1
|
Hogg R, Bromage T. Long‐Period Biorhythm Variation in Enamel Microstructure of Pre‐Columbian South Americans. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.639.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Russell Hogg
- Rehabilitation SciencesFlorida Gulf Coast UniversityFt MyersFL
| | - Timothy Bromage
- Biomaterials and Biomimetics, Basic SciencesNew York University College of DentistryNew YorkNY
| |
Collapse
|
2
|
Merolli A, Fung S, Murthy NS, Pashuck ET, Mao Y, Wu X, Steele JAM, Martin D, Moghe PV, Bromage T, Kohn J. "Ruffled border" formation on a CaP-free substrate: A first step towards osteoclast-recruiting bone-grafts materials able to re-establish bone turn-over. J Mater Sci Mater Med 2018; 29:38. [PMID: 29564568 PMCID: PMC5862932 DOI: 10.1007/s10856-018-6046-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 03/05/2018] [Indexed: 05/02/2023]
Abstract
Osteoclasts are large multinucleated giant cells that actively resorb bone during the physiological bone turnover (BTO), which is the continuous cycle of bone resorption (by osteoclasts) followed by new bone formation (by osteoblasts). Osteoclasts secrete chemotactic signals to recruit cells for regeneration of vasculature and bone. We hypothesize that a biomaterial that attracts osteoclasts and re-establishes BTO will induce a better healing response than currently used bone graft materials. While the majority of bone regeneration efforts have focused on maximizing bone deposition, the novelty in this approach is the focus on stimulating osteoclastic resorption as the starter for BTO and its concurrent new vascularized bone formation. A biodegradable tyrosine-derived polycarbonate, E1001(1k), was chosen as the polymer base due to its ability to support bone regeneration in vivo. The polymer was functionalized with a RGD peptide or collagen I, or blended with β-tricalcium phosphate. Osteoclast attachment and early stages of active resorption were observed on all substrates. The transparency of E1001(1k) in combination with high resolution confocal imaging enabled visualization of morphological features of osteoclast activation such as the formation of the "actin ring" and the "ruffled border", which previously required destructive forms of imaging such as transmission electron microscopy. The significance of these results is twofold: (1) E1001(1k) is suitable for osteoclast attachment and supports osteoclast maturation, making it a base polymer that can be further modified to optimize stimulation of BTO and (2) the transparency of this polymer makes it a suitable analytical tool for studying osteoclast behavior.
Collapse
Affiliation(s)
- Antonio Merolli
- New Jersey Center for Biomaterials, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA
- Universita Cattolica del Sacro Cuore, Clinica Ortopedica, Rome, Italy
| | - Stephanie Fung
- New Jersey Center for Biomaterials, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - N Sanjeeva Murthy
- New Jersey Center for Biomaterials, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - E Thomas Pashuck
- New Jersey Center for Biomaterials, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - Yong Mao
- New Jersey Center for Biomaterials, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - Xiaohuan Wu
- New Jersey Center for Biomaterials, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - Joseph A M Steele
- New Jersey Center for Biomaterials, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - Daniel Martin
- High Resolution Microscopy, Biomedical Engineering, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - Prabhas V Moghe
- High Resolution Microscopy, Biomedical Engineering, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA
| | - Timothy Bromage
- Hard Tissue Research Unit. Department of Biomaterials and Biomimetics, New York University College of Dentistry, New York, NY, 10010, USA
| | - Joachim Kohn
- New Jersey Center for Biomaterials, Rutgers - The State University of New Jersey, New Brunswick, NJ, 08901, USA.
| |
Collapse
|
3
|
Kaya S, Basta-Pljakic J, Seref-Ferlengez Z, Majeska RJ, Cardoso L, Bromage T, Zhang Q, Flach CR, Mendelsohn R, Yakar S, Fritton SP, Schaffler MB. Lactation-Induced Changes in the Volume of Osteocyte Lacunar-Canalicular Space Alter Mechanical Properties in Cortical Bone Tissue. J Bone Miner Res 2017; 32:688-697. [PMID: 27859586 PMCID: PMC5395324 DOI: 10.1002/jbmr.3044] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 10/27/2016] [Accepted: 11/15/2016] [Indexed: 01/23/2023]
Abstract
Osteocytes can remove and remodel small amounts of their surrounding bone matrix through osteocytic osteolysis, which results in increased volume occupied by lacunar and canalicular space (LCS). It is well established that cortical bone stiffness and strength are strongly and inversely correlated with vascular porosity, but whether changes in LCS volume caused by osteocytic osteolysis are large enough to affect bone mechanical properties is not known. In the current studies we tested the hypotheses that (1) lactation and postlactation recovery in mice alter the elastic modulus of bone tissue, and (2) such local changes in mechanical properties are related predominantly to alterations in lacunar and canalicular volume rather than bone matrix composition. Mechanical testing was performed using microindentation to measure modulus in regions containing solely osteocytes and no vascular porosity. Lactation caused a significant (∼13%) reduction in bone tissue-level elastic modulus (p < 0.001). After 1 week postweaning (recovery), bone modulus levels returned to control levels and did not change further after 4 weeks of recovery. LCS porosity tracked inversely with changes in cortical bone modulus. Lacunar and canalicular void space increased 7% and 15% with lactation, respectively (p < 0.05), then returned to control levels at 1 week after weaning. Neither bone mineralization (assessed by high-resolution backscattered scanning electron microscopy) nor mineral/matrix ratio or crystallinity (assessed by Raman microspectroscopy) changed with lactation. Thus, changes in bone mechanical properties induced by lactation and recovery appear to depend predominantly on changes in osteocyte LCS dimensions. Moreover, this study demonstrates that tissue-level cortical bone mechanical properties are rapidly and reversibly modulated by osteocytes in response to physiological challenge. These data point to a hitherto unappreciated role for osteocytes in modulating and maintaining local bone mechanical properties. © 2016 American Society for Bone and Mineral Research.
Collapse
Affiliation(s)
- Serra Kaya
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - Jelena Basta-Pljakic
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | | | - Robert J Majeska
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - Luis Cardoso
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - Timothy Bromage
- Department of Biomaterials, New York University College of Dentistry, New York, NY, USA
| | - Qihong Zhang
- Department of Chemistry, Rutgers University, Newark, NJ, USA
| | - Carol R Flach
- Department of Chemistry, Rutgers University, Newark, NJ, USA
| | | | - Shoshana Yakar
- Department of Basic Science, New York University College of Dentistry, New York, NY, USA
| | - Susannah P Fritton
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| | - Mitchell B Schaffler
- Department of Biomedical Engineering, City College of New York, New York, NY, USA
| |
Collapse
|
4
|
Froum S, Wallace S, Cho SC, Khouly I, Rosenberg E, Corby P, Froum S, Bromage T, Schoor R, Norman R, Tarnow D. Histomorphometric Comparison of Different Concentrations of Recombinant Human Bone Morphogenetic Protein with Allogeneic Bone Compared to the Use of 100% Mineralized Cancellous Bone Allograft in Maxillary Sinus Grafting. INT J PERIODONT REST 2013; 33:721-30. [DOI: 10.11607/prd.1736] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
5
|
Froum SJ, Wallace S, Cho SC, Rosenberg E, Froum S, Schoor R, Mascarenhas P, Tarnow DP, Corby P, Elian N, Fickl S, Ricci J, Hu B, Bromage T, Khouly I. A Histomorphometric Comparison of Bio-Oss Alone Versus Bio-Oss and Platelet-Derived Growth Factor for Sinus Augmentation: A Postsurgical Assessment. INT J PERIODONT REST 2013; 33:269-79. [DOI: 10.11607/prd.1614] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
6
|
Hogg R, Godfrey L, Schwartz G, Dirks W, Bromage T. Lemur biorhythms and life history evolution. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.520.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Russell Hogg
- Physical Therapy and Human PerformanceFlorida Gulf Coast UniversityFt MyersFL
| | - Laurie Godfrey
- AnthropologyUniversity of Massachusetts‐AmherstAmherstMA
| | - Gary Schwartz
- Institute of Human OriginsArizona State UniversityTempeAZ
- School of Human Evolution and Social ChangeArizona State UniversityTempeAZ
| | - Wendy Dirks
- Oral BiologySchool of Dental SciencesNewcastle UniversityNewcastle Upon TyneUnited Kingdom
| | - Timothy Bromage
- Biomaterials & BiomimeticsNYU College of DentistryNew YorkNY
| |
Collapse
|
7
|
Slott PA, Baker E, Singh IJ, Cunningham E, Hagens G, Bromage T, Fuss C, Diwersi N, Terracio L. The New Anatomy: Dissectionless But Not Cadaverless. FASEB J 2006. [DOI: 10.1096/fasebj.20.5.a885-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | - Louis Terracio
- Office of ResearchNYU College of Dentistry345 E. 24th St., At VA #16NNew YorkNY10010‐4086
| |
Collapse
|
8
|
Arnaud SB, Buckendahl P, Durnova G, Bromage T, Yamauchi M. Bone biochemistry in rat femoral diaphysis after space flight. J Gravit Physiol 2000; 7:7-15. [PMID: 12124180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
The aim of this experiment was to identify the location of the biochemical changes associated with depressed mineralization during space flight. We carried out biochemical analysis of 4 sections of the femoral diaphyses from 107 day old male rats flown aboard Cosmos 2044 Biosatellite for 16 days. Control femurs were preflight, vivarium, synchronous for feed, cage and temperature exposure, and a flight simulation model. Distal sections in both the flight and synchronous femurs showed mineral deficits associated with reduced levels of the reducible cross-link product of type I collagen, dehydro-dihydroxylysinonorleucine (deH-DHLNL) (p<.05). Unloaded bones in the ground based flight simulation model showed changes in cross-links similar to flight and synchronous controls, but were not associated with the mineral deficit. Mean values of elements measured in each section of all groups revealed significant associations (p<.005) between the non-collagenous protein, osteocalcin and calcium (r=0.774), phosphorus (r=-.624) and deH-DHLNL/deH-HLNL (r=.883). The ratio of the nonreducible cross-link, pyridinoline, to its lysl analogue, deoxypyridinoline, was consistently lower in the distal than proximal sections of the groups tested. None of the changes during space flight were unique to flight bone. The most significant and extensive changes in bone composition, i.e. mineral deficits associated with changes in both osteocalcin and reducible cross-links, were located in the distal section of the diaphysis of the femur.
Collapse
Affiliation(s)
- S B Arnaud
- Life Sciences Division, National Aeronautics and Space Administration Ames Research Center, Moffett Field, CA, USA.
| | | | | | | | | |
Collapse
|