bone formation Articles
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Targeted disruption of the wnt regulator kremen induces limb defects and high bone density
Kremen1 and Kremen2 (Krm1 and Krm2) are transmembrane coreceptors for Dickkopf1 (Dkk1), an antagonist of Wnt/β-catenin signaling. The physiological relevance of Kremen proteins in mammals as Wnt modulators is unresolved. We generated and characterized Krm mutant mice and found that double mutants show enhanced Wnt signaling accompanied by ectopic postaxial forelimb digits and expanded apical ...
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The relation between leptin and osteocalcin and various anthropometric measures in preterm and full-term babies
Leptin plays a role in foetal growth. Osteocalcin, a bone specific protein, reflects bone formation rate. This study aims to investigate the effect of leptin and osteocalcin on physical growth of newborns. About 40 full-term and 41 preterm healthy babies were included. Umbilical cord samples were analysed for leptin and osteocalcin. Anthropometric measurements were taken on newborns. Leptin was ...
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Enhancing low cost stainless steel implants: bioactive silica–based sol–gel coatings with wollastonite particles
A hybrid organic–inorganic sol–gel coating with the addition of wollastonite particles is used as a potential solution to improve performance of low cost AISI 316L stainless steel. This work is focused on characterising the coatings by studying their synthesis and deposition, electrochemical, and in vitro and in vivo response. The coated implants presented in vitro Ca/P–rich ...
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Mesenchymal Stem Cell Microenvironment
Mesenchymal stem cells (MSC) differentiate towards multiple lineages that participate in bone formation and are often utilized for bone regeneration therapy. A 2019 review by Lee et al. explores the endogenous mechanical and biochemical environment of MSCs. Additionally, the article highlights the essential factors that lead to bone repair and how these factors can be leveraged to improve bone ...
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Programmed Drug Release of rhBMP-2 for Bone Healing
Summary: Non-union of bone fractures can cause pain and disabilities. Amongst certain fracture types, in specific age groups, the incidence of non-union is over 8% in the United States and over 3.6% of all fractures in the UK. Fracture non-unions have lifelong consequences and a debilitating impact in patients' life. Bone-grafts, allografts and xenograft are currently used to treat bone ...
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Neutral atom beam technique enhances bioactivity of PEEK
Abstract Polyetheretherketone (PEEK) is currently gaining popularity in orthopedic and spinal applications but has potential drawbacks in use. PEEK is biocompatible, similar in elasticity to bone, and radiolucent; however, it has been shown to be inert and does not integrate well with bone. Recent efforts have focused on increasing the bioactivity of PEEK by modifying the surface to improve the ...
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Polysaccharides Function as Backbone for Embryonic Osteogenesis
Osteogenesis, or new bone formation, begins in the early stages of embryonic development and continues postnatally until skeletal maturity is reached in early adulthood. Osteogenesis reoccurs in the event of bone trauma, such as a fracture or surgically created defect. Bone mass can also increase in response to chronic weight bearing from daily use or decrease due to a lack of movement or applied ...
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3D Bioprinting Of Prevascularised Implants For The Repair Of Critically-Sized Bone Defects
By combining different cell populations in a fibrin bioink, researchers from Trinity College Dublin, Royal College of Surgeons in Ireland and University of Illinois Chicago were able to sprout an in vitro microvessel network that was then exploited to prevascularise a 3D printed scaffold implanted in a critical size femoral defect using REGENHU bioprinter. This dual approach was observed to ...
By Regenhu
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Do You Really Know Hydroxyapatite?
As an important branch of biomedical materials, bioceramics are mainly used to manufacture hard tissue repair devices and artificial organs in vivo, and generally have good biocompatibility. According to the chemical activity in the physiological environment, bioceramics can be divided into three types: Nearly inert bioceramics, only weak or no chemical reaction occurs when exposed to the ...
By Matexcel
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Peptides for Osteoporosis Research
Introduction to OsteoporosisOsteoporosis is a systemic multi-causal skeletal disease that is prone to fractures due to changes in systemic bone mass and microstructure of bone tissue, resulting in increased bone fragility. Osteoporosis is a type of disease that is difficult to cure. According to the etiology, it can be divided into primary osteoporosis, secondary osteoporosis and idiopathic ...
By BOC Sciences
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Proximal Femur Responses to Sequential Therapy With Abaloparatide Followed by Alendronate in Postmenopausal Women With Osteoporosis by 3D Modeling of Hip Dual-Energy X-Ray Absorptiometry (DXA)
ABSTRACT Previous subgroup analyses from the ACTIVE trial in women with postmenopausal osteoporosis (NCT01343004) using three-dimensional (3D)-processing of dual X-ray absorptiometry (DXA) scans indicated greater increases in total hip cortical volumetric bone mineral density (Ct.vBMD) and estimated indices of hip strength following 18 months of abaloparatide (ABL) versus placebo or ...
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