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Frizzarini WS, Monteiro PLJ, Campolina JP, Vang AL, Soudah O, Lewandowski LR, Connelly MK, Arriola Apelo SI, Hernandez LL. Mechanisms by which feeding synthetic zeolite A and dietary cation-anion difference diets affect mineral metabolism in multiparous Holstein cows: Part I. J Dairy Sci 2024; 107:5204-5221. [PMID: 38490548 DOI: 10.3168/jds.2024-24056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 02/08/2024] [Indexed: 03/17/2024]
Abstract
The periparturient period is characterized by the increased demand for calcium (Ca) in dairy cows. This has resulted in the use of several different prepartal nutritional strategies to prevent hypocalcemia postpartum. The objective of our study was to determine the effects of feeding synthetic zeolite A (XZ), a diet with negative dietary cation-anion difference (-DCAD), or a positive-DCAD diet (CON) during the close-up period on peripartal mineral dynamics and hormones involved in calcium metabolism. To this end, 121 multiparous Holstein cows, blocked by lactation number and expected due date, were enrolled at 254 d of gestation and randomly assigned to 1 of 3 prepartum diets: CON (+190 mEq/kg; n = 40), -DCAD (-65 mEq/kg; n = 41), or a diet supplemented with sodium aluminum silicate (XZ; +278 mEq/kg, fed at 3.3% DM, targeting 500 g/d; n = 40; Protekta Inc.). Blood, urine, and saliva samples were collected from enrollment until parturition, with data analyzed and presented beginning 14 d before parturition (d -14) until parturition (d 0), and on d 1, 2, 3, 6, 9, 12, 15, 18, 21, 35, and 49 postpartum, to assess mineral and hormone dynamics. Total fecal collections were performed in a subset of 8 cows per treatment group to assess fecal mineral loss. Data were analyzed as a randomized complete block design in SAS. Cows fed XZ and -DCAD had higher blood Ca concentrations compared with CON-fed cows, with XZ-fed cows exhibiting the highest blood Ca concentrations pre- and postpartum. Cows fed XZ had decreased blood and salivary phosphorus (P), increased fecal water-extractable phosphate, and the highest blood calcium concentrations pre- and postpartum. Parathyroid hormone was unaffected by diet but was increased at parturition in all treatments. Serotonin concentrations were increased in -DCAD and XZ cows compared with CON during the prepartum period. Our data indicate that the XZ group's improvement in blood Ca concentrations pre- and postpartum is most likely regulated by a dietary P restriction. Taken together, these data suggest that XZ and -DCAD diets improve postpartum calcium metabolism; however, they appear to work through different mechanisms.
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Affiliation(s)
- W S Frizzarini
- Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706
| | - P L J Monteiro
- Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706
| | - J P Campolina
- Departmento de Zootecnia, Escola de Veterinaria, Universidade de Minas Gerais, Belo Horizonete, Minas Gerais, 30161-970, Brazil
| | - A L Vang
- Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706
| | - Olivia Soudah
- Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706
| | - L R Lewandowski
- Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706
| | - Meghan K Connelly
- Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706
| | - S I Arriola Apelo
- Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706
| | - L L Hernandez
- Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706.
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2
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Jiang S, Xie W, Knapstein PR, Donat A, Albertsen LC, Sevecke J, Erdmann C, Appelt J, Fuchs M, Hildebrandt A, Maleitzke T, Frosch KH, Baranowsky A, Keller J. Transcript-dependent effects of the CALCA gene on the progression of post-traumatic osteoarthritis in mice. Commun Biol 2024; 7:223. [PMID: 38396204 PMCID: PMC10891124 DOI: 10.1038/s42003-024-05889-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Osteoarthritis represents a chronic degenerative joint disease with exceptional clinical relevance. Polymorphisms of the CALCA gene, giving rise to either a procalcitonin/calcitonin (PCT/CT) or a calcitonin gene-related peptide alpha (αCGRP) transcript by alternative splicing, were reported to be associated with the development of osteoarthritis. The objective of this study was to investigate the role of both PCT/CT and αCGRP transcripts in a mouse model of post-traumatic osteoarthritis (ptOA). WT, αCGRP-/- and CALCA-/- mice were subjected to anterior cruciate ligament transection (ACLT) to induce ptOA of the knee. Mice were sacrificed 4 and 8 weeks post-surgery, followed by micro-CT and histological evaluation. Here we show that the expression of both PCT/CT and αCGRP transcripts is induced in ptOA knees. CALCA-/- mice show increased cartilage degeneration and subchondral bone loss with elevated osteoclast numbers compared to αCGRP-/- and WT mice. Osteophyte formation is reduced to the same extent in CALCA-/- and αCGRP-/- mice compared to WT controls, while a reduced synovitis score is noticed exclusively in mice lacking CALCA. Our data show that expression of the PCT/CT transcript protects from the progression of ptOA, while αCGRP promotes osteophyte formation, suggesting that CALCA-encoded peptides may represent novel targets for the treatment of ptOA.
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Affiliation(s)
- Shan Jiang
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Weixin Xie
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Paul Richard Knapstein
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Antonia Donat
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Lilly-Charlotte Albertsen
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jan Sevecke
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Cordula Erdmann
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jessika Appelt
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Melanie Fuchs
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Alexander Hildebrandt
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
| | - Tazio Maleitzke
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Clinician Scientist Program, Berlin, Germany
- Department of Orthopaedic Surgery, Copenhagen University Hospital - Amager and Hvidovre, Hvidovre, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Karl-Heinz Frosch
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Trauma Surgery, Orthopedics and Sports Traumatology, BG Hospital Hamburg, Hamburg, Germany
| | - Anke Baranowsky
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Johannes Keller
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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3
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Zhivodernikov IV, Kirichenko TV, Markina YV, Postnov AY, Markin AM. Molecular and Cellular Mechanisms of Osteoporosis. Int J Mol Sci 2023; 24:15772. [PMID: 37958752 PMCID: PMC10648156 DOI: 10.3390/ijms242115772] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023] Open
Abstract
Osteoporosis is a widespread systemic disease characterized by a decrease in bone mass and an imbalance of the microarchitecture of bone tissue. Experimental and clinical studies devoted to investigating the main pathogenetic mechanisms of osteoporosis revealed the important role of estrogen deficiency, inflammation, oxidative stress, cellular senescence, and epigenetic factors in the development of bone resorption due to osteoclastogenesis, and decreased mineralization of bone tissue and bone formation due to reduced function of osteoblasts caused by apoptosis and age-depended differentiation of osteoblast precursors into adipocytes. The current review was conducted to describe the basic mechanisms of the development of osteoporosis at molecular and cellular levels and to elucidate the most promising therapeutic strategies of pathogenetic therapy of osteoporosis based on articles cited in PubMed up to September 2023.
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Affiliation(s)
| | | | - Yuliya V. Markina
- Laboratory of Cellular and Molecular Pathology of Cardiovascular System, Petrovsky National Research Centre of Surgery, 119991 Moscow, Russia; (I.V.Z.); (T.V.K.); (A.Y.P.); (A.M.M.)
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4
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Wang Q, Qin H, Deng J, Xu H, Liu S, Weng J, Zeng H. Research Progress in Calcitonin Gene-Related Peptide and Bone Repair. Biomolecules 2023; 13:biom13050838. [PMID: 37238709 DOI: 10.3390/biom13050838] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 05/08/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Calcitonin gene-related peptide (CGRP) has 37 amino acids. Initially, CGRP had vasodilatory and nociceptive effects. As research progressed, evidence revealed that the peripheral nervous system is closely associated with bone metabolism, osteogenesis, and bone remodeling. Thus, CGRP is the bridge between the nervous system and the skeletal muscle system. CGRP can promote osteogenesis, inhibit bone resorption, promote vascular growth, and regulate the immune microenvironment. The G protein-coupled pathway is vital for its effects, while MAPK, Hippo, NF-κB, and other pathways have signal crosstalk, affecting cell proliferation and differentiation. The current review provides a detailed description of the bone repair effects of CGRP, subjected to several therapeutic studies, such as drug injection, gene editing, and novel bone repair materials.
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Affiliation(s)
- Qichang Wang
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- School of Clinical Medicine, Department of Medicine, Shenzhen University, Shenzhen 518061, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Shenzhen 518036, China
| | - Haotian Qin
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Jiapeng Deng
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Huihui Xu
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Su Liu
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Jian Weng
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Hui Zeng
- National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Shenzhen Key Laboratory of Orthopaedic Diseases and Biomaterials Research, Shenzhen 518036, China
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5
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Maleitzke T, Dietrich T, Hildebrandt A, Weber J, Appelt J, Jahn D, Otto E, Zocholl D, Jiang S, Baranowsky A, Duda GN, Tsitsilonis S, Keller J. Inactivation of the gene encoding procalcitonin prevents antibody-mediated arthritis. Inflamm Res 2023; 72:1069-1081. [PMID: 37039837 DOI: 10.1007/s00011-023-01719-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/25/2023] [Accepted: 03/09/2023] [Indexed: 04/12/2023] Open
Abstract
BACKGROUND Procalcitonin (PCT) is applied as a sensitive biomarker to exclude bacterial infections in patients with rheumatoid arthritis (RA) flare-ups. Beyond its diagnostic value, little is known about the pathophysiological role of PCT in RA. METHODS Collagen antibody-induced arthritis (CAIA) was induced in Calca-deficient mice (Calca-/-), lacking PCT (n = 15), and wild-type (WT) mice (n = 13), while control (CTRL) animals (n = 8 for each genotype) received phosphate-buffered saline. Arthritis severity and grip strength were assessed daily for 10 or 48 days. Articular inflammation, cartilage degradation, and bone lesions were assessed by histology, gene expression analysis, and µ-computed tomography. RESULTS Serum PCT levels and intra-articular PCT expression increased following CAIA induction. While WT animals developed a full arthritic phenotype, Calca-deficient mice were protected from clinical and histological signs of arthritis and grip strength was preserved. Cartilage turnover markers and Tnfa were exclusively elevated in WT mice. Calca-deficient animals expressed increased levels of Il1b. Decreased bone surface and increased subchondral bone porosity were observed in WT mice, while Calca-deficiency preserved bone integrity. CONCLUSION The inactivation of Calca and thereby PCT provided full protection from joint inflammation and arthritic bone loss in mice exposed to CAIA. Together with our previous findings on the pathophysiological function of Calca-derived peptides, these data indicate an independent pro-inflammatory role of PCT in RA.
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Affiliation(s)
- Tazio Maleitzke
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Clinician Scientist Program, Berlin, Germany
| | - Tamara Dietrich
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Alexander Hildebrandt
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Jérôme Weber
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Jessika Appelt
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Denise Jahn
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Ellen Otto
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Dario Zocholl
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Biometry and Clinical Epidemiology, Berlin, Germany
| | - Shan Jiang
- University Medical Center Hamburg-Eppendorf, Department of Trauma and Orthopedic Surgery, Hamburg, Germany
| | - Anke Baranowsky
- University Medical Center Hamburg-Eppendorf, Department of Trauma and Orthopedic Surgery, Hamburg, Germany
| | - Georg N Duda
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Serafeim Tsitsilonis
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Center for Musculoskeletal Surgery, Berlin, Germany
- Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Julius Wolff Institute, Berlin, Germany
| | - Johannes Keller
- University Medical Center Hamburg-Eppendorf, Department of Trauma and Orthopedic Surgery, Hamburg, Germany.
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6
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Baranowsky A, Jahn D, Jiang S, Yorgan T, Ludewig P, Appelt J, Albrecht KK, Otto E, Knapstein P, Donat A, Winneberger J, Rosenthal L, Köhli P, Erdmann C, Fuchs M, Frosch KH, Tsitsilonis S, Amling M, Schinke T, Keller J. Procalcitonin is expressed in osteoblasts and limits bone resorption through inhibition of macrophage migration during intermittent PTH treatment. Bone Res 2022; 10:9. [PMID: 35087025 PMCID: PMC8795393 DOI: 10.1038/s41413-021-00172-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 07/01/2021] [Accepted: 08/10/2021] [Indexed: 12/13/2022] Open
Abstract
Intermittent injections of parathyroid hormone (iPTH) are applied clinically to stimulate bone formation by osteoblasts, although continuous elevation of parathyroid hormone (PTH) primarily results in increased bone resorption. Here, we identified Calca, encoding the sepsis biomarker procalcitonin (ProCT), as a novel target gene of PTH in murine osteoblasts that inhibits osteoclast formation. During iPTH treatment, mice lacking ProCT develop increased bone resorption with excessive osteoclast formation in both the long bones and axial skeleton. Mechanistically, ProCT inhibits the expression of key mediators involved in the recruitment of macrophages, representing osteoclast precursors. Accordingly, ProCT arrests macrophage migration and causes inhibition of early but not late osteoclastogenesis. In conclusion, our results reveal a potential role of osteoblast-derived ProCT in the bone microenvironment that is required to limit bone resorption during iPTH.
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Affiliation(s)
- Anke Baranowsky
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany.,Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Denise Jahn
- Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany.,Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Shan Jiang
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Timur Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Peter Ludewig
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, 20251, Germany
| | - Jessika Appelt
- Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany.,Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Kai K Albrecht
- Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Ellen Otto
- Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany.,Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Paul Knapstein
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Antonia Donat
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Jack Winneberger
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, 20251, Germany
| | - Lana Rosenthal
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Paul Köhli
- Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany.,Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Cordula Erdmann
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Melanie Fuchs
- Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany.,Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Karl-Heinz Frosch
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Serafeim Tsitsilonis
- Center for Musculoskeletal Surgery, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany.,Julius Wolff Institute for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, 13353, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany
| | - Johannes Keller
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, 20246, Germany. .,Berlin Institute of Health, Berlin, 10178, Germany.
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Ishizuka K. Calcitonin Gene-related Peptide Inhibits Osteoclast Differentiation by Inducing the Negative Regulators <i>MafB</i> and <i>Bcl6</i>. J HARD TISSUE BIOL 2022. [DOI: 10.2485/jhtb.31.87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Kyoko Ishizuka
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University
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8
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Sawada I, Sato I, Kawata S, Nagahori K, Omotehara T, Yakura T, Li ZL, Itoh M. Characteristic expression of CGRP and osteogenic and vasculogenic markers in the proximal and distal regions of the rib during male mouse development. Ann Anat 2021; 240:151883. [PMID: 34915119 DOI: 10.1016/j.aanat.2021.151883] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 11/19/2021] [Accepted: 12/09/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Neuropeptide calcitonin gene-related peptide (CGRP) is a neurotransmitter related to vasculogenesis and osteogenesis during bone formation and organ development. From the foetal period to the postnatal period, the thorax, which is necessary for lung respiration, forms. The thorax exhibits the same cartilage ossification as the bones of the extremities, but a specific system within the thorax exists as costal cartilage after birth. The relationship among CGRP, osteogenesis and vasculogenic markers in the two rib locations during thorax formation is not fully understood. MATERIALS AND METHODS In our study, male mice were used to provide ribs under different development conditions on various embryonic days (E12. 5, E14.5, and E17.5) and postnatal days (P1 and P5). The mRNA expression levels of CGRP, vascular endothelial growth factor (VEGF-A), type 1 collagen (Col1a-1), type 2 collagen (Col2a1), neuropeptide Y (NPY), osteocalcin (OCN) and osteopontin (OPN) were analysed by qRT-PCR. We also analysed the mRNA expression of CGRP, VEGF-A and OPN by in situ hybridization. Multivariate modelling with principal component analysis (PCA) was performed to estimate the interactions among the quantitative real-time RT-PCR data. RESULTS The mRNA expression levels of CGRP, VEGF-A, Col2a, Col1a-1, OCN, and NPY in the male mouse rib gradually increased during development. An antisense probe for CGRP mRNA was strongly detected in the central region of the mouse rib at E12.5 and the hypertrophic and ossification zones at E17.5 by in situ hybridization. VEGF-A was also located in the same region as CGRP at E12.5 and E17.5. OPN was strongly detected at the rib formation stage from E14.5 to E17.5. The expression of CGRP also differed between the proximal and distal regions of the rib at E17.5. As demonstrated by in situ hybridization, CGRP continuously participates in cartilage formation in the distal regions of the rib after birth. The PCA revealed that the mRNA expression of CGRP was related to that of Col1a-1 and VEGF-A during rib formation. CONCLUSION This study shows that CGRP is involved in vascular and bone formation during rib development and may also be involved in cartilage formation after birth. The findings suggest that CGRP may temporarily participate in bone formation and continuously participate in cartilage formation in the rib, which may also be related to the formation of the anterior thoracic wall after birth.
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Affiliation(s)
- Iori Sawada
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Iwao Sato
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan.
| | - Shinichi Kawata
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Kenta Nagahori
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Takuya Omotehara
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Tomiko Yakura
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Zhong-Lian Li
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
| | - Masahiro Itoh
- Department of Anatomy, Tokyo Medical University, 6-1-1, Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
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9
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Mice Lacking the Calcitonin Receptor Do Not Display Improved Bone Healing. Cells 2021; 10:cells10092304. [PMID: 34571953 PMCID: PMC8471896 DOI: 10.3390/cells10092304] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 11/17/2022] Open
Abstract
Despite significant advances in surgical techniques, treatment options for impaired bone healing are still limited. Inadequate bone regeneration is not only associated with pain, prolonged immobilization and often multiple revision surgeries, but also with high socioeconomic costs, underlining the importance of a detailed understanding of the bone healing process. In this regard, we previously showed that mice lacking the calcitonin receptor (CTR) display increased bone formation mediated through the increased osteoclastic secretion of sphingosine-1-phosphate (S1P), an osteoanabolic molecule promoting osteoblast function. Although strong evidence is now available for the crucial role of osteoclast-to-osteoblast coupling in normal bone hemostasis, the relevance of this paracrine crosstalk during bone regeneration is unknown. Therefore, our study was designed to test whether increased osteoclast-to-osteoblast coupling, as observed in CTR-deficient mice, may positively affect bone repair. In a standardized femoral osteotomy model, global CTR-deficient mice displayed no alteration in radiologic callus parameters. Likewise, static histomorphometry demonstrated moderate impairment of callus microstructure and normal osseous bridging of osteotomy ends. In conclusion, bone regeneration is not accelerated in CTR-deficient mice, and contrary to its osteoanabolic action in normal bone turnover, osteoclast-to-osteoblast coupling specifically involving the CTR-S1P axis, may only be of minor relevance during bone healing.
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Baranowsky A, Appelt J, Kleber C, Lange T, Ludewig P, Jahn D, Pandey P, Keller D, Rose T, Schetler D, Braumüller S, Huber-Lang M, Tsitsilonis S, Yorgan T, Frosch KH, Amling M, Schinke T, Keller J. Procalcitonin Exerts a Mediator Role in Septic Shock Through the Calcitonin Gene-Related Peptide Receptor. Crit Care Med 2021; 49:e41-e52. [PMID: 33196529 DOI: 10.1097/ccm.0000000000004731] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES Clinically, procalcitonin represents the most widely used biomarker of sepsis worldwide with unclear pathophysiologic significance to date. Pharmacologically, procalcitonin was shown to signal through both calcitonin receptor and calcitonin gene-related peptide receptor in vitro, yet the identity of its biologically relevant receptor remains unknown. DESIGN Prospective randomized animal investigations and in vitro human blood studies. SETTING Research laboratory of a university hospital. SUBJECTS C57BL/6J mice and patients with post-traumatic sepsis. INTERVENTIONS Procalcitonin-deficient mice were used to decipher a potential mediator role in experimental septic shock and identify the relevant receptor for procalcitonin. Cecal ligation and puncture and endotoxemia models were employed to investigate septic shock. Disease progression was evaluated through survival analysis, histology, proteome profiling, gene expression, and flow cytometry. Mechanistic studies were performed with cultured macrophages, dendritic cells, and gamma delta T cells. Main findings were confirmed in serum samples of patients with post-traumatic sepsis. MEASUREMENTS AND MAIN RESULTS Procalcitonin-deficient mice are protected from septic shock and show decreased pulmonary inflammation. Mechanistically, procalcitonin potentiates proinflammatory cytokine expression in innate immune cells, required for interleukin-17A expression in gamma delta T cells. In patients with post-traumatic sepsis, procalcitonin positively correlates with systemic interleukin-17A levels. In mice with endotoxemia, immunoneutralization of interleukin-17A inhibits the deleterious effect of procalcitonin on disease outcome. Although calcitonin receptor expression is irrelevant for disease progression, the nonpeptide calcitonin gene-related peptide receptor antagonist olcegepant, a prototype of currently introduced antimigraine drugs, inhibits procalcitonin signaling and increases survival time in septic shock. CONCLUSIONS Our experimental data suggest that procalcitonin exerts a moderate but harmful effect on disease progression in experimental septic shock. In addition, the study points towards the calcitonin gene-related peptide receptor as relevant for procalcitonin signaling and suggests a potential therapeutic application for calcitonin gene-related peptide receptor inhibitors in sepsis, which warrants further clinical investigation.
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Affiliation(s)
- Anke Baranowsky
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jessika Appelt
- Julius Wolff Institut for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Christian Kleber
- University Center of Orthopaedics and Traumatology, University Hospital Dresden, Dresden, Germany
| | - Tobias Lange
- Institute of Anatomy and Experimental Morphology, University Cancer Center Hamburg, Hamburg, Germany
| | - Peter Ludewig
- Department of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Denise Jahn
- Julius Wolff Institut for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Puja Pandey
- Julius Wolff Institut for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Daniela Keller
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thomas Rose
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Daniela Schetler
- Institute of Anatomy and Experimental Morphology, University Cancer Center Hamburg, Hamburg, Germany
| | - Sonja Braumüller
- Department of Traumatology, Center of Surgery, University of Ulm, Ulm, Germany
| | - Markus Huber-Lang
- Department of Traumatology, Center of Surgery, University of Ulm, Ulm, Germany
| | - Serafeim Tsitsilonis
- Julius Wolff Institut for Biomechanics and Musculoskeletal Regeneration, Charité-Universitätsmedizin Berlin, Berlin, Germany
- Center for Musculoskeletal Surgery, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Timur Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Karl-Heinz Frosch
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Johannes Keller
- Department of Trauma and Orthopedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Berlin Institute of Health (BIH), Berlin, Germany
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11
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Sex and the serotonergic underpinnings of depression and migraine. HANDBOOK OF CLINICAL NEUROLOGY 2020; 175:117-140. [PMID: 33008520 DOI: 10.1016/b978-0-444-64123-6.00009-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Most psychiatric disorders demonstrate sex differences in their prevalence and symptomatology, and in their response to treatment. These differences are particularly pronounced in mood disorders. Differences in sex hormone levels are among the most overt distinctions between males and females and are thus an intuitive underpinning for these clinical observations. In fact, treatment with estrogen and testosterone was shown to exert antidepressant effects, which underscores this link. Changes to monoaminergic signaling in general, and serotonergic transmission in particular, are understood as central components of depressive pathophysiology. Thus, modulation of the serotonin system may serve as a mechanism via which sex hormones exert their clinical effects in mental health disorders. Over the past 20 years, various experimental approaches have been applied to identify modes of influence of sex and sex hormones on the serotonin system. This chapter provides an overview of different molecular components of the serotonin system, followed by a review of studies performed in animals and in humans with the purpose of elucidating sex hormone effects. Particular emphasis will be placed on studies performed with positron emission tomography, a method that allows for human in vivo molecular imaging and, therefore, assessment of effects in a clinically representative context. The studies addressed in this chapter provide a wealth of information on the interaction between sex, sex hormones, and serotonin in the brain. In general, they offer evidence for the concept that the influence of sex hormones on various components of the serotonin system may serve as an underpinning for the clinical effects these hormones demonstrate.
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12
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Köhler OM, Grünberg W, Schnepel N, Muscher-Banse AS, Rajaeerad A, Hummel J, Breves G, Wilkens MR. Dietary phosphorus restriction affects bone metabolism, vitamin D metabolism and rumen fermentation traits in sheep. J Anim Physiol Anim Nutr (Berl) 2020; 105:35-50. [PMID: 33001513 DOI: 10.1111/jpn.13449] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 07/04/2020] [Accepted: 08/24/2020] [Indexed: 12/12/2022]
Abstract
Homeostasis of calcium (Ca) and phosphate (Pi ) is maintained by a concerted interplay of absorption and reabsorption via the gastrointestinal tract and the kidney and by storage and mobilization from the bone regulated mainly by parathyroid hormone (PTH), 1,25-dihydroxycholecalciferol and calcitonin. The present study aimed at characterizing the effects of dietary P restriction on bone, vitamin D metabolism and rumen fermentation traits reflecting the endogenous P cycle maintaining the ruminal P supply for microbial metabolism. The experiments were done in eleven female, non-pregnant, non-lactating four- to nine-year-old Black Headed Mutton sheep allotted to two feeding groups: "P-restricted" (0.11% P/kg DM and 0.88% Ca/kg DM) and "Control" (0.38% P/kg DM and 0.88% Ca/kg DM). Dietary P restriction did not lead to hypophosphataemia, probably due to a compensation by bone mobilization, demonstrated by increased serum concentrations of a resorption marker and altered gene expression in bone tissue. In addition, the RNA expression of fibroblast growth factor 23, a bone-derived factor involved in the regulation of vitamin D metabolism, was significantly reduced with dietary P restriction. Furthermore, several genes related to vitamin D metabolism and plasma concentrations of 1,25-(OH)2 D were associated with serum concentrations of phosphate (Pi ). In the parotid gland, the expression of the Pi transporter NaPi2b was negatively associated with serum Pi and positively with parathyroid PTH expression. Although Pi concentrations in saliva and the gastrointestinal tract were significantly reduced, we found no adverse effects of the P-restricted ration on the production of short chain fatty acids, but slight differences in the production of butyrate as well as its relationship to rumen Pi and ammonia concentrations that might indicate an impact on ruminal fermentation.
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Affiliation(s)
- Oriana M Köhler
- Department of Animal Sciences, Faculty of Agricultural Sciences, University of Goettingen, Goettingen, Germany
| | - Walter Grünberg
- Clinic for Cattle, University of Veterinary Medicine Hannover, Foundation, Hanover, Germany
| | - Nadine Schnepel
- Institute of Physiology and Cell Biology, University of Veterinary Medicine Hannover, Foundation, Hanover, Germany
| | - Alexandra S Muscher-Banse
- Institute of Physiology and Cell Biology, University of Veterinary Medicine Hannover, Foundation, Hanover, Germany
| | - Abbas Rajaeerad
- Department of Animal Sciences, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
| | - Jürgen Hummel
- Department of Animal Sciences, Faculty of Agricultural Sciences, University of Goettingen, Goettingen, Germany
| | - Gerhard Breves
- Institute of Physiology and Cell Biology, University of Veterinary Medicine Hannover, Foundation, Hanover, Germany
| | - Mirja R Wilkens
- Department of Animal Sciences, Faculty of Agricultural Sciences, University of Goettingen, Goettingen, Germany.,Institute of Physiology and Cell Biology, University of Veterinary Medicine Hannover, Foundation, Hanover, Germany
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13
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Wilkens MR, Nelson CD, Hernandez LL, McArt JA. Symposium review: Transition cow calcium homeostasis—Health effects of hypocalcemia and strategies for prevention. J Dairy Sci 2020; 103:2909-2927. [DOI: 10.3168/jds.2019-17268] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 11/18/2019] [Indexed: 12/14/2022]
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14
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Hsiao CY, Chen TH, Chu TH, Ting YN, Tsai PJ, Shyu JF. Calcitonin Induces Bone Formation by Increasing Expression of Wnt10b in Osteoclasts in Ovariectomy-Induced Osteoporotic Rats. Front Endocrinol (Lausanne) 2020; 11:613. [PMID: 33013696 PMCID: PMC7506163 DOI: 10.3389/fendo.2020.00613] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 07/27/2020] [Indexed: 11/13/2022] Open
Abstract
Calcitonin is a small peptide hormone secreted from the parafollicular cells of the thyroid gland in response to an increase in serum calcium. The inhibition of osteoclastic resorption is the main mechanism by which calcitonin quickly decreases circulating calcium levels. Although calcitonin pharmacologically acts on osteoclasts to prevent bone resorption, the results of studies on genetically modified animals have shown that the physiological effect of calcitonin is in the inhibition of osteoblastic bone formation. Because the calcitonin receptor is only expressed in osteoclasts, the effect of calcitonin on osteoblasts maybe indirect and mediated via osteoclasts. Wnt ligands are involved in various aspects of skeletal biology, including bone remodeling and endochondral bone formation. Wnt10b has recently been recognized as a clastokine, and is potentially a therapeutic target for treating bone disorders. However, the extent to which Wnt signaling is involved in bone physiology and disease is not yet fully understood. We hypothesize that calcitonin indirectly increases osteoblastic bone formation by inducing Wnt10b expression in osteoclasts. Micro-CT analysis revealed reduced bone loss in calcitonin-treated ovariectomized rats. The serum of animals treated with calcitonin had decreased TRAP5b and CTX-1 but increased osteocalcin, P1NP, and Wnt10b. Immunohistochemistry staining showed that the level of Wnt10b in the femur was increased in calcitonin-treated groups as compared with control groups. Hematopoietic mononuclear cells were separated from rat femur and tibia bone marrow, and were induced into osteoclasts following treatment with M-CSF and RANKL. In these cells, immunoconfocal microscopy and Western blot analysis showed that calcitonin induced an increase in Wnt10b expression. In a culture of osteoblasts isolated from neonatal rat calvariae, the calcitonin-treated osteoclast supernatant showed an increase in mineralization, as indicated by ALP and alizarin red staining. Taken together, these results indicate that calcitonin induces bone formation by increasing the expression of Wnt10b in osteoclasts in ovariectomy-induced osteoporotic rats. The present study provides in-depth information about the effects of calcitonin on bone remodeling and will thus help in the development of future potential therapeutic strategies for postmenopausal osteoporosis.
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Affiliation(s)
- Chen-Yuan Hsiao
- National Defense Medical Center, Graduate Institute of Medical Sciences, Taipei, Taiwan
- Department of Surgery, Landseed International Hospital, Taoyuan, Taiwan
| | - Tien-Hua Chen
- School of Medicine, Institute of Anatomy and Cell Biology, National Yang Ming University, Taipei, Taiwan
- Department of Surgery, Trauma Center, Veterans General Hospital, Taipei, Taiwan
- Division of General Surgery, Department of Surgery, Veterans General Hospital, Taipei, Taiwan
| | - Tzu-Hui Chu
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Yen-Nien Ting
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
| | - Pei-Jiun Tsai
- School of Medicine, Institute of Anatomy and Cell Biology, National Yang Ming University, Taipei, Taiwan
- Department of Surgery, Trauma Center, Veterans General Hospital, Taipei, Taiwan
- Department of Critical Care Medicine, Veterans General Hospital, Taipei, Taiwan
- *Correspondence: Pei-Jiun Tsai
| | - Jia-Fwu Shyu
- Department of Biology and Anatomy, National Defense Medical Center, Taipei, Taiwan
- Department of Psychiatry, National Defense Medical Center, Tri-Service General Hospital, Taipei, Taiwan
- Jia-Fwu Shyu
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15
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Xie J, Guo J, Kanwal Z, Wu M, Lv X, Ibrahim NA, Li P, Buabeid MA, Arafa ESA, Sun Q. Calcitonin and Bone Physiology: In Vitro, In Vivo, and Clinical Investigations. Int J Endocrinol 2020; 2020:3236828. [PMID: 32963524 PMCID: PMC7501564 DOI: 10.1155/2020/3236828] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/18/2020] [Accepted: 08/27/2020] [Indexed: 12/15/2022] Open
Abstract
Calcitonin was discovered as a peptide hormone that was known to reduce the calcium levels in the systemic circulation. This hypocalcemic effect is produced due to multiple reasons such as inhibition of bone resorption or suppression of calcium release from the bone. Thus, calcitonin was said as a primary regulator of the bone resorption process. This is the reason why calcitonin has been used widely in clinics for the treatment of bone disorders such as osteoporosis, hypercalcemia, and Paget's disease. However, presently calcitonin usage is declined due to the development of efficacious formulations of new drugs. Calcitonin gene-related peptides and several other peptides such as intermedin, amylin, and adrenomedullin (ADM) are categorized in calcitonin family. These peptides are known for the structural similarity with calcitonin. Aside from having a similar structure, these peptides have few overlapping biological activities and signal transduction action through related receptors. However, several other activities are also present that are peptide specific. In vitro and in vivo studies documented the posttreatment effects of calcitonin peptides, i.e., positive effect on bone osteoblasts and their formation and negative effect on osteoclasts and their resorption. The recent research studies carried out on genetically modified mice showed the inhibition of osteoclast activity by amylin, while astonishingly calcitonin plays its role by suppressing osteoblast and bone turnover. This article describes the review of the bone, the activity of the calcitonin family of peptides, and the link between them.
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Affiliation(s)
- Jingbo Xie
- Department of Orthopedics, Fengcheng People's Hospital, Fengcheng, Jiangxi 331100, China
| | - Jian Guo
- Department of the Second Orthopedics, Hongdu Hospital of Traditional Chinese Medicine Affiliated to Jiangxi University of Traditional Chinese Medicine, Nanchang Hongdu Traditional Chinese Medicine Hospital, Nanchang, Jiangxi 330008, China
| | | | - Mingzheng Wu
- Department of Orthopaedics, Pu'ai Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430000, China
| | - Xiangyang Lv
- Department of Orthopaedics, Xi'an International Medical Center Hospital, Xi'an, Shaanxi 710100, China
| | | | - Ping Li
- Department of Orthopaedics, Ya'an People's Hospital, Ya'an, Sichuan 625000, China
| | | | | | - Qingshan Sun
- Department of Orthopedics, The Third Hospital of Shandong Province, Jinan, Shandong 250031, China
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Heckt T, Brylka LJ, Neven M, Amling M, Schinke T. Deficiency of sphingosine-1-phosphate receptor 3 does not affect the skeletal phenotype of mice lacking sphingosine-1-phosphate lyase. PLoS One 2019; 14:e0219734. [PMID: 31314788 PMCID: PMC6636735 DOI: 10.1371/journal.pone.0219734] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/01/2019] [Indexed: 01/17/2023] Open
Abstract
Albeit osteoporosis is one of the most prevalent disorders in the aged population, treatment options stimulating the activity of bone-forming osteoblasts are still limited. We and others have previously identified sphingosine-1-phosphate (S1P) as a bone remodeling coupling factor, which is released by bone-resorbing osteoclasts to stimulate bone formation. Moreover, S1pr3, encoding one of the five known S1P receptors (S1P3), was found differentially expressed in osteoblasts, and S1P3 deficiency corrected the moderate high bone mass phenotype of a mouse model (deficient for the calcitonin receptor) with increased S1P release from osteoclasts. In the present study we addressed the question, if S1P3 deficiency would also influence the skeletal phenotype of mice lacking S1P-lyase (encoded by Sgpl1), which display markedly increased S1P levels due to insufficient degradation. Consistent with previous reports, the majority of Sgpl1-deficient mice died before or shortly after weaning, and this lethality was not influenced by additional S1P3 deficiency. At 3 weeks of age, Sgpl1-deficient mice displayed increased trabecular bone mass, which was associated with enhanced osteoclastogenesis and bone resorption, but also with increased bone formation. Most importantly however, none of the skeletal parameters assessed by μCT, histomorphometry and serum analyses were significantly influenced by additional S1P3 deficiency. Taken together, our findings fully support the concept that S1P is a potent osteoanabolic molecule, although S1P3 is not the sole receptor mediating this influence. Since S1P receptors are considered excellent drug targets, it is now required to screen for the impact of other family members on bone formation.
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Affiliation(s)
- Timo Heckt
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Laura J. Brylka
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Mona Neven
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg, Germany
- * E-mail:
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17
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Lerner UH, Kindstedt E, Lundberg P. The critical interplay between bone resorbing and bone forming cells. J Clin Periodontol 2019; 46 Suppl 21:33-51. [DOI: 10.1111/jcpe.13051] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 11/05/2018] [Accepted: 12/01/2018] [Indexed: 12/21/2022]
Affiliation(s)
- Ulf H. Lerner
- Centre for Bone and Arthritis Research at Department of Internal Medicine and Clinical Nutrition; Institute of Medicine; Sahlgrenska Academy; University of Gothenburg; Gothenburg Sweden
- Department of Odontology; Division of Molecular Periodontology; Umeå University; Umeå Sweden
| | - Elin Kindstedt
- Department of Odontology; Division of Molecular Periodontology; Umeå University; Umeå Sweden
| | - Pernilla Lundberg
- Department of Odontology; Division of Molecular Periodontology; Umeå University; Umeå Sweden
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Naot D, Musson DS, Cornish J. The Activity of Peptides of the Calcitonin Family in Bone. Physiol Rev 2019; 99:781-805. [PMID: 30540227 DOI: 10.1152/physrev.00066.2017] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Calcitonin was discovered over 50 yr ago as a new hormone that rapidly lowers circulating calcium levels. This effect is caused by the inhibition of calcium efflux from bone, as calcitonin is a potent inhibitor of bone resorption. Calcitonin has been in clinical use for conditions of accelerated bone turnover, including Paget's disease and osteoporosis; although in recent years, with the development of drugs that are more potent inhibitors of bone resorption, its use has declined. A number of peptides that are structurally similar to calcitonin form the calcitonin family, which currently includes calcitonin gene-related peptides (αCGRP and βCGRP), amylin, adrenomedullin, and intermedin. Apart from being structurally similar, the peptides signal through related receptors and have some overlapping biological activities, although other activities are peptide specific. In bone, in vitro studies and administration of the peptides to animals generally found inhibitory effects on osteoclasts and bone resorption and positive effects on osteoblasts and bone formation. Surprisingly, studies in genetically modified mice have demonstrated that the physiological role of calcitonin appears to be the inhibition of osteoblast activity and bone turnover, whereas amylin inhibits osteoclast activity. The review article focuses on the activities of peptides of the calcitonin family in bone and the challenges in understanding the relationship between the pharmacological effects and the physiological roles of these peptides.
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Affiliation(s)
- Dorit Naot
- Department of Medicine, University of Auckland , Auckland , New Zealand
| | - David S Musson
- Department of Medicine, University of Auckland , Auckland , New Zealand
| | - Jillian Cornish
- Department of Medicine, University of Auckland , Auckland , New Zealand
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19
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Hendrickx G, Borra VM, Steenackers E, Yorgan TA, Hermans C, Boudin E, Waterval JJ, Jansen IDC, Aydemir TB, Kamerling N, Behets GJ, Plumeyer C, D’Haese PC, Busse B, Everts V, Lammens M, Mortier G, Cousins RJ, Schinke T, Stokroos RJ, Manni JJ, Van Hul W. Conditional mouse models support the role of SLC39A14 (ZIP14) in Hyperostosis Cranialis Interna and in bone homeostasis. PLoS Genet 2018; 14:e1007321. [PMID: 29621230 PMCID: PMC5903675 DOI: 10.1371/journal.pgen.1007321] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 04/17/2018] [Accepted: 03/19/2018] [Indexed: 01/19/2023] Open
Abstract
Hyperostosis Cranialis Interna (HCI) is a rare bone disorder characterized by progressive intracranial bone overgrowth at the skull. Here we identified by whole-exome sequencing a dominant mutation (L441R) in SLC39A14 (ZIP14). We show that L441R ZIP14 is no longer trafficked towards the plasma membrane and excessively accumulates intracellular zinc, resulting in hyper-activation of cAMP-CREB and NFAT signaling. Conditional knock-in mice overexpressing L438R Zip14 in osteoblasts have a severe skeletal phenotype marked by a drastic increase in cortical thickness due to an enhanced endosteal bone formation, resembling the underlying pathology in HCI patients. Remarkably, L438R Zip14 also generates an osteoporotic trabecular bone phenotype. The effects of osteoblastic overexpression of L438R Zip14 therefore mimic the disparate actions of estrogen on cortical and trabecular bone through osteoblasts. Collectively, we reveal ZIP14 as a novel regulator of bone homeostasis, and that manipulating ZIP14 might be a therapeutic strategy for bone diseases.
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Affiliation(s)
- Gretl Hendrickx
- Center of Medical Genetics, University and University Hospital of Antwerp, Antwerp, Belgium
| | - Vere M. Borra
- Center of Medical Genetics, University and University Hospital of Antwerp, Antwerp, Belgium
| | - Ellen Steenackers
- Center of Medical Genetics, University and University Hospital of Antwerp, Antwerp, Belgium
| | - Timur A. Yorgan
- Department of Osteology and Biomechanics (IOBM), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christophe Hermans
- Center for Oncological Research Antwerp (CORE), University of Antwerp, Antwerp, Belgium
| | - Eveline Boudin
- Center of Medical Genetics, University and University Hospital of Antwerp, Antwerp, Belgium
| | - Jérôme J. Waterval
- Department of Otorhinolaryngology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ineke D. C. Jansen
- Department of Periodontology and Oral Cell Biology, Academic Center of Dentistry Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Tolunay Beker Aydemir
- Food Science and Human Nutrition Department and Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, United States of America
| | - Niels Kamerling
- Department of Neurosurgery, University Hospital Antwerp, Antwerp, Belgium
| | - Geert J. Behets
- Department of Pathophysiology, University of Antwerp, Antwerp, Belgium
| | - Christine Plumeyer
- Department of Osteology and Biomechanics (IOBM), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Björn Busse
- Department of Osteology and Biomechanics (IOBM), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Vincent Everts
- Department of Periodontology and Oral Cell Biology, Academic Center of Dentistry Amsterdam and VU University Amsterdam, Amsterdam, The Netherlands
| | - Martin Lammens
- Department of Pathological Anatomy, University Hospital Antwerp, Antwerp, Belgium
| | - Geert Mortier
- Center of Medical Genetics, University and University Hospital of Antwerp, Antwerp, Belgium
| | - Robert J. Cousins
- Food Science and Human Nutrition Department and Center for Nutritional Sciences, College of Agricultural and Life Sciences, University of Florida, Gainesville, FL, United States of America
| | - Thorsten Schinke
- Department of Osteology and Biomechanics (IOBM), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Robert J. Stokroos
- Department of Otorhinolaryngology and Head & Neck Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Johannes J. Manni
- Department of Otorhinolaryngology and Head & Neck Surgery, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Wim Van Hul
- Center of Medical Genetics, University and University Hospital of Antwerp, Antwerp, Belgium
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Boudin E, Yorgan T, Fijalkowski I, Sonntag S, Steenackers E, Hendrickx G, Peeters S, De Maré A, Vervaet B, Verhulst A, Mortier G, D'Haese P, Schinke T, Van Hul W. The Lrp4R1170Q Homozygous Knock-In Mouse Recapitulates the Bone Phenotype of Sclerosteosis in Humans. J Bone Miner Res 2017; 32:1739-1749. [PMID: 28477420 DOI: 10.1002/jbmr.3160] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 04/13/2017] [Accepted: 04/22/2017] [Indexed: 01/08/2023]
Abstract
Sclerosteosis is a rare autosomal recessive bone disorder marked by hyperostosis of the skull and tubular bones. Initially, we and others reported that sclerosteosis was caused by loss-of-function mutations in SOST, encoding sclerostin. More recently, we identified disease-causing mutations in LRP4, a binding partner of sclerostin, in three sclerosteosis patients. Upon binding to sclerostin, LRP4 can inhibit the canonical WNT signaling that is known to be an important pathway in the regulation of bone formation. To further investigate the role of LRP4 in the bone formation process, we generated an Lrp4 mutated sclerosteosis mouse model by introducing the p.Arg1170Gln mutation in the mouse genome. Extensive analysis of the bone phenotype of the Lrp4R1170Q/R1170Q knock-in (KI) mouse showed the presence of increased trabecular and cortical bone mass as a consequence of increased bone formation by the osteoblasts. In addition, three-point bending analysis also showed that the increased bone mass results in increased bone strength. In contrast to the human sclerosteosis phenotype, we could not observe syndactyly in the forelimbs or hindlimbs of the Lrp4 KI animals. Finally, we could not detect any significant changes in the bone formation and resorption markers in the serum of the mutant mice. However, the serum sclerostin levels were strongly increased and the level of sclerostin in the tibia was decreased in Lrp4R1170Q/R1170Q mice, confirming the role of LRP4 as an anchor for sclerostin in bone. In conclusion, the Lrp4R1170Q/R1170Q mouse is a good model for the human sclerosteosis phenotype caused by mutations in LRP4 and can be used in the future for further investigation of the mechanism whereby LRP4 regulates bone formation. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Eveline Boudin
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
| | - Timur Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Igor Fijalkowski
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
| | | | - Ellen Steenackers
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
| | - Gretl Hendrickx
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
| | - Silke Peeters
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
| | - Annelies De Maré
- Laboratory of Pathophysiology, Department Biomedical Sciences, University of Antwerp, Wilrijk, Belgium
| | - Benjamin Vervaet
- Laboratory of Pathophysiology, Department Biomedical Sciences, University of Antwerp, Wilrijk, Belgium
| | - Anja Verhulst
- Laboratory of Pathophysiology, Department Biomedical Sciences, University of Antwerp, Wilrijk, Belgium
| | - Geert Mortier
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
| | - Patrick D'Haese
- Laboratory of Pathophysiology, Department Biomedical Sciences, University of Antwerp, Wilrijk, Belgium
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Wim Van Hul
- Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
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Bartelt A, Jeschke A, Müller B, Gaziano I, Morales M, Yorgan T, Heckt T, Heine M, Gagel RF, Emeson RB, Amling M, Niemeier A, Heeren J, Schinke T, Keller J. Differential effects of Calca-derived peptides in male mice with diet-induced obesity. PLoS One 2017; 12:e0180547. [PMID: 28666011 PMCID: PMC5493411 DOI: 10.1371/journal.pone.0180547] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 06/16/2017] [Indexed: 12/20/2022] Open
Abstract
Key metabolic hormones, such as insulin, leptin, and adiponectin, have been studied extensively in obesity, however the pathophysiologic relevance of the calcitonin family of peptides remains unclear. This family includes calcitonin (CT), its precursor procalcitonin (PCT), and alpha calcitonin-gene related peptide (αCGRP), which are all encoded by the gene Calca. Here, we studied the role of Calca-derived peptides in diet-induced obesity (DIO) by challenging Calcr-/- (encoding the calcitonin receptor, CTR), Calca-/-, and αCGRP-/- mice and their respective littermates with high-fat diet (HFD) feeding for 16 weeks. HFD-induced pathologies were assessed by glucose tolerance, plasma cytokine and lipid markers, expression studies and histology. We found that DIO in mice lacking the CTR resulted in impaired glucose tolerance, features of enhanced nonalcoholic steatohepatitis (NASH) and adipose tissue inflammation compared to wildtype littermates. Furthermore, CTR-deficient mice were characterized by dyslipidemia and elevated HDL levels. In contrast, mice lacking Calca were protected from DIO, NASH and adipose tissue inflammation, and displayed improved glucose tolerance. Mice exclusively lacking αCGRP displayed a significantly less improved DIO phenotype compared to Calca-deficient mice. In summary, we demonstrate that the CT/CTR axis is involved in regulating plasma cholesterol levels while Calca, presumably through PCT, seems to have a detrimental effect in the context of metabolic disease. Our study provides the first comparative analyses of the roles of Calca-derived peptides and the CTR in metabolic disease.
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Affiliation(s)
- Alexander Bartelt
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anke Jeschke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Brigitte Müller
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Isabella Gaziano
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Michelle Morales
- Department of Internal Medicine, Scripps Mercy Hospital, San Diego, California, United States of America
| | - Timur Yorgan
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Timo Heckt
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Heine
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Robert F. Gagel
- Endocrine Neoplasia and Hormonal Disorders, University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
| | - Ronald B. Emeson
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Andreas Niemeier
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jörg Heeren
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Johannes Keller
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Faour O, Gilloteaux J. Calcitonin: Survey of new anatomy data to pathology and therapeutic aspects. TRANSLATIONAL RESEARCH IN ANATOMY 2017. [DOI: 10.1016/j.tria.2017.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Kamgar-Parsi K, Tolchard J, Habenstein B, Loquet A, Naito A, Ramamoorthy A. Structural Biology of Calcitonin: From Aqueous Therapeutic Properties to Amyloid Aggregation. Isr J Chem 2016. [DOI: 10.1002/ijch.201600096] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kian Kamgar-Parsi
- Applied Physics Program; University of Michigan; Ann Arbor MI 48109-1040 USA
| | - James Tolchard
- Institute of Chemistry and Biology of Membranes and Nanoobjects, CNRS, CBMN, UMR 5248; University of Bordeaux; 33600 Pessac France
| | - Birgit Habenstein
- Institute of Chemistry and Biology of Membranes and Nanoobjects, CNRS, CBMN, UMR 5248; University of Bordeaux; 33600 Pessac France
| | - Antoine Loquet
- Institute of Chemistry and Biology of Membranes and Nanoobjects, CNRS, CBMN, UMR 5248; University of Bordeaux; 33600 Pessac France
| | - Akira Naito
- Graduate School of Engineering; Yokohama National University; 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan
| | - Ayyalusamy Ramamoorthy
- Department of Chemistry and Biophysics Program; University of Michigan; 930 North University Avenue Ann Arbor MI 48109-1055 USA
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25
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Novack DV, Mbalaviele G. Osteoclasts-Key Players in Skeletal Health and Disease. Microbiol Spectr 2016; 4:10.1128/microbiolspec.MCHD-0011-2015. [PMID: 27337470 PMCID: PMC4920143 DOI: 10.1128/microbiolspec.mchd-0011-2015] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Indexed: 12/12/2022] Open
Abstract
The differentiation of osteoclasts (OCs) from early myeloid progenitors is a tightly regulated process that is modulated by a variety of mediators present in the bone microenvironment. Once generated, the function of mature OCs depends on cytoskeletal features controlled by an αvβ3-containing complex at the bone-apposed membrane and the secretion of protons and acid-protease cathepsin K. OCs also have important interactions with other cells in the bone microenvironment, including osteoblasts and immune cells. Dysregulation of OC differentiation and/or function can cause bone pathology. In fact, many components of OC differentiation and activation have been targeted therapeutically with great success. However, questions remain about the identity and plasticity of OC precursors and the interplay between essential networks that control OC fate. In this review, we summarize the key principles of OC biology and highlight recently uncovered mechanisms regulating OC development and function in homeostatic and disease states.
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Affiliation(s)
- Deborah Veis Novack
- Musculoskeletal Research Center, Division of Bone and Mineral Diseases, Department of Medicine
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110
| | - Gabriel Mbalaviele
- Musculoskeletal Research Center, Division of Bone and Mineral Diseases, Department of Medicine
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Heckt T, Keller J, Reusch R, Hartmann K, Krasemann S, Hermans-Borgmeyer I, Amling M, Schinke T. No obvious phenotypic abnormalities in mice lacking the Pate4 gene. Biochem Biophys Res Commun 2015; 469:1069-74. [PMID: 26731031 DOI: 10.1016/j.bbrc.2015.12.104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 12/22/2015] [Indexed: 12/27/2022]
Abstract
We have previously reported that the hormone calcitonin (CT) negatively regulates bone formation by inhibiting the release of sphingosine-1-phosphate from bone-resorbing osteoclasts. In the context of this study we additionally observed that CT repressed the expression of Pate4, encoding the secreted protein caltrin/Svs7, in osteoclasts from wildtype mice. To assess a possible function of Pate4 in bone remodeling, we utilized commercially available embryonic stem cells with a targeted Pate4 allele to generate Pate4-deficient mice. These were born at the expected Mendelian ratio and did not display obvious abnormalities until the age of 6 months. A bone-specific histomorphometric analysis further revealed that bone remodeling is unaffected in male and female Pate4-deficient mice. Since a subsequently performed multi-tissue expression analysis confirmed that Pate4 is primarily expressed in prostate and seminal vesicles, we additionally analyzed the respective tissues of Pate4-deficient mice, but failed to detect histological abnormalities. Most importantly, as assessed by mating with female wildtype mice, we did not observe reduced fertility associated with Pate4-deficiency. Taken together, our study was the first to generate and analyze a mouse model lacking Pate4, a gene with strong expression in prostate and seminal vesicles, yet without major function for fertility.
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Affiliation(s)
- Timo Heckt
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany
| | - Johannes Keller
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany
| | - Roswitha Reusch
- Central Animal Facility, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany
| | - Kristin Hartmann
- Insitute of Neuropathology, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany
| | - Susanne Krasemann
- Insitute of Neuropathology, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany
| | | | - Michael Amling
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany
| | - Thorsten Schinke
- Department of Osteology and Biomechanics, University Medical Center Hamburg Eppendorf, Hamburg 20246, Germany.
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27
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Mineral homeostasis and regulation of mineralization processes in the skeletons of sharks, rays and relatives (Elasmobranchii). Semin Cell Dev Biol 2015; 46:51-67. [DOI: 10.1016/j.semcdb.2015.10.022] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 10/13/2015] [Indexed: 01/01/2023]
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Yamaguchi M, Watanabe Y, Ohtani T, Uezumi A, Mikami N, Nakamura M, Sato T, Ikawa M, Hoshino M, Tsuchida K, Miyagoe-Suzuki Y, Tsujikawa K, Takeda S, Yamamoto H, Fukada SI. Calcitonin Receptor Signaling Inhibits Muscle Stem Cells from Escaping the Quiescent State and the Niche. Cell Rep 2015; 13:302-14. [PMID: 26440893 DOI: 10.1016/j.celrep.2015.08.083] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 06/09/2015] [Accepted: 08/31/2015] [Indexed: 01/26/2023] Open
Abstract
Calcitonin receptor (Calcr) is expressed in adult muscle stem cells (muscle satellite cells [MuSCs]). To elucidate the role of Calcr, we conditionally depleted Calcr from adult MuSCs and found that impaired regeneration after muscle injury correlated with the decreased number of MuSCs in Calcr-conditional knockout (cKO) mice. Calcr signaling maintained MuSC dormancy via the cAMP-PKA pathway but had no impact on myogenic differentiation of MuSCs in an undifferentiated state. The abnormal quiescent state in Calcr-cKO mice resulted in a reduction of the MuSC pool by apoptosis. Furthermore, MuSCs were found outside their niche in Calcr-cKO mice, demonstrating cell relocation. This emergence from the sublaminar niche was prevented by the Calcr-cAMP-PKA and Calcr-cAMP-Epac pathways downstream of Calcr. Altogether, the findings demonstrated that Calcr exerts its effect specifically by keeping MuSCs in a quiescent state and in their location, maintaining the MuSC pool.
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Affiliation(s)
- Masahiko Yamaguchi
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoko Watanabe
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takuji Ohtani
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akiyoshi Uezumi
- Division for Therapies Against Intractable Diseases, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192, Japan
| | - Norihisa Mikami
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Miki Nakamura
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takahiko Sato
- Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Masahito Ikawa
- Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Mikio Hoshino
- Department of Biochemistry and Cellular Biology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, Tokyo 187-8502, Japan
| | - Kunihiro Tsuchida
- Division for Therapies Against Intractable Diseases, Institute for Comprehensive Medical Science, Fujita Health University, 1-98 Dengakugakubo, Kutsukake, Toyoake, Aichi 470-1192, Japan
| | - Yuko Miyagoe-Suzuki
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, Tokyo 187-8502, Japan
| | - Kazutake Tsujikawa
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shin'ichi Takeda
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-Higashi, Kodaira, Tokyo 187-8502, Japan
| | - Hiroshi Yamamoto
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - So-ichiro Fukada
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
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Clarke MV, Russell PK, Findlay DM, Sastra S, Anderson PH, Skinner JP, Atkins GJ, Zajac JD, Davey RA. A Role for the Calcitonin Receptor to Limit Bone Loss During Lactation in Female Mice by Inhibiting Osteocytic Osteolysis. Endocrinology 2015; 156:3203-14. [PMID: 26135836 DOI: 10.1210/en.2015-1345] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
During lactation, the large transfer of calcium from the mother to the milk is primarily sourced from the maternal skeleton. To determine whether the calcitonin receptor (CTR) plays a physiological role to protect the skeleton from excessive resorption during lactation, we assessed the maternal skeleton of global CTR knockout (CTRKO) and littermate control mice at the end of lactation (postnatal day 21). Micro-computed tomography analyses showed no effect on trabecular or cortical bone in the distal femur and L1 vertebra of maternal global CTR deletion at the end of lactation in global CTRKO mice compared with that in control mice. Bone resorption, as assessed by osteoclast number and activity at the end of lactation, was unaffected by maternal CTR deletion. Cathepsin K, carbonic anhydrase 2, matrix metalloproteinase 13, and receptor activator of nuclear factor-κB ligand mRNA levels, however, were markedly elevated by 3- to 6.5-fold in whole bone of lactating global CTRKO females. Because these genes have been shown to be up-regulated in osteocytes during lactation when osteocytes resorb their surrounding bone matrix, together with their reported expression of the CTR, we determined the osteocyte lacunar area in cortical bone. After lactation, the top 20% of osteocyte lacunar area in global CTRKO mice was 10% larger than the top 20% in control mice. These data are consistent with an increased osteocytic osteolysis in global CTRKO mice during lactation, which is further supported by the increased serum calcium observed in global CTRKO mice after lactation. These results provide evidence for a physiological role for the CTR to protect the maternal skeleton during lactation by a direct action on osteocytes to inhibit osteolysis.
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Affiliation(s)
- Michele V Clarke
- Department of Medicine (M.V.C., P.K.R., S.S., J.P.S., J.D.Z., R.A.D.), Austin Health, University of Melbourne, Heidelberg, 3084 Victoria, Australia; Centre for Orthopaedic and Trauma Research (D.M.F., G.J.A.), University of Adelaide, 5005 Adelaide, Australia; and School of Pharmacy and Medical Sciences (P.H.A.), University of South Australia, 5005 Adelaide, Australia
| | - Patricia K Russell
- Department of Medicine (M.V.C., P.K.R., S.S., J.P.S., J.D.Z., R.A.D.), Austin Health, University of Melbourne, Heidelberg, 3084 Victoria, Australia; Centre for Orthopaedic and Trauma Research (D.M.F., G.J.A.), University of Adelaide, 5005 Adelaide, Australia; and School of Pharmacy and Medical Sciences (P.H.A.), University of South Australia, 5005 Adelaide, Australia
| | - David M Findlay
- Department of Medicine (M.V.C., P.K.R., S.S., J.P.S., J.D.Z., R.A.D.), Austin Health, University of Melbourne, Heidelberg, 3084 Victoria, Australia; Centre for Orthopaedic and Trauma Research (D.M.F., G.J.A.), University of Adelaide, 5005 Adelaide, Australia; and School of Pharmacy and Medical Sciences (P.H.A.), University of South Australia, 5005 Adelaide, Australia
| | - Stephen Sastra
- Department of Medicine (M.V.C., P.K.R., S.S., J.P.S., J.D.Z., R.A.D.), Austin Health, University of Melbourne, Heidelberg, 3084 Victoria, Australia; Centre for Orthopaedic and Trauma Research (D.M.F., G.J.A.), University of Adelaide, 5005 Adelaide, Australia; and School of Pharmacy and Medical Sciences (P.H.A.), University of South Australia, 5005 Adelaide, Australia
| | - Paul H Anderson
- Department of Medicine (M.V.C., P.K.R., S.S., J.P.S., J.D.Z., R.A.D.), Austin Health, University of Melbourne, Heidelberg, 3084 Victoria, Australia; Centre for Orthopaedic and Trauma Research (D.M.F., G.J.A.), University of Adelaide, 5005 Adelaide, Australia; and School of Pharmacy and Medical Sciences (P.H.A.), University of South Australia, 5005 Adelaide, Australia
| | - Jarrod P Skinner
- Department of Medicine (M.V.C., P.K.R., S.S., J.P.S., J.D.Z., R.A.D.), Austin Health, University of Melbourne, Heidelberg, 3084 Victoria, Australia; Centre for Orthopaedic and Trauma Research (D.M.F., G.J.A.), University of Adelaide, 5005 Adelaide, Australia; and School of Pharmacy and Medical Sciences (P.H.A.), University of South Australia, 5005 Adelaide, Australia
| | - Gerald J Atkins
- Department of Medicine (M.V.C., P.K.R., S.S., J.P.S., J.D.Z., R.A.D.), Austin Health, University of Melbourne, Heidelberg, 3084 Victoria, Australia; Centre for Orthopaedic and Trauma Research (D.M.F., G.J.A.), University of Adelaide, 5005 Adelaide, Australia; and School of Pharmacy and Medical Sciences (P.H.A.), University of South Australia, 5005 Adelaide, Australia
| | - Jeffrey D Zajac
- Department of Medicine (M.V.C., P.K.R., S.S., J.P.S., J.D.Z., R.A.D.), Austin Health, University of Melbourne, Heidelberg, 3084 Victoria, Australia; Centre for Orthopaedic and Trauma Research (D.M.F., G.J.A.), University of Adelaide, 5005 Adelaide, Australia; and School of Pharmacy and Medical Sciences (P.H.A.), University of South Australia, 5005 Adelaide, Australia
| | - Rachel A Davey
- Department of Medicine (M.V.C., P.K.R., S.S., J.P.S., J.D.Z., R.A.D.), Austin Health, University of Melbourne, Heidelberg, 3084 Victoria, Australia; Centre for Orthopaedic and Trauma Research (D.M.F., G.J.A.), University of Adelaide, 5005 Adelaide, Australia; and School of Pharmacy and Medical Sciences (P.H.A.), University of South Australia, 5005 Adelaide, Australia
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Felsenfeld AJ, Levine BS. Calcitonin, the forgotten hormone: does it deserve to be forgotten? Clin Kidney J 2015; 8:180-7. [PMID: 25815174 PMCID: PMC4370311 DOI: 10.1093/ckj/sfv011] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Accepted: 01/30/2015] [Indexed: 12/12/2022] Open
Abstract
Calcitonin is a 32 amino acid hormone secreted by the C-cells of the thyroid gland. Calcitonin has been preserved during the transition from ocean-based life to land dwellers and is phylogenetically older than parathyroid hormone. Calcitonin secretion is stimulated by increases in the serum calcium concentration and calcitonin protects against the development of hypercalcemia. Calcitonin is also stimulated by gastrointestinal hormones such as gastrin. This has led to the unproven hypothesis that postprandial calcitonin stimulation could play a role in the deposition of calcium and phosphate in bone after feeding. However, no bone or other abnormalities have been described in states of calcitonin deficiency or excess except for diarrhea in a few patients with medullary thyroid carcinoma. Calcitonin is known to stimulate renal 1,25 (OH)2 vitamin D (1,25D) production at a site in the proximal tubule different from parathyroid hormone and hypophosphatemia. During pregnancy and lactation, both calcitonin and 1,25D are increased. The increases in calcitonin and 1,25D may be important in the transfer of maternal calcium to the fetus/infant and in the prevention and recovery of maternal bone loss. Calcitonin has an immediate effect on decreasing osteoclast activity and has been used for treatment of hypercalcemia. Recent studies in the calcitonin gene knockout mouse have shown increases in bone mass and bone formation. This last result together with the presence of calcitonin receptors on the osteocyte suggests that calcitonin could possibly affect osteocyte products which affect bone formation. In summary, a precise role for calcitonin remains elusive more than 50 years after its discovery.
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Affiliation(s)
- Arnold J Felsenfeld
- Department of Medicine , VA Greater Los Angeles Healthcare System and the David Geffen School of Medicine at UCLA , Los Angeles, CA , USA
| | - Barton S Levine
- Department of Medicine , VA Greater Los Angeles Healthcare System and the David Geffen School of Medicine at UCLA , Los Angeles, CA , USA
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31
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The role of calcitonin receptor signalling in polyethylene particle-induced osteolysis. Acta Biomater 2015; 14:125-32. [PMID: 25486133 DOI: 10.1016/j.actbio.2014.11.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 11/14/2014] [Accepted: 11/28/2014] [Indexed: 12/28/2022]
Abstract
The detection of peptides from the calcitonin (CT) family in the periarticular tissue of loosened implants has raised hopes of opening new regenerative therapies in the process of aseptic loosening, which remains the major cause of early implant failure in endoprosthetic surgery. We have previously shown the roles of α-calcitonin gene-related peptide (α-CGRP) and the CALCA gene which encodes α-CGRP/CT in this process. To uncover the role of direct calcitonin receptor (CTR) mediated signalling, we studied particle-induced osteolysis (PIO) in a murine calvaria model with a global deletion of the CTR (CTR-KO) using μCT analysis and histomorphometry. As expected, CTR-KO mice revealed reduced bone volume compared to wild-type (WT) controls (p<0.05). In CTR-KO mice we found significantly higher RANKL (receptor activator of NF-κB ligand) expression in the particle group than in the control group. The increase in osteoclast numbers by the particles was twice as high as the increase of osteoclasts in the WT mice (400 vs. 200%). Changes in the eroded surface and actual osteolysis due to ultrahigh-molecular-weight polyethylene particles were similar in WTs and CTR-KOs. Taken together, our findings strengthen the relevance of the OPG/RANK/RANKL system in the PIO process. CTR seems to have an effect on osteoclast differentiation in this context. As there were no obvious changes of the amount of PIO in CTR deficiency, regenerative strategies in aseptic loosening of endoprosthetic implants based on peptides arising from the CT family should rather focus on the impact of α-CGRP.
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Chia LY, Walsh NC, Martin TJ, Sims NA. Isolation and gene expression of haematopoietic-cell-free preparations of highly purified murine osteocytes. Bone 2015; 72:34-42. [PMID: 25460578 DOI: 10.1016/j.bone.2014.11.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 10/14/2014] [Accepted: 11/11/2014] [Indexed: 10/24/2022]
Abstract
To define their gene expression and function, osteocytes are commonly isolated and purified by fluorescence-activated cell sorting (FACS) from mice expressing GFP directed by the dentin matrix protein 1 (Dmp1) promoter (DMP1-GFP). These cells express mRNA for osteocyte genes, including sclerostin (Sost) and Dmp1, and genes associated with the osteoclast phenotype: Dcstamp, Oscar, Cathepsin K (Ctsk), tartrate resistant acid phosphatase (TRAP/Acp5) and calcitonin receptor (Calcr). This suggests either that osteoclasts and osteocytes share genes and functions or that DMP1-GFP(+) preparations contain haematopoietic osteoclasts. To resolve this we stained DMP1-GFP cells for haematopoietic lineage (Lin) surface markers (CD2, CD3e, CD4, CD45, CD5, CD8, CD11b, B220, Gr1, Ter119) and CD31. Lin(-)CD31(-) (Lin(-)) and Lin(+)CD31(+) (Lin(+)) populations were analysed for GFP, and the four resulting populations assessed by quantitative real-time PCR. Lin(-)GFP(+) cells expressed mRNAs for Sost, Dmp1, and Mepe, confirming their osteocyte identity. Dcstamp and Oscar mRNAs were restricted to haematopoietic (Lin(+)) cells, but Calcr, Ctsk and Acp5 were readily detected in purified osteocytes (Lin(-)GFP(+)). The capacity of these purified osteocytes to support osteoclastogenesis was assessed: no TRAP+ cells with >2 nuclei were formed when purified osteocytes were cultured with bone marrow macrophages and stimulated with 1,25-dihydroxyvitamin-D3/prostaglandin E2. Lin(-)GFP(+) osteocytes also expressed lower levels of Tnfsf11 (RANKL) mRNA than the osteoblast-enriched population (Lin(-)GFP(-)). This demonstrates the importance of haematopoietic depletion in generating highly purified osteocytes and shows that osteocytes express Acp5, Ctsk and Calcr, but not other osteoclast markers, and do not fully support osteoclast formation in vitro.
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Affiliation(s)
- Ling Yeong Chia
- St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia; Department of Medicine at St. Vincent's Hospital, The University of Melbourne, Fitzroy, Victoria, Australia
| | - Nicole C Walsh
- St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia; Department of Medicine at St. Vincent's Hospital, The University of Melbourne, Fitzroy, Victoria, Australia
| | - T John Martin
- St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia; Department of Medicine at St. Vincent's Hospital, The University of Melbourne, Fitzroy, Victoria, Australia
| | - Natalie A Sims
- St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia; Department of Medicine at St. Vincent's Hospital, The University of Melbourne, Fitzroy, Victoria, Australia.
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Martin TJ, Sims NA. Calcitonin physiology, saved by a lysophospholipid. J Bone Miner Res 2015; 30:212-5. [PMID: 25581311 DOI: 10.1002/jbmr.2449] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Revised: 12/30/2014] [Accepted: 01/02/2015] [Indexed: 12/24/2022]
Affiliation(s)
- T John Martin
- St. Vincent's Institute of Medical Research and The University of Melbourne, Department of Medicine, St. Vincent's Hospital, Fitzroy, Australia
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Jablonski H, Kauther MD, Bachmann HS, Jäger M, Wedemeyer C. Calcitonin gene-related peptide modulates the production of pro-inflammatory cytokines associated with periprosthetic osteolysis by THP-1 macrophage-like cells. Neuroimmunomodulation 2015; 22:152-65. [PMID: 24853723 DOI: 10.1159/000360988] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 02/27/2014] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE An anti-resorptive impact of the neuropeptide calcitonin gene-related peptide (CGRP) on periprosthetic osteolysis, the leading cause of early prosthesis loosening, has been shown previously. In this study, the impact of CGRP on pro-inflammatory cytokine production associated with periprosthetic osteolysis was analysed using THP-1 macrophage-like cells. METHODS Cells were stimulated with ultra-high-molecular-weight polyethylene (UHMWPE) particles (cell-to-particle ratios of 1:100 and 1:500) and lipopolysaccharides (LPS; 1 µg/ml) to establish osteolytic conditions, and simultaneously treated with CGRP (10(-8)M). Receptor activator of nuclear factor-κB (RANK), RANK ligand (RANKL) and tumour necrosis factor (TNF)-α mRNA expression were measured by quantitative RT-PCR. RANK protein was detected by Western blot. Secreted protein levels of TNF-α as well as interleukin (IL)-1β and IL-6 were quantified in cell culture supernatants by ELISA and Bio-Plex cytokine assay, respectively. RESULTS Activation of macrophage-like cells failed to enhance the production of RANK but led to a dose- and time-dependent increase of TNF-α mRNA and secreted protein levels of TNF-α, IL-1β and IL-6. Application of CGRP time-dependently suppressed TNF-α mRNA expression induced by low-particle concentrations and LPS, while both particle- and LPS-induced secretion of TNF-α was inhibited. A pronounced inhibitory effect of CGRP on LPS-induced cytokine production at 24 h of incubation was also observed with IL-1β and IL-6. CONCLUSIONS CGRP shows a time-dependent inhibitory effect on the secretion of osteolysis-associated pro-inflammatory cytokines, indicating an indirect anti-resorptive influence of the neuropeptide on both aseptic prosthesis loosening and bacterially induced bone resorption which might enhance the life time of total joint replacements.
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Affiliation(s)
- Heidrun Jablonski
- Department of Orthopaedics, University Hospital Essen, University of Duisburg Essen, Essen, Germany
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Rizzoli R, Sigaud A, Azria M, Herrmann FR. Nasal salmon calcitonin blunts bone microstructure alterations in healthy postmenopausal women. Osteoporos Int 2015; 26:383-93. [PMID: 25566730 DOI: 10.1007/s00198-014-2937-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Accepted: 10/08/2014] [Indexed: 11/28/2022]
Abstract
UNLABELLED In healthy postmenopausal women, nasal salmon calcitonin blunted distal radius and tibia bone microstructure degradation. INTRODUCTION Nasal salmon calcitonin (NSC) has been reported to lower vertebral fracture risk by 33%, but to modestly increase spine areal bone mineral density (aBMD) by 1.5%. Thus, NSC may also influence bone microstructure, another known determinant of bone strength. METHODS In a randomized, double-blind, placebo-controlled trial, we investigated the effects of 200 IU/day NSC on distal radius and tibia bone microstructure (by high-resolution 3-dimensional peripheral quantitative computerized tomography), aBMD (by dual-energy X-ray absorptiometry), and serum bone turnover markers in healthy postmenopausal women. RESULTS Mean age was 57.6 ± 0.8 (±SEM) and 57.4 ± 0.7 in NSC (n = 45) and placebo groups (n = 45), respectively. Mean femoral neck T-score was in the osteopenic range; prevalent vertebral fracture was 4% in each group. There was no observed between-group difference in the primary outcome distal radius BV/TV (-2.8 ± 0.6% vs. -4.3 ± 1.0%, NS). By 2 years, the decrease in distal radius total density vs. baseline was 4.4 ± 0.7% in controls and 2.1 ± 0.6% in NSC-receiving patients (p < 0.05). Distal radius and tibia cortical thickness decreased by 3.7 ± 1.0 and 2.4 ± 0.5% in placebo (p < 0.05 vs. baseline for both), respectively, but not in the NSC group. Distal radius total density and cortical thickness changes were lower in NSC group than in placebo (p < 0.05 for both) in the subgroup with baseline C-terminal telopeptides (CTX) above the median. By 6 and 12 months, serum CTX decreased by 17.3 ± 6.2 and 19.1 ± 6.6% (both p < 0.05 vs. baseline), respectively, in NSC, but remained stable in controls (NS vs. baseline). There was no difference in aBMD. NSC was well tolerated, with less arthralgia than the placebo group (14 vs. 26, p < 0.05). CONCLUSION Nasal salmon calcitonin blunted the degradation of distal radius and tibia bone microstructure in healthy postmenopausal women.
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Affiliation(s)
- R Rizzoli
- Division of Bone Diseases, Department of Internal Medicine Specialties, Geneva University Hospitals and Faculty of Medicine, 1211, Geneva 14, Switzerland,
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Abstract
The thyroid parafollicular cell, or commonly named "C-cell," functions in serum calcium homeostasis. Elevations in serum calcium trigger release of calcitonin from the C-cell, which in turn functions to inhibit absorption of calcium by the intestine, resorption of bone by the osteoclast, and reabsorption of calcium by renal tubular cells. Oncogenic transformation of the thyroid C-cell is thought to progress through a hyperplastic process prior to malignancy with increasing levels of serum calcitonin serving as a biomarker for tumor burden. The discovery that multiple endocrine neoplasia type 2 is caused by activating mutations of the RET gene serves to highlight the RET-RAS-MAPK signaling pathway in both initiation and progression of medullary thyroid carcinoma (MTC). Thyroid C-cells are known to express RET at high levels relative to most cell types; therefore, aberrant activation of this receptor is targeted primarily to the C-cell, providing one possible cause of tissue-specific oncogenesis. The role of RET signaling in normal C-cell function is unknown though calcitonin gene transcription appears to be sensitive to RET activation. Beyond RET, the modeling of oncogenesis in animals and screening of human tumors for candidate gene mutations have uncovered mutation of RAS family members and inactivation of Rb1 regulatory pathway as potential mediators of C-cell transformation. A growing understanding of how RET interacts with these pathways, both in normal C-cell function and during oncogenic transformation, will help in the development of novel molecular-targeted therapies.
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Affiliation(s)
- Gilbert J Cote
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 1461, Houston, TX, 77030, USA.
| | - Elizabeth G Grubbs
- Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 1484, Houston, TX, 77030, USA
| | - Marie-Claude Hofmann
- Department of Endocrine Neoplasia and Hormonal Disorders, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd., Unit 1461, Houston, TX, 77030, USA
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Kovacs CS. Bone development and mineral homeostasis in the fetus and neonate: roles of the calciotropic and phosphotropic hormones. Physiol Rev 2014; 94:1143-218. [PMID: 25287862 DOI: 10.1152/physrev.00014.2014] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Mineral and bone metabolism are regulated differently in utero compared with the adult. The fetal kidneys, intestines, and skeleton are not dominant sources of mineral supply for the fetus. Instead, the placenta meets the fetal need for mineral by actively transporting calcium, phosphorus, and magnesium from the maternal circulation. These minerals are maintained in the fetal circulation at higher concentrations than in the mother and normal adult, and such high levels appear necessary for the developing skeleton to accrete a normal amount of mineral by term. Parathyroid hormone (PTH) and calcitriol circulate at low concentrations in the fetal circulation. Fetal bone development and the regulation of serum minerals are critically dependent on PTH and PTH-related protein, but not vitamin D/calcitriol, fibroblast growth factor-23, calcitonin, or the sex steroids. After birth, the serum calcium falls and phosphorus rises before gradually reaching adult values over the subsequent 24-48 h. The intestines are the main source of mineral for the neonate, while the kidneys reabsorb mineral, and bone turnover contributes mineral to the circulation. This switch in the regulation of mineral homeostasis is triggered by loss of the placenta and a postnatal fall in serum calcium, and is followed in sequence by a rise in PTH and then an increase in calcitriol. Intestinal calcium absorption is initially a passive process facilitated by lactose, but later becomes active and calcitriol-dependent. However, calcitriol's role can be bypassed by increasing the calcium content of the diet, or by parenteral administration of calcium.
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Affiliation(s)
- Christopher S Kovacs
- Faculty of Medicine-Endocrinology, Memorial University of Newfoundland, St. John's, Newfoundland, Canada
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38
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Calcitonin controls bone formation by inhibiting the release of sphingosine 1-phosphate from osteoclasts. Nat Commun 2014; 5:5215. [PMID: 25333900 PMCID: PMC4205484 DOI: 10.1038/ncomms6215] [Citation(s) in RCA: 143] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 09/10/2014] [Indexed: 12/25/2022] Open
Abstract
The hormone calcitonin (CT) is primarily known for its pharmacologic
action as an inhibitor of bone resorption, yet CT-deficient mice display increased bone formation. These findings
raised the question about the underlying cellular and molecular mechanism of
CT action. Here we show that either
ubiquitous or osteoclast-specific inactivation of the murine CT receptor (CTR) causes increased bone formation. CT negatively regulates the osteoclast expression
of Spns2 gene, which encodes a
transporter for the signalling lipid sphingosine
1-phosphate (S1P).
CTR-deficient mice show increased
S1P levels, and their skeletal
phenotype is normalized by deletion of the S1P receptor S1P3. Finally, pharmacologic treatment
with the nonselective S1P receptor agonist FTY720 causes increased bone formation in wild-type, but not in
S1P3-deficient mice.
This study redefines the role of CT in
skeletal biology, confirms that S1P
acts as an osteoanabolic molecule in vivo and provides evidence for a
pharmacologically exploitable crosstalk between osteoclasts and osteoblasts. The regulatory role of calcitonin in bone homeostasis is well studied,
yet its molecular activity is poorly understood. The authors show that calcitonin regulates
bone cells function by inhibiting the osteoclast secretion of sphingosine 1-phosphate, a
lipid mediator of osteoclast–osteoblast crosstalk.
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Lowry MB, Guo C, Borregaard N, Gombart AF. Regulation of the human cathelicidin antimicrobial peptide gene by 1α,25-dihydroxyvitamin D3 in primary immune cells. J Steroid Biochem Mol Biol 2014; 143:183-91. [PMID: 24565560 PMCID: PMC4127358 DOI: 10.1016/j.jsbmb.2014.02.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 02/12/2014] [Accepted: 02/15/2014] [Indexed: 01/08/2023]
Abstract
Production of the human cathelicidin antimicrobial peptide gene (hCAP18/LL-37), is regulated by 1α,25-dihydroxyvitamin D3 (1,25D3) and is critical in the killing of pathogens by innate immune cells. In addition, secreted LL-37 binds extracellular receptors and modulates the recruitment and activity of both innate and adaptive immune cells. Evidence suggests that during infections activated immune cells locally produce increased levels of 1,25D3 thus increasing production of hCAP18/LL-37. The relative expression levels of hCAP18/LL-37 among different immune cell types are not well characterized. The aim of this study was to determine the relative levels of hCAP18/LL-37 in human peripheral blood immune cells and determine to what extent 1,25D3 increased its expression in peripheral blood-derived cells. We show for the first time, a hierarchy of expression of hCAP18 in freshly isolated cells with low levels in lymphocytes, intermediate levels in monocytes and the highest levels found in neutrophils. In peripheral blood-derived cells, the highest levels of hCAP18 following treatment with 1,25D3 were in macrophages, while comparatively lower levels were found in GM-CSF-derived dendritic cells and osteoclasts. We also tested whether treatment with parathyroid hormone in combination with 1,25D3 would enhance hCAP18 induction as has been reported in skin cells, but we did not find enhancement in any immune cells tested. Our results indicate that hCAP18 is expressed at different levels according to cell type and lineage. Furthermore, potent induction of hCAP18 by 1,25D3 in macrophages and dendritic cells may modulate functions of both innate and adaptive immune cells at sites of infection.
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Affiliation(s)
- Malcolm B Lowry
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA; Department of Microbiology, Oregon State University, Corvallis, OR 97331, USA
| | - Chunxiao Guo
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA; Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR 97331, USA
| | - Niels Borregaard
- Department of Hematology, Rigshospitalet-4042, University of Copenhagen, Copenhagen DK-1200, Denmark
| | - Adrian F Gombart
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA; Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR 97331, USA.
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40
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Gooi JH, Chia LY, Walsh NC, Karsdal MA, Quinn JMW, Martin TJ, Sims NA. Decline in calcitonin receptor expression in osteocytes with age. J Endocrinol 2014; 221:181-91. [PMID: 24516262 DOI: 10.1530/joe-13-0524] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We have previously shown that co-administration of the transient osteoclast inhibitor, salmon calcitonin (sCT), blunts the anabolic effect of parathyroid hormone (PTH) in young rats and increases osteocytic expression of the bone formation inhibitor sclerostin (Sost). To determine whether this also occurs in adult animals, we co-administered sCT with PTH to 6-month-old sham-operated (SHAM) and ovariectomised (OVX) rats. While sCT reduced the stimulatory effect of PTH on serum amino-terminal propeptide of type 1 procollagen levels, in contrast to its influence in young rats, sCT did not reduce the anabolic effect of PTH on femoral bone mineral density, tibial trabecular bone volume or bone formation rate in 6-month-old SHAM or OVX rats. Quantitative real-time PCR analysis of femoral metaphyses collected 1 and 4 h after a single PTH injection confirmed a significant increase in mRNA levels for interleukin 6 (Il6) and ephrinB2 (EfnB2), and a significant reduction in Sost and dentin matrix protein-1 (Dmp1) in response to PTH. However, in contrast to observations in young rats, these effects were not modified by co-administration of sCT, nor did sCT significantly modify Sost, Dmp1, or matrix extracellular phosphoglycoprotein (Mepe) mRNA levels. Furthermore, while CT receptor (CTR) mRNA (Calcr) was readily detected in GFP+ osteocytes isolated from young (3-week-old) DMP1-GFP mice, Calcr levels in osteocytes declined as mice aged, reaching levels that were undetectable in long bone at 49 weeks of age. These data indicate that osteocyte-mediated responses to CT are most likely to be of physiological relevance in young rodents.
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Affiliation(s)
- Jonathan H Gooi
- St Vincent's Institute, and Department of Medicine, at St Vincent's Hospital, The University of Melbourne, 9 Princes Street, Fitzroy, Victoria 3065, Australia Nordic Bioscience Inc., Copenhagen, Denmark
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Mai TH, Wu J, Diedrich A, Garland EM, Robertson D. Calcitonin gene-related peptide (CGRP) in autonomic cardiovascular regulation and vascular structure. ACTA ACUST UNITED AC 2014; 8:286-96. [PMID: 24746612 DOI: 10.1016/j.jash.2014.03.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 02/28/2014] [Accepted: 03/04/2014] [Indexed: 02/06/2023]
Abstract
Calcitonin gene-related peptide (CGRP) is reported to play important roles in cardiovascular regulation in human and animal models. In spite of this, its role remains controversial. We aim to clarify this by studying the autonomic cardiovascular function and vascular structure in CGRP knockout (CGRP(-/-)) mice. Blood pressure (BP) and heart rate (HR) were assessed by telemeters. Urine (24-hour) and blood were collected for catecholamines measurements. Baroreflex sensitivity was assessed using phenylephrine and sodium nitroprusside administered in an acute study. Daytime mean arterial pressure (MAP; 12-hour period) was significantly higher in the CGRP(-/-) mice than in the wild type (WT) mice (114.5 vs. 104.5 mm Hg; P = .04). Norepinephrine was elevated in plasma and 24-hour urine in the knockouts (Urine, 956 vs. 618 pg/mL; P = .004; Plasma, 2505 vs. 1168 pg/mL; P = .04). Paradoxically, cardiovagal baroreflex sensitivity was higher in CGRP(-/-) mice (3.2 vs. 1.4 ms/mm Hg; P = .03). To increase insight, we studied aortic stiffness in CGRP(-/-) mice and found it increased compared with age-matched WT mice, as evidenced by the depression of the compliance curve (P < .05). CGRP(-/-) mice have higher BP due to elevated sympathetic signals and abnormalities in blood vessel structure. Moreover, our data also showed that CGRP plays an important role in the regulation of the cardio-vagal tone.
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Affiliation(s)
- Tu H Mai
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - Jing Wu
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - André Diedrich
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA; Autonomic Dysfunction Center, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA; Department of Biomedical Engineering, Vanderbilt University, Nashville, TN, USA
| | - Emily M Garland
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA
| | - David Robertson
- Department of Pharmacology, Vanderbilt University, Nashville, TN, USA; Autonomic Dysfunction Center, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA; Department of Neurology, Vanderbilt University Medical Center, Nashville, TN, USA.
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Multiple endocrine neoplasia type 2 (MEN2). Mol Oncol 2013. [DOI: 10.1017/cbo9781139046947.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Mabilleau G, Mieczkowska A, Irwin N, Flatt PR, Chappard D. Optimal bone mechanical and material properties require a functional glucagon-like peptide-1 receptor. J Endocrinol 2013; 219:59-68. [PMID: 23911987 DOI: 10.1530/joe-13-0146] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Bone is permanently remodeled by a complex network of local, hormonal, and neuronal factors that affect osteoclast and osteoblast biology. Among these factors, a role for gastrointestinal hormones has been proposed based on the evidence that bone resorption dramatically falls after a meal. Glucagon-like peptide-1 (GLP1) is one of these gut hormones, and despite several reports suggesting an anabolic effect of GLP1, or its stable analogs, on bone mass, little is known about the effects of GLP1/GLP1 receptor on bone strength. In this study, we investigated by three-point bending, quantitative X-ray microradiography, microcomputed tomography, qBEI, and FTIRI bone strength and bone quality in male Glp1r knockout (Glp1r KO) mice when compared with control WT animals. Animals with a deletion of Glp1r presented with a significant reduction in ultimate load, yield load, stiffness, and total absorbed and post-yield energies when compared with WT animals. Furthermore, cortical thickness and bone outer diameter were significantly decreased in deficient animals. The mineral quantity and quality were not significantly different between Glp1r KO and WT animals. On the other hand, the maturity of the collagen matrix was significantly reduced in deficient animals and associated with lowered material properties. Taken together, these data support a positive effect of GLP1R on bone strength and quality.
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Affiliation(s)
- Guillaume Mabilleau
- Groupe d'Etudes sur le Remodelage Osseux et les bioMatériaux (GEROM)-LHEA, Service Commun d'Imageries et d'Analyses Microscopiques (SCIAM), IRIS-IBS Institut de Biologie en Santé, LUNAM Université, CHU d'Angers, 49933 Angers Cedex, France
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Tuvim MJ, Clement CG, Huang ESC, Cote GJ, Evans SE, Lei X, Deftos LJ, Gagel RF, Dickey BF. Deletion of the gene encoding calcitonin and calcitonin gene-related peptide α does not affect the outcome of severe infection in mice. Am J Respir Cell Mol Biol 2013; 49:151-5. [PMID: 23526213 DOI: 10.1165/rcmb.2012-0489oc] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Procalcitonin (PCT) is expressed in nonthryoidal tissues of humans during severe infections. Serum PCT levels are measured to diagnose and guide therapy, and there is some evidence that PCT may also contribute to the pathogenesis of sepsis. We tested whether disruption of the gene encoding PCT in mice affected the course of sepsis. Mice with exons 2-5 of the gene encoding calcitonin/calcitonin gene-related polypeptide α (Calca) knocked out and congenic C57BL/6J control mice were challenged with aerosolized Streptococcus pneumoniae or Pseudomonas aeruginosa, or injected intraperitoneally with S. pneumoniae. There were no significant differences in the survival of knockout and control mice in the two pneumonia models, and no significant differences in weight loss, splenic bacterial counts, or blood leukocyte levels in the peritoneal sepsis model. To verify disruption of the Calca gene in knockout mice, the absence of calcitonin in the serum of knockout mice and its presence and inducibility in control mice were confirmed. To evaluate PCT expression in nonthyroidal tissues of control mice, transcripts were measured in multiple organs. PCT transcripts were not significantly expressed in liver or spleen of control mice challenged with aerosolized P. aeruginosa or intraperitoneal endotoxin, and were expressed in lung only at low levels, even though serum IL-6 rose 3,548-fold. We conclude that mice are not an ideal loss-of-function model to test the role of PCT in the pathogenesis of sepsis because of low nonendocrine PCT expression during infection and inflammation. Nonetheless, our studies demonstrate that nonendocrine PCT expression is not necessary for adverse outcomes from sepsis.
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Affiliation(s)
- Michael J Tuvim
- Department of Pulmonary Medicine, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
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Gupta S, McCarson KE, Welch KMA, Berman NEJ. Mechanisms of pain modulation by sex hormones in migraine. Headache 2013; 51:905-22. [PMID: 21631476 DOI: 10.1111/j.1526-4610.2011.01908.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A number of pain conditions, acute as well as chronic, are much more prevalent in women, such as temporomandibular disorder (TMD), irritable bowel syndrome, fibromyalgia, and migraine. The association of female sex steroids with these nociceptive conditions is well known, but the mechanisms of their effects on pain signaling are yet to be deciphered. We reviewed the mechanisms through which female sex steroids might influence the trigeminal nociceptive pathways with a focus on migraine. Sex steroid receptors are located in trigeminal circuits, providing the molecular substrate for direct effects. In addition to classical genomic effects, sex steroids exert rapid nongenomic actions to modulate nociceptive signaling. Although there are only a handful of studies that have directly addressed the effect of sex hormones in animal models of migraine, the putative mechanisms can be extrapolated from observations in animal models of other trigeminal pain disorders, like TMD. Sex hormones may regulate sensitization of trigeminal neurons by modulating expression of nociceptive mediator such as calcitonin gene-related peptide. Its expression is mostly positively regulated by estrogen, although a few studies also report an inverse relationship. Serotonin (5-Hydroxytryptamine [5-HT]) is a neurotransmitter implicated in migraine; its synthesis is enhanced in most parts of brain by estrogen, which increases expression of the rate-limiting enzyme tryptophan hydroxylase and decreases expression of the serotonin re-uptake transporter. Downstream signaling, including extracellular signal-regulated kinase activation, calcium-dependent mechanisms, and cAMP response element-binding activation, are thought to be the major signaling events affected by sex hormones. These findings need to be confirmed in migraine-specific animal models that may also provide clues to additional ion channels, neuropeptides, and intracellular signaling cascades that contribute to the increased prevalence of migraine in women.
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Affiliation(s)
- Saurabh Gupta
- Department of Neurology, Glostrup Research Institute, Glostrup Hospital, Faculty of Health Science, University of Copenhagen, Glostrup, Denmark
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Davey RA, Findlay DM. Calcitonin: physiology or fantasy? J Bone Miner Res 2013; 28:973-9. [PMID: 23519892 DOI: 10.1002/jbmr.1869] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 12/13/2012] [Accepted: 01/03/2013] [Indexed: 01/04/2023]
Abstract
Calcitonin, a potent hypocalcemic hormone produced by the C-cells of the thyroid, was first discovered by Harold Copp in 1962. The physiological significance of calcitonin has been questioned, but recent studies using genetically modified mouse models have uncovered additional actions of calcitonin acting through its receptor (CTR) that are of particular significance to the regulation of bone and calcium homeostasis. Mice in which the CTR is deleted in osteoclasts are more susceptible to induced hypercalcemia and exogenous calcitonin is able to lower serum calcium in younger animals. These data are consistent with the hypothesis that calcitonin can regulate serum calcium by inhibiting the efflux of calcium from bone, and that this action is most important when bone turnover is high. Calcitonin has also been implicated in protecting the skeleton from excessive loss of bone mineral during times of high calcium demand, such as lactation. This action may be linked to an intriguing and as yet unexplained observation that calcitonin inhibits bone formation, because deletion of the CTR leads to increased bone formation. We propose several mechanisms by which calcitonin could protect the skeleton by regulating bone turnover, acting within the bone and/or centrally. A new more holistic notion of the physiological role of calcitonin in bone and calcium homeostasis is required and we have highlighted some important knowledge gaps so that future calcitonin research will help to achieve such an understanding.
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Affiliation(s)
- Rachel A Davey
- Department of Medicine, Austin Health, University of Melbourne, Heidelberg, Victoria, Australia.
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Kauther MD, Neuerburg C, Wefelnberg F, Bachmann HS, Schlepper R, Hilken G, Broecker-Preuss M, Grabellus F, Schilling AF, Jäger M, Wedemeyer C. RANKL-associated suppression of particle-induced osteolysis in an aged model of Calcitonin and α-CGRP deficiency. Biomaterials 2013; 34:2911-9. [DOI: 10.1016/j.biomaterials.2013.01.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Accepted: 01/04/2013] [Indexed: 12/15/2022]
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Collins JN, Kirby BJ, Woodrow JP, Gagel RF, Rosen CJ, Sims NA, Kovacs CS. Lactating Ctcgrp nulls lose twice the normal bone mineral content due to fewer osteoblasts and more osteoclasts, whereas bone mass is fully restored after weaning in association with up-regulation of Wnt signaling and other novel genes. Endocrinology 2013; 154:1400-13. [PMID: 23462960 PMCID: PMC3678150 DOI: 10.1210/en.2012-1931] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The maternal skeleton resorbs during lactation to provide calcium to milk and the lost mineral content is restored after weaning. The changes are particularly marked in Ctcgrp null mice, which lose 50% of spine mineral content during lactation but restore it fully. The known calciotropic hormones are not required for skeletal recovery to occur; therefore, unknown factors that stimulate bone formation may be responsible. We hypothesized that the genes responsible for regulating postweaning bone formation are differentially regulated in bone or marrow, and this regulation may be more marked in Ctcgrp null mice. We confirmed that Ctcgrp null mice had twice as many osteoclasts and 30-40% fewer osteoblasts as compared with wild-type mice during lactation but no deficit in osteoblast numbers after weaning. Genome-wide microarray analyses on tibial RNA showed differential expression of 729 genes in wild-type mice at day 7 after weaning vs prepregnancy, whereas the same comparison in Ctcgrp null mice revealed only 283 genes. Down-regulation of Wnt family inhibitors, Sost and Dkk1, and inhibition of Mef2c, a sclerostin stimulator, were observed. Ctsk, a gene expressed during osteoclast differentiation, and Igfbp2, which stimulates bone resorption, were inhibited. Differential regulation of genes involved in energy use was compatible with a net increase in bone formation. The most marked changes occurred in genes not previously associated with bone metabolism. In conclusion, the postlactation skeleton shows dynamic activity with more than 700 genes differentially expressed. Some of these genes are likely to promote bone formation during postweaning by stimulating the proliferation and activity of osteoblasts, inhibiting osteoclasts, and increasing energy use.
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Affiliation(s)
- Jillian N Collins
- Faculty of Medicine—Endocrinology, Memorial University of Newfoundland, St John’s, Newfoundland, Canada A1B 3V6
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Duverger O, Isaac J, Zah A, Hwang J, Berdal A, Lian JB, Morasso MI. In vivo impact of Dlx3 conditional inactivation in neural crest-derived craniofacial bones. J Cell Physiol 2013; 228:654-64. [PMID: 22886599 PMCID: PMC3514657 DOI: 10.1002/jcp.24175] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 08/02/2012] [Indexed: 01/05/2023]
Abstract
Mutations in DLX3 in humans lead to defects in craniofacial and appendicular bones, yet the in vivo activities related to Dlx3 function during normal skeletal development have not been fully elucidated. Here we used a conditional knockout approach to analyze the effects of neural crest deletion of Dlx3 on craniofacial bones development. At birth, mutant mice exhibit a normal overall positioning of the skull bones, but a change in the shape of the calvaria was observed. Molecular analysis of the genes affected in the frontal bones and mandibles from these mice identified several bone markers known to affect bone development, with a strong prediction for increased bone formation and mineralization in vivo. Interestingly, while a subset of these genes were similarly affected in frontal bones and mandibles (Sost, Mepe, Bglap, Alp, Ibsp, Agt), several genes, including Lect1 and Calca, were specifically affected in frontal bones. Consistent with these molecular alterations, cells isolated from the frontal bone of mutant mice exhibited increased differentiation and mineralization capacities ex vivo, supporting cell autonomous defects in neural crest cells. However, adult mutant animals exhibited decreased bone mineral density in both mandibles and calvaria, as well as a significant increase in bone porosity. Together, these observations suggest that mature osteoblasts in the adult respond to signals that regulate adult bone mass and remodeling. This study provides new downstream targets for Dlx3 in craniofacial bone, and gives additional evidence of the complex regulation of bone formation and homeostasis in the adult skeleton.
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Affiliation(s)
- Olivier Duverger
- Developmental Skin Biology Section, NIAMS, NIH, Bethesda, MD20892, USA
| | - Juliane Isaac
- Developmental Skin Biology Section, NIAMS, NIH, Bethesda, MD20892, USA
| | - Angela Zah
- Developmental Skin Biology Section, NIAMS, NIH, Bethesda, MD20892, USA
| | - Joonsung Hwang
- Developmental Skin Biology Section, NIAMS, NIH, Bethesda, MD20892, USA
| | - Ariane Berdal
- INSERM, UMRS 872, Universités Paris 5 and 6, Team 5, 75006 Paris, France
| | - Jane B. Lian
- Departments of Cell Biology and Orthopedic Surgery, University of Massachusetts Medical School, MA01655, USA
| | - Maria I. Morasso
- Developmental Skin Biology Section, NIAMS, NIH, Bethesda, MD20892, USA
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Abstract
During the last years, various novel anti-diabetic drugs have considerably enriched the therapeutic armamentarium for subjects with Type 2 diabetes. In the meantime, much interest has recently been focused on the potential cardiovascular and oncological adverse effects of these new therapies. As to glucagon-like peptide 1 (GLP-1) analogs, medullary thyroid tumors were reported to be more common in rodent toxicology studies with liraglutide, although the relevance of this finding in humans has been questioned. Analyses of sequential changes in calcitonin levels in several thousands of subjects did not reveal a relationship between liraglutide therapy and plasma calcitonin. Furthermore, no medullary thyroid cancer has been detected in humans taking liraglutide. Nevertheless, the long-term consequences of sustained GLP-1 receptor activation in the human thyroid remain unknown and deserve further investigation.
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Affiliation(s)
- M Gallo
- Oncological Endocrinology, AO Citta' della Salute e della Scienza-Molinette, Via Genova, 3, I-10137 Turin, Italy.
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