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Deng AF, Wang FX, Wang SC, Zhang YZ, Bai L, Su JC. Bone-organ axes: bidirectional crosstalk. Mil Med Res 2024; 11:37. [PMID: 38867330 PMCID: PMC11167910 DOI: 10.1186/s40779-024-00540-9] [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: 10/09/2023] [Accepted: 05/31/2024] [Indexed: 06/14/2024] Open
Abstract
In addition to its recognized role in providing structural support, bone plays a crucial role in maintaining the functionality and balance of various organs by secreting specific cytokines (also known as osteokines). This reciprocal influence extends to these organs modulating bone homeostasis and development, although this aspect has yet to be systematically reviewed. This review aims to elucidate this bidirectional crosstalk, with a particular focus on the role of osteokines. Additionally, it presents a unique compilation of evidence highlighting the critical function of extracellular vesicles (EVs) within bone-organ axes for the first time. Moreover, it explores the implications of this crosstalk for designing and implementing bone-on-chips and assembloids, underscoring the importance of comprehending these interactions for advancing physiologically relevant in vitro models. Consequently, this review establishes a robust theoretical foundation for preventing, diagnosing, and treating diseases related to the bone-organ axis from the perspective of cytokines, EVs, hormones, and metabolites.
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Affiliation(s)
- An-Fu Deng
- Institute of Translational Medicine, Organoid Research Center, Shanghai University, Shanghai, 200444, China
- National Center for Translational Medicine (Shanghai) SHU Branch, Shanghai University, Shanghai, 200444, China
| | - Fu-Xiao Wang
- Institute of Translational Medicine, Organoid Research Center, Shanghai University, Shanghai, 200444, China
- National Center for Translational Medicine (Shanghai) SHU Branch, Shanghai University, Shanghai, 200444, China
| | - Si-Cheng Wang
- Institute of Translational Medicine, Organoid Research Center, Shanghai University, Shanghai, 200444, China
- National Center for Translational Medicine (Shanghai) SHU Branch, Shanghai University, Shanghai, 200444, China
- Department of Orthopedics, Shanghai Zhongye Hospital, Shanghai, 200444, China
| | - Ying-Ze Zhang
- Department of Orthopaedics, the Third Hospital of Hebei Medical University, Orthopaedic Research Institution of Hebei Province, NHC Key Laboratory of Intelligent Orthopaedic Equipment, Shijiazhuang, 050051, China.
| | - Long Bai
- Institute of Translational Medicine, Organoid Research Center, Shanghai University, Shanghai, 200444, China.
- National Center for Translational Medicine (Shanghai) SHU Branch, Shanghai University, Shanghai, 200444, China.
- School of Medicine, Shanghai University, Shanghai, 200444, China.
- Wenzhou Institute of Shanghai University, Wenzhou, 325000, Zhejiang, China.
| | - Jia-Can Su
- Institute of Translational Medicine, Organoid Research Center, Shanghai University, Shanghai, 200444, China.
- National Center for Translational Medicine (Shanghai) SHU Branch, Shanghai University, Shanghai, 200444, China.
- Department of Orthopaedics, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
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Liu T, Wang Y, Qian B, Li P. Potential Metabolic Pathways Involved in Osteoporosis and Evaluation of Fracture Risk in Individuals with Diabetes. BIOMED RESEARCH INTERNATIONAL 2024; 2024:6640796. [PMID: 38884020 PMCID: PMC11178402 DOI: 10.1155/2024/6640796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 03/28/2024] [Accepted: 05/06/2024] [Indexed: 06/18/2024]
Abstract
Diabetes has a significant global prevalence. Chronic hyperglycemia affects multiple organs and tissues, including bones. A large number of diabetic patients develop osteoporosis; however, the precise relationship between diabetes and osteoporosis remains incompletely elucidated. The activation of the AGE-RAGE signaling pathway hinders the differentiation of osteoblasts and weakens the process of bone formation due to the presence of advanced glycation end products. High glucose environment can induce ferroptosis of osteoblasts and then develop osteoporosis. Hyperglycemia also suppresses the secretion of sex hormones, and the reduction of testosterone is difficult to effectively maintain bone mineral density. As diabetes therapy, thiazolidinediones control blood glucose by activating PPAR-γ. Activated PPAR-γ can promote osteoclast differentiation and regulate osteoblast function, triggering osteoporosis. The effects of metformin and insulin on bone are currently controversial. Currently, there are no appropriate tools available for assessing the risk of fractures in diabetic patients, despite the fact that the occurrence of osteoporotic fractures is considerably greater in diabetic individuals compared to those without diabetes. Further improving the inclusion criteria of FRAX risk factors and clarifying the early occurrence of osteoporosis sites unique to diabetic patients may be an effective way to diagnose and treat diabetic osteoporosis and reduce the risk of fracture occurrence.
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Affiliation(s)
- Tong Liu
- Emergency DepartmentHonghui HospitalXi'an Jiaotong UniversitySchool of Medicine, Xi'an, China
| | - Yanjun Wang
- Emergency DepartmentHonghui HospitalXi'an Jiaotong UniversitySchool of Medicine, Xi'an, China
| | - Bing Qian
- Emergency DepartmentHonghui HospitalXi'an Jiaotong UniversitySchool of Medicine, Xi'an, China
| | - Pan Li
- Emergency DepartmentHonghui HospitalXi'an Jiaotong UniversitySchool of Medicine, Xi'an, China
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Ru Y, Ma M, Zhou X, Kriti D, Cohen N, D’Souza S, Schaniel C, Motch Perrine SM, Kuo S, Pinto D, Housman G, Wu M, Holmes G, Schadt E, van Bakel H, Zhang B, Jabs EW. Transcriptomic landscape of human induced pluripotent stem cell-derived osteogenic differentiation identifies a regulatory role of KLF16. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.11.579844. [PMID: 38405902 PMCID: PMC10888757 DOI: 10.1101/2024.02.11.579844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Osteogenic differentiation is essential for bone development and metabolism, but the underlying gene regulatory networks have not been well investigated. We differentiated mesenchymal stem cells, derived from 20 human induced pluripotent stem cell lines, into preosteoblasts and osteoblasts, and performed systematic RNA-seq analyses of 60 samples for differential gene expression. We noted a highly significant correlation in expression patterns and genomic proximity among transcription factor (TF) and long noncoding RNA (lncRNA) genes. We identified TF-TF regulatory networks, regulatory roles of lncRNAs on their neighboring coding genes for TFs and splicing factors, and differential splicing of TF, lncRNA, and splicing factor genes. TF-TF regulatory and gene co-expression network analyses suggested an inhibitory role of TF KLF16 in osteogenic differentiation. We demonstrate that in vitro overexpression of human KLF16 inhibits osteogenic differentiation and mineralization, and in vivo Klf16+/- mice exhibit increased bone mineral density, trabecular number, and cortical bone area. Thus, our model system highlights the regulatory complexity of osteogenic differentiation and identifies novel osteogenic genes.
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Affiliation(s)
- Ying Ru
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Meng Ma
- Mount Sinai Genomics, Sema4, Stamford, CT, 06902, USA
| | - Xianxiao Zhou
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Mount Sinai Center for Transformative Disease Modeling, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Divya Kriti
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Ninette Cohen
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Present address: Division of Cytogenetics and Molecular Pathology, Zucker School of Medicine at Hofstra/Northwell, Northwell Health Laboratories, Lake Success, NY, 11030, USA
| | - Sunita D’Souza
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Present address: St Jude Children’s Research Hospital, Memphis, TN, 38105, USA
| | - Christoph Schaniel
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Department of Medicine, Division of Hematology and Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Mount Sinai Institute for Systems Biomedicine, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Susan M. Motch Perrine
- Department of Anthropology, Pennsylvania State University, University Park, PA, 16802, USA
| | - Sharon Kuo
- Department of Anthropology, Pennsylvania State University, University Park, PA, 16802, USA
- Department of Biomedical Sciences, University of Minnesota, Duluth, MN, 55812, USA
| | - Dalila Pinto
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Genevieve Housman
- Section of Genetic Medicine, Department of Medicine, University of Chicago, Chicago, IL, 60637, USA
- Department of Primate Behavior and Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, 04103, Germany
| | - Meng Wu
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Department of Clinical Genomics, Mayo Clinic, Rochester, MN, 55905
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, 55905
| | - Greg Holmes
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Eric Schadt
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Harm van Bakel
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Bin Zhang
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Mount Sinai Center for Transformative Disease Modeling, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Icahn Genomics Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Ethylin Wang Jabs
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
- Department of Clinical Genomics, Mayo Clinic, Rochester, MN, 55905
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, 55905
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Vigliar MFR, Marega LF, Duarte MAH, Alcalde MP, Rosso MPDO, Ferreira Junior RS, Barraviera B, Reis CHB, Buchaim DV, Buchaim RL. Photobiomodulation Therapy Improves Repair of Bone Defects Filled by Inorganic Bone Matrix and Fibrin Heterologous Biopolymer. Bioengineering (Basel) 2024; 11:78. [PMID: 38247955 PMCID: PMC10813421 DOI: 10.3390/bioengineering11010078] [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: 11/14/2023] [Revised: 12/22/2023] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
Biomaterials are used extensively in graft procedures to correct bone defects, interacting with the body without causing adverse reactions. The aim of this pre-clinical study was to analyze the effects of photobiomodulation therapy (PBM) with the use of a low-level laser in the repair process of bone defects filled with inorganic matrix (IM) associated with heterologous fibrin biopolymer (FB). A circular osteotomy of 4 mm in the left tibia was performed in 30 Wistar male adult rats who were randomly divided into three groups: G1 = IM + PBM, G2 = IM + FB and G3 = IM + FB + PBM. PBM was applied at the time of the experimental surgery and three times a week, on alternate days, until euthanasia, with 830 nm wavelength, in two points of the operated site. Five animals from each group were euthanized 14 and 42 days after surgery. In the histomorphometric analysis, the percentage of neoformed bone tissue in G3 (28.4% ± 2.3%) was higher in relation to G1 (24.1% ± 2.91%) and G2 (22.2% ± 3.11%) at 14 days and at 42 days, the percentage in G3 (35.1% ± 2.55%) was also higher in relation to G1 (30.1% ± 2.9%) and G2 (31.8% ± 3.12%). In the analysis of the birefringence of collagen fibers, G3 showed a predominance of birefringence between greenish-yellow in the neoformed bone tissue after 42 days, differing from the other groups with a greater presence of red-orange fibers. Immunohistochemically, in all experimental groups, it was possible to observe immunostaining for osteocalcin (OCN) near the bone surface of the margins of the surgical defect and tartrate-resistant acid phosphatase (TRAP) bordering the newly formed bone tissue. Therefore, laser photobiomodulation therapy contributed to improving the bone repair process in tibial defects filled with bovine biomaterial associated with fibrin biopolymer derived from snake venom.
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Affiliation(s)
- Maria Fernanda Rossi Vigliar
- Graduate Program in Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ/USP), Sao Paulo 05508-270, Brazil; (M.F.R.V.); (D.V.B.)
| | - Lais Furlaneto Marega
- Department of Biological Sciences, Bauru School of Dentistry, University of Sao Paulo (FOB/USP), Bauru 17012-901, Brazil; (L.F.M.); (M.P.d.O.R.); (C.H.B.R.)
| | - Marco Antonio Hungaro Duarte
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo (FOB/USP), Bauru 17012-901, Brazil; (M.A.H.D.); (M.P.A.)
| | - Murilo Priori Alcalde
- Department of Dentistry, Endodontics and Dental Materials, Bauru School of Dentistry, University of Sao Paulo (FOB/USP), Bauru 17012-901, Brazil; (M.A.H.D.); (M.P.A.)
| | - Marcelie Priscila de Oliveira Rosso
- Department of Biological Sciences, Bauru School of Dentistry, University of Sao Paulo (FOB/USP), Bauru 17012-901, Brazil; (L.F.M.); (M.P.d.O.R.); (C.H.B.R.)
| | - Rui Seabra Ferreira Junior
- Center for the Study of Venoms and Venomous Animals (CEVAP), Sao Paulo State University (University Estadual Paulista, UNESP), Botucatu 18610-307, Brazil; (R.S.F.J.); (B.B.)
- Graduate Programs in Tropical Diseases and Clinical Research, Botucatu Medical School (FMB), Sao Paulo State University (UNESP–University Estadual Paulista), Botucatu 18618-687, Brazil
| | - Benedito Barraviera
- Center for the Study of Venoms and Venomous Animals (CEVAP), Sao Paulo State University (University Estadual Paulista, UNESP), Botucatu 18610-307, Brazil; (R.S.F.J.); (B.B.)
- Graduate Programs in Tropical Diseases and Clinical Research, Botucatu Medical School (FMB), Sao Paulo State University (UNESP–University Estadual Paulista), Botucatu 18618-687, Brazil
| | - Carlos Henrique Bertoni Reis
- Department of Biological Sciences, Bauru School of Dentistry, University of Sao Paulo (FOB/USP), Bauru 17012-901, Brazil; (L.F.M.); (M.P.d.O.R.); (C.H.B.R.)
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, Postgraduate Department, University of Marilia (UNIMAR), Marilia 17525-902, Brazil
| | - Daniela Vieira Buchaim
- Graduate Program in Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ/USP), Sao Paulo 05508-270, Brazil; (M.F.R.V.); (D.V.B.)
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, Postgraduate Department, University of Marilia (UNIMAR), Marilia 17525-902, Brazil
- Medical School, University Center of Adamantina (UNIFAI), Adamantina 17800-000, Brazil
| | - Rogerio Leone Buchaim
- Graduate Program in Anatomy of Domestic and Wild Animals, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo (FMVZ/USP), Sao Paulo 05508-270, Brazil; (M.F.R.V.); (D.V.B.)
- Department of Biological Sciences, Bauru School of Dentistry, University of Sao Paulo (FOB/USP), Bauru 17012-901, Brazil; (L.F.M.); (M.P.d.O.R.); (C.H.B.R.)
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Smith SJ, Lopresti AL, Fairchild TJ. Exploring the efficacy and safety of a novel standardized ashwagandha ( Withania somnifera) root extract (Witholytin®) in adults experiencing high stress and fatigue in a randomized, double-blind, placebo-controlled trial. J Psychopharmacol 2023; 37:1091-1104. [PMID: 37740662 PMCID: PMC10647917 DOI: 10.1177/02698811231200023] [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] [Indexed: 09/25/2023]
Abstract
BACKGROUND Stress is a state of homeostasis in the body being challenged, resulting in a systemic response. It has become more prevalent in recent years and affects mental and physical health. AIMS Evaluate the effects of ashwagandha on stress, fatigue, and sex hormones in overweight or mildly obese men and women with self-reported stress and fatigue. METHODS Two-arm, parallel-group, 12-week, randomized, double-blind, placebo-controlled trial on overweight or mildly obese men and women aged 40-75 years, supplementing with 200 mg of an ashwagandha root extract (Witholytin®) twice daily. RESULTS/OUTCOMES Supplementation with ashwagandha was associated with a significant reduction in stress levels based on the Perceived Stress Scale (primary outcome); however, the improvements were not significantly different to the placebo group (p = 0.867). Based on the Chalder Fatigue Scale, there was a statistically significant reduction in fatigue symptoms in the ashwagandha group compared to the placebo group (p = 0.016), and participants taking ashwagandha also experienced a significant increase in heart rate variability (p = 0.003). However, there were no significant between-group differences in other self-report outcome measures. In the men taking ashwagandha, there was a significant increase in the blood concentrations of free testosterone (p = 0.048) and luteinizing hormone (p = 0.002) compared to the placebo group. CONCLUSIONS/INTERPRETATION The results of this study suggest that in overweight middle-to-older age adults experiencing high stress and fatigue, compared to the placebo, ashwagandha did not have a significantly greater impact on perceived stress levels. However, based on secondary outcome measures, it may have anti-fatigue effects. This may be via its impact on the autonomic nervous system. However, further research is required to expand on these current findings.
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Affiliation(s)
- Stephen J Smith
- Clinical Research Australia, Perth, WA, Australia
- College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
| | - Adrian L Lopresti
- Clinical Research Australia, Perth, WA, Australia
- College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
| | - Timothy J Fairchild
- College of Science, Health, Engineering and Education, Murdoch University, Perth, WA, Australia
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Saugandhika S, Sapra L, Kumari K, Srivastava RK. High Salt Diet Impairs Male Fertility in Mice via Modulating the Skeletal Homeostasis. Reprod Sci 2023; 30:3339-3352. [PMID: 37322320 DOI: 10.1007/s43032-023-01278-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 05/24/2023] [Indexed: 06/17/2023]
Abstract
Male reproductive functions and bone health are both adversely affected by the high salt diet (HSD). Nevertheless, the underlying mechanism via which it alters the sperm function remains largely unknown. This study examines the mechanism by which HSD affects male fertility by impairing bone health. For investigating the same, male BALB/c mice were categorized into three groups-HSD group (fed with 4% NaCl), a low salt diet (LSD) group (fed with 0.4% NaCl), and a control group (fed with a normal diet) for 6 weeks and thereafter assessed for various sperm parameters, bone turnover markers, and testosterone levels. Furthermore, the quantitative assessment of testosterone biosynthesis enzymes was performed. Interestingly, we observed that mice fed with HSD showed significant alterations in sperm parameters-motility, count, and vitality, including morphological changes compared to both the LSD and the control groups. In addition, serum analysis showed an increase in bone resorption markers and a decrease in bone formation markers in the HSD group (p < 0.05). Further, HSD caused a decrease in the testosterone level and mRNA expression of testosterone biosynthesis enzymes. Importantly, a significant decrease in bone formation marker osteocalcin (OC) was observed to coincide with the dip in testosterone level in the HSD group. Given that OC plays a key role in maintaining male fertility, the above findings suggest that a decrease in OC levels may affect the testosterone biosynthesis pathway, reducing testosterone hormone secretion and thereby resulting in decreased spermatogenesis. The study for the first time delineates and bridges the mechanism of HSD-mediated bone loss (results in a deficiency of OC) with decreased testosterone biosynthesis and thus impaired male fertility.
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Affiliation(s)
- Shrabani Saugandhika
- Department of Biotechnology, All India Institute of Medical Sciences, New Delhi, 110029, India.
| | - Leena Sapra
- Department of Biotechnology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Kiran Kumari
- Department of Biotechnology, All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Rupesh K Srivastava
- Department of Biotechnology, All India Institute of Medical Sciences, New Delhi, 110029, India.
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Jawich K, Rocca MS, Al Fahoum S, Alhalabi M, Di Nisio A, Foresta C, Ferlin A, De Toni L. RS 2247911 polymorphism of GPRC6A gene and serum undercarboxylated-osteocalcin are associated with testis function. J Endocrinol Invest 2022; 45:1673-1682. [PMID: 35482214 DOI: 10.1007/s40618-022-01803-9] [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: 01/14/2022] [Accepted: 04/07/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Undercarboxylated-Osteocalcin (ucOCN), acting on its putative receptor GPRC6A, was shown to stimulate testosterone (T) production by Leydig cells in rodents, in parallel with the hypothalamus-pituitary-gonadal axis (HPG) mediated by luteinizing hormone (LH). The aim of this cross-sectional study was to evaluate the association among serum ucOCN, rs2247911 polymorphism of GPRC6A gene and the endocrine/semen pattern in a cohort of infertile males, possibly identifying an involvement of the ucOCN-GPRC6A axis on testis function. METHODS 190 males, including 74 oligozoospermic subjects, 58 azoosperminc patients and 58 normozoospermic controls, were prospectively recruited at the Orient Hospital for Infertility, Assisted Reproduction and Genetics in Syria (Study N. 18FP), from July 2018 to June 2020. Outpatient evaluation included the clinical history, anthropometrics and a fasting blood sampling for hormonals, serum OCN (both carboxylated and undercarboxylated), glycemic and lipid profile and screening for rs2247911 GPRC6A gene polymorphism. RESULTS Higher serum ucOCN associated with higher T and HDL-cholesterol (respectively: r = 0.309, P < 0.001 and r = 0.248, P = 0.001), and with lower FSH (r = - 0.327, P < 0.001) and LDL-cholesterol (r = - 0.171; P = 0.018). Patients bearing the GG genotype of rs2247911 had higher sperm count compared to GA genotype (P = 0.043) and, compared to both AG and AA genotypes, had higher serum T (P = 0.004, P = 0.001) and lower triglycerides levels (P = 0.002, P < 0.001). Upon normalization for LH levels and body mass index, rs2274911 and ucOCN were significantly associated with higher serum T at linear stepwise regression analysis (P = 0.013, P = 0.007). CONCLUSIONS Our data suggest the involvement of ucOCN-GPRC6A axis in the regulation of T production by the testis, subsidiary to HPG.
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Affiliation(s)
- K Jawich
- Department of Biochemistry and Microbiology, Faculty of Pharmacy, Damascus University, Damascus, Syrian Arab Republic
| | - M Santa Rocca
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padua, Italy
- Unit of Andrology and Reproductive Medicine, University Hospital of Padova, Padua, Italy
| | - S Al Fahoum
- Department of Biochemistry and Microbiology, Faculty of Pharmacy, Damascus University, Damascus, Syrian Arab Republic.
| | - M Alhalabi
- Department of Embryology and Reproductive Medicine, Faculty of Medicine, Damascus University, Damascus, Syrian Arab Republic
| | - A Di Nisio
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padua, Italy
| | - C Foresta
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padua, Italy
| | - A Ferlin
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padua, Italy
| | - L De Toni
- Department of Medicine, Unit of Andrology and Reproductive Medicine, University of Padova, Padua, Italy
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Ahmad I, Newell-Fugate AE. Androgen and androgen receptor control of mitochondrial function. Am J Physiol Cell Physiol 2022; 323:C835-C846. [PMID: 35704694 DOI: 10.1152/ajpcell.00205.2022] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effects of androgens have been extensively studied in a variety of organs and cell types with increasing focus on the sexually dimorphic role androgens play not only with respect to cellular functions but also in metabolism. Although the classical mechanism of androgen action is via ligand-dependent binding with the nuclear transcription factor, androgen receptor (AR), cytosolic AR can also activate second messenger signaling pathways. Given that cytosolic AR can signal in this manner, there has been increased interest in the mechanisms by which androgens may control cellular organelle function. This review highlights the effects that androgens have on mitochondrial structure and function with emphasis on biogenesis, fusion/fission, mitophagy, bioenergetics (oxidative phosphorylation), and reactive oxygen species production. There are a number of publications on the effects of androgens in these general areas of mitochondrial function. However, the precise mechanisms by which androgens cause these effects are not known. Additionally, given that the nucleus and mitochondria work in tandem to control mitochondrial function and the mitochondria has its own DNA, future research efforts should focus on the direct, mechanistic effects of androgens on mitochondrial function.
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Affiliation(s)
- Irshad Ahmad
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
| | - Annie E Newell-Fugate
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, United States
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Dipla K, Kraemer RR, Constantini NW, Hackney AC. Relative energy deficiency in sports (RED-S): elucidation of endocrine changes affecting the health of males and females. Hormones (Athens) 2021; 20:35-47. [PMID: 32557402 DOI: 10.1007/s42000-020-00214-w] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 05/20/2020] [Indexed: 12/26/2022]
Abstract
The purpose of this review is to present a different perspective of the relative energy deficiency syndrome, to improve understanding of associated endocrine alterations, and to highlight the need for further research in this area. The term "female athlete triad" was coined over 25 years ago to describe three interrelated components: disordered eating, menstrual dysfunction, and low bone mass. The syndrome's etiology is attributed to energy intake deficiency relative to energy expenditure required for health, function, and daily living. Recently, it became clear that there was a need to broaden the term, as the disorder is not an issue of only three interrelated problems but of a whole spectrum of insults resulting from low energy availability (LEA; i.e., insufficient energy availability to cover basic physiological demands) that can potentially affect any exerciser, irrespective of gender. The new model, termed relative energy deficiency in sport (RED-S), has received greater scrutiny in sports medicine due to its effects on both health and performance in athletes of both sexes. RED-S results from low-energy diets (intentional or unintentional) and/or excessive exercise. Energy deficiency reduces hypothalamic pulsatile release of gonadotropin-releasing hormone, this impairing anterior pituitary release of gonadotropins. In women, reduced FSH and LH pulsatility produces hypoestrogenism, causing functional hypothalamic amenorrhea and decreased bone mass. In men, it reduces testosterone and negatively affects bone health. Moreover, LEA alters other hormonal pathways, causing physiological consequences, such as alteration of the thyroid hormone signaling pathways, leptin levels, carbohydrate metabolism, the growth hormone/insulin-like growth factor-1 axis, and sympathetic/parasympathetic tone. This review explains and clarifies the effects of RED-S in both sexes.
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Affiliation(s)
- Konstantina Dipla
- Department of Sports Science, Exercise Physiology and Biochemistry Laboratory, Serres, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Robert R Kraemer
- Department of Kinesiology and Health Studies, Exercise Physiology Laboratory, Southeastern Louisiana University, Hammond, LA, USA.
| | - Naama W Constantini
- Heidi Rotberg Sport Medicine Center, Shaare Zedek Medical Center, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Anthony C Hackney
- Department of Exercise & Sport Science, University of North Carolina, Chapel Hill, NC, USA
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10
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Russo V, Chen R, Armamento-Villareal R. Hypogonadism, Type-2 Diabetes Mellitus, and Bone Health: A Narrative Review. Front Endocrinol (Lausanne) 2020; 11:607240. [PMID: 33537005 PMCID: PMC7848021 DOI: 10.3389/fendo.2020.607240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 11/30/2020] [Indexed: 12/26/2022] Open
Abstract
One of the complications from chronic hyperglycemia and insulin resistance due to type 2 diabetes mellitus (T2DM) on the hypothalamic-pituitary-gonadal axis in men is the high prevalence of hypogonadotropic hypogonadism (HH). Both T2DM and hypogonadism are associated with impaired bone health and increased fracture risk but whether the combination results in even worse bone disease than either one alone is not well-studied. It is possible that having both conditions predisposes men to an even greater risk for fracture than either one alone. Given the common occurrence of HH or hypogonadism in general in T2DM, a significant number of men could be at risk. To date, there is very little information on the bone health men with both hypogonadism and T2DM. Insulin resistance, which is the primary defect in T2DM, is associated with low testosterone (T) levels in men and may play a role in the bidirectional relationship between these two conditions, which together may portend a worse outcome for bone. The present manuscript aims to review the available evidences on the effect of the combination of hypogonadism and T2DM on bone health and metabolic profile, highlights the possible metabolic role of the skeleton, and examines the pathways involved in the interplay between bone, insulin resistance, and gonadal steroids.
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Affiliation(s)
- Vittoria Russo
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX, United States
- Department of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX, United States
| | - Rui Chen
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX, United States
- Department of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX, United States
| | - Reina Armamento-Villareal
- Division of Endocrinology, Diabetes, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, TX, United States
- Department of Medicine, Michael E. DeBakey VA Medical Center, Houston, TX, United States
- *Correspondence: Reina Armamento-Villareal,
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11
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Rosso MPDO, Buchaim DV, Pomini KT, Coletta BBD, Reis CHB, Pilon JPG, Duarte Júnior G, Buchaim RL. Photobiomodulation Therapy (PBMT) Applied in Bone Reconstructive Surgery Using Bovine Bone Grafts: A Systematic Review. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E4051. [PMID: 31817369 PMCID: PMC6947623 DOI: 10.3390/ma12244051] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/22/2019] [Accepted: 11/29/2019] [Indexed: 02/07/2023]
Abstract
The use of low-level laser therapy (LLLT) with biomodulatory effects on biological tissues, currently called photobiomodulation therapy (PBMT), assists in healing and reduces inflammation. The application of biomaterials has emerged in bone reconstructive surgery, especially the use of bovine bone due to its biocompatibility. Due to the many benefits related to the use of PBMT and bovine bones, the aim of this research was to review the literature to verify the relationship between PBMT and the application of bovine bone in bone reconstruction surgeries. We chose the PubMed/MEDLINE, Web of Science, and Scopus databases for the search by matching the keywords: "Bovine bone AND low-level laser therapy", "Bovine bone AND photobiomodulation therapy", "Xenograft AND low-level laser therapy", and "Xenograft AND photobiomodulation therapy". The initial search of the three databases retrieved 240 articles, 18 of which met all inclusion criteria. In the studies concerning animals (17 in total), there was evidence of PBMT assisting in biomaterial-related conduction, formation of new bone, bone healing, immunomarker expression, increasing collagen fibers, and local inflammation reduction. However, the results disagreed with regard to the resorption of biomaterial particles. The only human study showed that PBMT with bovine bone was effective for periodontal regeneration. It was concluded that PBMT assists the process in bone reconstruction when associated with bovine bone, despite divergences between applied protocols.
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Affiliation(s)
- Marcelie Priscila de Oliveira Rosso
- Department of Biological Sciences (Anatomy), Bauru School of Dentistry, University of São Paulo (USP), Alameda Dr. Octávio Pinheiro Brisolla, 9-75-Vila Universitaria, Bauru, SP 17012-901, Brazil; (M.P.d.O.R.); (K.T.P.); (B.B.D.C.)
| | - Daniela Vieira Buchaim
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Avenue Hygino Muzzy Filho, 1001, Marília, SP 17525–902, Brazil; (D.V.B.); (C.H.B.R.); (J.P.G.P.); (G.D.J.)
- Medical School, University Center of Adamantina (UniFAI), Nove de Julho Street, 730-Centro, Adamantina, SP 17800-000, Brazil
| | - Karina Torres Pomini
- Department of Biological Sciences (Anatomy), Bauru School of Dentistry, University of São Paulo (USP), Alameda Dr. Octávio Pinheiro Brisolla, 9-75-Vila Universitaria, Bauru, SP 17012-901, Brazil; (M.P.d.O.R.); (K.T.P.); (B.B.D.C.)
| | - Bruna Botteon Della Coletta
- Department of Biological Sciences (Anatomy), Bauru School of Dentistry, University of São Paulo (USP), Alameda Dr. Octávio Pinheiro Brisolla, 9-75-Vila Universitaria, Bauru, SP 17012-901, Brazil; (M.P.d.O.R.); (K.T.P.); (B.B.D.C.)
| | - Carlos Henrique Bertoni Reis
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Avenue Hygino Muzzy Filho, 1001, Marília, SP 17525–902, Brazil; (D.V.B.); (C.H.B.R.); (J.P.G.P.); (G.D.J.)
| | - João Paulo Galletti Pilon
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Avenue Hygino Muzzy Filho, 1001, Marília, SP 17525–902, Brazil; (D.V.B.); (C.H.B.R.); (J.P.G.P.); (G.D.J.)
| | - Getúlio Duarte Júnior
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Avenue Hygino Muzzy Filho, 1001, Marília, SP 17525–902, Brazil; (D.V.B.); (C.H.B.R.); (J.P.G.P.); (G.D.J.)
| | - Rogério Leone Buchaim
- Department of Biological Sciences (Anatomy), Bauru School of Dentistry, University of São Paulo (USP), Alameda Dr. Octávio Pinheiro Brisolla, 9-75-Vila Universitaria, Bauru, SP 17012-901, Brazil; (M.P.d.O.R.); (K.T.P.); (B.B.D.C.)
- Postgraduate Program in Structural and Functional Interactions in Rehabilitation, University of Marilia (UNIMAR), Avenue Hygino Muzzy Filho, 1001, Marília, SP 17525–902, Brazil; (D.V.B.); (C.H.B.R.); (J.P.G.P.); (G.D.J.)
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12
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Liu Z, Chen R, Jiang Y, Yang Y, He L, Luo C, Dong J, Rong L. A meta-analysis of serum osteocalcin level in postmenopausal osteoporotic women compared to controls. BMC Musculoskelet Disord 2019; 20:532. [PMID: 31722698 PMCID: PMC6854738 DOI: 10.1186/s12891-019-2863-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 10/09/2019] [Indexed: 01/04/2023] Open
Abstract
Background Circulatory osteocalcin (OC) has been widely used as a biomarker to indicate bone turnover status in postmenopausal osteoporosis (PMO). However, the change of serum OC (sOC) level in PMO cases compared to postmenopausal controls remains controversial. Methods We searched the online database of PubMed and Cochrane Library. A meta-analysis of case-control studies was performed to compare the pooled sOC level between PMO patients and postmenopausal controls. Subgroup analysis according to potential confounding factors (different OC molecules and regions of the study population) was also performed. Results Ten case-control studies with 1577 postmenopausal women were included in this meta analysis. We found no significant difference in the pooled sOC level [mean difference (MD) = 1.84, 95% confidence interval (CI): (− 1.49, 5.16), p = 0.28] between PMO patients and controls. Subgroup analysis also revealed no significant difference in intact OC [MD = 1.76, 95%CI: (− 1.71, 5.23), p = 0.32] or N-terminal mid-fragment of the OC molecule [MD = 0.67, 95%(− 5.83, 7.18), p = 0.84] between groups. For different regions, no significant difference in sOC was found in Asian population between cases and controls [MD = -0.06, 95%(− 6.02, 5.89), p = 0.98], while the pooled sOC level was significantly higher in European PMO cases than controls [MD = 3.15, 95%(0.90, 5.39), p = 0.006]. Conclusions Our analysis revealed no significant difference in sOC level between PMO cases and controls according to all the current eligible studies. OC molecules are quite heterogeneous in the circulation and can be influenced by glucose metabolism. Therefore, sOC is currently not a good indicator for the high bone turnover status in PMO. More trials with standardized methodologies for the evaluation of circulatory OC are awaited to update our current findings.
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Affiliation(s)
- Zhongyu Liu
- Department of Spine Surgery, Institute of Drug Clinical Trial for Orthopedic Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Ruiqiang Chen
- Department of Spine Surgery, Institute of Drug Clinical Trial for Orthopedic Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Yutong Jiang
- Department of Rheumatology, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Yang Yang
- Department of Spine Surgery, Institute of Drug Clinical Trial for Orthopedic Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Lei He
- Department of Spine Surgery, Institute of Drug Clinical Trial for Orthopedic Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Chunxiao Luo
- Department of Spine Surgery, Institute of Drug Clinical Trial for Orthopedic Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China
| | - Jianwen Dong
- Department of Spine Surgery, Institute of Drug Clinical Trial for Orthopedic Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
| | - Limin Rong
- Department of Spine Surgery, Institute of Drug Clinical Trial for Orthopedic Diseases, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510630, China.
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13
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Weaver SR, Xie C, Charles JF, Hernandez LL. In utero and lactational exposure to the Selective Serotonin Reuptake Inhibitor fluoxetine compromises pup bones at weaning. Sci Rep 2019; 9:238. [PMID: 30659249 PMCID: PMC6338725 DOI: 10.1038/s41598-018-36497-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 11/22/2018] [Indexed: 12/14/2022] Open
Abstract
Selective Serotonin Reuptake Inhibitors (SSRIs) such as fluoxetine are widely prescribed to pregnant and breastfeeding women, yet the effects of peripartum SSRI exposure on neonatal bone are not known. In adult populations, SSRI use is associated with compromised bone health, and infants exposed to in utero SSRIs have a smaller head circumference and are shorter, suggesting possible effects on longitudinal growth. Yet no study to date has examined the effects of peripartum SSRIs on long bone growth or mass. We used microCT to determine the outcomes of in utero and lactational SSRI exposure on C57BL6 pup bone microarchitecture. We found that peripartum exposure to 20 mg/kg fluoxetine reduced femoral bone mineral density and bone volume fraction, negatively impacted trabecular and cortical parameters, and resulted in shorter femurs on postnatal day 21. Although SSRIs are considered the first-choice antidepressant for pregnant and lactating women due to a low side effect profile, SSRI exposure may compromise fetal and neonatal bone development.
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Affiliation(s)
- Samantha R Weaver
- Department of Dairy Science, University of Wisconsin-Madison, Madison, WI, USA
| | - Cynthia Xie
- Departments of Orthopedics and Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Julia F Charles
- Departments of Orthopedics and Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Laura L Hernandez
- Department of Dairy Science, University of Wisconsin-Madison, Madison, WI, USA.
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14
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Yang YY, Zheng SC, Wang WC, Yang ZW, Shan C, Zhang YW, Qi Y, Chen YH, Gu WQ, Wang WQ, Zhao HY, Liu JM, Sun SY. Osteocalcin Levels in Male Idiopathic Hypogonadotropic Hypogonadism: Relationship With the Testosterone Secretion and Metabolic Profiles. Front Endocrinol (Lausanne) 2019; 10:687. [PMID: 31681165 PMCID: PMC6798147 DOI: 10.3389/fendo.2019.00687] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 09/23/2019] [Indexed: 11/13/2022] Open
Abstract
Idiopathic hypogonadotropic hypogonadism (IHH) patients are characterized by the absence of puberty and varying degrees of deteriorated metabolic conditions. Osteocalcin (OC) could regulate testosterone secretion and energy metabolism, but it remains unknown whether such an effect exists in IHH patients. Our study is aimed to examine the relationship between serum OC levels with testosterone and its responsiveness to gonadotropin stimulation and metabolic profiles in male IHH patients. A total of 99 male patients aged 18-37 years and diagnosed with IHH were enrolled in the current study, and the relationships between OC and testicular volume, baseline total testosterone (TT), free testosterone (FT), and peak TT (Tmax) levels after human chorionic gonadotropin (hCG) stimulation, gonadotropin responsiveness index (GRI), which is calculated by dividing Tmax by testicular volume, as well as metabolic profiles, such as 2-h post-challenge glucose (2hPG) and fat percentage (fat%), were analyzed. The results showed that OC had an independent negative relationship with testicular volume (r = -0.253, P = 0.012) and a positive association with Tmax (r = 0.262, P = 0.014) after adjusting for confounders. In addition, OC was a major determinant of GRI (adjusted R 2 for the model = 0.164, P = 0.012), fat% (adjusted R 2 for the model = 0.100, P = 0.004), and 2hPG (adjusted R 2 for the model = 0.054, P = 0.013) in IHH patients. In conclusion, OC is associated with testosterone secretion upon gonadotropin stimulation, glucose metabolism, and fat mass variations in IHH. This study was registered at clinicaltrials.gov (NCT02310074).
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Affiliation(s)
- Yu-Ying Yang
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
| | - Si-Chang Zheng
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
| | - Wen-Cui Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
| | - Zu-Wei Yang
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
| | - Chang Shan
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
| | - Yu-Wen Zhang
- Department of Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Rui-jin Hospital North, Shanghai, China
| | - Yan Qi
- Department of Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Rui-jin Hospital North, Shanghai, China
| | - Yu-Hong Chen
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
- Department of Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Rui-jin Hospital North, Shanghai, China
| | - Wei-Qiong Gu
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
| | - Wei-Qing Wang
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
| | - Hong-Yan Zhao
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
| | - Jian-Min Liu
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
- *Correspondence: Jian-Min Liu
| | - Shou-Yue Sun
- Department of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Rui-jin Hospital, Shanghai, China
- Department of Endocrine and Metabolic Diseases, Shanghai Jiao-Tong University School of Medicine, Rui-jin Hospital North, Shanghai, China
- Shou-Yue Sun
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Abstract
The skeleton shows an unconventional role in the physiology and pathophysiology of the human organism, not only as the target tissue for a number of systemic hormones, but also as endocrine tissue modulating some skeletal and extraskeletal systems. From this point of view, the principal cells in the skeleton are osteocytes. These cells primarily work as mechano-sensors and modulate bone remodeling. Mechanically unloaded osteocytes synthetize sclerostin, the strong inhibitor of bone formation and RANKL, the strong activator of bone resorption. Osteocytes also express hormonally active vitamin D (1,25(OH)2D) and phosphatonins, such as FGF23. Both 1,25(OH)2D and FGF23 have been identified as powerful regulators of the phosphate metabolism, including in chronic kidney disease. Further endocrine cells of the skeleton involved in bone remodeling are osteoblasts. While FGF23 targets the kidney and parathyroid glands to control metabolism of vitamin D and phosphates, osteoblasts express osteocalcin, which through GPRC6A receptors modulates beta cells of the pancreatic islets, muscle, adipose tissue, brain and testes. This article reviews some knowledge concerning the interaction between the bone hormonal network and phosphate or energy homeostasis and/or male reproduction.
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Affiliation(s)
- I. ZOFKOVA
- Institute of Endocrinology, Prague, Czech Republic
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Abstract
The maintenance of our physiological functions and their adaptive response to environmental changes depend on precise crosstalk between organs. Recent advances in mouse genetics have helped demonstrate that this holistic view of physiology extends to the skeletal system, where many unexpected signaling axes are found to play essential roles affecting numerous organs. After being long regarded as a static tissue, functioning merely as a structural support system, the skeleton has seen its image evolve into a much more complex picture. The skeleton reveals itself as a key endocrine organ for the homeostasis of our body, both by its central position in our body, but also by the large number of physiological functions it influences. In this review, we discuss the multiple endocrine roles of osteocalcin, an osteoclast-derived molecule (Ocn), where its functional importance has steadily increased over the last 15 years.
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Affiliation(s)
- Julien Oury
- Center for biology and medicine, Skirball institute of biomolecular medicine, New York university medical school, New York, 10016, États-Unis
| | - Franck Oury
- Inserm U1151, Institut Necker-Enfants Malades (INEM), Département Croissance et signalisation, équipe 14, université Paris Descartes Sorbone-Paris Cité, 14, rue Maria Helena Vieira Da Silva, 75014 Paris, France
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17
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Lauretta R, Sansone M, Sansone A, Romanelli F, Appetecchia M. Gender in Endocrine Diseases: Role of Sex Gonadal Hormones. Int J Endocrinol 2018; 2018:4847376. [PMID: 30420884 PMCID: PMC6215564 DOI: 10.1155/2018/4847376] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 09/08/2018] [Accepted: 10/03/2018] [Indexed: 12/15/2022] Open
Abstract
Gender- and sex- related differences represent a new frontier towards patient-tailored medicine, taking into account that theoretically every medical specialty can be influenced by both of them. Sex hormones define the differences between males and females, and the different endocrine environment promoted by estrogens, progesterone, testosterone, and their precursors might influence both human physiology and pathophysiology. With the term Gender we refer, instead, to behaviors, roles, expectations, and activities carried out by the individual in society. In other words, "gender" refers to a sociocultural sphere of the individual, whereas "sex" only defines the biological sex. In the last decade, increasing attention has been paid to understand the influence that gender can have on both the human physiology and pathogenesis of diseases. Even the clinical response to therapy may be influenced by sex hormones and gender, but further research is needed to investigate and clarify how they can affect the human pathophysiology. The path to a tailored medicine in which every patient is able to receive early diagnosis, risk assessments, and optimal treatments cannot exclude the importance of gender. In this review, we have focused our attention on the involvement of sex hormones and gender on different endocrine diseases.
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Affiliation(s)
- R. Lauretta
- IRCCS Regina Elena National Cancer Institute, Endocrinology Unit, Rome, Italy
| | - M. Sansone
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza Università di Roma, Rome, Italy
| | - A. Sansone
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza Università di Roma, Rome, Italy
| | - F. Romanelli
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza Università di Roma, Rome, Italy
| | - M. Appetecchia
- IRCCS Regina Elena National Cancer Institute, Endocrinology Unit, Rome, Italy
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18
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Dani SU, Walter GF. Chronic arsenic intoxication diagnostic score (CAsIDS). J Appl Toxicol 2017; 38:122-144. [DOI: 10.1002/jat.3512] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 07/02/2017] [Accepted: 07/12/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Sergio Ulhoa Dani
- Medawar Institute for Medical and Environmental Research; Acangau Foundation; Paracatu MG Brazil
- Department of General Internal Medicine; St. Gallen Cantonal Hospital; Switzerland
- PizolCare Praxis Wartau; Trübbach Switzerland
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19
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Serum Osteocalcin and Testosterone Concentrations in Adult Males with or without Primary Osteoporosis: A Meta-Analysis. BIOMED RESEARCH INTERNATIONAL 2017; 2017:9892048. [PMID: 28831400 PMCID: PMC5558632 DOI: 10.1155/2017/9892048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 06/29/2017] [Accepted: 07/02/2017] [Indexed: 01/01/2023]
Abstract
Osteocalcin (Ocn) and testosterone play important roles in male skeleton. However, the concentrations of serum osteocalcin and testosterone have never been systematically compared between populations with and without primary male osteoporosis, a common skeletal disorder in adult males. We searched the PubMed, Embase, and Cochrane Library for relevant studies. A meta-analysis was performed to compare the serum osteocalcin and testosterone concentrations between primary osteoporotic males and age-matched nonosteoporotic (non-OP) males. Five case-control studies with 300 adult males were included. We found no significant difference between cases and controls in serum total osteocalcin (TOcn) [95% confidence interval (CI): −1.25, 1.31; p = 0.96] and total testosterone (TT) concentrations [95% CI: −0.88, 4.22; p = 0.20]. The level of evidence of this carefully performed meta-analysis is 3a according to Oxford (UK) CEBM Levels of Evidence. Future well-designed studies with larger sample size and better standardization of Ocn assay are awaited to confirm and update our current findings.
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Schündeln MM, Bäder L, Kiewert C, Herrmann R, Führer D, Hauffa BP, Grasemann C. Plasma concentrations of osteocalcin are associated with the timing of pubertal progress in boys. J Pediatr Endocrinol Metab 2017; 30:141-147. [PMID: 27988506 DOI: 10.1515/jpem-2016-0243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 11/11/2016] [Indexed: 11/15/2022]
Abstract
BACKGROUND Animal models have shown that the skeletal hormone osteocalcin stimulates testicular testosterone synthesis. To assess whether osteocalcin might be a useful marker to detect pubertal development disorders, we examined osteocalcin plasma concentrations in children and adolescents with and without disorders of pubertal development. METHODS Osteocalcin concentrations were investigated in a total of 244 patients with endocrine disorders (122 males, mean age: 11.87+3.77 years), including patients with precocious puberty and constitutional delay of puberty. RESULTS Osteocalcin concentrations were highest among adolescents with precocious puberty and advanced pubertal development (120.60±45.22 ng/mL), while the concentrations were lowest among patients with constitutional delay of puberty (102.20±37.13 ng/mL). Overall, osteocalcin concentrations were strongly correlated with markers of bone metabolism. CONCLUSIONS Although plasma osteocalcin concentrations are associated with pubertal development in boys, it does not appear to be a useful diagnostic marker for altered pubertal development.
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Lin X, Hanson E, Betik AC, Brennan-Speranza TC, Hayes A, Levinger I. Hindlimb Immobilization, But Not Castration, Induces Reduction of Undercarboxylated Osteocalcin Associated With Muscle Atrophy in Rats. J Bone Miner Res 2016; 31:1967-1978. [PMID: 27291707 DOI: 10.1002/jbmr.2884] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 06/01/2016] [Accepted: 06/04/2016] [Indexed: 11/10/2022]
Abstract
Undercarboxylated osteocalcin (ucOC) has been implicated in skeletal muscle insulin sensitivity and function. However, whether muscle mass and strength loss in atrophic conditions is related to a reduction in ucOC is not clear. We hypothesized that both immobilization and testosterone depletion would lead to reductions in ucOC, associated with not only the degree of muscle atrophy but also changes to atrophy signaling pathway(s) in male rats. We subjected 8-week-old male Fischer (F344) rats to 7 days of hindlimb immobilization 10 days after castration surgery. Hindlimb immobilization, but not castration, resulted in a significant reduction in ucOC (30%) and lower ucOC was correlated with the degree of muscle loss and muscle weakness. ucOC levels, the expression of ucOC-sensitive receptor G protein-coupled receptor, class C, group 6, member A (GPRC6A), as well as the activity of extracellular signal-regulated kinase (ERK) and 5' adenosine monophosphate-activated protein kinase (AMPK) were associated with the expression and activity of a number of proteins in the mammalian target of rapamycin complex 1 (mTORC1) and Forkhead Box O (FOXO) signaling pathways in a muscle type-specific manner. These data suggest that ucOC may have other effects on skeletal muscle in addition to its insulin sensitizing effect. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Xuzhu Lin
- Clinical Exercise Science Research Program, Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia
| | - Erik Hanson
- Clinical Exercise Science Research Program, Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia.,College of Health and Biomedicine, Victoria University, Melbourne, Australia
| | - Andrew C Betik
- Clinical Exercise Science Research Program, Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia.,College of Health and Biomedicine, Victoria University, Melbourne, Australia
| | - Tara C Brennan-Speranza
- Department of Physiology and Bosch Institute for Medical Research, University of Sydney, Australia
| | - Alan Hayes
- Clinical Exercise Science Research Program, Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia.,College of Health and Biomedicine, Victoria University, Melbourne, Australia.,Australian Institute for Musculoskeletal Science, Western Health, Melbourne, Australia
| | - Itamar Levinger
- Clinical Exercise Science Research Program, Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia
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22
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Developmental evidence for obstetric adaptation of the human female pelvis. Proc Natl Acad Sci U S A 2016; 113:5227-32. [PMID: 27114515 DOI: 10.1073/pnas.1517085113] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The bony pelvis of adult humans exhibits marked sexual dimorphism, which is traditionally interpreted in the framework of the "obstetrical dilemma" hypothesis: Giving birth to large-brained/large-bodied babies requires a wide pelvis, whereas efficient bipedal locomotion requires a narrow pelvis. This hypothesis has been challenged recently on biomechanical, metabolic, and biocultural grounds, so that it remains unclear which factors are responsible for sex-specific differences in adult pelvic morphology. Here we address this issue from a developmental perspective. We use methods of biomedical imaging and geometric morphometrics to analyze changes in pelvic morphology from late fetal stages to adulthood in a known-age/known-sex forensic/clinical sample. Results show that, until puberty, female and male pelves exhibit only moderate sexual dimorphism and follow largely similar developmental trajectories. With the onset of puberty, however, the female trajectory diverges substantially from the common course, resulting in rapid expansion of obstetrically relevant pelvic dimensions up to the age of 25-30 y. From 40 y onward females resume a mode of pelvic development similar to males, resulting in significant reduction of obstetric dimensions. This complex developmental trajectory is likely linked to the pubertal rise and premenopausal fall of estradiol levels and results in the obstetrically most adequate pelvic morphology during the time of maximum female fertility. The evidence that hormones mediate female pelvic development and morphology supports the view that solutions of the obstetrical dilemma depend not only on selection and adaptation but also on developmental plasticity as a response to ecological/nutritional factors during a female's lifetime.
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23
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Plant TM. Neuroendocrine control of the onset of puberty. Front Neuroendocrinol 2015; 38:73-88. [PMID: 25913220 PMCID: PMC4457677 DOI: 10.1016/j.yfrne.2015.04.002] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Revised: 04/10/2015] [Accepted: 04/13/2015] [Indexed: 11/21/2022]
Abstract
This chapter is based on the Geoffrey Harris Memorial Lecture presented at the 8th International Congress of Neuroendocrinology, which was held in Sydney, August 2014. It provides the development of our understanding of the neuroendocrine control of puberty since Harris proposed in his 1955 monograph (Harris, 1955) that "a major factor responsible for puberty is an increased rate of release of pituitary gonadotrophin" and posited "that a neural (hypothalamic) stimulus, via the hypophysial portal vessels, may be involved." Emphasis is placed on the neurobiological mechanisms governing puberty in highly evolved primates, although an attempt is made to reverse translate a model for the timing of puberty in man and monkey to non-primate species.
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Affiliation(s)
- Tony M Plant
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh School of Medicine and Magee-Womens Research Institute, USA.
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24
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Probst F, Bobst C, Lobmaier JS. Testosterone-to-oestradiol ratio is associated with female facial attractiveness. Q J Exp Psychol (Hove) 2015; 69:89-99. [PMID: 25730636 DOI: 10.1080/17470218.2015.1024696] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The relationship between facial shape and attractiveness has been extensively studied, yet few studies have investigated the underlying biological factors of an attractive face. Many researchers have proposed a link between female attractiveness and sex hormones, but there is little empirical evidence in support of this assumption. In the present study we investigated the relationship between circulating sex hormones and attractiveness. We created prototypes by separately averaging photographs of 15 women with high and low levels of testosterone, oestradiol, and testosterone-to-oestradiol ratio levels, respectively. An independent set of facial images was then shape transformed toward these prototypes. We paired the resulting images in such a way that one face depicted a female with high hormone level and the other one with a low hormone level. Fifty participants were asked to choose the more attractive face of each pair. We found that low testosterone-to-oestradiol ratio and low testosterone were positively associated with female facial attractiveness. There was no preference for faces with high oestradiol levels. In an additional experiment with 36 participants we confirmed that a low testosterone-to-oestradiol ratio plays a larger role than low testosterone alone. These results provide empirical evidence that an attractive female face is shaped by interacting effects of testosterone and oestradiol.
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Affiliation(s)
- Fabian Probst
- a Institute of Psychology , University of Bern , Bern , Switzerland.,b Center for Cognition, Learning, and Memory , University of Bern , Bern , Switzerland
| | - Cora Bobst
- a Institute of Psychology , University of Bern , Bern , Switzerland.,b Center for Cognition, Learning, and Memory , University of Bern , Bern , Switzerland
| | - Janek S Lobmaier
- a Institute of Psychology , University of Bern , Bern , Switzerland.,b Center for Cognition, Learning, and Memory , University of Bern , Bern , Switzerland
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25
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Coudert AE, de Vernejoul MC, Muraca M, Del Fattore A. Osteopetrosis and its relevance for the discovery of new functions associated with the skeleton. Int J Endocrinol 2015; 2015:372156. [PMID: 25873953 PMCID: PMC4385565 DOI: 10.1155/2015/372156] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 10/16/2014] [Accepted: 10/30/2014] [Indexed: 01/29/2023] Open
Abstract
Osteopetrosis is a rare genetic disorder characterized by an increase of bone mass due to defective osteoclast function. Patients typically displayed spontaneous fractures, anemia, and in the most severe forms hepatosplenomegaly and compression of cranial facial nerves leading to deafness and blindness. Osteopetrosis comprises a heterogeneous group of diseases as several forms are known with different models of inheritance and severity from asymptomatic to lethal. This review summarizes the genetic and clinical features of osteopetrosis, emphasizing how recent studies of this disease have contributed to understanding the central role of the skeleton in the whole body physiology. In particular, the interplay of bone with the stomach, insulin metabolism, male fertility, the immune system, bone marrow, and fat is described.
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Affiliation(s)
- Amélie E. Coudert
- Institut National de la Santé et de la Recherche Médicale U1138, Centre de Recherche des Cordeliers, Paris, France
| | | | - Maurizio Muraca
- Regenerative Medicine Unit, Bambino Gesù Children's Hospital, IRCCS, Piazza Sant'Onofrio 4, 00165 Rome, Italy
| | - Andrea Del Fattore
- Regenerative Medicine Unit, Bambino Gesù Children's Hospital, IRCCS, Piazza Sant'Onofrio 4, 00165 Rome, Italy
- *Andrea Del Fattore:
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Abstract
Bone is a target tissue for hormones, such as the sex steroids, parathormon, vitamin D, calcitonin, glucocorticoids, and thyroid hormones. In the last decade, other "non-classic" hormones that modulate the bone tissue have been identified. While incretins (GIP and GLP-1) inhibit bone remodeling, angiotensin acts to promote remodeling. Bone morphogenetic protein (BMP) has also been found to have anabolic effects on the skeleton by activating bone formation during embryonic development, as well as in the postnatal period of life. Bone has also been identified as an endocrine tissue that produces a number of hormones, that bind to and modulate extra-skeletal receptors. Osteocalcin occupies a central position in this context. It can increase insulin secretion, insulin sensitivity and regulate metabolism of fatty acids. Moreover, osteocalcin also influences phosphate metabolism via osteocyte-derived FGF23 (which targets the kidneys and parathyroid glands to control phosphate reabsorption and metabolism of vitamin D). Finally, osteocalcin stimulates testosterone synthesis in Leydig cells and thus may play some role in male fertility. Further studies are necessary to confirm clinically important roles for skeletal tissue in systemic regulations.
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Affiliation(s)
- I Zofkova
- Institute of Endocrinology, Prague, Czech Republic.
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27
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Chamouni A, Oury F. Reciprocal interaction between bone and gonads. Arch Biochem Biophys 2014; 561:147-53. [DOI: 10.1016/j.abb.2014.06.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 06/14/2014] [Accepted: 06/17/2014] [Indexed: 11/30/2022]
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28
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Pinto PIS, Estêvão MD, Power DM. Effects of estrogens and estrogenic disrupting compounds on fish mineralized tissues. Mar Drugs 2014; 12:4474-94. [PMID: 25196834 PMCID: PMC4145326 DOI: 10.3390/md12084474] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 07/17/2014] [Accepted: 07/30/2014] [Indexed: 02/07/2023] Open
Abstract
Estrogens play well-recognized roles in reproduction across vertebrates, but also intervene in a wide range of other physiological processes, including mineral homeostasis. Classical actions are triggered when estrogens bind and activate intracellular estrogen receptors (ERs), regulating the transcription of responsive genes, but rapid non-genomic actions initiated by binding to plasma membrane receptors were recently described. A wide range of structurally diverse compounds from natural and anthropogenic sources have been shown to interact with and disrupt the normal functions of the estrogen system, and fish are particularly vulnerable to endocrine disruption, as these compounds are frequently discharged or run-off into waterways. The effect of estrogen disruptors in fish has mainly been assessed in relation to reproductive endpoints, and relatively little attention has been given to other disruptive actions. This review will overview the actions of estrogens in fish, including ER isoforms, their expression, structure and mechanisms of action. The estrogen functions will be considered in relation to mineral homeostasis and actions on mineralized tissues. The impact of estrogenic endocrine disrupting compounds on fish mineralized tissues will be reviewed, and the potential adverse outcomes of exposure to such compounds will be discussed. Current lacunae in knowledge are highlighted along with future research priorities.
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Affiliation(s)
- Patricia I S Pinto
- CCMAR-Centre of Marine Sciences, University of Algarve, Campus de Gambelas, Faro 8005-139, Portugal.
| | - Maria D Estêvão
- CCMAR-Centre of Marine Sciences, University of Algarve, Campus de Gambelas, Faro 8005-139, Portugal.
| | - Deborah M Power
- CCMAR-Centre of Marine Sciences, University of Algarve, Campus de Gambelas, Faro 8005-139, Portugal.
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29
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Lancaster ST, Blackburn J, Blom A, Makishima M, Ishizawa M, Mansell JP. 24,25-Dihydroxyvitamin D3 cooperates with a stable, fluoromethylene LPA receptor agonist to secure human (MG63) osteoblast maturation. Steroids 2014; 83:52-61. [PMID: 24513053 DOI: 10.1016/j.steroids.2014.01.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Revised: 12/18/2013] [Accepted: 01/27/2014] [Indexed: 12/29/2022]
Abstract
Vitamin D receptor (VDR) agonists supporting human osteoblast (hOB) differentiation in the absence of bone resorption are attractive agents in a bone regenerative setting. One potential candidate fulfilling these roles is 24,25-dihydroxy vitamin D3 (24,25D). Over forty years ago it was reported that supraphysiological levels of 24,25D could stimulate intestinal calcium uptake and aid bone repair without causing bone calcium mobilisation. VDR agonists co-operate with certain growth factors to enhance hOB differentiation but whether 24,25D might act similarly in promoting cellular maturation has not been described. Given our discovery that lysophosphatidic acid (LPA) co-operated with VDR agonists to enhance hOB maturation, we co-treated MG63 hOBs with 24,25D and a phosphatase-resistant LPA analog. In isolation 24,25D inhibited proliferation and stimulated osteocalcin expression. When co-administered with the LPA analog there were synergistic increases in alkaline phosphatase (ALP). These are encouraging findings which may help realise the future application of 24,25D in promoting osseous repair.
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Affiliation(s)
- Sarah Tamar Lancaster
- Musculoskeletal Research Unit, Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK
| | - Julia Blackburn
- Musculoskeletal Research Unit, Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK
| | - Ashley Blom
- Musculoskeletal Research Unit, Avon Orthopaedic Centre, Southmead Hospital, Bristol BS10 5NB, UK
| | - Makoto Makishima
- Division of Biochemistry, Department of Biomedical Sciences, Nihon University School of Medicine, 30-1 Oyaguchi-kamicho, Itabashi-ku, Tokyo 173-8610, Japan
| | - Michiyasu Ishizawa
- Division of Biochemistry, Department of Biomedical Sciences, Nihon University School of Medicine, 30-1 Oyaguchi-kamicho, Itabashi-ku, Tokyo 173-8610, Japan
| | - Jason Peter Mansell
- Department of Biological, Biomedical & Analytical Sciences, University of the West of England, Frenchay Campus, Coldharbour Lane, Bristol BS16 1QY, UK.
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30
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Tirabassi G, delli Muti N, Gioia A, Biagioli A, Lenzi A, Balercia G. Effects of testosterone replacement therapy on bone metabolism in male post-surgical hypogonadotropic hypogonadism: focus on the role of androgen receptor CAG polymorphism. J Endocrinol Invest 2014; 37:393-400. [PMID: 24458833 DOI: 10.1007/s40618-014-0052-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 12/20/2013] [Indexed: 11/26/2022]
Abstract
INTRODUCTION AND AIM The relationship between androgen receptor (AR) CAG polymorphism and bone metabolism is highly controversial. We, therefore, aimed to evaluate the independent role of AR CAG repeat polymorphism on bone metabolism improvement induced by testosterone replacement therapy (TRT) in male post-surgical hypogonadotropic hypogonadism, a condition frequently associated with hypopituitarism and in which the effects of TRT have to be distinguished from those resulting from concomitant administration of pituitary function replacing hormones. METHODS 12 men affected by post-surgical hypogonadotropic hypogonadism [mean duration of hypogonadism 8.3 ± 2.05 (SD) months] were retrospectively assessed before and after TRT (from 74 to 84 weeks after the beginning of therapy). The following measures were studied: parameters of bone metabolism [serum markers and bone mineral density (BMD)], pituitary dependent hormones and genetic analysis (AR CAG repeat number). RESULTS Total testosterone, estradiol, free T4 (FT4) and insulin-like growth factor-1 (IGF-1) increased between the two phases, while follicle stimulating hormone (FSH) decreased. While serum markers did not vary significantly between the two phases, BMD improved slightly but significantly in all the studied sites. The number of CAG triplets correlated negatively and significantly with all the variations (Δ-) of BMDs. Conversely, Δ-testosterone correlated positively and significantly with all studied Δ-BMDs, while Δ-FSH, Δ-estradiol, Δ-FT4, and Δ-IGF-1 did not correlate significantly with any of the Δ-BMDs. Multiple linear regression analysis, after correction for Δ-testosterone, showed that CAG repeat length was negatively and significantly associated with ∆-BMD of all measured sites. CONCLUSIONS Our data suggest that, in post-surgical male hypogonadotropic hypogonadism, shorter AR CAG tract is independently associated with greater TRT-induced improvement of BMD.
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Affiliation(s)
- G Tirabassi
- Division of Endocrinology, Department of Clinical and Molecular Sciences, Umberto I Hospital, Polytechnic University of Marche, Via Conca 71, 60126, Ancona, Italy
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31
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Mukherjee A, Larson EA, Klein RF, Rotwein P. Distinct actions of akt1 on skeletal architecture and function. PLoS One 2014; 9:e93040. [PMID: 24663486 PMCID: PMC3963959 DOI: 10.1371/journal.pone.0093040] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 02/28/2014] [Indexed: 11/24/2022] Open
Abstract
Skeletal integrity is dependent on the coordinated actions of bone-forming osteoblasts and bone-resorbing osteoclasts, which recognize and respond to multiple environmental inputs. Here we have studied the roles in bone development and growth of Akt1 and Akt2, two closely related signaling proteins, by evaluating mice lacking either of these enzymes. Global deficiency of Akt1 but not Akt2 caused a reduction in whole body and femoral bone mineral density, in femoral cortical thickness and volume, and in trabecular thickness in both males and females when measured at 20-weeks of age, which was reflected in diminished femoral resistance to fracture. Haplo-deficiency of Akt1 in male mice also decreased femoral cortical and trabecular skeletal parameters, and reduced bone strength. Cell-based studies showed that genetic Akt1 deficiency diminished the rate of proliferation of osteoblast progenitors and impaired osteoclast differentiation in primary culture but that loss of Akt2 did not. Our results demonstrate differential effects of Akt1 and Akt2 on skeletal maturation and architecture through actions on both osteoblast and osteoclast precursors.
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Affiliation(s)
- Aditi Mukherjee
- Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Emily A. Larson
- Bone and Mineral Research Unit, Department of Medicine, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Robert F. Klein
- Bone and Mineral Research Unit, Department of Medicine, Oregon Health & Science University, Portland, Oregon, United States of America
- Portland Veterans Affairs Medical Center, Oregon Health & Science University, Portland, Oregon, United States of America
| | - Peter Rotwein
- Department of Biochemistry and Molecular Biology, Oregon Health & Science University, Portland, Oregon, United States of America
- * E-mail:
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32
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Karsenty G, Oury F. Regulation of male fertility by the bone-derived hormone osteocalcin. Mol Cell Endocrinol 2014; 382:521-526. [PMID: 24145129 PMCID: PMC3850748 DOI: 10.1016/j.mce.2013.10.008] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 10/08/2013] [Accepted: 10/09/2013] [Indexed: 12/27/2022]
Abstract
Traditionally, bone has been viewed as a relatively static tissue only fulfilling mechanical and scaffolding function. In the past decade however, this classical view of the bone has considerably evolved towards a more complex picture. It is now clear that the skeleton is not only a recipient for hormonal input but it is also an endocrine organ itself. Through the secretion of an osteoblast-derived molecule, osteocalcin, the skeleton regulates glucose homeostasis and male reproductive functions. When undercarboxylated, osteocalcin acts following its binding to a G-coupled receptor, Gprc6a, on pancreatic β cells to increase insulin secretion, on muscle and white adipose tissue to promote glucose homeostasis and on Leydig cells of the testis to favor testosterone biosynthesis. More recently, it was also shown that osteocalcin acts via a pancreas-bone-testis axis that regulates, independently of and in parallel to the hypothalamus-pituitary-testis axis, male reproductive functions by promoting testosterone biosynthesis. Lastly, in trying to expand the biological relevance of osteocalcin from mouse to human, it was shown that Gprc6a is a potential new susceptibility locus for primary testicular failure in humans. Altogether, these results shed new light on the importance of the endocrine role of the skeleton and also provide credence to the search for additional endocrine functions of this organ.
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Affiliation(s)
- Gerard Karsenty
- Columbia University, Department of Genetics and Development, HHSC 1602, 701 West 168th Street, New York, NY 10032, USA.
| | - Franck Oury
- Columbia University, Department of Genetics and Development, HHSC 1602, 701 West 168th Street, New York, NY 10032, USA
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Tseng SH, Sung CH, Chen LG, Lai YJ, Chang WS, Sung HC, Wang CC. Comparison of chemical compositions and osteoprotective effects of different sections of velvet antler. JOURNAL OF ETHNOPHARMACOLOGY 2013; 151:352-360. [PMID: 24212078 DOI: 10.1016/j.jep.2013.10.060] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 10/17/2013] [Accepted: 10/23/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Velvet antlers (VA) have been claimed for centuries to have numerous medical benefits including strengthen bones. To investigate and compare the anti-osteoporotic activities from different sections of VA. MATERIALS AND METHODS Fresh VA prepared from farmed sika deers (Cervus nippon) was divided into upper (VAU), middle (VAM), and basal (VAB) sections. The chemical constituents and anti-osteoporotic effect of different sections from VA were evaluated using ovariectomized rats. RESULTS Levels of water-soluble extracts, diluted alcoholic extract, amino acids, testosterone, insulin-like growth factor (IGF)-1 and testosterone plus estradiol significantly differed among the different sections. Levels of these constituents were significantly higher in the upper section than in the basal section. Moreover, levels of testosterone and IGF-1 of the VAM were also significantly higher than those of the VAB. Calcium level increased downward from the tip with statistical significance. The strength of vertebrae increased in all VA-treated groups compared to the control, but only treatment with VAU and VAM increased the strength of the femur and the microarchitecure of the trabecular bone. Alkaline phosphatase levels of VAU- and VAM-treated groups significantly decreased, but osteocalcin did not significantly change. Moreover, VAU and VAM dose-dependently increased proliferation and mineralization of MC3T3-E1 cells. CONCLUSION Our study provides strong evidence for the regional differences in the effectiveness of velvet antler in treating osteoporosis. However, further studies are needed to elucidate the bioactive chemical constituents associated with the anti-osteoporotic effects of velvet antler.
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Affiliation(s)
- Sung-Hui Tseng
- School of Medicine, College of Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei City 11031, Taiwan; Orthopedics Research Center, Taipei Medical University Hospital, 252 Wu-Hsing Street, Taipei City 11031, Taiwan.
| | - Chun-Hsien Sung
- Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing Street, Taipei City 11031, Taiwan.
| | - Lih-Geeng Chen
- Department of Microbiology, Immunology and Biopharmaceuticals, College of Life Sciences, National Chiayi University, 300 Syuefu Rd., Chiayi City 60004, Taiwan.
| | - Ying-Jang Lai
- Department of Food Science, National Quemoy University, 1 Daxue Rd., Jinning Township, Kinmen County 89250, Taiwan.
| | - Wei-Shun Chang
- Department of Microbiology, Immunology and Biopharmaceuticals, College of Life Sciences, National Chiayi University, 300 Syuefu Rd., Chiayi City 60004, Taiwan.
| | - Hsin-Ching Sung
- Department of Anatomy, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan Township, Taoyuan County 33302, Taiwan.
| | - Ching-Chiung Wang
- Orthopedics Research Center, Taipei Medical University Hospital, 252 Wu-Hsing Street, Taipei City 11031, Taiwan; School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing Street, Taipei City 11031, Taiwan.
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Low rates of bone mineral density measurement in Medicare beneficiaries with prostate cancer initiating androgen deprivation therapy. Support Care Cancer 2013; 22:537-44. [PMID: 24146343 DOI: 10.1007/s00520-013-2008-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 10/01/2013] [Indexed: 01/05/2023]
Abstract
BACKGROUND Men with prostate cancer who undergo androgen deprivation therapy (ADT) are at risk for bone loss and fractures. Our objective was to determine if Medicare beneficiaries with prostate cancer in the state of Texas underwent DXA scans when initiating ADT. METHODS We identified men diagnosed with prostate cancer between 2005 and 2007 in the Texas Cancer Registry/Medicare linked database, and who received parenteral ADT or orchiectomy. We identified DXA claims within 1 year before or 6 months after starting ADT. We examined use of bone conservation agents in the subgroup of patients enrolled in Medicare Part D. Multivariate logistic regression models were used to examine determinants of DXA use. RESULTS The analysis included 2,290 men (2,262 parenteral ADT, 28 orchiectomy); 197 (8.6 %) underwent DXA within 1 year before and 6 months after starting ADT. Men aged 75 years or older were more likely to undergo DXA than men aged 66-74 years (OR 1.5; 95 % CI 1.1-2.1). Those living in small urban areas were less likely to undergo DXA than those in big areas (OR 0.40; 95 % CI 0.19-0.82). Of the 1,060 men enrolled in Medicare part D, 59 (5.6 %) received bone conservation agents when starting ADT; 134 (12.6 %) either received bone conservation agents or underwent DXA. CONCLUSIONS Fewer than one in ten Medicare beneficiaries with prostate cancer initiating ADT underwent a DXA exam. Variation in utilization was also related to residence area size. Further research is needed to identify whether the use of DXA in patients with prostate cancer receiving ADT will result in fracture prevention.
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Abstract
Chronic consumption of a large amount of alcohol disrupts the communication between nervous, endocrine, and immune system and causes hormonal disturbances that lead to profound and serious consequences at physiologic and behavioral levels. These alcohol-induced hormonal dysregulations affect the entire body and can result in various disorders such as stress abnormalities, reproductive deficits, body growth defect, thyroid problems, immune dysfunction, cancers, bone disease, and psychological and behavioral disorders. This review summarizes the findings from human and animal studies that provide consistent evidence on the various effects of alcohol abuse on the endocrine system.
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Affiliation(s)
- Nadia Rachdaoui
- Nadia Rachdaoui, Ph.D., Rutgers Endocrine Research Program. Department of Animal Sciences Rutgers University, 67 Poultry Farm Lane, New Brunswick, NJ 08901,
| | - Dipak K. Sarkar
- Dipak K. Sarkar, Ph.D., D. Phil., Rutgers Endocrine Research Program. Department of Animal Sciences, Rutgers University, 67 Poultry Farm Lane, New Brunswick, NJ 08901,
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Hannemann A, Friedrich N, Spielhagen C, Rettig R, Ittermann T, Nauck M, Wallaschofski H. Reference intervals for serum osteocalcin concentrations in adult men and women from the study of health in Pomerania. BMC Endocr Disord 2013; 13:11. [PMID: 23497286 PMCID: PMC3606466 DOI: 10.1186/1472-6823-13-11] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 03/06/2013] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Osteocalcin (OC) is a bone-specific protein produced primarily by osteoblasts during bone formation. Besides its role in bone formation, osteocalcin may play a role in the regulation of energy metabolism and male fertility. To interpret serum OC data, reference intervals adapted to a specific laboratory method are needed. METHODS A healthy reference population was selected from the first follow-up of the Study of Health in Pomerania. Serum OC concentrations were measured with the IDS-iSYS N-Mid Osteocalcin assay on the IDS-iSYS Automated System (Immunodiagnostic Systems, Frankfurt am Main, Germany). The reference interval was defined as the central 95% range (2.5th-97.5th percentile). Age-specific reference intervals were calculated by quantile regression for 1107 men (25-79 years) and 545 premenopausal women (25-54 years). The reference interval for 498 postmenopausal women (50-79 years) was calculated irrespective of age. RESULTS Median (1st-3rd quartile) serum OC concentrations were 15.4 ng/mL (12.0-19.4 ng/mL) in men, 14.4 ng/mL (11.3-18.5 ng/mL) in premenopausal women, and 18.6 ng/mL (13.6-25.6 ng/mL) in postmenopausal women. Serum OC concentrations were highest in men and premenopausal women aged 25-29 years, were stable during midlife, and rose again after 65 years of age in men and at transition to menopause in women. Serum OC concentrations were lower in women taking oral contraceptives or who were under hormone replacement therapy after menopause and in subjects with diabetes mellitus or with body mass index < 18 or > 30 kg/m2 than in subjects without these conditions. CONCLUSIONS We established sex-specific adult reference intervals for the serum OC concentration measured by the IDS-iSYS N-Mid Osteocalcin assay.
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Affiliation(s)
- Anke Hannemann
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Nele Friedrich
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Christin Spielhagen
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Rainer Rettig
- Institute of Physiology, University Medicine Greifswald, Greifswald-Karlsburg, Germany
| | - Till Ittermann
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Matthias Nauck
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Henri Wallaschofski
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
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Tseng SH, Sung HC, Chen LG, Lai YJ, Wang KT, Sung CH, Wang CC. Effects of velvet antler with blood on bone in ovariectomized rats. Molecules 2012; 17:10574-85. [PMID: 22951396 PMCID: PMC6268457 DOI: 10.3390/molecules170910574] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 08/28/2012] [Accepted: 09/03/2012] [Indexed: 11/16/2022] Open
Abstract
In traditional Chinese medicine (TCM), both velvet antlers (VA) and VA blood can tonify qi, essence, and marrow, nourish the blood, and invigorate bones and tendons. In TCM, the combination of VA and VA blood is believed to have superior pharmacological effects. Scientific evidence supporting the traditional therapeutic preference for redder antler is needed. The effectiveness of the combination therapy of VA middle sections (VAMs) and VA blood (VAM-B) was first examined in promoting proliferation of mouse osteoblastic cells (MC3T3-E1). The anti-osteoporotic activity of VAM-B (ratio of VAM:VA blood = 1:0.2) was evaluated with ovariectomized (OVX) rats at a dose of 0.2 g/kg. In VAM-B-treated OVX rats, the body weight decreased 10.7%, and the strength of vertebrae and the femur respectively increased 18.1% and 15.4%, compared to the control. VAM-B treatment also recovered the estrogen-related loss of the right tibial trabecular bone microarchitecture. Alkaline phosphatase (ALP) significantly decreased, but estradiol did not significantly change in serum of VAM-B-treated OVX rats. We also provide an effective strategy to enhance the anti-osteoporotic activity of VAM. In conclusion, our results provide scientific evidence supporting the traditional therapeutic preference of redder antler and indicate that VAM-B is a potential therapeutic agent for managing osteoporosis.
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Affiliation(s)
- Sung-Hui Tseng
- School of Medicine, College of Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei City 11031, Taiwan;
- Orthopedics Research Center, Taipei Medical University Hospital, 252 Wu-Hsing Street, Taipei City 11031, Taiwan
| | - Hsin-Ching Sung
- Department of Anatomy, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan Township, Taoyuan County 33302, Taiwan;
| | - Lih-Geeng Chen
- Department of Microbiology, Immunology and Biopharmaceuticals, College of Life Sciences, National Chiayi University, No. 300 Syuefu Rd., Chiayi City 60004, Taiwan;
| | - Ying-Jang Lai
- Department of Food Science, National Quemoy University, No.1, Daxue Rd., Jinning Township, Kinmen County 89250, Taiwan;
| | - Kun-Teng Wang
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing Street, Taipei City 11031, Taiwan;
| | - Chun-Hsien Sung
- Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing Street, Taipei City 11031, Taiwan;
| | - Ching-Chiung Wang
- Orthopedics Research Center, Taipei Medical University Hospital, 252 Wu-Hsing Street, Taipei City 11031, Taiwan
- School of Pharmacy, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing Street, Taipei City 11031, Taiwan;
- Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, 250 Wu-Hsing Street, Taipei City 11031, Taiwan;
- Author to whom correspondence should be addressed; ; Tel.: +886-2-2736-1661 (ext. 6161); Fax: +886-2-2732-9368
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