51
|
Stefanopoulos D, Papaioannou NA, Papavassiliou AG, Mastorakos G, Vryonidou A, Michou A, Dontas IA, Lyritis G, Kassi E, Tournis S. A contemporary therapeutic approach to bone disease in beta-thalassemia - a review. J Frailty Sarcopenia Falls 2018; 3:13-25. [PMID: 32300690 PMCID: PMC7155348 DOI: 10.22540/jfsf-03-013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2018] [Indexed: 01/19/2023] Open
Abstract
Homozygous beta-thalassemia represents a serious hemoglobinopathy, in which an amazing prolongation in the survival rate of patients has been achieved over recent decades. A result of this otherwise positive evolution is the fact that bone problems have become a major issue in this group of patients. Through an in-depth review of the related literature, the purpose of this study is to present and comment on the totality of the data that have been published to date pertaining to the prevention and treatment of thalassemia bone-disease, focusing on: the contribution of diet and lifestyle, the treatment of hematologic disease and its complications, the management of hypercalciuria, the role of vitamins and minerals and the implementation of anti-osteoporosis medical regimen. In order to comprehensively gather the above information, we mainly reviewed the international literature through the PubMed database, searching for the preventive and therapeutic data that have been published pertaining to thalassemia bone-disease over the last twenty-nine years. There is no doubt that thalassemia bone-disease is a complication of a multi-factorial etiopathology, which does not follow the rules of classical postmenopausal osteoporosis. Bisphosphonates have been the first line of treatment for many years now, with varied and usually satisfactory results. In addition, over the last few years, more data have arisen for the use of denosumab, teriparatide, and other molecules that are in the clinical trial phase, in beta-thalassemia.
Collapse
Affiliation(s)
- Dimitrios Stefanopoulos
- Laboratory for Research of the Musculoskeletal System “Th. Garofalidis”, KAT Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Nikolaos A. Papaioannou
- Laboratory for Research of the Musculoskeletal System “Th. Garofalidis”, KAT Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | - Athanassios G. Papavassiliou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - George Mastorakos
- Second Department of Obstetrics and Gynecology, National and Kapodistrian University of Athens, Aretaieion Hospital, Athens, Greece
| | - Andromachi Vryonidou
- Department of Endocrinology, Diabetes & Metabolism, General Hospital Korgialenio-Benakio, Athens, Greece
| | - Aikaterini Michou
- Deparment of Endocrinology, “Elena Venizelou” General Hospital, Athens, Greece
| | - Ismene A. Dontas
- Laboratory for Research of the Musculoskeletal System “Th. Garofalidis”, KAT Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| | | | - Eva Kassi
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- First Department of Internal Medicine - Medical School- Laikon Hospital - National and Kapodistrian University of Athens, Greece
| | - Symeon Tournis
- Laboratory for Research of the Musculoskeletal System “Th. Garofalidis”, KAT Hospital, National and Kapodistrian University of Athens, School of Medicine, Athens, Greece
| |
Collapse
|
52
|
De Sanctis V, Soliman AT, Elsefdy H, Soliman N, Bedair E, Fiscina B, Kattamis C. Bone disease in β thalassemia patients: past, present and future perspectives. Metabolism 2018; 80:66-79. [PMID: 28987275 DOI: 10.1016/j.metabol.2017.09.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 09/07/2017] [Accepted: 09/10/2017] [Indexed: 01/23/2023]
Abstract
Bone disorders in patients with thalassemia major (TM) and intermedia (TI) constitute complex conditions that result from various factors affecting the growing skeleton. Although much progress has been made in our understanding of the natural history, pathogenesis and clinical manifestations of β- and δβ-thalassemia, bone manifestations remain a puzzle for the clinician. In this review, we outline the key points in the current literature on the pathogenesis and management of bone disease in patients with TM and TI who were conventionally treated in recent decades with frequent blood transfusions and iron chelation. Prevention, early recognition and treatment are the most effective strategies for the management of bone disease in these patients. However, further studies are required to maintain optimal bone health for both TM and TI patients. Studying bone disease in patients with non-transfusion dependent TI, which seems to worsen considerably with age, is important to delineate the effect of the disease itself on bone health without the intervening factors of transfusions, iron intoxication and chelation.
Collapse
Affiliation(s)
- Vincenzo De Sanctis
- Pediatric and Adolescent Outpatient Clinic, Quisisana Hospital, Ferrara, Italy.
| | - Ashraf T Soliman
- Department of Pediatrics, Division of Endocrinology, Hamad General Hospital, Doha, Qatar; Department of Pediatrics, Division of Endocrinology, Alexandria University Children's Hospital, Alexandria, Egypt
| | - Heba Elsefdy
- Department of Pediatrics, Ain Shams University, Cairo, Egypt
| | - Nada Soliman
- Primary Health Care, Ministry of Health, Alexandria, Egypt
| | - Elsaid Bedair
- Department of Radiology, AlKhor Hospital, Hamad Medical Center, Doha, Qatar
| | | | - Christos Kattamis
- First Department of Paediatrics, University of Athens, Athens, Greece
| |
Collapse
|
53
|
Basu S, Ghosh A, Barui A, Basu B. (Fe/Sr) Codoped Biphasic Calcium Phosphate with Tailored Osteoblast Cell Functionality. ACS Biomater Sci Eng 2018; 4:857-871. [DOI: 10.1021/acsbiomaterials.7b00813] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Aritri Ghosh
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| | - Ananya Barui
- Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur, Howrah 711103, West Bengal, India
| | | |
Collapse
|
54
|
Gupta N, Santhiya D, Murugavel S, Kumar A, Aditya A, Ganguli M, Gupta S. Effects of transition metal ion dopants (Ag, Cu and Fe) on the structural, mechanical and antibacterial properties of bioactive glass. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2017.11.023] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
55
|
Bone abnormalities in young male rats with iron intervention and possible mechanisms. Chem Biol Interact 2018; 279:21-26. [DOI: 10.1016/j.cbi.2017.11.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/16/2017] [Accepted: 11/03/2017] [Indexed: 11/24/2022]
|
56
|
Yuan Z, Liu P, Liang Y, Tao B, He Y, Hao Y, Yang W, Hu Y, Cai K. Investigation of osteogenic responses of Fe-incorporated micro/nano-hierarchical structures on titanium surfaces. J Mater Chem B 2018; 6:1359-1372. [DOI: 10.1039/c7tb03071a] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Fe incorporated micro/nano topographical titanium substrates are fabricated to synergistically regulate osteogenic responses in vitro and osseointegration in vivo.
Collapse
Affiliation(s)
- Zhang Yuan
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Peng Liu
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Yanan Liang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Bailong Tao
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Ye He
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Yansha Hao
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Weihu Yang
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Yan Hu
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology of Ministry of Education
- College of Bioengineering
- Chongqing University
- Chongqing 400044
- China
| |
Collapse
|
57
|
Liu J, Qian L, Guo L, Feng Y. Studying hepcidin and related pathways in osteoblasts using a mouse model with insulin receptor substrate 1‑loss of function. Mol Med Rep 2017; 17:350-357. [PMID: 29115497 DOI: 10.3892/mmr.2017.7876] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Accepted: 07/11/2017] [Indexed: 11/05/2022] Open
Abstract
Hepcidin is one of the most important proteins in iron metabolism. In the present study, its role in iron metabolism and the associated signaling pathways involved was investigated in a mouse model with insulin receptor substrate 1‑loss of function (IRS‑/‑), and osteoblasts in the iron overload condition. Protein expression levels of hepcidin, interleukin 6 (IL‑6), bone morphogenetic protein receptor 1α and ferritin demonstrated a significant increase in the liver of the IRS‑/‑ mice compared with the IRS+/‑ and IRS+/+ mice. Hepcidin levels in the jaw bone were also increased in the IRS‑/‑ mice (although not significantly). Furthermore, mRNA expression levels of bone morphogenetic protein 6 (BMP6) and ferroportin (FPN) were significantly increased in the liver of the IRS‑/‑ mice compared with the other two models, but no significant differences were observed in the transferrin receptor mRNA expression levels. Additionally, the mRNA expression of hepcidin, FPN and IL‑6 was upregulated in osteoblasts after ferric ammonium citrate exposure, while the mRNA expression of BMP6 was inhibited. Collectively, the results of the present study indicated that hepcidin is involved in iron metabolism in IRS‑1‑/‑ mice via the signaling pathways involving BMP6 and IL‑6. Furthermore, hepcidin is also involved in iron metabolism in osteoblasts under iron overload conditions. Therefore, hepcidin and its associated signaling pathway proteins may represent potential targets for the treatment of conditions associated with iron overload.
Collapse
Affiliation(s)
- Jia Liu
- Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Ling Qian
- Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Linna Guo
- Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| | - Yunzhi Feng
- Department of Stomatology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China
| |
Collapse
|
58
|
Xifra G, Moreno-Navarrete JM, Moreno M, Ricart W, Fernández-Real JM. Obesity status influences the relationship among serum osteocalcin, iron stores and insulin sensitivity. Clin Nutr 2017; 37:2091-2096. [PMID: 29050649 DOI: 10.1016/j.clnu.2017.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 09/15/2017] [Accepted: 10/02/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND & AIMS Increased iron stores significantly influence the clinical course of several chronic metabolic diseases. Recent studies have shown that iron overload decreases osteocalcin. We aimed to explore the relationship among osteocalcin, iron stores and insulin sensitivity. METHODS Extensive clinical and laboratory measurements, including serum ferritin, cross-linked C-telopeptide of type I collagen (CTX) and osteocalcin (OC) concentrations, were analyzed in 250 adult consecutive Caucasian men. Insulin sensitivity was evaluated through frequently sampled intravenous glucose tolerance tests with minimal model analysis. RESULTS Circulating serum ferritin were negatively associated with serum OC and CTX (p = 0.004 and p = 0.045 respectively). In all subjects as a whole, BMI and ferritin contributed to explain 5.2% of OC variance after controlling for age and smoking status. However, the association between OC and insulin sensitivity remained significant only in lean subjects (BMI < 25 kg/m2, r = 0.468; p = 0.006) whereas the link between serum ferritin concentration and OC and CTX were significant only in overweight/obese subjects (BMI ≥ 25 kg/m2, r = -0.229; p = 0.002 and r = -0.196; p = 0.008, respectively). CONCLUSIONS The association of circulating osteocalcin with parameters of insulin sensitivity and iron stores were dependent on obesity status. Increased iron stores could contribute to the detrimental metabolic effects of overweight and obesity on bone.
Collapse
Affiliation(s)
- Gemma Xifra
- Department of Diabetes, Endocrinology and Nutrition (UDEN), Institut d'Investigació Biomédica de Girona (IdIBGi), CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBERobn, CB06/03/0010) and Instituto de Salud Carlos III (ISCIII), Girona, Spain
| | - José María Moreno-Navarrete
- Department of Diabetes, Endocrinology and Nutrition (UDEN), Institut d'Investigació Biomédica de Girona (IdIBGi), CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBERobn, CB06/03/0010) and Instituto de Salud Carlos III (ISCIII), Girona, Spain
| | - María Moreno
- Department of Diabetes, Endocrinology and Nutrition (UDEN), Institut d'Investigació Biomédica de Girona (IdIBGi), CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBERobn, CB06/03/0010) and Instituto de Salud Carlos III (ISCIII), Girona, Spain
| | - Wifredo Ricart
- Department of Diabetes, Endocrinology and Nutrition (UDEN), Institut d'Investigació Biomédica de Girona (IdIBGi), CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBERobn, CB06/03/0010) and Instituto de Salud Carlos III (ISCIII), Girona, Spain
| | - José Manuel Fernández-Real
- Department of Diabetes, Endocrinology and Nutrition (UDEN), Institut d'Investigació Biomédica de Girona (IdIBGi), CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBERobn, CB06/03/0010) and Instituto de Salud Carlos III (ISCIII), Girona, Spain.
| |
Collapse
|
59
|
Postmenopausal Iron Overload Exacerbated Bone Loss by Promoting the Degradation of Type I Collagen. BIOMED RESEARCH INTERNATIONAL 2017; 2017:1345193. [PMID: 28620614 PMCID: PMC5460413 DOI: 10.1155/2017/1345193] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 04/27/2017] [Indexed: 01/07/2023]
Abstract
117 postmenopausal women were divided into Normal, Bone loss (BL), and Osteoporosis group. Compared with Normal group (120.96 ± 43.18 μg/L), the serum ferritin (Fer) in BL (223.37 ± 130.27 μg/L) and Osteoporosis group (307.50 ± 161.48 μg/L) was significantly increased (p < 0.05). Fer level was negatively correlated with BMD (p < 0.01). TRACP levels in Osteoporosis group (4.37 ± 1.69 U/L) were significantly higher than Normal group (4.10 ± 1.60 U/L, p < 0.05). ALP levels in Osteoporosis group (112.06 ± 62.05 U/L) were significantly upregulated compared with Normal group (80.22 ± 14.94 U/L, p < 0.05). β-CTX and PINP were the degradation products of type I collagen. β-CTX levels in Osteoporosis group (667.90 ± 316.55 ng/L) were significantly increased compared with Normal group (406.06 ± 112.12 ng/L, p < 0.05). PINP levels in Osteoporosis group (78.03 ± 37.31 μg/L) were significantly higher than Normal group (37.60 ± 13.17 μg/L, p < 0.01). More importantly, there was a positive correlation between serum Fer and PINP (p < 0.01). Serum Fer showed a positive correlation of serum β-CTX (p < 0.01). The overloaded iron improved the degradation of type I collagen.
Collapse
|
60
|
Ke JY, Cen WJ, Zhou XZ, Li YR, Kong WD, Jiang JW. Iron overload induces apoptosis of murine preosteoblast cells via ROS and inhibition of AKT pathway. Oral Dis 2017; 23:784-794. [PMID: 28248443 DOI: 10.1111/odi.12662] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 02/17/2017] [Accepted: 02/21/2017] [Indexed: 01/03/2023]
Affiliation(s)
- J-Y Ke
- Department of Stomatology; The First Affiliated Hospital of Jinan University; Guangzhou China
- Department of Orthodontics; Foshan Chancheng Stomatological Hospital; Foshan China
| | - W-J Cen
- Department of Stomatology; The First Affiliated Hospital of Jinan University; Guangzhou China
- Department of Stomatology; Guangzhou Development District Hospital; Guangzhou China
| | - X-Z Zhou
- Department of Stomatology; The First Affiliated Hospital of Jinan University; Guangzhou China
| | - Y-R Li
- Department of Orthodontics; Foshan Chancheng Stomatological Hospital; Foshan China
| | - W-D Kong
- Department of Stomatology; The First Affiliated Hospital of Jinan University; Guangzhou China
| | - J-W Jiang
- Department of Biochemistry; Medical College; Jinan University; Guangzhou China
| |
Collapse
|
61
|
Xu Z, Sun W, Li Y, Ling S, Zhao C, Zhong G, Zhao D, Song J, Song H, Li J, You L, Nie G, Chang Y, Li Y. The regulation of iron metabolism by hepcidin contributes to unloading-induced bone loss. Bone 2017; 94:152-161. [PMID: 27686598 DOI: 10.1016/j.bone.2016.09.023] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 09/02/2016] [Accepted: 09/25/2016] [Indexed: 12/20/2022]
Abstract
Iron overload inhibits osteoblast function and promotes osteoclastogenesis. Hepcidin plays an important role in this process. The changes in iron content and the regulation of hepcidin under unloading-induced bone loss remain unknown. A hindlimb suspension model was adopted to simulate unloading-induced bone loss in mice. The results showed that iron deposition in both liver and bone was markedly increased in hindlimb unloaded mice, and was accompanied by the upregulation of osteoclast activity and downregulation of osteoblast activity. The iron chelator deferoxamine mesylate (DFO) reduced the iron content in bone and alleviated unloading-induced bone loss. The increased iron content in bone was mainly a result of the upregulation of transferrin receptor 1 (TfR1) and divalent metal transporter 1 with iron response element (DMT1+IRE), rather than changes in the iron transporter ferroportin 1 (FPN1). The hepcidin level in the liver was significantly higher, while the FPN1 level in the duodenum was substantially reduced. However, there were no changes in the FPN1 level in bone tissue. During hindlimb unloading, downregulation of hepcidin by siRNA increased iron uptake in bone and liver, which aggravated unloading-induced bone loss. In summary, these data show that unloading-induced bone loss was orchestrated by iron overload and coupled with the regulation of hepcidin by the liver.
Collapse
Affiliation(s)
- Zi Xu
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang 050024, China; State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China
| | - Weijia Sun
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang 050024, China; State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China
| | - Yuheng Li
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China
| | - Shukuan Ling
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China
| | - Chenyang Zhao
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang 050024, China; State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China
| | - Guohui Zhong
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China
| | - Dingsheng Zhao
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China
| | - Jinping Song
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China
| | - Hailin Song
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Jinqiao Li
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China
| | - Linhao You
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang 050024, China
| | - Guangjun Nie
- Key Laboratory of Chinese Academy of Sciences for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Yanzhong Chang
- Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life Science, Hebei Normal University, Shijiazhuang 050024, China.
| | - Yingxian Li
- State Key Laboratory of Space Medicine Fundamentals and Application, China Astronaut Research and Training Center, Beijing 100094, China.
| |
Collapse
|
62
|
Liu F, Zhang WL, Meng HZ, Cai ZY, Yang MW. Regulation of DMT1 on autophagy and apoptosis in osteoblast. Int J Med Sci 2017; 14:275-283. [PMID: 28367088 PMCID: PMC5370290 DOI: 10.7150/ijms.17860] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 12/21/2016] [Indexed: 01/11/2023] Open
Abstract
Iron overload has recently been associated with the changes in the bone microstructure that occur in osteoporosis. However, the effect of iron overload on osteoblasts is unclear. The purpose of this study was to explore the function of divalent metal transporter 1 (DMT1) in the pathological processes of osteoporosis. Osteoblast hFOB1.19 cells were cultured in medium supplemented with different concentrations (0, 50, 100, 200, 300, 400, 500 μmol/L) of ferric ammonium citrate (FAC) as a donor of ferric ions. We used western blotting and immunofluorescence to determine the levels of DMT1 after treatment with FAC. Apoptosis was evaluated by detecting the levels of cleaved caspase 3, BCL2, and BAX with western blotting. Autophagy was evaluated by detecting the levels of LC3 with western blotting and immunofluorescence. Beclin-1 expression was also assessed with western blotting. The autophagy inhibitor 3-methyladenine was used to determine whether autophagy affects the apoptosis induced by FAC. Our results show that FAC increased the levels of DMT1, upregulated the expression of BCL2, and downregulated the apoptosis-related proteins cleaved caspase 3 and BAX. Both LC3I/LC3II levels and beclin-1 were also increased, indicating that FAC increases the accumulation of autophagosomes in hFOB1.19 cells. FAC-induced autophagy was increased by the apoptosis inhibitor 3-MA but was reduced in DMT1 shRNA hFOB1.19 cells. These results suggest that the increased expression of DMT1 induces iron overload and iron overload induces osteoblast autophagy and apoptosis, thus affecting the pathological processes of osteoporosis. Clarifying the mechanisms underlying the effects of DMT1 will allow the identification of novel targets for the prevention and treatment of osteoporosis.
Collapse
Affiliation(s)
- Fei Liu
- Department of Orthopedics, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Wei-Lin Zhang
- Department of Orthopedics, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Hong-Zheng Meng
- Department of Orthopedics, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Zheng-Yu Cai
- Department of Orthopedics, the First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Mao-Wei Yang
- Department of Orthopedics, the First Hospital of China Medical University, Shenyang, Liaoning, China
| |
Collapse
|
63
|
Xiong Y, Wei J, Zeng C, Yang T, Li H, Deng Z, Zhang Y, Ding X, Yang Y, Lei G. Association between dietary iron intake and bone mineral density: A cross-sectional study in Chinese population. Nutr Diet 2016. [DOI: 10.1111/1747-0080.12255] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yilin Xiong
- Department of Orthopaedics; Xiangya Hospital; Central South University; Changsha Hunan Province China
| | - Jie Wei
- Health Management Centre; Xiangya Hospital; Central South University; Changsha Hunan Province China
- Department of Epidemiology and Health Statistics; School of Public Health; Central South University; Changsha Hunan Province China
| | - Chao Zeng
- Department of Orthopaedics; Xiangya Hospital; Central South University; Changsha Hunan Province China
| | - Tuo Yang
- Department of Orthopaedics; Xiangya Hospital; Central South University; Changsha Hunan Province China
| | - Hui Li
- Department of Orthopaedics; Xiangya Hospital; Central South University; Changsha Hunan Province China
| | - Zhenhan Deng
- Department of Orthopaedics; Xiangya Hospital; Central South University; Changsha Hunan Province China
| | - Yi Zhang
- Department of Orthopaedics; Xiangya Hospital; Central South University; Changsha Hunan Province China
| | - Xiang Ding
- Department of Orthopaedics; Xiangya Hospital; Central South University; Changsha Hunan Province China
| | - Ye Yang
- Department of Orthopaedics; Xiangya Hospital; Central South University; Changsha Hunan Province China
| | - Guanghua Lei
- Department of Orthopaedics; Xiangya Hospital; Central South University; Changsha Hunan Province China
| |
Collapse
|
64
|
Ahn SH, Lee S, Kim H, Lee SH, Kim BJ, Koh JM. Higher serum ferritin level and lower femur neck strength in women at the stage of bone loss (≥ 45 years of age): The Fourth Korea National Health and Nutrition Examination Survey (KNHANES IV). Endocr Res 2016; 41:334-342. [PMID: 27045342 DOI: 10.3109/07435800.2016.1155600] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
PURPOSE Despite the clear effect of iron on bone metabolism, most clinical studies related to bone health have only focused on bone mineral density (BMD). In the present study, we investigated the relationship between serum ferritin and composite indices of femur neck strength via a population-based, cross-sectional study using the Korea National Health and Nutrition Examination Survey (KNHANES). METHODS Our study series included 693 women at the stage of bone loss (≥ 45 years of age), defined based on the observed patterns of age-related BMD changes in the KNHANES. Geometric bone structure properties, including hip axis length (HAL) and femur neck width (FNW), were measured using hip dual-energy X-ray absorptiometry scans and were combined with BMD, body weight, and height to create composite indices of femur neck strength relative to load in three different failure modes: compression (CSI), bending (BSI), and impact strength indices (ISI). RESULTS After adjustment for age, body mass index (BMI), lifestyle factors, serum 25-hydroxyvitamin D, calcium and phosphorus intake, diabetes, and menopause status, multiple regression analyses revealed that serum ferritin was inversely associated with the BMD values at the lumbar spine and femur neck, and the femur neck cortical thickness. Importantly, in all adjustment models, higher serum ferritin was consistently associated with the lower values for all three femur neck composite indices, such as CSI, BSI, and ISI. CONCLUSIONS These data provide the first clinical evidence that increased total body iron stores reflected by higher serum ferritin may be associated with the decrease of bone strength relative to load.
Collapse
Affiliation(s)
- Seong Hee Ahn
- a Department of Endocrinology , Inha University School of Medicine , Incheon , Republic of Korea
| | - Seokhyeon Lee
- b Division of Endocrinology and Metabolism , Asan Medical Center, University of Ulsan College of Medicine , Seoul , Republic of Korea
| | - Hyeonmok Kim
- b Division of Endocrinology and Metabolism , Asan Medical Center, University of Ulsan College of Medicine , Seoul , Republic of Korea
| | - Seung Hun Lee
- b Division of Endocrinology and Metabolism , Asan Medical Center, University of Ulsan College of Medicine , Seoul , Republic of Korea
| | - Beom-Jun Kim
- b Division of Endocrinology and Metabolism , Asan Medical Center, University of Ulsan College of Medicine , Seoul , Republic of Korea
| | - Jung-Min Koh
- b Division of Endocrinology and Metabolism , Asan Medical Center, University of Ulsan College of Medicine , Seoul , Republic of Korea
| |
Collapse
|
65
|
Diagnosis and Management of Cirrhosis-Related Osteoporosis. BIOMED RESEARCH INTERNATIONAL 2016; 2016:1423462. [PMID: 27840821 PMCID: PMC5093239 DOI: 10.1155/2016/1423462] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Accepted: 10/03/2016] [Indexed: 12/20/2022]
Abstract
Management of cirrhosis complications has greatly improved, increasing survival and quality of life of the patients. Despite that, some of these complications are still overlooked and scarcely treated, particularly those that are not related to the liver. This is the case of osteoporosis, the only cirrhosis complication that is not solved after liver transplantation, because bone loss often increases after immunosuppressant therapy. In this review, the definitions of bone conditions in cirrhotic patients are analyzed, focusing on the more common ones and on those that have the largest impact on this population. Risk factors, physiopathology, diagnosis, screening strategies, and treatment of osteoporosis in cirrhotic patients are discussed, presenting the more striking data on this issue. Therapies used for particular conditions, such as primary biliary cirrhosis and liver transplantation, are also presented.
Collapse
|
66
|
Baschant U, Rauner M, Balaian E, Weidner H, Roetto A, Platzbecker U, Hofbauer LC. Wnt5a is a key target for the pro-osteogenic effects of iron chelation on osteoblast progenitors. Haematologica 2016; 101:1499-1507. [PMID: 27540134 DOI: 10.3324/haematol.2016.144808] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 08/10/2016] [Indexed: 11/09/2022] Open
Abstract
Iron overload due to hemochromatosis or chronic blood transfusions has been associated with the development of osteoporosis. However, the impact of changes in iron homeostasis on osteoblast functions and the underlying mechanisms are poorly defined. Since Wnt signaling is a critical regulator of bone remodeling, we aimed to analyze the effects of iron overload and iron deficiency on osteoblast function, and further define the role of Wnt signaling in these processes. Therefore, bone marrow stromal cells were isolated from wild-type mice and differentiated towards osteoblasts. Exposure of the cells to iron dose-dependently attenuated osteoblast differentiation in terms of mineralization and osteogenic gene expression, whereas iron chelation with deferoxamine promoted osteogenic differentiation in a time- and dose-dependent manner up to 3-fold. Similar results were obtained for human bone marrow stromal cells. To elucidate whether the pro-osteogenic effect of deferoxamine is mediated via Wnt signaling, we performed a Wnt profiler array of deferoxamine-treated osteoblasts. Wnt5a was amongst the most highly induced genes. Further analysis revealed a time- and dose-dependent induction of Wnt5a being up-regulated 2-fold after 48 h at 50 μM deferoxamine. Pathway analysis using specific inhibitors revealed that deferoxamine utilized the phosphatidylinositol-3-kinase and nuclear factor of activated T cell pathways to induce Wnt5a expression. Finally, we confirmed the requirement of Wnt5a in the deferoxamine-mediated osteoblast-promoting effects by analyzing the matrix mineralization of Wnt5a-deficient cells. The promoting effect of deferoxamine on matrix mineralization in wild-type cells was completely abolished in Wnt5a-/- cells. Thus, these data demonstrate that Wnt5a is critical for the pro-osteogenic effects of iron chelation using deferoxamine.
Collapse
Affiliation(s)
- Ulrike Baschant
- Department of Medicine III, Technische Universität Dresden, Saxony, Germany
| | - Martina Rauner
- Department of Medicine III, Technische Universität Dresden, Saxony, Germany
| | - Ekaterina Balaian
- Department of Medicine I, Technische Universität Dresden, Saxony, Germany
| | - Heike Weidner
- Department of Medicine I, Technische Universität Dresden, Saxony, Germany
| | - Antonella Roetto
- Department of Clinical and Biological Science, University of Torino, Italy
| | - Uwe Platzbecker
- Department of Medicine I, Technische Universität Dresden, Saxony, Germany
| | - Lorenz C Hofbauer
- Department of Medicine III, Technische Universität Dresden, Saxony, Germany .,Center for Regenerative Therapies Dresden, Saxony, Germany.,Center for Healthy Aging, Technische Universität Dresden, Saxony, Germany
| |
Collapse
|
67
|
Pelusi C, Gasparini DI, Bianchi N, Pasquali R. Endocrine dysfunction in hereditary hemochromatosis. J Endocrinol Invest 2016; 39:837-47. [PMID: 26951056 DOI: 10.1007/s40618-016-0451-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 02/21/2016] [Indexed: 10/22/2022]
Abstract
Hereditary hemochromatosis (HH) is a genetic disorder of iron overload and subsequent organ damage. Five types of HH are known, classified by age of onset, genetic cause, clinical manifestations and mode of inheritance. Except for the rare form of juvenile haemochromatosis, symptoms do not usually appear until after decades of progressive iron loading and may be triggered by environmental and lifestyle factors. Despite the last decades discovery of genetic and phenotype diversity of HH, early studies showed a frequent involvement of the endocrine glands where diabetes and hypogonadism are the most common encountered endocrinopathies. The pathogenesis of diabetes is still relatively unclear, but the main mechanisms include the loss of insulin secretory capacity and insulin resistance secondary to liver damage. The presence of obesity and/or genetic predisposition may represent addictive risk factor for the development of this metabolic disease. Although old cases of primary gonad involvement are described, hypogonadism is mainly secondary to selective deposition of iron on the gonadotropin-producing cells of the pituitary gland, leading to hormonal impaired secretion. Cases of hypopituitarism or selected tropin defects, and abnormalities of adrenal, thyroid and parathyroid glands, even if rare, are reported. The prevalence of individual gland dysfunction varies enormously within studies for several bias due to small numbers of and selected cases analyzed, mixed genotypes and missing data on medical history. Moreover, in the last few years early screening and awareness of the disease among physicians have allowed hemochromatosis to be diagnosed in most cases at early stages when patients have no symptoms. Therefore, the clinical presentation of this disease has changed significantly and the recognized common complications are encountered less frequently. This review summarizes the current knowledge on HH-associated endocrinopathies.
Collapse
Affiliation(s)
- C Pelusi
- Division of Endocrinology, Department of Medical and Surgical Sciences, University Alma Mater Studiorum, S. Orsola-Malpighi Hospital, Via Massarenti 9, Bologna, Italy
| | - D I Gasparini
- Division of Endocrinology, Department of Medical and Surgical Sciences, University Alma Mater Studiorum, S. Orsola-Malpighi Hospital, Via Massarenti 9, Bologna, Italy
| | - N Bianchi
- Division of Endocrinology, Department of Medical and Surgical Sciences, University Alma Mater Studiorum, S. Orsola-Malpighi Hospital, Via Massarenti 9, Bologna, Italy
| | - R Pasquali
- Division of Endocrinology, Department of Medical and Surgical Sciences, University Alma Mater Studiorum, S. Orsola-Malpighi Hospital, Via Massarenti 9, Bologna, Italy.
| |
Collapse
|
68
|
Villalvilla A, García-Martín A, Largo R, Gualillo O, Herrero-Beaumont G, Gómez R. The adipokine lipocalin-2 in the context of the osteoarthritic osteochondral junction. Sci Rep 2016; 6:29243. [PMID: 27385438 PMCID: PMC4935838 DOI: 10.1038/srep29243] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 06/14/2016] [Indexed: 12/11/2022] Open
Abstract
Obesity and osteoarthritis (OA) form a vicious circle in which obesity contributes to cartilage destruction in OA, and OA-associated sedentary behaviour promotes weight gain. Lipocalin-2 (LCN2), a novel adipokine with catabolic activities in OA joints, contributes to the obesity and OA pathologies and is associated with other OA risk factors. LCN2 is highly induced in osteoblasts in the absence of mechanical loading, but its role in osteoblast metabolism is unclear. Therefore, because osteochondral junctions play a major role in OA development, we investigated the expression and role of LCN2 in osteoblasts and chondrocytes in the OA osteochondral junction environment. Our results showed that LCN2 expression in human osteoblasts and chondrocytes decreased throughout osteoblast differentiation and was induced by catabolic and inflammatory factors; however, TGF-β1 and IGF-1 reversed this induction. LCN2 reduced osteoblast viability in the presence of iron and enhanced the activity of MMP-9 released by osteoblasts. Moreover, pre-stimulated human osteoblasts induced LCN2 expression in human chondrocytes, but the inverse was not observed. Thus, LCN2 is an important catabolic adipokine in osteoblast and chondrocyte metabolism that is regulated by differentiation, inflammation and catabolic and anabolic stimuli, and LCN2 expression in chondrocytes is regulated in a paracrine manner after osteoblast stimulation.
Collapse
Affiliation(s)
- Amanda Villalvilla
- Bone and Joint Research Unit, IIS-Fundación Jiménez Díaz, UAM, Avda Reyes Católicos, Madrid, 28040, Spain
| | - Adela García-Martín
- Department of Bioengineering, Universidad Carlos III de Madrid, CIEMAT-CIBERER, IIS-Fundación Jiménez Díaz, Madrid, 28040, Spain
| | - Raquel Largo
- Bone and Joint Research Unit, IIS-Fundación Jiménez Díaz, UAM, Avda Reyes Católicos, Madrid, 28040, Spain
| | - Oreste Gualillo
- Research Laboratory 9 (NEIRID LAB), Institute of Medical Research, SERGAS, Santiago University Clinical Hospital, Santiago de Compostela, 15706, Spain
| | - Gabriel Herrero-Beaumont
- Bone and Joint Research Unit, IIS-Fundación Jiménez Díaz, UAM, Avda Reyes Católicos, Madrid, 28040, Spain
| | - Rodolfo Gómez
- Musculoskeletal Pathology Laboratory, Institute IDIS, Santiago University Clinical Hospital, Santiago de Compostela, 15706, Spain
| |
Collapse
|
69
|
Iron overload inhibits osteogenic commitment and differentiation of mesenchymal stem cells via the induction of ferritin. Biochim Biophys Acta Mol Basis Dis 2016; 1862:1640-9. [PMID: 27287253 DOI: 10.1016/j.bbadis.2016.06.003] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 06/02/2016] [Accepted: 06/05/2016] [Indexed: 01/01/2023]
Abstract
Osteogenic differentiation of multipotent mesenchymal stem cells (MSCs) plays a crucial role in bone remodeling. Numerous studies have described the deleterious effect of iron overload on bone density and microarchitecture. Excess iron decreases osteoblast activity, leading to impaired extracellular matrix (ECM) mineralization. Additionally, iron overload facilitates osteoclast differentiation and bone resorption. These processes contribute to iron overload-associated bone loss. In this study we investigated the effect of iron on osteogenic differentiation of human bone marrow MSCs (BMSCs), the third player in bone remodeling. We induced osteogenic differentiation of BMSCs in the presence or absence of iron (0-50μmol/L) and examined ECM mineralization, Ca content of the ECM, mRNA and protein expressions of the osteogenic transcription factor runt-related transcription factor 2 (Runx2), and its targets osteocalcin (OCN) and alkaline phosphatase (ALP). Iron dose-dependently attenuated ECM mineralization and decreased the expressions of Runx2 and OCN. Iron accomplished complete inhibition of osteogenic differentiation of BMSCs at 50μmol/L concentration. We demonstrated that in response to iron BMSCs upregulated the expression of ferritin. Administration of exogenous ferritin mimicked the anti-osteogenic effect of iron, and blocked the upregulation of Runx2, OCN and ALP. Iron overload in mice was associated with elevated ferritin and decreased Runx2 mRNA levels in compact bone osteoprogenitor cells. The inhibitory effect of iron is specific toward osteogenic differentiation of MSCs as neither chondrogenesis nor adipogenesis were influenced by excess iron. We concluded that iron and ferritin specifically inhibit osteogenic commitment and differentiation of BMSCs both in vitro and in vivo.
Collapse
|
70
|
Iron overload enhances human mesenchymal stromal cell growth and hampers matrix calcification. Biochim Biophys Acta Gen Subj 2016; 1860:1211-23. [DOI: 10.1016/j.bbagen.2016.01.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 01/27/2016] [Accepted: 01/31/2016] [Indexed: 01/19/2023]
|
71
|
He J, He FL, Li DW, Liu YL, Yin DC. A novel porous Fe/Fe-W alloy scaffold with a double-layer structured skeleton: Preparation, in vitro degradability and biocompatibility. Colloids Surf B Biointerfaces 2016; 142:325-333. [DOI: 10.1016/j.colsurfb.2016.03.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 02/06/2016] [Accepted: 03/01/2016] [Indexed: 12/29/2022]
|
72
|
Doyard M, Chappard D, Leroyer P, Roth MP, Loréal O, Guggenbuhl P. Decreased Bone Formation Explains Osteoporosis in a Genetic Mouse Model of Hemochromatosiss. PLoS One 2016; 11:e0148292. [PMID: 26829642 PMCID: PMC4734777 DOI: 10.1371/journal.pone.0148292] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 01/15/2016] [Indexed: 01/19/2023] Open
Abstract
Osteoporosis may complicate iron overload diseases such as genetic hemochromatosis. However, molecular mechanisms involved in the iron-related osteoporosis remains poorly understood. Recent in vitro studies support a role of osteoblast impairment in iron-related osteoporosis. Our aim was to analyse the impact of excess iron in Hfe-/- mice on osteoblast activity and on bone microarchitecture. We studied the bone formation rate, a dynamic parameter reflecting osteoblast activity, and the bone phenotype of Hfe-/- male mice, a mouse model of human hemochromatosis, by using histomorphometry. Hfe-/- animals were sacrificed at 6 months and compared to controls. We found that bone contains excess iron associated with increased hepatic iron concentration in Hfe-/- mice. We have shown that animals with iron overload have decreased bone formation rate, suggesting a direct impact of iron excess on active osteoblasts number. For bone mass parameters, we showed that iron deposition was associated with bone loss by producing microarchitectural impairment with a decreased tendency in bone trabecular volume and trabecular number. A disorganization of trabecular network was found with marrow spaces increased, which was confirmed by enhanced trabecular separation and star volume of marrow spaces. These microarchitectural changes led to a loss of connectivity and complexity in the trabecular network, which was confirmed by decreased interconnectivity index and increased Minkowski's fractal dimension. Our results suggest for the first time in a genetic hemochromatosis mouse model, that iron overload decreases bone formation and leads to alterations in bone mass and microarchitecture. These observations support a negative effect of iron on osteoblast recruitment and/or function, which may contribute to iron-related osteoporosis.
Collapse
Affiliation(s)
- Mathilde Doyard
- INSERM UMR U991, F- 35033, Rennes, France
- Université de Rennes 1, IFR 140, F- 35043, Rennes, France
| | - Daniel Chappard
- GEROM Groupe Etude Remodelage Osseux et bioMatériaux LHEA, IRIS-IBM, Institut de biologie en santé, CHU, F- 49933, Angers, France
| | - Patricia Leroyer
- INSERM UMR U991, F- 35033, Rennes, France
- Université de Rennes 1, IFR 140, F- 35043, Rennes, France
| | | | - Olivier Loréal
- INSERM UMR U991, F- 35033, Rennes, France
- Université de Rennes 1, IFR 140, F- 35043, Rennes, France
- Service des Maladies du Foie, Hôpital Pontchaillou, CHU, F- 35033, Rennes, France
| | - Pascal Guggenbuhl
- INSERM UMR U991, F- 35033, Rennes, France
- Université de Rennes 1, IFR 140, F- 35043, Rennes, France
- Service de Rhumatologie, Hôpital Sud, CHU, F- 35033, Rennes, France
- * E-mail:
| |
Collapse
|
73
|
Effects of long-term risedronate treatment on serum ferritin levels in postmenopausal women with osteoporosis. Menopause 2016; 23:55-9. [DOI: 10.1097/gme.0000000000000480] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
|
74
|
Mousa SM, Ibrahim AA, Al Adsani RA. Serum Ferritin: Is It an Independent Predictor of Reduced Bone Mineral Density among Elderly Women? ACTA ACUST UNITED AC 2016. [DOI: 10.4236/aar.2016.56014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
75
|
Saraon T, Katz SD. Targeting Iron Deficiency Anemia in Heart Failure. Prog Cardiovasc Dis 2015; 58:407-15. [PMID: 26657161 DOI: 10.1016/j.pcad.2015.11.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 11/27/2015] [Indexed: 12/12/2022]
Abstract
Iron deficiency is common in heart failure (HF) patients, and is associated with increased risk of adverse clinical outcomes. Clinical trials of intravenous iron supplementation in iron-deficient HF patients have demonstrated short-term improvement in functional capacity and quality of life. In some trials, the benefits of iron supplementation were independent of the hemoglobin levels. Additional investigations of iron supplementation are needed to characterize the mechanisms contributing to clinical benefit and long-term safety in HF.
Collapse
Affiliation(s)
- Tajinderpal Saraon
- Leon H. Charney Division of Cardiology, New York University Langone Medical Center, New York, NY
| | - Stuart D Katz
- Leon H. Charney Division of Cardiology, New York University Langone Medical Center, New York, NY.
| |
Collapse
|
76
|
Povlsen SD, Povlsen B. Low-intensity pulsed ultrasound treatment as an alternative to vascular bone graft surgery for a 5-year-long ulnar non-union in a patient with haemochromatosis. BMJ Case Rep 2015; 2015:bcr-2015-211950. [PMID: 26531737 DOI: 10.1136/bcr-2015-211950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
We present the case of a 75-year-old woman with haemochromatosis who developed a 5-year-long right ulnar non-union after a shortening osteotomy to correct a malunited Colles' fracture. Standard surgical treatment for ulnar non-unions was attempted on 19 March 2008 and again on 20 April 2009, but the non-union persisted on 8 May 2012, as confirmed by CT scan. Vascular bone grafting and refixation was then considered, but the patient declined this extensive operation, instead choosing to try non-invasive low-intensity pulsed ultrasound treatment with an Exogen device. Just 4 months later, complete union as confirmed by CT scan was achieved. This is the first case demonstrating the efficacy of ultrasound treatment for long-standing non-unions resistant to surgery in patients with haemochromatosis, a disorder where iron deposition can provide suboptimal circumstances for bone healing. Our finding suggests that low-intensity pulsed ultrasound devices could be used as a first-line treatment for stable non-unions instead of revision surgery.
Collapse
Affiliation(s)
| | - Bo Povlsen
- Faculty of Medicine, London Hand Clinic, London, UK
| |
Collapse
|
77
|
Dermience M, Lognay G, Mathieu F, Goyens P. Effects of thirty elements on bone metabolism. J Trace Elem Med Biol 2015; 32:86-106. [PMID: 26302917 DOI: 10.1016/j.jtemb.2015.06.005] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 05/07/2015] [Accepted: 06/19/2015] [Indexed: 01/19/2023]
Abstract
The human skeleton, made of 206 bones, plays vital roles including supporting the body, protecting organs, enabling movement, and storing minerals. Bones are made of organic structures, intimately connected with an inorganic matrix produced by bone cells. Many elements are ubiquitous in our environment, and many impact bone metabolism. Most elements have antagonistic actions depending on concentration. Indeed, some elements are essential, others are deleterious, and many can be both. Several pathways mediate effects of element deficiencies or excesses on bone metabolism. This paper aims to identify all elements that impact bone health and explore the mechanisms by which they act. To date, this is the first time that the effects of thirty minerals on bone metabolism have been summarized.
Collapse
Affiliation(s)
- Michael Dermience
- University of Liège - Gembloux Agro Bio Tech, Unit Analyzes, Quality, Risks, Laboratory of Analytical Chemistry, Passage des Déportés, 2, B-5030 Gembloux, Belgium.
| | - Georges Lognay
- University of Liège - Gembloux Agro Bio Tech, Unit Analyzes, Quality, Risks, Laboratory of Analytical Chemistry, Passage des Déportés, 2, B-5030 Gembloux, Belgium.
| | - Françoise Mathieu
- Kashin-Beck Disease Fund asbl-vzw, Rue de l'Aunee, 6, B-6953 Forrieres, Belgium.
| | - Philippe Goyens
- Kashin-Beck Disease Fund asbl-vzw, Rue de l'Aunee, 6, B-6953 Forrieres, Belgium; Department and Laboratory of Pediatric, Free Universities of Brussels, Brussels, Belgium.
| |
Collapse
|
78
|
Xiao W, Beibei F, Guangsi S, Yu J, Wen Z, Xi H, Youjia X. Iron overload increases osteoclastogenesis and aggravates the effects of ovariectomy on bone mass. J Endocrinol 2015; 226:121-34. [PMID: 26116610 DOI: 10.1530/joe-14-0657] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/22/2015] [Indexed: 01/19/2023]
Abstract
Postmenopausal osteoporosis is a metabolic disease associated with estrogen deficiency. The results of numerous studies have revealed the positive correlation between iron accumulation and postmenopausal osteoporotic status. Although the results of previous studies have indicated that estrogen or iron alone have an effect on bone metabolism, their combined effects are not well defined. Using an in vivo mouse model, we found that bone mass was minimally affected by an excess of iron in the presence of estrogen. Once the source of estrogen was removed (ovariectomy), iron accumulation significantly decreased bone mass. These effects were accompanied by fluctuations in the level of oxidative stress. To determine whether these effects were related to bone formation or bone resorption, primary osteoblasts (OBs), RAW264.7 cells, and bone-marrow-derived macrophages were used for in vitro experiments. We found that iron accumulation did inhibit the activity of OBs. However, estrogen had little effect on this inhibition. In contrast, iron promoted osteoclast differentiation through the production of reactive oxygen species. Estrogen, a powerful reactive oxygen scavenger, suppressed this effect in osteoclasts. Our data provided direct evidence that iron affected the bone mass only in the absence of estrogen. The inhibitory effect of estrogen on iron-induced osteopenia was particularly relevant to bone resorption rather than bone formation.
Collapse
Affiliation(s)
- Wang Xiao
- Departments of OrthopaedicsGynaecologyThe Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, 215004 Suzhou, ChinaDepartment of Orthopaedic Research InstitutionSoochow University, 215004 Suzhou, ChinaDepartment of MedicineNew York University School of Medicine, 10016 New York, New York, USA
| | - Fei Beibei
- Departments of OrthopaedicsGynaecologyThe Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, 215004 Suzhou, ChinaDepartment of Orthopaedic Research InstitutionSoochow University, 215004 Suzhou, ChinaDepartment of MedicineNew York University School of Medicine, 10016 New York, New York, USA
| | - Shen Guangsi
- Departments of OrthopaedicsGynaecologyThe Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, 215004 Suzhou, ChinaDepartment of Orthopaedic Research InstitutionSoochow University, 215004 Suzhou, ChinaDepartment of MedicineNew York University School of Medicine, 10016 New York, New York, USA
| | - Jiang Yu
- Departments of OrthopaedicsGynaecologyThe Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, 215004 Suzhou, ChinaDepartment of Orthopaedic Research InstitutionSoochow University, 215004 Suzhou, ChinaDepartment of MedicineNew York University School of Medicine, 10016 New York, New York, USA
| | - Zhang Wen
- Departments of OrthopaedicsGynaecologyThe Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, 215004 Suzhou, ChinaDepartment of Orthopaedic Research InstitutionSoochow University, 215004 Suzhou, ChinaDepartment of MedicineNew York University School of Medicine, 10016 New York, New York, USA
| | - Huang Xi
- Departments of OrthopaedicsGynaecologyThe Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, 215004 Suzhou, ChinaDepartment of Orthopaedic Research InstitutionSoochow University, 215004 Suzhou, ChinaDepartment of MedicineNew York University School of Medicine, 10016 New York, New York, USA
| | - Xu Youjia
- Departments of OrthopaedicsGynaecologyThe Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, 215004 Suzhou, ChinaDepartment of Orthopaedic Research InstitutionSoochow University, 215004 Suzhou, ChinaDepartment of MedicineNew York University School of Medicine, 10016 New York, New York, USA
| |
Collapse
|
79
|
Zhou J, Chen KM, Zhi DJ, Xie QJ, Xian CJ, Li HY. Effects of pyrite bioleaching solution of Acidithiobacillus ferrooxidans on viability, differentiation and mineralization potentials of rat osteoblasts. Arch Pharm Res 2015; 38:2228-40. [DOI: 10.1007/s12272-015-0650-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/08/2015] [Indexed: 11/30/2022]
|
80
|
Zhao L, Wang Y, Wang Z, Xu Z, Zhang Q, Yin M. Effects of dietary resveratrol on excess-iron-induced bone loss via antioxidative character. J Nutr Biochem 2015; 26:1174-82. [PMID: 26239832 DOI: 10.1016/j.jnutbio.2015.05.009] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Revised: 04/29/2015] [Accepted: 05/12/2015] [Indexed: 01/08/2023]
Abstract
Estrogen deficiency has been considered to be a major cause of osteoporosis, but recent epidemiological evidence and mechanistic studies have indicated that aging and the associated increase in reactive oxygen species (ROS) are the proximal pathogenic factors. Through ROS-mediated reactions, iron can induce disequilibrium of oxidation and antioxidation and can cause bone loss in mice. Therefore, we investigated the effects of resveratrol (RES) on bone mineral density, bone microstructure and the osteoblast functions under iron-overload conditions. Excess iron disrupted the antioxidant/prooxidant equilibrium of the mice and induced the defect and the lesion of the bone trabecula as well as disequilibrium between bone formation and bone resorption in iron-overload mice. Oral administration of RES significantly prevented bone loss in the osteoporotic mice. RES reversed the reduction of Runx2, OCN and type I collagen from excess iron; up-regulated the level of FOXO1; and maintained the antioxidant/prooxidant equilibrium in the mice. RES also reduced the ratio of OPG/RANKL in MC3T3-E1 cells and in mice and significantly inhibited subsequent osteoclastogenesis. These results provide new insights into the antiosteoporosis mechanisms of RES through antioxidative effects, suggesting that RES can be considered a potential natural resource for developing medicines or dietary supplements to prevent and treat osteoporosis.
Collapse
Affiliation(s)
- Lu Zhao
- School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, China
| | - Yin Wang
- People's Liberation Army 455 Hospital, Shanghai 200050, China
| | - Zejian Wang
- School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, China
| | - Zheng Xu
- Changzheng Hospital, Shanghai 200003, China
| | - Qiaoyan Zhang
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China.
| | - Ming Yin
- School of Pharmacy, Shanghai Jiaotong University, Shanghai 200240, China.
| |
Collapse
|
81
|
The detrimental effects of iron on the joint: a comparison between haemochromatosis and haemophilia. J Clin Pathol 2015; 68:592-600. [DOI: 10.1136/jclinpath-2015-202967] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 03/29/2015] [Indexed: 12/21/2022]
|
82
|
Wong P, Fuller PJ, Gillespie MT, Kartsogiannis V, Kerr PG, Doery JC, Paul E, Bowden DK, Strauss BJ, Milat F. Thalassemia bone disease: a 19-year longitudinal analysis. J Bone Miner Res 2014; 29:2468-73. [PMID: 24764138 DOI: 10.1002/jbmr.2266] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 04/02/2014] [Accepted: 04/16/2014] [Indexed: 01/19/2023]
Abstract
Thalassemia is an inherited disorder of alpha or beta globin chain synthesis leading to ineffective erythropoiesis requiring chronic transfusion therapy in its most severe form. This leads to iron overload, marrow expansion, and hormonal complications, which are implicated in bone deformity and loss of bone mineral density (BMD). In this 19-year retrospective longitudinal study, the relationships between BMD (determined by dual-energy X-ray absorptiometry) and risk factors for osteoporosis in 277 subjects with transfusion-dependent thalassemia were examined. The mean age at first review was 23.2 ± 11.9 years and 43.7% were male. Hypogonadism was present in 28.9%. Fractures were confirmed in 11.6% of subjects and were more frequent in males (16.5%) compared with females (7.7%). Lumbar spine (LS), femoral neck (FN), and total body (TB) Z-scores were derived. Patients with transfusion-dependent thalassemia had a significant longitudinal decline in BMD at the FN and TB. In the linear mixed-model analysis of BMD and risk factors for bone loss, FN Z-score was more significantly associated with risk factors compared with the LS and TB. The rate of decline at the FN was 0.02 Z-score per year and was 3.85-fold greater in males. The decline in FN Z-score over the last 5 years (years 15 to 19) was 2.5-fold that of the previous 7 years (years 8 to 14) and coincided with a change in iron chelator therapy from desferrioxamine to deferasirox. Hemoglobin (Hb) levels positively correlated with higher TB and LS Z-scores. In conclusion, the FN is the preferred site for follow-up of BMD. Male patients with β-thalassemia experienced a greater loss of BMD and had a higher prevalence of fractures compared with females. Transfusing patients (particularly males) to a higher Hb target may reduce the decline in BMD. Whether deferasirox is implicated in bone loss warrants further study.
Collapse
Affiliation(s)
- Phillip Wong
- Prince Henry's Institute of Medical Research, Clayton, Australia; Department of Endocrinology, Monash Health, Clayton, Australia; Department of Medicine, Monash University, Clayton, Australia
| | | | | | | | | | | | | | | | | | | |
Collapse
|
83
|
Zhao GY, DI DH, Wang B, Zhang P, Xu YJ. Iron regulates the expression of ferroportin 1 in the cultured hFOB 1.19 osteoblast cell line. Exp Ther Med 2014; 8:826-830. [PMID: 25120608 PMCID: PMC4113530 DOI: 10.3892/etm.2014.1823] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Accepted: 06/11/2014] [Indexed: 12/16/2022] Open
Abstract
Iron metabolism is tightly regulated in osteoblasts, and ferroportin 1 (FPN1) is the only identified iron exporter in mammals to date. In the present study, the regulation of FNP1 in human osteoblasts was investigated following various iron treatments. The human osteoblast cell line hFOB 1.19 was treated with ferric ammonium citrate (FAC) or desferrioxamine (DFO) of various concentrations. The intracellular iron ion levels were measured using a confocal laser scanning microscope. In addition, the mRNA and protein expression levels of FPN1 were detected by quantitative polymerase chain reaction, western blot analysis and immunofluorescence. The results demonstrated that increasing iron concentrations via FAC treatment increased the expression of FPN1. By contrast, decreasing the iron concentration by DFO treatment decreased FNP1 expression levels. In addition to demonstrating that the FNP1 expression changed according to the iron concentration, the observations indicated that changes in FPN1 expression may contribute to the maintenance of the intracellular iron balance in osteoblasts.
Collapse
Affiliation(s)
- Guo-Yang Zhao
- Department of Orthopedics, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, P.R. China
| | - Dong-Hua DI
- Department of Orthopedics, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, P.R. China
| | - Bo Wang
- Department of Orthopedics, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212000, P.R. China
| | - Peng Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - You-Jia Xu
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| |
Collapse
|
84
|
Yassin MA, Soliman AT, De Sanctis V, Abdelrahman MO, Aziz Bedair EM, AbdelGawad M. Effects of the anti-receptor activator of nuclear factor kappa B ligand denusomab on beta thalassemia major-induced osteoporosis. Indian J Endocrinol Metab 2014; 18:546-551. [PMID: 25143915 PMCID: PMC4138914 DOI: 10.4103/2230-8210.137516] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
INTRODUCTION Osteoporosis represents the second most common cause of endocrinopathy in patients with beta thalassemia major (BTM). Some drugs proved effective to reduce vertebral and non-vertebral fracture risk. Denosumab is a fully human monoclonal antibody to the receptor activator of nuclear factor kappa B ligand (RANKL), a member of the tumor necrosis factor receptor superfamily essential for osteoclastogenesis. The efficacy and safety of denosumab in BTM-induced osteoporosis has not been tested. OBJECTIVE To evaluate the efficacy and safety of anti-RANKL on the biochemical and radiological parameters of bone mineralization in patients with BTM-induced osteoporosis. DESIGN The study population was selected using the random sampling method from the patient's database of our thalassemia clinic. Transfusion-dependent BTM patients above 18 years with no history of treatment with bisphosphonates were randomly selected. Bone mineral density (BMD) of the lumbar spine (LS) and right femoral neck (FN) were measured by dual energy X-ray absorption (DEXA) scan using a calibrated method. Independent factors likely to be associated with low bone mass were determined and included in the analysis to ascertain possible associations. PATIENTS AND METHODS We studied 30 patients with BTM-induced osteoporosis as per World Health Organization criteria (T Score of less than - 1.0 being defined as osteopenic and a T Score of less than - 2.5 being referred as osteoporotic). 19 males and 11 females aged between 18 and 32 years, with full pubertal development (Tanner's stage 5) at the time of the study. Their mean serum ferritin concentration was 3557 ng ± 1488 ng/ml. Every patient underwent DEXA scan as a baseline and after 12 months of denosumab therapy. Biochemical evaluation including serum concentrations of creatinine, Na, K, calcium, phosphorus, parathormone, bone specific alkaline phosphatase and type 1 collagen carboxy telopetide (ICCT) using enzyme-linked immunosorbent assay (Nordic Bioscience Diagnostics A/S) was done at baseline, after a month and then every 3 months for 12 months after starting denosumab. 60 mg of denosumab was administered subcutaneously twice yearly for a year. The mean BMD T Scores at baseline were -2.7 at the LS and -2.1 at the FN. RESULTS Denosumab therapy for a year was associated with a significant increase in BMD of 9.2% (95% confidence interval [CI], 8.2-10.1) at the LS and 6.0% (95% CI, 5.2-6.7) at the FN. Denosumab treatment decreased serum ICCT levels by 56% at 1 month and normalized them in all patients at 1 year. Significant correlations were found between BMD T Score before and 1 year after denosumab in LS (r = 0.752, P < 0.001) and FN (r = 0.758 P < 0.001), respectively. The most common side effects were pain in the back and extremities (12%) and nausea (10%). Asymptomatic hypocalcaemia occurred in two patients. CONCLUSION Denosumab therapy for a year significantly increased BMD density at LS and FN of patients with BTM and was associated with a rapid and sustained reduction in ICCT levels. Further studies are required to confirm long-term effects of this therapy.
Collapse
Affiliation(s)
| | - Ashraf T. Soliman
- Department of Pediatrics, University of Alexandria, Alexandria, Egypt
| | - Vincenzo De Sanctis
- Department of Pediatrics and Pediatric and Adolescent Outpatient Clinic, Quisisana Hospital, 44121 Ferrara, Italy
| | | | | | - Manal AbdelGawad
- Department of Pediatrics, University of Alexandria, Alexandria, Egypt
| |
Collapse
|
85
|
Chen L, Zhu Z, Peng X, Wang Y, Wang Y, Chen M, Wang Q, Jin J. Hepatic magnetic resonance imaging with T2* mapping of ovariectomized rats: correlation between iron overload and postmenopausal osteoporosis. Eur Radiol 2014; 24:1715-24. [DOI: 10.1007/s00330-014-3178-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 02/27/2014] [Accepted: 04/07/2014] [Indexed: 12/17/2022]
|
86
|
Chen B, Yan YL, Liu C, Bo L, Li GF, Wang H, Xu YJ. Therapeutic effect of deferoxamine on iron overload-induced inhibition of osteogenesis in a zebrafish model. Calcif Tissue Int 2014; 94:353-60. [PMID: 24414856 DOI: 10.1007/s00223-013-9817-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 11/07/2013] [Indexed: 12/22/2022]
Abstract
Osteoporosis results from an imbalance in bone remodeling, in which osteoclastic bone resorption exceeds osteoblastic bone formation. Iron has recently been recognized as an independent risk factor for osteoporosis. Reportedly, excess iron could promote osteoclast differentiation and bone resorption through the production of reactive oxygen species (ROS). We evaluated the effect of iron on osteoblast differentiation and bone formation in zebrafish and further investigated the potential benefits of deferoxamine (DFO), a powerful iron chelator, in iron-overloaded zebrafish. The zebrafish model of iron overload described in this study demonstrated an apparent inhibition of bone formation, accompanied by decreased expression of osteoblast-specific genes (runx2a, runx2b, osteocalcin, osteopontin, ALP, and collagen type I). The negative effect of iron on osteoblastic activity and bone formation could be attributed to increased ROS generation and oxidative stress. Most importantly, we revealed that DFO was capable of removing whole-body iron and attenuating oxidative stress in iron-overloaded larval zebrafish, which facilitated larval recovery from the reductions in bone formation and osteogenesis induced by iron overload.
Collapse
Affiliation(s)
- Bin Chen
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, 1055 Sanxiang Road, Suzhou, 215004, China
| | | | | | | | | | | | | |
Collapse
|
87
|
Sun L, Guo W, Yin C, Zhang S, Qu G, Hou Y, Rong H, Ji H, Liu S. Hepcidin deficiency undermines bone load-bearing capacity through inducing iron overload. Gene 2014; 543:161-5. [PMID: 24561287 DOI: 10.1016/j.gene.2014.02.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 01/24/2014] [Accepted: 02/04/2014] [Indexed: 12/21/2022]
Abstract
Osteoporosis is one of the leading disorders among aged people. Bone loss results from a number of physiological alterations, such as estrogen decline and aging. Meanwhile, iron overload has been recognized as a risk factor for bone loss. Systemic iron homeostasis is fundamentally governed by the hepcidin-ferroportin regulatory axis, where hepcidin is the key regulator. Hepcidin deficiency could induce a few disorders, of which iron overload is the most representative phenotype. However, there was little investigation of the effects of hepcidin deficiency on bone metabolism. To this end, hepcidin-deficient (Hamp1(-/-)) mice were employed to address this issue. Our results revealed that significant iron overload was induced in Hamp1(-/-) mice. Importantly, significant decreases of maximal loading and maximal bending stress were found in Hamp1(-/-) mice relative to wildtype (WT) mice. Moreover, the levels of the C-telopeptide of type I collagen (CTX-1) increased in Hamp1(-/-) mice. Therefore, hepcidin deficiency resulted in a marked reduction of bone load-bearing capacity likely through enhancing bone resorption, suggesting a direct correlation between hepcidin deficiency and bone loss. Targeting hepcidin or the pathway it modulates may thus represent a therapeutic for osteopenia or osteoporosis.
Collapse
Affiliation(s)
- Li Sun
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, China; State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Wenli Guo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Chunyang Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Shuping Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Guangbo Qu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yanli Hou
- Shandong Institute of Endocrine and Metabolic Diseases, Shandong Academy of Medical Sciences, Jinan 250062, China
| | - Haiqin Rong
- Shandong Institute of Endocrine and Metabolic Diseases, Shandong Academy of Medical Sciences, Jinan 250062, China
| | - Hong Ji
- Shandong Institute of Endocrine and Metabolic Diseases, Shandong Academy of Medical Sciences, Jinan 250062, China
| | - Sijin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| |
Collapse
|
88
|
Budis H, Kalisinska E, Lanocha N, Kosik-Bogacka DI. The concentration of manganese, iron and strontium in bone of red fox Vulpes vulpes (L. 1758). Biol Trace Elem Res 2013; 155:361-9. [PMID: 24013932 PMCID: PMC3825612 DOI: 10.1007/s12011-013-9809-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 08/26/2013] [Indexed: 11/23/2022]
Abstract
The aims of the study were to determine manganese (Mn), iron (Fe) and strontium (Sr) concentrations in fox bone samples from north-western Poland and to examine the relationships between the bone Mn, Fe and Sr concentrations and the sex and age of the foxes. In the studied samples of fox cartilage, cartilage with adjacent compact bone, compact bone and spongy bone, the concentrations of the analysed metals had the following descending order: Fe > Sr > Mn. The only exception was in compact bone, in which the concentrations were arranged in the order Sr > Fe > Mn. Manganese concentrations were significantly higher in cartilage, compact bone and cartilage with compact bone than in spongy bone. Iron concentrations were higher in cartilage and spongy bone compared with compact bone. Strontium concentrations were greater in compact bone than in cartilage and spongy bone. The manganese, iron and strontium concentrations in the same type of bone material in many cases correlated with each other, with the strongest correlation (r > 0.70) between Mn and Fe in almost all types of samples. In addition, concentrations of the same metals in different bone materials were closely correlated for Mn and Fe in cartilage and cartilage with adjacent compact bone, and for Sr in compact bone and cartilage with compact bone. In the fox from NW Poland, there were no statistically significant differences in Mn, Fe and Sr in any of the types of bone material between the sexes and immature and adult foxes.
Collapse
Affiliation(s)
- Halina Budis
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich Av. 72, 70-111 Szczecin, Poland
- Department of Health Education, University of Szczecin, Piastow 40B, 71-065 Szczecin, Poland
| | - Elzbieta Kalisinska
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich Av. 72, 70-111 Szczecin, Poland
| | - Natalia Lanocha
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich Av. 72, 70-111 Szczecin, Poland
| | - Danuta I. Kosik-Bogacka
- Department of Biology and Medical Parasitology, Pomeranian Medical University, Powstancow Wielkopolskich Av. 72, 70-111 Szczecin, Poland
| |
Collapse
|
89
|
Kim BJ, Lee SH, Koh JM, Kim GS. The association between higher serum ferritin level and lower bone mineral density is prominent in women ≥45 years of age (KNHANES 2008-2010). Osteoporos Int 2013; 24:2627-37. [PMID: 23592044 DOI: 10.1007/s00198-013-2363-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 03/20/2013] [Indexed: 01/23/2023]
Abstract
SUMMARY Data gathered from a nationally representative cohort demonstrate that higher serum ferritin levels are significantly associated with lower bone mass at various skeletal sites and the increased prevalence of osteoporosis and fractures, especially in women ≥45 years of age. INTRODUCTION Despite extensive in vitro and in vivo studies showing the detrimental effects of iron on bone metabolism, the clinical studies relating to osteoporosis-related phenotypes have not been evaluated extensively. In the present study, we investigated and compared the association between serum ferritin and bone mineral density (BMD), depending on the stratified age groups in both genders. METHODS This is a population-based, cross-sectional study from the Korea National Health and Nutrition Examination Surveys, including 14,017 Koreans (6,817 men and 7,200 women) aged 10-80 years. BMD was measured using dual X-ray absorptiometry, and osteoporosis was diagnosed by the World Health Organization definition. RESULTS Initially, we divided the subjects into three age groups, based on the patterns of age-related BMD changes in this national cohort (i.e., ≤24, 25-44, and ≥45 years old). Serum ferritin concentrations were inversely associated with BMD values at all measured sites after adjustment for confounders, only in women ≥45 years of age (P = 0.041 to <0.001). Furthermore, when we divided these women into serum ferritin quartiles, the odds for prevalent osteoporosis and fractures were 1.55-fold (95 % CI = 1.09-2.23) and 1.52-fold (95 % CI = 1.02-2.27) higher, respectively, in subjects in the highest quartile compared with those in the lowest quartile. CONCLUSIONS These results provide the first clinical evidence that the associations between serum ferritin level and bone parameters could be the most prominent in women ≥45 years of age.
Collapse
Affiliation(s)
- B-J Kim
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap2-Dong, 138-736, Songpa-Gu, Seoul, Korea
| | | | | | | |
Collapse
|
90
|
Zhang J, Zhu Y, Li J, Zhu M, Tao C, Hanagata N. Preparation and characterization of multifunctional magnetic mesoporous calcium silicate materials. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2013; 14:055009. [PMID: 27877616 PMCID: PMC5090379 DOI: 10.1088/1468-6996/14/5/055009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Accepted: 09/26/2013] [Indexed: 06/06/2023]
Abstract
We have prepared multifunctional magnetic mesoporous Fe-CaSiO3 materials using triblock copolymer (P123) as a structure-directing agent. The effects of Fe substitution on the mesoporous structure, in vitro bioactivity, magnetic heating ability and drug delivery property of mesoporous CaSiO3 materials were investigated. Mesoporous Fe-CaSiO3 materials had similar mesoporous channels (5-6 nm) with different Fe substitution. When 5 and 10% Fe were substituted for Ca in mesoporous CaSiO3 materials, mesoporous Fe-CaSiO3 materials still showed good apatite-formation ability and had no cytotoxic effect on osteoblast-like MC3T3-E1 cells evaluated by the elution cell culture assay. On the other hand, mesoporous Fe-CaSiO3 materials could generate heat to raise the temperature of the surrounding environment in an alternating magnetic field due to their superparamagnetic property. When we use gentamicin (GS) as a model drug, mesoporous Fe-CaSiO3 materials release GS in a sustained manner. Therefore, magnetic mesoporous Fe-CaSiO3 materials would be a promising multifunctional platform with bone regeneration, local drug delivery and magnetic hyperthermia.
Collapse
Affiliation(s)
- Jianhua Zhang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, People’s Republic of China
| | - Yufang Zhu
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, People’s Republic of China
| | - Jie Li
- Interdisciplinary Laboratory for Nanoscale Science and Technology, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Min Zhu
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, People’s Republic of China
| | - Cuilian Tao
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, People’s Republic of China
| | - Nobutaka Hanagata
- Interdisciplinary Laboratory for Nanoscale Science and Technology, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
| |
Collapse
|
91
|
Prats M, Font R, García C, Cabré C, Jariod M, Vea AM. Effect of ferric carboxymaltose on serum phosphate and C-terminal FGF23 levels in non-dialysis chronic kidney disease patients: post-hoc analysis of a prospective study. BMC Nephrol 2013; 14:167. [PMID: 23902731 PMCID: PMC3751040 DOI: 10.1186/1471-2369-14-167] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 07/12/2013] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Some parenteral iron therapies have been found to be associated with hypophosphatemia. The mechanism of the decrease in serum phosphate is unknown. The aim of this study is to examine the effect of IV ferric carboxymaltose(FCM) on phosphate metabolism and FGF23 levels in patients with chronic kidney disease(CKD). METHODS This is a post-hoc analysis of a prospective study carried out in 47 non-dialysis CKD patients with iron-deficiency anaemia who received a single 1000 mg injection of FCM. Markers of mineral metabolism (calcium, phosphate, 1,25-dihydroxyvitamin D, PTH and FGF23[c-terminal]) were measured prior to FCM administration and at week 3 and week 12 after FCM administration. Based on the measured levels of serum phosphate at week 3, patiens were classified as hypophosphatemic or non-hypophosphatemic. RESULTS Serum phosphate levels decreased significantly three weeks after FCM administration and remained at lower levels at week 12 (4.24 ± 0.84 vs 3.69 ± 1.10 vs 3.83 ± 0.68 mg/dL, respectively, p < 0.0001. Serum calcium, PTH and 1,25-dihydroxyvitamin D did not change over the course of the study. Serum FGF23 decreased significantly from 442(44.9-4079.2) at baseline to 340(68.5-2603.3) at week 3 and 191.6(51.3-2465.9) RU/mL at week 12, p < 0.0001. Twelve patients were non-hypophosphatemic and 35 hypophosphatemic. FGF23 levels decreased in both groups, whereas no changes were documented in any of the other mineral parameters. CONCLUSIONS In non-dialysis CKD patients, FCM induces reduction in serum phosphate levels that persists for three months. FCM causes a significant decrease in FGF23 levels without changes to other bone metabolism parameters.
Collapse
|
92
|
Anwar K, Ejaz S, Ashraf M, Ahmad N, Javeed A. Monitoring trace elements generated by automobiles: air pollutants with possible health impacts. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:4574-4586. [PMID: 23263758 DOI: 10.1007/s11356-012-1383-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 11/29/2012] [Indexed: 06/01/2023]
Abstract
Major transformations in the environmental composition are principally attributable to the combustion of fuels by automobiles. Motorized gasoline-powered two-stroke auto-rickshaws (TSA) and compressed natural gas (CNG)-powered four-stroke auto-rickshaws (FSA) are potential source of air pollution in south Asia and produce toxic amount of particulate matter (PM) to the environment. In this study, we attempted to characterize elemental pollutants from the PM of TSA and FSA using proton-induced X-ray emission (PIXE) analysis. The observations of the existing investigation recognized significant increase in Al (P < 0.05), P (P < 0.01), and Zn (P < 0.01) from the PM samples of FSA. In addition, the concentrations of Cu, Fe, K, Mg, Na and S were also observed exceeding the recommended National Institute for Environmental Studies limits. On the contrary, increased concentration of Sr and V were observed in the PM samples from TSA. It is generally believed that FSA generates smaller amount of PM but data obtained from FSA are clearly describing that emissions from FSA comprised potentially more toxic substances than TSA. The current research is specific to metropolitan population and has evidently revealed an inconsistent burden of exposure to air pollutants engendered by FSA in urban communities, which could lead to the disruption of several biological activities and may cause severe damage to entire ecological system.
Collapse
Affiliation(s)
- Khaleeq Anwar
- Department of Pharmacology and Toxicology, University of Veterinary and Animal Sciences, Abdul Qadir Jilani Road, Lahore, Pakistan 54600
| | | | | | | | | |
Collapse
|
93
|
He YF, Ma Y, Gao C, Zhao GY, Zhang LL, Li GF, Pan YZ, Li K, Xu YJ. Iron overload inhibits osteoblast biological activity through oxidative stress. Biol Trace Elem Res 2013; 152:292-6. [PMID: 23334864 DOI: 10.1007/s12011-013-9605-z] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Accepted: 01/08/2013] [Indexed: 10/27/2022]
Abstract
Iron overload has recently been connected with bone mineral density in osteoporosis. However, to date, the effect of iron overload on osteoblasts remains poorly understood. The purpose of this study is to examine osteoblast biological activity under iron overload. The osteoblast cells (hFOB1.19) were cultured in a medium supplemented with different concentrations (50, 100, and 200 μM) of ferric ammonium citrate as a donor of ferric ion. Intracellular iron was measured with a confocal laser scanning microscope. Reactive oxygen species (ROS) were detected by 2,7-dichlorofluorescin diacetate fluorophotometry. Osteoblast biological activities were evaluated by measuring the activity of alkaline phosphatase (ALP) and mineralization function. Results indicated that iron overload could consequently increase intracellular iron concentration and intracellular ROS levels in a concentration-dependent manner. Additionally, ALP activity was suppressed, and a decline in the number of mineralized nodules was observed in in vitro cultured osteoblast cells. According to these results, it seems that iron overload probably inhibits osteoblast function through higher oxidative stress following increased intracellular iron concentrations.
Collapse
Affiliation(s)
- Yin-Feng He
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | | | | | | | | | | | | | | | | |
Collapse
|
94
|
Zhao GY, Zhao LP, He YF, Li GF, Gao C, Li K, Xu YJ. A comparison of the biological activities of human osteoblast hFOB1.19 between iron excess and iron deficiency. Biol Trace Elem Res 2012; 150:487-95. [PMID: 23054865 DOI: 10.1007/s12011-012-9511-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Accepted: 09/21/2012] [Indexed: 01/20/2023]
Abstract
Bone metabolism has a close relationship with iron homeostasis. To examine the effects of iron excess and iron deficiency on the biological activities of osteoblast in vitro, human osteoblast cells (hFOB1.19) were incubated in a medium supplemented with 0-200 μmol/L ferric ammonium citrate and 0-20 μmol/L deferoxamine. The intracellular iron was measured by a confocal laser scanning microscope. Proliferation of osteoblasts was evaluated by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide assay. Apoptotic cells were detected using annexin intervention V/PI staining with a flow cytometry. Alkaline phosphatase (ALP) activity was measured using an ALP assay kit. The number of calcified nodules and mineral area was evaluated by von Kossa staining assay. The expressions of type I collagen and osteocalcin of cultured osteoblasts were detected by reverse transcriptase polymerase chain reaction and Western blot. Intracellular reactive oxygen species (ROS) was measured using the oxidation-sensitive dye 2,7-dichlorofluorescin diacetate by flow cytometry. The results indicated that excessive iron inhibited osteoblast activity in a concentration-dependent manner. Low iron concentrations, in contrast, produced a biphasic manner on osteoblasts: mild low iron promoted osteoblast activity, but serious low iron inhibited osteoblast activity. Osteogenesis was optimal in certain iron concentrations. The mechanism underlying biological activity invoked by excessive iron may be attributed to increased intracellular ROS levels.
Collapse
Affiliation(s)
- Guo-Yang Zhao
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Suzhou, 215004, China
| | | | | | | | | | | | | |
Collapse
|
95
|
Deger SM, Erten Y, Pasaoglu OT, Derici UB, Reis KA, Onec K, Pasaoglu H. The effects of iron on FGF23-mediated Ca-P metabolism in CKD patients. Clin Exp Nephrol 2012. [PMID: 23180041 DOI: 10.1007/s10157-012-0725-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Fibroblast growth factor 23 (FGF23) is an important counterregulatory hormone for phosphate homeostasis. Since it has been reported that iron administration induces hypophosphatemic osteomalacia by triggering FGF23 synthesis, we hypothesized that iron administration might lead to a further increase in FGF23, resulting in alterations to Ca-P metabolism in a stage 5 CKD population. METHODS This cross-sectional study was performed in a single center, and involved 73 hemodialysis patients (47.7 ± 15.74 years old, 68.5% men), 29 peritoneal dialysis patients (44.55 ± 15.05 years old, 62.1% men), and 55 healthy (43.57 ± 14.36 years old, 55.6% men) subjects. The dialysis group was subcategorized according to iron therapy administration into users and nonusers. RESULTS The median iFGF23 level was significantly higher in the dialysis population than in the healthy controls [88.050 (25.2-1038.3) pg/ml versus 46.95 (2.4-356) pg/ml (p < 0.001)]. In the dialysis population, a significantly lower median iFGF23 level was observed in iron therapy users than in nonusers [87.6 (25.2-1038.3) versus 119 (51.6-1031); respectively, p = 0.045]. A significant negative association between iron administration and iFGF23 level was revealed by both univariate (r = -0.237, p = 0.016) and multivariate (β = -0.221, p = 0.032) analysis. No association was found between iFGF23 and serum ferritin and iron levels. Also, there was no association between iron therapy and serum phosphate level. CONCLUSION In contrast to what is seen for the general population, this study showed that there was a negative relationship between iron administration and serum iFGF23 level in a dialysis population. We can therefore conclude that if high levels of FGF23 are harmful, iron therapy may have a beneficial effect on bone metabolism by reducing FGF23 levels in a dialysis population.
Collapse
Affiliation(s)
- Serpil Muge Deger
- Department of Internal Medicine, Department of Nephrology, Gazi University Faculty of Medicine, Besevler, Ankara, 06500, Turkey.
| | | | | | | | | | | | | |
Collapse
|
96
|
Jia P, Xu YJ, Zhang ZL, Li K, Li B, Zhang W, Yang H. Ferric ion could facilitate osteoclast differentiation and bone resorption through the production of reactive oxygen species. J Orthop Res 2012; 30:1843-52. [PMID: 22570238 DOI: 10.1002/jor.22133] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 03/29/2012] [Indexed: 02/06/2023]
Abstract
Iron overload is widely regarded as a risk factor for osteoporosis. It has been demonstrated that iron can inhibit osteoblast differentiation. However, the effects of iron on osteoclast differentiation and bone resorption remain controversial. In this study, we found that ferric ion promoted Receptor Activator of Nuclear Factor κ B Ligand (RANKL)-induced osteoclast (OC) formation in both RAW264.7 cells and bone marrow-derived macrophages (BMMs), and this effect was accompanied by elevated levels of reactive oxygen species (ROS) and oxidative stress. Moreover, this effect was attenuated by the administration of antioxidant N-acetyl-L-cysteine (NAC). Therefore, we conclude that ferric ion can promote osteoclast differentiation and bone resorption through the production of ROS.
Collapse
Affiliation(s)
- Peng Jia
- The Second Affiliated Hospital of Soochow University, Department of Orthopaedics, China, Jiangsu Province, 1055 Sanxiang Road, Suzhou, Jiangsu, China
| | | | | | | | | | | | | |
Collapse
|
97
|
Kim BJ, Ahn SH, Bae SJ, Kim EH, Lee SH, Kim HK, Choe JW, Koh JM, Kim GS. Iron overload accelerates bone loss in healthy postmenopausal women and middle-aged men: a 3-year retrospective longitudinal study. J Bone Miner Res 2012; 27:2279-90. [PMID: 22729843 DOI: 10.1002/jbmr.1692] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Despite extensive experimental and animal evidence about the detrimental effects of iron and its overload on bone metabolism, there have been no clinical studies relating iron stores to bone loss, especially in nonpathologic conditions. In the present study, we performed a large longitudinal study to evaluate serum ferritin concentrations in relation to annualized changes in bone mineral density (BMD) in healthy Koreans. A total of 1729 subjects (940 postmenopausal women and 789 middle-aged men) aged 40 years or older who had undergone comprehensive routine health examinations with an average 3 years of follow-up were enrolled. BMD in proximal femur sites (ie, the total femur, femur neck, and trochanter) was measured with dual-energy X-ray absorptiometry using the same equipment at baseline and follow-up. The mean age of women and men in this study was 55.8 ± 6.0 years and 55.5 ± 7.8 years, respectively, and serum ferritin levels were significantly higher in men than in women (p < 0.001). The overall mean annualized rates of bone loss in the total femur, femur neck, and trochanter were -1.14%/year, -1.17%/year, and -1.51%/year, respectively, in women, and -0.27%/year, -0.34%/year, and -0.41%/year, respectively, in men. After adjustment for potential confounders, the rates of bone loss in all proximal femur sites in both genders were significantly accelerated in a dose-response fashion across increasing ferritin quartile categories (p for trend = 0.043 to <0.001). Consistently, compared with subjects in the lowest ferritin quartile category, those in the third and/or highest ferritin quartile category showed significantly faster bone loss in the total femur and femur neck in both genders (p = 0.023 to <0.001). In conclusion, these data provide the first clinical evidence that increased total body iron stores could be an independent risk factor for accelerated bone loss, even in healthy populations.
Collapse
Affiliation(s)
- Beom-Jun Kim
- Division of Endocrinology and Metabolism, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
98
|
Estrogen regulates iron homeostasis through governing hepatic hepcidin expression via an estrogen response element. Gene 2012; 511:398-403. [PMID: 23041085 DOI: 10.1016/j.gene.2012.09.060] [Citation(s) in RCA: 131] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Revised: 09/03/2012] [Accepted: 09/04/2012] [Indexed: 12/29/2022]
Abstract
Iron is essential for the human being, involving in oxygen transport, energy metabolism and DNA synthesis. Iron homeostasis is tightly governed by the hepcidin-ferroportin axis, of which hepcidin is the master regulator. Excess iron is associated with various diseases including osteopenia and osteoporosis, which are closely related to the alternation of the endogenous estrogen level. To verify the biological effect of estrogen on iron metabolism, we established a mouse model of estrogen deficiency by ovariectomy. We demonstrated that the hemoglobin content and serum iron level decreased, whereas the tissue iron level in liver and spleen increased in the ovariectomized mice. Moreover, the transcription of hepatic hepcidin was elevated in ovariectomized mice compared to the control mice. We further demonstrated that there was an estrogen response element (ERE) in the promoter region of the hepcidin gene. The assay using the luciferase reporter system confirmed the existence of a functional ERE in the hepcidin promoter, as the estradiol treatment reduced hepcidin expression in cells transfected with ERE-intact construct, with no response to estradiol in cells transfected with ERE-devoid construct. In conclusion, estrogen greatly contributes to iron homeostasis by regulating hepatic hepcidin expression directly through a functional ERE in the promoter region of hepcidin gene. These findings might help build a better understanding towards the etiology of postmenopausal osteoporosis accompanied by excess tissue iron (such as iron retention of osteoclasts in bone) under estrogen deficiency.
Collapse
|
99
|
Doyard M, Fatih N, Monnier A, Island ML, Aubry M, Leroyer P, Bouvet R, Chalès G, Mosser J, Loréal O, Guggenbuhl P. Iron excess limits HHIPL-2 gene expression and decreases osteoblastic activity in human MG-63 cells. Osteoporos Int 2012; 23:2435-45. [PMID: 22237814 DOI: 10.1007/s00198-011-1871-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 12/05/2011] [Indexed: 01/10/2023]
Abstract
UNLABELLED In order to understand mechanisms involved in osteoporosis observed during iron overload diseases, we analyzed the impact of iron on a human osteoblast-like cell line. Iron exposure decreases osteoblast phenotype. HHIPL-2 is an iron-modulated gene which could contribute to these alterations. Our results suggest osteoblast impairment in iron-related osteoporosis. INTRODUCTION Iron overload may cause osteoporosis. An iron-related decrease in osteoblast activity has been suggested. METHODS We investigated the effect of iron exposure on human osteoblast cells (MG-63) by analyzing the impact of ferric ammonium citrate (FAC) and iron citrate (FeCi) on the expression of genes involved in iron metabolism or associated with osteoblast phenotype. A transcriptomic analysis was performed to identify iron-modulated genes. RESULTS FAC and FeCi exposure modulated cellular iron status with a decrease in TFRC mRNA level and an increase in intracellular ferritin level. FAC increased ROS level and caspase 3 activity. Ferroportin, HFE and TFR2 mRNAs were expressed in MG-63 cells under basal conditions. The level of ferroportin mRNA was increased by iron, whereas HFE mRNA level was decreased. The level of mRNA alpha 1 collagen type I chain, osteocalcin and the transcriptional factor RUNX2 were decreased by iron. Transcriptomic analysis revealed that the mRNA level of HedgeHog Interacting Protein Like-2 (HHIPL-2) gene, encoding an inhibitor of the hedgehog signaling pathway, was decreased in the presence of FAC. Specific inhibition of HHIPL-2 expression decreased osteoblast marker mRNA levels. Purmorphamine, hedgehog pathway activator, increased the mRNA level of GLI1, a target gene for the hedgehog pathway, and decreased osteoblast marker levels. GLI1 mRNA level was increased under iron exposure. CONCLUSION We showed that in human MG-63 cells, iron exposure impacts iron metabolism and osteoblast gene expression. HHIPL-2 gene expression modulation may contribute to these alterations. Our results support a role of osteoblast impairment in iron-related osteoporosis.
Collapse
Affiliation(s)
- M Doyard
- INSERM, UMRU991, CHU Pontchaillou, 35033 Rennes Cedex, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
100
|
Li GF, Pan YZ, Sirois P, Li K, Xu YJ. Iron homeostasis in osteoporosis and its clinical implications. Osteoporos Int 2012; 23:2403-8. [PMID: 22525981 DOI: 10.1007/s00198-012-1982-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2011] [Accepted: 02/23/2012] [Indexed: 12/14/2022]
Abstract
Osteoporosis has until now been considered to be a disease associated with abnormal calcium metabolism. However, an increasing number of clinical observations strongly suggest the association of iron overload with bone diseases, particularly in osteoporosis in menopausal women. The recent identification of hepcidin sheds new light into the crucial role of iron homeostasis in bone metabolism. Decreasing iron overload in cell studies as well as in animal experiments has been shown to improve bone cell metabolism and growth in vitro and in vivo. In view of the significant iron overload found in the aging population, especially in females, the therapeutic potential of lowering iron overload for the treatment of osteoporosis is suggested.
Collapse
Affiliation(s)
- G F Li
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | | | | | | | | |
Collapse
|