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Lu P, Peng J, Liu J, Chen L. The role of photobiomodulation in accelerating bone repair. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2024; 188:55-67. [PMID: 38493961 DOI: 10.1016/j.pbiomolbio.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 03/03/2024] [Accepted: 03/08/2024] [Indexed: 03/19/2024]
Abstract
Bone repair is faced with obstacles such as slow repair rates and limited bone regeneration capacity. Delayed healing even nonunion could occur in bone defects, influencing the life quality of patients severely. Photobiomodulation (PBM) utilizes different light sources to derive beneficial therapeutic effects with the advantage of being non-invasive and painless, providing a promising strategy for accelerating bone repair. In this review, we summarize the parameters, mechanisms, and effects of PBM regulating bone repair, and further conclude the current clinical application of PBM devices in bone repair. The wavelength of 635-980 nm, the output power of 40-100 mW, and the energy density of less than 100 J/cm2 are the most commonly used parameters. New technologies, including needle systems and biocompatible and implantable optical fibers, offer references to realize an efficient and safe strategy for bone repair. Further research is required to establish the reliability of outcomes from in vivo and in vitro studies and to standardize clinical trial protocols.
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Affiliation(s)
- Ping Lu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Jinfeng Peng
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Jie Liu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; School of Stomatology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration, Wuhan 430022, China.
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2
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Lim DW, Lee C. The Effects of Natural Product-Derived Extracts for Longitudinal Bone Growth: An Overview of In Vivo Experiments. Int J Mol Sci 2023; 24:16608. [PMID: 38068932 PMCID: PMC10706747 DOI: 10.3390/ijms242316608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 11/20/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023] Open
Abstract
Approximately 80% of children with short stature are classified as having Idiopathic Short Stature (ISS). While growth hormone (GH) treatment received FDA approval in the United States in 2003, its long-term impact on final height remains debated. Other treatments, like aromatase inhibitors, metformin, and insulin-like growth factor-1 (IGF-1), have been explored, but there is no established standard treatment for ISS. In South Korea and other Asian countries, East Asian Traditional Medicine (EATM) is sometimes employed by parents to potentially enhance their children's height growth, often involving herbal medicines. One such product, Astragalus membranaceus extract mixture HT042, claims to promote height growth in children and has gained approval from the Korean Food and Drug Administration (KFDA). Research suggests that HT042 supplementation can increase height growth in children without skeletal maturation, possibly by elevating serum IGF-1 and IGF-binding protein-3 levels. Preclinical studies also indicate the potential benefits of natural products, including of EATM therapies for ISS. The purpose of this review is to offer an overview of bone growth factors related to ISS and to investigate the potential of natural products, including herbal preparations, as alternative treatments for managing ISS symptoms, based on their known efficacy in in vivo studies.
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Affiliation(s)
| | - Changho Lee
- Division of Functional Food Research, Korea Food Research Institute, Wanju 55365, Republic of Korea;
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3
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Chaudhry AA, Castro-Magana M, Aloia JF, Yeh JK, Guevarra MS. Editorial Expression of Concern: Differential effects of growth hormone and alfa calcidol on trabecular and cortical bones in hypophysectomized rats. Pediatr Res 2022; 92:608. [PMID: 34716419 DOI: 10.1038/s41390-021-01800-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Afshan A Chaudhry
- Department of Pediatric Endocrinology, Winthrop University Hospital, Mineola, NY, 11501, USA.
| | - Mariano Castro-Magana
- Department of Pediatric Endocrinology, Winthrop University Hospital, Mineola, NY, 11501, USA
| | - John F Aloia
- Department of Medicine, Winthrop University Hospital, Mineola, NY, 11501, USA
| | - James K Yeh
- Department of Medicine, Winthrop University Hospital, Mineola, NY, 11501, USA.,Metabolism Laboratory, Winthrop University Hospital, Mineola, NY, 11501, USA
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4
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Expression of Concern. Horm Res Paediatr 2022; 95:99. [PMID: 37334996 DOI: 10.1159/000522416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/07/2023] Open
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5
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Ryan G, Magony R, Gortler H, Godbout C, Schemitsch EH, Nauth A. Systemically impaired fracture healing in small animal research: A review of fracture repair models. J Orthop Res 2021; 39:1359-1367. [PMID: 33580554 DOI: 10.1002/jor.25003] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/09/2020] [Accepted: 02/10/2021] [Indexed: 02/04/2023]
Abstract
Fracture healing is a complex process requiring mechanical stability, an osteoconductive matrix, and osteoinductive and osteogenic biology. This intricate process is easily disrupted by various patient factors such as chronic disease and lifestyle. As the medical complexity and age of patients with fractures continue to increase, the importance of developing relevant experimental models is becoming paramount in preclinical research. The objective of this review is to describe the most common small animal models of systemically impaired fracture healing used in the orthopedic literature including osteoporosis, diabetes mellitus, smoking, alcohol use, obesity, and ageing. This review will provide orthopedic researchers with a summary of current models of systemically impaired fracture healing used in small animals and present an overview of the methods of induction for each condition.
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Affiliation(s)
- Gareth Ryan
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Richard Magony
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Hilary Gortler
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Charles Godbout
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
| | - Emil H Schemitsch
- Department of Surgery, Division of Orthopaedic Surgery, University of Western Ontario, London, Ontario, Canada
| | - Aaron Nauth
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada.,Department of Surgery, Division of Orthopaedic Surgery, St. Michael's Hospital - Unity Health Toronto, University of Toronto, Toronto, Ontario, Canada
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6
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Bolland MJ, Gamble GD, Avenell A, Grey A. Identical summary statistics were uncommon in randomized trials and cohort studies. J Clin Epidemiol 2021; 136:180-188. [PMID: 34000386 DOI: 10.1016/j.jclinepi.2021.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/15/2021] [Accepted: 05/05/2021] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To examine the proposition that identical summary statistics (mean and/or SD) in different randomized controlled trials (RCT) or clinical cohorts can be explained by common or homogeneous source populations. STUDY DESIGN We estimated the probability of identical summary data in studies with high proportions of identical summary statistics, in simulations, and in control datasets. RESULTS The probability of both an identical mean and an identical SD for a variable in separate RCT is low (<~3%), unless the variable is rounded to 1 significant figure. In two RCT with identical summary statistics for 16 of 39 shared variables, simulations indicated the probability of the observed matches was <1 in 100,000. In 34 clinical cohorts with publication integrity concerns, the proportion of summary statistics from variables reported in ≥10 studies that were identical in ≥2 cohorts were high (42% for means, 52% for SD, and 29% for both), and improbable based on simulations and comparisons to control datasets. CONCLUSIONS The likelihood of multiple identical summary statistics within an individual RCT or across a body of RCT or cohort studies by the same research group is low, especially when both the mean, and the SD are identical, unless the variables are rounded to 1 significant figure.
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Affiliation(s)
- Mark J Bolland
- Department of Medicine, University of Auckland, Auckland, New Zealand; Department of Endocrinology, ADHB, Auckland, New Zealand.
| | - Greg D Gamble
- Department of Medicine, University of Auckland, Auckland, New Zealand
| | - Alison Avenell
- Health Services Research Unit, University of Aberdeen, Aberdeen, Scotland
| | - Andrew Grey
- Department of Medicine, University of Auckland, Auckland, New Zealand; Department of Endocrinology, ADHB, Auckland, New Zealand; Health Services Research Unit, University of Aberdeen, Aberdeen, Scotland
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Novais A, Chatzopoulou E, Chaussain C, Gorin C. The Potential of FGF-2 in Craniofacial Bone Tissue Engineering: A Review. Cells 2021; 10:932. [PMID: 33920587 PMCID: PMC8073160 DOI: 10.3390/cells10040932] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/10/2021] [Accepted: 04/15/2021] [Indexed: 12/21/2022] Open
Abstract
Bone is a hard-vascularized tissue, which renews itself continuously to adapt to the mechanical and metabolic demands of the body. The craniofacial area is prone to trauma and pathologies that often result in large bone damage, these leading to both aesthetic and functional complications for patients. The "gold standard" for treating these large defects is autologous bone grafting, which has some drawbacks including the requirement for a second surgical site with quantity of bone limitations, pain and other surgical complications. Indeed, tissue engineering combining a biomaterial with the appropriate cells and molecules of interest would allow a new therapeutic approach to treat large bone defects while avoiding complications associated with a second surgical site. This review first outlines the current knowledge of bone remodeling and the different signaling pathways involved seeking to improve our understanding of the roles of each to be able to stimulate or inhibit them. Secondly, it highlights the interesting characteristics of one growth factor in particular, FGF-2, and its role in bone homeostasis, before then analyzing its potential usefulness in craniofacial bone tissue engineering because of its proliferative, pro-angiogenic and pro-osteogenic effects depending on its spatial-temporal use, dose and mode of administration.
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Affiliation(s)
- Anita Novais
- Pathologies, Imagerie et Biothérapies Orofaciales, Université de Paris, URP2496, 1 rue Maurice Arnoux, 92120 Montrouge, France; (A.N.); (E.C.); (C.C.)
- AP-HP Département d’Odontologie, Services d’odontologie, GH Pitié Salpêtrière, Henri Mondor, Paris Nord, Hôpital Rothschild, Paris, France
| | - Eirini Chatzopoulou
- Pathologies, Imagerie et Biothérapies Orofaciales, Université de Paris, URP2496, 1 rue Maurice Arnoux, 92120 Montrouge, France; (A.N.); (E.C.); (C.C.)
- AP-HP Département d’Odontologie, Services d’odontologie, GH Pitié Salpêtrière, Henri Mondor, Paris Nord, Hôpital Rothschild, Paris, France
- Département de Parodontologie, Université de Paris, UFR Odontologie-Garancière, 75006 Paris, France
| | - Catherine Chaussain
- Pathologies, Imagerie et Biothérapies Orofaciales, Université de Paris, URP2496, 1 rue Maurice Arnoux, 92120 Montrouge, France; (A.N.); (E.C.); (C.C.)
- AP-HP Département d’Odontologie, Services d’odontologie, GH Pitié Salpêtrière, Henri Mondor, Paris Nord, Hôpital Rothschild, Paris, France
| | - Caroline Gorin
- Pathologies, Imagerie et Biothérapies Orofaciales, Université de Paris, URP2496, 1 rue Maurice Arnoux, 92120 Montrouge, France; (A.N.); (E.C.); (C.C.)
- AP-HP Département d’Odontologie, Services d’odontologie, GH Pitié Salpêtrière, Henri Mondor, Paris Nord, Hôpital Rothschild, Paris, France
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8
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Bahamonde M, Misra M. Potential applications for rhIGF-I: Bone disease and IGFI. Growth Horm IGF Res 2020; 52:101317. [PMID: 32252004 PMCID: PMC7231643 DOI: 10.1016/j.ghir.2020.101317] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 03/09/2020] [Accepted: 03/21/2020] [Indexed: 12/18/2022]
Abstract
Growth hormone (GH) and insulin like growth factor-I (IGFI) are key bone trophic hormones, whose rising levels during puberty are critical for pubertal bone accrual. Conditions of GH deficiency and genetic resistance impact cortical and trabecular bone deleteriously with reduced estimates of bone strength. In humans, conditions of undernutrition (as in anorexia nervosa (AN), or subsequent to chronic illnesses) are associated with low IGF-I levels, which correlate with disease severity, and also with lower bone mineral density (BMD), impaired bone structure and lower strength estimates. In adolescents and adults with AN, studies have demonstrated a nutritionally acquired GH resistance with low IGF-I levels despite high concentrations of GH. IGF-I levels go up with increasing body weight, and are associated with rising levels of bone turnover markers. In short-term studies lasting 6-10 days, recombinant human IGF-I (rhIGF-I) administration in physiologic replacement doses normalized IGF-I levels and increased levels of bone formation markers in both adults and adolescents with AN. In a randomized controlled trial in adults with AN in which participants were randomized to one of four arms: (i) rhIGF-I with oral estrogen-progesterone (EP), (ii) rhIGF-I alone, (iii) EP alone, or (iv) neither for 9 months, a significant increase in bone formation markers was noted in the groups that received rhIGF-I, and a significant decrease in bone resorption markers in the groups that received EP. The group that received both rhIGF-I and EP had a significant increase in bone density at the spine and hip compared to the group that received neither. Side effects were minimal, with no documented fingerstick glucose of <50 mg/dl. These data thus suggest a potential role for rhIGF-I administration in optimizing bone accrual in states of undernutrition associated with low IGF-I.
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Affiliation(s)
- Marisol Bahamonde
- Department of Pediatrics, Universidad San Francisco de Quito (USFQ), Cumbayá, Ecuador
| | - Madhusmita Misra
- Division of Pediatric Endocrinology, Massachusetts General Hospital for Children, USA; Neuroendocrine Unit, Massachusetts General Hospital, Boston, MA, USA.
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9
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Abstract
The bone remodelling cycle replaces old and damaged bone and is a highly regulated, lifelong process essential for preserving bone integrity and maintaining mineral homeostasis. During the bone remodelling cycle, osteoclastic resorption is tightly coupled to osteoblastic bone formation. The remodelling cycle occurs within the basic multicellular unit and comprises five co-ordinated steps; activation, resorption, reversal, formation and termination. These steps occur simultaneously but asynchronously at multiple different locations within the skeleton. Study of rare human bone disease and animal models have helped to elucidate the cellular and molecular mechanisms that regulate the bone remodelling cycle. The key signalling pathways controlling osteoclastic bone resorption and osteoblastic bone formation are receptor activator of nuclear factor-κB (RANK)/RANK ligand/osteoprotegerin and canonical Wnt signalling. Cytokines, growth factors and prostaglandins act as paracrine regulators of the cycle, whereas endocrine regulators include parathyroid hormone, vitamin D, calcitonin, growth hormone, glucocorticoids, sex hormones, and thyroid hormone. Disruption of the bone remodelling cycle and any resulting imbalance between bone resorption and formation leads to metabolic bone disease, most commonly osteoporosis. The advances in understanding the cellular and molecular mechanisms underlying bone remodelling have also provided targets for pharmacological interventions which include antiresorptive and anabolic therapies. This review will describe the remodelling process and its regulation, discuss osteoporosis and summarize the commonest pharmacological interventions used in its management.
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Affiliation(s)
- J S Kenkre
- 1 Section of Investigative Medicine, Imperial College London, London, UK
| | - Jhd Bassett
- 2 Molecular Endocrinology Laboratory, Department of Medicine, Imperial College London, London, UK
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10
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Astragalus Extract Mixture HT042 Improves Bone Growth, Mass, and Microarchitecture in Prepubertal Female Rats: A Microcomputed Tomographic Study. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:5219418. [PMID: 28572830 PMCID: PMC5442337 DOI: 10.1155/2017/5219418] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Accepted: 04/13/2017] [Indexed: 11/18/2022]
Abstract
Astragalus extract mixture HT042 is a standardized multiherbal mixture comprising Astragalus membranaceus, Eleutherococcus senticosus, and Phlomis umbrosa, which has proven to promote children's height growth. The aim of this study was to investigate the effects of HT042 on longitudinal bone growth, bone mass, and bone microstructure in growing rats using a high-resolution microcomputed tomography system. Four-week-old female rats were fed an HT042-containing diet for 2 weeks. Tibial length was measured at baseline and weekly in vivo. At the end of the study, volumetric bone mineral density (vBMD) and microarchitectural parameters were estimated in the trabecular and cortical bone of the tibia. Tibial length gain was significantly increased by HT042 compared to that reported with the control diet. In the proximal tibial metaphysis, HT042-treated rats had significantly higher trabecular vBMD, bone volume fraction, and trabecular number and lower trabecular separation, trabecular pattern factor, and structure model index values than control rats did. Total cross-sectional area and bone area of the cortical bone in the tibial diaphysis also increased. These findings suggest that HT042 increases longitudinal bone growth rate, improves trabecular bone mass, and enhances the microarchitecture of trabecular and cortical bone during growth.
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11
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Camassa JA, Diogo CC, Sousa CP, Azevedo JT, Viegas CA, Reis RL, Dourado N, Dias IR. Bone turnover markers in sheep and goat: A review of the scientific literature. AN ACAD BRAS CIENC 2017; 89:231-245. [PMID: 28273244 DOI: 10.1590/0001-3765201720160407] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 10/11/2016] [Indexed: 01/23/2023] Open
Abstract
Bone turnover markers (BTMs) are product of bone cell activity and are generally divided in bone formation and bone resorption markers. The purpose of this review was to structure the available information on the use of BTMs in studies on small ruminants, especially for monitoring their variations related to diet, exercise, gestation and metabolic lactation state, circadian and seasonal variations, and also during skeletal growth. Pre-clinical and translational studies using BTMs with sheep and goats as animal models in orthopaedic research studies to help in the evaluation of the fracture healing process and osteoporosis research are also described in this review. The available information from the reviewed studies was systematically organized in order to highlight the most promising BTMs in small ruminant research, as well as provide a wide view of the use of sheep and goat as animal models in orthopaedic research, type of markers and commercial assay kits with cross-reactivity in sheep and goat, method of sample and storage of serum and urine for bone turnover markers determination and the usefulness and limitations of bone turnover markers in the different studies, therefore an effective tool for researchers that seek answers to different questions while using BTMs in small ruminants.
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Affiliation(s)
- José A Camassa
- 1Department of Veterinary Sciences, Agricultural and Veterinary Sciences School/ ECAV, University of Trás-os-Montes and Alto Douro/ UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Camila C Diogo
- 1Department of Veterinary Sciences, Agricultural and Veterinary Sciences School/ ECAV, University of Trás-os-Montes and Alto Douro/ UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Cristina P Sousa
- Center Hospitalar of Porto, Largo Prof. Abel Salazar, 4099-001 Porto, Portugal
| | - Jorge T Azevedo
- Department of Animal Sciences/ ECAV, UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal.,Centre for Animal Sciences and Veterinary Studies/ CECAV, UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Carlos A Viegas
- 1Department of Veterinary Sciences, Agricultural and Veterinary Sciences School/ ECAV, University of Trás-os-Montes and Alto Douro/ UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal.,Centre for the Research and Technology of Agro-Environmental and Biological Sciences/ CITAB, UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal
| | - Rui L Reis
- 3B's Research Group - Biomaterials, Biodegradables and Biomimetics, Department of Polymer Engineering, University of Minho, Avepark - Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco GMR, Portugal.,Life and Health Sciences Research Institute/ ICVS, School of Health Sciences, University of Minho Campus de Gualtar 4710-057 Braga, Portugal
| | - Nuno Dourado
- Department of Mechanical Engineering, University of Minho, Azurém Campus, 4804-533 Guimarães, Portugal
| | - Isabel R Dias
- 1Department of Veterinary Sciences, Agricultural and Veterinary Sciences School/ ECAV, University of Trás-os-Montes and Alto Douro/ UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal.,Centre for the Research and Technology of Agro-Environmental and Biological Sciences/ CITAB, UTAD, Quinta de Prados, 5000-801 Vila Real, Portugal
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12
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Xu X, Wang L, Chen L, Su T, Zhang Y, Wang T, Ma W, Yang F, Zhai W, Xie Y, Li D, Chen Q, Fu X, Ma Y, Zhang Y. Effects of chronic sleep deprivation on bone mass and bone metabolism in rats. J Orthop Surg Res 2016; 11:87. [PMID: 27485745 PMCID: PMC4970273 DOI: 10.1186/s13018-016-0418-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 07/13/2016] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND This study aimed to assess the effects of chronic sleep deprivation (CSD) on bone mass and bone metabolism in rats. METHODS Twenty-four rats were randomly divided into CSD and control (CON) groups. Rats were subjected to CSD by using the modified multiple platform method (MMPM) to establish an animal model of CSD. Biochemical parameters such as levels of serum N-terminal propeptide of type I procollagen (PINP), N-terminal cross-linking telopeptide of type I collagen (NTX), growth hormone (GH), estradiol (E2), serum 25(OH)D, and calcium (Ca) were evaluated at 0, 1, 2, and 3 months. After 3 months, each fourth lumbar vertebra and the distal femoral metaphysis of the left extremity of rats were harvested for micro-computed tomography scans and histological analysis, respectively, after the rats were sacrificed under an overdose of pentobarbital sodium. RESULTS Compared with rats from the CON group, rats from the CSD group showed significant decreases in bone mineral density (BMD), bone volume over total volume, trabecular bone thickness, and trabecular bone number and significant increases in bone surface area over bone volume and trabecular bone separations (P < 0.05). Bone histomorphology studies showed that rats in the CSD group had decreased osteogenesis, impaired mineralization of newly formed bones, and deteriorative trabecular bone in the secondary spongiosa zone. In addition, they showed significantly decreased levels of serum PINP (1 month later) and NTX (3 months later) (P < 0.05). The serum 25(OH)D level of rats from the CSD group was lower than that of rats from the CON group after 1 month (P < 0.05). CONCLUSIONS CSD markedly affects bone health by decreasing BMD and 25(OH)D, deteriorating the bone microarchitecture, and decreasing bone formation and bone resorption markers.
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Affiliation(s)
- Xiaowen Xu
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Liang Wang
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Liying Chen
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Tianjiao Su
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Yan Zhang
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Tiantian Wang
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Weifeng Ma
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Fan Yang
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Wujie Zhai
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Yuanyuan Xie
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Dan Li
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Qiong Chen
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Xuemei Fu
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China
| | - Yuanzheng Ma
- Center of Orthopedics, The 309th Hospital of PLA, Beijing, 100091, China.
| | - Yan Zhang
- Center for Systems Biomedical Sciences, University of Shanghai for Science and Technology, Shanghai, 200093, China.
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13
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Birkhold AI, Razi H, Weinkamer R, Duda GN, Checa S, Willie BM. Monitoring in vivo (re)modeling: a computational approach using 4D microCT data to quantify bone surface movements. Bone 2015; 75:210-21. [PMID: 25746796 DOI: 10.1016/j.bone.2015.02.027] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 02/06/2015] [Accepted: 02/25/2015] [Indexed: 10/23/2022]
Abstract
Bone undergoes continual damage repair and structural adaptation to changing external loads with the aim of maintaining skeletal integrity throughout life. The ability to monitor bone (re)modeling would allow for a better understanding in how various pathologies and interventions affect bone turnover and subsequent bone strength. To date, however, current methods to monitor bone (re)modeling over time and in space are limited. We propose a novel method to visualize and quantify bone turnover, based on in vivo microCT imaging and a 4D computational approach. By in vivo tracking of spatially correlated formation and resorption sites over time it classifies bone restructuring into (re)modeling sequences, the spatially and temporally linked sequences of formation, resorption and quiescent periods on the bone surface. The microCT based method was validated using experimental data from an in vivo mouse tibial loading model and ex vivo data of the mouse tibia. In this application, the method allows the visualization of time-resolved cortical (re)modeling and the quantification of short-term and long-term modeling on the endocortical and periosteal surface at the mid-diaphysis of loaded and control mice tibiae. Both short-term and long-term modeling processes, independent formation and resorption events, could be monitored and modeling (spatially not correlated formation and resorption) and remodeling (resorption followed by new formation at the same site) could be distinguished on the bone surface. This novel method that combines in vivo microCT with a computational approach is a powerful tool to monitor bone turnover in animal models now and is waiting to be applied to human patients in the near future.
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Affiliation(s)
- Annette I Birkhold
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; Berlin-Brandenburg School for Regenerative Therapies, Berlin, Germany.
| | - Hajar Razi
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; Berlin-Brandenburg School for Regenerative Therapies, Berlin, Germany.
| | - Richard Weinkamer
- Max Planck Institute of Colloids and Interfaces, Department of Biomaterials, Science Park Potsdam-Golm, 14424 Potsdam, Germany.
| | - Georg N Duda
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany; Berlin-Brandenburg School for Regenerative Therapies, Berlin, Germany.
| | - Sara Checa
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany.
| | - Bettina M Willie
- Julius Wolff Institute, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany.
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Litsas G. Growth Hormone and Craniofacial Tissues. An update. Open Dent J 2015; 9:1-8. [PMID: 25674165 PMCID: PMC4319194 DOI: 10.2174/1874210601509010001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2014] [Revised: 12/08/2014] [Accepted: 12/11/2014] [Indexed: 12/28/2022] Open
Abstract
Growth hormone is an important regulator of bone homeostasis. In childhood, it determines the longitudinal bone growth, skeletal maturation, and acquisition of bone mass. In adulthood, it is necessary to maintain bone mass throughout life. Although an association between craniofacial and somatic development has been clearly established, craniofacial growth involves complex interactions of genes, hormones and environment. Moreover, as an anabolic hormone seems to have an important role in the regulation of bone remodeling, muscle enhancement and tooth development. In this paper the influence of growth hormone on oral tissues is reviewed.
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