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Chen Z, Zhao Q, Chen L, Gao S, Meng L, Liu Y, Wang Y, Li T, Xue J. MAGP2 promotes osteogenic differentiation during fracture healing through its crosstalk with the β-catenin pathway. J Cell Physiol 2024; 239:e31183. [PMID: 38348695 DOI: 10.1002/jcp.31183] [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: 10/12/2023] [Revised: 12/06/2023] [Accepted: 12/12/2023] [Indexed: 04/12/2024]
Abstract
Osteogenic differentiation is important for fracture healing. Microfibrial-associated glycoprotein 2 (MAGP2) is found to function as a proangiogenic regulator in bone formation; however, its role in osteogenic differentiation during bone repair is not clear. Here, a mouse model of critical-sized femur fracture was constructed, and the adenovirus expressing MAGP2 was delivered into the fracture site. Mice with MAGP2 overexpression exhibited increased bone mineral density and bone volume fraction (BV/TV) at Day 14 postfracture. Within 7 days postfracture, overexpression of MAGP2 increased collagen I and II expression at the fracture callus, with increasing chondrogenesis. MAGP2 inhibited collagen II level but elevated collagen I by 14 days following fracture, accompanied by increased endochondral bone formation. In mouse osteoblast precursor MC3T3-E1 cells, MAGP2 treatment elevated the expression of osteoblastic factors (osterix, BGLAP and collagen I) and enhanced ALP activity and mineralization through activating β-catenin signaling after osteogenic induction. Besides, MAGP2 could interact with lipoprotein receptor-related protein 5 (LRP5) and upregulated its expression. Promotion of osteogenic differentiation and β-catenin activation mediated by MAGP2 was partially reversed by LRP5 knockdown. Interestingly, β-catenin/transcription factor 4 (TCF4) increased MAGP2 expression probably by binding to MAGP2 promoter. These findings suggest that MAGP2 may interact with β-catenin/TCF4 to enhance β-catenin/TCF4's function and activate LRP5-activated β-catenin signaling pathway, thus promoting osteogenic differentiation for fracture repair. mRNA sequencing identified the potential targets of MAGP2, providing novel insights into MAGP2 function and the directions for future research.
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Affiliation(s)
- Zhiguang Chen
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Qi Zhao
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Lianghong Chen
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Songlan Gao
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Lingshuai Meng
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yingjie Liu
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yu Wang
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Tiegang Li
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Jinqi Xue
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
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Li J, Liu Z, Ren Y, Shao H, Li S. LRP5-/6 gene polymorphisms and its association with risk of abnormal bone mass in postmenopausal women. J Orthop Surg Res 2023; 18:369. [PMID: 37202775 DOI: 10.1186/s13018-023-03829-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/04/2023] [Indexed: 05/20/2023] Open
Abstract
OBJECTIVES To assess LRP5-/6 gene polymorphisms and its association with risk of abnormal bone mass (ABM) in postmenopausal women. METHODS The study recruited 166 patients with ABM (case group) and 106 patients with normal bone mass (control group) based on bone mineral density (BMD) results. Multi-factor dimensionality reduction (MDR) was used to analyze the interaction between the Low-density lipoprotein receptor-related protein 5 (LRP5) gene (rs41494349, rs2306862) and the Low-density lipoprotein receptor-related protein 6 (LRP6) gene (rs10743980, rs2302685) and the subjects' clinical characteristics of age and menopausal years. RESULTS (1) Logistic regression analysis showed that the subjects with the CT or TT genotype at rs2306862 had a higher risk of ABM than those with the CC genotype (OR = 2.353, 95%CI = 1.039-6.186; OR = 2.434, 95%CI = 1.071, 5.531; P < 0.05). The subjects with the TC genotype at rs2302685 had a higher risk of ABM than those with the TT genotype (OR = 2.951, 95%CI = 1.030-8.457, P < 0.05). (2) When taking the three Single-nucleotide polymorphisms (SNPs) together, the accuracy was the highest with the cross-validation consistency of 10/10 (OR = 1.504, 95%CI:1.092-2.073, P < 0.05), indicating that the LRP5 rs41494349 and LRP6 rs10743980, rs2302685 were interactively associated with the risk of ABM. (3) Linkage disequilibrium (LD) results revealed that the LRP5 (rs41494349,rs2306862) were in strong LD (D' > 0.9, r2 > 0.3). AC and AT haplotypes were significantly more frequently distributed in the ABM group than in the control group, indicating that subjects carrying the AC and AT haplotypes were associated with an increased risk of ABM (P < 0.01). (4) MDR showed that rs41494349 & rs2302685 & rs10743980 & age were the best model for ABM prediction. The risk of ABM in "high-risk combination" was 1.00 times that of "low-risk combination"(OR = 1.005, 95%CI: 1.002-1.008, P < 0.05). (5) MDR showed that there was no significant association between any of the SNPs and menopausal years and ABM susceptibility. CONCLUSION These findings indicate that LRP5-rs2306862 and LRP6-rs2302685 polymorphisms and gene-gene and gene-age interactions may increase the risk of ABM in postmenopausal women. There was no significant association between any of the SNPs and menopausal years and ABM susceptibility.
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Affiliation(s)
- Jun Li
- The First Affiliated Hospital of Shihezi University, 107 North Second Road, Hongshan Sub-District, Shihezi City, 832000, Xinjiang Uygur Autonomous Region, People's Republic of China.
| | - Zebing Liu
- The First Affiliated Hospital of Shihezi University, 107 North Second Road, Hongshan Sub-District, Shihezi City, 832000, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Yanxia Ren
- The First Affiliated Hospital of Shihezi University, 107 North Second Road, Hongshan Sub-District, Shihezi City, 832000, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Han Shao
- School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang Uygur Autonomous Region, People's Republic of China
| | - Siyuan Li
- School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang Uygur Autonomous Region, People's Republic of China
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A critical review of datasets and computational suites for improving cancer theranostics and biomarker discovery. MEDICAL ONCOLOGY (NORTHWOOD, LONDON, ENGLAND) 2022; 39:206. [PMID: 36175717 DOI: 10.1007/s12032-022-01815-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 07/29/2022] [Indexed: 10/14/2022]
Abstract
Cancer has been constantly evolving and so is the research pertaining to cancer diagnosis and therapeutic regimens. Early detection and specific therapeutics are the key features of modern cancer therapy. These requirements can only be fulfilled with the integration of diverse high-throughput technologies. Integration of advanced omics methodology involving genomics, epigenomics, proteomics, and transcriptomics provide a clear understanding of multi-faceted cancer. In the past few years, tremendous high-throughput data have been generated from cancer genomics and epigenomic analyses, which on further methodological analyses can yield better biological insights. The major epigenetic alterations reported in cancer are DNA methylation levels, histone post-translational modifications, and epi-miRNA regulating the oncogenes and tumor suppressor genes. While the genomic analyses like gene expression profiling, cancer gene prediction, and genome annotation divulge the genetic alterations in oncogenes or tumor suppressor genes. Also, systems biology approach using biological networks is being extensively used to identify novel cancer biomarkers. Therefore, integration of these multi-dimensional approaches will help to identify potential diagnostic and therapeutic biomarkers. Here, we reviewed the critical databases and tools dedicated to various epigenomic and genomic alterations in cancer. The review further focuses on the multi-omics resources available for further validating the identified cancer biomarkers. We also highlighted the tools for cancer biomarker discovery using a systems biology approach utilizing genomic and epigenomic data. Biomarkers predicted using such integrative approaches are shown to be more clinically relevant.
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Song S, Guo Y, Yang Y, Fu D. Advances in pathogenesis and therapeutic strategies for osteoporosis. Pharmacol Ther 2022; 237:108168. [PMID: 35283172 DOI: 10.1016/j.pharmthera.2022.108168] [Citation(s) in RCA: 126] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/25/2022] [Accepted: 03/07/2022] [Indexed: 02/07/2023]
Abstract
Osteoporosis, is the most common bone disorder worldwide characterized by low bone mineral density, leaving affected bones vulnerable to fracture. Bone homeostasis depends on the precise balance between bone resorption by osteoclasts and bone matrix formation by mesenchymal lineage osteoblasts, and involves a series of complex and highly regulated steps. Bone homeostasis will be disrupted when the speed of bone resorption is faster than bone formation. Based on various regulatory mechanisms of bone homeostasis, a series of drugs targeting osteoporosis have emerged in clinical practice, including bisphosphonates, selective estrogen receptor modulators, calcitonin, molecular-targeted drugs and so on. However, many drugs have major adverse effects or are unsuitable for long-term use. Therefore, it is very urgent to find more effective therapeutic drugs based on the new pathogenesis of osteoporosis. In this review, we summarize novel mechanisms involved in the pathological process of osteoporosis, including the roles of gut microbiome, autophagy, iron balance and cellular senescence. Based on the above pathological mechanism, we found promising drugs for osteoporosis treatment, such as: probiotics, alpha-ketoglutarate, senolytics and hydrogen sulfide. This new finding may provide an important basis for elucidating the complex pathological mechanisms of osteoporosis and provide promising drugs for clinical osteoporosis treatment.
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Affiliation(s)
- Shasha Song
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, PR China
| | - Yuanyuan Guo
- Department of Pharmacy, Liyuan Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, Hubei 430077, PR China
| | - Yuehua Yang
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, PR China
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, PR China.
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Whole Genome Sequencing Unravels New Genetic Determinants of Early-Onset Familial Osteoporosis and Low BMD in Malta. Genes (Basel) 2022; 13:genes13020204. [PMID: 35205249 PMCID: PMC8871631 DOI: 10.3390/genes13020204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 11/19/2022] Open
Abstract
Background: Osteoporosis is a skeletal disease with a strong genetic background. The study aimed to identify the genetic determinants of early-onset familial osteoporosis and low bone mineral density (BMD) in a two-generation Maltese family. Methods: Fifteen relatives aged between 28–74 years were recruited. Whole genome sequencing was conducted on 12 relatives and shortlisted variants were genotyped in the Malta Osteoporotic Fracture Study (MOFS) for replication. Results: Sequential variant filtering following a dominant inheritance pattern identified rare missense variants within SELP, TGF-β2 and ADAMTS20, all of which were predicted to be likely pathogenic and participate in osteoimmunology. TGF-β2 c.1136C>T was identified in five individuals from the MOFS in heterozygosity, four of whom had osteopenia/osteoporosis at the lumbar spine and hip, and/or had sustained a low-trauma fracture. Heterozygosity for the ADAMTS20 c.4090A>T was accompanied by lower total hip BMD (p = 0.018) and lower total serum calcium levels in MOFS (p < 0.01), recapitulating the findings from the family. Women carrying at least one copy of the alternative allele (TC/CC) for SELP c.2177T>C exhibited a tendency for lower lumbar spine BMD and/or wrist fracture history relative to women with TT genotype. Conclusions: Our findings suggest that the identified variants, alone or in combination, could be causal factors of familial osteoporosis and low BMD, requiring replication in larger collections.
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Analysis of Molecular Mechanism of Erxian Decoction in Treating Osteoporosis Based on Formula Optimization Model. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:6641838. [PMID: 34239693 PMCID: PMC8238601 DOI: 10.1155/2021/6641838] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 03/05/2021] [Accepted: 04/07/2021] [Indexed: 12/21/2022]
Abstract
Osteoporosis (OP) is a highly prevalent orthopedic condition in postmenopausal women and the elderly. Currently, OP treatments mainly include bisphosphonates, receptor activator of nuclear factor kappa-B ligand (RANKL) antibody therapy, selective estrogen receptor modulators, teriparatide (PTH1-34), and menopausal hormone therapy. However, increasing evidence has indicated these treatments may exert serious side effects. In recent years, Traditional Chinese Medicine (TCM) has become popular for treating orthopedic disorders. Erxian Decoction (EXD) is widely used for the clinical treatment of OP, but its underlying molecular mechanisms are unclear thanks to its multiple components and multiple target features. In this research, we designed a network pharmacology method, which used a novel node importance calculation model to identify critical response networks (CRNs) and effective proteins. Based on these proteins, a target coverage contribution (TCC) model was designed to infer a core active component group (CACG). This approach decoded the mechanisms underpinning EXD's role in OP therapy. Our data indicated that the drug response network mediated by the CACG effectively retained information of the component-target (C-T) network of pathogenic genes. Functional pathway enrichment analysis showed that EXD exerted therapeutic effects toward OP by targeting PI3K-Akt signaling (hsa04151), calcium signaling (hsa04020), apoptosis (hsa04210), estrogen signaling (hsa04915), and osteoclast differentiation (hsa04380) via JNK, AKT, and ERK. Our method furnishes a feasible methodological strategy for formula optimization and mechanism analysis and also supplies a reference scheme for the secondary development of the TCM formula.
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Güemes-Villahoz N, Acón D, Hamichi SE, Tanenbaum R, Berrocal AM. Serpiginous Intraretinal Lesions Associated With Familial Exudative Vitreoretinopathy. Ophthalmic Surg Lasers Imaging Retina 2021; 52:155-159. [PMID: 34038691 DOI: 10.3928/23258160-20210302-07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Familial exudative vitreoretinopathy (FEVR) is a rare inherited disorder affecting retinal angiogenesis that may present with a wide range of phenotypic characteristics. In this report, the authors describe an atypical presentation of FEVR in a healthy 9-year-old male with progressive decreased visual acuity in the left eye. Fundus examination showed an avascular retina in the temporal periphery bilaterally. The left eye also revealed serpiginous hypopigmented lesions in the superior quadrant, which showed intraretinal location on optical coherence tomography and hyperautofluorescence. Genetic testing revealed LRP5 mutation, confirming a diagnosis of FEVR. The serpiginous lesions represent an unusual finding associated with FEVR not previously described in the literature. [Ophthalmic Surg Lasers Imaging Retina. 2021;52:155-159.].
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Li J, Li S, Zhao H, Li J, Wang S, Shi Y. A Study of the Relationship between the Polymorphism and Mutation of rs682429 and rs3781590 in the LRP5 Gene and Bone Metabolism in Postmenopausal Type 2 Diabetic Women in Xinjiang. J Diabetes Res 2020; 2020:3071217. [PMID: 32405501 PMCID: PMC7204136 DOI: 10.1155/2020/3071217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 04/17/2020] [Indexed: 12/03/2022] Open
Abstract
OBJECTIVE To explore the expression of the polymorphism and mutation of rs682429 and rs3781590 in the low-density lipoprotein receptor-related protein 5 (LRP5) genotype and to analyse the relationship of bone mineral density (BMD) and bone metabolism markers in postmenopausal women with type-2 diabetes mellitus (T2DM) in Xinjiang, China, to provide a basis for prevention and treatment of the disease. METHODS A total of 136 postmenopausal women were included in the study. According to the results of an oral glucose tolerance test (OGTT) and dual-energy X-ray (DEXA) determination of BMD, the study subjects were divided into 4 groups: group A: normal OGTT+normal bone mass group; group B: normal OGTT+osteoporotic (OP) group; group C: T2DM+normal bone mass group; group D: T2DM+osteoporotic (OP) group. Calcium (Ca), phosphorus (P), alkaline phosphatase (ALP), and clinical biochemical data were determined; haemoglobin A1c (HbA1c) was measured by HPLC; BMD of the femoral neck, hip, and lumbar spine (L1-4) was measured by dual-energy X-ray (DEXA); and the rs682429 and rs3781590 polymorphisms of the LRP5 gene were detected by time-of-flight mass spectrometry (TOF MS). RESULTS (1) The rs682429 polymorphism of the LRP5 genotype distribution was statistically significant (P < 0.05) in group B compared with group A. (2) The triglycerides (TG) of women with the CT/TT genotype (mutant type) were higher than those of women with the CC genotype (wild type) (2.37 ± 1.30 vs. 1.52 ± 0.83, P < 0.05) at the rs3781590 site of the LRP5 gene in group D. (3) Multiple linear regression analysis showed that TG (β = 0.034, P < 0.05) and body mass index (BMI) (β = 0.013, P < 0.05) were the influencing factors of BMD (L1-4) in T2DM patients. TG (β = 0.022, P < 0.05), BMI (β = 0.009, P < 0.05), and duration of menopause (β = 0.005, P < 0.05) were the influencing factors of BMD (hip). CONCLUSION (1) The rs682429 polymorphism site in the LRP5 gene may be involved in bone metabolism in postmenopausal women from Xinjiang. (2) The rs3781590 mutation in the LRP5 gene from these subjects may be involved in lipid metabolism. (3) Among postmenopausal women with type 2 diabetes mellitus and bone mass abnormality in the Xinjiang Shihezi area, high BMI and TG are protective factors against increased BMD. Duration of menopause is a risk factor for increased BMD.
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Affiliation(s)
- Jun Li
- Department of Endocrinology and Metabolism, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832002, China
| | - SiYuan Li
- Medical College, Shihezi University, Shihezi 832002, China
| | - HuiRong Zhao
- Department of Endocrinology and Metabolism, The First Affiliated Hospital, Shihezi University School of Medicine, Shihezi, Xinjiang 832002, China
| | - JiaJia Li
- Department of Endocrinology and Metabolism, The Second People's Hospital of Nanyang, Nanyang, Henan 473000, China
| | - Shuang Wang
- Department of Endocrinology and Metabolism, The Central Hospital of Yangpu District in Shanghai, Shanghai 200000, China
| | - YanQiu Shi
- Department of Cardiovascular Medicine, Xiaoshan Hospital of Hangzhou in Zhejiang, Hangzhou, Zhejiang 310000, China
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Wang QF, Bi HS, Qin ZL, Wang P, Nie FF, Zhang GW. Associations of LRP5 Gene With Bone Mineral Density, Bone Turnover Markers, and Fractures in the Elderly With Osteoporosis. Front Endocrinol (Lausanne) 2020; 11:571549. [PMID: 33101205 PMCID: PMC7545741 DOI: 10.3389/fendo.2020.571549] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 08/20/2020] [Indexed: 12/06/2022] Open
Abstract
Objective: The study aimed to explore the associations of rs4988300 and rs634008 in the low-density lipoprotein receptor-related protein 5 (LRP5) gene with bone mineral density (BMD), bone turnover markers (BTM), and fractures in elderly patients with osteoporosis (OP). Methods: Our study included 328 unrelated OP patients with or without fractures. Genomic DNA was extracted for genotyping. BTM levels were assessed by electrochemiluminescence (ECL). Dual-energy X-ray absorptiometry (DXA) was employed to measure BMD in the lumbar spine (LS) and proximal femur. Basic features between the OP and fracture groups were analyzed using the t-test. The Chi-square test was performed to analyze the differences in allele and genotype frequencies. The associations of single-nucleotide polymorphisms (SNPs) with BMD and BTM in the subgroups were investigated by the analysis of covariance (ANCOVA) adjusted for confounding factors. Results: In both females and males, individuals with fractures exhibited higher BTM levels and lower BMD values than those with OP (P < 0.05). The allele and genotype frequencies of rs4988300 in the subgroups were significantly different (P < 0.05). In both females and males suffering from OP, participants with rs4988300 GG or rs634008 TT presented lower procollagen I N-terminal propeptide (PINP) levels (P < 0.05). Women with OP carrying rs4988300 GG exhibited lower BMD values at FN and TH (P < 0.05). In both females and males with fractures, individuals carrying rs4988300 GG genotype or rs634008 TT genotype exhibited lower PINP levels and BMD values at FN and TH than those with other genotypes (P < 0.05). Conclusions: Rs4988300 and rs634008 polymorphisms in the LRP5 gene are associated with bone phenotypes in the elderly with OP or fractures.
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Affiliation(s)
- Qi-Fei Wang
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Hong-Sen Bi
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Ze-Lian Qin
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
- *Correspondence: Ze-Lian Qin
| | - Pu Wang
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Fang-Fei Nie
- Department of Plastic Surgery, Peking University Third Hospital, Beijing, China
| | - Guang-Wu Zhang
- Department of Orthopedics, Peking University Shougang Hospital, Beijing, China
- Guang-Wu Zhang
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Mechanisms of Zuogui Pill in Treating Osteoporosis: Perspective from Bone Marrow Mesenchymal Stem Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 2018:3717391. [PMID: 30327678 PMCID: PMC6169217 DOI: 10.1155/2018/3717391] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 09/04/2018] [Indexed: 01/08/2023]
Abstract
The current treatment strategies for osteoporosis (OP) involve promoting osteogenic differentiation and inhibiting adipogenic differentiation of bone marrow mesenchymal stem cells (BMSCs). According to a theory of traditional Chinese medicine (TCM), the kidneys contain an “essence” that regulate bone metabolism and generate marrow. Kidney disorders are therefore considered to be a major cause of OP as per the principles of TCM, which recommends kidney-tonifying treatments for OP. The Zuogui pill (ZGP) is a classic kidney-tonifying medication that effectively improves OP symptoms. Studies have shown that ZGP can promote the osteogenic differentiation of BMSCs, providing scientific evidence for the TCM theory linking kidneys with bone metabolism. In this review, we have provided an overview of recent studies that examined the underlying mechanisms of ZGP mediated regulation of BMSC osteogenic and adipogenic differentiation.
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Souza KSCD, Ururahy MAG, Oliveira YMDC, Loureiro MB, Silva HPVD, Bortolin RH, Luchessi AD, Arrais RF, Hirata RDC, Almeida MDG, Hirata MH, Rezende AAD. The low-density lipoprotein receptor-related protein 5 (LRP5) 4037C>T polymorphism: candidate for susceptibility to type 1 diabetes mellitus. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2018; 62:480-484. [PMID: 30304114 PMCID: PMC10118729 DOI: 10.20945/2359-3997000000057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 05/09/2018] [Indexed: 04/22/2023]
Abstract
OBJECTIVE The present study has investigated the association between low-density lipoprotein receptor-related protein 5 (LRP5) 4037C>T polymorphism and type 1 diabetes mellitus (T1DM) susceptibility in a Brazilian population. SUBJECTS AND METHODS A total number of 134 T1DM patients and 180 normoglycemic individuals (NG) aged 6-20 years were studied. Glycated hemoglobin and glucose levels were determined. Genotyping of LRP5 4037C>T (rs3736228) was performed. RESULTS T1DM patients showed poor glycemic control. Genotypes in the codominant (CT: OR = 2.99 [CI 95%: 1.71-5.24], p < 0.001; TT: OR = 5.34 [CI 95%: 1.05-2702], p < 0.001), dominant (CT + TT: OR = 3.16 [CI 95%: 1.84-5.43], p < 0.001) and log-additive (OR = 2.78 [CI 95%: 1.70-4.52], p < 0.001) models, and LRP5 4037T allele (OR = 2.88, [CI 95%: 1.78-4.77], p < 0.001) were associated with an increased risk of developing T1DM. LRP5 4037CT and CT+TT carriers in T1DM group showed higher concentrations of serum glucose and glycated hemoglobin when compared with CC carriers. CONCLUSION The LRP5 4037C>T may represent a candidate for T1DM susceptibility, as well as poor glycemic control.
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Affiliation(s)
- Karla Simone Costa de Souza
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brasil
| | - Marcela Abbott Galvão Ururahy
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brasil
| | - Yonara Monique da Costa Oliveira
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brasil
- Centro de Educação e Saúde, Universidade Federal de Campina Grande (UFCG), Cuité, PB, Brasil
| | - Melina Bezerra Loureiro
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brasil
| | | | - Raul Hernandes Bortolin
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brasil
| | - André Ducati Luchessi
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brasil
| | - Ricardo Fernando Arrais
- Departamento de Pediatria, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brasil
| | | | - Maria das Graças Almeida
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brasil
| | - Mário Hiroyuki Hirata
- Departamento de Análises Clínicas e Toxicológicas, Universidade de São Paulo (USP), São Paulo, SP, Brasil
| | - Adriana Augusto de Rezende
- Departamento de Análises Clínicas e Toxicológicas, Universidade Federal do Rio Grande do Norte (UFRN), Natal, RN, Brasil
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Wang QF, Sun Z, Zheng FR, Zhang GW, Liu Z. Association of Adrenergic Receptor α2A (α2A-AR) Gene rs1800544 Polymorphism with Bone Mineral Density and Bone Turnover Markers in an Elderly Chinese Population. Med Sci Monit 2018; 24:5102-5109. [PMID: 30033441 PMCID: PMC6067018 DOI: 10.12659/msm.908376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Adrenergic receptor α2A (α2A-AR) is up-regulated in osteoporotic bone osteoblasts. Previous research demonstrated an association between polymorphism of a2A-AR gene and bone mineral density (BMD) as well as bone turnover markers (BTMs) in the Slovenian population. The present study aimed to investigate the association of rs1800544 polymorphism of α2A-AR gene with BMD and BTMs in the Chinese elderly population with osteoporosis (OP) or with osteoporotic fractures. MATERIAL AND METHODS A total of 346 unrelated elderly individuals were recruited in the study. Rs1800544 polymorphism was determined by Snapshot technology. BTMs were determined by electrochemiluminescence. BMDs at lumbar spine (LS) and proximal femur were measured with dual-energy X-ray absorptiometry (DEXA). Hardy-Weinberg equilibrium and distribution of genotype frequencies were verified using the chi-squared test. Analysis of co-variance (ANCOVA) adjusted for confounding factors was performed to explore the relationship of rs1800544 polymorphism with BMD and BTMs in all participants and in subgroups. RESULTS The genotype distributions in all subjects and in subgroups conformed to Hardy-Weinberg equilibrium (P>0.1). Distribution of genotype frequencies of subgroups showed no significant differences (P>0.05). Patients with GG genotype in the fracture group had significantly higher serum BTMs level compared with those carrying other genotypes (P<0.05). No significant association between rs1800544 and BTMs was detected in the elderly population with OP. Comparison of BMD at each site in all participants did not show any significant difference in subgroups with CC, CG, and GG genotypes (P>0.05). CONCLUSIONS Rs1800544 polymorphism is associated with BTMs level in Chinese elderly individuals with osteoporotic fractures, indicating the involvement of genetic variation of a2A-AR gene in bone metabolism.
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Affiliation(s)
- Qi-Fei Wang
- Department of Orthopedics, Peking University Shougang Hospital, Beijing, China (mainland)
| | - Zhe Sun
- Department of Orthopedics, Zibo Central Hospital, Zibo, Shandong, China (mainland)
| | - Fan-Rong Zheng
- Department of Orthopedics, Peking University Shougang Hospital, Beijing, China (mainland)
| | - Guang-Wu Zhang
- Department of Orthopedics, Peking University Shougang Hospital, Beijing, China (mainland)
| | - Zheng Liu
- Department of Orthopedics, Peking University Shougang Hospital, Beijing, China (mainland)
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13
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Solis-Moruno M, de Manuel M, Hernandez-Rodriguez J, Fontsere C, Gomara-Castaño A, Valsera-Naranjo C, Crailsheim D, Navarro A, Llorente M, Riera L, Feliu-Olleta O, Marques-Bonet T. Potential damaging mutation in LRP5 from genome sequencing of the first reported chimpanzee with the Chiari malformation. Sci Rep 2017; 7:15224. [PMID: 29123202 PMCID: PMC5680330 DOI: 10.1038/s41598-017-15544-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 10/30/2017] [Indexed: 12/29/2022] Open
Abstract
The genus Pan is the closest related to humans (Homo sapiens) and it includes two species: Pan troglodytes (chimpanzees) and Pan paniscus (bonobos). Different characteristics, some of biomedical aspect, separate them from us. For instance, some common human medical conditions are rare in chimpanzees (menopause, Alzheimer disease) although it is unclear to which extent longevity plays an active role in these differences. However, both humans and chimpanzees present similar pathologies, thus, understanding traits in chimpanzees can help unravel the molecular basis of human conditions. Here, we sequenced the genome of Nico, a central chimpanzee diagnosed with a particular biomedical condition, the Chiari malformation. We performed a variant calling analysis comparing his genome to 25 whole genomes from healthy individuals (bonobos and chimpanzees), and after predicting the effects of the genetic variants, we looked for genes within the OMIM database. We found a novel, private, predicted as damaging mutation in Nico in LRP5, a gene related to bone density alteration pathologies, and we suggest a link between this mutation and his Chiari malformation as previously shown in humans. Our results reinforce the idea that a comparison between humans and chimpanzees can be established in this genetic frame of common diseases.
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Affiliation(s)
- Manuel Solis-Moruno
- Institut de Biologia Evolutiva (CSIC-UPF), Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Doctor Aiguader 88, Barcelona, 08003, Spain.
| | - Marc de Manuel
- Institut de Biologia Evolutiva (CSIC-UPF), Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Doctor Aiguader 88, Barcelona, 08003, Spain
| | - Jessica Hernandez-Rodriguez
- Institut de Biologia Evolutiva (CSIC-UPF), Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Doctor Aiguader 88, Barcelona, 08003, Spain
| | - Claudia Fontsere
- Institut de Biologia Evolutiva (CSIC-UPF), Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Doctor Aiguader 88, Barcelona, 08003, Spain
| | - Alba Gomara-Castaño
- Fundació Mona, Carretera C-25, s/n, Riudellots de la Selva, 17457, Girona, Spain
| | | | - Dietmar Crailsheim
- Fundació Mona, Carretera C-25, s/n, Riudellots de la Selva, 17457, Girona, Spain
| | - Arcadi Navarro
- Institut de Biologia Evolutiva (CSIC-UPF), Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Doctor Aiguader 88, Barcelona, 08003, Spain
- Catalan Institution of Research and Advanced Studies (ICREA), Passeig de Lluís Companys, 23, Barcelona, 08010, Spain
- CNAG-CRG, Centre for Genomic Regulation, Barcelona Institute of Science and Technology (BIST), Baldiri i Reixac 4, Barcelona, 08028, Spain
| | - Miquel Llorente
- Fundació Mona, Carretera C-25, s/n, Riudellots de la Selva, 17457, Girona, Spain
| | - Laura Riera
- Fundació Mona, Carretera C-25, s/n, Riudellots de la Selva, 17457, Girona, Spain
| | - Olga Feliu-Olleta
- Fundació Mona, Carretera C-25, s/n, Riudellots de la Selva, 17457, Girona, Spain
| | - Tomas Marques-Bonet
- Institut de Biologia Evolutiva (CSIC-UPF), Departament de Ciències Experimentals i de la Salut, Universitat Pompeu Fabra, Doctor Aiguader 88, Barcelona, 08003, Spain.
- Catalan Institution of Research and Advanced Studies (ICREA), Passeig de Lluís Companys, 23, Barcelona, 08010, Spain.
- CNAG-CRG, Centre for Genomic Regulation, Barcelona Institute of Science and Technology (BIST), Baldiri i Reixac 4, Barcelona, 08028, Spain.
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14
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Tardieu C, Jung S, Niederreither K, Prasad M, Hadj-Rabia S, Philip N, Mallet A, Consolino E, Sfeir E, Noueiri B, Chassaing N, Dollfus H, Manière M, Bloch-Zupan A, Clauss F. Dental and extra-oral clinical features in 41 patients with WNT10A
gene mutations: A multicentric genotype-phenotype study. Clin Genet 2017; 92:477-486. [DOI: 10.1111/cge.12972] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 01/11/2017] [Accepted: 01/16/2017] [Indexed: 11/27/2022]
Affiliation(s)
- C. Tardieu
- ADES UMR 7268, Hôpital Timone, Service Odontologie; Aix Marseille University, APHM; Marseille France
| | - S. Jung
- Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Manifestations Odontologiques des Maladies Rares, O Rares; Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; Strasbourg France
| | - K. Niederreither
- CNRS UMR7104, INSERM U964; Institut de Génétique et de Biologie Moléculaire and Cellulaire, Centre Européen de Recherche en Biologie et en Médecine, Université de Strasbourg; Illkirch France
| | - M. Prasad
- Medical Genetics Laboratory, INSERM U1112, Translational Medicine federation (FMTS); Alsace Medical Genetics Institute; Strasbourg France
| | - S. Hadj-Rabia
- Reference Center for Genodermatosis; Necker Hospital, AP-HP; Paris France
| | - N. Philip
- INSERM GMGF, UMR-S910; Aix-Marseille University; Marseille France
- Department of Medical Genetics, Reference Center for Developmental Anomalies; APHM, Hôpital Timone; Marseille France
| | - A. Mallet
- Department of Medical Genetics, Reference Center for Developmental Anomalies; APHM, Hôpital Timone; Marseille France
| | - E. Consolino
- Department of Medical Genetics, Reference Center for Developmental Anomalies; APHM, Hôpital Timone; Marseille France
| | - E. Sfeir
- Department of Pediatric Dentistry; Libanese University; Beyrouth Lebanon
| | - B. Noueiri
- Department of Pediatric Dentistry; Libanese University; Beyrouth Lebanon
| | - N. Chassaing
- Department of Medical Genetics; University Hospital; Toulouse France
| | - H. Dollfus
- Medical Genetics Laboratory, INSERM U1112, Translational Medicine federation (FMTS); Alsace Medical Genetics Institute; Strasbourg France
| | - M.C. Manière
- Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Manifestations Odontologiques des Maladies Rares, O Rares; Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; Strasbourg France
- INSERM Unit UMR 1109; Osteoarticular and Dental Regenerative Nanomedicine; Strasbourg France
| | - A. Bloch-Zupan
- Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Manifestations Odontologiques des Maladies Rares, O Rares; Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; Strasbourg France
- CNRS UMR7104, INSERM U964; Institut de Génétique et de Biologie Moléculaire and Cellulaire, Centre Européen de Recherche en Biologie et en Médecine, Université de Strasbourg; Illkirch France
| | - F. Clauss
- Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Manifestations Odontologiques des Maladies Rares, O Rares; Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; Strasbourg France
- CNRS UMR7104, INSERM U964; Institut de Génétique et de Biologie Moléculaire and Cellulaire, Centre Européen de Recherche en Biologie et en Médecine, Université de Strasbourg; Illkirch France
- INSERM Unit UMR 1109; Osteoarticular and Dental Regenerative Nanomedicine; Strasbourg France
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15
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Elsafadi M, Manikandan M, Alajez NM, Hamam R, Dawud RA, Aldahmash A, Iqbal Z, Alfayez M, Kassem M, Mahmood A. MicroRNA-4739 regulates osteogenic and adipocytic differentiation of immortalized human bone marrow stromal cells via targeting LRP3. Stem Cell Res 2017; 20:94-104. [PMID: 28340487 DOI: 10.1016/j.scr.2017.03.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 02/25/2017] [Accepted: 03/01/2017] [Indexed: 12/16/2022] Open
Abstract
Understanding the regulatory networks underlying lineage differentiation and fate determination of human bone marrow stromal cells (hBMSC) is a prerequisite for their therapeutic use. The goal of the current study was to unravel the novel role of the low-density lipoprotein receptor-related protein 3 (LRP3) in regulating the osteogenic and adipogenic differentiation of immortalized hBMSCs. Gene expression profiling revealed significantly higher LRP3 levels in the highly osteogenic hBMSC clone imCL1 than in the less osteogenic clone imCL2, as well as a significant upregulation of LRP3 during the osteogenic induction of the imCL1 clone. Data from functional and gene expression assays demonstrated the role of LRP3 as a molecular switch promoting hBMSC lineage differentiation into osteoblasts and inhibiting differentiation into adipocytes. Interestingly, microRNA (miRNA) expression profiling identified miR-4739 as the most under-represented miRNA (-36.11 fold) in imCL1 compared to imCL2. The TargetScan prediction algorithm, combined with functional and biochemical assays, identified LRP3 mRNA as a novel target of miR-4739, with a single potential binding site for miR-4739 located in the LRP3 3' UTR. Regulation of LRP3 expression by miR-4739 was subsequently confirmed by qRT-PCR, western blotting, and luciferase assays. Over-expression of miR-4739 mimicked the effects of LRP3 knockdown on promoting adipogenic and suppressing osteogenic differentiation of hBMSCs. Hence, we report for the first time a novel biological role for the LRP3/hsa-miR-4739 axis in balancing osteogenic and adipocytic differentiation of hBMSCs. Our data support the potential utilization of miRNA-based therapies in regenerative medicine.
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Affiliation(s)
- Mona Elsafadi
- Stem Cell Unit, Department of Anatomy, College of Medicine,King Saud University, Riyadh 11461, Saudi Arabia; KMEB, Department of Endocrinology, University Hospital of Odense, University of Southern Denmark, Winslowsparken 25.1, DK-5000 Odense C, Denmark.
| | - Muthurangan Manikandan
- Stem Cell Unit, Department of Anatomy, College of Medicine,King Saud University, Riyadh 11461, Saudi Arabia
| | - Nehad M Alajez
- Stem Cell Unit, Department of Anatomy, College of Medicine,King Saud University, Riyadh 11461, Saudi Arabia.
| | - Rimi Hamam
- Stem Cell Unit, Department of Anatomy, College of Medicine,King Saud University, Riyadh 11461, Saudi Arabia
| | - Raed Abu Dawud
- Department of Comparative Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 12713, Saudi Arabia
| | - Abdullah Aldahmash
- Stem Cell Unit, Department of Anatomy, College of Medicine,King Saud University, Riyadh 11461, Saudi Arabia; Prince Naif Health Research Center, King Saud University, Riyadh 11461, Saudi Arabia.
| | - Zafar Iqbal
- Department of Basic Sciences, College of applied medical sciences, King Saud Bin Abdulaziz University for Health Sciences (KSAU-HS), National Guard Health Affairs, Al Ahsa, Saudi Arabia
| | - Musaad Alfayez
- Stem Cell Unit, Department of Anatomy, College of Medicine,King Saud University, Riyadh 11461, Saudi Arabia.
| | - Moustapha Kassem
- Stem Cell Unit, Department of Anatomy, College of Medicine,King Saud University, Riyadh 11461, Saudi Arabia; KMEB, Department of Endocrinology, University Hospital of Odense, University of Southern Denmark, Winslowsparken 25.1, DK-5000 Odense C, Denmark.
| | - Amer Mahmood
- Stem Cell Unit, Department of Anatomy, College of Medicine,King Saud University, Riyadh 11461, Saudi Arabia.
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16
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Abstract
OBJECTIVE This study investigated the effects of combined ovariectomy with dexamethasone treatment on rat lumbar vertebrae in comparison with osteoporosis induced via ovariectomy or dexamethasone alone, and analysis of the associated molecular mechanism. METHODS Sixty-two female Sprague-Dawley rats (3 months' old) were randomly divided into five treatment groups: an untreated baseline (BL) group; those receiving a sham operation (SHAM); those receiving a dexamethasone injection alone (DEXA); those undergoing bilateral ovariectomy (OVX); and those subjected to both ovariectomy and dexamethasone injection (OVX-DEXA). Animals in the BL group were euthanized at the beginning of the experiment, whereas animals in the remaining groups were euthanized at the end of the first month (M1), second month (M2), or third month (M3). Bone mineral density, bone microarchitecture, biomechanical properties of vertebrae, and serum levels of estrogen, amino-terminal propeptide of type I collagen (PINP), and β-C-telopeptide of type I collagen (β-CTX) were measured. In addition, we examined biglycan, runt-related transcription factor 2 (RUNX2), osteoprotegerin (OPG), lipoprotein receptor-related protein-5 (LRP-5), cathepsin K (CTSK), and sclerostin mRNA expression. RESULTS Bone mineral content and bone mineral density were markedly lower in the OVX-DEXA group compared with the OVX group at all time points examined. The relative bone surface (BS/TV, mm(-1), relative bone volume (BV/TV,%), and trabecular number (Tb.N, 1/mm) were markedly lower in the OVX-DEXA group compared with the remaining groups, whereas trabecular separation (Tb.Sp, mm) was markedly higher in the OVX-DEXA group compared with the remaining groups at M2 or M3. The OVX-DEXA group showed lower compressive strength and lower stiffness compared with the other groups at M2 and M3. Compressive displacement and energy absorption capacity were also markedly lower in the OVX-DEXA group compared with the OVX group at M3. Estradiol levels were markedly lower in the OVX-DEXA group compared with the other groups. Biglycan, runt-related transcription factor 2, osteoprotegerin, and lipoprotein receptor-related protein-5 were down-regulated in the DEXA, OVX, and OVX-DEXA groups compared with the BL and SHAM groups, whereas cathepsin K and sclerostin were up-regulated in the OVX-DEXA group compared with the DEXA and OVX groups. CONCLUSIONS Ovariectomy combined with dexamethasone induced more serious osteoporosis in the rat lumbar spine than either ovariectomy or dexamethasone alone. The combined effect may be due to a combination of suppressed bone formation and increased bone resorption related to an estradiol deficit.
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17
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Krøigård AB, Frost M, Larsen MJ, Ousager LB, Frederiksen AL. Bone structure in two adult subjects with impaired minor spliceosome function resulting from RNU4ATAC mutations causing microcephalic osteodysplastic primordial dwarfism type 1 (MOPD1). Bone 2016; 92:145-149. [PMID: 27591150 DOI: 10.1016/j.bone.2016.08.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 08/22/2016] [Accepted: 08/30/2016] [Indexed: 11/18/2022]
Abstract
Microcephalic osteodysplastic primordial dwarfism type 1 (MOPD1), or Taybi-Linder syndrome is characterized by distinctive skeletal dysplasia, severe intrauterine and postnatal growth retardation, microcephaly, dysmorphic features, and neurological malformations. It is an autosomal recessive disorder caused by homozygous or compound heterozygous mutations in the RNU4ATAC gene resulting in impaired function of the minor spliceosome. Here, we present the first report on bone morphology, bone density and bone microstructure in two adult MOPD1 patients and applied radiographs, dual energy X-ray absorptiometry, high-resolution peripheral quantitative computed tomography and biochemical evaluation. The MOPD1 patients presented with short stature, low BMI but normal macroscopic bone configuration. Bone mineral density was low. Compared to Danish reference data, total bone area, cortical bone area, cortical thickness, total bone density, cortical bone density, trabecular bone density and trabecular bone volume per tissue volume (BV/TV) were all low. These findings may correlate to the short stature and low body weight of the MOPD1 patients. Our findings suggest that minor spliceosome malfunction may be associated with altered bone modelling.
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Affiliation(s)
| | - Morten Frost
- Dept. of Endocrinology, Odense University Hospital, Odense, Denmark
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18
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Li F, Xing WH, Yang XJ, Jiang HY, Xia H. Influence of polymorphisms in insulin-like growth factor-1 on the risk of osteoporosis in a Chinese postmenopausal female population. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2015; 8:5727-5732. [PMID: 26191288 PMCID: PMC4503159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/26/2015] [Accepted: 04/14/2015] [Indexed: 06/04/2023]
Abstract
We conducted a case-control study in a Chinese postmenopausal population, and explore the potential role of the promoter region variation of the IGF-1 gene in bone mineral density and osteoporosis risk. 485 postmenopausal women with a primary diagnosis of osteoporosis and 485 age-matched controls were selected between 2012 and 2014. The Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) was used for rs35767, rs2288377 and rs5742612 of IGF-1 genotyping. By conditional regression analysis, individuals carrying TT genotype and CT+TT genotype of rs35767 were found to be correlated with an elevated risk of osteoporosis, with adjusted ORs (95% CI) of 1.90 (1.23-2.93) and 1.35 (1.04-1.76), respectively. Our study found that CT+TT genotype of rs35767 was significantly associated with moderate increased risk of osteoporosis in smokers and drinkers, and the ORs (95% CI) were 2.11 (1.06-4.20) and 2.36 (1.29-4.32), respectively. We found that those carrying CT+TT genotype of rs35767 had a significant lower BMD levels at L1-L4 vertebrae, femoral neck, total hip and trochanter compared to those with CC genotype. Our study suggests that TT genotype and CT+TT genotype of IGF-I rs35767 were associated with risk of osteoporosis and BMD levels.
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Affiliation(s)
- Feng Li
- Department of Spine Surgery, The Affiliated General Hospital of Guangzhou Military Region of Southern Medical UniversityGuangzhou, China
- Department of Spine Surgery, The Second Affiliated Hospital of Inner Mongolia Medical UniversityHohhot, China
| | - Wen-Hua Xing
- Department of Spine Surgery, The Second Affiliated Hospital of Inner Mongolia Medical UniversityHohhot, China
| | - Xue-Jun Yang
- Department of Spine Surgery, The Second Affiliated Hospital of Inner Mongolia Medical UniversityHohhot, China
| | - Hai-Yan Jiang
- Department of Cardiology, Inner Mongolia People’s HospitalHohhot, China
| | - Hong Xia
- Department of Spine Surgery, The Affiliated General Hospital of Guangzhou Military Region of Southern Medical UniversityGuangzhou, China
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