1
|
Zhang CX, Man QW. Proteomics study of bone tissue around ameloblastoma and the potential mechanism of CD36 in bone remodelling. Br J Oral Maxillofac Surg 2024; 62:290-298. [PMID: 38461076 DOI: 10.1016/j.bjoms.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 11/29/2023] [Accepted: 01/02/2024] [Indexed: 03/11/2024]
Abstract
Ameloblastoma (AM) is characterised by local aggressiveness and bone resorption. To our knowledge, the proteomic profile of bone adjacent to AM has not previously been explored. We therefore looked at the differential proteins in cancellous bone (CB) adjacent to AM and normal CB from the mandible. CB proteins were extracted, purified, quantified, and analysed by liquid chromatography-mass spectrometry (LC-MS) using samples from five patients with AM. These proteins were further investigated using gene ontology for additional functional annotation and enrichment. Proteins that met the screening requirements of expression difference ploidy > 1.5-fold (upregulation and downregulation) and p < 0.05 were subsequently deemed differential proteins. Immunohistochemical staining was performed to confirm the above findings. Compared with normal mandibular CB, 151 differential proteins were identified in CB adjacent to the mandibular AM. These were mainly linked to cellular catabolic processes, lipid metabolism, and fatty acids (FA) metabolism. LC-MS and immunohistochemistry showed that CD36 was one of the notably decreased proteins in CB bordering the AM compared with normal mandibular CB (p = 0.0066 and p = 0.0095, respectively). CD36 expression in CB correlates with bone remodelling in AM, making CD36 a viable target for therapeutic approaches.
Collapse
Affiliation(s)
- Chen-Xi Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Qi-Wen Man
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Oral & Maxillofacial - Head Neck Oncology, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
| |
Collapse
|
2
|
Rubitschung K, Sherwood A, Kapadia R, Xi Y, Hajibeigi A, Rubinow KB, Zerwekh JE, Öz OK. Aromatase deficiency in transplanted bone marrow cells improves vertebral trabecular bone quantity, connectivity, and mineralization and decreases cortical porosity in murine bone marrow transplant recipients. PLoS One 2024; 19:e0296390. [PMID: 38315701 PMCID: PMC10843046 DOI: 10.1371/journal.pone.0296390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 12/12/2023] [Indexed: 02/07/2024] Open
Abstract
Estradiol is an important regulator of bone accumulation and maintenance. Circulating estrogens are primarily produced by the gonads. Aromatase, the enzyme responsible for the conversion of androgens to estrogen, is expressed by bone marrow cells (BMCs) of both hematopoietic and nonhematopoietic origin. While the significance of gonad-derived estradiol to bone health has been investigated, there is limited understanding regarding the relative contribution of BMC derived estrogens to bone metabolism. To elucidate the role of BMC derived estrogens in male bone, irradiated wild-type C57BL/6J mice received bone marrow cells transplanted from either WT (WT(WT)) or aromatase-deficient (WT(ArKO)) mice. MicroCT was acquired on lumbar vertebra to assess bone quantity and quality. WT(ArKO) animals had greater trabecular bone volume (BV/TV p = 0.002), with a higher trabecular number (p = 0.008), connectivity density (p = 0.017), and bone mineral content (p = 0.004). In cortical bone, WT(ArKO) animals exhibited smaller cortical pores and lower cortical porosity (p = 0.02). Static histomorphometry revealed fewer osteoclasts per bone surface (Oc.S/BS%), osteoclasts on the erosion surface (ES(Oc+)/BS, p = 0.04) and low number of osteoclasts per bone perimeter (N.Oc/B.Pm, p = 0.01) in WT(ArKO). Osteoblast-associated parameters in WT(ArKO) were lower but not statistically different from WT(WT). Dynamic histomorphometry suggested similar bone formation indices' patterns with lower mean values in mineral apposition rate, label separation, and BFR/BS in WT(ArKO) animals. Ex vivo bone cell differentiation assays demonstrated relative decreased osteoblast differentiation and ability to form mineralized nodules. This study demonstrates a role of local 17β-estradiol production by BMCs for regulating the quantity and quality of bone in male mice. Underlying in vivo cellular and molecular mechanisms require further study.
Collapse
Affiliation(s)
- Katie Rubitschung
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Amber Sherwood
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Rasesh Kapadia
- Scanco USA Incorporated, Wayne, Pennsylvania, United States of America
| | - Yin Xi
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Asghar Hajibeigi
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Katya B. Rubinow
- Division of Metabolism, Endocrinology, and Nutrition, University of Washington Medicine Diabetes Institute, Seattle, Washington, United States of America
| | - Joseph E. Zerwekh
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, UT Southwestern Medical Center, Dallas, Texas, United States of America
| | - Orhan K. Öz
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, UT Southwestern Medical Center, Dallas, Texas, United States of America
| |
Collapse
|
3
|
Bin Karim K, Giribabu N, Bin Salleh N. Marantodes pumilum (Kacip Fatimah) Aqueous Extract Enhances Osteoblast and Suppresses Osteoclast Activities in Cancellous Bone of a Rat Model of Postmenopause. Appl Biochem Biotechnol 2024; 196:821-840. [PMID: 37219787 DOI: 10.1007/s12010-023-04515-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2023] [Indexed: 05/24/2023]
Abstract
Evidence pointed towards the benefits of Marantodes pumilum in treating osteoporosis after menopause; however, the detailed mechanisms still have not been explored. Therefore, this study aims to identify the molecular mechanisms underlying M. pumilum's bone-protective effect via the involvement of RANK/RANKL/OPG and Wnt/β-catenin signaling pathways. Ovariectomized adult female rats were given M. pumilum leaf aqueous extract (MPLA) (50 and 100 mg/kg/day) and estrogen (positive control) orally for twenty-eight consecutive days. Following the treatment, rats were sacrificed, and femur bones were harvested. Blood was withdrawn for analysis of serum Ca2+, PO43-, and bone alkaline phosphatase (BALP) levels. The bone microarchitectural changes were observed by H&E and PAS staining and distribution and expression of RANK/RANKL/OPG and Wnt3a/β-catenin and its downstream proteins were determined by immunohistochemistry, immunofluorescence, Western blot, and real-time PCR. MPLA treatment increased serum Ca2+ and PO43- levels and reduced serum BALP levels (p < 0.05). Besides, deterioration in cancellous bone microarchitecture and the loss of bone glycogen and collagen content were mitigated by MPLA treatment. Levels of RANKL, Traf6, and NF-kB but not RANK in bone were decreased; however, levels of OPG, Wnt3a, LRP-5, Frizzled, Dvl, β-catenin, RUNX, and Bmp-2 in bone were increased following treatment with MPLA. In conclusion, MPLA helps to protect against bone deterioration in estrogen deficiency state and thus, this herb could potentially be used to ameliorate osteoporosis in women after menopause.
Collapse
Affiliation(s)
- Kamarulzaman Bin Karim
- Department of Physiology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Nelli Giribabu
- Department of Physiology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
- Centre for Natural Products and Drug Discovery (CENAR), Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Naguib Bin Salleh
- Department of Physiology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
- Centre for Natural Products and Drug Discovery (CENAR), Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| |
Collapse
|
4
|
Moriishi T, Kawai Y, Fukuyama R, Matsuo Y, He YW, Akiyama H, Asahina I, Komori T. Bcl2l1 Deficiency in Osteoblasts Reduces the Trabecular Bone Due to Enhanced Osteoclastogenesis Likely through Osteoblast Apoptosis. Int J Mol Sci 2023; 24:17319. [PMID: 38139148 PMCID: PMC10743571 DOI: 10.3390/ijms242417319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/04/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
Bcl2l1 (Bcl-XL) belongs to the Bcl-2 family, Bcl2 and Bcl2-XL are major anti-apoptotic proteins, and the apoptosis of osteoblasts is a key event for bone homeostasis. As the functions of Bcl2l1 in osteoblasts and bone homeostasis remain unclear, we generated osteoblast-specific Bcl2l1-deficient (Bcl2l1fl/flCre) mice using 2.3-kb Col1a1 Cre. Trabecular bone volume and the trabecular number were lower in Bcl2l1fl/flCre mice of both sexes than in Bcl2l1fl/fl mice. In bone histomorphometric analysis, osteoclast parameters were increased in Bcl2l1fl/flCre mice, whereas osteoblast parameters and the bone formation rate were similar to those in Bcl2l1fl/fl mice. TUNEL-positive osteoblastic cells and serum TRAP5b levels were increased in Bcl2l1fl/flCre mice. The deletion of Bcl2l1 in osteoblasts induced Tnfsf11 expression, whereas the overexpression of Bcl-XL had no effect. In a co-culture of Bcl2l1-deficient primary osteoblasts and wild-type bone-marrow-derived monocyte/macrophage lineage cells, the numbers of multinucleated TRAP-positive cells and resorption pits increased. Furthermore, serum deprivation or the deletion of Bcl2l1 in primary osteoblasts increased apoptosis and ATP levels in the medium. Therefore, the reduction in trabecular bone in Bcl2l1fl/flCre mice may be due to enhanced bone resorption through osteoblast apoptosis and the release of ATP from apoptotic osteoblasts, and Bcl2l1 may inhibit bone resorption by preventing osteoblast apoptosis.
Collapse
Affiliation(s)
- Takeshi Moriishi
- Department of Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (T.M.); (Y.M.)
| | - Yosuke Kawai
- Department of Regenerative Oral Surgery, Medical and Dental Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan;
| | - Ryo Fukuyama
- Laboratory of Pharmacology, Hiroshima International University, Kure 737-0112, Japan;
| | - Yuki Matsuo
- Department of Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan; (T.M.); (Y.M.)
- Department of Molecular Bone Biology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| | - You-Wen He
- Department of Immunology, Duke University Medical Center, Durham, NC 27710, USA;
| | - Haruhiko Akiyama
- Department of Orthopedic Surgery, Graduate School of Medicine, Gifu University, Gifu 501-1194, Japan;
| | - Izumi Asahina
- Department of Oral and Maxillofacial Surgery, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan;
| | - Toshihisa Komori
- Department of Molecular Bone Biology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8588, Japan
| |
Collapse
|
5
|
Svensson J, Sjögren K, Lawenius L, Koskela A, Tuukkanen J, Nilsson KH, Movérare-Skrtic S, Ohlsson C. Bone-Derived IGF-I Regulates Radial Bone Growth in Adult Male Mice. Endocrinology 2023; 164:bqad104. [PMID: 37406213 PMCID: PMC10360385 DOI: 10.1210/endocr/bqad104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 06/28/2023] [Accepted: 06/30/2023] [Indexed: 07/07/2023]
Abstract
Insulin-like growth factor-I (IGF-I) levels, which are reduced by age, and cortical bone dimensions are major determinants of fracture risk in elderly subjects. Inactivation of liver-derived circulating IGF-I results in reduced periosteal bone expansion in young and older mice. In mice with lifelong depletion of IGF-I in osteoblast lineage cells, the long bones display reduced cortical bone width. However, it has not previously been investigated whether inducible inactivation of IGF-I locally in bone in adult/old mice affects the bone phenotype. Adult tamoxifen-inducible inactivation of IGF-I using a CAGG-CreER mouse model (inducible IGF-IKO mice) substantially reduced IGF-I expression in bone (-55%) but not in liver. Serum IGF-I and body weight were unchanged. We used this inducible mouse model to assess the effect of local IGF-I on the skeleton in adult male mice, avoiding confounding developmental effects. After tamoxifen-induced inactivation of the IGF-I gene at 9 months of age, the skeletal phenotype was determined at 14 months of age. Computed tomography analyses of tibia revealed that the mid-diaphyseal cortical periosteal and endosteal circumferences and calculated bone strength parameters were decreased in inducible IGF-IKO mice compared with controls. Furthermore, 3-point bending showed reduced tibia cortical bone stiffness in inducible IGF-IKO mice. In contrast, the tibia and vertebral trabecular bone volume fraction was unchanged. In conclusion, inactivation of IGF-I in cortical bone with unchanged liver-derived IGF-I in older male mice resulted in reduced radial growth of cortical bone. This suggests that not only circulating IGF-I but also locally derived IGF-I regulates the cortical bone phenotype in older mice.
Collapse
Affiliation(s)
- Johan Svensson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
| | - Klara Sjögren
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
| | - Lina Lawenius
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
| | - Antti Koskela
- Department of Anatomy and Cell Biology, Institute of Cancer Research and Translational Medicine, Medical Research Center, University of Oulu, 90014 Oulu, Finland
| | - Juha Tuukkanen
- Department of Anatomy and Cell Biology, Institute of Cancer Research and Translational Medicine, Medical Research Center, University of Oulu, 90014 Oulu, Finland
| | - Karin H Nilsson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
| | - Sofia Movérare-Skrtic
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
| |
Collapse
|
6
|
Choi RB, Hoggatt AM, Horan DJ, Rogers EZ, Loots GG, Robling AG. Sostdc1 Suppression in the Absence of Sclerostin Potentiates Anabolic Action of Cortical Bone in Mice. J Bone Miner Res 2023; 38:765-774. [PMID: 36891756 PMCID: PMC10830127 DOI: 10.1002/jbmr.4798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/18/2023] [Accepted: 03/02/2023] [Indexed: 03/10/2023]
Abstract
The development of Wnt-based osteoanabolic agents has progressed rapidly in recent years, given the potent effects of Wnt modulation on bone homeostasis. Simultaneous pharmacologic inhibition of the Wnt antagonists sclerostin and Dkk1 can be optimized to create potentiated effects in the cancellous bone compartment. We looked for other candidates that might be co-inhibited along with sclerostin to potentiate the effects in the cortical compartment. Sostdc1 (Wise), like sclerostin and Dkk1, also binds and inhibits Lrp5/6 coreceptors to impair canonical Wnt signaling, but Sostdc1 has greater effects in the cortical bone. To test this concept, we deleted Sostdc1 and Sost from mice and measured the skeletal effects in cortical and cancellous compartments individually. Sost deletion alone produced high bone mass in all compartments, whereas Sostdc1 deletion alone had no measurable effects on either envelope. Mice with codeletion of Sostdc1 and Sost had high bone mass and increased cortical properties (bone mass, formation rates, mechanical properties), but only among males. Combined administration of sclerostin antibody and Sostdc1 antibody in wild-type female mice produced potentiation of cortical bone gain despite no effect of Sostdc1 antibody alone. In conclusion, Sostdc1 inhibition/deletion can work in concert with sclerostin deficiency to improve cortical bone properties. © 2023 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
Collapse
Affiliation(s)
- Roy B. Choi
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - April M. Hoggatt
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Daniel J. Horan
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Emily Z. Rogers
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Gabriela G. Loots
- Department of Orthopaedic Surgery, School of Medicine, UC Davis Health, Sacramento, CA, USA
| | - Alexander G. Robling
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
- Richard L. Roudebush Veterans Affairs Medical Center, Indianapolis, IN, USA
- Department of Biomedical Engineering, Indiana University–Purdue University at Indianapolis, Indianapolis, IN, USA
- Indiana Center for Musculoskeletal Health, Indianapolis, IN, USA
| |
Collapse
|
7
|
Nebot E, Martínez R, Kapravelou G, Sánchez C, Llopis J, Aranda P, Porres JM, López-Jurado M, Pietschmann P. Combination of Caloric Restriction and a Mixed Training Protocol as an Effective Strategy to Counteract the Deleterious Effects in Trabecular Bone Microarchitecture Caused by a Diet-Induced Obesity in Sprague Dawley Rats. Nutrients 2022; 14:nu14183672. [PMID: 36145048 PMCID: PMC9504808 DOI: 10.3390/nu14183672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/16/2022] [Accepted: 08/19/2022] [Indexed: 11/16/2022] Open
Abstract
The association of obesity with changes in bone mass is not clear. Obese individuals tend to have an increased bone mineral density, but other studies have shown that obesity is a major risk factor for fractures. The mechanisms of bone response during a weight loss therapy as well as the possible osteoprotective effect of exercise should be analyzed. The aim of this study was to test the effects of a weight-loss program based on the combination of caloric restriction and/or a mixed training protocol on different parameters of bone morphology and functionality in a DIO rat model. Three stages were established over a 21-week period (obesity induction 0–12 w, weight loss intervention 12–15 w, weight maintenance intervention 15–21 w) in 88 male Sprague Dawley rats. Bone microarchitecture, total mineral and elemental composition, and bone metabolism parameters were assessed. Weight loss interventions were associated to healthy changes in body composition, decreasing body fat and increasing lean body mass. On the other hand, obesity was related to a higher content of bone resorption and inflammatory markers, which was decreased by the weight control interventions. Caloric restriction led to marked changes in trabecular microarchitecture, with a significant decrease in total volume but no changes in bone volume (BV). In addition, the intervention diet caused an increase in trabeculae number and a decrease in trabecular spacing. The training protocol increased the pore diameter and reversed the changes in cortical porosity and density of BV induced by the high protein diet at diaphysis level. Regarding the weight-maintenance stage, diminished SMI values indicate the presence of more plate-like spongiosa in sedentary and exercise groups. In conclusion, the lifestyle interventions of caloric restriction and mixed training protocol implemented as weight loss strategies have been effective to counteract some of the deleterious effects caused by a dietary induction of obesity, specifically in trabecular bone morphometric parameters as well as bone mineral content.
Collapse
Affiliation(s)
- Elena Nebot
- Department of Physiology, School of Medicine, Complutense University of Madrid, 28040 Madrid, Spain
| | - Rosario Martínez
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), University of Granada, Avda del Conocimiento s/n, 18100 Armilla, Spain
| | - Garyfallia Kapravelou
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), University of Granada, Avda del Conocimiento s/n, 18100 Armilla, Spain
| | - Cristina Sánchez
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), University of Granada, Avda del Conocimiento s/n, 18100 Armilla, Spain
| | - Juan Llopis
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), University of Granada, Avda del Conocimiento s/n, 18100 Armilla, Spain
| | - Pilar Aranda
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), University of Granada, Avda del Conocimiento s/n, 18100 Armilla, Spain
| | - Jesús M. Porres
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), University of Granada, Avda del Conocimiento s/n, 18100 Armilla, Spain
- Correspondence:
| | - María López-Jurado
- Department of Physiology, Institute of Nutrition and Food Technology (INyTA), Biomedical Research Center (CIBM), University of Granada, Avda del Conocimiento s/n, 18100 Armilla, Spain
| | - Peter Pietschmann
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria
| |
Collapse
|
8
|
Dudakovic A, Jerez S, Deosthale PJ, Denbeigh JM, Paradise CR, Gluscevic M, Zan P, Begun DL, Camilleri ET, Pichurin O, Khani F, Thaler R, Lian JB, Stein GS, Westendorf JJ, Plotkin LI, van Wijnen AJ. MicroRNA-101a enhances trabecular bone accrual in male mice. Sci Rep 2022; 12:13361. [PMID: 35922466 PMCID: PMC9349183 DOI: 10.1038/s41598-022-17579-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 07/27/2022] [Indexed: 11/09/2022] Open
Abstract
High-throughput microRNA sequencing was performed during differentiation of MC3T3-E1 osteoblasts to develop working hypotheses for specific microRNAs that control osteogenesis. The expression data show that miR-101a, which targets the mRNAs for the epigenetic enzyme Ezh2 and many other proteins, is highly upregulated during osteoblast differentiation and robustly expressed in mouse calvaria. Transient elevation of miR-101a suppresses Ezh2 levels, reduces tri-methylation of lysine 27 in histone 3 (H3K27me3; a heterochromatic mark catalyzed by Ezh2), and accelerates mineralization of MC3T3-E1 osteoblasts. We also examined skeletal phenotypes of an inducible miR-101a transgene under direct control of doxycycline administration. Experimental controls and mir-101a over-expressing mice were exposed to doxycycline in utero and postnatally (up to 8 weeks of age) to maximize penetrance of skeletal phenotypes. Male mice that over-express miR-101a have increased total body weight and longer femora. MicroCT analysis indicate that these mice have increased trabecular bone volume fraction, trabecular number and trabecular thickness with reduced trabecular spacing as compared to controls. Histomorphometric analysis demonstrates a significant reduction in osteoid volume to bone volume and osteoid surface to bone surface. Remarkably, while female mice also exhibit a significant increase in bone length, no significant changes were noted by microCT (trabecular bone parameters) and histomorphometry (osteoid parameters). Hence, miR-101a upregulation during osteoblast maturation and the concomitant reduction in Ezh2 mediated H3K27me3 levels may contribute to the enhanced trabecular bone parameters in male mice. However, the sex-specific effect of miR-101a indicates that more intricate epigenetic mechanisms mediate physiological control of bone formation and homeostasis.
Collapse
Affiliation(s)
- Amel Dudakovic
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA.
- Department of Biochemistry & Molecular Biology, Mayo Clinic, Rochester, MN, USA.
| | - Sofia Jerez
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Padmini J Deosthale
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Janet M Denbeigh
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Christopher R Paradise
- Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, MN, USA
- Center for Regenerative Medicine, Mayo Clinic, Rochester, MN, USA
| | - Martina Gluscevic
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
- Center for Regenerative Medicine, Mayo Clinic, Rochester, MN, USA
| | - Pengfei Zan
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
- Department of Orthopedic Surgery, School of Medicine, Second Affiliated Hospital of Zhejiang University, Hangzhou, China
- Department of Orthopedic Surgery, School of Medicine, Shanghai Tenth People's Hospital Affiliated to Tongji University, Shanghai, China
| | - Dana L Begun
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | | | - Oksana Pichurin
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Farzaneh Khani
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Roman Thaler
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - Jane B Lian
- Department of Biochemistry, University of Vermont, Burlington, VT, USA
| | - Gary S Stein
- Department of Biochemistry, University of Vermont, Burlington, VT, USA
| | - Jennifer J Westendorf
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
- Department of Biochemistry & Molecular Biology, Mayo Clinic, Rochester, MN, USA
| | - Lilian I Plotkin
- Department of Anatomy, Cell Biology & Physiology, Indiana University School of Medicine, Indianapolis, IN, USA.
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA.
- Richard L Roudebush VA Medical Center, Indianapolis, IN, USA.
| | | |
Collapse
|
9
|
Lademann F, Tsourdi E, Hofbauer LC, Rauner M. Bone cell-specific deletion of thyroid hormone transporter Mct8 distinctly regulates bone volume in young versus adult male mice. Bone 2022; 159:116375. [PMID: 35240348 DOI: 10.1016/j.bone.2022.116375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 12/23/2022]
Abstract
Thyroid hormones are critical regulators of bone metabolism. Their cellular import is guided through transporter proteins, including the monocarboxylate transporter 8 (MCT8). Conditional Mct8 knockout in osteoblast and osteoclast precursors leads to trabecular bone gain in 12-week-old male mice. Given that thyroid hormones regulate both skeletal development and bone maintenance, we investigated the effect of bone cell-specific Mct8 deletion in 6-week-old (young) and 24-week-old (adult) male mice. Mct8 ablation in osteoclast precursors led to trabecular bone gain at the spine in 6-week-old animals compared to age-matched controls, whereas adult animals displayed a shift towards trabecular bone loss in both femur and vertebra. Mct8 deficiency in osteoprogenitors increased osteoblast numbers and trabecular bone mass at the spine of young mice, without skeletal differences between adult knockout mice and littermate controls. In contrast, young mice lacking Mct8 in late osteoblasts/osteocytes exhibited lower trabecular bone volume at the spine and femur compared to respective controls, but no differences were detected at 24 weeks of age. In vitro studies of osteoblasts with Dmp1-Cre promotor driven Mct8 deletion showed no significant alterations of osteogenic marker gene expression and mineralization capacity suggesting that MCT8 is not crucial for osteoblast maturation. Overall, we observed mild effects with conditional Mct8 knockout on bone microarchitecture and bone turnover especially during growth implying a secondary role for MCT8 as a thyroid hormone transporter in bone.
Collapse
Affiliation(s)
- Franziska Lademann
- Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, Germany
| | - Elena Tsourdi
- Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, Germany
| | - Lorenz C Hofbauer
- Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, Germany
| | - Martina Rauner
- Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, Germany.
| |
Collapse
|
10
|
Nilsson KH, Wu J, Gustafsson KL, El Shahawy M, Koskela A, Tuukkanen J, Tuckermann J, Henning P, Lerner UH, Ohlsson C, Movérare-Skrtic S. Estradiol and RSPO3 regulate vertebral trabecular bone mass independent of each other. Am J Physiol Endocrinol Metab 2022; 322:E211-E218. [PMID: 35068191 PMCID: PMC8896994 DOI: 10.1152/ajpendo.00383.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Osteoporosis is an age-dependent serious skeletal disease that leads to great suffering for the patient and high social costs, especially as the global population reaches higher age. Decreasing estrogen levels after menopause result in a substantial bone loss and increased fracture risk, whereas estrogen treatment improves bone mass in women. RSPO3, a secreted protein that modulates WNT signaling, increases trabecular bone mass and strength in the vertebrae of mice, and is associated with trabecular density and risk of distal forearm fractures in humans. The aim of the present study was to determine if RSPO3 is involved in the bone-sparing effect of estrogens. We first observed that estradiol (E2) treatment increases RSPO3 expression in bone of ovariectomized (OVX) mice, supporting a possible role of RSPO3 in the bone-sparing effect of estrogens. As RSPO3 is mainly expressed by osteoblasts in the bone, we used a mouse model devoid of osteoblast-derived RSPO3 (Runx2-creRspo3flox/flox mice) to determine if RSPO3 is required for the bone-sparing effect of E2 in OVX mice. We confirmed that osteoblast-specific RSPO3 inactivation results in a substantial reduction in trabecular bone mass and strength in the vertebrae. However, E2 increased vertebral trabecular bone mass and strength similarly in mice devoid of osteoblast-derived RSPO3 and control mice. Unexpectedly, osteoblast-derived RSPO3 was needed for the full estrogenic response on cortical bone thickness. In conclusion, although osteoblast-derived RSPO3 is a crucial regulator of vertebral trabecular bone, it is required for a full estrogenic effect on cortical, but not trabecular, bone in OVX mice. Thus, estradiol and RSPO3 regulate vertebral trabecular bone mass independent of each other.NEW & NOTEWORTHY Osteoblast-derived RSPO3 is known to be a crucial regulator of vertebral trabecular bone. Our new findings show that RSPO3 and estrogen regulate trabecular bone independent of each other, but that RSPO3 is necessary for a complete estrogenic effect on cortical bone.
Collapse
Affiliation(s)
- Karin H Nilsson
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Jianyao Wu
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Karin L Gustafsson
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Maha El Shahawy
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Antti Koskela
- Department of Anatomy and Cell Biology, Faculty of Medicine, Institute of Cancer Research and Translational Medicine, University of Oulu, Oulu, Finland
| | - Juha Tuukkanen
- Department of Anatomy and Cell Biology, Faculty of Medicine, Institute of Cancer Research and Translational Medicine, University of Oulu, Oulu, Finland
| | - Jan Tuckermann
- Institute of Comparative Molecular Endocrinology (CME), University of Ulm, Ulm, Germany
| | - Petra Henning
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Ulf H Lerner
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Claes Ohlsson
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Region Västra Götaland, Department of Drug Treatment, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Sofia Movérare-Skrtic
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| |
Collapse
|
11
|
Dai B, Xu J, Li X, Huang L, Hopkins C, Wang H, Yao H, Mi J, Zheng L, Wang J, Tong W, Chow DHK, Li Y, He X, Hu P, Chen Z, Zu H, Li Y, Yao Y, Jiang Q, Qin L. Macrophages in epididymal adipose tissue secrete osteopontin to regulate bone homeostasis. Nat Commun 2022; 13:427. [PMID: 35058428 PMCID: PMC8776868 DOI: 10.1038/s41467-021-27683-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 11/04/2021] [Indexed: 12/21/2022] Open
Abstract
Epididymal white adipose tissue (eWAT) secretes an array of cytokines to regulate the metabolism of organs and tissues in high-fat diet (HFD)-induced obesity, but its effects on bone metabolism are not well understood. Here, we report that macrophages in eWAT are a main source of osteopontin, which selectively circulates to the bone marrow and promotes the degradation of the bone matrix by activating osteoclasts, as well as modulating bone marrow-derived macrophages (BMDMs) to engulf the lipid droplets released from adipocytes in the bone marrow of mice. However, the lactate accumulation induced by osteopontin regulation blocks both lipolysis and osteoclastogenesis in BMDMs by limiting the energy regeneration by ATP6V0d2 in lysosomes. Both surgical removal of eWAT and local injection of either clodronate liposomes (for depleting macrophages) or osteopontin-neutralizing antibody show comparable amelioration of HFD-induced bone loss in mice. These results provide an avenue for developing therapeutic strategies to mitigate obesity-related bone disorders.
Collapse
Affiliation(s)
- Bingyang Dai
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Jiankun Xu
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Xu Li
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Le Huang
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Chelsea Hopkins
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Honglian Wang
- Research Center for Integrated Medicine, Affiliated Traditional Medicine Hospital of Southwest Medical University, 646000, Luzhou, Sichuan, China
| | - Hao Yao
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Jie Mi
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Lizhen Zheng
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Jiali Wang
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Wenxue Tong
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Dick Ho-Kiu Chow
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Ye Li
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Xuan He
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Peijie Hu
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
| | - Ziyi Chen
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Haiyue Zu
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Yixuan Li
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Yao Yao
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Qing Jiang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Sports Medicine and Adult Reconstructive Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Ling Qin
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.
| |
Collapse
|
12
|
Sahbani K, Cardozo CP, Bauman WA, Tawfeek HA. Inhibition of TGF-β Signaling Attenuates Disuse-induced Trabecular Bone Loss After Spinal Cord Injury in Male Mice. Endocrinology 2022; 163:bqab230. [PMID: 34791098 DOI: 10.1210/endocr/bqab230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Indexed: 11/19/2022]
Abstract
Bone loss is one of the most common complications of immobilization after spinal cord injury (SCI). Whether transforming growth factor (TGF)-β signaling plays a role in SCI-induced disuse bone loss has not been determined. Thus, 16-week-old male mice underwent sham or spinal cord contusion injury to cause complete hindlimb paralysis. Five days later, 10 mg/kg/day control (IgG) or anti-TGF-β1,2,3 neutralizing antibody (1D11) was administered twice weekly for 4 weeks. Femurs were examined by micro-computed tomography (micro-CT) scanning and histology. Bone marrow (BM) supernatants were analyzed by enzyme-linked immunosorbent assay for levels of procollagen type 1 intact N-terminal propeptide (P1NP), tartrate-resistant acid phosphatase (TRAcP-5b), receptor activator of nuclear factor-kappa B ligand (RANKL), osteoprotegerin (OPG), and prostaglandin E2 (PGE2). Distal femoral micro-CT analysis showed that SCI-1D11 mice had significantly (P < .05) attenuated loss of trabecular fractional bone volume (123% SCI-1D11 vs 69% SCI-IgG), thickness (98% vs 81%), and connectivity (112% vs 69%) and improved the structure model index (2.1 vs 2.7). Histomorphometry analysis revealed that osteoclast numbers were lower in the SCI-IgG mice than in sham-IgG control. Biochemically, SCI-IgG mice had higher levels of P1NP and PGE2 but similar TRAcP-5b and RANKL/OPG ratio to the sham-IgG group. The SCI-1D11 group exhibited higher levels of P1NP but similar TRAcP-5b, RANKL/OPG ratio, and PGE2 to the sham-1D11 group. Furthermore, 1D11 treatment prevented SCI-induced hyperphosphorylation of tau protein in osteocytes, an event that destabilizes the cytoskeleton. Together, inhibition of TGF-β signaling after SCI protects trabecular bone integrity, likely by balancing bone remodeling, inhibiting PGE2 elevation, and preserving the osteocyte cytoskeleton.
Collapse
Affiliation(s)
- Karim Sahbani
- National Center for the Medical Consequences of Spinal Cord Injury, James J Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA
- Bronx Veterans Medical Research Foundation, Bronx, NY 10468, USA
| | - Christopher P Cardozo
- National Center for the Medical Consequences of Spinal Cord Injury, James J Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA
- Bronx Veterans Medical Research Foundation, Bronx, NY 10468, USA
- Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Rehabilitation Medicine and Human Performance, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Mount Sinai Institute for Systems Biomedicine, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - William A Bauman
- National Center for the Medical Consequences of Spinal Cord Injury, James J Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA
- Bronx Veterans Medical Research Foundation, Bronx, NY 10468, USA
- Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Department of Rehabilitation Medicine and Human Performance, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Mount Sinai Institute for Systems Biomedicine, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Hesham A Tawfeek
- National Center for the Medical Consequences of Spinal Cord Injury, James J Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA
- Bronx Veterans Medical Research Foundation, Bronx, NY 10468, USA
- Department of Medicine, The Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| |
Collapse
|
13
|
Lademann F, Mayerl S, Tsourdi E, Verrey F, Leitch VD, Williams GR, Bassett JHD, Hofbauer LC, Heuer H, Rauner M. The Thyroid Hormone Transporter MCT10 Is a Novel Regulator of Trabecular Bone Mass and Bone Turnover in Male Mice. Endocrinology 2022; 163:bqab218. [PMID: 34669927 PMCID: PMC8598386 DOI: 10.1210/endocr/bqab218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Indexed: 11/19/2022]
Abstract
Thyroid hormones (TH) are essential for skeletal development and adult bone homeostasis. Their bioavailability is determined by specific transporter proteins at the cell surface. The TH-specific transporter monocarboxylate transporter 8 (MCT8) was recently reported as a regulator of bone mass in mice. Given that high systemic triiodothyronine (T3) levels in Mct8 knockout (KO) mice are still able to cause trabecular bone loss, alternative TH transporters must substitute for MCT8 function in bone. In this study, we analyzed the skeletal phenotypes of male Oatp1c1 KO and Mct10 KO mice, which are euthyroid, and male Mct8/Oatp1c1 and Mct8/Mct10 double KO mice, which have elevated circulating T3 levels, to unravel the role of TH transport in bone. MicroCT analysis showed no significant trabecular bone changes in Oatp1c1 KO mice at 4 weeks and 16 weeks of age compared with wild-type littermate controls, whereas 16-week-old Mct8/Oatp1c1 double KO animals displayed trabecular bone loss. At 12 weeks, Mct10 KO mice, but not Mct8/Mct10 double KO mice, had decreased trabecular femoral bone volume with reduced osteoblast numbers. By contrast, lack of Mct10 in 24-week-old mice led to trabecular bone gain at the femur with increased osteoblast numbers and decreased osteoclast numbers whereas Mct8/Mct10 double KO did not alter bone mass. Neither Mct10 nor Mct8/Mct10 deletion affected vertebral bone structures at both ages. In vitro, osteoblast differentiation and activity were impaired by Mct10 and Mct8/Mct10-deficiency. These data demonstrate that MCT10, but not OATP1C1, is a site- and age-dependent regulator of bone mass and turnover in male mice.
Collapse
Affiliation(s)
- Franziska Lademann
- Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, D-01307 Dresden, Germany
| | - Steffen Mayerl
- Department of Endocrinology, University of Duisburg-Essen, University Hospital Essen, D-45147 Essen, Germany
| | - Elena Tsourdi
- Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, D-01307 Dresden, Germany
| | - Francois Verrey
- Institute of Physiology, University of Zurich, CH-8057 Zurich, Switzerland
| | - Victoria D Leitch
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK
| | - Graham R Williams
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK
| | - J H Duncan Bassett
- Molecular Endocrinology Laboratory, Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK
| | - Lorenz C Hofbauer
- Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, D-01307 Dresden, Germany
| | - Heike Heuer
- Department of Endocrinology, University of Duisburg-Essen, University Hospital Essen, D-45147 Essen, Germany
| | - Martina Rauner
- Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, D-01307 Dresden, Germany
| |
Collapse
|
14
|
Shim KS, Gu DR, Hwang YH, Yang H, Ryuk JA, Ha H. Water Extract of Fritillariae thunbergii Bulbus Inhibits RANKL-Mediated Osteoclastogenesis and Ovariectomy-Induced Trabecular Bone Loss. Molecules 2021; 27:molecules27010169. [PMID: 35011398 PMCID: PMC8746409 DOI: 10.3390/molecules27010169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/20/2021] [Accepted: 12/24/2021] [Indexed: 12/03/2022] Open
Abstract
Fritillariae thunbergii bulbus has been widely used to treat symptoms of coughs and airway congestion in the chest due to pathological colds and damp phlegm in traditional Chinese medicine. Despite its long history of traditional use, its pharmacological activities on osteoclastogenesis and osteoporosis have not been evaluated. This study investigated the effects of the water extract of Fritillariae thunbergii bulbus (WEFT) on osteoclast differentiation in bone marrow-derived macrophage cells and on ovariectomy (OVX)-induced osteoporosis in mice. We found that WEFT significantly inhibited osteoclastogenesis by downregulating the receptor activator of the NF-κB ligand (RANKL) signaling-induced nuclear factor of activated T-cells cytoplasmic 1 (NFATc1) expression. In an OVX-induced osteoporosis model, WEFT significantly prevented the OVX-induced trabecular loss of femurs, accompanied by a reduction in fat accumulation in the bone marrow and liver. In addition, WEFT significantly prevented weight gain and gonadal fat gain without recovering uterine atrophy. Using ultrahigh-performance liquid chromatography-tandem mass spectrometry, seven alkaloids (peimisine glucoside, yibeissine, peiminoside, sipeimine-glucoside, peimisine, peimine, and peiminine) were identified in WEFT. The results of this study suggest that WEFT can be a potential pharmacological candidate to reduce menopausal osteoporosis and menopause-related symptoms, such as fat accumulation.
Collapse
Affiliation(s)
- Ki-Shuk Shim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Daejeon 34054, Korea; (K.-S.S.); (D.-R.G.); (Y.-H.H.); (H.Y.); (J.-A.R.)
| | - Dong-Ryun Gu
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Daejeon 34054, Korea; (K.-S.S.); (D.-R.G.); (Y.-H.H.); (H.Y.); (J.-A.R.)
| | - Youn-Hwan Hwang
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Daejeon 34054, Korea; (K.-S.S.); (D.-R.G.); (Y.-H.H.); (H.Y.); (J.-A.R.)
- Korean Convergence Medicine Major KIOM, University of Science & Technology (UST), Daejeon 34054, Korea
| | - Hyun Yang
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Daejeon 34054, Korea; (K.-S.S.); (D.-R.G.); (Y.-H.H.); (H.Y.); (J.-A.R.)
| | - Jin-Ah Ryuk
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Daejeon 34054, Korea; (K.-S.S.); (D.-R.G.); (Y.-H.H.); (H.Y.); (J.-A.R.)
| | - Hyunil Ha
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Daejeon 34054, Korea; (K.-S.S.); (D.-R.G.); (Y.-H.H.); (H.Y.); (J.-A.R.)
- Correspondence: ; Tel.: +82-42-868-9367
| |
Collapse
|
15
|
Tomaszewska E, Rudyk H, Świetlicka I, Hułas-Stasiak M, Donaldson J, Arczewska M, Muszyński S, Dobrowolski P, Puzio I, Kushnir V, Brezvyn O, Muzyka V, Kotsyumbas I. The Influence of Prenatal Fumonisin Exposure on Bone Properties, as well as OPG and RANKL Expression and Immunolocalization, in Newborn Offspring Is Sex and Dose Dependent. Int J Mol Sci 2021; 22:ijms222413234. [PMID: 34948030 PMCID: PMC8705866 DOI: 10.3390/ijms222413234] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/04/2021] [Accepted: 12/06/2021] [Indexed: 01/18/2023] Open
Abstract
The current study examined the effects of exposure of pregnant dams to fumonisins (FBs; FB1 and FB2), from the seventh day of pregnancy to parturition, on offspring bone metabolism and properties. The rats were randomly divided into three groups intoxicated with FBs at either 0, 60, or 90 mg/kg b.w. Body weight and bone length were affected by fumonisin exposure, irrespective of sex or dose, while the negative and harmful effects of maternal FBs’ exposure on bone mechanical resistance were sex and dose dependent. The immunolocalization of osteoprotegerin (OPG) and receptor activator of nuclear factor kappa-Β ligand (RANKL), in bone and articular cartilage, indicated that the observed bone effects resulted from the FB-induced alterations in bone metabolism, which were confirmed by the changes observed in the Western blot expression of OPG and RANKL. It was concluded that the negative effects of prenatal FB exposure on the general growth and morphometry of the offspring bones, as a result of the altered expression of proteins responsible for bone metabolism, were dose and sex dependent.
Collapse
Affiliation(s)
- Ewa Tomaszewska
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland;
- Correspondence: (E.T.); (I.Ś.)
| | - Halyna Rudyk
- State Scientific Research Control Institute of Veterinary Medicinal Products and Feed Additives, Donetska St. 11, 79000 Lviv, Ukraine; (H.R.); (V.K.); (O.B.); (V.M.); (I.K.)
| | - Izabela Świetlicka
- Department of Biophysics, Faculty of Environmental Biology, University of Life Sciences in Lublin, Akademicka St. 13, 20-950 Lublin, Poland; (M.A.); (S.M.)
- Correspondence: (E.T.); (I.Ś.)
| | - Monika Hułas-Stasiak
- Department of Functional Anatomy and Cytobiology, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, 19 Akademicka St., 20-033 Lublin, Poland; (M.H.-S.); (P.D.)
| | - Janine Donaldson
- Faculty of Health Sciences, School of Physiology, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa;
| | - Marta Arczewska
- Department of Biophysics, Faculty of Environmental Biology, University of Life Sciences in Lublin, Akademicka St. 13, 20-950 Lublin, Poland; (M.A.); (S.M.)
| | - Siemowit Muszyński
- Department of Biophysics, Faculty of Environmental Biology, University of Life Sciences in Lublin, Akademicka St. 13, 20-950 Lublin, Poland; (M.A.); (S.M.)
| | - Piotr Dobrowolski
- Department of Functional Anatomy and Cytobiology, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, 19 Akademicka St., 20-033 Lublin, Poland; (M.H.-S.); (P.D.)
| | - Iwona Puzio
- Department of Animal Physiology, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka St. 12, 20-950 Lublin, Poland;
| | - Volodymyr Kushnir
- State Scientific Research Control Institute of Veterinary Medicinal Products and Feed Additives, Donetska St. 11, 79000 Lviv, Ukraine; (H.R.); (V.K.); (O.B.); (V.M.); (I.K.)
| | - Oksana Brezvyn
- State Scientific Research Control Institute of Veterinary Medicinal Products and Feed Additives, Donetska St. 11, 79000 Lviv, Ukraine; (H.R.); (V.K.); (O.B.); (V.M.); (I.K.)
| | - Viktor Muzyka
- State Scientific Research Control Institute of Veterinary Medicinal Products and Feed Additives, Donetska St. 11, 79000 Lviv, Ukraine; (H.R.); (V.K.); (O.B.); (V.M.); (I.K.)
| | - Ihor Kotsyumbas
- State Scientific Research Control Institute of Veterinary Medicinal Products and Feed Additives, Donetska St. 11, 79000 Lviv, Ukraine; (H.R.); (V.K.); (O.B.); (V.M.); (I.K.)
| |
Collapse
|
16
|
Liu FX, Tan F, Fan QL, Tong WW, Teng ZL, Ye SM, Li X, Zhang MY, Chai Y, Mai CY. Zuogui Wan improves trabecular bone microarchitecture in ovariectomy-induced osteoporosis rats by regulating orexin-A and orexin receptor. J TRADIT CHIN MED 2021; 41:927-934. [PMID: 34939389 DOI: 10.19852/j.cnki.jtcm.20210903.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To investigate the protective effects of Zuogui Wan (ZGW) on bone loss induced by ovariectomy (OVX) and its mechanism via orexin-A and orexin receptors in the osteoporosis rat model. METHODS Fifty Sprague-Dawley female rats were randomly divided into sham-operated (sham) group and four OVX subgroups. Rats subjected to sham and OVX were treated with the vehicle (OVX, 1 mL/100 g weight, n = 10), 17β-estradiol (E2, 50 μg*kg-1*d-1), and ZGW at the doses of 2.3 (ZGW-L) and 4.6 (ZGW-H) g/kg/day lyophilized powder daily for 3 months, respectively. The serum biochemical parameters of 17β-estrogen (17β-E2), tartrate-resistant acid phosphatase (TRACP-5b) and bone alkaline phosphatase (BALP) were measured by enzyme-linked immunosorbent assay. Hematoxylin-eosin staining was used to detect the changes in the morphological structure in bones. Microcomputed tomography was used to evaluate the bone mineral density and microarchitecture of the distal femur. The gene or protein expression of orexin-A, orexin receptor 1 (OX1R), orexin receptor 2 (OX2R), osteoprotegerin (OPG) and receptor activator of nuclear factor-κB ligand (RANKL) were assayed by either quantitative polymerase chain reaction or Western blot analysis. RESULTS Compared with the OVX group, ZGW could reduce the serum level of TRACP-5b and increased the serum levels of BALP and17β-E2 (P < 0.01). Meanwhile, ZGW could prevent bone loss and improved bone trabecular microarchitecture by increasing the trabeculae structure thickness and trabecular number, and arranging the trabeculae structure properly. Compared with the OVX group, it was upregulated for the orexin-A and OX2R mRNA or protein expression from the hypothalamus and tibiae, and OPG in the tibiae of ZGW groups (P < 0.01, < 0.05), while downregulated for the OX1R mRNA and protein expression in the tibiae and hypothalamus and RANKL from the tibiae (P < 0.01). CONCLUSION ZGW exhibited a protective effect for PMOP that may be mediated via orexin-A and orexin receptors regulation.
Collapse
Affiliation(s)
- Fei-Xiang Liu
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| | - Feng Tan
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| | - Qiao-Ling Fan
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| | - Wei-Wei Tong
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| | - Zhan-Li Teng
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| | - Su-Min Ye
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| | - Xing Li
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| | - Ming-Yue Zhang
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| | - Yi Chai
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| | - Chong-Ying Mai
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Traditional Medicine, Nanjing 210023, China
| |
Collapse
|
17
|
Freid R, Hussein AI, Schlezinger JJ. Tributyltin protects against ovariectomy-induced trabecular bone loss in C57BL/6J mice with an attenuated effect in high fat fed mice. Toxicol Appl Pharmacol 2021; 431:115736. [PMID: 34619157 PMCID: PMC8545923 DOI: 10.1016/j.taap.2021.115736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 09/25/2021] [Accepted: 09/29/2021] [Indexed: 11/27/2022]
Abstract
Risk factors for poor bone quality include estrogen loss at menopause, a high fat diet and exposures to drugs/chemicals that activate peroxisome proliferator activated receptor gamma (PPARγ). We previously reported that the PPARγ and retinoid X receptor dual ligand, tributyltin (TBT), repressed periosteal bone formation but enhanced trabecular bone formation in vivo. Here, we examined the interaction of diet, ovariectomy (OVX) and TBT exposure on bone structure. C57BL/6J mice underwent either sham surgery or OVX at 10 weeks of age. At 12 weeks of age, they were placed on a low (10% kcal) or high (45% kcal) fat, sucrose-matched diet and treated with vehicle or TBT (1 or 5 mg/kg) for 14 weeks. OVX increased body weight gain in mice on either diet. TBT enhanced body weight gain in intact mice fed a high fat diet, but decreased weight gain in OVX mice. Elemental tin concentrations increased dose-dependently in bone. TBT had marginal effects on cortical and trabecular bone in intact mice fed either diet. OVX caused a reduction in cortical and trabecular bone, regardless of diet. In high fat fed OVX mice, TBT further reduced cortical thickness, bone area and total area. Interestingly, TBT protected against OVX-induced trabecular bone loss in low fat fed mice. The protective effect of TBT was nullified by the high fat. These results show that TBT protects against trabecular bone loss, even in the presence of a strongly resorptive environment, at an even lower level of exposure than we showed repressed homeostatic resorption.
Collapse
Affiliation(s)
- Rachel Freid
- Environmental Health, Boston University School of Public Health, USA
| | - Amira I Hussein
- Orthopaedic Surgery, Boston University School of Medicine, Boston, MA 02118, USA
| | | |
Collapse
|
18
|
Yan L, Nielsen FH, Sundaram S, Cao J. Voluntary running of defined distances alters bone microstructure in C57BL/6 mice fed a high-fat diet. Appl Physiol Nutr Metab 2021; 46:1337-1344. [PMID: 34000207 DOI: 10.1139/apnm-2021-0061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Obesity increases the risk for pathological conditions such as bone loss. On the other hand, physical exercise reduces body adiposity. To test the hypothesis that physical activity improves bone quality, we evaluated voluntary running of defined distances on trabecular and cortical microstructure in mice fed a high-fat diet (HFD). Sedentary mice were fed the standard AIN93G diet or the HFD. Mice fed the HFD remained sedentary or were assigned to unrestricted running or 75%, 50%, and 25% of unrestricted running with an average running activity at 8.3, 6.3, 4.2, and 2.1 km per day, respectively. The bone structural differences found in sedentary mice were that HFD, compared with the AIN93G diet, resulted in a lower bone volume fraction (BV/TV) and a higher structure model index (SMI) in vertebrae. Running had a greater effect on trabecular microstructure in femurs than in vertebrae; the decrease in SMI and an increase in trabecular thickness (Tb.Th) were in dose-dependent manners. Running was positively correlated with BV/TV and Tb.Th and inversely correlated with SMI in femurs. The HFD increased plasma concentrations of tartrate-resistant acid phosphatase 5b, a marker of bone resorption, in sedentary mice, while running decreased it in a dose-dependent manner. The findings show that voluntary running improves bone quality in young adult mice fed an HFD. Novelty: The high-fat diet alters bone microstructure by increasing bone resorption. Quantitative voluntary running improves bone microstructure through its attenuation of bone resorption in mice fed a high-fat diet.
Collapse
Affiliation(s)
- Lin Yan
- U.S. Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58202, USA
- U.S. Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58202, USA
| | - Forrest H Nielsen
- U.S. Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58202, USA
- U.S. Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58202, USA
| | - Sneha Sundaram
- U.S. Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58202, USA
- U.S. Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58202, USA
| | - Jay Cao
- U.S. Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58202, USA
- U.S. Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58202, USA
| |
Collapse
|
19
|
Nilsson KH, Henning P, El Shahawy M, Nethander M, Andersen TL, Ejersted C, Wu J, Gustafsson KL, Koskela A, Tuukkanen J, Souza PPC, Tuckermann J, Lorentzon M, Ruud LE, Lehtimäki T, Tobias JH, Zhou S, Lerner UH, Richards JB, Movérare-Skrtic S, Ohlsson C. RSPO3 is important for trabecular bone and fracture risk in mice and humans. Nat Commun 2021; 12:4923. [PMID: 34389713 PMCID: PMC8363747 DOI: 10.1038/s41467-021-25124-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 07/19/2021] [Indexed: 11/22/2022] Open
Abstract
With increasing age of the population, countries across the globe are facing a substantial increase in osteoporotic fractures. Genetic association signals for fractures have been reported at the RSPO3 locus, but the causal gene and the underlying mechanism are unknown. Here we show that the fracture reducing allele at the RSPO3 locus associate with increased RSPO3 expression both at the mRNA and protein levels, increased trabecular bone mineral density and reduced risk mainly of distal forearm fractures in humans. We also demonstrate that RSPO3 is expressed in osteoprogenitor cells and osteoblasts and that osteoblast-derived RSPO3 is the principal source of RSPO3 in bone and an important regulator of vertebral trabecular bone mass and bone strength in adult mice. Mechanistic studies revealed that RSPO3 in a cell-autonomous manner increases osteoblast proliferation and differentiation. In conclusion, RSPO3 regulates vertebral trabecular bone mass and bone strength in mice and fracture risk in humans.
Collapse
Affiliation(s)
- Karin H Nilsson
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Petra Henning
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Maha El Shahawy
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Faculty of Dentistry, Department of Oral Biology, Minia University, Minia, Egypt
| | - Maria Nethander
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Thomas Levin Andersen
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark
- Department of Pathology, Odense University Hospital, Odense, Denmark
| | - Charlotte Ejersted
- Department of Endocrinology, Odense University Hospital, Odense, Denmark
| | - Jianyao Wu
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Karin L Gustafsson
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Antti Koskela
- Department of Anatomy and Cell Biology, Faculty of Medicine, Institute of Cancer Research and Translational Medicine, University of Oulu, Oulu, Finland
| | - Juha Tuukkanen
- Department of Anatomy and Cell Biology, Faculty of Medicine, Institute of Cancer Research and Translational Medicine, University of Oulu, Oulu, Finland
| | - Pedro P C Souza
- Innovation in Biomaterials Laboratory, Faculty of Dentistry, Federal University of Goiás, Goiâna, Brazil
| | - Jan Tuckermann
- Institute of Comparative Molecular Endocrinology (CME), University of Ulm, Ulm, Germany
| | - Mattias Lorentzon
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
- Region Västra Götaland, Department of Geriatric Medicine, Sahlgrenska University Hospital, Mölndal, Sweden
- Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, VIC, Australia
| | - Linda Engström Ruud
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories, Tampere, Finland
- Finnish Cardiovascular Research Center - Tampere, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Jon H Tobias
- Musculoskeletal Research Unit, Translational Health Sciences, and Medical Research Council Integrative Epidemiology Unit, Bristol Medical School, University of Bristol, Bristol, UK
| | - Sirui Zhou
- Department of Medicine, Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, McGill University, Montréal, QC, Canada
- Department of Human Genetics, McGill University, Montréal, QC, Canada
| | - Ulf H Lerner
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - J Brent Richards
- Department of Medicine, Centre for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, McGill University, Montréal, QC, Canada
- Department of Human Genetics, McGill University, Montréal, QC, Canada
| | - Sofia Movérare-Skrtic
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.
| | - Claes Ohlsson
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden.
- Region Västra Götaland, Department of Drug Treatment, Sahlgrenska University Hospital, Gothenburg, Sweden.
| |
Collapse
|
20
|
Nowakowska-Płaza A, Wroński J, Sudoł-Szopińska I, Głuszko P. Clinical Utility of Trabecular Bone Score (TBS) in Fracture Risk Assessment of Patients with Rheumatic Diseases Treated with Glucocorticoids. Horm Metab Res 2021; 53:499-503. [PMID: 34384106 DOI: 10.1055/a-1528-7261] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Chronic glucocorticoid therapy is associated with osteoporosis and can cause fractures in up to 50% of patients. Increased risk of fractures in patients with glucocorticoid-induced osteoporosis does not result only from the decreased bone mineral density (BMD) but also bone microarchitecture deterioration. Trabecular bone score (TBS) is a method complementary to DXA, providing additional information about trabecular bone structure. The aim of this study was to assess the clinical utility of TBS in fracture risk assessment of patients treated with glucocorticoids. Patients with rheumatic diseases treated with glucocorticoids for at least 3 months were enrolled. All recruited patients underwent DXA with additional TBS assessment. We analyzed the frequency of osteoporosis and osteoporotic fractures and assessed factors that might be associated with the risk of osteoporotic fractures. A total of 64 patients were enrolled. TBS and TBS T-score values were significantly lower in patients with osteoporosis compared to patients without osteoporosis. Low energy fractures occurred in 19 patients. The disturbed bone microarchitecture was found in 30% of patients with fractures without osteoporosis diagnosis based on BMD. In the multivariate analysis, only TBS and age were significantly associated with the occurrence of osteoporotic fractures. TBS reflects the influence of glucocorticoid therapy on bone quality better than DXA measured BMD and provides an added value to DXA in identifying the group of patients particularly prone to fractures.
Collapse
Affiliation(s)
- Anna Nowakowska-Płaza
- Department of Rheumatology, National Institute of Geriatrics, Rheumatology, and Rehabilitation, Warsaw, Poland
| | - Jakub Wroński
- Department of Rheumatology, National Institute of Geriatrics, Rheumatology, and Rehabilitation, Warsaw, Poland
| | - Iwona Sudoł-Szopińska
- Department of Radiology, National Institute of Geriatrics, Rheumatology, and Rehabilitation, Warsaw, Poland
| | - Piotr Głuszko
- Department of Rheumatology, National Institute of Geriatrics, Rheumatology, and Rehabilitation, Warsaw, Poland
| |
Collapse
|
21
|
Kim JH, Shin H, Kim M, Kim S, Song K, Jung HS, Sohn Y. Solanum nigrum Line inhibits osteoclast differentiation and suppresses bone mineral density reduction in the ovariectomy‑induced osteoporosis model. Mol Med Rep 2021; 24:607. [PMID: 34184079 PMCID: PMC8240179 DOI: 10.3892/mmr.2021.12246] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 04/22/2021] [Indexed: 12/18/2022] Open
Abstract
Bone homeostasis is maintained by osteoclasts that absorb bone and osteoblasts that form bone tissue. Menopausal osteoporosis is a disease associated with aging and hormonal changes due to menopause causing abnormal activation of osteoclasts, resulting in a decrease in bone density. Existing treatments for osteoporosis have been reported to have serious side effects, such as jawbone necrosis and breast and uterine cancer; therefore, their use by patients is decreasing, whilst studies focusing on alternative treatments are increasingly popular. Solanum nigrum Line (SL) has been used as a medicinal plant that possesses several pharmacological effects, such as anti‑inflammatory and hepatotoxic protective effects. To the best of our knowledge, however, its effects on osteoporosis and osteoclasts have not been demonstrated previously. In the present study, the anti‑osteoporotic effect of SL was investigated using a postmenopausal model of osteoporosis in which Sprague‑Dawley rat ovaries were extracted. In addition, the inhibitory effects on osteoclast differentiation and function of SL was confirmed using an osteoclast model treated with receptor activator of NF‑κB ligand (RANKL) on murine RAW 264.7 macrophages. In vivo experiments showed that SL reduced the decrease in bone mineral density and improved changes in the morphological index of bone microstructure, such as trabecular number and separation. In addition, the number of tartrate resistant acid phosphatase‑positive cells in the femur and the expression levels of nuclear factor of activated T‑cells cytoplasmic 1 (NFATc1) and cathepsin K protein were inhibited. In vitro, SL suppressed RANKL‑induced osteoclast differentiation and bone resorption ability; this was mediated by NFATc1/c‑Fos, a key transcription factor involved in osteoclast differentiation, ultimately inhibiting expression of various osteoclast‑associated genes. These experimental results show that SL may be an alternative treatment for osteoporosis caused by abnormal activation of osteoclasts in the future.
Collapse
Affiliation(s)
- Jae-Hyun Kim
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Hwajeong Shin
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Minsun Kim
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Sangwoo Kim
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Kwangchan Song
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Hyuk-Sang Jung
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| | - Youngjoo Sohn
- Department of Anatomy, College of Korean Medicine, Kyung Hee University, Seoul 02-447, Republic of Korea
| |
Collapse
|
22
|
Yang T, Wang Q, Qu Y, Feng C, Li C, Yang Y, Sun Z, Alahmadi TA, Alharbi SA, Bao S. Protective effect of rhaponticin on ovariectomy-induced osteoporosis in rats. J Biochem Mol Toxicol 2021; 35:e22837. [PMID: 34227182 DOI: 10.1002/jbt.22837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/17/2021] [Accepted: 05/18/2021] [Indexed: 12/30/2022]
Abstract
Rhaponticin is a constituent isolated from numerous medicinal herbs. It has been reported earlier that rhaponticin possesses numerous biological effects like antiallergic, antidiabetic, hepatoprotective, and antithrombosis. The goal of this exploration was to scrutinize the therapeutic potential of rhaponticin on ovariectomy (OVX)-triggered osteoporosis in rats. Female Sprague Dawley rats were arbitrarily allocated to a sham-operated control group I, group II, which underwent OVX, and groups III and IV that underwent OVX were administered with rhaponticin (10 and 20 mg/kg). Rhaponticin was supplemented orally after 4 weeks of OVX and continued for about 16 weeks. Our findings exhibit that rhaponticin prevented the BMD diminution of femurs, induced by OVX, and protected the worsening of trabecular microarchitecture that are assisted through a noteworthy decline in skeletal remodeling as noticed through the diminished status of bone markers in a dose-dependent manner (10 and 20 mg/kg). OVX rats treated with rhaponticin efficiently enhanced body weight, lipid profiles, uterine index, bone turnover markers, inflammatory markers, and augmented the incidence of calcium in the OVX rats. Rhaponticin was established to restrain the functions of acid phosphatase, estradiol, and bone gla protein in OVX rats. Also, rhaponticin displayed some beneficial effects on histomorphometric and histopathological examination. It was observed that tabular area and thickness were reinstated in sham control and rhaponticin-treated OVX rats. We recognized that rhaponticin did not induce a damaging outcome on the skeletal organization of OVX rats. Moreover, we denote that rhaponticin can be an exceptional agent for the treatment and deal with associated bone diseases.
Collapse
Affiliation(s)
- Tiansong Yang
- Rehabilitation Medicine Department, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
- Department of Rehabilitation Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Shenzhen, China
| | - Qingyong Wang
- Graduate College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yuanyuan Qu
- Graduate College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Chuwen Feng
- Rehabilitation Medicine Department, The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, China
| | - Chaoran Li
- Graduate College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Yan Yang
- Graduate College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Zhongren Sun
- Graduate College, Heilongjiang University of Chinese Medicine, Harbin, China
| | - Tahani A Alahmadi
- Department of Pediatrics, College of Medicine and King Khalid University Hospital, Medical City, King Saud University, Riyadh, Saudi Arabia
| | - Sulaiman A Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Shengyong Bao
- Department of Rehabilitation Medicine, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, Shenzhen, China
| |
Collapse
|
23
|
Iwamoto R, Takahashi T, Yoshimi K, Imai Y, Koide T, Hara M, Ninomiya T, Nakamura H, Sayama K, Yukita A. Chemokine ligand 28 (CCL28) negatively regulates trabecular bone mass by suppressing osteoblast and osteoclast activities. J Bone Miner Metab 2021; 39:558-571. [PMID: 33721112 DOI: 10.1007/s00774-021-01210-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 01/26/2021] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Bone metabolism imbalances cause bone metabolism diseases, like osteoporosis, through aging. Although some chemokines are known to be involved in bone mass regulation, many have not been investigated. Thus, the present study aimed to investigate the role of chemokine ligand 28 (CCL28) on bone metabolism. MATERIALS AND METHODS To investigate the role of CCL28 on bone metabolism, 10-week-old male wild-type and Ccl28 knockout (Ccl28 KO) mice were analyzed. Microcomputed tomography analysis and bone tissue morphometry were used to investigate the effect of Ccl28 deficiency on the bone. CCL28 localization in bone tissue was assumed by immunohistochemistry. Osteoblast and osteoclast markers were evaluated by enzyme-linked immunosorbent assay and quantitative reverse transcription-polymerase chain reaction. Finally, in vitro experiments using MC3T3-E1 and bone marrow macrophages revealed the direct effect of CCL28 on osteoblast and osteoclast. RESULTS This study showed that Ccl28 deficiency significantly increased bone mass and the number of mature osteoblasts. Immunoreactivity for CCL28 was observed in osteoblasts and osteoclasts on bone tissue. Additionally, Ccl28 deficiency promoted osteoblast and osteoclast maturation. Moreover, CCL28 treatment decreased osteoblast and osteoclast activities but did not affect differentiation. CONCLUSION In summary, this study indicated that CCL28 is one of the negative regulators of bone mass by suppressing osteoblast and osteoclast activities. These results provide important insights into bone immunology and the selection of new osteoporosis treatments.
Collapse
Affiliation(s)
- Rina Iwamoto
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Takumi Takahashi
- Department of Agriculture, Graduate School of Integrated Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Kazuto Yoshimi
- Laboratory Animal Research Center, Division of Animal Genetics, Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan
| | - Yuji Imai
- Mouse Genomics Resource Laboratory, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka, 411-8540, Japan
| | - Tsuyoshi Koide
- Mouse Genomics Resource Laboratory, National Institute of Genetics, 1111 Yata, Mishima, Shizuoka, 411-8540, Japan
| | - Miroku Hara
- Department of Oral Diagnostics and Comprehensive Dentistry, Matsumoto Dental University Hospital, 1780 Hirooka-gobara, Shiojiri, Nagano, 399-0781, Japan
| | - Tadashi Ninomiya
- Department of Anatomy, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-8310, Japan
| | - Hiroaki Nakamura
- Department of Oral Histology, Matsumoto Dental University, 1780 Hirooka-gobara, Shiojiri, Nagano, 399-0781, Japan
| | - Kazutoshi Sayama
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
- Department of Agriculture, Graduate School of Integrated Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan
| | - Akira Yukita
- Department of Bioscience, Graduate School of Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
- Department of Education (Sciences), Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
- Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, 836 Ohya, Suruga-ku, Shizuoka, 422-8529, Japan.
| |
Collapse
|
24
|
Pawlak K, Sieklucka B, Pawlak D. Paracrine Kynurenic Pathway Activation in the Bone of Young Uremic Rats Can Antagonize Anabolic Effects of PTH on Bone Turnover and Strength through the Disruption of PTH-Dependent Molecular Signaling. Int J Mol Sci 2021; 22:ijms22126563. [PMID: 34207309 PMCID: PMC8234704 DOI: 10.3390/ijms22126563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 06/14/2021] [Accepted: 06/14/2021] [Indexed: 01/02/2023] Open
Abstract
Secondary hyperparathyroidism and abnormalities in tryptophan (TRP) metabolism are commonly observed in chronic kidney disease (CKD). The present study aimed to establish potential interactions between endogenous parathyroid hormone (PTH) and activation of the bone kynurenine (KYN) pathway in relation to bone turnover and strength in young rats after one month (CKD-1) and three months (CKD-3) of experimental CKD. TRP, KYN, KYN/TRP ratio and bone turnover markers (BTMs) were measured in trabecular and cortical bone tissue. Expression of aryl hydrocarbon receptor (AhR) and the genes involved in osteogenesis was determined in femoral bone. Biomechanical testing of femoral diaphysis and femoral neck was also performed. Activation of the KYN pathway in trabecular bone during CKD development intensified the expression of genes related to osteogenesis, which led to a decrease in cyclic adenosine monophosphate (cAMP) and BTMs levels, resulting in a stiffer and mechanically weaker femoral neck. In contrast, reduction of the KYN pathway in cortical bone allowed to unblock the PTH-dependent anabolic activating transcription factor 4/parathyroid hormone 1 receptor (PTH1R/ATF4) axis, led to cAMP accumulation, better bone turnover and strength in the course of CKD development. In summary, the paracrine KYN pathway in bone can interfere with the anabolic effects of PTH on bone through disrupting PTH-dependent molecular signaling.
Collapse
Affiliation(s)
- Krystyna Pawlak
- Department of Monitored Pharmacotherapy, Medical University of Bialystok, Mickiewicza 2C, 15-222 Bialystok, Poland
- Correspondence: ; Tel.: +48-85748-5600
| | - Beata Sieklucka
- Department of Pharmacodynamics, Medical University of Bialystok, Mickiewicza 2C, 15-222 Bialystok, Poland; (B.S.); (D.P.)
| | - Dariusz Pawlak
- Department of Pharmacodynamics, Medical University of Bialystok, Mickiewicza 2C, 15-222 Bialystok, Poland; (B.S.); (D.P.)
| |
Collapse
|
25
|
Detzen L, Cheat B, Besbes A, Hassan B, Marchi V, Baroukh B, Lesieur J, Sadoine J, Torrens C, Rochefort G, Bouchet J, Gosset M. NLRP3 is involved in long bone edification and the maturation of osteogenic cells. J Cell Physiol 2021; 236:4455-4469. [PMID: 33319921 DOI: 10.1002/jcp.30162] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/28/2020] [Accepted: 11/04/2020] [Indexed: 12/18/2022]
Abstract
Overexpression of the nucleotide-binding leucine-rich repeat protein 3 (NLRP3) inflammasome in chronic auto-immune diseases leads to skeletal anomalies, with severe osteopenia due to the activation of osteoclasts. Reproducing this phenotype in Nlrp3 knock-in mice has provided insights into the role of NLRP3 in bone metabolism. We studied the role of NLRP3 in physiological bone development using a complete Nlrp3 knock-out mouse model. We found impaired skeletal development in Nlrp3-/- mice, resulting in a shorter stature than that of Nlrp3+/+ mice. These growth defects were associated with altered femur bone growth, characterized by a deficient growth plate and an osteopenic profile of the trabeculae. No differences in osteoclast recruitment or activity were observed. Instead, Nlrp3-/- femurs showed a less mineralized matrix in the trabeculae than those of Nlrp3+/+ mice, as well as less bone sialoprotein (BSP) expressing hypertrophic chondrocytes. In vitro, primary osteoblasts lacking NLRP3 expression showed defective mineralization, together with the downregulation of BSP expression. Finally, follow-up by micro-CT highlighted the role of NLPR3 in bone growth, occurring early in living mice, as the osteopenic phenotype diminishes over time. Overall, our data suggest that NLRP3 is involved in bone edification via the regulation of hypertrophic chondrocyte maturation and osteoblast activity. Furthermore, the defect appeared to be transitory, as the skeleton recovered with aging.
Collapse
Affiliation(s)
- L Detzen
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Département de Parodontologie, Service d'Odontologie, AP-HP, Hôpital Rothschild, Paris, France
- Laboratoire d'Excellence INFLAMEX, France
| | - B Cheat
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
| | - A Besbes
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
- Faculté de Médecine Dentaire, Université de Monastir, Monastir, Tunisie
| | - B Hassan
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
| | - V Marchi
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
| | - B Baroukh
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
| | - J Lesieur
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
| | - J Sadoine
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Plateforme Imageries du Vivant, Faculté de Chirurgie Dentaire, Université de Paris, Paris, France
| | - C Torrens
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
| | - G Rochefort
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
| | - J Bouchet
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
| | - M Gosset
- UR 2496, Laboratory Orofacial Pathologies, Imaging and Biotherapies, Université de Paris, Montrouge, France
- Laboratoire d'Excellence INFLAMEX, France
- Service de Médecine Bucco-Dentaire, AP-HP, Hôpital Charles Foix, Ivry/seine, France
| |
Collapse
|
26
|
Bertoldo E, Adami G, Rossini M, Giollo A, Orsolini G, Viapiana O, Gatti D, Fassio A. The Emerging Roles of Endocrine Hormones in Different Arthritic Disorders. Front Endocrinol (Lausanne) 2021; 12:620920. [PMID: 34093428 PMCID: PMC8177688 DOI: 10.3389/fendo.2021.620920] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 04/20/2021] [Indexed: 12/17/2022] Open
Abstract
The relationship between endocrine hormones and the spectrum of rheumatic conditions has long been discussed in the literature, focusing primarily on sexual hormones, such as estrogens, androgens, prolactin (PRL). Estrogens are indeed involved in the pathogenesis of the main inflammatory arthritis thanks to their effects on the immune system, both stimulatory and inhibitory. The PRL system has been discovered in synovial tissue of rheumatoid arthritis (RA) and psoriatic arthritis (PsA), patients and has been propose as a new potential therapeutic target. Besides sexual hormones, in the last years scientific interest about the crosstalk of immune system with other class of hormones has grown. Hormones acting on the bone tissue (i.e. parathyroid hormone, vitamin D) and modulators of the Wnt pathway (i.e. Dickkopf-1) have been demonstrated to play active role in inflammatory arthritis course, defining a new field of research named osteoimmunology. PTH, which is one of the main determinants of Dkkopf-1, plays a crucial role in bone erosions in RA and a correlation between PTH, Trabecular Bone Score (TBS) and disease activity has been found in ankylosing spondylitis (AS). In PSA is under studying the interaction among IL-17 and bone metabolism. The purpose of this review is to discuss and summarize the recent data about the interaction between endocrine hormone and immune system in the main rheumatic disorders, covering in particular the role of bone-related hormones and cytokines. We will describe this relationship from a biochemical, diagnostic and therapeutic perspective, with a particular focus on RA, PsA and AS.
Collapse
Affiliation(s)
- Eugenia Bertoldo
- Rheumatology Unit, Department of Medicine, University of Verona, Verona, Italy
| | | | | | | | | | | | | | | |
Collapse
|
27
|
El-Shiekh RA, El-Mekkawy S, Mouneir SM, Hassan A, Abdel-Sattar E. Therapeutic potential of russelioside B as anti-arthritic agent in Freund's adjuvant-induced arthritis in rats. J Ethnopharmacol 2021; 270:113779. [PMID: 33418032 DOI: 10.1016/j.jep.2021.113779] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 12/29/2020] [Accepted: 01/02/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Caralluma species are traditional edible herbs used in folkloric medicine as antidiabetic, antioxidant, antipyretic, antirheumatic, anti-inflammatory and anthelmintic agents. C. quadrangula was selected in this study to document the traditional use of the genus as anti-rheumatic treatment and the possible mechanisms of action. AIM OF THE STUDY The higher mortality rates and shorter survival among the patients suffering from rheumatoid arthritis (RA) led to the increased interest on searching for new treatments for RA. Russelioside B (RB), a major pregnane glycoside found in C. quadrangula, was evaluated as a new anti-rheumatic agent. MATERIALS AND METHODS The n-butanol fraction of C. quadrangula was chromatographed on a silica gel column to isolate RB. The adjuvant-induced arthritis (AIA) model was established in rats by intradermal injection of complete Freund's adjuvant (CFA) to evaluate its anti-arthritic effect. Ibuprofen was used as a reference drug. Forty rats were randomly divided into 5 groups (n = 8): normal (NOR); CFA model (CFA); ibuprofen, 5 mg/kg; RB, 25 mg/kg and RB, 50 mg/kg. The treatments were initiated from day 16 when AIA model was established and continued up to day 40. Serum diagnostic rheumatoid markers, inflammatory cytokines, oxidative stress biomarkers, cartilage and bone degeneration enzymes were assessed. RESULTS RB at 50 mg/kg b. wt., showed significant decreases in the activities of hyaluronidase and β-glucouronidase enzymes as well significant decreases in the levels of proinflammatory cytokines as nuclear factor-kappa-B (NF-κB), tumour necrosis factor-α (TNF-α), interleukin-6 (IL-6) and interleukin-1β (IL-1β) compared to the CFA group; 11.04 ± 0.61 pg/mg protein, 4.35 ± 0.25 pg/mg protein, 3.32 ± 0.13 pg/mg protein & 2.75 ± 0.14 pg/mg protein for RB, 50 mg/kg b. wt. group vs. 25.33 ± 2.13 pg/mg protein, 25.65 ± 2.1 pg/mg protein, 22.20 ± 1.34 pg/mg protein & 13.27 ± 1.40 pg/mg protein for the arthritic group, respectively. The total antioxidant capacity (TAC) was significantly restored to normal values in RB, 50 mg/kg treated rats (4.01 ± 0.09 nmol/mL vs. 3.71 ± 0.27 nmol/mL) and the levels of myeloperoxidase (MPO) reduced by 10-folds of the CFA arthritic group. Bone histomorphometry revealed that RB treatment significantly attenuated the CFA-induced bone loss in a dose-dependent manner. CONCLUSIONS These findings suggested that the anti-arthritic effect of RB was mediated through the reduction of the rheumatoid markers, anti-inflammatory and antioxidant action, inhibition of cartilage and bone degenerative enzymes as well as attenuation of bone loss and osteoclastogenesis.
Collapse
Affiliation(s)
- Riham A El-Shiekh
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
| | - Sahar El-Mekkawy
- Department of Chemistry of Natural Compounds, National Research Centre, Dokki, Giza, 12622, Egypt
| | - Samar M Mouneir
- Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Egypt
| | - Azza Hassan
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Egypt
| | - Essam Abdel-Sattar
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt.
| |
Collapse
|
28
|
Shi C, Lu N, Qin Y, Liu M, Li H, Li H. Study on mechanical properties and permeability of elliptical porous scaffold based on the SLM manufactured medical Ti6Al4V. PLoS One 2021; 16:e0247764. [PMID: 33661944 PMCID: PMC7932120 DOI: 10.1371/journal.pone.0247764] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 02/13/2021] [Indexed: 12/26/2022] Open
Abstract
In this paper, we take the elliptical pore structure which is similar to the microstructure of cancellous bone as the research object, four groups of bone scaffolds were designed from the perspective of pore size, porosity and pore distribution. The size of the all scaffolds were uniformly designed as 10 × 10 × 12 mm. Four groups of model samples were prepared by selective laser melting (SLM) and Ti6Al4V materials. The statics performance of the scaffolds was comprehensively evaluated by mechanical compression simulation and mechanical compression test, the manufacturing error of the scaffold samples were evaluated by scanning electron microscope (SEM), and the permeability of the scaffolds were predicted and evaluated by simulation analysis of computational fluid dynamics (CFD). The results show that the different distribution of porosity, pore size and pores of the elliptical scaffold have a certain influence on the mechanical properties and permeability of the scaffold, and the reasonable size and angle distribution of the elliptical pore can match the mechanical properties and permeability of the elliptical pore scaffold with human cancellous bone, which has great potential for research and application in the field of artificial bone scaffold.
Collapse
Affiliation(s)
- Chenglong Shi
- School of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining, China
- * E-mail: (CS); (YQ)
| | - Nana Lu
- School of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining, China
| | - Yaru Qin
- School of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining, China
- * E-mail: (CS); (YQ)
| | - Mingdi Liu
- School of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining, China
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, China
| | - Hongxia Li
- School of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining, China
| | - Haichao Li
- School of Chemistry and Chemical Engineering, Qinghai Nationalities University, Xining, China
| |
Collapse
|
29
|
Shim KS, Hwang YH, Jang SA, Kim T, Ha H. Ethanol Extract of Amomum tsao-ko Ameliorates Ovariectomy-Induced Trabecular Loss and Fat Accumulation. Molecules 2021; 26:molecules26040784. [PMID: 33546367 PMCID: PMC7913548 DOI: 10.3390/molecules26040784] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/22/2021] [Accepted: 01/29/2021] [Indexed: 02/07/2023] Open
Abstract
In Asia, Amomum tsao-ko has long been used as a spice or seasoning in food to stimulate digestion. In the present study, we evaluated the effects of ethanol extract of Amomum tsao-ko (EEAT) on menopausal osteoporosis and obesity. After the administration of EEAT in ovariectomy (OVX) mice models for five weeks, microcomputed tomography and a histological analysis were performed to assess, respectively, the trabecular structure and the fat accumulation in adipose, liver, and bone tissues. We also examined the effects of EEAT on a bone marrow macrophage model of osteoclastogenesis by in vitro stimulation from the receptor activator of nuclear factor-kappa Β ligand (RANKL) through real-time PCR and Western blot analysis. In addition, ultrahigh performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) with authentic standards was applied to characterize the phytochemical profiling of EEAT. We found that EEAT significantly decreased OVX-induced body weight gain and fat accumulation, significantly prevented OVX-induced deterioration of bone mineral density and microstructure of trabecular tissues, and significantly inhibited osteoclast differentiation by downregulating NF-κB/Fos/NFATc1 signaling in osteoclasts. Furthermore, UHPLC-MS/MS identified eight beneficial phytochemicals in EEAT. Collectively, these results suggest that EEAT might be an effective nutraceutical candidate to attenuate menopausal osteoporosis by inhibiting osteoclastogenesis and to prevent obesity by suppressing fat accumulation.
Collapse
Affiliation(s)
- Ki-Shuk Shim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Yuseong-gu, Daejeon 34054, Korea; (K.-S.S.); (Y.-H.H.); (S.-A.J.); (T.K.)
| | - Youn-Hwan Hwang
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Yuseong-gu, Daejeon 34054, Korea; (K.-S.S.); (Y.-H.H.); (S.-A.J.); (T.K.)
- University of Science & Technology (UST), Korean Convergence Medicine Major KIOM, 1672 Yuseongdae-ro, Yuseong-gu, Daejeon 34054, Korea
| | - Seon-A Jang
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Yuseong-gu, Daejeon 34054, Korea; (K.-S.S.); (Y.-H.H.); (S.-A.J.); (T.K.)
| | - Taesoo Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Yuseong-gu, Daejeon 34054, Korea; (K.-S.S.); (Y.-H.H.); (S.-A.J.); (T.K.)
| | - Hyunil Ha
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Yuseong-daero 1672, Yuseong-gu, Daejeon 34054, Korea; (K.-S.S.); (Y.-H.H.); (S.-A.J.); (T.K.)
- Correspondence: ; Tel.: +82-42-868-9367
| |
Collapse
|
30
|
Demchenko GA, Abdreshov SN, Akhmetbaeva NA, Makashev EK, Nurmakhanova BA, Balkhybekova AO, Kalekeshov AM. The Specifics of Adrenergic Innervation of Lymph Nodes from Different Body Regions in Young, Mature, and Old Animals. Bull Exp Biol Med 2021; 170:283-287. [PMID: 33452972 DOI: 10.1007/s10517-021-05052-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Indexed: 11/25/2022]
Abstract
Adrenergic innervation in the tissue of the cervical, mesenteric, and popliteal lymph nodes in rats of different age groups (from 2-45 days to 24 months) was studied using the specific fluorescence-microscopic imaging of catecholamines. Adrenergic innervation in the lymph nodes of rats is present from the first days of life, but it develops and complicates during postnatal ontogeny and is fully formed by thedays 20-30 of life. By the age of one month, adrenergic innervation represents a well-formed apparatus in all parts of the node, i.e. in the capsule, trabeculae, and cortical and medullary substance. These are brightly fluorescent nerve fibers that form plexuses with regularly located multiple varicosities. In senile animals, the density and number of plexuses in all parts of the lymph node are preserved, but the brightness of plexuses decreases, plexus fibers become discontinuous, varicosities become less frequent or disappear. These changes are seen in lymph nodes from different body regions.
Collapse
Affiliation(s)
- G A Demchenko
- Laboratory of the Lymph System Physiology, Institute of Human and Animal Physiology, Ministry of Education and Science of the Republic of Kazakhstan, Almaty, Kazakhstan.
| | - S N Abdreshov
- Laboratory of the Lymph System Physiology, Institute of Human and Animal Physiology, Ministry of Education and Science of the Republic of Kazakhstan, Almaty, Kazakhstan
| | - N A Akhmetbaeva
- Laboratory of the Lymph System Physiology, Institute of Human and Animal Physiology, Ministry of Education and Science of the Republic of Kazakhstan, Almaty, Kazakhstan
| | - E K Makashev
- Laboratory of the Lymph System Physiology, Institute of Human and Animal Physiology, Ministry of Education and Science of the Republic of Kazakhstan, Almaty, Kazakhstan
| | - B A Nurmakhanova
- Laboratory of the Lymph System Physiology, Institute of Human and Animal Physiology, Ministry of Education and Science of the Republic of Kazakhstan, Almaty, Kazakhstan
| | - A O Balkhybekova
- Laboratory of the Lymph System Physiology, Institute of Human and Animal Physiology, Ministry of Education and Science of the Republic of Kazakhstan, Almaty, Kazakhstan
| | - A M Kalekeshov
- Laboratory of the Lymph System Physiology, Institute of Human and Animal Physiology, Ministry of Education and Science of the Republic of Kazakhstan, Almaty, Kazakhstan
| |
Collapse
|
31
|
Miyazaki-Asato Y, Koi K, Fujimoto H, Kakura K, Kido H, Yanagi T, Yamashita J. Intramedullary injury combined with osteoporosis therapeutics regulates targeted local osteogenesis. Sci Rep 2021; 11:205. [PMID: 33436871 PMCID: PMC7804436 DOI: 10.1038/s41598-020-80316-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/15/2020] [Indexed: 11/30/2022] Open
Abstract
Bone marrow ablation prompts transient bone formation in nearly the entire medullary cavity before marrow regeneration occurs. Here, we establish a procedure to direct bone formation in a desired particular site within the medullary cavity for support of biomedical devices. Local intramedullary injury was performed in the tibiae of rats and parathyroid hormone (PTH), alendronate, or saline was administered. Newly generated bone in the medulla was assessed by micro-CT and histology. To evaluate the function of newly generated bone, animals received intramedullary injury in tibiae followed by daily PTH. At day-14, implants were placed in the endocortical bone and the bone response to the implants was assessed. The fate of newly generated bone was compared with and without implants. We found that neither intramedullary injury nor medication alone resulted in bone formation. However, when combined, substantial bone was generated locally inside the diaphyseal medulla. Newly formed bone disappeared without implant placement but was retained with implants. Bone was especially retained around and between the implants. This study found that local bone marrow disruption followed by PTH or alendronate generated substantial cancellous bone locally in the diaphyseal medulla. This approach offers promise as a tissue engineering tool in medicine and dentistry.
Collapse
Affiliation(s)
- Yoko Miyazaki-Asato
- Department of Oral Rehabilitation, Oral Implantology, Fukuoka Dental College, Fukuoka, Japan
| | - Kiyono Koi
- Department of Restorative Dentistry, Oregon Health & Science University School of Dentistry, Portland, OR, USA
| | - Hiroki Fujimoto
- Department of Oral Rehabilitation, Fukuoka Dental College, Fukuoka, Japan
| | - Kae Kakura
- Department of Oral Rehabilitation, Oral Implantology, Fukuoka Dental College, Fukuoka, Japan
| | - Hirofumi Kido
- Department of Oral Rehabilitation, Oral Implantology, Fukuoka Dental College, Fukuoka, Japan
| | - Tsukasa Yanagi
- Department of Oral Rehabilitation, Oral Implantology, Fukuoka Dental College, Fukuoka, Japan
| | - Junro Yamashita
- Department of Oral Rehabilitation, Fukuoka Dental College, Fukuoka, Japan.
- Center for Regenerative Medicine, Fukuoka Dental College, Sawara-ku Tamura 2-15-1, Fukuoka, 814-0193, Japan.
| |
Collapse
|
32
|
McGrath C, Little-Letsinger SE, Sankaran JS, Sen B, Xie Z, Styner MA, Zong X, Chen W, Rubin J, Klett EL, Coleman RA, Styner M. Exercise Increases Bone in SEIPIN Deficient Lipodystrophy, Despite Low Marrow Adiposity. Front Endocrinol (Lausanne) 2021; 12:782194. [PMID: 35145475 PMCID: PMC8822583 DOI: 10.3389/fendo.2021.782194] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/20/2021] [Indexed: 01/12/2023] Open
Abstract
Exercise, typically beneficial for skeletal health, has not yet been studied in lipodystrophy, a condition characterized by paucity of white adipose tissue, with eventual diabetes, and steatosis. We applied a mouse model of global deficiency of Bscl2 (SEIPIN), required for lipid droplet formation. Male twelve-week-old B6 knockouts (KO) and wild type (WT) littermates were assigned six-weeks of voluntary, running exercise (E) versus non-exercise (N=5-8). KO weighed 14% less than WT (p=0.01) and exhibited an absence of epididymal adipose tissue; KO liver Plin1 via qPCR was 9-fold that of WT (p=0.04), consistent with steatosis. Bone marrow adipose tissue (BMAT), unlike white adipose, was measurable, although 40.5% lower in KO vs WT (p=0.0003) via 9.4T MRI/advanced image analysis. SEIPIN ablation's most notable effect marrow adiposity was in the proximal femoral diaphysis (-56% KO vs WT, p=0.005), with relative preservation in KO-distal-femur. Bone via μCT was preserved in SEIPIN KO, though some quality parameters were attenuated. Running distance, speed, and time were comparable in KO and WT. Exercise reduced weight (-24% WT-E vs WT p<0.001) but not in KO. Notably, exercise increased trabecular BV/TV in both (+31%, KO-E vs KO, p=0.004; +14%, WT-E vs WT, p=0.006). The presence and distribution of BMAT in SEIPIN KO, though lower than WT, is unexpected and points to a uniqueness of this depot. That trabecular bone increases were achievable in both KO and WT, despite a difference in BMAT quantity/distribution, points to potential metabolic flexibility during exercise-induced skeletal anabolism.
Collapse
Affiliation(s)
- Cody McGrath
- Department of Medicine, Division of Endocrinology & Metabolism, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Sarah E. Little-Letsinger
- Department of Medicine, Division of Endocrinology & Metabolism, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Jeyantt Srinivas Sankaran
- Department of Medicine, Division of Endocrinology & Metabolism, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Buer Sen
- Department of Medicine, Division of Endocrinology & Metabolism, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Zhihui Xie
- Department of Medicine, Division of Endocrinology & Metabolism, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Martin A. Styner
- Department of Psychiatry, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Computer Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Xiaopeng Zong
- Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Weiqin Chen
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, GA, United States
| | - Janet Rubin
- Department of Medicine, Division of Endocrinology & Metabolism, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- North Carolina Diabetes Research Center (NCDRC), Chapel Hill, NC, United States
| | - Eric L. Klett
- Department of Medicine, Division of Endocrinology & Metabolism, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- North Carolina Diabetes Research Center (NCDRC), Chapel Hill, NC, United States
- Department of Nutrition, Gillings School of Global Public Health, UNC, Chapel Hill, NC, United States
| | - Rosalind A. Coleman
- Department of Nutrition, Gillings School of Global Public Health, UNC, Chapel Hill, NC, United States
| | - Maya Styner
- Department of Medicine, Division of Endocrinology & Metabolism, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- North Carolina Diabetes Research Center (NCDRC), Chapel Hill, NC, United States
- *Correspondence: Maya Styner,
| |
Collapse
|
33
|
Ghazlan A, Ngo T, Nguyen T, Linforth S, Van Le T. Uncovering a high-performance bio-mimetic cellular structure from trabecular bone. Sci Rep 2020; 10:14247. [PMID: 32859928 PMCID: PMC7455569 DOI: 10.1038/s41598-020-70536-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 07/31/2020] [Indexed: 11/09/2022] Open
Abstract
The complex cellular structure of trabecular bone possesses lightweight and superior energy absorption capabilities. By mimicking this novel high-performance structure, engineered cellular structures can be advanced into a new generation of protective systems. The goal of this research is to develop an analytical framework for predicting the critical buckling load, Young's modulus and energy absorption of a 3D printed bone-like cellular structure. This is achieved by conducting extensive analytical simulations of the bone-inspired unit cell in parallel to traverse every possible combination of its key design parameters. The analytical framework is validated using experimental data and used to evolve the most optimal cellular structure, with the maximum energy absorption as the key performance criterion. The design charts developed in this work can be used to guide the development of a futuristic engineered cellular structure with superior performance and protective capabilities against extreme loads.
Collapse
Affiliation(s)
- Abdallah Ghazlan
- Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia.
| | - Tuan Ngo
- Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia.
| | - Tuan Nguyen
- Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Steven Linforth
- Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Tu Van Le
- Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC, 3010, Australia
| |
Collapse
|
34
|
Klein S, Mentrup B, Timmen M, Sherwood J, Lindemann O, Fobker M, Kronenberg D, Pap T, Raschke MJ, Stange R. Modulation of Transient Receptor Potential Channels 3 and 6 Regulates Osteoclast Function with Impact on Trabecular Bone Loss. Calcif Tissue Int 2020; 106:655-664. [PMID: 32140760 DOI: 10.1007/s00223-020-00673-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/08/2020] [Indexed: 01/09/2023]
Abstract
Enhanced osteoclast formation and function is a fundamental cause of alterations to bone structure and plays an important role in several diseases impairing bone quality. Recent work revealed that TRP calcium channels 3 and 6 might play a special role in this context. By analyzing the bone phenotype of TRPC6-deficient mice we detected a regulatory effect of TRPC3 on osteoclast function. These mice exhibit a significant decrease in bone volume per tissue volume, trabecular thickness and -number together with an increased number of osteoclasts found on the surface of trabecular bone. Primary bone marrow mononuclear cells from TRPC6-deficient mice showed enhanced osteoclastic differentiation and resorptive activity. This was confirmed in vitro by using TRPC6-deficient RAW 264.7 cells. TRPC6 deficiency led to an increase of TRPC3 in osteoclasts, suggesting that TRPC3 overcompensates for the loss of TRPC6. Raised intracellular calcium levels led to enhanced NFAT-luciferase reporter gene activity in the absence of TRPC6. In line with these findings inhibition of TRPC3 using the specific inhibitor Pyr3 significantly reduced intracellular calcium concentrations and normalized osteoclastic differentiation and resorptive activity of TRPC6-deficient cells. Interestingly, an up-regulation of TRPC3 could be detected in a cohort of patients with low bone mineral density by comparing micro array data sets of circulating human osteoclast precursor cells to those from patients with high bone mineral density, suggesting a noticeable contribution of TRP calcium channels on bone quality. These observations demonstrate a novel regulatory function of TRPC channels in the process of osteoclastic differentiation and bone loss.
Collapse
Affiliation(s)
- Sebastian Klein
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
- Institute of Pathology, University Hospital of Cologne, Cologne, Germany
| | - Birgit Mentrup
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Melanie Timmen
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Joanna Sherwood
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Otto Lindemann
- Institute of Physiology II, University Münster, Münster, Germany
| | - Manfred Fobker
- Center for Laboratory Medicine, University Hospital Münster, Münster, Germany
| | - Daniel Kronenberg
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Thomas Pap
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany
| | - Michael J Raschke
- Department of Trauma, Hand and Reconstructive Surgery University Hospital Münster, Münster, Germany
| | - Richard Stange
- Institute of Musculoskeletal Medicine, University Münster, Münster, Germany.
| |
Collapse
|
35
|
Mitchell DM, Caksa S, Joseph T, Bouxsein ML, Misra M. Elevated HbA1c Is Associated with Altered Cortical and Trabecular Microarchitecture in Girls with Type 1 Diabetes. J Clin Endocrinol Metab 2020; 105:5639696. [PMID: 31761940 PMCID: PMC7064304 DOI: 10.1210/clinem/dgz221] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/22/2019] [Indexed: 12/27/2022]
Abstract
CONTEXT Skeletal fragility is a significant complication of type 1 diabetes (T1D), with an increased risk of fracture observed starting in childhood. Altered bone accrual and microarchitectural development during the critical peripubertal years may contribute to this fragility. OBJECTIVE To evaluate differences in skeletal microarchitecture between girls with T1D and controls and to assess factors associated with these differences. DESIGN Cross-sectional comparison. PARTICIPANTS Girls ages 10-16 years, 62 with T1D and 61 controls. RESULTS Areal bone mineral density (BMD) measured by dual-energy x-ray absorptiometry did not differ between girls with and without T1D. At the distal tibia, trabecular BMD was 7.3 ± 2.9% lower in T1D (P = 0.013), with fewer plate-like and axially-aligned trabeculae. Cortical porosity was 21.5 ± 10.5% higher, while the estimated failure load was 4.7 ± 2.2% lower in T1D (P = 0.043 and P = 0.037, respectively). At the distal radius, BMD and microarchitecture showed similar differences between the groups but did not reach statistical significance. After stratifying by HbA1c, only those girls with T1D and HbA1c > 8.5% differed significantly from controls. P1NP, a marker of bone formation, was lower in T1D while CTX and TRAcP5b, markers of bone resorption and osteoclast number, respectively, did not differ. The insulin-like growth factor 1 (IGF-1) Z-score was lower in T1D, and after adjustment for the IGF-1 Z-score, associations between T1D status and trabecular microarchitecture were largely attenuated. CONCLUSIONS Skeletal microarchitecture is altered in T1D early in the course of disease and among those with higher average glycemia. Suppressed bone formation and lower circulating IGF-1 likely contribute to this phenotype.
Collapse
Affiliation(s)
- Deborah M Mitchell
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
- Pediatric Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
- Correspondence and Reprint Requests: Deborah Mitchell, MD, Endocrine Unit, Massachusetts General Hospital, 50 Blossom St., Boston, MA 02114. Phone: 617-724-2034; Fax: 617-726-1703. E-mail:
| | - Signe Caksa
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Taïsha Joseph
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| | - Mary L Bouxsein
- Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconness Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Madhusmita Misra
- Pediatric Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts
| |
Collapse
|
36
|
Albiol L, Büttner A, Pflanz D, Mikolajewicz N, Birkhold AI, Kramer I, Kneissel M, Duda GN, Checa S, Willie BM. Effects of Long-Term Sclerostin Deficiency on Trabecular Bone Mass and Adaption to Limb Loading Differ in Male and Female Mice. Calcif Tissue Int 2020; 106:415-430. [PMID: 31873756 DOI: 10.1007/s00223-019-00648-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 12/09/2019] [Indexed: 01/08/2023]
Abstract
A new therapeutic option to treat osteoporosis is focused on Wnt signaling and its inhibitor sclerostin, a product of the Sost gene. In this work, we study the effect of sclerostin deficiency on trabecular bone formation and resorption in male and female mice and whether it affects mechano-responsiveness. Male and female 10- and 26-week-old Sost knockout (KO) and littermate controls (LCs) were subjected to in vivo mechanical loading of the left tibia for 2 weeks. The right tibia served as internal control. The mice were imaged using in vivo micro-computed tomography at days 0, 5, 10, and 15 and tibiae were collected for histomorphometric analyses after euthanasia. Histomorphometry and micro-CT-based 3D time-lapse morphometry revealed an anabolic and anti-catabolic effect of Sost deficiency although increased trabecular bone resorption accompanied by diminished trabecular bone formation occurred with age. Loading led to diminished resorption in adult female but not in male mice. A net gain in bone volume could be achieved with mechanical loading in Sost KO adult female mice, which occurred through a further reduction in resorbed bone volume. Our data show that sclerostin deficiency has a particularly positive effect in adult female mice. Sclerostin antibodies are approved to treat postmenopausal women with high risk of osteoporotic fractures. Further studies are required to clarify whether both sexes benefit equally from sclerostin inhibition.
Collapse
Affiliation(s)
- Laia Albiol
- Julius Wolff Institute, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Berlin-Brandenburg School for Regenerative Therapies, Berlin, Germany
| | - Alexander Büttner
- Julius Wolff Institute, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - David Pflanz
- Julius Wolff Institute, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Nicholas Mikolajewicz
- Department of Dentistry, McGill University, Montreal, Canada
- Research Centre, Shriners Hospital for Children-Canada, 1003 Decarie Blvd, Montreal, QC, H4A 0A9, Canada
| | - Annette I Birkhold
- Julius Wolff Institute, Charité - Universitätsmedizin Berlin, Berlin, Germany
- Continuum Biomechanics and Mechanobiology Research Group, Institute of Applied Mechanics, University of Stuttgart, Stuttgart, Germany
| | | | | | - Georg N Duda
- Julius Wolff Institute, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Sara Checa
- Julius Wolff Institute, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Bettina M Willie
- Department of Pediatric Surgery, McGill University, Montreal, Canada.
- Research Centre, Shriners Hospital for Children-Canada, 1003 Decarie Blvd, Montreal, QC, H4A 0A9, Canada.
| |
Collapse
|
37
|
Nethander M, Pettersson-Kymmer U, Vandenput L, Lorentzon M, Karlsson M, Mellström D, Ohlsson C. BMD-Related Genetic Risk Scores Predict Site-Specific Fractures as Well as Trabecular and Cortical Bone Microstructure. J Clin Endocrinol Metab 2020; 105:5739622. [PMID: 32067027 PMCID: PMC7069346 DOI: 10.1210/clinem/dgaa082] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/14/2020] [Indexed: 11/30/2022]
Abstract
CONTEXT It is important to identify patients at highest risk of fractures. OBJECTIVE To compare the separate and combined performances of bone-related genetic risk scores (GRSs) for prediction of forearm, hip and vertebral fractures separately, as well as of trabecular and cortical bone microstructure parameters separately. DESIGN, SETTING, AND PARTICIPANTS Using 1103 single nucleotide polymorphisms (SNPs) independently associated with estimated bone mineral density of the heel (eBMD), we developed a weighted GRS for eBMD and determined its contribution to fracture prediction beyond 2 previously developed GRSs for femur neck BMD (49 SNPs) and lumbar spine BMD (48 SNPs). Associations between these GRSs and forearm (ncases = 1020; ncontrols = 2838), hip (ncases = 1123; ncontrols = 2630) and vertebral (ncases = 288; ncontrols = 1187) fractures were evaluated in 3 Swedish cohorts. Associations between the GRSs and trabecular and cortical bone microstructure parameters (n = 426) were evaluated in the MrOS Sweden cohort. RESULTS We found that eBMDGRS was the only significant independent predictor of forearm and vertebral fractures while both FN-BMDGRS and eBMDGRS were significant independent predictors of hip fractures. The eBMDGRS was the major GRS contributing to prediction of trabecular bone microstructure parameters while both FN-BMDGRS and eBMDGRS contributed information for prediction of cortical bone microstructure parameters. CONCLUSIONS The eBMDGRS independently predicts forearm and vertebral fractures while both FN-BMDGRS and eBMDGRS contribute independent information for prediction of hip fractures. We propose that eBMDGRS captures unique information about trabecular bone microstructure useful for prediction of forearm and vertebral fractures. These findings may facilitate personalized medicine to predict site-specific fractures as well as cortical and trabecular bone microstructure separately.
Collapse
Affiliation(s)
- Maria Nethander
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Bioinformatics Core Facility, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Ulrika Pettersson-Kymmer
- Clinical Pharmacology, Department of Pharmacology and Clinical Neuroscience, Umea University, Umea, Sweden
| | - Liesbeth Vandenput
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Mattias Lorentzon
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Geriatric Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, Australia
| | - Magnus Karlsson
- Clinical and Molecular Osteoporosis Research Unit, Department of Orthopedics and Clinical Sciences, Lund University, Skåne University Hospital, Malmö, Sweden
| | - Dan Mellström
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Geriatric Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Sahlgrenska University Hospital, Department of Drug Treatment, Gothenburg, Sweden
- Correspondence and Reprint Requests: Professor Claes Ohlsson MD, PhD, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Vita Stråket 11, SE-41345 Gothenburg, Sweden. E-mail:
| |
Collapse
|
38
|
Xi G, Demambro VE, D’Costa S, Xia SK, Cox ZC, Rosen CJ, Clemmons DR. Estrogen Stimulation of Pleiotrophin Enhances Osteoblast Differentiation and Maintains Bone Mass in IGFBP-2 Null Mice. Endocrinology 2020; 161:5805123. [PMID: 32168373 PMCID: PMC7069688 DOI: 10.1210/endocr/bqz007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 03/12/2020] [Indexed: 12/22/2022]
Abstract
Insulin-like growth factor binding protein-2 (IGFBP-2) stimulates osteoblast differentiation but only male Igfbp2 null mice have a skeletal phenotype. The trophic actions of IGFBP-2 in bone are mediated through its binding to receptor tyrosine phosphatase beta (RPTPβ). Another important ligand for RPTPβ is pleiotrophin (PTN), which also stimulates osteoblast differentiation. We determined the change in PTN and RPTPβ in Igfbp2-/- mice. Analysis of whole bone mRNA in wild-type and knockout mice revealed increased expression of Ptn. Rptpβ increased in gene-deleted animals with females having greater expression than males. Knockdown of PTN expression in osteoblasts in vitro inhibited differentiation, and addition of PTN to the incubation medium rescued the response. Estradiol stimulated PTN secretion and PTN knockdown blocked estradiol-stimulated differentiation. PTN addition to IGFBP-2 silenced osteoblast stimulated differentiation, and an anti-fibronectin-3 antibody, which inhibits PTN binding to RPTPβ, inhibited this response. Estrogen stimulated PTN secretion and downstream signaling in the IGFBP-2 silenced osteoblasts and these effects were inhibited with anti-fibronectin-3. Administration of estrogen to wild-type and Igfbp2-/- male mice stimulated an increase in both areal bone mineral density and trabecular bone volume fraction but the increase was significantly greater in the Igfbp2-/- animals. Estrogen also stimulated RPTPβ expression in the null mice. We conclude that loss of IGFBP-2 expression is accompanied by upregulation of PTN and RPTPβ expression in osteoblasts, that the degree of increase is greater in females due to estrogen secretion, and that this compensatory change may account for some component of the maintenance of normal bone mass in female mice.
Collapse
Affiliation(s)
- Gang Xi
- Department of Medicine UNC School of Medicine Chapel Hill, North Carolina
| | | | - Susan D’Costa
- Department of Medicine UNC School of Medicine Chapel Hill, North Carolina
| | - Shalier K Xia
- Department of Medicine UNC School of Medicine Chapel Hill, North Carolina
| | - Zach C Cox
- Department of Medicine UNC School of Medicine Chapel Hill, North Carolina
| | | | - David R Clemmons
- Department of Medicine UNC School of Medicine Chapel Hill, North Carolina
- Correspondence: David R. Clemmons, MD, CB#7170, 8024 Burnett-Womack, Division of Endocrinology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-7170. E-mail:
| |
Collapse
|
39
|
Papageorgiou M, Föger-Samwald U, Wahl K, Kerschan-Schindl K, Pietschmann P. Age- and Strain-Related Differences in Bone Microstructure and Body Composition During Development in Inbred Male Mouse Strains. Calcif Tissue Int 2020; 106:431-443. [PMID: 31901965 DOI: 10.1007/s00223-019-00652-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 12/21/2019] [Indexed: 01/31/2023]
Abstract
We explored age- and strain-related differences in bone microstructure and body composition in male C57BL/6J, DBA/2JRj and C3H/J mice. Bone microstructure of the femur, tibia and L4 was assessed by μCT at the age of 8, 16 and 24 weeks. The weight of several muscles and fat depots were measured at the same time points. At all timepoints, C3H/J mice had the thickest cortices followed by DBA/2JRj and C57BL/6J mice. Nevertheless, C57BL/6J mice had higher Tb.BV/TV and Tb.N, and lower Tb.Sp than DBA/2JRj and C3H/J mice at least at 24 weeks of age. Skeletal development patterns differed among strains. C57BL/6J and DBA/2JRj mice, but not C3H/J mice, experienced significant increases in the sum of the masses of 6 individual muscles by 24 weeks of age. In C57BL/6J and DBA/2JRj mice, the mass of selected fat depots reached highest values at 24 weeks, whist, in C3H/J mice, the highest values of fat depots masses were achieved at 16 weeks. Early strain differences in muscle and fat masses were largely diminished by 24 weeks of age. C3H/J and C57BL/6J mice displayed the most favorable cortical and trabecular bone parameters, respectively. Strain differences in body composition were less overt than strain specificity in bone microstructure, however, they possibly influenced aspects of skeletal development.
Collapse
Affiliation(s)
- Maria Papageorgiou
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
- Division of Bone Diseases, Department of Internal Medicine Specialties, Faculty of Medicine, Geneva University Hospital, Geneva, Switzerland
| | - Ursula Föger-Samwald
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Katharina Wahl
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | | | - Peter Pietschmann
- Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
| |
Collapse
|
40
|
Lademann F, Tsourdi E, Rijntjes E, Köhrle J, Hofbauer LC, Heuer H, Rauner M. Lack of the Thyroid Hormone Transporter Mct8 in Osteoblast and Osteoclast Progenitors Increases Trabecular Bone in Male Mice. Thyroid 2020; 30:329-342. [PMID: 31910109 DOI: 10.1089/thy.2019.0271] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Background: Bone is an important target of thyroid hormones (THs), which require transport into target cells to exert their actions. Recently, the TH-specific monocarboxylate transporter 8 (Mct8) was reported as a regulator of bone mass in male mice. However, its global deletion leads to high 3,3',5-L-triiodothyronine (T3) serum concentrations that may mask direct effects of Mct8-deficiency on bone. In this study, we assessed the bone cell intrinsic function of Mct8 ex vivo and in vivo using conditional Mct8-knockout lines specifically targeting osteoclast and osteoblast progenitors, as well as mature osteoblasts and osteocytes. Materials and Methods: Twelve-week-old male mice with a global Mct8-deficiency or a conditional Mct8-knockout in osteoclast precursors, osteoprogenitors, or mature osteoblasts/osteocytes were analyzed regarding their bone microarchitecture, turnover, and strength. Furthermore, ex vivo studies were conducted to investigate the role of Mct8 in bone cell differentiation and functionality, as well as TH uptake. Results: Global Mct8-knockout mice demonstrated 1.7-fold higher T3 serum concentrations and trabecular bone loss (-28%) likely due to an increased bone turnover as shown by increased osteoblast (+45%) and osteoclast numbers (+41%). However, cortical bone mineral density was increased. Ex vivo cultures of bone marrow-derived osteoblasts and osteoclasts revealed highest expression of Mct8 in mature bone cells. In addition, Mct8-deficiency resulted in a lower mRNA expression of osteoblast and osteoclast differentiation markers, as well as a reduced mineralization capacity and osteoclast numbers, respectively, indicating a bone cell intrinsic role of Mct8. In fact, conditional Mct8-knockout and inhibition of Mct8 in osteoblasts led to an attenuated T3 uptake ex vivo. In vivo, osteoprogenitor-specific Mct8-knockout enhanced trabecular bone volume (+16%) with osteoblast numbers being increased 3.7 fold. Interestingly, Mct8-deficiency in osteoprogenitors and late osteoblasts/osteocytes both resulted in cortical bone loss. Finally, Mct8-deletion in osteoclast progenitors increased trabecular bone volume (+20%) due to reduced osteoclast numbers (-32%), whereas osteoblast numbers were enhanced (+25%). Conclusions: This study confirms that high systemic T3 in global Mct8-knockout mice masks the direct effect of Mct8. Moreover, it identifies Mct8 as a critical regulator of trabecular vs. cortical bone by regulating T3 uptake and highlights its cell intrinsic role in osteoclast and osteoblast progenitors.
Collapse
Affiliation(s)
- Franziska Lademann
- Department of Medicine III, Universitätsklinikum Dresden, Dresden, Germany
- Center for Healthy Aging, Universitätsklinikum Dresden, Dresden, Germany
| | - Elena Tsourdi
- Department of Medicine III, Universitätsklinikum Dresden, Dresden, Germany
- Center for Healthy Aging, Universitätsklinikum Dresden, Dresden, Germany
| | - Eddy Rijntjes
- Institut für Experimentelle Endokrinologie, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Josef Köhrle
- Institut für Experimentelle Endokrinologie, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Lorenz C Hofbauer
- Department of Medicine III, Universitätsklinikum Dresden, Dresden, Germany
- Center for Healthy Aging, Universitätsklinikum Dresden, Dresden, Germany
| | - Heike Heuer
- Klinik für Endokrinologie, Universitätsklinikum Essen, Universität Duisburg-Essen, Essen, Germany
| | - Martina Rauner
- Department of Medicine III, Universitätsklinikum Dresden, Dresden, Germany
- Center for Healthy Aging, Universitätsklinikum Dresden, Dresden, Germany
| |
Collapse
|
41
|
Abstract
PURPOSE OF REVIEW This review summarizes recently published data on the effects of pregnancy and lactation on bone structure, mechanical properties, and mechano-responsiveness in an effort to elucidate how the balance between the structural and metabolic functions of the skeleton is achieved during these physiological processes. RECENT FINDINGS While pregnancy and lactation induce significant changes in bone density and structure to provide calcium for fetal/infant growth, the maternal physiology also comprises several innate compensatory mechanisms that allow for the maintenance of skeletal mechanical integrity. Both clinical and animal studies suggest that pregnancy and lactation lead to adaptations in cortical bone structure to allow for rapid calcium release from the trabecular compartment while maintaining whole bone stiffness and strength. Moreover, extents of lactation-induced bone loss and weaning-induced recovery are highly dependent on a given bone's load-bearing function, resulting in better protection of the mechanical integrity at critical load-bearing sites. The recent discovery of lactation-induced osteocytic perilacunar/canalicular remodeling (PLR) indicates a new means for osteocytes to modulate mineral homeostasis and tissue-level mechanical properties of the maternal skeleton. Furthermore, lactation-induced PLR may also play an important role in maintaining the maternal skeleton's load-bearing capacity by altering osteocyte's microenvironment and modulating the transmission of anabolic mechanical signals to osteocytes. Both clinical and animal studies show that parity and lactation have no adverse, or a positive effect on bone strength later in life. The skeletal effects during pregnancy and lactation reflect an optimized balance between the mechanical and metabolic functions of the skeleton.
Collapse
Affiliation(s)
- X Sherry Liu
- McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, 332A Stemmler Hall, 36th Street and Hamilton Walk, Philadelphia, PA, USA.
| | - Liyun Wang
- Center for Biomechanical Research, Department of Mechanical Engineering, University of Delaware, Newark, DE, USA
| | - Chantal M J de Bakker
- McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
| | - Xiaohan Lai
- School of Life Sciences, University of Science and Technology of China, Hefei, China
| |
Collapse
|
42
|
Abstract
PURPOSE OF REVIEW Individuals with type 1 and type 2 diabetes mellitus (T1DM, T2DM) have an increased risk of bone fracture compared to non-diabetic controls that is not explained by differences in BMD, BMI, or falls. Thus, bone tissue fracture resistance may be reduced in individuals with DM. The purpose of this review is to summarize work that analyzes the effects of T1DM and T2DM on bone tissue compositional and mechanical properties. RECENT FINDINGS Studies of clinical T2DM specimens revealed increased mineralization and advanced glycation endproduct (AGE) concentrations and significant relationships between mechanical performance and composition of cancellous bone. Specifically, in femoral cancellous tissue, compressive stiffness and strength increased with mineral content; and post-yield properties decreased with AGE concentration. In addition, cortical resistance to in vivo indentation (bone material strength index) was lower in patients with T2DM vs. age-matched non-diabetic controls, and this resistance decreased with worsening glycemic control. Recent studies on patients with T1DM and history of a prior fragility fracture found greater mineral content and concentrations of AGEs in iliac trabecular bone and correspondingly stiffer, harder bone at the nanosacle. Recent observational data showed greater AGE and mineral content in surgically retrieved bone from patients with T2DM vs. non-DM controls, consistent with reduced bone remodeling. Limited data on human T1DM bone tissue also showed higher mineral and AGE content in patients with prior fragility fractures compared to non-DM and non-fracture controls.
Collapse
MESH Headings
- Animals
- Biomechanical Phenomena
- Blood Glucose/metabolism
- Bone Density
- Bone Remodeling
- Bone and Bones/diagnostic imaging
- Bone and Bones/metabolism
- Bone and Bones/physiopathology
- Cancellous Bone/diagnostic imaging
- Cancellous Bone/metabolism
- Cancellous Bone/physiopathology
- Cortical Bone/diagnostic imaging
- Cortical Bone/metabolism
- Cortical Bone/physiopathology
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/physiopathology
- Diabetes Mellitus, Type 1/epidemiology
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/physiopathology
- Diabetes Mellitus, Type 2/epidemiology
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/physiopathology
- Fractures, Bone/epidemiology
- Glycation End Products, Advanced/metabolism
- Humans
Collapse
Affiliation(s)
- Sashank Lekkala
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
| | - Erik A Taylor
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY, USA
| | - Heather B Hunt
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA
| | - Eve Donnelly
- Department of Materials Science and Engineering, Cornell University, Ithaca, NY, USA.
- Research Division, Hospital for Special Surgery, New York, NY, USA.
| |
Collapse
|
43
|
Braux J, Jourdain ML, Guillaume C, Untereiner V, Piot O, Baehr A, Klymiuk N, Winter N, Berri M, Buzoni-Gatel D, Caballero I, Guillon A, Si-Tahar M, Jacquot J, Velard F. CFTR-deficient pigs display alterations of bone microarchitecture and composition at birth. J Cyst Fibros 2019; 19:466-475. [PMID: 31787573 DOI: 10.1016/j.jcf.2019.10.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 10/07/2019] [Accepted: 10/22/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND The lack of cystic fibrosis transmembrane conductance regulator (CFTR) function causes cystic fibrosis (CF), predisposing to severe lung disease, reduced growth and osteopenia. Both reduced bone content and strength are increasingly recognized in infants with CF before the onset of significant lung disease, suggesting a developmental origin and a possible role in bone disease pathogenesis. The role of CFTR in bone metabolism is unclear and studies on humans are not feasible. Deletion of CFTR in pigs (CFTR -/- pigs) displays at birth severe malformations similar to humans in the intestine, respiratory tract, pancreas, liver, and male reproductive tract. METHODS We compared bone parameters of CFTR -/- male and female pigs with those of their wild-type (WT) littermates at birth. Morphological and microstructural properties of femoral cortical and trabecular bone were evaluated using micro-computed tomography (μCT), and their chemical compositions were examined using Raman microspectroscopy. RESULTS The integrity of the CFTR -/- bone was altered due to changes in its microstructure and chemical composition in both sexes. Low cortical thickness and high cortical porosity were found in CFTR -/- pigs compared to sex-matched WT littermates. Moreover, an increased chemical composition heterogeneity associated with higher carbonate/phosphate ratio and higher mineral crystallinity was found in CFTR -/- trabecular bone, but not in CFTR -/- cortical bone. CONCLUSIONS The loss of CFTR directly alters the bone composition and metabolism of newborn pigs. Based on these findings, we speculate that bone defects in patients with CF could be a primary, rather than a secondary consequence of inflammation and infection.
Collapse
Affiliation(s)
- Julien Braux
- Université de Reims Champagne Ardenne, BIOS EA 4691, Biomatériaux et Inflammation en site osseux, SFR CAP-Santé (FED 4231), 1, Avenue du Maréchal Juin, 51097 Reims, France
| | - Marie-Laure Jourdain
- Université de Reims Champagne Ardenne, BIOS EA 4691, Biomatériaux et Inflammation en site osseux, SFR CAP-Santé (FED 4231), 1, Avenue du Maréchal Juin, 51097 Reims, France
| | - Christine Guillaume
- Université de Reims Champagne Ardenne, BIOS EA 4691, Biomatériaux et Inflammation en site osseux, SFR CAP-Santé (FED 4231), 1, Avenue du Maréchal Juin, 51097 Reims, France
| | - Valérie Untereiner
- Université de Reims Champagne Ardenne (URCA), PICT Platform, Reims, 1, Avenue du Maréchal Juin, 51097 Reims, France
| | - Olivier Piot
- Université de Reims Champagne-Ardenne, BioSpecT (Translational BioSpectroscopy) EA 7506, 1, Avenue du Maréchal Juin, 51097 Reims, France
| | - Andrea Baehr
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, Ludwig-Maximilians-Universitat Munchen, Hackerstrasse 27, 85764, Oberschleissheim, Germany
| | - Nikolai Klymiuk
- Institute of Molecular Animal Breeding and Biotechnology, Gene Center, Ludwig-Maximilians-Universitat Munchen, Hackerstrasse 27, 85764, Oberschleissheim, Germany
| | - Nathalie Winter
- INRA, UMR1282 ISP, Centre de recherches INRA Val de Loire, 37380, Nouzilly, France
| | - Mustapha Berri
- INRA, UMR1282 ISP, Centre de recherches INRA Val de Loire, 37380, Nouzilly, France
| | | | - Ignaccio Caballero
- INRA, UMR1282 ISP, Centre de recherches INRA Val de Loire, 37380, Nouzilly, France
| | - Antoine Guillon
- Inserm, Centre d'Etude des Pathologies Respiratoires, UMR1100/EA6305, 10 Boulevard Tonnellé, 37032, Tours, France
| | - Mustapha Si-Tahar
- Inserm, Centre d'Etude des Pathologies Respiratoires, UMR1100/EA6305, 10 Boulevard Tonnellé, 37032, Tours, France
| | - Jacky Jacquot
- Université de Reims Champagne Ardenne, BIOS EA 4691, Biomatériaux et Inflammation en site osseux, SFR CAP-Santé (FED 4231), 1, Avenue du Maréchal Juin, 51097 Reims, France.
| | - Frédéric Velard
- Université de Reims Champagne Ardenne, BIOS EA 4691, Biomatériaux et Inflammation en site osseux, SFR CAP-Santé (FED 4231), 1, Avenue du Maréchal Juin, 51097 Reims, France.
| |
Collapse
|
44
|
Kwak MK, Kim BJ, Kim JS, Lee SH, Koh JM. The Local and Systemic Interactions Between Muscle and Bone in Postmenopausal Korean Women. Calcif Tissue Int 2019; 105:373-382. [PMID: 31346666 DOI: 10.1007/s00223-019-00585-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 07/09/2019] [Indexed: 10/26/2022]
Abstract
Despite many studies about local and systemic interactions between bone and muscle, the more dominant interaction remains unclear. We aimed to compare the association of skeletal muscle mass with bone mineral density (BMD) at the femur, which seemed more likely affected by local interaction, and the association of skeletal muscle mass with BMD at the lumbar spine (LS-BMD) and the trabecular bone score (TBS), which seemed more likely affected by systemic interaction. In 279 women, we measured the femoral neck BMD (FN-BMD), total hip BMD (TH-BMD), LS-BMD, and TBS. Appendicular skeletal muscle mass (ASM), lean mass (LM), and other LM (OLM; remaining LM excluding ASM) were measured using bioelectrical impedance analysis. ASM (β = 0.008-0.014, p < 0.001-0.014), OLM (β = 0.006-0.011, p < 0.001-0.044), and LM (β = 0.004-0.007, p < 0.001-0.020) were positively associated with FN-BMD and TH-BMD, but not with LS-BMD or TBS. The positive association of ASM, but not of OLM, was stronger than that of LM (p = 0.023). Odd ratios (ORs) with 95% confidence intervals (95% CIs) for osteoporosis were statistically significant for ASM (OR 0.74, 95% CI 0.59-0.93) and marginally significant for OLM (OR 0.80, 95% CI 0.64-1.01) in the femur, but not in the LS. The direct and indirect (through OLM) effects of ASM on BMD were 69.1-72.2% and 27.8-30.9%, respectively. In the conclusion, ASM was more positively associated with FN-BMD, but not with LS-BMD and TBS, than OLM. This suggests stronger effects of local interaction than systemic interaction between muscle and bone.
Collapse
Affiliation(s)
- Mi Kyung Kwak
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
- Division of Endocrinology and Metabolism, Hallym University Dongtan Sacred Heart Hospital, Hwaseong-si, Republic of Korea
| | - Beom-Jun Kim
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Jae Seung Kim
- Division of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Seung Hun Lee
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
| | - Jung-Min Koh
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
| |
Collapse
|
45
|
Fenton CG, Doig CL, Fareed S, Naylor A, Morrell AP, Addison O, Wehmeyer C, Buckley CD, Cooper MS, Lavery GG, Raza K, Hardy RS. 11β-HSD1 plays a critical role in trabecular bone loss associated with systemic glucocorticoid therapy. Arthritis Res Ther 2019; 21:188. [PMID: 31420008 PMCID: PMC6698000 DOI: 10.1186/s13075-019-1972-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 08/07/2019] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND Despite their efficacy in the treatment of chronic inflammation, the prolonged application of therapeutic glucocorticoids (GCs) is limited by significant systemic side effects including glucocorticoid-induced osteoporosis (GIOP). 11β-Hydroxysteroid dehydrogenase type 1 (11β-HSD1) is a bi-directional enzyme that primarily activates GCs in vivo, regulating tissue-specific exposure to active GC. We aimed to determine the contribution of 11β-HSD1 to GIOP. METHODS Wild type (WT) and 11β-HSD1 knockout (KO) mice were treated with corticosterone (100 μg/ml, 0.66% ethanol) or vehicle (0.66% ethanol) in drinking water over 4 weeks (six animals per group). Bone parameters were assessed by micro-CT, sub-micron absorption tomography and serum markers of bone metabolism. Osteoblast and osteoclast gene expression was assessed by quantitative RT-PCR. RESULTS Wild type mice receiving corticosterone developed marked trabecular bone loss with reduced bone volume to tissue volume (BV/TV), trabecular thickness (Tb.Th) and trabecular number (Tb.N). Histomorphometric analysis revealed a dramatic reduction in osteoblast numbers. This was matched by a significant reduction in the serum marker of osteoblast bone formation P1NP and gene expression of the osteoblast markers Alp and Bglap. In contrast, 11β-HSD1 KO mice receiving corticosterone demonstrated almost complete protection from trabecular bone loss, with partial protection from the decrease in osteoblast numbers and markers of bone formation relative to WT counterparts receiving corticosterone. CONCLUSIONS This study demonstrates that 11β-HSD1 plays a critical role in GIOP, mediating GC suppression of anabolic bone formation and reduced bone volume secondary to a decrease in osteoblast numbers. This raises the intriguing possibility that therapeutic inhibitors of 11β-HSD1 may be effective in preventing GIOP in patients receiving therapeutic steroids.
Collapse
Affiliation(s)
- C. G. Fenton
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - C. L. Doig
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - S. Fareed
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - A. Naylor
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - A. P. Morrell
- Aston Institute of Materials Research, Aston University, Birmingham, UK
| | - O. Addison
- Institute of Clinical Sciences, University of Birmingham, Birmingham, UK
- Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada
| | - C. Wehmeyer
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - C. D. Buckley
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
| | - M. S. Cooper
- ANZAC Research Institute, University of Sydney, Sydney, Australia
| | - G. G. Lavery
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - K. Raza
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
- Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK
| | - R. S. Hardy
- Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| |
Collapse
|
46
|
Kelly CN, Francovich J, Julmi S, Safranski D, Guldberg RE, Maier HJ, Gall K. Fatigue behavior of As-built selective laser melted titanium scaffolds with sheet-based gyroid microarchitecture for bone tissue engineering. Acta Biomater 2019; 94:610-626. [PMID: 31125727 DOI: 10.1016/j.actbio.2019.05.046] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/15/2019] [Accepted: 05/19/2019] [Indexed: 12/24/2022]
Abstract
Selective laser melting (SLM) has enabled the production of porous titanium structures with biological and mechanical properties that mimic bone for orthopedic applications. These porous structures have a reduced effective stiffness which leads to improved mechanotransduction between the implant and bone. Triply periodic minimal surfaces (TMPS), specifically the sheet-based gyroid structures, have improved compressive fatigue resistance due lack of stress concentrations. Sheet-based gyroid microarchitectures also have high surface area, permeability, and zero mean curvature. This study examines the effects of the gyroid microarchitectural design in parallel with SLM parameters on structure and function of as-built titanium alloy (Ti6Al4V ELI) scaffolds. Scaffold design was varied by varying unit cell size and wall thickness to produce scaffolds with porosity within the range of trabecular bone (50-90%). Manufacturer's default and refined laser parameters were used to examine the effect of input energy density on mechanical properties. Scaffolds exhibited a stretching-dominated deformation behavior under both compressive and tensile loading, and porosity dependent stiffness and strength. Internal void defects were observed within the walls of the gyroids structure, serving as sites for crack initiation leading to failure. Refinement of laser parameters resulted in increased compressive and tensile fatigue behavior, particularly for thicker walled gyroid microarchitectures, while thinner walls showed no significant change. The observed properties of as-built gyroid sheet microarchitectures indicates that these structures have potential for use in bone engineering applications. Furthermore, these results highlight the importance of parallel design and processing optimization for complex sheet-based porous structures produced via SLM. STATEMENT OF SIGNIFICANCE: Selective laser melting (SLM) is an additive manufacturing technology which produces complex porous scaffolds for orthopedic applications. Titanium alloy scaffolds with novel sheet-based gyroid microarchitectures were produced via SLM and evaluated for mechanical performance including fatigue behavior. Gyroid structures are function based topologies have been hypothesized to be promising for tissue engineering scaffolds due to the high surface area to volume ratio, zero mean curvature, and high permeability. This paper presents the effects of scaffold design and processing parameters in parallel, a novel study in the field on bone tissue scaffolds produced via additive manufacturing. Additionally, the comparison of compressive and tensile behavior of scaffolds presented is important in characterizing behavior and failure mechanisms of porous metals which undergo complex loading in orthopedic applications.
Collapse
Affiliation(s)
- Cambre N Kelly
- Department of Biomedical Engineering, Duke University, United States.
| | - Jaedyn Francovich
- Department of Mechanical Engineering and Materials Science, Duke University, United States
| | - S Julmi
- Institut für Werkstoffkunde (Materials Science), Leibniz Universität Hannover, Germany
| | - David Safranski
- School of Materials Science and Engineering, Georgia Institute of Technology, United States
| | - Robert E Guldberg
- Knight Campus for Accelerating Scientific Impact, University of Oregon, United States
| | - Hans J Maier
- Institut für Werkstoffkunde (Materials Science), Leibniz Universität Hannover, Germany
| | - Ken Gall
- Department of Biomedical Engineering, Duke University, United States; Department of Mechanical Engineering and Materials Science, Duke University, United States
| |
Collapse
|
47
|
Chanpaisaeng K, Reyes Fernandez PC, Fleet JC. Dietary calcium intake and genetics have site-specific effects on peak trabecular bone mass and microarchitecture in male mice. Bone 2019; 125:46-53. [PMID: 31078711 PMCID: PMC6604851 DOI: 10.1016/j.bone.2019.05.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/20/2019] [Accepted: 05/08/2019] [Indexed: 11/30/2022]
Abstract
Trabecular bone (Tb) is used for rapid exchange of calcium (Ca) in times of physiologic need and the site-specific characteristics of Tb may explain why certain sites are more vulnerable to osteoporosis. We hypothesized that peak trabecular bone mass (PTBM) and Tb microarchitecture are differentially regulated by dietary Ca intake, genetics, or Gene-by-Diet (GxD) interactions at the distal femur and the fifth lumbar (L5) vertebra. Male mice from 62 genetically distinct lines were fed basal (0.5%) or low (0.25%) Ca diets from 4 to 12 wks of age. Afterwards, the right femur and L5 vertebra were removed and trabecular bone was analyzed by μCT. In mice fed the basal diet, bone volume fraction (BV/TV), trabecular number (Tb.N), and connectivity density (Conn.D) were significantly higher in the L5 vertebra than femur. Femur Tb had a weaker, more rod-like structure than the L5 vertebrae while mice fed the low Ca diet developed rod-like structures at both sites. Dietary Ca restriction also caused a greater relative reduction of Tb.N and Conn.D in the femur than L5 vertebra, i.e. it was more harmful to the integrity of Tb microarchitecture in femur. Genetics was a major determinant of Tb at both sites, e.g. heritability of BV/TV on the basal diet = 0.65 (femur) and 0.68 (L5 vertebra). However, while GxD interactions altered the impact of dietary Ca restriction on Tb parameters at both sites, the effect was not uniform, e.g. some lines had site-specific responses to Ca restriction. The significance of our work is that there are site-specific effects of dietary Ca restriction and genetics that work independently and interactively to influence the attainment of PTBM and Tb microarchitecture.
Collapse
Affiliation(s)
- Krittikan Chanpaisaeng
- Department of Nutrition Science, Purdue University, USA; Interdepartmental Graduate Nutrition Program (INP), Purdue University, USA
| | - Perla C Reyes Fernandez
- Department of Nutrition Science, Purdue University, USA; Interdepartmental Graduate Nutrition Program (INP), Purdue University, USA
| | - James C Fleet
- Department of Nutrition Science, Purdue University, USA; Interdepartmental Graduate Nutrition Program (INP), Purdue University, USA.
| |
Collapse
|
48
|
Costa S, Fairfield H, Reagan MR. Inverse correlation between trabecular bone volume and bone marrow adipose tissue in rats treated with osteoanabolic agents. Bone 2019; 123:211-223. [PMID: 30954729 PMCID: PMC6559822 DOI: 10.1016/j.bone.2019.03.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 03/26/2019] [Accepted: 03/28/2019] [Indexed: 12/28/2022]
Abstract
There is currently an unmet clinical need for improved treatments for skeletal diseases such as osteoporosis and cancer-induced bone disease. This is due in part to a paucity of novel targets and an incomplete understanding of the mechanisms of action for established therapies. We defined the effects of anabolic treatments on bone and the bone marrow adipocyte (BMA). Sclerostin-neutralizing antibodies (Scl-Ab), romosozumab, human parathyroid hormone (hPTH, 1-34), and hPTH/hPTHrP analogues (e.g. teriparatide and abaloparatide) stimulate bone formation and have been studied in clinical trials for severe osteoporosis. In this study, eight-week-old male and female rats were administered vehicle, Scl-Ab (3 mg/kg or 50 mg/kg) weekly, or hPTH (1-34) (75 μg/kg) daily for 4 or 26 weeks. Histological analyses of distal femura were performed using a novel ImageJ method for trabecular bone and bone marrow adipose tissue (BMAT). Adipocyte number, circumference, and total adipose area were compared within the tissue area (T.Ar) or the marrow area (Ma.Ar), (defined as the T.Ar minus the trabecular bone area). After 26 weeks of treatment, a significant inverse correlation between bone and tissue adiposity (total adipocyte area divided by T.Ar) were observed in males and females (p < 0.0001). However, there were no significant correlations between bone and marrow adiposity (total adipocyte area divided by Ma.Ar) for either sex after 26 weeks of treatments. Scl-Ab treatments also resulted in no effect on adipocytes based on marrow adiposity for either sex after 26 weeks. However, chronic hPTH treatments significantly reduced adipocyte number and adiposity within the T.Ar and within the Ma.Ar in males. Overall, our data suggest that with long-term treatment, Scl-Abs decrease total tissue adiposity mainly by increasing trabecular bone, resulting in an overall reduction in the space in which adipocytes can reside. These findings were determined by developing and comparing two different methods of assessment of the marrow cavity, defined to either include or exclude trabecular bone. Thus, researchers should consider which adiposity measurement is more informative and relevant for their studies. Overall, our findings should help design improved therapies or combination treatments to target a potential new contributor to bone diseases: the bone marrow adipocyte.
Collapse
Affiliation(s)
- Samantha Costa
- Maine Medical Center Research Institute, Scarborough, ME, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME, USA; Tufts University School of Medicine, Boston, MA, USA
| | - Heather Fairfield
- Maine Medical Center Research Institute, Scarborough, ME, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME, USA; Tufts University School of Medicine, Boston, MA, USA
| | - Michaela R Reagan
- Maine Medical Center Research Institute, Scarborough, ME, USA; University of Maine Graduate School of Biomedical Science and Engineering, Orono, ME, USA; Tufts University School of Medicine, Boston, MA, USA.
| |
Collapse
|
49
|
Yoon SH, Grynpas M, Mitchell J. Intermittent PTH treatment improves bone and muscle in glucocorticoid treated Mdx mice: A model of Duchenne Muscular Dystrophy. Bone 2019; 121:232-242. [PMID: 30716510 DOI: 10.1016/j.bone.2019.01.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/21/2019] [Accepted: 01/31/2019] [Indexed: 01/07/2023]
Abstract
Duchenne Muscular Dystrophy (DMD) is a progressive muscle disorder caused by genetic mutations of the dystrophin encoding gene. In the absence of functional dystrophin, DMD patients suffer from muscle inflammation and wasting, as well as compromised bone health with increased risk of fracture. The use of high dose glucocorticoids (GC) as the standard therapy also contributes to bone fragility. This study examined the effects of intermittent, daily administered parathyroid hormone (iPTH), an approved bone anabolic therapy, on growing bone and dystrophic muscle in the presence and absence of prednisone treatment using the Mdx mouse model of DMD. Five-weeks of prednisone treatment in Mdx mice decreased cortical bone thickness and area (p < 0.001), with a large increase in endocortical osteoclasts that were significantly improved by PTH treatment (p < 0.001). GC-induced decreases in cortical bone toughness and modulus were improved with iPTH therapy (p < 0.05). Mdx mice showed significantly less bone mass in trabecular compartments of lumbar vertebrae and iPTH treatment, with or without glucocorticoids, significantly improved structural and material properties of this bone. Prednisone improved grip strength and endurance of treadmill running, which were maintained and further improved, respectively, in co-treated Mdx mice. Altogether, our study demonstrates that iPTH therapy significantly ameliorated GC-induced bone loss and maintained or further enhanced the positive effects of GCs on dystrophic muscle function. These findings give insight into the potential for use of teriparatide to treat growing bone in children with DMD.
Collapse
Affiliation(s)
- Sung-Hee Yoon
- Department of Pharmacology and Toxicology, University of Toronto, ON, Canada; Lunenfeld-Tanenbaum Research Institute, Mount Sinai Health System, Toronto, ON, Canada
| | - Marc Grynpas
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Health System, Toronto, ON, Canada
| | - Jane Mitchell
- Department of Pharmacology and Toxicology, University of Toronto, ON, Canada.
| |
Collapse
|
50
|
Ruiz Wills C, Olivares AL, Tassani S, Ceresa M, Zimmer V, González Ballester MA, Del Río LM, Humbert L, Noailly J. 3D patient-specific finite element models of the proximal femur based on DXA towards the classification of fracture and non-fracture cases. Bone 2019; 121:89-99. [PMID: 30611923 DOI: 10.1016/j.bone.2019.01.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 12/21/2018] [Accepted: 01/01/2019] [Indexed: 11/18/2022]
Abstract
Osteoporotic bone fractures reduce quality of life and drastically increase mortality. Minimally irradiating imaging techniques such as dual-energy X-ray absorptiometry (DXA) allow assessment of bone loss through the use of bone mineral density (BMD) as descriptor. Yet, the accuracy of fracture risk predictions remains limited. Recently, DXA-based 3D modelling algorithms were proposed to analyse the geometry and BMD spatial distribution of the proximal femur. This study hypothesizes that such approaches can benefit from finite element (FE)-based biomechanical analyses to improve fracture risk prediction. One hundred and eleven subjects were included in this study and stratified in two groups: (a) 62 fracture cases, and (b) 49 non-fracture controls. Side fall was simulated using a static peak load that depended on patient mass and height. Local mechanical fields were calculated based on relationships between tissue stiffness and BMD. The area under the curve (AUC) of the receiver operating characteristic method evaluated the ability of calculated biomechanical descriptors to discriminate fracture and control cases. The results showed that the major principal stress was better discriminator (AUC > 0.80) than the volumetric BMD (AUC ≤ 0.70). High discrimination capacity was achieved when the analysis was performed by bone type, zone of fracture and gender/sex (AUC of 0.91 for women, trabecular bone and trochanter area), and outcomes suggested that the trabecular bone is critical for fracture discrimination. In conclusion, 3D FE models derived from DXA scans might significantly improve the prediction of hip fracture risk; providing a new insight for clinicians to use FE simulations in clinical practice for osteoporosis management.
Collapse
Affiliation(s)
| | | | - Simone Tassani
- BCN MedTech, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Mario Ceresa
- BCN MedTech, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Veronika Zimmer
- BCN MedTech, Universitat Pompeu Fabra (UPF), Barcelona, Spain; School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | | | | | | | - Jérôme Noailly
- BCN MedTech, Universitat Pompeu Fabra (UPF), Barcelona, Spain
| |
Collapse
|