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Kubi JA, Brah AS, Cheung KMC, Chen ACH, Lee YL, Lee KF, Qiao W, Feng Y, Yeung KWK. Low-molecular-weight estrogenic phytoprotein suppresses osteoporosis development through positive modulation of skeletal estrogen receptors. Bioact Mater 2024; 42:299-315. [PMID: 39290337 PMCID: PMC11405634 DOI: 10.1016/j.bioactmat.2024.08.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 08/27/2024] [Accepted: 08/31/2024] [Indexed: 09/19/2024] Open
Abstract
Age-related osteoporosis is a metabolic skeletal disorder caused by estrogen deficiency in postmenopausal women. Prolonged use of anti-osteoporotic drugs such as bisphosphonates and FDA-approved anti-resorptive selective estrogen receptor modulators (SERMs) has been associated with various clinical drawbacks. We recently discovered a low-molecular-weight biocompatible and osteoanabolic phytoprotein, called HKUOT-S2 protein (32 kDa), from Dioscorea opposita Thunb that can accelerate bone defect healing. Here, we demonstrated that the HKUOT-S2 protein treatment can enhance osteoblasts-induced ossification and suppress osteoporosis development by upregulating skeletal estrogen receptors (ERs) ERα, ERβ, and GPR30 expressions in vivo. Also, HKUOT-S2 protein estrogenic activities promoted hMSCs-osteoblasts differentiation and functions by increasing osteogenic markers, ALP, and RUNX2 expressions, ALP activity, and osteoblast biomineralization in vitro. Fulvestrant treatment impaired the HKUOT-S2 protein-induced ERs expressions, osteoblasts differentiation, and functions. Finally, we demonstrated that the HKUOT-S2 protein could bind to ERs to exert osteogenic and osteoanabolic properties. Our results showed that the biocompatible HKUOT-S2 protein can exert estrogenic and osteoanabolic properties by positively modulating skeletal estrogen receptor signaling to promote ossification and suppress osteoporosis. Currently, there is no or limited data if any, on osteoanabolic SERMs. The HKUOT-S2 protein can be applied as a new osteoanabolic SERM for osteoporosis treatment.
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Affiliation(s)
- John Akrofi Kubi
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), PR China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, HKU-Shenzhen Hospital, Shenzhen, 518053, PR China
| | - Augustine Suurinobah Brah
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), PR China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, HKU-Shenzhen Hospital, Shenzhen, 518053, PR China
| | - Kenneth Man Chee Cheung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), PR China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, HKU-Shenzhen Hospital, Shenzhen, 518053, PR China
| | - Andy Chun Hang Chen
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, HKU, 21 Sassoon Road, PR China
- Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, HKU- Shenzhen Hospital, Shenzhen, PR China
| | - Yin Lau Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, HKU, 21 Sassoon Road, PR China
- Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, HKU- Shenzhen Hospital, Shenzhen, PR China
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, Li Ka Shing Faculty of Medicine, HKU, 21 Sassoon Road, PR China
- Shenzhen Key Laboratory of Fertility Regulation, Reproductive Medicine Center, HKU- Shenzhen Hospital, Shenzhen, PR China
| | - Wei Qiao
- Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, PR China
| | - Yibin Feng
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), PR China
| | - Kelvin Wai Kwok Yeung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong (HKU), PR China
- Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, HKU-Shenzhen Hospital, Shenzhen, 518053, PR China
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Ruivo AK, Calsa B, Cancellara MG, Lima JPN, da Silva KR, Esquisatto MAM, Santamaria-Jr M. Effect of estrogen depression on alveolar bone microarchitecture and periodontal ligament cells during orthodontic movement. Eur J Oral Sci 2024; 132:e13014. [PMID: 39160699 DOI: 10.1111/eos.13014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 07/30/2024] [Accepted: 07/31/2024] [Indexed: 08/21/2024]
Abstract
This study aimed to evaluate the effects of the estrogen depression during orthodontic tooth movement on alveolar bone microarchitecture and periodontal ligament. Female Wistar rats were divided into two groups, one consisting of non-ovariectomized animals subjected to orthodontic tooth movement, and one comprising ovariectomized animals subjected to orthodontic tooth movement. Micro-CT assessment of bone volume to total volume (BV/TV), total porosity, trabecular thickness (Tb.Th), trabecular number (Tb.N), and trabecular separation (Tb.Sp) in the alveolar bone of the orthodontically moved tooth was performed. Histomorphometric analyses were made in the periodontal ligament, and immunoexpression of RANK, RANKL, OPG, and TUNEL were quantified. Orthodontic tooth movement in the group of ovariectomized rats was faster than in non-ovariectomized animals. The alveolar bone area showed lower values of BV/TV and trabecular thickness, and higher bone porosity and trabeculae numbers in the ovariectomized rats. Histological analyses in the ovariectomized group revealed an increase in collagen fibers in the periodontal ligament. The apoptotic cell counts in the periodontal ligament were higher in the group of ovariectomized rats than in the sham-operated rats. Ovariectomy resulted in an increase in tooth movement and alteration of the alveolar bone microstructure in the first 7 day of orthodontic tooth movement, and in the presence of apoptotic cells in the periodontal ligament.
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Affiliation(s)
- Andréa Karina Ruivo
- Graduate Program in Odontology, University Center of the Hermínio Ometto Foundation - FHO, Araras, SP, Brazil
| | - Bruno Calsa
- Department of Internal Medicine, Faculty of Medical Sciences at State University of Campinas - UNICAMP, Campinas, SP, Brazil
| | - Matheus Gomez Cancellara
- Department of Social and Pediatric Dentistry, Institute of Science and Technology - College of Dentistry, São Paulo State University - Unesp, São José dos Campos, SP, Brazil
| | - João Paulo Nascimento Lima
- Graduate Program in Odontology, University Center of the Hermínio Ometto Foundation - FHO, Araras, SP, Brazil
| | - Karla Rovaris da Silva
- Department of Pathology and Dental Clinic, Federal University of Piaui, Teresina, PI, Brazil
| | | | - Milton Santamaria-Jr
- Graduate Program in Odontology, University Center of the Hermínio Ometto Foundation - FHO, Araras, SP, Brazil
- Department of Social and Pediatric Dentistry, Institute of Science and Technology - College of Dentistry, São Paulo State University - Unesp, São José dos Campos, SP, Brazil
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Mettwally WSA, Hussein RA, Abdel Jaleel GA, Hassan A, Saleh DO, El-Beih AA. Cardenolides; calotropin and gomphogenin from Calotropis procera (Aiton) mitigate bone turnover in ovariectomized osteoporotic rats: Targeting RANKL/OPG axis and estrogen receptor-alpha. Fitoterapia 2024; 179:106226. [PMID: 39321857 DOI: 10.1016/j.fitote.2024.106226] [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: 06/14/2024] [Revised: 08/20/2024] [Accepted: 09/21/2024] [Indexed: 09/27/2024]
Abstract
The present study aimed to examine the effect of Calotropis procera (Aiton) and its major cardenolides; calotropin and gomphogenin on ovariectomy-induced osteoporosis in rats. Osteoporotic rats were orally treated with C. procera alcoholic extract (100 mg/kg), calotropin (CLT; 100 μg/kg) and gomphogenin (GPG; 100 μg/kg) for 14 consecutive days. Bone resorption/formation biomarkers; bone specific alkaline phosphatase (BALP), osteoprotegerin (OPG) and nuclear factor-κβ ligand (RANKL) as well as serum calcium and phosphorus were assessed 24 h after last doses of treatments. Serum levels of estradiol (E2) and catalase were also measured. Oral treatment with C. procera extract, CLT and GPG caused E2 restoration to normal level with a marked regulation in the RANKL/OPG axis. Serum phosphorus and calcium were up-leveled whereas BALP was downregulated. Histopathological examination, bone histomorphometric analysis and immunohistochemical staining for osteopontin (OPN) inspection further emphasized the aforementioned outcomes. The results revealed the superiority of CLT and to a lesser extent GPG osteoporotic effect over C. procera extract. Molecular docking of the two compounds on ER-α and RANKL/OPG complex showed noteworthy binding affinities which also confirmed the supremacy of CLT due to the additional hydrogen bonding of the hydroxyl groups of the sugar moiety with RANKL/OPG complex. Finally, it is concluded that CLT and GPG from C. procera hinder bone turnover by decreasing osteoclastic bone cells activity and increasing calcium mineralization thus suppressing bone remodeling and preventing bone infirmity in OVX osteoporotic rats directly via binding to RANKL/OPG complex and ER-α and indirectly through elevating level of E2.
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Affiliation(s)
- Walaa S A Mettwally
- Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Giza 12622, Egypt
| | - Rehab A Hussein
- Pharmacognosy Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Giza 12622, Egypt.
| | - Gehad A Abdel Jaleel
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, Dokki, Giza 12622, Egypt
| | - Azza Hassan
- Pathology Department, Faculty of Veterinary, Cairo University, 12613, Egypt
| | - Dalia O Saleh
- Pharmacology Department, Medical Research and Clinical Studies Institute, National Research Centre, Dokki, Giza 12622, Egypt
| | - Ahmed A El-Beih
- Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Institute, National Research Centre, Dokki, Giza 12622, Egypt
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Costanzo G, Naselli A, Arpi ML, Piticchio T, Le Moli R, Belfiore A, Frasca F. Very low serum IGF-1 levels are associated with vertebral fractures in adult males with beta-thalassemia major. J Endocrinol Invest 2024; 47:1691-1700. [PMID: 38526837 DOI: 10.1007/s40618-023-02270-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 12/02/2023] [Indexed: 03/27/2024]
Abstract
PURPOSE Patients with beta-thalassemia major (BTM) often develop several endocrine disorders due to chronic iron overload. They are also prone to osteoporosis and vertebral fractures. Plasmatic insulin-like growth factor-1 (IGF-1) levels are often low in subjects with BTM, which origin is multifactorial. The aim of this study was to evaluate a possible relationship between serum IGF-1 levels and the presence of osteoporosis and/or vertebral fractures. METHODS We retrospectively evaluated the occurrence of vertebral fractures in 30 adult male patients affected by BTM (mean age 43.3 ± 7.9 years) with low serum IGF-1 (median value 52.4 ng/ml, 38.5-83.4). Only 6 of them (20.0%) were diagnosed with GH deficiency (GHD) after GHRH/arginine stimulation test, while 23 (76.7%) had osteoporosis and 12 (40.0%) had known vertebral fractures. All patients except one also showed at least one endocrine disorder. RESULTS Serum IGF-1 was significantly lower in BTM patients with vertebral fractures compared to patients without vertebral fractures (U = 41.0, p = 0.005) while it was not significantly different between patients with low bone mass compared to patients without low bone mass. The diagnosis of GHD was significantly associated with lower serum IGF-1 (p = 0.001) and vertebral fractures (p = 0.002) but not with low bone mass. After ROC analysis, we found that very low IGF-1 (≤ 50.0 ng/dl) was associated with vertebral fractures (sensitivity 83.3%, specificity 75.0%) and was also predictive of GHD (sensitivity 75.0%, specificity 100.0%). CONCLUSION Our study shows that, in male patients with BTM, serum IGF-1 ≤ 50.0 ng/dl is a marker of vertebral fractures and it is predictive of a diagnosis of GHD.
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Affiliation(s)
- G Costanzo
- Endocrinology, Department of Clinical and Experimental Medicine, University of Catania, Garibaldi-Nesima Hospital, 95122, Catania, Italy
| | - A Naselli
- Endocrinology, Department of Clinical and Experimental Medicine, University of Catania, Garibaldi-Nesima Hospital, 95122, Catania, Italy
| | - M L Arpi
- Endocrinology, Department of Clinical and Experimental Medicine, University of Catania, Garibaldi-Nesima Hospital, 95122, Catania, Italy
| | - T Piticchio
- Endocrinology, Department of Clinical and Experimental Medicine, University of Catania, Garibaldi-Nesima Hospital, 95122, Catania, Italy
| | - R Le Moli
- Endocrinology, Department of Clinical and Experimental Medicine, University of Catania, Garibaldi-Nesima Hospital, 95122, Catania, Italy
| | - A Belfiore
- Endocrinology, Department of Clinical and Experimental Medicine, University of Catania, Garibaldi-Nesima Hospital, 95122, Catania, Italy
| | - F Frasca
- Endocrinology, Department of Clinical and Experimental Medicine, University of Catania, Garibaldi-Nesima Hospital, 95122, Catania, Italy.
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Grigoryan S, Clines GA. Hormonal Control of Bone Architecture Throughout the Lifespan: Implications for Fracture Prediction and Prevention. Endocr Pract 2024; 30:687-694. [PMID: 38631489 DOI: 10.1016/j.eprac.2024.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/31/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024]
Abstract
BACKGROUND Skeletal modeling in childhood and adolescence and continuous remodeling throughout the lifespan are designed to adapt to a changing environment and resist external forces and fractures. The flux of sex steroids in men and women, beginning from fetal development and evolving through infancy, childhood, puberty, young adulthood, peri/menopause transition, and postmenopause, is critical for bone size, peak bone mass, and fracture resistance. OBJECTIVE This review will highlight how changes in sex steroids throughout the lifespan affect bone cells and the consequence of these changes on bone architecture and strength. METHODS Literature review and discussion. RESULTS The contributions of estrogen and testosterone on skeletal development have been difficult to study due to the reciprocal and intertwining contributions of one on the other. Although orchiectomy in men renders circulating testosterone absent, circulating estrogen also declines due to testosterone being the substrate for estradiol. The discovery of men with absent estradiol or resistance to estrogen and the study of mouse models led to the understanding that estrogen has a larger direct role in skeletal development and maintenance in men and women. The mechanistic reason for larger bone size in men is incompletely understood but related to indirect effects of testosterone on the skeleton, such as higher muscle mass leading to larger mechanical loading. Declines in sex steroids during menopause in women and androgen deprivation therapies in men have profound and negative effects on the skeleton. Therapies to prevent such bone loss are available, but how such therapies can be tailored based on bone size and architecture remains an area of investigation. CONCLUSION In this review, the elegant interplay and contribution of sex steroids on bone architecture in men and women throughout the lifespan is described.
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Affiliation(s)
- Seda Grigoryan
- Division of Metabolism, Endocrinology & Diabetes, Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, Michigan
| | - Gregory A Clines
- Division of Metabolism, Endocrinology & Diabetes, Department of Internal Medicine, University of Michigan School of Medicine, Ann Arbor, Michigan; Endocrinology Section, Veterans Affairs Medical Center, Ann Arbor, Michigan.
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6
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Gandhi N, Omer S, Harrison RE. In Vitro Cell Culture Model for Osteoclast Activation during Estrogen Withdrawal. Int J Mol Sci 2024; 25:6134. [PMID: 38892322 PMCID: PMC11173070 DOI: 10.3390/ijms25116134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/22/2024] [Accepted: 05/24/2024] [Indexed: 06/21/2024] Open
Abstract
Estrogen (17β-estradiol) deficiency post-menopause alters bone homeostasis whereby bone resorption by osteoclasts exceeds bone formation by osteoblasts, leading to osteoporosis in females. We established an in vitro model to examine the consequences of estrogen withdrawal (E2-WD) on osteoclasts derived from the mouse macrophage RAW 264.7 cell line and utilized it to investigate the mechanism behind the enhanced osteoclast activity post-menopause. We found that a greater population of osteoclasts that underwent E2-WD contained a podosome belt necessary for osteoclasts to adhere and resorb bone and possessed elevated resorptive activity compared to osteoclasts exposed to estrogen (E2) continuously. Our results show that compared to osteoclasts that received E2 continuously, those that underwent E2-WD had a faster rate of microtubule (MT) growth, reduced RhoA activation, and shorter podosome lifespan. Thus, altered podosome and MT dynamics induced by the withdrawal of estrogen supports podosome belt assembly/stability in osteoclasts, which may explain their enhanced bone resorption activity.
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Affiliation(s)
- Nisha Gandhi
- Department of Cell & Systems Biology, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada;
| | - Safia Omer
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada;
| | - Rene E. Harrison
- Department of Cell & Systems Biology, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada;
- Department of Biological Sciences, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada;
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7
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Clark R, Park SY, Bradley EW, Mansky K, Tasca A. Mouse mandibular-derived osteoclast progenitors have differences in intrinsic properties compared with femoral-derived progenitors. JBMR Plus 2024; 8:ziae029. [PMID: 38606149 PMCID: PMC11008737 DOI: 10.1093/jbmrpl/ziae029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 04/13/2024] Open
Abstract
Craniofacial osteoclasts are essential for site-specific processes such as alveolar bone resorption, tooth eruption, and orthodontic tooth movement. Much of the current understanding of osteoclast development and function comes from studies using long bone-derived cells. Minimal investigation has been done to explore skeletal site differences. The overall goal of this study was to determine if mandibular- and femoral-derived osteoclasts represent distinct populations. To test this hypothesis, bone marrow cells were initially analyzed from the mandible and femur of 2-month-old mice. It was shown that mandibular-derived osteoclasts have enhanced size (mm2) compared with femoral-derived osteoclasts. Since bone marrow macrophages are a heterogenous population, we additionally selected for monocytes and demonstrated that mandibular-derived monocytes also form osteoclasts with increased size compared with femoral-derived monocytes. Osteoclast precursor populations from both skeletal sites were analyzed by flow cytometry. A newly described Ly6CHigh+ population as well as the Ly6Cint population was increased in the mandibular-derived cells. The difference in differentiation potential between monocyte cultures suggests that the increase in the Ly6CHigh+ population may explain the enhanced differentiation potential in mandibular-derived cells. Monocyte genes such as Pu.1, C/ebp-a, and Prdm1 are increased in expression in mandibular-derived monocytes compared with femoral-derived monocytes. As expected with enhanced differentiation, osteoclast genes including Nfatc1, Dc-stamp, Ctsk, and Rank are upregulated in mandibular-derived osteoclast precursors. Future studies will determine how changes in the environment of the mandible lead to changes in percentages of osteoclast progenitors and their differentiation potential.
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Affiliation(s)
- Rachel Clark
- Department of Developmental and Surgical Sciences, Oral Biology Graduate Program, University of Minnesota School of Dentistry, Minneapolis, MN 55455, United States
| | - Soo Y Park
- School of Dentistry, University of Minnesota, Minneapolis, MN 55455, United States
| | - Elizabeth W Bradley
- Department of Orthopedic Surgery, University of Minnesota, Minneapolis, MN 55455, United States
| | - Kim Mansky
- Division of Orthodontics, Department of Developmental and Surgical Sciences, University of Minnesota School of Dentistry Minneapolis, Minneapolis, MN 55455, United States
| | - Amy Tasca
- Division of Orthodontics, Department of Developmental and Surgical Sciences, University of Minnesota School of Dentistry Minneapolis, Minneapolis, MN 55455, United States
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Sowińska-Przepiera E, Krzyścin M, Syrenicz I, Ćwiertnia A, Orlińska A, Ćwiek D, Branecka-Woźniak D, Cymbaluk-Płoska A, Bumbulienė Ž, Syrenicz A. Evaluation of Trabecular Bone Microarchitecture and Bone Mineral Density in Young Women, Including Selected Hormonal Parameters. Biomedicines 2024; 12:758. [PMID: 38672114 PMCID: PMC11048270 DOI: 10.3390/biomedicines12040758] [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: 01/31/2024] [Revised: 03/24/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
The absence of non-invasive methods for assessing bone material and structural changes is a significant diagnostic challenge. Dual-energy X-ray absorptiometry (DXA) bone mineral density (BMD) testing is the gold standard for osteoporosis diagnosis. BMD and the trabecular bone score (TBS) have facilitated targeted osteoporosis prevention and treatment in clinical settings. The findings from this study indicate that BMD modulation in young women is influenced by various hormones, potentially compromising the diagnostic precision of BMD for subclinical bone demineralization. A total of 205 women aged 19 to 37 underwent anthropometric measurements and hormonal tests. BMD was determined using DXA, and TBS values were computed from the lumbar spine L1-L4 segment. The multivariate analysis findings suggest that BMD might not be determined by hormones. The relationship between TBS and TSH was statistically significant in the univariate analysis, which indicates the efficacy of further studies to determine the link between TBS and specific hormones. Analyzing the strength of the correlation between TBS and hormones in the univariate analysis shows which factors are worth considering in further analyses. This makes it possible to create better techniques that will help identify young women who are at a higher risk of developing osteoporosis.
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Affiliation(s)
- Elżbieta Sowińska-Przepiera
- Pediatric, Adolescent Gynecology Clinic, Department of Gynecology, Endocrinology and Gynecological Oncology, Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, 71-252 Szczecin, Poland;
- Department of Endocrinology, Metabolic and Internal Diseases, Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, 71-252 Szczecin, Poland; (I.S.); (A.S.)
| | - Mariola Krzyścin
- Pediatric, Adolescent Gynecology Clinic, Department of Gynecology, Endocrinology and Gynecological Oncology, Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, 71-252 Szczecin, Poland;
| | - Igor Syrenicz
- Department of Endocrinology, Metabolic and Internal Diseases, Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, 71-252 Szczecin, Poland; (I.S.); (A.S.)
| | - Adrianna Ćwiertnia
- Department of Reconstructive Surgery and Gynecological Oncology, Pomeranian Medical University in Szczecin, Al. Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland; (A.Ć.); (A.O.); (A.C.-P.)
| | - Adrianna Orlińska
- Department of Reconstructive Surgery and Gynecological Oncology, Pomeranian Medical University in Szczecin, Al. Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland; (A.Ć.); (A.O.); (A.C.-P.)
| | - Dorota Ćwiek
- Department of Obstetrics and Pathology of Pregnancy, Pomeranian Medical University in Szczecin, 70-204 Szczecin, Poland;
| | - Dorota Branecka-Woźniak
- Department of Gynecology and Reproductive Health, Pomeranian Medical University of Szczecin, Żołnierska 48, 71-210 Szczecin, Poland;
| | - Aneta Cymbaluk-Płoska
- Department of Reconstructive Surgery and Gynecological Oncology, Pomeranian Medical University in Szczecin, Al. Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland; (A.Ć.); (A.O.); (A.C.-P.)
| | - Žana Bumbulienė
- Clinic of Obstetrics and Gynecology, Institute of Clinical Medicine, Faculty of Medicine, Vilnius University, LT-08661 Vilnius, Lithuania;
| | - Anhelli Syrenicz
- Department of Endocrinology, Metabolic and Internal Diseases, Pomeranian Medical University in Szczecin, Unii Lubelskiej 1, 71-252 Szczecin, Poland; (I.S.); (A.S.)
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9
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Feng Y, Wang H, Xu S, Huang J, Pei Q, Wang Z. The detection of Gper1 as an important gene promoting jawbone regeneration in the context of estrogen deficiency. Bone 2024; 180:116990. [PMID: 38141748 DOI: 10.1016/j.bone.2023.116990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 12/13/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
Numerous studies have demonstrated that estrogen deficiency inhibit the proliferation and differentiation of pre-osteoblasts in skeleton by affecting osteogenic signaling, lead to decreased bone mass and impaired regeneration. To explore the mechanisms maintaining bone regeneration under estrogen deficiency, we randomly selected 1102 clinical cases, in which female patients aged between 18 and 75 have underwent tooth extraction in Stomatological Hospital of Tongji University, there is little difference in the healing effect of extraction defects, suggesting that to some extent, the regeneration of jawbone is insensitive to the decreased estrogen level. To illuminate the mechanisms promoting jawbone regeneration under estrogen deficiency, a tooth extraction defect model was established in the maxilla of female rats who underwent ovariectomy (OVX) or sham surgery, and jawbone marrow stromal cells (BMSCs) were isolated for single-cell sequencing. Further quantitative PCR, RNA interference, alizarin red staining, immunohistochemistry and western blotting experiments demonstrated that in the context of ovariectomy, maxillary defects promoted G protein-coupled estrogen receptor 1 (Gper1) expression, stimulate downstream cAMP/PKA/pCREB signaling, and facilitate cell proliferation, and thus provided sufficient progenitors for osteogenesis and enhanced the regeneration capacity of the jawbone. Correspondingly, the heterozygous deletion of the Gper1 gene attenuated the phosphorylation of CREB, led to decreased cell proliferation, and impaired the restoration of maxillary defects. This study demonstrates the importance of Gper1 in maintaining jawbone regeneration, especially in the context of estrogen deficiency.
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Affiliation(s)
- Yuan Feng
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China
| | - Haicheng Wang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China
| | - Shuyu Xu
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China
| | - Jie Huang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China
| | - Qingguo Pei
- Department of Stomatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No.100 Haining Road, Shanghai 200080, PR China
| | - Zuolin Wang
- Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, No.399 Middle Yanchang Road, Shanghai 200072, PR China.
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10
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Smit A, Meijer O, Winter E. The multi-faceted nature of age-associated osteoporosis. Bone Rep 2024; 20:101750. [PMID: 38566930 PMCID: PMC10985042 DOI: 10.1016/j.bonr.2024.101750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/03/2024] [Accepted: 03/04/2024] [Indexed: 04/04/2024] Open
Abstract
Age-associated osteoporosis (AAOP) poses a significant health burden, characterized by increased fracture risk due to declining bone mass and strength. Effective prevention and early treatment strategies are crucial to mitigate the disease burden and the associated healthcare costs. Current therapeutic approaches effectively target the individual contributing factors to AAOP. Nonetheless, the management of AAOP is complicated by the multitude of variables that affect its development. Main intrinsic and extrinsic factors contributing to AAOP risk are reviewed here, including mechanical unloading, nutrient deficiency, hormonal disbalance, disrupted metabolism, cognitive decline, inflammation and circadian disruption. Furthermore, it is discussed how these can be targeted for prevention and treatment. Although valuable as individual targets for intervention, the interconnectedness of these risk factors result in a unique etiology for every patient. Acknowledgement of the multifaceted nature of AAOP will enable the development of more effective and sustainable management strategies, based on a holistic, patient-centered approach.
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Affiliation(s)
- A.E. Smit
- Department of Medicine, Division of Endocrinology, Leiden University Medical Center, Leiden, the Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden, the Netherlands
| | - O.C. Meijer
- Department of Medicine, Division of Endocrinology, Leiden University Medical Center, Leiden, the Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden, the Netherlands
| | - E.M. Winter
- Department of Medicine, Division of Endocrinology, Leiden University Medical Center, Leiden, the Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden, the Netherlands
- Department of Medicine, Center for Bone Quality, Leiden University Medical Center, Leiden, the Netherlands
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11
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Chen S, Jin J, Xu Z, Han H, Wu L, Li Z. Catalpol attenuates osteoporosis in ovariectomized rats through promoting osteoclast apoptosis via the Sirt6-ERα-FasL axis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 123:155262. [PMID: 38100921 DOI: 10.1016/j.phymed.2023.155262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 11/19/2023] [Accepted: 12/04/2023] [Indexed: 12/17/2023]
Abstract
BACKGROUND Catalpol, a major active component of the Chinese herb Rehmannia glutinosa, possesses various pharmacological benefits, including anti-inflammatory, antidiabetic, and antitumor properties. Recent studies have reported that catalpol can attenuate bone loss and enhance bone formation. Nevertheless, the molecular mechanisms underlying its effects on osteoporosis pathogenesis remain unclear. PURPOSE We investigated whether catalpol had a protective effect against postmenopausal osteoporosis (PMOP) and explored its exact mechanism of action. METHODS Seventy-two rats were randomly divided into six groups: sham, model, low-dose catalpol (5 mg/kg/day), medium-dose catalpol (10 mg/kg/day), high-dose catalpol (20 mg/kg/day), and positive control (alendronate, 2.5 mg/kg). In this experiment, a ovariectomy was performed to establish a female rat model of PMOP. After 12 weeks of gavage, micro-computed tomography (micro-CT) and histochemical staining were performed to evaluate bone mass, bone microstructure and histological parameters. Furthermore, RAW 264.7 cells were induced by RANKL to form mature osteoclasts to investigate the effect of catalpol on osteoclast differentiation and apoptosis in vitro. Additionally, the osteoclast apoptosis-related proteins of Sirt6, ERα, FasL, NFATc1, cleaved-caspase 8, cleaved-caspase 3, and Bax were assessed using western blotting. The expressions of NFATc1, Ctsk, Oscar, and Trap were quantified using RT-qPCR. The apoptotic rate of the osteoclasts was determined using flow cytometry. Sirt6 knockdown was performed using siRNA gene silencing in experiments to investigate its role in catalpol-mediated osteoclast apoptosis. The deacetylation of ERα in osteoclasts was tested via co-immunoprecipitation. RESULTS Catalpol (10 and 20 mg/kg) and alendronate (2.5 mg/kg) could significantly improve bone mineral density (BMD) and microstructure and decrease osteoclast density in ovariectomized (OVX) rats. In addition, catalpol (10 and 20 mg/kg) upregulated the expression of Sirt6, ERα, FasL, cleaved-caspase 8, cleaved-caspase 3, Bax, and downregulated the expression of NFATc1, Ctsk, Oscar, Trap both in vivo and in vitro. Catalpol also promoted ERα deacetylation and stabilized ERα protein to enhance the expression of FasL. In addition, Sirt6 knockdown by siRNA prevented ERα deacetylation and eliminated catalpol-mediated osteoclast apoptosis. CONCLUSIONS The present study demonstrated that catalpol prevents estrogen deficiency-induced osteoporosis by promoting osteoclast apoptosis via the Sirt6-ERα-FasL axis. These findings revealed a novel molecular mechanism underpinning the impact of catalpol in the progression of osteoporosis and provided novel insights into the treatment of osteoporosis.
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Affiliation(s)
- Shuai Chen
- Department of Orthopaedics, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Jie Jin
- Department of Orthopaedics, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Ziqing Xu
- Department of Orthopaedics, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Huawei Han
- Department of Orthopaedics, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Lan Wu
- Department of Gynecology and Obstetrics, Gynecology Hospital Affiliated to Nanjing Medical University, Nanjing, China.
| | - Zhiwei Li
- Department of Orthopaedics, The Second Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.
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12
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Bajpai AK, Gu Q, Jiao Y, Starlard-Davenport A, Gu W, Quarles LD, Xiao Z, Lu L. Systems genetics and bioinformatics analyses using ESR1-correlated genes identify potential candidates underlying female bone development. Genomics 2024; 116:110769. [PMID: 38141931 PMCID: PMC10811775 DOI: 10.1016/j.ygeno.2023.110769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 11/14/2023] [Accepted: 12/18/2023] [Indexed: 12/25/2023]
Abstract
Estrogen receptor α (ESR1) is involved in E2 signaling and plays a major role in postmenopausal bone loss. However, the molecular network underlying ESR1 has not been explored. We used systems genetics and bioinformatics to identify important genes associated with Esr1 in postmenopausal bone loss. We identified ~2300 Esr1-coexpressed genes in female BXD bone femur, functional analysis of which revealed 'osteoblast signaling' as the most enriched pathway. PPI network led to the identification of 25 'female bone candidates'. The gene-regulatory analysis revealed RUNX2 as a key TF. ANKRD1 and RUNX2 were significantly different between osteoporosis patients and healthy controls. Sp7, Col1a1 and Pth1r correlated with multiple femur bone phenotypes in BXD mice. miR-3121-3p targeted Csf1, Ankrd1, Sp7 and Runx2. β-estradiol treatment markedly increased the expression of these candidates in mouse osteoblast. Our study revealed that Esr1-correlated genes Ankrd1, Runx2, Csf1 and Sp7 may play important roles in female bone development.
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Affiliation(s)
- Akhilesh K Bajpai
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Qingqing Gu
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN, USA; Department of Cardiology, Affiliated Hospital of Nantong University, Jiangsu 226001, China
| | - Yan Jiao
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Athena Starlard-Davenport
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Weikuan Gu
- Department of Orthopaedic Surgery and Biomedical Engineering, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Leigh Darryl Quarles
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Zhousheng Xiao
- Department of Medicine, University of Tennessee Health Science Center, Memphis, TN, USA.
| | - Lu Lu
- Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN, USA.
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13
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Sandor LF, Ragacs R, Gyori DS. Local Effects of Steroid Hormones within the Bone Microenvironment. Int J Mol Sci 2023; 24:17482. [PMID: 38139309 PMCID: PMC10744126 DOI: 10.3390/ijms242417482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 12/05/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Steroid hormone production via the adrenal cortex, gonads, and placenta (so-called glandular steroidogenesis) is responsible for the endocrine control of the body's homeostasis and is organized by a feedback regulatory mechanism based on the hypothalamus-pituitary-steroidogenic gland axis. On the other hand, recently discovered extraglandular steroidogenesis occurring locally in different tissues is instead linked to paracrine or autocrine signaling, and it is independent of the control by the hypothalamus and pituitary glands. Bone cells, such as bone-forming osteoblasts, osteoblast-derived osteocytes, and bone-resorbing osteoclasts, respond to steroid hormones produced by both glandular and extraglandular steroidogenesis. Recently, new techniques to identify steroid hormones, as well as synthetic steroids and steroidogenesis inhibitors, have been introduced, which greatly empowered steroid hormone research. Based on recent literature and new advances in the field, here we review the local role of steroid hormones in regulating bone homeostasis and skeletal lesion formation. The novel idea of extraglandular steroidogenesis occurring within the skeletal system raises the possibility of the development of new therapies for the treatment of bone diseases.
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Affiliation(s)
| | | | - David S. Gyori
- Department of Physiology, School of Medicine, Semmelweis University, 1085 Budapest, Hungary
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14
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Marques-Carvalho A, Kim HN, Almeida M. The role of reactive oxygen species in bone cell physiology and pathophysiology. Bone Rep 2023; 19:101664. [PMID: 38163012 PMCID: PMC10757300 DOI: 10.1016/j.bonr.2023.101664] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/17/2023] [Accepted: 02/20/2023] [Indexed: 02/26/2023] Open
Abstract
Hydrogen peroxide (H2O2), superoxide anion radical (O2-•), and other forms of reactive oxygen species (ROS) are produced by the vast majority of mammalian cells and can contribute both to cellular homeostasis and dysfunction. The NADPH oxidases (NOX) enzymes and the mitochondria electron transport chain (ETC) produce most of the cellular ROS. Multiple antioxidant systems prevent the accumulation of excessive amounts of ROS which cause damage to all cellular macromolecules. Many studies have examined the contribution of ROS to different bone cell types and to skeletal physiology and pathophysiology. Here, we discuss the role of H2O2 and O2-• and their major enzymatic sources in osteoclasts and osteoblasts, the fundamentally different ways via which these cell types utilize mitochondrial derived H2O2 for differentiation and function, and the molecular mechanisms that impact and are altered by ROS in these cells. Particular emphasis is placed on evidence obtained from mouse models describing the contribution of different sources of ROS or antioxidant enzymes to bone resorption and formation. Findings from studies using pharmacological or genetically modified mouse models indicate that an increase in H2O2 and perhaps other ROS contribute to the loss of bone mass with aging and estrogen deficiency, the two most important causes of osteoporosis and increased fracture risk in humans.
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Affiliation(s)
- Adriana Marques-Carvalho
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, Cantanhede, Portugal
| | - Ha-Neui Kim
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, USA
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Maria Almeida
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, USA
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, USA
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15
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Venkatesh VS, Nie T, Zajac JD, Grossmann M, Davey RA. The Utility of Preclinical Models in Understanding the Bone Health of Transgender Individuals Undergoing Gender-Affirming Hormone Therapy. Curr Osteoporos Rep 2023; 21:825-841. [PMID: 37707757 PMCID: PMC10724092 DOI: 10.1007/s11914-023-00818-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/16/2023] [Indexed: 09/15/2023]
Abstract
PURPOSE OF REVIEW To summarise the evidence regarding the effects of gender-affirming hormone therapy (GAHT) on bone health in transgender people, to identify key knowledge gaps and how these gaps can be addressed using preclinical rodent models. RECENT FINDINGS Sex hormones play a critical role in bone physiology, yet there is a paucity of research regarding the effects of GAHT on bone microstructure and fracture risk in transgender individuals. The controlled clinical studies required to yield fracture data are unethical to conduct making clinically translatable preclinical research of the utmost importance. Novel genetic and surgical preclinical models have yielded significant mechanistic insight into the roles of sex steroids on skeletal integrity. Preclinical models of GAHT have the potential inform clinical approaches to preserve skeletal integrity and prevent fractures in transgender people undergoing GAHT. This review highlights the key considerations required to ensure the information gained from preclinical models of GAHT are informative.
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Affiliation(s)
- Varun S Venkatesh
- Department of Medicine, Austin Health, The University of Melbourne, Heidelberg, Victoria, 3084, Australia
| | - Tian Nie
- Department of Medicine, Austin Health, The University of Melbourne, Heidelberg, Victoria, 3084, Australia
| | - Jeffrey D Zajac
- Department of Medicine, Austin Health, The University of Melbourne, Heidelberg, Victoria, 3084, Australia
- Department of Endocrinology, Austin Health, Heidelberg, Victoria, 3084, Australia
| | - Mathis Grossmann
- Department of Medicine, Austin Health, The University of Melbourne, Heidelberg, Victoria, 3084, Australia
- Department of Endocrinology, Austin Health, Heidelberg, Victoria, 3084, Australia
| | - Rachel A Davey
- Department of Medicine, Austin Health, The University of Melbourne, Heidelberg, Victoria, 3084, Australia.
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16
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Tan J, Zhang Z, He Y, Xu X, Yang Y, Xu Q, Yuan Y, Wu X, Niu J, Tang S, Wu X, Hu Y. Development and validation of a risk prediction model for osteoporosis in elderly patients with type 2 diabetes mellitus: a retrospective and multicenter study. BMC Geriatr 2023; 23:698. [PMID: 37891456 PMCID: PMC10604807 DOI: 10.1186/s12877-023-04306-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 09/11/2023] [Indexed: 10/29/2023] Open
Abstract
BACKGROUND This study aimed to construct a risk prediction model to estimate the odds of osteoporosis (OP) in elderly patients with type 2 diabetes mellitus (T2DM) and evaluate its prediction efficiency. METHODS This study included 21,070 elderly patients with T2DM who were hospitalized at six tertiary hospitals in Southwest China between 2012 and 2022. Univariate logistic regression analysis was used to screen for potential influencing factors of OP and least absolute shrinkage. Further, selection operator regression (LASSO) and multivariate logistic regression analyses were performed to select variables for developing a novel predictive model. The area under the receiver operating characteristic curve (AUROC), calibration curve, decision curve analysis (DCA), and clinical impact curve (CIC) were used to evaluate the performance and clinical utility of the model. RESULTS The incidence of OP in elderly patients with T2DM was 7.01% (1,476/21,070). Age, sex, hypertension, coronary heart disease, cerebral infarction, hyperlipidemia, and surgical history were the influencing factors. The seven-variable model displayed an AUROC of 0.713 (95% confidence interval [CI]:0.697-0.730) in the training set, 0.716 (95% CI: 0.691-0.740) in the internal validation set, and 0.694 (95% CI: 0.653-0.735) in the external validation set. The optimal decision probability cut-off value was 0.075. The calibration curve (bootstrap = 1,000) showed good calibration. In addition, the DCA and CIC demonstrated good clinical practicality. An operating interface on a webpage ( https://juntaotan.shinyapps.io/osteoporosis/ ) was developed to provide convenient access for users. CONCLUSIONS This study constructed a highly accurate model to predict OP in elderly patients with T2DM. This model incorporates demographic characteristics and clinical risk factors and may be easily used to facilitate individualized prediction.
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Affiliation(s)
- Juntao Tan
- Operation Management Office, Affiliated Banan Hospital of Chongqing Medical University, Chongqing, 401320, China
| | - Zhengyu Zhang
- Medical Records Department, the First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, 310003, China
| | - Yuxin He
- Department of Medical Administration, Affiliated Banan Hospital of Chongqing Medical University, Chongqing, 401320, China
| | - Xiaomei Xu
- Department of Infectious Diseases, Chengdu Fifth People's hospital, Chengdu, 611130, China
| | - Yanzhi Yang
- Department of Endocrinology and Metabolism, Chengdu First People's Hospital, Chengdu, 610041, China
| | - Qian Xu
- College of Medical Informatics, Chongqing Medical University, Chongqing, 400016, China
- Medical Data Science Academy, Chongqing Medical University, Chongqing, 400016, China
- Library, Chongqing Medical University, Chongqing, 400016, China
| | - Yuan Yuan
- Medical Records Department, Women and Children's Hospital of Chongqing Medical University, Chongqing, 401147, China
| | - Xin Wu
- Department of Gastrointestinal surgery, Third Affiliated Hospital of Chongqing Medical University, Chongqing, 401120, China
| | - Jianhua Niu
- Department of Critical Care, the First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qing Chun Road, Hangzhou, 310003, Zhejiang, China
| | - Songjia Tang
- Plastic and Aesthetic Surgery Department, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310000, Zhejiang, China.
| | - Xiaoxin Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, National Clinical Research Centre for Infectious Diseases, the First Affiliated Hospital, Zhejiang University School of Medicine, 79 Qing Chun Road, Hangzhou, 310003, Zhejiang, China.
| | - Yongjun Hu
- Department of Orthopedics, Affiliated Banan Hospital of Chongqing Medical University, Chongqing, 401320, China.
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17
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Aboushaala K, Wong AYL, Barajas JN, Lim P, Al-Harthi L, Chee A, Forsyth CB, Oh CD, Toro SJ, Williams FMK, An HS, Samartzis D. The Human Microbiome and Its Role in Musculoskeletal Disorders. Genes (Basel) 2023; 14:1937. [PMID: 37895286 PMCID: PMC10606932 DOI: 10.3390/genes14101937] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Musculoskeletal diseases (MSDs) are characterized as injuries and illnesses that affect the musculoskeletal system. MSDs affect every population worldwide and are associated with substantial global burden. Variations in the makeup of the gut microbiota may be related to chronic MSDs. There is growing interest in exploring potential connections between chronic MSDs and variations in the composition of gut microbiota. The human microbiota is a complex community consisting of viruses, archaea, bacteria, and eukaryotes, both inside and outside of the human body. These microorganisms play crucial roles in influencing human physiology, impacting metabolic and immunological systems in health and disease. Different body areas host specific types of microorganisms, with facultative anaerobes dominating the gastrointestinal tract (able to thrive with or without oxygen), while strict aerobes prevail in the nasal cavity, respiratory tract, and skin surfaces (requiring oxygen for development). Together with the immune system, these bacteria have coevolved throughout time, forming complex biological relationships. Changes in the microbial ecology of the gut may have a big impact on health and can help illnesses develop. These changes are frequently impacted by lifestyle choices and underlying medical disorders. The potential for safety, expenses, and efficacy of microbiota-based medicines, even with occasional delivery, has attracted interest. They are, therefore, a desirable candidate for treating MSDs that are chronic and that may have variable progression patterns. As such, the following is a narrative review to address the role of the human microbiome as it relates to MSDs.
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Affiliation(s)
- Khaled Aboushaala
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA; (K.A.); (J.N.B.); (P.L.); (A.C.); (C.-d.O.); (S.J.T.); (H.S.A.)
- International Spine Research and Innovation Initiative, Rush University Medical Center, Chicago, IL 60612, USA
| | - Arnold Y. L. Wong
- Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong SAR, China;
| | - Juan Nicolas Barajas
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA; (K.A.); (J.N.B.); (P.L.); (A.C.); (C.-d.O.); (S.J.T.); (H.S.A.)
- International Spine Research and Innovation Initiative, Rush University Medical Center, Chicago, IL 60612, USA
| | - Perry Lim
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA; (K.A.); (J.N.B.); (P.L.); (A.C.); (C.-d.O.); (S.J.T.); (H.S.A.)
- International Spine Research and Innovation Initiative, Rush University Medical Center, Chicago, IL 60612, USA
| | - Lena Al-Harthi
- Department of Microbial Pathogens and Immunity, Rush University Medical Center, Chicago, IL 60612, USA;
| | - Ana Chee
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA; (K.A.); (J.N.B.); (P.L.); (A.C.); (C.-d.O.); (S.J.T.); (H.S.A.)
- International Spine Research and Innovation Initiative, Rush University Medical Center, Chicago, IL 60612, USA
| | - Christopher B. Forsyth
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL 60612, USA;
| | - Chun-do Oh
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA; (K.A.); (J.N.B.); (P.L.); (A.C.); (C.-d.O.); (S.J.T.); (H.S.A.)
- International Spine Research and Innovation Initiative, Rush University Medical Center, Chicago, IL 60612, USA
| | - Sheila J. Toro
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA; (K.A.); (J.N.B.); (P.L.); (A.C.); (C.-d.O.); (S.J.T.); (H.S.A.)
- International Spine Research and Innovation Initiative, Rush University Medical Center, Chicago, IL 60612, USA
| | | | - Howard S. An
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA; (K.A.); (J.N.B.); (P.L.); (A.C.); (C.-d.O.); (S.J.T.); (H.S.A.)
- International Spine Research and Innovation Initiative, Rush University Medical Center, Chicago, IL 60612, USA
| | - Dino Samartzis
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA; (K.A.); (J.N.B.); (P.L.); (A.C.); (C.-d.O.); (S.J.T.); (H.S.A.)
- International Spine Research and Innovation Initiative, Rush University Medical Center, Chicago, IL 60612, USA
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18
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Doolittle ML, Eckhardt BA, Vos SJ, Grain S, Rowsey JL, Ruan M, Saul D, Farr JN, Weivoda MM, Khosla S, Monroe DG. Modest Effects of Osteoclast-Specific ERα Deletion after Skeletal Maturity. JBMR Plus 2023; 7:e10797. [PMID: 37808391 PMCID: PMC10556268 DOI: 10.1002/jbm4.10797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 06/15/2023] [Accepted: 06/28/2023] [Indexed: 10/10/2023] Open
Abstract
Estrogen regulates bone mass in women and men, but the underlying cellular mechanisms of estrogen action on bone remain unclear. Although both estrogen receptor (ER)α and ERβ are expressed in bone cells, ERα is the dominant receptor for skeletal estrogen action. Previous studies using either global or cell-specific ERα deletion provided important insights, but each of these approaches had limitations. Specifically, either high circulating sex steroid levels in global ERα knockout mice or the effects of deletion of ERα during growth and development in constitutive cell-specific knockout mice have made it difficult to clearly define the role of ERα in specific cell types in the adult skeleton. We recently generated and characterized mice with tamoxifen-inducible ERα deletion in osteocytes driven by the 8-kb Dmp1 promoter (ERαΔOcy mice), revealing detrimental effects of osteocyte-specific ERα deletion on trabecular bone volume (-20.1%) and bone formation rate (-18.9%) in female, but not male, mice. Here, we developed and characterized analogous mice with inducible ERα deletion in osteoclasts using the Cathepsin K promoter (ERαΔOcl mice). In a study design identical to that with the previously described ERαΔOcy mice, adult female, but not male, ERαΔOcl mice showed a borderline (-10.2%, p = 0.084) reduction in trabecular bone volume, no change in osteoclast numbers, but a significant increase in serum CTx levels, consistent with increased osteoclast activity. These findings in ERαΔOcl mice differ from previous studies of constitutive osteoclast-specific ERα deletion, which led to clear deficits in trabecular bone and increased osteoclast numbers. Collectively, these data indicate that in adult mice, estrogen action in the osteocyte is likely more important than via the osteoclast and that ERα deletion in osteoclasts from conception onward has more dramatic skeletal effects than inducible osteoclastic ERα deletion in adult mice. © 2023 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Madison L. Doolittle
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Brittany A. Eckhardt
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Stephanie J. Vos
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Sarah Grain
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Jennifer L. Rowsey
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Ming Ruan
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Dominik Saul
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
- Department of Trauma and Reconstructive SurgeryEberhard Karls University Tübingen, BG Trauma Center TübingenTübingenGermany
| | - Joshua N. Farr
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Megan M. Weivoda
- Robert and Arlene Kogod Center on Aging and Division of HematologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - Sundeep Khosla
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
| | - David G. Monroe
- Robert and Arlene Kogod Center on Aging and Division of EndocrinologyMayo Clinic College of MedicineRochesterMinnesotaUSA
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19
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Nelson LM. The truth about 17-beta estradiol: menopause beyond "old wives' tales". Front Endocrinol (Lausanne) 2023; 14:1229804. [PMID: 37766693 PMCID: PMC10520270 DOI: 10.3389/fendo.2023.1229804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 08/31/2023] [Indexed: 09/29/2023] Open
Affiliation(s)
- Lawrence M. Nelson
- Digital Women's Health Initiative, Mary Elizabeth Conover Foundation, Inc., Tysons, VA, United States
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20
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Wells KV, Krackeler ML, Jathal MK, Parikh M, Ghosh PM, Leach JK, Genetos DC. Prostate cancer and bone: clinical presentation and molecular mechanisms. Endocr Relat Cancer 2023; 30:e220360. [PMID: 37226936 PMCID: PMC10696925 DOI: 10.1530/erc-22-0360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 05/24/2023] [Indexed: 05/26/2023]
Abstract
Prostate cancer (PCa) is an increasingly prevalent health problem in the developed world. Effective treatment options exist for localized PCa, but metastatic PCa has fewer treatment options and shorter patient survival. PCa and bone health are strongly entwined, as PCa commonly metastasizes to the skeleton. Since androgen receptor signaling drives PCa growth, androgen-deprivation therapy whose sequelae reduce bone strength constitutes the foundation of advanced PCa treatment. The homeostatic process of bone remodeling - produced by concerted actions of bone-building osteoblasts, bone-resorbing osteoclasts, and regulatory osteocytes - may also be subverted by PCa to promote metastatic growth. Mechanisms driving skeletal development and homeostasis, such as regional hypoxia or matrix-embedded growth factors, may be subjugated by bone metastatic PCa. In this way, the biology that sustains bone is integrated into adaptive mechanisms for the growth and survival of PCa in bone. Skeletally metastatic PCa is difficult to investigate due to the entwined nature of bone biology and cancer biology. Herein, we survey PCa from origin, presentation, and clinical treatment to bone composition and structure and molecular mediators of PCa metastasis to bone. Our intent is to quickly yet effectively reduce barriers to team science across multiple disciplines that focuses on PCa and metastatic bone disease. We also introduce concepts of tissue engineering as a novel perspective to model, capture, and study complex cancer-microenvironment interactions.
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Affiliation(s)
- Kristina V Wells
- Department of Anatomy, Physiology, and Cell Biology, University of California Davis School of Veterinary Medicine, Davis, California, USA
| | - Margaret L Krackeler
- Department of Internal Medicine, University of California Davis School of Medicine, Sacramento, California, USA
| | - Maitreyee K Jathal
- Department of Medical Microbiology and Immunology, University of California Davis, Davis, California, USA
- Veterans Affairs-Northern California Health System, Mather, California, USA
| | - Mamta Parikh
- Division of Hematology and Oncology, School of Medicine, University of California Davis, Sacramento, California, USA
| | - Paramita M Ghosh
- Veterans Affairs-Northern California Health System, Mather, California, USA
- Department of Urologic Surgery, School of Medicine, University of California Davis, Sacramento, California, USA
| | - J Kent Leach
- Department of Orthopaedic Surgery, School of Medicine, University of California Davis, Sacramento, California, USA
- Department of Biomedical Engineering, University of California Davis, Davis, California, USA
| | - Damian C Genetos
- Department of Anatomy, Physiology, and Cell Biology, University of California Davis School of Veterinary Medicine, Davis, California, USA
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21
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Choi SY, Kim JW, Oh SH, Cheon S, Yee J, Kim SJ, Gwak HS, Chung JE. Prediction of medication-related osteonecrosis of the jaws using machine learning methods from estrogen receptor 1 polymorphisms and clinical information. Front Med (Lausanne) 2023; 10:1140620. [PMID: 37415765 PMCID: PMC10321771 DOI: 10.3389/fmed.2023.1140620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 05/23/2023] [Indexed: 07/08/2023] Open
Abstract
Objective The purpose of this study was to evaluate the effect of estrogen receptor 1 (ESR1) polymorphisms on the development of medication-related osteonecrosis of the jaws (MRONJ) in women with osteoporosis. Methods A total of 125 patients taking bisphosphonates was evaluated the relationship between MRONJ occurrence and single nucleotide polymorphisms (SNPs) of ESR1. Clinical information was collected, including current age, treatment duration, and comorbidity. Univariate and Multivariable regression analyzes were performed to evaluate the independent predictive factors for MRONJ occurrence. Predictive models were constructed using machine learning methods such as Lasso regression, Random forest (RF), and Support vector machine (SVM). The area under the receiver-operating curve (AUROC) was used to evaluate the performance of a binary classifier. Result Two SNPs of ESR1 (rs4870056 and rs78177662) were significantly associated with MRONJ development. Patients with variant allele (A) of rs4870056 showed 2.45 times (95% CI, 1.03-5.87) the odds of MRONJ occurrence compared to those with wild-type homozygote (GG) after adjusting covariates. Additionally, carriers with variant allele (T) of rs78177662 had higher odds than those with wild-type homozygote (CC) (adjusted odds ratio (aOR), 2.64, 95% CI, 1.00-6.94). Among demographic variables, age ≥ 72 years (aOR, 3.98, 95% CI, 1.60-9.87) and bisphosphonate exposure ≥48 months (aOR, 3.16, 95% CI, 1.26-7.93) were also significant risk factors for MRONJ occurrence. AUROC values of machine learning methods ranged between 0.756-0.806 in the study. Conclusion Our study showed that the MRONJ occurrence was associated with ESR1 polymorphisms in osteoporotic women.
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Affiliation(s)
- Seo-Yong Choi
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - Jin-Woo Kim
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Sang-Hyeon Oh
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - Seunghyun Cheon
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
| | - Jeong Yee
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - Sun-Jong Kim
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Hye Sun Gwak
- College of Pharmacy and Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - Jee-Eun Chung
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Republic of Korea
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22
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Warren A, Porter RM, Reyes-Castro O, Ali MM, Marques-Carvalho A, Kim HN, Gatrell LB, Schipani E, Nookaew I, O'Brien CA, Morello R, Almeida M. The NAD salvage pathway in mesenchymal cells is indispensable for skeletal development in mice. Nat Commun 2023; 14:3616. [PMID: 37330524 PMCID: PMC10276814 DOI: 10.1038/s41467-023-39392-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 06/09/2023] [Indexed: 06/19/2023] Open
Abstract
NAD is an essential co-factor for cellular energy metabolism and multiple other processes. Systemic NAD+ deficiency has been implicated in skeletal deformities during development in both humans and mice. NAD levels are maintained by multiple synthetic pathways but which ones are important in bone forming cells is unknown. Here, we generate mice with deletion of Nicotinamide Phosphoribosyltransferase (Nampt), a critical enzyme in the NAD salvage pathway, in all mesenchymal lineage cells of the limbs. At birth, NamptΔPrx1 exhibit dramatic limb shortening due to death of growth plate chondrocytes. Administration of the NAD precursor nicotinamide riboside during pregnancy prevents the majority of in utero defects. Depletion of NAD post-birth also promotes chondrocyte death, preventing further endochondral ossification and joint development. In contrast, osteoblast formation still occurs in knockout mice, in line with distinctly different microenvironments and reliance on redox reactions between chondrocytes and osteoblasts. These findings define a critical role for cell-autonomous NAD homeostasis during endochondral bone formation.
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Affiliation(s)
- Aaron Warren
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Ryan M Porter
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Olivia Reyes-Castro
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Md Mohsin Ali
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Adriana Marques-Carvalho
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, Cantanhede, Portugal
| | - Ha-Neui Kim
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Landon B Gatrell
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Ernestina Schipani
- Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - Intawat Nookaew
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Department of Biomedical Informatics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Charles A O'Brien
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Roy Morello
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA
- Department of Physiology and Cell Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Maria Almeida
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
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23
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Meczekalski B, Niwczyk O, Bala G, Szeliga A. Managing Early Onset Osteoporosis: The Impact of Premature Ovarian Insufficiency on Bone Health. J Clin Med 2023; 12:4042. [PMID: 37373735 DOI: 10.3390/jcm12124042] [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: 04/26/2023] [Revised: 05/21/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Premature ovarian insufficiency is a reproductive endocrine disorder characterized by the cessation of ovarian function before the age of 40 years. Although the etiopathology of POI remains largely unknown, certain causative factors have been identified. Individuals affected by POI are at an increased risk of experiencing bone mineral density (BMD) loss. Hormonal replacement therapy (HRT) is recommended for patients with POI to mitigate the risk of decreased BMD, starting from the time of diagnosis until reaching the average age of natural menopause. Various studies have compared the dose-effect relationship of estradiol supplementation, as well as different HRT formulations on BMD. The impact of oral contraception on reduced BMD or the potential benefits of adding testosterone to estrogen replacement therapy are still subjects of ongoing discussion. This review provides an overview of the latest advancements in the diagnosis, evaluation, and treatment of POI as it relates to BMD loss.
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Affiliation(s)
- Blazej Meczekalski
- Department of Gynecological Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland
| | - Olga Niwczyk
- Department of Gynecological Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland
| | - Gregory Bala
- UCD School of Medicine, University College Dublin, D04 V1W8 Dublin, Ireland
| | - Anna Szeliga
- Department of Gynecological Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland
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Wang P, Huang L, Yang F, Chen W, Bai D, Guo Y. YAP/TEAD1 and β-catenin/LEF1 synergistically induce estrogen receptor α to promote osteogenic differentiation of bone marrow stromal cells. MedComm (Beijing) 2023; 4:e246. [PMID: 37197086 PMCID: PMC10183651 DOI: 10.1002/mco2.246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 02/25/2023] [Accepted: 03/01/2023] [Indexed: 05/19/2023] Open
Abstract
Bone remodeling is vital to the maintenance of bone homeostasis and may lead to destructive skeletal diseases once the balance is disrupted. Crosstalk between Wnt and estrogen receptor (ER) signaling has been proposed in bone remodeling, but the underlying mechanism remains unclear. This study was designed to explore the effect of Wnt-ER signaling during the osteogenic differentiation of bone marrow stromal cells (BMSCs). Rat BMSCs were isolated and identified using flow cytometry and stimulated with Wnt3a. Wnt3a treatment promoted osteogenic differentiation and mineralization of the BMSCs. Meanwhile, Wnt3a enhanced the expression of ERα as well as the canonical Wnt signaling mediator β-catenin and the alternative Wnt signaling effector Yes-associated protein 1 (YAP1). Interestingly, DNA pulldown assay revealed direct binding of transcriptional enhanced associate domain 1 (TEAD1) and lymphoid enhancer binding factor 1 (LEF1), transcriptional partners of YAP1 and β-catenin, respectively, to the promoter region of ERα. In addition, inhibition of TEAD1 and LEF1 suppressed Wnt3-promoted BMSC osteogenic differentiation and blocked Wnt3a-induced ERα expression. Furthermore, an in vivo model of femoral bone defect also supported that Wnt3a facilitated bone healing in an ERα-dependent way. Together, we suggest that Wnt3a promotes the osteogenic activity of BMSCs through YAP1 and β-catenin-dependent activation of ERα, via direct binding of TEAD1 and LEF1 to the ERα promoter.
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Affiliation(s)
- Peiqi Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Lingyi Huang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Fan Yang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Wanxi Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Ding Bai
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Yongwen Guo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of OrthodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
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25
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Fuller KNZ, Allen J, Kumari R, Akakpo JY, Ruebel M, Shankar K, Thyfault JP. Pre- and Post-Sexual Maturity Liver-specific ERα Knockout Does Not Impact Hepatic Mitochondrial Function. J Endocr Soc 2023; 7:bvad053. [PMID: 37197409 PMCID: PMC10184454 DOI: 10.1210/jendso/bvad053] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Indexed: 05/19/2023] Open
Abstract
Compared with males, premenopausal women and female rodents are protected against hepatic steatosis and present with higher functioning mitochondria (greater hepatic mitochondrial respiration and reduced H2O2 emission). Despite evidence that estrogen action mediates female protection against steatosis, mechanisms remain unknown. Here we validated a mouse model with inducible reduction of liver estrogen receptor alpha (ERα) (LERKO) via adeno-associated virus (AAV) Cre. We phenotyped the liver health and mitochondrial function of LERKO mice (n = 10-12 per group) on a short-term high-fat diet (HFD), and then tested whether timing of LERKO induction at 2 timepoints (sexually immature: 4 weeks old [n = 11 per group] vs sexually mature: 8-10 weeks old [n = 8 per group]) would impact HFD-induced outcomes. We opted for an inducible LERKO model due to known estrogen-mediated developmental programming, and we reported both receptor and tissue specificity with our model. Control mice were ERαfl/fl receiving AAV with green fluorescent protein (GFP) only. Results show that there were no differences in body weight/composition or hepatic steatosis in LERKO mice with either short-term (4-week) or chronic (8-week) high-fat feeding. Similarly, LERKO genotype nor timing of LERKO induction (pre vs post sexual maturity) did not alter hepatic mitochondrial O2 and H2O2 flux, coupling, or OXPHOS protein. Transcriptomic analysis showed that hepatic gene expression in LERKO was significantly influenced by developmental stage. Together, these studies suggest that hepatic ERα is not required in female protection against HFD-induced hepatic steatosis nor does it mediate sexual dimorphism in liver mitochondria function.
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Affiliation(s)
- Kelly N Z Fuller
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Research Service, Kansas City Veterans Affairs Medical Center, Kansas City, KS 64128, USA
| | - Julie Allen
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Research Service, Kansas City Veterans Affairs Medical Center, Kansas City, KS 64128, USA
| | - Roshan Kumari
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Research Service, Kansas City Veterans Affairs Medical Center, Kansas City, KS 64128, USA
| | - Jephte Y Akakpo
- Department of Pharmacology and Toxicology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Meghan Ruebel
- USDA-ARS, Southeast Area, Arkansas Children’s Nutrition Center, Little Rock, AR 72202, USA
| | - Kartik Shankar
- USDA-ARS, Southeast Area, Arkansas Children’s Nutrition Center, Little Rock, AR 72202, USA
| | - John P Thyfault
- Department of Cell Biology and Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Research Service, Kansas City Veterans Affairs Medical Center, Kansas City, KS 64128, USA
- KU Diabetes Institute and Kansas Center for Metabolism and Obesity, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Department of Internal Medicine, Division of Endocrinology and Metabolism, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Center for Children’s Healthy Lifestyles and Nutrition, Kansas City, MO 64108, USA
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26
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Marques-Carvalho A, Sardão VA, Kim HN, Almeida M. ECSIT is essential for RANKL-induced stimulation of mitochondria in osteoclasts and a target for the anti-osteoclastogenic effects of estrogens. Front Endocrinol (Lausanne) 2023; 14:1110369. [PMID: 37152948 PMCID: PMC10157190 DOI: 10.3389/fendo.2023.1110369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/27/2023] [Indexed: 05/09/2023] Open
Abstract
Introduction Estrogens inhibit bone resorption and preserve bone mass, at least in part, via direct effects on osteoclasts. The binding of RANKL, the critical cytokine for osteoclast differentiation, to its receptor in osteoclast precursor cells of the monocyte lineage recruits the adaptor protein TRAF6 and activates multiple signaling pathways. Early effects of RANKL include stimulation of mitochondria. 17β-estradiol (E2) prevents the effects of RANKL on mitochondria and promotes mitochondria mediated apoptotic cell death. However, the molecular mechanisms responsible for the actions of RANKL and estrogens on mitochondria remain unknown. Evolutionarily Conserved Signaling Intermediate in Toll Pathway (ECSIT) is a complex I-associated protein that regulates immune responses in macrophages following the engagement of Toll-like receptors, which also recruit TRAF6. Here, we examined whether ECSIT could be implicated in the rapid effects of RANKL and E2 on osteoclast progenitors. Methods Bone marrow-derived macrophages (BMMs) from C57BL/6 mice were cultured with RANKL (30 ng/ml) with or without E2 (10-8 M). ECSIT-TRAF6 interaction was evaluated by co-immunoprecipitation and ECSIT levels in mitochondria and cytosolic fractions by Western blot. ShRNA lentivirus particles were used to knockdown ECSIT. Osteoclasts were enumerated after tartrate-resistant acid phosphatase staining. Oxygen consumption and extracellular acidification rates were measured with Seahorse XFe96 Analyzer. ATP, lactate, and NAD/NADH were measured with commercial assay kits. NADH oxidation to NAD was used to evaluate Complex I activity. Total and mitochondrial ROS, and mitochondrial membrane potential were measured with H2DCFDA, MitoSOX, and TMRM probes, respectively. Degradation of DEVD-AFC was used to measure Caspase-3 activity. Results We found that RANKL promoted ECSIT-TRAF6 interaction and increased the levels of ECSIT in mitochondria. E2 abrogated these effects of RANKL. Silencing of ECSIT decreased osteoclast differentiation and abrogated the inhibitory effects of E2 on osteoclastogenesis. Loss of ECSIT decreased complex I activity, oxygen consumption, NAD+/NADH redox ratio, and ATP production and increased mitochondrial ROS. In the absence of ECSIT, the stimulatory actions of RANKL on complex I activity and all other markers of oxidative phosphorylation, as well as their inhibition by E2, were prevented. Instead, RANKL stimulated apoptosis of osteoclast progenitors. Discussion These findings suggest that dysregulated mitochondria cause a switch in RANKL signaling from pro-survival to pro-apoptotic. In addition, our results indicate that ECSIT represents a central node for the early effects of RANKL on mitochondria and that inhibition of ECSIT-mediated mitochondria stimulation might contribute to the bone protective actions of estrogens.
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Affiliation(s)
- Adriana Marques-Carvalho
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- CIBB - Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- PhD Program in Experimental Biology and Biomedicine (PDBEB), Institute for Interdisciplinary Research (IIIUC), University of Coimbra, Coimbra, Portugal
| | - Vilma A. Sardão
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- CIBB - Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- Multidisciplinary Institute of Aging (MIA-Portugal), University of Coimbra, Coimbra, Portugal
| | - Ha-Neui Kim
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, United States
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, United States
| | - Maria Almeida
- Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, Little Rock, AR, United States
- Center for Musculoskeletal Disease Research, University of Arkansas for Medical Sciences, Little Rock, AR, United States
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, United States
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27
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Burciaga SD, Saavedra F, Fischer L, Johnstone K, Jensen ED. Protein kinase D3 conditional knockout impairs osteoclast formation and increases trabecular bone volume in male mice. Bone 2023; 172:116759. [PMID: 37044359 DOI: 10.1016/j.bone.2023.116759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/15/2023] [Accepted: 04/04/2023] [Indexed: 04/14/2023]
Abstract
Studies using kinase inhibitors have shown that the protein kinase D (PRKD) family of serine/threonine kinases are required for formation and function of osteoclasts in culture. However, the involvement of individual protein kinase D genes and their in vivo significance to skeletal dynamics remains unclear. In the current study we present data indicating that protein kinase D3 is the primary form of PRKD expressed in osteoclasts. We hypothesized that loss of PRKD3 would impair osteoclast formation, thereby decreasing bone resorption and increasing bone mass. Conditional knockout (cKO) of Prkd3 using a murine Cre/Lox system driven by cFms-Cre revealed that its loss in osteoclast-lineage cells reduced osteoclast differentiation and resorptive function in culture. Examination of the Prkd3 cKO mice showed that bone parameters were unaffected in the femur at 4 weeks of age, but consistent with our hypothesis, Prkd3 conditional knockout resulted in 18 % increased trabecular bone mass in male mice at 12 weeks and a similar increase at 6 months. These effects were not observed in female mice. As a further test of our hypothesis, we asked if Prkd3 cKO could protect against bone loss in a ligature-induced periodontal disease model but did not see any reduction in bone destruction in this system. Together, our data indicate that PRKD3 promotes osteoclastogenesis both in vitro and in vivo.
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Affiliation(s)
- Samuel D Burciaga
- Department of Diagnostic & Biological Sciences, University of Minnesota School of Dentistry, Minneapolis, MN 55455, USA
| | - Flavia Saavedra
- Department of Diagnostic & Biological Sciences, University of Minnesota School of Dentistry, Minneapolis, MN 55455, USA
| | - Lori Fischer
- Department of Diagnostic & Biological Sciences, University of Minnesota School of Dentistry, Minneapolis, MN 55455, USA
| | - Karen Johnstone
- Department of Diagnostic & Biological Sciences, University of Minnesota School of Dentistry, Minneapolis, MN 55455, USA
| | - Eric D Jensen
- Department of Diagnostic & Biological Sciences, University of Minnesota School of Dentistry, Minneapolis, MN 55455, USA.
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28
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Wang X, Shao L, Richardson KK, Ling W, Warren A, Krager K, Aykin-Burns N, Hromas R, Zhou D, Almeida M, Kim HN. Hematopoietic cytoplasmic adaptor protein Hem1 promotes osteoclast fusion and bone resorption in mice. J Biol Chem 2023; 299:102841. [PMID: 36574841 PMCID: PMC9867982 DOI: 10.1016/j.jbc.2022.102841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/25/2022] Open
Abstract
Hem1 (hematopoietic protein 1), a hematopoietic cell-specific member of the Hem family of cytoplasmic adaptor proteins, is essential for lymphopoiesis and innate immunity as well as for the transition of hematopoiesis from the fetal liver to the bone marrow. However, the role of Hem1 in bone cell differentiation and bone remodeling is unknown. Here, we show that deletion of Hem1 resulted in a markedly increase in bone mass because of defective bone resorption in mice of both sexes. Hem1-deficient osteoclast progenitors were able to differentiate into osteoclasts, but the osteoclasts exhibited impaired osteoclast fusion and decreased bone-resorption activity, potentially because of decreased mitogen-activated protein kinase and tyrosine kinase c-Abl activity. Transplantation of bone marrow hematopoietic stem and progenitor cells from wildtype into Hem1 knockout mice increased bone resorption and normalized bone mass. These findings indicate that Hem1 plays a pivotal role in the maintenance of normal bone mass.
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Affiliation(s)
- Xiaoyan Wang
- Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Lijian Shao
- Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Kimberly K Richardson
- Division of Endocrinology, Department of Internal Medicine, Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Wen Ling
- Division of Endocrinology, Department of Internal Medicine, Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Aaron Warren
- Division of Endocrinology, Department of Internal Medicine, Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA; Central Arkansas Veterans Healthcare System, Little Rock, Arkansas, USA
| | - Kimberly Krager
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Nukhet Aykin-Burns
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Robert Hromas
- Department of Medicine, The Long School of Medicine, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Daohong Zhou
- Department of Pharmaceutical Sciences and Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA; Department of Pharmacodynamics, University of Florida, Gainesville, Florida, USA
| | - Maria Almeida
- Division of Endocrinology, Department of Internal Medicine, Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA; Central Arkansas Veterans Healthcare System, Little Rock, Arkansas, USA; Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
| | - Ha-Neui Kim
- Division of Endocrinology, Department of Internal Medicine, Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA; Central Arkansas Veterans Healthcare System, Little Rock, Arkansas, USA.
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29
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Abstract
Changes in bone architecture and metabolism with aging increase the likelihood of osteoporosis and fracture. Age-onset osteoporosis is multifactorial, with contributory extrinsic and intrinsic factors including certain medical problems, specific prescription drugs, estrogen loss, secondary hyperparathyroidism, microenvironmental and cellular alterations in bone tissue, and mechanical unloading or immobilization. At the histological level, there are changes in trabecular and cortical bone as well as marrow cellularity, lineage switching of mesenchymal stem cells to an adipogenic fate, inadequate transduction of signals during skeletal loading, and predisposition toward senescent cell accumulation with production of a senescence-associated secretory phenotype. Cumulatively, these changes result in bone remodeling abnormalities that over time cause net bone loss typically seen in older adults. Age-related osteoporosis is a geriatric syndrome due to the multiple etiologies that converge upon the skeleton to produce the ultimate phenotypic changes that manifest as bone fragility. Bone tissue is dynamic but with tendencies toward poor osteoblastic bone formation and relative osteoclastic bone resorption with aging. Interactions with other aging physiologic systems, such as muscle, may also confer detrimental effects on the aging skeleton. Conversely, individuals who maintain their BMD experience a lower risk of fractures, disability, and mortality, suggesting that this phenotype may be a marker of successful aging. © 2023 American Physiological Society. Compr Physiol 13:4355-4386, 2023.
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Affiliation(s)
- Robert J Pignolo
- Department of Medicine, Divisions of Geriatric Medicine and Gerontology, Endocrinology, and Hospital Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA.,The Department of Physiology and Biomedical Engineering, and the Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, Minnesota, USA
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Abstract
Osteoclasts are multinucleated cells with the unique ability to resorb bone matrix. Excessive production or activation of osteoclasts leads to skeletal pathologies that affect a significant portion of the population. Although therapies that effectively target osteoclasts have been developed, they are associated with sometimes severe side effects, and a fuller understanding of osteoclast biology may lead to more specific treatments. Along those lines, a rich body of work has defined essential signaling pathways required for osteoclast formation, function, and survival. Nonetheless, recent studies have cast new light on long-held views regarding the origin of these cells during development and homeostasis, their life span, and the cellular sources of factors that drive their production and activity during homeostasis and disease. In this review, we discuss these new findings in the context of existing work and highlight areas of ongoing and future investigation.
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Affiliation(s)
- Deborah J Veis
- Division of Bone and Mineral Diseases, Musculoskeletal Research Center; and Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA; .,Shriners Hospitals for Children, St. Louis, Missouri, USA
| | - Charles A O'Brien
- Center for Musculoskeletal Disease Research, Division of Endocrinology, and Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.,Central Arkansas Veterans Healthcare System, Little Rock, Arkansas, USA
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31
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Feng S, Li J, Tian J, Lu S, Zhao Y. Application of Single-Cell and Spatial Omics in Musculoskeletal Disorder Research. Int J Mol Sci 2023; 24:2271. [PMID: 36768592 PMCID: PMC9917071 DOI: 10.3390/ijms24032271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/16/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023] Open
Abstract
Musculoskeletal disorders, including fractures, scoliosis, heterotopic ossification, osteoporosis, osteoarthritis, disc degeneration, and muscular injury, etc., can occur at any stage of human life. Understanding the occurrence and development mechanism of musculoskeletal disorders, as well as the changes in tissues and cells during therapy, might help us find targeted treatment methods. Single-cell techniques provide excellent tools for studying alterations at the cellular level of disorders. However, the application of these techniques in research on musculoskeletal disorders is still limited. This review summarizes the current single-cell and spatial omics used in musculoskeletal disorders. Cell isolation, experimental methods, and feasible experimental designs for single-cell studies of musculoskeletal system diseases have been reviewed based on tissue characteristics. Then, the paper summarizes the latest findings of single-cell studies in musculoskeletal disorders from three aspects: bone and ossification, joint, and muscle and tendon disorders. Recent discoveries about the cell populations involved in these diseases are highlighted. Furthermore, the therapeutic responses of musculoskeletal disorders, especially single-cell changes after the treatments of implants, stem cell therapies, and drugs are described. Finally, the application potential and future development directions of single-cell and spatial omics in research on musculoskeletal diseases are discussed.
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Affiliation(s)
- Site Feng
- School of Medicine, Tsinghua University, Beijing 100084, China
| | - Jiahao Li
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing 100730, China
| | - Jingjing Tian
- Medical Science Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Sheng Lu
- The Key Laboratory of Digital Orthopaedics of Yunnan Provincial, Department of Orthopedic Surgery, The First People’s Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650032, China
| | - Yu Zhao
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Science, Beijing 100730, China
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Xu X, Yang H, Bullock WA, Gallant MA, Ohlsson C, Bellido TM, Main RP. Osteocyte Estrogen Receptor β (Ot-ERβ) Regulates Bone Turnover and Skeletal Adaptive Response to Mechanical Loading Differently in Male and Female Growing and Adult Mice. J Bone Miner Res 2023; 38:186-197. [PMID: 36321245 PMCID: PMC10108310 DOI: 10.1002/jbmr.4731] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 10/15/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022]
Abstract
Age-related bone loss is a failure of balanced bone turnover and diminished skeletal mechanoadaptation. Estrogen receptors, ERα and ERβ, play critical roles in osteoprotective regulation activated by estrogen and mechanical signals. Previous studies mainly focused on ERα and showed that osteocyte-ERα (Ot-ERα) regulated trabecular, but not cortical bone, and played a minor role in load-induced cortical adaptation. However, the role of Ot-ERβ in bone mass regulation remains unrevealed. To address this issue, we characterized bone (re)modeling and gene expression in male and female mice with Ot-ERβ deletion (ERβ-dOT) and littermate control (LC) at 10 weeks (young) or 28 weeks (adult) of age, as well as their responses to in vivo tibial compressive loading. Increased cancellous bone mass appeared in the L4 vertebral body of young male ERβ-dOT mice. At the same time, femoral cortical bone gene expression showed signs consistent with elevated osteoblast and osteoclast activities (type-I collagen, Cat K, RANKL). Upregulated androgen receptor (AR) expression was observed in young male ERβ-dOT mice relative to LC, suggesting a compensatory effect of testosterone on male bone protection. In contrast, bone mass in L4 decreased in adult male ERβ-dOT mice, attributed to potentially increased bone resorption activity (Cat K) with no change in bone formation. There was no effect of ERβ-dOT on bone mass or gene expression in female mice. Sex-dependent regulation of Ot-ERβ also appeared in load-induced cortical responsiveness. Young female ERβ-dOT mice showed an enhanced tibial cortical anabolic adaptation compared with LC. In contrast, an attenuated cortical anabolic response presented at the proximal tibia in male ERβ-dOT mice at both ages. For the first time, our findings suggest that Ot-ERβ regulates bone (re)modeling and the response to mechanical signals through different mechanisms in males and females. © 2022 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Xiaoyu Xu
- Weldon School of Biomedical EngineeringPurdue UniversityWest LafayetteINUSA
- Musculoskeletal Biology and Mechanics Lab, Department of Basic Medical SciencesPurdue UniversityWest LafayetteINUSA
| | - Haisheng Yang
- Department of Biomedical Engineering, Faculty of Environment and LifeBeijing University of TechnologyBeijingChina
| | | | - Maxim A. Gallant
- Musculoskeletal Biology and Mechanics Lab, Department of Basic Medical SciencesPurdue UniversityWest LafayetteINUSA
| | - Claes Ohlsson
- Sahlgrenska Osteoporosis Centre, Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical NutritionInstitute of Medicine, Sahlgrenska Academy, University of GothenburgGothenburgSweden
- Department of Drug TreatmentSahlgrenska University HospitalGothenburgSweden
| | - Teresita M. Bellido
- Department of Physiology and Cell BiologyUniversity of Arkansas for Medical SciencesLittle RockARUSA
| | - Russell P. Main
- Weldon School of Biomedical EngineeringPurdue UniversityWest LafayetteINUSA
- Musculoskeletal Biology and Mechanics Lab, Department of Basic Medical SciencesPurdue UniversityWest LafayetteINUSA
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Douglass A, Dattilo M, Feola AJ. Evidence for Menopause as a Sex-Specific Risk Factor for Glaucoma. Cell Mol Neurobiol 2023; 43:79-97. [PMID: 34981287 PMCID: PMC9250947 DOI: 10.1007/s10571-021-01179-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 12/03/2021] [Indexed: 01/07/2023]
Abstract
Glaucoma is a leading cause of irreversible blindness worldwide and is characterized by progressive loss of visual function and retinal ganglion cells (RGC). Current epidemiological, clinical, and basic science evidence suggest that estrogen plays a role in the aging of the optic nerve. Menopause, a major biological life event affecting all women, coincides with a decrease in circulating sex hormones, such as estrogen. While 59% of the glaucomatous population are females, sex is not considered a risk factor for developing glaucoma. In this review, we explore whether menopause is a sex-specific risk factor for glaucoma. First, we investigate how menopause is defined as a sex-specific risk factor for other pathologies, including cardiovascular disease, osteoarthritis, and bone health. Next, we discuss clinical evidence that highlights the potential role of menopause in glaucoma. We also highlight preclinical studies that demonstrate larger vision and RGC loss following surgical menopause and how estrogen is protective in models of RGC injury. Lastly, we explore how surgical menopause and estrogen signaling are related to risk factors associated with developing glaucoma (e.g., intraocular pressure, aqueous outflow resistance, and ocular biomechanics). We hypothesize that menopause potentially sets the stage to develop glaucoma and therefore is a sex-specific risk factor for this disease.
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Affiliation(s)
- Amber Douglass
- grid.484294.7Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Healthcare System, Decatur, GA USA
| | - Michael Dattilo
- grid.189967.80000 0001 0941 6502Department of Ophthalmology, Emory Eye Center, Emory University School of Medicine, B2503, Clinic B Building, 1365B Clifton Road NE, Atlanta, GA 30322 USA ,grid.414026.50000 0004 0419 4084Department of Ophthalmology, Atlanta Veterans Affairs Medical Center, Atlanta, GA USA ,grid.213917.f0000 0001 2097 4943Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA USA
| | - Andrew J. Feola
- grid.484294.7Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Healthcare System, Decatur, GA USA ,grid.189967.80000 0001 0941 6502Department of Ophthalmology, Emory Eye Center, Emory University School of Medicine, B2503, Clinic B Building, 1365B Clifton Road NE, Atlanta, GA 30322 USA ,grid.213917.f0000 0001 2097 4943Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA USA
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Sorohan MC, Poiana C. Vertebral Fractures in Acromegaly: A Systematic Review. J Clin Med 2022; 12:jcm12010164. [PMID: 36614962 PMCID: PMC9821150 DOI: 10.3390/jcm12010164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/17/2022] [Accepted: 12/20/2022] [Indexed: 12/28/2022] Open
Abstract
INTRODUCTION Acromegaly is characterized by a very particular alteration of bone microarchitecture, leading to increased vertebral fragility. However, due to inconsistent and insufficient evidence, no guidelines are available for the evaluation of this osteopathy. METHODS We performed a literature review of studies published between 1968 and January 2022 on the PubMed and SCOPUS databases using the terms "acromegaly" and "vertebral fractures". Twenty-four studies were found eligible for inclusion, published between June 2005 and November 2021. Included studies evaluated acromegaly patients, who were assessed for the presence of vertebral fractures. We excluded case reports, reviews, meta-analyses, letters to the editor, articles not written in English, and research performed on the same set of patients without significant differences in study design. Risk of bias was avoided by following the ROBIS risk of bias recommendations. We executed rigorous data collection, and the results are depicted as a narrative overview, but also, as statistical synthesis. Limitations of the evidence presented in the study include study heterogeneity, small sample sizes, and a small number of prospective studies with short follow-up. FINDINGS Data regarding vertebral fractures (VFs) in acromegaly and their influencing factors are variable. Twenty-four studies were included, nine out of which had a prospective design. The smallest group of acromegaly patients had 18 subjects and the largest included 248 patients. Prevalence ranges between 6.5% and 87.1%, although most studies agree that it is significantly higher than in controls. VFs also have a higher incidence (between 5.6% and 42%) and are more frequently multiple (between 46.15% and 71%). Evidence shows that disease activity and active disease duration are influencing factors for the prevalence and incidence of VFs. Nonetheless, hypogonadism does not seem to influence the frequency of VFs. While reports are conflicting regarding the use of bone mineral density in acromegaly, evidence seems to be slightly in favor of it not being associated with VFs. However, trabecular bone score is significantly lower in fractured patients, although no prospective studies are available. INTERPRETATION Vertebral fractures evaluation should be performed with regularity in all acromegalic patients, especially in the presence of active disease. Disease activity is an important determinant of vertebral fracture incidence and prevalence, although hypogonadism is less so. To clarify the predictive value of both BMD and TBS for vertebral fractures, additional, larger, prospective studies are necessary.
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Affiliation(s)
- Madalina Cristina Sorohan
- CI Parhon National Institute of Endocrinology, 011863 Bucharest, Romania
- Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
- Correspondence:
| | - Catalina Poiana
- CI Parhon National Institute of Endocrinology, 011863 Bucharest, Romania
- Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
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Landwehr VC, Fretwurst T, Heinen J, Vach K, Nelson K, Nahles S, Iglhaut G. Association of sex steroid hormones and new bone formation rate after iliac onlay grafting: a prospective clinical pilot study. Int J Implant Dent 2022; 8:53. [PMCID: PMC9663769 DOI: 10.1186/s40729-022-00447-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 10/05/2022] [Indexed: 11/16/2022] Open
Abstract
Abstract
Purpose
The present prospective study evaluates the association between new bone formation rate in the iliac onlay graft and sex steroid hormone serum levels.
Methods
A total of 15 partially or completely edentulous postmenopausal females and 9 males with less than 5 mm height of the remaining alveolar bone underwent iliac onlay grafting followed by dental implant placement using a two-stage approach. Sex hormone binding globulin and 17β-estradiol serum levels were investigated by electrochemiluminescence immunoassay, while total testosterone level was analyzed using radioimmunoassay. At the time of implant placement, 12 weeks after grafting, bone biopsies were obtained and analyzed histomorphometrically. Statistical analysis was performed using linear mixed models.
Results
Grafting procedure was successfully performed in all patients. The mean new bone formation rate was 32.5% (116 samples). In men the mean new bone formation rate (38.1%) was significantly higher (p < 0.01) than in women (27.6%). Independent of gender 17β-estradiol and testosterone were positively associated to overall new bone formation rate, albeit a significant influence was only seen for 17β-estradiol in men (p = 0.020). Sex hormone binding globulin had no influence on new bone formation rate (p = 0.897). There was no significant association between new bone formation rate and age (p = 0.353) or new bone formation rate and body mass index (p = 0.248).
Conclusion
Positive association of 17ß-estradiol as well as testosterone with new bone formation rate after iliac onlay grafting indicates a role of sex steroid hormones in alveolar bone regeneration, although the observed influence was only significant for 17ß-estradiol in men.
Graphical Abstract
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36
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Kushwaha P, Alekos NS, Kim SP, Li Z, Wolfgang MJ, Riddle RC. Mitochondrial fatty acid β-oxidation is important for normal osteoclast formation in growing female mice. Front Physiol 2022; 13:997358. [PMID: 36187756 PMCID: PMC9515402 DOI: 10.3389/fphys.2022.997358] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/22/2022] [Indexed: 12/03/2022] Open
Abstract
Skeletal remodeling is an energy demanding process that is linked to nutrient availability and the levels of metabolic hormones. While recent studies have examined the metabolic requirements of bone formation by osteoblasts, much less is known about the energetic requirements of bone resorption by osteoclasts. The abundance of mitochondria in mature osteoclasts suggests that the production of an acidified micro-environment conducive to the ionization of hydroxyapatite, secretion of matrix-degrading enzymes, and motility during resorption requires significant energetic capacity. To investigate the contribution of mitochondrial long chain fatty acid β-oxidation to osteoclast development, we disrupted the expression of carnitine palmitoyltransferase-2 (Cpt2) in myeloid-lineage cells. Fatty acid oxidation increases dramatically in bone marrow cultures stimulated with RANKL and M-CSF and microCT analysis revealed that the genetic inhibition of long chain fatty acid oxidation in osteoclasts significantly increases trabecular bone volume in female mice secondary to reduced osteoclast numbers. In line with these data, osteoclast precursors isolated from Cpt2 mutants exhibit reduced capacity to form large-multinucleated osteoclasts, which was not rescued by exogenous glucose or pyruvate, and signs of an energetic stress response. Together, our data demonstrate that mitochondrial long chain fatty acid oxidation by the osteoclast is required for normal bone resorption as its inhibition produces an intrinsic defect in osteoclast formation.
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Affiliation(s)
- Priyanka Kushwaha
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Nathalie S. Alekos
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Soohyun P. Kim
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Zhu Li
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Michael J. Wolfgang
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Ryan C. Riddle
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, United States,Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD, United States,Baltimore Veterans Administration Medical Center, Baltimore, MD, United States,*Correspondence: Ryan C. Riddle,
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Doolittle ML, Saul D, Kaur J, Rowsey JL, Eckhardt B, Vos S, Grain S, Kroupova K, Ruan M, Weivoda M, Oursler MJ, Farr JN, Monroe DG, Khosla S. Skeletal Effects of Inducible ERα Deletion in Osteocytes in Adult Mice. J Bone Miner Res 2022; 37:1750-1760. [PMID: 35789113 PMCID: PMC9474695 DOI: 10.1002/jbmr.4644] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/28/2022] [Accepted: 07/02/2022] [Indexed: 11/12/2022]
Abstract
Estrogen is known to regulate bone metabolism in both women and men, but substantial gaps remain in our knowledge of estrogen and estrogen receptor alpha (ERα) regulation of adult bone metabolism. Studies using global ERα-knockout mice were confounded by high circulating sex-steroid levels, and osteocyte/osteoblast-specific ERα deletion may be confounded by ERα effects on growth versus the adult skeleton. Thus, we developed mice expressing the tamoxifen-inducible CreERT2 in osteocytes using the 8-kilobase (kb) Dmp1 promoter (Dmp1CreERT2 ). These mice were crossed with ERαfl//fl mice to create ERαΔOcy mice, permitting inducible osteocyte-specific ERα deletion in adulthood. After intermittent tamoxifen treatment of adult 4-month-old mice for 1 month, female, but not male, ERαΔOcy mice exhibited reduced spine bone volume fraction (BV/TV (-20.1%, p = 0.004) accompanied by decreased trabecular bone formation rate (-18.9%, p = 0.0496) and serum P1NP levels (-38.9%, p = 0.014). Periosteal (+65.6%, p = 0.004) and endocortical (+64.1%, p = 0.003) expansion were higher in ERαΔOcy mice compared to control (Dmp1CreERT2 ) mice at the tibial diaphysis, reflecting the known effects of estrogen to inhibit periosteal apposition and promote endocortical formation. Increases in Sost (2.1-fold, p = 0.001) messenger RNA (mRNA) levels were observed in trabecular bone at the spine in ERαΔOcy mice, consistent with previous reports that estrogen deficiency is associated with increased circulating sclerostin as well as bone SOST mRNA levels in humans. Further, the biological consequences of increased Sost expression were reflected in significant overall downregulation in panels of osteoblast and Wnt target genes in osteocyte-enriched bones from ERαΔOcy mice. These findings thus establish that osteocytic ERα is critical for estrogen action in female, but not male, adult bone metabolism. Moreover, the reduction in bone formation accompanied by increased Sost, decreased osteoblast, and decreased Wnt target gene expression in ERαΔOcy mice provides a direct link in vivo between ERα and Wnt signaling. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Madison L. Doolittle
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Dominik Saul
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Japneet Kaur
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Jennifer L. Rowsey
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Brittany Eckhardt
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Stephanie Vos
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Sarah Grain
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Kveta Kroupova
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
- University Hospital Hradec Kralove and the Faculty of Medicine in Hradec Kralove, Czech Republic
| | - Ming Ruan
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Megan Weivoda
- Robert and Arlene Kogod Center on Aging and Division of Hematology, Mayo Clinic College of Medicine, Rochester, MN
| | - Merry Jo Oursler
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Joshua N. Farr
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - David G. Monroe
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
| | - Sundeep Khosla
- Robert and Arlene Kogod Center on Aging and Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN
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Ledoux C, Boaretti D, Sachan A, Müller R, Collins CJ. Clinical Data for Parametrization of In Silico Bone Models Incorporating Cell-Cytokine Dynamics: A Systematic Review of Literature. Front Bioeng Biotechnol 2022; 10:901720. [PMID: 35910035 PMCID: PMC9335409 DOI: 10.3389/fbioe.2022.901720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 06/13/2022] [Indexed: 11/13/2022] Open
Abstract
In silico simulations aim to provide fast, inexpensive, and ethical alternatives to years of costly experimentation on animals and humans for studying bone remodeling, its deregulation during osteoporosis and the effect of therapeutics. Within the varied spectrum of in silico modeling techniques, bone cell population dynamics and agent-based multiphysics simulations have recently emerged as useful tools to simulate the effect of specific signaling pathways. In these models, parameters for cell and cytokine behavior are set based on experimental values found in literature; however, their use is currently limited by the lack of clinical in vivo data on cell numbers and their behavior as well as cytokine concentrations, diffusion, decay and reaction rates. Further, the settings used for these parameters vary across research groups, prohibiting effective cross-comparisons. This review summarizes and evaluates the clinical trial literature that can serve as input or validation for in silico models of bone remodeling incorporating cells and cytokine dynamics in post-menopausal women in treatment, and control scenarios. The GRADE system was used to determine the level of confidence in the reported data, and areas lacking in reported measures such as binding site occupancy, reaction rates and cell proliferation, differentiation and apoptosis rates were highlighted as targets for further research. We propose a consensus for the range of values that can be used for the cell and cytokine settings related to the RANKL-RANK-OPG, TGF-β and sclerostin pathways and a Levels of Evidence-based method to estimate parameters missing from clinical trial literature.
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Affiliation(s)
- Charles Ledoux
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | | | - Akanksha Sachan
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, India
| | - Ralph Müller
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
| | - Caitlyn J. Collins
- Institute for Biomechanics, ETH Zurich, Zurich, Switzerland
- Department for Biomedical Engineering and Mechanics, Virginia Tech, Blacksburg, VI,United States
- *Correspondence: Caitlyn J. Collins,
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Mmp13 deletion in mesenchymal cells increases bone mass and may attenuate the cortical bone loss caused by estrogen deficiency. Sci Rep 2022; 12:10257. [PMID: 35715555 PMCID: PMC9205908 DOI: 10.1038/s41598-022-14470-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 05/17/2022] [Indexed: 12/30/2022] Open
Abstract
The protective effect of estrogens against cortical bone loss is mediated via direct actions on mesenchymal cells, but functional evidence for the mediators of these effects has only recently begun to emerge. We report that the matrix metalloproteinase 13 (MMP13) is the highest up-regulated gene in mesenchymal cells from mice lacking the estrogen receptor alpha (ERα). In sham-operated female mice with conditional Mmp13 deletion in Prrx1 expressing cells (Mmp13ΔPrrx1), the femur and tibia length was lower as compared to control littermates (Mmp13f./f). Additionally, in the sham-operated female Mmp13ΔPrrx1 mice cortical thickness and trabecular bone volume in the femur and tibia were higher and osteoclast number at the endocortical surfaces was lower, whereas bone formation rate was unaffected. Notably, the decrease of cortical thickness caused by ovariectomy (OVX) in the femur and tibia of Mmp13f./f mice was attenuated in the Mmp13ΔPrrx1 mice; but the decrease of trabecular bone caused by OVX was not affected. These results reveal that mesenchymal cell-derived MMP13 may regulate osteoclast number and/or activity, bone resorption, and bone mass. And increased production of mesenchymal cell-derived factors may be important mediators of the adverse effect of estrogen deficiency on cortical, but not trabecular, bone.
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Effects of Dietary Protein Source and Quantity on Bone Morphology and Body Composition Following a High-Protein Weight-Loss Diet in a Rat Model for Postmenopausal Obesity. Nutrients 2022; 14:nu14112262. [PMID: 35684064 PMCID: PMC9183012 DOI: 10.3390/nu14112262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 12/10/2022] Open
Abstract
Higher protein (>30% of total energy, HP)-energy restriction (HP-ER) diets are an effective means to improve body composition and metabolic health. However, weight loss (WL) is associated with bone loss, and the impact of HP-ER diets on bone is mixed and controversial. Recent evidence suggests conflicting outcomes may stem from differences in age, hormonal status, and the predominant source of dietary protein consumed. Therefore, this study investigated the effect of four 12-week energy restriction (ER) diets varying in predominate protein source (beef, milk, soy, casein) and protein quantity (normal protein, NP 15% vs. high, 35%) on bone and body composition outcomes in 32-week-old obese, ovariectomized female rats. Overall, ER decreased body weight, bone quantity (aBMD, aBMC), bone microarchitecture, and body composition parameters. WL was greater with the NP vs. HP-beef and HP-soy diets, and muscle area decreased only with the NP diet. The HP-beef diet exacerbated WL-induced bone loss (increased trabecular separation and endocortical bone formation rates, lower bone retention and trabecular BMC, and more rod-like trabeculae) compared to the HP-soy diet. The HP-milk diet did not augment WL-induced bone loss. Results suggest that specific protein source recommendations may be needed to attenuate the adverse alterations in bone quality following an HP-ER diet in a model of postmenopausal obesity.
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Micro-computed tomography assessment of bone structure in aging mice. Sci Rep 2022; 12:8117. [PMID: 35581227 PMCID: PMC9114112 DOI: 10.1038/s41598-022-11965-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 04/20/2022] [Indexed: 11/30/2022] Open
Abstract
High-resolution computed tomography (CT) is widely used to assess bone structure under physiological and pathological conditions. Although the analytic protocols and parameters for micro-CT (μCT) analyses in mice are standardized for long bones, vertebrae, and the palms in aging mice, they have not yet been established for craniofacial bones. In this study, we conducted a morphometric assessment of craniofacial bones, in comparison with long bones, in aging mice. Although age-related changes were observed in the microarchitecture of the femur, tibia, vertebra, and basisphenoid bone, and were more pronounced in females than in males, the microarchitecture of both the interparietal bone and body of the mandible, which develop by intramembranous ossification, was less affected by age and sex. By contrast, the condyle of the mandible was more affected by aging in males compared to females. Taken together, our results indicate that mouse craniofacial bones are uniquely affected by age and sex.
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Hayakawa A, Kurokawa T, Kanemoto Y, Sawada T, Mori J, Kato S. Skeletal and gene-regulatory functions of nuclear sex steroid hormone receptors. J Bone Miner Metab 2022; 40:361-374. [PMID: 35076781 DOI: 10.1007/s00774-021-01306-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/16/2021] [Indexed: 10/19/2022]
Abstract
The wide variety of sex hormone actions underlie bone growth and health, and their actions mediate gene regulation by the cognate nuclear receptors. Nuclear androgen and estrogen receptors (AR, and ERα/ERβ) are hormone-dependent and DNA binding- transcription regulatory factors, and gene regulation by sex hormones often accompany with chromatin remodeling under aid of a number of co-regulators. As sex hormone biosynthesis is under highly regulated systemic and local regulations, the skeletal actions of sex hormones could be inferred from only the phenotypic abnormalities in skeleton in mouse genetic models deficient of nuclear receptors selectively in specific types of bone cells as well as at specific cell differentiation stages. Anabolic androgen actions and anti-bone resorptive estrogen actions are discussed here from the phenotypic abnormalities in such model mice. Though rapid gene regulation by sex hormones may not require chromatin reorganization, dynamic chromatin reconfiguration looks to facilitate profound and long-term hormonal actions. In this review, we focus the recent findings in gene regulation at a chromatin level, particularly of the function of enhancer RNAs transcribed from strong enhancers, and in the role of liquid-liquid phase separation state in transcription initiation through chromatin reconfiguration.
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Affiliation(s)
- Akira Hayakawa
- Graduate School of Life Science and Engineering, Iryo Sosei University, 5-5-1, Iino, Chuo-dai, Iwaki, Fukushima, 9708551, Japan
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
| | - Tomohiro Kurokawa
- Graduate School of Life Science and Engineering, Iryo Sosei University, 5-5-1, Iino, Chuo-dai, Iwaki, Fukushima, 9708551, Japan
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
- School of Medicine, Fukushima Medical University, Fukushima, Fukushima, 960-1295, Japan
| | - Yoshiaki Kanemoto
- Graduate School of Life Science and Engineering, Iryo Sosei University, 5-5-1, Iino, Chuo-dai, Iwaki, Fukushima, 9708551, Japan
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
| | - Takahiro Sawada
- Graduate School of Life Science and Engineering, Iryo Sosei University, 5-5-1, Iino, Chuo-dai, Iwaki, Fukushima, 9708551, Japan
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
| | - Jinichi Mori
- Graduate School of Life Science and Engineering, Iryo Sosei University, 5-5-1, Iino, Chuo-dai, Iwaki, Fukushima, 9708551, Japan
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan
- Department of Hematology, Jyoban Hospital, Tokiwa Foundation, Iwaki, Fukushima, Japan
- School of Medicine, Fukushima Medical University, Fukushima, Fukushima, 960-1295, Japan
| | - Shigeaki Kato
- Graduate School of Life Science and Engineering, Iryo Sosei University, 5-5-1, Iino, Chuo-dai, Iwaki, Fukushima, 9708551, Japan.
- Research Institute of Innovative Medicine, Tokiwa Foundation, Iwaki, Fukushima, Japan.
- School of Medicine, Fukushima Medical University, Fukushima, Fukushima, 960-1295, Japan.
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Tesei D, Jewczynko A, Lynch AM, Urbaniak C. Understanding the Complexities and Changes of the Astronaut Microbiome for Successful Long-Duration Space Missions. Life (Basel) 2022; 12:life12040495. [PMID: 35454986 PMCID: PMC9031868 DOI: 10.3390/life12040495] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/17/2022] [Accepted: 03/24/2022] [Indexed: 12/12/2022] Open
Abstract
During space missions, astronauts are faced with a variety of challenges that are unique to spaceflight and that have been known to cause physiological changes in humans over a period of time. Several of these changes occur at the microbiome level, a complex ensemble of microbial communities residing in various anatomic sites of the human body, with a pivotal role in regulating the health and behavior of the host. The microbiome is essential for day-to-day physiological activities, and alterations in microbiome composition and function have been linked to various human diseases. For these reasons, understanding the impact of spaceflight and space conditions on the microbiome of astronauts is important to assess significant health risks that can emerge during long-term missions and to develop countermeasures. Here, we review various conditions that are caused by long-term space exploration and discuss the role of the microbiome in promoting or ameliorating these conditions, as well as space-related factors that impact microbiome composition. The topics explored pertain to microgravity, radiation, immunity, bone health, cognitive function, gender differences and pharmacomicrobiomics. Connections are made between the trifecta of spaceflight, the host and the microbiome, and the significance of these interactions for successful long-term space missions.
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Affiliation(s)
- Donatella Tesei
- Department of Biotechnology, University of Natural Resources and Life Sciences, 1190 Vienna, Austria;
| | - Anna Jewczynko
- Department of Biology, University of Waterloo, Waterloo, ON N2L 3G1, Canada;
| | - Anne M. Lynch
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA;
- Graduate Program in Developmental Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Camilla Urbaniak
- ZIN Technologies Inc., Middleburg Heights, OH 44130, USA
- NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
- Correspondence:
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García-Rojas MD, Palma-Cordero G, Martínez-Ramírez CO, Ponce de León-Suárez V, Valdés-Flores M, Castro-Hernández C, Rubio-Lightbourn J, Hernández-Zamora E, Reyes-Maldonado E, Velázquez-Cruz R, Barredo-Prieto B, Casas-Avila L. Association of Polymorphisms in Estrogen Receptor Genes ( ESR1 and ESR2) with Osteoporosis and Fracture-Involvement of Comorbidities and Epistasis. DNA Cell Biol 2022; 41:437-446. [PMID: 35285722 DOI: 10.1089/dna.2021.1165] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Single-nucleotide polymorphisms (SNPs) in the ESR1/ESR2 genes play a role in osteoporosis (OP). Our objective was to determine associations of polymorphisms in ESR genes with OP and fracture, SNP-SNP interactions, and involvement of comorbidities. We analyzed 170 Mexican osteoporotic women (FNOP), 173 with hip fracture (HFx), and 210 controls. The SNPs, ESR1 rs2234693CC, rs851982CC and rs1999805AA, were associated with reduced OP risk (odds ratios [ORs] = 0.35, 0.40 and 0.32, respectively; p < 0.05); rs2234693CC was associated with reduced fracture risk (OR = 0.24; p < 0.05). The obese/overweight carriers of rs9340799GG had a lower OP (OR = 0.15, p = 0.016) and fracture (OR = 0.12, p = 0.0057) risk. The rs9479055AA and rs3020404AA hypertensive carriers had a higher OP risk (OR = 5.96, p = 0.032; and OR = 5.29, p = 0.02, respectively). In addition, rs3020404AA had a higher risk of fracture (OR = 4.90, p = 0.045). The rs2228480GG hypertensive carriers had a higher risk of fracture (OR = 6.22, p = 0.0038). We found a synergic relation between the ESR1 rs3020331 and rs1999805 in femoral neck OP and HFx. The rs2234693 (PvuII) and rs9340799 (XbaI) polymorphisms are associated with a high risk forming a haplotype. The epistasis analysis suggests the contribution of both genes (ESR1/ESR2) to the risk of OP and fracture. Epistasis and involvement of obesity and hypertension lead to a significant modification of the risk.
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Affiliation(s)
| | - Grecia Palma-Cordero
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | | | | | - Margarita Valdés-Flores
- Laboratorio de Medicina Genómica, Instituto Nacional de Rehabilitación, Ciudad de México, México
| | - Clementina Castro-Hernández
- Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Julieta Rubio-Lightbourn
- Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad de México, México
| | - Edgar Hernández-Zamora
- Laboratorio de Medicina Genómica, Instituto Nacional de Rehabilitación, Ciudad de México, México
| | - Elba Reyes-Maldonado
- Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Ciudad de México, México
| | - Rafael Velázquez-Cruz
- Laboratorio de Genómica del Metabolismo Óseo, Instituto Nacional de Medicina Genómica, Ciudad de México, México
| | - Blanca Barredo-Prieto
- Laboratorio de Medicina Genómica, Instituto Nacional de Rehabilitación, Ciudad de México, México
| | - Leonora Casas-Avila
- Laboratorio de Medicina Genómica, Instituto Nacional de Rehabilitación, Ciudad de México, México
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Niu Q, He J, Wu M, Liu J, Lu X, Zhang L, Jin Z. Transplantation of bone marrow mesenchymal stem cells and fibrin glue into extraction socket in maxilla promoted bone regeneration in osteoporosis rat. Life Sci 2022; 290:119480. [PMID: 33862113 DOI: 10.1016/j.lfs.2021.119480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 03/03/2021] [Accepted: 03/31/2021] [Indexed: 11/20/2022]
Abstract
AIMS Bone defect repair in osteoporosis remains a tremendous challenge for clinicians due to increased bone metabolism resulted from estrogen deficiency. This study aims to investigate the effect of bone marrow mesenchymal stem cells (BMSCs) combined with fibrin glue (FG) in the extraction socket healing process of osteoporosis rats, as well as estimate the role of estrogen receptors (ERs) played in BMSCs differentiation in vitro and in the alveolar bone reconstruction process in vivo. MAIN METHODS Forty rats were randomly divided into four groups, under general anesthesia, three groups underwent bilateral ovariectomy(OVX) and one group with the sham operation. Three months later, the osteogenic ability of BMSCs, isolated from healthy and osteoporosis rats, respectively, was tested. The ERα and ERβ mRNA expression in BMSCs was also evaluated by RT-PCR analysis. In vivo experiment, Micro-CT detection, histological and immunofluorescent analysis, tissue PCR was conducted up to 2, 4 and 6 weeks after transplantation of BMSCs/FG to assess the newly formed bone in the extraction socket. KEY FINDINGS The BMSCs from osteoporosis rats displayed weaker osteogenic potential and lower ERs expression compared with the BMSCs from healthy rats. Newly formed bone tissue filled the socket defect in BMSCs/FG treated VOX rats after six weeks, which was comparable to the sham group, while reduced ERs expression was found in the regenerated bone of the OVX group. SIGNIFICANCE The BMSCs seeded within FG might provide an alternative therapeutic method for repairing the extraction socket defect in osteoporosis condition.
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Affiliation(s)
- Qiannan Niu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University, Xi'an, People's Republic of China; Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Jiaojiao He
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University, Xi'an, People's Republic of China; Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Minke Wu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University, Xi'an, People's Republic of China; Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Jia Liu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University, Xi'an, People's Republic of China; Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Xiaolin Lu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University, Xi'an, People's Republic of China; Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, People's Republic of China
| | - Liang Zhang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University, Xi'an, People's Republic of China; Department of Stomatology, The Air Force 986 Hospital, Xi'an, People's Republic of China.
| | - Zuolin Jin
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Fourth Military Medical University, Xi'an, People's Republic of China; Department of Orthodontics, School of Stomatology, Fourth Military Medical University, Xi'an, People's Republic of China.
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Richardson KK, Ling W, Krager K, Fu Q, Byrum SD, Pathak R, Aykin-Burns N, Kim HN. Ionizing Radiation Activates Mitochondrial Function in Osteoclasts and Causes Bone Loss in Young Adult Male Mice. Int J Mol Sci 2022; 23:675. [PMID: 35054859 PMCID: PMC8775597 DOI: 10.3390/ijms23020675] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/03/2022] [Accepted: 01/07/2022] [Indexed: 12/13/2022] Open
Abstract
The damaging effects of ionizing radiation (IR) on bone mass are well-documented in mice and humans and are most likely due to increased osteoclast number and function. However, the mechanisms leading to inappropriate increases in osteoclastic bone resorption are only partially understood. Here, we show that exposure to multiple fractions of low-doses (10 fractions of 0.4 Gy total body irradiation [TBI]/week, i.e., fractionated exposure) and/or a single exposure to the same total dose of 4 Gy TBI causes a decrease in trabecular, but not cortical, bone mass in young adult male mice. This damaging effect was associated with highly activated bone resorption. Both osteoclast differentiation and maturation increased in cultures of bone marrow-derived macrophages from mice exposed to either fractionated or singular TBI. IR also increased the expression and enzymatic activity of mitochondrial deacetylase Sirtuin-3 (Sirt3)-an essential protein for osteoclast mitochondrial activity and bone resorption in the development of osteoporosis. Osteoclast progenitors lacking Sirt3 exposed to IR exhibited impaired resorptive activity. Taken together, targeting impairment of osteoclast mitochondrial activity could be a novel therapeutic strategy for IR-induced bone loss, and Sirt3 is likely a major mediator of this effect.
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Affiliation(s)
- Kimberly K. Richardson
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Division of Endocrinology and Metabolism, Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.K.R.); (W.L.); (Q.F.)
| | - Wen Ling
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Division of Endocrinology and Metabolism, Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.K.R.); (W.L.); (Q.F.)
| | - Kimberly Krager
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.K.); (R.P.); (N.A.-B.)
| | - Qiang Fu
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Division of Endocrinology and Metabolism, Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.K.R.); (W.L.); (Q.F.)
| | - Stephanie D. Byrum
- Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA;
| | - Rupak Pathak
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.K.); (R.P.); (N.A.-B.)
| | - Nukhet Aykin-Burns
- Division of Radiation Health, Department of Pharmaceutical Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.K.); (R.P.); (N.A.-B.)
| | - Ha-Neui Kim
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Division of Endocrinology and Metabolism, Department of Internal Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (K.K.R.); (W.L.); (Q.F.)
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Artsi H, Cohen-Kfir E, Shahar R, Kalish-Achrai N, Lishinsky N, Dresner-Pollak R. SIRT1 haplo-insufficiency results in reduced cortical bone thickness, increased porosity and decreased estrogen receptor alpha in bone in adult 129/Sv female mice. Front Endocrinol (Lausanne) 2022; 13:1032262. [PMID: 36568088 PMCID: PMC9768543 DOI: 10.3389/fendo.2022.1032262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 11/15/2022] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Sirtuin 1 (SIRT1) is a key player in aging and metabolism and regulates bone mass and architecture. Sexual dimorphism in skeletal effects of SIRT1 has been reported, with an unfavorable phenotype primarily in female mice. METHODS To investigate the mechanisms of gender differences in SIRT1 skeletal effect, we investigated femoral and vertebral cortical and cancellous bone in global Sirt1 haplo-insufficient 129/Sv mice aged 2,7,12 months lacking Sirt1 exons 5,6,7 (Sirt1+/Δ ) and their wild type (WT) counterparts. RESULTS In females, femoral bone mineral content, peak cortical thickness, and trabecular bone volume (BV/TV%), number and thickness were significantly lower in Sirt1+/Δ compared to WT mice. Increased femoral cortical porosity was observed in 7-month-old Sirt1+/Δ compared to WT female mice, accompanied by reduced biomechanical strength. No difference in vertebral indices was detected between Sirt1+/Δ and WT female mice. SIRT1 decreased with aging in WT female mice and was lower in vertebrae and femur in 18- and 30- versus 3-month-old 129/Sv and C57BL/6J female mice, respectively. Decreased bone estrogen receptor alpha (ERα) was observed in Sirt1+/Δ compared to WT female mice and was significantly higher in Sirt1 over-expressing C3HT101/2 murine mesenchymal stem cells. In males no difference in femoral indices was detected in Sirt1+/Δ versus WT mice, however vertebral BV/TV%, trabecular number and thickness were higher in Sirt1+/Δ vs. WT mice. No difference in androgen receptor (AR) was detected in bone in Sirt1+/Δ vs. WT male mice. Bone SIRT1 was significantly lower in male compared to female WT mice, suggesting that SIRT1 maybe more significant in female than male skeleton. DISCUSSION These findings demonstrate that 50% reduction in SIRT1 is sufficient to induce the hallmarks of skeletal aging namely, decreased cortical thickness and increased porosity in female mice, highlighting the role of SIRT1 as a regulator of cortical bone quantity and quality. The effects of SIRT1 in cortical bone are likely mediated in part by its regulation of ERα. The age-associated decline in bone SIRT1 positions SIRT1 as a potential therapeutic target to ameliorate age-related cortical bone deterioration in females. The crosstalk between ERα, AR and SIRT1 in the bone microenvironment remains to be further investigated.
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Affiliation(s)
- Hanna Artsi
- Department of Endocrinology and Metabolism, Division of Medicine, Hadassah Medical Organization, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Einav Cohen-Kfir
- Department of Endocrinology and Metabolism, Division of Medicine, Hadassah Medical Organization, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Ron Shahar
- Laboratory of Bone Biomechanics, Koret School of Veterinary Medicine, Faculty of Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
| | - Noga Kalish-Achrai
- Laboratory of Bone Biomechanics, Koret School of Veterinary Medicine, Faculty of Agriculture, Hebrew University of Jerusalem, Rehovot, Israel
| | - Natan Lishinsky
- Department of Endocrinology and Metabolism, Division of Medicine, Hadassah Medical Organization, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Rivka Dresner-Pollak
- Department of Endocrinology and Metabolism, Division of Medicine, Hadassah Medical Organization, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- *Correspondence: Rivka Dresner-Pollak,
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Sun Y, Li J, Xie X, Gu F, Sui Z, Zhang K, Yu T. Recent Advances in Osteoclast Biological Behavior. Front Cell Dev Biol 2021; 9:788680. [PMID: 34957116 PMCID: PMC8694526 DOI: 10.3389/fcell.2021.788680] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/15/2021] [Indexed: 12/19/2022] Open
Abstract
With the progress of the aging population, bone-related diseases such as osteoporosis and osteoarthritis have become urgent problems. Recent studies have demonstrated the importance of osteoclasts in bone homeostasis, implying these will be an important mediator in the treatment of bone-related diseases. Up to now, several reviews have been performed on part of osteoclast biological behaviors such as differentiation, function, or apoptosis. However, few reviews have shown the complete osteoclast biology and research advances in recent years. Therefore, in this review, we focus on the origin, differentiation, apoptosis, behavior changes and coupling signals with osteoblasts, providing a simple but comprehensive overview of osteoclasts for subsequent studies.
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Affiliation(s)
- Yang Sun
- Department of Orthopedics, The First Hospital of Jilin University, Changchun, China
| | - Jiangbi Li
- Department of Orthopedics, The First Hospital of Jilin University, Changchun, China
| | - Xiaoping Xie
- Department of Orthopedics, The First Hospital of Jilin University, Changchun, China
| | - Feng Gu
- Department of Orthopedics, The First Hospital of Jilin University, Changchun, China
| | - Zhenjiang Sui
- Department of Orthopedics, The First Hospital of Jilin University, Changchun, China
| | - Ke Zhang
- Department of Orthopedics, The First Hospital of Jilin University, Changchun, China
| | - Tiecheng Yu
- Department of Orthopedics, The First Hospital of Jilin University, Changchun, China
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Yu J, Schilling L, Eller T, Canalis E. Hairy and enhancer of split 1 is a primary effector of NOTCH2 signaling and induces osteoclast differentiation and function. J Biol Chem 2021; 297:101376. [PMID: 34742737 PMCID: PMC8633688 DOI: 10.1016/j.jbc.2021.101376] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 12/12/2022] Open
Abstract
Notch2tm1.1Ecan mice, which harbor a mutation replicating that found in Hajdu–Cheney syndrome, exhibit marked osteopenia because of increased osteoclast number and bone resorption. Hairy and enhancer of split 1 (HES1) is a Notch target gene and a transcriptional modulator that determines osteoclast cell fate decisions. Transcript levels of Hes1 increase in Notch2tm1.1Ecan bone marrow–derived macrophages (BMMs) as they mature into osteoclasts, suggesting a role in osteoclastogenesis. To determine whether HES1 is responsible for the phenotype of Notch2tm1.1Ecan mice and the skeletal manifestations of Hajdu–Cheney syndrome, Hes1 was inactivated in Ctsk-expressing cells from Notch2tm1.1Ecan mice. Ctsk encodes the protease cathepsin K, which is expressed preferentially by osteoclasts. We found that the osteopenia of Notch2tm1.1Ecan mice was ameliorated, and the enhanced osteoclastogenesis was reversed in the context of the Hes1 inactivation. Microcomputed tomography revealed that the downregulation of Hes1 in Ctsk-expressing cells led to increased bone volume/total volume in female mice. In addition, cultures of BMMs from CtskCre/WT;Hes1Δ/Δ mice displayed a decrease in osteoclast number and size and decreased bone-resorbing capacity. Moreover, activation of HES1 in Ctsk-expressing cells led to osteopenia and enhanced osteoclast number, size, and bone resorptive capacity in BMM cultures. Osteoclast phenotypes and RNA-Seq of cells in which HES1 was activated revealed that HES1 modulates cell–cell fusion and bone-resorbing capacity by supporting sealing zone formation. In conclusion, we demonstrate that HES1 is mechanistically relevant to the skeletal manifestation of Notch2tm1.1Ecan mice and is a novel determinant of osteoclast differentiation and function.
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Affiliation(s)
- Jungeun Yu
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut, USA; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, USA
| | - Lauren Schilling
- UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, USA
| | - Tabitha Eller
- UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, USA
| | - Ernesto Canalis
- Department of Orthopaedic Surgery, UConn Health, Farmington, Connecticut, USA; UConn Musculoskeletal Institute, UConn Health, Farmington, Connecticut, USA; Department of Medicine, UConn Health, Farmington, Connecticut, USA.
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Kim HN, Richardson KK, Krager KJ, Ling W, Simmons P, Allen AR, Aykin-Burns N. Simulated Galactic Cosmic Rays Modify Mitochondrial Metabolism in Osteoclasts, Increase Osteoclastogenesis and Cause Trabecular Bone Loss in Mice. Int J Mol Sci 2021; 22:11711. [PMID: 34769141 PMCID: PMC8583929 DOI: 10.3390/ijms222111711] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 11/24/2022] Open
Abstract
Space is a high-stress environment. One major risk factor for the astronauts when they leave the Earth's magnetic field is exposure to ionizing radiation from galactic cosmic rays (GCR). Several adverse changes occur in mammalian anatomy and physiology in space, including bone loss. In this study, we assessed the effects of simplified GCR exposure on skeletal health in vivo. Three months following exposure to 0.5 Gy total body simulated GCR, blood, bone marrow and tissue were collected from 9 months old male mice. The key findings from our cell and tissue analysis are (1) GCR induced femoral trabecular bone loss in adult mice but had no effect on spinal trabecular bone. (2) GCR increased circulating osteoclast differentiation markers and osteoclast formation but did not alter new bone formation or osteoblast differentiation. (3) Steady-state levels of mitochondrial reactive oxygen species, mitochondrial and non-mitochondrial respiration were increased without any changes in mitochondrial mass in pre-osteoclasts after GCR exposure. (4) Alterations in substrate utilization following GCR exposure in pre-osteoclasts suggested a metabolic rewiring of mitochondria. Taken together, targeting radiation-mediated mitochondrial metabolic reprogramming of osteoclasts could be speculated as a viable therapeutic strategy for space travel induced bone loss.
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Affiliation(s)
- Ha-Neui Kim
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Department of Internal Medicine, Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.K.R.); (W.L.)
| | - Kimberly K. Richardson
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Department of Internal Medicine, Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.K.R.); (W.L.)
| | - Kimberly J. Krager
- Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.J.K.); (P.S.); (A.R.A.)
| | - Wen Ling
- Center for Musculoskeletal Disease Research and Center for Osteoporosis and Metabolic Bone Diseases, Department of Internal Medicine, Division of Endocrinology and Metabolism, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.K.R.); (W.L.)
| | - Pilar Simmons
- Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.J.K.); (P.S.); (A.R.A.)
| | - Antino R. Allen
- Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.J.K.); (P.S.); (A.R.A.)
| | - Nukhet Aykin-Burns
- Department of Pharmaceutical Sciences, Division of Radiation Health, University of Arkansas for Medical Sciences, 4301 W. Markham Street, Little Rock, AR 72205, USA; (K.J.K.); (P.S.); (A.R.A.)
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