: a cohort studyPetteri Hovi
Hospital for Children and Adolescents, Institute of Clinical Medicine, University of Helsinki, Helsinki, Finland
PLoS Med 6:e1000135. 2009..We hypothesized that VLBW is associated with reduced bone mineral density (BMD) in adulthood...
Bone densitometry in the diagnosis of vertebral fractures in children: accuracy of vertebral fracture assessmentMervi K Mäyränpää
Department of Pediatric Surgery, Helsinki University Hospital, Finland
Bone 41:353-9. 2007..It is unknown whether the method could be used in pediatrics. This study evaluated the diagnostic accuracy of DXA images in vertebral fracture assessment (VFA) in children...
Glucose regulation in young adults with very low birth weightPetteri Hovi
Department of Health Promotion and Chronic Disease Prevention, National Public Health Institute, Helsinki, Finland
N Engl J Med 356:2053-63. 2007..We assessed glucose tolerance and insulin sensitivity and measured serum lipid levels and blood pressure in young adults with very low birth weight...
Incidence and predictors of fractures in children after solid organ transplantation: a 5-year prospective, population-based studyIlkka Helenius
Hospital for Children and Adolescents, Helsinki University Central Hospital, Helsinki, Finland
J Bone Miner Res 21:380-7. 2006..35 fractures/1000 persons/year; p < 0.001) in the study group compared with the control population. Thus, screening of vertebral fractures at regular intervals is recommended, and preventive strategies should be studied...
Reduced body size and shape-related symptoms in young adults born preterm with very low birth weight: Helsinki study of very low birth weight adultsKaroliina Wehkalampi
Department of Health Promotion and Chronic Disease Prevention, National Institute for Health and Welfare, Helsinki, Finland
J Pediatr 157:421-7, 427.e1. 2010....
Dual effect of adipose tissue on bone health during growthHeli T Viljakainen
Hospital for Children and Adolescents, Helsinki University Central Hospital, Biomedicum Helsinki 2, Tukholmankatu 8 C, PO Box 705, 00029 HUS, Helsinki, Finland
Bone 48:212-7. 2011..These findings suggest that normal body fat content is beneficial for bone health in growing children and adolescents while both low and high body fat content have adverse skeletal effects...
Bisphosphonate treatment in craniofacial fibrous dysplasia--a case report and review of the literatureAntti A Makitie
Department of Otolaryngology Head and Neck Surgery, Helsinki University Hospital, P O Box 220, 00029 Helsinki, Finland
Clin Rheumatol 27:809-12. 2008..This line of treatment may be suitable especially for craniofacial FD in which surgical treatment is particularly challenging...
Increased mortality in cartilage-hair hypoplasiaO Makitie
Hospital for Children and Adolescents, Helsinki University Hospital
Arch Dis Child 84:65-67. 2001..Cartilage-hair hypoplasia (CHH) is an autosomal recessive chondrodysplasia with severe growth failure and impaired immunity. Impaired immunity may result in increased mortality...
Bone health in children and adolescents after allogeneic stem cell transplantation: high prevalence of vertebral compression fracturesMervi Taskinen
Division of Hematology Oncology and Stem Cell Transplantation, Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
Cancer 110:442-51. 2007..This cross-sectional study evaluated the overall bone health and the prevalence of vertebral complications after stem cell transplantation (SCT) in prepubertal children and adolescents...
Magnetic resonance imaging findings of the pancreas in patients with Shwachman-Diamond syndrome and mutations in the SBDS geneSanna Toiviainen-Salo
Medical Imaging Center, Helsinki University Hospital, Helsinki, Finland
J Pediatr 152:434-6. 2008..The findings suggest that patients with mutations in the SBDS gene have a characteristic magnetic resonance imaging pattern of fat-replaced pancreas and that SBDS mutations are unlikely in patients without this pattern...
Long-term skeletal consequences of childhood acute lymphoblastic leukemia in adult males: a cohort studyO Makitie
Division of Pediatric Endocrinology and Metabolic Bone Diseases, Children s Hospital, Helsinki University Central Hospital, University of Helsinki, PO Box 281, FIN 00029 Helsinki, Finland
Eur J Endocrinol 168:281-8. 2013..We evaluated skeletal characteristics and their association with ALL therapy in long-term male ALL survivors...
Peripheral quantitative computed tomography (pQCT) reveals alterations in the three-dimensional bone structure in children with haemophiliaS Ranta
Children s Hospital, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
Haemophilia 18:955-61. 2012..Importantly, bone strength at the radius appears equal to healthy children. Prophylactic treatment seems to have a beneficial effect on bone health...
Bone health in children and adolescents after renal transplantationHelena Valta
Hospital for Children and Adolescents, Department of Pediatric Nephrology and Transplantation, University of Helsinki, Helsinki, Finland
J Bone Miner Res 24:1699-708. 2009..The observed BMD results were satisfactory. However, the high (8%) prevalence of vertebral fractures warrants careful evaluation of bone health in these patients...
Shwachman-Diamond syndrome is associated with low-turnover osteoporosisSanna Toiviainen-Salo
Helsinki Medical Imaging Center, Helsinki University Hospital, Helsinki, Finland
Bone 41:965-72. 2007..A skeletal dysplasia is also an integral feature of SDS. The present study assessed prevalence and determinants of osteopenia and osteoporosis in patients with SDS and disease-causing mutations in the SBDS gene...
Low-density lipoprotein receptor-related protein 5 (LRP5) variation in fracture prone childrenAnne Saarinen
Folkhalsan Institute of Genetics, Helsinki, Finland Department of Medical Genetics, University of Helsinki, Helsinki, Finland
Bone 46:940-5. 2010..This study evaluated whether LRP5 variation is implicated in childhood fractures...
Bone biopsy and densitometry findings in a child with Camurati-Engelmann diseaseJonas Bondestam
Department of Pediatrics, Hospital for Children and Adolescents, P O Box 281, 00029 Helsinki, Finland
Clin Rheumatol 26:1773-7. 2007..To our knowledge, this is the first time bone biopsy and bone mineral densitometry studies have been performed and bisphosphonate treatment evaluated in a child with CED...
Impact of aromatase inhibitor therapy on bone turnover, cortical bone growth and vertebral morphology in pre- and peripubertal boys with idiopathic short statureMatti Hero
Pediatric Endocrinology and Metabolic Bone Diseases, Hospital for Children and Adolescents, University of Helsinki, Tukholmankatu 8 A, 5th Floor, PO Box 448, HUS Helsinki FIN 00029, Finland
Horm Res 71:290-7. 2009..70). Aromatase inhibition suppresses bone turnover, possibly through an androgen-mediated effect. In pubertal boys, treatment stimulates cortical bone growth by increasing the testosterone-to-estradiol ratio...
Hirschsprung's disease in cartilage-hair hypoplasia has poor prognosisOuti Makitie
Hospital for Children and Adolescents and the Department of Clinical Genetics, University of Helsinki, Helsinki, Finland
J Pediatr Surg 37:1585-8. 2002..Cartilage-hair hypoplasia (CHH) is a chondrodysplasia with growth failure, impaired immunity, and high incidence of Hirschsprung disease (HD). This study describes the outcome of CHH patients with HD...
Bone health in patients with cloacal exstrophy and persistent cloaca after bladder augmentationSeppo Taskinen
Division of Surgery, Hospital for Children and Adolescents, Helsinki University Hospital, 00290 Helsinki, Finland
J Pediatr Surg 43:700-4. 2008..In this study, the prevalence of osteoporosis was evaluated in patients operated on for cloacal exstrophy or persistent cloaca and who had undergone bladder augmentation...
Osteoporosis in chronically ill childrenEtienne B Sochett
The Hospital for Sick Children, Division of Endocrinology, University of Toronto, Canada
Ann Med 37:286-94. 2005..Early identification and adequate intervention, in selected cases with bisphosphonates, is needed in order to prevent deleterious skeletal complications of osteoporosis in chronically ill children...
Anti-tumor necrosis factor treatment in cherubism--clinical, radiological and histological findings in two childrenM Hero
Childrens Hospital, Helsinki University Central Hospital and University of Helsinki, Helsinki, Finland
Bone 52:347-53. 2013..TNF-α modulator treatment thus does not appear to provide sufficient amelioration for patients suffering from cherubism...
Hirschsprung disease associated with severe cartilage-hair hypoplasiaO Makitie
Hospital for Children and Adolescents, Helsinki University Hospital, PO Box 281, Helsinki, FIN 00029, Finland
J Pediatr 138:929-31. 2001....
The effect of oral glucose tolerance test on serum osteocalcin and bone turnover markers in young adultsP M Paldánius
Children s Hospital, University of Helsinki and Helsinki University Central Hospital, Finland
Calcif Tissue Int 90:90-5. 2012..The observed OGTT-induced changes in bone-derived proteins were partially independent of each other and potentially mediated by different mechanisms...
Impaired bone health in adolescents after liver transplantationH Valta
Department of Pediatric Nephrology and Transplantation, Hospital for Children and Adolescents, University of Helsinki, Finland
Am J Transplant 8:150-7. 2008..004) and higher LS Z-score (p = 0.005) than older patients. In conclusion, adolescent liver recipients are prone to osteoporosis and prevention should be targeted especially to this age group...
Cerebroretinal microangiopathy with calcifications and cystsT Linnankivi
Department of Pediatric Neurology, Hospital for Children and Adolescents, University of Helsinki, Stenbackinkatu 11, FIN 00290 Helsinki, Finland
Neurology 67:1437-43. 2006....
Bone health and growth in glucocorticoid-treated patients with juvenile idiopathic arthritisHelena Valta
Hospital for Children and Adolescents, Metabolic Bone Clinic, University of Helsinki, Helsinki, Finland
J Rheumatol 34:831-6. 2007..To evaluate bone health and growth and their correlates in glucocorticoid (GC)-treated pediatric patients with juvenile idiopathic arthritis (JIA)...
Patients with cartilage-hair hypoplasia have an increased risk for bronchiectasisSanna Toiviainen-Salo
Helsinki Medical Imaging Center, Helsinki University Hospital, Helsinki, Finland
J Pediatr 152:422-8. 2008..To assess the prevalence, predictors, and course of bronchiectasis in patients with cartilage-hair hypoplasia...
The A1330V polymorphism of the low-density lipoprotein receptor-related protein 5 gene (LRP5) associates with low peak bone mass in young healthy menAnne Saarinen
Folkhälsan Institute of Genetics and Department of Medical Genetics, University of Helsinki, Helsinki, Finland
Bone 40:1006-12. 2007..Whether this is due to influence on bone mass acquisition or on bone loss thereafter has not been established...
Skeletal health after intestinal bladder augmentation: findings in 54 patientsSeppo Taskinen
Hospital for Children and Adolescents, Division of Surgery, Helsinki University Hospital, Helsinki, Finland
BJU Int 100:906-10. 2007..To evaluate the risk of osteopenia in patients after intestinal bladder augmentation...
Low density lipoprotein receptor-related protein 5 (LRP5) mutations and osteoporosis, impaired glucose metabolism and hypercholesterolaemiaAnne Saarinen
Folkhalsan Institute of Genetics, University of Helsinki, Helsinki, Finland
Clin Endocrinol (Oxf) 72:481-8. 2010..Animal models implicate a role for LRP5 in lipid and glucose homeostasis. The objective was to evaluate metabolic consequences of LRP5 mutations in humans...
Extended follow-up of the Finnish cartilage-hair hypoplasia cohort confirms high incidence of non-Hodgkin lymphoma and basal cell carcinomaMervi Taskinen
Hospital for Children and Adolescents, Helsinki University Central Hospital, Helsinki, Finland
Am J Med Genet A 146:2370-5. 2008..The underlying pathogenetic mechanisms remain to be elucidated in future studies. Careful follow-up, extending beyond pediatric age, is warranted for early diagnosis of malignancies...
Vertebral morphology in aromatase inhibitor-treated males with idiopathic short stature or constitutional delay of pubertyMatti Hero
Pediatric Endocrinology and Metabolic Bone Diseases, Hospital for Children and Adolescents, University of Helsinki, Helsinki, Finland
J Bone Miner Res 25:1536-43. 2010..If AIs are used in growth indications, follow-up of vertebral morphology is indicated...
Intestinal bladder augmentation at school age has no adverse effects on growthSeppo Taskinen
Department of Pediatric Surgery, Hospital for Children and Adolescents, University of Helsinki, Stenbackinkatu 11, 00290 Helsinki, Finland
J Pediatr Urol 4:40-2. 2008..Intestinal bladder augmentation predisposes the patient to many complications. The aim of this study was to determine whether augmentation has an adverse effect on growth...
Genitopatellar syndrome in an adolescent female with severe osteoporosis and endocrine abnormalitiesMaila Penttinen
Clinical Genetics Unit, Department of Pediatrics, Turku University Hospital, Turku, Finland
Am J Med Genet A 149:451-5. 2009..We suggest that these novel findings are also manifestations of GPS...
Chondrocyte cell death and intracellular distribution of COMP and type IX collagen in the pseudoachondroplasia growth plateJacqueline T Hecht
Division of Genetics and Genomic Biology, The Research Institute, University of Toronto, The Hospital for Sick Children, Toronto, Canada
J Orthop Res 22:759-67. 2004..These results also add to the increasing evidence that PSACH and EDM1 are rER storage diseases and that impaired linear growth and joint erosion are caused by the disruptive effect of massive amounts of COMP within the chondrocytes...
Parathyroid gland dysfunction in 22q11.2 deletion syndromeFayza Al Jenaidi
Division of Endocrinology, The Hospital for Sick Children, University of Toronto, Toronto, Canada
Horm Res 67:117-22. 2007..22q11 deletion syndrome (22q11DS) is characterized by conotruncal cardiac defects and hypoplasia of parathyroid glands and thymus, which result in variable hypoparathyroidism (HPT) and immune deficiency...
Neonatal, severe primary hyperparathyroidism: a 7-year clinical and radiological follow-up of one patientAndrea S Doria
Department of Diagnostic Imaging, The Hospital for Sick Children, University of Toronto, 555 University Avenue, Toronto, Ontario, Canada
Pediatr Radiol 32:684-9. 2002..This paper demonstrates the importance of prompt diagnosis and management in neonatal hyperparathyroidism and the role of various imaging modalities in its diagnosis and follow-up...
Early-onset osteoarthritis due to otospondylomegaepiphyseal dysplasia in a family with a novel splicing mutation of the COL11A2 geneTadej Avcin
Division of Rheumatology, The Hospital for Sick Children, Toronto, Ontario, Canada
J Rheumatol 35:920-6. 2008..To evaluate an approach to the clinical, radiographic, and molecular diagnosis of an underlying skeletal dysplasia in adults presenting with early-onset polyarticular osteoarthritis (OA)...
