101
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Li J, Liang X, Wang Y, Xu Z, Li G. Investigation of highly expressed PCSK9 in atherosclerotic plaques and ox-LDL-induced endothelial cell apoptosis. Mol Med Rep 2017; 16:1817-1825. [PMID: 28656218 PMCID: PMC5561783 DOI: 10.3892/mmr.2017.6803] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Accepted: 02/02/2017] [Indexed: 11/13/2022] Open
Abstract
The present study aimed to explore the direct toxicity of proprotein convertase subtilisin/kexin type 9 (PCSK9) to atherosclerosis (AS) and its association with apoptotic endothelial cells. Apolipoprotein E−/− mice were randomly divided into two groups, control and experimental. The control group was administered a normal diet and the experimental group was administered a high-fat diet. After 20 weeks, the aorta was isolated and dissected. Hematoxylin and eosin staining, and immunohistochemical analysis were performed. Human umbilical vein endothelial cells were incubated with varied concentrations of oxidized low-density lipoprotein (ox-LDL) for different times. The apoptotic rate was detected by flow cytometry. Western blotting and reverse transcription-quantitative polymerase chain reaction analysis were conducted to detect the expression of PCSK9, B-cell lymphoma 2 (Bcl-2), bcl-2-like protein 4 (Bax) and caspase-3. Short hairpin (sh) RNA-PCSK9 was transfected into endothelial cells using lentiviral transfection. The expression levels of PCSK9, Bax, Bcl-2, caspase-3 and the mitogen-activated protein kinase (MAPK) pathway proteins were detected. The high-fat group was successfully established as an AS model and PCSK9 was highly expressed in the AS plaque. Treatment with ox-LDL induced apoptosis and increased mRNA and protein levels of PCSK9. PCSK9 mRNA and proteins levels were downregulated by shRNA-PCSK9. The deficiency of PCSK9 markedly inhibited the expression of pro-apoptotic proteins and promoted anti-apoptotic proteins. In addition, phosphorylation of p38 and c-Jun N-terminal kinases was altered by shRNA-PCSK9. Targeting of PCSK9 by shRNA-PCSK9 may repress endothelial cell apoptosis through MAPK signaling in AS, providing a novel direction for understanding the mechanism and treatment of AS.
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Affiliation(s)
- Jiao Li
- Tianjin Key Laboratory of Ionic‑Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Xue Liang
- Tianjin Key Laboratory of Ionic‑Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Yuanyuan Wang
- Tianjin Key Laboratory of Ionic‑Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Zhao Xu
- Tianjin Key Laboratory of Ionic‑Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Guangping Li
- Tianjin Key Laboratory of Ionic‑Molecular Function of Cardiovascular Disease, Department of Cardiology, Tianjin Institute of Cardiology, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
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102
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Jakic B, Buszko M, Cappellano G, Wick G. Elevated sodium leads to the increased expression of HSP60 and induces apoptosis in HUVECs. PLoS One 2017; 12:e0179383. [PMID: 28604836 PMCID: PMC5467851 DOI: 10.1371/journal.pone.0179383] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 05/28/2017] [Indexed: 11/19/2022] Open
Abstract
Atherosclerosis is the leading cause of death in the world. We have previously shown that expression of heat shock protein 60 (HSP60) on the surface of endothelial cells is the main cause of initiating the disease as it acts as a T cell auto-antigen and can be triggered by classical atherosclerosis risk factors, such as infection (e.g. Chlamydia pneumoniae), chemical stress (smoking, oxygen radicals, drugs), physical insult (heat, shear blood flow) and inflammation (inflammatory cytokines, lipopolysaccharide, oxidized low density lipoprotein, advanced glycation end products). In the present study, we show that increasing levels of sodium chloride can also induce an increase in intracellular and surface expression of HSP60 protein in human umbilical vein endothelial cells. In addition, we found that elevated sodium induces apoptosis.
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Affiliation(s)
- Bojana Jakic
- Laboratory of Autoimmunity, Division of Experimental Pathophysiology and Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
- * E-mail:
| | - Maja Buszko
- Laboratory of Autoimmunity, Division of Experimental Pathophysiology and Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Giuseppe Cappellano
- Laboratory of Autoimmunity, Division of Experimental Pathophysiology and Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Georg Wick
- Laboratory of Autoimmunity, Division of Experimental Pathophysiology and Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
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103
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GFAT1 phosphorylation by AMPK promotes VEGF-induced angiogenesis. Biochem J 2017; 474:983-1001. [PMID: 28008135 DOI: 10.1042/bcj20160980] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 12/20/2016] [Accepted: 12/22/2016] [Indexed: 02/07/2023]
Abstract
Activation of AMP-activated protein kinase (AMPK) in endothelial cells regulates energy homeostasis, stress protection and angiogenesis, but the underlying mechanisms are incompletely understood. Using a label-free phosphoproteomic analysis, we identified glutamine:fructose-6-phosphate amidotransferase 1 (GFAT1) as an AMPK substrate. GFAT1 is the rate-limiting enzyme in the hexosamine biosynthesis pathway (HBP) and as such controls the modification of proteins by O-linked β-N-acetylglucosamine (O-GlcNAc). In the present study, we tested the hypothesis that AMPK controls O-GlcNAc levels and function of endothelial cells via GFAT1 phosphorylation using biochemical, pharmacological, genetic and in vitro angiogenesis approaches. Activation of AMPK in primary human endothelial cells by 5-aminoimidazole-4-carboxamide riboside (AICAR) or by vascular endothelial growth factor (VEGF) led to GFAT1 phosphorylation at serine 243. This effect was not seen when AMPK was down-regulated by siRNA. Upon AMPK activation, diminished GFAT activity and reduced O-GlcNAc levels were observed in endothelial cells containing wild-type (WT)-GFAT1 but not in cells expressing non-phosphorylatable S243A-GFAT1. Pharmacological inhibition or siRNA-mediated down-regulation of GFAT1 potentiated VEGF-induced sprouting, indicating that GFAT1 acts as a negative regulator of angiogenesis. In cells expressing S243A-GFAT1, VEGF-induced sprouting was reduced, suggesting that VEGF relieves the inhibitory action of GFAT1/HBP on angiogenesis via AMPK-mediated GFAT1 phosphorylation. Activation of GFAT1/HBP by high glucose led to impairment of vascular sprouting, whereas GFAT1 inhibition improved sprouting even if glucose level was high. Our findings provide novel mechanistic insights into the role of HBP in angiogenesis. They suggest that targeting AMPK in endothelium might help to ameliorate hyperglycaemia-induced vascular dysfunction associated with metabolic disorders.
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104
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Zakharova IS, Zhiven' MK, Saaya SB, Shevchenko AI, Smirnova AM, Strunov A, Karpenko AA, Pokushalov EA, Ivanova LN, Makarevich PI, Parfyonova YV, Aboian E, Zakian SM. Endothelial and smooth muscle cells derived from human cardiac explants demonstrate angiogenic potential and suitable for design of cell-containing vascular grafts. J Transl Med 2017; 15:54. [PMID: 28257636 PMCID: PMC5336693 DOI: 10.1186/s12967-017-1156-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 02/22/2017] [Indexed: 01/25/2023] Open
Abstract
Background Endothelial and smooth muscle cells are considered promising resources for regenerative medicine and cell replacement therapy. It has been shown that both types of cells are heterogeneous depending on the type of vessels and organs in which they are located. Therefore, isolation of endothelial and smooth muscle cells from tissues relevant to the area of research is necessary for the adequate study of specific pathologies. However, sources of specialized human endothelial and smooth muscle cells are limited, and the search for new sources is still relevant. The main goal of our study is to demonstrate that functional endothelial and smooth muscle cells can be obtained from an available source—post-surgically discarded cardiac tissue from the right atrial appendage and right ventricular myocardium. Methods Heterogeneous primary cell cultures were enzymatically isolated from cardiac explants and then grown in specific endothelial and smooth muscle growth media on collagen IV-coated surfaces. The population of endothelial cells was further enriched by immunomagnetic sorting for CD31, and the culture thus obtained was characterized by immunocytochemistry, ultrastructural analysis and in vitro functional tests. The angiogenic potency of the cells was examined by injecting them, along with Matrigel, into immunodeficient mice. Cells were also seeded on characterized polycaprolactone/chitosan membranes with subsequent analysis of cell proliferation and function. Results Endothelial cells isolated from cardiac explants expressed CD31, VE-cadherin and VEGFR2 and showed typical properties, namely, cytoplasmic Weibel-Palade bodies, metabolism of acetylated low-density lipoproteins, formation of capillary-like structures in Matrigel, and production of extracellular matrix and angiogenic cytokines. Isolated smooth muscle cells expressed extracellular matrix components as well as α-actin and myosin heavy chain. Vascular cells derived from cardiac explants demonstrated the ability to stimulate angiogenesis in vivo. Endothelial cells proliferated most effectively on membranes made of polycaprolactone and chitosan blended in a 25:75 ratio, neutralized by a mixture of alkaline and ethanol. Endothelial and smooth muscle cells retained their functional properties when seeded on the blended membranes. Conclusions We established endothelial and smooth muscle cell cultures from human right atrial appendage and right ventricle post-operative explants. The isolated cells revealed angiogenic potential and may be a promising source of patient-specific cells for regenerative medicine. Electronic supplementary material The online version of this article (doi:10.1186/s12967-017-1156-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- I S Zakharova
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation. .,Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation. .,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation.
| | - M K Zhiven'
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation
| | - Sh B Saaya
- Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation
| | - A I Shevchenko
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation.,Novosibirsk State University, Novosibirsk, Russian Federation
| | - A M Smirnova
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation.,Novosibirsk State University, Novosibirsk, Russian Federation
| | - A Strunov
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation
| | - A A Karpenko
- Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation
| | - E A Pokushalov
- Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation
| | - L N Ivanova
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Novosibirsk State University, Novosibirsk, Russian Federation
| | - P I Makarevich
- Laboratory of Angiogenesis, Russian Cardiology Research and Production Complex, Moscow, Russian Federation.,Laboratory of gene and cell therapy, Institute of regenerative medicine, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Y V Parfyonova
- Laboratory of Angiogenesis, Russian Cardiology Research and Production Complex, Moscow, Russian Federation.,Faculty of Medicine, Lomonosov Moscow State University, Moscow, Russian Federation
| | - E Aboian
- Division of Vascular Surgery, Palo Alto Medical Foundation, Burlingame, USA
| | - S M Zakian
- The Federal Research Center Institute of Cytology And Genetics, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Institute of Chemical Biology and Fundamental Medicine, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation.,Siberian Federal Biomedical Research Center, Ministry of Health Care of Russian Federation, Novosibirsk, Russian Federation.,Novosibirsk State University, Novosibirsk, Russian Federation
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105
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Moderate hyperoxia induces inflammation, apoptosis and necrosis in human umbilical vein endothelial cells. Eur J Anaesthesiol 2017; 34:141-149. [DOI: 10.1097/eja.0000000000000593] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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106
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Chantarasrivong C, Ueki A, Ohyama R, Unga J, Nakamura S, Nakanishi I, Higuchi Y, Kawakami S, Ando H, Imamura A, Ishida H, Yamashita F, Kiso M, Hashida M. Synthesis and Functional Characterization of Novel Sialyl LewisX Mimic-Decorated Liposomes for E-selectin-Mediated Targeting to Inflamed Endothelial Cells. Mol Pharm 2017; 14:1528-1537. [DOI: 10.1021/acs.molpharmaceut.6b00982] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Chanikarn Chantarasrivong
- Department of Drug Delivery Research, Graduate School of Pharmaceutical
Sciences, Kyoto University, 46-29 Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8302, Japan
| | - Akiharu Ueki
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshidaushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Ryutaro Ohyama
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
| | - Johan Unga
- Department of Drug Delivery Research, Graduate School of Pharmaceutical
Sciences, Kyoto University, 46-29 Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8302, Japan
| | - Shinya Nakamura
- Department of Pharmaceutical Sciences,
Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae,
Higashi-Osaka, Osaka 577-8502, Japan
| | - Isao Nakanishi
- Department of Pharmaceutical Sciences,
Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae,
Higashi-Osaka, Osaka 577-8502, Japan
| | - Yuriko Higuchi
- Department of Drug Delivery Research, Graduate School of Pharmaceutical
Sciences, Kyoto University, 46-29 Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8302, Japan
| | - Shigeru Kawakami
- Department of Drug Delivery Research, Graduate School of Pharmaceutical
Sciences, Kyoto University, 46-29 Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8302, Japan
| | - Hiromune Ando
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshidaushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan
- Gifu Center for Highly Advanced Integration
of Nano and Life Sciences (G-CHAIN), Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
| | - Akihiro Imamura
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
| | - Hideharu Ishida
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
- Gifu Center for Highly Advanced Integration
of Nano and Life Sciences (G-CHAIN), Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
| | - Fumiyoshi Yamashita
- Department of Drug Delivery Research, Graduate School of Pharmaceutical
Sciences, Kyoto University, 46-29 Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8302, Japan
| | - Makoto Kiso
- Department of Applied Bioorganic Chemistry, Gifu University, 1-1 Yanagido, Gifu-shi, Gifu 501-1193, Japan
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshidaushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Mitsuru Hashida
- Department of Drug Delivery Research, Graduate School of Pharmaceutical
Sciences, Kyoto University, 46-29 Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8302, Japan
- Institute for Integrated
Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshidaushinomiya-cho, Sakyo-ku, Kyoto 606-8501, Japan
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107
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Gong H, Liu M, Klomp J, Merrill BJ, Rehman J, Malik AB. Method for Dual Viral Vector Mediated CRISPR-Cas9 Gene Disruption in Primary Human Endothelial Cells. Sci Rep 2017; 7:42127. [PMID: 28198371 PMCID: PMC5309830 DOI: 10.1038/srep42127] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 01/03/2017] [Indexed: 01/13/2023] Open
Abstract
Human endothelial cells (ECs) are widely used to study mechanisms of angiogenesis, inflammation, and endothelial permeability. Targeted gene disruption induced by Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-CRISPR-Associated Protein 9 (Cas9) nuclease gene editing is potentially an important tool for definitively establishing the functional roles of individual genes in ECs. We showed that co-delivery of adenovirus encoding EGFP-tagged Cas9 and lentivirus encoding a single guide RNA (sgRNA) in primary human lung microvascular ECs (HLMVECs) disrupted the expression of the Tie2 gene and protein. Tie2 disruption increased basal endothelial permeability and prevented permeability recovery following injury induced by the inflammatory stimulus thrombin. Thus, gene deletion via viral co-delivery of CRISPR-Cas9 in primary human ECs provides a novel platform to investigate signaling mechanisms of normal and perturbed EC function without the need for clonal expansion.
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Affiliation(s)
- Haixia Gong
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Menglin Liu
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Jeff Klomp
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Bradley J. Merrill
- Department of Biochemistry and Molecular Genetics, University of Illinois College of Medicine, Chicago, IL 60612, USA
- Genome Editing Core, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Jalees Rehman
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- Division of Cardiology, Department of Medicine, University of Illinois College of Medicine, Chicago, IL 60612, USA
| | - Asrar B. Malik
- Department of Pharmacology, University of Illinois College of Medicine, Chicago, IL 60612, USA
- The Center for Lung and Vascular Biology, University of Illinois College of Medicine, Chicago, IL 60612, USA
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108
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Sakai O, Yasuzawa T, Sumikawa Y, Ueta T, Imai H, Sawabe A, Ueshima S. Role of GPx4 in human vascular endothelial cells, and the compensatory activity of brown rice on GPx4 ablation condition. ACTA ACUST UNITED AC 2016; 24:9-15. [PMID: 27964880 DOI: 10.1016/j.pathophys.2016.11.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/13/2016] [Accepted: 11/18/2016] [Indexed: 01/19/2023]
Abstract
Oxidative stress is implicated in the pathologies of vascular endothelial cells. However, the importance of specific antioxidant enzymes in vascular endothelial cells is not fully understood. The purpose of this study was to elucidate the importance of Glutathione peroxidase 4 (GPx4), and the involvement of ferroptosis on cell death induced by GPx4 loss in human vascular endothelial cells. In addition, we examined the compensatory activity of brown rice on GPx4 ablation condition. Human umbilical vein endothelial cells were transfected with GPx4 or scramble control siRNA. GPx4 knockdown caused the increase in the levels of lipid oxidation, and induced cytotoxicity. On the other hand, α-tocopherol (vitamin E) and extract of brown rice, ameliorated lipid peroxidation, cytotoxicity, and delay of proliferation induced by GPx4 knockdown. Furthermore, ferrostatin-1, inhibitor of ferroptosis, also prevented cytotoxicity and delay of proliferation. In conclusion, our data demonstrated that GPx4 is an essential antioxidant enzyme for protecting lipid peroxidation, and is a regulator of ferroptosis in vascular endothelial cells. Furthermore, vitamin E rich food, such as brown rice, can compensate for GPx4 loss by protecting cells against lipid peroxidation.
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Affiliation(s)
- Osamu Sakai
- Senju Laboratory, Senju Pharmaceutical Co., Ltd., Kobe, Japan
| | - Toshinori Yasuzawa
- Department of Food Science and Nutrition, Faculty of Agriculture, Kindai University, Nara, Japan
| | - Yoshie Sumikawa
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University, Nara, Japan
| | - Takashi Ueta
- Department of Ophthalmology, Graduate School of Medicine and Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Hirotaka Imai
- School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan
| | - Akiyoshi Sawabe
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University, Nara, Japan
| | - Shigeru Ueshima
- Department of Food Science and Nutrition, Faculty of Agriculture, Kindai University, Nara, Japan; Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University, Nara, Japan; Antiaging Centre, Kindai University, Higashi-osaka, Japan.
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109
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Xu Y, Zhu J, Hu X, Wang C, Lu D, Gong C, Yang J, Zong L. CLIC1 Inhibition Attenuates Vascular Inflammation, Oxidative Stress, and Endothelial Injury. PLoS One 2016; 11:e0166790. [PMID: 27861612 PMCID: PMC5115793 DOI: 10.1371/journal.pone.0166790] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2016] [Accepted: 11/03/2016] [Indexed: 01/26/2023] Open
Abstract
Endothelial dysfunction, which includes endothelial oxidative damage and vascular inflammation, is a key initiating step in the pathogenesis of atherosclerosis (AS) and an independent risk factor for this disorder. Intracellular chloride channel 1 (CLIC1), a novel metamorphic protein, acts as a sensor of cell oxidation and is involved in inflammation. In this study, we hypothesize that CLIC1 plays an important role in AS. Apolipoprotein E-deficient mice were supplied with a normal diet or a high-fat and high-cholesterol diet for 8 weeks. Overexpressed CLIC1 was associated with the accelerated atherosclerotic plaque development, amplified oxidative stress, and in vivo release of inflammatory cytokines. We subsequently examined the underlying molecular mechanisms through in vitro experiments. Treatment of cultured human umbilical vein endothelial cells (HUVECs) with H2O2 induced endothelial oxidative damage and enhanced CLIC1 expression. Suppressing CLIC1 expression through gene knocked-out (CLIC1-/-) or using the specific inhibitor indanyloxyacetic acid-94 (IAA94) reduced ROS production, increased SOD enzyme activity, and significantly decreased MDA level. CLIC1-/- HUVECs exhibited significantly reduced expression of TNF-α and IL-1β as well as ICAM-1 and VCAM-1 at the protein levels. In addition, H2O2 promoted CLIC1 translocation to the cell membrane and insertion into lipid membranes, whereas IAA94 inhibited CLIC1 membrane translocation induced by H2O2. By contrast, the majority of CLIC1 did not aggregate on the cell membrane in normal HUVECs, and this finding is consistent with the changes in cytoplasmic chloride ion concentration. This study demonstrates for the first time that CLIC1 is overexpressed during AS development both in vitro and in vivo and can regulate the accumulation of inflammatory cytokines and production of oxidative stress. Our results also highlight that deregulation of endothelial functions may be associated with the membrane translocation of CLIC1 and active chloride-selective ion channels in endothelial cells.
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Affiliation(s)
- Yingling Xu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ji Zhu
- Clinical Laboratory, The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiao Hu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Cui Wang
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Dezhao Lu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
- * E-mail:
| | - Chenxue Gong
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jinhuan Yang
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
| | - Lei Zong
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou, China
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110
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Sivasinprasasn S, Pantan R, Thummayot S, Tocharus J, Suksamrarn A, Tocharus C. Cyanidin-3-glucoside attenuates angiotensin II-induced oxidative stress and inflammation in vascular endothelial cells. Chem Biol Interact 2016; 260:S0009-2797(16)30510-5. [PMID: 27983965 DOI: 10.1016/j.cbi.2016.10.022] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 10/06/2016] [Accepted: 10/27/2016] [Indexed: 10/20/2022]
Abstract
Angiotensin II (Ang II) causes oxidative stress and vascular inflammation, leading to vascular endothelial cell dysfunction, and is associated with the development of inflammatory cardiovascular diseases such as atherosclerosis. Therefore, interventions of oxidative stress and inflammation may contribute to the reduction of cardiovascular diseases. Cyanidin-3-glucoside (C3G) plays a role in the prevention of oxidative damage in several diseases. Here, we investigated the effect of C3G on Ang II-induced oxidative stress and vascular inflammation in human endothelial cells (EA.hy926). C3G dose-dependently suppressed the free radicals and inhibited the nuclear factor-kappa B (NF-κB) signaling pathway by protecting the degradation of inhibitor of kappa B-alpha (IκB-α), inhibiting the expression and translocation of NF-κB into the nucleus through the down-regulation of NF-κB p65 and reducing the expression of inducible nitric oxide synthase (iNOS). Pretreatment with C3G not only prohibited the NF-κB signaling pathway but also promoted the activity of the nuclear erythroid-related factor 2 (Nrf2) signaling pathway through the upregulation of endogenous antioxidant enzymes. Particularly, we observed that C3G significantly enhanced the production of superoxide dismutase (SOD) and induced the expression of heme oxygenase (HO-1). Our findings confirm that C3G can protect against vascular endothelial cell inflammation induced by AngII. C3G may represent a promising dietary supplement for the prevention of inflammation, thereby decreasing the risk for the development of atherosclerosis.
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Affiliation(s)
- Sivanan Sivasinprasasn
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Suthep Road, Chiang Mai 50200, Thailand
| | - Rungusa Pantan
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Suthep Road, Chiang Mai 50200, Thailand
| | - Sarinthorn Thummayot
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Suthep Road, Chiang Mai 50200, Thailand
| | - Jiraporn Tocharus
- Department of Physiology, Faculty of Medicine, Chiang Mai University, Suthep Road, Chiang Mai 50200, Thailand
| | - Apichart Suksamrarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand
| | - Chainarong Tocharus
- Department of Anatomy, Faculty of Medicine, Chiang Mai University, Suthep Road, Chiang Mai 50200, Thailand.
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Babaee F, Safaeian L, Zolfaghari B, Haghjoo Javanmard S. Cytoprotective Effect of Hydroalcoholic Extract of Pinus eldarica Bark against H2O2-Induced Oxidative Stress in Human Endothelial Cells. IRANIAN BIOMEDICAL JOURNAL 2016; 20:161-7. [PMID: 26931383 PMCID: PMC4949980 DOI: 10.7508/ibj.2016.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 07/14/2015] [Accepted: 07/26/2015] [Indexed: 01/10/2023]
Abstract
BACKGROUND Pinus eldarica is a widely growing pine in Iran consisting of biologically active constituents with antioxidant properties. This study investigates the effect of hydroalcoholic extract of P. eldarica bark against oxidative damage induced by hydrogen peroxide (H2O2) in human umbilical vein endothelial cells (HUVECs). METHODS The total phenolic content of P. eldarica extract was determined using Folin-Ciocalteu method. The cytotoxicity of P. eldarica extract (25-1000 µg/ml) on HUVECs was assessed using 3-(4,5- Dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) method. Cytoprotective effect of P. eldarica extract (25-500 µg/ml) on H2O2-induced oxidative stress was also evaluated by MTT assay. The intra- and extra-cellular hydroperoxides concentration and ferric reducing antioxidant power (FRAP) were measured in pretreated cells. RESULTS The total phenolic content of P. eldarica extract was estimated as 37.04±1.8% gallic acid equivalent. P. eldarica extract (25-1000 µg/ml) had no cytotoxic effect on HUVECs viability. The pretreatment of HUVECs with P. eldarica extract at the concentrations of 50-500 µg/ml significantly reduced the cytotoxicity of H2O2. P. eldarica extract decreased hydroperoxides concentration and increased FRAP value in intra-cellular fluid at the concentration range of 100-500 µg/ml and in extra-cellular fluid at the concentration range of 25-500 µg/ml. CONCLUSIONS This study revealed the antioxidant and cytoprotective effects of P. eldarica extract against H2O2-induced oxidative stress in HUVECs. Concerning the high content of phenolic compounds in P. eldarica, more research is needed to evaluate its clinical value in endothelial dysfunction and in other oxidative conditions.
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Affiliation(s)
- Fatemeh Babaee
- Department of Pharmacology and Toxicology, Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Leila Safaeian
- Department of Pharmacology and Toxicology, Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Behzad Zolfaghari
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
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MicroRNAs in Hyperglycemia Induced Endothelial Cell Dysfunction. Int J Mol Sci 2016; 17:518. [PMID: 27070575 PMCID: PMC4848974 DOI: 10.3390/ijms17040518] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 03/17/2016] [Accepted: 03/22/2016] [Indexed: 01/15/2023] Open
Abstract
Hyperglycemia is closely associated with prediabetes and Type 2 Diabetes Mellitus. Hyperglycemia increases the risk of vascular complications such as diabetic retinopathy, diabetic nephropathy, peripheral vascular disease and cerebro/cardiovascular diseases. Under hyperglycemic conditions, the endothelial cells become dysfunctional. In this study, we investigated the miRNA expression changes in human umbilical vein endothelial cells exposed to different glucose concentrations (5, 10, 25 and 40 mM glucose) and at various time intervals (6, 12, 24 and 48 h). miRNA microarray analyses showed that there is a correlation between hyperglycemia induced endothelial dysfunction and miRNA expression. In silico pathways analyses on the altered miRNA expression showed that the majority of the affected biological pathways appeared to be associated to endothelial cell dysfunction and apoptosis. We found the expression of ten miRNAs (miR-26a-5p, -26b-5p, 29b-3p, -29c-3p, -125b-1-3p, -130b-3p, -140-5p, -192-5p, -221-3p and -320a) to increase gradually with increasing concentration of glucose. These miRNAs were also found to be involved in endothelial dysfunction. At least seven of them, miR-29b-3p, -29c-3p, -125b-1-3p, -130b-3p, -221-3p, -320a and -192-5p, can be correlated to endothelial cell apoptosis.
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Jung CH, Lee MJ, Kang YM, Lee YL, Seol SM, Yoon HK, Kang SW, Lee WJ, Park JY. C1q/TNF-related protein-9 inhibits cytokine-induced vascular inflammation and leukocyte adhesiveness via AMP-activated protein kinase activation in endothelial cells. Mol Cell Endocrinol 2016; 419:235-43. [PMID: 26523509 DOI: 10.1016/j.mce.2015.10.023] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 10/02/2015] [Accepted: 10/25/2015] [Indexed: 12/25/2022]
Abstract
Although recent studies have reported cardioprotective effects of C1q/TNF-related protein 9 (CTRP9), the closet adiponectin paralog, its role on cytokine-induced endothelial inflammation is unknown. We investigated whether CTRP9 prevented inflammatory cytokine-induced nuclear factor-kappa B (NF-κB) activation and inhibited the expression of adhesion molecules and a chemokine in the vascular endothelial cell. We used human aortic endothelial cells (HAECs) to examine the effects of CTRP9 on NF-κB activation and the expression of NF-κB-mediated genes, including intercellular adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 (VCAM-1), and monocyte chemoattractant protein-1 (MCP-1). Tumor necrosis factor alpha (TNFα) was used as a representative proinflammatory cytokine. In an adhesion assay using THP-1 cells, CTRP9 reduced TNFα-induced adhesion of monocytes to HAECs. Treatment with CTRP9 significantly decreased TNFα-induced activation of NF-κB, as well as the expression of ICAM-1, VCAM-1, and MCP-1. In addition, treatment with CTRP9 significantly increased the phosphorylation of AMP-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC), the downstream target of AMPK. The inhibitory effect of CTRP9 on the expression of ICAM-1, VCAM-1, and MCP-1 and monocyte adhesion to HAECs was abolished after transfection with an AMPKα1-specific siRNA. Our study is the first to demonstrate that CTRP9 attenuates cytokine-induced vascular inflammation in endothelial cells mediated by AMPK activation.
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Affiliation(s)
- Chang Hee Jung
- Department of Internal Medicine, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Min Jung Lee
- Department of Internal Medicine, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yu Mi Kang
- Department of Internal Medicine, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yoo La Lee
- Asan Institute of Life Sciences, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - So Mi Seol
- Asan Institute of Life Sciences, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hae Kyeong Yoon
- Asan Institute of Life Sciences, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sang-Wook Kang
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Woo Je Lee
- Department of Internal Medicine, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Joong-Yeol Park
- Department of Internal Medicine, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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114
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Jian L, Jian D, Chen Q, Zhang L. Long Noncoding RNAs in Atherosclerosis. J Atheroscler Thromb 2015; 23:376-84. [PMID: 26699715 DOI: 10.5551/jat.33167] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) were a group of non-protein-coding RNAs >200 nucleotides and participated in biological processes and pathophysiological conditions in vivo or in vitro. Recently, more and more lncRNAs interfering with the progress of atherosclerosis were identified and characterized in the atherogenic cells such as vascular smooth muscle cells (VSMCs), endothelial cells (ECs), and monocytes/macrophages showing that lncRNAs play an important role in the occurrence of atherosclerosis. In this review, we summarized and highlighted the lncRNAs that play a role in the process of atherosclerosis. This study may provide helpful insights regarding further study of lncRNAs associated with atherosclerosis.
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Affiliation(s)
- Liguo Jian
- Department of Cardiology, The Second Affiliated Hospital of Zhengzhou University
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115
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Wu J, Hafner C, Schramel JP, Kaun C, Krychtiuk KA, Wojta J, Boehme S, Ullrich R, Tretter EV, Markstaller K, Klein KU. Cyclic and constant hyperoxia cause inflammation, apoptosis and cell death in human umbilical vein endothelial cells. Acta Anaesthesiol Scand 2015; 60:492-501. [PMID: 26489399 DOI: 10.1111/aas.12646] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 09/02/2015] [Accepted: 09/09/2015] [Indexed: 12/14/2022]
Abstract
BACKGROUND Perioperative high-dose oxygen (O2 ) exposure can cause hyperoxia. While the effect of constant hyperoxia on the vascular endothelium has been investigated to some extent, the impact of cyclic hyperoxia largely remains unknown. We hypothesized that cyclic hyperoxia would induce more injury than constant hyperoxia to human umbilical vein endothelial cells (HUVECs). METHODS HUVECs were exposed to cyclic hyperoxia (5-95% O2 ) or constant hyperoxia (95% O2 ), normoxia (21% O2 ), and hypoxia (5% O2 ). Cell growth, viability (Annexin V/propidium iodide and 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyl tetrazolium bromide, MTT) lactate dehydrogenase (LDH), release, cytokine (interleukin, IL and macrophage migration inhibitory factor, MIF) release, total antioxidant capacity (TAC), and superoxide dismutase activity (SOD) of cell lysate were assessed at baseline and 8, 24, and 72 h. A signal transduction pathway finder array for gene expression analysis was performed after 8 h. RESULTS Constant and cyclic hyperoxia-induced gradually detrimental effects on HUVECs. After 72 h, constant or cyclic hyperoxia exposure induced change in cytotoxic (LDH +12%, P = 0.026; apoptosis +121/61%, P < 0.01; alive cells -15%, P < 0.01; MTT -16/15%, P < 0.01), inflammatory (IL-6 +142/190%, P < 0.01; IL-8 +72/43%, P < 0.01; MIF +147/93%, P < 0.01), or redox-sensitive (SOD +278%, TAC-25% P < 0.01) markers. Gene expression analysis revealed that constant and cyclic hyperoxia exposure differently activates oxidative stress, nuclear factor kappa B, Notch, and peroxisome proliferator-activated receptor pathways. CONCLUSIONS Extreme hyperoxia exposure induces inflammation, apoptosis and cell death in HUVECs. Although our findings cannot be transferred to clinical settings, results suggest that hyperoxia exposure may cause vascular injury that could play a role in determining perioperative outcome.
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Affiliation(s)
- J. Wu
- Department of Anaesthesia; General Intensive Care and Pain Management; Medical University of Vienna; Vienna Austria
- Department of Anesthesiology; Union Hospital; Tongji Medical College; Huazhong University of Science and Technology; Wuhan China
| | - C. Hafner
- Department of Anaesthesia; General Intensive Care and Pain Management; Medical University of Vienna; Vienna Austria
| | - J. P. Schramel
- Unit of Anaesthesiology and Perioperative Intensive Care; University of Veterinary Medicine; Vienna Austria
| | - C. Kaun
- Department of Internal Medicine II; Medical University Vienna; Vienna Austria
- Core Facilities; Medical University of Vienna; Vienna Austria
| | - K. A. Krychtiuk
- Department of Internal Medicine II; Medical University Vienna; Vienna Austria
- Ludwig Boltzmann Cluster for Cardiovascular Research; Vienna Austria
| | - J. Wojta
- Department of Internal Medicine II; Medical University Vienna; Vienna Austria
- Core Facilities; Medical University of Vienna; Vienna Austria
- Ludwig Boltzmann Cluster for Cardiovascular Research; Vienna Austria
| | - S. Boehme
- Department of Anaesthesia; General Intensive Care and Pain Management; Medical University of Vienna; Vienna Austria
| | - R. Ullrich
- Department of Anaesthesia; General Intensive Care and Pain Management; Medical University of Vienna; Vienna Austria
| | - E. V. Tretter
- Department of Anaesthesia; General Intensive Care and Pain Management; Medical University of Vienna; Vienna Austria
| | - K. Markstaller
- Department of Anaesthesia; General Intensive Care and Pain Management; Medical University of Vienna; Vienna Austria
| | - K. U. Klein
- Department of Anaesthesia; General Intensive Care and Pain Management; Medical University of Vienna; Vienna Austria
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116
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Circulating endothelial cells in coronary artery disease and acute coronary syndrome. Trends Cardiovasc Med 2015; 25:578-87. [DOI: 10.1016/j.tcm.2015.01.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 01/28/2015] [Accepted: 01/28/2015] [Indexed: 01/27/2023]
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117
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Purple sweet potato color inhibits endothelial premature senescence by blocking the NLRP3 inflammasome. J Nutr Biochem 2015; 26:1029-40. [DOI: 10.1016/j.jnutbio.2015.04.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 04/09/2015] [Accepted: 04/16/2015] [Indexed: 12/31/2022]
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Safaeian L, Javanmard SH, Mollanoori Y, Dana N. Cytoprotective and antioxidant effects of human lactoferrin against H2O2-induced oxidative stress in human umbilical vein endothelial cells. Adv Biomed Res 2015; 4:188. [PMID: 26605227 PMCID: PMC4617156 DOI: 10.4103/2277-9175.164010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 01/27/2015] [Indexed: 02/07/2023] Open
Abstract
Background: Lactoferrin (LF) is an iron-binding glycoprotein with antioxidant, anti-inflammatory and nitric oxide-dependent vasodilatory properties. In the present study, we investigated the protective and antioxidant effects of LF on H2O2-induced oxidative stress in human umbilical vein endothelial cells (HUVECs). Materials and Methods: HUVECs were pretreated by (6.25–100 μg/ml) LF for 24 h and then exposed to 0.5 mM H2O2 for 2 h. Cell viability was assessed by 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The intra- and extra-cellular hydroperoxides concentration and ferric reducing antioxidant power (FRAP) were determined in pretreated cells. Results: Pretreatment of HUVECs with LF at the concentrations of 25–100 μg/ml significantly reduced the cytotoxicity of H2O2 in a concentration-dependent manner using MTT assay. LF pretreatment at different concentration ranges also decreased the hydroperoxides level and augmented the FRAP value in both intra-and extra-cellular assay. Conclusion: These findings revealed antioxidant and cytoprotective effects of LF against H2O2-induced oxidative stress in HUVECs. With regard to the beneficial vascular activity of LF, further investigations are suggested for understanding its clinical value in human endothelial dysfunction and prevention and/or treatment of CVDs.
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Affiliation(s)
- Leila Safaeian
- Department of Pharmacology and Toxicology, Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shaghayegh Haghjoo Javanmard
- Department of Physiology, Applied Physiology Research Center, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Yaser Mollanoori
- Department of Pharmacology and Toxicology, Isfahan Pharmaceutical Sciences Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nasim Dana
- Department of Physiology, Applied Physiology Research Center, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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119
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Lagi A, Cencetti S. Hypertensive emergencies: a new clinical approach. Clin Hypertens 2015; 21:20. [PMID: 26893930 PMCID: PMC4750795 DOI: 10.1186/s40885-015-0027-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 06/23/2015] [Indexed: 01/19/2023] Open
Abstract
The expression 'hypertensive urgencies' includes many diseases. The unifying features of these diseases are a high level of arterial pressure and acute distress of one or more organs. The aim of the review was to define the idea of the 'acute hypertension' as a new concept, different from 'chronic hypertension'. Acute hypertension might be related to 'organ damage' because it is the cause, the consequence or an effect of the acute stress. We compounded a narrative review which has included analyses of 373 articles. The structure of the search strategy included a literature search of PubMed, MEDLINE, Cochrane Library and Google Scholar databases. We applied the following inclusion criteria: prospective double-blind randomised controlled trials, experimental animal work studies, case-control studies and recruiting patients representative of the general sick population. In this review, the diseases included in the term 'hypertensive emergencies' share 'acute' hypertension. This is a new idea that emphasises the suddenly increased arterial pressure, irrespective of the initial arterial pressure and independent of the goals of hypertension control. The 'hypertensive emergencies' have been grouped together in three subsets: (1) diseases that result from acute hypertension that is caused by faulty regulation of the peripheral circulation (acute primary hypertension), (2) diseases that produce hypertension (acute secondary hypertension) and 3) diseases that have hypertension as an effect of the acute stress caused by the principle disease (acute associated hypertension). This review highlights a novel idea: acute hypertension is a common sign of different diseases characterised by the sudden surge of arterial pressure, so overwhelming the difference between hypertensive emergencies and urgencies. The judgment of acute hypertension is independent of the initial arterial pressure, normotension or hypertension and is linked with the transient failure of the baroreflex. Hypertensive emergencies are grouped together because all of these diseases require prompt therapy to prevent the negative outcomes of acute hypertension.
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Affiliation(s)
- Alfonso Lagi
- Emergency & Accident Unit, Ospedale Santa Maria Nuova, ASL 10, Florence, Italy
| | - Simone Cencetti
- Emergency & Accident Unit, Ospedale Santa Maria Nuova, ASL 10, Florence, Italy
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120
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Bhatt S, Gupta MK, Khamaisi M, Martinez R, Gritsenko MA, Wagner BK, Guye P, Busskamp V, Shirakawa J, Wu G, Liew CW, Clauss TR, Valdez I, El Ouaamari A, Dirice E, Takatani T, Keenan HA, Smith RD, Church G, Weiss R, Wagers AJ, Qian WJ, King GL, Kulkarni RN. Preserved DNA Damage Checkpoint Pathway Protects against Complications in Long-Standing Type 1 Diabetes. Cell Metab 2015; 22:239-52. [PMID: 26244933 PMCID: PMC4589213 DOI: 10.1016/j.cmet.2015.07.015] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 05/18/2015] [Accepted: 07/20/2015] [Indexed: 01/03/2023]
Abstract
The mechanisms underlying the development of complications in type 1 diabetes (T1D) are poorly understood. Disease modeling of induced pluripotent stem cells (iPSCs) from patients with longstanding T1D (disease duration ≥ 50 years) with severe (Medalist +C) or absent to mild complications (Medalist -C) revealed impaired growth, reprogramming, and differentiation in Medalist +C. Genomics and proteomics analyses suggested differential regulation of DNA damage checkpoint proteins favoring protection from cellular apoptosis in Medalist -C. In silico analyses showed altered expression patterns of DNA damage checkpoint factors among the Medalist groups to be targets of miR200, whose expression was significantly elevated in Medalist +C serum. Notably, neurons differentiated from Medalist +C iPSCs exhibited enhanced susceptibility to genotoxic stress that worsened upon miR200 overexpression. Furthermore, knockdown of miR200 in Medalist +C fibroblasts and iPSCs rescued checkpoint protein expression and reduced DNA damage. We propose miR200-regulated DNA damage checkpoint pathway as a potential therapeutic target for treating complications of diabetes.
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Affiliation(s)
- Shweta Bhatt
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Manoj K Gupta
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Mogher Khamaisi
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA; Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
| | - Rachael Martinez
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
| | - Marina A Gritsenko
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Bridget K Wagner
- Broad Institute of Harvard and Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Patrick Guye
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Volker Busskamp
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Jun Shirakawa
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Gongxiong Wu
- Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
| | - Chong Wee Liew
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Therese R Clauss
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Ivan Valdez
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Abdelfattah El Ouaamari
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Ercument Dirice
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Tomozumi Takatani
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA
| | - Hillary A Keenan
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA; Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
| | - Richard D Smith
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - George Church
- Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Ron Weiss
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Amy J Wagers
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Howard Hughes Medical Institute, Department of Stem Cell and Regenerative Biology, Harvard University, Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Wei-Jun Qian
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - George L King
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA; Section of Vascular Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA
| | - Rohit N Kulkarni
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, USA; Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02215, USA.
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Prasad LK, O’Mary H, Cui Z. Nanomedicine delivers promising treatments for rheumatoid arthritis. Nanomedicine (Lond) 2015; 10:2063-74. [PMID: 26084368 PMCID: PMC4552357 DOI: 10.2217/nnm.15.45] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
An increased understanding in the pathophysiology of chronic inflammatory diseases, such as rheumatoid arthritis, reveals that the diseased tissue and the increased presence of macrophages and other overexpressed molecules within the tissue can be exploited to enhance the delivery of nanomedicine. Nanomedicine can passively accumulate into chronic inflammatory tissues via the enhanced permeability and retention phenomenon, or be surface conjugated with a ligand to actively bind to receptors overexpressed by cells within chronic inflammatory tissues, leading to increased efficacy and reduced systemic side-effects. This review highlights the research conducted over the past decade on using nanomedicine for potential treatment of rheumatoid arthritis and summarizes some of the major findings and promising opportunities on using nanomedicine to treat this prevalent and chronic disease.
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Affiliation(s)
- Leena Kumari Prasad
- Pharmaceutics Division, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
| | - Hannah O’Mary
- Pharmaceutics Division, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
| | - Zhengrong Cui
- Pharmaceutics Division, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
- Inner Mongolia Key Laboratory of Molecular Biology, Inner Mongolia Medical University, Hohhot, Inner Mongolia, China
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Kim LA, Wong LL, Amarnani DS, Bigger-Allen AA, Hu Y, Marko CK, Eliott D, Shah VA, McGuone D, Stemmer-Rachamimov AO, Gai X, D’Amore PA, Arboleda-Velasquez JF. Characterization of cells from patient-derived fibrovascular membranes in proliferative diabetic retinopathy. Mol Vis 2015; 21:673-87. [PMID: 26120272 PMCID: PMC4462955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 06/10/2015] [Indexed: 11/02/2022] Open
Abstract
PURPOSE Epiretinal fibrovascular membranes (FVMs) are a hallmark of proliferative diabetic retinopathy (PDR). Surgical removal of FVMs is often indicated to treat tractional retinal detachment. This potentially informative pathological tissue is usually disposed of after surgery without further examination. We developed a method for isolating and characterizing cells derived from FVMs and correlated their expression of specific markers in culture with that in tissue. METHODS FVMs were obtained from 11 patients with PDR during diabetic vitrectomy surgery and were analyzed with electron microscopy (EM), comparative genomic hybridization (CGH), immunohistochemistry, and/or digested with collagenase II for cell isolation and culture. Antibody arrays and enzyme-linked immunosorbent assay (ELISA) were used to profile secreted angiogenesis-related proteins in cell culture supernatants. RESULTS EM analysis of the FVMs showed abnormal vessels composed of endothelial cells with large nuclei and plasma membrane infoldings, loosely attached perivascular cells, and stromal cells. The cellular constituents of the FVMs lacked major chromosomal aberrations as shown with CGH. Cells derived from FVMs (C-FVMs) could be isolated and maintained in culture. The C-FVMs retained the expression of markers of cell identity in primary culture, which define specific cell populations including CD31-positive, alpha-smooth muscle actin-positive (SMA), and glial fibrillary acidic protein-positive (GFAP) cells. In primary culture, secretion of angiopoietin-1 and thrombospondin-1 was significantly decreased in culture conditions that resemble a diabetic environment in SMA-positive C-FVMs compared to human retinal pericytes derived from a non-diabetic donor. CONCLUSIONS C-FVMs obtained from individuals with PDR can be isolated, cultured, and profiled in vitro and may constitute a unique resource for the discovery of cell signaling mechanisms underlying PDR that extends beyond current animal and cell culture models.
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Affiliation(s)
- Leo A. Kim
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA,Retina Service, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Lindsay L. Wong
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Dhanesh S. Amarnani
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Alexander A. Bigger-Allen
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Yang Hu
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Christina K. Marko
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Dean Eliott
- Retina Service, Massachusetts Eye and Ear Infirmary, Department of Ophthalmology, Harvard Medical School, Boston, MA
| | - Vinay A. Shah
- Dean McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK
| | - Declan McGuone
- C.S. Kubik Laboratory for Neuropathology, Massachusetts General Hospital, Boston, MA
| | | | - Xiaowu Gai
- Ocular Genomics Institute, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA
| | - Patricia A. D’Amore
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA,Department of Pathology, Harvard Medical School, Boston, MA
| | - Joseph F. Arboleda-Velasquez
- Schepens Eye Research Institute/Massachusetts Eye and Ear, Department of Ophthalmology, Harvard Medical School, Boston, MA
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Essential Oils from Fructus A. zerumbet Protect Human Aortic Endothelial Cells from Apoptosis Induced by Ox-LDL In Vitro. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:956824. [PMID: 25610487 PMCID: PMC4290151 DOI: 10.1155/2014/956824] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 12/02/2014] [Indexed: 11/28/2022]
Abstract
Alpinia zerumbet is a miao folk medicinal plant widely used in the Guizhou Province of southwest China that contains several bioactive constituents and possesses protective effects against cardiovascular diseases. In the present study, we evaluated the protective effect of essential oils derived from Fructus Alpiniae zerumbet (EOFAZ) on oxidized lowdensity-lipoprotein- (ox-LDL-) induced apoptosis in human aortic endothelial cells (HAECs). Following exposure to ox-LDL, HAECs presented with classical characteristics of apoptosis. However, EOFAZ ameliorated these morphological alterations and also inhibited the decrease in cell viability. In addition, EOFAZ abrogated the number of TUNEL or Hoechst 33258 stained positive cells observed after ox-LDL challenge. Investigation into the mechanisms of this inhibition revealed that EOFAZ treatment resulted in a downregulation of Bax and Caspase-3 at both the protein and mRNA expression levels. Moreover, EOFAZ was found to upregulate Bcl-2 protein and mRNA levels and to attenuate ox-LDL-induced HAECs injury caused by apoptosis, revealing both its therapeutic potential for endothelial cell injury protection and its clinical application for atherosclerosis.
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Addis R, Campesi I, Fois M, Capobianco G, Dessole S, Fenu G, Montella A, Cattaneo MG, Vicentini LM, Franconi F. Human umbilical endothelial cells (HUVECs) have a sex: characterisation of the phenotype of male and female cells. Biol Sex Differ 2014; 5:18. [PMID: 25535548 PMCID: PMC4273493 DOI: 10.1186/s13293-014-0018-2] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 11/20/2014] [Indexed: 01/04/2023] Open
Abstract
Background Human umbilical endothelial cells (HUVECs) are widely used to study the endothelial physiology and pathology that might be involved in sex and gender differences detected at the cardiovascular level. This study evaluated whether HUVECs are sexually dimorphic in their morphological, proliferative and migratory properties and in the gene and protein expression of oestrogen and androgen receptors and nitric oxide synthase 3 (NOS3). Moreover, because autophagy is influenced by sex, its degree was analysed in male and female HUVECs (MHUVECs and FHUVECs). Methods Umbilical cords from healthy, normal weight male and female neonates born to healthy non-obese and non-smoking women were studied. HUVEC morphology was analysed by electron microscopy, and their function was investigated by proliferation, viability, wound healing and chemotaxis assays. Gene and protein expression for oestrogen and androgen receptors and for NOS3 were evaluated by real-time PCR and Western blotting, respectively, and the expression of the primary molecules involved in autophagy regulation [protein kinase B (Akt), mammalian target of rapamycin (mTOR), beclin-1 and microtubule-associated protein 1 light chain 3 (LC3)] were detected by Western blotting. Results Cell proliferation, migration NOS3 mRNA and protein expression were significantly higher in FHUVECs than in MHUVECs. Conversely, beclin-1 and the LC3-II/LC3-I ratio were higher in MHUVECs than in FHUVECs, indicating that male cells are more autophagic than female cells. The expression of oestrogen and androgen receptor genes and proteins, the protein expression of Akt and mTOR and cellular size and shape were not influenced by sex. Body weights of male and female neonates were not significantly different, but the weight of male babies positively correlated with the weight of the mother, suggesting that the mother’s weight may exert a different influence on male and female babies. Conclusions The results indicate that sex differences exist in prenatal life and are parameter-specific, suggesting that HUVECs of both sexes should be used as an in vitro model to increase the quality and the translational value of research. The sex differences observed in HUVECs could be relevant in explaining the diseases of adulthood because endothelial dysfunction has a crucial role in the pathogenesis of cardiovascular diseases, diabetes mellitus, neurodegeneration and immune disease.
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Affiliation(s)
- Roberta Addis
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Ilaria Campesi
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy.,National Laboratory of Gender Medicine of the National Institute of Biostructures and Biosystems, Osilo, Sassari Italy
| | - Marco Fois
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Giampiero Capobianco
- Department of Surgical, Microsurgical and Medical Sciences, Gynaecologic and Obstetric Clinic, University of Sassari, Sassari, Italy
| | - Salvatore Dessole
- Department of Surgical, Microsurgical and Medical Sciences, Gynaecologic and Obstetric Clinic, University of Sassari, Sassari, Italy
| | - Grazia Fenu
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Andrea Montella
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy
| | - Maria Grazia Cattaneo
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Milano, Italy
| | - Lucia M Vicentini
- Department of Medical Biotechnology and Translational Medicine, University of Milano, Milano, Italy
| | - Flavia Franconi
- Department of Biomedical Sciences, University of Sassari, Sassari, Italy.,National Laboratory of Gender Medicine of the National Institute of Biostructures and Biosystems, Osilo, Sassari Italy.,Assessorato alle Politiche per la Persona, Region Basilicata, Italy
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Peng XL, Qu W, Wang LZ, Huang BQ, Ying CJ, Sun XF, Hao LP. Resveratrol ameliorates high glucose and high-fat/sucrose diet-induced vascular hyperpermeability involving Cav-1/eNOS regulation. PLoS One 2014; 9:e113716. [PMID: 25419974 PMCID: PMC4242725 DOI: 10.1371/journal.pone.0113716] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 10/29/2014] [Indexed: 12/19/2022] Open
Abstract
Vascular endothelial hyperpermeability is one of the manifestations of endothelial dysfunction. Resveratrol (Res) is considered to be beneficial in protecting endothelial function. However, currently, the exact protective effect and involved mechanisms of Res on endothelial dysfunction-hyperpermeability have not been completely clarified. The aim of present study is to investigate the effects of Res on amelioration of endothelial hyperpermeability and the role of caveolin-1 (Cav-1)/endothelial nitric oxide synthase (eNOS) pathway. Adult male Wistar rats were treated with a normal or high-fat/sucrose diet (HFS) with or without Res for 13 weeks. HFS and in vitro treatment with high glucose increased hyperpermeability in rat aorta, heart, liver and kidney and cultured bovine aortic endothelial cells (BAECs), respectively, which was attenuated by Res treatment. Application of Res reversed the changes in eNOS and Cav-1 expressions in aorta and heart of rats fed HFS and in BAECs incubated with high glucose. Res stimulated the formation of NO inhibited by high glucose in BAECs. Beta-Cyclodextrin (β-CD), caveolae inhibitor, showed the better beneficial effect than Res alone to up-regulate eNOS phosphorylative levels, while NG-Nitro-77 L-arginine methyl ester (L-NAME), eNOS inhibitor, had no effect on Cav-1 expression. Our studies suggested that HFS and in vitro treatment with high glucose caused endothelial hyperpermeability, which were ameliorated by Res at least involving Cav-1/eNOS regulation.
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Affiliation(s)
- Xiao lin Peng
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Nanshan Centre for Chronic Disease Control, Shenzhen, PR China
| | - Wei Qu
- Department of Hygiene, College of Basic Sciences, Binzhou Medical University, Yantai, PR China
| | - Lin zhi Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Bin qing Huang
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Chen jiang Ying
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Xiu fa Sun
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
| | - Li ping Hao
- Department of Nutrition and Food Hygiene, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Hubei Key Laboratory of Food Nutrition and Safety, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China
- * E-mail:
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Pyrroloquinoline quinone protects mouse brain endothelial cells from high glucose-induced damage in vitro. Acta Pharmacol Sin 2014; 35:1402-10. [PMID: 25283505 DOI: 10.1038/aps.2014.4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 01/14/2014] [Indexed: 12/31/2022] Open
Abstract
AIM To investigate the effects of pyrroloquinoline quinone (PQQ), an oxidoreductase cofactor, on high glucose-induced mouse endothelial cell damage in vitro. METHODS Mouse brain microvascular endothelial bEND.3 cells were exposed to different glucose concentrations (5.56, 25 and 40 mmol/L) for 24 or 48 h. The cell viability was examined using MTT assay. Flow cytometry was used to analyze the apoptosis and ROS levels in the cells. MitoTracker Green staining was used to examine the mitochondria numbers in the cells. Western blot analysis was used to analyze the expression of HIF-1α and the proteins in JNK pathway. RESULTS Treatment of bEND.3 cells with high glucose significantly decreased the cell viability, while addition of PQQ (1 and 10 μmol/L) reversed the high glucose-induced cell damage in a concentration-dependent manner. Furthermore, PQQ (100 μmol/L) significantly suppressed the high glucose-induced apoptosis and ROS production in the cells. PQQ significantly reversed the high glucose-induced reduction in both the mitochondrial membrane potential and mitochondria number in the cells. The high glucose treatment significantly increased the expression of HIF-1α and JNK phosphorylation in the cells, and addition of PQQ led to a further increase of HIF-1α level and a decrease of JNK phosphorylation. Addition of JNK inhibitor SP600125 (10 μmol/L) also significantly suppressed high glucose-induced apoptosis and JNK phosphorylation in bEND.3 cells. CONCLUSION PQQ protects mouse brain endothelial cells from high glucose damage in vitro by suppressing intracellular ROS and apoptosis via inhibiting JNK signaling pathway.
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Feng B, Cao Y, Chen S, Ruiz M, Chakrabarti S. Reprint of: miRNA-1 regulates endothelin-1 in diabetes. Life Sci 2014; 118:275-80. [PMID: 25307117 DOI: 10.1016/j.lfs.2014.10.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 11/27/2013] [Accepted: 12/23/2013] [Indexed: 01/15/2023]
Abstract
AIMS MicroRNAs (miRNAs) play important roles in several biological processes. In this study, we investigated the role of miR-1, an endothelin-1 (ET-1) targeting miRNA, in endothelial cells (ECs) and tissues of diabetic animals. ET-1 is known to be of pathogenetic significance in several chronic diabetic complications. MAIN METHODS PCR array was used to identify alterations of miRNA expression in ECs exposed to glucose. miR-1 expression was validated by TaqMan real-time PCR assay. Human retinal ECs (HRECs) and human umbilical vein ECs (HUVECs) exposed to various glucose levels with or without miR-1 mimic transfection, and tissues from streptozotocin-induced diabetic animals after two months of follow-up, were examined for miR-1 expression, as well as ET-1 and fibronectin (FN) mRNA and protein levels. KEY FINDINGS Array analyses showed glucose-induced alterations of 125 miRNAs (out of 381) in ECs exposed to 25 mM glucose compared to 5 mM glucose. Fifty-one miRNAs were upregulated and 74 were downregulated. 25 mM glucose decreased miR-1 expression and increased ET-1 mRNA and protein levels. miR-1 mimic transfection prevented HG-induced ET-1 upregulation. Furthermore, glucose induced upregulation of FN, which is mediated partly by ET-1, was also prevented by such transfection. Diabetic animals showed decreased miR-1 expression in the retina, heart and kidneys. In parallel, ET-1 mRNA expressions were increased in these tissues of diabetic animals, in association with upregulation of FN. SIGNIFICANCE These results indicate a novel glucose-induced mechanism of tissue damage, in which miR-1 regulates ET-1 expressions in diabetes. Identifying such mechanisms may lead to RNA based treatment for diabetic complications.
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Affiliation(s)
- Biao Feng
- Department of Pathology, Western University, London, ON, Canada
| | - Yanan Cao
- Department of Pathology, Western University, London, ON, Canada; Mudanjiang Medical University, China
| | - Shali Chen
- Department of Pathology, Western University, London, ON, Canada
| | - Michael Ruiz
- Department of Pathology, Western University, London, ON, Canada
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Hu YW, Zhao JY, Li SF, Huang JL, Qiu YR, Ma X, Wu SG, Chen ZP, Hu YR, Yang JY, Wang YC, Gao JJ, Sha YH, Zheng L, Wang Q. RP5-833A20.1/miR-382-5p/NFIA-dependent signal transduction pathway contributes to the regulation of cholesterol homeostasis and inflammatory reaction. Arterioscler Thromb Vasc Biol 2014; 35:87-101. [PMID: 25265644 DOI: 10.1161/atvbaha.114.304296] [Citation(s) in RCA: 152] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Cardiovascular disease caused by atherosclerosis is the number one cause of death in Western countries and threatens to become the major cause of morbidity and mortality worldwide. Long noncoding RNAs are emerging as new players in gene regulation, but how long noncoding RNAs operate in the development of atherosclerosis remains unclear. APPROACH AND RESULTS Using microarray analysis, we found that long noncoding RNA RP5-833A20.1 expression was upregulated, whereas nuclear factor IA (NFIA) expression was downregulated in human acute monocytic leukemia macrophage-derived foam cells. Moreover, we showed that long noncoding RNA RP5-833A20.1 may decreases NFIA expression by inducing hsa-miR-382-5p expression in vitro. We found that the RP5-833A20.1/hsa-miR-382-5p/NFIA pathway is essential to the regulation of cholesterol homeostasis and inflammatory responses in human acute monocytic leukemia macrophages. Lentivirus-mediated NFIA overexpression increased high-density lipoprotein cholesterol circulation, reduced low-density lipoprotein cholesterol, and very-low-density lipoprotein cholesterol circulation, decreased circulation of inflammatory cytokines, including interleukin-1β, interleukin-6, tumor necrosis factor-α, and C-reactive protein, enhanced reverse cholesterol transport, and promoted regression of atherosclerosis in apolipoprotein E-deficient mice. CONCLUSIONS Our findings indicated that the RP5-833A20.1/miR-382-5p/NFIA pathway was essential to the regulation of cholesterol homeostasis and inflammatory reactions and suggested that NFIA may represent a therapeutic target to ameliorate cardiovascular disease.
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Affiliation(s)
- Yan-Wei Hu
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jia-Yi Zhao
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Shu-Fen Li
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jin-Lan Huang
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yu-Rong Qiu
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xin Ma
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Shao-Guo Wu
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Zhi-Ping Chen
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ya-Rong Hu
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jun-Yao Yang
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yan-Chao Wang
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Ji-Juan Gao
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yan-Hua Sha
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Lei Zheng
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
| | - Qian Wang
- From the Laboratory Medicine Center (Y.-W.H., J.-Y.Z., S.-F.L., J.-L.H., Y.-R.Q., S.-G.W., Z.-P.C., Y.-R.H., J.-Y.Y., Y.-C.W., J.-J.G., Y.-H.S., L.Z., Q.W.) and Department of Anesthesiology (X.M.), Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
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Biodistribution of 99mTc–2-aminoestrone-3-methyl ether as a potential radiotracer for inflammation imaging. J Radioanal Nucl Chem 2014. [DOI: 10.1007/s10967-014-3320-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Functional and morphological characteristics of the retinal and choroidal vasculature. Prog Retin Eye Res 2014; 40:53-93. [DOI: 10.1016/j.preteyeres.2014.02.001] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 02/14/2014] [Accepted: 02/17/2014] [Indexed: 11/24/2022]
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Modulation of endothelial glycocalyx structure under inflammatory conditions. Mediators Inflamm 2014; 2014:694312. [PMID: 24803742 PMCID: PMC3997148 DOI: 10.1155/2014/694312] [Citation(s) in RCA: 158] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Accepted: 03/03/2014] [Indexed: 01/08/2023] Open
Abstract
The glycocalyx of the endothelium is an intravascular compartment that creates a barrier between circulating blood and the vessel wall. The glycocalyx is suggested to play an important role in numerous physiological processes including the regulation of vascular permeability, the prevention of the margination of blood cells to the vessel wall, and the transmission of shear stress. Various theoretical models and experimental approaches provide data about changes to the structure and functions of the glycocalyx under various types of inflammatory conditions. These alterations are suggested to promote inflammatory processes in vessels and contribute to the pathogenesis of number of diseases. In this review we summarize current knowledge about the modulation of the glycocalyx under inflammatory conditions and the consequences for the course of inflammation in vessels. The structure and functions of endothelial glycocalyx are briefly discussed in the context of methodological approaches regarding the determination of endothelial glycocalyx and the uncertainty and challenges involved in glycocalyx structure determination. In addition, the modulation of glycocalyx structure under inflammatory conditions and the possible consequences for pathogenesis of selected diseases and medical conditions (in particular, diabetes, atherosclerosis, ischemia/reperfusion, and sepsis) are summarized. Finally, therapeutic strategies to ameliorate glycocalyx dysfunction suggested by various authors are discussed.
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L. Berg E, Hsu YC, Lee JA. Consideration of the cellular microenvironment: physiologically relevant co-culture systems in drug discovery. Adv Drug Deliv Rev 2014; 69-70:190-204. [PMID: 24524933 DOI: 10.1016/j.addr.2014.01.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 01/16/2014] [Accepted: 01/28/2014] [Indexed: 01/15/2023]
Abstract
There is renewed interest in phenotypic approaches to drug discovery, using cell-based assays to select new drugs, with the goal of improving pharmaceutical success. Assays that are more predictive of human biology can help researchers achieve this goal. Primary cells are more physiologically relevant to human biology and advances are being made in methods to expand the available cell types and improve the potential clinical translation of these assays through the use of co-cultures or three-dimensional (3D) technologies. Of particular interest are assays that may be suitable for industrial scale drug discovery. Here we review the use of primary human cells and co-cultures in drug discovery and describe the characteristics of co-culture models for inflammation biology (BioMAP systems), neo-vascularization and tumor microenvironments. Finally we briefly describe technical trends that may enable and impact the development of physiologically relevant co-culture assays in the near future.
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Feng B, Cao Y, Chen S, Ruiz M, Chakrabarti S. miRNA-1 regulates endothelin-1 in diabetes. Life Sci 2014; 98:18-23. [DOI: 10.1016/j.lfs.2013.12.199] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 11/27/2013] [Accepted: 12/23/2013] [Indexed: 01/09/2023]
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Rozanski M, Richter TB, Grittner U, Endres M, Fiebach JB, Jungehulsing GJ. Elevated levels of hemoglobin A1c are associated with cerebral white matter disease in patients with stroke. Stroke 2014; 45:1007-11. [PMID: 24569817 DOI: 10.1161/strokeaha.114.004740] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND PURPOSE This study was conducted to investigate the association of cerebral white matter disease (WMD) on MRI with vascular risk factors and laboratory findings in consecutive first acute ischemic stroke patients. METHODS Acute ischemic stroke patients underwent MRI ≤24 hours after stroke onset and follow-up on day 2. WMD was scored on fluid attenuated inversion recovery MRI according to the Wahlund score. Vascular risk factors and laboratory parameters were assessed during hospital stay. Univariate and multiple logistic regression analyses were performed. RESULTS We included 512 patients with first acute ischemic stroke (mean age, 68.5 [SD, 13.2] years; 192 women (37.5%); median National Institutes of Health Stroke Scale on admission, 3 [interquartile range, 1-6]; and median Wahlund score, 4 [interquartile range, 2-9]). WMD was present in 460 (89.8%) patients. In univariate analysis, age, arterial hypertension, reduced estimated glomerular filtration rate, hemoglobin A1c (HbA1c) levels, diabetes mellitus, and female sex were associated with the presence of WMD (P<0.05). In multiple regression analysis, age, arterial hypertension, and elevated levels of HbA1c (P<0.05) remained independently associated with the extent of WMD. CONCLUSIONS Among known risk factors, higher levels of HbA1c were associated with cerebral WMD in stroke patients. This may suggest that chronic disturbance of glycemia measured by HbA1c plays a role in the pathophysiology of WMD. CLINICAL TRIAL REGISTRATION URL http://www.clinicaltrials.gov. Unique identifier: NCT00715533.
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Affiliation(s)
- Michal Rozanski
- From the Center for Stroke Research Berlin (M.R., T.B.R., U.G., M.E., J.B.F., G.J.J.), Department of Neurology (M.R., M.E.), ExcellenceCluster NeuroCure (M.E.), German Center for Neurodegenerative Diseases (M.E.), and German Center for Cardiovascular Research (M.E.), and Department for Biostatistics and Clinical Epidemiology (U.G.), Charité-Universitätsmedizin, Berlin; and Department of Neurology, The Jewish Hospital, Berlin (G.J.J.)
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Karaca M, Coban E, Ozdem S, Unal M, Salim O, Yucel O. The association between endothelial dysfunction and hypertensive retinopathy in essential hypertension. Med Sci Monit 2014; 20:78-82. [PMID: 24441931 PMCID: PMC3907530 DOI: 10.12659/msm.889659] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Endothelial dysfunction, which is characterized by an imbalance between relaxing and contracting factors, procoagulant and anticoagulant substances, and between pro-inflammatory mediators, may play a particularly significant role in the pathogenesis of atherosclerosis. Numerous experimental and clinical reports suggest that a high von Willebrand factor (vWF) level reflects endothelial damage or dysfunction. Hypertensive retinopathy (HR) is a condition characterized by a spectrum of retinal vascular signs in people with elevated blood pressure. The pathophysiological mechanism of HR is not completely understood. Elevated blood pressure alone does not fully account for the extent of retinopathy. Endothelial dysfunction and mechanisms known to be involved in vascular lesions may be involved in the pathophysiological mechanism of HR. Therefore, this study was designed to answer the following questions: (i) Do vWf levels change in HR? and (ii) Is there any relation between degree of HR and vWf levels? MATERIAL AND METHODS This study included 80 hypertensive patients with HR. Group 1 comprised 40 patients with grade I HR, and group 2 comprised 40 patients with grade II HR. We selected 40 healthy subjects for the control group. RESULTS Level of vWf in group 2 was significantly higher than in group 1 (p=0.017) and the control group (p<0.001), and it was also higher in group 1 than in the control group (p<0.005). Also, vWf showed positive correlation with degree of HR in the hypertensive group (r=0.284, p=0.009). CONCLUSIONS Our study suggests that endothelial dysfunction, which is a mechanism known to be involved in vascular lesions, may promote the development of HR.
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Affiliation(s)
- Mustafa Karaca
- Department of Internal Medicine, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Erkan Coban
- Department of Internal Medicine, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Sebahat Ozdem
- Department of Medical Biochemistry, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Mustafa Unal
- Department of Ophtalmology, Akdeniz University Faculty of Medicine, Antalya, Turkey
| | - Ozan Salim
- Department of Internal Medicine, Division of Hematology, Akdeniz University, Antalya, Turkey
| | - Orhan Yucel
- Department of Internal Medicine, Division of Hematology, Akdeniz University, Antalya, Turkey
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Liu LL, Yan L, Chen YH, Zeng GH, Zhou Y, Chen HP, Peng WJ, He M, Huang QR. A role for diallyl trisulfide in mitochondrial antioxidative stress contributes to its protective effects against vascular endothelial impairment. Eur J Pharmacol 2014; 725:23-31. [PMID: 24440170 DOI: 10.1016/j.ejphar.2014.01.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 12/23/2013] [Accepted: 01/08/2014] [Indexed: 10/25/2022]
Abstract
Persistent hyperglycemia increases a systemic oxidative stress, causing the onset of vascular endothelial dysfunction and atherosclerosis. Diallyl trisulfide (DAT), a natural organosulfur compound in garlic, has been reported to have actions of dilating blood vessels and antibacteria, etc. In this study, models of obese diabetic rat in vivo and high glucose concentration (HG)-induced endothelial cell injury in vitro were used to investigate the protective effects of DAT on vascular endothelial injury and its underlying mechanisms. In the in vivo model, the obese diabetic rats were injected venously with DAT (5.0 mg kg(-1)d(-1)) and Vitamin E (1.0 mg kg(-1)d(-1)) respectively, once daily for 7 consecutive days. In the in vitro model, HG-injured HUVEC were treated with or without DAT (25 µmol L(-1), 50 µmol L(-1), 100 µmol L(-1)) or Vitamin E (25 µmol L(-1)) respectively for 24h. The extents of vascular endothelial injury and protective effects of DAT were evaluated. The results both in vivo and in vitro displayed that DAT-treatment significantly attenuated the endothelial cell impairments. Besides, DAT-treatment markedly decreased the levels of malondialdehyde (MDA) and reactive oxygen species, whereas elevated the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in mitochondrium. Moreover, DAT-treatment considerably improved mitochondrial respiration function. Taken together, our results suggest that DAT protects vascular endothelium from HG or hyperglycemia induced-injury by reducing mitochondrial oxidative stress. The findings provide a novel insight for DAT to potentially treat the oxidative stress diseases, i.e., atherosclerosis, diabetes, and neurodegenerative diseases.
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Affiliation(s)
- Li-Li Liu
- Key Laboratory of Basic Pharmacology in Jiangxi Province, Nanchang University, Nanchang 330006, PR China
| | - Li Yan
- Key Laboratory of Basic Pharmacology in Jiangxi Province, Nanchang University, Nanchang 330006, PR China
| | - Yuan-Hong Chen
- Key Laboratory of Basic Pharmacology in Jiangxi Province, Nanchang University, Nanchang 330006, PR China
| | - Guo-Hua Zeng
- Key Laboratory of Basic Pharmacology in Jiangxi Province, Nanchang University, Nanchang 330006, PR China
| | - Ying Zhou
- Key Laboratory of Basic Pharmacology in Jiangxi Province, Nanchang University, Nanchang 330006, PR China
| | - He-Ping Chen
- Key Laboratory of Basic Pharmacology in Jiangxi Province, Nanchang University, Nanchang 330006, PR China
| | - Wei-Jie Peng
- Key State Laboratory of Food Science & Technology, Nanchang University, Nanchang 330047, PR China; Key Laboratory of Basic Pharmacology in Jiangxi Province, Nanchang University, Nanchang 330006, PR China
| | - Ming He
- Key State Laboratory of Food Science & Technology, Nanchang University, Nanchang 330047, PR China; Key Laboratory of Basic Pharmacology in Jiangxi Province, Nanchang University, Nanchang 330006, PR China.
| | - Qi-Ren Huang
- Key State Laboratory of Food Science & Technology, Nanchang University, Nanchang 330047, PR China; Key Laboratory of Basic Pharmacology in Jiangxi Province, Nanchang University, Nanchang 330006, PR China.
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Yang M, Liu C, Niu M, Hu Y, Guo M, Zhang J, Luo Y, Yuan W, Yang M, Yun M, Guo L, Yan J, Liu D, Liu J, Jiang Y. Phage-display library biopanning and bioinformatic analysis yielded a high-affinity peptide to inflamed vascular endothelium both in vitro and in vivo. J Control Release 2014; 174:72-80. [DOI: 10.1016/j.jconrel.2013.11.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 10/20/2013] [Accepted: 11/07/2013] [Indexed: 12/26/2022]
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Teo AKK, Wagers AJ, Kulkarni RN. New opportunities: harnessing induced pluripotency for discovery in diabetes and metabolism. Cell Metab 2013; 18:775-91. [PMID: 24035588 PMCID: PMC3858409 DOI: 10.1016/j.cmet.2013.08.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The landmark discovery of induced pluripotent stem cells (iPSCs) by Shinya Yamanaka has transformed regenerative biology. Previously, insights into the pathogenesis of chronic human diseases have been hindered by the inaccessibility of patient samples. However, scientists are now able to convert patient fibroblasts into iPSCs and differentiate them into disease-relevant cell types. This ability opens new avenues for investigating disease pathogenesis and designing novel treatments. In this review, we highlight the uses of human iPSCs to uncover the underlying causes and pathological consequences of diabetes and metabolic syndromes, multifactorial diseases whose etiologies have been difficult to unravel using traditional methodologies.
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Affiliation(s)
- Adrian Kee Keong Teo
- Section of Islet Cell and Regenerative Biology, Joslin Diabetes Center, Department of Medicine, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA 02215, USA
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Li XL, Li BY, Cheng M, Yu F, Yin WB, Cai Q, Zhang Z, Zhang JH, Wang JF, Zhou RH, Gao HQ. PIMT prevents the apoptosis of endothelial cells in response to glycated low density lipoproteins and protective effects of grape seed procyanidin B2. PLoS One 2013; 8:e69979. [PMID: 23922881 PMCID: PMC3724603 DOI: 10.1371/journal.pone.0069979] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 06/14/2013] [Indexed: 11/28/2022] Open
Abstract
Background The development of diabetic angiopathy is associated with profound vascular endothelial cells (VEC) dysfunction and apoptosis. Glycated low density lipoproteins (gly-LDL) continuously produced in the setting of diabetic patients play an important role in causing VEC dysfunction and apoptosis. However, the underlying molecular mechanism remains largely elusive. Protein L-isoaspartyl methyltransferase (PIMT) is a widely expressed protein repair enzyme by multiple cell types of arterial wall including VEC. Our previous proteomic studies showed that the expression of PIMT was significantly decreased in the aorta of diabetic rats as compared with control rats and treatment with grape seed procyanidin extracts significantly increased the PIMT expression in diabetic rats. We hypothesized that PIMT plays a critical role in gly-LDL induced VEC apoptosis; grape seed procyanidin B2 (GSPB2) protect against gly-LDL induced VEC apoptosis through PIMT regulation. Methods and Results HUVEC transfected negative control and PIMT siRNA were treated with or without GSPB2 (10 µmol/L) for 48 h. Moreover, HUVEC of PIMT overexpression were stimulated by gly-LDL (50 µg/ml) in the presence or absence of GSPB2 (10 µmol/L) for 48 h. Our results showed that gly-LDL downregulated PIMT expression and PIMT overexpression or GSPB2 significantly attenuated gly-LDL induced VEC apoptosis. PIMT siRNA increased VEC apoptosis with up-regulation of p53, cytochrome c release, caspase-9 and caspase-3 activation. Mechanistically, overexpression of PIMT or GSPB2 increased the phosphorylation of ERK1/2 and GSK3β in the gly-LDL induced VEC. Conclusion In summary, our study identified PIMT as a key player responsible for gly-LDL induced VEC apoptosis and GSPB2 protect against gly-LDL induced VEC apoptosis by PIMT up-regulation. Targeting PIMT including use of GSPB2 could be turned into clinical application in the fighting against diabetic vascular complications.
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Affiliation(s)
- Xiao-li Li
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Department of Geriatric Endocrinology, Qi-Lu Hospital of Shandong University, Jinan, China
- Department of Drug Purchase and Supply, Qi-Lu Hospital of Shandong University, Jinan, China
| | - Bao-ying Li
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Department of Geriatric Endocrinology, Qi-Lu Hospital of Shandong University, Jinan, China
| | - Mei Cheng
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Department of Geriatric Endocrinology, Qi-Lu Hospital of Shandong University, Jinan, China
| | - Fei Yu
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Department of Geriatric Endocrinology, Qi-Lu Hospital of Shandong University, Jinan, China
| | - Wen-bin Yin
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Department of Geriatric Endocrinology, Qi-Lu Hospital of Shandong University, Jinan, China
| | - Qian Cai
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Department of Geriatric Endocrinology, Qi-Lu Hospital of Shandong University, Jinan, China
| | - Zhen Zhang
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Department of Geriatric Endocrinology, Qi-Lu Hospital of Shandong University, Jinan, China
| | - Jian-hua Zhang
- Institute of Basic Science, Medical Science Academy of Shandong, Jinan, China
| | - Jun-fu Wang
- Institute of Basic Science, Medical Science Academy of Shandong, Jinan, China
| | - Rui-hai Zhou
- Division of Cardiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of America
| | - Hai-qing Gao
- Key Laboratory of Cardiovascular Proteomics of Shandong Province, Department of Geriatric Endocrinology, Qi-Lu Hospital of Shandong University, Jinan, China
- * E-mail:
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Jansen F, Yang X, Franklin BS, Hoelscher M, Schmitz T, Bedorf J, Nickenig G, Werner N. High glucose condition increases NADPH oxidase activity in endothelial microparticles that promote vascular inflammation. Cardiovasc Res 2013; 98:94-106. [DOI: 10.1093/cvr/cvt013] [Citation(s) in RCA: 155] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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141
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Chen KC, Juo SHH. MicroRNAs in atherosclerosis. Kaohsiung J Med Sci 2012; 28:631-40. [DOI: 10.1016/j.kjms.2012.04.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Accepted: 02/20/2012] [Indexed: 02/04/2023] Open
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Cheranova D, Gibson M, Kibiryeva N, Zhang LQ, Ye SQ. Pleiotropic functions of pre-B-cell colony-enhancing factor (PBEF) revealed by transcriptomics of human pulmonary microvascular endothelial cells treated with PBEFsiRNA. Genes Cells 2012; 17:420-30. [PMID: 22487217 DOI: 10.1111/j.1365-2443.2012.01598.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
This study profiled transcriptomes of human pulmonary microvascular endothelial cells (HMVEC-L) treated with pre-B-cell colony-enhancing factor (PBEF) siRNA or scrambled RNA to gain insight into transcriptional regulations of PBEF on the endothelial function using the Affymetrix GeneChips HG-U133 plus 2. Several important themes are emerged from this study. First, PBEF affected expressions of multiple genes in the endothelium. Expression of 373 genes was increased and 64 genes decreased by at least 1.3-fold in the PBEFsiRNA-treated HMVEC-L versus the scramble RNA control. Second, the microarray results confirmed previous reports of PBEF-mediated gene expressions in some pathways but provided a more complete repertoire of molecules in those pathways. Third, most of the affected canonical pathways have not previously been reported to be PBEF responsive. Fourth, network analysis supports that PBEF has pleiotropic functions. Our first transcriptome analysis of human pulmonary microvascular endothelial cells treated with PBEFsiRNA has provided important insights into the transcriptional regulation of gene expression in HMVEC-L cells by PBEF. Further in-depth analysis of these transcriptional regulations may shed light on molecular mechanisms underlying PBEF-mediated endothelial functions and dysfunctions in various diseases and provide new leads of therapeutic targets to those diseases.
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Affiliation(s)
- Dilyara Cheranova
- Department of Pediatrics, Children's Mercy Hospitals and Clinics, University of Missouri School of Medicine, Kansas City, MO 64108, USA
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