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Xiong M, Feng Y, Luo C, Guo J, Zeng J, Deng L, Xiao Q. Teriparatide: an innovative and promising strategy for protecting the blood-spinal cord barrier following spinal cord injury. Front Pharmacol 2024; 15:1386565. [PMID: 38770002 PMCID: PMC11103009 DOI: 10.3389/fphar.2024.1386565] [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: 02/15/2024] [Accepted: 04/22/2024] [Indexed: 05/22/2024] Open
Abstract
The blood-spinal cord barrier (BSCB) is disrupted within minutes of spinal cord injury, leading to increased permeability and secondary spinal cord injury, resulting in more severe neurological damage. The preservation of blood-spinal cord barrier following spinal cord injury plays a crucial role in determining the prognosis. Teriparatide, widely used in clinical treatment for osteoporosis and promoting fracture healing, has been found in our previous study to have the effect of inhibiting the expression of MMP9 and alleviating blood-brain barrier disruption after ischemic stroke, thereby improving neurological damage symptoms. However, there are limited research on whether it has the potential to improve the prognosis of spinal cord injury. This article summarizes the main pathological mechanisms of blood-spinal cord barrier disruption after spinal cord injury and its relationship with Teriparatide, and explores the therapeutic potential of Teriparatide in improving the prognosis of spinal cord injury by reducing blood-spinal cord barrier disruption.
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Affiliation(s)
| | | | | | | | | | | | - Qiang Xiao
- Department of Orthopedics, Jiangxi Provincial People’s Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
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Huang J, Wu T, Jiang YR, Zheng XQ, Wang H, Liu H, Wang H, Leng HJ, Fan DW, Yuan WQ, Song CL. β-Receptor blocker enhances the anabolic effect of PTH after osteoporotic fracture. Bone Res 2024; 12:18. [PMID: 38514644 PMCID: PMC10958005 DOI: 10.1038/s41413-024-00321-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 02/07/2024] [Accepted: 02/15/2024] [Indexed: 03/23/2024] Open
Abstract
The autonomic nervous system plays a crucial role in regulating bone metabolism, with sympathetic activation stimulating bone resorption and inhibiting bone formation. We found that fractures lead to increased sympathetic tone, enhanced osteoclast resorption, decreased osteoblast formation, and thus hastened systemic bone loss in ovariectomized (OVX) mice. However, the combined administration of parathyroid hormone (PTH) and the β-receptor blocker propranolol dramatically promoted systemic bone formation and osteoporotic fracture healing in OVX mice. The effect of this treatment is superior to that of treatment with PTH or propranolol alone. In vitro, the sympathetic neurotransmitter norepinephrine (NE) suppressed PTH-induced osteoblast differentiation and mineralization, which was rescued by propranolol. Moreover, NE decreased the PTH-induced expression of Runx2 but enhanced the expression of Rankl and the effect of PTH-stimulated osteoblasts on osteoclastic differentiation, whereas these effects were reversed by propranolol. Furthermore, PTH increased the expression of the circadian clock gene Bmal1, which was inhibited by NE-βAR signaling. Bmal1 knockdown blocked the rescue effect of propranolol on the NE-induced decrease in PTH-stimulated osteoblast differentiation. Taken together, these results suggest that propranolol enhances the anabolic effect of PTH in preventing systemic bone loss following osteoporotic fracture by blocking the negative effects of sympathetic signaling on PTH anabolism.
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Affiliation(s)
- Jie Huang
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
| | - Tong Wu
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
| | - Yi-Rong Jiang
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
| | - Xuan-Qi Zheng
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
| | - Huan Wang
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
| | - Hao Liu
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
| | - Hong Wang
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
- Beijing Key Laboratory of Spinal Disease, 100191, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, 100191, Beijing, China
| | - Hui-Jie Leng
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
- Beijing Key Laboratory of Spinal Disease, 100191, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, 100191, Beijing, China
| | - Dong-Wei Fan
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
- Beijing Key Laboratory of Spinal Disease, 100191, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, 100191, Beijing, China
| | - Wan-Qiong Yuan
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China
- Beijing Key Laboratory of Spinal Disease, 100191, Beijing, China
- Engineering Research Center of Bone and Joint Precision Medicine, 100191, Beijing, China
| | - Chun-Li Song
- Department of Orthopedics, Peking University Third Hospital, 100191, Beijing, China.
- Beijing Key Laboratory of Spinal Disease, 100191, Beijing, China.
- Engineering Research Center of Bone and Joint Precision Medicine, 100191, Beijing, China.
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Ren Y, Zhang S, Weeks J, Rangel-Moreno J, He B, Xue T, Rainbolt J, Morita Y, Shu Y, Liu Y, Kates SL, Schwarz EM, Xie C. Reduced angiogenesis and delayed endochondral ossification in CD163 -/- mice highlights a role of M2 macrophages during bone fracture repair. J Orthop Res 2023; 41:2384-2393. [PMID: 36970754 PMCID: PMC10522791 DOI: 10.1002/jor.25564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 02/24/2023] [Accepted: 03/24/2023] [Indexed: 04/10/2023]
Abstract
While recent studies showed that macrophages are critical for bone fracture healing, and lack of M2 macrophages have been implicated in models of delayed union, functional roles for specific M2 receptors have yet to be defined. Moreover, the M2 scavenger receptor CD163 has been identified as a target to inhibit sepsis following implant-associated osteomyelitis, but potential adverse effects on bone healing during blockage therapy have yet to be explored. Thus, we investigated fracture healing in C57BL/6 versus CD163-/- mice using a well-established closed, stabilized, mid-diaphyseal femur fracture model. While gross fracture healing in CD163-/- mice was similar to that of C57BL/6, plain radiographs revealed persistent fracture gaps in the mutant mice on Day 14, which resolved by Day 21. Consistently, 3D vascular micro-CT demonstrated delayed union on Day 21, with reduced bone volume (74%, 61%, and 49%) and vasculature (40%, 40%, and 18%) compared to C57BL/6 on Days 10, 14, and 21 postfracture, respectively (p < 0.01). Histology confirmed large amounts of persistent cartilage in CD163-/- versus C57BL/6 fracture callus on Days 7 and 10 that resolves over time, and immunohistochemistry demonstrated deficiencies in CD206+ M2 macrophages. Torsion testing of the fractures confirmed the delayed early union in CD163-/- femurs, which display decreased yield torque on Day 21, and a decreased rigidity with a commensurate increase in rotation at yield on Day 28 (p < 0.01). Collectively, these results demonstrate that CD163 is required for normal angiogenesis, callus formation, and bone remodeling during fracture healing, and raise potential concerns about CD163 blockade therapy.
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Affiliation(s)
- Youliang Ren
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
| | - Shiyang Zhang
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
| | - Jason Weeks
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
| | - Javier Rangel-Moreno
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Bin He
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
| | - Thomas Xue
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
| | - Joshua Rainbolt
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
| | - Yugo Morita
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
| | - Ye Shu
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
| | - Yuting Liu
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
| | - Stephen L. Kates
- Department of Orthopaedic Surgery, Virginia Commonwealth University, Richmond, VA, USA
| | - Edward M. Schwarz
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
| | - Chao Xie
- Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, USA
- Department of Orthopaedics and Rehabilitation, University of Rochester Medical Center, Rochester, NY, USA
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Zhou K, Yuan L, Liu H, Du X, Yao Y, Qin L, Yang M, Xu K, Wu X, Wang L, Xiang Y, Qu X, Qin X, Liu C. ITGB4 deficiency in airway epithelia enhances HDM-induced airway inflammation through hyperactivation of TLR4 signaling pathway. J Leukoc Biol 2023; 113:216-227. [PMID: 36822178 DOI: 10.1093/jleuko/qiac013] [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: 04/28/2022] [Indexed: 01/18/2023] Open
Abstract
Airway epithelial cells (AECs) are the first cell barrier of the respiratory system against external stimuli that play a critical role in the development of asthma. It is known that AECs play a key role in asthma susceptibility and severity. ITGB4 is a downregulated adhesion molecule in the airway epithelia of asthma patients, which was involved in the exaggerated lung inflammation after allergy stimulation. Toll-like receptor 4 (TLR4) in AECs has also been shown to play a crucial role in the development of lung inflammation in asthma patients. However, the specific intrinsic regulatory mechanism of TLR4 in AECs are still obscure. In this article, we demonstrated that ITGB4 deficiency in AECs enhances HDM-induced airway inflammation through hyperactivation of the TLR4 signaling pathway, which is mediated by inhibition of FYN phosphorylation. Moreover, TLR4-antagonist treatment or blockade of FYN can inhibit or exaggerate lung inflammation in HDM-stressed ITGB4-deficient mice, separately. Together, these results demonstrated that ITGB4 deficiency in AECs enhances HDM-induced lung inflammatory response through the ITGB4-FYN-TLR4 axis, which may provide new therapeutic approaches for the management of lung inflammation in asthma.
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Affiliation(s)
- Kai Zhou
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
- Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Lin Yuan
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
- Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Huijun Liu
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Xizi Du
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Ye Yao
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Ling Qin
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
- Basic and Clinical Research Laboratory of Major Respiratory Diseases, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Ming Yang
- Centre for Asthma and Respiratory Disease, School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, University of Newcastle and Hunter Medical Research Institute, Elizabeth Street, Callaghan, New South Wales 2892921, Australia
| | - Kun Xu
- School of Public Health, Jilin University, Xinmin Dajie Street, Changchun 130000, China
| | - Xinyu Wu
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Leyuan Wang
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Yang Xiang
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Xiangping Qu
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Xiaoqun Qin
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
| | - Chi Liu
- Department of Respiratory Medicine, National Clinical Research Center for Respiratory Diseases, Xiangya Hospital, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
- Department of Physiology, School of Basic Medicine Science, Central South University, Xiangya Road Street, Changsha, Hunan 410078, China
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Liang X, Li SR, Zhang XX, He SH, Li SS, Li TF. Teriparatide prevented synovial inflammation and cartilage destruction in mice with DMM. Connect Tissue Res 2022; 64:274-284. [PMID: 36537662 DOI: 10.1080/03008207.2022.2157723] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AIM Emerging data have demonstrated that low-grade inflammation in osteoarthritis, a long-held degenerative disease. The inflamed synovium produces various cytokines that induce cartilage destruction and joint pain. A previous study showed that teriparatide, an FDA approved anti-osteoporotic drug, may enhance cartilage repair. Our study focuses on its role in OA synovitis. MATERIALS AND METHODS Primary mouse articular chondrocytes were used to determine the most potent cytokines involved in OA inflammation and cartilage destruction. A destabilization of the medial meniscus mouse model was established to investigate the effect of teriparatide in OA, particularly, on synovial inflammation and cartilage degradation. RESULTS In vitro experiments showed that TNF-α was the most potent inducer of cartilage matrix-degrading enzymes, and that teriparatide antagonized the TNF-α of effect. Consistently, articular cartilage samples from TNF-α transgenic mice contained more MMP-13 positive chondrocytes than those from wild type mice. In addition, more type II collagen was cleaved in human OA cartilage than in normal cartilage samples. CONCLUSIONS Teriparatide can prevent synovitis and cartilage degradation by suppressing TNF-α mediated MMP-13 overexpression. Together with its chondroregenerative capability, teriparatide may be the first effective disease modifying osteoarthritis drug.
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Affiliation(s)
| | | | - Xin-Xin Zhang
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Shi-Hao He
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Shan-Shan Li
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Tian-Fang Li
- Department of Rheumatology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
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Abstract
PURPOSE OF REVIEW The periosteum, the outer layer of bone, is a major source of skeletal stem/progenitor cells (SSPCs) for bone repair. Here, we discuss recent findings on the characterization, role, and regulation of periosteal SSPCs (pSSPCs) during bone regeneration. RECENT FINDINGS Several markers have been described for pSSPCs but lack tissue specificity. In vivo lineage tracing and transcriptomic analyses have improved our understanding of pSSPC functions during bone regeneration. Bone injury activates pSSPCs that migrate, proliferate, and have the unique potential to form both bone and cartilage. The injury response of pSSPCs is controlled by many signaling pathways including BMP, FGF, Notch, and Wnt, their metabolic state, and their interactions with the blood clot, nerve fibers, blood vessels, and macrophages in the fracture environment. Periosteal SSPCs are essential for bone regeneration. Despite recent advances, further studies are required to elucidate pSSPC heterogeneity and plasticity that make them a central component of the fracture healing process and a prime target for clinical applications.
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Affiliation(s)
- Simon Perrin
- Univ Paris Est Creteil, INSERM, IMRB, F-94010, Creteil, France
| | - Céline Colnot
- Univ Paris Est Creteil, INSERM, IMRB, F-94010, Creteil, France.
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Kigera JW, Gichangi PB, Abdelmalek AK, Ogeng'o JA. Age related effects of selective and non-selective COX-2 inhibitors on bone healing. J Clin Orthop Trauma 2022; 25:101763. [PMID: 35211371 PMCID: PMC8847834 DOI: 10.1016/j.jcot.2022.101763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/18/2021] [Accepted: 01/08/2022] [Indexed: 01/14/2023] Open
Abstract
INTRODUCTION Fractures are increasing worldwide and with an aging population, are frequent in the elderly. The healing of fractures progresses through various phases including the inflammatory stage. Aging is associated with slower healing and the use of non steroidal anti-inflammatory drugs (NSAIDs) may interrupt bone healing processes. We designed a study to compare the effect of diclofenac and celecoxib on fracture callus histomorphometry in a rat model of different age groups. METHODS Using 5 and 15 month old rats, fractures were induced on the left tibia and the animals allocated to receive one of the drugs. Animals were sacrificed at day 21 and 42 and the fracture callus harvested for processing and histological evaluation. Tissue proportions and histological grades were determined and compared across the groups. RESULTS Across all groups, the histological grade increased with time and animals in the young diclofenac group had the highest grade at day 42 (p = 0.004). The proportion of bone increased in all groups and was highest in the young diclofenac group at day 21 and day 42 (p = 0.003). Post hoc analysis showed that the young celecoxib and old celecoxib groups had the least proportion of bone (p = 0.032 and p = 0.003). The proportion of cartilage reduced in all groups at both time points. CONCLUSION Celecoxib was associated with lower histological grade and lower proportion of bone in older animals. We urge for caution regarding the use of celecoxib in older people for the management of pain associated with fractures. Diclofenac may be a better option in this group.
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Bao J, Qian Z, Liu L, Hong X, Che H, Wu X. Pharmacological Disruption of Phosphorylated Eukaryotic Initiation Factor-2α/Activating Transcription Factor 4/Indian Hedgehog Protects Intervertebral Disc Degeneration via Reducing the Reactive Oxygen Species and Apoptosis of Nucleus Pulposus Cells. Front Cell Dev Biol 2021; 9:675486. [PMID: 34164397 PMCID: PMC8215438 DOI: 10.3389/fcell.2021.675486] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 04/20/2021] [Indexed: 12/29/2022] Open
Abstract
Excessive reactive oxygen species (ROS) and apoptosis in nucleus pulposus (NP) cells accelerate the process of intervertebral disc degeneration (IDD). Here, we integrated pathological samples and in vitro and in vivo framework to investigate the impact of phosphorylation of eukaryotic initiation factor-2α (eIF2α)/activating transcription factor 4 (ATF4)/Indian hedgehog (Ihh) signaling in the IDD. From the specimen analysis of the IDD patients, we found phosphorylated eIF2α (p-eIF2α), ATF4 and Ihh protein levels were positively related while the NP tissue went degenerative. In vitro, tumor necrosis factor (TNF)-α caused the NP cell degeneration and induced a cascade of upregulation of p-eIF2α, ATF4, and Ihh. Interestingly, ATF4 could enhance Ihh expression through binding its promoter region, and silencing of ATF4 decreased Ihh and protected the NP cells from degeneration. Moreover, ISRIB inhibited the p-eIF2α, which resulted in a suppression of ATF4/Ihh, and alleviated the TNF-α-induced ROS production and apoptosis of NP cells. On the contrary, further activating p-eIF2α aggravated the NP cell degeneration, with amplification of ATF4/Ihh and a higher level of ROS and apoptosis. Additionally, applying cyclopamine (CPE) to suppress Ihh was efficient to prevent NP cell apoptosis but did not decrease the ROS level. In an instability-induced IDD model in mice, ISRIB suppressed p-eIF2α/ATF4/Ihh and prevented IDD via protecting the anti-oxidative enzymes and decreased the NP cell apoptosis. CPE prevented NP cell apoptosis but did not affect anti-oxidative enzyme expression. Taken together, p-eIF2α/ATF4/Ihh signaling involves the ROS level and apoptosis in NP cells, the pharmacological disruption of which may provide promising methods in preventing IDD.
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Affiliation(s)
- Junping Bao
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
| | - Zhanyang Qian
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
| | - Lei Liu
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
| | - Xin Hong
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
| | - Hui Che
- Faculty of Medicine, Medical Center, Albert-Ludwigs-University of Freiburg, Freiburg im Breisgau, Germany
| | - Xiaotao Wu
- Spine Center, The Affiliated Zhongda Hospital of Southeast University, Nanjing, China.,School of Medicine, Southeast University, Nanjing, China
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The Distinct Functions of Dopaminergic Receptors on Pain Modulation: A Narrative Review. Neural Plast 2021; 2021:6682275. [PMID: 33688340 PMCID: PMC7920737 DOI: 10.1155/2021/6682275] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 02/06/2021] [Accepted: 02/09/2021] [Indexed: 12/18/2022] Open
Abstract
Chronic pain is considered an economic burden on society as it often results in disability, job loss, and early retirement. Opioids are the most common analgesics prescribed for the management of moderate to severe pain. However, chronic exposure to these drugs can result in opioid tolerance and opioid-induced hyperalgesia. On pain modulation strategies, exploiting the multitarget drugs with the ability of the superadditive or synergistic interactions attracts more attention. In the present report, we have reviewed the analgesic effects of different dopamine receptors, particularly D1 and D2 receptors, in different regions of the central nervous system, including the spinal cord, striatum, nucleus accumbens (NAc), and periaqueductal gray (PAG). According to the evidence, these regions are not only involved in pain modulation but also express a high density of DA receptors. The findings can be categorized as follows: (1) D2-like receptors may exert a higher analgesic potency, but D1-like receptors act in different manners across several mechanisms in the mentioned regions; (2) in the spinal cord and striatum, antinociception of DA is mainly mediated by D2-like receptors, while in the NAc and PAG, both D1- and D2-like receptors are involved as analgesic targets; and (3) D2-like receptor agonists can act as adjuvants of μ-opioid receptor agonists to potentiate analgesic effects and provide a better approach to pain relief.
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Banakh I, Cheshire P, Rahman M, Carmichael I, Jagadeesan P, Cameron NR, Cleland H, Akbarzadeh S. A Comparative Study of Engineered Dermal Templates for Skin Wound Repair in a Mouse Model. Int J Mol Sci 2020; 21:ijms21124508. [PMID: 32630398 PMCID: PMC7350005 DOI: 10.3390/ijms21124508] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 02/07/2023] Open
Abstract
Engineered dermal templates have revolutionised the repair and reconstruction of skin defects. Their interaction with the wound microenvironment and linked molecular mediators of wound repair is still not clear. This study investigated the wound bed and acellular "off the shelf" dermal template interaction in a mouse model. Full-thickness wounds in nude mice were grafted with allogenic skin, and either collagen-based or fully synthetic dermal templates. Changes in the wound bed showed significantly higher vascularisation and fibroblast infiltration in synthetic grafts when compared to collagen-based grafts (P ≤ 0.05). Greater tissue growth was associated with higher prostaglandin-endoperoxide synthase 2 (Ptgs2) RNA and cyclooxygenase-2 (COX-2) protein levels in fully synthetic grafts. Collagen-based grafts had higher levels of collagen III and matrix metallopeptidase 2. To compare the capacity to form a double layer skin substitute, both templates were seeded with human fibroblasts and keratinocytes (so-called human skin equivalent or HSE). Mice were grafted with HSEs to test permanent wound closure with no further treatment required. We found the synthetic dermal template to have a significantly greater capacity to support human epidermal cells. In conclusion, the synthetic template showed advantages over the collagen-based template in a short-term mouse model of wound repair.
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Affiliation(s)
- Ilia Banakh
- Skin Bioengineering Laboratory, Victorian Adult Burns Service, Alfred Health, 89 Commercial Road, Melbourne VIC 3004, Australia; (I.B.); (P.C.); (M.R.); (H.C.)
- Department of Surgery, Monash University, 99 Commercial Road, Melbourne VIC 3004, Australia
| | - Perdita Cheshire
- Skin Bioengineering Laboratory, Victorian Adult Burns Service, Alfred Health, 89 Commercial Road, Melbourne VIC 3004, Australia; (I.B.); (P.C.); (M.R.); (H.C.)
- Department of Surgery, Monash University, 99 Commercial Road, Melbourne VIC 3004, Australia
| | - Mostafizur Rahman
- Skin Bioengineering Laboratory, Victorian Adult Burns Service, Alfred Health, 89 Commercial Road, Melbourne VIC 3004, Australia; (I.B.); (P.C.); (M.R.); (H.C.)
- Department of Surgery, Monash University, 99 Commercial Road, Melbourne VIC 3004, Australia
| | - Irena Carmichael
- Monash Micro Imaging, Monash University, 99 Commercial Road, Melbourne VIC 3004, Australia;
| | - Premlatha Jagadeesan
- Material Materials Science and Engineering, Monash University, 22 Alliance Lane, Clayton VIC 3800, Australia; (P.J.); (N.R.C.)
| | - Neil R. Cameron
- Material Materials Science and Engineering, Monash University, 22 Alliance Lane, Clayton VIC 3800, Australia; (P.J.); (N.R.C.)
| | - Heather Cleland
- Skin Bioengineering Laboratory, Victorian Adult Burns Service, Alfred Health, 89 Commercial Road, Melbourne VIC 3004, Australia; (I.B.); (P.C.); (M.R.); (H.C.)
- Department of Surgery, Monash University, 99 Commercial Road, Melbourne VIC 3004, Australia
| | - Shiva Akbarzadeh
- Skin Bioengineering Laboratory, Victorian Adult Burns Service, Alfred Health, 89 Commercial Road, Melbourne VIC 3004, Australia; (I.B.); (P.C.); (M.R.); (H.C.)
- Department of Surgery, Monash University, 99 Commercial Road, Melbourne VIC 3004, Australia
- Correspondence: ; Tel.: +61-3-9903-0616
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Che H, Li J, Li Y, Ma C, Liu H, Qin J, Dong J, Zhang Z, Xian CJ, Miao D, Wang L, Ren Y. p16 deficiency attenuates intervertebral disc degeneration by adjusting oxidative stress and nucleus pulposus cell cycle. eLife 2020; 9:52570. [PMID: 32125276 PMCID: PMC7065909 DOI: 10.7554/elife.52570] [Citation(s) in RCA: 95] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 02/12/2020] [Indexed: 12/20/2022] Open
Abstract
The cell cycle regulator p16 is known as a biomarker and an effector of aging. However, its function in intervertebral disc degeneration (IVDD) is unclear. In this study, p16 expression levels were found to be positively correlated with the severity of human IVDD. In a mouse tail suspension (TS)-induced IVDD model, lumbar intervertebral disc height index and matrix protein expression levels were reduced significantly were largely rescued by p16 deletion. In TS mouse discs, reactive oxygen species levels, proportions of senescent cells, and the senescence-associated secretory phenotype (SASP) were all increased, cell cycling was delayed, and expression was downregulated for Sirt1, superoxide dismutase 1/2, cyclin-dependent kinases 4/6, phosphorylated retinoblastoma protein, and transcription factor E2F1/2. However, these effects were rescued by p16 deletion. Our results demonstrate that p16 plays an important role in IVDD pathogenesis and that its deletion attenuates IVDD by promoting cell cycle and inhibiting SASP, cell senescence, and oxidative stress. Neck and shoulder pain, lower back pain and leg numbness are conditions that many people will encounter as years go by. This is because intervertebral discs, the padding structures that fit between the bones in the spine, degenerate with age: their cells enter a ‘senescent’, inactive state, and stop multiplying. A protein known as p16, an important regulator of cell growth and division, is known to accumulate in senescent cells. In fact, in mouse fat tissue, muscles or eyes, removing the cells that contain high levels of p16 delays aging-associated disorders. However, it was still unknown whether deactivating the gene that codes p16 in senescent cells could delay disc degeneration. Here, Che, Li et al. discovered that p16 is highly present in the senescent cells of severely degenerated human intervertebral discs. The cells in the nucleus pulposus, the jelly-like and most critical tissue in the intervertebral discs, were extracted and grown in the lab under conditions that replicate the early stages of damage to the spine. Drugs and genetic manipulations were then used to decrease the amount of p16 in these cells. The experiments showed that reducing the levels of p16 results in the senescent cells multiplying more and showing fewer signs of damage and aging. In addition, the discs of mice in which the gene that codes for p16 had been deleted were less prone to degeneration compared to ‘normal’ mice in similar conditions. Overall, the work by Che, Li et al. shows that inhibiting p16 in disc cells delays the aging process and reduces the degeneration of intervertebral discs. These findings may one day be applicable to people with intervertebral disc diseases who, for example, could potentially benefit from a gene therapy targeting the cells which produce p16.
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Affiliation(s)
- Hui Che
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,University Medical Center, Albert-Ludwigs-University, Freiburg, Germany
| | - Jie Li
- Department of Orthopaedics, Xuzhou Central Hospital, Xuzhou Clinical College of Nanjing Medical University, The Affiliated Xuzhou Hospital of Southeast University, Xuzhou, China
| | - You Li
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Cheng Ma
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Huan Liu
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.,The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Jingyi Qin
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China
| | - Jianghui Dong
- Department of Hand Surgery, Department of Plastic Reconstructive Surgery, Ningbo, China.,School of Pharmacy and Medical Sciences and UniSA Cancer Research Institute, University of South Australia, Adelaide, Australia
| | - Zhen Zhang
- Department of Hand Surgery, Department of Plastic Reconstructive Surgery, Ningbo, China
| | - Cory J Xian
- School of Pharmacy and Medical Sciences and UniSA Cancer Research Institute, University of South Australia, Adelaide, Australia
| | - Dengshun Miao
- State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, China
| | - Liping Wang
- Department of Hand Surgery, Department of Plastic Reconstructive Surgery, Ningbo, China.,School of Pharmacy and Medical Sciences and UniSA Cancer Research Institute, University of South Australia, Adelaide, Australia
| | - Yongxin Ren
- Department of Orthopaedics, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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12
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Gruber R. Osteoimmunology: Inflammatory osteolysis and regeneration of the alveolar bone. J Clin Periodontol 2019; 46 Suppl 21:52-69. [PMID: 30623453 DOI: 10.1111/jcpe.13056] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/09/2018] [Accepted: 12/06/2018] [Indexed: 02/06/2023]
Abstract
AIM Osteoimmunology covers the cellular and molecular mechanisms responsible for inflammatory osteolysis that culminates in the degradation of alveolar bone. Osteoimmunology also focuses on the interplay of immune cells with bone cells during bone remodelling and regeneration. The aim of this review was to provide insights into how osteoimmunology affects alveolar bone health and disease. METHOD This review is based on a narrative approach to assemble mouse models that provide insights into the cellular and molecular mechanisms causing inflammatory osteolysis and on the impact of immune cells on alveolar bone regeneration. RESULTS Mouse models have revealed the molecular pathways by which microbial and other factors activate immune cells that initiate an inflammatory response. The inflammation-induced alveolar bone loss occurs with the concomitant suppression of bone formation. Mouse models also showed that immune cells contribute to the resolution of inflammation and bone regeneration, even though studies with a focus on alveolar socket healing are rare. CONCLUSIONS Considering that osteoimmunology is evolutionarily conserved, osteolysis removes the cause of inflammation by provoking tooth loss. The impact of immune cells on bone regeneration is presumably a way to reinitiate the developmental mechanisms of intramembranous and endochondral bone formation.
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Affiliation(s)
- Reinhard Gruber
- Department of Oral Biology, Medical University of Vienna, Vienna, Austria.,Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
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13
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Jiang HT, Ran CC, Liao YP, Zhu JH, Wang H, Deng R, Nie M, He BC, Deng ZL. IGF-1 reverses the osteogenic inhibitory effect of dexamethasone on BMP9-induced osteogenic differentiation in mouse embryonic fibroblasts via PI3K/AKT/COX-2 pathway. J Steroid Biochem Mol Biol 2019; 191:105363. [PMID: 31018166 DOI: 10.1016/j.jsbmb.2019.04.012] [Citation(s) in RCA: 20] [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: 10/11/2018] [Revised: 03/19/2019] [Accepted: 04/09/2019] [Indexed: 02/08/2023]
Abstract
Glucocorticoid-Induced Osteoporosis (GIOP) is a prevalent clinical complication caused by large dose administration of glucocorticoids, such as Dexamethasone (Dex) and Prednisone. GIOP may lead to fractures and even Osteonecrosis of the Femoral Head (ONFH). It has been reported that glucocorticoids inhibit osteogenesis via the suppression of osteogenic differentiation in Mesenchymal Stem Cells (MSCs), but the precise mechanism underlying this suppression awaits further investigation. Meanwhile, novel and efficacious therapies are recommended to cope with GIOP. In this study, we demonstrated that Dex had the inhibitory effect on Bone Morphogenetic Protein 9 (BMP9)-induced ALP activities and matrix mineralization in Mouse Embryonic Fibroblasts (MEFs). In addition, the study confirmed that Dex decreased the expression of osteogenic markers such as Runx2 and OPN. However, the inhibitory effect of Dex on these osteogenic markers can be reversed when combined with insulin-like growth factor 1 (IGF-1). Regarding the inhibitory mechanism, we found that the level of AKT and p-AKT can be decreased by Dex and that Ly294002, the PI3K inhibitor, can block the reversal effect of IGF-1. Moreover, the knockdown or inhibition of COX-2 produced similar results to those of Ly294002. Our findings indicated that IGF-1 may reverse the osteogenic inhibitory effect of Dex via PI3K/AKT pathway, which may be associated with the up-regulation of COX-2. This study may provide new clinical management strategy for GIOP cases.
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Affiliation(s)
- Hai-Tao Jiang
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, PR China; Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China
| | - Cheng-Cheng Ran
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, PR China; Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China
| | - Yun-Peng Liao
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China; Department of Pharmacology, School of Pharmacy, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China
| | - Jia-Hui Zhu
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China; Department of Pharmacology, School of Pharmacy, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China
| | - Han Wang
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China; Department of Pharmacology, School of Pharmacy, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China
| | - Rui Deng
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, PR China
| | - Mao Nie
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, PR China
| | - Bai-Cheng He
- Chongqing Key Laboratory of Biochemistry and Molecular Pharmacology, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China; Department of Pharmacology, School of Pharmacy, Chongqing Medical University, No. 1 Yixueyuan Road, Yuzhong District, Chongqing 400010, PR China
| | - Zhong-Liang Deng
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, PR China.
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14
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Yukata K, Kanchiku T, Egawa H, Nakamura M, Nishida N, Hashimoto T, Ogasa H, Taguchi T, Yasui N. Continuous infusion of PTH 1-34 delayed fracture healing in mice. Sci Rep 2018; 8:13175. [PMID: 30181648 PMCID: PMC6123430 DOI: 10.1038/s41598-018-31345-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 08/17/2018] [Indexed: 01/19/2023] Open
Abstract
Hyperparathyroidism, which is increased parathyroid hormone (PTH) levels in the blood, could cause delayed or non-union of bone fractures. But, no study has yet demonstrated the effects of excess continuous PTH exposure, such as that seen in hyperparathyroidism, for fracture healing. Continuous human PTH1–34 (teriparatide) infusion using an osmotic pump was performed for stabilized tibial fractures in eight-week-old male mice to determine the relative bone healing process compared with saline treatment. Radiographs and micro-computed tomography showed delayed but increased calcified callus formation in the continuous PTH1–34 infusion group compared with the controls. Histology and quantitative histomorphometry confirmed that continuous PTH1–34 treatment significantly increased the bone callus area at a later time point after fracture, since delayed endochondral ossification occurred. Gene expression analyses showed that PTH1–34 resulted in sustained Col2a1 and reduced Col10a1 expression, consistent with delayed maturation of the cartilage tissue during fracture healing. In contrast, continuous PTH1–34 infusion stimulated the expression of both Bglap and Acp5 through the healing process, in accordance with bone callus formation and remodeling. Mechanical testing showed that continuously administered PTH1–34 increased the maximum load on Day 21 compared with control mice. We concluded that continuous PTH1–34 infusion resulted in a delayed fracture healing process due to delayed callus cell maturation but ultimately increased biomechanical properties.
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Affiliation(s)
- Kiminori Yukata
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan. .,Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan.
| | - Tsukasa Kanchiku
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Hiroshi Egawa
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - Michihiro Nakamura
- Department of Organ Anatomy, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Norihiro Nishida
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Takahiro Hashimoto
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Hiroyoshi Ogasa
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Toshihiko Taguchi
- Department of Orthopedic Surgery, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Natsuo Yasui
- Department of Orthopedics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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