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Bone Resorption

Bone resorption is the physiological process by which osteoclasts break down bone tissue, releasing minerlas, matrix, and growth factors into the bloodstream.
This process is essential for the maintenance and remodeling of healthy bone structure.
Dysregulation of bone resorption can lead to conditions such as osteoporosis, Paget's disease, and rheumatoid arthrtis.
Researchers studying bone resorption utilize a variety of in vitro and in vivo models to investigate the underlying cellular and molecular mechanisms.
Optimizing these research protocols is crucial for enhancing the reproducibility and accuracy of findings in this important area of skeletal biology.

Most cited protocols related to «Bone Resorption»

This study was performed to evaluate the relative roles of Mmp9 and Mmp14 in regulating osteoclast function and the physiological and pathological consequences of their targeting on bone homeostasis. These objectives were addressed by (i) determining the MMP profile selectively expressed in mouse osteoclasts in vitro and in vivo, (ii) characterizing the cooperative role of Mmp9/Mmp14 in controlling bone resorption and type I collagenolysis by mouse osteoclasts in vitro, (iii) demonstrating the utility of dual MMP9 and MMP14 blockade in regulating human osteoclast-dependent bone resorption, and (iv) defining the cooperative role of Mmp9/Mmp14 in controlling mouse osteoclast-dependent bone resorption during physiologic versus pathologic bone resorption in vivo. All data presented here have been replicated in independent cohorts of three or more mice or in three or more biological replicates for in vitro experiments. Samples were assigned randomly to the experimental groups. Data collection for each experiment is detailed in the respective figures, figure legends, and methods. For genotyping primers and quantitative real-time PCR primers, see tables S1 and S2, respectively. Individual subject-level data for experiments where n < 20 are included in data file S1. Full images of Western blots are presented in data file S2.
Publication 2020
Biopharmaceuticals Bone Resorption Bones Homeostasis Homo sapiens MMP9 protein, human MMP14 protein, human Mus Oligonucleotide Primers Osteoclasts physiology Real-Time Polymerase Chain Reaction Western Blot
Whole hind paws were fixed in 10% formalin, decalcified, trimmed and embedded. Sections were prepared from the tissue blocks and stained with hematoxylin and eosin (H&E) and Safranin O (HistoTox, Boulder CO). Histopathological scoring was performed as described below. Joints of arthritic mice were given scores of 0–4 for inflammation, according to the following criteria: 0 = normal; 1 = minimal infiltration of inflammatory cells in periarticular area; 2 = mild infiltration; 3 = moderate infiltration; and 4 = marked infiltration. Joints of arthritic mice were given scores of 0–4 for bone resorption, according to the following criteria: 0 = normal; 1 = minimal (small areas of resorption, not readily apparent on low magnification); 2 = mild (more numerous areas of resorption, not readily apparent on low magnification, in trabecular or cortical bone); 3 = moderate (obvious resorption of trabecular and cortical bone, without full thickness defects in the cortex; loss of some trabeculae; lesions apparent on low magnification); and 4 = marked (full-thickness defects in the cortical bone and marked trabecular bone loss). Cartilage depletion was identified by presence of diminished Safranin O staining of the matrix and was scored on a scale of 0–4, where 0 = no cartilage destruction (full staining with Safranin O), 1 = localized cartilage erosions, 2 = more extended cartilage erosions, 3= severe cartilage erosions and 4 = depletion of entire cartilage. Histologic analyses were performed in a blinded manner.
Publication 2009
Bone Resorption Cancellous Bone Cartilage Cells Compact Bone Cortex, Cerebral Eosin Formalin Inflammation Joint Loose Bodies Osteopenia safranine T Tissues
The horizontal alveolar bone resorption (ABR) area and the presence of periodontal intrabony defects were measured by histomorphometry as described previously [37] (link), . Briefly, the maxilla and mandible (n = 10−15) were immersed in 3% (vol/vol) hydrogen peroxide overnight after autoclaving and defleshing the maxillae and mandibles and stained in an aqueous solution of 0.1% methylene blue to delineate the cemento-enamel junction (CEJ) [37] (link), [38] (link), [39] (link). Digital images of both buccal and lingual root surfaces of all molar teeth were captured under a 10×stereo dissecting microscope (SteReo Discovery V8; Carl Zeiss Microimaging, Inc, Thornwood, NY), after superimposition of buccal and lingual cusps to ensure reproducibility and consistency. The line tool was used to measure the horizontal alveolar bone resorption from the CEJ to the alveolar bone crest (ABC). The surface perimeters of CEJ and ABC were traced using the calibrated line tool (AxioVision LE 29A software version 4.6.3.). Two blinded examiners performed all measurements twice at separate times. The means of the measurements were obtained for each of the two quadrants. Periodontal intrabony defects were detected under a 10×stereo dissecting microscope (SteReo Discovery V8) by an experienced periodontist (JL). The maxillae and mandibles were tilted and stabilized with dental wax to verify the presence of the intrabony defects in buccal and lingual surfaces. Only the presence or absence of intrabony defects was detected because the crevasses in the mouse jaw are too small to measure depth and width.
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Publication 2013
Alveolar Bone Loss Bone Resorption Bones Dental Enamel Dental Health Services Mandible Maxilla Microscopy Molar Mus Perimetry Periodontal Ligament Periodontists Peroxide, Hydrogen Ridge, Alveolar Tongue Tooth Root TP63 protein, human
MKP-1 knock out (KO) mice and wild type (WT) mice were provided by Bristol-Myers Squibb Pharmaceutical Research Institute and bred at Medical University of South Carolina. These mice are maintained on a mixed C57/129 background. Eight-week-old male Sprague-Dawley rats were purchased from Charles River Laboratory (Wilmington, MA, USA) with food and tap water ad libitum. All animal-related work was performed in accordance with NIH guidelines. The Institutional Animal Care and Use Committee (IACUC) at the Medical University of South Carolina approved all experimental protocols. For adenoviral gene expression experiment, 8-week-old male Sprague-Dawley rats were injected with 4 μl of either 1×109 plague-forming unit (pfu) dose (21 rats/group) or 5×108 pfu dose (21 rats/group) of Ad.LacZ at palatal gingival tissues. The rats were sacrificed at 3, 21, or 28 days following adenovirus delivery. For bone resorption experiment, 8-week-old male Sprague-Dawley rats were injected with 4 μl of either 1×109 pfu of Ad.MKP-1 (n=17) or control Ad.LacZ (n=17), or HEPES buffered saline (n=17) at interproximal palatal regions between the maxilla first and second molars. Forty-eight hours after delivery of adenovirus, the rats were injected with 2 μl of PBS (n=7) or 2 μl/20 μg of LPS (n=10) three times a week for four weeks. The rats were sacrificed at the end of 4 weeks following LPS injection.
Publication 2010
Adenoviruses Adenovirus Vaccine Animals Bone Resorption DUSP1 protein, human Food Gene Expression Gingiva HEPES Institutional Animal Care and Use Committees LacZ Genes Males Maxilla Mice, House Mice, Knockout Molar Obstetric Delivery Pharmaceutical Preparations Plague Rats, Sprague-Dawley Rattus norvegicus Rivers Saline Solution Tissues
Whole knee joints and hind paws were fixed in 10% formalin, decalcified, trimmed, and embedded. Sections were prepared from the tissue blocks and stained with hematoxylin and eosin (H&E) (Comparative Biosciences). Histopathological scoring was performed as described below. Knees of arthritic mice were given scores of 0–5 for inflammation, according to the following criteria: 0 = normal; 1 = minimal infiltration of inflammatory cells in periarticular area; 2 = mild infiltration; 3 = moderate infiltration; 4 = marked infiltration; and 5 = severe infiltration. Knees of arthritic mice were given scores of 0–5 for bone resorption, according to the following criteria: 0 = normal; 1 = minimal (small areas of resorption, not readily apparent on low magnification); 2 = mild (more numerous areas of resorption, not readily apparent on low magnification, in trabecular or cortical bone); 3 = moderate (obvious resorption of trabecular and cortical bone, without full-thickness defects in the cortex; loss of some trabeculae; lesions apparent on low magnification); 4 = marked (full-thickness defects in the cortical bone and marked trabecular bone loss, without distortion of the profile of the remaining cortical surface); and 5 = severe (full-thickness defects in the cortical bone and marked trabecular bone loss, with distortion of the profile of the remaining cortical surface). Each slide was scored by two independent observers and the average score was used.
Publication 2003
Bone Resorption Cancellous Bone Cells Compact Bone Cortex, Cerebral Eosin Formalin Inflammation Knee Knee Joint Mus Osteopenia Tissues

Most recents protocols related to «Bone Resorption»

Fig. S1 displays mitochondrial abundance and OXPHOS expression in Mmp9/Mmp14 DKO osteoclasts. Fig. S2 shows the identification and quantitative analysis of the metabolome in Mmp9/Mmp14 DKO osteoclasts. Fig. S3 depicts that active RhoA rescues defects in sealing zone formation and bone resorption in DKO osteoclasts. Fig. S4 shows that galectin-3 surface binding antagonist reverses functional defects in DKO osteoclasts. Fig. S5 depicts a galectin-3–Lrp1 axis regulates RhoA activation and sealing zone formation in osteoclasts. Table S1 is the list of the genotyping PCR primers. Table S2 lists the quantitative real-time PCR primers. Table S3 shows the list of galectin-3 interacting partners through mass spectrometry.
Publication 2023
Bone Resorption Epistropheus Galectin 3 Mass Spectrometry Metabolome Mitochondria MMP9 protein, human MMP14 protein, human Oligonucleotide Primers Osteoclasts Real-Time Polymerase Chain Reaction RHOA protein, human
Calvariae from 5-d-old wild-type or DKO mice were isolated aseptically, cleaned, and cultured for 16 h at 37°C in 0.5 ml of BGJb medium (Life Technologies) containing 1 mg/ml BSA (fraction V; Sigma-Aldrich; Moxon et al., 2015 (link)). Half calvariae were transferred to fresh medium with 0.1 μM parathyroid hormone (H-4835.0005; Bachem) in the presence or absence of an anti–galectin-3 monoclonal antibody (sc-32790L; Santa Cruz) or an anti-Lrp1 monoclonal antibody (MA1-27198; Thermo Fisher Scientific), and cultured for an additional 5 d. Culture supernatant was collected for bone resorption marker CTX-I level detection using RatLaps CTX-I EIA kit (AC-06F1; Immunodiagnostic Systems). The half calvariae were either fixed for immunostaining with an anti-TRAP polyclonal antibody (sc-30833; Santa Cruz), an anti–galectin-3 monoclonal antibody (#125401; Biolegend; clone M3/38), or an anti-V-type proton pump-3 (Vpp3) polyclonal antibody (ab200839; Abcam) as describe above or snap-frozen for TRAP activity assay.
Publication 2023
Antibodies, Anti-Idiotypic Biological Assay Bone Resorption Calvaria Clone Cells Freezing Galectin 3 Immunodiagnosis Immunoglobulins Monoclonal Antibodies Mus Parathyroid Hormone Physiotens Protons
Normal human CD14+ monocytes (Lonza) were cultured in α-MEM supplemented with 10% FBS, 2 mM L-glutamine, 100 U/ml penicillin-streptomycin, and 20 ng/ml M-CSF for 6 d to expand the precursor population and differentiate into macrophages. Cells were then detached with Accutase (A1110501; Gibco), seeded on tissue-culture plastic dishes, and cultured with M-CSF (20 ng/ml) and RANKL (20 ng/ml) for 9 d to induce multinuclear osteoclast formation, or reseeded on bone slices for bone resorption assay (Raynaud-Messina et al., 2018 (link); Zhu et al., 2020 (link)). Human osteoclasts were cultured with isotype control IgG, MMP9 function-blocking monoclonal antibody (sc-12759L; Santa Cruz), and a function-blocking antibody anti-MMP14 (DX-2400) at 100 μg/ml (Ager et al., 2015 (link); Marshall et al., 2015 (link); Zhu et al., 2020 (link)), in the presence or absence of an anti–GALECTIN-3 blocking antibody (sc-32790L; Santa Cruz) or an anti-LRP1 blocking antibody (MA1-27198; Thermo Fisher Scientific) at 25 μg/ml (Chen et al., 2015 (link); Moxon et al., 2015 (link); Seguin et al., 2017 (link)). DX-2400 was provided by the Kadmon Corporation.
Publication 2023
accutase Antibodies, Blocking Biological Assay Bone Resorption Bones Cells DX-2400 Galectin 3 Glutamine Homo sapiens Hyperostosis, Diffuse Idiopathic Skeletal Immunoglobulin Isotypes Macrophage Macrophage Colony-Stimulating Factor MMP9 protein, human MMP14 protein, human Monoclonal Antibodies Monocytes Osteoclasts Penicillins Physiotens RAGE receptor protein, human Raynaud Disease Streptomycin Tissues TNFSF11 protein, human
For bone resorption assays, BMDMs or pre-osteoclasts were seeded and cultured on bovine cortical bone slices (DT-1BON1000-96; Immunodiagnostic Systems) with 20 ng/ml M-CSF and 30 ng/ml RANKL (R&D Systems; Wu et al., 2017 (link); Zhang et al., 2018 (link); Zhu et al., 2020 (link)), in the presence or absence of galectin-3 (8259-GA; R&D Systems), galectin-3C (10110-GA; R&D Systems), GCS-100 (La Jolla Pharmaceutical), RAP (4480-LR; R&D Systems), an anti–galectin-3 blocking antibody (sc-32790L; Santa Cruz), or an anti-Lrp1 blocking antibody (MA1-27198; Thermo Fisher Scientific; Chen et al., 2015 (link); Demotte et al., 2010 (link); John et al., 2003 (link); Moxon et al., 2015 (link); Seguin et al., 2017 (link)). After the indicated culture period, bone samples were sonicated in PBS, stained with 20 μg/ml WGA-lectin (L3892; Sigma-Aldrich) for 45 min and then incubated with DAB tablets (D4418; Sigma-Aldrich) for 15 min. Image J software was used to quantify the resorbed area. The concentration of the CTX-I was measured using the CrossLaps for Culture CTX-I ELISA kit (AC-07F1; Immunodiagnostic Systems) according to the manufacturer’s instructions.
Publication 2023
Antibodies, Anti-Idiotypic Antibodies, Blocking Biological Assay Bone Resorption Bones Bos taurus Cardiac Arrest Compact Bone Enzyme-Linked Immunosorbent Assay Galactose Binding Lectin Galectin 3 GCS-100 glutamyl-lysyl-alanyl-histidyl-aspartyl-glycyl-glycyl-arginine Immunodiagnosis Lectin Macrophage Colony-Stimulating Factor Osteoclasts Pharmaceutical Preparations Physiotens TNFSF11 protein, human
WT- or Parkin−/−-derived macrophages (1 × 105 cells) were cultured on dentine slices for 24 h in α-MEM medium containing 30 ng/ml M-CSF and 10 ng/ml RANKL and further incubated for 7 days. The medium was then removed, and 1 M NH4OH was added to the wells for 30 min. Adherent cells were removed from the dentine slices by ultrasonication; the resorption areas were visualized by staining with 1% toluidine blue. The resorbed pit area on the dentine was then photographed using an image analysis system (NIS-Elements Imaging Software) linked to a light microscope (Nikon). For inflammatory IL-1β-induced OC bone resorption, WT or Parkin−/− OCPs primed with RANKL on a bone slice for 24 h were further incubated for 7 days in the presence of 10 ng/ml IL-1β, and the resorbed pit area sizes were evaluated, as described above. Resorption pit areas were quantified by ImageJ software.
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Publication 2023
Bone Resorption Bones Cells Dentin Inflammation Interleukin-1 beta Interleukin-10 Light Microscopy Macrophage Macrophage Colony-Stimulating Factor Ocular Cicatricial Pemphigoid PARK2 protein, human TNFSF11 protein, human Tolonium Chloride

Top products related to «Bone Resorption»

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The Bone Resorption Assay Kit is a laboratory tool used to measure the activity of osteoclasts, the cells responsible for bone resorption. The kit provides a standardized method to quantify the degradation of mineralized matrices, which is a key indicator of bone resorption.
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Osteo Assay Surface plates are a type of cell culture labware designed for the study of bone-forming cells. They provide a specialized surface that supports the growth and differentiation of osteoblasts, the cells responsible for bone formation. These plates are a tool used in various research applications related to bone biology and development.
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The Quanta 250 is a scanning electron microscope (SEM) designed for high-resolution imaging and analysis of a wide range of materials. It features a field emission gun (FEG) source, providing high-brightness electron beams for enhanced resolution and low-voltage imaging capabilities. The Quanta 250 offers versatile imaging modes, including secondary electron (SE), backscattered electron (BSE), and low-voltage imaging, enabling detailed surface and compositional analysis of samples.
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The Osteo Assay Surface is a cell culture surface designed for the study of osteogenic differentiation. It provides a consistent and reproducible environment for the growth and analysis of cells involved in bone formation.
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RANKL is a recombinant protein produced in mammalian cells. It is a member of the tumor necrosis factor (TNF) ligand family and plays a key role in the regulation of bone remodeling and immune function.
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The RatLaps EIA is a laboratory equipment product designed to measure the levels of bone resorption markers in rat samples. It is an enzyme immunoassay used for the quantitative determination of the C-terminal telopeptide of type I collagen (CTX-I) in rat serum or plasma.
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The Leukocyte acid phosphatase kit is a laboratory reagent designed to measure the activity of acid phosphatase enzyme in white blood cells (leukocytes). It provides a quantitative assessment of this enzyme, which is involved in cellular metabolism and can be used as an indicator of certain medical conditions.
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Fetal Bovine Serum (FBS) is a cell culture supplement derived from the blood of bovine fetuses. FBS provides a source of proteins, growth factors, and other components that support the growth and maintenance of various cell types in in vitro cell culture applications.
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Image-Pro Plus is an image analysis software developed by Media Cybernetics. It provides tools for image acquisition, processing, measurement, and analysis.

More about "Bone Resorption"

Bone resorption is the physiological process of osteoclasts breaking down bone tissue, releasing minerals, matrix, and growth factors into the bloodstream.
This vital process is essential for maintaining and remodeling healthy bone structure.
Dysregulation of bone resorption can lead to conditions like osteoporosis, Paget's disease, and rheumatoid arthritis.
Researchers investigating bone resorption utilize various in vitro and in vivo models to study the underlying cellular and molecular mechanisms.
Optimizing these research protocols is crucial for enhancing the reproducibility and accuracy of findings in this important area of skeletal biology.
Bone resorption assay kits, such as Osteo Assay Surface plates, provide valuable tools for researchers to quantify and analyze osteoclast activity.
The Quanta 250 and Osteo Assay Surface platforms enable high-throughput screening and assessment of bone resorption.
RANKL, a key regulator of osteoclast differentiation, and the RatLaps EIA assay, which measures the C-terminal telopeptide of type I collagen, are important markers used in bone resorption studies.
The Leukocyte acid phosphatase kit helps identify and quantify osteoclasts, while fetal bovine serum (FBS) is commonly used in cell culture media to support osteoclast formation and function.
Image-Pro Plus software assists in the analysis and visualization of bone resorption data.
By leveraging these specialized tools and techniques, researchers can enhance the quality and reliability of their bone resorption research, ultimately contributing to a better understanding of skeletal health and disease.