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Agrawal P, Pandit A, Malagi SK, Abraham DV, Vasant B, Tembhurne S. Estimation of Levels of Salivary Pyridinoline Cross-Linked Carboxyterminal Telopeptide of Type I Collagen (ICTP) in Periodontally Healthy and Diseased Patients at Various Time Intervals Before and After Periodontal Therapy. Cureus 2024; 16:e66236. [PMID: 39238741 PMCID: PMC11375115 DOI: 10.7759/cureus.66236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Accepted: 08/02/2024] [Indexed: 09/07/2024] Open
Abstract
INTRODUCTION The bacterial plaque in the tooth-supporting tissues is the main cause of inflammatory conditions called periodontal diseases. Thus, the aim of this study is to determine the levels of intercellular matrix protein (ICTP) in patients with gingivitis and periodontitis and those who are periodontally healthy, both before and after treatment at different times. MATERIALS AND METHODS Thirty clinical parameters (bleeding on probing, probing pocket depth, and clinical attachment loss) were measured at baseline, one month, three months, and six months after the patients were divided into three groups of 60. RESULTS There was a significant difference between the two groups at all time intervals; the difference at one month was 34.77 (p=0.000). At three months, the difference became 31.25 (p=0.000) which increased to 36.62 (p=0.000) at six months. CONCLUSION When periodontal deterioration occurs, ICTP levels are higher, and when they are reduced, periodontal health is demonstrated.
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Affiliation(s)
- Priyal Agrawal
- Periodontology, Maitri College of Dentistry and Research Centre, Durg, IND
| | - Aashish Pandit
- Periodontology, Indraprastha Dental College, Ghaziabad, IND
| | - Sachin K Malagi
- Periodontology, Maitri College of Dentistry and Research Centre, Durg, IND
| | - Dennis V Abraham
- Periodontics, Maitri College of Dentistry and Research Centre, Durg, IND
| | | | - Saurabh Tembhurne
- Periodontology, Maitri College of Dentistry and Research Centre, Durg, IND
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Huang Z, Cheng Z, Li X, Tao J, Li Y, Zhu X, Guo H, Zhou X, Du Q. The effect of intestinal flora intervention on bone development in children: A systematic review and meta-analysis. Complement Ther Clin Pract 2022; 48:101591. [DOI: 10.1016/j.ctcp.2022.101591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 04/03/2022] [Accepted: 04/10/2022] [Indexed: 11/26/2022]
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Foessl I, Bassett JHD, Bjørnerem Å, Busse B, Calado Â, Chavassieux P, Christou M, Douni E, Fiedler IAK, Fonseca JE, Hassler E, Högler W, Kague E, Karasik D, Khashayar P, Langdahl BL, Leitch VD, Lopes P, Markozannes G, McGuigan FEA, Medina-Gomez C, Ntzani E, Oei L, Ohlsson C, Szulc P, Tobias JH, Trajanoska K, Tuzun Ş, Valjevac A, van Rietbergen B, Williams GR, Zekic T, Rivadeneira F, Obermayer-Pietsch B. Bone Phenotyping Approaches in Human, Mice and Zebrafish - Expert Overview of the EU Cost Action GEMSTONE ("GEnomics of MusculoSkeletal traits TranslatiOnal NEtwork"). Front Endocrinol (Lausanne) 2021; 12:720728. [PMID: 34925226 PMCID: PMC8672201 DOI: 10.3389/fendo.2021.720728] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 10/21/2021] [Indexed: 12/16/2022] Open
Abstract
A synoptic overview of scientific methods applied in bone and associated research fields across species has yet to be published. Experts from the EU Cost Action GEMSTONE ("GEnomics of MusculoSkeletal Traits translational Network") Working Group 2 present an overview of the routine techniques as well as clinical and research approaches employed to characterize bone phenotypes in humans and selected animal models (mice and zebrafish) of health and disease. The goal is consolidation of knowledge and a map for future research. This expert paper provides a comprehensive overview of state-of-the-art technologies to investigate bone properties in humans and animals - including their strengths and weaknesses. New research methodologies are outlined and future strategies are discussed to combine phenotypic with rapidly developing -omics data in order to advance musculoskeletal research and move towards "personalised medicine".
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Affiliation(s)
- Ines Foessl
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Endocrine Lab Platform, Medical University of Graz, Graz, Austria
| | - J. H. Duncan Bassett
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Åshild Bjørnerem
- Department of Clinical Medicine, UiT The Arctic University of Norway, Tromsø, Norway
- Norwegian Research Centre for Women’s Health, Oslo University Hospital, Oslo, Norway
| | - Björn Busse
- Department of Osteology and Biomechanics, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
| | - Ângelo Calado
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
| | | | - Maria Christou
- Department of Hygiene and Epidemiology, Medical School, University of Ioannina, Ioannina, Greece
| | - Eleni Douni
- Institute for Bioinnovation, Biomedical Sciences Research Center “Alexander Fleming”, Vari, Greece
- Department of Biotechnology, Agricultural University of Athens, Athens, Greece
| | - Imke A. K. Fiedler
- Department of Osteology and Biomechanics, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
| | - João Eurico Fonseca
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Centro Académico de Medicina de Lisboa, Lisboa, Portugal
- Rheumatology Department, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte (CHULN), Lisbon Academic Medical Centre, Lisbon, Portugal
| | - Eva Hassler
- Division of Neuroradiology, Vascular and Interventional Radiology, Department of Radiology, Medical University Graz, Graz, Austria
| | - Wolfgang Högler
- Department of Paediatrics and Adolescent Medicine, Johannes Kepler University Linz, Linz, Austria
| | - Erika Kague
- The School of Physiology, Pharmacology and Neuroscience, Biomedical Sciences, University of Bristol, Bristol, United Kingdom
| | - David Karasik
- Azrieli Faculty of Medicine, Bar-Ilan University, Ramat Gan, Israel
| | - Patricia Khashayar
- Center for Microsystems Technology, Imec and Ghent University, Ghent, Belgium
| | - Bente L. Langdahl
- Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Victoria D. Leitch
- Innovative Manufacturing Cooperative Research Centre, Royal Melbourne Institute of Technology, School of Engineering, Carlton, VIC, Australia
| | - Philippe Lopes
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Georgios Markozannes
- Department of Hygiene and Epidemiology, Medical School, University of Ioannina, Ioannina, Greece
| | | | | | - Evangelia Ntzani
- Department of Hygiene and Epidemiology, Medical School, University of Ioannina, Ioannina, Greece
- Department of Health Services, Policy and Practice, Center for Research Synthesis in Health, School of Public Health, Brown University, Providence, RI, United States
| | - Ling Oei
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Department of Drug Treatment, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Pawel Szulc
- INSERM UMR 1033, University of Lyon, Lyon, France
| | - Jonathan H. Tobias
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
- MRC Integrative Epidemiology Unit, Bristol Medical School, Bristol, University of Bristol, Bristol, United Kingdom
| | - Katerina Trajanoska
- Department of Internal Medicine, Erasmus MC Rotterdam, Rotterdam, Netherlands
| | - Şansın Tuzun
- Physical Medicine & Rehabilitation Department, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpaşa, Istanbul, Turkey
| | - Amina Valjevac
- Department of Human Physiology, School of Medicine, University of Sarajevo, Sarajevo, Bosnia and Herzegovina
| | - Bert van Rietbergen
- Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, Netherlands
| | - Graham R. Williams
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Tatjana Zekic
- Department of Rheumatology and Clinical Immunology, Faculty of Medicine, Clinical Hospital Center Rijeka, Rijeka, Croatia
| | | | - Barbara Obermayer-Pietsch
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Endocrine Lab Platform, Medical University of Graz, Graz, Austria
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Pozo C, Pradere B, Rebhan K, Chao C, Yang L, Abufaraj M, Shariat SF. Impact of Intestinal Urinary Diversion on the Risk of Fracture and Loss of Bone Mass: A Systematic Review. Bladder Cancer 2021; 7:365-376. [PMID: 38993611 PMCID: PMC11181699 DOI: 10.3233/blc-201526] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 06/05/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND Patients undergoing intestinal urinary diversion (IUD) may have a higher risk of osteoporosis and risk of fractures due to metabolic acidosis and decrease of intestinal absorption surface. OBJECTIVE We performed a systematic review of the available literature on the impact of IUD on bone demineralization. METHODS We systematically searched PubMed®, for original articles published before April 2020. Primary end points were the risk of fracture and loss of bone density. Secondary outcomes were the metabolic changes in biochemical and urine parameters related to calcium metabolism and histological changes. RESULTS Our electronic search identified a total of 2417 articles. After a detailed review, we selected 11 studies that addressed the impact of IUD on bone health in 10369 patients. The risk of bone fracture was studied in 3 articles, showing a higher risk in the IUD population. Of the 9 articles evaluating the relation between intestinal urinary diversion and bone density, 5 did find a positive association. One article evaluated the bone metabolism at a cellular level after IUD showing a decrease in bone turnover in this population. Three of the eight studies reporting data on serum parameters related to calcium and phosphate metabolism showed differences. Finally, a correlation between concentration of pyridolines in urine and loss of bone density was found in two of the three studies. CONCLUSIONS Although published data on BMD are contradictory, patients undergoing IUD seem to be at higher risk of bone fractures. Our finding support the need to implement accessible strategies on osteoporosis screening and prevention in IUD patients.
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Affiliation(s)
- Carmen Pozo
- Department of Urology, Medical University of Vienna, Vienna, Austria
| | - Benjamin Pradere
- Department of Urology, Medical University of Vienna, Vienna, Austria
- Department of Urology, CHRU Tours, Francois Rabelais University, Tours, France
| | - Katharina Rebhan
- Department of Urology, Medical University of Vienna, Vienna, Austria
| | - Cao Chao
- Program in Physical Therapy, Washington University School of Medicine, St Louis, MO, USA
- Center for Human Nutrition, Washington University School of Medicine, St Louis, MO, USA
| | - Lin Yang
- Department of Cancer Epidemiology and Prevention Research, Alberta Health Services, Calgary, AB, Canada
- Department of Oncology, University of Calgary, Calgary, AB, Canada
| | | | - Shahrokh F. Shariat
- Department of Urology, Medical University of Vienna, Vienna, Austria
- Department of Urology, University of Jordan, Amman, Jordan
- Department of Urology, Weill Cornell Medical College, New York, NY, USA
- Department of Urology, University of Texas Southwestern, Dallas, TX, USA
- Karl Landsteiner Institute of Urology and Andrology, Vienna, Austria
- European Association of Urology Research Foundation, Arnhem, Netherlands
- Department of Urology, Second Faculty of Medicine, Charles University, Prague, Czech Republic
- Department of Urology, Sechenov University, Moscow, Russia
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Szulc P. Biochemical bone turnover markers in hormonal disorders in adults: a narrative review. J Endocrinol Invest 2020; 43:1409-1427. [PMID: 32335857 DOI: 10.1007/s40618-020-01269-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 04/18/2020] [Indexed: 01/03/2023]
Abstract
BACKGROUND Hormonal disorders are often associated with abnormal levels of bone turnover markers (BTMs). N-terminal propeptide of type I procollagen (PINP) and serum C-terminal cross-linking telopeptide of type I collagen (CTX-I) are the reference markers of bone formation and bone resorption, respectively. METHODS A comprehensive literature search within the MEDLINE and Web of Science databases was performed. RESULTS Acromegaly is associated with higher BTM levels, which decrease during the remission after treatment. Adult-onset growth hormone deficiency is often associated with decreased BTM levels. Growth hormone replacement therapy stimulates bone turnover and increases BTM levels. Hypothyroidism is characterized by general slowing of bone metabolism which is reflected by lower BTM levels. The replacement thyroid hormone therapy increases the bone turnover rate and BTM levels increase. Patients with thyroid cancer receive a suppressive dose of thyroid hormones and may have slightly elevated BTM levels. Patients with overt hyperthyroidism had higher BTM levels and anti-thyroid therapy induces a rapid decrease in the BTM levels. Patients with overt primary hyperparathyroidism have higher BTM levels, whereas those with asymptomatic and normocalcemic hyperparathyroidism usually have normal BTM levels. Hypoparathyroidism is characterized by slightly decreased BTM levels. Cushing's syndrome is characterized consistently by markedly decreased osteocalcin concentration, whereas data on other BTMs are discordant. CONCLUSIONS BTMs help us to better understand mechanisms of the impact of hormonal disorders and their treatment on bone metabolism. However, it is unknown whether BTMs may be used to monitor the effect of their treatments on bone in the clinical practice.
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Affiliation(s)
- P Szulc
- INSERM UMR 1033, University of Lyon, Hôpital Edouard Herriot, Pavillon F, Place d'Arsonval, 69437, Lyon, France.
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Naffa R, Watanabe S, Zhang W, Maidment C, Singh P, Chamber P, Matyska MT, Pesek JJ. Rapid analysis of pyridinoline and deoxypyridinoline in biological samples by liquid chromatography with mass spectrometry and a silica hydride column. J Sep Sci 2019; 42:1482-1488. [PMID: 30680922 DOI: 10.1002/jssc.201801292] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 01/22/2019] [Accepted: 01/22/2019] [Indexed: 11/07/2022]
Abstract
Pyridinoline and deoxypyridinoline crosslinks are biomarkers found in urine for collagen degradation in bone turnover. For the first time, a rapid, sensitive, and ion-pairing free method is described for the analysis of pyridinoline and deoxypyridinoline using ultra-high performance liquid chromatography with Cogent Diamond Hydride column and detection by Q Exactive hybrid quadrupole-orbitrap high resolution accurate mass spectrometry. The separation was achieved using both isocratic and gradient conditions and run time <5 min under isocratic conditions of 20% acetonitrile in water containing 0.1% formic acid. Pyridoxine was used as an internal standard and relative standard deviation of the retention times of both pyridinoline and deoxypyridinoline were <1%. The limit of detection was 0.082 ± 0.023 μM for pyridinoline and 0.118 ± 0.052 μM for deoxypyridinoline. The limit of quantitation was 0.245 ± 0.070 μM for pyridinoline and 0.354 ± 0.157 μM for deoxypyridinoline. The method was validated by the detection and quantitation of both pyridinoline and deoxypyridinoline in skin and urine samples.
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Affiliation(s)
- Rafea Naffa
- NZ Leather and Shoe Research Association (LASRA®), Palmerston North, New Zealand
| | | | - Wenkai Zhang
- NZ Leather and Shoe Research Association (LASRA®), Palmerston North, New Zealand
| | - Catherine Maidment
- NZ Leather and Shoe Research Association (LASRA®), Palmerston North, New Zealand
| | - Preet Singh
- School of Veterinary Science, College of Science, Massey University, Palmerston North, New Zealand
| | - Paul Chamber
- School of Veterinary Science, College of Science, Massey University, Palmerston North, New Zealand
| | - Maria T Matyska
- Department of Chemistry, San Jose State University, San Jose, USA
| | - Joseph J Pesek
- Department of Chemistry, San Jose State University, San Jose, USA
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Saey V, Tang J, Ducatelle R, Croubels S, De Baere S, Schauvliege S, van Loon G, Chiers K. Elevated urinary excretion of free pyridinoline in Friesian horses suggests a breed-specific increase in collagen degradation. BMC Vet Res 2018; 14:139. [PMID: 29699546 PMCID: PMC5921786 DOI: 10.1186/s12917-018-1454-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 04/12/2018] [Indexed: 11/10/2022] Open
Abstract
Background Friesian horses are known for their high inbreeding rate resulting in several genetic diseases such as hydrocephaly and dwarfism. This last decade, several studies focused on two other presumed hereditary traits in Friesian horses: megaoesophagus and aortic rupture. The pathogenesis of these diseases remains obscure but an important role of collagen has been hypothesized. The purpose of this study was to examine possible breed-related differences in collagen catabolism. Urinary specimens from Friesian (n = 17, median age 10 years old) and Warmblood horses (n = 17, median age 10 years old) were assessed for mature collagen cross-links, i.e. pyridinoline (PYD) (=hydroxylysylpyridinoline/HP) and deoxypyridinoline (DPD) (lysylpyridinoline /LP). Solid-phase extraction was performed, followed by reversed-phase ion-paired liquid chromatography prior to tandem mass spectrometry (MS/MS) detection. Results Mean urinary concentrations of free PYD, expressed as fPYD/creatinine ratio, were significantly higher in Friesian horses compared to Warmblood horses (28.5 ± 5.2 versus 22.2 ± 9.6 nmol/mmol, p = 0.02) while mean fDPD/creatinine ratios were similar in both horse breeds (3.0 ± 0.7 versus 4.6 ± 3.7 nmol/mmol, p = 0.09). Conclusions Since DPD is considered a specific bone degradation marker and PYD is more widely distributed in connective tissues, the significant elevation in the mean PYD/DPD ratio in Friesian versus Warmblood horses (9.6 ± 1.6 versus 5.7 ± 1.8, p < 0.0001) suggests a soft tissue origin for the increased fPYD levels. Considering that a previous study found no differences in total collagen content between Friesian and Warmblood horses for tendon and aortic tissue, this indicates a higher rate of collagen degradation. The latter might, at least in part, explain the predisposition of Friesians to connective tissue disorders.
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Affiliation(s)
- Veronique Saey
- Laboratory of Veterinary Pathology, Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
| | - Jonathan Tang
- Bioanalytical Facility, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, NR4 7UQ, UK
| | - Richard Ducatelle
- Laboratory of Veterinary Pathology, Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Siska Croubels
- Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Siegrid De Baere
- Department of Pharmacology, Toxicology and Biochemistry, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Stijn Schauvliege
- Deparment of Surgery and anaesthesiology of domestic animals, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Gunther van Loon
- Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
| | - Koen Chiers
- Laboratory of Veterinary Pathology, Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium
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Ripamonti C, Fulfaro F, Ticozzi C, Casuccio A, De Conno F. Role of Pamidronate Disodium in the Treatment of Metastatic Bone Disease. TUMORI JOURNAL 2018; 84:442-55. [PMID: 9824995 DOI: 10.1177/030089169808400403] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Aims and Background Bone metastases are a common feature of advanced neoplastic disease and are considered to be among the most frequent causes of pain and complications in oncologic patients. The main objective of the treatment of such patients is to control their symptoms and improve their quality of life. Pamidronate disodium is a second-generation bisphosphonate capable of inhibiting bone resorption (particularly osteoclast activity) without affecting bone reminerali-zation. After a brief introduction concerning the pathophysiology of bone metastases and neoplastic bone pain, we herein present data on the clinical pharmacology and toxicity of bisphosphonates in general, and pamidronate in particular. We conclude by reviewing the literature on the use of pamidronate in phase II and III trials involving patients with metastatic bone disease. Methods The paper is based on a review of articles published between 1984 and 1997 selected from the Cancerline and Medline databases. Results In the considered phase II and III studies involving patients with bone metastases (breast cancer and multiple myeloma in particular), pamidronate proved to be efficacious in reducing the incidence of pain and skeletal complications, decreasing the excretion of metabolic markers of bone resorption and improving the quality of life. Intravenous infusions of 60-90 mg over a period of 2 hr every 3-4 weeks did not cause any significant toxic effects and was easily managed. Conclusions Pamidronate is a bisphosphonate that is efficacious in the treatment of symptomatic bone metastases and can be considered an important therapeutic option in association with systemic treatments, radiotherapy and normal supportive care, especially in patients with breast cancer and multiple myeloma. Further randomized studies are necessary to confirm the positive preliminary results in other neoplasms, analyze the cost/benefit ratio of the treatment, and verify the possibility that, in addition to being used for palliative purposes, pamidronate may also prevent or delay the appearance of bone metastases.
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Affiliation(s)
- C Ripamonti
- Pain Therapy and Palliative Care Division, National Cancer Institute, Milan, Italy.
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Regmi P, Nelson N, Haut R, Orth M, Karcher D. Influence of age and housing systems on properties of tibia and humerus of Lohmann White hens
: Bone properties of laying hens in commercial housing systems. Poult Sci 2017; 96:3755-3762. [DOI: 10.3382/ps/pex194] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 06/27/2017] [Indexed: 11/20/2022] Open
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Abstract
Biochemical markers of bone turnover (BTM) are released during bone remodeling and can be measured in blood or urine as noninvasive surrogate markers for the bone remodeling rate. The C-terminal cross-linked telopeptide of type I collagen (βCTX) is released during bone resorption and is specific to bone tissue. Assays have been developed to measure βCTX in blood and in urine; most current use of βCTX measurement for research and in clinical practice is performed on a blood sample. Method-specific differences for serum and plasma βCTX have led to initiatives to standardize or harmonize βCTX commercial assays. βCTX demonstrates significant biological variation due to circadian rhythm and effect of food which can be minimized by standardized sample collection in the fasting state in the morning. While βCTX predicts fracture risk independent of bone mineral density, lack of data has precluded its inclusion in fracture risk calculators. The changes seen in βCTX with antiresorptive therapies have been well characterized and this has led to its widespread use for monitoring therapy in osteoporosis. However, more fracture-based data on appropriate treatment goals for monitoring need to be developed. Evidence is lacking for the use of βCTX in managing "drug holidays" of bisphosphonate treatment in osteoporosis or risk stratifying those at increased risk of developing osteonecrosis of the jaw. βCTX is useful as an adjunct to imaging techniques for the diagnosis of Paget's disease of bone and for monitoring therapy and detecting recurrence. βCTX also shows promise in the management of metastatic bone disease.
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Tang JC, Dutton JJ, Piec I, Green D, Fisher E, Washbourne CJ, Fraser WD. LC-MS/MS application for urine free pyridinoline and free deoxypyridinoline: Urine markers of collagen and bone degradation. CLINICAL MASS SPECTROMETRY (DEL MAR, CALIF.) 2016; 1:11-18. [PMID: 39193423 PMCID: PMC11322722 DOI: 10.1016/j.clinms.2016.08.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Accepted: 08/09/2016] [Indexed: 11/20/2022]
Abstract
Background Pyridinium cross-links pyridinoline (PYD) and deoxypyridinoline (DPD) are established markers of collagen degradation. Measurement of PYD and DPD can be used to evaluate changes in bone turnover in patients with metabolic bone disease and to monitor response to anti-resorptive treatment. Objective To develop a method to extract and measure urine free PYD (fPYD) and free DPD (fDPD) by liquid chromatography tandem mass spectrometry (LC-MS/MS). The method was used to quantify urine samples from 172 healthy individuals and 63 patients diagnosed with metabolic bone disease. Method Acidified urine samples were extracted using solid phase extraction with cellulose slurry. PYD and DPD were separated by reversed-phase, ion-paired chromatography prior to MS/MS detection. Results The fully validated method showed good agreement with other laboratories in the UK National External Proficiency Scheme (UK NEQAS). The method was compared against two commercial immunoassays for fDPD and pyridinium cross-links, r 2 were 0.906 and 0.816 respectively. Urine concentrations of fDPD/Cr and fPYD/Cr were significantly higher in the patients than healthy individuals (p < 0.001). An average (±SD) fDPD:fPYD ratio of 0.29 (±0.08) was consistently observed across all subgroups. A markedly increased fDPD:fPYD ratio of 8.9 was observed in a patient with type VI Ehlers-Danlos Syndrome (EDS). Conclusion Simultaneous measurement of two free pyridinium cross-links provides a valuable, cost effective assessment tool for use in the diagnostic work-up of patients with metabolic bone disease. Improvements in sample extraction efficiency have increased assay specificity and analysis throughput. The use of the fDPD:fPYD ratio can assist in the diagnosis of type VI EDS.
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Affiliation(s)
- Jonathan C.Y. Tang
- Bioanalytical Facility, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7UQ, UK
| | - John J. Dutton
- Bioanalytical Facility, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7UQ, UK
| | - Isabelle Piec
- Bioanalytical Facility, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7UQ, UK
| | - Darrell Green
- Bioanalytical Facility, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7UQ, UK
| | - Emily Fisher
- Bioanalytical Facility, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7UQ, UK
| | - Christopher J. Washbourne
- Bioanalytical Facility, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7UQ, UK
| | - William D. Fraser
- Bioanalytical Facility, Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich NR4 7UQ, UK
- Department of Diabetes and Endocrinology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, UK
- Department of Laboratory Medicine, Norfolk and Norwich University Hospitals NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, UK
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Bone quality assessment techniques: geometric, compositional, and mechanical characterization from macroscale to nanoscale. Clin Rev Bone Miner Metab 2016; 14:133-149. [PMID: 28936129 DOI: 10.1007/s12018-016-9222-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
This review presents an overview of the characterization techniques available to experimentally evaluate bone quality, defined as the geometric and material factors that contribute to fracture resistance independently of areal bone mineral density (aBMD) assessed by dual energy x-ray absorptiometry. The methods available for characterization of the geometric, compositional, and mechanical properties of bone across multiple length scales are summarized, along with their outcomes and their advantages and disadvantages. Examples of how each technique is used are discussed, as well as practical concerns such as sample preparation and whether or not each testing method is destructive. Techniques that can be used in vivo and those that have been recently improved or developed are emphasized, including high resolution peripheral quantitative computed tomography to evaluate geometric properties and reference point indentation to evaluate material properties. Because no single method can completely characterize bone quality, we provide a framework for how multiple characterization methods can be used together to generate a more comprehensive analysis of bone quality to complement aBMD in fracture risk assessment.
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Mishra D, Gopalakrishnan S, Arun KV, Kumar TSS, Devanathan S, Misra SR. Evaluation of Salivary Levels of Pyridinoline Cross Linked Carboxyterminal Telopeptide of Type I Collagen (ICTP) in Periodontal Health and Disease. J Clin Diagn Res 2015; 9:ZC50-5. [PMID: 26501013 DOI: 10.7860/jcdr/2015/12689.6498] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Accepted: 05/05/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND Traditional parameters (Pocket depth, bleeding on probing, clinical attachment loss, radiographic findings) have been used for a long time for the assessment of periodontal disease conditions. However, these parameters only indicate towards the periodontal damage that has already taken place but do not give any idea regarding the current status of the periodontal health or disease. Hence, the present study is aimed at evaluating the concentration of the bone biomarker ICTP in saliva, which can give a better real time assessment of periodontal health and disease. MATERIALS AND METHODS Forty three patients were selected and divided into three groups based on the recorded clinical parameters of probing pocket depth, attachment loss and bleeding on probing. Group I (Healthy, n = 11), Group II (Gingivitis, n = 17), Group III (Periodontitis. n = 15). Salivary samples were collected before scaling and root planning to avoid contamination by blood. ICTP levels were evaluated in the salivary samples by using enzyme linked immunosorbent assay (ELISA). STATISTICAL ANALYSIS USED Kruskal Wallis test was used to compare the mean ICTP level of the three groups. RESULTS ICTP was detected in all the samples. Highest mean ICTP concentrations in saliva were obtained for group III (periodontitis group) and the lowest mean ICTP concentrations were seen in group I (healthy group). This suggests that the level of ICTP in saliva increases proportionally from periodontal health to diseased conditions (gingivitis & periodontitis). CONCLUSION There is a substantial increase in the salivary concentration of ICTP in chronic periodontitis patients than in gingivitis and healthy patients. Salivary ICTP levels were the maximum in chronic periodontitis patients followed by gingivitis patients and the least in healthy individuals. ICTP may be considered as a biomarker in periodontal disease progression.
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Affiliation(s)
- Debasish Mishra
- Senior Resident, Department of Periodontics, SCB Dental College & Hospital , Cuttack, Odisha, India
| | - Sivaram Gopalakrishnan
- Professor, Department of Periodontics, Ragas Dental College & Hospital , Chennai, Tamil Nadu, India
| | - K V Arun
- Professor, Department of Periodontics, Ragas Dental College & Hospital , Chennai, Tamil Nadu, India
| | | | - Santosh Devanathan
- Lecturer, Department of Periodontics, Ragas Dental College & Hospital , Chennai, Tamil Nadu, India
| | - Satya Ranjan Misra
- Reader, Department of Oral Medicine & Radiology, Institute of Dental Sciences , Bhubaneswar, Odisha, India
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Kobayashi T, Koie H, Watanabe A, Ino A, Watabe K, Kim M, Kanayama K, Otsuji K. Effects of food enriched with egg yolk hydrolysate (bone peptide) on bone metabolism in orchidectomized dogs. J Vet Med Sci 2015; 77:503-6. [PMID: 25649521 PMCID: PMC4427756 DOI: 10.1292/jvms.13-0421] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
We examined the effects of chicken egg hydrolysate (also known as “bone peptide” or BP)
on bone metabolism in 5- to 8-month-old orchidectomized dogs. The bone formation marker
serum bone alkaline phosphatase (BAP) and the bone resorption marker urine
deoxypyridinoline (DPD) were used as indicators to measure changes in bone metabolism. The
following results were observed that Serum BAP was higher in dogs fed BP-enriched food
throughout the clinical investigation. Serum BAP was statistically significantly higher in
dogs fed BP-enriched food than in dogs fed non-BP-enriched food at 2 months after
orchidectomy. This suggests that BP promoted bone formation immediately after
orchidectomy.
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Affiliation(s)
- Toyokazu Kobayashi
- Laboratory of Veterinary Physiology, College of Bioresource Sciences, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
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Jia B, Xie L, Zheng Q, Yang PF, Zhang WJ, Ding C, Qian AR, Shang P. A hypomagnetic field aggravates bone loss induced by hindlimb unloading in rat femurs. PLoS One 2014; 9:e105604. [PMID: 25157571 PMCID: PMC4144882 DOI: 10.1371/journal.pone.0105604] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 07/25/2014] [Indexed: 12/27/2022] Open
Abstract
A hypomagnetic field is an extremely weak magnetic field--it is considerably weaker than the geomagnetic field. In deep-space exploration missions, such as those involving extended stays on the moon and interplanetary travel, astronauts will experience abnormal space environments involving hypomagnetic fields and microgravity. It is known that microgravity in space causes bone loss, which results in decreased bone mineral density. However, it is unclear whether hypomagnetic fields affect the skeletal system. In the present study, we aimed to investigate the complex effects of a hypomagnetic field and microgravity on bone loss. To study the effects of hypomagnetic fields on the femoral characteristics of rats in simulated weightlessness, we established a rat model of hindlimb unloading that was exposed to a hypomagnetic field. We used a geomagnetic field-shielding chamber to generate a hypomagnetic field of <300 nT. The results show that hypomagnetic fields can exacerbate bone mineral density loss and alter femoral biomechanical characteristics in hindlimb-unloaded rats. The underlying mechanism might involve changes in biological rhythms and the concentrations of trace elements due to the hypomagnetic field, which would result in the generation of oxidative stress responses in the rat. Excessive levels of reactive oxygen species would stimulate osteoblasts to secrete receptor activator of nuclear factor-κB ligand and promote the maturation and activation of osteoclasts and thus eventually cause bone resorption.
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Affiliation(s)
- Bin Jia
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Li Xie
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Qi Zheng
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Peng-fei Yang
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Wei-ju Zhang
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Chong Ding
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Ai-rong Qian
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Peng Shang
- Key Laboratory for Space Bioscience and Biotechnology, Institute of Special Environmental Biophysics, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
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16
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Anastasia L, Rota P, Anastasia M, Allevi P. Chemical structure, biosynthesis and synthesis of free and glycosylated pyridinolines formed by cross-link of bone and synovium collagen. Org Biomol Chem 2014; 11:5747-71. [PMID: 23873348 DOI: 10.1039/c3ob40945g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
This review focuses on the chemical structure, biosynthesis and synthesis of free and glycosylated pyridinolines (Pyds), fluorescent collagen cross-links, with a pyridinium salt structure. Pyds derive from the degradation of bone collagen and have attracted attention for their use as biochemical markers of bone resorption and to assess fracture risk prediction in persons suffering from osteoporosis, bone cancer and other bone or collagen diseases. We consider and critically discuss all reported syntheses of free and glycosylated Pyds evidencing an unrevised chemistry, original and of general utility, analysis of which allows us to also support a previously suggested non-enzymatic formation of Pyds in collagen better rationalizing and justifying the chemical events.
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Affiliation(s)
- Luigi Anastasia
- Department of Biomedical Sciences for Health, University of Milan, via F.lli Cervi 93, 20090 Segrate (Milan), Italy.
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Chubb SAP. Measurement of C-terminal telopeptide of type I collagen (CTX) in serum. Clin Biochem 2012; 45:928-35. [PMID: 22504058 DOI: 10.1016/j.clinbiochem.2012.03.035] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 03/26/2012] [Accepted: 03/28/2012] [Indexed: 01/27/2023]
Abstract
Serum CTX assays measure a fragment of the C-terminal telopeptide of type 1 collagen released during resorption of mature bone. Assay reagents are available in manual and automated formats and give good analytical performance. However their standardisation is not transparent and significant differences in results between methods have been demonstrated. CTX is most stable in EDTA plasma, although serum samples processed promptly would be satisfactory. sCTX shows a profound circadian rhythm, especially in non-fasting subjects; specimens should be collected from fasting patients at a well-defined time of day to minimise biological variation. Reference intervals in pre-menopausal women have been well studied but in other adult groups there is less information. Healthy children show the expected age-related variation corresponding to growth rate. Serum CTX fulfils or partially fulfils all the criteria of a reference bone turnover marker. Further studies aimed at reducing inter-method differences in results and establishing the relationships of sCTX with fracture risk and with fracture risk improvement with treatment are required.
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Affiliation(s)
- S A Paul Chubb
- School of Pathology and Laboratory Medicine and School of Medicine and Pharmacology, University of Western Australia, Australia.
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18
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Lee SH, Jin N, Paik DJ, Kim DY, Chung IM, Park Y. Consumption of legumes improves certain bone markers in ovariectomized rats. Nutr Res 2011; 31:397-403. [PMID: 21636018 DOI: 10.1016/j.nutres.2011.04.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2011] [Revised: 04/26/2011] [Accepted: 04/27/2011] [Indexed: 10/18/2022]
Abstract
Soybeans are known to protect against osteoporosis, but other legumes frequently consumed in Asia have not been studied to learn if they have a similar protective effect. This study investigated the hypothesis that consumption of soybean, mung bean, cowpea, and adzuki bean has beneficial effects on bone biomarkers in ovariectomized rats. Female Sprague-Dawley rats were either sham operated (sham; n = 7) or surgically ovariectomized and then fed a regular AIN-93M diet (OVX; n = 7) or AIN-93M containing soybean (n = 7), mung bean (n = 7), cowpea (n = 7), or adzuki beans (n = 7) for 10 weeks. No bean consumption significantly altered the body, subcutaneous fat, or uterus weight; however, consumption significantly increased the serum calcium/phosphorous ratio and decreased urinary calcium excretion compared with those of the OVX group. Serum concentration of 17β-estradiol was significantly lower in the OVX group compared with that of the sham group and was lowest in the group fed OVX diet containing soybean. Serum osteocalcin concentration was significantly higher in all OVX rats given a diet with beans compared with the same diet without, but urinary deoxypyridinoline excretion was lowest in the group fed OVX diet containing cowpea. There were no significant differences in bone mineral density or bone mineral content of the right femur, tibia, or lumbar spine or in the trabecular bone volume of the tibia among the diet groups. In conclusion, the consumption of soybean, mung bean, cowpea, and adzuki bean in OVX rats improved osteocalcin, but only those fed cowpea showed decreased bone resorption biomarker, suggesting that cowpea may have the most protective effect on bone in OVX rats.
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Affiliation(s)
- Sun Hee Lee
- Department of Food and Nutrition, Hanyang University, Haengdang-dong Seongdong-gu, Seoul 133-791, Korea
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Kraus VB, Burnett B, Coindreau J, Cottrell S, Eyre D, Gendreau M, Gardiner J, Garnero P, Hardin J, Henrotin Y, Heinegård D, Ko A, Lohmander LS, Matthews G, Menetski J, Moskowitz R, Persiani S, Poole AR, Rousseau JC, Todman M. Application of biomarkers in the development of drugs intended for the treatment of osteoarthritis. Osteoarthritis Cartilage 2011; 19:515-42. [PMID: 21396468 PMCID: PMC3568396 DOI: 10.1016/j.joca.2010.08.019] [Citation(s) in RCA: 220] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2010] [Revised: 08/21/2010] [Accepted: 08/28/2010] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Osteoarthritis (OA) is a chronic and slowly progressive disease for which biomarkers may be able to provide a more rapid indication of therapeutic responses to therapy than is currently available; this could accelerate and facilitate OA drug discovery and development programs. The goal of this document is to provide a summary and guide to the application of in vitro (biochemical and other soluble) biomarkers in the development of drugs for OA and to outline and stimulate a research agenda that will further this goal. METHODS The Biomarkers Working Group representing experts in the field of OA biomarker research from both academia and industry developed this consensus document between 2007 and 2009 at the behest of the Osteoarthritis Research Society International Federal Drug Administration initiative (OARSI FDA initiative). RESULTS This document summarizes definitions and classification systems for biomarkers, the current outcome measures used in OA clinical trials, applications and potential utility of biomarkers for development of OA therapeutics, the current state of qualification of OA-related biomarkers, pathways for biomarker qualification, critical needs to advance the use of biomarkers for drug development, recommendations regarding practices and clinical trials, and a research agenda to advance the science of OA-related biomarkers. CONCLUSIONS Although many OA-related biomarkers are currently available they exist in various states of qualification and validation. The biomarkers that are likely to have the earliest beneficial impact on clinical trials fall into two general categories, those that will allow targeting of subjects most likely to either respond and/or progress (prognostic value) within a reasonable and manageable time frame for a clinical study (for instance within 1-2 years for an OA trial), and those that provide early feedback for preclinical decision-making and for trial organizers that a drug is having the desired biochemical effect. As in vitro biomarkers are increasingly investigated in the context of specific drug treatments, advances in the field can be expected that will lead to rapid expansion of the list of available biomarkers with increasing understanding of the molecular processes that they represent.
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Affiliation(s)
- V B Kraus
- Department of Medicine, Duke University Medical Center, Durham, NC 27710, USA.
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Stevenson DA, Schwarz EL, Carey JC, Viskochil DH, Hanson H, Bauer S, Weng HYC, Greene T, Reinker K, Swensen J, Chan RJ, Yang FC, Senbanjo L, Yang Z, Mao R, Pasquali M. Bone resorption in syndromes of the Ras/MAPK pathway. Clin Genet 2011; 80:566-73. [PMID: 21204800 DOI: 10.1111/j.1399-0004.2010.01619.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Disorders of the Ras/mitogen-activated protein kinase (MAPK) pathway have an overlapping skeletal phenotype (e.g. scoliosis, osteopenia). The Ras proteins regulate cell proliferation and differentiation and neurofibromatosis type 1 (NF1) individuals have osteoclast hyperactivity and increased bone resorption as measured by urine pyridinium crosslinks [pyridinoline (Pyd) and deoxypyridinoline (Dpd)]. Pyd and Dpd are hydroxylysine-derived crosslinks of collagen found in bone and cartilage and excreted in the urine. Dpd is most abundant in bone. The aim of this study was to evaluate if other syndromes of the Ras/MAPK pathway have increased bone resorption, which may impact the skeletal phenotype. Participants were individuals with Noonan syndrome (n = 14), Costello syndrome (n = 21), and cardiofaciocutaneous (CFC) syndrome (n = 14). Pyridinium crosslinks from two consecutive first morning urines were extracted after acid hydrolysis and analyzed by high performance liquid chromatography. Three separate analyses of covariance were performed to compare Pyd, Dpd, and Dpd/Pyd ratio of each group to controls after controlling for age. Data were compared to 99 healthy controls. The Dpd and the Dpd/Pyd ratio were elevated (p < 0.0001) in all three conditions compared to controls suggesting that collagen degradation was predominantly from bone. The data suggest that the Ras/MAPK signal transduction pathway is important in bone homeostasis.
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Affiliation(s)
- D A Stevenson
- Department of Pediatrics, University of Utah, Salt Lake City, UT 84132, USA.
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Active Paget’s disease of bone with normal biomarkers of bone metabolism: a case report and review of the literature. Clin Rheumatol 2010; 30:139-44. [DOI: 10.1007/s10067-010-1579-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2010] [Accepted: 09/13/2010] [Indexed: 10/19/2022]
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Ardawi MSM, Maimani AA, Bahksh TA, Rouzi AA, Qari MH, Raddadi RM. Reference intervals of biochemical bone turnover markers for Saudi Arabian women: a cross-sectional study. Bone 2010; 47:804-14. [PMID: 20659600 DOI: 10.1016/j.bone.2010.07.017] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2009] [Revised: 07/11/2010] [Accepted: 07/17/2010] [Indexed: 11/27/2022]
Abstract
Biochemical bone turnover markers (BTMs) provide important information on the diagnosis, therapy and monitoring of metabolic bone diseases including osteoporosis. One goal of antiresorptive therapy in women is to decrease biochemical BTMs to the lower half of reference intervals for healthy pre-menopausal counterparts, using newly developed automated assays of such markers. The main objectives of the present study were to: (1) establish reference interval values for the following biochemical BTMs: serum osteocalcine (s-OC), bone alkaline phosphatase (s-bone ALP), procollagen type 1 N-terminal propeptide (s-PINP), crosslinked C-terminal telopeptide of Type 1 collagen (s-CTX), tartarate-resistant acid phosphatase isoform 5b (s-TRACP-5b) and urinary: CTX (u-CTX), N-telopeptides of type 1 collagen (u-NTX), pyridinoline (u-PYD) and deoxypyridinoline (u-DPD) in randomly selected Saudi healthy pre-menopausal women; (2) study the changes in biochemical BTMs in relation to age in pre- and post-menopausal women and the factors reported to influence bone turnover and (3) determine the effect of menopausal status on BTMs. A total of 2125 women were studied [including (n=1557) pre-, and (n=568) post-menopausal women, respectively, aged 20-79 years]. A total of 765 healthy pre-menopausal women (aged 35-45 years) were used to establish reference intervals for biochemical BTMs. All women studied were medically examined and had their bone mineral density (BMD) values obtained for the lumbar spine (L(1)-L(4)) and femoral neck according to detailed inclusion criteria. In all women, values of biochemical BTMs, decreased with increasing age up to the age of 45 years, increased steeply among women in their 50s and remained increased in post-menopausal women. Significant increases were evident in all biochemical BTMs in post-menopausal women with >5 years since menopause with the exception of s-OC, u-DPD, and u-PYD. Using stepwise multiple linear regression analysis, several variables were identified (depending on the BTM) as determinants of BTMs including age, BMI, parity, FSH, LH, PTH, s-Ca, s-Mg, s-PO(4) and 25(OH)D. In the reference intervals group, there are no significant correlations between any of the biochemical BTMs and age of menarche, day of menstrual cycle, physical activity, total daily dietary calcium and caffeine intakes and parity. It is recommended that the age range 35-45 years should be used when establishing biochemical BTMs reference intervals in Saudi Arabian pre-menopausal women.
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Effects of raloxifene and estradiol on bone turnover parameters in intact and ovariectomized rats. J Physiol Biochem 2010; 66:23-8. [DOI: 10.1007/s13105-010-0008-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Accepted: 09/29/2009] [Indexed: 11/28/2022]
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Griesmacher A, Peichl P, Pointinger P, Mateau R, Bröll H. Biochemical markers in menopausal women. Scandinavian Journal of Clinical and Laboratory Investigation 2010. [DOI: 10.1080/00365519709168309] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Affiliation(s)
- Pierre D Delmas
- Unité INSERM 403 and Service de Rhumatologie et de Pathologie Osseuse, Hôpital E. Herriot, Pavilion F, 69437, Lyon Cedex 03, France, +33-72 11 74 84, +33-72 11 74 83
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Eastell R. Bone turnover markers: an appreciation of the contribution of Dr. P.D. Delmas. Bone 2008; 43:649-52. [PMID: 18946897 DOI: 10.1016/j.bone.2008.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- R Eastell
- Academic Unit of Bone Metabolism, Metabolic Bone Centre, Northern General Hospital, Herries Road, Sheffield, South Yorkshire, England, UK.
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Abstract
The assay features of biochemical markers of bone turnover have markedly improved in the past few years. The most sensitive and specific markers of bone formation include serum bone alkaline phosphatase, total osteocalcin (including the intact molecule and the large N-mid fragment) and the procollagen type I N-terminal propeptide assay. Among the various markers of bone resorption, measurements of the urinary excretion of N- and C-terminal cross-linked telopeptides) and of serum C-terminal cross-linked telopeptides are the most sensitive and specific. Markers of bone turnover can be used to predict the rate of bone loss in post-menopausal women and can also be used to assess the risk of fractures. In osteoporosis-treatment studies (with alendronate, risedronate, raloxifene) markers of bone turnover appear even more strongly associated with fracture risk reduction than bone mineral density (BMD). These observations support the use of markers of bone turnover as surrogates for fracture risk reduction, perhaps even more so than BMD. Bone markers can also be used to monitor the efficacy of antiresorptive therapy such as hormone-replacement therapy, raloxifene and bisphosphonates in individual patients. Furthermore, they have also proved to be helpful in monitoring the response to nutritional interventions and have the advantage over BMD in that they provide information about mechanism of effect and changes are often observed much more rapidly.
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Kraenzlin ME, Kraenzlin CA, Meier C, Giunta C, Steinmann B. Automated HPLC assay for urinary collagen cross-links: effect of age, menopause, and metabolic bone diseases. Clin Chem 2008; 54:1546-53. [PMID: 18653826 DOI: 10.1373/clinchem.2008.105262] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND The pyridinium cross-links pyridinoline (PYD) and deoxypyridinoline (DPD) are established markers of bone resorption. We evaluated the analytical and clinical performance of a commercially available PYD HPLC assay and established reference intervals in children and adults. METHODS We used a commercially available reagent set (Chromsystems Instruments & Chemicals) to measure PYD and DPD in 319 healthy controls (156 premenopausal women, 80 healthy men, and 83 healthy children age 1 month to 14 years) and 397 patients with metabolic bone diseases (postmenopausal osteoporosis, n = 175; male osteoporosis, n = 176; hyperparathyroidism, n = 17; hyperthyroidism, n = 19; Paget disease, n = 10). RESULTS The mean intraassay and interassay CVs were <6% and <8% for both PYD and DPD, respectively. The reference interval was constant for premenopausal women in the age group 20-49 years. In men, cross-link values peaked at 20-29 years and decreased thereafter. Women with postmenopausal osteoporosis had significantly higher PYD (51%) and DPD (58%) values compared to premenopausal women. Similar results were found in osteoporotic men. In children the highest values were found in the first weeks and months after birth, followed by a decrease of 50%-60% at age 11-14 years. In metabolic bone diseases cross-link concentrations were significantly increased. The DPD:PYD ratio (mean value approximately 0.2) was remarkably constant in all populations evaluated. CONCLUSIONS The automated HPLC assay is a precise and convenient method for PYD and DPD measurement. We established reference intervals for adult women and men and for children up to 14 years old. The cross-link concentrations we determined by use of this HPLC method confirm its clinical value in enabling identification of increased bone resorption in patients with metabolic bone diseases.
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Affiliation(s)
- Marius E Kraenzlin
- Division of Endocrinology, Diabetes, and Clinical Nutrition, University Hospital, CH-4031 Basel, Switzerland.
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Mechanisms of the anabolic effects of teriparatide on bone: insight from the treatment of a patient with pycnodysostosis. J Bone Miner Res 2008; 23:1076-83. [PMID: 18302508 DOI: 10.1359/jbmr.080231] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Pycnodysostosis is an extremely rare genetic osteosclerosis caused by cathepsin K deficiency. We hypothesized that teriparatide, a potent anabolic agent used in the treatment of osteoporosis, might reduce skeletal fragility by activating bone turnover. We studied a typical case of pycnodysostosis in a 37-yr-old woman who exhibited short stature, skull and thorax deformities, and a history of severe fragility fractures. Cathepsin K gene sequencing was performed. Before and after 6 mo of 20 microg/d teriparatide, biochemical markers of bone turnover were measured, and 3D bone structure and microarchitecture was assessed in vivo by HR-pQCT. Qualitative and quantitative analysis of transiliac bone biopsies were performed, and the degree of mineralization was evaluated by quantitative microradiography. In vitro assessment of bone resorption was performed after separation and differentiation of CD14(+) monocytes from peripheral blood. Bone structure assessed by HR-pQCT on the radius and tibia showed augmentation of cortical and trabecular density. Transiliac bone biopsy showed highly increased bone mass (+63% versus age- and sex-matched controls), a decrease in bone remodeling without evidence of active osteoblasts, and a severe decrease in the dynamic parameters of bone formation (mineralizing surfaces, -90% and bone formation rate, -93% versus age- and sex-matched controls). This depressed bone turnover probably explained the increased degree of mineralization. The presence of a novel missense mutation leading to an A141V amino acid substitution confirmed a genetic defect of cathepsin K as the cause of the disease. The deficiency of active osteoclasts was confirmed by an in vitro study that showed a decreased concentration of CD14(+) monocytes (the precursor of osteoclasts) in blood. These osteoclasts had low resorptive activity when incubated on bone slices. After 6 mo of teriparatide, the structure, microarchitecture, and turnover of bone--assessed by HR-pQCT, histology, and bone turnover markers--remained unchanged. Our data strongly suggest that some features of the osteoclastic phenotype--that are absent in pycnodysostosis--are a prerequisite for the anabolic effect of PTH on osteoblasts.
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Schutte R, Nawrot TS, Richart T, Thijs L, Vanderschueren D, Kuznetsova T, Van Hecke E, Roels HA, Staessen JA. Bone resorption and environmental exposure to cadmium in women: a population study. ENVIRONMENTAL HEALTH PERSPECTIVES 2008; 116:777-83. [PMID: 18560534 PMCID: PMC2430234 DOI: 10.1289/ehp.11167] [Citation(s) in RCA: 152] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Accepted: 02/25/2008] [Indexed: 05/18/2023]
Abstract
BACKGROUND Environmental exposure to cadmium decreases bone density indirectly through hypercalciuria resulting from renal tubular dysfunction. OBJECTIVE We sought evidence for a direct osteotoxic effect of cadmium in women. METHODS We randomly recruited 294 women (mean age, 49.2 years) from a Flemish population with environmental cadmium exposure. We measured 24-hr urinary cadmium and blood cadmium as indexes of lifetime and recent exposure, respectively. We assessed the multivariate-adjusted association of exposure with specific markers of bone resorption, urinary hydroxylysylpyridinoline (HP) and lysylpyridinoline (LP), as well as with calcium excretion, various calciotropic hormones, and forearm bone density. RESULTS In all women, the effect sizes associated with a doubling of lifetime exposure were 8.4% (p=0.009) for HP, 6.9% (p=0.10) for LP, 0.77 mmol/day (p=0.003) for urinary calcium, -0.009 g/cm(2) (p=0.055) for proximal forearm bone density, and -16.8% (p=0.065) for serum parathyroid hormone. In 144 postmenopausal women, the corresponding effect sizes were -0.01223 g/cm(2) (p=0.008) for distal forearm bone density, 4.7% (p=0.064) for serum calcitonin, and 10.2% for bone-specific alkaline phosphatase. In all women, the effect sizes associated with a doubling of recent exposure were 7.2% (p=0.001) for urinary HP, 7.2% (p=0.021) for urinary LP, -9.0% (p=0.097) for serum parathyroid hormone, and 5.5% (p=0.008) for serum calcitonin. Only one woman had renal tubular dysfunction (urinary retinol-binding protein >338 microg/day). CONCLUSIONS In the absence of renal tubular dysfunction, environmental exposure to cadmium increases bone resorption in women, suggesting a direct osteotoxic effect with increased calciuria and reactive changes in calciotropic hormones.
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Affiliation(s)
- Rudolph Schutte
- Studies Coordinating Centre, Division of Hypertension and Cardiovascular Rehabilitation Unit, Department of Molecular and Cardiovascular Research, University of Leuven, Leuven, Belgium
- Department of Physiology, School for Physiology, Nutrition and Consumer Sciences, North-West University, Potchefstroom, South Africa
| | - Tim S. Nawrot
- Studies Coordinating Centre, Division of Hypertension and Cardiovascular Rehabilitation Unit, Department of Molecular and Cardiovascular Research, University of Leuven, Leuven, Belgium
| | - Tom Richart
- Studies Coordinating Centre, Division of Hypertension and Cardiovascular Rehabilitation Unit, Department of Molecular and Cardiovascular Research, University of Leuven, Leuven, Belgium
| | - Lutgarde Thijs
- Studies Coordinating Centre, Division of Hypertension and Cardiovascular Rehabilitation Unit, Department of Molecular and Cardiovascular Research, University of Leuven, Leuven, Belgium
| | - Dirk Vanderschueren
- Section of Experimental Medicine and Endocrinology, Department of Experimental Medicine, University of Leuven, Leuven, Belgium
| | - Tatiana Kuznetsova
- Studies Coordinating Centre, Division of Hypertension and Cardiovascular Rehabilitation Unit, Department of Molecular and Cardiovascular Research, University of Leuven, Leuven, Belgium
| | - Etienne Van Hecke
- Section of Social and Economic Geography, Department of Geography and Geology, University of Leuven, Leuven, Belgium
| | - Harry A. Roels
- Industrial Toxicology and Occupational Medicine Unit, Department of Public Health, Université catholique de Louvain, Brussels, Belgium
| | - Jan A. Staessen
- Studies Coordinating Centre, Division of Hypertension and Cardiovascular Rehabilitation Unit, Department of Molecular and Cardiovascular Research, University of Leuven, Leuven, Belgium
- Address correspondence to J.A. Staessen, Studie-coördinatiecentrum, Laboratorium Hypertensie, Campus Gasthuisberg, Herestraat 49, Box 702, B-3000 Leuven, Belgium. Telephone: 32-16-34-7104. Fax: 32-16-34-7106. E-mail:
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Stevenson DA, Schwarz EL, Viskochil DH, Moyer-Mileur LJ, Murray M, Firth SD, D'Astous JL, Carey JC, Pasquali M. Evidence of increased bone resorption in neurofibromatosis type 1 using urinary pyridinium crosslink analysis. Pediatr Res 2008; 63:697-701. [PMID: 18317233 PMCID: PMC3235045 DOI: 10.1203/pdr.0b013e31816fee45] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Although neurofibromatosis type 1 (NF1) is a neurocutaneous disorder, skeletal abnormalities such as long-bone dysplasia, scoliosis, sphenoid wing dysplasia, and osteopenia are observed. To investigate the role of bone resorption as a mechanism for the bony abnormalities, we selected urinary pyridinium crosslinks (collagen degradation products excreted in urine) as a measure of bone resorption in NF1. Bone resorption was evaluated by quantitative assessment of the urinary excretion of pyridinium crosslinks [pyridinoline (Pyd) and deoxypyridinoline (Dpd)]. Total (free plus peptide-bound) pyridinium crosslinks from the first morning urines from 59 NF1 children (ages 5-19) were extracted and analyzed (17 children with a localized skeletal dysplasia, and 42 without). The data were compared with a healthy reference population without NF1 (n = 99). Multivariate analyses, controlling for age showed statistically significant increases for Dpd (p < 0.001) and the Dpd/Pyd ratio (p < 0.001) in NF1 individuals with and without a skeletal dysplasia. NF1 children have an increase in the urinary excretion of pyridinium crosslinks, reflecting increased bone resorption. The effects of NF1 haploinsufficiency likely contribute to abnormal bone remodeling, either directly or indirectly by aberrant Ras signaling, potentially predisposing NF1 individuals to localized skeletal defects.
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Affiliation(s)
- David A Stevenson
- Department of Pediatrics, University of Utah, Salt Lake City, Utah 84132, USA.
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Vasikaran SD. Utility of biochemical markers of bone turnover and bone mineral density in management of osteoporosis. Crit Rev Clin Lab Sci 2008; 45:221-58. [PMID: 18415816 DOI: 10.1080/10408360801949442] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Biochemical markers of bone turnover (bone-turnover markers) are released during bone formation or resorption and can be measured in blood and/or urine. The concentration of bone-turnover markers in serum or urine reflect bone remodeling activity and can potentially be used as surrogate markers of the rate of bone formation or bone resorption. While the diagnosis of osteoporosis is based on bone mineral density (BMD), the absolute fracture risk for a particular BMD measurement varies several fold depending on age and is also influenced by other clinical risk factors. The measurement of bone-turnover markers may be of additional value to BMD and clinical risk factors in fracture risk assessment by improving the sensitivity and specificity of prediction of future fractures. In clinical practice, bone-turnover markers may help make cost-effective treatment decisions in patients with borderline absolute risk. BMD changes following treatment cannot be detected with confidence for 12-24 months due to measurement imprecision. Bone-turnover markers, which show an early response following treatment, may be useful for monitoring therapy, identifying non-compliance and non-responders, and predicting early response to therapy. This review concludes by identifying the need for internationally agreed-upon standards for bone resorption and formation.
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Affiliation(s)
- Samuel D Vasikaran
- Department of Core Clinical Pathology and Biochemistry, PathWest Laboratory Medicine, Royal Perth Hospital, Perth, WA, Australia.
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Davis CR, Karl J, Granell R, Kirwan JR, Fasham J, Johansen J, Garnero P, Sharif M. Can biochemical markers serve as surrogates for imaging in knee osteoarthritis? ACTA ACUST UNITED AC 2008; 56:4038-47. [PMID: 18050200 DOI: 10.1002/art.23129] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Osteoarthritis (OA) is a complex heterogeneous joint disease affecting more than 35 million people worldwide. The current gold standard diagnostic investigation is the plain radiograph, which lacks sensitivity. Biochemical markers have the potential to act as adjunct markers for imaging in the assessment of knee OA. We undertook this study to determine the association between individual biochemical markers and radiographic features, and to establish whether the association is strengthened when selected biochemical markers are combined into a single factor (a theoretical marker). METHODS Twenty serum and urinary biochemical markers were analyzed in 119 patients with predominantly tibiofemoral knee OA. Pearson's correlation was performed, and corresponding coefficients of determination (R(2)) were calculated to determine the association between biochemical markers and a range of imaging features from radiographs and dual x-ray absorptiometry of the knee. Biochemical markers demonstrating a significant association (P < 0.05) with a specific imaging feature were combined by principal components analysis (PCA). Pearson's correlation was repeated to establish whether the combined panel of biochemical markers showed a stronger association with imaging than the best single marker. RESULTS Fourteen biochemical markers showed significant associations with one or more imaging features. By combining specific panels of biochemical markers to form factors, the association of markers with imaging features (R(2)) increased from 11.9% to 22.7% for the Kellgren/Lawrence (K/L) score, from 5.9% to 9.2% for joint space width (JSW), from 6.6% to 10.8% for sclerosis, from 13.5% to 22.6% for osteophytes, and from 12.0% to 14.2% for bone mineral density (BMD). Biochemical markers identifying patients with osteophytes overlapped with those correlated with a high K/L score, while markers of subchondral BMD formed a completely separate group. Biochemical markers of JSW included markers associated with both osteophytes and BMD. CONCLUSION The PCA results suggest that biochemical marker combinations may be more sensitive than individual biochemical markers for reflecting structural damage in patients with knee OA. The differences in biochemical marker profiles associated with osteophytes compared with those associated with subchondral BMD raise the possibility that these 2 processes, commonly seen in bone in knee OA, have underlying biologic differences.
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Affiliation(s)
- C R Davis
- Department of Anatomy, University of Bristol, Southwell Street, Bristol, UK
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Nishizawa Y, Inaba M, Ishii M, Yamashita H, Miki T, Goto H, Yamada S, Chaki O, Kurasawa K, Mochizuki Y. Reference intervals of serum tartrate-resistant acid phosphatase type 5b activity measured with a novel assay in Japanese subjects. J Bone Miner Metab 2008; 26:265-70. [PMID: 18470668 DOI: 10.1007/s00774-007-0826-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/14/2007] [Indexed: 11/30/2022]
Abstract
Among the isotypes of serum tartrate-resistant acid phosphatase (TRACP), only type 5b (TRACP-5b) is derived from osteoclasts, and it is necessary to develop an assay specific for this TRACP-5b for evaluation of osteoclastic activity. Recently, a novel assay system for TRACP-5b called the fragments absorbed immunocapture enzymatic assay (FAICEA) has been developed. With two unique monoclonal antibodies, one that is highly specific for TRACP-5b and another which absorbs inactive TRACP-5b fragments that interfere with measuring active TRACP-5b, this assay provides correct measurement of TRACP-5b activity in the serum without interference by the inactive fragments of TRACP-5b and other isotypes of TRACP, especially TRACP-5a. To study the reference data of Japanese subjects, we measured TRACP-5b activity in the serum of 320 men (age, 20-82 years) and 466 women [315 premenopausal (age, 18-55 years) and 151 postmenopausal (age, 45-77 years)] with this novel assay. In men, serum TRACP-5b activity did not vary significantly with age. The postmenopausal women had significantly higher serum TRACP-5b activity than the premenopausal women. The reference intervals (logarithmic mean +/-1.96 SD) for men, premenopausal women, and postmenopausal women were 1.7-5.9 U/l, 1.2-4.4 U/l, and 2.5-7.6 U/l, respectively.
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Affiliation(s)
- Yoshiki Nishizawa
- Department of Metabolism, Endocrinology and Molecular Medicine, Osaka City University Graduate School of Medicine, Abeno-ku, Osaka, 545-8585, Japan.
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Kurosaki N, Yamato O, Sato J, Naito Y, Mori F, Imoto S, Maede Y. Biomarkers for the activation of calcium metabolism in dairy cows: elevation of tartrate-resistant acid phosphatase activity by lowering dietary cation-anion difference is associated with the prevention of milk fever. J Vet Med Sci 2007; 69:265-70. [PMID: 17409642 DOI: 10.1292/jvms.69.265] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
In our previous study, it was demonstrated that the administration of anion salts, which slightly lower the dietary cation-anion difference (DCAD), in the prepartum period is safe and effective for preventing milk fever in multiparous cows. In the present study, several biomarkers, which might show activation of Ca metabolism, were analyzed using stored samples in the previous study to investigate the mechanism of the preventive effect on milk fever by lowering DCAD. Changes in bone-specific alkaline phosphatase activity, osteocalcin and insulin-like growth factor I concentrations in serum were almost the same among the three groups of multiparous cows with or without the oral administration of anion salts, while the levels of these serum biomarkers in the group of primiparous cows (heifer group) were much higher compared with those in the three multiparous groups throughout the experimental period. Urinary deoxypyridinoline excretion was not a useful biomarker for dairy cows because it hardly changed during the peripartum period in all groups. However, serum tartrate-resistant acid phosphatase (TRAP) activity, which is known as a biomarker of osteoclast activity, was well associated with the administration of anion salts lowering DCAD because among the three multiparous groups, only the group of multiparous cows fed the anion salts (anion group) showed an increased level, which rose to the level in the heifer group, and was markedly higher than those in the other control groups of multiparous cows. The increased activity of serum TRAP in the anion group suggested that Ca in the plasma pool was mobilized smoothly from bone-bound Ca via mature osteoclasts at parturition, which might be due to prior activation under mild acidosis induced by slightly lowering DCAD. Therefore, TRAP was the best biomarker to monitor the activation of Ca metabolism in dairy cows fed anion salts.
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Affiliation(s)
- Naotoshi Kurosaki
- Laboratory of Internal Medicine, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Japan
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Abstract
Effective therapies are available for the patient who has arthritic osteoporosis. The approach is critical to ensure an optimal quality of life in these individuals who suffer with a disease that is clearly treatable.
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Affiliation(s)
- Lee S Simon
- Harvard Medical School, Beth Israel Deaconess Hospital, 330 Brookline Avenue, Boston, MA 02215, USA.
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Buhimschi CS, Buhimschi IA, Zhao G, Funai E, Peltecu G, Saade GR, Weiner CP. Biomechanical Properties of the Lower Uterine Segment Above and Below the Reflection of the Urinary Bladder Flap. Obstet Gynecol 2007; 109:691-700. [PMID: 17329522 DOI: 10.1097/01.aog.0000236448.61465.95] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To test the hypothesis that differences in the matrix arrangement of the lower uterine segment (above and below the reflection of the bladder flap) translate to differences in biomechanical or structural properties of the uterine wall. METHODS We enrolled prospectively 40 women at term randomized to a bladder flap (n=21) versus no bladder flap (n=19) at the time of a cesarean delivery for dystocia. Tensile properties of tissue biopsies from the upper and lower edges of the hysterotomy incision were quantitated using a stretching regimen designed to mimic labor. Parameters such as slope, yield point, and break point were analyzed in relationship to biochemical (total collagen, sulfated glycosaminoglycans, pyridinoline-deoxypyridinoline) and histological (collagen birefringence) properties of the tissue. RESULTS The lower edge of the hysterotomy had a higher collagen content than the upper, independently of whether the hysterotomy site was above or below the reflection of the bladder (P<.001 for edge level, P=.8 for bladder flap). The pyridinoline-to-collagen ratio (a reflection of collagen cross-linking) was significantly decreased in the lower edge of the hysterotomy, independently of a bladder flap (P<.001). Neither collagen birefringence nor the amount of sulfated glycosaminoglycans differed among sites. There were no significant differences in biomechanical properties between the upper and lower edges of the hysterotomy, whether or not a bladder flap was created. CONCLUSION The lower uterine segment of women with dystocia maintains its overall biomechanical properties despite significant quantitative and qualitative differences in fibrillar collagen between the upper and lower edge of the hysterotomy incision. LEVEL OF EVIDENCE II.
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Affiliation(s)
- Catalin S Buhimschi
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University, New Haven, Connecticut 06520, USA.
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Shiga K, Nishimukai M, Tomita F, Hara H. Ingestion of difructose anhydride III, a non-digestible disaccharide, improves postgastrectomy osteopenia in rats. Scand J Gastroenterol 2006; 41:1165-73. [PMID: 16990201 DOI: 10.1080/00365520600575753] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Total gastrectomy produces osteopenia with calcium malabsorption. We previously demonstrated that difructose anhydride III (DFAIII), a non-digestible disaccharide, stimulates intestinal calcium absorption in normal and ovariectomized rats. In the present study, we examined the effects of feeding DFAIII on gastrectomy-induced calcium malabsorption and osteopenia in rats. The potential of DFAIII to promote large intestinal calcium absorption was also evaluated through comparison with that of fructooligosaccharides (FOS). MATERIAL AND METHODS Male Sprague-Dawley rats were divided into two groups: totally gastrectomized and sham-operated rats. After a postoperative recovery period, rats from each group were divided into three subgroups and fed the control, DFAIII (30 g/kg), or FOS (30 g/kg) diet for 28 days. RESULTS Total gastrectomy severely reduced net calcium absorption, femoral calcium content and bone mineral density, resulting in fragility of the femur. DFAIII or FOS feeding partly and similarly restored the lowered calcium absorption and femoral variables, with an increase in the total short-chain fatty acid pool in the cecum. In gastrectomized rats, net calcium absorption was correlated with several cecal parameters, suggesting that cecal fermentation of DFAIII is associated with the improvement in gastrectomy-induced calcium malabsorption. Urinary excretion of deoxypyridinoline (D-Pyr) as a marker of bone resorption was increased by gastrectomy, and the elevated D-Pyr excretion was suppressed by feeding DFAIII. CONCLUSIONS Supplemental feeding of DFAIII partly prevents postgastrectomy osteopenia as a result of an improvement in calcium absorption. Our results suggest that the promotive effects of DFAIII on calcium absorption in the large intestine are comparable to those of FOS.
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Affiliation(s)
- Kazuki Shiga
- Northern Advancement Center for Science and Technology, Colabo-Hokkaido, Sapporo, Japan
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Yilmaz B, Seyran AD, Sandal S, Aydin M, Colakoglu N, Kocer M, Carpenter DO. Modulatory effects of Aroclors 1221 and 1254 on bone turnover and vertebral histology in intact and ovariectomized rats. Toxicol Lett 2006; 166:276-84. [PMID: 16978806 DOI: 10.1016/j.toxlet.2006.08.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2006] [Revised: 08/02/2006] [Accepted: 08/06/2006] [Indexed: 11/24/2022]
Abstract
Polychlorinated biphenyls (PCBs) are persistent environmental pollutants. Two PCB mixtures, Aroclors 1221 and 1254 have been suggested to have estrogenic and anti-estrogenic properties, respectively. We have examined whether these PCB mixtures modulate bone turnover and vertebral histology in intact and ovariectomized (ovx) rat models. Thirty-two adult female rats were divided into four groups subcutaneously receiving 4% DMSO (control), A1221 (10 mg/kg), A1254 (10 mg/kg) oestradiol (E2, 30 microg/kg). These compounds were injected to the animals for a period of 6 weeks at two daily intervals. In the second model, rats (n=32) were ovx and allowed to recover for a period of 3 weeks. Control group received vehicle (4% DMSO) alone. Remaining rats were divided into three groups and injected (s.c.) with A1221, A1254 and E2 for 5 weeks. Urine samples were collected prior to end of the experiments. Then, all animals were decapitated. Serum parathyroid hormone (PTH), calcitonin and osteocalcin levels were determined by immunoradiometric method. Serum concentrations of alkaline phosphatase (ALP), calcium and inorganic phosphate were determined by enzymatic-colorimetric method. Urinary deoxypyridinoline (DPD) was measured by ELISA. Lumbar vertebrae (L2) of all animals were dissected out and processed for light microscopy. Levels of urinary DPD were significantly lowered in E2 -treated intact rats (p<0.001). Ovx significantly increased urinary DPD excretion (p<0.01) compared to intact control values. Administration of A1221 and A1254 had no significant effects in intact rats, however, they significantly reduced (p<0.05) and increased (p<0.001) urinary DPD levels in ovx rats, respectively. Neither of the PCB mixtures significantly changed serum osteocalcin and ALP levels in intact or ovx rats (except A1221 increased ALP in intact model, p<0.01). Both PCB mixtures had differential effects on serum PTH, calcitonin, calcium and inorganic phosphate concentrations. Treatment with A1221 reversed the adverse effects of ovariectomy on L2 histology. However, A1254 produced necrotic areas in vertebral bone, and this effect was expanded in ovx animals. Our findings suggest that both Aroclor compounds interfere with bone turnover mechanisms, particularly in ovx rats.
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Affiliation(s)
- Bayram Yilmaz
- Firat University Medical School, Department of Physiology, Elaziğ, Turkey.
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Arbault P, Gineyts E, Grimaux M, Seguin P, Delmas PD. A Rapid Procedure for Purifying Large Amounts of Pyridinoline Crosslinks of Bone. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10826079408013473] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- P. Arbault
- a Cis Bio International , BP 175 30203, Bagnols sur Cèze , Cedex , France
| | - E. Gineyts
- b INSERM Unité 234, Hôpital E. Herriot , 69437, Lyon , Cedex , 03 , France
| | - M. Grimaux
- a Cis Bio International , BP 175 30203, Bagnols sur Cèze , Cedex , France
| | - P. Seguin
- a Cis Bio International , BP 175 30203, Bagnols sur Cèze , Cedex , France
| | - P. D. Delmas
- b INSERM Unité 234, Hôpital E. Herriot , 69437, Lyon , Cedex , 03 , France
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Reiter AL, Volk A, Vollmar J, Fromm B, Gerner HJ. Changes of basic bone turnover parameters in short-term and long-term patients with spinal cord injury. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2006; 16:771-6. [PMID: 16830131 PMCID: PMC2200720 DOI: 10.1007/s00586-006-0163-3] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2005] [Revised: 05/20/2006] [Accepted: 05/23/2006] [Indexed: 10/24/2022]
Abstract
The bone mineral density (BMD), the cross- links (PYD, DPD and NTx) and the bone specific alcaline phosphatase (BAP) was investigated in a cross-sectional study in 62 male patients with spinal cord injury (SCI), n = 28 short-term (0-1 year after SCI) and n = 34 long-term SCI patients (> 5 years after SCI). Knowledge about this parameters are necessary to find an adequate therapy for this special kind of osteoporosis. Immobilisation osteoporosis in SCI patients is a well-known problem that may lead to pathological fractures. Little is known regarding the extend of the osteoporosis as well as the causative factors. Measurements of the BMD in the proximal femur and the lumbar spine were performed with dual-energy-X-ray-absorptiometry (DEXA), of the osteoblast marker BAP (bone specific alkaline phosphatase) from serum and the osteoclast markers PYD (pyridinoline), DPD (desoxy-pyridinoline) and NTx (N-telopeptide of collagen type I) from urine. We found a significant decrease of BMD in the proximal femur and no relevant change in the lumbar spine compared to an age- and sex correlated control group (Z-score) in short-term and long-term SCI patients. There was a significant bone loss at the proximal femur between short and long-term SCI patients, whereas at the lumbar spine the BMD even slightly increases. Bone resorption (cross-links) was increased in both groups, though in long-term SCI patients it is significantly decreased compared to short-term SCI patients (DPD from 211.7 micro/g creatinine to 118.1 micro/g creatinine; NTx from 215.1 nmol/mmol creatinine to 83,6 nmol/mmol creatinine). The bone formation marker BAP is slightly below normal range in both groups (12.3 U/l in short-term, 9.7 U/l in long- term SCI patients). Only the proximal femur is affected by the immobilisation osteoporosis of SCI patients, therefore the BMD measurements in these patients should be performed at the lower limb. The problem of the immobilisation osteoporosis in SCI patients is the striking increase of bone resorption and the missing reaction of the bone formation.
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Affiliation(s)
- Andreas Ludwig Reiter
- Department of Orthopedics, Vulpius Klinik Bad Rappenau, Bad Rappenau, Baden-Württemberg, Germany.
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Hayirlioglu A, Gökaslan H, Andaç N. The effect of bilateral oophorectomy on bone mineral density. Rheumatol Int 2006; 26:1073-7. [PMID: 16715291 DOI: 10.1007/s00296-006-0134-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2005] [Accepted: 01/15/2006] [Indexed: 12/18/2022]
Abstract
The objective of this study is to investigate the effect of bilateral oophorectomy with total abdominal hysterectomy on bone loss, comparing the cases having surgery before and after the menopause. Bone mineral density (BMD) measurements were obtained from the lumbar spine and femoral neck of totally 127 cases. Out of 127, 105 had surgery before menopause and 22 cases were operated on postmenopausally. The results were compared with the USA normal values. The average age of surgical menopause (SM) cases was 48.45 years with a mean duration of menopause of 5.77 years. The average height and weight were 157.67 cm and 68.19 kg, respectively. The average age of cases having surgery after menopause (SAM) was 62.45 years with a mean duration of 5.59 years after the surgery (duration after menopause is 13.23 years). The average height and weight were 157.45 cm and 73.55 kg, respectively. The average of BMD measurements of lumbar spines L2-L4 was 1.04 gr/cm(2) (BMD = 85.65% and T score = -0.96) in the cases with SM. On the contrary, the average of the BMD measurements of lumbar spines L2-L4 was 1.05 gr/cm(2) (BMD = 101.14% and T score = 0.24) in the cases with SAM. The average of the BMD measurements of femoral neck was 0.85 gr/cm(2) (BMD = 91.39% and T score = -0.64) in the cases with SM. On the contrary, the average of the BMD measurements of femoral neck was 0.82 gr/cm(2) (BMD = 96.69% and T score = -0.31) in the cases with SAM. The bilateral oophorectomy as a surgical procedure is not a statistically significant factor for the acceleration of the bone loss. The main points are the age and the duration of menopause of the patient affecting the bone loss if the surgery is performed before menopause.
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Affiliation(s)
- Alper Hayirlioglu
- Department of Radiology, Sağlik Bakanliği Göztepe Eğitim ve Araştirma Hastanesi, Istanbul, Turkey
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Do SH, Jeong WI, Jeong DH, Ki MR, Lee IS, Kwak DM, Kim TH, Kim YK, Kim SB, Jeong KS. Alcohol-induced bone degradation and its early detection in the alcohol-fed castrated rats. Mol Cell Biochem 2006; 282:45-52. [PMID: 16317511 DOI: 10.1007/s11010-006-1155-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2005] [Accepted: 07/20/2005] [Indexed: 10/25/2022]
Abstract
The objective of this study was to examine alcohol-induced changes of bone in hormone-deficient males using the developed method. In the process of bone resorption, type I collagen crosslinking molecules, pyridinoline (PYD), are released into the circulation and cleared by the kidneys. (2)H(2)O as a tracer has been applied to measure the synthesis rates of slow-turnover proteins and successfully applied to bone collagen synthesis in our hormone deficiency rats. This study demonstrated for the first time, the early changes of the femur bone degradation in hormone-deficient male individuals, more influenced by alcohol through histopathological study, serum PYD assay, and (2)H(2)O labeling. We also observed that serum PYD was a sensitive pathological marker of bone degradation in castrated osteoporosis males and the unique features of (2)H(2)O labeling to measure the bone turnover collagen synthesis rates were excellent markers of bone degradation and aging.
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Affiliation(s)
- Sun Hee Do
- Department of Veterinary Pathology, College of Veterinary Medicine, Kyungpook National University, #1370 Sangyeok-dong, Buk-gu, Daegu 702-701, Republic of Korea
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Buhimschi CS, Buhimschi IA, Yu C, Wang H, Sharer DJ, Diamond MP, Petkova AP, Garfield RE, Saade GR, Weiner CP. The effect of dystocia and previous cesarean uterine scar on the tensile properties of the lower uterine segment. Am J Obstet Gynecol 2006; 194:873-83. [PMID: 16522428 DOI: 10.1016/j.ajog.2005.09.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2005] [Revised: 07/07/2005] [Accepted: 09/14/2005] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The remodeling of uterine connective tissue during labor can lead to the reorganization of the extracellular matrix that, in turn, may influence the biomechanical properties of the myometrial wall. We hypothesized that the stretching of the lower uterine segment in laboring women with dystocia changes the viscoelastic properties of the uterine wall. STUDY DESIGN We tested the tensile strength of lower uterine segment myometrium in 68 pregnant women at term. The biomechanical, structural, and biochemical properties were compared among 3 groups: (1) 39 laboring women who underwent primary low-transverse cesarean delivery for labor dystocia, (2) 12 nonlaboring women who underwent primary elective low-transverse cesarean delivery and (3) 17 women who underwent an elective repeat low-transverse cesarean delivery at term. The tensile properties were quantitated with a stretching regimen that was designed to mimic the conditions of labor. Parameters such as slope, yield point, and break point were recorded, analyzed, and interpreted. Biochemical properties were determined by the measurement of the sulfated glycosaminoglycans, hydroxyproline, and pyridinoline-deoxypyridinoline. Histologic properties of the connective tissue were assessed by collagen birefringence. Lastly, the association between these properties and biomechanical responses were compared among groups. RESULTS Lower uterine segment myometrium specimens obtained from laboring women were stiffer compared with specimens from women who were not in labor (P = .013) or had scarred myometrium (P < .001). The force that was required to reach the yield point was similar between labor and nonlabor groups (P = .216). Likewise, a previous lower uterine segment scar did not alter the yield point. The break point was similar among all groups (P = .317). Sulfated glycosaminoglycan levels were unaffected by labor or scarring (P = .354). Scarred lower uterine segment myometrium had a higher collagen content compared with unscarred myometrium specimens that were obtained during labor (P = .025). Although there were similar degrees of collagen cross-linking among groups (P = .212), there was lower collagen birefringence in myometrium from laboring women compared with nonlaboring women (P < .001). CONCLUSION Labor alters the viscoelastic properties of myometrium. Lower uterine segment myometrium is stiffest in women with dysfunctional labor compared with nonlabor control subjects. Labor and scarring also alter the pattern of collagen birefringence. Similar collagen cross-linking among the study groups may explain the reason that the breaking strength of the tissue is not altered by the state of labor and the reason that the rupture of the uterine scar is a rare event.
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Affiliation(s)
- Catalin S Buhimschi
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University, New Haven, CT 06520, USA.
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Kishimoto H, Fukunaga M, Kushida K, Shiraki M, Itabashi A, Nawata H, Nakamura T, Ohta H, Takaoka K, Ohashi Y. Efficacy and tolerability of once-weekly administration of 17.5 mg risedronate in Japanese patients with involutional osteoporosis: a comparison with 2.5-mg once-daily dosage regimen. J Bone Miner Metab 2006; 24:405-13. [PMID: 16937274 DOI: 10.1007/s00774-006-0706-z] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2006] [Accepted: 05/16/2006] [Indexed: 10/24/2022]
Abstract
In this multicenter, randomized, double-blind controlled trial, the efficacy and safety of once-weekly dosing with 17.5 mg risedronate was compared with once-daily dosing with 2.5 mg risedronate in Japanese patients with involutional osteoporosis. A total of 496 patients were randomized to receive either once-weekly (n = 249) or once-daily (n = 247) treatment. All patients were supplemented with 200 mg/day calcium. Following 48 weeks of treatment, the mean (+/-SD) percent changes, from baseline, in the bone mineral density of the lumbar spine (L2-L4 BMD) in the once-weekly and once-daily treatment groups were 5.36 +/- 4.27% and 5.87 +/- 4.47%, respectively. The difference between the groups was -0.5% (95% confidence interval: -1.35% to 0.35%), demonstrating that the effect on BMD of once-weekly treatment was not inferior to that of once-daily treatment. The time-course reductions in biochemical markers of bone resorption (urinary N- and C-telopeptide of type I collagen) and bone formation (bone-specific alkaline phosphatase) were similar for the two dosing regimens. There were no differences in the incidence of new vertebral fractures or the worsening of existing fractures between the once-weekly (2.2%) and once-daily (2.7%) dosing regimens. No significant differences were observed between the two dosing regimens in the incidence or the type of adverse events. However, 10.1% of the patients in the once-daily group withdrew due to adverse events as compared to 5.2% in the once-weekly group. Moreover, drug-related adverse events, including upper gastrointestinal disorders and abnormal changes in laboratory parameters, tended to be less in the once-weekly dosing regimen than in the once-daily dosing regimen. In conclusion, once-weekly oral dosing with 17.5 mg risedronate was well tolerated in Japanese osteoporotic patients, and showed equivalent efficacy to once-daily oral dosing with 2.5 mg risedronate. This once-weekly regimen is expected to provide a more convenient therapeutic option as an alternative to daily dosing and to enhance patient compliance in long-term therapy for osteoporosis.
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Affiliation(s)
- Hideaki Kishimoto
- Department of Orthopedics, San-in Rosai Hospital, 1-8-1 Kaike-Shinden, Yonago, 683-0002, Japan.
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Abstract
Bone is a complex organ which contains an organic matrix which serves as scaffolding, includes mineral as calcium distributed in a pattern providing structure and serves as an ion reservoir for the body. Throughout life it dynamically changes in response to changes in activity, body mass, and weight bearing. It is important to define patients at risk for bone loss, since accrued bone loss leading to osteoporosis in the older population of both men and women is unacceptable. There are many different therapies including biphosphonates which can decrease loss of bone and decrease fracture risk in patients who already have had sustained a fracture. Newer therapies such as parathyroid hormone may improve the fracture risk even more than biphosphonates over a shorter period of time.
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Affiliation(s)
- Lee S Simon
- Harvard Medical School, Beth Isreal Deaconess Hospital, 330 Brookline Avenue, Boston, MA 02215, USA
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Taba M, Kinney J, Kim AS, Giannobile WV. Diagnostic biomarkers for oral and periodontal diseases. Dent Clin North Am 2005; 49:551-71, vi. [PMID: 15978241 PMCID: PMC2580776 DOI: 10.1016/j.cden.2005.03.009] [Citation(s) in RCA: 142] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This article provides an overview of periodontal disease diagnosis that uses clinical parameters and biomarkers of the disease process.This article discusses the use of biomarkers of disease that can be identified at the tissue, cellular, and molecular levels and that are measurable in oral fluids such as saliva and gingival crevicular fluid. Biomarkers identified from these biologic fluids include microbial, host response, and connective tissue-related molecules that can target specific pathways of local alveolar bone resorption. Future prospects for oral fluid-based diagnostics that use micro-array and microfluidic technologies are presented.
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Affiliation(s)
- Mario Taba
- Department of Periodontics/Prevention/Geriatrics, School of Dentistry, University of Michigan, 1011 North University Avenue, Ann Arbor, MI 48109-1078, USA
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Achemlal L, Tellal S, Rkiouak F, Nouijai A, Bezza A, Derouiche EM, Ghafir D, El Maghraoui A. Bone metabolism in male patients with type 2 diabetes. Clin Rheumatol 2005; 24:493-6. [PMID: 15747054 DOI: 10.1007/s10067-004-1070-9] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2004] [Accepted: 11/09/2004] [Indexed: 10/25/2022]
Abstract
Few reports are available on bone turnover in type 2 diabetes. Impaired bone turnover in type 2 diabetes appears to result from decreased bone formation. Studies also suggest that poor glycaemic control in type 2 diabetes may contribute to osteopaenia. The aim of this study was to investigate biochemical markers of bone turnover in males with poorly controlled type 2 diabetes and look for correlations with glycaemic control and gonadal and hypophyseal hormonal axis. Consecutive male patients with poorly controlled type 2 diabetes and attending the internal medicine department during a period of 6 months were enrolled. The patients were receiving oral hypoglycaemic agents (metformin or sulphonylureas or both). None of the patients had any evidence of macroangiopathy, nephropathy or neuropathy. Only two patients had proliferative retinopathy. Serum osteocalcin, crosslaps (C-telopeptide, CTx), parathyroid hormone (PTH), testosterone, oestrogen, prolactin, follicle-stimulating hormone (FSH) and luteinising hormone (LH) were measured in 35 patients and 35 controls. The mean age of the study population was 53.7 (10.3) years (range: 50.2-57.3) and the mean disease duration was 8.6 (6.0) years (range: 6.5-10.7). No differences between patients and controls were observed in serum calcium, phosphorus, creatinine, albumin, PTH, CTx, oestrogen, testosterone, LH, FSH, prolactin and urinary calcium. Patients had lower serum levels of osteocalcin than controls with a significant statistical difference [15.3 (4.1) vs 18.3 (5.3), p=0.012]. There was a negative significant statistical correlation between CTx levels and HbA1c (r=-0.41, p< 0.05). Our study suggested that bone formation is altered in type 2 diabetes and that bone turnover is affected by glycaemic control status.
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Affiliation(s)
- Lahsen Achemlal
- Rheumatology and Physical Rehabilitation Department, Military Hospital Mohammed V, Rabat, Morocco
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Shiga K, Hara H, Okano G, Ito M, Minami A, Tomita F. Ingestion of Difructose Anhydride III and Voluntary Running Exercise Independently Increase Femoral and Tibial Bone Mineral Density and Bone Strength with Increasing Calcium Absorption in Rats. J Nutr 2003; 133:4207-11. [PMID: 14652373 DOI: 10.1093/jn/133.12.4207] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Difructose anhydride III (DFAIII), a nondigestible disaccharide, promotes intestinal calcium absorption. Exercise-induced mechanical stimuli are essential for bone growth. In the present study, we examined the effects of consuming DFAIII and voluntary running exercise on calcium absorption and bone characteristics using male Sprague-Dawley rats (4 wk old). The study was designed in a 2 x 2 factorial arrangement with two conditions (sedentary or exercised) and two diets [AIN-93G diet with or without DFAIII (30 g/kg diet)]. Both consuming DFAIII and running exercise increased net calcium absorption, and the effects of DFAIII and exercise were additive. Both consuming DFAIII and exercise also increased femoral variables such as calcium content and total bone mineral density (BMD); however, only consuming DFAIII increased bone strength in the femur. Conversely, running exercise augmented tibial calcium content, total BMD and bone strength, but consuming DFAIII did not. We conclude that consuming DFAIII and running exercise additively enhance calcium absorption and differentially stimulate femoral and tibial BMD and mechanical properties in rats.
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Affiliation(s)
- Kazuki Shiga
- Northern Advancement Center for Science and Technology, Colabo-Hokkaido, Sapporo 001-0021, Japan
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Rudolphi K, Gerwin N, Verzijl N, van der Kraan P, van den Berg W. Pralnacasan, an inhibitor of interleukin-1beta converting enzyme, reduces joint damage in two murine models of osteoarthritis. Osteoarthritis Cartilage 2003; 11:738-46. [PMID: 13129693 DOI: 10.1016/s1063-4584(03)00153-5] [Citation(s) in RCA: 142] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To study the effect of pralnacasan, the orally bioavailable pro-drug of a potent, non-peptide inhibitor of interleukin-1beta converting enzyme (ICE), RU 36384/VRT-18858, on joint damage in two mouse models of knee osteoarthritis (OA). DESIGN In a collagenase-induced OA model, pralnacasan was given orally by gavage to female Balb/c mice at 0, 12.5, 25 and 50 mg/kg twice a day. In the second study, pralnacasan was tested in male STR/1N mice, which develop OA spontaneously, by administering food-drug mixtures ad libitum at concentrations of 0, 700 and 4200 ppm (mg/kg food). OA joint damage was assessed by a semi-quantitative histopathological score in both studies. In the STR/1N mouse study, urinary levels of collagen cross-links hydroxylysylpyridinoline (HP) and lysylpyridinoline (LP) were determined by high-pressure liquid chromatography at baseline, after 3 and 6 weeks of treatment and RU 36384/VRT-18858 plasma concentrations was measured after 6 weeks. RESULTS In both studies, the mice developed moderate to severe knee joint OA in the medial joint compartments (tibial plateau and femoral condyle), the non-treated control groups showing median histopathological scores from 18 to 21 of a maximal score of 32. Pralnacasan was well tolerated. At the doses of 12.5 and 50 mg/kg in collagenase-induced OA and at the high dose of 4200 ppm in STR/1N mice pralnacasan treatment significantly reduced OA by 13-22%. In the STR/1N mice, urinary levels of HP cross-links and the ratio of HP/LP, which are indicators of joint damage in OA, were significantly reduced in the high dose group by 59 and 84%, respectively. CONCLUSIONS The ICE inhibitor pralnacasan reduced joint damage in two experimental models of OA and has the potential to become a disease-modifying drug for the treatment of OA.
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Affiliation(s)
- K Rudolphi
- Aventis Pharma Germany Ltd, Disease Group Thrombotic Disease/Degenerative Joint Diseases, 65926 Frankfurt/Main, Germany.
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