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Liu C, Niu K, Xiao Q. Updated perspectives on vascular cell specification and pluripotent stem cell-derived vascular organoids for studying vasculopathies. Cardiovasc Res 2022; 118:97-114. [PMID: 33135070 PMCID: PMC8752356 DOI: 10.1093/cvr/cvaa313] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/15/2020] [Accepted: 10/19/2020] [Indexed: 02/07/2023] Open
Abstract
Vasculopathy is a pathological process occurring in the blood vessel wall, which could affect the haemostasis and physiological functions of all the vital tissues/organs and is one of the main underlying causes for a variety of human diseases including cardiovascular diseases. Current pharmacological interventions aiming to either delay or stop progression of vasculopathies are suboptimal, thus searching novel, targeted, risk-reducing therapeutic agents, or vascular grafts with full regenerative potential for patients with vascular abnormalities are urgently needed. Since first reported, pluripotent stem cells (PSCs), particularly human-induced PSCs, have open new avenue in all research disciplines including cardiovascular regenerative medicine and disease remodelling. Assisting with recent technological breakthroughs in tissue engineering, in vitro construction of tissue organoid made a tremendous stride in the past decade. In this review, we provide an update of the main signal pathways involved in vascular cell differentiation from human PSCs and an extensive overview of PSC-derived tissue organoids, highlighting the most recent discoveries in the field of blood vessel organoids as well as vascularization of other complex tissue organoids, with the aim of discussing the key cellular and molecular players in generating vascular organoids.
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MESH Headings
- Blood Vessels/metabolism
- Blood Vessels/pathology
- Blood Vessels/physiopathology
- Cell Culture Techniques
- Cell Differentiation
- Cell Lineage
- Cells, Cultured
- Endothelial Cells/metabolism
- Endothelial Cells/pathology
- Humans
- Induced Pluripotent Stem Cells/metabolism
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Muscle, Smooth, Vascular/physiopathology
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- Neovascularization, Pathologic
- Neovascularization, Physiologic
- Organoids
- Phenotype
- Signal Transduction
- Vascular Diseases/metabolism
- Vascular Diseases/pathology
- Vascular Diseases/physiopathology
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Affiliation(s)
- Chenxin Liu
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Heart Centre, Charterhouse Square, London EC1M 6BQ, UK
| | - Kaiyuan Niu
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Heart Centre, Charterhouse Square, London EC1M 6BQ, UK
| | - Qingzhong Xiao
- Centre for Clinical Pharmacology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Heart Centre, Charterhouse Square, London EC1M 6BQ, UK
- Key Laboratory of Cardiovascular Diseases at The Second Affiliated Hospital
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, School of Basic Medical Sciences, Guangzhou Medical University, Xinzao Town, Panyu District, Guangzhou, Guangdong 511436, China
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2
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Ghoneim FM, Abo-Elkhair SM, Elsamanoudy AZ, Shabaan DA. Evaluation of Endothelial Dysfunction and Autophagy in Fibromyalgia-Related Vascular and Cerebral Cortical Changes and the Ameliorative Effect of Fisetin. Cells 2021; 11:48. [PMID: 35011610 PMCID: PMC8750434 DOI: 10.3390/cells11010048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 11/17/2022] Open
Abstract
Fibromyalgia (FM) is a common chronic pain syndrome that affects 1% to 5% of the population. We aimed to investigate the role of endothelial dysfunction and autophagy in fibromyalgia-related vascular and cerebral cortical changes in a reserpine-induced rat model of fibromyalgia at the histological and molecular levels and to study the ameliorative effect of fisetin. Forty adult female albino rats were divided into four groups (10 each): two control groups, the reserpine-induced fibromyalgia group, and the fisetin-treated group. The carotid arteries and brains of the animals were dissected. Frozen tissue samples were used for total RNA extraction and qPCR analysis of eNOS, caspase-3, Bcl-2, LC-3, BECN-1, CHOP, and TNF-α expression. Histological, immunohistochemical (eNOS), and ultrastructure studies were conducted. The carotid arteries revealed excessive autophagy and endothelial, vascular, and apoptotic changes. The cerebral cortex showed similar findings apart from endoplasmic reticulum stress. Additionally, there was decreased gene expression of eNOS and Bcl-2 and increased expression of caspase-3, LC-3, BECN-1, CHOP, and TNF-α. In the fisetin-treated rats, improvements in the histological and molecular results were detected. In conclusion, oxidative stress, enhanced apoptosis, and excessive autophagy are fundamental pathophysiologic mechanisms of reserpine-induced fibromyalgia. Moreover, fisetin has an ameliorative effect against fibromyalgia.
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Affiliation(s)
- Fatma Mohamed Ghoneim
- Histology and Cell Biology Department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt; (F.M.G.); (D.A.S.)
| | - Salwa Mohamed Abo-Elkhair
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt;
| | - Ayman Zaky Elsamanoudy
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt;
- Clinical Biochemistry Department, Faculty of Medicine, King Abdulaziz University, Jeddah 21465, Saudi Arabia
| | - Dalia A. Shabaan
- Histology and Cell Biology Department, Faculty of Medicine, Mansoura University, Mansoura 35516, Egypt; (F.M.G.); (D.A.S.)
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Cruz-López EO, Uijl E, Danser AHJ. Perivascular Adipose Tissue in Vascular Function: Does Locally Synthesized Angiotensinogen Play a Role? J Cardiovasc Pharmacol 2021; 78:S53-S62. [PMID: 34840262 DOI: 10.1097/fjc.0000000000001027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 03/17/2021] [Indexed: 12/31/2022]
Abstract
ABSTRACT In recent years, perivascular adipose tissue (PVAT) research has gained special attention in an effort to understand its involvement in vascular function. PVAT is recognized as an important endocrine organ that secretes procontractile and anticontractile factors, including components of the renin-angiotensin-aldosterone system, particularly angiotensinogen (AGT). This review critically addresses the occurrence of AGT in PVAT, its release into the blood stream, and its contribution to the generation and effects of angiotensins (notably angiotensin-(1-7) and angiotensin II) in the vascular wall. It describes that the introduction of transgenic animals, expressing AGT at 0, 1, or more specific location(s), combined with the careful measurement of angiotensins, has revealed that the assumption that PVAT independently generates angiotensins from locally synthesized AGT is incorrect. Indeed, selective deletion of AGT from adipocytes did not lower circulating AGT, neither under a control diet nor under a high-fat diet, and only liver-specific AGT deletion resulted in the disappearance of AGT from blood plasma and adipose tissue. An entirely novel scenario therefore develops, supporting local angiotensin generation in PVAT that depends on the uptake of both AGT and renin from blood, in addition to the possibility that circulating angiotensins exert vascular effects. The review ends with a summary of where we stand now and recommendations for future research.
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Affiliation(s)
- Edwyn O Cruz-López
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
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Opichka MA, Rappelt MW, Gutterman DD, Grobe JL, McIntosh JJ. Vascular Dysfunction in Preeclampsia. Cells 2021; 10:cells10113055. [PMID: 34831277 PMCID: PMC8616535 DOI: 10.3390/cells10113055] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/01/2021] [Accepted: 11/04/2021] [Indexed: 01/22/2023] Open
Abstract
Preeclampsia is a life-threatening pregnancy-associated cardiovascular disorder characterized by hypertension and proteinuria at 20 weeks of gestation. Though its exact underlying cause is not precisely defined and likely heterogenous, a plethora of research indicates that in some women with preeclampsia, both maternal and placental vascular dysfunction plays a role in the pathogenesis and can persist into the postpartum period. Potential abnormalities include impaired placentation, incomplete spiral artery remodeling, and endothelial damage, which are further propagated by immune factors, mitochondrial stress, and an imbalance of pro- and antiangiogenic substances. While the field has progressed, current gaps in knowledge include detailed initial molecular mechanisms and effective treatment options. Newfound evidence indicates that vasopressin is an early mediator and biomarker of the disorder, and promising future therapeutic avenues include mitigating mitochondrial dysfunction, excess oxidative stress, and the resulting inflammatory state. In this review, we provide a detailed overview of vascular defects present during preeclampsia and connect well-established notions to newer discoveries at the molecular, cellular, and whole-organism levels.
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Affiliation(s)
- Megan A. Opichka
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (M.A.O.); (D.D.G.); (J.L.G.)
| | - Matthew W. Rappelt
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
| | - David D. Gutterman
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (M.A.O.); (D.D.G.); (J.L.G.)
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Justin L. Grobe
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (M.A.O.); (D.D.G.); (J.L.G.)
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
- Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Comprehensive Rodent Metabolic Phenotyping Core, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Department of Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Jennifer J. McIntosh
- Department of Physiology, Medical College of Wisconsin, Milwaukee, WI 53226, USA; (M.A.O.); (D.D.G.); (J.L.G.)
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
- Department of Obstetrics and Gynecology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Correspondence: ; Tel.: +1-(414)-805-9019
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Otto M, Brabenec L, Müller M, Kintrup S, Hellenthal KEM, Holtmeier R, Steinbuch SC, Karsten OS, Pryvalov H, Rossaint J, Gross ER, Wagner NM. Development of heart failure with preserved ejection fraction in type 2 diabetic mice is ameliorated by preserving vascular function. Life Sci 2021; 284:119925. [PMID: 34480933 PMCID: PMC8484044 DOI: 10.1016/j.lfs.2021.119925] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/13/2021] [Accepted: 08/21/2021] [Indexed: 11/26/2022]
Abstract
AIMS Heart failure with preserved ejection fraction (HFpEF) is associated with endothelial dysfunction and is frequent in people with type 2 diabetes mellitus. In diabetic patients, increased levels of the eicosanoid 12-hydroxyeicosatetraenoic acid (12-HETE) are linked to vascular dysfunction. Here, we aimed to identify the importance of 12-HETE in type 2 diabetic patients exhibiting diastolic dysfunction, and mice exhibiting HFpEF and whether targeting 12-HETE is a means to ameliorate HFpEF progression by improving vascular function in diabetes. MATERIAL AND METHODS Subjects with diagnosed type 2 diabetes mellitus and reported diastolic dysfunction or healthy controls were recruited and 12(S)-HETE levels determined by ELISA. 12(S)-HETE levels were determined in type 2 diabetic, leptin receptor deficient mice (LepRdb/db) and HFpEF verified by echocardiography. Mitochondrial function, endothelial function and capillary density were assessed using Seahorse technique, pressure myography and immunohistochemistry in LepRdb/db or non-diabetic littermate controls. 12/15Lo generation was inhibited using ML351 and 12(S)-HETE action by using the V1-cal peptide. KEY FINDINGS Endothelium-dependent vasodilation and mitochondrial functional capacity both improved in response to either application of ML351 or the V1-cal peptide. Correlating to improved vascular function, mice treated with either pharmacological agent exhibited improved diastolic filling and left ventricular relaxation that correlated with increased myocardial capillary density. SIGNIFICANCE Our results suggest that 12-HETE may serve as a biomarker indicating endothelial dysfunction and the resulting cardiovascular consequences such as HFpEF in type 2 diabetic patients. Antagonizing 12-HETE is a potent means to causally control HFpEF development and progression in type 2 diabetes by preserving vascular function.
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Affiliation(s)
- Mandy Otto
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| | - Laura Brabenec
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| | - Melanie Müller
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| | - Sebastian Kintrup
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| | - Katharina E M Hellenthal
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| | - Richard Holtmeier
- Institute of Clinical Radiology, University Hospital Muenster, Muenster, Germany
| | - Sophie Charlotte Steinbuch
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| | - Ole Sönken Karsten
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| | - Heorhii Pryvalov
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| | - Jan Rossaint
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany
| | - Eric R Gross
- Department of Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA, USA
| | - Nana-Maria Wagner
- Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Muenster, Muenster, Germany.
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Abstract
The aim of this study was to develop a robust algorithm to quantify pulse sharpness that can complement the limitations of radial augmentation index (rAIx) and explore the role of this quantitative sharpness index in reflecting vascular aging or arterial stiffness. The pulse sharpness index (PSI) was developed by combining the end point angle and virtual height, and 528 radial pulses were analyzed. The PSI could be uniformly applied to various waveform morphologies, even those with no or vague tidal waves, unlike the rAIx. Significant sex differences were identified in the rAIx and PSI (P < 0.01 for both), and significant age-dependent decreases in the PSI were observed (P < 0.01). In addition, the PSI and age were correlated (r = - 0.550) at least as strong as the rAIx and age (r = 0.532), and the PSI had a significant negative correlation with arterial stiffness (r = - 0.700). Furthermore, the multiple linear regression model for arterial stiffness using the PSI, age, sex and heart rate showed the excellent performance (cross-validated R2 = 0.701), and the PSI was found to have the greatest influence on arterial stiffness. This study confirmed that the PSI could be a quantitative index of vascular aging and has potential for use in inferring arterial stiffness with an advantage over the rAIx.
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Affiliation(s)
- Jang-Han Bae
- Digital Health Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon, Republic of Korea
| | - Young Ju Jeon
- Digital Health Research Division, Korea Institute of Oriental Medicine, 1672 Yuseong-daero, Yuseong-gu, Daejeon, Republic of Korea.
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Chen M, Zhang Y, Wang H, Yang H, Yin W, Xu S, Jiang T, Wang M, Wu F, Yu W. Inhibition of the norepinephrine transporter rescues vascular hyporeactivity to catecholamine in obstructive jaundice. Eur J Pharmacol 2021; 900:174055. [PMID: 33775645 DOI: 10.1016/j.ejphar.2021.174055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 03/10/2021] [Accepted: 03/17/2021] [Indexed: 11/18/2022]
Abstract
In patients with obstructive jaundice, the cardiovascular system exhibits hypotension and vascular hyporeactivity. Most norepinephrine is taken up through the neuronal norepinephrine transporter (NET), which is implicated in cardiovascular diseases. A previous study demonstrated that pharmacological NET inhibition could increase resting blood pressure. However, the role of NETs in vascular hyporeactivity induced by obstructive jaundice is poorly understood. This study used the NET inhibitor nisoxetine and a rat model of bile duct ligation (BDL) to investigate whether NET is associated with BDL-induced vascular hyporeactivity. Rats were injected with nisoxetine via the tail vein for 7 consecutive days after BDL. Samples of the superior cervical sympathetic ganglion (SCG) and thoracic aortic rings were processed for investigations. Our results showed that NET expression in the SCG was significantly increased after BDL. Nisoxetine prevented the augmentation of NET expression, increased α1-adrenoceptor activation, and enhanced the weakened contractile responses of thoracic aortic rings after BDL. Our study demonstrates that nisoxetine plays a protective role in BDL-induced vascular hyporeactivity through increased α1-adrenoceptor activation in rats.
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Affiliation(s)
- Mo Chen
- Department of Anesthesiology, Eastern Hepatobiliary Surgery Hospital, Naval Medical University, No. 225 Changhai Road, Shanghai, China; Medical College of Soochow University, No. 199 Renai Street, Suzhou, Jiangsu, China
| | - Yan Zhang
- Department of Anesthesiology, Zhoushan Hospital, Wenzhou Medical University, No. 739 Dingshen Road, Zhoushan, Zhejiang, China
| | - Hongqian Wang
- Department of Anesthesiology, Eastern Hepatobiliary Surgery Hospital, Naval Medical University, No. 225 Changhai Road, Shanghai, China
| | - Hao Yang
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160 Pudian Road, Shanghai, China
| | - Wen Yin
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160 Pudian Road, Shanghai, China
| | - Saihong Xu
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160 Pudian Road, Shanghai, China
| | - Tao Jiang
- Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160 Pudian Road, Shanghai, China
| | - Mansi Wang
- Department of Pathology, Fudan University Shanghai Cancer Center, No. 399 Lingling Road, Shanghai, China
| | - Feixiang Wu
- Department of Intensive Care Medicine, Eastern Hepatobiliary Surgery Hospital, Naval Medical University, No. 225 Changhai Road, Shanghai, China.
| | - Weifeng Yu
- Department of Anesthesiology, Eastern Hepatobiliary Surgery Hospital, Naval Medical University, No. 225 Changhai Road, Shanghai, China; Department of Anesthesiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, No. 160 Pudian Road, Shanghai, China.
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Climie RE, Bruno RM, Hametner B, Mayer CC, Terentes-Printzios D. Vascular Age Is Not Only Atherosclerosis, it Is Also Arteriosclerosis. J Am Coll Cardiol 2021; 76:229-230. [PMID: 32646575 DOI: 10.1016/j.jacc.2020.03.081] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 03/30/2020] [Indexed: 11/20/2022]
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Told R, Georgopoulos M, Reiter GS, Wassermann L, Aliyeva L, Baumann L, Abela-Formanek C, Pollreisz A, Schmidt-Erfurth U, Sacu S. Intraretinal microvascular changes after ERM and ILM peeling using SSOCTA. PLoS One 2020; 15:e0242667. [PMID: 33259500 PMCID: PMC7707569 DOI: 10.1371/journal.pone.0242667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 11/06/2020] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND To prospectively investigate retinal vascular changes in patients undergoing epiretinal membrane (ERM) and internal limiting membrane (ILM) peeling using swept source optical coherence tomography angiography (SSOCTA). METHODS Consecutive patients were grouped based on ERM severity and followed using SSOCTA up to month 3 after surgical intervention. Superficial and deep foveal avascular zone (s/dFAZ) as well as foveal and parafoveal vessel density (VD) were correlated with ERM severity and visual acuity. Differences between groups were evaluated. RESULTS Significant correlations were found between ERM severity and baseline sFAZ, dFAZ and best corrected visual acuity (BCVA), central retinal subfield thickness (CST) and ΔCST (r = -0.52, r = -0.43, r = -0.42, r = 0.58, r = 0.39; all p<0.05). Vascular flow parameters did not correlate with age, peeling size, pseudophakia or CST, but correlated with intraretinal cysts presence. No associations of BCVA with any of the OCTA parameters across time were found. Significant differences between ERM severity groups 1 and 2 were found for sFAZ at baseline (p = 0.005) and at the 3-month follow-up (p = 0.014), and for dFAZ at baseline (p = 0.017). Superficial foveal and parafoveal VD were not significantly different between groups (all p>0.05). CONCLUSIONS This study clearly shows that ERM severity based on ERM staging has to be taken into account when undertaking studies in patients with idiopathic ERM using SSOCTA. Further, specific changes in the superficial and deep retinal vasculature in eyes undergoing ERM and ILM peeling were found. However, the clinical usefulness and prognostic value for post-surgical treatment BCVA of the SSOCTA-derived variables (sFAZ and dFAZ area, as well as foveal and parafoveal VD) used remains questionable.
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Affiliation(s)
- Reinhard Told
- Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria
| | - Michael Georgopoulos
- Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria
| | - Gregor Sebastian Reiter
- Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria
| | - Lorenz Wassermann
- Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria
| | - Leyla Aliyeva
- Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria
| | - Lukas Baumann
- Department of Medical Statistics Vienna, Medical University of Vienna, Vienna, Austria
| | - Claudette Abela-Formanek
- Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria
| | - Andreas Pollreisz
- Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria
| | - Ursula Schmidt-Erfurth
- Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria
| | - Stefan Sacu
- Department of Ophthalmology and Optometry, Vienna Trial Center (VTC), Medical University of Vienna, Vienna, Austria
- * E-mail:
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Mondal R, Lahiri D, Deb S, Bandyopadhyay D, Shome G, Sarkar S, Paria SR, Thakurta TG, Singla P, Biswas SC. COVID-19: Are we dealing with a multisystem vasculopathy in disguise of a viral infection? J Thromb Thrombolysis 2020; 50:567-579. [PMID: 32627126 PMCID: PMC7335630 DOI: 10.1007/s11239-020-02210-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
After the emergence of Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV) and Middle East Respiratory Syndrome Coronavirus (MERS-CoV) in the last two decades, the world is facing its new challenge in Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) pandemic with unprecedented global response. With the expanding domain of presentations in COVID-19 patients, the full range of manifestations is yet to unfold. The classical clinical symptoms for SARS-CoV-2 affected patients are dry cough, high fever, dyspnoea, lethal pneumonia whereas many patients have also been found to be associated with a few additional signs and clinical manifestations of isolated vasculopathy. Albeit a deep and profound knowledge has been gained on the clinical features and management of COVID-19, less clear association has been provided on SARS-CoV-2 mediated direct or indirect vasculopathy and its possible correlation with disease prognosis. The accumulative evidences suggest that novel coronavirus, apart from its primary respiratory confinement, may also invade vascular endothelial cells of several systems including cerebral, cardio-pulmonary as well as renal microvasculature, modulating multiple visceral perfusion indices. Here we analyse the phylogenetic perspective of SARS-CoV-2 along with other strains of β-coronaviridae from a standpoint of vasculopathic derangements. Based on the existing case reports, literature and open data bases, we also analyse the differential pattern of vasculopathy related changes in COVID-19 positive patients. Besides, we debate the need of modulation in clinical approach from a hemodynamical point of view, as a measure towards reducing disease transmission, morbidity and mortality in SARS-CoV-2 affected patients.
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Affiliation(s)
- Ritwick Mondal
- Institute of Post Graduate Medical Education and Research, SSKM Hospital, 52/1A, S.N. Pandit Street, Kolkata, 700025, India
| | - Durjoy Lahiri
- Institute of Post Graduate Medical Education and Research, SSKM Hospital, 52/1A, S.N. Pandit Street, Kolkata, 700025, India.
| | - Shramana Deb
- S.N. Pradhan Centre for Neuroscience, University of Calcutta, Kolkata, India
| | - Deebya Bandyopadhyay
- Institute of Post Graduate Medical Education and Research, SSKM Hospital, 52/1A, S.N. Pandit Street, Kolkata, 700025, India
| | - Gourav Shome
- Department of Microbiology, University of Calcutta, Kolkata, India
| | - Sukanya Sarkar
- CSIR-Indian Institute of Chemical Biology, Kolkata, India
| | - Sudeb R Paria
- Institute of Post Graduate Medical Education and Research, SSKM Hospital, 52/1A, S.N. Pandit Street, Kolkata, 700025, India
| | | | - Pratibha Singla
- Gian Sagar Medical College and Hospital, Patiala, Punjab, India
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11
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Honda H, Kimachi M, Kurita N, Joki N, Nangaku M. Low rather than high mean corpuscular volume is associated with mortality in Japanese patients under hemodialysis. Sci Rep 2020; 10:15663. [PMID: 32973294 PMCID: PMC7515877 DOI: 10.1038/s41598-020-72765-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/31/2020] [Indexed: 12/19/2022] Open
Abstract
Recent studies have reported that high mean corpuscular volume (MCV) might be associated with mortality in patients with advanced chronic kidney disease (CKD). However, the question of whether a high MCV confers a risk for mortality in Japanese patients remains unclear. We conducted a longitudinal analysis of a cohort of 8571 patients using data derived from the Japan Dialysis Outcomes and Practice Patterns Study (J-DOPPS) phases 1 to 5. Associations of all-cause mortality, vascular events, and hospitalization due to infection with baseline MCV were examined via Cox proportional hazard models. Non-linear relationships between MCV and these outcomes were examined using restricted cubic spline analyses. Associations between time-varying MCV and these outcomes were also examined as sensitivity analyses. Cox proportional hazard models showed a significant association of low MCV (< 90 fL), but not for high MCV (102 < fL), with a higher incidence of all-cause mortality and hospitalization due to infection compared with 94 ≤ MCV < 98 fL (reference). Cubic spline analysis indicated a graphically U-shaped association between baseline MCV and all-cause mortality (p for non-linearity p < 0.001). In conclusion, a low rather than high MCV might be associated with increased risk for all-cause mortality and hospitalization due to infection among Japanese patients on hemodialysis.
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Affiliation(s)
- Hirokazu Honda
- Department of Medicine, Division of Nephrology, Showa University School of Medicine, 1-5-8, Hatanodai, Shinagawa-ku, Tokyo, 142-8666, Japan.
| | - Miho Kimachi
- Department of Healthcare Epidemiology, School of Public Health in the Graduate School of Medicine, Koto University, Kyoto, Japan
- Institute for Health Outcomes and Process Evaluation Research (iHope International), Kyoto, Japan
| | - Noriaki Kurita
- Department of Clinical Epidemiology, Graduate School of Medicine, Fukushima Medical University, Fukushima, Japan
- Department of Innovative Research and Education for Clinicians and Trainees (DiRECT), Fukushima Medical University Hospital, Fukushima, Japan
- Center for Innovative Research for Communities and Clinical Excellence (CiRC2LE), Fukushima Medical University, Fukushima, Japan
| | - Nobuhiko Joki
- Division of Nephrology, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Masaomi Nangaku
- Division of Nephrology and Endocrinology, The University of Tokyo, Tokyo, Japan
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12
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Schreckenberger ZJ, Wenceslau CF, Joe B, McCarthy CG. Mitophagy in Hypertension-Associated Premature Vascular Aging. Am J Hypertens 2020; 33:804-812. [PMID: 32533696 PMCID: PMC7481986 DOI: 10.1093/ajh/hpaa058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/01/2020] [Accepted: 04/02/2020] [Indexed: 12/18/2022] Open
Abstract
Hypertension has been described as a condition of premature vascular aging, relative to actual chronological age. In fact, many factors that contribute to the deterioration of vascular function as we age are accelerated and exacerbated in hypertension. Nonetheless, the precise mechanisms that underlie the aged phenotype of arteries from hypertensive patients and animals remain elusive. Classically, the aged phenotype is the buildup of cellular debris and dysfunctional organelles. One means by which this can occur is insufficient degradation and cellular recycling. Mitophagy is the selective catabolism of damaged mitochondria. Mitochondria are organelles that contribute importantly to the determination of cellular age via their production of reactive oxygen species (ROS; Harman's free radical theory of aging). Therefore, the accumulation of dysfunctional and ROS-producing mitochondria could contribute to the acceleration of vascular age in hypertension. This review will address and critically evaluate the current literature on mitophagy in vascular physiology and hypertension.
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Affiliation(s)
- Zachary J Schreckenberger
- Center for Hypertension & Personalized Medicine, Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
| | - Camilla F Wenceslau
- Center for Hypertension & Personalized Medicine, Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
| | - Bina Joe
- Center for Hypertension & Personalized Medicine, Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
| | - Cameron G McCarthy
- Center for Hypertension & Personalized Medicine, Department of Physiology & Pharmacology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio, USA
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13
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Abstract
Stroke is one of the leading causes of morbidity and mortality worldwide. Intravenous tissue plasminogen activator and mechanical thrombectomy comprise the two major treatments for acute ischemic stroke. Tissue plasminogen activator has been used for more than two decades and guidelines for hemodynamic management following tissue plasminogen activator administration are well established. However, mechanical thrombectomy is a relatively newer therapy and there is a paucity of evidence regarding hemodynamic management following large vessel occlusion strokes. The important tenets guiding the pathophysiology of large vessel occlusion strokes include understanding of cerebral autoregulation, collateral circulation, and blood pressure variability. In this narrative review, we discuss the current American Heart Association-American Stroke Association guidelines for the early management of acute ischemic stroke during different phases of the illness, encountered at different sections of a hospital including the emergency room, the neuro-interventional suite, and the intensive care unit. There is emerging evidence with regard to post-recanalization blood pressure management following large vessel occlusion strokes. Future research directions will include rea-ltime blood pressure variability assessments, identifying the extent of impaired autoregulation, and providing guidelines related to range and personalized blood pressure trajectories for patients following large vessel occlusion strokes.
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Affiliation(s)
- Saurav Das
- Department of Neurology, Louisville University School of Medicine, Louisville, Kentucky, USA
| | - Kevin Denny John
- University of Louisville, School of Medicine, Louisville, Kentucky, USA
| | - Satheesh Kumar Bokka
- Department of Neurology, Louisville University School of Medicine, Louisville, Kentucky, USA
| | - Kerri Remmel
- Department of Anesthesiology and Perioperative Medicine, Stroke ICU, Louisville University Hospital, Louisville, Kentucky, USA
- Comprehensive Stroke Clinical Research Program, University of Louisville, Louisville, Kentucky, USA
| | - Ozan Akça
- Department of Anesthesiology and Perioperative Medicine, Stroke ICU, Louisville University Hospital, Louisville, Kentucky, USA
- Comprehensive Stroke Clinical Research Program, University of Louisville, Louisville, Kentucky, USA
- * Address for Correspondence: Comprehensive Stroke Clinical Research Program, University of Louisville, Louisville, Kentucky, USA Phone: +90 502 852 58 51 E-mail:
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14
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Lambert O, Couchoud C, Metzger M, Choukroun G, Jacquelinet C, Mercadal L. Effects of the dialysate calcium concentrations and mineral bone disease treatments on mortality in The French Renal Epidemiology and Information Network (REIN) registry. PLoS One 2020; 15:e0235135. [PMID: 32628733 PMCID: PMC7337343 DOI: 10.1371/journal.pone.0235135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 06/09/2020] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND In patients on hemodialysis (HD), the various chemical elements in the dialysate may influence survival rates. In particular, calcium modifies mineral and bone metabolism and the vascular calcification rate. We studied the influence of the dialysate calcium concentration and the treatments prescribed for mineral bone disease (MBD) on survival. METHODS All patients in REIN having initiated HD from 2010 to 2013 were classified according to their exposure to the different dialysate calcium concentrations in their dialysis unit. Data on the individual patients' treatments for MBD were extracted from the French national health database. Cox proportional hazard models were used to estimate mortality hazard ratios (HR) associated with time-dependent exposure to dialysate calcium concentrations and MBD therapies, adjusted for comorbidities, laboratory and technical data. RESULTS Dialysate calcium concentration of 1.5 mmol/L was used by 81% of the dialysis centers in 2010 and in 83% in 2014. Most centers were using several formulas in up to 78% for 3 formulas in 2010 to 86% in 2014. In full adjusted Cox survival analyses, the percentage of calcium >1.5 mmol/L and <1.5 mmol/l by center and the number of formula used per center were not associated with survival. Depending on the daily dose used, the MBD therapies were associated with survival improvement for calcium, native vitamin D, active vitamin D, sevelamer, lanthanum and cinacalcet in the second and third tertiles of dose. CONCLUSION No influence of the dialysate calcium concentration was evidenced on survival whereas all MBD therapies were associated with a survival improvement depending on the daily dose used.
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Affiliation(s)
- Oriane Lambert
- CESP, Centre for Research in Epidemiology and Population Health, Univ Paris-Saclay, Univ Paris Sud, UVSQ, INSERM UMRS, Villejuif, France
| | | | - Marie Metzger
- CESP, Centre for Research in Epidemiology and Population Health, Univ Paris-Saclay, Univ Paris Sud, UVSQ, INSERM UMRS, Villejuif, France
| | - Gabriel Choukroun
- Nephrology, Dialysis & Transplantation Department, CHU Amiens, INSERM UMR, Jules Verne University of Picardie, Amiens, France
| | - Christian Jacquelinet
- CESP, Centre for Research in Epidemiology and Population Health, Univ Paris-Saclay, Univ Paris Sud, UVSQ, INSERM UMRS, Villejuif, France
| | - Lucile Mercadal
- CESP, Centre for Research in Epidemiology and Population Health, Univ Paris-Saclay, Univ Paris Sud, UVSQ, INSERM UMRS, Villejuif, France
- Nephrology Department, Pitié-Salpêtrière Hospital, AP-HP, Paris, France
- * E-mail:
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15
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Shim H, Lee J, Kim S. BOLD fMRI and hemodynamic responses to somatosensory stimulation in anesthetized mice: spontaneous breathing vs. mechanical ventilation. NMR Biomed 2020; 33:e4311. [PMID: 32297409 PMCID: PMC7317444 DOI: 10.1002/nbm.4311] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/26/2020] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
Mouse functional MRI (fMRI) has been of great interest due to the abundance of transgenic models. Due to a mouse's small size, spontaneous breathing has often been used. Because the vascular physiology affecting fMRI might not be controlled normally, its effects on functional responses were investigated with optical intrinsic signal (OIS) imaging and 9.4 T BOLD fMRI. Three conditions were tested in C57BL/6 mice: spontaneous breathing under ketamine and xylazine anesthesia (KX), mechanical ventilation under KX, and mechanical ventilation under isoflurane. Spontaneous breathing under KX induced an average pCO2 of 83 mmHg, whereas a mechanical ventilation condition achieved a pCO2 of 37-41 mmHg within a physiological range. The baseline diameter of arterial and venous vessels was only 7%-9% larger with spontaneous breathing than with mechanical ventilation under KX, but it was much smaller than that in normocapnic isoflurane-anesthetized mice. Three major functional studies were performed. First, CBV-weighted OIS and arterial dilations to 4-second forepaw stimulation were rapid and larger at normocapnia than hypercapnia under KX, but very small under isoflurane. Second, CBV-weighted OIS and arterial dilations by vasodilator acetazolamide were measured for investigating vascular reactivity and were larger in the normocapnic condition than in the hypercapnic condition under KX. Third, evoked OIS and BOLD fMRI responses in the contralateral mouse somatosensory cortex to 20-second forepaw stimulation were faster and larger in the mechanical ventilation than spontaneous breathing. BOLD fMRI peaked at the end of the 20-second stimulation under hypercapnic spontaneous breathing, and at ~9 seconds under mechanical ventilation. The peak amplitude of BOLD fMRI was 2.2% at hypercapnia and ~3.4% at normocapnia. Overall, spontaneous breathing induces sluggish reduced hemodynamic and fMRI responses, but it is still viable for KX anesthesia due to its simplicity, noninvasiveness, and well-localized BOLD activity in the somatosensory cortex.
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Affiliation(s)
- Hyun‐Ji Shim
- Center for Neuroscience Imaging Research (CNIR)Institute for Basic Science (IBS)Suwon16419Republic of Korea
- Department of Health Sciences and Technology, SAIHSTSungkyunkwan UniversitySeoul06355Republic of Korea
| | - Joonyeol Lee
- Center for Neuroscience Imaging Research (CNIR)Institute for Basic Science (IBS)Suwon16419Republic of Korea
- Department of Biomedical EngineeringSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Seong‐Gi Kim
- Center for Neuroscience Imaging Research (CNIR)Institute for Basic Science (IBS)Suwon16419Republic of Korea
- Department of Health Sciences and Technology, SAIHSTSungkyunkwan UniversitySeoul06355Republic of Korea
- Department of Biomedical EngineeringSungkyunkwan UniversitySuwon16419Republic of Korea
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16
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Six I, Flissi N, Lenglet G, Louvet L, Kamel S, Gallet M, Massy ZA, Liabeuf S. Uremic Toxins and Vascular Dysfunction. Toxins (Basel) 2020; 12:toxins12060404. [PMID: 32570781 PMCID: PMC7354618 DOI: 10.3390/toxins12060404] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/15/2020] [Accepted: 06/17/2020] [Indexed: 02/07/2023] Open
Abstract
Vascular dysfunction is an essential element found in many cardiovascular pathologies and in pathologies that have a cardiovascular impact such as chronic kidney disease (CKD). Alteration of vasomotricity is due to an imbalance between the production of relaxing and contracting factors. In addition to becoming a determining factor in pathophysiological alterations, vascular dysfunction constitutes the first step in the development of atherosclerosis plaques or vascular calcifications. In patients with CKD, alteration of vasomotricity tends to emerge as being a new, less conventional, risk factor. CKD is characterized by the accumulation of uremic toxins (UTs) such as phosphate, para-cresyl sulfate, indoxyl sulfate, and FGF23 and, consequently, the deleterious role of UTs on vascular dysfunction has been explored. This accumulation of UTs is associated with systemic alterations including inflammation, oxidative stress, and the decrease of nitric oxide production. The present review proposes to summarize our current knowledge of the mechanisms by which UTs induce vascular dysfunction.
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Affiliation(s)
- Isabelle Six
- UR 7517 UPJV, Pathophysiological Mechanisms and Consequences of Cardiovascular Calcifications (MP3CV), Picardie Jules Verne University, 80025 Amiens, France; (N.F.); (G.L.); (L.L.); (S.K.); (M.G.); (S.L.)
- Correspondence: ; Tel./Fax: +03-22-82-54-25
| | - Nadia Flissi
- UR 7517 UPJV, Pathophysiological Mechanisms and Consequences of Cardiovascular Calcifications (MP3CV), Picardie Jules Verne University, 80025 Amiens, France; (N.F.); (G.L.); (L.L.); (S.K.); (M.G.); (S.L.)
| | - Gaëlle Lenglet
- UR 7517 UPJV, Pathophysiological Mechanisms and Consequences of Cardiovascular Calcifications (MP3CV), Picardie Jules Verne University, 80025 Amiens, France; (N.F.); (G.L.); (L.L.); (S.K.); (M.G.); (S.L.)
| | - Loïc Louvet
- UR 7517 UPJV, Pathophysiological Mechanisms and Consequences of Cardiovascular Calcifications (MP3CV), Picardie Jules Verne University, 80025 Amiens, France; (N.F.); (G.L.); (L.L.); (S.K.); (M.G.); (S.L.)
| | - Said Kamel
- UR 7517 UPJV, Pathophysiological Mechanisms and Consequences of Cardiovascular Calcifications (MP3CV), Picardie Jules Verne University, 80025 Amiens, France; (N.F.); (G.L.); (L.L.); (S.K.); (M.G.); (S.L.)
- Amiens-Picardie University Hospital, Human Biology Center, 80054 Amiens, France
| | - Marlène Gallet
- UR 7517 UPJV, Pathophysiological Mechanisms and Consequences of Cardiovascular Calcifications (MP3CV), Picardie Jules Verne University, 80025 Amiens, France; (N.F.); (G.L.); (L.L.); (S.K.); (M.G.); (S.L.)
| | - Ziad A. Massy
- Service de Néphrologie et Dialyse, Assistance Publique—Hôpitaux de Paris (APHP), Hôpital Universitaire Ambroise Paré, 92100 Boulogne Billancourt, France;
- INSERM U1018, Equipe 5, CESP (Centre de Recherche en Épidémiologie et Santé des Populations), Université Paris Saclay et Université Versailles Saint Quentin en Yvelines, 94800 Villejuif, France
| | - Sophie Liabeuf
- UR 7517 UPJV, Pathophysiological Mechanisms and Consequences of Cardiovascular Calcifications (MP3CV), Picardie Jules Verne University, 80025 Amiens, France; (N.F.); (G.L.); (L.L.); (S.K.); (M.G.); (S.L.)
- Pharmacology Department, Amiens University Hospital, 80025 Amiens, France
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17
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Okonkwo UA, Chen L, Ma D, Haywood VA, Barakat M, Urao N, DiPietro LA. Compromised angiogenesis and vascular Integrity in impaired diabetic wound healing. PLoS One 2020; 15:e0231962. [PMID: 32324828 PMCID: PMC7179900 DOI: 10.1371/journal.pone.0231962] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 04/03/2020] [Indexed: 12/19/2022] Open
Abstract
Vascular deficits are a fundamental contributing factor of diabetes-associated diseases. Although previous studies have demonstrated that the pro-angiogenic phase of wound healing is blunted in diabetes, a comprehensive understanding of the mechanisms that regulate skin revascularization and capillary stabilization in diabetic wounds is lacking. Using a mouse model of diabetic wound healing, we performed microCT analysis of the 3-dimensional architecture of the capillary bed. As compared to wild type, vessel surface area, branch junction number, total vessel length, and total branch number were significantly decreased in wounds of diabetic mice as compared to WT mice. Diabetic mouse wounds also had significantly increased capillary permeability and decreased pericyte coverage of capillaries. Diabetic wounds exhibited significant perturbations in the expression of factors that affect vascular regrowth, maturation and stability. Specifically, the expression of VEGF-A, Sprouty2, PEDF, LRP6, Thrombospondin 1, CXCL10, CXCR3, PDGFR-β, HB-EGF, EGFR, TGF-β1, Semaphorin3a, Neuropilin 1, angiopoietin 2, NG2, and RGS5 were down-regulated in diabetic wounds. Together, these studies provide novel information about the complexity of the perturbation of angiogenesis in diabetic wounds. Targeting factors responsible for wound resolution and vascular pruning, as well those that affect pericyte recruitment, maturation, and stability may have the potential to improve diabetic skin wound healing.
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Affiliation(s)
- Uzoagu A. Okonkwo
- Center for Wound Healing and Tissue Regeneration, University of Illinois at Chicago, Chicago, IL, United States of America
| | - Lin Chen
- Center for Wound Healing and Tissue Regeneration, University of Illinois at Chicago, Chicago, IL, United States of America
| | - Da Ma
- Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Guanghua School of Stomatology, SunYat-sen University, Guangzhou, Guangdong, China
| | - Veronica A. Haywood
- Center for Wound Healing and Tissue Regeneration, University of Illinois at Chicago, Chicago, IL, United States of America
| | - May Barakat
- Center for Wound Healing and Tissue Regeneration, University of Illinois at Chicago, Chicago, IL, United States of America
| | - Norifumi Urao
- Department of Pharmacology, Upstate Medical University, Syracuse, NY, United States of America
| | - Luisa A. DiPietro
- Center for Wound Healing and Tissue Regeneration, University of Illinois at Chicago, Chicago, IL, United States of America
- * E-mail:
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18
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Atchison L, Abutaleb NO, Snyder-Mounts E, Gete Y, Ladha A, Ribar T, Cao K, Truskey GA. iPSC-Derived Endothelial Cells Affect Vascular Function in a Tissue-Engineered Blood Vessel Model of Hutchinson-Gilford Progeria Syndrome. Stem Cell Reports 2020; 14:325-337. [PMID: 32032552 PMCID: PMC7013250 DOI: 10.1016/j.stemcr.2020.01.005] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 01/08/2020] [Accepted: 01/10/2020] [Indexed: 12/11/2022] Open
Abstract
Hutchinson-Gilford progeria syndrome (HGPS) is a rare disorder caused by a point mutation in the Lamin A gene that produces the protein progerin. Progerin toxicity leads to accelerated aging and death from cardiovascular disease. To elucidate the effects of progerin on endothelial cells, we prepared tissue-engineered blood vessels (viTEBVs) using induced pluripotent stem cell-derived smooth muscle cells (viSMCs) and endothelial cells (viECs) from HGPS patients. HGPS viECs aligned with flow but exhibited reduced flow-responsive gene expression and altered NOS3 levels. Relative to viTEBVs with healthy cells, HGPS viTEBVs showed reduced function and exhibited markers of cardiovascular disease associated with endothelium. HGPS viTEBVs exhibited a reduction in both vasoconstriction and vasodilation. Preparing viTEBVs with HGPS viECs and healthy viSMCs only reduced vasodilation. Furthermore, HGPS viECs produced VCAM1 and E-selectin protein in TEBVs with healthy or HGPS viSMCs. In summary, the viTEBV model has identified a role of the endothelium in HGPS.
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Affiliation(s)
- Leigh Atchison
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Nadia O Abutaleb
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | | | - Yantenew Gete
- Department of Cell Biology and Molecular Genetics at University of Maryland, College Park, MD, USA
| | - Alim Ladha
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
| | - Thomas Ribar
- Duke iPSC Shared Resource Facility at Duke University, Durham, NC, USA
| | - Kan Cao
- Department of Cell Biology and Molecular Genetics at University of Maryland, College Park, MD, USA
| | - George A Truskey
- Department of Biomedical Engineering, Duke University, Durham, NC, USA.
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Llévenes P, Rodrigues-Díez R, Cros-Brunsó L, Prieto MI, Casaní L, Balfagón G, Blanco-Rivero J. Beneficial Effect of a Multistrain Synbiotic Prodefen® Plus on the Systemic and Vascular Alterations Associated with Metabolic Syndrome in Rats: The Role of the Neuronal Nitric Oxide Synthase and Protein Kinase A. Nutrients 2020; 12:E117. [PMID: 31906276 PMCID: PMC7019517 DOI: 10.3390/nu12010117] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 12/16/2019] [Accepted: 12/18/2019] [Indexed: 02/07/2023] Open
Abstract
A high fat diet (HFD) intake is crucial for the development and progression of metabolic syndrome (MtS). Increasing evidence links gut dysbiosis with the metabolic and vascular alterations associated with MtS. Here we studied the use of a combination of various probiotic strains together with a prebiotic (synbiotic) in a commercially available Prodefen® Plus. MtS was induced by HFD (45%) in male Wistar rats. Half of the MtS animals received Prodefen® Plus for 4 weeks. At 12 weeks, we observed an increase in body weight, together with the presence of insulin resistance, liver steatosis, hypertriglyceridemia and hypertension in MtS rats. Prodefen® Plus supplementation did not affect the body weight gain but ameliorated all the MtS-related symptoms. Moreover, the hypertension induced by HFD is caused by a diminished both nitric oxide (NO) functional role and release probably due to a diminished neuronal nitric oxide synthase (nNOS) activation by protein kinase A (PKA) pathway. Prodefen® Plus supplementation for 4 weeks recovered the NO function and release and the systolic blood pressure was returned to normotensive values as a result. Overall, supplementation with Prodefen® Plus could be considered an interesting non-pharmacological approach in MtS.
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Affiliation(s)
- Pablo Llévenes
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (P.L.); (L.C.-B.); (G.B.)
| | - Raquel Rodrigues-Díez
- Department of Pharmacology and Therapeutics, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain;
- Center for Biomedical Research Network (CIBER) in Cardiovascular Diseases, Calle de Melchor Fernández Almagro 3, 28029 Madrid, Spain
- Research Institute University Hospital la Paz (IdIPaz), Calle de Pedro Rico 6, 28029 Madrid, Spain;
| | - Laia Cros-Brunsó
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (P.L.); (L.C.-B.); (G.B.)
| | - Mᵃ Isabel Prieto
- Research Institute University Hospital la Paz (IdIPaz), Calle de Pedro Rico 6, 28029 Madrid, Spain;
- Department of General and Digestive Surgery, Hospital Universitario la Paz, Paseo de la Castellana 261, 28046 Madrid, Spain
| | - Laura Casaní
- Research Institute of Santa Creu i Sant Pau Hospital, Carrer de Sant Quintí 77–79, 08041 Barcelona, Spain;
| | - Gloria Balfagón
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (P.L.); (L.C.-B.); (G.B.)
- Center for Biomedical Research Network (CIBER) in Cardiovascular Diseases, Calle de Melchor Fernández Almagro 3, 28029 Madrid, Spain
- Research Institute University Hospital la Paz (IdIPaz), Calle de Pedro Rico 6, 28029 Madrid, Spain;
| | - Javier Blanco-Rivero
- Department of Physiology, School of Medicine, Universidad Autónoma de Madrid, Calle de Arzobispo Morcillo 4, 28029 Madrid, Spain; (P.L.); (L.C.-B.); (G.B.)
- Center for Biomedical Research Network (CIBER) in Cardiovascular Diseases, Calle de Melchor Fernández Almagro 3, 28029 Madrid, Spain
- Research Institute University Hospital la Paz (IdIPaz), Calle de Pedro Rico 6, 28029 Madrid, Spain;
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20
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Han F, Hou N, Liu Y, Huang N, Pan R, Zhang X, Mao E, Sun X. Liraglutide improves vascular dysfunction by regulating a cAMP-independent PKA-AMPK pathway in perivascular adipose tissue in obese mice. Biomed Pharmacother 2019; 120:109537. [PMID: 31605951 DOI: 10.1016/j.biopha.2019.109537] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 10/01/2019] [Accepted: 10/02/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Perivascular adipose tissue (PVAT) attenuates its anti-contractile effect through an endothelial-dependent mechanism that aggravates endothelial dysfunction in obesity. The present study was conducted to explore whether liraglutide could improve vascular dysfunction, including the anti-contractile effect of PVAT and endothelial function, by modulating PVAT-related signaling pathways in obesity. METHODS C57BL/6 mice were fed a normal-chow diet or a high-fat diet (HFD) with or without liraglutide treatment. Vascular function of the thoracic aorta with or without PVAT were measured. Protein levels of components of the PKA-AMPK-PGC1α and antioxidant signaling pathway in PVAT were determined by western blotting. Brown adipose tissue-related gene in PVAT was measured by qRT-PCR. RESULTS Metabolic profiles of HFD-fed mice were improved after treatment with liraglutide. Liraglutide improved PVAT-induced anti-contractile capability and PVAT-induced endothelial dysfunction in HFD-fed mice both in vivo and ex vivo. However, blocking PKA, or AMPK, but not cAMP, attenuated these beneficial effects of liraglutide. Treating HFD-fed mice with liraglutide activated the AMPK/eNOS pathway and induced browning-related gene expression. Moreover, liraglutide increased antioxidant capability. The protective effects were related to activation of a cAMP-independent PKA-AMPK pathway, as demonstrated by western blot and PCR. CONCLUSIONS Liraglutide improved vascular dysfunction by modulating a cAMP-independent PKA-AMPK pathway in PVAT in HFD-induced obese mice. The findings provide a novel mechanism for the cardiovascular protection of liraglutide by modulating PVAT function in obesity.
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Affiliation(s)
- Fang Han
- Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Ningning Hou
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Yongping Liu
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Na Huang
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Ruiyan Pan
- Department of Pharmacology, Weifang Medical University, Weifang, China
| | - Xing Zhang
- Key Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin, China
| | - Enwen Mao
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Xiaodong Sun
- Department of Endocrinology, Affiliated Hospital of Weifang Medical University, Weifang, China.
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Yokota H, Yoneyama T, Watanabe T, Sasagawa Y, Nakada M. Method for the Detection of Tumor Blood Vessels in Neurosurgery Using a Gripping Force Feedback System. Sensors (Basel) 2019; 19:E5157. [PMID: 31775316 PMCID: PMC6929095 DOI: 10.3390/s19235157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/21/2019] [Accepted: 11/22/2019] [Indexed: 01/31/2023]
Abstract
Avoiding unnecessary bleeding during neuroendoscopic surgeries is crucial because achieving hemostasis in a narrow operating space is challenging. However, when the location of a blood vessel in a tumor cannot be visually confirmed, unintentional damage to the vessel and subsequent bleeding may occur. This study proposes a method for tumor blood vessel detection using a master-slave surgical robot system equipped with a force sensor in the slave gripper. Using this method, blood pulsation inside a tumor was detected, displayed as a gripping force wave, via the slave force sensor. The characteristics of gripping force due to blood pulsation were extracted by measuring the fluctuation of the force in real time. The presence or absence of blood vessels was determined on the basis of cross-correlation coefficients between the gripping force fluctuation waveform due to blood pulsation and model fluctuation waveform. Experimental validation using two types of simulated tumors (soft: E = 6 kPa; hard: E = 38 kPa) and a simulated blood vessel (E = 1.9 MPa, radius = 0.5 mm, thickness = 0.1 mm) revealed that the presence of blood vessels could be detected while gripping at a constant angle and during transient gripping.
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Affiliation(s)
- Hiroki Yokota
- Institute of Science and Engineering, Kanazawa University, Kanazawa 9201192, Japan; (T.Y.); (T.W.)
| | - Takeshi Yoneyama
- Institute of Science and Engineering, Kanazawa University, Kanazawa 9201192, Japan; (T.Y.); (T.W.)
| | - Tetsuyou Watanabe
- Institute of Science and Engineering, Kanazawa University, Kanazawa 9201192, Japan; (T.Y.); (T.W.)
| | - Yasuo Sasagawa
- Faculty of Medicine, Kanazawa University, Kanazawa 9200934, Japan; (Y.S.); (M.N.)
| | - Mitsutoshi Nakada
- Faculty of Medicine, Kanazawa University, Kanazawa 9200934, Japan; (Y.S.); (M.N.)
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22
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Puñal VM, Paisley CE, Brecha FS, Lee MA, Perelli RM, Wang J, O’Koren EG, Ackley CR, Saban DR, Reese BE, Kay JN. Large-scale death of retinal astrocytes during normal development is non-apoptotic and implemented by microglia. PLoS Biol 2019; 17:e3000492. [PMID: 31626642 PMCID: PMC6821132 DOI: 10.1371/journal.pbio.3000492] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 10/30/2019] [Accepted: 09/26/2019] [Indexed: 12/28/2022] Open
Abstract
Naturally occurring cell death is a fundamental developmental mechanism for regulating cell numbers and sculpting developing organs. This is particularly true in the nervous system, where large numbers of neurons and oligodendrocytes are eliminated via apoptosis during normal development. Given the profound impact of death upon these two major cell populations, it is surprising that developmental death of another major cell type—the astrocyte—has rarely been studied. It is presently unclear whether astrocytes are subject to significant developmental death, and if so, how it occurs. Here, we address these questions using mouse retinal astrocytes as our model system. We show that the total number of retinal astrocytes declines by over 3-fold during a death period spanning postnatal days 5–14. Surprisingly, these astrocytes do not die by apoptosis, the canonical mechanism underlying the vast majority of developmental cell death. Instead, we find that microglia engulf astrocytes during the death period to promote their developmental removal. Genetic ablation of microglia inhibits astrocyte death, leading to a larger astrocyte population size at the end of the death period. However, astrocyte death is not completely blocked in the absence of microglia, apparently due to the ability of astrocytes to engulf each other. Nevertheless, mice lacking microglia showed significant anatomical changes to the retinal astrocyte network, with functional consequences for the astrocyte-associated vasculature leading to retinal hemorrhage. These results establish a novel modality for naturally occurring cell death and demonstrate its importance for the formation and integrity of the retinal gliovascular network. A study of the neonatal mouse retina shows that developmental cell death of retinal astrocytes does not occur by apoptosis but is instead mediated by microglia, which kill and engulf astrocytes to effect their developmental removal.
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Affiliation(s)
- Vanessa M. Puñal
- Department of Neurobiology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Caitlin E. Paisley
- Department of Neurobiology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Federica S. Brecha
- Department of Neurobiology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Monica A. Lee
- Department of Neurobiology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Robin M. Perelli
- Department of Neurobiology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Jingjing Wang
- Department of Neurobiology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Emily G. O’Koren
- Department of Ophthalmology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Caroline R. Ackley
- Neuroscience Research Institute, University of California, Santa Barbara, Santa Barbara, California, United States of America
- Department of Cellular, Molecular and Developmental Biology, University of California, Santa Barbara, Santa Barbara, California, United States of America
| | - Daniel R. Saban
- Department of Ophthalmology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Immunology, Duke University School of Medicine, Durham, North Carolina, United States of America
| | - Benjamin E. Reese
- Neuroscience Research Institute, University of California, Santa Barbara, Santa Barbara, California, United States of America
- Department of Psychological and Brain Sciences, University of California, Santa Barbara, Santa Barbara, California, United States of America
| | - Jeremy N. Kay
- Department of Neurobiology, Duke University School of Medicine, Durham, North Carolina, United States of America
- Department of Ophthalmology, Duke University School of Medicine, Durham, North Carolina, United States of America
- * E-mail:
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23
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Königstein K, Infanger D, Jacobsen Bertelsen R, Johannessen A, Waje-Andreassen U, Schmidt-Trucksäss A, Svanes C, Dratva J. Is atopic sensitization associated with indicators of early vascular ageing in adolescents? PLoS One 2019; 14:e0220198. [PMID: 31415591 PMCID: PMC6695156 DOI: 10.1371/journal.pone.0220198] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 07/10/2019] [Indexed: 12/13/2022] Open
Abstract
Background Chronic systemic inflammation accelerates early vascular ageing. Atopic sensitization and allergic diseases may involve increased inflammatory activity. This study aimed to assess whether atopic sensitization and allergic diseases were associated with altered vascular biomarkers in Norwegian adolescents. Methods Distensibility coefficient of the common carotid arteries, carotid intima-media thickness and atopic sensitization (serum total and specific IgEs) were assessed in 95 Norwegian adolescents, who participated in the RHINESSA generation study. Symptoms of allergic disease were assessed by an interviewer-led questionnaire. Results Atopic sensitization was found in 33 (34.7%) of the adolescents. Symptomatic allergic disease was found in 11 (33.3%) of those with atopic sensitization. Distensibility coefficient of the common carotid arteries appeared to be lower in participants with atopic sensitization than in those without (46.99±8.07*10−3/kPa versus 51.50±11.46*10−3/kPa; p>0.05), while carotid intima-media thickness did not differ between these groups (0.50±0.04mm versus 0.50±0.04mm; p>0.05). Crude, as well as age- and sex-adjusted multiple regression, revealed no significant association, neither of atopic sensitization nor of allergic disease, with distensibility coefficient of the common carotid arteries and carotid intima-media thickness. Conclusions Our results do not support the assumption of an adverse impact of atopic sensitization and/or allergic disease on distensibility coefficient of the common carotid arteries and carotid intima-media thickness in Norwegian adolescents. Further research is necessary to study whether the clinical severity of allergic diseases might be more important than the status of allergic disease or atopic sensitization.
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Affiliation(s)
- Karsten Königstein
- Department of Sport, Exercise and Health, Division Sports and Exercise Medicine, University of Basel, Basel, Switzerland
- * E-mail:
| | - Denis Infanger
- Department of Sport, Exercise and Health, Division Sports and Exercise Medicine, University of Basel, Basel, Switzerland
| | - Randi Jacobsen Bertelsen
- Department of Clinical Science, University of Bergen, Bergen, Norway
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
| | - Ane Johannessen
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
- Centre for International Health, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | | | - Arno Schmidt-Trucksäss
- Department of Sport, Exercise and Health, Division Sports and Exercise Medicine, University of Basel, Basel, Switzerland
| | - Cecilie Svanes
- Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway
- Centre for International Health, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | - Julia Dratva
- Medical Faculty, University of Basel, Basel, Switzerland
- ZHAW, School of Health Professions, Winterthur, Switzerland
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Abstract
PURPOSE OF REVIEW Acute phase serum amyloid A (SAA) is persistently elevated in chronic inflammatory conditions, and elevated levels predict cardiovascular risk in humans. More recently, murine studies have demonstrated that over-expression of SAA increases and deficiency/suppression of SAA attenuates atherosclerosis. Thus, beyond being a biomarker, SAA appears to play a causal role in atherogenesis. The purpose of this review is to summarize the data supporting SAA as a key player in atherosclerosis development. RECENT FINDINGS A number of pro-inflammatory and pro-atherogenic activities have been ascribed to SAA. However, the literature is conflicted, as recombinant SAA, and/or lipid-free SAA, used in many of the earlier studies, do not reflect the activity of native human or murine SAA, which exists largely lipid-associated. Recent literatures demonstrate that SAA activates the NLRP3 inflammasome, alters vascular function, affects HDL function, and increases thrombosis. Importantly, SAA activity appears to be regulated by its lipid association, and HDL may serve to sequester and limit SAA activity. SUMMARY SAA has many pro-inflammatory and pro-atherogenic activities, is clearly demonstrated to affect atherosclerosis development, and may be a candidate target for clinical trials in cardiovascular diseases.
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Affiliation(s)
- Preetha Shridas
- Department of Internal Medicine
- Saha Cardiovascular Research Center
- Barnstable Brown Diabetes Center and University of Kentucky
| | - Lisa R Tannock
- Department of Internal Medicine
- Saha Cardiovascular Research Center
- Barnstable Brown Diabetes Center and University of Kentucky
- Veterans Affairs Lexington, Lexington, Kentucky, USA
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25
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Sachdeva R, Nightingale TE, Krassioukov AV. The Blood Pressure Pendulum following Spinal Cord Injury: Implications for Vascular Cognitive Impairment. Int J Mol Sci 2019; 20:ijms20102464. [PMID: 31109053 PMCID: PMC6567094 DOI: 10.3390/ijms20102464] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/15/2019] [Accepted: 05/16/2019] [Indexed: 12/15/2022] Open
Abstract
Cognitive impairment following spinal cord injury (SCI) has received considerable attention in recent years. Among the various systemic effects of SCI that contribute towards cognitive decline in this population, cardiovascular dysfunction is arguably one of the most significant. The majority of individuals with a cervical or upper-thoracic SCI commonly experience conditions called orthostatic hypotension and autonomic dysreflexia, which are characterized by dangerous fluctuations in systemic blood pressure (BP). Herein, we review the potential impact of extreme BP lability on vascular cognitive impairment (VCI) in individuals with SCI. Albeit preliminary in the SCI population, there is convincing evidence that chronic hypotension and hypertension in able-bodied individuals results in devastating impairments in cerebrovascular health, leading to VCI. We discuss the pertinent literature, and while drawing mechanistic comparisons between able-bodied cohorts and individuals with SCI, we emphasize the need for additional research to elucidate the mechanisms of cognitive impairment specific to the SCI population. Lastly, we highlight the current and potential future therapies to manage and treat BP instability, thereby possibly mitigating VCI in the SCI population.
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Affiliation(s)
- Rahul Sachdeva
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
- Department of Medicine, Division of Physical Medicine and Rehabilitation, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
| | - Tom E Nightingale
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
- Department of Medicine, Division of Physical Medicine and Rehabilitation, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
| | - Andrei V Krassioukov
- International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
- Department of Medicine, Division of Physical Medicine and Rehabilitation, University of British Columbia, Vancouver, BC V5Z 1M9, Canada.
- GF Strong Rehabilitation Center, Vancouver Coastal Health, Vancouver, BC V5Z 2G9, Canada.
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26
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Abstract
Perivascular adipose tissue (PVAT) refers to the local aggregate of adipose tissue surrounding the vascular tree, exhibiting phenotypes from white to brown and beige adipocytes. Although PVAT has long been regarded as simply a structural unit providing mechanical support to vasculature, it is now gaining reputation as an integral endocrine/paracrine component, in addition to the well-established modulator endothelium, in regulating vascular tone. Since the discovery of anti-contractile effect of PVAT in 1991, the use of multiple rodent models of reduced amounts of PVAT has revealed its regulatory role in vascular remodeling and cardiovascular implications, including atherosclerosis. PVAT does not only release PVAT-derived relaxing factors (PVRFs) to activate multiple subsets of endothelial and vascular smooth muscle potassium channels and anti-inflammatory signals in the vasculature, but it does also provide an interface for neuron-adipocyte interactions in the vascular wall to regulate arterial vascular tone. In this review, we outline our current understanding towards PVAT and attempt to provide hints about future studies that can sharpen the therapeutic potential of PVAT against cardiovascular diseases and their complications.
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Affiliation(s)
- Chak Kwong Cheng
- School of Biomedical Sciences, Chinese University of Hong Kong, Hong Kong, SAR, China
- Institute of Vascular Medicine, Shenzhen Research Institute and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Hong Kong, SAR, China
| | - Hamidah Abu Bakar
- Health Sciences Department, Universiti Selangor, 40000, Shah Alam, Selangor, Malaysia
| | - Maik Gollasch
- Experimental and Clinical Research Center (ECRC)-a joint cooperation between the Charité-University Medicine Berlin and the Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), 13125, Berlin, Germany.
- Medical Clinic for Nephrology and Internal Intensive Care, Charité Campus Virchow Klinikum, Augustenburger Platz 1, 13353, Berlin, Germany.
| | - Yu Huang
- School of Biomedical Sciences, Chinese University of Hong Kong, Hong Kong, SAR, China.
- Institute of Vascular Medicine, Shenzhen Research Institute and Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong, Hong Kong, SAR, China.
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27
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Monteiro Rodrigues L, Nazaré Silva H, Ferreira H, Gadeau AP. Characterizing Vascular Dysfunction in Genetically Modified Mice through the Hyperoxia Model. Int J Mol Sci 2019; 20:ijms20092178. [PMID: 31052504 PMCID: PMC6539112 DOI: 10.3390/ijms20092178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 04/25/2019] [Accepted: 04/30/2019] [Indexed: 01/20/2023] Open
Abstract
Modelling is essential for a better understanding of microcirculatory pathophysiology. In this study we tested our hyperoxia-mouse model with healthy and non-healthy mice. Animals (n = 41) were divided in groups—a control group, with 8 C57/BL6 non-transgenic male mice, a diabetic group (DB), with 8 C57BLKsJ-db/db obese diabetic mice and the corresponding internal controls of 8 age-matched C57BLKsJ-db/+ mice, and a cardiac hypertrophy group (CH), with 9 FVB/NJ cα-MHC-NHE-1 transgenic mice prone to develop cardiac failure and 8 age-matched internal controls. After anesthesia, perfusion data was collected by laser Doppler flowmetry (LDF) during rest (Phase 1), hyperoxia (Phase 2), and recovery (Phase 3) and compared. The LDF wavelet transform components analysis (WA) has shown that cardiorespiratory, myogenic, and endothelial components acted as main markers. In DB group, db/+ animals behave as the Control group, but WA already demonstrated significant differences for myogenic and endothelial components. Noteworthy was the increase of the sympathetic components in the db/db set, as in the cardiac overexpressing NHE1 transgenic animals, reported as a main component of these pathophysiological processes. Our model confirms that flow motion has a universal nature. The LDF component’s WA provides a deeper look into vascular pathophysiology reinforcing the model’s reproducibility, robustness, and discriminative capacities.
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Affiliation(s)
- Luis Monteiro Rodrigues
- CBIOS-Universidade Lusófona's Research Center for Biosciences and Health Technologies, Campo Grande, 1749 024 Lisboa, Portugal.
| | - Henrique Nazaré Silva
- CBIOS-Universidade Lusófona's Research Center for Biosciences and Health Technologies, Campo Grande, 1749 024 Lisboa, Portugal.
- Pharmacological Sciences Department-Universidade de Lisboa, Faculty of Pharmacy, Av Prof Gama Pinto 1649 003 Lisboa, Portugal.
| | - Hugo Ferreira
- IBEB-Biophysics and Biomedical Engineering Institute, Universidade de Lisboa Faculty of Sciences, Campo Grande 1749 016 Lisboa, Portugal.
| | - Alain-Pierre Gadeau
- INSERM U1034, Adaptation cardiovasculaire à l'ischémie, F-33600 Pessac, France.
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Wei J, Shufelt C, Stock EO, Mills C, Dhawan S, Jacob R, Torbati T, Cook-Wiens G, Benowitz N, Jacob P, Ganz P, Bairey Merz CN, Redberg R. Vascular Aging Is Accelerated in Flight Attendants With Occupational Secondhand Smoke Exposure. J Occup Environ Med 2019; 61:197-202. [PMID: 30475308 PMCID: PMC6698135 DOI: 10.1097/jom.0000000000001497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To determine whether early vascular aging may be present in flight attendants with remote in-cabin secondhand smoke (SHS) exposure. METHODS Twenty-six flight attendants with a history of in-cabin SHS exposure prior to the airline smoking bans were recruited. Pulse wave analysis, peripheral arterial tonometry, and brachial artery reactivity testing evaluated their arterial compliance and endothelial function. RESULTS Flight attendants with remote in-cabin SHS exposure have normal blood pressure, pulse wave velocity, and reactive hyperemia index, but abnormal pulse pressure, augmentation index, flow-mediated dilation, and hyperemic mean flow ratio. CONCLUSION These preliminary findings suggest that flight attendants with remote in-cabin SHS exposure have preclinical signs of accelerated vascular aging and raise new questions about the relationship between remote SHS exposure and vascular health.
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Affiliation(s)
- Janet Wei
- Barbra Streisand Women’s Heart Center, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Chrisandra Shufelt
- Barbra Streisand Women’s Heart Center, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Eveline Oestreicher Stock
- Flight Attendant Medical Research Institute (FAMRI) Bland Lane Center of Excellence on Second Hand Smoke, University of California at San Francisco, San Francisco, CA
- Department of Medicine, Division of Cardiology, University of California, San Francisco, San Francisco, CA
| | - Claire Mills
- Division of Cardiology, Center of Excellence in Vascular Research at the San Francisco General Hospital, San Francisco, CA
| | - Shivani Dhawan
- Barbra Streisand Women’s Heart Center, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Riya Jacob
- Flight Attendant Medical Research Institute (FAMRI) Bland Lane Center of Excellence on Second Hand Smoke, University of California at San Francisco, San Francisco, CA
| | - Tina Torbati
- Barbra Streisand Women’s Heart Center, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Galen Cook-Wiens
- Biostatistics and Bioinformatics Core, Cedars-Sinai Medical Center, Los Angeles CA
| | - Neal Benowitz
- Flight Attendant Medical Research Institute (FAMRI) Bland Lane Center of Excellence on Second Hand Smoke, University of California at San Francisco, San Francisco, CA
| | - Peyton Jacob
- Flight Attendant Medical Research Institute (FAMRI) Bland Lane Center of Excellence on Second Hand Smoke, University of California at San Francisco, San Francisco, CA
| | - Peter Ganz
- Division of Cardiology, Center of Excellence in Vascular Research at the San Francisco General Hospital, San Francisco, CA
- UCSF Center for Tobacco Control Research and Education Tobacco Centers of Regulatory Science (TCORS), San Francisco, CA
| | - C. Noel Bairey Merz
- Barbra Streisand Women’s Heart Center, Cedars-Sinai Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA
| | - Rita Redberg
- Flight Attendant Medical Research Institute (FAMRI) Bland Lane Center of Excellence on Second Hand Smoke, University of California at San Francisco, San Francisco, CA
- Department of Medicine, Division of Cardiology, University of California, San Francisco, San Francisco, CA
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Gold K, Gaharwar AK, Jain A. Emerging trends in multiscale modeling of vascular pathophysiology: Organ-on-a-chip and 3D printing. Biomaterials 2019; 196:2-17. [PMID: 30072038 PMCID: PMC6344330 DOI: 10.1016/j.biomaterials.2018.07.029] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 07/13/2018] [Accepted: 07/18/2018] [Indexed: 01/17/2023]
Abstract
Most biomedical and pharmaceutical research of the human vascular system aims to unravel the complex mechanisms that drive disease progression from molecular to organ levels. The knowledge gained can then be used to innovate diagnostic and treatment strategies which can ultimately be determined precisely for patients. Despite major advancements, current modeling strategies are often limited at identifying, quantifying, and dissecting specific cellular and molecular targets that regulate human vascular diseases. Therefore, development of multiscale modeling approaches are needed that can advance our knowledge and facilitate the design of next-generation therapeutic approaches in vascular diseases. This article critically reviews animal models, static in vitro systems, and dynamic in vitro culture systems currently used to model vascular diseases. A leading emphasis on the potential of emerging approaches, specifically organ-on-a-chip and three-dimensional (3D) printing, to recapitulate the innate human vascular physiology and anatomy is described. The applications of these approaches and future outlook in designing and screening novel therapeutics are also presented.
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Affiliation(s)
- Karli Gold
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA
| | - Akhilesh K Gaharwar
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA; Department of Material Sciences, Texas A&M University, College Station, TX, 77843, USA; Center for Remote Health and Technologies and Systems, Texas A&M University, College Station, TX, 77843, USA.
| | - Abhishek Jain
- Department of Biomedical Engineering, Texas A&M University, College Station, TX, 77843, USA.
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30
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Affiliation(s)
- Larissa A. Shimoda
- Division of Pulmonary and Critical Care MedicineDepartment of MedicineJohns Hopkins School of MedicineBaltimoreMD21224USA
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31
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Abstract
Vascular stiffness can be measured using numerous techniques including assessments of central haemodynamics, aortic arterial stiffness, and indices of aortic wave reflection and endothelial dilatation. Impaired vascular function is associated with increased risk of cardiovascular disease (CVD). Epidemiological studies indicate that regular nut consumption reduces CVD risk, with one of the proposed mechanisms being via improvements in vascular function. This narrative review summarizes the evidence from a systematic search of the literature of the effects of tree nut and peanut consumption on measures of vascular function excluding flow mediated dilatation. A total of 16 studies were identified, with a mix of acute controlled studies (n = 3), an uncontrolled pre/post chronic study (n = 1), chronic crossover (n = 7) and parallel studies (n = 5). Nut types tested included almonds, peanuts, pine nuts, pistachios and walnuts, with dose and length of supplementation varying greatly across studies. Most studies (n = 13) included individuals at risk for CVD, according to various criteria. Findings were inconsistent, with ten studies reporting no significant changes in vascular function and six studies (one acute and five chronic studies) reporting improvements in at least one measure of vascular function. In summary, nuts have the potential to improve vascular function and future studies should consider the population, dose and length of nut supplementation as well as suitability of the different vascular function techniques.
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Affiliation(s)
- Samantha Morgillo
- School of Health Sciences, University of South Australia, Adelaide 5001, Australia.
| | - Alison M Hill
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide 5001, Australia.
| | - Alison M Coates
- School of Health Sciences, University of South Australia, Adelaide 5001, Australia.
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Kopernik M, Tokarczyk P. Development of multi-phase models of blood flow for medium-sized vessels with stenosis. Acta Bioeng Biomech 2019; 21:63-70. [PMID: 31741478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
PURPOSE The purpose of the work was to develop two-phase non-Newtonian blood models for medium-sized vessels with stenosis using power law and Herschel-Bulkley models. METHODS The blood flow was simulated in 3D models of blood vessels with 60% stenosis. The Ansys Fluent software was applied to implement the two-phase non-Newtonian blood models. In the present paper, the mixture model was selected to model the two phases of blood: plasma and red blood cells. RESULTS Simulations were carried out for four blood models: a) single-phase non-Newtonian, b) two-phase non-Newtonian, c) two-phase Herschel-Bulkley with yield stress 0 mPa, and d) two-phase Herschel-Bulkley with yield stress 10 mPa for blood plasma, while flow took place in vessel with stenosis 60%. Presentation of results in this paper shows that stenosis can substantially affect blood flow in the artery, causing variations of velocity and wall shear stress. Thus, the results in the present paper are maximum values of blood velocity and wall shear stress, profiles and distributions of blood velocity and wall shear stress computed for single- and two-phase blood models for medium-sized vessels with stenosis. CONCLUSIONS For the two-phase blood models the influence of initial velocity on blood flow in the stenosis zone is not observed, the velocity profiles are symmetric and parabolic. Contrary, for the single phase non-Newtonian blood model, the velocity profile is flat in the stenosis zone and distribution of velocity is disturbed just behind the stenosis zone. The shapes of wall shear stress profiles for two-phase blood models are similar and symmetric in the center of stenosis. The biggest differences in maximum values of velocities and wall shear stress are observed between single phase non-Newtonian power law and Herschel-Bulkley blood models. The comparison of the obtained results with the literature indicates that the two-phase Herschel-Bulkley model is the most suitable for describing flow in medium-sized vessels with stenosis.
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Abstract
Perivascular adipose tissue (PVAT), the adipose tissue that surrounds most of the vasculature, has emerged as an active component of the blood vessel wall regulating vascular homeostasis and affecting the pathogenesis of atherosclerosis. Although PVAT characteristics resemble both brown and white adipose tissues, recent evidence suggests that PVAT develops from its own distinct precursors implying a closer link between PVAT and vascular system. Under physiological conditions, PVAT has potent anti-atherogenic properties mediated by its ability to secrete various biologically active factors that induce non-shivering thermogenesis and metabolize fatty acids. In contrast, under pathological conditions (mainly obesity), PVAT becomes dysfunctional, loses its thermogenic capacity and secretes pro-inflammatory adipokines that induce endothelial dysfunction and infiltration of inflammatory cells, promoting atherosclerosis development. Since PVAT plays crucial roles in regulating key steps of atherosclerosis development, it may constitute a novel therapeutic target for the prevention and treatment of atherosclerosis. Here, we review the current literature regarding the roles of PVAT in the pathogenesis of atherosclerosis.
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Affiliation(s)
- Xiao-Yan Qi
- Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan Province, University of South China, Hengyang, 421001 China
| | - Shun-Lin Qu
- Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan Province, University of South China, Hengyang, 421001 China
| | - Wen-Hao Xiong
- Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan Province, University of South China, Hengyang, 421001 China
| | - Oren Rom
- Cardiovascular Research Center, University of Michigan, Ann Arbor, MI USA
| | - Lin Chang
- Cardiovascular Research Center, University of Michigan, Ann Arbor, MI USA
| | - Zhi-Sheng Jiang
- Institute of Cardiovascular Disease, Key Lab for Arteriosclerology of Hunan Province, University of South China, Hengyang, 421001 China
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Nowak KL, Wang W, Farmer-Bailey H, Gitomer B, Malaczewski M, Klawitter J, Jovanovich A, Chonchol M. Vascular Dysfunction, Oxidative Stress, and Inflammation in Autosomal Dominant Polycystic Kidney Disease. Clin J Am Soc Nephrol 2018; 13:1493-1501. [PMID: 30228110 PMCID: PMC6218833 DOI: 10.2215/cjn.05850518] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 08/08/2018] [Indexed: 01/29/2023]
Abstract
BACKGROUND AND OBJECTIVES Both increased arterial stiffness and vascular endothelial dysfunction are evident in patients with autosomal dominant polycystic kidney disease, even early in the course of the disease when kidney function in preserved. Vascular dysfunction in autosomal dominant polycystic kidney disease is thought to be related to vascular oxidative stress and inflammation, but direct evidence is lacking. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS We assessed carotid-femoral pulse-wave velocity (arterial stiffness) and brachial artery flow-mediated dilation (vascular endothelial function) in participants with early-stage autosomal dominant polycystic kidney disease (eGFR≥60 ml/min per 1.73 m2) and a history of controlled hypertension and in healthy controls. Brachial artery flow-mediated dilation was also assessed after infusion of ascorbic acid to inhibit vascular oxidative stress compared with saline. Vascular endothelial cells were collected from a peripheral vein to measure expression of proteins, and circulating markers were also assessed by ELISA or liquid chromatography-tandem mass spectrometry. RESULTS In total, 61 participants with autosomal dominant polycystic kidney disease (34±9 years old [mean±SD]) and 19 healthy controls (30±5 years old) were studied. Carotid-femoral pulse-wave velocity was higher in participants with autosomal dominant polycystic kidney disease compared with healthy controls (650±131 versus 562±81 cm/s; P=0.007). Brachial artery flow-mediated dilation was 8.2%±5.8% in participants with autosomal dominant polycystic kidney disease and 10.8%±4.7% in controls (P=0.08). Among participants with autosomal dominant polycystic kidney disease, flow-mediated dilation increased from 7.7%±4.5% to 9.4%±5.2% with ascorbic acid, a difference of 1.72 (95% confidence interval, 0.80 to 2.63), whereas in control participants, flow-mediated dilation decreased nonsignificantly from 10.8%±4.7% to 10.6%±5.4%, a difference of -0.20 (95% confidence interval, -1.24 to 0.84; P interaction =0.02). Endothelial cell protein expression of NF-κB was greater in participants with autosomal dominant polycystic kidney disease (0.48±0.12 versus 0.41±0.10 [intensity versus human umbilical vein endothelial cell control]; P=0.03). However, circulating oxidative stress markers and bioactive lipid mediators did not significantly differ according to the autosomal dominant polycystic kidney disease diagnosis. CONCLUSIONS These results provide support for the hypothesis that vascular oxidative stress and inflammation develop with autosomal dominant polycystic kidney disease. PODCAST This article contains a podcast at https://www.asn-online.org/media/podcast/CJASN/2018_09_18_CJASNPodcast_18_10_.mp3.
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Affiliation(s)
| | - Wei Wang
- Division of Renal Diseases and Hypertension
| | | | | | | | - Jelena Klawitter
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado; and
| | - Anna Jovanovich
- Division of Renal Diseases and Hypertension
- Renal Section, Medical Service, Denver Veterans Affairs Medical Center, Denver, Colorado
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Bi R, Balasundaram G, Jeon S, Tay HC, Pu Y, Li X, Moothanchery M, Kim C, Olivo M. Photoacoustic microscopy for evaluating combretastatin A4 phosphate induced vascular disruption in orthotopic glioma. J Biophotonics 2018; 11:e201700327. [PMID: 29419946 DOI: 10.1002/jbio.201700327] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 02/06/2018] [Indexed: 05/22/2023]
Abstract
The use of an optical resolution photoacoustic microscopy (OR-PAM) system to evaluate the vascular disruptive effect of combretastatin A4 Phosphate (CA4P) on a murine orthotopic glioma with intact skull is described here. Second generation optical-resolution photoacoustic microscopy scanner with a 532 nm pulsed diode-pumped solid-state laser that specifically matches the absorption maximum of hemoglobin in tissues was used to image orthotopic glioma inoculated in mouse brain. Two-dimensional maps of brain vasculature with a lateral resolution of 5 μm and a depth of 700 μm at a field of view 5 × 4 mm were acquired on normal brain and glioma brain. Longitudinal imaging of the brain pre- and post-administration of CA4P, a FDA approved drug for solid tumors, enabled the monitoring of hemodynamic changes in tumor vasculature revealing the well documented vascular shutdown and recovery associated with this drug. Our study marks the beginning of potential prospects of this technology as an imaging tool for preclinical and clinical study of pathologies characterized by changes in the vasculature.
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Affiliation(s)
- Renzhe Bi
- Singapore Bioimaging Consortium, Singapore
| | | | - Seungwan Jeon
- Department of Creative IT Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, Republic of Korea
| | | | - Yang Pu
- Micro Photo Acoustics Inc., Ronkonkoma, New York
| | - Xiuting Li
- Singapore Bioimaging Consortium, Singapore
| | | | - Chulhong Kim
- Department of Creative IT Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, Republic of Korea
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Bi R, Balasundaram G, Jeon S, Tay HC, Pu Y, Li X, Moothanchery M, Kim C, Olivo M. Photoacoustic microscopy for evaluating combretastatin A4 phosphate induced vascular disruption in orthotopic glioma. J Biophotonics 2018; 11:e201700327. [PMID: 29419946 DOI: 10.1002/jbio.2018.11.issue-10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Accepted: 02/06/2018] [Indexed: 05/21/2023]
Abstract
The use of an optical resolution photoacoustic microscopy (OR-PAM) system to evaluate the vascular disruptive effect of combretastatin A4 Phosphate (CA4P) on a murine orthotopic glioma with intact skull is described here. Second generation optical-resolution photoacoustic microscopy scanner with a 532 nm pulsed diode-pumped solid-state laser that specifically matches the absorption maximum of hemoglobin in tissues was used to image orthotopic glioma inoculated in mouse brain. Two-dimensional maps of brain vasculature with a lateral resolution of 5 μm and a depth of 700 μm at a field of view 5 × 4 mm were acquired on normal brain and glioma brain. Longitudinal imaging of the brain pre- and post-administration of CA4P, a FDA approved drug for solid tumors, enabled the monitoring of hemodynamic changes in tumor vasculature revealing the well documented vascular shutdown and recovery associated with this drug. Our study marks the beginning of potential prospects of this technology as an imaging tool for preclinical and clinical study of pathologies characterized by changes in the vasculature.
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Affiliation(s)
- Renzhe Bi
- Singapore Bioimaging Consortium, Singapore
| | | | - Seungwan Jeon
- Department of Creative IT Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, Republic of Korea
| | | | - Yang Pu
- Micro Photo Acoustics Inc., Ronkonkoma, New York
| | - Xiuting Li
- Singapore Bioimaging Consortium, Singapore
| | | | - Chulhong Kim
- Department of Creative IT Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, Republic of Korea
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Shaw CJ, Rivens I, Civale J, Botting KJ, Ter Haar G, Giussani DA, Lees CC. Trans-abdominal in vivo placental vessel occlusion using High Intensity Focused Ultrasound. Sci Rep 2018; 8:13631. [PMID: 30206278 PMCID: PMC6134117 DOI: 10.1038/s41598-018-31914-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/28/2018] [Indexed: 12/16/2022] Open
Abstract
Pre-clinically, High Intensity Focused Ultrasound (HIFU) has been shown to safely and effectively occlude placental blood vessels in the acute setting, when applied through the uterus. However, further development of the technique to overcome the technical challenges of targeting and occluding blood vessels through intact skin remains essential to translation into human studies. So too does the assessment of fetal wellbeing following this procedure, and demonstration of the persistence of vascular occlusion. At 115 ± 10 d gestational age (term~147 days) 12 pregnant sheep were exposed to HIFU (n = 6), or to a sham (n = 6) therapy through intact abdominal skin (1.66 MHz, 5 s duration, in situ ISPTA 1.3-4.4 kW.cm-2). Treatment success was defined as undetectable colour Doppler signal in the target placental vessel following HIFU exposures. Pregnancies were monitored for 21 days using diagnostic ultrasound from one day before HIFU exposure until term, when post-mortem examination was performed. Placental vessels were examined histologically for evidence of persistent vascular occlusion. HIFU occluded 31/34 (91%) of placental vessels targeted, with persistent vascular occlusion evident on histological examination 20 days after treatment. The mean diameter of occluded vessels was 1.4 mm (range 0.3-3.3 mm). All pregnancies survived until post mortem without evidence of significant maternal or fetal iatrogenic harm, preterm labour, maternal or fetal haemorrhage or infection. Three of six ewes exposed to HIFU experienced abdominal skin burns, which healed without intervention within 21 days. Mean fetal weight, fetal growth velocity and other measures of fetal biometry were not affected by exposure to HIFU. Fetal Doppler studies indicated a transient increase in the umbilical artery pulsatility index (PI) and a decrease in middle cerebral artery PI as a result of general anaesthesia, which was not different between sham and treatment groups. We report the first successful application of fully non-invasive HIFU for occlusion of placental blood flow in a pregnant sheep model, with a low risk of significant complications. This proof of concept study demonstrates the potential of this technique for clinical translation.
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Affiliation(s)
- Caroline J Shaw
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK
- Institute of Reproductive and Developmental Biology, Imperial College London, London, W12 0HS, UK
| | - Ian Rivens
- Joint Department of Physics, Institute of Cancer Research, Sutton, London, SM2 5NG, UK
| | - John Civale
- Joint Department of Physics, Institute of Cancer Research, Sutton, London, SM2 5NG, UK
| | - Kimberley J Botting
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK
- Cardiovascular Strategic Research Initiative, University of Cambridge, Cambridge, UK
| | - Gail Ter Haar
- Joint Department of Physics, Institute of Cancer Research, Sutton, London, SM2 5NG, UK
| | - Dino A Giussani
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge, CB2 3EG, UK
- Cardiovascular Strategic Research Initiative, University of Cambridge, Cambridge, UK
| | - Christoph C Lees
- Institute of Reproductive and Developmental Biology, Imperial College London, London, W12 0HS, UK.
- Department of Obstetrics and Gynaecology, University Hospitals Leuven, 3000, Leuven, Belgium.
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Abstract
The concept of diabetic retinopathy as a microvascular disease has evolved, in that it is now considered a more complex diabetic complication in which neurodegeneration plays a significant role. In this article we provide a critical overview of the role of microvascular abnormalities and neurodegeneration in the pathogenesis of diabetic retinopathy. A special emphasis is placed on the pathophysiology of the neurovascular unit (NVU), including the contributions of microvascular and neural elements. The potential mechanisms linking retinal neurodegeneration and early microvascular impairment, and the effects of neuroprotective drugs are summarised. Additionally, we discuss how the assessment of retinal neurodegeneration could be an important index of cognitive status, thus helping to identify individuals at risk of dementia, which will impact on current procedures for diabetes management. We conclude that glial, neural and microvascular dysfunction are interdependent and essential for the development of diabetic retinopathy. Despite this intricate relationship, retinal neurodegeneration is a critical endpoint and neuroprotection, itself, can be considered a therapeutic target, independently of its potential impact on microvascular disease. In addition, interventional studies targeting pathogenic pathways that impact the NVU are needed. Findings from these studies will be crucial, not only for increasing our understanding of diabetic retinopathy, but also to help to implement a timely and efficient personalised medicine approach for treating this diabetic complication.
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Affiliation(s)
- Rafael Simó
- Diabetes and Metabolism Research Unit, Vall d'Hebron Research Institute, Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III (ISCIII), Universitat Autònoma de Barcelona, Pg. Vall d'Hebron 119-129, 08035, Barcelona, Spain.
| | - Alan W Stitt
- Centre for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University, Belfast, UK
| | - Thomas W Gardner
- Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan Medical School, Ann Arbor, MI, USA
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Caporali A, Bäck M, Daemen MJ, Hoefer IE, Jones EA, Lutgens E, Matter CM, Bochaton-Piallat ML, Siekmann AF, Sluimer JC, Steffens S, Tuñón J, Vindis C, Wentzel JJ, Ylä-Herttuala S, Evans PC. Future directions for therapeutic strategies in post-ischaemic vascularization: a position paper from European Society of Cardiology Working Group on Atherosclerosis and Vascular Biology. Cardiovasc Res 2018; 114:1411-1421. [PMID: 30016405 PMCID: PMC6106103 DOI: 10.1093/cvr/cvy184] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/16/2018] [Accepted: 07/16/2018] [Indexed: 12/16/2022] Open
Abstract
Modulation of vessel growth holds great promise for treatment of cardiovascular disease. Strategies to promote vascularization can potentially restore function in ischaemic tissues. On the other hand, plaque neovascularization has been shown to associate with vulnerable plaque phenotypes and adverse events. The current lack of clinical success in regulating vascularization illustrates the complexity of the vascularization process, which involves a delicate balance between pro- and anti-angiogenic regulators and effectors. This is compounded by limitations in the models used to study vascularization that do not reflect the eventual clinical target population. Nevertheless, there is a large body of evidence that validate the importance of angiogenesis as a therapeutic concept. The overall aim of this Position Paper of the ESC Working Group of Atherosclerosis and Vascular biology is to provide guidance for the next steps to be taken from pre-clinical studies on vascularization towards clinical application. To this end, the current state of knowledge in terms of therapeutic strategies for targeting vascularization in post-ischaemic disease is reviewed and discussed. A consensus statement is provided on how to optimize vascularization studies for the identification of suitable targets, the use of animal models of disease, and the analysis of novel delivery methods.
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Affiliation(s)
- Andrea Caporali
- University/British Heart Foundation Centre for Cardiovascular Science, The Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, UK
| | - Magnus Bäck
- Division of Valvular and Coronary Disease, Department of Medicine, Center for Molecular Medicine, Karolinska Institutet and University Hospital Stockholm, Stockholm, Sweden
- INSERM U1116, University of Lorraine, Nancy University Hospital, Nancy, France
| | - Mat J Daemen
- Department of Pathology, Academic Medical Hospital, University of Amsterdam, Amsterdam, The Netherlands
| | - Imo E Hoefer
- Laboratory of Experimental Cardiology and Laboratory of Clinical Chemistry and Hematology, UMC Utrecht, Utrecht, Netherlands
| | | | - Esther Lutgens
- Department of Medical Biochemistry, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, German Centre for Cardiovascular Research (DZHK), partner site Munich Heart Alliance, Munich, Germany
| | - Christian M Matter
- Department of Cardiology, University Heart Center, University Hospital Zurich, Zurich, Switzerland
| | | | - Arndt F Siekmann
- Max Planck Institute for Molecular Biomedicine, Muenster, Germany
- Cells-in-Motion Cluster of Excellence (EXC 1003–CiM), University of Muenster, Muenster, Germany
| | - Judith C Sluimer
- University/British Heart Foundation Centre for Cardiovascular Science, The Queen’s Medical Research Institute, University of Edinburgh, Edinburgh, UK
- Department of Pathology, CARIM, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Sabine Steffens
- Ludwig-Maximilians-University, German Centre for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Munich, Germany
| | - José Tuñón
- IIS-Fundación Jiménez Díaz, Madrid, Spain
- Autónoma University, Madrid, Spain
| | - Cecile Vindis
- INSERM U1048/Institute of Metabolic and Cardiovascular Diseases, Toulouse, France
| | - Jolanda J Wentzel
- Department of Cardiology, Biomechanics Laboratory, Erasmus MC, Rotterdam, The Netherlands
| | - Seppo Ylä-Herttuala
- A.I. Virtanen Institute, University of Eastern Finland, Kuopio, Finland
- Heart Center and Gene Therapy Unit, Kuopio University Hospital, Kuopio, Finland
| | - Paul C Evans
- Department of Infection, Immunity and Cardiovascular Disease, Faculty of Medicine, Dentistry and Health, the INSIGNEO Institute for In Silico Medicine and the Bateson Centre, University of Sheffield, Sheffield, UK
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Furuuchi R, Shimizu I, Yoshida Y, Hayashi Y, Ikegami R, Suda M, Katsuumi G, Wakasugi T, Nakao M, Minamino T. Boysenberry polyphenol inhibits endothelial dysfunction and improves vascular health. PLoS One 2018; 13:e0202051. [PMID: 30106986 PMCID: PMC6091942 DOI: 10.1371/journal.pone.0202051] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 07/26/2018] [Indexed: 12/17/2022] Open
Abstract
Endothelial cells have an important role in maintaining vascular homeostasis. Age-related disorders (including obesity, diabetes, and hypertension) or aging per se induce endothelial dysfunction that predisposes to the development of atherosclerosis. Polyphenols have been reported to suppress age-related endothelial cell disorders, but their role in vascular function is yet to be determined. We investigated the influence of boysenberry polyphenol on vascular health under metabolic stress in a murine model of dietary obesity. We found that administration of boysenberry polyphenol suppressed production of reactive oxygen species (ROS) and increased production of nitric oxide (NO) in the aorta. It has been reported that p53 induces cellular senescence and has a crucial role in age-related disorders, including heart failure and diabetes. Administration of boysenberry polyphenol significantly reduced the endothelial p53 level in the aorta and ameliorated endothelial cell dysfunction in iliac arteries under metabolic stress. Boysenberry polyphenol also reduced ROS and p53 levels in cultured human umbilical vein endothelial cells (HUVECs), while increasing NO production. Uncoupled endothelial nitric oxide synthase (eNOS monomer) is known to promote ROS production. We found that boysenberry polyphenol reduced eNOS monomer levels both in vivo and in vitro, along with an increase of eNOS dimerization. To investigate the components of boysenberry polyphenol mediating these favorable biological effects, we extracted the anthocyanin fractions. We found that anthocyanins contributed to suppression of ROS and p53, in association with increased NO production and eNOS dimerization. In an ex vivo study, anthocyanins promoted relaxation of iliac arteries from mice with dietary obesity. These findings indicate that boysenberry polyphenol and anthocyanins, a major component of this polyphenol, inhibit endothelial dysfunction and contribute to maintenance of vascular homeostasis.
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Affiliation(s)
- Ryo Furuuchi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Bourbon Corporation, Niigata, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaaki Nakao
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- * E-mail: ,
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Kuo CT, Lu SR, Chen WM, Wang JY, Lee SC, Chang HH, Wo AM, Chen BPC, Lee H. Facilitating tumor spheroid-based bioassays and in vitro blood vessel modeling via bioinspired self-formation microstructure devices. Lab Chip 2018; 18:2453-2465. [PMID: 30019734 DOI: 10.1039/c8lc00423d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Non-planar microstructure-based tissue culture devices have emerged as powerful tools to mimic in vivo physiological microenvironments in a wide range of medical applications. Here we report a spontaneous aqueous molding approach - inspired by Stenocara gracilipes beetles - to rapidly fabricate non-planar microstructure devices for facilitating tissue-based bioassays. The device fabrication is determined from the self-assembled liquid morphology, which is induced by condensation or guided by surface tension. Through experiments and modeling, we reveal that the molding mainly comprises two typical circular and striped domains, highlighting versatile applications for bioengineering. In addition, the molding characteristic is dependent on the geometry of the patterned wetting surfaces, the working volume of the liquid, and the interaction between the liquid and the substrate. The theoretical model, based on the geometry of the patterned liquid, is highly consistent with experimental data. We also demonstrate that our approach can facilitate the culturing of tumor spheroids incorporated with biomimic nano-cilia, rapid high-throughput drug screening, tumor spheroid migration assay, and in vitro modeling of blood vessels. Remarkably, the delivery of multiple concentrations of drugs and their associate mixtures (a total of 25 test spots in one device) can be carried out simultaneously within seconds. Taken together, these insights may offer new opportunities to tailor non-planar microstructures, and our proposed methodology can be applicable for the emerging needs in tumor cell biology and tissue engineering.
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Affiliation(s)
- Ching-Te Kuo
- Department of Electrical Engineering, Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan, Republic of China
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Ash SY, Rahaghi FN, Come CE, Ross JC, Colon AG, Cardet-Guisasola JC, Dunican EM, Bleecker ER, Castro M, Fahy JV, Fain SB, Gaston BM, Hoffman EA, Jarjour NN, Mauger DT, Wenzel SE, Levy BD, San Jose Estepar R, Israel E. Pruning of the Pulmonary Vasculature in Asthma. The Severe Asthma Research Program (SARP) Cohort. Am J Respir Crit Care Med 2018; 198:39-50. [PMID: 29672122 PMCID: PMC6034125 DOI: 10.1164/rccm.201712-2426oc] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Accepted: 04/19/2018] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Loss of the peripheral pulmonary vasculature, termed vascular pruning, is associated with disease severity in patients with chronic obstructive pulmonary disease. OBJECTIVES To determine if pulmonary vascular pruning is associated with asthma severity and exacerbations. METHODS We measured the total pulmonary blood vessel volume (TBV) and the blood vessel volume of vessels less than 5 mm2 in cross-sectional area (BV5) and of vessels less than 10 mm2 (BV10) in cross-sectional area on noncontrast computed tomographic scans of participants from the Severe Asthma Research Program. Lower values of the BV5 to TBV ratio (BV5/TBV) and the BV10 to TBV ratio (BV10/TBV) represented vascular pruning (loss of the peripheral pulmonary vasculature). MEASUREMENTS AND MAIN RESULTS Compared with healthy control subjects, patients with severe asthma had more pulmonary vascular pruning. Among those with asthma, those with poor asthma control had more pruning than those with well-controlled disease. Pruning of the pulmonary vasculature was also associated with lower percent predicted FEV1 and FVC, greater peripheral and sputum eosinophilia, and higher BAL serum amyloid A/lipoxin A4 ratio but not with low-attenuation area or with sputum neutrophilia. Compared with individuals with less pruning, individuals with the most vascular pruning had 150% greater odds of reporting an asthma exacerbation (odds ratio, 2.50; confidence interval, 1.05-5.98; P = 0.039 for BV10/TBV) and reported 45% more asthma exacerbations during follow-up (incidence rate ratio, 1.45; confidence interval, 1.02-2.06; P = 0.036 for BV10/TBV). CONCLUSIONS Pruning of the peripheral pulmonary vasculature is associated with asthma severity, control, and exacerbations, and with lung function and eosinophilia.
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Affiliation(s)
- Samuel Y. Ash
- Division of Pulmonary and Critical Care Medicine and
- Applied Chest Imaging Laboratory, Brigham and Women’s Hospital, Boston, Massachusetts
| | - Farbod N. Rahaghi
- Division of Pulmonary and Critical Care Medicine and
- Applied Chest Imaging Laboratory, Brigham and Women’s Hospital, Boston, Massachusetts
| | - Carolyn E. Come
- Division of Pulmonary and Critical Care Medicine and
- Applied Chest Imaging Laboratory, Brigham and Women’s Hospital, Boston, Massachusetts
| | - James C. Ross
- Applied Chest Imaging Laboratory, Brigham and Women’s Hospital, Boston, Massachusetts
| | - Alysha G. Colon
- College of Medicine, University of Florida, Gainesville, Florida
| | | | - Eleanor M. Dunican
- St. Vincent’s University Hospital, University College Dublin, Dublin, Ireland
| | - Eugene R. Bleecker
- Division of Genetics, Genomics and Precision Medicine, University of Arizona, Tucson, Arizona
| | - Mario Castro
- Division of Pulmonary and Critical Care Medicine, Washington University, St. Louis, Missouri
| | - John V. Fahy
- Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco, California
| | - Sean B. Fain
- Department of Medical Physics
- Department of Radiology
- Department of Biomedical Engineering, and
| | - Benjamin M. Gaston
- Division of Pediatric Allergy/Immunology and
- Division of Pediatric Pulmonology, Rainbow Babies and Children’s Hospital and Cleveland Medical Center, Cleveland, Ohio
| | - Eric A. Hoffman
- Department of Radiology
- Department of Biomedical Engineering, and
- Department of Medicine, University of Iowa, Iowa City, Iowa
| | - Nizar N. Jarjour
- Division of Pulmonary and Critical Care Medicine, University of Wisconsin, Madison, Wisconsin
| | - David T. Mauger
- Division of Biostatistics and Bioinformatics, Eberly College of Science, Penn State University, University Park, Pennsylvania; and
| | - Sally E. Wenzel
- Division of Pulmonary, Allergy and Critical Care, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Bruce D. Levy
- Division of Pulmonary and Critical Care Medicine and
| | - Raul San Jose Estepar
- Applied Chest Imaging Laboratory, Brigham and Women’s Hospital, Boston, Massachusetts
| | - Elliot Israel
- Division of Pulmonary and Critical Care Medicine and
| | - SARP Investigators
- Division of Pulmonary and Critical Care Medicine and
- Applied Chest Imaging Laboratory, Brigham and Women’s Hospital, Boston, Massachusetts
- College of Medicine, University of Florida, Gainesville, Florida
- Division of Allergy and Immunology, Department of Medicine, University of South Florida, Tampa, Florida
- St. Vincent’s University Hospital, University College Dublin, Dublin, Ireland
- Division of Genetics, Genomics and Precision Medicine, University of Arizona, Tucson, Arizona
- Division of Pulmonary and Critical Care Medicine, Washington University, St. Louis, Missouri
- Division of Pulmonary and Critical Care Medicine, University of California, San Francisco, San Francisco, California
- Department of Medical Physics
- Department of Radiology
- Department of Biomedical Engineering, and
- Division of Pulmonary and Critical Care Medicine, University of Wisconsin, Madison, Wisconsin
- Division of Pediatric Allergy/Immunology and
- Division of Pediatric Pulmonology, Rainbow Babies and Children’s Hospital and Cleveland Medical Center, Cleveland, Ohio
- Department of Radiology
- Department of Biomedical Engineering, and
- Department of Medicine, University of Iowa, Iowa City, Iowa
- Division of Biostatistics and Bioinformatics, Eberly College of Science, Penn State University, University Park, Pennsylvania; and
- Division of Pulmonary, Allergy and Critical Care, University of Pittsburgh, Pittsburgh, Pennsylvania
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Rabender CS, Bruno N, Alam A, Sundaresan G, Zweit J, Mikkelsen RB. Sepiapterin Enhances Tumor Radio- and Chemosensitivities by Promoting Vascular Normalization. J Pharmacol Exp Ther 2018; 365:536-543. [PMID: 29581154 PMCID: PMC11046730 DOI: 10.1124/jpet.117.245258] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/26/2018] [Indexed: 12/22/2022] Open
Abstract
Previously, we demonstrated that nitric oxide (NO) synthase (NOS) is uncoupled in a wide range of solid tumors and that restoring NOS coupling with the tetrahydrobiopterin precursor sepiapterin (SP) inhibits tumor progression. Endothelial dysfunction characterizes the poorly functional vasculature of solid tumors, and since NO is critical for regulation of endothelial function we asked whether SP, by recoupling NOS, improves tumor vasculature structure and function-enhancing chemotherapeutic delivery and response to radiotherapy. MMTV-neu mice with spontaneous breast tumors were treated with SP by oral gavage and evaluated by multispectral optoacoustic tomographic analysis of tumor HbO2 and by tissue staining for markers of hypoxia, blood perfusion, and markers of endothelial and smooth muscle proteins. Recoupling tumor NOS activity results in vascular normalization observed as reduced tumor hypoxia, improved tumor percentage of HbO2 and perfusion, as well as increased pericyte coverage of tumor blood vessels. The normalized vasculature and improved tumor oxygenation led to a greater than 2-fold increase in radiation-induced apoptosis compared with radiation or SP alone. High-performance liquid chromatography analysis of tumor doxorubicin levels showed a greater than 50% increase in doxorubicin uptake and a synergistic effect on tumor cell apoptosis. This study highlights for the first time the importance of NOS uncoupling and endothelial dysfunction in the development of tumor vasculature and presents a new approach for improving the tumoricidal efficacies of chemotherapy and radiotherapy.
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Affiliation(s)
- Christopher S Rabender
- Department of Radiation Oncology (C.S.R., N.B., A.A., R.B.M.) and Center for Molecular Imaging (G.S., J.Z.), Virginia Commonwealth University, Richmond, Virginia
| | - Ninu Bruno
- Department of Radiation Oncology (C.S.R., N.B., A.A., R.B.M.) and Center for Molecular Imaging (G.S., J.Z.), Virginia Commonwealth University, Richmond, Virginia
| | - Asim Alam
- Department of Radiation Oncology (C.S.R., N.B., A.A., R.B.M.) and Center for Molecular Imaging (G.S., J.Z.), Virginia Commonwealth University, Richmond, Virginia
| | - Gobalakrishnan Sundaresan
- Department of Radiation Oncology (C.S.R., N.B., A.A., R.B.M.) and Center for Molecular Imaging (G.S., J.Z.), Virginia Commonwealth University, Richmond, Virginia
| | - Jamal Zweit
- Department of Radiation Oncology (C.S.R., N.B., A.A., R.B.M.) and Center for Molecular Imaging (G.S., J.Z.), Virginia Commonwealth University, Richmond, Virginia
| | - Ross B Mikkelsen
- Department of Radiation Oncology (C.S.R., N.B., A.A., R.B.M.) and Center for Molecular Imaging (G.S., J.Z.), Virginia Commonwealth University, Richmond, Virginia
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44
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Zullino S, Simoncini T. Impact of selective serotonin reuptake inhibitors (SSRIs) during pregnancy and lactation: a focus on short and long-term vascular effects. Vascul Pharmacol 2018; 108:74-76. [PMID: 29803894 DOI: 10.1016/j.vph.2018.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
SSRIs are the first choice for the treatment of mood disorders during pregnancy and lactation. Despite the known side effects, the benefits/risks balance suggests their use. Hypertensive disorders of pregnancy (HDP) and Intrauterine growth restriction (IUGR) are the main vascular effects of these drugs, with mechanisms that involves endothelial dysfunction in feto-placental system. These data are supported by animal models, even if
preliminary findings are not yet adequately supported by molecular and clinical data.
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Affiliation(s)
- S Zullino
- Department of Experimental and Clinical Medicine, Division of Obstetrics and Gynecology, University of Pisa, Italy.
| | - T Simoncini
- Department of Experimental and Clinical Medicine, Division of Obstetrics and Gynecology, University of Pisa, Italy
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45
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Wang J, Zhou JJ, Robertson GR, Lee VW. Vitamin D in Vascular Calcification: A Double-Edged Sword? Nutrients 2018; 10:nu10050652. [PMID: 29786640 PMCID: PMC5986531 DOI: 10.3390/nu10050652] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 05/15/2018] [Accepted: 05/17/2018] [Indexed: 01/13/2023] Open
Abstract
Vascular calcification (VC) as a manifestation of perturbed mineral balance, is associated with aging, diabetes and kidney dysfunction, as well as poorer patient outcomes. Due to the current limited understanding of the pathophysiology of vascular calcification, the development of effective preventative and therapeutic strategies remains a significant clinical challenge. Recent evidence suggests that traditional risk factors for cardiovascular disease, such as left ventricular hypertrophy and dyslipidaemia, fail to account for clinical observations of vascular calcification. Therefore, more complex underlying processes involving physiochemical changes to mineral balance, vascular remodelling and perturbed hormonal responses such as parathyroid hormone (PTH) and fibroblast growth factor 23 (FGF-23) are likely to contribute to VC. In particular, VC resulting from modifications to calcium, phosphate and vitamin D homeostasis has been recently elucidated. Notably, deregulation of vitamin D metabolism, dietary calcium intake and renal mineral handling are associated with imbalances in systemic calcium and phosphate levels and endothelial cell dysfunction, which can modulate both bone and soft tissue calcification. This review addresses the current understanding of VC pathophysiology, with a focus on the pathogenic role of vitamin D that has provided new insights into the mechanisms of VC.
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Affiliation(s)
- Jeffrey Wang
- Centre for Transplantation and Renal Research, Westmead Institute of Medical Research, Westmead, NSW 2145, Australia.
| | - Jimmy J Zhou
- Centre for Transplantation and Renal Research, Westmead Institute of Medical Research, Westmead, NSW 2145, Australia.
- Centre for Kidney Research, Children's Hospital at Westmead, Westmead, NSW 2145, Australia.
| | | | - Vincent W Lee
- Centre for Transplantation and Renal Research, Westmead Institute of Medical Research, Westmead, NSW 2145, Australia.
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46
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Packer M. Have we really demonstrated the cardiovascular safety of anti-hyperglycaemic drugs? Rethinking the concepts of macrovascular and microvascular disease in type 2 diabetes. Diabetes Obes Metab 2018; 20:1089-1095. [PMID: 29316137 DOI: 10.1111/dom.13207] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 12/12/2017] [Accepted: 12/22/2017] [Indexed: 02/06/2023]
Abstract
A primary goal of the treatment of type 2 mellitus is the prevention of morbidity and mortality associated with cardiovascular disease; however, anti-hyperglycaemic drugs have the capacity to cause deleterious effects on the circulation, a risk that is not adequately reflected by the endpoints selected for emphasis in large-scale clinical trials that are designed to evaluate cardiovascular safety. The primary endpoint of the large-scale studies mandated by regulatory authorities focuses only on 3 to 4 events that depict only a limited view of the circulatory system. One of the most serious adverse effects of many glucose-lowering drugs is new-onset or worsening heart failure. Most antidiabetic drugs can aggravate heart failure because they exert anti-natriuretic actions, and possibly, adverse effects on the myocardium. In addition, certain anti-hyperglycaemic agents may worsen peripheral vascular disease and trigger cardiac arrhythmias that may lead to sudden death. Initiation of treatment with antidiabetic medications may also cause deterioration of the function of the kidneys, retina and peripheral nerves, which are typically regarded as reflecting microvascular disease. The current confusion about the cardiovascular effects of glucose-lowering drugs may be exacerbated by conceptual uncertainties about the classification of large and small vessel disease in determining the clinical course of diabetes. Physicians should not be falsely reassured by claims that a new treatment appears to have passed a narrowly defined regulatory test. The management of people with diabetes often carries with it the risk of important cardiovascular consequences, even for drugs that do not overtly increase the risk of myocardial infarction or stroke.
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Affiliation(s)
- Milton Packer
- Baylor Heart and Vascular Institute, Baylor University Medical Center, Dallas, Texas
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47
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Petrie JR, Guzik TJ, Touyz RM. Diabetes, Hypertension, and Cardiovascular Disease: Clinical Insights and Vascular Mechanisms. Can J Cardiol 2018; 34:575-584. [PMID: 29459239 PMCID: PMC5953551 DOI: 10.1016/j.cjca.2017.12.005] [Citation(s) in RCA: 743] [Impact Index Per Article: 123.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 12/11/2022] Open
Abstract
Hypertension and type 2 diabetes are common comorbidities. Hypertension is twice as frequent in patients with diabetes compared with those who do not have diabetes. Moreover, patients with hypertension often exhibit insulin resistance and are at greater risk of diabetes developing than are normotensive individuals. The major cause of morbidity and mortality in diabetes is cardiovascular disease, which is exacerbated by hypertension. Accordingly, diabetes and hypertension are closely interlinked because of similar risk factors, such as endothelial dysfunction, vascular inflammation, arterial remodelling, atherosclerosis, dyslipidemia, and obesity. There is also substantial overlap in the cardiovascular complications of diabetes and hypertension related primarily to microvascular and macrovascular disease. Common mechanisms, such as upregulation of the renin-angiotensin-aldosterone system, oxidative stress, inflammation, and activation of the immune system likely contribute to the close relationship between diabetes and hypertension. In this article we discuss diabetes and hypertension as comorbidities and discuss the pathophysiological features of vascular complications associated with these conditions. We also highlight some vascular mechanisms that predispose to both conditions, focusing on advanced glycation end products, oxidative stress, inflammation, the immune system, and microRNAs. Finally, we provide some insights into current therapies targeting diabetes and cardiovascular complications and introduce some new agents that may have vasoprotective therapeutic potential in diabetes.
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Affiliation(s)
- John R Petrie
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom
| | - Tomasz J Guzik
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom
| | - Rhian M Touyz
- Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom.
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48
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Abstract
Interventions to restore blood vessel stability could improve health outcomes
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Affiliation(s)
- Martin A Schwartz
- Yale Cardiovascular Research Center, 300 George Street, New Haven, CT 06511, USA.
- Departments of Medicine (Cardiology) and Cell Biology, Yale School of Medicine, New Haven, CT, USA
- Department of Biomedical Engineering, Yale University, New Haven, CT, USA
| | | | - Michael Simons
- Yale Cardiovascular Research Center, 300 George Street, New Haven, CT 06511, USA
- Departments of Medicine (Cardiology) and Cell Biology, Yale School of Medicine, New Haven, CT, USA
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49
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Abstract
The frequency of prediabetes is increasing as the prevalence of obesity rises worldwide. In prediabetes, hyperglycemia, insulin resistance, and inflammation and metabolic derangements associated with concomitant obesity cause endothelial vasodilator and fibrinolytic dysfunction, leading to increased risk of cardiovascular and renal disease. Importantly, the microvasculature affects insulin sensitivity by affecting the delivery of insulin and glucose to skeletal muscle; thus, endothelial dysfunction and extracellular matrix remodeling promote the progression from prediabetes to diabetes mellitus. Weight loss is the mainstay of treatment in prediabetes, but therapies that improved endothelial function and vasodilation may not only prevent cardiovascular disease but also slow progression to diabetes mellitus.
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Affiliation(s)
- David H Wasserman
- From the Departments of Molecular Physiology and Biophysics (D.H.W.) and Medicine (T.J.W., N.J.B.), Vanderbilt University Medical Center, Nashville, TN
| | - Thomas J Wang
- From the Departments of Molecular Physiology and Biophysics (D.H.W.) and Medicine (T.J.W., N.J.B.), Vanderbilt University Medical Center, Nashville, TN
| | - Nancy J Brown
- From the Departments of Molecular Physiology and Biophysics (D.H.W.) and Medicine (T.J.W., N.J.B.), Vanderbilt University Medical Center, Nashville, TN.
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50
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Dhayananth K, Narasimhan A. Evaluation of hemodynamic performance of total cavopulmonary connection (TCPC) with porous inserts. Int J Numer Method Biomed Eng 2018; 34:e2937. [PMID: 29116689 DOI: 10.1002/cnm.2937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 09/29/2017] [Accepted: 10/24/2017] [Indexed: 06/07/2023]
Abstract
Infants born with univentricular heart disease undergo Fontan surgery to establish separate systemic and pulmonary circulations. This surgery results in better blood circulation across a single ventricle that supplies oxygenated blood to the body and passively returns venous blood to the lungs through the total cavopulmonary connection (TCPC). Reducing the pressure drop across the TCPC during Fontan circulation helps in reducing the work load of univentricular heart, and various designs have been proposed for this purpose. The goal of this work is to analyze the effect of placing a porous insert at an appropriate position in the pulmonary artery, on the pressure drop across the TCPC. A 3D computational model of a total TCPC connection provided with a porous insert is developed and solved by finite volume method, under assumptions of steady, laminar, and Newtonian flows. The effects of the porous medium properties-porosity and permeability-across the connection, are analyzed. Compared to the no-porous medium case, TCPC with the porous medium insert exhibits a maximum reduction of 27% in energy loss for the flow range studied. The porous medium used in TCPC connection lowers the energy dissipation by curtailing the flow recirculation zones across the connection. The influences of the diameter of the blood vessel, total cardiac output, and the thickness, permeability, and position of porous media on energy loss are analyzed. The criteria to select the porous medium properties and position for a given Fontan geometry are also determined.
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Affiliation(s)
- K Dhayananth
- Heat Transfer and Thermal Power Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Arunn Narasimhan
- Heat Transfer and Thermal Power Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
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