251
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Wray DW, Amann M, Richardson RS. Peripheral vascular function, oxygen delivery and utilization: the impact of oxidative stress in aging and heart failure with reduced ejection fraction. Heart Fail Rev 2018; 22:149-166. [PMID: 27392715 DOI: 10.1007/s10741-016-9573-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The aging process appears to be a precursor to many age-related diseases, perhaps the most impactful of which is cardiovascular disease (CVD). Heart disease, a manifestation of CVD, is the leading cause of death in the USA, and heart failure (HF), a syndrome that develops as a consequence of heart disease, now affects almost six million American. Importantly, as this is an age-related disease, this number is likely to grow along with the ever-increasing elderly population. Hallmarks of the aging process and HF patients with a reduced ejection fraction (HFrEF) include exercise intolerance, premature fatigue, and limited oxygen delivery and utilization, perhaps as a consequence of diminished peripheral vascular function. Free radicals and oxidative stress have been implicated in this peripheral vascular dysfunction, as a redox imbalance may directly impact the function of the vascular endothelium. This review aims to bring together studies that have examined the impact of oxidative stress on peripheral vascular function and oxygen delivery and utilization with both healthy aging and HFrEF.
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Affiliation(s)
- D Walter Wray
- Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
- Geriatric Research, Education, and Clinical Center, VA Medical Center, Bldg 2, Rm 1D25, 500 Foothill Drive, Salt Lake City, UT, 84148, USA
- Department of Exercise and Sport Science, University of Utah, Salt Lake City, UT, USA
| | - Markus Amann
- Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
- Geriatric Research, Education, and Clinical Center, VA Medical Center, Bldg 2, Rm 1D25, 500 Foothill Drive, Salt Lake City, UT, 84148, USA
- Department of Exercise and Sport Science, University of Utah, Salt Lake City, UT, USA
| | - Russell S Richardson
- Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA.
- Geriatric Research, Education, and Clinical Center, VA Medical Center, Bldg 2, Rm 1D25, 500 Foothill Drive, Salt Lake City, UT, 84148, USA.
- Department of Exercise and Sport Science, University of Utah, Salt Lake City, UT, USA.
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252
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Seto-Yukimura R, Ogawa E, Hisamatsu T, Torii S, Shiino A, Nozaki K, Fujiyoshi A, Miura K, Nakano Y, Ueshima H. Reduced Lung Function and Cerebral Small Vessel Disease in Japanese Men: the Shiga Epidemiological Study of Subclinical Atherosclerosis (SESSA). J Atheroscler Thromb 2018; 25:1009-1021. [PMID: 29459517 PMCID: PMC6193184 DOI: 10.5551/jat.42127] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Aim: We aimed to investigate the association between reduced lung function and cerebral small vessel diseases via cranial magnetic resonance imaging (MRI) in the cross-sectional study of the general Japanese population. Methods: We recruited participants aged ≥ 40 years from the general population of a single city in Japan. We clarified the comorbidities and treatments, smoking habits, second-hand smoke exposure, current alcohol consumption, education level, exercise habits, and occupation. The pulmonary function test was performed to assess the forced expiratory volume in 1 second (FEV1) % predicted and forced vital capacity (FVC) % predicted values. Cranial MRI was performed to evaluate the white matter lesions (WMLs) and lacunar infarcts. We examined the association of the WMLs and lacunar infarcts with a 1-standard deviation (SD) lower in the FEV1 % predicted and FVC % predicted, on the basis of the smoking status. Results: A total of 473 men were examined. The association of WMLs and lacunar infarcts with the spirometry-based indices were significant only in never smokers. The association between lung function impairment and cerebral small vessel disease did not change after further adjusting for second-hand smoke exposure. Conclusion: In a community-based sample of Japanese men, we found an association between reduced lung function and WMLs and lacunar infarcts in never smokers.
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Affiliation(s)
- Ruriko Seto-Yukimura
- Division of Respiratory Medicine, Department of Internal Medicine, Shiga University of Medical Science
| | - Emiko Ogawa
- Division of Respiratory Medicine, Department of Internal Medicine, Shiga University of Medical Science.,Health Administration Center, Shiga University of Medical Science
| | - Takashi Hisamatsu
- Department of Public Health, Shiga University of Medical Science.,Department of Environmental Medicine and Public Health, Faculty of Medicine, Shimane University
| | - Sayuki Torii
- Department of Public Health, Shiga University of Medical Science
| | - Akihiko Shiino
- Molecular Neuroscience Research Center, Shiga University of Medical Science
| | - Kazuhiko Nozaki
- Department of Neurosurgery, Shiga University of Medical Science
| | - Akira Fujiyoshi
- Department of Public Health, Shiga University of Medical Science
| | - Katsuyuki Miura
- Department of Public Health, Shiga University of Medical Science.,Center for Epidemiologic Research in Asia, Shiga University of Medical Science
| | - Yasutaka Nakano
- Division of Respiratory Medicine, Department of Internal Medicine, Shiga University of Medical Science
| | - Hirotsugu Ueshima
- Department of Public Health, Shiga University of Medical Science.,Center for Epidemiologic Research in Asia, Shiga University of Medical Science
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253
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Chen S, Zhou Y, Zhou L, Guan Y, Zhang Y, Han X. Anti-neovascularization effects of DMBT in age-related macular degeneration by inhibition of VEGF secretion through ROS-dependent signaling pathway. Mol Cell Biochem 2018; 448:225-235. [PMID: 29446046 DOI: 10.1007/s11010-018-3328-6] [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] [Received: 10/06/2017] [Accepted: 02/07/2018] [Indexed: 01/01/2023]
Abstract
Choroidal neovascularization (CNV) is the hallmark of late-staged wet age-related macular degeneration (AMD). Vascular endothelial growth factor (VEGF) is a key component in the development and progression of wet AMD. DMBT, 6,6'-bis(2,3-dimethoxybenzoyl)-α,α-D-trehalose, had been proved that it could suppress tumor angiogenesis and metastasis by inhibiting production of VEGF. But the effects of DMBT on CNV were not known. This study was to investigate effects and mechanisms of DMBT on CNV in vitro and in vivo. Results showed that DMBT could inhibit migration and tube formation of RF/6A cells under ARPE-19 hypoxia conditioned medium. DMBT could reduce lesion area in laser-induced CNV model mice. ELISA and Western blotting assay showed that DMBT markedly inhibited secretion of VEGF in vitro and in vivo. Furthermore, DMBT restrained ROS level under hypoxia via suppressing Nrf2/HO-1 pathway. DMBT effectively suppressed hypoxia-induced the up-regulation of p-Akt, p-NF-κB, and HIF-1α. These results suggest that DMBT can inhibit CNV by down-regulation of VEGF in retina through Akt/NF-κB/HIF-1α and ERK/Nrf2/HO-1/HIF-1α pathway. DMBT might be a promising lead molecule for anti-CNV and serve as a therapeutic agent to inhibit CNV.
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Affiliation(s)
- Shang Chen
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China.,Department of Ophthalmology, Graduate School of Medicine, Yamaguchi University, Minamikoguchi 1-1-1, Ube, Yamaguchi, 755-8505, Japan
| | - Yue Zhou
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China.,Department of Clinical Pharmacy, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China
| | - Lichun Zhou
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China
| | - Yanhui Guan
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China
| | - Yu Zhang
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China
| | - Xiuzhen Han
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, 44 West Wenhua Road, Jinan, 250012, China. .,Key Laboratory of Chemical Biology of Natural Products, Ministry of Education, Jinan, China.
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254
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Niu T, Xuan R, Jiang L, Wu W, Zhen Z, Song Y, Hong L, Zheng K, Zhang J, Xu Q, Tan Y, Yan X, Chen H. Astaxanthin Induces the Nrf2/HO-1 Antioxidant Pathway in Human Umbilical Vein Endothelial Cells by Generating Trace Amounts of ROS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1551-1559. [PMID: 29381356 DOI: 10.1021/acs.jafc.7b05493] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Astaxanthin is a powerful antioxidant that possesses potent protective effects against various human diseases and physiological disorders. However, the mechanisms underlying its antioxidant functions in cells are not fully understood. In the present study, the effects of astaxanthin on reactive oxygen species (ROS) production and antioxidant enzyme activity, as well as mitogen-activated protein kinases (MAPKs), phosphatidylinositol 3-kinase (PI3K)/Akt, and the nuclear factor erythroid 2-related factor 2 (Nrf-2)/heme oxygenase-1 (HO-1) pathways in human umbilical vein endothelial cells (HUVECs), were examined. It was shown that astaxanthin (0.1, 1, and 10 μM) induced ROS production by 9.35%, 14.8%, and 18.06% compared to control, respectively, in HUVECs. In addition, astaxanthin increased the mRNA levels of phase II enzymes HO-1 and also promoted GSH-Px enzyme activity. Furthermore, we observed ERK phosphorylation, nuclear translocation of Nrf-2, and activation of antioxidant response element-driven luciferase activity upon astaxanthin treatment. Knockdown of Nrf-2 by small interfering RNA inhibited HO-1 mRNA expression by 60%, indicating that the Nrf-2/ARE signaling pathway is activated by astaxanthin. Our results suggest that astaxanthin activates the Nrf-2/HO-1 antioxidant pathway by generating small amounts of ROS.
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Affiliation(s)
- Tingting Niu
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
- Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture School of Marine Sciences, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Rongrong Xuan
- Department of Gynecology and Obstetrics, The Affiliated Hospital of Medical College of Ningbo University , Ningbo, Zhejiang 315211, China
| | - Ligang Jiang
- PROYA Companies , Hangzhou, Zhejiang 310012, China
| | - Wei Wu
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Zhanghe Zhen
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Yuling Song
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Lili Hong
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Kaiqin Zheng
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Jiaxing Zhang
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Qingshan Xu
- Chenghai Baoer Bio-Ltd , Lijiang, Yunnan 674202, China
| | - Yinghong Tan
- Chenghai Baoer Bio-Ltd , Lijiang, Yunnan 674202, China
| | - Xiaojun Yan
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
| | - Haimin Chen
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University , Ningbo, Zhejiang 315211, China
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255
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Li J, Feng C, Li L, Yang S, Chen Y, Hui R, Zhang M, Zhang W. The association of telomere attrition with first-onset stroke in Southern Chinese: a case-control study and meta-analysis. Sci Rep 2018; 8:2290. [PMID: 29396405 PMCID: PMC5797248 DOI: 10.1038/s41598-018-20434-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 01/18/2018] [Indexed: 11/30/2022] Open
Abstract
The relationship between telomere length and stroke was inconsistent mostly due to different pathogenesis of subtypes, environment and genetics. We aimed to assess whether leukocyte telomere contributes to stroke in Southern Chinese by investigating a case-control study comprising 543 cases (224 atherothrombotic stroke, 94 hemorrhagic stroke and 225 lacunar infraction) and 616 controls and replicated the investigation in an independent study comprising 773 cases and 875 controls with the same diagnostic criteria. Telomere was inversely correlated with increasing age in controls (correlation coefficient γ = −0.28, P < 0.001) and in cases with atherothrombotic stroke (γ = −0.17, P = 0.012). Individuals within the lowest tertile of telomere showed a higher risk for atherothrombotic stroke [odds ratio 2.33, 95% confidence (CI) 1.42–3.83; P = 0.003], whereas had a lower presence of lacunar infarction (OR 0.49, 95% CI 0.30–0.81; P = 0.007). Similar results were obtained in the second replication study. A further meta-analysis showed a 12% increased pooled risk of ischemic stroke (95% CI 1.04–1.18) in relation to shorter telomere, but this association was stronger in the retrospective studies and in Asians when stratified by study design and ethnicity. Our data provided the first evidence that in Southern Chinese stroke population, leukocyte telomere is independently associated with atherothrombotic stroke and lacunar infarction.
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Affiliation(s)
- Jing Li
- Department of Neurology, The First People's Hospital of Huainan, Huainan, 232007, Anhui province, China
| | - Congrui Feng
- Beijing Institute for Brain Disorders, Center for Brain Disorders Research, Capital Medical University, Beijing, 100069, China.,State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road 167, Xicheng District, Beijing, 100037, China
| | - Liang Li
- Department of Surgical Intensive Care Unit, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road 167, Xicheng District, Beijing, 100037, China
| | - Shujun Yang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road 167, Xicheng District, Beijing, 100037, China
| | - Yu Chen
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road 167, Xicheng District, Beijing, 100037, China
| | - Rutai Hui
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road 167, Xicheng District, Beijing, 100037, China
| | - Mei Zhang
- Department of Neurology, The First People's Hospital of Huainan, Huainan, 232007, Anhui province, China.
| | - Weili Zhang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road 167, Xicheng District, Beijing, 100037, China.
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256
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Alves FC, Sun J, Qureshi AR, Dai L, Snaedal S, Bárány P, Heimbürger O, Lindholm B, Stenvinkel P. The higher mortality associated with low serum albumin is dependent on systemic inflammation in end-stage kidney disease. PLoS One 2018; 13:e0190410. [PMID: 29298330 PMCID: PMC5752034 DOI: 10.1371/journal.pone.0190410] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 12/14/2017] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The correlation of low serum albumin with mortality in patients with chronic kidney disease (CKD) is partly linked to its association with systemic inflammation. However, it is not clear to what extent albumin's correlation with mortality depends on concomitant systemic inflammation. Here we addressed this question in patients with CKD stage 5. METHODS Serum albumin (S-Alb), systemic inflammation (high-sensitive C-reactive protein, hsCRP), cardiovascular disease (CVD) and nutritional status (subjective global assessment, SGA) were assessed at baseline in 822 patients: 523 incident dialysis patients, 212 prevalent hemodialysis (HD) and 87 prevalent peritoneal dialysis (PD) patients. Patients were divided into four groups according to hsCRP and S-Alb in each cohort: Group 1 -normal S-Alb and normal hsCRP (reference); Group 2 -low S-Alb and normal hsCRP; Group 3-normal S-Alb and high hsCRP; Group 4-low S-Alb and high hsCRP. Survival over 60 months was analyzed. RESULTS In Cox analysis, Group 4 had an increased mortality risk (adjusted Hazard ratio (95% confidence interval): 1.62 (1.06-2.47); p = 0.02) whereas the augmented mortality risks for Groups 2 and 3 in univariate analyses were not significant after adjustments for age, gender, blood pressure, diabetes mellitus, smoking, SGA, renal function and renal replacement technique. CONCLUSIONS Whereas mortality risk was increased in CKD stage 5 patients with low S-Alb and high CRP, it was not increased in patients with low S-Alb and normal CRP. Our observation suggests that inflammatory status should be taken into account when using S-albumin for risk assessment in CKD stage 5 patients.
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Affiliation(s)
- Filipa Caeiro Alves
- Hospital Espírito Santo, Évora, Portugal
- Renal Medicine and Baxter Novum, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Jia Sun
- Renal Medicine and Baxter Novum, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Abdul Rashid Qureshi
- Renal Medicine and Baxter Novum, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Lu Dai
- Renal Medicine and Baxter Novum, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Sunna Snaedal
- Renal Medicine and Baxter Novum, CLINTEC, Karolinska Institutet, Stockholm, Sweden
- Landspitali University Hospital, Reykjavik, Iceland
| | - Peter Bárány
- Renal Medicine and Baxter Novum, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Olof Heimbürger
- Renal Medicine and Baxter Novum, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Bengt Lindholm
- Renal Medicine and Baxter Novum, CLINTEC, Karolinska Institutet, Stockholm, Sweden
| | - Peter Stenvinkel
- Renal Medicine and Baxter Novum, CLINTEC, Karolinska Institutet, Stockholm, Sweden
- * E-mail:
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257
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Ke S, Lai Y, Zhou T, Li L, Wang Y, Ren L, Ye S. Molybdenum Disulfide Nanoparticles Resist Oxidative Stress-Mediated Impairment of Autophagic Flux and Mitigate Endothelial Cell Senescence and Angiogenic Dysfunctions. ACS Biomater Sci Eng 2018; 4:663-674. [PMID: 33418754 DOI: 10.1021/acsbiomaterials.7b00714] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The impairment of autophagy involves oxidative stress-induced cellular senescence, leading to endothelial dysfunctions and the onset of cardiovascular diseases. As molybdenum disulfide nanoparticles (MoS2 NPs), representative transition metal dichacogenide materials, have great potential as a multifunctional therapeutic agent against various disorders, the present study aimed to investigate whether MoS2 NPs prevents hydrogen peroxide (H2O2)-induced endothelial senescence by modulating autophagic process. Our results showed that pretreatment with MoS2 NPs inhibited H2O2-induced endothelial senescence and improved endothelial functions. Exposure of H2O2 increased p62 level and blocked the fusion of autophagosomes with lysosomes, indicating of impaired autophagic flux in senescent endothelial cells. However, MoS2 NPs pretreatment efficiently suppressed cellular senescence through triggering autophagy and resisting impaired autophagic flux. Furthermore, the genetic inhibition of autophagy by siRNA against Beclin 1 or ATG-5 directly abrogated the protective action of MoS2 NPs on endothelial cells against H2O2-induced senescence.Thus, these results suggested that MoS2 NPs rescue endothelial cells from H2O2-induced senescence by improving autophagic flux, and provide valuable information for the rational design of MoS2-based nanomaterials for therapeutic use in senescence-related diseases.
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Affiliation(s)
- Sunkui Ke
- Department of Thoracic Surgery, Zhongshan Hospital of Xiamen University, Xiamen 361004, P. R. China
| | - Youlin Lai
- Department of Obstetrics, Xiamen Maternity and Care Hospital, Xiamen 361000, P. R. China
| | - Tong Zhou
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Lihuang Li
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Yange Wang
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Lei Ren
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Shefang Ye
- Department of Biomaterials, College of Materials, Xiamen University, Xiamen 361005, P. R. China
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258
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Gaspari T, Spizzo I, Liu H, Hu Y, Simpson RW, Widdop RE, Dear AE. Dapagliflozin attenuates human vascular endothelial cell activation and induces vasorelaxation: A potential mechanism for inhibition of atherogenesis. Diab Vasc Dis Res 2018; 15:64-73. [PMID: 28976221 DOI: 10.1177/1479164117733626] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Sodium glucose transporter type 2 inhibitors may reduce cardiovascular events in type 2 diabetes. Our study aimed to determine the effect of the sodium glucose transporter type 2 inhibitor dapagliflozin on endothelial cell activation, vasoreactivity and atherogenesis using in vitro and in vivo models and identify associated molecular mechanisms. METHODS In vitro studies utilised human vascular endothelial cells stimulated with tumour necrosis factor α or hyperglycaemic conditions. In vivo studies were performed in C57Bl/6J mice to evaluate direct vasorelaxation responses evoked by acute dapagliflozin administration and acute vaso-protective effects of dapagliflozin on hyperglycaemia-induced endothelial dysfunction. Adult and aged Apolipoprotein E-deficient mice maintained on a high-fat diet were used to investigate endothelial-dependent vascular reactivity and atherogenesis. Dapagliflozin treatment (1.0 mg/kg/day) was administered for 4 weeks. RESULTS In vitro studies demonstrated dapagliflozin-mediated attenuation of tumour necrosis factor α- and hyperglycaemia-induced increases in intercellular adhesion molecule-1, vascular cell adhesion molecule-1, plasminogen activator inhibitor type 1 and NFκB expression. Acute dapagliflozin administration dose-dependently induced endothelium-independent vasorelaxation. Chronic dapagliflozin treatment improved endothelial function and significantly reduced in vivo vascular adhesion molecule and phospho-IκB expression together with macrophage vessel wall infiltration. CONCLUSION These observations identify a potential role for dapagliflozin in the attenuation of atherogenesis and identify anti-inflammatory molecular mechanisms associated with these effects.
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Affiliation(s)
- Tracey Gaspari
- 1 Department of Pharmacology, Monash University, Melbourne, VIC, Australia
| | - Iressa Spizzo
- 1 Department of Pharmacology, Monash University, Melbourne, VIC, Australia
| | - HongBin Liu
- 2 Eastern Health Clinical School and Department of Medicine, Monash University, Melbourne, VIC, Australia
| | - Yunshan Hu
- 2 Eastern Health Clinical School and Department of Medicine, Monash University, Melbourne, VIC, Australia
| | - Richard W Simpson
- 2 Eastern Health Clinical School and Department of Medicine, Monash University, Melbourne, VIC, Australia
| | - Robert E Widdop
- 1 Department of Pharmacology, Monash University, Melbourne, VIC, Australia
| | - Anthony E Dear
- 2 Eastern Health Clinical School and Department of Medicine, Monash University, Melbourne, VIC, Australia
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259
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Mathew John C, Khaddaj Mallat R, George G, Kim T, Mishra RC, Braun AP. Pharmacologic targeting of endothelial Ca 2+-activated K + channels: A strategy to improve cardiovascular function. Channels (Austin) 2018; 12:126-136. [PMID: 29577810 PMCID: PMC5972810 DOI: 10.1080/19336950.2018.1454814] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 03/15/2018] [Indexed: 12/17/2022] Open
Abstract
Endothelial small and intermediate-conductance, Ca2+-activated K+ channels (KCa2.3 and KCa3.1, respectively) play an important role in the regulation of vascular function and systemic blood pressure. Growing evidence indicates that they are intimately involved in agonist-evoked vasodilation of small resistance arteries throughout the circulation. Small molecule activators of KCa2.x and 3.1 channels, such as SKA-31, can acutely inhibit myogenic tone in isolated resistance arteries, induce effective vasodilation in intact vascular beds, such as the coronary circulation, and acutely decrease systemic blood pressure in vivo. The blood pressure-lowering effect of SKA-31, and early indications of improvement in endothelial dysfunction suggest that endothelial KCa channel activators could eventually be developed into a new class of endothelial targeted agents to combat hypertension or atherosclerosis. This review summarises recent insights into the activation of endothelial Ca2+ activated K+ channels in various vascular beds, and how tools, such as SKA-31, may be beneficial in disease-related conditions.
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Affiliation(s)
- Cini Mathew John
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Rayan Khaddaj Mallat
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Grace George
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Taeyeob Kim
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Ramesh C. Mishra
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Andrew P. Braun
- Department of Physiology and Pharmacology, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
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260
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Jing T, Ya-Shu K, Xue-Jun W, Han-Jing H, Yan L, Yi-An Y, Fei C, Xue-Bo L. Sirt6 mRNA-incorporated endothelial microparticles (EMPs) attenuates DM patient-derived EMP-induced endothelial dysfunction. Oncotarget 2017; 8:114300-114313. [PMID: 29371988 PMCID: PMC5768405 DOI: 10.18632/oncotarget.23259] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 12/03/2017] [Indexed: 11/25/2022] Open
Abstract
Background Endothelial microparticles (EMPs) are small vesicles released by endothelial cells (ECs); they are considered biomarkers for endothelial dysfunction and therapeutic targets in diabetes-related vascular disease. Sirtuins have also been shown to play important roles in diabetes by regulating endothelial dysfunction. However, the effect of sirtuin-incorporated EMPs on their parental ECs remains unknown. Aim The present study aims to investigate the diagnostic value of EMPs in diabetes and detect the protective effects of sirtuin 6 (Sirt6) mRNA -incorporated EMPs on endothelial dysfunction. Methods EMPs were prepared from cultured HUVECs and venous blood from patients with diabetes (n=10) and from healthy volunteers (n=6) after sequential centrifugation. Adv-Sirt6 or Sirt6 siRNA was used to alter Sirt6 expression. EC angiogenesis, inflammatory phenotypes, nitric oxide (NO) formation and eNOS phosphorylation were used to evaluate endothelial dysfunction. Results The levels of EMPs in diabetic patients and high glucose-cultured HUVECs are high, whereas Sirt6 expression in plasma and EMPs is low. EMPs generated from diabetic patients or high glucose-cultured HUVECs increase inflammatory chemokine release and blunt EC angiogenesis. Furthermore, EMPs enriched with Sirt6 mRNA induces EC angiogenesis, increases eNOS phosphorylation and impedes inflammatory chemokine release. Inhibition of Sirt6 mRNA expression in EMPs by siRNA hinders angiogenesis and eNOS phosphorylation but increases cellular inflammation. Conclusion The Sirt6 mRNA-carrying EMPs may ameliorate endothelial dysfunction in diabetic patients.
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Affiliation(s)
- Tong Jing
- Department of Cardiology, Shanghai Tongji Hospital, Tongji University, Shanghai, China
| | - Kuang Ya-Shu
- Department of Cardiology, Shanghai Tongji Hospital, Tongji University, Shanghai, China
| | - Wang Xue-Jun
- Department of Cardiology, Shanghai Tongji Hospital, Tongji University, Shanghai, China
| | - Hou Han-Jing
- Department of Cardiology, Shanghai Tongji Hospital, Tongji University, Shanghai, China
| | - Lai Yan
- Department of Cardiology, Shanghai Tongji Hospital, Tongji University, Shanghai, China
| | - Yao Yi-An
- Department of Cardiology, Shanghai Tongji Hospital, Tongji University, Shanghai, China
| | - Chen Fei
- Department of Cardiology, Shanghai Tongji Hospital, Tongji University, Shanghai, China
| | - Liu Xue-Bo
- Department of Cardiology, Shanghai Tongji Hospital, Tongji University, Shanghai, China
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261
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de Oliveira GV, Morgado M, Conte-Junior CA, Alvares TS. Acute effect of dietary nitrate on forearm muscle oxygenation, blood volume and strength in older adults: A randomized clinical trial. PLoS One 2017; 12:e0188893. [PMID: 29190751 PMCID: PMC5708833 DOI: 10.1371/journal.pone.0188893] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Accepted: 11/14/2017] [Indexed: 12/24/2022] Open
Abstract
Both recovery time of post-exercise muscle oxygenation and muscle strength decline with aging. Although beetroot consumption has been shown to improve muscle oxygenation and exercise performance in adults, these effects in the elderly has not been addressed. The aim of the present study was to evaluate the effect of a beetroot-based gel (BG) on muscle O2 saturation, blood volume (tHb) and handgrip strength in the elderly in response to handgrip exercise. In a randomized crossover double-blind design, twelve older subjects consumed BG (100 g of beetroot-based gel containing ~ 12 mmol nitrate) or PLA (100 g of nitrate-depleted gel nitrate-depleted). The subjects performed a rhythmic handgrip exercise which consisted of a one 1-min set at 30% of the maximal voluntary contraction (MVC) of each subject, followed by a 1 min recovery. The muscle oxygenation parameters and tHb were continuously monitored by using near-infrared spectroscopy. MVC was evaluated at baseline, immediately after exercise, and 30 min afterwards. The muscle O2 resaturation rate during exercise recovery was greater in the BG when compared to PLA condition (1.43 ± 0.77 vs 1.02 ± 0.48%.s-1; P < 0.05). Significant increase was observed in tHb during exercise recovery (10.25 ± 5.47 vs 6.72 ± 4.55 μM; P < 0.05) and significant reduction of handgrip strength decline was observed 30 min after exercise in BG (- 0.24 ± 0.18 vs—0.39 ± 0.20 N; P < 0.05). In summary, a single dose of a beetroot-based gel speeds up muscle O2 resaturation, increases blood volume and improves recovery of handgrip strength after handgrip exercise in older adults.
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Affiliation(s)
- Gustavo Vieira de Oliveira
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Universidade Federal do Rio de Janeiro, Macaé, Rio de Janeiro, Brazil
| | - Marina Morgado
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Universidade Federal do Rio de Janeiro, Macaé, Rio de Janeiro, Brazil
| | | | - Thiago Silveira Alvares
- Nutrition and Exercise Metabolism Research Group, Nutrition Institute, Universidade Federal do Rio de Janeiro, Macaé, Rio de Janeiro, Brazil
- Department of Basic Nutrition and Dietetics, Nutrition Institute, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail:
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262
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Kitada M, Ogura Y, Koya D. The protective role of Sirt1 in vascular tissue: its relationship to vascular aging and atherosclerosis. Aging (Albany NY) 2017; 8:2290-2307. [PMID: 27744418 PMCID: PMC5115889 DOI: 10.18632/aging.101068] [Citation(s) in RCA: 186] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Accepted: 09/30/2016] [Indexed: 12/21/2022]
Abstract
Cardiovascular disease (CVD) due to atherosclerosis is the main cause of death in both the elderly and patients with metabolic diseases, including diabetes. Aging processes contribute to the pathogenesis of atherosclerosis. Calorie restriction (CR) is recognized as a dietary intervention for promoting longevity and delaying age-related diseases, including atherosclerosis. Sirt1, an NAD+-dependent deacetylase, is considered an anti-aging molecule and is induced during CR. Sirt1 deacetylates target proteins and is linked to cellular metabolism, the redox state and survival pathways. Sirt1 expression/activation is decreased in vascular tissue undergoing senescence. Sirt1 deficiency in endothelial cells (ECs), vascular smooth muscle cells (VSMCs) and monocytes/macrophages contributes to increased oxidative stress, inflammation, foam cell formation, senescences impaired nitric oxide production and autophagy, thereby promoting vascular aging and atherosclerosis. Endothelial dysfunction, activation of monocytes/macrophages, and the functional and phenotypical plasticity of VSMCs are critically implicated in the pathogenesis of atherosclerosis through multiple mechanisms. Therefore, the activation of Sirt1 in vascular tissue, which includes ECs, monocytes/macrophages and VSMCs, may be a new therapeutic strategy against atherosclerosis and the increasing resistance to the metabolic disorder-related causal factors of CVD. In this review, we discuss the protective role of Sirt1 in the pathophysiology of vascular aging and atherosclerosis.
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Affiliation(s)
- Munehiro Kitada
- Department of Diabetology and Endocrinology, Kanazawa Medical University. Uchinada, Ishikawa, Japan.,Division of Anticipatory Molecular Food Science and Technology, Medical Research Institute, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | - Yoshio Ogura
- Department of Diabetology and Endocrinology, Kanazawa Medical University. Uchinada, Ishikawa, Japan
| | - Daisuke Koya
- Department of Diabetology and Endocrinology, Kanazawa Medical University. Uchinada, Ishikawa, Japan.,Division of Anticipatory Molecular Food Science and Technology, Medical Research Institute, Kanazawa Medical University, Uchinada, Ishikawa, Japan
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263
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Alique M, Ruíz-Torres MP, Bodega G, Noci MV, Troyano N, Bohórquez L, Luna C, Luque R, Carmona A, Carracedo J, Ramírez R. Microvesicles from the plasma of elderly subjects and from senescent endothelial cells promote vascular calcification. Aging (Albany NY) 2017; 9:778-789. [PMID: 28278131 PMCID: PMC5391231 DOI: 10.18632/aging.101191] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 02/26/2017] [Indexed: 11/25/2022]
Abstract
Vascular calcification is commonly seen in elderly people, though it can also appear in middle-aged subjects affected by premature vascular aging. The aim of this work is to test the involvement of microvesicles (MVs) produced by senescent endothelial cells (EC) and from plasma of elderly people in vascular calcification. The present work shows that MVs produced by senescent cultured ECs, plus those found in the plasma of elderly subjects, promote calcification in vascular smooth muscle cells. Only MVs from senescent ECs, and from elderly subjects' plasma, induced calcification. This ability correlated with these types of MVs' carriage of: a) increased quantities of annexins (which might act as nucleation sites for calcification), b) increased quantities of bone-morphogenic protein, and c) larger Ca contents. The MVs of senescent, cultured ECs, and those present in the plasma of elderly subjects, promote vascular calcification. The present results provide mechanistic insights into the observed increase in vascular calcification-related diseases in the elderly, and in younger patients with premature vascular aging, paving the way towards novel therapeutic strategies.
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Affiliation(s)
- Matilde Alique
- Departamento de Biología de Sistemas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain.,These authors contributed equally to this paper
| | - María Piedad Ruíz-Torres
- Departamento de Biología de Sistemas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain.,These authors contributed equally to this paper
| | - Guillermo Bodega
- Departamento de Biomedicina y Biotecnología, Facultad de Biología, Química y Ciencias Ambientales, Universidad de Alcalá. Alcalá de Henares, Madrid, Spain
| | - María Victoria Noci
- Unidad de Anestesia, Hospital Universitario Reina Sofía/Universidad de Córdoba, Córdoba, Andalucía, Spain.,Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/Hospital Universitario Reina Sofía/Universidad de Córdoba, Córdoba, Andalucía, Spain
| | - Nuria Troyano
- Departamento de Biología de Sistemas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - Lourdes Bohórquez
- Departamento de Biología de Sistemas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain
| | - Carlos Luna
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/Hospital Universitario Reina Sofía/Universidad de Córdoba, Córdoba, Andalucía, Spain
| | - Rafael Luque
- Departamento de Química Orgánica, Universidad de Córdoba, Edificio Marie Curie (C-3), Carretera Nacional IV-A, Km 396, E14014, Córdoba, Andalucía, Spain
| | - Andrés Carmona
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/Hospital Universitario Reina Sofía/Universidad de Córdoba, Córdoba, Andalucía, Spain
| | - Julia Carracedo
- Departamento de Fisiología Animal (II), Facultad de Biología, Universidad Complutense de Madrid, Madrid, Spain.,Institute of Investigation, Hospital 12 de Octubre, Madrid, Spain.,These senior authors contributed equally to this paper
| | - Rafael Ramírez
- Departamento de Biología de Sistemas, Facultad de Medicina y Ciencias de la Salud, Universidad de Alcalá, Alcalá de Henares, Madrid, Spain.,These senior authors contributed equally to this paper
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264
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Endothelial and kidney function in women with a history of preeclampsia and healthy parous controls: A case control study. Microvasc Res 2017; 116:71-76. [PMID: 29126987 DOI: 10.1016/j.mvr.2017.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 10/07/2017] [Accepted: 11/06/2017] [Indexed: 01/09/2023]
Abstract
INTRODUCTION Preeclampsia (PE) is a pregnancy related endothelial disease characterized by hypertension and albuminuria. Postpartum endothelial dysfunction often persists in these women. We postulate that in women with a history of PE reduced endothelial dependent vasodilation coincides with attenuated kidney function, as both reflect endothelial dysfunction. METHODS We assessed endothelial and kidney function in women with a history of PE (n=79) and uncomplicated pregnancies (n=49) at least 4years postpartum. Women with hypertension, diabetes or kidney disease prior to pregnancy were excluded. Brachial artery flow mediated dilatation (FMD) was measured and analysed by a custom designed edge-detection and wall-tracking software. We measured albumin and creatinine levels in a 24-h urine sample and calculated glomerular filtration rate (GFR) by CKD-EPI. RESULTS Women with a history of PE had lower FMD but comparable GFR and albumin creatinine ratio (ACR) compared with controls. Independent of obstetric history, in both controls and women with a history of PE respectively, GFR (r=0.19, p=0.17 and r=0.12, p=0.29) and albumin creatinine ratio (r=0.07, p=0.62 and r=0.06 p=0.57) did not correlate with FMD. CONCLUSION At least 4years after pregnancy, women with a history of PE demonstrated decreased flow mediated dilatation when compared to healthy parous controls. In this study, decreased flow mediated dilation however did not coincide with decreased kidney function.
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265
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Saavedra J. Beneficial effects of Angiotensin II receptor blockers in brain disorders. Pharmacol Res 2017; 125:91-103. [DOI: 10.1016/j.phrs.2017.06.017] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 06/17/2017] [Accepted: 06/28/2017] [Indexed: 12/11/2022]
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266
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Khaddaj Mallat R, Mathew John C, Kendrick DJ, Braun AP. The vascular endothelium: A regulator of arterial tone and interface for the immune system. Crit Rev Clin Lab Sci 2017; 54:458-470. [PMID: 29084470 DOI: 10.1080/10408363.2017.1394267] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
As the primary interface between the blood and various tissues of the body, the vascular endothelium exhibits a diverse range of roles and activities, all of which contribute to the overall health and function of the cardiovascular system. In this focused review, we discuss several key aspects of endothelial function, how this may be compromised and subsequent consequences. Specifically, we examine the dynamic regulation of arterial contractility and distribution of blood flow through the generation of chemical and electrical signaling events that impinge upon vascular smooth muscle. The endothelium can generate a diverse range of vasoactive compounds and signals, most of which act locally to adjust blood flow in a dynamic fashion to match tissue metabolism. Disruption of these vascular signaling processes (e.g. reduced nitric oxide bioavailability) is typically referred to as endothelial dysfunction, which is a recognized risk factor for cardiovascular disease in patients and occurs early in the development and progression of hypertension, atherosclerosis and tissue ischemia. Endothelial dysfunction is also associated with type-2 Diabetes and aging and increased mechanistic knowledge of the cellular changes contributing to these effects may provide important clues for interventional strategies. The endothelium also serves as the initial site of interaction for immune cells entering tissues in response to damage and acts to facilitate the actions of both the innate and acquired immune systems to interact with the vascular wall. In addition to representing the main cell type responsible for the formation of new blood vessels (i.e. angiogenesis) within the vasculature, the endothelium is also emerging as a source of extracellular vesicle or microparticles for the transport of signaling molecules and other cellular materials to nearby, or remote, sites in the body. The characteristics of released microparticles appear to change with the functional status of the endothelium; thus, these microparticles may represent novel biomarkers of endothelial health and more serious cardiovascular disease.
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Affiliation(s)
- Rayan Khaddaj Mallat
- a Department of Physiology and Pharmacology, Cumming School of Medicine , University of Calgary, and Libin Cardiovascular Institute of Alberta , Calgary , Canada
| | - Cini Mathew John
- a Department of Physiology and Pharmacology, Cumming School of Medicine , University of Calgary, and Libin Cardiovascular Institute of Alberta , Calgary , Canada
| | - Dylan J Kendrick
- a Department of Physiology and Pharmacology, Cumming School of Medicine , University of Calgary, and Libin Cardiovascular Institute of Alberta , Calgary , Canada
| | - Andrew P Braun
- a Department of Physiology and Pharmacology, Cumming School of Medicine , University of Calgary, and Libin Cardiovascular Institute of Alberta , Calgary , Canada
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267
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Yan J, Wang J, Huang H, Huang Y, Mi T, Zhang C, Zhang L. Fibroblast growth factor 21 delayed endothelial replicative senescence and protected cells from H 2O 2-induced premature senescence through SIRT1. Am J Transl Res 2017; 9:4492-4501. [PMID: 29118911 PMCID: PMC5666058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/24/2017] [Indexed: 06/07/2023]
Abstract
Vascular aging is an independent risk factor for age-related diseases, including atherosclerosis. Fibroblast growth factor 21 (FGF21) has been widely recognized as a metabolic regulator that is elevated in response to caloric and nutritional restrictions. Recent studies have demonstrated its emerging role as a pro-longevity hormone, but its effects on the senescence of human umbilical vascular endothelial cells (HUVECs) remain unclear. In the present study, we explored the anti-senescence effects and underlying mechanism of FGF21 on HUVECs. Co-cultivation of HUVECs with 5 ng/mL FGF21 significantly attenuated the phenotype changes of cells during in vitro subculture, including increased senescent population, decreased proliferation rate, decreased SIRT1 and elevated P53 and P21 protein levels. FGF21 also protected HUVECs from H2O2-induced cell damage, including premature cell senescence, intracellular accumulation of reactive oxygen species, increased DNA damage, decreased SIRT1 protein level and elevated protein levels of VCAM-1, ICAM-1, P53 and P21. Transient knockdown of SIRT1 in HUVECs significantly suppressed the protective effects of FGF21 for the rescue of H2O2-induced premature senescence and DNA damage, which suggests that the anti-senescence effect of FGF21 on HUVECs is SIRT1-dependent. These results support the potential of FGF21 as a therapeutic target for postponing vascular aging and preventing age-related vascular diseases.
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Affiliation(s)
- Jinhua Yan
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, P. R. China
| | - Jinli Wang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, P. R. China
| | - Huijin Huang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, P. R. China
| | - Yi Huang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, P. R. China
| | - Tao Mi
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, P. R. China
| | - Cuntai Zhang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, P. R. China
| | - Le Zhang
- Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, P. R. China
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268
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LaRocca TJ, Martens CR, Seals DR. Nutrition and other lifestyle influences on arterial aging. Ageing Res Rev 2017; 39:106-119. [PMID: 27693830 DOI: 10.1016/j.arr.2016.09.002] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 09/16/2016] [Accepted: 09/23/2016] [Indexed: 02/07/2023]
Abstract
As our world's population ages, cardiovascular diseases (CVD) will become an increasingly urgent public health problem. A key antecedent to clinical CVD and many other chronic disorders of aging is age-related arterial dysfunction, characterized by increased arterial stiffness and impaired arterial endothelial function. Accumulating evidence demonstrates that diet and nutrition may favorably modulate these arterial functions with aging, but many important questions remain. In this review, we will summarize the available information on dietary patterns and nutritional factors that have been studied for their potential to reduce arterial stiffness and improve endothelial function with age, with an emphasis on: 1) underlying physiological mechanisms, and 2) emerging areas of research on nutrition and arterial aging that may hold promise for preventing age-related CVD.
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Affiliation(s)
- Thomas J LaRocca
- Department of Integrative Physiology, University of Colorado Boulder, 354 UCB, Boulder, CO 80309, USA.
| | - Christopher R Martens
- Department of Integrative Physiology, University of Colorado Boulder, 354 UCB, Boulder, CO 80309, USA
| | - Douglas R Seals
- Department of Integrative Physiology, University of Colorado Boulder, 354 UCB, Boulder, CO 80309, USA
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269
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Martin JV, Liberati DM, Diebel LN. Disparate effects of catecholamines under stress conditions on endothelial glycocalyx injury: An in vitro model. Am J Surg 2017; 214:1166-1172. [PMID: 28974313 DOI: 10.1016/j.amjsurg.2017.09.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Revised: 09/01/2017] [Accepted: 09/20/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Geriatric trauma patients have high circulating norepinephrine (NE) levels but attenuated release of epinephrine (Epi) in response to increasing severity of injury. We hypothesized that NE and Epi have different effects on the endothelial and glycocalyx components of the vascular barrier following shock. METHODS Human umbilical vein endothelial cells (HUVEC) were treated with varying concentrations of NE or Epi and exposed to simulated shock conditions (HR). Relevant biomarkers were sampled to index glycocalyx injury and endothelial cell activation. RESULTS NE was associated with significantly greater glycocalyx damage and endothelial activation/injury vs. Epi treatment groups. There were minimal changes in PAI-1 with either NE or Epi ± H/R. However NE ± H/R was associated with significantly higher tPA levels. CONCLUSIONS NE favors a profibrinolytic state. Our study supports investigating liberal use of the anti-fibrinolytic agent tranexamic acid in the severely injured geriatric trauma patient.
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Affiliation(s)
- Jonathan V Martin
- Michael and Marian Ilitch Department of Surgery, Wayne State University, Detroit, MI, USA.
| | - David M Liberati
- Michael and Marian Ilitch Department of Surgery, Wayne State University, Detroit, MI, USA.
| | - Lawrence N Diebel
- Michael and Marian Ilitch Department of Surgery, Wayne State University, Detroit, MI, USA.
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270
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The Role of Nrf2 in Cardiovascular Function and Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:9237263. [PMID: 29104732 PMCID: PMC5618775 DOI: 10.1155/2017/9237263] [Citation(s) in RCA: 175] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 07/27/2017] [Indexed: 02/07/2023]
Abstract
Free radicals, reactive oxygen/nitrogen species (ROS/RNS), hydrogen sulphide, and hydrogen peroxide play an important role in both intracellular and intercellular signaling; however, their production and quenching need to be closely regulated to prevent cellular damage. An imbalance, due to exogenous sources of free radicals and chronic upregulation of endogenous production, contributes to many pathological conditions including cardiovascular disease and also more general processes involved in aging. Nuclear factor erythroid 2-like 2 (NFE2L2; commonly known as Nrf2) is a transcription factor that plays a major role in the dynamic regulation of a network of antioxidant and cytoprotective genes, through binding to and activating expression of promoters containing the antioxidant response element (ARE). Nrf2 activity is regulated by many mechanisms, suggesting that tight control is necessary for normal cell function and both hypoactivation and hyperactivation of Nrf2 are indicated in playing a role in different aspects of cardiovascular disease. Targeted activation of Nrf2 or downstream genes may prove to be a useful avenue in developing therapeutics to reduce the impact of cardiovascular disease. We will review the current status of Nrf2 and related signaling in cardiovascular disease and its relevance to current and potential treatment strategies.
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271
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Malavolta M, Costarelli L, Giacconi R, Basso A, Piacenza F, Pierpaoli E, Provinciali M, Ogo OA, Ford D. Changes in Zn homeostasis during long term culture of primary endothelial cells and effects of Zn on endothelial cell senescence. Exp Gerontol 2017; 99:35-45. [PMID: 28918363 DOI: 10.1016/j.exger.2017.09.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 09/05/2017] [Accepted: 09/08/2017] [Indexed: 02/07/2023]
Abstract
Endothelial cell senescence and Zn nutritional status influence cardiovascular disease. The influence of Zn appears dichotomous, hence it is imperative to understand the relationship with cellular senescence to improve knowledge about the molecular and cellular basis of the disease. Here we aimed to determine: 1) the impact of chronic exposure to a moderately high dose of Zn on senescence of endothelial cells; 2) the changes in Zn homeostasis during the lifespan of primary cultured endothelial cells; and 3) the susceptibility of proliferating and senescent endothelial cells to cell death after short term exposure to increasing doses of Zn and of the Zn chelator TPEN. Chronic exposure to Zn accelerated senescence and untreated cells at later passages, where doubling time had increased, displayed relocation of labile Zn and altered expression of genes involved in the response to Zn toxicity, including SLC30A1, SLC39A6, SLC30A5, SLC30A10 and metallothioneins, indicating that senescent cells have altered zinc homeostasis. Most Zn-dependent genes that were expressed differently between early and late passages were correlated with changes in the expression of anti-apoptotic genes. Short-term treatment with a high dose of Zn leads to cell death, but only in the population of cells at both earlier and later passages that had already entered senescence. In contrast, Zn depletion led to death of cells at earlier but not later passages, which suggests that there are sub-populations of senescent cells that are resistant to Zn depletion. This resistant senescent cell population may accumulate under conditions of Zn deficiency and contribute to vascular pathology.
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Affiliation(s)
- Marco Malavolta
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy.
| | - Laura Costarelli
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Robertina Giacconi
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Andrea Basso
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Francesco Piacenza
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Elisa Pierpaoli
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Mauro Provinciali
- Advanced Technology Center for Aging Research, Scientific and Technological Pole, Italian National Institute of Health and Science on Aging (INRCA), Ancona, Italy
| | - Ogo A Ogo
- Institute for Cell and Molecular Biosciences, University of Newcastle, Newcastle upon Tyne, UK
| | - Dianne Ford
- Faculty of Health and Life Sciences, Northumbria University, Newcastle upon Tyne, UK
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272
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Tsuda H, Tsuji T, Tsuji M, Yamasaki H. Life-threatening bleeding episodes in primary immune thrombocytopenia: a single-center retrospective study of 169 inpatients. Ann Hematol 2017; 96:1915-1920. [DOI: 10.1007/s00277-017-3095-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Accepted: 08/07/2017] [Indexed: 01/19/2023]
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273
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Leng YP, Ma YS, Li XG, Chen RF, Zeng PY, Li XH, Qiu CF, Li YP, Zhang Z, Chen AF. l-Homocysteine-induced cathepsin V mediates the vascular endothelial inflammation in hyperhomocysteinaemia. Br J Pharmacol 2017. [PMID: 28631302 DOI: 10.1111/bph.13920] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE Vascular inflammation, including the expression of inflammatory cytokines in endothelial cells, plays a critical role in hyperhomocysteinaemia-associated vascular diseases. Cathepsin V, specifically expressed in humans, is involved in vascular diseases through its elastolytic and collagenolytic activities. The aim of this study was to determine the effects of cathepsin V on l-homocysteine-induced vascular inflammation. EXPERIMENTAL APPROACH A high methionine diet-induced hyperhomocysteinaemic mouse model was used to assess cathepsin V expression and vascular inflammation. Cultures of HUVECs were challenged with l-homocysteine and the cathepsin L/V inhibitor SID to assess the pro-inflammatory effects of cathepsin V. Transfection and antisense techniques were utilized to investigate the effects of cathepsin V on the dual-specificity protein phosphatases (DUSPs) and MAPK pathways. KEY RESULTS Cathepsin L (human cathepsin V homologous) was increased in the thoracic aorta endothelial cells of hyperhomocysteinaemic mice; l-homocysteine promoted cathepsin V expression in HUVECs. SID suppressed the activity of cathepsin V and reversed the up-regulation of inflammatory cytokines (IL-6, IL-8 and TNF-α), adhesion and chemotaxis of leukocytes and vascular inflammation induced by l-homocysteine in vivo and in vitro. Increased cathepsin V promoted the degradation of DUSP6 and DUSP7, phosphorylation and subsequent nuclear translocation of ERK1/2, phosphorylation of STAT1 and expression of IL-6, IL-8 and TNF-α. CONCLUSIONS AND IMPLICATIONS This study has identified a novel mechanism, which shows that l-homocysteine-induced upregulation of cathepsin V mediates vascular endothelial inflammation under high homocysteine condition partly via ERK1/2 /STAT1 pathway. This mechanism could represent a potential therapeutic target in hyperaemia-associated vascular diseases. LINKED ARTICLES This article is part of a themed section on Spotlight on Small Molecules in Cardiovascular Diseases. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v175.8/issuetoc.
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Affiliation(s)
- Yi-Ping Leng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China.,Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Ye-Shuo Ma
- Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China.,Department of Cardiology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Xiao-Gang Li
- Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China.,Department of Cardiology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Rui-Fang Chen
- Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China.,Centre for Experimental Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Ping-Yu Zeng
- Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China.,Centre for Experimental Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Xiao-Hui Li
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China.,Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Cheng-Feng Qiu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China.,Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Ya-Pei Li
- Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China.,Department of Cardiology, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Zhen Zhang
- Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China.,Centre for Experimental Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
| | - Alex F Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, China.,Center for Vascular Disease and Translational Medicine, The Third Xiangya Hospital of Central South University, Changsha, China
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274
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de Almeida AJPO, Ribeiro TP, de Medeiros IA. Aging: Molecular Pathways and Implications on the Cardiovascular System. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7941563. [PMID: 28874954 PMCID: PMC5569936 DOI: 10.1155/2017/7941563] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Accepted: 06/27/2017] [Indexed: 02/06/2023]
Abstract
The world's population over 60 years is growing rapidly, reaching 22% of the global population in the next decades. Despite the increase in global longevity, individual healthspan needs to follow this growth. Several diseases have their prevalence increased by age, such as cardiovascular diseases, the leading cause of morbidity and mortality worldwide. Understanding the aging biology mechanisms is fundamental to the pursuit of cardiovascular health. In this way, aging is characterized by a gradual decline in physiological functions, involving the increased number in senescent cells into the body. Several pathways lead to senescence, including oxidative stress and persistent inflammation, as well as energy failure such as mitochondrial dysfunction and deregulated autophagy, being ROS, AMPK, SIRTs, mTOR, IGF-1, and p53 key regulators of the metabolic control, connecting aging to the pathways which drive towards diseases. In addition, senescence can be induced by cellular replication, which resulted from telomere shortening. Taken together, it is possible to draw a common pathway unifying aging to cardiovascular diseases, and the central point of this process, senescence, can be the target for new therapies, which may result in the healthspan matching the lifespan.
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Affiliation(s)
- Arthur José Pontes Oliveira de Almeida
- Departamento de Ciências Farmacêuticas/Centro de Ciências da Saúde, Universidade Federal da Paraíba, Cidade Universitária-Campus I, Caixa Postal 5009, 58.051-970 João Pessoa, PB, Brazil
| | - Thaís Porto Ribeiro
- Departamento de Ciências Farmacêuticas/Centro de Ciências da Saúde, Universidade Federal da Paraíba, Cidade Universitária-Campus I, Caixa Postal 5009, 58.051-970 João Pessoa, PB, Brazil
| | - Isac Almeida de Medeiros
- Departamento de Ciências Farmacêuticas/Centro de Ciências da Saúde, Universidade Federal da Paraíba, Cidade Universitária-Campus I, Caixa Postal 5009, 58.051-970 João Pessoa, PB, Brazil
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275
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Ghosh A, Gao L, Thakur A, Siu PM, Lai CWK. Role of free fatty acids in endothelial dysfunction. J Biomed Sci 2017; 24:50. [PMID: 28750629 PMCID: PMC5530532 DOI: 10.1186/s12929-017-0357-5] [Citation(s) in RCA: 250] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 07/24/2017] [Indexed: 02/06/2023] Open
Abstract
Plasma free fatty acids levels are increased in subjects with obesity and type 2 diabetes, playing detrimental roles in the pathogenesis of atherosclerosis and cardiovascular diseases. Increasing evidence showing that dysfunction of the vascular endothelium, the inner lining of the blood vessels, is the key player in the pathogenesis of atherosclerosis. In this review, we aimed to summarize the roles and the underlying mechanisms using the evidence collected from clinical and experimental studies about free fatty acid-mediated endothelial dysfunction. Because of the multifaceted roles of plasma free fatty acids in mediating endothelial dysfunction, elevated free fatty acid level is now considered as an important link in the onset of endothelial dysfunction due to metabolic syndromes such as diabetes and obesity. Free fatty acid-mediated endothelial dysfunction involves several mechanisms including impaired insulin signaling and nitric oxide production, oxidative stress, inflammation and the activation of the renin-angiotensin system and apoptosis in the endothelial cells. Therefore, targeting the signaling pathways involved in free fatty acid-induced endothelial dysfunction could serve as a preventive approach to protect against the occurrence of endothelial dysfunction and the subsequent complications such as atherosclerosis.
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Affiliation(s)
- Arijit Ghosh
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, HKSAR, China
- Department of Biomedical Sciences, City University of Hong Kong, HKSAR, China
| | - Lei Gao
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, HKSAR, China
| | - Abhimanyu Thakur
- Department of Biomedical Sciences, City University of Hong Kong, HKSAR, China
| | - Parco M. Siu
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, HKSAR, China
| | - Christopher W. K. Lai
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, HKSAR, China
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276
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Northcott JM, Czubryt MP, Wigle JT. Vascular senescence and ageing: a role for the MEOX proteins in promoting endothelial dysfunction. Can J Physiol Pharmacol 2017; 95:1067-1077. [PMID: 28727928 DOI: 10.1139/cjpp-2017-0149] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In the vascular system, ageing is accompanied by the accrual of senescent cells and is associated with an increased risk of vascular disease. Endothelial cell (EC) dysfunction is a hallmark of vascular disease and is characterized by decreased angiogenic potential, reduced nitric oxide bioavailability, impaired vasodilation, increased production of ROS, and enhanced inflammation. In ECs, the major producer of nitric oxide is the endothelial nitric oxide synthase (eNOS) enzyme that is encoded by the NOS3 gene. NOS3/eNOS function is tightly regulated at both the transcriptional and post-transcriptional levels to maintain normal vascular function. A key transcriptional regulator of eNOS expression is p53, which has been shown to play a central role in mediating cellular senescence and thereby vascular dysfunction. Herein, we show that, in ECs, the MEOX homeodomain transcription factors decrease the expression of genes involved in angiogenesis, repress eNOS expression at the mRNA and protein levels, and increase the expression of p53. These findings support a role for the MEOX proteins in promoting endothelial dysfunction.
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Affiliation(s)
- Josette M Northcott
- a Institute of Cardiovascular Sciences, St. Boniface Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada.,b Department of Biochemistry and Medical Genetics, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Michael P Czubryt
- a Institute of Cardiovascular Sciences, St. Boniface Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada.,c Department of Physiology and Pathophysiology, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Jeffrey T Wigle
- a Institute of Cardiovascular Sciences, St. Boniface Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada.,b Department of Biochemistry and Medical Genetics, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
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277
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Bharath LP, Cho JM, Park SK, Ruan T, Li Y, Mueller R, Bean T, Reese V, Richardson RS, Cai J, Sargsyan A, Pires K, Anandh Babu PV, Boudina S, Graham TE, Symons JD. Endothelial Cell Autophagy Maintains Shear Stress-Induced Nitric Oxide Generation via Glycolysis-Dependent Purinergic Signaling to Endothelial Nitric Oxide Synthase. Arterioscler Thromb Vasc Biol 2017; 37:1646-1656. [PMID: 28684613 DOI: 10.1161/atvbaha.117.309510] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 06/19/2017] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Impaired endothelial cell (EC) autophagy compromises shear stress-induced nitric oxide (NO) generation. We determined the responsible mechanism. APPROACH AND RESULTS On autophagy compromise in bovine aortic ECs exposed to shear stress, a decrease in glucose uptake and EC glycolysis attenuated ATP production. We hypothesized that decreased glycolysis-dependent purinergic signaling via P2Y1 (P2Y purinoceptor 1) receptors, secondary to impaired autophagy in ECs, prevents shear-induced phosphorylation of eNOS (endothelial nitric oxide synthase) at its positive regulatory site S1117 (p-eNOSS1177) and NO generation. Maneuvers that restore glucose transport and glycolysis (eg, overexpression of GLUT1 [glucose transporter 1]) or purinergic signaling (eg, addition of exogenous ADP) rescue shear-induced p-eNOSS1177 and NO production in ECs with impaired autophagy. Conversely, inhibiting glucose transport via GLUT1 small interfering RNA, blocking purinergic signaling via ectonucleotidase-mediated ATP/ADP degradation (eg, apyrase), or inhibiting P2Y1 receptors using pharmacological (eg, MRS2179 [2'-deoxy-N6-methyladenosine 3',5'-bisphosphate tetrasodium salt]) or genetic (eg, P2Y1-receptor small interfering RNA) procedures inhibit shear-induced p-eNOSS1177 and NO generation in ECs with intact autophagy. Supporting a central role for PKCδT505 (protein kinase C delta T505) in relaying the autophagy-dependent purinergic-mediated signal to eNOS, we find that (1) shear stress-induced activating phosphorylation of PKCδT505 is negated by inhibiting autophagy, (2) shear-induced p-eNOSS1177 and NO generation are restored in autophagy-impaired ECs via pharmacological (eg, bryostatin) or genetic (eg, constitutively active PKCδ) activation of PKCδT505, and (3) pharmacological (eg, rottlerin) and genetic (eg, PKCδ small interfering RNA) PKCδ inhibition prevents shear-induced p-eNOSS1177 and NO generation in ECs with intact autophagy. Key nodes of dysregulation in this pathway on autophagy compromise were revealed in human arterial ECs. CONCLUSIONS Targeted reactivation of purinergic signaling and PKCδ has strategic potential to restore compromised NO generation in pathologies associated with suppressed EC autophagy.
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Affiliation(s)
- Leena P Bharath
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Jae Min Cho
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Seul-Ki Park
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Ting Ruan
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Youyou Li
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Robert Mueller
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Tyler Bean
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Van Reese
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Russel S Richardson
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Jinjin Cai
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Ashot Sargsyan
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Karla Pires
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Pon Velayutham Anandh Babu
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Sihem Boudina
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - Timothy E Graham
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.)
| | - J David Symons
- From the Department of Nutrition and Integrative Physiology, College of Health (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., R.S.R., K.P., V.A.B., S.B., T.E.G., J.D.S.) and Molecular Medicine Program (J.C., A.S., S.B., T.E.G., J.D.S.), University of Utah, Salt Lake City; Division of Endocrinology, Metabolism, and Diabetes, University of Utah School of Medicine, Salt Lake City (L.P.B., J.M.C., S.-K.P., T.R., Y.L., R.M., T.B., J.C., A.S., K.P., S.B., T.E.G., J.D.S.); and University of Utah Geriatric Research, Education, and Clinical Center, George E. Whalen VA Medical Center, Salt Lake City (V.R., R.S.R.).
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278
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Zhang Z, Yang C, Dai X, Ao Y, Li Y. Inhibitory effect of trans-caryophyllene (TC) on leukocyte-endothelial attachment. Toxicol Appl Pharmacol 2017. [PMID: 28624443 DOI: 10.1016/j.taap.2017.06.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
trans-Caryophyllene (TC) is a major component found in the essential oils of many spices and foods/medicinal plants. It is a natural sesquiterpene and has been the subject of numerous studies. However, the effects of TC on vascular inflammation remain unknown. In this study, we reported that TC treatment in human umbilical vein endothelial cells (HUVECs) prevented attachment of monocytic leukemia cell line THP-1 cells to endothelial cells. In addition, in vivo results indicate that TC inhibited macrophage infiltration to the aortic surface and reduced total serum levels of cholesterol and triglycerides. Importantly, administration of TC could inhibit the induction of vascular cell adhesion molecule-1 (VCAM-1) both in vitro and in vivo. Notably, our data indicate that the inhibitory effects of TC on the expression of VCAM-1 are mediated by the JAK2/STAT1/IRF-1 pathway. TC is a specific agonist of the type 2 cannabinoid receptor (CB2R). Importantly, we further verified that the inhibitory effects of TC on the expression of IRF-1 and VCAM-1 are dependent on activation of CB2R. Inhibition of CB2R by either specific inhibitors or RNA interference abolished the inhibitory effects of TC on the expression of IRF-1 and VCAM-1. Our results suggest that TC might have a capacity to suppress the development of atherosclerosis.
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Affiliation(s)
- Zhen Zhang
- Department of Pediatric ICU, The First Affiliated Hospital of Jilin University, Changchun 130021, Jilin, China
| | - Chunfeng Yang
- Department of Pediatric ICU, The First Affiliated Hospital of Jilin University, Changchun 130021, Jilin, China
| | - Xinlun Dai
- Clinical Medical College, The First Affiliated Hospital of Jilin University, Changchun 130021, Jilin, China
| | - Yu Ao
- Department of Pediatric ICU, The First Affiliated Hospital of Jilin University, Changchun 130021, Jilin, China
| | - Yumei Li
- Department of Pediatric ICU, The First Affiliated Hospital of Jilin University, Changchun 130021, Jilin, China.
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279
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Thompson HL, Smithey MJ, Surh CD, Nikolich-Žugich J. Functional and Homeostatic Impact of Age-Related Changes in Lymph Node Stroma. Front Immunol 2017; 8:706. [PMID: 28659930 PMCID: PMC5469916 DOI: 10.3389/fimmu.2017.00706] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 05/31/2017] [Indexed: 12/26/2022] Open
Abstract
Adults over 65 years of age are more vulnerable to infectious disease and show poor responses to vaccination relative to those under 50. A complex set of age-related changes in the immune system is believed to be largely responsible for these defects. These changes, collectively termed immune senescence, encompass alterations in both the innate and adaptive immune systems, in the microenvironments where immune cells develop or reside, and in soluble factors that guide immune homeostasis and function. While age-related changes in primary lymphoid organs (bone marrow, and, in particular, the thymus, which involutes in the first third of life) have been long appreciated, changes affecting aging secondary lymphoid organs, and, in particular, aging lymph nodes (LNs) have been less well characterized. Over the last 20 years, LN stromal cells have emerged as key players in maintaining LN morphology and immune homeostasis, as well as in coordinating immune responses to pathogens. Here, we review recent progress in understanding the contributions of LN stromal cells to immune senescence. We discuss approaches to understand the mechanisms behind the decline in LN stromal cells and conclude by considering potential strategies to rejuvenate aging LN stroma to improve immune homeostasis, immune responses, and vaccine efficacy in the elderly.
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Affiliation(s)
- Heather L. Thompson
- Department of Immunobiology, The Arizona Center on Aging, University of Arizona College of Medicine, Tucson, AZ, United States
| | - Megan J. Smithey
- Department of Immunobiology, The Arizona Center on Aging, University of Arizona College of Medicine, Tucson, AZ, United States
| | - Charles D. Surh
- Academy of Immunology and Microbiology, Institute of Basic Science, Pohang, South Korea
- Department of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, South Korea
- Division of Developmental Immunology, La Jolla Institute of Allergy and Immunology, La Jolla, CA, United States
| | - Janko Nikolich-Žugich
- Department of Immunobiology, The Arizona Center on Aging, University of Arizona College of Medicine, Tucson, AZ, United States
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280
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The Antioxidant Machinery of Young and Senescent Human Umbilical Vein Endothelial Cells and Their Microvesicles. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017. [PMID: 28642812 PMCID: PMC5470024 DOI: 10.1155/2017/7094781] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We examine the antioxidant role of young and senescent human umbilical vein endothelial cells (HUVECs) and their microvesicles (MVs). Proteomic and Western blot studies have shown young HUVECs to have a complete and well-developed antioxidant system. Their MVs also contain antioxidant molecules, though of a smaller and more specific range, specialized in the degradation of hydrogen peroxide and the superoxide anion via the thioredoxin-peroxiredoxin system. Senescence was shown to be associated with a large increase in the size of the antioxidant machinery in both HUVECs and their MVs. These responses might help HUVECs and their MVs deal with the more oxidising conditions found in older cells. Functional analysis confirmed the antioxidant machinery of the MVs to be active and to increase in size with senescence. No glutathione or nonpeptide antioxidant (ascorbic acid and vitamin E) activity was detected in the MVs. Endothelial cells and MVs seem to adapt to higher ROS concentrations in senescence by increasing their antioxidant machinery, although this is not enough to recover completely from the senescence-induced ROS increase. Moreover, MVs could be involved in the regulation of the blood plasma redox status by functioning as ROS scavengers.
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281
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Li T, Chen Y, Gua C, Li X. Elevated Circulating Trimethylamine N-Oxide Levels Contribute to Endothelial Dysfunction in Aged Rats through Vascular Inflammation and Oxidative Stress. Front Physiol 2017; 8:350. [PMID: 28611682 PMCID: PMC5447752 DOI: 10.3389/fphys.2017.00350] [Citation(s) in RCA: 136] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Accepted: 05/12/2017] [Indexed: 12/25/2022] Open
Abstract
Vascular endothelial dysfunction, a characteristic of the aging process, is an important risk factor for cardiovascular disease in aging. Although, vascular inflammation and oxidative stress are major contributors to endothelial dysfunction in aging, the underlying mechanisms during the aging process are not fully understood. Accumulating evidence reveals that gut microbiota-dependent metabolite trimethylamine-N-oxide (TMAO) is implicated in the pathogenesis of many cardiovascular diseases. We tested the hypothesis that aging increases circulating TMAO levels, which induce vascular inflammation and oxidative stress, resulting in age-associated endothelial dysfunction. Old (22-mo-old) and young (4-mo-old) Fischer-344 rats were treated without (control) or with 1.0% 3,3-Dimethyl-1-butanol (DMB, an inhibitor of trimethylamine formation) in drinking water for 8 weeks. Compared with young control group, old control group had markedly higher plasma TMAO levels, which were reduced by DMB treatment. Endothelium-dependent relaxation of aorta in response to acetylcholine was impaired in old control group compared with young control group as indicated by decreased maximal relaxation (Emax) and reduced area under the curve (AUC). Emax and AUC were both normalized in old rats treated with DMB. No difference in endothelial-independent relaxation in response to sodium nitroprusside was observed among groups. Molecular studies revealed that old control group exhibits increased expression of proinflammatory cytokines and superoxide production, and decreased expression of endothelial nitric-oxide synthase (eNOS) in the aorta, all of which were restored by DMB treatment. These results suggest that aging increases circulating TMAO levels, which may impair eNOS-derived NO bioavailability by increasing vascular inflammation and oxidative stress, contributing to aging-associated endothelial dysfunction.
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Affiliation(s)
- Tiejun Li
- Department of Cardiology, Shengjing Hospital of China Medical UniversityShenyang, China
| | - Yanli Chen
- Department of Cardiology, Shengjing Hospital of China Medical UniversityShenyang, China
| | - Chaojun Gua
- Department of Cardiology, Shengjing Hospital of China Medical UniversityShenyang, China
| | - Xiaodong Li
- Department of Cardiology, Shengjing Hospital of China Medical UniversityShenyang, China
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282
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Maessen MFH, van Mil ACCM, Straathof Y, Riksen NP, Rongen GAPJM, Hopman MTE, Eijsvogels TMH, Thijssen DHJ. Impact of lifelong exercise training on endothelial ischemia-reperfusion and ischemic preconditioning in humans. Am J Physiol Regul Integr Comp Physiol 2017; 312:R828-R834. [DOI: 10.1152/ajpregu.00466.2016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 03/10/2017] [Accepted: 03/10/2017] [Indexed: 12/26/2022]
Abstract
Reperfusion is essential for ischemic tissue survival, but causes additional damage to the endothelium [i.e., ischemia-reperfusion (I/R) injury]. Ischemic preconditioning (IPC) refers to short repetitive episodes of ischemia that can protect against I/R. However, IPC efficacy attenuates with older age. Whether physical inactivity contributes to the attenuated efficacy of IPC to protect against I/R injury in older humans is unclear. We tested the hypotheses that lifelong exercise training relates to 1) attenuated endothelial I/R and 2) maintained IPC efficacy that protects veteran athletes against endothelial I/R. In 18 sedentary male individuals (SED, <1 exercise h/wk for >20 yr, 63 ± 7 yr) and 20 veteran male athletes (ATH, >5 exercise h/wk for >20 yr, 63 ± 6 yr), we measured brachial artery endothelial function with flow-mediated dilation (FMD) before and after I/R. We induced I/R by 20 min of ischemia followed by 20 min of reperfusion. Randomized over 2 days, participants underwent either 35-min rest or IPC (3 cycles of 5-min cuff inflation to 220 mmHg with 5 min of rest) before I/R. In SED, FMD decreased after I/R [median (interquartile range)]: [3.0% (2.0–4.7) to 2.1% (1.5–3.9), P = 0.046] and IPC did not prevent this decline [4.1% (2.6–5.2) to 2.8% (2.2–3.6), P = 0.012]. In ATH, FMD was preserved after I/R [3.0% (1.7–5.4) to 3.0% (1.9–4.1), P = 0.82] and when IPC preceded I/R [3.2% (1.9–4.2) to 2.8% (1.4–4.6), P = 0.18]. These findings indicate that lifelong exercise training is associated with increased tolerance against endothelial I/R. These protective, preconditioning effects of lifelong exercise against endothelial I/R may contribute to the cardioprotective effects of exercise training.
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Affiliation(s)
- Martijn F. H. Maessen
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Anke C. C. M. van Mil
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
- Research Institute for Sports and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Yaïra Straathof
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Niels P. Riksen
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands; and
| | - Gerard A. P. J. M. Rongen
- Department of Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands; and
- Department of Pharmacology and Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Maria T. E. Hopman
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Thijs M. H. Eijsvogels
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
- Research Institute for Sports and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Dick H. J. Thijssen
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
- Research Institute for Sports and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
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283
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Tesauro M, Mauriello A, Rovella V, Annicchiarico-Petruzzelli M, Cardillo C, Melino G, Di Daniele N. Arterial ageing: from endothelial dysfunction to vascular calcification. J Intern Med 2017; 281:471-482. [PMID: 28345303 DOI: 10.1111/joim.12605] [Citation(s) in RCA: 204] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Complex structural and functional changes occur in the arterial system with advancing age. The aged artery is characterized by changes in microRNA expression patterns, autophagy, smooth muscle cell migration and proliferation, and arterial calcification with progressively increased mechanical vessel rigidity and stiffness. With age the vascular smooth muscle cells modify their phenotype from contractile to 'synthetic' determining the development of intimal thickening as early as the second decade of life as an adaptive response to forces acting on the arterial wall. The increased permeability observed in intimal thickening could represent the substrate on which low-level atherosclerotic stimuli can promote the development of advanced atherosclerotic lesions. In elderly patients the atherosclerotic plaques tend to be larger with increased vascular stenosis. In these plaques there is a progressive accumulation of both lipids and collagen and a decrease of inflammation. Similarly the plaques from elderly patients show more calcification as compared with those from younger patients. The coronary artery calcium score is a well-established marker of adverse cardiovascular outcomes. The presence of diffuse calcification in a severely stenotic segment probably induces changes in mechanical properties and shear stress of the arterial wall favouring the rupture of a vulnerable lesion in a less stenotic adjacent segment. Oxidative stress and inflammation appear to be the two primary pathological mechanisms of ageing-related endothelial dysfunction even in the absence of clinical disease. Arterial ageing is no longer considered an inexorable process. Only a better understanding of the link between ageing and vascular dysfunction can lead to significant advances in both preventative and therapeutic treatments with the aim that in the future vascular ageing may be halted or even reversed.
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Affiliation(s)
- M Tesauro
- Department of Systems Medicine, University of Rome 'Tor Vergata', Rome, Italy
| | - A Mauriello
- Department of Experimental Medicine and Surgery, University of Rome 'Tor Vergata', Rome, Italy
| | - V Rovella
- Department of Systems Medicine, University of Rome 'Tor Vergata', Rome, Italy
| | | | - C Cardillo
- Department of Internal Medicine, Catholic University, Rome, Italy
| | - G Melino
- Department of Experimental Medicine and Surgery, University of Rome 'Tor Vergata', Rome, Italy.,Medical Research Council, Toxicology Unit, Leicester University, Leicester, UK
| | - N Di Daniele
- Department of Systems Medicine, University of Rome 'Tor Vergata', Rome, Italy
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284
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Willcox BJ, Morris BJ, Tranah GJ, Chen R, Masaki KH, He Q, Willcox DC, Allsopp RC, Moisyadi S, Gerschenson M, Davy PMC, Poon LW, Rodriguez B, Newman AB, Harris TB, Cummings SR, Liu Y, Parimi N, Evans DS, Donlon TA. Longevity-Associated FOXO3 Genotype and its Impact on Coronary Artery Disease Mortality in Japanese, Whites, and Blacks: A Prospective Study of Three American Populations. J Gerontol A Biol Sci Med Sci 2017; 72:724-728. [PMID: 27694344 PMCID: PMC5964743 DOI: 10.1093/gerona/glw196] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 09/13/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND We recently reported that protection against coronary artery disease (CAD) mortality is the major contributor to longer life associated with FOXO3 genotype. The present study examined this relation in more detail. METHODS We performed a 15-year observational study of 3,584 older American men of Japanese ancestry from the Kuakini Honolulu Heart Program cohort and 1,595 White and 1,067 Black elderly individuals from the Health Aging and Body Composition study. RESULTS Multivariate Cox regression models demonstrated that carriage of the longevity-associated G allele of FOXO3 single nucleotide polymorphisms rs2802292 was a protective factor against CAD mortality in all three populations. In Japanese and Whites, but not in Blacks, the protective effect of the G allele was little changed in models adjusted for other major risk factors. Population-attributable risk (PAR) models found that the nonprotective TT genotype contributed 15%, 9%, and 3% to CAD mortality risk in Japanese, White, and Black Americans, respectively, and was one of the top three contributing factors to CAD mortality. In Japanese, this effect size was comparable with hypertension (15%), but in Whites and Blacks PAR for hypertension was higher (29% and 26%, respectively). G-allele carriers had lower plasma TNF-α than noncarriers, suggesting inflammation as a potential mediating factor for CAD mortality risk. CONCLUSION FOXO3 genotype is an important risk factor for CAD mortality in older populations. More research is needed to identify potential mechanisms and targets for intervention.
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Affiliation(s)
- Bradley J Willcox
- Department of Research, Kuakini Medical Center, Honolulu, Hawaii
- Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu
| | - Brian J Morris
- Department of Research, Kuakini Medical Center, Honolulu, Hawaii
- Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu
- School of Medical Sciences and Bosch Institute, University of Sydney, New South Wales, Australia
| | - Gregory J Tranah
- California Pacific Medical Center Research Institute, San Francisco
| | - Randi Chen
- Department of Research, Kuakini Medical Center, Honolulu, Hawaii
| | - Kamal H Masaki
- Department of Research, Kuakini Medical Center, Honolulu, Hawaii
- Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu
| | - Qimei He
- Department of Research, Kuakini Medical Center, Honolulu, Hawaii
| | - D Craig Willcox
- Department of Research, Kuakini Medical Center, Honolulu, Hawaii
- Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu
- Department of Human Welfare, Okinawa International University, Ginowan, Japan
| | | | - Stefan Moisyadi
- Institute for Biogenesis Research, University of Hawaii, Honolulu
| | - Mariana Gerschenson
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu
| | - Philip M C Davy
- Institute for Biogenesis Research, University of Hawaii, Honolulu
| | | | - Beatriz Rodriguez
- Department of Research, Kuakini Medical Center, Honolulu, Hawaii
- Department of Geriatric Medicine, John A. Burns School of Medicine, University of Hawaii, Honolulu
| | - Anne B Newman
- Department of Epidemiology, University of Pittsburgh, Pennsylvania
| | - Tamara B Harris
- Laboratory of Neurogenetics, Intramural Research Program, National Institute on Aging, Bethesda, Maryland
| | | | - Yongmei Liu
- Division of Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Neeta Parimi
- California Pacific Medical Center Research Institute, San Francisco
| | - Daniel S Evans
- California Pacific Medical Center Research Institute, San Francisco
| | - Timothy A Donlon
- Department of Research, Kuakini Medical Center, Honolulu, Hawaii
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, University of Hawaii, Honolulu
- Department of Pathology, John A. Burns School of Medicine, University of Hawaii, Honolulu, Hawaii
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285
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Lesnefsky EJ, Chen Q, Hoppel CL. Mitochondrial Metabolism in Aging Heart. Circ Res 2017; 118:1593-611. [PMID: 27174952 DOI: 10.1161/circresaha.116.307505] [Citation(s) in RCA: 216] [Impact Index Per Article: 30.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 04/05/2016] [Indexed: 02/07/2023]
Abstract
Altered mitochondrial metabolism is the underlying basis for the increased sensitivity in the aged heart to stress. The aged heart exhibits impaired metabolic flexibility, with a decreased capacity to oxidize fatty acids and enhanced dependence on glucose metabolism. Aging impairs mitochondrial oxidative phosphorylation, with a greater role played by the mitochondria located between the myofibrils, the interfibrillar mitochondria. With aging, there is a decrease in activity of complexes III and IV, which account for the decrease in respiration. Furthermore, aging decreases mitochondrial content among the myofibrils. The end result is that in the interfibrillar area, there is ≈50% decrease in mitochondrial function, affecting all substrates. The defective mitochondria persist in the aged heart, leading to enhanced oxidant production and oxidative injury and the activation of oxidant signaling for cell death. Aging defects in mitochondria represent new therapeutic targets, whether by manipulation of the mitochondrial proteome, modulation of electron transport, activation of biogenesis or mitophagy, or the regulation of mitochondrial fission and fusion. These mechanisms provide new ways to attenuate cardiac disease in elders by preemptive treatment of age-related defects, in contrast to the treatment of disease-induced dysfunction.
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Affiliation(s)
- Edward J Lesnefsky
- From the Division of Cardiology, Department of Medicine, Pauley Heart Center (E.J.L, Q.C.), Departments of Biochemistry and Molecular Biology and Physiology and Biophsyics (E.J.L.), Virginia Commonwealth University, Richmond, VA (E.J.L., Q.C.); Medical Service, McGuire Veterans Affairs Medical Center, Richmond, VA (E.J.L.); and Departments of Pharmacology (C.L.H.) and Medicine (E.J.L., C.L.H.), Center for Mitochondrial Disease (C.L.H.), Case Western Reserve University, School of Medicine, Cleveland, OH
| | - Qun Chen
- From the Division of Cardiology, Department of Medicine, Pauley Heart Center (E.J.L, Q.C.), Departments of Biochemistry and Molecular Biology and Physiology and Biophsyics (E.J.L.), Virginia Commonwealth University, Richmond, VA (E.J.L., Q.C.); Medical Service, McGuire Veterans Affairs Medical Center, Richmond, VA (E.J.L.); and Departments of Pharmacology (C.L.H.) and Medicine (E.J.L., C.L.H.), Center for Mitochondrial Disease (C.L.H.), Case Western Reserve University, School of Medicine, Cleveland, OH
| | - Charles L Hoppel
- From the Division of Cardiology, Department of Medicine, Pauley Heart Center (E.J.L, Q.C.), Departments of Biochemistry and Molecular Biology and Physiology and Biophsyics (E.J.L.), Virginia Commonwealth University, Richmond, VA (E.J.L., Q.C.); Medical Service, McGuire Veterans Affairs Medical Center, Richmond, VA (E.J.L.); and Departments of Pharmacology (C.L.H.) and Medicine (E.J.L., C.L.H.), Center for Mitochondrial Disease (C.L.H.), Case Western Reserve University, School of Medicine, Cleveland, OH.
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286
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Hu X, Bai T, Xu Z, Liu Q, Zheng Y, Cai L. Pathophysiological Fundamentals of Diabetic Cardiomyopathy. Compr Physiol 2017; 7:693-711. [PMID: 28333387 DOI: 10.1002/cphy.c160021] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Diabetic cardiomyopathy (DCM) was first recognized more than four decades ago and occurred independent of cardiovascular diseases or hypertension in both type 1 and type 2 diabetic patients. The exact mechanisms underlying this disease remain incompletely understood. Several pathophysiological bases responsible for DCM have been proposed, including the presence of hyperglycemia, nonenzymatic glycosylation of large molecules (e.g., proteins), energy metabolic disturbance, mitochondrial damage and dysfunction, impaired calcium handling, reactive oxygen species formation, inflammation, cardiac cell death, and cardiac hypertrophy and fibrosis, leading to impairment of cardiac contractile functions. Increasing evidence also indicates the phenomenon called "metabolic memory" for diabetes-induced cardiovascular complications, for which epigenetic modulation seemed to play an important role, suggesting that the aforementioned pathogenic bases may be regulated by epigenetic modification. Therefore, this review aims at briefly summarizing the current understanding of the pathophysiological bases for DCM. Although how epigenetic mechanisms play a role remains incompletely understood now, extensive clinical and experimental studies have implicated its importance in regulating the cardiac responses to diabetes, which are believed to shed insight into understanding of the pathophysiological and epigenetic mechanisms for the development of DCM and its possible prevention and/or therapy. © 2017 American Physiological Society. Compr Physiol 7:693-711, 2017.
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Affiliation(s)
- Xinyue Hu
- Center of Cardiovascular Diseases, the First Hospital of Jilin University, Changchun, China.,Pediatric Research Institute at the Department of Pediatrics of the University of Louisville, Louisville, Kentucky, USA
| | - Tao Bai
- Center of Cardiovascular Diseases, the First Hospital of Jilin University, Changchun, China.,Pediatric Research Institute at the Department of Pediatrics of the University of Louisville, Louisville, Kentucky, USA
| | - Zheng Xu
- Center of Cardiovascular Diseases, the First Hospital of Jilin University, Changchun, China.,Pediatric Research Institute at the Department of Pediatrics of the University of Louisville, Louisville, Kentucky, USA
| | - Qiuju Liu
- Department of Hematological Disorders the First Hospital of Jilin University, Changchun, China
| | - Yang Zheng
- Center of Cardiovascular Diseases, the First Hospital of Jilin University, Changchun, China
| | - Lu Cai
- Pediatric Research Institute at the Department of Pediatrics of the University of Louisville, Louisville, Kentucky, USA.,Wendy Novak Diabetes Care Center, University of Louisville, Louisville, Kentucky, USA
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287
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Battson ML, Lee DM, Gentile CL. Endoplasmic reticulum stress and the development of endothelial dysfunction. Am J Physiol Heart Circ Physiol 2017; 312:H355-H367. [DOI: 10.1152/ajpheart.00437.2016] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 11/28/2016] [Accepted: 11/28/2016] [Indexed: 12/14/2022]
Abstract
The vascular endothelium plays a critical role in cardiovascular homeostasis, and thus identifying the underlying causes of endothelial dysfunction has important clinical implications. In this regard, the endoplasmic reticulum (ER) has recently emerged as an important regulator of metabolic processes. Dysfunction within the ER, broadly termed ER stress, evokes the unfolded protein response (UPR), an adaptive pathway that aims to restore ER homeostasis. Although the UPR is the first line of defense against ER stress, chronic activation of the UPR leads to cell dysfunction and death and has recently been implicated in the pathogenesis of endothelial dysfunction. Numerous risk factors for endothelial dysfunction can induce ER stress, which may in turn disrupt endothelial function via direct effects on endothelium-derived vasoactive substances or by activating other pathogenic cellular networks such as inflammation and oxidative stress. This review summarizes the available data linking ER stress to endothelial dysfunction.
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Affiliation(s)
- M. L. Battson
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, Colorado
| | - D. M. Lee
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, Colorado
| | - C. L. Gentile
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, Colorado
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288
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Yin Y, Zhou Z, Liu W, Chang Q, Sun G, Dai Y. Vascular endothelial cells senescence is associated with NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome activation via reactive oxygen species (ROS)/thioredoxin-interacting protein (TXNIP) pathway. Int J Biochem Cell Biol 2017; 84:22-34. [PMID: 28064010 DOI: 10.1016/j.biocel.2017.01.001] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 12/12/2016] [Accepted: 01/03/2017] [Indexed: 12/15/2022]
Abstract
Endothelial dysfunction caused by endothelial cells senescence and chronic inflammation is tightly linked to the development of cardiovascular diseases. NLRP3 (NOD-like receptor family pyrin domain-containing3) inflammasome plays a central role in inflammatory response that is associated with diverse inflammatory diseases. This study explores the effects and possible mechanisms of NLRP3 inflammasome in endothelial cells senescence. Results show an increment of pro-inflammatory cytokine interleukin (IL) -1β secretion and caspase-1 activation during the senescence of endothelial cells induced by bleomycin. Moreover, secreted IL-1β promoted endothelial cells senescence through up-regulation of p53/p21 protein expression. NLRP3 inflammasome was found to mediate IL-1β secretion through the production of ROS (reactive oxygen species) during the senescence of endothelial cells. Furthermore, the association of TXNIP (thioredoxin-interacting protein) with NLRP3 induced by ROS promoted NLRP3 inflammasome activation in senescent endothelial cells. In addition, the expressions of NLRP3 inflammasome related genes, ASC (apoptosis associated speck-like protein containing a CARD), TXNIP, cleaved caspase-1 and IL-1β, were also increased in vitro and in vivo studies. These findings indicate that endothelial senescence could be mediated through ROS and NLRP3 inflammasome signaling pathways, suggesting a potential target for the prevention of endothelial senescence-related cardiovascular diseases.
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Affiliation(s)
- Yanlin Yin
- Department of Cardiology, Shanghai East Hospital, and Immunology Department, Tongji University School of Medicine, Shanghai, China
| | - Zhihui Zhou
- Department of Cardiology, Shanghai East Hospital, and Immunology Department, Tongji University School of Medicine, Shanghai, China
| | - Weiwei Liu
- Department of Cardiology, Shanghai East Hospital, and Immunology Department, Tongji University School of Medicine, Shanghai, China
| | - Qun Chang
- Department of Cardiology, Shanghai East Hospital, and Immunology Department, Tongji University School of Medicine, Shanghai, China
| | - Guanqun Sun
- Department of Cardiology, Shanghai East Hospital, and Immunology Department, Tongji University School of Medicine, Shanghai, China
| | - Yalei Dai
- Department of Cardiology, Shanghai East Hospital, and Immunology Department, Tongji University School of Medicine, Shanghai, China.
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289
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Santos-Parker JR, Strahler TR, Bassett CJ, Bispham NZ, Chonchol MB, Seals DR. Curcumin supplementation improves vascular endothelial function in healthy middle-aged and older adults by increasing nitric oxide bioavailability and reducing oxidative stress. Aging (Albany NY) 2017; 9:187-208. [PMID: 28070018 PMCID: PMC5310664 DOI: 10.18632/aging.101149] [Citation(s) in RCA: 132] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 12/20/2016] [Indexed: 05/15/2023]
Abstract
We hypothesized that curcumin would improve resistance and conduit artery endothelial function and large elastic artery stiffness in healthy middle-aged and older adults. Thirty-nine healthy men and postmenopausal women (45-74 yrs) were randomized to 12 weeks of curcumin (2000 mg/day Longvida®; n=20) or placebo (n=19) supplementation. Forearm blood flow response to acetylcholine infusions (FBFACh; resistance artery endothelial function) increased 37% following curcumin supplementation (107±13 vs. 84±11 AUC at baseline, P=0.03), but not placebo (P=0.2). Curcumin treatment augmented the acute reduction in FBFACh induced by the nitric oxide synthase inhibitor NG monomethyl-L-arginine (L-NMMA; P=0.03), and reduced the acute increase in FBFACh to the antioxidant vitamin C (P=0.02), whereas placebo had no effect (both P>0.6). Similarly, brachial artery flow-mediated dilation (conduit artery endothelial function) increased 36% in the curcumin group (5.7±0.4 vs. 4.4±0.4% at baseline, P=0.001), with no change in placebo (P=0.1). Neither curcumin nor placebo influenced large elastic artery stiffness (aortic pulse wave velocity or carotid artery compliance) or circulating biomarkers of oxidative stress and inflammation (all P>0.1). In healthy middle-aged and older adults, 12 weeks of curcumin supplementation improves resistance artery endothelial function by increasing vascular nitric oxide bioavailability and reducing oxidative stress, while also improving conduit artery endothelial function.
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Affiliation(s)
| | - Talia R. Strahler
- Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Candace J. Bassett
- Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Nina Z. Bispham
- Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA
| | - Michel B. Chonchol
- Renal Diseases and Hypertension, University of Colorado Denver, Aurora, CO 80045, USA
| | - Douglas R. Seals
- Integrative Physiology, University of Colorado Boulder, Boulder, CO 80309, USA
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290
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Khan SY, Awad EM, Oszwald A, Mayr M, Yin X, Waltenberger B, Stuppner H, Lipovac M, Uhrin P, Breuss JM. Premature senescence of endothelial cells upon chronic exposure to TNFα can be prevented by N-acetyl cysteine and plumericin. Sci Rep 2017; 7:39501. [PMID: 28045034 PMCID: PMC5206708 DOI: 10.1038/srep39501] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 11/23/2016] [Indexed: 12/16/2022] Open
Abstract
Cellular senescence is characterized by a permanent cell-cycle arrest and a pro-inflammatory secretory phenotype, and can be induced by a variety of stimuli, including ionizing radiation, oxidative stress, and inflammation. In endothelial cells, this phenomenon might contribute to vascular disease. Plasma levels of the inflammatory cytokine tumor necrosis factor alpha (TNFα) are increased in age-related and chronic conditions such as atherosclerosis, rheumatoid arthritis, psoriasis, and Crohn's disease. Although TNFα is a known activator of the central inflammatory mediator NF-κB, and can induce the intracellular generation of reactive oxygen species (ROS), the question whether TNFα can induce senescence has not been answered conclusively. Here, we investigated the effect of prolonged TNFα exposure on the fate of endothelial cells and found that such treatment induced premature senescence. Induction of endothelial senescence was prevented by the anti-oxidant N-acetyl cysteine, as well as by plumericin and PHA-408, inhibitors of the NF-κB pathway. Our results indicated that prolonged TNFα exposure could have detrimental consequences to endothelial cells by causing senescence and, therefore, chronically increased TNFα levels might possibly contribute to the pathology of chronic inflammatory diseases by driving premature endothelial senescence.
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Affiliation(s)
- Shafaat Y. Khan
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
- Department of Zoology, University of Sargodha, 40100 Sargodha Pakistan
| | - Ezzat M. Awad
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Andre Oszwald
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Manuel Mayr
- King’s British Heart Foundation Centre, King’s College London, London SE5 9NU, UK
| | - Xiaoke Yin
- King’s British Heart Foundation Centre, King’s College London, London SE5 9NU, UK
| | - Birgit Waltenberger
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria
| | - Hermann Stuppner
- Institute of Pharmacy/Pharmacognosy and Center for Molecular Biosciences Innsbruck (CMBI), University of Innsbruck, 6020 Innsbruck, Austria
| | - Markus Lipovac
- Karl Landsteiner Institute for Cell-based Therapy in Gynecology, 2100 Korneuburg, Austria
| | - Pavel Uhrin
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
| | - Johannes M. Breuss
- Department of Vascular Biology and Thrombosis Research, Center for Physiology and Pharmacology, Medical University of Vienna, 1090 Vienna, Austria
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291
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Altara R, Giordano M, Nordén ES, Cataliotti A, Kurdi M, Bajestani SN, Booz GW. Targeting Obesity and Diabetes to Treat Heart Failure with Preserved Ejection Fraction. Front Endocrinol (Lausanne) 2017; 8:160. [PMID: 28769873 PMCID: PMC5512012 DOI: 10.3389/fendo.2017.00160] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 06/23/2017] [Indexed: 12/12/2022] Open
Abstract
Heart failure with preserved ejection fraction (HFpEF) is a major unmet medical need that is characterized by the presence of multiple cardiovascular and non-cardiovascular comorbidities. Foremost among these comorbidities are obesity and diabetes, which are not only risk factors for the development of HFpEF, but worsen symptoms and outcome. Coronary microvascular inflammation with endothelial dysfunction is a common denominator among HFpEF, obesity, and diabetes that likely explains at least in part the etiology of HFpEF and its synergistic relationship with obesity and diabetes. Thus, pharmacological strategies to supplement nitric oxide and subsequent cyclic guanosine monophosphate (cGMP)-protein kinase G (PKG) signaling may have therapeutic promise. Other potential approaches include exercise and lifestyle modifications, as well as targeting endothelial cell mineralocorticoid receptors, non-coding RNAs, sodium glucose transporter 2 inhibitors, and enhancers of natriuretic peptide protective NO-independent cGMP-initiated and alternative signaling, such as LCZ696 and phosphodiesterase-9 inhibitors. Additionally, understanding the role of adipokines in HFpEF may lead to new treatments. Identifying novel drug targets based on the shared underlying microvascular disease process may improve the quality of life and lifespan of those afflicted with both HFpEF and obesity or diabetes, or even prevent its occurrence.
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Affiliation(s)
- Raffaele Altara
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
- KG Jebsen Center for Cardiac Research, Oslo, Norway
- Department of Pathology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, United States
- *Correspondence: Raffaele Altara,
| | - Mauro Giordano
- Department of Medical, Surgical, Neurological, Metabolic and Geriatrics Sciences, University of Campania “L. Vanvitelli”, Caserta, Italy
| | - Einar S. Nordén
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
- KG Jebsen Center for Cardiac Research, Oslo, Norway
- Bjørknes College, Oslo, Norway
| | - Alessandro Cataliotti
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
- KG Jebsen Center for Cardiac Research, Oslo, Norway
| | - Mazen Kurdi
- Faculty of Sciences, Department of Chemistry and Biochemistry, Lebanese University, Hadath, Lebanon
| | - Saeed N. Bajestani
- Department of Pathology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, United States
- Department of Ophthalmology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, United States
| | - George W. Booz
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, United States
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292
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Hsieh PN, Sweet DR, Fan L, Jain MK. Aging and the Krüppel-like factors. TRENDS IN CELL & MOLECULAR BIOLOGY 2017; 12:1-15. [PMID: 29416266 PMCID: PMC5798252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The mammalian Krüppel-like factors (KLFs) are a family of zinc-finger containing transcription factors with diverse patterns of expression and a wide array of cellular functions. While their roles in mammalian physiology are well known, there is a growing appreciation for their roles in modulating the fundamental progression of aging. Here we review the current knowledge of Krüppel-like factors with a focus on their roles in processes regulating aging and age-associated diseases.
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Affiliation(s)
- Paishiun N. Hsieh
- Case Cardiovascular Research Institute, Case Western Reserve University, and Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - David R. Sweet
- Case Cardiovascular Research Institute, Case Western Reserve University, and Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Liyan Fan
- Case Cardiovascular Research Institute, Case Western Reserve University, and Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
- Department of Pathology, Case Western Reserve University, Cleveland, OH, USA
| | - Mukesh K. Jain
- Case Cardiovascular Research Institute, Case Western Reserve University, and Harrington Heart and Vascular Institute, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
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293
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Alund AW, Mercer KE, Pulliam CF, Suva LJ, Chen JR, Badger TM, Ronis MJJ. Partial Protection by Dietary Antioxidants Against Ethanol-Induced Osteopenia and Changes in Bone Morphology in Female Mice. Alcohol Clin Exp Res 2016; 41:46-56. [PMID: 27987315 DOI: 10.1111/acer.13284] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 11/02/2016] [Indexed: 12/16/2022]
Abstract
BACKGROUND Chronic alcohol consumption leads to increased fracture risk and an elevated risk of osteoporosis by decreasing bone accrual through increasing osteoclast activity and decreasing osteoblast activity. We have shown that this mechanism involves the generation of reactive oxygen species (ROS) produced by NADPH oxidases. It was hypothesized that different dietary antioxidants, N-acetyl cysteine (NAC; 1.2 mg/kg/d), and α-tocopherol (Vit.E; 60 mg/kg/d) would be able to attenuate the NADPH oxidase-mediated ROS effects on bone due to chronic alcohol intake. METHODS To study the effects of these antioxidants, female mice received a Lieber-DeCarli liquid diet containing ethanol (EtOH) with or without additional antioxidant for 8 weeks. RESULTS Tibias displayed decreased cortical bone mineral density in both the EtOH and EtOH + antioxidant groups compared to pair-fed (PF) and PF + antioxidant groups (p < 0.05). However, there was significant protection from trabecular bone loss in mice fed either antioxidant (p < 0.05). Microcomputed tomography analysis demonstrated a significant decrease in bone volume (bone volume/tissue volume) and trabecular number (p < 0.05), along with a significant increase in trabecular separation in the EtOH compared to PF (p < 0.05). In contrast, the EtOH + NAC and EtOH + Vit.E did not statistically differ from their respective PF controls. Ex vivo histologic sections of tibias were stained for nitrotyrosine, an indicator of intracellular damage by ROS, and tibias from mice fed EtOH exhibited significantly more staining than PF controls. EtOH treatment significantly increased the number of marrow adipocytes per mm as well as mRNA expression of aP2, an adipocyte marker in bone. Only NAC was able to reduce the number of marrow adipocytes to PF levels. EtOH-fed mice exhibited reduced bone length (p < 0.05) and had a reduced number of proliferating chondrocytes within the growth plate. NAC and Vit.E prevented this (p < 0.05). CONCLUSIONS These data show that alcohol's pathological effects on bone extend beyond decreasing bone mass and suggest a partial protective effect of the dietary antioxidants NAC and Vit.E at these doses with regard to alcohol effects on bone turnover and bone morphology.
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Affiliation(s)
- Alexander W Alund
- Arkansas Children's Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, Arkansas.,Interdisciplinary Biomedical Sciences, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Kelly E Mercer
- Arkansas Children's Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, Arkansas.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Casey F Pulliam
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center New Orleans, New Orleans, Louisiana
| | - Larry J Suva
- Department of Orthopedic Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Jin-Ran Chen
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Thomas M Badger
- Arkansas Children's Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, Arkansas.,Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Martin J J Ronis
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center New Orleans, New Orleans, Louisiana
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294
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Martens CR, Seals DR. Practical alternatives to chronic caloric restriction for optimizing vascular function with ageing. J Physiol 2016; 594:7177-7195. [PMID: 27641062 DOI: 10.1113/jp272348] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 09/09/2016] [Indexed: 12/26/2022] Open
Abstract
Calorie restriction (CR) in the absence of malnutrition exerts a multitude of physiological benefits with ageing in model organisms and in humans including improvements in vascular function. Despite the well-known benefits of chronic CR, long-term energy restriction is not likely to be a feasible healthy lifestyle strategy in humans due to poor sustained adherence, and presents additional concerns if applied to normal weight older adults. This review summarizes what is known about the effects of CR on vascular function with ageing including the underlying molecular 'energy- and nutrient-sensing' mechanisms, and discusses the limited but encouraging evidence for alternative pharmacological and lifestyle interventions that may improve vascular function with ageing by mimicking the beneficial effects of long-term CR.
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Affiliation(s)
- Christopher R Martens
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, USA
| | - Douglas R Seals
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, USA
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295
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Bukiya AN, Seleverstov O, Bisen S, Dopico AM. Age-Dependent Susceptibility to Alcohol-Induced Cerebral Artery Constriction. JOURNAL OF DRUG AND ALCOHOL RESEARCH 2016; 5:236002. [PMID: 29391966 PMCID: PMC5790172 DOI: 10.4303/jdar/236002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Age has been recognized as an important contributor into susceptibility to alcohol-driven pathology. PURPOSE We aimed at determining whether alcohol-induced constriction of cerebral arteries was age-dependent. STUDY DESIGN We used rat middle cerebral artery (MCA) in vitro diameter monitoring, patch-clamping and fluorescence labeling of myocytes to study an age-dependent increase in the susceptibility to alcohol in 3 (50 g), 8 (250 g), and 15 (440 g) weeks-old rats. RESULTS An age-dependent increase in alcohol-induced constriction of MCA could be observed in absence of endothelium, which is paralleled by an age-dependent increase in both protein level of the calcium-/voltage-gated potassium channel of large conductance (BK) accessory β1 subunit and basal BK channel activity. Ethanol-induced BK channel inhibition is increased with age. CONCLUSIONS We demonstrate an increased susceptibility of MCA to ethanol-induced constriction in a period equivalent to adolescence and early adulthood when compared to pre-adolescence. Our work suggests that BK β1 constitutes a significant contributor to age-dependent changes in the susceptibility of cerebral arteries to ethanol.
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Affiliation(s)
- Anna N Bukiya
- Department of Pharmacology, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38103, USA
| | - Olga Seleverstov
- Department of Pharmacology, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38103, USA
| | - Shivantika Bisen
- Department of Pharmacology, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38103, USA
| | - Alex M Dopico
- Department of Pharmacology, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN 38103, USA
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296
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Basello K, Pacifici F, Capuani B, Pastore D, Lombardo MF, Ferrelli F, Coppola A, Donadel G, Arriga R, Sconocchia G, Bellia A, Rogliani P, Federici M, Sbraccia P, Lauro D, Della-Morte D. Serum- and Glucocorticoid-Inducible Kinase 1 Delay the Onset of Endothelial Senescence by Directly Interacting with Human Telomerase Reverse Transcriptase. Rejuvenation Res 2016; 19:79-89. [PMID: 26230157 DOI: 10.1089/rej.2015.1726] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Endothelial senescence is characteristic of vascular aging. Serum- and glucocorticoid-inducible kinase (SGK)1 belongs to a family of serine/threonine kinases regulated by various external stimuli. SGK1 has been shown to be protective against reactive oxygen species (ROS) production and to be involved in processes regulating aging. However, data on the direct relationship between SGK1 and senescence are sparse. In the present study, we sought to investigate the role of SGK1 in cellular aging by using human umbilical vein endothelial cells (HUVECs) infected with different constructs. Senescence was measured at different cellular stages by senescence-associated β-galactosidase (SA-β-gal) activity, human telomerase reverse transcriptase (hTERT) activity, p21 protein levels, and ROS production. HUVECs over-expressing full-length SGK1 (wild-type SGK1 [SGK1WT]) showed a decrease in SA-β-gal and p21 expression and a corresponding increase in hTERT activity in the early stages of aging. Moreover, SGK1WT presented lower levels of ROS production. A direct interaction between SGK1WT and hTERT was also shown by co-immunoprecipitation. The SGK1Δ60 isoform, lacking the amino-terminal 60 amino acids, did not show interaction with hTERT, suggesting a pivotal role of this protein site for the SGK1 anti-aging function. The results from this study may be of particular importance, because SGK1WT over-expression by activating telomerase and reducing ROS levels may delay the processes of endothelial senescence.
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Affiliation(s)
- Katia Basello
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Francesca Pacifici
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Barbara Capuani
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Donatella Pastore
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Marco F Lombardo
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Francesca Ferrelli
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Andrea Coppola
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Giulia Donadel
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Roberto Arriga
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Giuseppe Sconocchia
- 2 Institute of Translational Pharmacology , National Research Council, Rome, Italy
| | - Alfonso Bellia
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Paola Rogliani
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Massimo Federici
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Paolo Sbraccia
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - Davide Lauro
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy
| | - David Della-Morte
- 1 Department of Systems Medicine, University of Rome Tor Vergata , Italy .,3 IRCCS San Raffaele Pisana , Rome, Italy
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297
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Abbas M, Jesel L, Auger C, Amoura L, Messas N, Manin G, Rumig C, León-González AJ, Ribeiro TP, Silva GC, Abou-Merhi R, Hamade E, Hecker M, Georg Y, Chakfe N, Ohlmann P, Schini-Kerth VB, Toti F, Morel O. Endothelial Microparticles From Acute Coronary Syndrome Patients Induce Premature Coronary Artery Endothelial Cell Aging and Thrombogenicity: Role of the Ang II/AT1 Receptor/NADPH Oxidase-Mediated Activation of MAPKs and PI3-Kinase Pathways. Circulation 2016; 135:280-296. [PMID: 27821539 DOI: 10.1161/circulationaha.116.017513] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 10/19/2016] [Indexed: 01/01/2023]
Abstract
BACKGROUND Microparticles (MPs) have emerged as a surrogate marker of endothelial dysfunction and cardiovascular risk. This study examined the potential of MPs from senescent endothelial cells (ECs) or from patients with acute coronary syndrome (ACS) to promote premature EC aging and thrombogenicity. METHODS Primary porcine coronary ECs were isolated from the left circumflex coronary artery. MPs were prepared from ECs and venous blood from patients with ACS (n=30) and from healthy volunteers (n=4) by sequential centrifugation. The level of endothelial senescence was assessed as senescence-associated β-galactosidase activity using flow cytometry, oxidative stress using the redox-sensitive probe dihydroethidium, tissue factor activity using an enzymatic Tenase assay, the level of target protein expression by Western blot analysis, platelet aggregation using an aggregometer, and shear stress using a cone-and-plate viscometer. RESULTS Senescence, as assessed by senescence-associated β-galactosidase activity, was induced by the passaging of porcine coronary artery ECs from passage P1 to P4, and was associated with a progressive shedding of procoagulant MPs. Exposure of P1 ECs to MPs shed from senescent P3 cells or circulating MPs from ACS patients induced increased senescence-associated β-galactosidase activity, oxidative stress, early phosphorylation of mitogen-activated protein kinases and Akt, and upregulation of p53, p21, and p16. Ex vivo, the prosenescent effect of circulating MPs from ACS patients was evidenced only under conditions of low shear stress. Depletion of endothelial-derived MPs from ACS patients reduced the induction of senescence. Prosenescent MPs promoted EC thrombogenicity through tissue factor upregulation, shedding of procoagulant MPs, endothelial nitric oxide synthase downregulation, and reduced nitric oxide-mediated inhibition of platelet aggregation. These MPs exhibited angiotensin-converting enzyme activity and upregulated AT1 receptors and angiotensin-converting enzyme in P1 ECs. Losartan, an AT1 receptor antagonist, and inhibitors of either mitogen-activated protein kinases or phosphoinositide 3-kinase prevented the MP-induced endothelial senescence. CONCLUSIONS These findings indicate that endothelial-derived MPs from ACS patients induce premature endothelial senescence under atheroprone low shear stress and thrombogenicity through angiotensin II-induced redox-sensitive activation of mitogen-activated protein kinases and phosphoinositide 3-kinase/Akt. They further suggest that targeting endothelial-derived MP shedding and their bioactivity may be a promising therapeutic strategy to limit the development of an endothelial dysfunction post-ACS.
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Affiliation(s)
- Malak Abbas
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Laurence Jesel
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Cyril Auger
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Lamia Amoura
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Nathan Messas
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Guillaume Manin
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Cordula Rumig
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Antonio J León-González
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Thais P Ribeiro
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Grazielle C Silva
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Raghida Abou-Merhi
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Eva Hamade
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Markus Hecker
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Yannick Georg
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Nabil Chakfe
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Patrick Ohlmann
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Valérie B Schini-Kerth
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Florence Toti
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.)
| | - Olivier Morel
- From UMR CNRS 7213 Laboratoire de Biophotonique et Pharmacologie, Faculté de Pharmacie, Université de Strasbourg, Illkirch, France (M.A., L.J., C.A., L.A., A.J.L.-G., T.P.R., G.C.S., V.B.S.-K., F.T., O.M.); EA7293 Stress Vasculaire et Tissulaire en Transplantation, Faculté de Pharmacie, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Illkirch, France (M.A., L.J., L.A.); Faculté des Sciences I. Laboratoire Génomique et Santé, Plateforme de Recherche en Sciences et Technologies, Université Libanaise, Hadath, Lebanon )M.A., R.A.-M., E.H.); Pôle d'Activité Médico-Chirurgicale Cardio-Vasculaire, Nouvel Hôpital Civil, Centre Hospitalier Universitaire, Fédération de Médecine Translationnelle de Strasbourg, France (N.M., G.M., Y.G., N.C., P.O., O.M.); and Institute of Physiology and Pathophysiology, Division of Cardiovascular Physiology, University of Heidelberg, Germany (C.R., M.H.).
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Kuang DB, Zhou JP, Yu LY, Zeng WJ, Xiao J, Zhu GZ, Zhang ZL, Chen XP. DDAH1-V3 transcript might act as miR-21 sponge to maintain balance of DDAH1-V1 in cultured HUVECs. Nitric Oxide 2016; 60:59-68. [DOI: 10.1016/j.niox.2016.09.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 09/11/2016] [Accepted: 09/20/2016] [Indexed: 01/01/2023]
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Sirt1 expression is associated with CD31 expression in blood cells from patients with chronic obstructive pulmonary disease. Respir Res 2016; 17:139. [PMID: 27784320 PMCID: PMC5081972 DOI: 10.1186/s12931-016-0452-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 10/14/2016] [Indexed: 12/31/2022] Open
Abstract
Background Cigarette smoke induced oxidative stress has been shown to reduce silent information regulator 1 (Sirt1) levels in lung tissue from smokers and patients with COPD patients. Sirt1 is known to inhibit endothelial senescence and may play a protective role in vascular cells. Endothelial progenitor cells (EPCs) are mobilized into circulation under various pathophysiological conditions, and are thought to play an important role in tissue repair in chronic obstructive lung disease (COPD). Therefore, Sirt1 and EPC-associated mRNAs were measured in blood samples from patients with COPD and from cultured CD34+ progenitor cells to examine whether these genes are associated with COPD development. Methods This study included 358 patients with a smoking history of more than 10 pack-years. RNA was extracted from blood samples and from CD34+ progenitor cells treated with cigarette smoke extract (CSE), followed by assessment of CD31, CD34, Sirt1 mRNA, miR-34a, and miR-126-3p expression by real-time RT-PCR. Results The expression of CD31, CD34, Sirt1 mRNAs, and miR-126-3p decreased and that of miR-34a increased in moderate COPD compared with that in control smokers. However, no significant differences in these genes were observed in blood cells from patients with severe COPD compared with those in control smokers. CSE significantly decreased Sirt1 and increased miR-34a expression in cultured progenitor cells. Conclusion Sirt1 expression in blood cells from patients with COPD could be a biomarker for disease stability in patients with moderate COPD. MiR-34a may participate in apoptosis and/or senescence of EPCs in smokers. Decreased expression of CD31, CD34, and miR-126-3p potentially represents decreased numbers of EPCs in blood cell from patients with COPD.
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Priebe MG, McMonagle JR. Effects of Ready-to-Eat-Cereals on Key Nutritional and Health Outcomes: A Systematic Review. PLoS One 2016; 11:e0164931. [PMID: 27749919 PMCID: PMC5066953 DOI: 10.1371/journal.pone.0164931] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 10/04/2016] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND In many countries breakfast cereals are an important component of breakfast. This systematic review assesses the contribution of consumption of ready-to eat cereal (RTEC) to the recommended nutrient intake. Furthermore, the effects of RTEC consumption on key health parameters are investigated as well as health promoting properties of RTEC. METHOD The Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE and CINAHL have been searched up till 16th of June 2015. Randomized controlled trials were excluded if RTEC were used during hypocaloric diets, if RTEC were eaten at other times than breakfast and if breakfasts included other products than RTEC, milk and fruit. Observational studies were excluded when "breakfast cereals" were not defined or their definition included cooked cereals. From cross-sectional studies only data concerning energy and nutrient intake as well as micronutrient status were used. RESULTS From 4727 identified citations 64 publications met the inclusion criteria of which 32 were cross-sectional studies, eight prospective studies and 24 randomized controlled trials. Consumption of RTEC is associated with a healthier dietary pattern, concerning intake of carbohydrates, dietary fiber, fat and micronutrients, however total sugar intake is higher. Persons consuming RTEC frequently (≥ 5 times/week) have a lower risk of inadequate micronutrient intake especially for vitamin A, calcium, folate, vitamin B 6, magnesium and zinc. Evidence from prospective studies suggests that whole grain RTEC may have beneficial effects on hypertension and type 2 diabetes. Consumption of RTEC with soluble fiber helps to reduce LDL cholesterol in hypercholesterolemic men and RTEC fortified with folate can reduce plasma homocysteine. DISCUSSION One of the review's strengths is its thorough ex/inclusion of studies. Limitations are that results of observational studies were based on self-reported data and that many studies were funded by food-industry. CONCLUSION Consumption of RTEC, especially of fiber-rich or whole grain RTEC, is implicated with several beneficial nutritional and health outcomes. The effect on body weight, intestinal health and cognitive function needs further evaluation. Of concern is the higher total sugar intake associated with frequent RTEC consumption.
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Affiliation(s)
- Marion G. Priebe
- University Medical Center Groningen, University of Groningen, Center for Medical Biomics, Groningen, The Netherlands
- Nutrition Reviewed, Murnau, Germany
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