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Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research

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https://www.readbyqxmd.com/read/28218468/igf-1-receptor-expression-on-circulating-osteoblast-progenitor-cells-predicts-tissue-based-bone-formation-rate-and-response-to-teriparatide-in-premenopausal-women-with-idiopathic-osteoporosis
#1
Adi Cohen, Stavroula Kousteni, Brygida Bisikirska, Jayesh G Shah, J Sanil Manavalan, Robert R Recker, Joan Lappe, David W Dempster, Hua Zhou, Donald J McMahon, Mariana Bucovsky, Mafo Kamanda-Kosseh, Julie Stubby, Elizabeth Shane
We have previously reported that premenopausal women with idiopathic osteoporosis (IOP) have profound microarchitectural deficiencies and heterogeneous bone remodeling. Those with the lowest bone formation rate have higher baseline serum IGF-1 levels and less robust response to teriparatide. Because IGF-1 stimulates bone formation and is critical for teriparatide action on osteoblasts, these findings suggest a state of IGF-1 resistance in some IOP women. To further investigate the hypothesis that osteoblast and IGF-1 related mechanisms mediate differential responsiveness to teriparatide in IOP, we studied circulating osteoblast progenitor (COP) cells and their IGF-1 receptor (IGF-1R) expression...
February 20, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28214296/abnormally-high-and-heterogeneous-bone-matrix-mineralization-after-childhood-solid-organ-transplantation-a-complex-pathology-of-low-bone-turnover-and-local-defects-in-mineralization
#2
Nadja Fratzl-Zelman, Helena Valta, Renata C Pereira, Barbara M Misof, Paul Roschger, Hannu Jalanko, Kathrine Wesseling-Perry, Klaus Klaushofer, Outi Mäkitie
Chronic renal, liver and heart failure in children associates with multiple skeletal complications. Increased fracture incidence often persists after transplantation and could be related to alterations in bone material properties. In the present cohort study we evaluated bone mineralization density distribution (BMDD) by quantitative backscattered electron imaging (qBEI) in 23 pediatric solid organ allograft recipients with suspected osteoporosis. We measured BMDD in the entire cross-sectional area of transiliac bone biopsies obtained from kidney (n = 9), liver (n = 9) and heart (n = 5) transplant recipients (aged 7...
February 18, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28206698/fkbp10-deletion-in-osteoblasts-leads-to-qualitative-defects-in-bone
#3
Caressa D Lietman, Joohyun Lim, Ingo Grafe, Yuqing Chen, Hao Ding, Xiaohong Bi, Catherine G Ambrose, Nadja Fratzl-Zelman, Paul Roschger, Klaus Klaushofer, Wolfgang Wagermaier, Ingo Schmidt, Peter Fratzl, Jyoti Rai, MaryAnn Weis, David Eyre, Douglas R Keene, Deborah Krakow, Brendan H Lee
Osteogenesis Imperfecta (OI), also known as brittle bone disease, displays a spectrum of clinical severity from mild (OI type I) to severe early lethality (OI type II), with clinical features including low bone mass, fractures and deformities. Mutations in the FK506 Binding Protein 10 (FKBP10), gene encoding the 65KDa protein FKBP65, cause a recessive form of OI and Bruck syndrome, the latter being characterized by joint contractures in addition to low bone mass. We previously showed that Fkbp10 expression is limited to bone, tendon and ligaments in postnatal tissues...
February 16, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28181712/association-of-body-size-at-birth-and-childhood-growth-with-hip-fractures-in-older-age-an-exploratory-follow-up-of-the-helsinki-birth-cohort-study
#4
Tuija M Mikkola, Mikaela B von Bonsdorff, Clive Osmond, Minna K Salonen, Eero Kajantie, Johan G Eriksson
Childhood growth has been linked with bone properties in adulthood while less is known about the contribution of early growth to bone fracture risk. We investigated the association of body size at birth and childhood growth with hip fractures and pharmacotherapy for osteoporosis in older age. Men and women, born full term, from the Helsinki Birth Cohort Study (n = 8,345) were followed up until the age of 68 to 80 years. Height and weight from birth to 11 years were obtained from health care records and diagnoses of hip fractures and osteoporosis drug purchases from national registers...
February 9, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28181695/later-age-at-onset-of-independent-walking-is-associated-with-lower-bone-strength-at-fracture-prone-sites-in-older-men
#5
Alex Ireland, Stella Muthuri, Joern Rittweger, Judith E Adams, Kate A Ward, Diana Kuh, Rachel Cooper
Later age at onset of independent walking is associated with lower leg bone strength in childhood and adolescence. However it is unknown whether these associations persist into older age, or whether they are evident at axial (central) or upper limb sites. Therefore we examined walking age obtained at 2y and bone outcomes obtained by dual-energy X-ray absorptiometry (DXA) and peripheral quantitative computed tomography (pQCT) scans at 60-64y in a nationally-representative cohort study of British people, the MRC National Survey of Health and Development...
February 9, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28181694/a-genome-wide-association-study-identifies-two-sex-specific-loci-at-sptb-and-izumo3-influencing-pediatric-bone-mineral-density-at-multiple-skeletal-sites
#6
Alessandra Chesi, Jonathan A Mitchell, Heidi J Kalkwarf, Jonathan P Bradfield, Joan M Lappe, Diana L Cousminer, Sani M Roy, Shana E McCormack, Vicente Gilsanz, Sharon E Oberfield, Hakon Hakonarson, John A Shepherd, Andrea Kelly, Babette S Zemel, Struan F A Grant
Failure to achieve optimal bone mineral accretion during childhood and adolescence results in subsequent suboptimal peak bone mass, contributing to osteoporosis risk later in life. To identify novel genetic factors that influence pediatric bone mass at discrete skeletal sites, we performed a sex-stratified genome-wide association study of areal bone mineral density (BMD) measured by dual energy X-ray absorptiometry at the 1/3 distal radius, spine, total hip and femoral neck in a cohort of 933 healthy European American children...
February 9, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28177161/vdr-in-osteoblast-lineage-cells-primarily-mediates-vitamin-d-treatment-induced-increase-in-bone-mass-by-suppressing-bone-resorptiontdg-ang-tok
#7
Yuko Nakamichi, Nobuyuki Udagawa, Kanji Horibe, Toshihide Mizoguchi, Yoko Yamamoto, Takashi Nakamura, Akihiro Hosoya, Shigeaki Kato, Tatsuo Suda, Naoyuki Takahashi
Long-term treatment with active vitamin D [1α,25(OH)2 D3 ] and its derivatives is effective for increasing bone mass in patients with primary and secondary osteoporosis. Derivatives of 1α,25(OH)2 D3 , including eldecalcitol (ELD), exert their actions through the vitamin D receptor (VDR). ELD is more resistant to metabolic degradation than 1α,25(OH)2 D3 . It is reported that ELD treatment causes a net increase in bone mass by suppressing bone resorption rather than by increasing bone formation in animals and humans...
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28177159/connexin43-mutant-patient-derived-induced-pluripotent-stem-cells-exhibit-altered-differentiation-potential
#8
Jessica L Esseltine, Qing Shao, Courtney Brooks, Jacinda Sampson, Dean H Betts, Cheryle Séguin, Dale W Laird
We present for the first time the generation of induced pluripotent stem cells (iPSCs) from a patient with a connexin-linked disease. The importance of gap junctional intercellular communication in bone homeostasis is exemplified by the autosomal dominant developmental disorder oculodentodigital dysplasia (ODDD) which is linked to mutations in the GJA1 (Cx43) gene. ODDD is characterised by craniofacial malformations, ophthalmic deficits, enamel hypoplasia and syndactyly. In addition to harboring a Cx43 p.V216L mutation, ODDD iPSCs exhibit reduced Cx43 mRNA and protein abundance when compared to control iPSCs and display impaired channel function...
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28177155/a-chaperone-complex-formed-by-hsp47-fkbp65-and-bip-modulates-telopeptide-lysyl-hydroxylation-of-type-i-procollagen
#9
Ivan Duran, Jorge H Martin, Mary Ann Weis, Pavel Krejci, Peter Konik, Bing Li, Yasemin Alanay, Caressa Lietman, Brendan Lee, David Eyre, Daniel H Cohn, Deborah Krakow
Lysine hydroxylation of type I collagen telopeptides varies from tissue to tissue and these distinct hydroxylation patterns modulate collagen crosslinking to generate a unique extracellular matrix. Abnormalities in these patterns contribute to pathologies that include osteogenesis imperfecta (OI), fibrosis and cancer. Telopeptide procollagen modifications are carried out by lysyl hydroxylase 2 (LH2), however, little is known regarding how this enzyme regulates hydroxylation patterns. We identified an ER complex of resident chaperones that includes HSP47, FKBP65 and BiP regulating the activity of LH2...
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28177151/rankl-independent-osteoclastogenesis-a-long-standing-controversy
#10
Sakae Tanaka
No abstract text is available yet for this article.
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28177150/commentary-the-skeleton-is-a-storehouse-of-mineral-that-is-plundered-during-lactation-and-fully-replenished-afterwards
#11
Christopher S Kovacs
During lactation, mammals resorb mineral from the maternal skeleton to provide calcium to milk. Rodents lose 25-35% of skeletal ash weight, ash calcium content, and bone mineral content by DXA, and have compromised material properties of bone, as assessed by crushing vertebrae and 3-pt bend tests of femora or tibiae. The strength, stiffness, and toughness of vertebrae, femora, and tibiae are reduced by as much as 60%. The effects of lactation are not uniform throughout the skeleton, but instead resorption is much more marked in the trabecular-rich spine than in the appendicular skeleton or whole body...
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28177141/coupling-of-bone-resorption-and-formation-in-real-time-new-knowledge-gained-from-human-haversian-bmus
#12
Nicolai Ernlund Lassen, Thomas Levin Andersen, Gro Grunnet Pløen, Kent Søe, Ellen Margrethe Hauge, Søren Harving, Gete Ester Toft Eschen, Jean-Marie Delaisse
It is well-known that bone remodeling starts with a resorption event and ends with bone formation. However, what happens in between and how resorption and formation are coupled remains mostly unknown. Remodeling is achieved by so-called basic multicellular units (BMUs), which are local teams of osteoclasts, osteoblasts, and reversal cells recently proven identical with osteoprogenitors. Their organization within a BMU cannot be appropriately analyzed in common histology. The originality of the present study is to capture the events ranging from initiation of resorption to onset of formation as a functional continuum...
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28177140/serum-phosphate-is-associated-with-fracture-risk-the-rotterdam-study-and-mros
#13
N Campos-Obando, W N H Koek, E R Hooker, B C J van der Eerden, H A Pols, A Hofman, J P T M van Leeuwen, A G Uitterlinden, C M Nielson, M C Zillikens
Extreme phosphate levels (P) have been associated with mineralization defects and increased fracture risk. Whether P within normal range is related to bone health in the general population is not well understood. To investigate the association of P with bone mineral density (BMD) and fracture risk, we assessed two population-based cohorts: the Dutch Rotterdam Study (RS-I, RS-II, RS-III; n = 6791) and the US Osteoporotic Fractures in Men (MrOS; n = 5425) study. The relationship of P with lumbar spine (LS) and femoral neck (FN) BMD was tested in all cohorts via linear models; fracture risk was tested in RS-I, RS-II and MrOS through Cox models, after follow-up of 8...
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28177139/canalization-leads-to-similar-whole-bone-mechanical-function-at-maturity-in-two-inbred-strains-of-mice
#14
Stephen H Schlecht, Lauren M Smith, Melissa A Ramcharan, Erin M R Bigelow, Bonnie T Nolan, Noah J Mathis, Amber Cathey, Eugene Manley, Rajasree Menon, Richard C McEachin, Joseph H Nadeau, Karl J Jepsen
Previously, we showed that cortical mineralization is coordinately adjusted to mechanically offset external bone size differences between A/J (narrow) and C57BL/6J (wide) mouse femora to achieve whole bone strength equivalence at adulthood. The identity of the genes and their interactions that are responsible for establishing this homeostatic state (i.e., canalization) remain unknown. We hypothesize that these inbred strains, whose inter-individual differences in bone structure and material properties mimic that observed among humans, achieve functional homeostasis by differentially adjusting key molecular pathways regulating external bone size and mineralization throughout growth...
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28176386/long-term-randomized-trial-of-intensive-versus-symptomatic-management-in-paget-s-disease-of-bone-the-prism-ez-study
#15
Adrian Tan, Kirsteen Goodman, Allan Walker, Jemma Hudson, Graeme S MacLennan, Peter L Selby, William D Fraser, Stuart H Ralston
It has been suggested that normalization of bone turnover may improve clinical outcome in Paget's disease of bone (PDB) by preventing complications such as fractures and the development of osteoarthritis. Here we investigated the long-term effects of a treatment strategy that aimed to normalize bone turnover in PDB with that of symptomatic treatment. The study group comprised 502 subjects who were enrolled into a 3-year extension of the Paget's Disease: Randomized Trial of Intensive versus Symptomatic Management (PRISM) study...
February 8, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28138982/relationship-between-low-bone-mineral-density-and-fractures-with-incident-cardiovascular-disease-a-systematic-review-and-meta-analysis
#16
Nicola Veronese, Brendon Stubbs, Gaetano Crepaldi, Marco Solmi, Cyrus Cooper, Nicolas Cw Harvey, Jean-Yves Reginster, Renè Rizzoli, Roberto Civitelli, Patricia Schofield, Stefania Maggi, Sarah E Lamb
An increasing evidence base suggests that low bone mineral density (BMD) and fractures are associated with cardiovascular disease (CVD). We conducted a systematic review and meta-analysis summarizing the evidence of low BMD and fractures as risk factors for future CVD. Two independent authors searched major databases from inception to 1(st) August 2016 for longitudinal studies reporting data on CVD incidence (overall and specific CVD) and BMD status and fractures. The association between low BMD, fractures and CVD across longitudinal studies was explored by calculating pooled adjusted hazard ratios (HRs) ± 95% confidence intervals (CIs) with a random-effects meta-analysis...
January 31, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28135013/low-testosterone-but-not-estradiol-is-associated-with-incident-falls-in-older-men-the-international-mros-study
#17
Liesbeth Vandenput, Dan Mellström, Gail A Laughlin, Peggy M Cawthon, Jane A Cauley, Andrew R Hoffman, Magnus K Karlsson, Björn E Rosengren, Östen Ljunggren, Maria Nethander, Anna L Eriksson, Mattias Lorentzon, Jason Leung, Timothy Kwok, Eric S Orwoll, Claes Ohlsson
Fracture risk is determined by bone strength and the risk of falls. The relationship between serum sex steroids and bone strength parameters in men is well known, while the predictive value of sex steroids for falls is less studied. The aim of this study was to assess the associations between serum testosterone (T) and estradiol (E2) and the likelihood of falls. Older men (aged ≥65 years) from the US (n = 1919), Sweden (n = 2495), and Hong Kong (n = 1469) participating in the Osteoporotic Fractures in men study had baseline T and E2 analyzed by mass spectrometry...
January 30, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28128866/cyclin-dependent-kinase-inhibitor-1-deficient-mice-are-susceptible-to-osteoarthritis-associated-with-enhanced-inflammation
#18
Shinsuke Kihara, Shinya Hayashi, Shingo Hashimoto, Noriyuki Kanzaki, Koji Takayama, Tomoyuki Matsumoto, Nobuaki Chinzei, Kenjiro Iwasa, Masahiko Haneda, Kazuhiro Takeuchi, Kotaro Nishida, Ryosuke Kuroda
Osteoarthritis (OA) is a multifactorial disease, and recent data suggested that cell cycle-related proteins play a role in OA pathology. Cyclin-dependent kinase (CDK) inhibitor 1 (p21) regulates activation of other CDKs, and recently, we reported that p21 deficiency induced susceptibility to OA induced by destabilization of the medial meniscus (DMM) surgery through STAT3-signaling activation. However, the mechanisms associated with why p21 deficiency led to susceptibility to OA by the STAT3 pathway remain unknown...
January 27, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28125170/the-birth-of-jbmr-plus
#19
EDITORIAL
Peter Ebeling, Juliet Compston
No abstract text is available yet for this article.
January 26, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28109138/adaptations-in-the-microarchitecture-and-load-distribution-of-maternal-cortical-and-trabecular-bone-in-response-to-multiple-reproductive-cycles-in-rats
#20
Chantal Mj de Bakker, Allison R Altman-Singles, Yihan Li, Wei-Ju Tseng, Connie Li, X Sherry Liu
Pregnancy, lactation, and weaning result in dramatic changes in maternal calcium metabolism. In particular, the increased calcium demand during lactation causes a substantial degree of maternal bone loss. This reproductive bone loss has been suggested to be largely reversible, as multiple clinical studies have found that parity and lactation history have no adverse effect on postmenopausal fracture risk. However, the precise effects of pregnancy, lactation, and post-weaning recovery on maternal bone structure are not well understood...
January 21, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
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