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Henckel MM, Chun JH, Knaub LA, Pott GB, James GE, Hunter KS, Shandas R, Walker LA, Reusch JEB, Keller AC. Perivascular adipose tissue remodeling impairs vasoreactivity in thermoneutral-housed rats. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.09.593330. [PMID: 38798439 PMCID: PMC11118269 DOI: 10.1101/2024.05.09.593330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Objective Vascular pathology, characterized by impaired vasoreactivity and mitochondrial respiration, differs between the sexes. Housing rats under thermoneutral (TN) conditions causes vascular dysfunction and perturbed metabolism. We hypothesized that perivascular adipose tissue (PVAT), a vasoregulatory adipose depot with brown adipose tissue (BAT) phenotype, remodels to a white adipose (WAT) phenotype in rats housed at TN, driving diminished vasoreactivity in a sex-dependent manner. Methods Male and female Wistar rats were housed at either room temperature (RT) or TN. Endpoints included changes in PVAT morphology, vasoreactivity in vessels with intact PVAT or transferred to PVAT of the oppositely-housed animal, vessel stiffness, vessel mitochondrial respiration and cellular signaling. Results Remodeling of PVAT was observed in rats housed at TN; animals in this environment showed PVAT whitening and displayed diminished aortae vasodilation (p<0.05), different between the sexes. Juxtaposing PVAT from RT rats onto aortae from TN rats in females corrected vasodilation (p<0.05); this did not occur in males. In aortae of all animals housed at TN, mitochondrial respiration was significantly diminished in lipid substrate experiments (p<0.05), and there was significantly less expression of peNOS (p<0.001). Conclusions These data are consistent with TN-induced remodeling of PVAT, notably associated with sex-specific blunting of vasoreactivity, diminished mitochondrial respiration, and altered cellular signaling.
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Affiliation(s)
- Melissa M Henckel
- Division of Endocrinology, Metabolism & Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
- Rocky Mountain Regional VA Medical Center, Aurora, CO 80045
| | - Ji Hye Chun
- Division of Endocrinology, Metabolism & Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
- Rocky Mountain Regional VA Medical Center, Aurora, CO 80045
| | - Leslie A Knaub
- Division of Endocrinology, Metabolism & Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
- Rocky Mountain Regional VA Medical Center, Aurora, CO 80045
| | - Gregory B Pott
- Division of Endocrinology, Metabolism & Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
- Rocky Mountain Regional VA Medical Center, Aurora, CO 80045
| | | | - Kendall S Hunter
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Robin Shandas
- Department of Bioengineering, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Lori A Walker
- Division of Cardiology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Jane E-B Reusch
- Division of Endocrinology, Metabolism & Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
- Rocky Mountain Regional VA Medical Center, Aurora, CO 80045
| | - Amy C Keller
- Division of Endocrinology, Metabolism & Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
- Rocky Mountain Regional VA Medical Center, Aurora, CO 80045
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Jüttner AA, Ataei Ataabadi E, Golshiri K, de Vries R, Garrelds IM, Danser AHJ, Visser JA, Roks AJM. Adiponectin secretion by perivascular adipose tissue supports impaired vasodilation in a mouse model of accelerated vascular smooth muscle cell and adipose tissue aging. Vascul Pharmacol 2024; 154:107281. [PMID: 38320678 DOI: 10.1016/j.vph.2024.107281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 01/26/2024] [Accepted: 02/02/2024] [Indexed: 02/08/2024]
Abstract
OBJECTIVE Perivascular adipose tissue (PVAT) function during aging has not been investigated in detail so far and its effect on vasodilation remains to be fully elucidated. The aim of this study was to investigate endothelium-dependent vasodilation of thoracic aorta in a mouse model of accelerated, selective vascular smooth muscle and PVAT aging, induced by SM22α-Cre-driven genetic deletion of the endonuclease ERCC1 (SMC-KO mice) versus healthy littermates (LM). We hypothesized that PVAT enhances vasodilation in LM, possibly through adiponectin secretion, which might be compromised in SMC-KO animals. METHODS Thoracic aorta was isolated from SMC-KO animals and LM and segments with and without PVAT were mounted in wire myography setups. The endothelium-dependent vasodilation was assessed via acetylcholine dose-response curves and pathway contribution was studied. Moreover, adiponectin secretion was measured after stimulating the aortic segments with PVAT with acetylcholine. RESULTS Adiponectin, secreted by PVAT, led to increased NO-contribution to endothelium-dependent vasodilation in healthy LM, although this did not increase maximum relaxation due to loss of EDH. Endothelium-dependent vasodilation was decreased in SMC-KO animals due to reduced NO-contribution and complete EDH loss. Despite strong lipodystrophy the PVAT partially compensated for lost vasodilation in SMC-KO. LM PVAT contained acetylcholinesterase that attenuated acetylcholine responses. This was lost in SMC-KO. CONCLUSIONS PVAT-derived adiponectin is able to partially compensate for age-related decline in NO-mediated vasodilation, even during strong lipodystrophy, in conditions of absence of compensating EDH. In aorta with healthy PVAT acetylcholinesterase modulates vascular tone, but this is lost during aging, further compensating for decreased acetylcholine responsiveness. Thus, preservation of adiponectin levels, through relatively increased production in lipodystrophic PVAT, and reduction of cholinesterase might be regulatory mechanisms of the PVAT to preserve cholinergic vasodilation during aging.
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Affiliation(s)
- A A Jüttner
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
| | - E Ataei Ataabadi
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
| | - K Golshiri
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
| | - R de Vries
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
| | - I M Garrelds
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
| | - A H J Danser
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
| | - J A Visser
- Division of Endocrinology, Department of Internal Medicine, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
| | - A J M Roks
- Division of Vascular Medicine and Pharmacology, Department of Internal Medicine, Erasmus MC, University Medical Center, Wytemaweg 80, 3015 CN Rotterdam, the Netherlands.
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Tong Y, Zuo Z, Li X, Li M, Wang Z, Guo X, Wang X, Sun Y, Chen D, Zhang Z. Protective role of perivascular adipose tissue in the cardiovascular system. Front Endocrinol (Lausanne) 2023; 14:1296778. [PMID: 38155947 PMCID: PMC10753176 DOI: 10.3389/fendo.2023.1296778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 11/27/2023] [Indexed: 12/30/2023] Open
Abstract
This review provides an overview of the key role played by perivascular adipose tissue (PVAT) in the protection of cardiovascular health. PVAT is a specific type of adipose tissue that wraps around blood vessels and has recently emerged as a critical factor for maintenance of vascular health. Through a profound exploration of existing research, this review sheds light on the intricate structural composition and cellular origins of PVAT, with a particular emphasis on combining its regulatory functions for vascular tone, inflammation, oxidative stress, and endothelial function. The review then delves into the intricate mechanisms by which PVAT exerts its protective effects, including the secretion of diverse adipokines and manipulation of the renin-angiotensin complex. The review further examines the alterations in PVAT function and phenotype observed in several cardiovascular diseases, including atherosclerosis, hypertension, and heart failure. Recognizing the complex interactions of PVAT with the cardiovascular system is critical for pursuing breakthrough therapeutic strategies that can target cardiovascular disease. Therefore, this review aims to augment present understanding of the protective role of PVAT in cardiovascular health, with a special emphasis on elucidating potential mechanisms and paving the way for future research directions in this evolving field.
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Affiliation(s)
- Yi Tong
- Center for Cardiovascular Medicine, The First Hospital of Jilin University, Changchun, China
| | - Zheng Zuo
- Center for Cardiovascular Medicine, The First Hospital of Jilin University, Changchun, China
| | - Xinqi Li
- Center for Cardiovascular Medicine, The Second Hospital of Jilin University, Changchun, China
| | - Minghua Li
- Center for Cardiovascular Medicine, The First Hospital of Jilin University, Changchun, China
| | - Zhenggui Wang
- Center for Cardiovascular Medicine, The First Hospital of Jilin University, Changchun, China
| | - Xiaoxue Guo
- Center for Cardiovascular Medicine, The First Hospital of Jilin University, Changchun, China
| | - Xishu Wang
- Center for Cardiovascular Medicine, The First Hospital of Jilin University, Changchun, China
| | - Ying Sun
- Center for Cardiovascular Medicine, The First Hospital of Jilin University, Changchun, China
| | - Dongmei Chen
- Center for Cardiovascular Medicine, The First Hospital of Jilin University, Changchun, China
| | - Zhiguo Zhang
- Center for Cardiovascular Medicine, The First Hospital of Jilin University, Changchun, China
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Peng H, Lv Y, Li C, Cheng Z, He S, Wang C, Liu J. Cathepsin S inhibition in dendritic cells prevents Th17 cell differentiation in perivascular adipose tissues following vascular injury in diabetic rats. J Biochem Mol Toxicol 2023; 37:e23419. [PMID: 37341014 DOI: 10.1002/jbt.23419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 05/25/2023] [Accepted: 06/08/2023] [Indexed: 06/22/2023]
Abstract
In the context of diabetes mellitus (DM), the circulating cathepsin S (CTSS) level is significantly higher in the cardiovascular disease group. Therefore, this study was designed to investigate the role of CTSS in restenosis following carotid injury in diabetic rats. To induce DM, 60 mg/kg of streptozotocin (STZ) in citrate buffer was injected intraperitoneally into Sprague-Dawley rats. After successful modeling of DM, wire injury of the rat carotid artery was performed, followed by adenovirus transduction. Levels of blood glucose and Th17 cell surface antigens including ROR-γt, IL-17A, IL-17F, IL-22, and IL-23 in perivascular adipose tissues (PVAT) were evaluated. For in vitro analysis, human dendritic cells (DCs) were treated with 5.6-25 mM glucose for 24 h. The morphology of DCs was observed using an optical microscope. CD4+ T cells derived from human peripheral blood mononuclear cells were cocultured with DCs for 5 days. Levels of IL-6, CTSS, ROR-γt, IL-17A, IL-17F, IL-22 and IL-23 were measured. Flow cytometry was conducted to detect DC surface biomarkers (CD1a, CD83, and CD86) and Th17 cell differentiation. The collected DCs presented a treelike shape and were positive for CD1a, CD83, and CD86. Glucose impaired DC viability at the dose of 35 mM. Glucose treatment led to an increase in CTSS and IL-6 expression in DCs. Glucose-treated DCs promoted the differentiation of Th17 cells. CTSS depletion downregulated IL-6 expression and inhibited Th17 cell differentiation in vitro and in vivo. CTSS inhibition in DCs inhibits Th17 cell differentiation in PVAT tissues from diabetic rats following vascular injury.
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Affiliation(s)
- Hongyu Peng
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Yuan Lv
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Changjiang Li
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Zichao Cheng
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Songyuan He
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Cong Wang
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Jinghua Liu
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
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Zhang K, Zhang J, Kan C, Tian H, Ma Y, Huang N, Han F, Hou N, Sun X. Role of dysfunctional peri-organ adipose tissue in metabolic disease. Biochimie 2023; 212:12-20. [PMID: 37019205 DOI: 10.1016/j.biochi.2023.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 03/21/2023] [Accepted: 03/30/2023] [Indexed: 04/07/2023]
Abstract
Metabolic disease is a complex disorder defined by a group with interrelated factors. There is growing evidence that obesity can lead to a variety of metabolic diseases, including diabetes and cardiovascular disease. Excessive adipose tissue (AT) deposition and ectopic accumulation can lead to increased peri-organ AT thickness. Dysregulation of peri-organ (perivascular, perirenal, and epicardial) AT is strongly associated with metabolic disease and its complications. The mechanisms include secretion of cytokines, activation of immunocytes, infiltration of inflammatory cells, involvement of stromal cells, and abnormal miRNA expression. This review discusses the associations and mechanisms by which various types of peri-organ AT affect metabolic diseases while addressing it as a potential future treatment strategy.
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Affiliation(s)
- Kexin Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Jingwen Zhang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Chengxia Kan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Hongzhan Tian
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Yanhui Ma
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China; Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Na Huang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Fang Han
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China; Department of Pathology, Affiliated Hospital of Weifang Medical University, Weifang, China
| | - Ningning Hou
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China.
| | - Xiaodong Sun
- Department of Endocrinology and Metabolism, Affiliated Hospital of Weifang Medical University, Weifang, China; Clinical Research Center, Affiliated Hospital of Weifang Medical University, Weifang, China.
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Mu WJ, Song YJ, Yang LJ, Qian SW, Yang QQ, Liu Y, Tang QQ, Tang Y. Bone morphogenetic protein 4 in perivascular adipose tissue ameliorates hypertension through regulation of angiotensinogen. Front Cardiovasc Med 2022; 9:1038176. [PMID: 36457800 PMCID: PMC9707298 DOI: 10.3389/fcvm.2022.1038176] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 10/31/2022] [Indexed: 02/18/2024] Open
Abstract
BACKGROUND Perivascular adipose tissue (PVAT), an active endocrine organ, exerts direct effect on vascular tone through paracrine. Activation of PVAT metabolism plays an inhibitory role in atherosclerosis via secreting relaxing factors. The present studies were designed to investigate the role of PVAT metabolism in regulation of hypertension. MATERIALS AND METHODS Apolipoprotein E (ApoE) knockout mice with BMP4 knockout in adipose tissue or brown adipose tissue (aP2-DKO or UCP1-DKO, respectively) were used for exploring the role of impaired PVAT metabolism in hypertension. Vascular function was assessed using wire myography. The potential regulatory factor of vascular function was explored using qPCR and ELISA and further confirmed in perivascular fat cell line. RESULTS Knockout of BMP4 either in adipose tissue or specifically in BAT aggravates high-fat diet (HFD, 40% fat)-induced hypertension and endothelial dysfunction in ApoE-/- mice. In the meanwhile, deficiency of BMP4 also aggravates Ang II (angiotensin II) -induced hypertension and vascular remodeling in ApoE-/- mice. Moreover, deficiency of BMP4 inhibits NO release and induces ROS production. In vitro system, aortic rings pretreated with PVAT extracts from BMP4-DKO mice showed increased vasoconstriction and reduced endothelial-dependent relaxation compared with the controls. We further demonstrated that PVAT of BMP4-DKO mice expressed higher level of angiotensinogen (AGT) and Ang II compared with the controls. CONCLUSION Impaired PVAT metabolism aggravates hypertension, and this effect is dependent on the activation of local renin-angiotensin-aldosterone system (RAAS). The results of this study first demonstrate the regulatory role of PVAT metabolism in hypertension.
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Affiliation(s)
| | | | | | | | | | | | - Qi-Qun Tang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yan Tang
- Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, China
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7
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Kotanidis CP, Xie C, Alexander D, Rodrigues JCL, Burnham K, Mentzer A, O'Connor D, Knight J, Siddique M, Lockstone H, Thomas S, Kotronias R, Oikonomou EK, Badi I, Lyasheva M, Shirodaria C, Lumley SF, Constantinides B, Sanderson N, Rodger G, Chau KK, Lodge A, Tsakok M, Gleeson F, Adlam D, Rao P, Indrajeet D, Deshpande A, Bajaj A, Hudson BJ, Srivastava V, Farid S, Krasopoulos G, Sayeed R, Ho LP, Neubauer S, Newby DE, Channon KM, Deanfield J, Antoniades C. Constructing custom-made radiotranscriptomic signatures of vascular inflammation from routine CT angiograms: a prospective outcomes validation study in COVID-19. Lancet Digit Health 2022; 4:e705-e716. [PMID: 36038496 PMCID: PMC9417284 DOI: 10.1016/s2589-7500(22)00132-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 06/16/2022] [Accepted: 07/05/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Direct evaluation of vascular inflammation in patients with COVID-19 would facilitate more efficient trials of new treatments and identify patients at risk of long-term complications who might respond to treatment. We aimed to develop a novel artificial intelligence (AI)-assisted image analysis platform that quantifies cytokine-driven vascular inflammation from routine CT angiograms, and sought to validate its prognostic value in COVID-19. METHODS For this prospective outcomes validation study, we developed a radiotranscriptomic platform that uses RNA sequencing data from human internal mammary artery biopsies to develop novel radiomic signatures of vascular inflammation from CT angiography images. We then used this platform to train a radiotranscriptomic signature (C19-RS), derived from the perivascular space around the aorta and the internal mammary artery, to best describe cytokine-driven vascular inflammation. The prognostic value of C19-RS was validated externally in 435 patients (331 from study arm 3 and 104 from study arm 4) admitted to hospital with or without COVID-19, undergoing clinically indicated pulmonary CT angiography, in three UK National Health Service (NHS) trusts (Oxford, Leicester, and Bath). We evaluated the diagnostic and prognostic value of C19-RS for death in hospital due to COVID-19, did sensitivity analyses based on dexamethasone treatment, and investigated the correlation of C19-RS with systemic transcriptomic changes. FINDINGS Patients with COVID-19 had higher C19-RS than those without (adjusted odds ratio [OR] 2·97 [95% CI 1·43-6·27], p=0·0038), and those infected with the B.1.1.7 (alpha) SARS-CoV-2 variant had higher C19-RS values than those infected with the wild-type SARS-CoV-2 variant (adjusted OR 1·89 [95% CI 1·17-3·20] per SD, p=0·012). C19-RS had prognostic value for in-hospital mortality in COVID-19 in two testing cohorts (high [≥6·99] vs low [<6·99] C19-RS; hazard ratio [HR] 3·31 [95% CI 1·49-7·33], p=0·0033; and 2·58 [1·10-6·05], p=0·028), adjusted for clinical factors, biochemical biomarkers of inflammation and myocardial injury, and technical parameters. The adjusted HR for in-hospital mortality was 8·24 (95% CI 2·16-31·36, p=0·0019) in patients who received no dexamethasone treatment, but 2·27 (0·69-7·55, p=0·18) in those who received dexamethasone after the scan, suggesting that vascular inflammation might have been a therapeutic target of dexamethasone in COVID-19. Finally, C19-RS was strongly associated (r=0·61, p=0·00031) with a whole blood transcriptional module representing dysregulation of coagulation and platelet aggregation pathways. INTERPRETATION Radiotranscriptomic analysis of CT angiography scans introduces a potentially powerful new platform for the development of non-invasive imaging biomarkers. Application of this platform in routine CT pulmonary angiography scans done in patients with COVID-19 produced the radiotranscriptomic signature C19-RS, a marker of cytokine-driven inflammation driving systemic activation of coagulation and responsible for adverse clinical outcomes, which predicts in-hospital mortality and might allow targeted therapy. FUNDING Engineering and Physical Sciences Research Council, British Heart Foundation, Oxford BHF Centre of Research Excellence, Innovate UK, NIHR Oxford Biomedical Research Centre, Wellcome Trust, Onassis Foundation.
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Affiliation(s)
- Christos P Kotanidis
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Cheng Xie
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Donna Alexander
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | | | | | | | - Daniel O'Connor
- Oxford Vaccine Group, Department of Paediatrics, University of Oxford and NIHR Oxford Biomedical Research Centre, Oxford, UK
| | - Julian Knight
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Muhammad Siddique
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK; Caristo Diagnostics Ltd, Oxford, UK
| | - Helen Lockstone
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Sheena Thomas
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Rafail Kotronias
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Evangelos K Oikonomou
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK; Department of Internal Medicine, Yale-New Haven Hospital, Yale School of Medicine, New Haven, CT, USA
| | - Ileana Badi
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Maria Lyasheva
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | | | - Sheila F Lumley
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | | | | | - Gillian Rodger
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Kevin K Chau
- Nuffield Department of Medicine, University of Oxford, Oxford, UK
| | - Archie Lodge
- Medical Sciences Division, University of Oxford, Oxford, UK
| | - Maria Tsakok
- Department of Radiology, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Fergus Gleeson
- Department of Radiology, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - David Adlam
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Praveen Rao
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Das Indrajeet
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Aparna Deshpande
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Amrita Bajaj
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - Benjamin J Hudson
- Department of Radiology, Royal United Hospitals Bath NHS Foundation Trust, Bath, UK
| | | | - Shakil Farid
- Department of Cardiothoracic Surgery, Oxford, UK
| | | | - Rana Sayeed
- Department of Cardiothoracic Surgery, Oxford, UK
| | - Ling-Pei Ho
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Stefan Neubauer
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - David E Newby
- British Heart Foundation Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
| | - Keith M Channon
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK; British Heart Foundation-National Institute of Health Research Cardiovascular Partnership, Oxford NIHR Biomedical Research Centre, Oxford, UK
| | - John Deanfield
- Institute of Cardiovascular Sciences, University College London, London, UK
| | - Charalambos Antoniades
- Acute Multidisciplinary Imaging & Interventional Centre, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK.
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8
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Saenz-Medina J, Muñoz M, Rodriguez C, Contreras C, Sánchez A, Coronado MJ, Ramil E, Santos M, Carballido J, Prieto D. Hyperoxaluria Induces Endothelial Dysfunction in Preglomerular Arteries: Involvement of Oxidative Stress. Cells 2022; 11:cells11152306. [PMID: 35954150 PMCID: PMC9367519 DOI: 10.3390/cells11152306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/15/2022] [Accepted: 07/24/2022] [Indexed: 02/01/2023] Open
Abstract
Urolithiasis is a worldwide problem and a risk factor for kidney injury. Oxidative stress-associated renal endothelial dysfunction secondary to urolithiasis could be a key pathogenic factor, similar to obesity and diabetes-related nephropathy. The aim of the present study was to characterize urolithiasis-related endothelial dysfunction in a hyperoxaluria rat model of renal lithiasis. Experimental approach: Endothelial dysfunction was assessed in preglomerular arteries isolated from control rats and in which 0.75% ethylene glycol was administered in drinking water. Renal interlobar arteries were mounted in microvascular myographs for functional studies; superoxide generation was measured by chemiluminescence and mRNA and protein expression by RT-PCR and immunofluorescence, respectively. Selective inhibitors were used to study the influence of the different ROS sources, xanthine oxidase, COX-2, Nox1, Nox2 and Nox4. Inflammatory vascular response was also studied by measuring the RNAm expression of NF-κB, MCP-1 and TNFα by RT-PCR. Results: Endothelium-dependent vasodilator responses were impaired in the preglomerular arteries of the hyperoxaluric group along with higher superoxide generation in the renal cortex and vascular inflammation developed by MCP-1 and promoted by NF-κB. The xanthine oxidase inhibitor allopurinol restored the endothelial relaxations and returned superoxide generation to basal values. Nox1 and Nox2 mRNA were up-regulated in arteries from the hyperoxaluric group, and Nox1 and Nox2 selective inhibitors also restored the impaired vasodilator responses and normalized NADPH oxidase-dependent higher superoxide values of renal cortex from the hyperoxaluric group. Conclusions: The current data support that hyperoxaluria induces oxidative stress-mediated endothelial dysfunction and inflammatory response in renal preglomerular arteries which is promoted by the xanthine oxidase, Nox1 and Nox2 pathways.
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Affiliation(s)
- Javier Saenz-Medina
- Department of Urology, Puerta de Hierro-Majadahonda University Hospital, 28222 Majadahonda, Spain;
- Department of Medical Specialties and Public Health, King Juan Carlos University, 28933 Madrid, Spain
- Correspondence: (J.S.-M.); (D.P.)
| | - Mercedes Muñoz
- Department of Physiology, Pharmacy Faculty, Complutense University, 28040 Madrid, Spain; (M.M.); (C.R.); (C.C.); (A.S.)
| | - Claudia Rodriguez
- Department of Physiology, Pharmacy Faculty, Complutense University, 28040 Madrid, Spain; (M.M.); (C.R.); (C.C.); (A.S.)
| | - Cristina Contreras
- Department of Physiology, Pharmacy Faculty, Complutense University, 28040 Madrid, Spain; (M.M.); (C.R.); (C.C.); (A.S.)
| | - Ana Sánchez
- Department of Physiology, Pharmacy Faculty, Complutense University, 28040 Madrid, Spain; (M.M.); (C.R.); (C.C.); (A.S.)
| | - María José Coronado
- Confocal Microscopy Facility, Puerta de Hierro-Majadahonda Research Institute, 28222 Majadahonda, Spain;
| | - Elvira Ramil
- Molecular Biology and DNA Sequencing Facility, Puerta de Hierro-Majadahonda Research Institute, 28222 Majadahonda, Spain;
| | - Martin Santos
- Medical and Surgical Research Facility, Puerta de Hierro-Majadahonda Research Institute, 28222 Majadahonda, Spain;
| | - Joaquín Carballido
- Department of Urology, Puerta de Hierro-Majadahonda University Hospital, 28222 Majadahonda, Spain;
| | - Dolores Prieto
- Department of Medical Specialties and Public Health, King Juan Carlos University, 28933 Madrid, Spain
- Correspondence: (J.S.-M.); (D.P.)
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9
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Shridas P, Ji A, Trumbauer AC, Noffsinger VP, Leung SW, Dugan AJ, Thatcher SE, Cassis LA, de Beer FC, Webb NR, Tannock LR. Adipocyte-Derived Serum Amyloid A Promotes Angiotensin II-Induced Abdominal Aortic Aneurysms in Obese C57BL/6J Mice. Arterioscler Thromb Vasc Biol 2022; 42:632-643. [PMID: 35344382 PMCID: PMC9050948 DOI: 10.1161/atvbaha.121.317225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 03/09/2022] [Indexed: 11/16/2022]
Abstract
BACKGROUND Obesity increases the risk for human abdominal aortic aneurysms (AAAs) and enhances Ang II (angiotensin II)-induced AAA formation in C57BL/6J mice. Obesity is also associated with increases in perivascular fat that expresses proinflammatory markers including SAA (serum amyloid A). We previously reported that deficiency of SAA significantly reduces Ang II-induced inflammation and AAA in hyperlipidemic apoE-deficient mice. In this study. we investigated whether adipose tissue-derived SAA plays a role in Ang II-induced AAA in obese C57BL/6J mice. METHODS The development of AAA was compared between male C57BL/6J mice (wild type), C57BL/6J mice lacking SAA1.1, SAA2.1, and SAA3 (TKO); and TKO mice harboring a doxycycline-inducible, adipocyte-specific SAA1.1 transgene (TKO-Tgfat; SAA expressed only in fat). All mice were fed an obesogenic diet and doxycycline to induce SAA transgene expression and infused with Ang II to induce AAA. RESULTS In response to Ang II infusion, SAA expression was significantly increased in perivascular fat of obese C57BL/6J mice. Maximal luminal diameters of the abdominal aorta were determined by ultrasound before and after Ang II infusion, which indicated a significant increase in aortic luminal diameters in wild type and TKO-TGfat mice but not in TKO mice. Adipocyte-specific SAA expression was associated with MMP (matrix metalloproteinase) activity and macrophage infiltration in abdominal aortas of Ang II-infused obese mice. CONCLUSIONS We demonstrate for the first time that SAA deficiency protects obese C57BL/6J mice from Ang II-induced AAA. SAA expression only in adipocytes is sufficient to cause AAA in obese mice infused with Ang II.
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Affiliation(s)
- Preetha Shridas
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Barnstable Brown Diabetes Center (P.S., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Ailing Ji
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
| | - Andrea C Trumbauer
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Victoria P Noffsinger
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
| | - Steve W Leung
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Adam J Dugan
- Biostatistics (A.J.D.), University of Kentucky, Lexington
| | - Sean E Thatcher
- Department of Pharmacology, Temple University, Philadelphia, PA (S.E.T.)
| | - Lisa A Cassis
- Pharmacology and Nutritional Sciences (L.A.C., N.R.W.), University of Kentucky, Lexington
| | - Frederick C de Beer
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Barnstable Brown Diabetes Center (P.S., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Nancy R Webb
- Pharmacology and Nutritional Sciences (L.A.C., N.R.W.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Barnstable Brown Diabetes Center (P.S., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
| | - Lisa R Tannock
- Departments of Internal Medicine (P.S., A.J., V.P.N., S.W.L., F.C.d.B., L.R.T.), University of Kentucky, Lexington
- Saha Cardiovascular Research Center (P.S., A.C.T., S.W.L., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Barnstable Brown Diabetes Center (P.S., F.C.d.B., N.R.W., L.R.T.), University of Kentucky, Lexington
- Department of Veterans Affairs, Lexington, KY (L.R.T.)
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10
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Nakladal D, Sijbesma JWA, Visser LM, Tietge UJF, Slart RHJA, Deelman LE, Henning RH, Hillebrands JL, Buikema H. Perivascular adipose tissue-derived nitric oxide compensates endothelial dysfunction in aged pre-atherosclerotic apolipoprotein E-deficient rats. Vascul Pharmacol 2021; 142:106945. [PMID: 34801679 DOI: 10.1016/j.vph.2021.106945] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 11/05/2021] [Accepted: 11/15/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND AND AIMS Atherosclerosis is a major contributor to global mortality and is accompanied by vascular inflammation and endothelial dysfunction. Perivascular adipose tissue (PVAT) is an established regulator of vascular function with emerging implications in atherosclerosis. We investigated the modulation of aortic relaxation by PVAT in aged rats with apolipoprotein E deficiency (ApoE-/-) fed a high-fat diet as a model of early atherosclerosis. METHODS AND RESULTS ApoE-/- rats (N = 7) and wild-type Sprague-Dawley controls (ApoE+/+, N = 8) received high-fat diet for 51 weeks. Hyperlipidemia was confirmed in ApoE-/- rats by elevated plasma cholesterol (p < 0.001) and triglyceride (p = 0.025) levels. Early atherosclerosis was supported by increased intima/media thickness ratio (p < 0.01) and ED1-positive macrophage influx in ApoE-/- aortic intima (p < 0.001). Inflammation in ApoE-/- PVAT was characteristic by an increased [18F]FDG uptake (p < 0.01), ED1-positive macrophage influx (p = 0.0003), mRNA expression levels of CD68 (p < 0.001) and IL-1β (p < 0.01), and upregulated iNOS protein (p = 0.011). The mRNAs of MCP-1, IL-6 and adiponectin remained unchanged in PVAT. Aortic PVAT volume measured with micro-PET/CT was increased in ApoE-/- rats (p < 0.01). Maximal endothelium-dependent relaxation (EDR) to acetylcholine in ApoE-/- aortic rings without PVAT was severely impaired (p = 0.012) compared with controls, while ApoE-/- aortic rings with PVAT showed higher EDR than controls. All EDR responses were blocked by L-NMMA and the expression of eNOS mRNA was increased in ApoE-/- PVAT (p = 0.035). CONCLUSION Using a rat ApoE-/- model of early atherosclerosis, we capture a novel mechanism by which inflammatory PVAT compensates severe endothelial dysfunction by contributing NO upon cholinergic stimulation.
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Affiliation(s)
- D Nakladal
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713GZ Groningen, the Netherlands.
| | - J W A Sijbesma
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713GZ Groningen, the Netherlands
| | - L M Visser
- Department of Pathology & Medical Biology, Pathology division, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713GZ Groningen, the Netherlands
| | - U J F Tietge
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands; Division of Clinical Chemistry, Department of Laboratory Medicine, Karolinska Institutet, Stockholm, Sweden; Clinical Chemistry, Karolinska University Laboratory, Karolinska University Hospital, SE-141 86 Stockholm, Sweden
| | - R H J A Slart
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713GZ Groningen, the Netherlands; Faculty of Science and Technology Biomedical, Photonic Imaging, University of Twente, Enschede, the Netherlands
| | - L E Deelman
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713GZ Groningen, the Netherlands
| | - R H Henning
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713GZ Groningen, the Netherlands
| | - J L Hillebrands
- Department of Pathology & Medical Biology, Pathology division, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713GZ Groningen, the Netherlands
| | - H Buikema
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713GZ Groningen, the Netherlands
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11
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Kotanidis CP, Antoniades C. Perivascular fat imaging by computed tomography (CT): a virtual guide. Br J Pharmacol 2021; 178:4270-4290. [PMID: 34296764 PMCID: PMC8856184 DOI: 10.1111/bph.15634] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 12/04/2022] Open
Abstract
Imaging in medicine has been revolutionised by technological, computational and research advances over the past decades. Computed tomography (CT), in particular, has seen rapid evolution especially in the field of cardiovascular non-invasive imaging. It is being recognised as the first-line tool for the assessment of stable and unstable disease with diagnostic, prognostic and re-stratification potential. Vascular inflammation is a key component of the atherosclerotic process and has been shown to induce molecular, transcriptional and structural changes to perivascular adipose tissue (PVAT). Being a diverse structure itself, PVAT surrounds the human vessels and is characterised by a highly rich secretome, including, amongst others, adipokines, cytokines, gaseous messengers and miRNAs It is implicated in a bidirectional interplay with the adjacent vascular wall, affecting and being affected by aspects of its biology, mainly inflammation. In this review, we discuss the current status of cardiac CT in imaging vascular inflammation through PVAT phenotyping. LINKED ARTICLES: This article is part of a themed issue on Molecular imaging - visual themed issue. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.21/issuetoc.
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Affiliation(s)
- Christos P. Kotanidis
- Division of Cardiovascular Medicine, Radcliffe Department of MedicineUniversity of OxfordOxfordUK
| | - Charalambos Antoniades
- Division of Cardiovascular Medicine, Radcliffe Department of MedicineUniversity of OxfordOxfordUK
- Acute Vascular Imaging Centre, Investigational MedicineUniversity of OxfordOxfordUK
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12
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Wang M, Xing J, Liu M, Gao M, Liu Y, Li X, Hu L, Zhao X, Liao J, Liu G, Dong J. Deletion of Seipin Attenuates Vascular Function and the Anticontractile Effect of Perivascular Adipose Tissue. Front Cardiovasc Med 2021; 8:706924. [PMID: 34409079 PMCID: PMC8365033 DOI: 10.3389/fcvm.2021.706924] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 07/13/2021] [Indexed: 11/13/2022] Open
Abstract
Seipin locates in endoplasmic reticulum (ER) and regulates adipogenesis and lipid droplet formation. Deletion of Seipin has been well-demonstrated to cause severe general lipodystrophy, however, its role in maintaining perivascular adipose tissue (PVAT) and vascular homeostasis has not been directly assessed. In the present study, we investigated the role of Seipin in mediating the anticontractile effect of PVAT and vascular function. Seipin expression in PVAT and associated vessels were detected by qPCR and western-blot. Seipin is highly expressed in PVAT, but hardly in vessels. Structural and functional alterations of PVAT and associated vessels were compared between Seipin−/− mice and WT mice. In Seipin−/− mice, aortic and mesenteric PVAT were significantly reduced in mass and adipose-derived relaxing factors (ADRFs) secretion, but increased in macrophage infiltration and ER stress, as compared with those in WT mice. Aortic and mesenteric artery rings from WT and Seipin−/− mice were mounted on a wire myograph. Vasoconstriction and vasodilation were studied in vessels with and without PVAT. WT PVAT augmented relaxation but not Seipin−/− PVAT, which suggest impaired anticontractile function in PVAT of Seipin−/− mice. Thoracic aorta and mesenteric artery from Seipin−/− mice had impaired contractility in response to phenylephrine (PHE) and relaxation to acetylcholine (Ach). In conclusion, Seipin deficiency caused abnormalities in PVAT morphology and vascular functions. Our data demonstrated for the first time that Seipin plays a critical role in maintaining PVAT function and vascular homeostasis.
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Affiliation(s)
- Mengyu Wang
- Department of Cardiology, Henan Key Laboratory of Hereditary Cardiovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Junhui Xing
- Department of Cardiology, Henan Key Laboratory of Hereditary Cardiovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Mengduan Liu
- Department of Cardiology, Henan Key Laboratory of Hereditary Cardiovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Mingming Gao
- Laboratory of Lipid Metabolism, Hebei Medical University, Shijiazhuang, China
| | - Yangyang Liu
- Department of Cardiology, Henan Key Laboratory of Hereditary Cardiovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaowei Li
- Department of Cardiology, Henan Key Laboratory of Hereditary Cardiovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Liang Hu
- Department of Cardiology, Henan Key Laboratory of Hereditary Cardiovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaoyan Zhao
- Department of Cardiology, Henan Key Laboratory of Hereditary Cardiovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jiawei Liao
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - George Liu
- Key Laboratory of Molecular Cardiovascular Sciences, Peking University Health Science Center, School of Basic Medical Sciences, Institute of Cardiovascular Sciences, Ministry of Education, Beijing, China
| | - Jianzeng Dong
- Department of Cardiology, Henan Key Laboratory of Hereditary Cardiovascular Diseases, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Department of Cardiology, National Clinical Research Centre for Cardiovascular Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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13
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Ruggiero AD, Key CCC, Kavanagh K. Adipose Tissue Macrophage Polarization in Healthy and Unhealthy Obesity. Front Nutr 2021; 8:625331. [PMID: 33681276 PMCID: PMC7925825 DOI: 10.3389/fnut.2021.625331] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 01/05/2021] [Indexed: 12/12/2022] Open
Abstract
Over 650 million adults are obese (body mass index ≥ 30 kg/m2) worldwide. Obesity is commonly associated with several comorbidities, including cardiovascular disease and type II diabetes. However, compiled estimates suggest that from 5 to 40% of obese individuals do not experience metabolic or cardiovascular complications. The existence of the metabolically unhealthy obese (MUO) and the metabolically healthy obese (MHO) phenotypes suggests that underlying differences exist in both tissues and overall systemic function. Macrophage accumulation in white adipose tissue (AT) in obesity is typically associated with insulin resistance. However, as plastic cells, macrophages respond to stimuli in their microenvironments, altering their polarization between pro- and anti-inflammatory phenotypes, depending on the state of their surroundings. The dichotomous nature of MHO and MUO clinical phenotypes suggests that differences in white AT function dictate local inflammatory responses by driving changes in macrophage subtypes. As obesity requires extensive AT expansion, we posit that remodeling capacity with adipose expansion potentiates favorable macrophage profiles in MHO as compared with MUO individuals. In this review, we discuss how differences in adipogenesis, AT extracellular matrix deposition and breakdown, and AT angiogenesis perpetuate altered AT macrophage profiles in MUO compared with MHO. We discuss how non-autonomous effects of remote organ systems, including the liver, gastrointestinal tract, and cardiovascular system, interact with white adipose favorably in MHO. Preferential AT macrophage profiles in MHO stem from sustained AT function and improved overall fitness and systemic health.
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Affiliation(s)
- Alistaire D Ruggiero
- Section on Comparative Medicine, Department of Pathology, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Chia-Chi Chuang Key
- Section on Molecular Medicine, Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, NC, United States
| | - Kylie Kavanagh
- Section on Comparative Medicine, Department of Pathology, Wake Forest University School of Medicine, Winston-Salem, NC, United States.,Department of Biomedicine, University of Tasmania, Hobart, TAS, Australia
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14
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Association of Gut Hormones and Microbiota with Vascular Dysfunction in Obesity. Nutrients 2021; 13:nu13020613. [PMID: 33668627 PMCID: PMC7918888 DOI: 10.3390/nu13020613] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/25/2021] [Accepted: 02/10/2021] [Indexed: 02/08/2023] Open
Abstract
In the past few decades, obesity has reached pandemic proportions. Obesity is among the main risk factors for cardiovascular diseases, since chronic fat accumulation leads to dysfunction in vascular endothelium and to a precocious arterial stiffness. So far, not all the mechanisms linking adipose tissue and vascular reactivity have been explained. Recently, novel findings reported interesting pathological link between endothelial dysfunction with gut hormones and gut microbiota and energy homeostasis. These findings suggest an active role of gut secretome in regulating the mediators of vascular function, such as nitric oxide (NO) and endothelin-1 (ET-1) that need to be further investigated. Moreover, a central role of brain has been suggested as a main player in the regulation of the different factors and hormones beyond these complex mechanisms. The aim of the present review is to discuss the state of the art in this field, by focusing on the processes leading to endothelial dysfunction mediated by obesity and metabolic diseases, such as insulin resistance. The role of perivascular adipose tissue (PVAT), gut hormones, gut microbiota dysbiosis, and the CNS function in controlling satiety have been considered. Further understanding the crosstalk between these complex mechanisms will allow us to better design novel strategies for the prevention of obesity and its complications.
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15
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Dos Reis Costa DEF, Silveira ALM, Campos GP, Nóbrega NRC, de Araújo NF, de Figueiredo Borges L, Dos Santos Aggum Capettini L, Ferreira AVM, Bonaventura D. High-Carbohydrate Diet Enhanced the Anticontractile Effect of Perivascular Adipose Tissue Through Activation of Renin-Angiotensin System. Front Physiol 2021; 11:628101. [PMID: 33519529 PMCID: PMC7845559 DOI: 10.3389/fphys.2020.628101] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 12/22/2020] [Indexed: 12/12/2022] Open
Abstract
The perivascular adipose tissue (PVAT) is an active endocrine organ responsible for release several substances that influence on vascular tone. Increasing evidence suggest that hyperactivation of the local renin-angiotensin system (RAS) in the PVAT plays a pivotal role in the pathogenesis of cardiometabolic diseases. However, the local RAS contribution to the PVAT control of vascular tone during obesity is still not clear. Since the consumption of a high-carbohydrate diet (HC diet) contributes to obesity inducing a rapid and sustained increase in adiposity, so that the functional activity of PVAT could be modulated, we aimed to evaluate the effect of HC diet on the PVAT control of vascular tone and verify the involvement of RAS in this effect. For that, male Balb/c mice were fed standard or HC diet for 4 weeks. Vascular reactivity, histology, fluorescence, and immunofluorescence analysis were performed in intact thoracic aorta in the presence or absence of PVAT. The results showed that HC diet caused an increase in visceral adiposity and also in the PVAT area. Phenylephrine-induced vasoconstriction was significantly reduced in the HC group only in the presence of PVAT. The anticontractile effect of PVAT induced by HC diet was lost when aortic rings were previously incubated with angiotensin-converting enzyme inhibitor, Mas, and AT2 receptors antagonists, PI3K, nNOS, and iNOS inhibitors, hydrogen peroxide (H2O2) decomposing enzyme or non-selective potassium channels blocker. Immunofluorescence assays showed that both Mas and AT2 receptors as well as nNOS and iNOS isoforms were markedly expressed in the PVAT of the HC group. Furthermore, the PVAT from HC group also exhibited higher nitric oxide (NO) and hydrogen peroxide bioavailability. Taken together, these findings suggest that the anticontractile effect of PVAT induced by HC diet involves the signaling cascade triggered by the renin-angiotensin system through the activation of Mas and AT2 receptors, PI3K, nNOS, and iNOS, leading to increased production of nitric oxide and hydrogen peroxide, and subsequently opening of potassium channels. The contribution of PVAT during HC diet-induced obesity could be a compensatory adaptive characteristic in order to preserve the vascular function.
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Affiliation(s)
| | - Ana Letícia Malheiros Silveira
- Department of Biochemistry and Immunology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Gianne Paul Campos
- Department of Pharmacology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | | | - Natália Ferreira de Araújo
- Department of Pharmacology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Luciano de Figueiredo Borges
- Department of Biological Sciences, Morphophysiology & Pathology Sector, Federal University of São Paulo, São Paulo, Brazil
| | | | - Adaliene Versiani Matos Ferreira
- Department of Biochemistry and Immunology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil.,Department of Nutrition, Nursing School, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Daniella Bonaventura
- Department of Pharmacology, Biological Sciences Institute, Federal University of Minas Gerais, Belo Horizonte, Brazil
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16
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Saxton SN, Whitley AS, Potter RJ, Withers SB, Grencis R, Heagerty AM. Interleukin-33 rescues perivascular adipose tissue anticontractile function in obesity. Am J Physiol Heart Circ Physiol 2020; 319:H1387-H1397. [PMID: 33035443 DOI: 10.1152/ajpheart.00491.2020] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Perivascular adipose tissue (PVAT) depots are metabolically active and play a major vasodilator role in healthy lean individuals. In obesity, they become inflamed and eosinophil-depleted and the anticontractile function is lost with the development of diabetes and hypertension. Moreover, eosinophil-deficient ΔdblGATA-1 mice lack PVAT anticontractile function and exhibit hypertension. Here, we have investigated the effects of inducing eosinophilia on PVAT function in health and obesity. Control, obese, and ΔdblGATA-1 mice were administered intraperitoneal injections of interleukin-33 (IL-33) for 5 days. Conscious restrained blood pressure was measured, and blood was collected for glucose and plasma measurements. Wire myography was used to assess the contractility of mesenteric resistance arteries. IL-33 injections induced a hypereosinophilic phenotype. Obese animals had significant elevations in blood pressure, blood glucose, and plasma insulin, which were normalized with IL-33. Blood glucose and insulin levels were also lowered in lean treated mice. In arteries from control mice, PVAT exerted an anticontractile effect on the vessels, which was enhanced with IL-33 treatment. In obese mice, loss of PVAT anticontractile function was rescued by IL-33. Exogenous application of IL-33 to isolated arteries induced a rapidly decaying endothelium-dependent vasodilation. The therapeutic effects were not seen in IL-33-treated ΔdblGATA-1 mice, thereby confirming that the eosinophil is crucial. In conclusion, IL-33 treatment restored PVAT anticontractile function in obesity and reversed development of hypertension, hyperglycemia, and hyperinsulinemia. These data suggest that targeting eosinophil numbers in PVAT offers a novel approach to the treatment of hypertension and type 2 diabetes in obesity.NEW & NOTEWORTHY In this study, we have shown that administering IL-33 to obese mice will restore PVAT anticontractile function, and this is accompanied by normalized blood pressure, blood glucose, and plasma insulin. Moreover, the PVAT effect is enhanced in control mice given IL-33. IL-33 induced a hypereosinophilic phenotype in our mice, and the effects of IL-33 on PVAT function, blood pressure, and blood glucose are absent in eosinophil-deficient mice, suggesting that the effects of IL-33 are mediated via eosinophils.
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Affiliation(s)
- Sophie N Saxton
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom.,The Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, United Kingdom
| | - Alice S Whitley
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom
| | - Ryan J Potter
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom
| | - Sarah B Withers
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom.,The Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, United Kingdom.,School of Science, Engineering and Environment, University of Salford, Manchester, United Kingdom
| | - Richard Grencis
- The Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, United Kingdom.,Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, United Kingdom
| | - Anthony M Heagerty
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom.,The Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, United Kingdom
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17
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Schinzari F, Cardillo C. Intricacies of the endothelin system in human obesity: role in the development of complications and potential as a therapeutic target. Can J Physiol Pharmacol 2020; 98:563-569. [PMID: 32808824 DOI: 10.1139/cjpp-2019-0651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2023]
Abstract
Activation of the vascular endothelin-1 (ET-1) system is a key abnormality in vascular dysfunction of human obesity, especially in patients developing complications, such as the metabolic syndrome, diabetes, and atherosclerosis. Vascular insulin resistance, an increased insulin-stimulated endothelial production of ET-1 combined with impaired nitric oxide availability, is the hallmark of obesity-related vasculopathy, but dysregulated adipokine release from obese adipose tissue may contribute to the predominance of ET-1-dependent vasoconstriction. ET-1, in turn, might determine unhealthy obese adipose tissue expansion, with visceral and perivascular adipose tissue changes driving the release of inflammatory cytokines and atherogenic chemokines. In addition, ET-1 might also play a role in the development of the metabolic complications of obesity. Studies have shown inhibition of lipoprotein lipase activity by ET-1, with consequent hypertriglyceridemia. Also, ET-1 in pancreatic islets seems to contribute to beta cell dysfunction, hence affecting insulin production and development of diabetes. Moreover, ET-1 may play a role in nonalcoholic steatohepatitis. Recent clinical trials using innovative design have demonstrated that antagonism of ET-type A receptors protects against some complications of obesity and diabetes, such as nephropathy. These findings encourage further investigation to evaluate whether targeting the ET-1 system could afford better protection against other consequences of the obesity epidemic.
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Affiliation(s)
| | - Carmine Cardillo
- Policlinico A. Gemelli IRCCS, Roma, Italy
- Università Cattolica del Sacro Cuore, Largo F. Vito 1, 00168 Roma, Italy
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18
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Targeting perivascular and epicardial adipose tissue inflammation: therapeutic opportunities for cardiovascular disease. Clin Sci (Lond) 2020; 134:827-851. [PMID: 32271386 DOI: 10.1042/cs20190227] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 03/20/2020] [Accepted: 03/30/2020] [Indexed: 02/07/2023]
Abstract
Major shifts in human lifestyle and dietary habits toward sedentary behavior and refined food intake triggered steep increase in the incidence of metabolic disorders including obesity and Type 2 diabetes. Patients with metabolic disease are at a high risk of cardiovascular complications ranging from microvascular dysfunction to cardiometabolic syndromes including heart failure. Despite significant advances in the standards of care for obese and diabetic patients, current therapeutic approaches are not always successful in averting the accompanying cardiovascular deterioration. There is a strong relationship between adipose inflammation seen in metabolic disorders and detrimental changes in cardiovascular structure and function. The particular importance of epicardial and perivascular adipose pools emerged as main modulators of the physiology or pathology of heart and blood vessels. Here, we review the peculiarities of these two fat depots in terms of their origin, function, and pathological changes during metabolic deterioration. We highlight the rationale for pharmacological targeting of the perivascular and epicardial adipose tissue or associated signaling pathways as potential disease modifying approaches in cardiometabolic syndromes.
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19
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Schiffrin EL. How Structure, Mechanics, and Function of the Vasculature Contribute to Blood Pressure Elevation in Hypertension. Can J Cardiol 2020; 36:648-658. [PMID: 32389338 DOI: 10.1016/j.cjca.2020.02.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/02/2020] [Accepted: 02/03/2020] [Indexed: 01/11/2023] Open
Abstract
Large conduit arteries and the microcirculation participate in the mechanisms of elevation of blood pressure (BP). Large vessels play roles predominantly in older subjects, with stiffening progressing after middle age leading to increases in systolic BP found in most humans with aging. Systolic BP elevation and increased pulsatility penetrate deeper into the distal vasculature, leading to microcirculatory injury, remodelling, and associated endothelial dysfunction. The result is target organ damage in the heart, brain, and kidney. In younger individuals genetically predisposed to high BP, increased salt intake or other exogenous or endogenous risk factors for hypertension, including overweight and excess alcohol intake, lead to enhanced sympathetic activity and vasoconstriction. Enhanced vasoconstrictor responses and myogenic tone become persistent when embedded in an increased extracellular matrix, resulting in remodelling of resistance arteries with a narrowed lumen and increased media-lumen ratio. Stimulation of the renin-angiotensin-aldosterone and endothelin systems and inflammatory and immune activation, to which gut microbiome dysbiosis may contribute as a result of salt intake, also participate in the injury and remodelling of the microcirculation and endothelial dysfunction. Inflammation of perivascular fat and loss of anticontractile factors play roles as well in microvessel remodelling. Exaggerated myogenic tone leads to closure of terminal arterioles, collapse of capillaries and venules, functional rarefaction, and eventually to anatomic rarefaction, compromising tissue perfusion. The remodelling of the microcirculation raises resistance to flow, and accordingly raises BP in a feedback process that over years results in stiffening of conduit arteries and systo-diastolic or predominantly systolic hypertension and, more rarely, predominantly diastolic hypertension. Thus, at different stages of life and the evolution of hypertension, large vessels and the microcirculation interact to contribute to BP elevation.
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Affiliation(s)
- Ernesto L Schiffrin
- Lady Davis Institute for Medical Research and Department of Medicine, Sir Mortimer B. Davis-Jewish General Hospital, McGill University, Montréal, Québec, Canada.
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20
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A New Function for Perivascular Adipose Tissue (PVAT): Assistance of Arterial Stress Relaxation. Sci Rep 2020; 10:1807. [PMID: 32019956 PMCID: PMC7000722 DOI: 10.1038/s41598-020-58368-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 01/06/2020] [Indexed: 12/19/2022] Open
Abstract
In health, PVAT secretes anti-contractile factors that relax the underlying artery. PVAT’s contributions to vascular function include more than production of vasoactive substances. We hypothesized that PVAT benefits the artery by assisting the function of stress (–induced) relaxation. Thoracic aorta rings from Sprague Dawley rats were mounted in isolated tissue baths with (+) and without (−) PVAT. A cumulative length tension (0–6 grams) was generated. The tension to which the tissue stress relaxed over 30 minutes was recorded; the tension lost was stress relaxation. The presence of PVAT increased the amount of stress relaxation (final tension in mgs; aortic ring −PVAT = 4578 ± 190; aortic ring + PVAT = 2730 ± 274, p < 0.05). PVAT left attached but not encompassing the aorta provided no benefit in cumulative stress relaxation (aortic ring +/− PVAT = 4122 ± 176; p > 0.05 vs −PVAT). A PVAT ring separated from the aorta demonstrated more profound stress relaxation than did the aortic ring itself. Finally, PVAT-assisted stress relaxation was observed in an artery with white fat (superior mesenteric artery) and in aorta from both male and female of another rat strain, the Dahl S rat. Knowledge of this new PVAT function supports PVAT as an essential player in vascular health.
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21
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Antonopoulos AS, Papanikolaou P, Tousoulis D. The Role of Perivascular Adipose Tissue in Microvascular Function and Coronary Atherosclerosis. Microcirculation 2020. [DOI: 10.1007/978-3-030-28199-1_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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22
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Son M, Oh S, Lee HS, Chung DM, Jang JT, Jeon YJ, Choi CH, Park KY, Son KH, Byun K. Ecklonia Cava Extract Attenuates Endothelial Cell Dysfunction by Modulation of Inflammation and Brown Adipocyte Function in Perivascular Fat Tissue. Nutrients 2019; 11:E2795. [PMID: 31731817 PMCID: PMC6893767 DOI: 10.3390/nu11112795] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/12/2019] [Accepted: 11/13/2019] [Indexed: 12/19/2022] Open
Abstract
It is well known that perivascular fat tissue (PVAT) dysfunction can induce endothelial cell (EC) dysfunction, an event which is related with various cardiovascular diseases. In this study, we evaluated whether Ecklonia cava extract (ECE) and pyrogallol-phloroglucinol-6,6-bieckol (PPB), one component of ECE, could attenuate EC dysfunction by modulating diet-induced PVAT dysfunction mediated by inflammation and ER stress. A high fat diet (HFD) led to an increase in the number and size of white adipocytes in PVAT; PPB and ECE attenuated those increases. Additionally, ECE and PPB attenuated: (i) an increase in the number of M1 macrophages and the expression level of monocyte chemoattractant protein-1 (MCP-1), both of which are related to increases in macrophage infiltration and induction of inflammation in PVAT, and (ii) the expression of pro-inflammatory cytokines (e.g., tumor necrosis factor-α (TNF-α) and interleukin (IL)-6, chemerin) in PVAT which led to vasoconstriction. Furthermore, ECE and PPB: (i) enhanced the expression of adiponectin and IL-10 which had anti-inflammatory and vasodilator effects, (ii) decreased HFD-induced endoplasmic reticulum (ER) stress and (iii) attenuated the ER stress mediated reduction in sirtuin type 1 (Sirt1) and peroxisome proliferator-activated receptor γ (PPARγ) expression. Protective effects against decreased Sirt1 and PPARγ expression led to the restoration of uncoupling protein -1 (UCP-1) expression and the browning process in PVAT. PPB or ECE attenuated endothelial dysfunction by enhancing the pAMPK-PI3K-peNOS pathway and reducing the expression of endothelin-1 (ET-1). In conclusion, PPB and ECE attenuated PVAT dysfunction and subsequent endothelial dysfunction by: (i) decreasing inflammation and ER stress, and (ii) modulating brown adipocyte function.
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Affiliation(s)
- Myeongjoo Son
- Department of Anatomy & Cell Biology, Gachon University College of Medicine, Incheon 21936, Korea;
- Functional Cellular Networks Laboratory, College of Medicine, Department of Medicine, Graduate School and Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Korea; (S.O.); (H.S.L.)
| | - Seyeon Oh
- Functional Cellular Networks Laboratory, College of Medicine, Department of Medicine, Graduate School and Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Korea; (S.O.); (H.S.L.)
| | - Hye Sun Lee
- Functional Cellular Networks Laboratory, College of Medicine, Department of Medicine, Graduate School and Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Korea; (S.O.); (H.S.L.)
| | - Dong-Min Chung
- Shinwoo cooperation. Ltd. 991, Worasan-ro, Munsan-eup, Jinju, Gyeongsangnam-do 52839, Korea;
| | - Ji Tae Jang
- Aqua Green Technology Co., Ltd., Smart Bldg., Jeju Science Park, Cheomdan-ro, Jeju 63309, Korea;
| | - You-Jin Jeon
- Department of Marine Life Science, Jeju National University, Jeju 63243, Korea;
| | - Chang Hu Choi
- Department of Thoracic and Cardiovascular Surgery, Gachon University Gil Medical Center, Gachon University, Incheon 21565, Korea; (C.H.C.); (K.Y.P.)
| | - Kook Yang Park
- Department of Thoracic and Cardiovascular Surgery, Gachon University Gil Medical Center, Gachon University, Incheon 21565, Korea; (C.H.C.); (K.Y.P.)
| | - Kuk Hui Son
- Department of Thoracic and Cardiovascular Surgery, Gachon University Gil Medical Center, Gachon University, Incheon 21565, Korea; (C.H.C.); (K.Y.P.)
| | - Kyunghee Byun
- Department of Anatomy & Cell Biology, Gachon University College of Medicine, Incheon 21936, Korea;
- Functional Cellular Networks Laboratory, College of Medicine, Department of Medicine, Graduate School and Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon 21999, Korea; (S.O.); (H.S.L.)
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23
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Saxton SN, Clark BJ, Withers SB, Eringa EC, Heagerty AM. Mechanistic Links Between Obesity, Diabetes, and Blood Pressure: Role of Perivascular Adipose Tissue. Physiol Rev 2019; 99:1701-1763. [PMID: 31339053 DOI: 10.1152/physrev.00034.2018] [Citation(s) in RCA: 136] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Obesity is increasingly prevalent and is associated with substantial cardiovascular risk. Adipose tissue distribution and morphology play a key role in determining the degree of adverse effects, and a key factor in the disease process appears to be the inflammatory cell population in adipose tissue. Healthy adipose tissue secretes a number of vasoactive adipokines and anti-inflammatory cytokines, and changes to this secretory profile will contribute to pathogenesis in obesity. In this review, we discuss the links between adipokine dysregulation and the development of hypertension and diabetes and explore the potential for manipulating adipose tissue morphology and its immune cell population to improve cardiovascular health in obesity.
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Affiliation(s)
- Sophie N Saxton
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom; School of Environment and Life Sciences, University of Salford, Salford, United Kingdom; and Department of Physiology, VU University Medical Centre, Amsterdam, Netherlands
| | - Ben J Clark
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom; School of Environment and Life Sciences, University of Salford, Salford, United Kingdom; and Department of Physiology, VU University Medical Centre, Amsterdam, Netherlands
| | - Sarah B Withers
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom; School of Environment and Life Sciences, University of Salford, Salford, United Kingdom; and Department of Physiology, VU University Medical Centre, Amsterdam, Netherlands
| | - Etto C Eringa
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom; School of Environment and Life Sciences, University of Salford, Salford, United Kingdom; and Department of Physiology, VU University Medical Centre, Amsterdam, Netherlands
| | - Anthony M Heagerty
- Division of Cardiovascular Sciences, University of Manchester, Manchester, United Kingdom; School of Environment and Life Sciences, University of Salford, Salford, United Kingdom; and Department of Physiology, VU University Medical Centre, Amsterdam, Netherlands
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24
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Franco S, Liu B. Invited commentary. J Vasc Surg 2019; 70:936. [DOI: 10.1016/j.jvs.2018.10.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 10/31/2018] [Indexed: 11/28/2022]
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25
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Abstract
Perivascular adipose tissue (PVAT) is no longer recognised as simply a structural support for the vasculature, and we now know that PVAT releases vasoactive factors which modulate vascular function. Since the discovery of this function in 1991, PVAT research is rapidly growing and the importance of PVAT function in disease is becoming increasingly clear. Obesity is associated with a plethora of vascular conditions; therefore, the study of adipocytes and their effects on the vasculature is vital. PVAT contains an adrenergic system including nerves, adrenoceptors and transporters. In obesity, the autonomic nervous system is dysfunctional; therefore, sympathetic innervation of PVAT may be the key mechanistic link between increased adiposity and vascular disease. In addition, not all obese people develop vascular disease, but a common feature amongst those that do appears to be the inflammatory cell population in PVAT. This review will discuss what is known about sympathetic innervation of PVAT, and the links between nerve activation and inflammation in obesity. In addition, we will examine the therapeutic potential of exercise in sympathetic stimulation of adipose tissue.
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Affiliation(s)
- Sophie N Saxton
- Division of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Core Technology Facility (3rd floor), 46 Grafton Street, M13 9NT, Manchester, UK.
| | - Sarah B Withers
- Division of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Core Technology Facility (3rd floor), 46 Grafton Street, M13 9NT, Manchester, UK
- School of Environment and Life Sciences, University of Salford, Manchester, UK
| | - Anthony M Heagerty
- Division of Cardiovascular Sciences, Manchester Academic Health Science Centre, University of Manchester, Core Technology Facility (3rd floor), 46 Grafton Street, M13 9NT, Manchester, UK
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26
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Abstract
The organs require oxygen and other types of nutrients (amino acids, sugars, and lipids) to function, the heart consuming large amounts of fatty acids for oxidation and adenosine triphosphate (ATP) generation.
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27
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Donovan J, Wong PS, Garle MJ, Alexander SPH, Dunn WR, Ralevic V. Coronary artery hypoxic vasorelaxation is augmented by perivascular adipose tissue through a mechanism involving hydrogen sulphide and cystathionine-β-synthase. Acta Physiol (Oxf) 2018; 224:e13126. [PMID: 29896909 DOI: 10.1111/apha.13126] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 06/08/2018] [Accepted: 06/09/2018] [Indexed: 11/28/2022]
Abstract
AIM Hypoxia causes vasodilatation of coronary arteries which protects the heart from ischaemic damage through mechanisms including the generation of hydrogen sulphide (H2 S), but the influence of the perivascular adipose tissue (PVAT) and myocardium is incompletely understood. This study aimed to determine whether PVAT and the myocardium modulate the coronary artery hypoxic response and whether this involves hydrogen sulphide. METHODS Porcine left circumflex coronary arteries were prepared as cleaned segments and with PVAT intact, myocardium intact or both PVAT and myocardium intact, and contractility investigated using isometric tension recording. Immunoblotting was used to measure levels of H2 S-synthesizing enzymes: cystathionine-β-synthase (CBS), cystathionine γ-lyase (CSE) and 3-mercaptopyruvate sulphurtransferase (MPST). RESULTS All three H2 S-synthesizing enzymes were detected in the artery and myocardium, but only CBS and MPST were detected in PVAT. Hypoxia elicited a biphasic response in cleaned artery segments consisting of transient contraction followed by prolonged relaxation. In arteries with PVAT intact, hypoxic contraction was attenuated and relaxation augmented. In arteries with myocardium intact, hypoxic contraction was attenuated, but relaxation was unaffected. In replacement experiments, replacement of dissected PVAT and myocardium attenuated artery contraction and augmented relaxation to hypoxia, mimicking the effect of in situ PVAT and indicating involvement of a diffusible factor(s). In arteries with intact PVAT, augmentation of hypoxic relaxation was reversed by amino-oxyacetate (CBS inhibitor), but not DL-propargylglycine (CSE inhibitor) or aspartate (inhibits MPST pathway). CONCLUSION PVAT augments hypoxic relaxation of coronary arteries through a mechanism involving H2 S and CBS, pointing to an important role in regulation of coronary blood flow during hypoxia.
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Affiliation(s)
- J. Donovan
- School of Life Sciences; University of Nottingham; Nottingham UK
| | - P. S. Wong
- School of Life Sciences; University of Nottingham; Nottingham UK
| | - M. J. Garle
- School of Life Sciences; University of Nottingham; Nottingham UK
| | | | - W. R. Dunn
- School of Life Sciences; University of Nottingham; Nottingham UK
| | - V. Ralevic
- School of Life Sciences; University of Nottingham; Nottingham UK
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28
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Schinzari F, Tesauro M, Cardillo C. Increased endothelin-1-mediated vasoconstrictor tone in human obesity: effects of gut hormones. Physiol Res 2018; 67:S69-S81. [PMID: 29947529 DOI: 10.33549/physiolres.933821] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The heavy impact of obesity on the development and progression of cardiovascular disease has sparked sustained efforts to uncover the mechanisms linking excess adiposity to vascular dysfunction. Impaired vasodilator reactivity has been recognized as an early hemodynamic abnormality in obese patients, but also increased vasoconstrictor tone importantly contributes to their vascular damage. In particular, upregulation of the endothelin (ET)-1 system, consistently reported in these patients, might accelerate atherosclerosis and its complication, given the pro-inflammatory and mitogenic properties of ET-1. In recent years, a number of gut hormones, in addition to their role as modulators of food intake, energy balance, glucose and lipid metabolism, and insulin secretion and action, have demonstrated favorable vascular actions. They increase the bioavailability of vasodilator mediators like nitric oxide, but they have also been shown to inhibit the ET-1 system. These features make gut hormones promising tools for targeting both the metabolic and cardiovascular complications of obesity, a view supported by recent large-scale clinical trials indicating that novel drugs for type 2 diabetes with cardiovascular potential may translate into clinically significant advantages. Therefore, there is real hope that better understanding of the properties of gut-derived substances might provide more effective therapies for the obesity-related cardiometabolic syndrome.
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Affiliation(s)
- F Schinzari
- Policlinico A. Gemelli, Rome, Italy, Istituto di Patologia Speciale Medica e Semeiotica Medica, Universita Cattolica del Sacro Cuore, Rome, Italy.
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29
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Assersen KB, Jensen PS, Briones AM, Rasmussen LM, Marcussen N, Toft A, Vanhoutte PM, Jensen BL, Hansen PBL. Periarterial fat from two human vascular beds is not a source of aldosterone to promote vasoconstriction. Am J Physiol Renal Physiol 2018; 315:F1670-F1682. [PMID: 30280597 DOI: 10.1152/ajprenal.00391.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Mouse adipocytes have been reported to release aldosterone and reduce endothelium-dependent relaxation. It is unknown whether perivascular adipose tissue (PVAT) releases aldosterone in humans. The present experiments were designed to test the hypothesis that human PVAT releases aldosterone and induces endothelial dysfunction. Vascular reactivity was assessed in human internal mammary and renal segmental arteries obtained at surgery. The arteries were prepared with/without PVAT, and changes in isometric tension were measured in response to the vasoconstrictor thromboxane prostanoid receptor agonist U46619 and the endothelium-dependent vasodilator acetylcholine. The effects of exogenous aldosterone and of mineralocorticoid receptor (MR) antagonist eplerenone were determined. Aldosterone concentrations were measured by ELISA in conditioned media incubated with human adipose tissue with/without angiotensin II stimulation. Presence of aldosterone synthase and MR mRNA was examined in perirenal, abdominal, and mammary PVAT by PCR. U46619 -induced tension and acetylcholine-induced relaxation were unaffected by exogenous and endogenous aldosterone (addition of aldosterone and MR blocker) in mammary and renal segmental arteries, both in the presence and absence of PVAT. Aldosterone release from incubated perivascular fat was not detectable. Aldosterone synthase expression was not consistently observed in human adipose tissues in contrast to that of MR. Thus, exogenous aldosterone does not affect vascular reactivity and endothelial function in ex vivo human arterial segments, and the tested human adipose tissues have no capacity to synthesize/release aldosterone. In perspective, physiologically relevant effects of aldosterone on vascular function in humans are caused by systemic aldosterone originating from the adrenal gland.
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Affiliation(s)
- Kasper B Assersen
- Cardiovascular and Renal Research, University of Southern Denmark , Odense , Denmark
| | - Pia S Jensen
- Department for Clinical Biochemistry and Pharmacology, Center for Individualized Medicine in Arterial Disease, Odense University Hospital , Odense , Denmark
| | - Ana M Briones
- Departamento de Farmacología, Universidad Autónoma de Madrid, Instituto de Investigación Hospital La Paz, Centro de Investigación en Red en Enfermedades Cardiovasculares , Madrid , Spain
| | - Lars M Rasmussen
- Department for Clinical Biochemistry and Pharmacology, Center for Individualized Medicine in Arterial Disease, Odense University Hospital , Odense , Denmark
| | - Niels Marcussen
- Department of Pathology, Odense University Hospital , Odense , Denmark
| | - Anja Toft
- Department of Urology, Odense University Hospital , Odense , Denmark
| | - Paul M Vanhoutte
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Pharmacology and Pharmacy, University of Hong Kong, Hong Kong, China
| | - Boye L Jensen
- Cardiovascular and Renal Research, University of Southern Denmark , Odense , Denmark
| | - Pernille B L Hansen
- Cardiovascular and Renal Research, University of Southern Denmark , Odense , Denmark.,Cardiovascular, Renal and Metabolic, Innovative Medicines and Early Development Biotech Unit, AstraZeneca, Gothenburg , Sweden
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30
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Martinez-Quinones P, McCarthy CG, Watts SW, Klee NS, Komic A, Calmasini FB, Priviero F, Warner A, Chenghao Y, Wenceslau CF. Hypertension Induced Morphological and Physiological Changes in Cells of the Arterial Wall. Am J Hypertens 2018; 31:1067-1078. [PMID: 29788246 DOI: 10.1093/ajh/hpy083] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 05/14/2018] [Indexed: 12/17/2022] Open
Abstract
Morphological and physiological changes in the vasculature have been described in the evolution and maintenance of hypertension. Hypertension-induced vascular dysfunction may present itself as a contributing, or consequential factor, to vascular remodeling caused by chronically elevated systemic arterial blood pressure. Changes in all vessel layers, from the endothelium to the perivascular adipose tissue (PVAT), have been described. This mini-review focuses on the current knowledge of the structure and function of the vessel layers, specifically muscular arteries: intima, media, adventitia, PVAT, and the cell types harbored within each vessel layer. The contributions of each cell type to vessel homeostasis and pathophysiological development of hypertension will be highlighted.
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Affiliation(s)
- Patricia Martinez-Quinones
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, Georgia
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Cameron G McCarthy
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Stephanie W Watts
- Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, USA
| | - Nicole S Klee
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Amel Komic
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, Georgia
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Fabiano B Calmasini
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Fernanda Priviero
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Alexander Warner
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Yu Chenghao
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
| | - Camilla F Wenceslau
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia
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31
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Abu Bakar H, Robert Dunn W, Daly C, Ralevic V. Sensory innervation of perivascular adipose tissue: a crucial role in artery vasodilatation and leptin release. Cardiovasc Res 2018; 113:962-972. [PMID: 28371926 DOI: 10.1093/cvr/cvx062] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 03/22/2017] [Indexed: 12/23/2022] Open
Abstract
Aims Electrical field stimulation (EFS) elicits robust sensory neurogenic relaxation responses in the rat isolated mesenteric arterial bed but these responses are absent or difficult to demonstrate in isolated arteries. We believe that this mismatch is due to the absence of perivascular adipose tissue (PVAT) as it is conventionally removed in studies on isolated vessels. We aimed to determine whether sensory nerves are expressed in PVAT, their physiological roles and their possible interactions with PVAT-derived adipokines. Methods and results Using confocal imaging, enzyme immunoassay (EIA), myography, vascular perfusion, and multiplex analysis of rat mesenteric arteries, we show that PVAT is crucial for the roles of sensory nerves in control of vasomotor tone and adipokine release. Immunofluorescence double staining showed co-expression of calcitonin gene-related peptide (CGRP; sensory neurotransmitter) and PGP9.5 (neuronal marker) in PVAT of mesenteric arteries. CGRP release from dissected PVAT, measured using EIA, was increased by capsaicin which activates sensory nerves. EFS in both mesenteric arteries and perfused mesenteric arterial beds, with and without PVAT, demonstrated neurogenic relaxation in the presence of PVAT, which was greatly attenuated in preparations without PVAT. Neurogenic relaxation due to EFS was associated with release of leptin in PVAT-intact mesenteric arterial beds, which was abolished in preparations without PVAT. Exposure to low oxygen was associated with an attenuated leptin and adiponectin release, but an increase in IL-6 release, from mesenteric arterial beds. Exogenous leptin augmented relaxation to CGRP in mesenteric arteries. Conclusion These data show, for the first time, expression of sensory nerves within PVAT and that PVAT is crucial for sensory neurogenic vasorelaxation and crosstalk with adipocytes leading to leptin release, which may augment CGRP-mediated relaxation; leptin release is abolished after exposure to conditions of reduced oxygenation.
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Affiliation(s)
| | | | - Craig Daly
- School of Life Sciences, University of Glasgow, G12 8QQ, UK
| | - Vera Ralevic
- School of Life Sciences, University of Nottingham, NG7 2UH, UK
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Akoumianakis I, Antoniades C. The interplay between adipose tissue and the cardiovascular system: is fat always bad? Cardiovasc Res 2018; 113:999-1008. [PMID: 28582523 DOI: 10.1093/cvr/cvx111] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 05/31/2017] [Indexed: 12/14/2022] Open
Abstract
Obesity is a risk factor for cardiovascular disease (CVD). However, clinical research has revealed a paradoxically protective role for obesity in patients with chronic diseases including CVD, suggesting that the biological 'quality' of adipose tissue (AT) may be more important than overall AT mass or body weight. Importantly, AT is recognised as a dynamic organ secreting a wide range of biologically active adipokines, microRNAs, gaseous messengers, and other metabolites that affect the cardiovascular system in both endocrine and paracrine ways. Despite being able to mediate normal cardiovascular function under physiological conditions, AT undergoes a phenotypic shift characterised by acquisition of pro-oxidant and pro-inflammatory properties in cases of CVD. Crucially, recent evidence suggests that AT depots such as perivascular AT and epicardial AT are able to modify their phenotype in response to local signals of vascular and myocardial origin, respectively. Utilisation of this unique property of certain AT depots to dynamically track cardiovascular biology may reveal novel diagnostic and prognostic tools against CVD. Better understanding of the mechanisms controlling the 'quality' of AT secretome, as well as the communication links between AT and the cardiovascular system, is required for the efficient management of CVD.
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Affiliation(s)
- Ioannis Akoumianakis
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Charalambos Antoniades
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
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33
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Costa RM, Neves KB, Tostes RC, Lobato NS. Perivascular Adipose Tissue as a Relevant Fat Depot for Cardiovascular Risk in Obesity. Front Physiol 2018; 9:253. [PMID: 29618983 PMCID: PMC5871983 DOI: 10.3389/fphys.2018.00253] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 03/06/2018] [Indexed: 12/18/2022] Open
Abstract
Obesity is associated with increased risk of premature death, morbidity, and mortality from several cardiovascular diseases (CVDs), including stroke, coronary heart disease (CHD), myocardial infarction, and congestive heart failure. However, this is not a straightforward relationship. Although several studies have substantiated that obesity confers an independent and additive risk of all-cause and cardiovascular death, there is significant variability in these associations, with some lean individuals developing diseases and others remaining healthy despite severe obesity, the so-called metabolically healthy obese. Part of this variability has been attributed to the heterogeneity in both the distribution of body fat and the intrinsic properties of adipose tissue depots, including developmental origin, adipogenic and proliferative capacity, glucose and lipid metabolism, hormonal control, thermogenic ability, and vascularization. In obesity, these depot-specific differences translate into specific fat distribution patterns, which are closely associated with differential cardiometabolic risks. The adventitial fat layer, also known as perivascular adipose tissue (PVAT), is of major importance. Similar to the visceral adipose tissue, PVAT has a pathophysiological role in CVDs. PVAT influences vascular homeostasis by releasing numerous vasoactive factors, cytokines, and adipokines, which can readily target the underlying smooth muscle cell layers, regulating the vascular tone, distribution of blood flow, as well as angiogenesis, inflammatory processes, and redox status. In this review, we summarize the current knowledge and discuss the role of PVAT within the scope of adipose tissue as a major contributing factor to obesity-associated cardiovascular risk. Relevant clinical studies documenting the relationship between PVAT dysfunction and CVD with a focus on potential mechanisms by which PVAT contributes to obesity-related CVDs are pointed out.
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Affiliation(s)
- Rafael M Costa
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Karla B Neves
- Institute of Cardiovascular and Medical Sciences, British Heart Foundation, Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, United Kingdom
| | - Rita C Tostes
- Department of Pharmacology, Ribeirao Preto Medical School, University of São Paulo, Ribeirao Preto, Brazil
| | - Núbia S Lobato
- Institute of Health Sciences, Federal University of Goias, Jatai, Brazil
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Almabrouk TAM, White AD, Ugusman AB, Skiba DS, Katwan OJ, Alganga H, Guzik TJ, Touyz RM, Salt IP, Kennedy S. High Fat Diet Attenuates the Anticontractile Activity of Aortic PVAT via a Mechanism Involving AMPK and Reduced Adiponectin Secretion. Front Physiol 2018; 9:51. [PMID: 29479319 PMCID: PMC5812172 DOI: 10.3389/fphys.2018.00051] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 01/16/2018] [Indexed: 01/31/2023] Open
Abstract
Background and aim: Perivascular adipose tissue (PVAT) positively regulates vascular function through production of factors such as adiponectin but this effect is attenuated in obesity. The enzyme AMP-activated protein kinase (AMPK) is present in PVAT and is implicated in mediating the vascular effects of adiponectin. In this study, we investigated the effect of an obesogenic high fat diet (HFD) on aortic PVAT and whether any changes involved AMPK. Methods: Wild type Sv129 (WT) and AMPKα1 knockout (KO) mice aged 8 weeks were fed normal diet (ND) or HFD (42% kcal fat) for 12 weeks. Adiponectin production by PVAT was assessed by ELISA and AMPK expression studied using immunoblotting. Macrophages in PVAT were identified using immunohistochemistry and markers of M1 and M2 macrophage subtypes evaluated using real time-qPCR. Vascular responses were measured in endothelium-denuded aortic rings with or without attached PVAT. Carotid wire injury was performed and PVAT inflammation studied 7 days later. Key results: Aortic PVAT from KO and WT mice was morphologically indistinct but KO PVAT had more infiltrating macrophages. HFD caused an increased infiltration of macrophages in WT mice with increased expression of the M1 macrophage markers Nos2 and Il1b and the M2 marker Chil3. In WT mice, HFD reduced the anticontractile effect of PVAT as well as reducing adiponectin secretion and AMPK phosphorylation. PVAT from KO mice on ND had significantly reduced adiponectin secretion and no anticontractile effect and feeding HFD did not alter this. Wire injury induced macrophage infiltration of PVAT but did not cause further infiltration in KO mice. Conclusions: High-fat diet causes an inflammatory infiltrate, reduced AMPK phosphorylation and attenuates the anticontractile effect of murine aortic PVAT. Mice lacking AMPKα1 phenocopy many of the changes in wild-type aortic PVAT after HFD, suggesting that AMPK may protect the vessel against deleterious changes in response to HFD.
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Affiliation(s)
- Tarek A M Almabrouk
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Medical School, University of Zawia, Zawia, Libya
| | - Anna D White
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Azizah B Ugusman
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Department of Physiology, National University of Malaysia Medical Centre, Kuala Lumpur, Malaysia
| | - Dominik S Skiba
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Jagiellonian University College of Medicine, Krakow, Poland
| | - Omar J Katwan
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Department of Biochemistry, College of Medicine, University of Diyala, Baqubah, Iraq
| | - Husam Alganga
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Medical School, University of Zawia, Zawia, Libya
| | - Tomasz J Guzik
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom.,Jagiellonian University College of Medicine, Krakow, Poland
| | - Rhian M Touyz
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Ian P Salt
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Simon Kennedy
- Institute of Cardiovascular and Medical Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
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35
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Li C, Li S, Zhang F, Wu M, Liang H, Song J, Lee C, Chen H. Endothelial microparticles-mediated transfer of microRNA-19b promotes atherosclerosis via activating perivascular adipose tissue inflammation in apoE−/− mice. Biochem Biophys Res Commun 2018; 495:1922-1929. [DOI: 10.1016/j.bbrc.2017.11.195] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 11/29/2017] [Indexed: 11/25/2022]
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36
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Araujo HN, Victório JA, Valgas da Silva CP, Sponton ACS, Vettorazzi JF, de Moraes C, Davel AP, Zanesco A, Delbin MA. Anti-contractile effects of perivascular adipose tissue in thoracic aorta from rats fed a high-fat diet: role of aerobic exercise training. Clin Exp Pharmacol Physiol 2017; 45:293-302. [DOI: 10.1111/1440-1681.12882] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 10/11/2017] [Accepted: 10/13/2017] [Indexed: 01/19/2023]
Affiliation(s)
- Hygor N. Araujo
- Department of Structural and Functional Biology; Institute of Biology; University of Campinas (UNICAMP); Campinas SP Brazil
| | - Jamaira A. Victório
- Department of Structural and Functional Biology; Institute of Biology; University of Campinas (UNICAMP); Campinas SP Brazil
| | - Carmem P. Valgas da Silva
- Department of Physical Education; Institute of Biosciences; São Paulo State University (UNESP); Rio Claro SP Brazil
| | - Amanda C. S. Sponton
- Department of Structural and Functional Biology; Institute of Biology; University of Campinas (UNICAMP); Campinas SP Brazil
| | - Jean F. Vettorazzi
- Obesity and Comorbidities Research Center; Department of Structural and Functional Biology; Institute of Biology; University of Campinas (UNICAMP); Campinas SP Brazil
| | - Camila de Moraes
- School of Physical Education and Sport of Ribeirão Preto; University of São Paulo (USP); RibeirãoPreto SP Brazil
| | - Ana P. Davel
- Department of Structural and Functional Biology; Institute of Biology; University of Campinas (UNICAMP); Campinas SP Brazil
| | | | - Maria A. Delbin
- Department of Structural and Functional Biology; Institute of Biology; University of Campinas (UNICAMP); Campinas SP Brazil
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37
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Guragai N, Rampal U, Vasudev R, Patel H, Joshi MB, Shamoon F. A rare case of late onset saphenous vein graft spasm. J Community Hosp Intern Med Perspect 2017; 7:332-335. [PMID: 29147480 PMCID: PMC5676795 DOI: 10.1080/20009666.2017.1379851] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 09/07/2017] [Indexed: 12/04/2022] Open
Abstract
Spasm following coronary artery bypass graft surgery has been well established in arterial grafts, especially in grafts utilizing the internal mammary. Venous graft spasms are uncommon and are only observed in vein grafts during or soon after the coronary artery bypass surgery. It is exceedingly rare to see spasm of venous graft beyond one year of surgery. We report a 72-year-old female who had coronary artery bypass graft three years ago and presented with new onset chest pain for one month. The coronary angiogram revealed severe spasm of the proximal aspect of a patent saphenous venous graft which was relieved by intracoronary nitroglycerine. Patient was successfully managed using combination of anti-spasmodic medications (nitrates and calcium channel blockers) leading to long-term resolution of her anginal symptoms.
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Affiliation(s)
- Nirmal Guragai
- Department of Internal Medicine, Trinitas Regional Medical Center, Seton Hall University, Elizabeth, NJ, USA
| | - Upamanyu Rampal
- Department of Cardiology, New York Medical College at St Joseph's Regional Medical Center, Paterson, NJ, USA
| | - Rahul Vasudev
- Department of Internal Medicine, New York Medical College at St Joseph's Regional Medical Center, Paterson, NJ, USA
| | - Hiten Patel
- Department of Cardiology, New York Medical College at St Joseph's Regional Medical Center, Paterson, NJ, USA
| | - Meherwan B Joshi
- Department of Internal Medicine, Trinitas Regional Medical Center, Seton Hall University, Elizabeth, NJ, USA
| | - Fayez Shamoon
- Department of Cardiology, New York Medical College at St Joseph's Regional Medical Center, Paterson, NJ, USA
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38
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Akoumianakis I, Akawi N, Antoniades C. Exploring the Crosstalk between Adipose Tissue and the Cardiovascular System. Korean Circ J 2017; 47:670-685. [PMID: 28955384 PMCID: PMC5614942 DOI: 10.4070/kcj.2017.0041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 04/04/2017] [Indexed: 12/28/2022] Open
Abstract
Obesity is a clinical entity critically involved in the development and progression of cardiovascular disease (CVD), which is characterised by variable expansion of adipose tissue (AT) mass across the body as well as by phenotypic alterations in AT. AT is able to secrete a diverse spectrum of biologically active substances called adipocytokines, which reach the cardiovascular system via both endocrine and paracrine routes, potentially regulating a variety of physiological and pathophysiological responses in the vasculature and heart. Such responses include regulation of inflammation and oxidative stress as well as cell proliferation, migration and hypertrophy. Furthermore, clinical observations such as the “obesity paradox,” namely the fact that moderately obese patients with CVD have favourable clinical outcome, strongly indicate that the biological “quality” of AT may be far more crucial than its overall mass in the regulation of CVD pathogenesis. In this work, we describe the anatomical and biological diversity of AT in health and metabolic disease; we next explore its association with CVD and, importantly, novel evidence for its dynamic crosstalk with the cardiovascular system, which could regulate CVD pathogenesis.
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Affiliation(s)
- Ioannis Akoumianakis
- Division of Cardiovascular Medicine, University of Oxford, Oxford, United Kingdom
| | - Nadia Akawi
- Division of Cardiovascular Medicine, University of Oxford, Oxford, United Kingdom
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39
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Endothelial and Perivascular Adipose Tissue Abnormalities in Obesity-Related Vascular Dysfunction: Novel Targets for Treatment. J Cardiovasc Pharmacol 2017; 69:360-368. [DOI: 10.1097/fjc.0000000000000469] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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40
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Schütten MTJ, Houben AJHM, de Leeuw PW, Stehouwer CDA. The Link Between Adipose Tissue Renin-Angiotensin-Aldosterone System Signaling and Obesity-Associated Hypertension. Physiology (Bethesda) 2017; 32:197-209. [PMID: 28404736 DOI: 10.1152/physiol.00037.2016] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 02/20/2017] [Accepted: 02/21/2017] [Indexed: 11/22/2022] Open
Abstract
Obese individuals frequently develop hypertension, which is for an important part attributable to renin-angiotensin-aldosterone system (RAAS) overactivity. This review summarizes preclinical and clinical evidence on the involvement of dysfunctional adipose tissue in RAAS activation and on the renal, central, and vascular mechanisms linking RAAS components to obesity-associated hypertension.
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Affiliation(s)
- Monica T J Schütten
- Department of Internal Medicine and Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Alfons J H M Houben
- Department of Internal Medicine and Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Peter W de Leeuw
- Department of Internal Medicine and Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Coen D A Stehouwer
- Department of Internal Medicine and Cardiovascular Research Institute Maastricht, Maastricht University Medical Centre, Maastricht, The Netherlands
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41
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Zaborska KE, Edwards G, Austin C, Wareing M. The Role of O-GlcNAcylation in Perivascular Adipose Tissue Dysfunction of Offspring of High-Fat Diet-Fed Rats. J Vasc Res 2017; 54:79-91. [PMID: 28376507 PMCID: PMC5569708 DOI: 10.1159/000458422] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 01/27/2017] [Indexed: 12/31/2022] Open
Abstract
Perivascular adipose tissue (PVAT), which reduces vascular contractility, is dysfunctional in the male offspring of rats fed a high-fat diet (HFD), partially due to a reduced NO bioavailability. O-GlcNAcylation of eNOS decreases its activity, thus we investigated the role of O-GlcNAcylation in the prenatal programming of PVAT dysfunction. Female Sprague-Dawley rats were fed either a control (10% fat) or an obesogenic HFD (45% fat) diet for 12 weeks prior to mating, and throughout pregnancy and lactation. Offspring were weaned onto the control diet and were killed at 12 and 24 weeks of age. Mesenteric arteries from the 12-week-old offspring of HFD dams (HFDO) contracted less to U46619; these effects were mimicked by glucosamine in control arteries. PVAT from 12- and 24-week-old controls, but not from HFDO, exerted an anticontractile effect. Glucosamine attenuated the anticontractile effect of PVAT in the vessels from controls but not from HFDO. AMP-activated protein kinase (AMPK) activation (with A769662) partially restored an anticontractile effect in glucosamine-treated controls and HFDO PVAT. Glucosamine decreased AMPK activity and expression in HFDO PVAT, although phosphorylated eNOS expression was only reduced in that from males. The loss of anticontractile effect of HFDO PVAT is likely to result from increased O-GlcNAcylation, which decreased AMPK activity and, in males, decreased NO bioavailability.
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Affiliation(s)
- Karolina E Zaborska
- Institute of Cardiovascular Sciences, University of Manchester, Manchester, UK
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42
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Fernández-Alfonso MS, Gil-Ortega M, Aranguez I, Souza D, Dreifaldt M, Somoza B, Dashwood MR. Role of PVAT in coronary atherosclerosis and vein graft patency: friend or foe? Br J Pharmacol 2017; 174:3561-3572. [PMID: 28150299 DOI: 10.1111/bph.13734] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/02/2017] [Accepted: 01/19/2017] [Indexed: 01/18/2023] Open
Abstract
Perivascular adipose tissue (PVAT) releases numerous factors and adipokines with paracrine effects on both vascular structure and function. These effects are variable as they depend on regional differences in PVAT among blood vessels and vary with changes in adiposity. There is considerable evidence demonstrating an association between coronary PVAT and the development and progression of coronary artery disease, which is associated with inflammation, oxidative stress, angiogenesis, vascular remodelling and blood clotting. However, PVAT also has a protective role in vascular grafts, especially the no-touch saphenous vein, in patients undergoing coronary artery bypass. This beneficial influence of PVAT involves factors such as adipocyte-derived relaxing factor, nitric oxide (NO), leptin, adiponectin, prostanoids, hydrogen sulphide and neurotransmitters, as well as mechanical protection. This article aims to highlight and compare the dual role of PVAT in the development and progression of coronary atherosclerosis, as well as in increased graft patency. Different deleterious and protective mechanisms of PVAT are also discussed and the inside-outside signalling paradigm of atherosclerosis development re-evaluated. The bidirectional communication between the arterial and venous wall and their surrounding PVAT, where signals originating from the vascular wall or lumen can affect PVAT phenotype, has been shown to be very complex. Moreover, signals from PVAT also influence the structure and function of the vascular wall in a paracrine manner. LINKED ARTICLES This article is part of a themed section on Molecular Mechanisms Regulating Perivascular Adipose Tissue - Potential Pharmacological Targets? To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.20/issuetoc.
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Affiliation(s)
- M S Fernández-Alfonso
- Instituto Pluridisciplinar and Facultad de Farmacia, Universidad Complutense, Madrid, Spain
| | - M Gil-Ortega
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU-San Pablo, Madrid, Spain
| | - I Aranguez
- Instituto Pluridisciplinar and Facultad de Farmacia, Universidad Complutense, Madrid, Spain
| | - D Souza
- Department of Cardiothoracic and Vascular Surgery and University Health Care Research Center, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - M Dreifaldt
- Department of Cardiothoracic and Vascular Surgery and University Health Care Research Center, School of Medical Sciences, Örebro University, Örebro, Sweden
| | - B Somoza
- Departamento de Ciencias Farmacéuticas y de la Salud, Facultad de Farmacia, Universidad CEU-San Pablo, Madrid, Spain
| | - M R Dashwood
- Royal Free Hospital Campus, University College Medical School, London, UK
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43
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Schinzari F, Tesauro M, Cardillo C. Vascular hyperpolarization in human physiology and cardiovascular risk conditions and disease. Acta Physiol (Oxf) 2017; 219:124-137. [PMID: 28009486 DOI: 10.1111/apha.12630] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 10/05/2015] [Accepted: 11/05/2015] [Indexed: 12/11/2022]
Abstract
Hyperpolarization causing smooth muscle relaxation contributes to the maintenance of vascular homeostasis, particularly in small-calibre arteries and arterioles. It may also become a compensatory vasodilator mechanism upregulated in states with impaired nitric oxide (NO) availability. Bioassay of vascular hyperpolarization in the human circulation has been hampered by the complexity of mechanisms involved and the limited availability of investigational tools. Firm evidence, however, supports the notion that hyperpolarization participates in the regulation of resting vasodilator tone and vascular reactivity in healthy subjects. In addition, an enhanced endothelium-derived hyperpolarization contributes to both resting and agonist-stimulated vasodilation in a variety of cardiovascular risk conditions and disease. Thus, hyperpolarization mediated by epoxyeicosatrienoic acids (EETs) and H2 O2 has been observed in coronary arterioles of patients with coronary artery disease. Similarly, ouabain-sensitive and EETs-mediated hyperpolarization has been observed to compensate for NO deficiency in patients with essential hypertension. Moreover, in non-hypertensive patients with multiple cardiovascular risk factors and in hypercholesterolaemia, KCa channel-mediated vasodilation appears to be activated. A novel paradigm establishes that perivascular adipose tissue (PVAT) is an additional regulator of vascular tone/function and endothelium is not the only agent in vascular hyperpolarization. Indeed, some PVAT-derived relaxing substances, such as adiponectin and angiotensin 1-7, may exert anticontractile and vasodilator actions by the opening of KCa channels in smooth muscle cells. Conversely, PVAT-derived factors impair coronary vasodilation via differential inhibition of some K+ channels. In view of adipose tissue abnormalities occurring in human obesity, changes in PVAT-dependent hyperpolarization may be relevant for vascular dysfunction also in this condition.
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Affiliation(s)
- F. Schinzari
- Department of Internal Medicine; Catholic University; Rome Italy
| | - M. Tesauro
- Department of Internal Medicine; Tor Vergata University; Rome Italy
| | - C. Cardillo
- Department of Internal Medicine; Catholic University; Rome Italy
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44
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Akoumianakis I, Tarun A, Antoniades C. Perivascular adipose tissue as a regulator of vascular disease pathogenesis: identifying novel therapeutic targets. Br J Pharmacol 2016; 174:3411-3424. [PMID: 27976387 DOI: 10.1111/bph.13666] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 10/04/2016] [Accepted: 10/28/2016] [Indexed: 12/23/2022] Open
Abstract
Adipose tissue (AT) is an active endocrine organ with the ability to dynamically secrete a wide range of adipocytokines. Importantly, its secretory profile is altered in various cardiovascular disease states. AT surrounding vessels, or perivascular AT (PVAT), is recognized in particular as an important local regulator of vascular function and dysfunction. Specifically, PVAT has the ability to sense vascular paracrine signals and respond by secreting a variety of vasoactive adipocytokines. Due to the crucial role of PVAT in regulating many aspects of vascular biology, it may constitute a novel therapeutic target for the prevention and treatment of vascular disease pathogenesis. Signalling pathways in PVAT, such as those using adiponectin, H2 S, glucagon-like peptide 1 or pro-inflammatory cytokines, are among the potential novel pharmacological therapeutic targets of PVAT. LINKED ARTICLES This article is part of a themed section on Molecular Mechanisms Regulating Perivascular Adipose Tissue - Potential Pharmacological Targets? To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v174.20/issuetoc.
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Affiliation(s)
- Ioannis Akoumianakis
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford
| | - Akansha Tarun
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford
| | - Charalambos Antoniades
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford
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Vascular structural and functional changes: their association with causality in hypertension: models, remodeling and relevance. Hypertens Res 2016; 40:311-323. [PMID: 27784889 DOI: 10.1038/hr.2016.145] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 09/09/2016] [Accepted: 09/26/2016] [Indexed: 12/22/2022]
Abstract
Essential hypertension is a complex multifactorial disease process that involves the interaction of multiple genes at various loci throughout the genome, and the influence of environmental factors such as diet and lifestyle, to ultimately determine long-term arterial pressure. These factors converge with physiological signaling pathways to regulate the set-point of long-term blood pressure. In hypertension, structural changes in arteries occur and show differences within and between vascular beds, between species, models and sexes. Such changes can also reflect the development of hypertension, and the levels of circulating humoral and vasoactive compounds. The role of perivascular adipose tissue in the modulation of vascular structure under various disease states such as hypertension, obesity and metabolic syndrome is an emerging area of research, and is likely to contribute to the heterogeneity described in this review. Diversity in structure and related function is the norm, with morphological changes being causative in some beds and states, and in others, a consequence of hypertension. Specific animal models of hypertension have advantages and limitations, each with factors influencing the relevance of the model to the human hypertensive state/s. However, understanding the fundamental properties of artery function and how these relate to signalling mechanisms in real (intact) tissues is key for translating isolated cell and model data to have an impact and relevance in human disease etiology. Indeed, the ultimate aim of developing new treatments to correct vascular dysfunction requires understanding and recognition of the limitations of the methodologies used.
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Costa RM, Filgueira FP, Tostes RC, Carvalho MHC, Akamine EH, Lobato NS. H2O2 generated from mitochondrial electron transport chain in thoracic perivascular adipose tissue is crucial for modulation of vascular smooth muscle contraction. Vascul Pharmacol 2016; 84:28-37. [DOI: 10.1016/j.vph.2016.05.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 05/23/2016] [Accepted: 05/26/2016] [Indexed: 01/29/2023]
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Uchida Y, Uchida Y, Shimoyama E, Hiruta N, Kishimoto T, Watanabe S. Human pericoronary adipose tissue as storage and possible supply site for oxidized low-density lipoprotein and high-density lipoprotein in coronary artery. J Cardiol 2016; 69:236-244. [PMID: 27209423 DOI: 10.1016/j.jjcc.2016.03.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 03/22/2016] [Accepted: 03/25/2016] [Indexed: 12/01/2022]
Abstract
BACKGROUND Thickening of the pericoronary adipose tissue (PCAT) is a proven risk factor for coronary artery disease, but it is poorly understood whether PCAT stores pro-atherogenic substances with oxidized low-density lipoprotein (oxLDL) and low-density lipoprotein (LDL), and an anti-atherogenic substance with high-density lipoprotein (HDL) and supply them to the coronary intima. METHODS Using immunohistochemical techniques, the localization of oxLDL, LDL and HDL in PCAT and its adjacent coronary segments was examined in 30 epicardial coronary arteries excised from 11 human autopsy cases. RESULTS PCAT stored oxLDL and HDL in all, but LDL rarely, in 77 specimens examined, irrespective of the presence or absence of coronary plaques and underlying disease. The percentage (%) incidence of oxLDL, HDL and LDL deposits in intima was, respectively, 28, 10, 35 in 29 normal segments, 80 (p<0.05 vs. normal segments), 12, 75 in 19 white plaques (growth stage), 57, 36, 90 in 15 yellow plaques without necrotic core (NC; mature stage), and 40, 21, 100 (p<0.05 vs. normal segments) in 14 yellow plaques with NC (end-stage of maturation) as classified by angioscopy and histology. In coronary intima, oxLDL deposited in either a dotted or diffuse pattern whereas HDL and LDL showed diffuse patterns. Dotted oxLDL deposits were contained in CD68(+)-macrophages traversing the border of PCAT and adventitia, external and internal elastic laminae. Diffuse oxLDL and HDL deposits colocalized with intimal vasa vasorum. CONCLUSIONS The results suggested that, as a hitherto unrecognized supplying route, the human PCAT stores oxLDL and HDL and oxLDL is supplied to coronary intima either by CD68(+)-macrophages or vasa vasorum and HDL by vasa vasorum, and that deposition of oxLDL and HDL in the intima increased with plaque growth but the former decreased while the latter increased further with plaque maturation. Molecular therapy targeting PCAT before plaque maturation could be effective in preventing atherosclerosis.
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Affiliation(s)
- Yasumi Uchida
- Japanese Foundation for Cardiovascular Research, Funabashi, Japan; Department of Cardiology, Tokyo Jikei University School of Medicine, Tokyo, Japan.
| | - Yasuto Uchida
- Department of Cardiology, Tsukuba Memorial Hospital, Tsukuba, Japan
| | - Ei Shimoyama
- Department of Pathology, Funabashi-Futawa Hospital, Funabashi, Japan
| | - Nobuyuki Hiruta
- Department of Pathology, Toho University Sakura Medical Center, Sakura, Japan
| | | | - Soichiro Watanabe
- Department of Biomolecular Science, Toho University, Funabashi, Japan
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Loss of anti-contractile effect of perivascular adipose tissue in offspring of obese rats. Int J Obes (Lond) 2016; 40:1205-14. [PMID: 27102050 PMCID: PMC4973217 DOI: 10.1038/ijo.2016.62] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/26/2016] [Accepted: 03/22/2016] [Indexed: 12/21/2022]
Abstract
Rationale: Maternal obesity pre-programmes offspring to develop obesity and associated cardiovascular disease. Perivascular adipose tissue (PVAT) exerts an anti-contractile effect on the vasculature, which is reduced in hypertension and obesity. Objective: The objective of this study was to determine whether maternal obesity pre-programmes offspring to develop PVAT dysfunction in later life. Methods: Female Sprague–Dawley rats were fed a diet containing 10% (control) or 45% fat (high fat diet, HFD) for 12 weeks prior to mating and during pregnancy and lactation. Male offspring were killed at 12 or 24 weeks of age and tension in PVAT-intact or -denuded mesenteric artery segments was measured isometrically. Concentration–response curves were constructed to U46619 and norepinephrine. Results: Only 24-week-old HFD offspring were hypertensive (P<0.0001), although the anti-contractile effect of PVAT was lost in vessels from HFD offspring of each age. Inhibition of nitric oxide (NO) synthase with 100 μMl-NMMA attenuated the anti-contractile effect of PVAT and increased contractility of PVAT-denuded arteries (P<0.05, P<0.0001). The increase in contraction was smaller in PVAT-intact than PVAT-denuded vessels from 12-week-old HFD offspring, suggesting decreased PVAT-derived NO and release of a contractile factor (P<0.07). An additional, NO-independent effect of PVAT was evident only in norepinephrine-contracted vessels. Activation of AMP-activated kinase (with 10 μM A769662) was anti-contractile in PVAT-denuded (P<0.0001) and -intact (P<0.01) vessels and was due solely to NO in controls; the AMPK effect was similar in HFD offspring vessels (P<0.001 and P<0.01, respectively) but was partially NO-independent. Conclusions: The diminished anti-contractile effects of PVAT in offspring of HFD dams are primarily due to release of a PVAT-derived contractile factor and reduced NO bioavailability.
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Furuhashi M, Fuseya T, Murata M, Hoshina K, Ishimura S, Mita T, Watanabe Y, Omori A, Matsumoto M, Sugaya T, Oikawa T, Nishida J, Kokubu N, Tanaka M, Moniwa N, Yoshida H, Sawada N, Shimamoto K, Miura T. Local Production of Fatty Acid-Binding Protein 4 in Epicardial/Perivascular Fat and Macrophages Is Linked to Coronary Atherosclerosis. Arterioscler Thromb Vasc Biol 2016; 36:825-34. [PMID: 27013610 DOI: 10.1161/atvbaha.116.307225] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 03/14/2016] [Indexed: 12/18/2022]
Abstract
OBJECTIVE Fatty acid-binding protein 4 (FABP4) is expressed in adipocytes and macrophages, and elevated circulating FABP4 level is associated with obesity-mediated metabolic phenotype. We systematically investigated roles of FABP4 in the development of coronary artery atherosclerosis. APPROACH AND RESULTS First, by immunohistochemical analyses, we found that FABP4 was expressed in macrophages within coronary atherosclerotic plaques and epicardial/perivascular fat in autopsy cases and macrophages within thrombi covering ruptured coronary plaques in thrombectomy samples from patients with acute myocardial infarction. Second, we confirmed that FABP4 was secreted from macrophages and adipocytes cultured in vitro. Third, we investigated the effect of exogenous FABP4 on macrophages and human coronary artery-derived smooth muscle cells and endothelial cells in vitro. Treatment of the cells with recombinant FABP4 significantly increased gene expression of inflammatory markers in a dose-dependent manner. Finally, we measured serum FABP4 level in the aortic root (Ao-FABP4) and coronary sinus (CS-FABP4) of 34 patients with suspected or known coronary artery disease. Coronary stenosis score assessed by the modified Gensini score was weakly correlated with CS-FABP4 but was not correlated with Ao-FABP4. A stronger correlation (r=0.59, P<0.01) was observed for the relationship between coronary stenosis score and coronary veno-arterial difference in FABP4 level, (CS-Ao)-FABP4, indicating local production of FABP4 during coronary circulation in the heart. Multivariate analysis indicated that (CS-Ao)-FABP4 was an independent predictor of the severity of coronary stenosis after adjustment of conventional risk factors. CONCLUSIONS FABP4 locally produced by epicardial/perivascular fat and macrophages in vascular plaques contributes to the development of coronary atherosclerosis.
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Affiliation(s)
- Masato Furuhashi
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.).
| | - Takahiro Fuseya
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Masaki Murata
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Kyoko Hoshina
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Shutaro Ishimura
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Tomohiro Mita
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Yuki Watanabe
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Akina Omori
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Megumi Matsumoto
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Takeshi Sugaya
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Tsuyoshi Oikawa
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Junichi Nishida
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Nobuaki Kokubu
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Marenao Tanaka
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Norihito Moniwa
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Hideaki Yoshida
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Norimasa Sawada
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Kazuaki Shimamoto
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
| | - Tetsuji Miura
- From the Departments of Cardiovascular, Renal, and Metabolic Medicine (M.F., T.F., K.H., S.I., T.M., Y.W., A.O., M.M., J.N., N.K., M.T., N.M., H.Y., T.M.) and Molecular and Cellular Pathology (M.M., N.S.), Sapporo Medical University School of Medicine, Sapporo, Japan; Sapporo Medical University, Chuo-ku, Sapporo, Japan (K.S.); Department of Cardiovascular Internal Medicine, Obihiro Kosei Hospital, Obihiro, Japan (S.I., T.M.); Department of Nephrology and Hypertension, St. Marianna University School of Medicine, Sugao, Miyamae-ku, Kawasaki, Kanagawa, Japan (T.S.); and CIMIC Co, Ltd, Yushima, Bunkyo-ku, Tokyo, Japan (T.S., T.O.)
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He GW, Taggart DP. Spasm in Arterial Grafts in Coronary Artery Bypass Grafting Surgery. Ann Thorac Surg 2016; 101:1222-9. [DOI: 10.1016/j.athoracsur.2015.09.071] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2015] [Revised: 08/21/2015] [Accepted: 09/21/2015] [Indexed: 11/28/2022]
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