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Serikbaeva A, Li Y, Ma S, Yi D, Kazlauskas A. Resilience to diabetic retinopathy. Prog Retin Eye Res 2024; 101:101271. [PMID: 38740254 PMCID: PMC11262066 DOI: 10.1016/j.preteyeres.2024.101271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 05/03/2024] [Accepted: 05/10/2024] [Indexed: 05/16/2024]
Abstract
Chronic elevation of blood glucose at first causes relatively minor changes to the neural and vascular components of the retina. As the duration of hyperglycemia persists, the nature and extent of damage increases and becomes readily detectable. While this second, overt manifestation of diabetic retinopathy (DR) has been studied extensively, what prevents maximal damage from the very start of hyperglycemia remains largely unexplored. Recent studies indicate that diabetes (DM) engages mitochondria-based defense during the retinopathy-resistant phase, and thereby enables the retina to remain healthy in the face of hyperglycemia. Such resilience is transient, and its deterioration results in progressive accumulation of retinal damage. The concepts that co-emerge with these discoveries set the stage for novel intellectual and therapeutic opportunities within the DR field. Identification of biomarkers and mediators of protection from DM-mediated damage will enable development of resilience-based therapies that will indefinitely delay the onset of DR.
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Affiliation(s)
- Anara Serikbaeva
- Department of Physiology and Biophysics, University of Illinois at Chicago, 1905 W Taylor St, Chicago, IL 60612, USA
| | - Yanliang Li
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, 1905 W Taylor St, Chicago, IL 60612, USA
| | - Simon Ma
- Department of Bioengineering, University of Illinois at Chicago, 1905 W Taylor St, Chicago, IL 60612, USA
| | - Darvin Yi
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, 1905 W Taylor St, Chicago, IL 60612, USA; Department of Bioengineering, University of Illinois at Chicago, 1905 W Taylor St, Chicago, IL 60612, USA
| | - Andrius Kazlauskas
- Department of Physiology and Biophysics, University of Illinois at Chicago, 1905 W Taylor St, Chicago, IL 60612, USA; Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, 1905 W Taylor St, Chicago, IL 60612, USA.
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Aldokhayyil M, Gomez DH, Cook MD, Kavazis AN, Roberts MD, Geetha T, Brown MD. Influence of Race and High Laminar Shear Stress on TNFR1 Signaling in Endothelial Cells. Int J Mol Sci 2023; 24:14723. [PMID: 37834170 PMCID: PMC10572906 DOI: 10.3390/ijms241914723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/15/2023] [Accepted: 09/20/2023] [Indexed: 10/15/2023] Open
Abstract
Tumor necrosis factor (TNF) binding to endothelial TNF receptor-I (TNFR-I) facilitates monocyte recruitment and chronic inflammation, leading to the development of atherosclerosis. In vitro data show a heightened inflammatory response and atherogenic potential in endothelial cells (ECs) from African American (AA) donors. High laminar shear stress (HSS) can mitigate some aspects of racial differences in endothelial function at the cellular level. We examined possible racial differences in TNF-induced monocyte adhesion and TNFR1 signaling complex expression/activity, along with the effects of HSS. Tohoku Hospital Pediatrics-1 (THP-1) monocytes were used in a co-culture system with human umbilical vein ECs (HUVECs) from Caucasian American (CA) and AA donors to examine racial differences in monocyte adhesion. An in vitro exercise mimetic model was applied to investigate the potential modulatory effect of HSS. THP-1 adherence to ECs and TNF-induced nuclear factor kappa B (NF-κB) DNA binding were elevated in AA ECs compared to CA ECs, but not significantly. We report no significant racial differences in the expression of the TNFR-I signaling complex. Application of HSS significantly increased the expression and shedding of TNFR-I and the expression of TRAF3, and decreased the expression of TRAF5 in both groups. Our data does not support TNF-induced NF-κB activation as a potential mediator of racial disparity in this model. Other pathways and associated factors activated by the TNFR1 signaling complex are recommended targets for future research.
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Affiliation(s)
- Maitha Aldokhayyil
- School of Kinesiology, Auburn University, Auburn, AL 36849, USA
- Department of Physical Therapy, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia
| | - Dulce H. Gomez
- School of Kinesiology, Auburn University, Auburn, AL 36849, USA
| | - Marc D. Cook
- Department of Kinesiology, North Carolina Agriculture and Technology State University, Greensboro, NC 27411, USA
| | | | | | - Thangiah Geetha
- Department of Nutritional Sciences, College of Human Sciences, Auburn University, Auburn, AL 36849, USA
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Wautier JL, Wautier MP. Pro- and Anti-Inflammatory Prostaglandins and Cytokines in Humans: A Mini Review. Int J Mol Sci 2023; 24:ijms24119647. [PMID: 37298597 DOI: 10.3390/ijms24119647] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/18/2023] [Accepted: 05/30/2023] [Indexed: 06/12/2023] Open
Abstract
Inflammation has been described for two millennia, but cellular aspects and the paradigm involving different mediators have been identified in the recent century. Two main groups of molecules, the prostaglandins (PG) and the cytokines, have been discovered and play a major role in inflammatory processes. The activation of prostaglandins PGE2, PGD2 and PGI2 results in prominent symptoms during cardiovascular and rheumatoid diseases. The balance between pro- and anti-inflammatory compounds is nowadays a challenge for more targeted therapeutic approaches. The first cytokine was described more than a century ago and is now a part of different families of cytokines (38 interleukins), including the IL-1 and IL-6 families and TNF and TGFβ families. Cytokines can perform a dual role, being growth promotors or inhibitors and having pro- and anti-inflammatory properties. The complex interactions between cytokines, vascular cells and immune cells are responsible for dramatic conditions and lead to the concept of cytokine storm observed during sepsis, multi-organ failure and, recently, in some cases of COVID-19 infection. Cytokines such as interferon and hematopoietic growth factor have been used as therapy. Alternatively, the inhibition of cytokine functions has been largely developed using anti-interleukin or anti-TNF monoclonal antibodies in the treatment of sepsis or chronic inflammation.
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Affiliation(s)
- Jean-Luc Wautier
- Faculté de Médecine, Université Denis Diderot Paris Cité, 75013 Paris, France
| | - Marie-Paule Wautier
- Faculté de Médecine, Université Denis Diderot Paris Cité, 75013 Paris, France
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Davis MJ, Earley S, Li YS, Chien S. Vascular mechanotransduction. Physiol Rev 2023; 103:1247-1421. [PMID: 36603156 PMCID: PMC9942936 DOI: 10.1152/physrev.00053.2021] [Citation(s) in RCA: 45] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 09/26/2022] [Accepted: 10/04/2022] [Indexed: 01/07/2023] Open
Abstract
This review aims to survey the current state of mechanotransduction in vascular smooth muscle cells (VSMCs) and endothelial cells (ECs), including their sensing of mechanical stimuli and transduction of mechanical signals that result in the acute functional modulation and longer-term transcriptomic and epigenetic regulation of blood vessels. The mechanosensors discussed include ion channels, plasma membrane-associated structures and receptors, and junction proteins. The mechanosignaling pathways presented include the cytoskeleton, integrins, extracellular matrix, and intracellular signaling molecules. These are followed by discussions on mechanical regulation of transcriptome and epigenetics, relevance of mechanotransduction to health and disease, and interactions between VSMCs and ECs. Throughout this review, we offer suggestions for specific topics that require further understanding. In the closing section on conclusions and perspectives, we summarize what is known and point out the need to treat the vasculature as a system, including not only VSMCs and ECs but also the extracellular matrix and other types of cells such as resident macrophages and pericytes, so that we can fully understand the physiology and pathophysiology of the blood vessel as a whole, thus enhancing the comprehension, diagnosis, treatment, and prevention of vascular diseases.
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Affiliation(s)
- Michael J Davis
- Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, Missouri
| | - Scott Earley
- Department of Pharmacology, University of Nevada, Reno, Nevada
| | - Yi-Shuan Li
- Department of Bioengineering, University of California, San Diego, California
- Institute of Engineering in Medicine, University of California, San Diego, California
| | - Shu Chien
- Department of Bioengineering, University of California, San Diego, California
- Institute of Engineering in Medicine, University of California, San Diego, California
- Department of Medicine, University of California, San Diego, California
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The Impact of Myocardial Bridging on the Coronary Functional Test in Patients with Ischaemia with Non-Obstructive Coronary Artery Disease. Life (Basel) 2022; 12:life12101560. [PMID: 36294995 PMCID: PMC9604606 DOI: 10.3390/life12101560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/03/2022] [Accepted: 10/06/2022] [Indexed: 01/03/2023] Open
Abstract
Background: The possibility of myocardial bridging (MB) causing chest pain has been widely reported; however, the effect of MB on coronary microvessels has not been thoroughly investigated. Therefore, this study evaluated the effects of MB on epicardial coronary artery and coronary microvascular function during coronary angiography (CAG) and coronary function test (CFT) in patients with ischaemia with non-obstructive coronary artery disease (INOCA). Methods: This study included 62 patients with INOCA who underwent CAG and CFT for the left anterior descending coronary artery (LAD) to evaluate chest pain. In the CFT, acetylcholine was first administered intracoronarily in a stepwise manner, followed by chest symptoms, electrocardiographic ST-T changes and CAG. Positive coronary spasm was defined as coronary vasoconstriction of >90% on CAG accompanied by chest symptoms or electrocardiographic ST-T changes. After nitroglycerin administration, CAG was performed to assess MB, which was defined as systolic narrowing of the coronary artery diameter by >20% compared with that in diastole. Coronary flow reserve (CFR) and index of microcirculatory resistance (IMR) were subsequently obtained via transvenous adenosine triphosphate infusion using a pressure wire. Coronary microvascular vasodilatory dysfunction (CMD) was defined as a CFR of <2.0 or an IMR of ≥25 units. Results: Of the 62 patients, 15 (24%) had MB. The patients’ characteristics did not differ between the two groups. Regarding the CAG and CFT results, the presence of coronary spasm in the LAD was higher in the MB (+) group (87%) than in the MB (−) group (53%, p = 0.02), whereas the values of CFR (MB (+): 2.7 ± 1.4, MB (−): 2.8 ± 1.1) and IMR (MB (+): 26.9 ± 1.0, MB (−): 30.0 ± 17.3) and the presence of CMD (MB (+): 53%, MB (−): 60%) were similar in the two groups. Conclusions: The findings suggest that MB predisposes patients with INOCA to coronary spasms. Conversely, MBs may have a limited effect on microvessels, particularly in such patients.
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Yan X, Shang X, Feng Z, Chen B, Wu Y, Zhou Y, Li Y, Zhang L. Triterpenoid saponins of Ilex pubescens against TNF-α induced inflammation and apoptosis in human umbilical vein endothelial cells via autophagy pathway. J Pharm Pharmacol 2022; 74:1749-1757. [PMID: 36206186 DOI: 10.1093/jpp/rgac074] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/05/2022] [Indexed: 11/14/2022]
Abstract
OBJECTIVES Triterpenoid saponins of Ilex pubescens (IPTS), the main active components of Ilex pubescens, has a therapeutic effect on atherosclerosis (AS). The ingredients in IPTS that could be intracellularly transported by human umbilical vein endothelial cells (HUVECs) may play an essential role in AS. This study attempted to explore its mechanism from the perspectives of HUVECs' inflammation, apoptosis, and autophagy. METHODS By using a tumour necrosis factor-α (TNF-α)-induced HUVECs injury model, cell viability and the expression of intercellular adhesion molecule 1 (ICAM1), matrix metalloproteinase 9 (MMP9), cleave-caspase-3 and cleave-caspase-9, in combination with the results of flow cytometry, JC-1 and Hoechst 33258 staining were investigated to evaluate the anti-inflammatory and anti-apoptotic impact effects of IPTS on HUVECs. Afterwards, the expression of microtubule-associated proteins light chain 3II (LC3II) and sequestosome 1 (p62) was determined to test the effect of IPTS on autophagy. Finally, by adding an autophagy inhibitor 3-methyladenine (3-MA), we investigated whether IPTS exerts anti-inflammatory and anti-apoptotic effects through the autophagy pathway. KEY FINDINGS We firstly demonstrated that pretreatment with IPTS could increase the cell viability, maintain the cell morphology and reduce TNF-α-induced inflammation and apoptosis of HUVECs. Moreover, IPTS pretreatment was proved to raise the expression of LC3II /LC3I while decreasing the expression of p62, which indicated that IPTS could activate HUVECs' autophagy. IPTS has been shown for the first time to exert anti-inflammatory and anti-apoptotic effects through autophagy and thereby resisting TNF-α-induced inflammatory injury of HUVECs. CONCLUSIONS This study preliminarily confirmed that IPTS ameliorated HUVECs' inflammation and apoptosis by increasing autophagy.
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Affiliation(s)
- Xuemei Yan
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.,Urumqi Hospital of Traditional Chinese Medicine, Urumqi 830000, China
| | - Xueying Shang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China.,Guangzhou Baiyunshan Chenliji Pharmaceutical Co., Guangzhou 510000, China
| | - Zhiqiang Feng
- Department of Pharmaceutical Analysis, College of Pharmacy, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Bingying Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yurong Wu
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yuan Zhou
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Yu Li
- School of Nursing, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Lei Zhang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
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Modeling ATP-mediated endothelial cell elongation on line patterns. Biomech Model Mechanobiol 2022; 21:1531-1548. [PMID: 35902488 PMCID: PMC9626447 DOI: 10.1007/s10237-022-01604-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 06/24/2022] [Indexed: 11/08/2022]
Abstract
Endothelial cell (EC) migration is crucial for a wide range of processes including vascular wound healing, tumor angiogenesis, and the development of viable endovascular implants. We have previously demonstrated that ECs cultured on 15-μm wide adhesive line patterns exhibit three distinct migration phenotypes: (a) “running” cells that are polarized and migrate continuously and persistently on the adhesive lines with possible spontaneous directional changes, (b) “undecided” cells that are highly elongated and exhibit periodic changes in the direction of their polarization while maintaining minimal net migration, and (c) “tumbling-like” cells that migrate persistently for a certain amount of time but then stop and round up for a few hours before spreading again and resuming migration. Importantly, the three migration patterns are associated with distinct profiles of cell length. Because of the impact of adenosine triphosphate (ATP) on cytoskeletal organization and cell polarization, we hypothesize that the observed differences in EC length among the three different migration phenotypes are driven by differences in intracellular ATP levels. In the present work, we develop a mathematical model that incorporates the interactions between cell length, cytoskeletal (F-actin) organization, and intracellular ATP concentration. An optimization procedure is used to obtain the model parameter values that best fit the experimental data on EC lengths. The results indicate that a minimalist model based on differences in intracellular ATP levels is capable of capturing the different cell length profiles observed experimentally.
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Hynes AM, Scantling DR, Murali S, Bormann BC, Paul JS, Reilly PM, Seamon MJ, Martin ND. What happens after they survive? The role of anticoagulants and antiplatelets in IVC injuries. Trauma Surg Acute Care Open 2022; 7:e000923. [PMID: 35813557 PMCID: PMC9214426 DOI: 10.1136/tsaco-2022-000923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 05/20/2022] [Indexed: 11/07/2022] Open
Abstract
Background Venous thromboembolism (VTE) after an inferior vena cava (IVC) injury is a devastating complication. Current practice involves variable use of anticoagulation and antiplatelet (AC/AP) agents. We hypothesized that AC/AP can reduce the incidence of VTE and that delayed institution of AC/AP is associated with increased VTE events. Methods We retrospectively reviewed IVC injuries cared for at a large urban adult academic level 1 trauma center between January 1, 2008 and December 31, 2020, surviving 72 hours. Patient demographics, injury mechanism, surgical repair, type and timing of AC, and type and timing of VTE events were characterized. Postoperative AC status during hospital course before an acute VTE event was delineated by grouping patients into four categories: full, prophylactic, prophylactic with concomitant AP, and none. The primary outcome was the incidence of an acute VTE event. IVC ligation was excluded from analysis. Results Of the 76 patients sustaining an IVC injury, 26 were included. The incidence of a new deep vein thrombosis distal to the IVC injury and a new pulmonary embolism was 31% and 15%, respectively. The median onset of VTE was 5 days (IQR 1–11). Four received full AC, 10 received prophylactic AC with concomitant AP, 8 received prophylactic AC, and 4 received no AC/AP. New VTE events occurred in 0.0% of full, in 30.0% of prophylactic with concomitant AP, in 50.0% of prophylactic, and in 50.0% without AC/AP. There was no difference in baseline demographics, injury mechanisms, surgical interventions, and bleeding complications. Discussion This is the first study to suggest that delay and degree of antithrombotic initiation in an IVC-injured patient may be associated with an increase in VTE events. Consideration of therapy initiation should be performed on hemostatic stabilization. Future studies are necessary to characterize the optimal dosing and temporal timing of these therapies. Level of evidence Therapeutic, level 3.
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Affiliation(s)
- Allyson M Hynes
- Emergency Medicine, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
- Surgery, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Dane R Scantling
- Surgery, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Shyam Murali
- Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | | - Jasmeet S Paul
- Surgery, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA
| | - Patrick M Reilly
- Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Mark J Seamon
- Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Niels D Martin
- Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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[Medical compression stockings for chronic venous diseases and lymphedema : Scientific evidence and results of a patient survey on quality of care]. Hautarzt 2022; 73:708-717. [PMID: 35648140 PMCID: PMC9427895 DOI: 10.1007/s00105-022-05007-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/27/2022] [Indexed: 11/25/2022]
Abstract
Hintergrund und Ziele Medizinische Kompressionsstrümpfe (MKS) sind bei chronischer venöser Insuffizienz (CVI) aller Stadien indiziert und beim Lymphödem eine unverzichtbare Therapiekomponente; 8 % der deutschen Bevölkerung tragen vom Arzt verordnete MKS, Frauen häufiger als Männer (12 % vs. 5 %) und insbesondere Personen ab 60 Jahren (17 %). Die Adhärenz der Patienten ist relevant für eine erfolgreiche Behandlung mit MKS. Untersucht wurde die Versorgung mit MKS aus Patientensicht. Patienten und Methodik Die vorliegende Studie untersuchte 2019 die Versorgungsqualität durch strukturierte Interviews mit 414 repräsentativ ausgewählten Nutzern. Die Erkenntnisse werden vor dem Hintergrund wissenschaftlicher Evidenz zur Wirkung der MKS diskutiert. Ergebnisse Venenprobleme sind der häufigste Verordnungsgrund (44 %), gefolgt von Lymphödemen (22 %) bzw. Mehrfachindikationen (27 %). Patienten tragen MKS zumeist täglich und durchschnittlich 11 h/Tag; 89 % der Patienten waren zufrieden bzw. sehr zufrieden mit den MKS und berichteten je nach Indikation ein differenziertes Wirkprofil. Dieses reflektiert die umfangreiche wissenschaftliche Evidenz zur klinischen Wirksamkeit der MKS. Ein wichtiger Faktor für die Patientenadhärenz ist die ärztliche Schulung und Aufklärung. Schlussfolgerungen MKS werden von Patienten sehr gut akzeptiert. Bei der Verordnung sollen praktischen Aspekte wie An- und Ausziehen, empfohlene Tragedauer und -häufigkeit sowie der Wirkmechanismus der MKS vermittelt werden. Graphic abstract ![]()
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Răzvan-Valentin S, Güler SA, Utkan T, Şahin TD, Gacar G, Yazir Y, Rencber SF, Mircea L, Cristian B, Bogdan P, Utkan NZ. Etanercept Prevents Endothelial Dysfunction in Cafeteria Diet-Fed Rats. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19042138. [PMID: 35206342 PMCID: PMC8872388 DOI: 10.3390/ijerph19042138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 02/06/2022] [Accepted: 02/08/2022] [Indexed: 01/27/2023]
Abstract
Obesity is associated with endothelial dysfunction and this relationship is probably mediated in part by inflammation. Objective: The current study evaluated the effects of etanercept, a tumor necrosis factor-alpha (TNF-α) inhibitor, on endothelial and vascular reactivity, endothelial nitric oxide synthase (eNOS) immunoreactivity, and serum and aortic concentrations of TNF-α in a diet-induced rat model. Design and results: Male weanling Wistar rats were exposed to a standard diet and cafeteria diet (CD) for 12 weeks and etanercept was administered during CD treatment. Isolated aortas of the rats were used for isometric tension recording. Carbachol-induced relaxant responses were impaired in CD-fed rats, while etanercept treatment improved these endothelium-dependent relaxations. No significant change was observed in papaverine- and sodium nitroprusside (SNP)-induced relaxant responses. eNOS expression decreased in CD-fed rats, but no change was observed between etanercept-treated CD-fed rats and control rats. CD significantly increased both the serum and the aortic levels of TNF-α, while etanercept treatment suppressed these elevated levels. CD resulted in a significant increase in the body weight of the rats. Etanercept-treated (ETA) CD-fed rats gained less weight than both CD-fed and control rats.
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Affiliation(s)
- Scăunaşu Răzvan-Valentin
- Department of General Surgery, Faculty of General Medicine, “Coltea” Hospital, Carol Davila University, 020021 Bucharest, Romania; (L.M.); (B.C.); (P.B.)
- Correspondence: (S.R.-V.); (S.A.G.)
| | - Sertaç Ata Güler
- Department of General Surgery, Medical Faculty, Kocaeli University, Kocaeli 41380, Turkey;
- Correspondence: (S.R.-V.); (S.A.G.)
| | - Tijen Utkan
- Department of Pharmacology, Medical Faculty, Kocaeli University, Kocaeli 41380, Turkey; (T.U.); (T.D.Ş.)
- Experimental Medical Research and Application Center, Kocaeli University, Kocaeli 41380, Turkey
| | - Tuğçe Demirtaş Şahin
- Department of Pharmacology, Medical Faculty, Kocaeli University, Kocaeli 41380, Turkey; (T.U.); (T.D.Ş.)
| | - Gulcin Gacar
- Stem Cell and Gene Therapy Research and Application Center, Kocaeli University, Kocaeli 41380, Turkey; (G.G.); (Y.Y.)
| | - Yusufhan Yazir
- Stem Cell and Gene Therapy Research and Application Center, Kocaeli University, Kocaeli 41380, Turkey; (G.G.); (Y.Y.)
- Department of Histology and Embryology, Medical Faculty, Kocaeli University, Kocaeli 41380, Turkey;
| | - Selenay Furat Rencber
- Department of Histology and Embryology, Medical Faculty, Kocaeli University, Kocaeli 41380, Turkey;
| | - Lupușoru Mircea
- Department of General Surgery, Faculty of General Medicine, “Coltea” Hospital, Carol Davila University, 020021 Bucharest, Romania; (L.M.); (B.C.); (P.B.)
| | - Bălălău Cristian
- Department of General Surgery, Faculty of General Medicine, “Coltea” Hospital, Carol Davila University, 020021 Bucharest, Romania; (L.M.); (B.C.); (P.B.)
| | - Popescu Bogdan
- Department of General Surgery, Faculty of General Medicine, “Coltea” Hospital, Carol Davila University, 020021 Bucharest, Romania; (L.M.); (B.C.); (P.B.)
| | - Nihat Zafer Utkan
- Department of General Surgery, Medical Faculty, Kocaeli University, Kocaeli 41380, Turkey;
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Park JS, Lee GH, Jin SW, Pham TH, Thai TN, Kim JY, Kim CY, Han EH, Hwang YP, Choi CY, Jeong HG. G protein-coupled estrogen receptor regulates the KLF2-dependent eNOS expression by activating of Ca 2+ and EGFR signaling pathway in human endothelial cells. Biochem Pharmacol 2021; 192:114721. [PMID: 34363795 DOI: 10.1016/j.bcp.2021.114721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 12/26/2022]
Abstract
G protein-coupled estrogen receptor (GPER) is important for maintaining normal blood vessel function by preventing endothelial cell dysfunction. It has been reported that G-1, an agonist of GPER, increases nitric oxide (NO) production through the phosphorylation of endothelial nitric oxide synthase (eNOS). However, the effect of GPER activation on eNOS expression has not been studied. Our results show that G-1 significantly increased the expression of eNOS and Kruppel-like factor 2 (KLF2) in human endothelial EA.hy926 cells. The individual silences of KLF2 and GPER attenuated G-1-induced eNOS expression. In addition, inhibition of the Gαq and Gβγ suppressed G-1-induced the expression of eNOS and KLF2 in EA.hy926 cells. Interestingly, these effects were similar in HUVECs. Furthermore, we found that GPER-mediated Ca2+ signaling increased the phosphorylation of CaMKKβ, AMPK, and CaMKIIα in the cells. The phosphorylation of histone deacetylase 5 (HDAC5) by activation of AMPK and CaMKIIα increased the expression of eNOS via transcriptional activity of KLF2. We further demonstrate that GPER activation increased the phosphorylation of Src, EGFR, ERK5, and MEF2C and consequently induced the expression of eNOS and KLF2. Meanwhile, inhibition of ERK5 and HDAC5 suppressed the expression of eNOS and KLF2 induced by G-1 in the cells. These findings suggest that GPER provides a novel mechanism for understanding the regulation of eNOS expression and is an essential therapeutic target in preventing cardiovascular-related endothelial dysfunction.
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Affiliation(s)
- Jin Song Park
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Gi Ho Lee
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Sun Woo Jin
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Thi Hoa Pham
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Tuyet Ngan Thai
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Ji Yeon Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Chae Yeon Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Eun Hee Han
- Drug & Disease Target Research Team, Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Cheongju 28119, Republic of Korea
| | - Yong Pil Hwang
- Fisheries Promotion Division, Mokpo City, Mokpo 58613, Republic of Korea
| | - Chul Yung Choi
- Department of Biomedical Science, College of Natural Science, Chosun University, Gwangju 61452, Republic of Korea
| | - Hye Gwang Jeong
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea.
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Kim DS, Vaquer S, Mazzolai L, Roberts LN, Pavela J, Watanabe M, Weerts G, Green DA. The effect of microgravity on the human venous system and blood coagulation: a systematic review. Exp Physiol 2021; 106:1149-1158. [PMID: 33704837 DOI: 10.1113/ep089409] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 03/01/2021] [Indexed: 12/19/2022]
Abstract
NEW FINDINGS What is the central question of this study? Recently, an internal jugular venous thrombus was identified during spaceflight: does microgravity induce venous and/or coagulation pathophysiology, and thus an increased risk of venous thromboembolism (VTE)? What is the main finding and its importance? Whilst data are limited, this systematic review suggests that microgravity and its analogues may induce an enhanced coagulation state due to venous changes most prominent in the cephalad venous system, as a consequence of changes in venous flow, distension, pressures, endothelial damage and possibly hypercoagulability in microgravity and its analogues. However, whether such changes precipitate an increased VTE risk in spaceflight remains to be determined. ABSTRACT Recently, an internal jugular venous thrombus was identified during spaceflight, but whether microgravity induces venous and/or coagulation pathophysiology, and thus, an increased risk of venous thromboembolism (VTE) is unclear. Therefore, a systematic (Cochrane compliant) review was performed of venous system or coagulation parameters in actual spaceflight (microgravity) or ground-based analogues in PubMed, MEDLINE, Ovid EMBASE, Cochrane Library, European Space Agency, National Aeronautics and Space Administration, and Deutsches Zentrum für Luft-und Raumfahrt databases. Seven-hundred and eight articles were retrieved, of which 26 were included for evaluation with 21 evaluating venous, and five coagulation parameters. Nine articles contained spaceflight data, whereas the rest reported ground-based analogue data. There is substantial variability in study design, objectives and outcomes. Yet, data suggested cephalad venous system dilatation, increased venous pressures and decreased/reversed flow in microgravity. Increased fibrinogen levels, presence of thrombin generation markers and endothelial damage were also reported. Limited human venous and coagulation system data exist in spaceflight, or its analogues. Nevertheless, data suggest spaceflight may induce an enhanced coagulation state in the cephalad venous system, as a consequence of changes in venous flow, distension, pressures, endothelial damage and possibly hypercoagulability. Whether such changes precipitate an increased VTE risk in spaceflight remains to be determined.
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Affiliation(s)
- David S Kim
- Space Medicine Team, European Astronaut Centre, European Space Agency (ESA), Cologne, Germany.,Department of Emergency Medicine, University of British Columbia, British Columbia, Vancouver, Canada
| | - Sergi Vaquer
- Space Medicine Team, European Astronaut Centre, European Space Agency (ESA), Cologne, Germany.,KBR, WyleLabs GmbH, Cologne, Germany
| | - Lucia Mazzolai
- Angiology division, Heart and Vessel Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - Lara N Roberts
- Department of Haematological Medicine, King's Thrombosis Centre, King's College Hospital NHS Foundation Trust, London, UK
| | - James Pavela
- Department of Preventive Medicine and Population Health, University of Texas Medical Branch, Galveston, TX, USA
| | | | - Guillaume Weerts
- Space Medicine Team, European Astronaut Centre, European Space Agency (ESA), Cologne, Germany
| | - David A Green
- Space Medicine Team, European Astronaut Centre, European Space Agency (ESA), Cologne, Germany.,KBR, WyleLabs GmbH, Cologne, Germany.,Centre of Human and Applied Physiological Sciences, King's College London, London, UK
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13
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Lee GH, Park JS, Jin SW, Pham TH, Thai TN, Kim JY, Kim CY, Choi JH, Han EH, Jeong HG. Betulinic Acid Induces eNOS Expression via the AMPK-Dependent KLF2 Signaling Pathway. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:14523-14530. [PMID: 33232606 DOI: 10.1021/acs.jafc.0c06250] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Betulinic acid (BA) is a natural pentacyclic triterpenoid with protective effects against inflammation, metabolic diseases, and cardiovascular diseases. We have previously shown that BA prevents endothelial dysfunction by increasing nitric oxide (NO) synthesis through activating endothelial nitric oxide synthase (eNOS) in human endothelial cells. However, the effect of BA on eNOS expression remains unclear. Thus, the aim of our study was to investigate the intracellular pathways associated with the effect of BA to regulate eNOS expression in human endothelial cells. BA significantly increased eNOS expression in a time- and concentration-dependent manner. Additionally, BA upregulated the expression of the transcription factor KLF2, which is known to regulate eNOS expression. KLF2 silencing in human endothelial cells attenuated the ability of BA to upregulate eNOS. BA also increased levels of intracellular Ca2+, activating CaMKKβ, CaMKIIα, and AMPK. Inhibition of the TRPC calcium channel abolished BA-mediated effects on intracellular Ca2+ levels. Moreover, BA increased the phosphorylation levels of ERK5, HDAC5, and MEF2C. Pretreatment of cells with compound C (AMPK inhibitor), LMK235 (HDAC5 inhibitor), and XMD8-92 (ERK5 inhibitor) attenuated the BA-induced eNOS expression. Collectively, these findings suggest that BA induces eNOS expression by activating the HDAC5/ERK5/KLF2 pathway in endothelial cells. The data presented here provide strong evidence supporting the use of BA to prevent endothelial dysfunction and treat vascular diseases, such as atherosclerosis.
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Affiliation(s)
- Gi Ho Lee
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jin Song Park
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Sun Woo Jin
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Thi Hoa Pham
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Tuyet Ngan Thai
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Ji Yeon Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Chae Yeon Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jae Ho Choi
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Eun Hee Han
- Drug & Disease Target Research Team, Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Cheongju 28119, Republic of Korea
| | - Hye Gwang Jeong
- College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
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Bai S, Wei Y, Hou W, Yao Y, Zhu J, Hu X, Chen W, Du Y, He W, Shen B, Du J. Orai-IGFBP3 signaling complex regulates high-glucose exposure-induced increased proliferation, permeability, and migration of human coronary artery endothelial cells. BMJ Open Diabetes Res Care 2020; 8:8/1/e001400. [PMID: 33087338 PMCID: PMC7580052 DOI: 10.1136/bmjdrc-2020-001400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 07/25/2020] [Accepted: 08/23/2020] [Indexed: 02/03/2023] Open
Abstract
INTRODUCTION Diabetes-associated endothelium dysfunction might be linked to disturbances in Ca2+ homeostasis. Our main objective is to reveal the potential mechanisms by which high-glucose (HG) exposure promotes increased proliferation of human coronary artery endothelial cells (HCAECs) in culture, and that store-operated Ca2+ entry (SOCE) and insulin-like growth factor binding protein 3 (IGFBP3) contribute to this proliferation. RESEARCH DESIGN AND METHODS We detected the expression levels of Ca2+ release-activated calcium channel proteins (Orais), IGFBP3 and proliferating cell nuclear antigen of HCAECs cultured in HG medium for 1, 3, 7, and 14 days and in streptozotocin-induced diabetic mouse coronary endothelial cells. Coimmunoprecipitation and immunofluorescence technologies were used to detect the interactions between Orais and IGFBP3 of HCAECs exposed to HG environment, and to detect IGFBP3 expression and proliferation after treatment of HCAECs cultured in HG medium with an agonist or inhibitor of SOCE. Similarly, after transfection of specific small interfering RNA to knock down IGFBP3 protein expression, SOCE activity and Orais expression were tested. Some processes related to endothelial dysfunction, such as migration, barrier function and adhesion marker expression, are also measured. RESULTS HG exposure promoted increased proliferation of HCAECs in culture and that SOCE and IGFBP3 contributed to this proliferation. In addition, we also found that Orais and IGFBP3 were physically associated and regulated each other's expression levels. Besides, their expression levels and interactions were enhanced in HCAECs after exposure to HG. HG exposure promotes cell migration, but reduces barrier function and adherens junction protein expression levels in HCAECs. CONCLUSION Orais and IGFBP3 formed a signaling complex that mediated HCAEC proliferation during HG exposure in culture. Meanwhile, we also found that SOCE stimulates proliferation of HCAECs by regulating IGFBP3, thereby promoting the occurrence and progression of coronary atherosclerosis in diabetes. It is worth noting that our findings may shed new light on the mechanisms of increased proliferation in HCAECs in diabetes and suggest the potential value of SOCE and IGFBP3 as therapeutic targets for coronary atherosclerosis in individuals with diabetes.
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Affiliation(s)
- Suwen Bai
- Longgang District People's Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong, Shenzhen, Guangdong, China
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Yuan Wei
- Longgang District People's Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong, Shenzhen, Guangdong, China
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Wenxuan Hou
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - YanHeng Yao
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Junwei Zhu
- Department of Otolaryngology, Head and Neck Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Xianyu Hu
- Department of General Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Wei Chen
- Department of General Surgery, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Yinan Du
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Wei He
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Bing Shen
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
| | - Juan Du
- Longgang District People's Hospital of Shenzhen & The Third Affiliated Hospital (Provisional) of The Chinese University of Hong Kong, Shenzhen, Guangdong, China
- School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui, China
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15
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Nikitin PV, Ryzhova MV, Galstyan SA, Kim DS, Zubova IV, Khokhlova EA, Shugay SV. Identification of different cell clusters in the endothelium of atherosclerotic vessels and determination of inter-cluster gradient of proliferative and inflammatory activity as new diagnostic markers. Biotech Histochem 2020; 96:487-497. [PMID: 32938242 DOI: 10.1080/10520295.2020.1823016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
To characterize atherogenesis functionally, we studied the functional heterogeneity of endotheliocytes in carotid vessels with atherosclerotic plaques and identified several distinct cell clusters. We measured the Ki-67 labeling index (Ki-67 LI), percentage of Bcl-2 cells (CP) and expression of CCL5, IL 6 and VCAM1 in each cell cluster. We also investigated how these indicators change when the plaque becomes unstable and how they affect the risk of adverse cerebrovascular events in patients. We evaluated the inter-cluster gradient of marker activity and its relation to patient prognosis. We identified five endothelial clusters: the under plaque cluster (UPC), peripheral cluster (PC), marginal cluster (MC), transient cluster (TC) and outside plaque cluster (OC). The UPC exhibited the greatest proliferative, proinflammatory and adhesive activity, but low anti-apoptotic activity. The PC exhibited the second greatest proliferative, adhesive and proinflammatory activity. Progression of atherosclerosis and transition of a stable atherosclerotic plaque to an unstable one was accompanied by increased expression of nearly all markers. The proliferative activity in the UPC, PC and OC, and the pro-inflammatory activity in UPC and anti-apoptotic activity in the PC, were correlated with prognosis. Also, two gradients of proliferative activity and a gradient of pro-inflammatory activity were associated with risk of adverse events.
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Affiliation(s)
- P V Nikitin
- P.K. Anokhin Institute of Normal Physiology, Moscow, Russian Federation
| | - M V Ryzhova
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - S A Galstyan
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - D S Kim
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - I V Zubova
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - E A Khokhlova
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
| | - S V Shugay
- N. N. Burdenko National Medical Research Center of Neurosurgery, Moscow, Russian Federation
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16
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Yang C, Eleftheriadou M, Kelaini S, Morrison T, González MV, Caines R, Edwards N, Yacoub A, Edgar K, Moez A, Ivetic A, Zampetaki A, Zeng L, Wilkinson FL, Lois N, Stitt AW, Grieve DJ, Margariti A. Targeting QKI-7 in vivo restores endothelial cell function in diabetes. Nat Commun 2020; 11:3812. [PMID: 32732889 PMCID: PMC7393072 DOI: 10.1038/s41467-020-17468-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 07/02/2020] [Indexed: 11/24/2022] Open
Abstract
Vascular endothelial cell (EC) dysfunction plays a key role in diabetic complications. This study discovers significant upregulation of Quaking-7 (QKI-7) in iPS cell-derived ECs when exposed to hyperglycemia, and in human iPS-ECs from diabetic patients. QKI-7 is also highly expressed in human coronary arterial ECs from diabetic donors, and on blood vessels from diabetic critical limb ischemia patients undergoing a lower-limb amputation. QKI-7 expression is tightly controlled by RNA splicing factors CUG-BP and hnRNPM through direct binding. QKI-7 upregulation is correlated with disrupted cell barrier, compromised angiogenesis and enhanced monocyte adhesion. RNA immunoprecipitation (RIP) and mRNA-decay assays reveal that QKI-7 binds and promotes mRNA degradation of downstream targets CD144, Neuroligin 1 (NLGN1), and TNF-α-stimulated gene/protein 6 (TSG-6). When hindlimb ischemia is induced in diabetic mice and QKI-7 is knocked-down in vivo in ECs, reperfusion and blood flow recovery are markedly promoted. Manipulation of QKI-7 represents a promising strategy for the treatment of diabetic vascular complications.
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Affiliation(s)
- Chunbo Yang
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | | | - Sophia Kelaini
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - Thomas Morrison
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - Marta Vilà González
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - Rachel Caines
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - Nicola Edwards
- Centre for Bioscience in the Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, M15GD, UK
| | - Andrew Yacoub
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - Kevin Edgar
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - Arya Moez
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - Aleksandar Ivetic
- School of Cardiovascular Medicine and Sciences, BHF Centre of Research Excellence, King's College London, The James Black Centre, 125 Coldharbour Lane, London, SE5 9NU, UK
| | - Anna Zampetaki
- School of Cardiovascular Medicine and Sciences, BHF Centre of Research Excellence, King's College London, The James Black Centre, 125 Coldharbour Lane, London, SE5 9NU, UK
| | - Lingfang Zeng
- School of Cardiovascular Medicine and Sciences, BHF Centre of Research Excellence, King's College London, The James Black Centre, 125 Coldharbour Lane, London, SE5 9NU, UK
| | - Fiona L Wilkinson
- Centre for Bioscience in the Department of Life Sciences, Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, M15GD, UK
| | - Noemi Lois
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - Alan W Stitt
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - David J Grieve
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK
| | - Andriana Margariti
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, BT9 7BL, UK.
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17
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Deol ZK, Lakhanpal S, Franzon G, Pappas PJ. Effect of obesity on chronic venous insufficiency treatment outcomes. J Vasc Surg Venous Lymphat Disord 2020; 8:617-628.e1. [PMID: 32335333 DOI: 10.1016/j.jvsv.2020.04.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 04/02/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND Obesity is a known risk factor for the development and progression of chronic venous disorders (CVDs). It is currently unknown whether the treatment outcomes, after an intervention for CVDs, are affected by obesity. The purpose of the present investigation was to assess the effectiveness of various CVD treatments in obese patients and determine what level of obesity is associated with poor outcomes. METHODS Data were prospectively collected in the Center for Vein Restoration electronic medical record system (NexGen Healthcare Information System, Irvine, Calif) and retrospectively analyzed. The patients and limbs were categorized by the following body mass index (BMI) categories: <25, 26 to 30, 31 to 35, 36 to 40, 41 to 45, and >46 kg/m2. The changes in the revised venous clinical severity score and Chronic Venous Insufficiency Quality of Life Questionnaire 20-item (CIVIQ-20) quality of life survey were used to determine the CVD treatment effectiveness for patients who had undergone endovenous thermal ablation (TA), phlebectomy, or ultrasound-guided foam sclerotherapy (USGFS). RESULTS From January 2015 to December 2017, 65,329 patients (77% female; 23% male) had undergone a venous procedure. Of these patients, 25,592 (39,919 limbs) had undergone ablation alone, ablation with phlebectomy, or ablation with phlebectomy and USGFS. The number of procedures performed was as follows: TA, n = 37,781; USGFS, n = 22,964; and phlebectomy, n = 17,467. The degree of improvement at 6 months after the procedure was progressively less with an increasing BMI for the patients who had undergone TA, and the decrease was more significant for those patients with a BMI >35 kg/m2 (P ≤ .001). The outcomes improved ∼12% with the addition of phlebectomy to TA. The patients who had undergone a combination of TA, phlebectomy, and USGFS demonstrated no additional improvement. Significantly inferior outcomes were noted in patients with a BMI ≥35 kg/m2, with the poorest outcomes observed in patients with a BMI ≥46 kg/m2 (P ≤ .001). The average number of TAs per patient increased with an increasing BMI and was significantly different compared with the number for those with a BMI <30 kg/m2 (P ≤ .001). All pre- and post-CIVIQ-20 quality of life scores, within a BMI category, at 6 months were significantly different (P ≤ .01). No differences in the degree of improvement were observed in patients with a BMI ≥31 kg/m2. Finally, multivariate logistic regression analysis indicated that when controlling for BMI, diabetes, a history of cancer, female gender, and black and Hispanic race were independently associated with poorer outcomes. CONCLUSIONS Progressive increases in BMI negatively affected CVD-related treatment outcomes as measured using the revised venous clinical severity score and CIVIQ-20. The outcomes progressively worsened with a BMI >35 kg/m2 for patients undergoing CVD treatment. The treatment outcomes for patients with a BMI ≥46 kg/m2 were so poor that weight loss management should be considered before offering CVD treatment.
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Affiliation(s)
- Zoe K Deol
- Center for Vein Restoration, Greenbelt, Md.
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18
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Coronary Artery Disease: From Mechanism to Clinical Practice. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1177:1-36. [PMID: 32246442 DOI: 10.1007/978-981-15-2517-9_1] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
In most developed countries, coronary artery disease (CAD), mostly caused by atherosclerosis of coronary arteries, is one of the primary causes of death. From 1990s to 2000s, mortality caused by acute MI declined up to 50%. The incidence of CAD is related with age, gender, economic, etc. Atherosclerosis contains some highly correlative processes such as lipid disturbances, thrombosis, inflammation, vascular smooth cell activation, remodeling, platelet activation, endothelial dysfunction, oxidative stress, altered matrix metabolism, and genetic factors. Risk factors of CAD exist among many individuals of the general population, which includes hypertension, lipids and lipoproteins metabolism disturbances, diabetes mellitus, chronic kidney disease, age, genders, lifestyle, cigarette smoking, diet, obesity, and family history. Angina pectoris is caused by myocardial ischemia in the main expression of pain in the chest or adjoining area, which is usually a result of exertion and related to myocardial function disorder. Typical angina pectoris would last for minutes with gradual exacerbation. Rest, sit, or stop walking are the usual preference for patients with angina, and reaching the maximum intensity in seconds is uncommon. Rest or nitroglycerin usage can relieve typical angina pectoris within minutes. So far, a widely accepted angina pectoris severity grading system included CCS (Canadian Cardiovascular Society) classification, Califf score, and Goldman scale. Patients with ST-segment elevated myocardial infarction (STEMI) may have different symptoms and signs of both severe angina pectoris and various complications. The combination of rising usage of sensitive MI biomarkers and precise imaging techniques, including electrocardiograph (ECG), computed tomography, and cardiac magnetic resonance imaging, made the new MI criteria necessary. Complications of acute myocardial infarction include left ventricular dysfunction, cardiogenic shock, structural complications, arrhythmia, recurrent chest discomfort, recurrent ischemia and infarction, pericardial effusion, pericarditis, post-myocardial infarction syndrome, venous thrombosis pulmonary embolism, left ventricular aneurysm, left ventricular thrombus, and arterial embolism.
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19
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Ji Q, Wang YL, Xia LM, Yang Y, Wang CS, Mei YQ. High shear stress suppresses proliferation and migration but promotes apoptosis of endothelial cells co-cultured with vascular smooth muscle cells via down-regulating MAPK pathway. J Cardiothorac Surg 2019; 14:216. [PMID: 31831023 PMCID: PMC6909635 DOI: 10.1186/s13019-019-1025-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 11/18/2019] [Indexed: 11/24/2022] Open
Abstract
Background Early neointimal hyperplasia of vein graft may be ameliorated via enhancing intravenous surface shear stress. Cellular processes including proliferation, apoptosis and migration of endothelial cells (ECs) and vascular smooth muscle cells (VSMCs) may play very important roles in the process of neointimal hyperplasia of vein graft; and mitogen-activated protein kinase (MAPK) pathways including extracellular signal-regulated kinase (ERK1/2) and p38 pathways play vital roles in regulating a large variety of cellular processes. This study evaluated the impacts of shear stress and MAPK pathways on cellular processes of ECs in a co-culture system with VSMCs, and aimed to test the hypothesis that high shear stress suppresses proliferation and migration but promotes apoptosis of ECs co-cultured with VSMCs via down-regulating MAPK pathway. Methods Primary ECs and VSMCs derived from porcine great saphenous vein were collected, respectively. 4–7 generation of cells were used as work cells. ECs and VSMCs were co-cultured and synchronized under high and low shear stress using Parallel-Plate Flow Chamber system. And then, ECs co-cultured with VSMCs were incubated with U0126 (ERK1/2 inhibitor) or PD98059 (p38 inhibitor) under different shear stress. Proliferation, apoptosis and migration of ECs in a co-culture system with VSMCs were detected by 4,5-dimethyl-2-thiazolyl (MTT) assay and bromodeoxyuridine (BrdU) assay, fluorescent-activated cell sorting (FACS) technique, and Transwell assay separately. Each test repeated 3 times. Additionally, protein expressions of ERK1/2 and p38 MAPK were detected by using Western blot, respectively. Results Under higher level of shear stress condition, proliferation and migration of ECs co-cultured with VSMCs were suppressed, while cell apoptosis was promoted. And blocking ERK1/2 pathway by U0126 or blocking p38 pathway by PD98059, proliferation and migration of ECs co-cultured with VSMCs were further suppressed, while cell apoptosis was further promoted. Additionally, protein expressions of phosphorylation of ERK1/2 and p38MAPK were decreased under higher level of shear stress condition, and were further reduced by blocking ERK1/2 or p38 pathway under shear stress condition. Conclusions High shear stress may suppress proliferation and apoptosis of ECs in a co-culture system with VSMCs but promote cell migration via down-regulating ERK1/2 and p38 MAPK pathways.
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Affiliation(s)
- Qiang Ji
- Department of Cardiovascular Surgery of Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Yu Lin Wang
- Department of Cardiovascular Surgery of Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Li Min Xia
- Shanghai Institute of Cardiovascular Diseases, 1609 Xietu Rd, Shanghai, 200032, China
| | - Ye Yang
- Department of Cardiovascular Surgery of Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, 200032, China
| | - Chun Sheng Wang
- Shanghai Institute of Cardiovascular Diseases, 1609 Xietu Rd, Shanghai, 200032, China.
| | - Yun Qing Mei
- Department of Cardiothoracic surgery, Tongji Hospital of Tongji University, 389 Xincun Road, Shanghai, 200065, China.
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20
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Natale CF, Lafaurie-Janvore J, Ventre M, Babataheri A, Barakat AI. Focal adhesion clustering drives endothelial cell morphology on patterned surfaces. J R Soc Interface 2019; 16:20190263. [PMID: 31480922 DOI: 10.1098/rsif.2019.0263] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
In many cell types, shape and function are intertwined. In vivo, vascular endothelial cells (ECs) are typically elongated and aligned in the direction of blood flow; however, near branches and bifurcations where atherosclerosis develops, ECs are often cuboidal and have no preferred orientation. Thus, understanding the factors that regulate EC shape and alignment is important. In vitro, EC morphology and orientation are exquisitely sensitive to the composition and topography of the substrate on which the cells are cultured; however, the underlying mechanisms remain poorly understood. Different strategies of substrate patterning for regulating EC shape and orientation have been reported including adhesive motifs on planar surfaces and micro- or nano-scale gratings that provide substrate topography. Here, we explore how ECs perceive planar bio-adhesive versus microgrooved topographic surfaces having identical feature dimensions. We show that while the two types of patterned surfaces are equally effective in guiding and directing EC orientation, the cells are considerably more elongated on the planar patterned surfaces than on the microgrooved surfaces. We also demonstrate that the key factor that regulates cellular morphology is focal adhesion clustering which subsequently drives cytoskeletal organization. The present results promise to inform design strategies of novel surfaces for the improved performance of implantable cardiovascular devices.
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Affiliation(s)
- C F Natale
- Hydrodynamics Laboratory, Ecole Polytechnique, CNRS UMR7646, Palaiseau, France.,Interdisciplinary Research Centre on Biomedical Materials (CRIB), University of Naples Federico II, Naples 80125, Italy
| | - J Lafaurie-Janvore
- Hydrodynamics Laboratory, Ecole Polytechnique, CNRS UMR7646, Palaiseau, France
| | - M Ventre
- Interdisciplinary Research Centre on Biomedical Materials (CRIB), University of Naples Federico II, Naples 80125, Italy.,Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, Italy
| | - A Babataheri
- Hydrodynamics Laboratory, Ecole Polytechnique, CNRS UMR7646, Palaiseau, France
| | - A I Barakat
- Hydrodynamics Laboratory, Ecole Polytechnique, CNRS UMR7646, Palaiseau, France.,School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, Australia
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Teragawa H, Oshita C, Ueda T. The Myocardial Bridge: Potential Influences on the Coronary Artery Vasculature. CLINICAL MEDICINE INSIGHTS-CARDIOLOGY 2019; 13:1179546819846493. [PMID: 31068756 PMCID: PMC6495429 DOI: 10.1177/1179546819846493] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Accepted: 04/03/2019] [Indexed: 12/18/2022]
Abstract
A myocardial bridge (MB) is an anatomical abnormality of the coronary artery and is characterized by the systolic narrowing of the epicardial coronary artery caused by myocardial compression during systole. An MB is frequently observed on cardiac computed tomography or coronary angiography and generally appears to be harmless in the majority of patients. However, the presence of MB is reportedly associated with abnormalities of the cardiovascular system, including coronary artery diseases, arrhythmia, certain types of cardiomyopathy, and cardiac death, indicating that MB serves a pivotal role in the occurrence and/or development of such cardiovascular events. Recently, there has been an increasing interest in the coexistence of MB and coronary spasm in research due to opposing aspects regarding their treatments. For example, monotherapy using β-blockers, which are effective in patients with MB, may worsen symptoms in patients with coronary spasm. By contrast, nitroglycerin, which is an effective treatment option for coronary spasm, may worsen symptoms in patients with MB. This review focuses on the pathophysiology and diagnosis of MB and MB-related cardiovascular diseases, including coronary spasm, and on the treatment strategies for MB.
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Affiliation(s)
- Hiroki Teragawa
- Department of Cardiovascular Medicine, JR Hiroshima Hospital, Hiroshima, Japan
| | - Chikage Oshita
- Department of Cardiovascular Medicine, JR Hiroshima Hospital, Hiroshima, Japan
| | - Tomohiro Ueda
- Department of Cardiovascular Medicine, JR Hiroshima Hospital, Hiroshima, Japan
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Peptides from Cauliflower By-Products, Obtained by an Efficient, Ecosustainable, and Semi-Industrial Method, Exert Protective Effects on Endothelial Function. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:1046504. [PMID: 30881586 PMCID: PMC6381550 DOI: 10.1155/2019/1046504] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 11/04/2018] [Accepted: 11/12/2018] [Indexed: 12/19/2022]
Abstract
The large amount of cauliflower industry waste represents an unexplored source of bioactive compounds. In this work, peptide hydrolysates from cauliflower leaves were characterized by combined bioanalytical approaches. Twelve peptide fractions were studied to evaluate unexplored biological activities by effect-based cellular bioassays. A potent inhibition of intracellular xanthine oxidase activity was observed in human vascular endothelial cells treated with one fraction, with an IC50 = 8.3 ± 0.6 μg/ml. A different fraction significantly induced the antioxidant enzyme superoxide dismutase 1 and decreased the tumor necrosis factor α-induced VCAM-1 expression, thus leading to a significant improvement in the viability of human vascular endothelial cells. Shotgun peptidomics and bioinformatics were used to retrieve the most probable bioactive peptide sequences. Our study shows that peptides from cauliflower waste should be recycled for producing valuable products useful for the prevention of endothelial dysfunction linked to atherogenesis progression.
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Zhu X, Liu Y, Yu J, Du J, Guo R, Feng Y, Zhong G, Jiang Y, Lin J. LncRNA HOXA-AS2 represses endothelium inflammation by regulating the activity of NF-κB signaling. Atherosclerosis 2019; 281:38-46. [DOI: 10.1016/j.atherosclerosis.2018.12.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 12/06/2018] [Accepted: 12/14/2018] [Indexed: 12/14/2022]
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Hatoum H, Dollery J, Lilly SM, Crestanello JA, Dasi LP. Sinus Hemodynamics Variation with Tilted Transcatheter Aortic Valve Deployments. Ann Biomed Eng 2019; 47:75-84. [PMID: 30151733 PMCID: PMC6376402 DOI: 10.1007/s10439-018-02120-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 08/17/2018] [Indexed: 12/18/2022]
Abstract
Leaflet thrombosis is a complication associated with transcatheter aortic valve (TAV) replacement (TAVR) correlated with sinus flow stasis. Sinus hemodynamics are important because they dictate shear stress and washout necessary to avoid stasis on TAV leaflets. Sinus flow is controlled by TAV axial deployment position but little is known regarding TAV axis misalignment effect. This study aims to elucidate TAV angular misalignment with respect to aortic root axis effect on sinus flow stasis potentially leading to leaflet thrombosis. Sinus hemodynamics were assessed in vitro using particle-image velocimetry in three different angular misalignments with respect to aorta axis: untilted, tilted away from the sinus and tilted towards sinus. A 26 mm Edwards SAPIEN3 was implanted in a 3D printed model of an anatomically realistic aortic root. TAV hemodynamics, sinus vortex tracking, leaflet shear stress probability density functions, and sinus blood time to washout were calculated. While pressure gradients differed insignificantly, blood velocity and vorticity decreased significantly in both tilted cases sinuses. Shear stress probability near the leaflet decreases with tilt indicating stasis. TAV tilted away from the sinus is the most unfavorable scenario with poor washout. TAV axial misalignment adds to factors list that could influence leaflet thrombosis risk through modifying sinus hemodynamics and washout.
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Affiliation(s)
- Hoda Hatoum
- Department of Biomedical Engineering, The Ohio State University, 473 W 12th Ave., Columbus, OH, 43210, USA
| | - Jennifer Dollery
- Division of Cardiac Surgery, The Ohio State University, Columbus, OH, USA
| | - Scott M Lilly
- Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, USA
| | - Juan A Crestanello
- Division of Cardiac Surgery, The Ohio State University, Columbus, OH, USA
| | - Lakshmi Prasad Dasi
- Department of Biomedical Engineering, The Ohio State University, 473 W 12th Ave., Columbus, OH, 43210, USA.
- Division of Cardiac Surgery, The Ohio State University, Columbus, OH, USA.
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Zhu X, Du J, Yu J, Guo R, Feng Y, Qiao L, Xu Z, Yang F, Zhong G, Liu F, Cheng F, Chu M, Lin J. LncRNA NKILA regulates endothelium inflammation by controlling a NF-κB/KLF4 positive feedback loop. J Mol Cell Cardiol 2019; 126:60-69. [DOI: 10.1016/j.yjmcc.2018.11.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Revised: 09/22/2018] [Accepted: 11/01/2018] [Indexed: 12/23/2022]
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Activation of CD137 Signaling Enhances Vascular Calcification through c-Jun N-Terminal Kinase-Dependent Disruption of Autophagic Flux. Mediators Inflamm 2018; 2018:8407137. [PMID: 30356425 PMCID: PMC6178178 DOI: 10.1155/2018/8407137] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 06/25/2018] [Accepted: 07/16/2018] [Indexed: 01/17/2023] Open
Abstract
Background Vascular calcification is widespread and clinically significant, contributing to substantial morbidity and mortality. Calcifying vascular cells are partly derived from local vascular smooth muscle cells (VSMCs), which can undergo chondrogenic or osteogenic differentiation under inflammatory environment. Recently, we have found activation of CD137 signaling accelerated vascular calcification. However, the underlying mechanism remains unknown. This study aims to identify key mediators involved in CD137 signaling-induced vascular calcification in vivo and in vitro. Methods Autophagy flux was measured through mRFP-GFP-LC3 adenovirus and transmission electron microscopy. Von Kossa assay and alkaline phosphatase (ALP) activity were used to observe calcification in vivo and in vitro, respectively. Autophagosome-containing vesicles were collected and identified by flow cytometry and Western blot. Autophagy or calcification-associated targets were measured by Western blot, quantitative real-time PCR, and immunohistochemistry. Results Treatment with the agonist-CD137 displayed c-Jun N-terminal kinase- (JNK-) dependent increase in the expression of various markers of autophagy and the number of autophagosomes relative to the control group. Autophagy flux experiments suggested that agonist-CD137 blocked the fusion of autophagosomes with lysosomes in cultured VSMCs. Calcium deposition, ALP activity, and the expression of calcification-associated proteins also increased in agonist-CD137 group compared with anti-CD137 group, which could be recovered by autophagy stimulator rapamycin. Autophagosome-containing vesicles collected from agonist-CD137 VSMCs supernatant promoted VSMC calcification. Conclusion The present study identified a new pathway in which CD137 promotes VSMC calcification through the activation of JNK signaling, subsequently leading to the disruption of autophagic flux, which is responsible for CD137-induced acceleration of vascular calcification.
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Sinus Hemodynamics in Representative Stenotic Native Bicuspid and Tricuspid Aortic Valves: An In-Vitro Study. FLUIDS 2018. [DOI: 10.3390/fluids3030056] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
(1) The study’s objective is to assess sinus hemodynamics differences between stenotic native bicuspid aortic valve (BAV) and native tricuspid aortic valve (TrAV) sinuses in order to assess sinus flow shear and vorticity dynamics in these common pathological states of the aortic valve. (2) Representative patient-specific aortic roots with BAV and TrAV were selected, segmented, and 3D printed. The flow dynamics within the sinus were assessed in-vitro using particle image velocimetry in a left heart simulator at physiological pressure and flow conditions. Hemodynamic data calculations, vortex tracking, shear stress probability density functions and sinus washout calculations based on Lagrangian particle tracking were performed. (3) (a) At peak systole, velocity and vorticity in BAV reach 0.67 ± 0.02 m/s and 374 ± 5 s−1 versus 0.49 ± 0.03 m/s and 293 ± 3 s−1 in TrAV; (b) Aortic sinus vortex is slower to form but conserved in BAV sinus; (c) BAV shear stresses exceed those of TrAV (1.05 Pa versus 0.8 Pa); (d) Complete TrAV washout was achieved after 1.5 cycles while it was not for BAV. 4) In conclusion, sinus hemodynamics dependence on the different native aortic valve types and sinus morphologies was clearly highlighted in this study.
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Hatoum H, Dollery J, Lilly SM, Crestanello J, Dasi LP. Impact of patient-specific morphologies on sinus flow stasis in transcatheter aortic valve replacement: An in vitro study. J Thorac Cardiovasc Surg 2018; 157:540-549. [PMID: 29980299 DOI: 10.1016/j.jtcvs.2018.05.086] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 05/08/2018] [Accepted: 05/09/2018] [Indexed: 10/14/2022]
Abstract
OBJECTIVE The goal of this study is to evaluate how sinus flow patterns after transcatheter aortic valve replacement in realistic representative patient roots vary. Sinus flow can affect transcatheter aortic valve operation and likely leaflet thrombosis occurrence due to stasis and poor washout. How the interaction between transcatheter aortic valve and representative patient aortic roots affects sinus hemodynamics is important to establish for future individualization of transcatheter aortic valve replacement therapy. METHODS Two representative patient aortic roots were selected, segmented and 3-dimensional printed followed by deployment of Medtronic CoreValve (Medtronic Inc, Irvine, Calif) and Edwards SAPIEN (Edwards Lifesciences, Irvine Calif) transcatheter aortic valves. Sinus hemodynamics were assessed in vitro using high spatio-temporal resolution particle-image-velocimetry. Detailed sinus vortex tracking, shear stress probability density functions, and sinus washout were evaluated and assessed as a function of valve type and representative patient morphology as independent case studies. RESULTS Peak velocity in the sinus with SAPIEN valve was approximately 3 times higher than with CoreValve for both models (0.30 ± 0.02 m/s and 0.34 ± 0.041 m/s vs 0.13 ± 0.01 m/s and 0.10 ± 0.02 m/s) (P < .01). Between representative patient models, vorticity magnitudes were significantly different (75 ± 1.1 s-1, 77 ± 3.2 s-1, 109 ± 2.3 s-1, and 250 ± 4.1 s-1) (P < .01) regardless of valve type. Sinus blood washout characteristic as a function of cardiac cycles was strongly both patient related and valve specific. Fluid dynamics favored shear stresses and washout characteristics due to a smaller sinus and sinotubular junction, further amplified by the SAPIEN valve. CONCLUSIONS Sinus flow dynamics are highly sensitive to aortic root characteristics and transcatheter aortic valve aortic root interaction. Differences in sinus-flow washout and stasis regions between representative patient models may be reflected in different risks of leaflet thrombosis or valve degeneration.
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Affiliation(s)
- Hoda Hatoum
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio
| | - Jennifer Dollery
- Division of Cardiac Surgery, Department of Surgery, The Ohio State University, Columbus, Ohio
| | - Scott M Lilly
- Division of Cardiovascular Medicine, Department of Internal Medicine, The Ohio State University, Columbus, Ohio
| | - Juan Crestanello
- Division of Cardiac Surgery, Department of Surgery, The Ohio State University, Columbus, Ohio
| | - Lakshmi Prasad Dasi
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio; Division of Cardiac Surgery, Department of Surgery, The Ohio State University, Columbus, Ohio.
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Mansilha A, Sousa J. Pathophysiological Mechanisms of Chronic Venous Disease and Implications for Venoactive Drug Therapy. Int J Mol Sci 2018; 19:ijms19061669. [PMID: 29874834 PMCID: PMC6032391 DOI: 10.3390/ijms19061669] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 11/16/2022] Open
Abstract
Chronic venous disease (CVD) is a common pathology, with significant physical and psychological impacts for patients and high economic costs for national healthcare systems. Throughout the last decades, several risk factors for this condition have been identified, but only recently, have the roles of inflammation and endothelial dysfunction been properly assessed. Although still incompletely understood, current knowledge of the pathophysiological mechanisms of CVD reveals several potential targets and strategies for therapeutic intervention, some of which are addressable by currently available venoactive drugs. The roles of these drugs in the clinical improvement of venous tone and contractility, reduction of edema and inflammation, as well as in improved microcirculation and venous ulcer healing have been studied extensively, with favorable results reported in the literature. Here, we aim to review these pathophysiological mechanisms and their implications regarding currently available venoactive drug therapies.
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Affiliation(s)
- Armando Mansilha
- Departamento de Cirurgia e Fisiologia, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal.
- Departamento de Angiologia e Cirurgia Vascular, Hospital CUF Porto, 4100-180 Porto, Portugal.
| | - Joel Sousa
- Departamento de Cirurgia e Fisiologia, Faculdade de Medicina da Universidade do Porto, 4200-319 Porto, Portugal.
- Departamento de Angiologia e Cirurgia Vascular, Hospital CUF Porto, 4100-180 Porto, Portugal.
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Zhao Y, Li N, Li Z, Zhang D, Chen L, Yao Z, Niu W. Conditioned medium from contracting skeletal muscle cells reverses insulin resistance and dysfunction of endothelial cells. Metabolism 2018; 82:36-46. [PMID: 29289515 DOI: 10.1016/j.metabol.2017.12.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 12/07/2017] [Accepted: 12/23/2017] [Indexed: 01/10/2023]
Abstract
OBJECTIVE Obese adipose tissue has been characterized with chronic inflammation associated with elevated secretion of inflammatory cytokines and declined secretion of anti-inflammatory cytokines which can impair endothelial function in an endocrine manner. Adipose tissue hypoxia plays a role in the changes of cytokines. Physical exercise/muscle contraction may help preventing cardiovascular disease through improving insulin resistance and endothelium function. However the mechanism is unclear. Skeletal muscle is an endocrine tissue. Contracting muscles secrete myokines which may play roles in the beneficial effect of exercise. In this study, the conditioned medium from electrical pulse stimulation (EPS) regulated skeletal muscle cells was used to explore the mechanism of contraction on endothelial dysfunction and insulin resistance induced by conditioned medium from hypoxic adipocytes. METHODS 3T3-L1 adipocytes were incubated under normoxia or hypoxia condition, respectively. The supernatant was collected as adipocyte conditioned medium (CM-N and CM-H). C2C12 mouse skeletal muscle cells were stimulated with EPS for 12 h. The supernatant was collected as muscle cells conditioned medium (CM-EPS). Human umbilical vein endothelial cells (HUVECs) were incubated with adipocyte CM and muscle cells CM together. Macrophages migration to HUVECs was detected with transwell system. The mRNA expressions of E-selectin, ICAM-1, MCP-1 and IL-6 were measured by real-time PCR. The phosphorylation of IKKα/β, NF-κB, Akt, AMPK, eNOS and SOCS3 protein levels were detected by Western blot. Concentration of NO was measured by ELISA kit. HUVECs apoptosis was detected by flow cytometry. RESULTS CM-EPS reduced the increase of mRNA expressions of E-selectin, ICAM-1, MCP-1 and IL-6 in HUVECs induced by CN-H. The phosphorylations of IKKα/β and NF-κB, SOCS3 protein level and endothelial cells apoptosis, which were raised by CM-H, were significantly reduced by CM-EPS. CM-EPS reversed the effects of CM-H on Akt and eNOS phosphorylations and NO production in HUVECs. CM-EPS directly stimulated the phosphorylation of AMPK, which caused the following phosphorylation of eNOS in HUVECs. CONCLUSION In summary, CM-EPS reversed endothelial cells inflammation, apoptosis, insulin resistance and dysfunction induced by CM-H.
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Affiliation(s)
- Yihe Zhao
- Department of Immunology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital, Tianjin Medical University, Tianjin 300070, China
| | - Nana Li
- Department of Immunology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital, Tianjin Medical University, Tianjin 300070, China
| | - Zhu Li
- Department of Immunology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital, Tianjin Medical University, Tianjin 300070, China
| | - Da Zhang
- Department of Ultrasound, Tianjin Hospital, Tianjin 300211, China
| | - Liming Chen
- Department of Immunology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital, Tianjin Medical University, Tianjin 300070, China
| | - Zhi Yao
- Department of Immunology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital, Tianjin Medical University, Tianjin 300070, China
| | - Wenyan Niu
- Department of Immunology, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Metabolic Diseases, Tianjin Metabolic Diseases Hospital, Tianjin Medical University, Tianjin 300070, China.
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Cell Type-Specific Mechanisms in the Pathogenesis of Ischemic Stroke: The Role of Apoptosis Signal-Regulating Kinase 1. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:2596043. [PMID: 29743976 PMCID: PMC5883936 DOI: 10.1155/2018/2596043] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 02/10/2018] [Accepted: 02/22/2018] [Indexed: 12/19/2022]
Abstract
Stroke has become a more common disease worldwide. Despite great efforts to develop treatment, little is known about ischemic stroke. Cerebral ischemia activates multiple cascades of cell type-specific pathomechanisms. Ischemic brain injury consists of a complex series of cellular reactions in various cell types within the central nervous system (CNS) including platelets, endothelial cells, astrocytes, neutrophils, microglia/macrophages, and neurons. Diverse cellular changes after ischemic injury are likely to induce cell death and tissue damage in the brain. Since cells in the brain exhibit different functional roles at distinct time points after injury (acute/subacute/chronic phases), it is difficult to pinpoint genuine roles of cell types after brain injury. Many experimental studies have shown the association of apoptosis signal-regulating kinase 1 (ASK1) with cellular pathomechanisms after cerebral ischemia. Blockade of ASK1, by either pharmacological or genetic manipulation, leads to reduced ischemic brain injury and subsequent neuroprotective effects. In this review, we present the cell type-specific pathophysiology of the early phase of ischemic stroke, the role of ASK1 suggested by preclinical studies, and the potential use of ASK suppression, either by pharmacologic or genetic suppression, as a promising therapeutic option for ischemic stroke recovery.
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Santler B, Goerge T. Die chronische venöse Insuffizienz - Eine Zusammenfassung der Pathophysiologie, Diagnostik und Therapie. J Dtsch Dermatol Ges 2018; 15:538-557. [PMID: 28485867 DOI: 10.1111/ddg.13242_g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 04/11/2017] [Indexed: 01/06/2023]
Abstract
Die chronische Venenerkrankung ist eine weit verbreitete Krankheit, die in späteren Stadien mit einer Vielzahl an Symptomen, aber auch Komplikationen wie dem Ulcus cruris, einhergeht. Dies wiederum hat weitreichende Auswirkungen auf die Lebensqualität der Patienten wie auch auf das Gesundheitssystem. Für die Diagnostik der chronischen Venenerkrankungen steht eine Auswahl an Verfahren zur Verfügung, wobei sich die farbkodierte Duplexsonographie als Goldstandard etabliert hat. Im Bereich der Therapie kam es in den letzten Jahrzehnten zu großen Fortschritten, sodass heute auch Alternativen zum klassischen Stripping durch die endoluminalen Verfahren zur Verfügung stehen. Die Wahl der Therapieoption ist jedoch weiterhin stark abhängig von mehreren Faktoren, unter anderem von den anatomischen Gegebenheiten und dem Krankheitsstadium. Im folgenden Artikel werden die Anatomie und Pathophysiologie, sowie die aktuellen Standards der Diagnostik und Therapie zusammengefasst.
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Affiliation(s)
- Bettina Santler
- Klinik für Hautkrankheiten - Allgemeine Dermatologie und Venerologie, Universitätsklinikum Münster
| | - Tobias Goerge
- Klinik für Hautkrankheiten - Allgemeine Dermatologie und Venerologie, Universitätsklinikum Münster
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Santler B, Goerge T. Chronic venous insufficiency - a review of pathophysiology, diagnosis, and treatment. J Dtsch Dermatol Ges 2018; 15:538-556. [PMID: 28485865 DOI: 10.1111/ddg.13242] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 04/11/2017] [Indexed: 01/20/2023]
Abstract
Chronic venous disease is a common disorder associated with a variety of symptoms in later disease stages but also with complications such as venous leg ulcer. This, in turn, has substantial socioeconomic effects and significantly impacts patients' quality of life. While there are a number of diagnostic procedures available, color-flow duplex ultrasound has become the gold standard. As regards therapeutic options, major advances have been made in recent decades. Today, there are alternatives to saphenofemoral ligation and stripping of the great saphenous vein, including endovenous thermal ablation techniques. However, treatment selection continues to depend on many factors such as individual anatomical circumstances and disease stage. The following article provides an overview of the anatomy and pathophysiology as well as current diagnostic and therapeutic standards.
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Affiliation(s)
- Bettina Santler
- Department of Dermatology and Venereology, University Hospital Münster, Münster, Germany
| | - Tobias Goerge
- Department of Dermatology and Venereology, University Hospital Münster, Münster, Germany
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Affiliation(s)
- Nhat-Tu Le
- Department of Cardiovascular Sciences, Houston Methodist Research Institute, Houston, TX
| | - Jun-Ichi Abe
- Department of Cardiology, The University of Texas MD Anderson Cancer Center, Houston, TX
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35
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Pankratz F, Hohnloser C, Bemtgen X, Jaenich C, Kreuzaler S, Hoefer I, Pasterkamp G, Mastroianni J, Zeiser R, Smolka C, Schneider L, Martin J, Juschkat M, Helbing T, Moser M, Bode C, Grundmann S. MicroRNA-100 Suppresses Chronic Vascular Inflammation by Stimulation of Endothelial Autophagy. Circ Res 2017; 122:417-432. [PMID: 29208678 DOI: 10.1161/circresaha.117.311428] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 11/13/2017] [Accepted: 12/01/2017] [Indexed: 12/31/2022]
Abstract
RATIONALE The interaction of circulating cells within the vascular wall is a critical event in chronic inflammatory processes, such as atherosclerosis, but the control of the vascular inflammatory state is still largely unclear. OBJECTIVE This study was undertaken to characterize the function of the endothelial-enriched microRNA miR-100 during vascular inflammation and atherogenesis. METHODS AND RESULTS Based on a transcriptome analysis of endothelial cells after miR-100 overexpression, we identified miR-100 as a potent suppressor of endothelial adhesion molecule expression, resulting in attenuated leukocyte-endothelial interaction in vitro and in vivo as shown by flow cytometry and intravital imaging. Mechanistically, miR-100 directly repressed several components of mammalian target of rapamycin complex 1-signaling, including mammalian target of rapamycin and raptor, which resulted in a stimulation of endothelial autophagy and attenuated nuclear factor κB signaling in vitro and in vivo. In a low-density lipoprotein receptor-deficient atherosclerotic mouse model, pharmacological inhibition of miR-100 resulted in enhanced plaque lesion formation and a higher macrophage content of the plaque, whereas a systemic miR-100 replacement therapy had protective effects and attenuated atherogenesis, resulting in a decrease of plaque area by 45%. Finally, analysis of miR-100 expression in >70 samples obtained during carotid endarterectomy revealed that local miR-100 expression was inversely correlated with inflammatory cell content in patients. CONCLUSIONS In summary, we describe an anti-inflammatory function of miR-100 in the vascular response to injury and inflammation and identify an important novel modulator of mammalian target of rapamycin signaling and autophagy in the vascular system. Our findings of miR-100 as a potential protective anti-athero-miR suggest that the therapeutic replacement of this microRNA could be a potential strategy for the treatment of chronic inflammatory diseases, such as atherosclerosis, in the future.
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Affiliation(s)
- Franziska Pankratz
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Catherine Hohnloser
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Xavier Bemtgen
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Caterina Jaenich
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Sheena Kreuzaler
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Imo Hoefer
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Gerard Pasterkamp
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Justin Mastroianni
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Robert Zeiser
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Christian Smolka
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Laura Schneider
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Julien Martin
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Maike Juschkat
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Thomas Helbing
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Martin Moser
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Christoph Bode
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.)
| | - Sebastian Grundmann
- From the Department of Cardiology and Angiology I, Heart Center Freiburg University, Faculty of Medicine, University of Freiburg, Germany (F.P., C.H., X.B., C.J., S.K., C.S., L.S., J.M., M.J., T.H., M.M., C.B., S.G.); Laboratory of Clinical Chemistry and Haematology, University Medical Center Utrecht, The Netherlands (I.H., G.P.); and Department of Hematology, Oncology, and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Germany (J.M., R.Z.).
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KLF2 in Regulation of NF-κB-Mediated Immune Cell Function and Inflammation. Int J Mol Sci 2017; 18:ijms18112383. [PMID: 29125549 PMCID: PMC5713352 DOI: 10.3390/ijms18112383] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Revised: 10/17/2017] [Accepted: 11/08/2017] [Indexed: 01/09/2023] Open
Abstract
KLF2 (Kruppel-like factor 2) is a member of the zinc finger transcription factor family, which critically regulates embryonic lung development, function of endothelial cells and maintenance of quiescence in T-cells and monocytes. It is expressed in naïve T-cells and monocytes, however its level of expression decreases during activation and differentiation. KLF2 also plays critical regulatory role in various inflammatory diseases and their pathogenesis. Nuclear factor-kappaB (NF-κB) is an important inducer of inflammation and the inflammation is mediated through the transcription of several proinflammatory cytokines, chemokines and adhesion molecules. So, both transcriptional factors KLF2 and NF-κB are being associated with the similar cellular functions and their maintenance. It was shown that KLF2 regulates most of the NF-κB-mediated activities. In this review, we focused on emphasizing the involvement of KLF2 in health and disease states and how they interact with transcriptional master regulator NF-κB.
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Mitsuhashi T, Uemoto R, Ishikawa K, Yoshida S, Ikeda Y, Yagi S, Matsumoto T, Akaike M, Aihara KI. Endothelial Nitric Oxide Synthase-Independent Pleiotropic Effects of Pitavastatin Against Atherogenesis and Limb Ischemia in Mice. J Atheroscler Thromb 2017; 25:65-80. [PMID: 28592707 PMCID: PMC5770225 DOI: 10.5551/jat.37747] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Aim: Statins have a protective impact against cardiovascular diseases through not only lipid-lowering effects but also pleiotropic effects, including activation of the endothelial nitric oxide synthase (eNOS) system. We aimed to clarify the protective effects of a statin against atherogenesis and ischemia in eNOS−/− mice. Methods: Study 1. eNOS−/−Apolipoprotein E (ApoE)−/− mice were treated with a vehicle or pitavastatin (0.3 mg/kg/day) for 4 weeks. Study 2. eNOS−/− mice were also treated with a vehicle or the same dose of pitavastatin for 2 weeks prior to hind-limb ischemia. Results: In Study 1, pitavastatin attenuated plaque formation and medial fibrosis of the aortic root with decreased macrophage infiltration in eNOS−/−ApoE−/− mice. PCR array analysis showed reductions in aortic gene expression of proatherogenic factors, including Ccl2 and Ccr2 in pitavastatin-treated double mutant mice. In addition, pitavastatin activated not only atherogenic p38MAPK and JNK but also anti-atherogenic ERK1/2 and ERK5 in the aorta of the double mutant mice. In Study 2, pitavastatin prolonged hind-limb survival after the surgery with increased BCL2-to-BAX protein ratio and inactivated JNK. Enhanced expression of anti-apoptotic genes, including Vegf, Api5, Atf5, Prdx2, and Dad1, was observed in the ischemic limb of pitavastatin-treated eNOS−/− mice. Furthermore, pitavastatin activated both aortic and skeletal muscle AMPK in the eNOS-deficient vascular injury models. Conclusion: Pitavastatin exerts eNOS-independent protective effects against atherogenesis and hindlimb ischemia in mice, which may occur via modifications on key molecules such as AMPK and diverse molecules.
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Affiliation(s)
| | - Ryoko Uemoto
- Department of Community Medicine for Diabetes and Metabolic Disorders, Tokushima University
| | | | - Sumiko Yoshida
- Department of Hematology, Endocrinology & Metabolism, Tokushima University
| | | | - Shusuke Yagi
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences
| | - Toshio Matsumoto
- Fujii Memorial Institute of Medical Sciences, Tokushima University
| | | | - Ken-Ichi Aihara
- Department of Community Medicine for Diabetes and Metabolic Disorders, Tokushima University
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The arterial microenvironment: the where and why of atherosclerosis. Biochem J 2017; 473:1281-95. [PMID: 27208212 DOI: 10.1042/bj20150844] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 02/15/2016] [Indexed: 12/11/2022]
Abstract
The formation of atherosclerotic plaques in the large and medium sized arteries is classically driven by systemic factors, such as elevated cholesterol and blood pressure. However, work over the past several decades has established that atherosclerotic plaque development involves a complex coordination of both systemic and local cues that ultimately determine where plaques form and how plaques progress. Although current therapeutics for atherosclerotic cardiovascular disease primarily target the systemic risk factors, a large array of studies suggest that the local microenvironment, including arterial mechanics, matrix remodelling and lipid deposition, plays a vital role in regulating the local susceptibility to plaque development through the regulation of vascular cell function. Additionally, these microenvironmental stimuli are capable of tuning other aspects of the microenvironment through collective adaptation. In this review, we will discuss the components of the arterial microenvironment, how these components cross-talk to shape the local microenvironment, and the effect of microenvironmental stimuli on vascular cell function during atherosclerotic plaque formation.
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Shalaby SY, Chitragari G, Sumpio BJ, Sumpio BE. Shear Stress Induces Change in Extracellular Signal-Regulated Kinase 5 Levels with Sustained Activation under Disturbed and Continuous Laminar Flow. Int J Angiol 2017; 26:109-115. [PMID: 28566937 DOI: 10.1055/s-0037-1599057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Extracellular signal-regulated kinase 5 (ERK5) has been reported to regulate endothelial integrity and protect from vascular dysfunction under laminar flow. Previously reported research indicates that under laminar flow ERK5 is activated with production of atheroprotective molecules. However, the characterization of ERK5 activation and levels under different flow patterns has not been investigated. Confluent HUVECs were serum-starved then seeded on glass slides. HUVECs incubated in 1% FBS were exposed to continuous laminar flow (CLF), to-and-fro flow (TFF), or pulsatile forward flow (PFF) in a parallel plate flow chamber. At the end of experimentation, cell lysates were immunoblotted with antibodies to phospho-ERK5 and total ERK5. ERK5 activation was assessed by the levels of phosphorylated ERK5. The densitometric mean ± SEM is calculated and analyzed by ANOVA. p < 0.05 is considered significant. Levels of ERK5 decreased with all flow conditions with the largest decrease in TFF flow condition. TFF and CLF exhibited sustained ERK5 phosphorylation in HUVECs stimulated for up to 4 hours. PFF had transient phosphorylation of ERK5 at 2 hours, which then became undetectable at 4 hours of exposure to flow. Also, TFF and CLF both showed decreased levels at 4 hours, suggesting a decrease in activation for these flow conditions. Exposure of HUVEC to different types of shear stress results in varying patterns of activation of ERK5. Activation of ERK5 with TFF suggests a role in the pathogenesis of atherosclerosis and vascular remodeling under disturbed flow conditions.
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Affiliation(s)
- S Y Shalaby
- Section of Vascular Surgery, Yale University, New Haven, Connecticut
| | - G Chitragari
- Section of Vascular Surgery, Yale University, New Haven, Connecticut
| | - B J Sumpio
- Section of Vascular Surgery, Yale University, New Haven, Connecticut
| | - B E Sumpio
- Section of Vascular Surgery, Yale University, New Haven, Connecticut
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Xi G, Wai C, White MF, Clemmons DR. Down-regulation of Insulin Receptor Substrate 1 during Hyperglycemia Induces Vascular Smooth Muscle Cell Dedifferentiation. J Biol Chem 2016; 292:2009-2020. [PMID: 28003360 DOI: 10.1074/jbc.m116.758987] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 12/14/2016] [Indexed: 11/06/2022] Open
Abstract
Diabetes is a major risk factor for the development of atherosclerosis, but the mechanism by which hyperglycemia accelerates lesion development is not well defined. Insulin and insulin-like growth factor I (IGF-I) signal through the scaffold protein insulin receptor substrate 1 (IRS-1). In diabetes, IRS-1 is down-regulated, and cells become resistant to insulin. Under these conditions, the IGF-I receptor signals through an alternate scaffold protein, SHPS-1, resulting in pathophysiologic stimulation of vascular smooth muscle cell (VSMC) migration and proliferation. These studies were undertaken to determine whether IRS-1 is functioning constitutively to maintain VSMCs in their differentiated state and, thereby, inhibit aberrant signaling. Here we show that deletion of IRS-1 expression in VSMCs in non-diabetic mice results in dedifferentiation, SHPS-1 activation, and aberrant signaling and that these changes parallel those that occur in response to hyperglycemia. The mice showed enhanced sensitivity to IGF-I stimulation of VSMC proliferation and a hyperproliferative response to vascular injury. KLF4, a transcription factor that induces VSMC dedifferentiation, was up-regulated in IRS-1-/- mice, and the differentiation inducer myocardin was undetectable. Importantly, these changes were replicated in wild-type mice during hyperglycemia. These findings illuminate a new function of IRS-1: that of maintaining cells in their normal, differentiated state. Because IRS-1 is down-regulated in states of insulin resistance that occur in response to metabolic stresses such as obesity and cytokine stimulation, the findings provide a mechanism for understanding how patients with metabolic stress and/or diabetes are predisposed to developing vascular complications.
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Affiliation(s)
- Gang Xi
- From the Division of Endocrinology, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599
| | - Christine Wai
- From the Division of Endocrinology, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599
| | - Morris F White
- the Division of Endocrinology, Department of Medicine, Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115
| | - David R Clemmons
- From the Division of Endocrinology, Department of Medicine, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599.
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Su YP, Chen CN, Chang HI, Huang KC, Cheng CC, Chiu FY, Lee KC, Lo CM, Chang SF. Low Shear Stress Attenuates COX-2 Expression Induced by Resistin in Human Osteoarthritic Chondrocytes. J Cell Physiol 2016; 232:1448-1457. [DOI: 10.1002/jcp.25644] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 10/10/2016] [Indexed: 12/11/2022]
Affiliation(s)
- Yu-Ping Su
- Department of Orthopaedics and Traumatology; Veterans General Hospital; Taipei Taiwan
- Department of Surgery; School of Medicine; National Yang-Ming University; Taipei Taiwan
- Department of Biomedical Engineering; National Yang-Ming University; Taipei Taiwan
| | - Cheng-Nan Chen
- Department of Biochemical Science and Technology; National Chiayi University; Chiayi Taiwan
| | - Hsin-I Chang
- Department of Biochemical Science and Technology; National Chiayi University; Chiayi Taiwan
| | - Kuo-Chin Huang
- Department of Orthopaedics; Chang Gung Memorial Hospital; Chiayi Branch; Chiayi Taiwan
| | - Chin-Chang Cheng
- Department of Orthopaedics; Chang Gung Memorial Hospital; Chiayi Branch; Chiayi Taiwan
| | - Fang-Yao Chiu
- Department of Orthopaedics and Traumatology; Veterans General Hospital; Taipei Taiwan
- Department of Surgery; School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Ko-Chao Lee
- Division of Colorectal Surgery; Department of Surgery; Chang Gung Memorial Hospital-Kaohsiung Medical Center; Kaohsiung Taiwan
| | - Chun-Min Lo
- Department of Biomedical Engineering; National Yang-Ming University; Taipei Taiwan
| | - Shun-Fu Chang
- Department of Medical Research and Development; Chang Gung Memorial Hospital; Chiayi Branch; Chiayi Taiwan
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MnTBAP increases BMPR-II expression in endothelial cells and attenuates vascular inflammation. Vascul Pharmacol 2016; 84:67-73. [PMID: 27401963 DOI: 10.1016/j.vph.2016.07.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 05/03/2016] [Accepted: 07/01/2016] [Indexed: 11/21/2022]
Abstract
AIMS The endothelium plays an important role during vascular inflammation. Previous data have demonstrated a high expression level of manganese-superoxide dismutase (MnSOD) in endothelial cells and suggested an important role of MnSOD in several cardiovascular diseases. Manganese (III) tetrakis (4-benzoic acid) porphyrin (MnTBAP) has been shown to mimic some of the effects of MnSOD and prevented the development of diabetes and obesity. However, its effect on vascular inflammation and the underlying mechanism is still unknown. METHODS AND RESULTS Leukocyte adhesion was evaluated in-vivo and in-vitro using dynamic flow chamber and intravital microscopy in mice. Expression of adhesion molecules induced by TNFα and adhesion of leukocytes to the vessel wall were inhibited by MnTBAP. The anti-inflammatory effect of MnTBAP was partly mediated by up-regulation of the BMPR-II and Smad dependent pathway. Additionally, MnTBAP decelerated the turn-over of endogenous BMPR-II. CONCLUSION Our data demonstrate that MnTBAP activates Smad signaling, preserves the turn-over of BMPR-II and elicits anti-inflammatory effects in endothelial cells, partly mediated by BMPR-II. This finding suggests a potential therapeutic impact of MnTBAP in the treatment of vascular inflammation.
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D'Aiuto F, Orlandi M, Gunsolley JC. Evidence that periodontal treatment improves biomarkers and CVD outcomes. J Clin Periodontol 2016; 40 Suppl 14:S85-105. [PMID: 23627337 DOI: 10.1111/jcpe.12061] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/14/2012] [Indexed: 12/11/2022]
Abstract
AIM The aim of this review was to critically appraise the evidence on the impact of periodontal treatment of cardiovascular diseases (CVDs) biomarkers and outcomes. METHODS A systematic search was performed in Cinhal, Cochrane, Embase and Medline for relevant articles up to July 2012. Duplicate screening and reference hand searching were performed. Data were then summarized and evidence graded in tables. RESULTS The search resulted in: (a) no evidence on the effects of periodontal therapy on subclinical atherosclerosis, serum levels of CD40 ligand, serum amyloid A and monocyte chemoattractant protein-1, (b) limited evidence on the effects of periodontal therapy on arterial blood pressure, leucocyte counts, fibrinogen, tissue necrosis factor-α, sE-selectin, von Willebrand factors, d-dimers, matrix metalloproteinases, oxidative stress and CVD events, and (c) moderate evidence suggesting a negligible effect of periodontal therapy in reducing interleukin-6 and lipids levels, whilst a positive effect in reducing serum C-reactive protein levels and improving endothelial function. CONCLUSIONS Periodontal therapy triggers a short-term inflammatory response followed by (a) a progressive and consistent reduction of systemic inflammation and (b) an improvement in endothelial function. There is however limited evidence that these acute and chronic changes will either increase or reduce CVD burden of individuals suffering from periodontitis in the long term.
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Affiliation(s)
- Francesco D'Aiuto
- Periodontology Unit, Department of Clinical Research, UCL Eastman Dental Institute, London, UK.
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44
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D'Aiuto F, Orlandi M, Gunsolley JC. Evidence that periodontal treatment improves biomarkers and CVD outcomes. J Periodontol 2016; 84:S85-S105. [PMID: 23631587 DOI: 10.1902/jop.2013.134007] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
AIM The aim of this review was to critically appraise the evidence on the impact of periodontal treatment of cardiovascular diseases (CVDs) biomarkers and outcomes. METHODS A systematic search was performed in Cinhal, Cochrane, Embase and Medline for relevant articles up to July 2012. Duplicate screening and reference hand searching were performed. Data were then summarized and evidence graded in tables. RESULTS The search resulted in: (a) no evidence on the effects of periodontal therapy on subclinical atherosclerosis, serum levels of CD40 ligand, serum amyloid A and monocyte chemoattractant protein-1, (b) limited evidence on the effects of periodontal therapy on arterial blood pressure, leucocyte counts, fibrinogen, tissue necrosis factor-a, sE-selectin, von Willebrand factors, d-dimers, matrix metalloproteinases, oxidative stress and CVD events, and (c) moderate evidence suggesting a negligible effect of periodontal therapy in reducing interleukin-6 and lipids levels, whilst a positive effect in reducing serum C-reactive protein levels and improving endothelial function. CONCLUSIONS Periodontal therapy triggers a short-term inflammatory response followed by (a) a progressive and consistent reduction of systemic inflammation and (b) an improvement in endothelial function. There is however limited evidence that these acute and chronic changes will either increase or reduce CVD burden of individuals suffering from periodontitis in the long term.
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Affiliation(s)
- Francesco D'Aiuto
- Periodontology Unit, Department of Clinical Research, UCL Eastman Dental Institute, University College London, UK.
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Hsu CH, Lin CL, Wang SE, Sheu SJ, Chien CT, Wu CH. Oral treatment with herbal formula B401 alleviates penile toxicity in aging mice with manganism. Clin Interv Aging 2015; 10:907-18. [PMID: 26064043 PMCID: PMC4455845 DOI: 10.2147/cia.s82026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The present study aims to elucidate the roles of nitric oxide synthase activity, oxidative stress, inflammation, and apoptosis in penile toxicity of aging mice associated with excess manganese (Mn) treatment and to investigate the effect of oral treatment with the herbal formula B401 in this respect. ICR strain mice were divided into two groups: the vehicle (sham group) and the B401 (50 mg/kg) group. The mice were orally treated for 5 days; then a high single dose of MnCl2 (100 mg/kg) was given by intraperitoneal injection to the mice. One day after MnCl2 treatment, corpora cavernosal tissues of both Mn-treated mice and their controls were simultaneously sampled to examine their immunohistochemical staining and Western blot analysis. Nitric oxide (NO) production, levels of neuronal nitric oxide synthase (nNOS) and endothelial nitric oxide synthase (eNOS), expression levels of factors governing angiogenesis (vascular endothelial growth factor), oxidative stress (catalase, superoxide dismutase 2,4-hydroxynonenal), inflammation (tumor necrosis factor alpha), apoptosis (B-cell lymphoma 2 [Bcl-2], Bcl-2-associated X protein [Bax], cleaved poly(adenosine diphosphate-ribose) polymerase [c-PARP], cytochrome C, caspase-12, and caspase-3) were evaluated in penile corpus cavernosum of the mice. We found that penile toxicity in the mice was enhanced under excess Mn treatment through reduction of NOS activity and increase in oxidative stress, inflammation, and apoptosis in the penile cavernous tissue. Furthermore, the penile toxicity in mice with manganism was alleviated by oral B401 treatment through enhancement of both nitric oxide synthesis and angiogenesis, with simultaneous reduction of oxidative stress, inflammation, and apoptosis in penile corpus cavernosum. We suggest that the herbal formula B401 may serve as a potential dietotherapeutic supplement for penile toxicity or dysfunction in aging males.
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Affiliation(s)
- Chih-Hsiang Hsu
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Ching-Lung Lin
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Sheue-Er Wang
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | | | - Chiang-Ting Chien
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
| | - Chung-Hsin Wu
- Department of Life Science, National Taiwan Normal University, Taipei, Taiwan
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Pattanaik D, Brown M, Postlethwaite BC, Postlethwaite AE. Pathogenesis of Systemic Sclerosis. Front Immunol 2015; 6:272. [PMID: 26106387 PMCID: PMC4459100 DOI: 10.3389/fimmu.2015.00272] [Citation(s) in RCA: 253] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 05/16/2015] [Indexed: 01/04/2023] Open
Abstract
Systemic scleroderma (SSc) is one of the most complex systemic autoimmune diseases. It targets the vasculature, connective tissue-producing cells (namely fibroblasts/myofibroblasts), and components of the innate and adaptive immune systems. Clinical and pathologic manifestations of SSc are the result of: (1) innate/adaptive immune system abnormalities leading to production of autoantibodies and cell-mediated autoimmunity, (2) microvascular endothelial cell/small vessel fibroproliferative vasculopathy, and (3) fibroblast dysfunction generating excessive accumulation of collagen and other matrix components in skin and internal organs. All three of these processes interact and affect each other. The disease is heterogeneous in its clinical presentation that likely reflects different genetic or triggering factor (i.e., infection or environmental toxin) influences on the immune system, vasculature, and connective tissue cells. The roles played by other ubiquitous molecular entities (such as lysophospholipids, endocannabinoids, and their diverse receptors and vitamin D) in influencing the immune system, vasculature, and connective tissue cells are just beginning to be realized and studied and may provide insights into new therapeutic approaches to treat SSc.
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Affiliation(s)
- Debendra Pattanaik
- Department of Medicine, Division of Connective Tissue Diseases, The University of Tennessee Health Science Center , Memphis, TN , USA ; Department of Veterans Affairs Medical Center , Memphis, TN , USA
| | - Monica Brown
- Section of Pediatric Rheumatology, Department of Pediatrics, The University of Tennessee Health Science Center , Memphis, TN , USA
| | - Bradley C Postlethwaite
- Department of Medicine, Division of Connective Tissue Diseases, The University of Tennessee Health Science Center , Memphis, TN , USA
| | - Arnold E Postlethwaite
- Department of Medicine, Division of Connective Tissue Diseases, The University of Tennessee Health Science Center , Memphis, TN , USA ; Department of Veterans Affairs Medical Center , Memphis, TN , USA
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Zheng S, Long L, Li Y, Xu Y, Jiqin Z, Ji W, Min W. A Novel ASK Inhibitor AGI-1067 Inhibits TLR-4-Mediated Activation of ASK1 by Preventing Dissociation of Thioredoxin from ASK1. CARDIOVASCULAR PHARMACOLOGY: OPEN ACCESS 2015; 4:132. [PMID: 28435845 PMCID: PMC5397116 DOI: 10.4172/2329-6607.1000132] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The cell type that normally limits the inflammatory and atherosclerotic process is the vascular endothelial cell (EC) that can be regulated by proinflammatory and various stresses. Toll-like receptor-4 (TLR4) plays an important role in the pathogenesis of atherosclerosis, in part, by activating apoptosis signal-regulating kinase 1 (ASK1) to initiate the activation of MAP kinases pathways and the expression of inflammatory genes. In the present study, we test the hypothesis that AGI-1067 acts as an anti-inflammatory agent by inhibiting the activation of ASK1 in human EC. Pretreatment of human aortic endothelial cells with AGI-1067 inhibits TLR4 ligand (LPS)-induced activation of ASK1 and the downstream p38 and c-Jun N-terminal kinase (JNK) MAP kinases. LPS dissociates two endogenous inhibitors thioredoxin-1 (Trx1) and 14-3-3 from ASK1, leading to ASK1 autoactivation. Interestingly, AGI-1067 inhibits the dissociation of Trx1, but not 14-3-3, from ASK1. However, inhibition of Trx1 dissociation from ASK1 by AGI-1067 is sufficient to suppress LPS-mediated phosphorylation of the transcription factors c-Jun and activating transcription factor 2, and inhibit LPS-induced inflammatory genes including vascular cell adhesion molecule 1, E-selectin, IL-6 and monocyte chemoattractant protein 1. Our findings suggest that AGI-1067 as a unique ASK1 inhibitor to inhibit TLR4-mediated ASK1 activation, contributing to its anti-inflammatory properties.
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Affiliation(s)
- Shuhui Zheng
- The Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Lingli Long
- The Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Yonghao Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yuxia Xu
- The Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Zhang Jiqin
- The Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Weidong Ji
- The Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Wang Min
- The Center for Translational Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
- Interdepartmental Program in Vascular Biology and Therapeutics, Dept. of Pathology, Yale University School of Medicine, New Haven, CT 06520
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Shalaby S, Chitragari G, Sumpio BJ, Sumpio BE. Characterization of extracellular signal-regulated kinase 5 levels in human umbilical vein endothelial cells exposed to disturbed and uniform flow. Int J Angiol 2014; 23:187-92. [PMID: 25317031 DOI: 10.1055/s-0034-1378136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Extracellular signal-regulated kinase 5 (ERK5) has been reported to regulate endothelial cell integrity and protect from vascular dysfunction under continuous laminar flow. However, the effect of flow on ERK5 levels has not been determined. Confluent human umbilical vein endothelial cells (HUVECs) were seeded on fibronectin coated glass slides and serum starved for 2 hours with 1% fetal bovine serum (FBS). HUVECs were then exposed to to and fro flow (TFF), pulsatile forward flow (PFF), or continuous laminar flow (CLF) in a parallel plate flow chamber for up to 2 hours. At the end of experiment, cell lysates were prepared and immunoblotted with antibodies to total ERK5. Both CLF and TFF exhibited a decrease in ERK5 after levels after 2-hour exposure. However, the level of ERK5 for PFF remained the same. Disturbed, but not uniform pulsatile, flow decreases ERK5 levels in HUVECs.
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Affiliation(s)
- Sherif Shalaby
- Department of Vascular Surgery, Yale University School of Medicine, New Haven, Connecticut
| | - Gautham Chitragari
- Department of Vascular Surgery, Yale University School of Medicine, New Haven, Connecticut
| | - Brandon J Sumpio
- Department of Vascular Surgery, Yale University School of Medicine, New Haven, Connecticut
| | - Bauer E Sumpio
- Department of Vascular Surgery, Yale University School of Medicine, New Haven, Connecticut
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Ku SK, Bae JS. Antithrombotic activities of wogonin and wogonoside via inhibiting platelet aggregation. Fitoterapia 2014; 98:27-35. [DOI: 10.1016/j.fitote.2014.07.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2014] [Revised: 07/05/2014] [Accepted: 07/05/2014] [Indexed: 10/25/2022]
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TNF-α augmented Porphyromonas gingivalis invasion in human gingival epithelial cells through Rab5 and ICAM-1. BMC Microbiol 2014; 14:229. [PMID: 25179218 PMCID: PMC4159534 DOI: 10.1186/s12866-014-0229-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 08/19/2014] [Indexed: 01/12/2023] Open
Abstract
Background Tumor necrosis factor alpha (TNF-α) plays a central role in the initiation and maintenance of immune responses to periodontopathic bacteria. However, excess TNF-α leads to dysregulated immune responses and progression of periodontitis. Porphyromonas gingivalis (P. gingivalis) invades gingival epithelial cells and then multiplies and survives for a long period. Additionally, increment of TNF-α in periodontal sites is associated with a high prevalence of gram-negative anaerobes such as P. gingivalis. However, it has not been determined whether TNF-α affects invasion of P. gingivalis in periodontal tissues. Results We examined the effect of TNF-α on invasion of P. gingivalis in gingival epithelial cells and clarified the mechanism by which TNF-α augments invasion of P. gingivalis. Invasion of P. gingivalis into Ca9-22 cells was augmented by stimulation with TNF-α and it was inhibited by treatment with an antibody to TNF receptor-1. TNF-α increased production of ICAM-1, and P. gingivalis invasion was inhibited by an antibody to ICAM-1 in Ca9-22 cells. Silencing of Rab5 mRNA inhibited P. gingivalis invasion. Furthermore, the JNK inhibitor SP600125 inhibited invasion of P. gingivalis and also decreased the active form of Rab5 in Ca9-22 cells. Conclusion TNF-α augments invasion of P. gingivalis in human gingival epithelial cells through increment of ICAM-1 and activation of Rab5. These phenomena may contribute to persistent infection of P. ginigvalis and prolongation of immune responses in periodontal tissues. Electronic supplementary material The online version of this article (doi:10.1186/s12866-014-0229-z) contains supplementary material, which is available to authorized users.
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