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Alruwaili N, Kandhi S, Froogh G, Kelly MR, Sun D, Wolin MS. Superoxide-Mediated Upregulation of MMP9 Participates in BMPR2 Destabilization and Pulmonary Hypertension Development. Antioxidants (Basel) 2023; 12:1961. [PMID: 38001814 PMCID: PMC10669489 DOI: 10.3390/antiox12111961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/25/2023] [Accepted: 10/31/2023] [Indexed: 11/26/2023] Open
Abstract
BACKGROUND AND AIMS we previously reported in studies on organoid-cultured bovine pulmonary arteries that pulmonary hypertension (PH) conditions of exposure to hypoxia or endothelin-1 caused a loss of a cartilage oligomeric matrix protein (COMP) stabilization of bone morphogenetic protein receptor-2 (BMPR2) function, a known key process contributing to pulmonary hypertension development. Based on subsequent findings, these conditions were associated with an extracellular superoxide-mediated increase in matrix metalloproteinase 9 (MMP-9) expression. We investigated if this contributed to PH development using mice deficient in MMP9. RESULTS wild-type (WT) mice exposed to Sugen/Hypoxia (SuHx) to induce PH had increased levels of MMP9 in their lungs. Hemodynamic measures from MMP9 knockout mice (MMP9 KO) indicated they had attenuated PH parameters compared to WT mice based on an ECHO assessment of pulmonary artery pressure, right ventricular systolic pressure, and Fulton index hypertrophy measurements. In vitro vascular reactivity studies showed impaired endothelium-dependent and endothelium-independent NO-associated vasodilatory responses in the pulmonary arteries of SuHx mice and decreased lung levels of COMP and BMPR2 expression. These changes were attenuated in MMP9 KO mice potentially through preserving COMP-dependent stabilization of BMPR2. INNOVATION this study supports a new function of superoxide in increasing MMP9 and the associated impairment of BMPR2 in promoting PH development which could be a target for future therapies. CONCLUSION superoxide, through promoting increases in MMP9, mediates BMPR2 depletion and its consequent control of vascular function in response to PH mediators and the SuHx mouse model of PH.
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Affiliation(s)
- Norah Alruwaili
- Department of Physiology, New York Medical College, Valhalla, NY 10595, USA; (N.A.); (D.S.)
- Department of Basic Sciences, College of Science and Health Professions, King Saud Bin Abdulaziz for Health Sciences, Riyadh 11481, Saudi Arabia
| | - Sharath Kandhi
- Department of Physiology, New York Medical College, Valhalla, NY 10595, USA; (N.A.); (D.S.)
| | - Ghezal Froogh
- Department of Physiology, New York Medical College, Valhalla, NY 10595, USA; (N.A.); (D.S.)
| | - Melissa R. Kelly
- Department of Physiology, New York Medical College, Valhalla, NY 10595, USA; (N.A.); (D.S.)
| | - Dong Sun
- Department of Physiology, New York Medical College, Valhalla, NY 10595, USA; (N.A.); (D.S.)
| | - Michael S. Wolin
- Department of Physiology, New York Medical College, Valhalla, NY 10595, USA; (N.A.); (D.S.)
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Cai X, Li M, Zhong Y, Yang W, Liang Z. COMP Improves Ang-II-Induced Atrial Fibrillation via TGF-β Signaling Pathway. Cardiovasc Toxicol 2023; 23:305-316. [PMID: 37584842 DOI: 10.1007/s12012-023-09799-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 06/27/2023] [Indexed: 08/17/2023]
Abstract
Cartilage oligomeric matrix protein (COMP) regulates transforming growth factor-β (TGF-β) signaling pathway, which has been proved to be associated with skin fibrosis and pulmonary fibrosis. Atrial fibrosis is a major factor of atrial fibrillation (AF). Nevertheless, the interaction between COMP and TGF-β as well as their role in AF remains undefined. The purpose of this study is to clarify the role of COMP in AF and explore its potential mechanism. The hub gene of AF was identified from two datasets using bioinformatics. Furthermore, it was verified by the downregulation of COMP in angiotensin-II (Ang-II)-induced AF in mice. Moreover, the effect on AF was examined using CCK8 assay, ELISA, and western blot. The involvement of TGF-β pathway was further discussed. The expression of COMP was the most significant among all these hub genes. Our experimental results revealed that the protein levels of TGF-β1, phosphorylated Smad2 (P-Smad2), and phosphorylated Smad3 (P-Smad3) were decreased after silencing COMP, which indicated that COMP knockdown could inhibit the activation of TGF-β pathway in AF cells. However, the phenomenon was reversed when the activator SRI was added. COMP acts as a major factor and can improve Ang-II-induced AF via TGF-β signaling pathway. Thus, our research enriches the understanding of the interaction between COMP and TGF-β in AF, and provides reference for the pathogenesis and diagnosis of AF.
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Affiliation(s)
- XiaoBi Cai
- Department of Cardiovascular Surgery, The Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue South, Xiashan District, Zhangjian City, 524001, Guangdong Province, China
| | - Mingliang Li
- Department of Cardiovascular Surgery, The Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue South, Xiashan District, Zhangjian City, 524001, Guangdong Province, China
| | - Ying Zhong
- Department of Cardiovascular Surgery, The Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue South, Xiashan District, Zhangjian City, 524001, Guangdong Province, China
| | - Wenkun Yang
- Department of Cardiovascular Surgery, The Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue South, Xiashan District, Zhangjian City, 524001, Guangdong Province, China
| | - Zhu Liang
- Department of Cardiovascular and Thoracic Surgery, The Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue South, Xiashan District, Zhangjian City, 524001, Guangdong Province, China.
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Liu S, Chen Q, Zhang Q, Tao K, Li C, Chang B, Wang W, Wu Z. Electroacupuncture combined with extracorporeal shock wave therapy improves pain symptoms and inflammatory factor levels in knee osteoarthritis patients. Heliyon 2023; 9:e20771. [PMID: 37842584 PMCID: PMC10568100 DOI: 10.1016/j.heliyon.2023.e20771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 10/05/2023] [Accepted: 10/05/2023] [Indexed: 10/17/2023] Open
Abstract
Objective To compare the clinical efficacy and safety of electroacupuncture combined with extracorporeal shock wave therapy (EESWT) and extracorporeal shock wave therapy (ESWT) in the treatment of knee osteoarthritis (KOA). Methods A total of 135 KOA patients who received EESWT treatment were selected as the EESWT group, and 135 KOA patients who received extracorporeal shock wave therapy (ESWT) were selected as the ESWT group. The clinical efficacy, inflammatory factors in joint synovial fluid and adverse events during treatment were compared before and after treatment. Results The clinical effective rate of patients in the EESWT group (89.63 %) after treatment was significantly higher than that of the ESWT group (74.81 %) (p < 0.01). The lysholm kness (LKSS) score and range of motion (ROM) of the patients in the EESWT group after treatment were higher than those of the ESWT group, while Lequesne index score, visual analogue scale (VAS) score and Western Ontario and McMaster Universities Arthritis Index (WOMAC) were lower than those of the ESWT group (p < 0.01). Compared with ESWT group, the changes in the expression levels of nitric oxide (NO), superoxide dismutase (SOD), interleukin 1β (IL-1β), tumor necrosis factor-α (TNF-α), matrix metalloproteinase-3 (MMP-3), and transforming growth factor β1 (TGF-β1) in the synovial fluid of the EESWT group after treatment were significantly greater than those of the ESWT group (p < 0.01). No significant difference in the incidence of adverse events between the EESWT group and the ESWT group (p > 0.05). Conclusion EESWT significantly improves pain symptoms and inflammatory factor levels in KOA patients and is an optional KOA treatment option worthy of clinical attention.
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Affiliation(s)
- Shengfu Liu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Qiudan Chen
- Department of Central Laboratory, Clinical Laboratory, Jing'an District Center Hospital of Shanghai, Fudan University, Shanghai 200040, China
| | - Qinggang Zhang
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Kun Tao
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Changhong Li
- Second Department of Surgery, People's Hospital of Gengma Dai and Va Autonomous County, Lincang, Yunnan 677599, China
| | - Baolei Chang
- Ma Anshan No.17 Metallurgical Hospital, Ma Anshan, Anhui 243000, China
| | - Weifeng Wang
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
- Department of Laboratory Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Zhong Wu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
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Mao J, Ma L. Research progress on the mechanism of phenotypic transformation of pulmonary artery smooth muscle cells induced by hypoxia. Zhejiang Da Xue Xue Bao Yi Xue Ban 2022; 51:750-757. [PMID: 36915980 PMCID: PMC10262008 DOI: 10.3724/zdxbyxb-2022-0282] [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: 05/30/2022] [Accepted: 09/20/2022] [Indexed: 12/24/2022]
Abstract
Phenotypic transformation of pulmonary artery smooth muscle cells (PASMCs) is a key factor in pulmonary vascular remodeling. Inhibiting or reversing phenotypic transformation can inhibit pulmonary vascular remodeling and control the progression of hypoxic pulmonary hypertension. Recent studies have shown that hypoxia causes intracellular peroxide metabolism to induce oxidative stress, induces multi-pathway signal transduction, including those related to autophagy, endoplasmic reticulum stress and mitochondrial dysfunction, and also induces non-coding RNA regulation of cell marker protein expression, resulting in PASMCs phenotypic transformation. This article reviews recent research progress on mechanisms of hypoxia-induced phenotypic transformation of PASMCs, which may be helpful for finding targets to inhibit phenotypic transformation and to improve pulmonary vascular remodeling diseases such as hypoxia-induced pulmonary hypertension.
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Affiliation(s)
- Jiaqi Mao
- 1. Medical Institute of Qinghai University, Xining 810001, China
- 2. Research Center for High Altitude Medicine, Qinghai University, Xining 810001, China
| | - Lan Ma
- 2. Research Center for High Altitude Medicine, Qinghai University, Xining 810001, China
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Yu H, Alruwaili N, Kelly MR, Zhang B, Liu A, Wang Y, Sun D, Wolin MS. Endothelin-1 depletion of cartilage oligomeric matrix protein modulates pulmonary artery superoxide and iron metabolism-associated mitochondrial heme biosynthesis. Am J Physiol Lung Cell Mol Physiol 2022; 323:L400-L409. [PMID: 35943724 PMCID: PMC9484992 DOI: 10.1152/ajplung.00534.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 08/03/2022] [Accepted: 08/05/2022] [Indexed: 11/22/2022] Open
Abstract
This study examines if heme biosynthesis-associated iron metabolism is regulated in pulmonary arteries by endothelin-1 (ET1) potentially through modulating cartilage oligomeric matrix protein (COMP) availability. Our studies in organoid-cultured endothelium-rubbed bovine pulmonary arteries (BPAs) observed COMP depletion by siRNA or hypoxia increases NOX2 and superoxide and depletes mitochondrial SOD2. ET1 also increases superoxide in a manner that potentially impairs mitochondrial heme biosynthesis. In this study, organoid culture of BPA with ET1 (10 nM) increases superoxide in the mitochondrial matrix and extramitochondrial regions associated with COMP depletion, and COMP (0.5 μM) inhibited these superoxide increases. As mitochondrial matrix superoxide could impair heme biosynthesis from protoporphyrin IX (PpIX) by decreasing Fe2+ availability and/or ferrochelatase (FECH), we studied ET1, COMP, and COMP siRNA effects on the expression of FECH, transferrin receptor-1 (TfR1, an indicator of iron availability) and soluble guanylate cyclase (sGC, a key heme-dependent protein), and on measurements of PpIX (HPLC) and heme content. ET1 decreased FECH, heme, and sGC, and increased TfR1 and iron. COMP reversed these effects of ET1, and COMP decreased PpIX and increased heme in the absence of ET1. COMP siRNA increased PpIX detection and TfR1 expression and decreased the expression of FECH and sGC. Nitric oxide (spermine NONOate) relaxation of BPA was inhibited by ET1, and this was attenuated by COMP during exposure to ET1. Thus, COMP depletion by ET1 or siRNA modulates pulmonary artery iron metabolism, which results in loss of heme biosynthesis and heme-dependent cGMP mechanisms.
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Affiliation(s)
- Hang Yu
- Department of Physiology, Harbin Medical University-Daqing, Daqing, China
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Norah Alruwaili
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Melissa R Kelly
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Bin Zhang
- Department of Physiology, New York Medical College, Valhalla, New York
- Department of Gastrointestinal Surgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Aijing Liu
- Department of Physiology, Harbin Medical University-Daqing, Daqing, China
| | - Yingqi Wang
- Department of Physiology, Harbin Medical University-Daqing, Daqing, China
| | - Dong Sun
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Michael S Wolin
- Department of Physiology, New York Medical College, Valhalla, New York
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Cartilage Oligomeric Matrix Protein, Diseases, and Therapeutic Opportunities. Int J Mol Sci 2022; 23:ijms23169253. [PMID: 36012514 PMCID: PMC9408827 DOI: 10.3390/ijms23169253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/05/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Cartilage oligomeric matrix protein (COMP) is an extracellular matrix (ECM) glycoprotein that is critical for collagen assembly and ECM stability. Mutations of COMP cause endoplasmic reticulum stress and chondrocyte apoptosis, resulting in rare skeleton diseases. The bouquet-like structure of COMP allows it to act as a bridging molecule that regulates cellular phenotype and function. COMP is able to interact with many other ECM components and binds directly to a variety of cellular receptors and growth factors. The roles of COMP in other skeleton diseases, such as osteoarthritis, have been implied. As a well-established biochemical marker, COMP indicates cartilage turnover associated with destruction. Recent exciting achievements indicate its involvement in other diseases, such as malignancy, cardiovascular diseases, and tissue fibrosis. Here, we review the basic concepts of COMP and summarize its novel functions in the regulation of signaling events. These findings renew our understanding that COMP has a notable function in cell behavior and disease progression as a signaling regulator. Interestingly, COMP shows distinct functions in different diseases. Targeting COMP in malignancy may withdraw its beneficial effects on the vascular system and induce or aggravate cardiovascular diseases. COMP supplementation is a promising treatment for OA and aortic aneurysms while it may induce tissue fibrosis or cancer metastasis.
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Chen DD, Hu WP, Xie L, Xiang GL, Wu QH, Qu JM, Li SQ, Guan LH, Liu D. Serum cartilage oligomeric matrix protein is decreased in patients with pulmonary hypertension: a potential protective factor. Pulm Circ 2021; 11:0271678X20978861. [PMID: 34603688 PMCID: PMC8481745 DOI: 10.1177/20458940211031111] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 06/12/2021] [Indexed: 11/16/2022] Open
Abstract
Cartilage oligomeric matrix protein (COMP) was a protective factor in the cardiovascular system. Previous studies showed that hypoxia led to decreased COMP in rat models of pulmonary hypertension. However, the expression pattern of COMP in the pulmonary hypertension population was unclear. A total of 35 patients newly diagnosed with pulmonary hypertension and 70 controls were enrolled in the study. Circulating COMP concentrations of serum samples were measured by enzyme-linked immunosorbent assay and were analyzed the association with multiple clinical variables. Serum COMP concentrations in the pulmonary hypertension group were significantly declined in comparison with age- and sex-matched normal controls, especially in the female subgroup. No significant difference of COMP concentrations was observed in the etiological classification, heart function classification, and risk stratification. Major hemodynamic parameters, six-minute walk distance, N-terminal pro brain natriuretic peptide, and short-term prognosis were not statistically associated with COMP. However, some echocardiography parameters, like tricuspid annular plane systolic excursion and mean right atrial pressure, were found the negative relation to COMP concentrations. In conclusion, serum COMP levels were decreased in the patients with pulmonary hypertension, which was in accordance with its known biological effects. Its association with long-term prognosis was worth further exploring.
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Affiliation(s)
- Dan-Dan Chen
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Wei-Ping Hu
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Liang Xie
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Gui-Ling Xiang
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qin-Han Wu
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jie-Ming Qu
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Shan-Qun Li
- Department of Pulmonary and Critical Care Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Li-Hua Guan
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Dong Liu
- Department of Respiratory and Critical Care Medicine, Ruijin Hospital, Shanghai Jiaotong University, Shanghai, China
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The Emerging Role of Fatty Acid Synthase in Hypoxia-Induced Pulmonary Hypertensive Mouse Energy Metabolism. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9990794. [PMID: 34457121 PMCID: PMC8387195 DOI: 10.1155/2021/9990794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 06/30/2021] [Accepted: 08/10/2021] [Indexed: 11/17/2022]
Abstract
Aims This study is aimed at examining whether fatty acid synthase (FAS) can regulate mitochondrial function in hypoxia-induced pulmonary arterial hypertension (PAH) and its related mechanism. Results The expression of FAS significantly increased in the lung tissue of mice with hypoxia-induced PAH, and its pharmacological inhibition by C75 ameliorated right ventricle cardiac function as revealed by echocardiographic analysis. Based on transmission electron microscopy and Seahorse assays, the mitochondrial function of mice with hypoxia was abnormal but was partially reversed after C75 injection. In vitro studies also showed an increase in the expression of FAS in hypoxia-induced human pulmonary artery smooth muscle cells (HPASMCs), which could be attenuated by FAS shRNA as well as C75 treatment. Meanwhile, C75 treatment reversed hypoxia-induced oxidative stress and activated PI3K/AKT signaling. shRNA-mediated inhibition of FAS reduced its expression and oxidative stress levels and improved mitochondrial respiratory capacity and ATP levels of hypoxia-induced HPASMCs. Conclusions Inhibition of FAS plays a crucial role in shielding mice from hypoxia-induced PAH, which was partially achieved through the activation of PI3K/AKT signaling, indicating that the inhibition of FAS may provide a potential future direction for reversing PAH in humans.
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Redox and Inflammatory Signaling, the Unfolded Protein Response, and the Pathogenesis of Pulmonary Hypertension. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1304:333-373. [PMID: 34019276 DOI: 10.1007/978-3-030-68748-9_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Protein folding overload and oxidative stress disrupt endoplasmic reticulum (ER) homeostasis, generating reactive oxygen species (ROS) and activating the unfolded protein response (UPR). The altered ER redox state induces further ROS production through UPR signaling that balances the cell fates of survival and apoptosis, contributing to pulmonary microvascular inflammation and dysfunction and driving the development of pulmonary hypertension (PH). UPR-induced ROS production through ER calcium release along with NADPH oxidase activity results in endothelial injury and smooth muscle cell (SMC) proliferation. ROS and calcium signaling also promote endothelial nitric oxide (NO) synthase (eNOS) uncoupling, decreasing NO production and increasing vascular resistance through persistent vasoconstriction and SMC proliferation. C/EBP-homologous protein further inhibits eNOS, interfering with endothelial function. UPR-induced NF-κB activity regulates inflammatory processes in lung tissue and contributes to pulmonary vascular remodeling. Conversely, UPR-activated nuclear factor erythroid 2-related factor 2-mediated antioxidant signaling through heme oxygenase 1 attenuates inflammatory cytokine levels and protects against vascular SMC proliferation. A mutation in the bone morphogenic protein type 2 receptor (BMPR2) gene causes misfolded BMPR2 protein accumulation in the ER, implicating the UPR in familial pulmonary arterial hypertension pathogenesis. Altogether, there is substantial evidence that redox and inflammatory signaling associated with UPR activation is critical in PH pathogenesis.
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Wegner AM, Haudenschild DR. NADPH oxidases in bone and cartilage homeostasis and disease: A promising therapeutic target. J Orthop Res 2020; 38:2104-2112. [PMID: 32285964 DOI: 10.1002/jor.24693] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 03/08/2020] [Accepted: 04/06/2020] [Indexed: 02/04/2023]
Abstract
Reactive oxygen species (ROS) generated by the NADPH oxidase (Nox) enzymes are important short-range signaling molecules. They have been extensively studied in the physiology and pathophysiology of the cardiovascular system, where they have important roles in vascular inflammation, angiogenesis, hypertension, cardiac injury, stroke, and aging. Increasing evidence demonstrates that ROS and Nox enzymes also affect bone homeostasis and osteoporosis, and more recent studies implicate ROS and Nox enzymes in both inflammatory arthritis and osteoarthritis. Mechanistically, this connection may be through the effects of ROS on signal transduction. ROS affect both transforming growth factor-β/Smad signaling, interleukin-1β/nuclear factor-kappa B signaling, and the resulting changes in matrix metalloproteinase expression. The purpose of this review is to describe the role of Nox enzymes in the physiology and pathobiology of bone and joints and to highlight the potential of therapeutically targeting the Nox enzymes.
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Affiliation(s)
- Adam M Wegner
- OrthoCarolina, Winston-Salem Spine Center, Winston-Salem, North Carolina
| | - Dominik R Haudenschild
- Department of Orthopaedic Surgery, University of California Davis, School of Medicine, Sacramento, California
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Yu M, Peng L, Liu P, Yang M, Zhou H, Ding Y, Wang J, Huang W, Tan Q, Wang Y, Xie W, Kong H, Wang H. Paeoniflorin Ameliorates Chronic Hypoxia/SU5416-Induced Pulmonary Arterial Hypertension by Inhibiting Endothelial-to-Mesenchymal Transition. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:1191-1202. [PMID: 32256050 PMCID: PMC7090222 DOI: 10.2147/dddt.s235207] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 02/25/2020] [Indexed: 12/12/2022]
Abstract
Background Endothelial cells dysfunction is one of the hallmark pathogenic features of pulmonary arterial hypertension (PAH). Paeoniflorin (PF) is a monoterpene glycoside with endothelial protection, vasodilation, antifibrotic, anti–inflammatory and antioxidative properties. However, the effects of PF on PAH remain unknown. Methods Here, we investigated the efficacy of PF in the SU5416/hypoxia (SuHx) rat model of PAH. Human pulmonary arterial endothelial cells (HPAECs) were exposed to 1% O2 with or without PF treatment. Results Hemodynamics analysis showed that prophylactic treatment with PF (300 mg/kg i.g. daily for 21 days) significantly inhibited chronic hypoxia/SU5416-induced elevations of right ventricular systolic pressure (RVSP) and right ventricular hypertrophy index in rats. Meanwhile, PF significantly reduced pulmonary vascular remodeling, as well as alleviated collagen deposition in lungs and right ventricles in SuHx rats. Additionally, PF inhibited SuHx–induced down-regulation of endothelial marker (vascular endothelial cadherin) and up-regulation of mesenchymal markers (fibronectin and vimentin) in lung, suggesting that PF could inhibit SuHx–induced endothelial-to-mesenchymal transition (EndMT) in lung. Further in vitro studies confirmed that PF treatment suppressed hypoxia-induced EndMT in HPAECs, which was abolished by the knockdown of bone morphogenetic protein receptor type 2 (BMPR2) in HPAECs. Conclusion Taken together, our findings suggest that PF ameliorates BMPR2 down-regulation-mediated EndMT and thereafter alleviates SuHx–induced PAH in rats.
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Affiliation(s)
- Min Yu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Liyao Peng
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Ping Liu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Mingxia Yang
- Department of Respiratory and Critical Care Medicine, The Affiliated Changzhou No.2 People's Hospital of Nanjing Medical University, Changzhou 213003, People's Republic of China
| | - Hong Zhou
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Yirui Ding
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Jingjing Wang
- Department of Respiratory Medicine, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, People's Republic of China
| | - Wen Huang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Qi Tan
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Yanli Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Weiping Xie
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Hui Kong
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
| | - Hong Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, People's Republic of China
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Froogh G, Kandhi S, Duvvi R, Le Y, Weng Z, Alruwaili N, Ashe JO, Sun D, Huang A. The contribution of chymase-dependent formation of ANG II to cardiac dysfunction in metabolic syndrome of young rats: roles of fructose and EETs. Am J Physiol Heart Circ Physiol 2020; 318:H985-H993. [PMID: 32167781 DOI: 10.1152/ajpheart.00633.2019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The roles of ACE-independent ANG II production via chymase and therapeutic potential of epoxyeicosatrienoic acids (EETs) in fructose-induced metabolic syndrome (MetS) in the adolescent population remain elusive. Thus we tested the hypothesis that a high-fructose diet (HFD) in young rats elicits chymase-dependent increases in ANG II production and oxidative stress, responses that are reversible by 1-trifluoromethoxyphenyl-3-(1-propionylpiperidin-4-yl) urea (TPPU), an inhibitor of soluble epoxide hydrolase (sEH) that metabolizes EETs. Three groups of weanling rats (21-day-old) were fed a normal diet, 60% HFD, and HFD with TPPU, respectively, for 30 days. HFD rats developed MetS, characterized by hyperglycemia, hyperinsulinemia, and hypertension and associated with decreases in cardiac output and stroke volume and loss of nitric oxide (NO) modulation of myocardial oxygen consumption; all impairments were normalized by TPPU that significantly elevated circulating 11,12-EET, a major cardiac EET isoform. In the presence of comparable cardiac angiotensin-converting enzyme (ACE) expression/activity among the three groups, HFD rats exhibited significantly greater chymase-dependent ANG II formation in hearts, as indicated by an augmented cardiac chymase content as a function of enhanced mast cell degranulation. The enhanced chymase-dependent ANG II production was paralleled with increases in ANG II type 1 receptor (AT1R) expression and NADPH oxidase (Nox)-induced superoxide, alterations that were significantly reversed by TPPU. Conversely, HFD-induced downregulation of cardiac ACE2, followed by a lower Ang-(1-7) level displayed in an TPPU-irreversible manner. In conclusion, HFD-driven adverse chymase/ANG II/Nox/superoxide signaling in young rats was prevented by inhibition of sEH via, at least in part, an EET-mediated stabilization of mast cells, highlighting chymase and sEH as therapeutic targets during treatment of MetS.NEW & NOTEWORTHY As the highest fructose consumers, the adolescent population is highly susceptible to the metabolic syndrome, where increases in mast cell chymase-dependent formation of ANG II, ensued by cardiometabolic dysfunction, are reversible in response to inhibition of soluble epoxide hydrolase (sEH). This study highlights chymase and sEH as therapeutic targets and unravels novel avenues for the development of optimal strategies for young patients with fructose-induced metabolic syndrome.
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Affiliation(s)
- Ghezal Froogh
- Departments of Physiology, New York Medical College, Valhalla, New York
| | - Sharath Kandhi
- Departments of Physiology, New York Medical College, Valhalla, New York
| | - Roopa Duvvi
- Departments of Physiology, New York Medical College, Valhalla, New York
| | - Yicong Le
- Departments of Physiology, New York Medical College, Valhalla, New York
| | - Zan Weng
- Departments of Physiology, New York Medical College, Valhalla, New York
| | - Norah Alruwaili
- Departments of Physiology, New York Medical College, Valhalla, New York
| | - Jonathan O Ashe
- Departments of Physiology, New York Medical College, Valhalla, New York
| | - Dong Sun
- Departments of Physiology, New York Medical College, Valhalla, New York
| | - An Huang
- Departments of Physiology, New York Medical College, Valhalla, New York
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