1
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Yadav S, Sapra L, Srivastava RK. Polysaccharides to postbiotics: Nurturing bone health via modulating "gut-immune axis". Int J Biol Macromol 2024; 278:134655. [PMID: 39128750 DOI: 10.1016/j.ijbiomac.2024.134655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 08/06/2024] [Accepted: 08/08/2024] [Indexed: 08/13/2024]
Abstract
The increasing prevalence of individuals affected by bone pathologies globally has sparked catastrophic concerns. Ankylosing spondylitis, osteoporosis, rheumatoid arthritis, osteoarthritis, and fractures alone impact an estimated 1.71 billion people worldwide. The gut microbiota plays a crucial role in interacting with the host through the synthesis of a diverse range of metabolites called gut-associated metabolites (GAMs), which originate from external dietary substrates or endogenous host compounds. Many metabolic disorders have been linked to alterations in the gut microbiota's activity and composition. The development of metabolic illnesses has been linked to certain microbiota-derived metabolites, such as branched-chain amino acids, bile acids, short-chain fatty acids, tryptophan, trimethylamine N-oxide, and indole derivatives. Moreover, the modulation of gut microbiota through biotics (prebiotics, probiotics and postbiotics) presents a promising avenue for therapeutic intervention. Biotics selectively promote the growth of beneficial gut bacteria, thereby enhancing the production of GAMs with potential beneficial effects on bone metabolism. Understanding the intricate interplay between GAMs, and bone-associated genes through molecular informatics holds significant promise for early diagnosis, prognosis, and novel treatment strategies for various bone disorders.
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Affiliation(s)
- Sumedha Yadav
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Leena Sapra
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India
| | - Rupesh K Srivastava
- Translational Immunology, Osteoimmunology & Immunoporosis Lab (TIOIL), Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi 110029, India.
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2
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Dong Y, Yuan H, Ma G, Cao H. Bone-muscle crosstalk under physiological and pathological conditions. Cell Mol Life Sci 2024; 81:310. [PMID: 39066929 PMCID: PMC11335237 DOI: 10.1007/s00018-024-05331-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 06/20/2024] [Accepted: 06/21/2024] [Indexed: 07/30/2024]
Abstract
Anatomically connected bones and muscles determine movement of the body. Forces exerted on muscles are then turned to bones to promote osteogenesis. The crosstalk between muscle and bone has been identified as mechanotransduction previously. In addition to the mechanical features, bones and muscles are also secretory organs which interact closely with one another through producing myokines and osteokines. Moreover, besides the mechanical features, other factors, such as nutrition metabolism, physiological rhythm, age, etc., also affect bone-muscle crosstalk. What's more, osteogenesis and myogenesis within motor system occur almost in parallel. Pathologically, defective muscles are always detected in bone associated diseases and induce the osteopenia, inflammation and abnormal bone metabolism, etc., through biomechanical or biochemical coupling. Hence, we summarize the study findings of bone-muscle crosstalk and propose potential strategies to improve the skeletal or muscular symptoms of certain diseases. Altogether, functional improvement of bones or muscles is beneficial to each other within motor system.
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Affiliation(s)
- Yuechao Dong
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Hongyan Yuan
- Shenzhen Key Laboratory of Soft Mechanics & Smart Manufacturing, Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Guixing Ma
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Huiling Cao
- Department of Biochemistry, School of Medicine, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Key University Laboratory of Metabolism and Health of Guangdong, Southern University of Science and Technology, Southern University of Science and Technology, Shenzhen, 518055, China.
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3
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Li Z, Cheng W, Gao K, Liang S, Ke L, Wang M, Fan J, Li D, Zhang P, Xu Z, Li N. Pyroptosis: A spoiler of peaceful coexistence between cells in degenerative bone and joint diseases. J Adv Res 2024:S2090-1232(24)00247-9. [PMID: 38876191 DOI: 10.1016/j.jare.2024.06.010] [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: 02/17/2024] [Revised: 05/23/2024] [Accepted: 06/07/2024] [Indexed: 06/16/2024] Open
Abstract
BACKGROUND As people age, degenerative bone and joint diseases (DBJDs) become more prevalent. When middle-aged and elderly people are diagnosed with one or more disorders such as osteoporosis (OP), osteoarthritis (OA), and intervertebral disc degeneration (IVDD), it often signals the onset of prolonged pain and reduced functionality. Chronic inflammation has been identified as the underlying cause of various degenerative diseases, including DBJDs. Recently, excessive activation of pyroptosis, a form of programed cell death (PCD) mediated by inflammasomes, has emerged as a primary driver of harmful chronic inflammation. Consequently, pyroptosis has become a potential target for preventing and treating DBJDs. AIM OF REVIEW This review explored the physiological and pathological roles of the pyroptosis pathway in bone and joint development and its relation to DBJDs. Meanwhile, it elaborated the molecular mechanisms of pyroptosis within individual cell types in the bone marrow and joints, as well as the interplay among different cell types in the context of DBJDs. Furthermore, this review presented the latest compelling evidence supporting the idea of regulating the pyroptosis pathway for DBJDs treatment, and discussed the potential, limitations, and challenges of various therapeutic strategies involving pyroptosis regulation. KEY SCIENTIFIC CONCEPTS OF REVIEW In summary, an interesting identity for the unregulated pyroptosis pathway in the context of DBJDs was proposed in this review, which was undertaken as a spoiler of peaceful coexistence between cells in a degenerative environment. Over the extended course of DBJDs, pyroptosis pathway perpetuated its activity through crosstalk among pyroptosis cascades in different cell types, thus exacerbating the inflammatory environment throughout the entire bone marrow and joint degeneration environment. Correspondingly, pyroptosis regulation therapy emerged as a promising option for clinical treatment of DBJDs.
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Affiliation(s)
- Zhichao Li
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China; Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, China; Center for Translational Medicine Research and Development, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Wenxiang Cheng
- Center for Translational Medicine Research and Development, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Kuanhui Gao
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Songlin Liang
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China; Center for Translational Medicine Research and Development, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Liqing Ke
- Center for Translational Medicine Research and Development, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Mengjie Wang
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Jilin Fan
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Dandan Li
- College of Integrated Traditional Chinese and Western Medicine, Hebei University of Chinese Medicine, Shijiazhuang 050011, China
| | - Peng Zhang
- Center for Translational Medicine Research and Development, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China; Faculty of Biomedical Engineering, Shenzhen University of Advanced Technology, Shenzhen 518000, China; Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, 518000 China; Shandong Zhongke Advanced Technology Co., Ltd., Jinan, 250300 China.
| | - Zhanwang Xu
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China; Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, China.
| | - Nianhu Li
- First College of Clinical Medicine, Shandong University of Traditional Chinese Medicine, Jinan 250014, China; Department of Orthopedics, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, China.
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4
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Shao M, Wang Q, Lv Q, Zhang Y, Gao G, Lu S. Advances in the research on myokine-driven regulation of bone metabolism. Heliyon 2024; 10:e22547. [PMID: 38226270 PMCID: PMC10788812 DOI: 10.1016/j.heliyon.2023.e22547] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 11/14/2023] [Accepted: 11/14/2023] [Indexed: 01/17/2024] Open
Abstract
The traditional view posits that bones and muscles interact primarily through mechanical coupling. However, recent studies have revealed that myokines, proteins secreted by skeletal muscle cells, play a crucial role in the regulation of bone metabolism. Myokines are widely involved in bone metabolism, influencing bone resorption and formation by interacting with factors related to bone cell secretion or influencing bone metabolic pathways. Here, we review the research progress on the myokine regulation of bone metabolism, discuss the mechanism of myokine regulation of bone metabolism, explore the pathophysiological relationship between sarcopenia and osteoporosis, and provide future perspectives on myokine research, with the aim of identify potential specific diagnostic markers and therapeutic entry points.
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Affiliation(s)
- MingHong Shao
- Department of Orthopedic Surgery, the Key Laboratory of Digital Orthopaedics of Yunnan Provincial, the First People's Hospital of Yunnan Province, the Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - QiYang Wang
- Department of Orthopedic Surgery, the Key Laboratory of Digital Orthopaedics of Yunnan Provincial, the First People's Hospital of Yunnan Province, the Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - QiuNan Lv
- Department of Orthopedic Surgery, the Key Laboratory of Digital Orthopaedics of Yunnan Provincial, the First People's Hospital of Yunnan Province, the Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - YuQiong Zhang
- Department of Orthopedic Surgery, the Key Laboratory of Digital Orthopaedics of Yunnan Provincial, the First People's Hospital of Yunnan Province, the Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - GuoXi Gao
- Department of Orthopedic Surgery, the Key Laboratory of Digital Orthopaedics of Yunnan Provincial, the First People's Hospital of Yunnan Province, the Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Sheng Lu
- Department of Orthopedic Surgery, the Key Laboratory of Digital Orthopaedics of Yunnan Provincial, the First People's Hospital of Yunnan Province, the Affiliated Hospital of Kunming University of Science and Technology, Kunming, Yunnan, China
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5
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Khandelwal S, Lane NE. Osteoporosis: Review of Etiology, Mechanisms, and Approach to Management in the Aging Population. Endocrinol Metab Clin North Am 2023; 52:259-275. [PMID: 36948779 DOI: 10.1016/j.ecl.2022.10.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
Osteoporosis is the most common metabolic bone disease. With special respect to the aging population, it is very common, not only due to changes in lifestyle and diet but as a result of the aging process there is low-grade inflammation and immune system activation that directly affects bone strength and quality. This article provides a review of the incidence, etiology, and approach to screening and management of osteoporosis in the aging population. A thorough screening of lifestyle, environmental, and clinical conditions will be reviewed which identifies appropriate candidates for screening and treatment.
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Affiliation(s)
- Sonali Khandelwal
- Rush University Medical Center, 1611 West Harrison Suite 510, Chicago, IL 60612, USA.
| | - Nancy E Lane
- University of California at Davis School of Medicine
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6
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Wang H, Luo Y, Wang H, Li F, Yu F, Ye L. Mechanistic advances in osteoporosis and anti-osteoporosis therapies. MedComm (Beijing) 2023; 4:e244. [PMID: 37188325 PMCID: PMC10175743 DOI: 10.1002/mco2.244] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/15/2023] [Accepted: 03/06/2023] [Indexed: 05/17/2023] Open
Abstract
Osteoporosis is a type of bone loss disease characterized by a reduction in bone mass and microarchitectural deterioration of bone tissue. With the intensification of global aging, this disease is now regarded as one of the major public health problems that often leads to unbearable pain, risk of bone fractures, and even death, causing an enormous burden at both the human and socioeconomic layers. Classic anti-osteoporosis pharmacological options include anti-resorptive and anabolic agents, whose ability to improve bone mineral density and resist bone fracture is being gradually confirmed. However, long-term or high-frequency use of these drugs may bring some side effects and adverse reactions. Therefore, an increasing number of studies are devoted to finding new pathogenesis or potential therapeutic targets of osteoporosis, and it is of great importance to comprehensively recognize osteoporosis and develop viable and efficient therapeutic approaches. In this study, we systematically reviewed literatures and clinical evidences to both mechanistically and clinically demonstrate the state-of-art advances in osteoporosis. This work will endow readers with the mechanistical advances and clinical knowledge of osteoporosis and furthermore present the most updated anti-osteoporosis therapies.
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Affiliation(s)
- Haiwei Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
- Department of EndodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Yuchuan Luo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
- Department of EndodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Haisheng Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Feifei Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Fanyuan Yu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
- Department of EndodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
| | - Ling Ye
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral DiseasesWest China Hospital of StomatologySichuan UniversityChengduChina
- Department of EndodonticsWest China Hospital of StomatologySichuan UniversityChengduChina
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Grčević D, Sanjay A, Lorenzo J. Interactions of B-lymphocytes and bone cells in health and disease. Bone 2023; 168:116296. [PMID: 34942359 PMCID: PMC9936888 DOI: 10.1016/j.bone.2021.116296] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 02/09/2023]
Abstract
Bone remodeling occurs through the interactions of three major cell lineages, osteoblasts, which mediate bone formation, osteocytes, which derive from osteoblasts, sense mechanical force and direct bone turnover, and osteoclasts, which mediate bone resorption. However, multiple additional cell types within the bone marrow, including macrophages, T lymphocytes and B lymphocytes influence the process. The bone marrow microenvironment, which is supported, in part, by bone cells, forms a nurturing network for B lymphopoiesis. In turn, developing B lymphocytes influence bone cells. Bone health during homeostasis depends on the normal interactions of bone cells with other lineages in the bone marrow. In disease state these interactions become pathologic and can cause abnormal function of bone cells and inadequate repair of bone after a fracture. This review summarizes what is known about the development of B lymphocytes and the interactions of B lymphocytes with bone cells in both health and disease.
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Affiliation(s)
- Danka Grčević
- Department of Physiology and Immunology, Croatian Institute for Brain Research, School of Medicine University of Zagreb, Zagreb, Croatia.
| | - Archana Sanjay
- Department of Orthopaedics, UConn Health, Farmington, CT, USA.
| | - Joseph Lorenzo
- Departments of Medicine and Orthopaedics, UConn Health, Farmington, CT, USA.
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8
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The Local Release of Teriparatide Incorporated in 45S5 Bioglass Promotes a Beneficial Effect on Osteogenic Cells and Bone Repair in Calvarial Defects in Ovariectomized Rats. J Funct Biomater 2023; 14:jfb14020093. [PMID: 36826892 PMCID: PMC9964758 DOI: 10.3390/jfb14020093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 01/24/2023] [Accepted: 02/01/2023] [Indexed: 02/11/2023] Open
Abstract
With the increase in the population's life expectancy, there has also been an increase in the rate of osteoporosis, which has expanded the search for strategies to regenerate bone tissue. The ultrasonic sonochemical technique was chosen for the functionalization of the 45S5 bioglass. The samples after the sonochemical process were divided into (a) functionalized bioglass (BG) and (b) functionalized bioglass with 10% teriparatide (BGT). Isolated mesenchymal cells (hMSC) from femurs of ovariectomized rats were differentiated into osteoblasts and submitted to in vitro tests. Bilateral ovariectomy (OVX) and sham ovariectomy (Sham) surgeries were performed in fifty-five female Wistar rats. After a period of 60 days, critical bone defects of 5.0 mm were created in the calvaria of these animals. For biomechanical evaluation, critical bone defects of 3.0 mm were performed in the tibias of some of these rats. The groups were divided into the clot (control) group, the BG group, and the BGT group. After the sonochemical process, the samples showed modified chemical topographic and morphological characteristics, indicating that the surface was chemically altered by the functionalization of the particles. The cell environment was conducive to cell adhesion and differentiation, and the BG and BGT groups did not show cytotoxicity. In addition, the experimental groups exhibited characteristics of new bone formation with the presence of bone tissue in both periods, with the BGT group and the OVX group statistically differing from the other groups (p < 0.05) in both periods. Local treatment with the drug teriparatide in ovariectomized animals promoted positive effects on bone tissue, and longitudinal studies should be carried out to provide additional information on the biological performance of the mutual action between the bioglass and the release of the drug teriparatide.
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9
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高山 賢. [Recent advances in the sex steroid hormone action involved in the development of dementia and frailty]. Nihon Ronen Igakkai Zasshi 2022; 59:430-445. [PMID: 36476689 DOI: 10.3143/geriatrics.59.430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- 賢一 高山
- 東京都健康長寿医療センター研究所老化機構研究チームシステム加齢医学
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10
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Characterization of peripheral T helper 17 (Th17) cells phenotype in postmenopausal women with estrogen insufficiency. Blood Cells Mol Dis 2022; 98:102702. [DOI: 10.1016/j.bcmd.2022.102702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 08/24/2022] [Accepted: 08/30/2022] [Indexed: 11/20/2022]
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11
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Gianella S, Rawlings SA, Dobrowolski C, Nakazawa M, Chaillon A, Strain M, Layman L, Caballero G, Scully E, Scott B, Pacis C, Weber KM, Landay A, Anderson C, Karn J. Sex Differences in Human Immunodeficiency Virus Persistence and Reservoir Size During Aging. Clin Infect Dis 2022; 75:73-80. [PMID: 34612493 PMCID: PMC9402699 DOI: 10.1093/cid/ciab873] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Sex differences in human immunodeficiency virus (HIV) reservoir dynamics remain underexplored. METHODS Longitudinal samples from virally suppressed midlife women (n = 59, median age 45 years) and age-matched men (n = 31) were analyzed retrospectively. At each time point, we measured sex hormones (by means of enzyme-linked immunosorbent assay) and cellular HIV DNA and RNA (by means of digital droplet polymerase chain reaction). Number of inducible HIV RNA+ cells, which provides an upper estimate of the replication-competent reservoir, was quantified longitudinally in a different subset of 14 women, across well-defined reproductive stages. Mixed-effects models included normalized reservoir outcomes and sex, time since antiretroviral therapy (ART) initiation, and the sex-by-time interaction as predictors. RESULTS At ART initiation, women and men had median (interquartile range [IQR]) CD4+ T-cell counts of 204/μL (83-306/μL) versus 238/μL (120-284/μL), respectively; median ages of 45 (42-48) versus 47 (43-51) years; and median follow-up times of 79.2/μL (60.5-121.1/μL) versus 66.2/μL (43.2-80.6/μL) months. We observed a significant decline of total HIV DNA over time in both men and women (P < .01). However, the rates of change differed significantly between the sexes (P < .01), with women having a significantly slower rate of decline than men, more pronounced with age. By contrast, the levels of inducible HIV RNA increased incrementally over time in women during reproductive aging (P < .01). CONCLUSIONS In contrast to men, in whom the HIV reservoir steadily declines with aging, the HIV reservoir in women is more dynamic. Total HIV DNA (including intact and defective genomes) declines more slowly in women than in men, while the inducible HIV RNA+ reservoir, which is highly enriched in replication-competent virus, increases in women after menopause.
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Affiliation(s)
- Sara Gianella
- University of California San Diego, La Jolla, California, USA
| | | | - Curtis Dobrowolski
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory School of Medicine, Atlanta, Georgia, USA
| | - Masato Nakazawa
- University of California San Diego, La Jolla, California, USA
| | | | - Matthew Strain
- University of California San Diego, La Jolla, California, USA
| | - Laura Layman
- University of California San Diego, La Jolla, California, USA
| | - Gemma Caballero
- University of California San Diego, La Jolla, California, USA
| | | | - Brianna Scott
- University of California San Diego, La Jolla, California, USA
| | - Caitleen Pacis
- University of California San Diego, La Jolla, California, USA
| | - Kathleen M Weber
- Hektoen Institute of Medicine/Cook County Health, Chicago, Illinois, USA
| | - Alan Landay
- Rush University Medical Center, Chicago, Illinois, USAand
| | | | - Jonathan Karn
- Case Western Reserve University, Cleveland, Ohio, USA
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12
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Biason-Lauber A, Lang-Muritano M. Estrogens: Two nuclear receptors, multiple possibilities. Mol Cell Endocrinol 2022; 554:111710. [PMID: 35787463 DOI: 10.1016/j.mce.2022.111710] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 11/29/2022]
Abstract
Much is known about estrogen action in experimental animal models and in human physiology. This article reviews the mechanisms of estrogen activity in animals and humans and the role of its two receptors α and β in terms of structure and mechanisms of action in various tissues in health and in relationship with human pathologies (e.g., osteoporosis). Recently, the spectrum of clinical pictures of estrogen resistance caused by estrogen receptors gene variants has been widened by our description of a woman with β-receptor defect, which could be added to the already known descriptions of α-receptor defect in women and men and β-receptor defect in men. The essential role of the β-receptor in the development of the gonad stands out. We summarize the clinical pictures due to estrogen resistance in men and women and focus on long-term follow-up of two women, one with α- and the other with β-receptor resistance. Some open questions remain on the complex interactions between the two receptors on bone metabolism and hypothalamus-pituitary-gonadal axis, which need further deepening and research.
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Affiliation(s)
- Anna Biason-Lauber
- University of Fribourg, Division of Endocrinology, Chemin du Musée 5, 1700, Fribourg, Switzerland.
| | - Mariarosaria Lang-Muritano
- Division of Pediatric Endocrinology and Diabetology, Switzerland; Children's Research Center, University Children's Hospital, Steinwiesstrasse 75, 8032, Zurich, Switzerland
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13
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Bernstein ZS, Kim EB, Raje N. Bone Disease in Multiple Myeloma: Biologic and Clinical Implications. Cells 2022; 11:cells11152308. [PMID: 35954151 PMCID: PMC9367243 DOI: 10.3390/cells11152308] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/13/2022] [Accepted: 07/21/2022] [Indexed: 02/01/2023] Open
Abstract
Multiple Myeloma (MM) is a hematologic malignancy characterized by the proliferation of monoclonal plasma cells localized within the bone marrow. Bone disease with associated osteolytic lesions is a hallmark of MM and develops in the majority of MM patients. Approximately half of patients with bone disease will experience skeletal-related events (SREs), such as spinal cord compression and pathologic fractures, which increase the risk of mortality by 20–40%. At the cellular level, bone disease results from a tumor-cell-driven imbalance between osteoclast bone resorption and osteoblast bone formation, thereby creating a favorable cellular environment for bone resorption. The use of osteoclast inhibitory therapies with bisphosphonates, such as zoledronic acid and the RANKL inhibitor denosumab, have been shown to delay and lower the risk of SREs, as well as the need for surgery or radiation therapy to treat severe bone complications. This review outlines our current understanding of the molecular underpinnings of bone disease, available therapeutic options, and highlights recent advances in the management of MM-related bone disease.
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Affiliation(s)
- Zachary S. Bernstein
- Center for Multiple Myeloma, Massachusetts General Hospital Cancer Center, Boston, MA 02114, USA;
| | - E. Bridget Kim
- Department of Pharmacy, Massachusetts General Hospital, Boston, MA 02114, USA;
| | - Noopur Raje
- Center for Multiple Myeloma, Massachusetts General Hospital Cancer Center, Boston, MA 02114, USA;
- Harvard Medical School, Boston, MA 02115, USA
- Correspondence:
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14
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Meyer A, Parmar PJ, Shahrara S. Significance of IL-7 and IL-7R in RA and autoimmunity. Autoimmun Rev 2022; 21:103120. [PMID: 35595051 PMCID: PMC9987213 DOI: 10.1016/j.autrev.2022.103120] [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] [Received: 04/20/2022] [Accepted: 05/15/2022] [Indexed: 11/02/2022]
Abstract
While physiological levels of IL-7 are essential for T cell proliferation, survival and co-stimulation, its escalated concentration has been associated with autoimmune diseases such as Rheumatoid arthritis (RA). Expression of IL-7 and IL-7R in RA monocytes is linked to disease activity score and TNF transcription. TNF stimulation can modulate IL-7 secretion and IL-7R frequency in myeloid cells, however, only IL-7R transcription levels are downregulated in anti-TNF responsive patients. Elevated levels of IL-7 in RA synovial tissue and fluid are involved in attracting RA monocytes into the inflammatory joints and remodeling them into proinflammatory macrophages and mature osteoclasts. Further, IL-7 amplification of RA Th1 cell differentiation and IFNγ secretion, can directly prime myeloid IL-7R expression and thereby exacerbate IL-7-mediated joint inflammatory and erosive imprints. In parallel, IL-7 accentuates joint angiogenesis by expanding the production of proangiogenic factors from RA macrophages and endothelial cells. In preclinical models, blockade of IL-7 or IL-7R can effectively impair joint inflammation, osteoclast formation, and neovascularization primarily by impeding monocyte and endothelial cell infiltration as well as inhibition of pro-inflammatory macrophage and Th1/Th17 cell differentiation. In conclusion, disruption of IL-7/IL-7R signaling can uniquely intercept the crosstalk between RA myeloid and lymphoid cells in their ability to trigger neovascularization.
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Affiliation(s)
- Anja Meyer
- Jesse Brown VA Medical Center, Chicago, IL, USA; Department of Medicine, Division of Rheumatology, the University of Illinois at Chicago, IL, USA
| | - Prashant J Parmar
- Department of Medicine, Division of Rheumatology, the University of Illinois at Chicago, IL, USA
| | - Shiva Shahrara
- Jesse Brown VA Medical Center, Chicago, IL, USA; Department of Medicine, Division of Rheumatology, the University of Illinois at Chicago, IL, USA.
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15
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Chow LS, Gerszten RE, Taylor JM, Pedersen BK, van Praag H, Trappe S, Febbraio MA, Galis ZS, Gao Y, Haus JM, Lanza IR, Lavie CJ, Lee CH, Lucia A, Moro C, Pandey A, Robbins JM, Stanford KI, Thackray AE, Villeda S, Watt MJ, Xia A, Zierath JR, Goodpaster BH, Snyder MP. Exerkines in health, resilience and disease. Nat Rev Endocrinol 2022; 18:273-289. [PMID: 35304603 PMCID: PMC9554896 DOI: 10.1038/s41574-022-00641-2] [Citation(s) in RCA: 322] [Impact Index Per Article: 161.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/27/2022] [Indexed: 12/16/2022]
Abstract
The health benefits of exercise are well-recognized and are observed across multiple organ systems. These beneficial effects enhance overall resilience, healthspan and longevity. The molecular mechanisms that underlie the beneficial effects of exercise, however, remain poorly understood. Since the discovery in 2000 that muscle contraction releases IL-6, the number of exercise-associated signalling molecules that have been identified has multiplied. Exerkines are defined as signalling moieties released in response to acute and/or chronic exercise, which exert their effects through endocrine, paracrine and/or autocrine pathways. A multitude of organs, cells and tissues release these factors, including skeletal muscle (myokines), the heart (cardiokines), liver (hepatokines), white adipose tissue (adipokines), brown adipose tissue (baptokines) and neurons (neurokines). Exerkines have potential roles in improving cardiovascular, metabolic, immune and neurological health. As such, exerkines have potential for the treatment of cardiovascular disease, type 2 diabetes mellitus and obesity, and possibly in the facilitation of healthy ageing. This Review summarizes the importance and current state of exerkine research, prevailing challenges and future directions.
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Affiliation(s)
- Lisa S Chow
- Division of Diabetes Endocrinology and Metabolism, University of Minnesota, Minneapolis, MN, USA.
| | - Robert E Gerszten
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Joan M Taylor
- Department of Pathology, McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA
| | - Bente K Pedersen
- Centre of Inflammation and Metabolism/Centre for PA Research (CIM/CFAS), Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Henriette van Praag
- Stiles-Nicholson Brain institute and Charles E. Schmidt College of Medicine, Florida Atlantic University, Jupiter, FL, USA
| | - Scott Trappe
- Human Performance Laboratory, Ball State University, Muncie, IN, USA
| | - Mark A Febbraio
- Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Zorina S Galis
- Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Yunling Gao
- Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jacob M Haus
- School of Kinesiology, University of Michigan, Ann Arbor, MI, USA
| | - Ian R Lanza
- Division of Endocrinology, Nutrition, and Metabolism, Mayo Clinic College of Medicine and Science, Rochester, MN, USA
| | - Carl J Lavie
- Division of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute, Ochsner Clinical School-the University of Queensland School of Medicine, New Orleans, LA, USA
| | - Chih-Hao Lee
- Department of Molecular Metabolism, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Alejandro Lucia
- Faculty of Sport Sciences, Universidad Europea de Madrid, Madrid, Spain
- Research Institute Hospital 12 de Octubre ('imas12'), Madrid, Spain
- CIBER en Fragilidad y Envejecimiento Saludable (CIBERFES), Madrid, Spain
| | - Cedric Moro
- Institute of Metabolic and Cardiovascular Diseases, Team MetaDiab, Inserm UMR1297, Toulouse, France
- Toulouse III University-Paul Sabatier (UPS), Toulouse, France
| | - Ambarish Pandey
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA
| | - Jeremy M Robbins
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Kristin I Stanford
- Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University College of Medicine, Columbus, OH, USA
| | - Alice E Thackray
- National Centre for Sport and Exercise Medicine, School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | - Saul Villeda
- Department of Anatomy, University of California San Francisco, San Francisco, CA, USA
| | - Matthew J Watt
- Department of Anatomy and Physiology, School of Biomedical Sciences, The University of Melbourne, Victoria, Australia
| | - Ashley Xia
- Division of Diabetes, Endocrinology, & Metabolic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Juleen R Zierath
- Department of Molecular Medicine and Surgery, Section for Integrative Physiology, Karolinska Institutet, Stockholm, Sweden
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - Michael P Snyder
- Department of Genetics, Stanford School of Medicine, Stanford, CA, USA.
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16
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Mkhikian H, Hayama KL, Khachikyan K, Li C, Zhou RW, Pawling J, Klaus S, Tran PQN, Ly KM, Gong AD, Saryan H, Hai JL, Grigoryan D, Lee PL, Newton BL, Raffatellu M, Dennis JW, Demetriou M. Age-associated impairment of T cell immunity is linked to sex-dimorphic elevation of N-glycan branching. NATURE AGING 2022; 2:231-242. [PMID: 35528547 PMCID: PMC9075523 DOI: 10.1038/s43587-022-00187-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 02/02/2022] [Indexed: 11/08/2022]
Abstract
Impaired T cell immunity with aging increases mortality from infectious disease. The branching of Asparagine-linked glycans is a critical negative regulator of T cell immunity. Here we show that branching increases with age in females more than males, in naïve more than memory T cells, and in CD4+ more than CD8+ T cells. Female sex hormones and thymic output of naïve T cells (TN) decrease with age, however neither thymectomy nor ovariectomy altered branching. Interleukin-7 (IL-7) signaling was increased in old female more than male mouse TN cells, and triggered increased branching. N-acetylglucosamine, a rate-limiting metabolite for branching, increased with age in humans and synergized with IL-7 to raise branching. Reversing elevated branching rejuvenated T cell function and reduced severity of Salmonella infection in old female mice. These data suggest sex-dimorphic antagonistic pleiotropy, where IL-7 initially benefits immunity through TN maintenance but inhibits TN function by raising branching synergistically with age-dependent increases in N-acetylglucosamine.
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Affiliation(s)
- Haik Mkhikian
- Department of Pathology and Laboratory Medicine, University of California, Irvine, Irvine, CA, USA
| | - Ken L Hayama
- Department of Microbiology and Molecular Genetics, University of California, Irvine, Irvine, CA, USA
| | - Khachik Khachikyan
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Carey Li
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Raymond W Zhou
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Judy Pawling
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Suzi Klaus
- Department of Microbiology and Molecular Genetics, University of California, Irvine, Irvine, CA, USA
| | - Phuong Q N Tran
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Kim M Ly
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Andrew D Gong
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Hayk Saryan
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Jasper L Hai
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - David Grigoryan
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Philip L Lee
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Barbara L Newton
- Department of Neurology, University of California, Irvine, Irvine, CA, USA
| | - Manuela Raffatellu
- Department of Microbiology and Molecular Genetics, University of California, Irvine, Irvine, CA, USA
- Division of Host-Microbe Systems and Therapeutics, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
- Center for Mucosal Immunology, Allergy, and Vaccines, Chiba University-UC San Diego, La Jolla, CA, USA
| | - James W Dennis
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Michael Demetriou
- Department of Microbiology and Molecular Genetics, University of California, Irvine, Irvine, CA, USA.
- Department of Neurology, University of California, Irvine, Irvine, CA, USA.
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17
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Ko KR, Lee H, Han SH, Ahn W, Kim DK, Kim IS, Jung BS, Lee S. Substance P, A Promising Therapeutic Target in Musculoskeletal Disorders. Int J Mol Sci 2022; 23:ijms23052583. [PMID: 35269726 PMCID: PMC8910130 DOI: 10.3390/ijms23052583] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/20/2022] [Accepted: 02/23/2022] [Indexed: 02/04/2023] Open
Abstract
A large number of studies have focused on the role of substance P (SP) and the neurokinin-1 receptor (NK1R) in the pathogenesis of a variety of medical conditions. This review provides an overview of the role of the SP-NK1R pathway in the pathogenesis of musculoskeletal disorders and the evidence for its role as a therapeutic target for these disorders, which are major public health problems in most countries. To summarize, the brief involvement of SP may affect tendon healing in an acute injury setting. SP combined with an adequate conjugate can be a regenerative therapeutic option in osteoarthritis. The NK1R antagonist is a promising agent for tendinopathy, rheumatoid arthritis, and osteoarthritis. Research on the SP-NK1R pathway will be helpful for developing novel drugs for osteoporosis.
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Affiliation(s)
- Kyung Rae Ko
- Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea; (K.R.K.); (I.-S.K.)
| | - Hyunil Lee
- Department of Orthopedic Surgery, Ilsan Paik Hospital, Inje University, 170 Juhwa-ro, Ilsanseo-gu, Goyang-si 10380, Gyeonggi-do, Korea;
| | - Soo-Hong Han
- Department of Orthopedic Surgery, CHA Bundang Medical Center, CHA University School of Medicine, 335 Pangyo-ro, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Korea; (S.-H.H.); (W.A.); (D.K.K.)
| | - Wooyeol Ahn
- Department of Orthopedic Surgery, CHA Bundang Medical Center, CHA University School of Medicine, 335 Pangyo-ro, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Korea; (S.-H.H.); (W.A.); (D.K.K.)
| | - Do Kyung Kim
- Department of Orthopedic Surgery, CHA Bundang Medical Center, CHA University School of Medicine, 335 Pangyo-ro, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Korea; (S.-H.H.); (W.A.); (D.K.K.)
| | - Il-Su Kim
- Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea; (K.R.K.); (I.-S.K.)
| | - Bo Sung Jung
- Department of Orthopedic Surgery, CHA Bundang Medical Center, CHA University School of Medicine, 335 Pangyo-ro, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Korea; (S.-H.H.); (W.A.); (D.K.K.)
- Correspondence: (B.S.J.); (S.L.); Tel.: +82-31-780-5289 (B.S.J. & S.L.); Fax: +82-31-881-7114 (B.S.J. & S.L.)
| | - Soonchul Lee
- Department of Orthopedic Surgery, CHA Bundang Medical Center, CHA University School of Medicine, 335 Pangyo-ro, Bundang-gu, Seongnam-si 13488, Gyeonggi-do, Korea; (S.-H.H.); (W.A.); (D.K.K.)
- Correspondence: (B.S.J.); (S.L.); Tel.: +82-31-780-5289 (B.S.J. & S.L.); Fax: +82-31-881-7114 (B.S.J. & S.L.)
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18
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Dissociation of Bone Resorption and Formation in Spaceflight and Simulated Microgravity: Potential Role of Myokines and Osteokines? Biomedicines 2022; 10:biomedicines10020342. [PMID: 35203551 PMCID: PMC8961781 DOI: 10.3390/biomedicines10020342] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 11/16/2022] Open
Abstract
The dissociation of bone formation and resorption is an important physiological process during spaceflight. It also occurs during local skeletal unloading or immobilization, such as in people with neuromuscular disorders or those who are on bed rest. Under these conditions, the physiological systems of the human body are perturbed down to the cellular level. Through the absence of mechanical stimuli, the musculoskeletal system and, predominantly, the postural skeletal muscles are largely affected. Despite in-flight exercise countermeasures, muscle wasting and bone loss occur, which are associated with spaceflight duration. Nevertheless, countermeasures can be effective, especially by preventing muscle wasting to rescue both postural and dynamic as well as muscle performance. Thus far, it is largely unknown how changes in bone microarchitecture evolve over the long term in the absence of a gravity vector and whether bone loss incurred in space or following the return to the Earth fully recovers or partly persists. In this review, we highlight the different mechanisms and factors that regulate the humoral crosstalk between the muscle and the bone. Further we focus on the interplay between currently known myokines and osteokines and their mutual regulation.
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19
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Sirufo MM, De Pietro F, Catalogna A, Ginaldi L, De Martinis M. The Microbiota-Bone-Allergy Interplay. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 19:ijerph19010282. [PMID: 35010543 PMCID: PMC8750778 DOI: 10.3390/ijerph19010282] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 12/22/2021] [Accepted: 12/24/2021] [Indexed: 12/18/2022]
Abstract
Emerging knowledge suggests an increasing importance of gut microbiota in health and disease. Allergy and bone metabolism are closely interconnected, and the possible negative effects of common therapies are not the only aspects of this relationship. The immune system is influenced by the microbiota-host interactions, and several pieces of evidence suggest the existence of an interplay between microbiota, bone metabolism, and allergies. Understanding these inter-relationships is essential for the development of new potential strategies of treatment and prevention targeting microbiota. A wide range of substances and germs, prebiotics and probiotics, are capable of influencing and modifying the microbiota. Prebiotics and probiotics have been shown in several studies to have different actions based on various factors such as sex, hormonal status, and age. In this review, we summarize the latest knowledge on the topic, and we discuss practical implications and the need for further studies.
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Affiliation(s)
- Maria Maddalena Sirufo
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Piazzale Salvatore Tommasi n. 1, 67100 L’Aquila, Italy; (M.M.S.); (F.D.P.); (A.C.); (L.G.)
- Allergy and Clinical Immunology Unit, Center for the Diagnosis and Treatment of Osteoporosis, AUSL 04, 64100 Teramo, Italy
| | - Francesca De Pietro
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Piazzale Salvatore Tommasi n. 1, 67100 L’Aquila, Italy; (M.M.S.); (F.D.P.); (A.C.); (L.G.)
- Allergy and Clinical Immunology Unit, Center for the Diagnosis and Treatment of Osteoporosis, AUSL 04, 64100 Teramo, Italy
| | - Alessandra Catalogna
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Piazzale Salvatore Tommasi n. 1, 67100 L’Aquila, Italy; (M.M.S.); (F.D.P.); (A.C.); (L.G.)
- Allergy and Clinical Immunology Unit, Center for the Diagnosis and Treatment of Osteoporosis, AUSL 04, 64100 Teramo, Italy
| | - Lia Ginaldi
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Piazzale Salvatore Tommasi n. 1, 67100 L’Aquila, Italy; (M.M.S.); (F.D.P.); (A.C.); (L.G.)
- Allergy and Clinical Immunology Unit, Center for the Diagnosis and Treatment of Osteoporosis, AUSL 04, 64100 Teramo, Italy
| | - Massimo De Martinis
- Department of Life, Health and Environmental Sciences, University of L’Aquila, Piazzale Salvatore Tommasi n. 1, 67100 L’Aquila, Italy; (M.M.S.); (F.D.P.); (A.C.); (L.G.)
- Allergy and Clinical Immunology Unit, Center for the Diagnosis and Treatment of Osteoporosis, AUSL 04, 64100 Teramo, Italy
- Correspondence: ; Tel.: +39-0861-429548
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20
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Momiuchi Y, Motomura Y, Suga E, Mizuno H, Kikuta J, Morimoto A, Mochizuki M, Otaki N, Ishii M, Moro K. Group 2 innate lymphoid cells in bone marrow regulate osteoclastogenesis in a reciprocal manner via RANKL, GM-CSF and IL-13. Int Immunol 2021; 33:573-585. [PMID: 34498703 DOI: 10.1093/intimm/dxab062] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/16/2021] [Indexed: 12/29/2022] Open
Abstract
Group 2 innate lymphoid cells (ILC2s) are tissue-resident cells that play different roles in different organs by sensing surrounding environmental factors. Initially, it was thought that ILC2s in bone marrow (BM) are progenitors for systemic ILC2s, which migrate to other organs and acquire effector functions. However, accumulating evidence that ILC2s differentiate in peripheral tissues suggests that BM ILC2s may play a specific role in the BM as a unique effector per se. Here, we demonstrate that BM ILC2s highly express the receptor activator of nuclear factor κB ligand (RANKL), a robust cytokine for osteoclast differentiation and activation, and RANKL expression on ILC2s is up-regulated by interleukin (IL)-2, IL-7 and all-trans retinoic acid (ATRA). BM ILC2s co-cultured with BM-derived monocyte/macrophage lineage cells (BMMs) in the presence of IL-7 induce the differentiation of tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts in a RANKL-dependent manner. In contrast, BM ILC2s stimulated with IL-33 down-regulate RANKL expression and convert BMMs differentiation into M2 macrophage-like cells rather than osteoclasts by granulocyte macrophage colony-stimulating factor (GM-CSF) and IL-13 production. Intravital imaging using two-photon microscopy revealed that a depletion of ILC2s prominently impaired in vivo osteoclast activity in an IL-7 plus ATRA-induced bone loss mouse model. These results suggest that ILC2s regulate osteoclast activation and contribute to bone homeostasis in both steady state and IL-33-induced inflammation.
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Affiliation(s)
- Yoshiki Momiuchi
- Laboratory for Innate Immune Systems, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiro-cho, Turumi-ku, Yokohama-shi, Kanagawa 230-0045, Japan.,Department of Medical Life Sciences, Graduate School of Medical Life Sciences, Yokohama City University, 1-7-29 Suehiro-cho, Turumi-ku, Yokohama-shi, Kanagawa 230-0045, Japan
| | - Yasutaka Motomura
- Laboratory for Innate Immune Systems, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiro-cho, Turumi-ku, Yokohama-shi, Kanagawa 230-0045, Japan.,Laboratory for Innate Immune Systems, Department for Microbiology and Immunology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan.,Laboratory for Innate Immune Systems, Osaka University Immunology Frontier Research Center, 3-1 Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Emiko Suga
- Laboratory for Innate Immune Systems, Department for Microbiology and Immunology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Hiroki Mizuno
- Department of Immunology and Cell Biology, Osaka University Immunology Frontier Research Center, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan.,Department of Immunology and Cell Biology, Graduate School of Medicine & Frontier Biosciences, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Junichi Kikuta
- Department of Immunology and Cell Biology, Osaka University Immunology Frontier Research Center, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan.,Department of Immunology and Cell Biology, Graduate School of Medicine & Frontier Biosciences, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Akito Morimoto
- Department of Immunology and Cell Biology, Osaka University Immunology Frontier Research Center, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan.,Department of Immunology and Cell Biology, Graduate School of Medicine & Frontier Biosciences, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Miho Mochizuki
- Laboratory for Innate Immune Systems, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiro-cho, Turumi-ku, Yokohama-shi, Kanagawa 230-0045, Japan
| | - Natsuko Otaki
- Laboratory for Innate Immune Systems, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiro-cho, Turumi-ku, Yokohama-shi, Kanagawa 230-0045, Japan.,Department of Microbiology and Immunology, Graduate School of Medicine, Keio University, 3-5 Shinano-machi, Shinjyuku-ku, Tokyo 160-8582, Japan
| | - Masaru Ishii
- Department of Immunology and Cell Biology, Osaka University Immunology Frontier Research Center, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan.,Department of Immunology and Cell Biology, Graduate School of Medicine & Frontier Biosciences, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan
| | - Kazuyo Moro
- Laboratory for Innate Immune Systems, RIKEN Center for Integrative Medical Sciences (IMS), 1-7-22 Suehiro-cho, Turumi-ku, Yokohama-shi, Kanagawa 230-0045, Japan.,Department of Medical Life Sciences, Graduate School of Medical Life Sciences, Yokohama City University, 1-7-29 Suehiro-cho, Turumi-ku, Yokohama-shi, Kanagawa 230-0045, Japan.,Laboratory for Innate Immune Systems, Department for Microbiology and Immunology, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan.,Laboratory for Innate Immune Systems, Osaka University Immunology Frontier Research Center, 3-1 Yamadaoka, Suita-shi, Osaka 565-0871, Japan
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21
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Andrews RE, Brown JE, Lawson MA, Chantry AD. Myeloma Bone Disease: The Osteoblast in the Spotlight. J Clin Med 2021; 10:jcm10173973. [PMID: 34501423 PMCID: PMC8432062 DOI: 10.3390/jcm10173973] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/24/2021] [Accepted: 08/27/2021] [Indexed: 12/17/2022] Open
Abstract
Lytic bone disease remains a life-altering complication of multiple myeloma, with up to 90% of sufferers experiencing skeletal events at some point in their cancer journey. This tumour-induced bone disease is driven by an upregulation of bone resorption (via increased osteoclast (OC) activity) and a downregulation of bone formation (via reduced osteoblast (OB) activity), leading to phenotypic osteolysis. Treatments are limited, and currently exclusively target OCs. Despite existing bone targeting therapies, patients successfully achieving remission from their cancer can still be left with chronic pain, poor mobility, and reduced quality of life as a result of bone disease. As such, the field is desperately in need of new and improved bone-modulating therapeutic agents. One such option is the use of bone anabolics, drugs that are gaining traction in the osteoporosis field following successful clinical trials. The prospect of using these therapies in relation to myeloma is an attractive option, as they aim to stimulate OBs, as opposed to existing therapeutics that do little to orchestrate new bone formation. The preclinical application of bone anabolics in myeloma mouse models has demonstrated positive outcomes for bone repair and fracture resistance. Here, we review the role of the OB in the pathophysiology of myeloma-induced bone disease and explore whether novel OB targeted therapies could improve outcomes for patients.
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Affiliation(s)
- Rebecca E. Andrews
- Department of Oncology and Metabolism, The Medical School, The University of Sheffield, Sheffield S10 2RX, UK; (J.E.B.); (M.A.L.); (A.D.C.)
- Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Royal Hallamshire Hospital, Sheffield S10 2JF, UK
- Correspondence:
| | - Janet E. Brown
- Department of Oncology and Metabolism, The Medical School, The University of Sheffield, Sheffield S10 2RX, UK; (J.E.B.); (M.A.L.); (A.D.C.)
- Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Royal Hallamshire Hospital, Sheffield S10 2JF, UK
| | - Michelle A. Lawson
- Department of Oncology and Metabolism, The Medical School, The University of Sheffield, Sheffield S10 2RX, UK; (J.E.B.); (M.A.L.); (A.D.C.)
| | - Andrew D. Chantry
- Department of Oncology and Metabolism, The Medical School, The University of Sheffield, Sheffield S10 2RX, UK; (J.E.B.); (M.A.L.); (A.D.C.)
- Department of Haematology, Sheffield Teaching Hospitals NHS Foundation Trust, Royal Hallamshire Hospital, Sheffield S10 2JF, UK
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22
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Huidrom S, Beg MA, Masood T. Post-menopausal Osteoporosis and Probiotics. Curr Drug Targets 2021; 22:816-822. [PMID: 33109043 DOI: 10.2174/1389450121666201027124947] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 09/10/2020] [Accepted: 09/21/2020] [Indexed: 11/22/2022]
Abstract
Postmenopausal osteoporosis (PMO) is characterized by low bone mass and structural deterioration of bone tissue with increased risk of fracture in postmenopausal women. It is due to the deficiency of estrogen production after menopause, which causes the imbalance in the bone remodeling process where resorption/formation skewed more towards resoption, which leads to bone loss. It causes high morbidity and severe health complication among the affected women. The current PMO therapy has many unwanted side effects and even increases the possibility of tumorigenesis. Therefore, an alternative therapy that is safe and effective is required. Probiotics are dietary supplements consisting of beneficial microbes and when administered in an adequate amount, confer a health benefit to the host. Recent scientific evidences suggested the link between the intestinal microbiota and bone health. This review discusses the process of bone remodeling and the role of intestinal microbiota on the bone metabolism of the host. Further, it summarizes the recent studies of probiotic on an animal model of PMO and also in post postmenopausal women.
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Affiliation(s)
- Sangeeta Huidrom
- Department of Pharmacology, Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun - 248001, Uttarakhand, India
| | - Mirza Atif Beg
- Department of Pharmacology, Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun - 248001, Uttarakhand, India
| | - Tariq Masood
- Department of Biochemistry, Shri Guru Ram Rai Institute of Medical and Health Sciences, Dehradun - 248001, Uttarakhand, India
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23
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Amarasekara DS, Kim S, Rho J. Regulation of Osteoblast Differentiation by Cytokine Networks. Int J Mol Sci 2021; 22:ijms22062851. [PMID: 33799644 PMCID: PMC7998677 DOI: 10.3390/ijms22062851] [Citation(s) in RCA: 155] [Impact Index Per Article: 51.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/08/2021] [Accepted: 03/08/2021] [Indexed: 02/07/2023] Open
Abstract
Osteoblasts, which are bone-forming cells, play pivotal roles in bone modeling and remodeling. Osteoblast differentiation, also known as osteoblastogenesis, is orchestrated by transcription factors, such as runt-related transcription factor 1/2, osterix, activating transcription factor 4, special AT-rich sequence-binding protein 2 and activator protein-1. Osteoblastogenesis is regulated by a network of cytokines under physiological and pathophysiological conditions. Osteoblastogenic cytokines, such as interleukin-10 (IL-10), IL-11, IL-18, interferon-γ (IFN-γ), cardiotrophin-1 and oncostatin M, promote osteoblastogenesis, whereas anti-osteoblastogenic cytokines, such as tumor necrosis factor-α (TNF-α), TNF-β, IL-1α, IL-4, IL-7, IL-12, IL-13, IL-23, IFN-α, IFN-β, leukemia inhibitory factor, cardiotrophin-like cytokine, and ciliary neurotrophic factor, downregulate osteoblastogenesis. Although there are gaps in the body of knowledge regarding the interplay of cytokine networks in osteoblastogenesis, cytokines appear to be potential therapeutic targets in bone-related diseases. Thus, in this study, we review and discuss our osteoblast, osteoblast differentiation, osteoblastogenesis, cytokines, signaling pathway of cytokine networks in osteoblastogenesis.
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Affiliation(s)
- Dulshara Sachini Amarasekara
- Department of Zoology and Environment Sciences, Faculty of Science, University of Colombo, Colombo 00300, Sri Lanka;
| | - Sumi Kim
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea;
| | - Jaerang Rho
- Department of Microbiology and Molecular Biology, Chungnam National University, Daejeon 34134, Korea;
- Correspondence: ; Tel.: +82-42-821-6420; Fax: +82-42-822-7367
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24
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Bednarz-Misa I, Bromke MA, Krzystek-Korpacka M. Interleukin (IL)-7 Signaling in the Tumor Microenvironment. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1290:9-49. [PMID: 33559853 DOI: 10.1007/978-3-030-55617-4_2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Interleukin (IL)-7 plays an important immunoregulatory role in different types of cells. Therefore, it attracts researcher's attention, but despite the fact, many aspects of its modulatory action, as well as other functionalities, are still poorly understood. The review summarizes current knowledge on the interleukin-7 and its signaling cascade in context of cancer development. Moreover, it provides a cancer-type focused description of the involvement of IL-7 in solid tumors, as well as hematological malignancies.The interleukin has been discovered as a growth factor crucial for the early lymphocyte development and supporting the growth of malignant cells in certain leukemias and lymphomas. Therefore, its targeting has been explored as a treatment modality in hematological malignancies, while the unique ability to expand lymphocyte populations selectively and without hyperinflammation has been used in experimental immunotherapies in patients with lymphopenia. Ever since the early research demonstrated a reduced growth of solid tumors in the presence of IL-7, the interleukin application in boosting up the anticancer immunity has been investigated. However, a growing body of evidence indicative of IL-7 upregulation in carcinomas, facilitating tumor growth and metastasis and aiding drug-resistance, is accumulating. It therefore becomes increasingly apparent that the response to the IL-7 stimulus strongly depends on cell type, their developmental stage, and microenvironmental context. The interleukin exerts its regulatory action mainly through phosphorylation events in JAK/STAT and PI3K/Akt pathways, while the significance of MAPK pathway seems to be limited to solid tumors. Given the unwavering interest in IL-7 application in immunotherapy, a better understanding of interleukin role, source in tumor microenvironment, and signaling pathways, as well as the identification of cells that are likely to respond should be a research priority.
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Affiliation(s)
- Iwona Bednarz-Misa
- Department of Medical Biochemistry, Wroclaw Medical University, Wroclaw, Poland
| | - Mariusz A Bromke
- Department of Medical Biochemistry, Wroclaw Medical University, Wroclaw, Poland
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25
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Epsley S, Tadros S, Farid A, Kargilis D, Mehta S, Rajapakse CS. The Effect of Inflammation on Bone. Front Physiol 2021; 11:511799. [PMID: 33584321 PMCID: PMC7874051 DOI: 10.3389/fphys.2020.511799] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 11/30/2020] [Indexed: 12/21/2022] Open
Abstract
Bone remodeling is the continual process to renew the adult skeleton through the sequential action of osteoblasts and osteoclasts. Nuclear factor RANK, an osteoclast receptor, and its ligand RANKL, expressed on the surface of osteoblasts, result in coordinated control of bone remodeling. Inflammation, a feature of illness and injury, plays a distinct role in skewing this process toward resorption. It does so via the interaction of inflammatory mediators and their related peptides with osteoblasts and osteoclasts, as well as other immune cells, to alter the expression of RANK and RANKL. Such chemical mediators include TNFα, glucocorticoids, histamine, bradykinin, PGE2, systemic RANKL from immune cells, and interleukins 1 and 6. Conditions, such as periodontal disease and alveolar bone erosion, aseptic prosthetic loosening, rheumatoid arthritis, and some sports related injuries are characterized by the result of this process. A thorough understanding of bone response to injury and disease, and ability to detect such biomarkers, as well as imaging to identify early structural and mechanical property changes in bone architecture, is important in improving management and outcomes of bone related pathology. While gut health and vitamin and mineral availability appear vitally important, nutraceuticals also have an impact on bone health. To date most pharmaceutical intervention targets inflammatory cytokines, although strategies to favorably alter inflammation induced bone pathology are currently limited. Further research is required in this field to advance early detection and treatments.
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Affiliation(s)
- Scott Epsley
- Philadelphia 76ers, Philadelphia, PA, United States
| | - Samuel Tadros
- Department of Radiology and Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, United States
| | - Alexander Farid
- Department of Radiology and Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, United States
| | - Daniel Kargilis
- Department of Radiology and Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, United States
| | | | - Chamith S. Rajapakse
- Department of Radiology and Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, United States
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26
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Tantikanlayaporn D, Wichit P, Suksen K, Suksamrarn A, Piyachaturawat P. Andrographolide modulates OPG/RANKL axis to promote osteoblastic differentiation in MC3T3-E1 cells and protects bone loss during estrogen deficiency in rats. Biomed Pharmacother 2020; 131:110763. [DOI: 10.1016/j.biopha.2020.110763] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Revised: 09/13/2020] [Accepted: 09/16/2020] [Indexed: 11/26/2022] Open
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27
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Sarker H, Hardy E, Haimour A, Karim MA, Scholl-Bürgi S, Martignetti JA, Botto LD, Fernandez-Patron C. Comparative Serum Analyses Identify Cytokines and Hormones Commonly Dysregulated as Well as Implicated in Promoting Osteolysis in MMP-2-Deficient Mice and Children. Front Physiol 2020; 11:568718. [PMID: 33101055 PMCID: PMC7546215 DOI: 10.3389/fphys.2020.568718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 09/08/2020] [Indexed: 11/13/2022] Open
Abstract
Deficiency of matrix metalloproteinase 2 (MMP-2) causes a complex syndrome characterized by multicentric osteolysis, nodulosis, and arthropathy (MONA) as well as cardiac valve defects, dwarfism and hirsutism. MMP-2 deficient (Mmp2 -/-) mice are a model for this rare multisystem pediatric syndrome but their phenotype remains incompletely characterized. Here, we extend the phenotypic characterization of MMP-2 deficiency by comparing the levels of cytokines and chemokines, soluble cytokine receptors, angiogenesis factors, bone development factors, apolipoproteins and hormones in mice and humans. Initial screening was performed on an 8-year-old male presenting a previously unreported deletion mutation c1294delC (Arg432fs) in the MMP2 gene and diagnosed with MONA. Of eighty-one serum biomolecules analyzed, eleven were upregulated (>4-fold), two were downregulated (>4-fold) and sixty-eight remained unchanged, compared to unaffected controls. Specifically, Eotaxin, GM-CSF, M-CSF, GRO-α, MDC, IL-1β, IL-7, IL-12p40, MIP-1α, MIP-1β, and MIG were upregulated and epidermal growth factor (EGF) and ACTH were downregulated in this patient. Subsequent analysis of five additional MMP-2 deficient patients confirmed the upregulation in Eotaxin, IL-7, IL-12p40, and MIP-1α, and the downregulation in EGF. To establish whether these alterations are bona fide phenotypic traits of MMP-2 deficiency, we further studied Mmp2 -/- mice. Among 32 cytokines measured in plasma of Mmp2 -/- mice, the cytokines Eotaxin, IL-1β, MIP-1α, and MIG were commonly upregulated in mice as well as patients with MMP-2 deficiency. Moreover, bioactive cortisol (a factor that exacerbates osteoporosis) was also elevated in MMP-2 deficient mice and patients. Among the factors we have identified to be dysregulated in MMP-2 deficiency many are osteoclastogenic and could potentially contribute to bone disorder in MONA. These new molecular phenotypic traits merit being targeted in future research aimed at understanding the pathological mechanisms elicited by MMP-2 deficiency in children.
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Affiliation(s)
- Hassan Sarker
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | | | - Ayman Haimour
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Mahmoud A. Karim
- Department of Cell Biology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
| | - Sabine Scholl-Bürgi
- Clinic for Pediatrics I, Inherited Metabolic Disorders, Medical University of Innsbruck, Innsbruck, Austria
| | - John A. Martignetti
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Rudy L. Ruggles Biomedical Research Institute, Nuvance Health, Danbury, CT, United States
| | - Lorenzo D. Botto
- Department of Pediatrics, Division of Medical Genetics and Pediatrics, The University of Utah, Salt Lake City, UT, United States
| | - Carlos Fernandez-Patron
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, Canada
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28
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Dell'Aquila E, Armento G, Iuliani M, Simonetti S, D'Onofrio L, Zeppola T, Madaudo C, Russano M, Citarella F, Ribelli G, Pantano F, Vincenzi B, Tonini G, Santini D. Denosumab for cancer-related bone loss. Expert Opin Biol Ther 2020; 20:1261-1274. [PMID: 32835531 DOI: 10.1080/14712598.2020.1814731] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Prolonged use of anti-cancer treatments in breast and prostate tumors alters physiological bone turnover leading to adverse skeletal related events, such as osteoporosis, loss of bone mass, and increased risk of fractures. These complications known as cancer treatment-induced bone loss (CTIBL) should be managed with bone targeting agents such as the bisphosphonates and denosumab. The latter is a monoclonal antibody against the receptor activator of nuclear factor-kB ligand (RANKL) that suppresses osteoclasts function and survival increasing bone mass. AREAS COVERED This review will focus on the mechanisms associated with bone loss induced by cancer treatments and the most recent evidence about the use of denosumab as preventive and therapeutic strategy to protect bone health. Moreover, we will discuss several key aspects regarding the clinical practical use of denosumab to optimize the management of CTLIB in breast and prostate cancer. EXPERT OPINION Denosumab treatment strongly prevents cancer therapies-related skeletal issues in breast and prostate cancer with a good safety profile. Adjuvant six-monthly denosumab delays the time to first fracture onset in early stage breast cancer patients with normal or altered bone mineral density (BMD). Similarly, denosumab treatment is able to prevent fractures and BMD loss in nonmetastatic prostate cancer patients.
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Affiliation(s)
| | - Grazia Armento
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Michele Iuliani
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Sonia Simonetti
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Loretta D'Onofrio
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Tea Zeppola
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Cristina Madaudo
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Marco Russano
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Fabrizio Citarella
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Giulia Ribelli
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Francesco Pantano
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Bruno Vincenzi
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Giuseppe Tonini
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
| | - Daniele Santini
- Medical Oncology Department, Campus Bio-Medico University of Rome , Rome, Itlay
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29
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Liu Z, Liang W, Kang D, Chen Q, Ouyang Z, Yan H, Huang B, Jin D, Chen Y, Li Q. Increased Osteoblastic Cxcl9 Contributes to the Uncoupled Bone Formation and Resorption in Postmenopausal Osteoporosis. Clin Interv Aging 2020; 15:1201-1212. [PMID: 32764906 PMCID: PMC7381095 DOI: 10.2147/cia.s254885] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 05/29/2020] [Indexed: 12/22/2022] Open
Abstract
Introduction Estrogen deficiency leads to bone loss in postmenopausal osteoporosis, because bone formation, albeit enhanced, fails to keep pace with the stimulated osteoclastic bone resorption. The mechanism driving this uncoupling is central to the pathogenesis of postmenopausal osteoporosis, which, however, remains poorly understood. We previously found that Cxcl9 secreted by osteoblasts inhibited osteogenesis in bone, while the roles of Cxcl9 on osteoclastic bone resorption and osteoporosis are unclear. Materials and Methods Postmenopausal osteoporosis mouse model was established by bilateral surgical ovariectomy (OVX). In situ hybridization was performed to detect Cxcl9 mRNA expression in bone. ELISA assay was conducted to assess Cxcl9 concentrations in bone and serum. Cxcl9 activity was blocked by its neutralizing antibody. Micro-CT was performed to determine the effects of Cxcl9 neutralization on bone structure. Cell Migration and adhesion assay were conducted to evaluate the effects of Cxcl9 on osteoclast activity. TRAP staining and Western blot were performed to assess osteoclast differentiation. CXCR3 antagonist NBI-74,330 or ERK antagonist SCH772984 was administered to osteoclast to study the effects of Cxcl9 on CXCR3/ERK signaling. Results Cxcl9 was expressed and secreted increasingly in OVX mice bone. Neutralizing Cxcl9 in bone marrow prevented bone loss in the mice by facilitating bone formation as well as inhibiting bone resorption. In vitro, Cxcl9 secreted from osteoblasts facilitated osteoclast precursors adhesion, migration and their differentiation into mature osteoclasts. The positive role of osteoblastic Cxcl9 on osteoclasts was eliminated by blocking CXCR3/ERK signaling in osteoclasts. Estrogen negatively regulated Cxcl9 expression and secretion in osteoblasts, explaining the increased Cxcl9 concentration in OVX mice bone. Conclusion Our study illustrates the roles of Cxcl9 in inhibiting bone formation and stimulating bone resorption in osteoporotic bone, therefore providing a possible therapeutic target to the treatment of postmenopausal osteoporosis.
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Affiliation(s)
- Zezheng Liu
- Academy of Orthopedics, Guangdong Province, Department of Spine Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
| | - Wenquan Liang
- Academy of Orthopedics, Guangdong Province, Department of Spine Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
| | - Dawei Kang
- Academy of Orthopedics, Guangdong Province, Department of Spine Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
| | - Qingjing Chen
- Academy of Orthopedics, Guangdong Province, Department of Spine Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
| | - Zhicong Ouyang
- Academy of Orthopedics, Guangdong Province, Department of Spine Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
| | - Huibo Yan
- Academy of Orthopedics, Guangdong Province, Department of Spine Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
| | - Bin Huang
- Academy of Orthopedics, Guangdong Province, Department of Spine Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
| | - Dadi Jin
- Academy of Orthopedics, Guangdong Province, Department of Spine Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
| | - Yinkui Chen
- Department of Oncology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
| | - Qingchu Li
- Academy of Orthopedics, Guangdong Province, Department of Spine Surgery, The Third Affiliated Hospital of Southern Medical University, Guangzhou, People's Republic of China
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30
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Cline-Smith A, Axelbaum A, Shashkova E, Chakraborty M, Sanford J, Panesar P, Peterson M, Cox L, Baldan A, Veis D, Aurora R. Ovariectomy Activates Chronic Low-Grade Inflammation Mediated by Memory T Cells, Which Promotes Osteoporosis in Mice. J Bone Miner Res 2020; 35:1174-1187. [PMID: 31995253 PMCID: PMC8061311 DOI: 10.1002/jbmr.3966] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 12/23/2019] [Accepted: 01/16/2020] [Indexed: 12/27/2022]
Abstract
The loss of estrogen (E2 ) initiates a rapid phase of bone loss leading to osteoporosis in one-half of postmenopausal women, but the mechanism is not fully understood. Here, we show for the first time how loss of E2 activates low-grade inflammation to promote the acute phase of bone catabolic activity in ovariectomized (OVX) mice. E2 regulates the abundance of dendritic cells (DCs) that express IL-7 and IL-15 by inducing the Fas ligand (FasL) and apoptosis of the DC. In the absence of E2 , DCs become long-lived, leading to increased IL-7 and IL-15. We find that IL-7 and IL-15 together, but not alone, induced antigen-independent production of IL-17A and TNFα in a subset of memory T cells (TMEM ). OVX of mice with T-cell-specific ablation of IL15RA showed no IL-17A and TNFα expression, and no increase in bone resorption or bone loss, confirming the role of IL-15 in activating the TMEM and the need for inflammation. Our results provide a new mechanism by which E2 regulates the immune system, and how menopause leads to osteoporosis. The low-grade inflammation is likely to cause or contribute to other comorbidities observed postmenopause. © 2020 American Society for Bone and Mineral Research.
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Affiliation(s)
- Anna Cline-Smith
- Department of Molecular Microbiology & Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Ariel Axelbaum
- Department of Molecular Microbiology & Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Elena Shashkova
- Department of Molecular Microbiology & Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Mousumi Chakraborty
- Department of Molecular Microbiology & Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Jessie Sanford
- Department of Molecular Microbiology & Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Prabhjyot Panesar
- Department of Molecular Microbiology & Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Macey Peterson
- Department of Molecular Microbiology & Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Linda Cox
- Division of Bone and Mineral Diseases, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
| | - Angel Baldan
- Department of Biochemistry and Molecular Biology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Deborah Veis
- Division of Bone and Mineral Diseases, Washington University School of Medicine in St. Louis, St. Louis, MO, USA
| | - Rajeev Aurora
- Department of Molecular Microbiology & Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
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31
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Cervo MMC, Scott D, Seibel MJ, Cumming RG, Naganathan V, Blyth FM, Le Couteur DG, Handelsman DJ, Ribeiro RV, Waite LM, Shivappa N, Hebert JR, Hirani V. Proinflammatory Diet Increases Circulating Inflammatory Biomarkers and Falls Risk in Community-Dwelling Older Men. J Nutr 2020; 150:373-381. [PMID: 31665502 DOI: 10.1093/jn/nxz256] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 09/03/2019] [Accepted: 09/26/2019] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The relations between diet, chronic inflammation, and musculoskeletal health are unclear, especially among older men. OBJECTIVE This study aimed to determine associations of the Dietary Inflammatory Index (DII) with inflammatory biomarkers, musculoskeletal health, and falls risk in community-dwelling older men. METHODS The cross-sectional analysis included 794 community-dwelling men, mean age 81.1 ± 4.5 y, who participated in the 5-y follow-up of the Concord Health and Aging in Men Project. Of these, 616 were seen again 3 y later for the longitudinal analysis. Energy-adjusted DII (E-DII) was calculated from a validated diet history questionnaire. Bone mineral density (BMD) was measured using DXA. Twenty-four inflammatory biomarkers were analyzed. Incident falls over 3 y were determined through telephone interviews every 4 mo. Multiple regression, linear mixed effects models, negative binomial regression, and mediation analysis were utilized in this study. RESULTS A higher E-DII score (indicating a more proinflammatory diet) was associated with higher concentrations of IL-6 (β: 0.028 pg/mL; 95% CI: 0.003, 0.053), IL-7 (β: 0.020 pg/mL; 95% CI: 0.002, 0.037), and TNF-α (β: 0.027 pg/mL; 95% CI: 0.003, 0.051). A higher E-DII score was also associated with lower appendicular lean mass adjusted for BMI (ALMBMI) (β: -0.006 kg/m2; 95% CI: -0.010, -0.001). For every unit increase in E-DII (range: -4.91 to +3.66 units), incident falls rates increased by 13% (incidence rate ratio: 1.13; 95% CI: 1.05, 1.21) over 3 y. Mediation analysis showed that the association between E-DII and 3-y incident falls was influenced by the concentrations of IL-7 by 24%. There was no association between E-DII and BMD. CONCLUSIONS Consumption of a proinflammatory diet was associated with increased concentrations of IL-6, IL-7, and TNF-α; increased falls risk; and lower ALMBMI in community-dwelling older men. The association between incident falls and E-DII was partly mediated by concentrations of IL-7.
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Affiliation(s)
- Mavil May C Cervo
- Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia
| | - David Scott
- Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia.,Department of Medicine and Australian Institute of Musculoskeletal Science, Melbourne Medical School-Western Campus, The University of Melbourne, St Albans, Victoria, Australia
| | - Markus J Seibel
- Bone Research Program, ANZAC Research Institute, and Department of Endocrinology and Metabolism, Concord Hospital, University of Sydney, Sydney, New South Wales, Australia
| | - Robert G Cumming
- School of Public Health, University of Sydney, Sydney, New South Wales, Australia.,Centre for Education and Research on Aging, Concord Hospital, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.,Aging and Alzheimer's Institute, Concord Hospital, Sydney, New South Wales, Australia.,ARC Centre of Excellence in Population Aging Research, University of Sydney, Sydney, New South Wales, Australia
| | - Vasi Naganathan
- Centre for Education and Research on Aging, Concord Hospital, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.,Aging and Alzheimer's Institute, Concord Hospital, Sydney, New South Wales, Australia
| | - Fiona M Blyth
- Centre for Education and Research on Aging, Concord Hospital, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - David G Le Couteur
- Centre for Education and Research on Aging, Concord Hospital, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.,Aging and Alzheimer's Institute, Concord Hospital, Sydney, New South Wales, Australia.,ARC Centre of Excellence in Population Aging Research, University of Sydney, Sydney, New South Wales, Australia.,ANZAC Research Institute and Charles Perkins Centre, University of Sydney, Sydney, New South Wales, Australia
| | - David J Handelsman
- ANZAC Research Institute, Concord Hospital, University of Sydney, Sydney, New South Wales, Australia
| | - Rosilene V Ribeiro
- School of Life and Environmental Sciences, Charles Perkins Centre, University of Sydney, Sydney, New South Wales, Australia
| | - Louise M Waite
- Centre for Education and Research on Aging, Concord Hospital, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia
| | - Nitin Shivappa
- Cancer Prevention and Control Program, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.,Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.,Connecting Health Innovations LLC, Columbia, SC, USA
| | - James R Hebert
- Cancer Prevention and Control Program, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.,Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.,Connecting Health Innovations LLC, Columbia, SC, USA
| | - Vasant Hirani
- Centre for Education and Research on Aging, Concord Hospital, Faculty of Medicine and Health, University of Sydney, Sydney, New South Wales, Australia.,ARC Centre of Excellence in Population Aging Research, University of Sydney, Sydney, New South Wales, Australia.,School of Life and Environmental Sciences, Charles Perkins Centre, University of Sydney, Sydney, New South Wales, Australia
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32
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Abstract
Cytokines and hematopoietic growth factors have traditionally been thought of as regulators of the development and function of immune and blood cells. However, an ever-expanding number of these factors have been discovered to have major effects on bone cells and the development of the skeleton in health and disease (Table 1). In addition, several cytokines have been directly linked to the development of osteoporosis in both animal models and in patients. In order to understand the mechanisms regulating bone cells and how this may be dysregulated in disease states, it is necessary to appreciate the diverse effects that cytokines and inflammation have on osteoblasts, osteoclasts, and bone mass. This chapter provides a broad overview of this topic with extensive references so that, if desired, readers can access specific references to delve into individual topics in greater detail.
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Affiliation(s)
- Joseph Lorenzo
- Departments of Medicine and Orthopaedic Surgery, UConn Health, Farmington, CT, USA.
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33
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Abstract
Bone and skeletal muscle are integrated organs and their coupling has been considered mainly a mechanical one in which bone serves as attachment site to muscle while muscle applies load to bone and regulates bone metabolism. However, skeletal muscle can affect bone homeostasis also in a non-mechanical fashion, i.e., through its endocrine activity. Being recognized as an endocrine organ itself, skeletal muscle secretes a panel of cytokines and proteins named myokines, synthesized and secreted by myocytes in response to muscle contraction. Myokines exert an autocrine function in regulating muscle metabolism as well as a paracrine/endocrine regulatory function on distant organs and tissues, such as bone, adipose tissue, brain and liver. Physical activity is the primary physiological stimulus for bone anabolism (and/or catabolism) through the production and secretion of myokines, such as IL-6, irisin, IGF-1, FGF2, beside the direct effect of loading. Importantly, exercise-induced myokine can exert an anti-inflammatory action that is able to counteract not only acute inflammation due to an infection, but also a condition of chronic low-grade inflammation raised as consequence of physical inactivity, aging or metabolic disorders (i.e., obesity, type 2 diabetes mellitus). In this review article, we will discuss the effects that some of the most studied exercise-induced myokines exert on bone formation and bone resorption, as well as a brief overview of the anti-inflammatory effects of myokines during the onset pathological conditions characterized by the development a systemic low-grade inflammation, such as sarcopenia, obesity and aging.
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Affiliation(s)
- Marta Gomarasca
- IRCCS Istituto Ortopedico Galeazzi, Laboratory of Experimental Biochemistry & Molecular Biology, Milan, Italy
| | - Giuseppe Banfi
- IRCCS Istituto Ortopedico Galeazzi, Laboratory of Experimental Biochemistry & Molecular Biology, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy
| | - Giovanni Lombardi
- IRCCS Istituto Ortopedico Galeazzi, Laboratory of Experimental Biochemistry & Molecular Biology, Milan, Italy; Gdańsk University of Physical Education & Sport, Gdańsk, Pomorskie, Poland.
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34
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Li L, Rao S, Cheng Y, Zhuo X, Deng C, Xu N, Zhang H, Yang L. Microbial osteoporosis: The interplay between the gut microbiota and bones via host metabolism and immunity. Microbiologyopen 2019; 8:e00810. [PMID: 31001921 PMCID: PMC6692530 DOI: 10.1002/mbo3.810] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 01/09/2019] [Accepted: 01/11/2019] [Indexed: 01/15/2023] Open
Abstract
The complex relationship between intestinal microbiota and host is a novel field in recent years. A large number of studies are being conducted on the relationship between intestinal microbiota and bone metabolism. Bone metabolism consisted of bone absorption and formation exists in the whole process of human growth and development. The nutrient components, inflammatory factors, and hormone environment play important roles in bone metabolism. Recently, intestinal microbiota has been found to influence bone metabolism via influencing the host metabolism, immune function, and hormone secretion. Here, we searched relevant literature on Pubmed and reviewed the effect of intestinal microbiota on bone metabolism through the three aspects, which may provide new ideas and targets for the clinical treatment of osteoporosis.
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Affiliation(s)
- Lishan Li
- Department of endocrinology and metabolismZhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Shitao Rao
- School of Biomedical SciencesCUHKShatin, N.THong Kong SARChina
| | - Yanzhen Cheng
- Department of endocrinology and metabolismZhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Xiaoyun Zhuo
- Department of endocrinology and metabolismZhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Caihong Deng
- Department of endocrinology and metabolismZhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Ningning Xu
- Department of endocrinology and metabolismZhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Hua Zhang
- Department of endocrinology and metabolismZhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Li Yang
- Department of endocrinology and metabolismZhujiang HospitalSouthern Medical UniversityGuangzhouChina
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35
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Shih YRV, Liu M, Kwon SK, Iida M, Gong Y, Sangaj N, Varghese S. Dysregulation of ectonucleotidase-mediated extracellular adenosine during postmenopausal bone loss. SCIENCE ADVANCES 2019; 5:eaax1387. [PMID: 31457100 PMCID: PMC6703860 DOI: 10.1126/sciadv.aax1387] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 07/12/2019] [Indexed: 05/25/2023]
Abstract
Adenosine and its receptors play a key role in bone homeostasis and regeneration. Extracellular adenosine is generated from CD39 and CD73 activity in the cell membrane, through conversion of adenosine triphosphate to adenosine monophosphate (AMP) and AMP to adenosine, respectively. Despite the relevance of CD39/CD73 to bone health, the roles of these enzymes in bona fide skeletal disorders remain unknown. We demonstrate that CD39/CD73 expression and extracellular adenosine levels in the bone marrow are substantially decreased in animals with osteoporotic bone loss. Knockdown of estrogen receptors ESR1 and ESR2 in primary osteoprogenitors and osteoclasts undergoing differentiation showed decreased coexpression of membrane-bound CD39 and CD73 and lower extracellular adenosine. Targeting the adenosine A2B receptor using an agonist attenuated bone loss in ovariectomized mice. Together, these findings suggest a pathological association of purine metabolism with estrogen deficiency and highlight the potential of A2B receptor as a target to treat osteoporosis.
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Affiliation(s)
- Yu-Ru V. Shih
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - Mengqian Liu
- Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA
| | - Seong Keun Kwon
- Department of Otorhinolaryngology–Head and Neck Surgery, Seoul National University Hospital, Seoul 03080, Republic of Korea
| | | | - Ya Gong
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Nivedita Sangaj
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710, USA
| | - Shyni Varghese
- Department of Orthopaedic Surgery, Duke University Medical Center, Durham, NC 27710, USA
- Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA
- Department of Biomedical Engineering, Duke University, Durham, NC 27708, USA
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36
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Li G, Zhang L, Wang D, AIQudsy L, Jiang JX, Xu H, Shang P. Muscle-bone crosstalk and potential therapies for sarco-osteoporosis. J Cell Biochem 2019; 120:14262-14273. [PMID: 31106446 DOI: 10.1002/jcb.28946] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 04/15/2019] [Accepted: 04/18/2019] [Indexed: 12/17/2022]
Abstract
The nature of muscle-bone crosstalk has been historically considered to be only mechanical, where the muscle is the load applier while bone provides the attachment sites. However, this dogma has been challenged with the emerging notion that bone and muscle act as secretory endocrine organs affect the function of each other. Biochemical crosstalk occurs through myokines such as myostatin, irisin, interleukin (IL)-6, IL-7, IL-15, insulin-like growth factor-1, fibroblast growth factor (FGF)-2, and β-aminoisobutyric acid and through bone-derived factors including FGF23, prostaglandin E2 , transforming growth factor β, osteocalcin, and sclerostin. Aside from the biochemical and mechanical interaction, additional factors including aging, circadian rhythm, nervous system network, nutrition intake, and exosomes also have effects on bone-muscle crosstalk. Here, we summarize the current research progress in the area, which may be conductive to identify potential novel therapies for the osteoporosis and sarcopenia, especially when they develop in parallel.
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Affiliation(s)
- GuoBin Li
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Lan Zhang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - DongEn Wang
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Luban AIQudsy
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Jean X Jiang
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center, San Antonio, Texas
| | - HuiYun Xu
- Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Peng Shang
- Research & Development Institute in Shenzhen, Northwestern Polytechnical University, Shenzhen, Guangdong, China
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37
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Oncogenic basic amino acid insertions at the extracellular juxtamembrane region of IL7RA cause receptor hypersensitivity. Blood 2019; 133:1259-1263. [DOI: 10.1182/blood-2018-09-872945] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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38
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Roato I, Vitale M. The Uncovered Role of Immune Cells and NK Cells in the Regulation of Bone Metastasis. Front Endocrinol (Lausanne) 2019; 10:145. [PMID: 30930851 PMCID: PMC6423901 DOI: 10.3389/fendo.2019.00145] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 02/18/2019] [Indexed: 12/17/2022] Open
Abstract
Bone is one of the main metastatic sites of solid tumors like breast, lung, and prostate cancer. Disseminated tumor cells (DTCs) and cancer stem cells (CSCs) represent the main target to counteract bone metastatization. These cells often localize in bone marrow (BM) at level of pre-metastatic niche: they can remain dormant for years or directly grow and create bone lesion, according to the different stimulations received in BM. The immune system in bone marrow is dampened and represents an appealing site for DTCs/CSCs. NK cells have an important role in controlling tumor progression, but their involvement in bone metastasis formation is an interesting and not fully investigated issue. Indeed, whether NK cells can interfere with CSC formation, kill them at the site of primary tumor, during circulation or in the pre-metastic niche needs to be elucidated. This review focuses on different aspects that regulate DTC/CSC life in bone and how NK cells potentially control bone metastasis formation.
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Affiliation(s)
- Ilaria Roato
- Center for Research and Medical Studies (CeRMS), A.O.U. Città della Salute e della Scienza di Torino, Turin, Italy
- *Correspondence: Ilaria Roato
| | - Massimo Vitale
- UOC Immunologia, IRCCS Ospedale Policlinico San Martino Genova, Genoa, Italy
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Hsu WB, Hsu WH, Hung JS, Shen WJ, Hsu RWW. Transcriptome analysis of osteoblasts in an ovariectomized mouse model in response to physical exercise. Bone Joint Res 2018; 7:601-608. [PMID: 30581558 PMCID: PMC6269594 DOI: 10.1302/2046-3758.711.bjr-2018-0075.r2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Objectives Osteoporosis is a metabolic disease resulting in progressive loss of bone mass as measured by bone mineral density (BMD). Physical exercise has a positive effect on increasing or maintaining BMD in postmenopausal women. The contribution of exercise to the regulation of osteogenesis in osteoblasts remains unclear. We therefore investigated the effect of exercise on osteoblasts in ovariectomized mice. Methods We compared the activity of differentially expressed genes of osteoblasts in ovariectomized mice that undertook exercise (OVX+T) with those that did not (OVX), using microarray and bioinformatics. Results Many inflammatory pathways were significantly downregulated in the osteoblasts after exercise. Meanwhile, IBSP and SLc13A5 gene expressions were upregulated in the OVX+T group. Furthermore, in in vitro assay, IBSP and SLc13A5 mRNAs were also upregulated during the osteogenic differentiation of MC3T3-E1 and 7F2 cells. Conclusion These findings suggest that exercise may not only reduce the inflammatory environment in ovariectomized mice, indirectly suppressing the overactivated osteoclasts, but may also directly activate osteogenesis-related genes in osteoblasts. Exercise may thus prevent the bone loss caused by oestrogen deficiency through mediating the imbalance between the bone resorptive activity of osteoclasts and the bone formation activity of osteoblasts. Cite this article: W-B. Hsu, W-H. Hsu, J-S. Hung, W-J. Shen, R. W-W. Hsu. Transcriptome analysis of osteoblasts in an ovariectomized mouse model in response to physical exercise. Bone Joint Res 2018;7:601–608. DOI: 10.1302/2046-3758.711.BJR-2018-0075.R2.
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Affiliation(s)
- W-B Hsu
- Sports Medicine Center, Chang Gung Memorial Hospital, Pu-Tzi City, Taiwan
| | - W-H Hsu
- Sports Medicine Center and Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Pu-Tzi City, Taiwan; Chang Gung University, Pu-Tzi City, Taiwan
| | - J-S Hung
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Pu-Tzi City, Taiwan
| | - W-J Shen
- Po Cheng Orthopedic Institute, Kaohsiung, Taiwan
| | - R W-W Hsu
- Sports Medicine Center and Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Pu-Tzi City, Taiwan; Chang Gung University, Pu-Tzi City, Taiwan
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Activation of the Wnt/β-Catenin Pathway by an Inflammatory Microenvironment Affects the Myogenic Differentiation Capacity of Human Laryngeal Mucosa Mesenchymal Stromal Cells. Stem Cells Dev 2018; 27:771-782. [DOI: 10.1089/scd.2017.0200] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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41
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Zhao JJ, Wu ZF, Yu YH, Wang L, Cheng L. Effects of interleukin-7/interleukin-7 receptor on RANKL-mediated osteoclast differentiation and ovariectomy-induced bone loss by regulating c-Fos/c-Jun pathway. J Cell Physiol 2018; 233:7182-7194. [PMID: 29663382 DOI: 10.1002/jcp.26548] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 02/12/2018] [Indexed: 11/09/2022]
Abstract
To explore the effects of IL-7/IL-7R on the RANKL-mediated osteoclast differentiation in vitro and OVX-induced bone loss in vivo. BMMs and RAW264.7 were transfected with IL-7, IL-7R siRNA, c-Fos siRNA, and c-jun siRNA and later stimulated by RANKL. TRAP and toluidine blue staining were used to observe osteoclast formation and bone resorption, respectively. HE and TRAP staining were used to detect trabecular bone microstructure and osteoclasts of mice, respectively. qRT-PCR and Western blot analysis were used to examine expression. IL-7 unregulated the expression of CTSK, NFATc1, MMP9, and the phosphorylation of p38 and Akt by activating the c-Fos/c-Jun pathway, which increased osteoclast numbers and bone resorption in RANKL-stimulated macrophages. While IL-7R siRNA and c-Fos siRNA decreased the expression, as well as and the phosphorylation of p38 and Akt.IL-7 decreased the BMD and OPG expression in OVX-induced mice and increased the TRAP positive cells, the mRNA expression of c-fos, c-jun, and RANKL, which was contradictory to IL-7R siRNA, and c-Fos siRNA. Furthermore, IL-7R siRNA and c-Fos siRNA caused thicker trabeculae, increased trabecular number, and decreased osteolysis in OVX mice. IL-7/IL-7R can promote RANKL-mediated osteoclast formation and bone resorption by activating the c-Fos/c-Jun pathway, as well as inducing bone loss in OVX mice.
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Affiliation(s)
- Ji-Jun Zhao
- Department of Orthopedics, Wuxi People's Hospital, Wuxi, Jiangsu Province, P. R. China
| | - Zhao-Feng Wu
- Department of Orthopedics, Wuxi People's Hospital, Wuxi, Jiangsu Province, P. R. China
| | - Ying-Hao Yu
- Department of Orthopedics, Wuxi People's Hospital, Wuxi, Jiangsu Province, P. R. China
| | - Ling Wang
- Department of Orthopedics, Wuxi People's Hospital, Wuxi, Jiangsu Province, P. R. China
| | - Li Cheng
- Department of Orthopedics, Wuxi People's Hospital, Wuxi, Jiangsu Province, P. R. China
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42
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Abstract
Osteoporosis, characterized by low bone mass and micro-architectural deterioration of bone tissue with increased risk of fracture, can be categorized into two forms: primary and secondary, depending on whether it occurs as part of the natural aging process (estrogen deficiency) or as part of disease pathology. In both forms bone loss is due to an imbalance in the bone remodeling process, with resorption/formation skewed more toward bone loss. Recent studies and emerging evidence consistently demonstrate the potential of the intestinal microbiota to modulate bone health. This review discusses the process of bone remodeling and the pathology of osteoporosis and introduces the intestinal microbiota and its potential to influence bone health. In particular, we highlight recent murine studies that examine how probiotic supplementation can both increase bone density in healthy individuals and protect against primary (estrogen deficiency) as well as secondary osteoporosis. Potential mechanisms are described to account for how probiotic treatments could be exerting their beneficial effect on bone health.
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43
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Graef JL, Ouyang P, Wang Y, Rendina-Ruedy E, Lerner MR, Marlow D, Lucas EA, Smith BJ. Dried Plum Polyphenolic Extract Combined with Vitamin K and Potassium Restores Trabecular and Cortical Bone in Osteopenic Model of Postmenopausal Bone Loss. J Funct Foods 2018; 42:262-270. [PMID: 30319713 DOI: 10.1016/j.jff.2017.12.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Dried plum has unique anabolic effects on bone, but the responsible bioactive components have remained unclear. This study investigated components of dried plum with potential osteoprotective activity utilizing aged, osteopenic Sprague Dawley rats fed diets supplemented with a crude polyphenol extract, potassium, vitamin K or their combination. Whole body and femoral bone mineral density were restored with the polyphenol and combination treatments to a similar extent as the dried fruit. The combination treatment reversed trabecular bone loss in the spine and cortical bone in the femur mid-diaphysis in a similar manner. Biomarkers of bone resorption were reduced by the polyphenol and combination treatments. The polyphenol extract accounted for most of the anabolic effect of dried plum on bone. This study is the first to show the bioactive components in dried plum responsible for restoring bone in vivo.
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Affiliation(s)
- Jennifer L Graef
- Department of Nutritional Sciences, Oklahoma State University, 301 Human Sciences, Stillwater, OK 74078
| | - Ping Ouyang
- Department of Nutritional Sciences, Oklahoma State University, 301 Human Sciences, Stillwater, OK 74078
| | - Yan Wang
- Department of Nutritional Sciences, Oklahoma State University, 301 Human Sciences, Stillwater, OK 74078
| | - Elizabeth Rendina-Ruedy
- Department of Nutritional Sciences, Oklahoma State University, 301 Human Sciences, Stillwater, OK 74078
| | - Megan R Lerner
- Department of Surgery, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104
| | - Denver Marlow
- Comparative Medicine Group, Kansas State University, Manhattan, KS 66506
| | - Edralin A Lucas
- Department of Nutritional Sciences, Oklahoma State University, 301 Human Sciences, Stillwater, OK 74078
| | - Brenda J Smith
- Department of Nutritional Sciences, Oklahoma State University, 301 Human Sciences, Stillwater, OK 74078
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44
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Lin DPL, Dass CR. Transdifferentiation of adipocytes to osteoblasts: potential for orthopaedic treatment. ACTA ACUST UNITED AC 2018; 70:307-319. [PMID: 29365349 DOI: 10.1111/jphp.12862] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 11/22/2017] [Indexed: 12/14/2022]
Abstract
OBJECTIVES As both adipocytes and osteoblasts originate from the same pool of mesenchymal stem cells, increasing clinical evidence has emerged of the plasticity between the two lineages. For instance, the downregulation of osteoblast differentiation and upregulation of adipogenesis are common features of conditions such as multiple myeloma, obesity and drug-induced bone loss in diabetes mellitus. However, despite in-vitro and in-vivo observations of adipocyte transdifferentiation into osteoblasts, little is known of the underlying mechanisms. KEY FINDINGS This review summarises the current knowledge of this particular transdifferentiation process whereby the Wnt/β-catenin signalling pathway and Runx2 overexpression have been postulated to play a critical role. SUMMARY Furthermore, due to the possibility of a novel therapy in the treatment of bone conditions, a number of agents with the potential to induce adipo-to-osteoblast transdifferentiation have been investigated such as all-trans retinoic acid, bone morphogenetic protein-9 and vascular endothelial growth factor.
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Affiliation(s)
- Daphne P L Lin
- School of Pharmacy and Biomedical Science, Curtin University, Bentley, Perth, WA, Australia.,Curtin Biosciences Research Precinct, Bentley, Perth, WA, Australia
| | - Crispin R Dass
- School of Pharmacy and Biomedical Science, Curtin University, Bentley, Perth, WA, Australia.,Curtin Biosciences Research Precinct, Bentley, Perth, WA, Australia
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Li X, Chang B, Wang B, Bu W, Zhao L, Liu J, Meng L, Wang L, Xin Y, Wang D, Tang Q, Zheng C, Sun H. Rapamycin promotes osteogenesis under inflammatory conditions. Mol Med Rep 2017; 16:8923-8929. [PMID: 28990080 PMCID: PMC5779975 DOI: 10.3892/mmr.2017.7693] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 09/19/2017] [Indexed: 12/12/2022] Open
Abstract
Chronic periodontitis, a common oral disease, usually results in irreversible bone resorption. Bone regeneration is a complex process between bone-forming activity of osteoblasts and bone-resorbing activity of osteoclasts, and still remains a challenge for physicians clinically. A previous study demonstrated that the mechanistic target of rapamycin signaling pathway is involved in osteogenic differentiation of mesenchymal stromal cells. Herein, whether rapamycin could be used to induce osteogenic differentiation of primary bone marrow-derived mesenchymal stem cells (BMSCs) in vitro and promote new bone formation in vivo were evaluated. The results demonstrated that rapamycin alone was not enough to fully induce osteoblast differentiation in vitro and enhanced bone regeneration in vivo. Interestingly, rapamycin in rapamycin plus lipopolysaccharide (LPS)-treated BMSCs significantly increased the gene expression levels of Sp7 transcription factor, runt related transcription factor 2, alkaline phosphatase (ALP) and collagen I (Col I), ALP activity, and calcium nodule at different time points in vitro, indicating that osteoblast differentiation occurs by rapamycin when BMSCs are exposed to LPS simultaneously. It was also demonstrated that rapamycin in rapamycin plus LPS-treated rats promoted bone regeneration in vivo. These results suggest that rapamycin may influence osteoblast differentiation and new bone formation after LPS induces an inflammatory environment. Rapamycin may be used to treat periodontitis associated with bone loss in future clinical practice.
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Affiliation(s)
- Xing Li
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Bei Chang
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Banchao Wang
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Wenhuan Bu
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Liang Zhao
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Jie Liu
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Lin Meng
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Lu Wang
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Ying Xin
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Dandan Wang
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Qi Tang
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Changyu Zheng
- Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA
| | - Hongchen Sun
- Department of Oral Pathology, School and Hospital of Stomatology, Jilin University, Changchun, Jilin 130021, P.R. China
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Sapir-Koren R, Livshits G. Postmenopausal osteoporosis in rheumatoid arthritis: The estrogen deficiency-immune mechanisms link. Bone 2017; 103:102-115. [PMID: 28666971 DOI: 10.1016/j.bone.2017.06.020] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 06/13/2017] [Accepted: 06/26/2017] [Indexed: 12/20/2022]
Abstract
Rheumatoid arthritis (RA) is characterized, among other factors, by systemic bone loss, reaching ~50% prevalence of osteoporosis in postmenopausal women. This is roughly a doubled prevalence in comparison with age-matched non-RA women. Postmenopausal RA women are more likely to be sero-positive for the anti-citrullinated peptide antibody (ACPA). Our extensive review of recent scientific literature enabled us to propose several mechanisms as responsible for the accelerated bone loss in ACPA(+) RA postmenopausal women. Menopause-associated estrogen deficiency plays a major role in these pathological mechanisms, as follows.
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Affiliation(s)
- Rony Sapir-Koren
- Human Population Biology Research Group, Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
| | - Gregory Livshits
- Human Population Biology Research Group, Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Lilian and Marcel Pollak Chair of Biological Anthropology, Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
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47
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Abstract
Osteoporosis increases fracture risk, a cause of crippling morbidity and mortality. The immunoskeletal interface (ISI) is a centralization of cell and cytokine effectors shared between skeletal and immune systems. Consequently, the immune system mediates powerful effects on bone turnover. Physiologically, B cells secrete osteoprotegerin (OPG), a potent anti-osteoclastogenic factor that preserves bone mass. However, activated T cells and B cells secrete pro-osteoclastogenic factors including receptor activator of Nuclear factor-kappaB (NF-kB) ligand (RANKL), Interleukin (IL)-17A, and tumor necrosis factor (TNF)-α promoting bone loss in inflammatory states such as rheumatoid arthritis. Recently, ISI disruption has been linked to osteoporosis in human immunodeficiency virus (HIV) infection/acquired immunodeficiency syndrome (AIDS), where elevated B cell RANKL and diminished OPG drive bone resorption. HIV-antiretroviral therapy paradoxically intensifies bone loss during disease reversal, as immune reconstitution produces osteoclastogenic cytokines. Interestingly, in estrogen deficiency, activated T cells secrete RANKL, TNF, and IL-17A that amplify bone resorption and contribute to postmenopausal osteoporosis. T cell-produced TNF and IL-17A further contribute to bone loss in hyperparathyroidism, while T cell production of the anabolic Wingless integration site (Wnt) ligand, Wnt10b, promotes bone formation in response to anabolic parathyroid hormone and the immunomodulatory costimulation inhibitor cytotoxic T lymphocyte-associated protein-4-IgG (abatacept). These findings provide a window into the workings of the ISI and suggest novel targets for future therapeutic interventions to reduce fracture risk.
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Affiliation(s)
- M Neale Weitzmann
- 1 Department of Veterans Affairs, Atlanta VA Medical Center, Decatur, Georgia, USA
- 2 Department of Medicine, Division of Endocrinology and Metabolism and Lipids, Emory University School of Medicine, Atlanta, Georgia, USA
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Okamoto K, Nakashima T, Shinohara M, Negishi-Koga T, Komatsu N, Terashima A, Sawa S, Nitta T, Takayanagi H. Osteoimmunology: The Conceptual Framework Unifying the Immune and Skeletal Systems. Physiol Rev 2017; 97:1295-1349. [DOI: 10.1152/physrev.00036.2016] [Citation(s) in RCA: 241] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 03/29/2017] [Accepted: 04/04/2017] [Indexed: 12/13/2022] Open
Abstract
The immune and skeletal systems share a variety of molecules, including cytokines, chemokines, hormones, receptors, and transcription factors. Bone cells interact with immune cells under physiological and pathological conditions. Osteoimmunology was created as a new interdisciplinary field in large part to highlight the shared molecules and reciprocal interactions between the two systems in both heath and disease. Receptor activator of NF-κB ligand (RANKL) plays an essential role not only in the development of immune organs and bones, but also in autoimmune diseases affecting bone, thus effectively comprising the molecule that links the two systems. Here we review the function, gene regulation, and signal transduction of osteoimmune molecules, including RANKL, in the context of osteoclastogenesis as well as multiple other regulatory functions. Osteoimmunology has become indispensable for understanding the pathogenesis of a number of diseases such as rheumatoid arthritis (RA). We review the various osteoimmune pathologies, including the bone destruction in RA, in which pathogenic helper T cell subsets [such as IL-17-expressing helper T (Th17) cells] induce bone erosion through aberrant RANKL expression. We also focus on cellular interactions and the identification of the communication factors in the bone marrow, discussing the contribution of bone cells to the maintenance and regulation of hematopoietic stem and progenitors cells. Thus the time has come for a basic reappraisal of the framework for understanding both the immune and bone systems. The concept of a unified osteoimmune system will be absolutely indispensable for basic and translational approaches to diseases related to bone and/or the immune system.
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Affiliation(s)
- Kazuo Okamoto
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan; Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Tokyo, Japan
| | - Tomoki Nakashima
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan; Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Tokyo, Japan
| | - Masahiro Shinohara
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan; Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Tokyo, Japan
| | - Takako Negishi-Koga
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan; Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Tokyo, Japan
| | - Noriko Komatsu
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan; Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Tokyo, Japan
| | - Asuka Terashima
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan; Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Tokyo, Japan
| | - Shinichiro Sawa
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan; Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Tokyo, Japan
| | - Takeshi Nitta
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan; Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Tokyo, Japan
| | - Hiroshi Takayanagi
- Department of Osteoimmunology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan; Department of Cell Signaling, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), Tokyo, Japan; Japan Agency for Medical Research and Development, Core Research for Evolutional Science and Technology (AMED-CREST), Tokyo, Japan
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Roato I, Massè A, Piana R, Ferracini R. Bone Metastasis from Solid Tumors: Biologic and Clinical State of the Art. Clin Rev Bone Miner Metab 2017. [DOI: 10.1007/s12018-017-9233-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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