1
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Gu P, Wu Y, Lu W. New Perspectives on the Role and Therapeutic Potential of Melatonin in Cardiovascular Diseases. Am J Cardiovasc Drugs 2024; 24:171-195. [PMID: 38436867 DOI: 10.1007/s40256-024-00631-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/18/2024] [Indexed: 03/05/2024]
Abstract
Cardiovascular diseases (CVDs) are the leading cause of death and disability worldwide. It is essential to develop novel interventions to prevent/delay CVDs by targeting their fundamental cellular and molecular processes. Melatonin is a small indole molecule acting both as a hormone of the pineal gland and as a local regulator molecule in various tissues. It has multiple features that may contribute to its cardiovascular protection. Moreover, melatonin enters all cells and subcellular compartments and crosses morphophysiological barriers. Additionally, this indoleamine also serves as a safe exogenous therapeutic agent. Increasing evidence has demonstrated the beneficial effects of melatonin in preventing and improving cardiovascular risk factors. Exogenous administration of melatonin, as a result of its antioxidant and anti-inflammatory properties, has been reported to decrease blood pressure, protect against atherosclerosis, attenuate molecular and cellular damage resulting from cardiac ischemia/reperfusion, and improve the prognosis of myocardial infarction and heart failure. This review aims to summarize the beneficial effects of melatonin against these conditions, the possible protective mechanisms of melatonin, and its potential clinical applicability in CVDs.
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Affiliation(s)
- Pengchen Gu
- Department of Physiology and Neurobiology, Suzhou Medical College of Soochow University, 199 Ren-Ai Road, Suzhou, 215123, Jiang Su Prov., China
| | - Yuxin Wu
- Department of Physiology and Neurobiology, Suzhou Medical College of Soochow University, 199 Ren-Ai Road, Suzhou, 215123, Jiang Su Prov., China
| | - Weiwei Lu
- Department of Physiology and Neurobiology, Suzhou Medical College of Soochow University, 199 Ren-Ai Road, Suzhou, 215123, Jiang Su Prov., China.
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2
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Sun L, Wang L, Ye KX, Wang S, Zhang R, Juan Z, Feng L, Min S. Endothelial Glycocalyx in Aging and Age-related Diseases. Aging Dis 2023; 14:1606-1617. [PMID: 37196119 PMCID: PMC10529737 DOI: 10.14336/ad.2023.0131] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/31/2023] [Indexed: 05/19/2023] Open
Abstract
The worldwide population is aging exponentially, creating burdens to patients, their families and society. Increasing age is associated with higher risk of a wide range of chronic diseases, and aging of the vascular system is closely linked to the development of many age-related diseases. Endothelial glycocalyx is a layer of proteoglycan polymers on the surface of the inner lumen of blood vessels. It plays an important role in maintaining vascular homeostasis and protecting various organ functions. Endothelial glycocalyx loss happens through the aging process and repairing the endothelial glycocalyx may alleviate the symptoms of age-related diseases. Given the important role of the glycocalyx and its regenerative properties, it is posited that the endothelial glycocalyx may be a potential therapeutic target for aging and age-related diseases and repairing endothelial glycocalyx could play a role in the promotion of healthy aging and longevity. Here, we review the composition, function, shedding, and manifestation of the endothelial glycocalyx in aging and age-related diseases, as well as regeneration of endothelial glycocalyx.
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Affiliation(s)
- Lina Sun
- School of Anesthesiology, Weifang Medical University, Weifang, China.
- Department of Anesthesiology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - Lingyan Wang
- School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Kaisy Xinhong Ye
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
| | - Shoushi Wang
- School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Rui Zhang
- School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Zhaodong Juan
- School of Anesthesiology, Weifang Medical University, Weifang, China.
| | - Lei Feng
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
| | - Su Min
- Department of Anesthesiology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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3
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Fesharaki NJ, Taylor A, Mosby K, Kim JH, Ress D. Global effects of aging on the hemodynamic response function in the human brain. RESEARCH SQUARE 2023:rs.3.rs-3299293. [PMID: 37720046 PMCID: PMC10503846 DOI: 10.21203/rs.3.rs-3299293/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
In functional magnetic resonance imaging, the hemodynamic response function (HRF) is a transient, stereotypical response to local changes in cerebral hemodynamics and oxygen metabolism due to briefly (< 4 s) evoked neural activity. Accordingly, the HRF is often used as an impulse response with the assumption of linearity in data analysis. In cognitive aging studies, it has been very common to interpret differences in brain activation as age-related changes in neural activity. Contrary to this assumption, however, evidence has accrued that normal aging may also significantly affect the vasculature, thereby affecting cerebral hemodynamics and metabolism, confounding interpretation of fMRI aging studies. In this study, use was made of a multisensory stimulus to evoke the HRF in ~ 87% of cerebral cortex in cognitively intact adults with ages ranging from 22-75 years. The stimulus evokes both positive and negative HRFs, which were characterized using model-free parameters in native-space coordinates. Results showed significant age trends in HRF parameter distributions in terms of both amplitudes (e.g., peak amplitude and CNR) and temporal dynamics (e.g., full-width-at-half-maximum). This work sets the stage for using HRF methods as a biomarker for age-related pathology.
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4
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Zhao Y, Li Y, Li H, Shi S. Dopamine D1 receptor activation ameliorates ox-LDL-induced endothelial cell senescence via CREB/Nrf2 pathway. Exp Cell Res 2023; 425:113542. [PMID: 36894051 DOI: 10.1016/j.yexcr.2023.113542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 03/09/2023]
Abstract
Endothelial cell senescence is involved in endothelial dysfunction and aging-related vascular diseases. The D1-like dopamine receptor (DR1), a number of G-protein-coupled receptors, is currently under consideration as a potential therapeutic target for the prevention of atherosclerosis. However, the role of DR1 in regulating ox-LDL-stimulated endothelial cell senescence remains unknown. Here, we found that the elevated Prx hyperoxidation and reactive oxygen species (ROS) levels in ox-LDL-treated Human umbilical vein endothelial cells (HUVECs) were observed, suppressed by DR1 agonist SKF38393. Increased proportion of senescence-associated β-galactosidase (SA-β-gal) positive staining cells and activated p16/p21/p53 pathway in ox-LDL-treated HUVECs were significantly abolished by DR1 activation. In addition, SKF38393 increased the phosphorylation of cAMP response element-binding protein (CREB) at serine-133, nuclear accumulation of nuclear factor erythroid 2-related factor 2 (Nrf2) and expression of HO-1 in HUVECs. In contrast, adding H-89, a PKA inhibitor, diminished the effects of DR1 activation. Further studies performed with DR1 siRNA confirmed that DR1 was involved in CREB/Nrf2 pathway. Taken together, DR1 activation reduces ROS production and cell senescence by upregulating CREB/Nrf2 antioxidant signaling in ox-LDL-induced endothelial cells. Thus, DR1 could be a potential molecular target to counteract oxidative stress-induced cellular senescence.
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Affiliation(s)
- Yiming Zhao
- Department of Pathophysiology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Yuxia Li
- Department of Pathology, Northeast Yunnan Regional Central Hospital, Zhaotong, Yunnan, 657000, China
| | - Hongxia Li
- Department of Pathophysiology, Harbin Medical University, Harbin, Heilongjiang, 150081, China
| | - Sa Shi
- Department of Pathophysiology, Harbin Medical University, Harbin, Heilongjiang, 150081, China.
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5
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Chan YK, Cheng CY, Sabanayagam C. Eyes as the windows into cardiovascular disease in the era of big data. Taiwan J Ophthalmol 2023; 13:151-167. [PMID: 37484607 PMCID: PMC10361436 DOI: 10.4103/tjo.tjo-d-23-00018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 04/11/2023] [Indexed: 07/25/2023] Open
Abstract
Cardiovascular disease (CVD) is a major cause of mortality and morbidity worldwide and imposes significant socioeconomic burdens, especially with late diagnoses. There is growing evidence of strong correlations between ocular images, which are information-dense, and CVD progression. The accelerating development of deep learning algorithms (DLAs) is a promising avenue for research into CVD biomarker discovery, early CVD diagnosis, and CVD prognostication. We review a selection of 17 recent DLAs on the less-explored realm of DL as applied to ocular images to produce CVD outcomes, potential challenges in their clinical deployment, and the path forward. The evidence for CVD manifestations in ocular images is well documented. Most of the reviewed DLAs analyze retinal fundus photographs to predict CV risk factors, in particular hypertension. DLAs can predict age, sex, smoking status, alcohol status, body mass index, mortality, myocardial infarction, stroke, chronic kidney disease, and hematological disease with significant accuracy. While the cardio-oculomics intersection is now burgeoning, very much remain to be explored. The increasing availability of big data, computational power, technological literacy, and acceptance all prime this subfield for rapid growth. We pinpoint the specific areas of improvement toward ubiquitous clinical deployment: increased generalizability, external validation, and universal benchmarking. DLAs capable of predicting CVD outcomes from ocular inputs are of great interest and promise to individualized precision medicine and efficiency in the provision of health care with yet undetermined real-world efficacy with impactful initial results.
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Affiliation(s)
- Yarn Kit Chan
- Ophthalmology and Visual Sciences Academic Clinical Program (Eye ACP), Duke-NUS Medical School, Singapore
| | - Ching-Yu Cheng
- Ophthalmology and Visual Sciences Academic Clinical Program (Eye ACP), Duke-NUS Medical School, Singapore
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore
- Center for Innovation and Precision Eye Health, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of Ophthalmology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Charumathi Sabanayagam
- Ophthalmology and Visual Sciences Academic Clinical Program (Eye ACP), Duke-NUS Medical School, Singapore
- Singapore Eye Research Institute, Singapore National Eye Centre, Singapore
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Hu HY, Ma YH, Deng YT, Ou YN, Cheng W, Feng JF, Tan L, Yu JT. Residential greenness and risk of incident dementia: A prospective study of 375,342 participants. ENVIRONMENTAL RESEARCH 2023; 216:114703. [PMID: 36334822 DOI: 10.1016/j.envres.2022.114703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 10/25/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
INTRODUCTION Incorporation of greenspace may be a novel environmental policy that might result in positive health effects; hence, this study aimed to investigate the association between residential greenness and dementia incidence. The effects of particulate air pollution on mediating dementia were also determined. METHODS A prospective cohort study involving 375,342 UK biobank participants was conducted, in which Cox regression models were used to determine the association of greenspace exposure with the risks of all-cause dementia (ACD), Alzheimer's disease (AD) and vascular dementia (VD). Sociodemographic variables, lifestyle or dietary characteristics and apolipoprotein E4 status were controlled using two levels of adjusted models. Mediation analyses were performed to determine the mediation effects of PMs. RESULTS The results indicated that there were 4929 ACD, 2132 AD, and 1184 VD incidents throughout the 8-year study. In the multi-adjusted model, each interquartile increment in greenspace (buffer 300m) conferred the lower risks of ACD (HR = 0.968, 95% confidence intervals [CI]: 0.938-1.000]) and VD (HR = 0.926, 95% CI: 0.867-0.989). The fourth greenspace quartile conferred also reduced risks of ACD (HR = 0.891, 95% CI: 0.804-0.989) and VD (HR = 0.778, 95% CI: 0.630-0.960) in reference to the first quartile. With regard to 1000m catchment, each interquartile increment conferred a 5.0% (95% CI: 1.8-8.1) lower risk of ACD, and the fourth greenspace quartile conferred a 10.9% (95% CI: 0.9-19.8) lower risk of ACD compared to the first quartile. The protective effect of greenness might be mediated based on the reduction of PM2.5 and PM10 (Pindirect effect<0.05). CONCLUSIONS Increasing greenness reduces the risk of dementia. This study suggests that greenspace is an environmental strategy that helps prevent dementia.
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Affiliation(s)
- He-Ying Hu
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China.
| | - Ya-Hui Ma
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China.
| | - Yue-Ting Deng
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China.
| | - Ya-Nan Ou
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China.
| | - Wei Cheng
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China.
| | - Jian-Feng Feng
- Institute of Science and Technology for Brain-Inspired Intelligence, Fudan University, Shanghai, China.
| | - Lan Tan
- Department of Neurology, Qingdao Municipal Hospital, Qingdao University, Qingdao, China.
| | - Jin-Tai Yu
- Department of Neurology and National Center for Neurological Disorders, Huashan Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Shanghai Medical College, Fudan University, Shanghai, China.
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Zhu Z, Hu W, Chen R, Xiong R, Wang W, Shang X, Chen Y, Kiburg K, Shi D, He S, Huang Y, Zhang X, Tang S, Zeng J, Yu H, Yang X, He M. Retinal age gap as a predictive biomarker of stroke risk. BMC Med 2022; 20:466. [PMID: 36447293 PMCID: PMC9710167 DOI: 10.1186/s12916-022-02620-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 10/20/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND The aim of this study is to investigate the association of retinal age gap with the risk of incident stroke and its predictive value for incident stroke. METHODS A total of 80,169 fundus images from 46,969 participants in the UK Biobank cohort met the image quality standard. A deep learning model was constructed based on 19,200 fundus images of 11,052 disease-free participants at baseline for age prediction. Retinal age gap (retinal age predicted based on the fundus image minus chronological age) was generated for the remaining 35,917 participants. Stroke events were determined by data linkage to hospital records on admissions and diagnoses, and national death registers, whichever occurred earliest. Cox proportional hazards regression models were used to estimate the effect of retinal age gap on risk of stroke. Logistic regression models were used to estimate the predictive value of retinal age and well-established risk factors in 10-year stroke risk. RESULTS A total of 35,304 participants without history of stroke at baseline were included. During a median follow-up of 5.83 years, 282 (0.80%) participants had stroke events. In the fully adjusted model, each one-year increase in the retinal age gap was associated with a 4% increase in the risk of stroke (hazard ratio [HR] = 1.04, 95% confidence interval [CI]: 1.00-1.08, P = 0.029). Compared to participants with retinal age gap in the first quintile, participants with retinal age gap in the fifth quintile had significantly higher risks of stroke events (HR = 2.37, 95% CI: 1.37-4.10, P = 0.002). The predictive capability of retinal age alone was comparable to the well-established risk factor-based model (AUC=0.676 vs AUC=0.661, p=0.511). CONCLUSIONS We found that retinal age gap was significantly associated with incident stroke, implying the potential of retinal age gap as a predictive biomarker of stroke risk.
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Affiliation(s)
- Zhuoting Zhu
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China.,Centre for Eye Research Australia, Ophthalmology, University of Melbourne, Melbourne, Australia.,Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, Australia
| | - Wenyi Hu
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China.,Centre for Eye Research Australia, Ophthalmology, University of Melbourne, Melbourne, Australia.,Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, Australia
| | - Ruiye Chen
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China.,Centre for Eye Research Australia, Ophthalmology, University of Melbourne, Melbourne, Australia.,Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, Australia
| | - Ruilin Xiong
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Wei Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Xianwen Shang
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China.,Centre for Eye Research Australia, Ophthalmology, University of Melbourne, Melbourne, Australia.,Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, Australia
| | - Yifan Chen
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China.,John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Katerina Kiburg
- Centre for Eye Research Australia, Ophthalmology, University of Melbourne, Melbourne, Australia
| | - Danli Shi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Shuang He
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yu Huang
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Xueli Zhang
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Shulin Tang
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Jieshan Zeng
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Honghua Yu
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Xiaohong Yang
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China.
| | - Mingguang He
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China. .,Centre for Eye Research Australia, Ophthalmology, University of Melbourne, Melbourne, Australia. .,Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, Australia. .,State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.
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8
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Mensah E, Ali K, Banya W, Kirkham FA, Mengozzi M, Ghezzi P, Rajkumar C. FRailty and Arterial stiffness - the role of oXidative stress and Inflammation (FRAXI study). Biomark Insights 2022; 17:11772719221130719. [PMID: 36275839 PMCID: PMC9583202 DOI: 10.1177/11772719221130719] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 09/16/2022] [Indexed: 11/08/2022] Open
Abstract
Objective There is an association between frailty and arterial stiffness. However, arterial stiffness does not uniformly correlate with the spectrum of frailty states. Both oxidative stress and inflammaging contribute to vascular ageing. There are no human studies exploring links between arterial stiffness, oxidative stress, inflammaging and frailty. Our objective is to investigate arterial stiffness and inflammaging as predictors of frailty states. Methods An observational longitudinal cohort study will be used to examine the association between arterial stiffness, oxidative stress and inflammation in 50 older adults (⩾70 years) with clinical frailty scores (CFS) ⩽6 over 6 months. All study measurements will be taken at baseline. Frailty assessment will include hand-grip strength, timed-up and go test, mini-mental state examination, geriatric depression scale and sarcopenia using body composition measurements with Tanita®. Arterial stiffness measurements will include carotid-femoral pulse wave velocity (cfPWV) and carotid-radial pulse wave velocity (crPWV) using Complior (Alam Medical, France). CAVI device will measure Cardio-ankle vascular index and ankle brachial index (ABI). Oxidative stress blood markers nitrotyrosine (NT) and 8-hydroxy-2'-deoxyguanosin (8-oxo-dG) and inflammation markers high-sensitive C-reactive protein (hs-CRP) and interlukin-6(IL-6) will be measured at baseline and 6 month along with lipid profile and glycated haemoglobin. Results data analysis plan Descriptive statistics for continuous data using means and standard deviations for normality distributed variables or medians and inter-quartile ranges for skewed variables will be used. Participants will be categorised into CFS 1-3, and CFS 4-6. Categorical data will use frequencies and comparison between groups. Change in frailty between the groups over 6 months will be compared using paired t-test. Simple linear regression will be done between frailty measures, arterial stiffness, inflammation and oxidative stress biomarkers. Significance will be at P < .05. Conclusion This study data will inform a larger, multi-centre study exploring further the interplay between frailty, biomarkers and arterial stiffness parameters.
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Affiliation(s)
- Ekow Mensah
- Brighton and Sussex Clinical Trials
Unit, University Hospitals Sussex NHS Trust, Brighton, UK,Ekow Mensah, Brighton and Sussex Clinical
Trials Unit, University Hospitals Sussex NHS Trust, Audrey Emerton Building,
Eastern Road, Brighton, BN2 5BE, UK.
| | - Khalid Ali
- Brighton and Sussex Clinical Trials
Unit, University Hospitals Sussex NHS Trust, Brighton, UK,Department of Medicine, Brighton and
Sussex Medical School, University of Sussex, Brighton, UK
| | - Winston Banya
- Research Office, Royal Brompton and
Harefield Clinical Group, Guy’s and St. Thomas’ NHS Foundation Trust, London,
UK
| | - Frances Ann Kirkham
- Brighton and Sussex Clinical Trials
Unit, University Hospitals Sussex NHS Trust, Brighton, UK
| | - Manuela Mengozzi
- Department of Medicine, Brighton and
Sussex Medical School, University of Sussex, Brighton, UK
| | | | - Chakravarthi Rajkumar
- Brighton and Sussex Clinical Trials
Unit, University Hospitals Sussex NHS Trust, Brighton, UK,Department of Medicine, Brighton and
Sussex Medical School, University of Sussex, Brighton, UK
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Endogenous Vasoactive Peptides and Vascular Aging-Related Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1534470. [PMID: 36225176 PMCID: PMC9550461 DOI: 10.1155/2022/1534470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 08/26/2022] [Accepted: 09/15/2022] [Indexed: 11/17/2022]
Abstract
Vascular aging is a specific type of organic aging that plays a central role in the morbidity and mortality of cardiovascular and cerebrovascular diseases among the elderly. It is essential to develop novel interventions to prevent/delay age-related vascular pathologies by targeting fundamental cellular and molecular aging processes. Endogenous vasoactive peptides are compounds formed by a group of amino acids connected by peptide chains that exert regulatory roles in intercellular interactions involved in a variety of biological and pathological processes. Emerging evidence suggests that a variety of vasoactive peptides play important roles in the occurrence and development of vascular aging and related diseases such as atherosclerosis, hypertension, vascular calcification, abdominal aortic aneurysms, and stroke. This review will summarize the cumulative roles and mechanisms of several important endogenous vasoactive peptides in vascular aging and vascular aging-related diseases. In addition, we also aim to explore the promising diagnostic function as biomarkers and the potential therapeutic application of endogenous vasoactive peptides in vascular aging-related diseases.
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10
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Liu L, Yang X, Liao Y, Wang C, Wang Y. Resveratrol alleviates Ang II-induced vascular smooth muscle cell senescence by upregulating E2F1/SOD2 axis. Toxicol Res (Camb) 2022; 11:831-840. [PMID: 36337239 PMCID: PMC9618109 DOI: 10.1093/toxres/tfac051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 07/06/2022] [Accepted: 07/15/2022] [Indexed: 09/05/2023] Open
Abstract
Background Vascular smooth muscle cells (VSMCs) senescence is a crucial factor relevant to accelerate cardiovascular diseases. Resveratrol (RES) has been reported that could obstruct vascular senescence. However, the detailed molecular mechanisms of RES in VSMCs senescence are still indistinct and deserve further investigations. Methods and Results In this study, VSMCs were treated with 100 nM angiotensin II (Ang II) for 3 days and then followed with a range of different concentrations of RES (0.5, 5, 15, 25, 35, 50 μM), and 25 μM of RES was chose for following experiments. We found that the E2F1 and SOD2 expressions were reduced in Ang II-induced VSMCs. RES treatment impeded Ang II-induced oxidative stress and mitochondrial dysfunction through elevating E2F1 and SOD2 expression, thereby alleviating VSMCs senescence. Additionally, E2F1 knockdown reversed the protective effects of RES on VSMCs senescence caused by Ang II administration. Ch-IP assay and dual luciferase reporter gene assay validated that E2F1 could bind to the promoter region of SOD2. Furthermore, E2F1 or SOD2 overexpression blocked Ang II-induced on VSMCs senescence. Conclusion In conclusion, RES mitigated Ang II-induced VSMCs senescence by suppressing oxidative stress and mitochondrial dysfunction through activating E2F1/SOD2 axis. Our study disclosed that RES might be a potential drug and the axis of its regulatory mechanism might be therapeutic targets for postponing vascular senescence.
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Affiliation(s)
- Lei Liu
- College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410125, China
- Hunan Economic & Trade Senior Technical School, Xiangtan, Hunan 410004, China
| | - Xiuhua Yang
- College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410125, China
- Hunan Economic & Trade Senior Technical School, Xiangtan, Hunan 410004, China
| | - Yiyang Liao
- Hunan Economic & Trade Senior Technical School, Xiangtan, Hunan 410004, China
| | - Chuanhua Wang
- College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410125, China
| | - Yuanliang Wang
- College of Food Science and Technology, Hunan Agricultural University, Changsha, Hunan 410125, China
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11
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Savopoulos C, Daios S, Kaiafa G. Vascular Aging and Stroke. Curr Med Chem 2022; 29:5476-5477. [DOI: 10.2174/092986732934220817123351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Christos Savopoulos
- First Propedeutic Department of Internal Medicine Aristotle University of Thessaloniki AHEPA University Hospital of Thessaloniki
Thessaloniki Greece
| | - Stylianos Daios
- First Propedeutic Department of Internal Medicine Aristotle University of Thessaloniki AHEPA University Hospital of Thessaloniki
Thessaloniki Greece
| | - Georgia Kaiafa
- First Propedeutic Department of Internal Medicine Aristotle University of Thessaloniki AHEPA University Hospital of Thessaloniki Thessaloniki Greece
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12
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Sanford M, Negri S, Tarantini S. Editorial: New developments in understanding brain and cerebromicrovascular aging: Toward prevention of vascular cognitive impairment and Alzheimer's disease. Front Aging Neurosci 2022; 14:1020271. [PMID: 36185480 PMCID: PMC9523741 DOI: 10.3389/fnagi.2022.1020271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Madison Sanford
- Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
| | - Sharon Negri
- Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
- Department of Biology and Biotechnology “Lazzaro Spallanzani”, Laboratory of General Physiology, University of Pavia, Pavia, Italy
| | - Stefano Tarantini
- Department of Biochemistry and Molecular Biology, Center for Geroscience and Healthy Brain Aging, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
- Peggy and Charles Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
- Hudson College of Public Health, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States
- *Correspondence: Stefano Tarantini
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13
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Xu H, Yu M, Yu Y, Li Y, Yang F, Liu Y, Han L, Xu Z, Wang G. KLF4 prevented angiotensin II-induced smooth muscle cell senescence by enhancing autophagic activity. Eur J Clin Invest 2022; 52:e13804. [PMID: 35506324 DOI: 10.1111/eci.13804] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/22/2022] [Accepted: 04/28/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Vascular aging is an important risk factor for various cardiovascular diseases. Transcription factor krüppel-like factor 4 (KLF4) could regulate the phenotypic transformation of the vascular smooth muscle cell (VSMC) in the pathogenesis of aortic diseases. The present study aimed to explore the role and mechanism of KLF4 in angiotensin II (Ang II)-induced VSMC senescence. METHODS The VSMC senescence mouse model was induced by sustained release of Ang II (1.0 μg/kg/min) for 4 weeks. The premature senescent VSMCs were induced by Ang II (0.1 μmol/L) for 72 h. Cellular senescence was measured by senescence-associated β-galactosidase (SA-β-gal) activity and p53/p16 expression. The autophagic activity was evaluated by autophagic flux and autophagic marker expression. RESULTS The expression of KLF4 was extremely increased in abdominal aorta tissues after 1-week Ang II stimulation (p < .01) but began to decrease in later periods. Decreased expression of KLF4 was also detected in premature senescent VSMCs. Overexpression of KLF4 could enhance the antisenescence ability of VSMCs. Significantly decreased amounts of SA-β-gal-positive cells and lower p53/p16 expression were detected in KLF4-overexpressing VSMCs (p < .01). Next, telomerase reverse transcriptase (TERT) was identified as a direct downstream target of KLF4 in VSMCs. Overexpression of KLF4 in VSMCs prevented the decreased expression of TERT under Ang II stimulation condition, which could in turn, contribute to the enhanced autophagic activity, and ultimately to the improved antisenescence ability of VSMCs. CONCLUSIONS Our results demonstrated that overexpression of KLF4 prevented Ang II-induced VSMC senescence by promoting TERT-mediated autophagy. These findings provided novel potential targets for the prevention and therapy of vascular aging.
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Affiliation(s)
- Hongjie Xu
- Department of Cardiovascular Surgery, Institute of Cardiac Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Manli Yu
- Department of Cardiology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yongchao Yu
- Department of Cardiovascular Surgery, Institute of Cardiac Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yang Li
- Department of Cardiovascular Surgery, Institute of Cardiac Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Fan Yang
- Department of Cardiovascular Surgery, Institute of Cardiac Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Yang Liu
- Department of Cardiovascular Surgery, Institute of Cardiac Surgery, Changhai Hospital, Naval Medical University, Shanghai, China.,Department of Critical Care Medicine, Naval Medical Center of PLA, Shanghai, China
| | - Lin Han
- Department of Cardiovascular Surgery, Institute of Cardiac Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Zhiyun Xu
- Department of Cardiovascular Surgery, Institute of Cardiac Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Guokun Wang
- Department of Cardiovascular Surgery, Institute of Cardiac Surgery, Changhai Hospital, Naval Medical University, Shanghai, China
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14
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Veerabathiran R, Mohammed V, Kalarani IB. Nanomedicine in Neuroscience: An Application Towards the Treatment of
Various Neurological Diseases. CURRENT NANOMEDICINE 2022; 12:84-92. [DOI: 10.2174/2468187312666220516144008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 03/23/2022] [Accepted: 03/29/2022] [Indexed: 12/07/2023]
Abstract
Absatract:
The effectiveness, cell viability, and selective delivery of medications and diagnostic substances to target organs, tissues, and organs are typical concerns in the care and prognosis of many illnesses. Neurological diseases pose complex challenges, as cerebral targeting represents a yet unresolved challenge in pharmacotherapy, owing to the blood-brain boundary, a densely com-pacted membrane of endothelial cells that prohibits undesired chemicals from reaching the brain. Engineered nanoparticles, with dimensions ranging from 1 to 100 nm, provide intriguing biomedi-cal techniques that may allow for resolving these issues, including the ability to cross the blood-brain barrier. It has substantially explored nanoparticles in the previous century, contributing to sub-stantial progress in biomedical studies and medical procedures. Using many synthesized nanoparti-cles on the molecular level has given many potential gains in various domains of regenerative medi-cine, such as illness detection, cascaded cell treatment, tissue regeneration, medication, and gene editing. This review will encapsulate the novel developments of nanostructured components used in neurological diseases with an emphasis on the most recent discoveries and forecasts for the future of varied biological nanoparticles for tissue repair, drug inventions, and the synthesizing of the deliv-ery mechanism.
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Affiliation(s)
- Ramakrishnan Veerabathiran
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamilnadu 603103, India
| | - Vajagathali Mohammed
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamilnadu 603103, India
| | - Iyshwarya Bhaskar Kalarani
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamilnadu 603103, India
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15
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Hu W, Wang W, Wang Y, Chen Y, Shang X, Liao H, Huang Y, Bulloch G, Zhang S, Kiburg K, Zhang X, Tang S, Yu H, Yang X, He M, Zhu Z. Retinal age gap as a predictive biomarker of future risk of Parkinson's disease. Age Ageing 2022; 51:6555657. [PMID: 35352798 PMCID: PMC8966015 DOI: 10.1093/ageing/afac062] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Indexed: 12/21/2022] Open
Abstract
Introduction retinal age derived from fundus images using deep learning has been verified as a novel biomarker of ageing. We aim to investigate the association between retinal age gap (retinal age–chronological age) and incident Parkinson’s disease (PD). Methods a deep learning (DL) model trained on 19,200 fundus images of 11,052 chronic disease-free participants was used to predict retinal age. Retinal age gap was generated by the trained DL model for the remaining 35,834 participants free of PD at the baseline assessment. Cox proportional hazards regression models were utilised to investigate the association between retinal age gap and incident PD. Multivariable logistic model was applied for prediction of 5-year PD risk and area under the receiver operator characteristic curves (AUC) was used to estimate the predictive value. Results a total of 35,834 participants (56.7 ± 8.04 years, 55.7% female) free of PD at baseline were included in the present analysis. After adjustment of confounding factors, 1-year increase in retinal age gap was associated with a 10% increase in risk of PD (hazard ratio [HR] = 1.10, 95% confidence interval [CI]: 1.01–1.20, P = 0.023). Compared with the lowest quartile of the retinal age gap, the risk of PD was significantly increased in the third and fourth quartiles (HR = 2.66, 95% CI: 1.13–6.22, P = 0.024; HR = 4.86, 95% CI: 1.59–14.8, P = 0.005, respectively). The predictive value of retinal age and established risk factors for 5-year PD risk were comparable (AUC = 0.708 and 0.717, P = 0.821). Conclusion retinal age gap demonstrated a potential for identifying individuals at a high risk of developing future PD.
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Affiliation(s)
- Wenyi Hu
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
- Ophthalmology, Centre for Eye Research Australia, University of Melbourne, Melbourne, Australia
- Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, Australia
| | - Wei Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yueye Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yifan Chen
- John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Xianwen Shang
- Ophthalmology, Centre for Eye Research Australia, University of Melbourne, Melbourne, Australia
| | - Huan Liao
- Neural Regeneration Group, Institute of Reconstructive Neurobiology, University of Bonn, Bonn, Germany
| | - Yu Huang
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Gabriella Bulloch
- Ophthalmology, Centre for Eye Research Australia, University of Melbourne, Melbourne, Australia
| | - Shiran Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Katerina Kiburg
- Ophthalmology, Centre for Eye Research Australia, University of Melbourne, Melbourne, Australia
| | - Xueli Zhang
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Shulin Tang
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Honghua Yu
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Xiaohong Yang
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
| | - Mingguang He
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
- Ophthalmology, Centre for Eye Research Australia, University of Melbourne, Melbourne, Australia
- Ophthalmology, Department of Surgery, University of Melbourne, Melbourne, Australia
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Zhuoting Zhu
- Department of Ophthalmology, Guangdong Academy of Medical Sciences, Guangdong Provincial People's Hospital, Guangzhou, China
- Ophthalmology, Centre for Eye Research Australia, University of Melbourne, Melbourne, Australia
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16
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Koutsaliaris IK, Moschonas IC, Pechlivani LM, Tsouka AN, Tselepis AD. Inflammation, Oxidative Stress, Vascular Aging And Atherosclerotic Ischemic Stroke. Curr Med Chem 2021; 29:5496-5509. [PMID: 34547993 DOI: 10.2174/0929867328666210921161711] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/11/2021] [Accepted: 08/18/2021] [Indexed: 11/22/2022]
Abstract
Vascular aging is a crucial risk factor for atherosclerotic ischemic stroke. Vascular aging is characterized by oxidative stress, endothelial dysfunction, inflammation, intimal and media thickening, as well as the gradual development of arterial stiffness, among other pathophysiological features. Regarding oxidative stress, increased concentration of reactive oxygen and nitrogen species is linked to atherosclerotic ischemic stroke in vascular aging. Additionally, oxidative stress is associated with an inflammatory response. Inflammation is related to aging through the "inflammaging" theory, which is characterized by decreased ability to cope with a variety of stressors, in combination with an increased pro-inflammatory state. Vascular aging is correlated with changes in cerebral arteries that are considered predictors of the risk for atherosclerotic ischemic stroke. The aim of the present review is to present the role of oxidative stress and inflammation in vascular aging, as well as their involvement in atherosclerotic ischemic stroke.
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Affiliation(s)
- Ioannis K Koutsaliaris
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
| | - Iraklis C Moschonas
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
| | - Louisa M Pechlivani
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
| | - Aikaterini N Tsouka
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
| | - Alexandros D Tselepis
- Atherothrombosis Research Centre/Laboratory of Biochemistry, Department of Chemistry, University of Ioannina, 45110, Ioannina. Greece
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17
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Page J, Erskine RM, Hopkins ND. Skeletal muscle properties and vascular function do not differ between healthy, young vegan and omnivorous men. Eur J Sport Sci 2021; 22:559-568. [PMID: 33905293 DOI: 10.1080/17461391.2021.1923814] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A vegan diet is associated with reduced cardiovascular morbidity and mortality, but protein deficiencies may be detrimental to skeletal muscle structure and function. The aim of this study was to compare the vascular and skeletal muscle properties between young, healthy, recreationally active habitual vegan (VEG) and omnivorous (OMN) men. Sixteen OMN and nine VEG underwent ultrasound scans to determine brachial artery flow-mediated dilation (FMD) and carotid artery intima-media thickness (cIMT) and vastus lateralis (VL) muscle thickness and fascicle pennation angle. Knee extension maximal voluntary isometric contraction (MVIC) force was assessed on an isokinetic dynamometer, and V˙O2max on a cycle ergometer and online gas analysis system. A three-day food diary determined habitual dietary behaviour. Bayesian analyses of independent groups provided "moderate" to "very strong" evidence for lower consumption of absolute (63±21 g/d vs. 98 ± 30 g/d; Bayes Factor (BF01) = 0.140) and relative (0.86 ± 0.29 g/kg/d vs.1.36 ± 0.52 g/kg/d; BF01 = 0.259) protein, absolute saturated fat (15.2 ± 7.9 g vs. 30.3 ± 11.8 g; BF01 = 0.089) and cholesterol (5.0 ± 6.0 mg vs. 337.9 ± 232.6 mg; BF01 = 0.019) in VEG compared to OMN, respectively. Further, there was "anecdotal" evidence to support no differences in FMD (3.37 ± 3.31% vs. 4.58 ± 5.82%; BF01 = 2.591), cIMT (0.51 ± 0.07 mm vs. 0.49 ± 0.04 mm; BF01 = 2.510), VL thickness (26.1 ± 3.7 mm vs. 27.8 ± 6.4 mm; BF01 = 2.726), fascicle pennation angle (16.6 ± 4.7° vs. 17.7 ± 3.7°; BF01 = 2.844), MVIC (627 ± 182 N vs. 551 ± 102 N; BF01 = 1.656) or V˙O2max (40.8 ± 9.8 ml/kg/min vs. 35.8 ± 5.2 ml/kg/min; BF01 = 1.218) between VEG and OMN, respectively. Despite marked differences in habitual nutrient intake, healthy, young vegan and omnivorous men did not differ regarding vascular and skeletal muscle structure and function, or cardiovascular fitness.
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Affiliation(s)
- Joe Page
- School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
| | - Robert M Erskine
- School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK.,Institute of Sport, Exercise and Health, University College London, London, UK
| | - Nicola D Hopkins
- School of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK
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18
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Ma Y, Zheng B, Zhang XH, Nie ZY, Yu J, Zhang H, Wang DD, Shi B, Bai Y, Yang Z, Wen JK. circACTA2 mediates Ang II-induced VSMC senescence by modulation of the interaction of ILF3 with CDK4 mRNA. Aging (Albany NY) 2021; 13:11610-11628. [PMID: 33885378 PMCID: PMC8109074 DOI: 10.18632/aging.202855] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 03/13/2021] [Indexed: 04/12/2023]
Abstract
Chronic angiotensin II (Ang II) stimulation induces vascular smooth muscle cell (VSMC) senescence, and circRNAs and members of the ILF3 family are implicated in cellular senescence, but the mechanism underlying regulation of circRNAs and ILF3 by Ang II in VSMCs remains poorly understood. Here, a model of Ang II-induced VSMC senescence and the renal artery of hypertensive patients were used to investigate the roles and mechanisms of circACTA2 and ILF3 in VSMC senescence. We show that circACTA2 expression was elevated in Ang II-stimulated VSMCs and in the vascular walls of hypertensive patients. circACTA2 knockdown largely abrogated Ang II-induced VSMC senescence as shown by decreased p21 expression and increased CDK4 expression as well as by decreased SA β-gal-positive cells. Oligo pull-down and RIP assays revealed that both circACTA2 and CDK4 mRNA could bind with ILF3, and Ang II facilitated circACTA2 association with ILF3 and attenuated ILF3 interaction with CDK4 mRNA. Mechanistically, increased circACTA2 by Ang II reduced ILF3 association with CDK4 mRNA by competing with CDK4 mRNA to bind to ILF3, which decreases CDK4 mRNA stability and protein expression, thus leading to Ang II-induced VSMC senescence. Targeting the circACTA2-ILF3-CDK4 axis may provide a novel therapeutic strategy for VSMC senescence-associated cardiovascular diseases.
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Affiliation(s)
- Ying Ma
- Department of Biochemistry and Molecular Biology, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang 050017, China
- Department of Biochemistry and Molecular Biology, Binzhou Medical University, Yantai 264003, China
| | - Bin Zheng
- Department of Biochemistry and Molecular Biology, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang 050017, China
| | - Xin-Hua Zhang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang 050017, China
| | - Zi-Yuan Nie
- Department of Urology, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Jing Yu
- Department of Biochemistry and Molecular Biology, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang 050017, China
| | - Hong Zhang
- Department of Urology, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Dan-Dan Wang
- Department of Urology, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Bei Shi
- Department of Urology, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Yang Bai
- Department of Biochemistry and Molecular Biology, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang 050017, China
| | - Zhan Yang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang 050017, China
- Department of Urology, The Second Hospital of Hebei Medical University, Shijiazhuang 050000, China
| | - Jin-Kun Wen
- Department of Biochemistry and Molecular Biology, Key Laboratory of Neural and Vascular Biology, Ministry of Education, Hebei Medical University, Shijiazhuang 050017, China
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19
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Kuang H, Zhou ZF, Zhu YG, Wan ZK, Yang MW, Hong FF, Yang SL. Pharmacological Treatment of Vascular Dementia: A Molecular Mechanism Perspective. Aging Dis 2021; 12:308-326. [PMID: 33532143 PMCID: PMC7801279 DOI: 10.14336/ad.2020.0427] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 04/27/2020] [Indexed: 11/01/2022] Open
Abstract
Vascular dementia (VaD) is a neurodegenerative disease, with cognitive dysfunction attributable to cerebrovascular factors. At present, it is the second most frequently occurring type of dementia in older adults (after Alzheimer's disease). The underlying etiology of VaD has not been completely elucidated, which limits its management. Currently, there are no approved standard treatments for VaD. The drugs used in VaD are only suitable for symptomatic treatment and cannot prevent or reduce the occurrence and progression of VaD. This review summarizes the current status of pharmacological treatment for VaD, from the perspective of the molecular mechanisms specified in various pathogenic hypotheses, including oxidative stress, the central cholinergic system, neuroinflammation, neuronal apoptosis, and synaptic plasticity. As VaD is a chronic cerebrovascular disease with multifactorial etiology, combined therapy, targeting multiple pathophysiological factors, may be the future trend in VaD.
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Affiliation(s)
- Huang Kuang
- 1Department of Physiology, College of Medicine, Nanchang University, Nanchang, China
| | - Zhi-Feng Zhou
- 1Department of Physiology, College of Medicine, Nanchang University, Nanchang, China
| | - Yu-Ge Zhu
- 1Department of Physiology, College of Medicine, Nanchang University, Nanchang, China
| | - Zhi-Kai Wan
- 1Department of Physiology, College of Medicine, Nanchang University, Nanchang, China
| | - Mei-Wen Yang
- 2Department of Nurse, Nanchang University Hospital, Nanchang 330006, Jiangxi, China
| | - Fen-Fang Hong
- 3Department of Experimental Teaching Center, Nanchang University, Nanchang, China
| | - Shu-Long Yang
- 1Department of Physiology, College of Medicine, Nanchang University, Nanchang, China.,3Department of Experimental Teaching Center, Nanchang University, Nanchang, China
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20
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Chen Z, Xiong ZF, Liu X. Research progress on the interaction between circadian clock and early vascular aging. Exp Gerontol 2021; 146:111241. [PMID: 33453324 DOI: 10.1016/j.exger.2021.111241] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/05/2021] [Accepted: 01/06/2021] [Indexed: 12/15/2022]
Abstract
Considerable researches implicate that the circadian clock regulates the responsive rhythms of organs and sets the orderly aging process of cells indirectly. It influences an array of diverse biological process including intestinal flora, peripheral inflammatory responses, and redox homeostasis. People with sleep disoders and other kinds of circadian disruptions are prone to have vascular aging earlier. Meanwhile, those people are always faced with chronic vascular inflammation. It has not been elucidated that the specific mechanism of the interaction between the circadian system and early vascular aging. To explore the biphasic relationship between vascular aging and the circadian system, we summarize what is linking circadian clock with early vascular aging through four major prospect: inflammatory process, oxidative stress response, intestinal flora, and cellular senescence. Meanwhile, we discuss the hypothesis that the deterioration of circadian rhythms may exacerbate the process of early vascular aging, leading to the cardiovascular diseases. It will help us to provide new ideas for understanding the process of vascular aging and exploring the possible ways to design personalized chronotherapies.
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Affiliation(s)
- Zhuoying Chen
- Department of Geriatrics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430077, China
| | - Zhi-Fan Xiong
- Department of Gastroenterology, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430077, China
| | - Xiangjie Liu
- Department of Geriatrics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430077, China.
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21
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Zhuge W, Zhuge Q, Wang W, Lu X, You R, Liu L, Yu H, Wang J, Wang X, Ye Y, Ding S. Hydrogen sulphide ameliorates dopamine-induced astrocytic inflammation and neurodegeneration in minimal hepatic encephalopathy. J Cell Mol Med 2020; 24:13634-13647. [PMID: 33118312 PMCID: PMC7753993 DOI: 10.1111/jcmm.15728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 06/18/2020] [Accepted: 06/20/2020] [Indexed: 12/19/2022] Open
Abstract
It has been demonstrated that the action of dopamine (DA) could enhance the production of tumour necrosis factor‐α (TNF‐α) by astrocytes and potentiate neuronal apoptosis in minimal hepatic encephalopathy (MHE). Recently, sodium hydrosulfide (NaHS) has been found to have neuroprotective properties. Our study addressed whether NaHS could rescue DA‐challenged inflammation and apoptosis in neurons to ameliorate memory impairment in MHE rats and in the neuron and astrocyte coculture system. We found that NaHS suppressed DA‐induced p65 acetylation, resulting in reduced TNF‐α production in astrocytes both in vitro and in vivo. Furthermore, decreased apoptosis was observed in neurons exposed to conditioned medium from DA + NaHS‐challenged astrocytes, which was similar to the results obtained in the neurons exposed to TNF‐α + NaHS, suggesting a therapeutic effect of NaHS on the suppression of neuronal apoptosis via the reduction of TNF‐α level. DA triggered the inactivation of p70 S6 ribosomal kinase (S6K1) and dephosphorylation of Bad, resulting in the disaggregation of Bclxl and Bak and the release of cytochrome c (Cyt. c), and this process could be reversed by NaHS administration. Our work demonstrated that NaHS attenuated DA‐induced astrocytic TNF‐α release and ameliorated inflammation‐induced neuronal apoptosis in MHE. Further research into this approach may uncover future potential therapeutic strategies for MHE.
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Affiliation(s)
- Weishan Zhuge
- Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Qichuan Zhuge
- Neurosurgery Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Weikan Wang
- Department of Microbiology, Immunology, and Genetics, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Xiaoai Lu
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disease Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ruimin You
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disease Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Leping Liu
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disease Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - He Yu
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disease Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jian Wang
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disease Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Xuebao Wang
- Analytical and Testing Center, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yiru Ye
- School of Information and Engineering, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Saidan Ding
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disease Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
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22
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Xu W, Wong G, Hwang YY, Larbi A. The untwining of immunosenescence and aging. Semin Immunopathol 2020; 42:559-572. [PMID: 33165716 PMCID: PMC7665974 DOI: 10.1007/s00281-020-00824-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 10/19/2020] [Indexed: 02/08/2023]
Abstract
From a holistic point of view, aging results from the cumulative erosion of the various systems. Among these, the immune system is interconnected to the rest as immune cells are present in all organs and recirculate through bloodstream. Immunosenescence is the term used to define the remodelling of immune changes during aging. Because immune cells-and particularly lymphocytes-can further differentiate after their maturation in response to pathogen recognition, it is therefore unclear when senescence is induced in these cells. Additionally, it is also unclear which signals triggers senescence in immune cells (i) aging per se, (ii) specific response to pathogens, (iii) underlying conditions, or (iv) inflammaging. In this review, we will cover the current knowledge and concepts linked to immunosenescence and we focus this review on lymphocytes and T cells, which represent the typical model for replicative senescence. With the evidence presented, we propose to disentangle the senescence of immune cells from chronological aging.
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Affiliation(s)
- Weili Xu
- Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Immunos, Singapore, Singapore
| | - Glenn Wong
- Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Immunos, Singapore, Singapore
| | - You Yi Hwang
- Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Immunos, Singapore, Singapore
| | - Anis Larbi
- Singapore Immunology Network (SIgN), Agency for Science Technology and Research (A*STAR), Immunos, Singapore, Singapore.
- Department of Geriatrics, Faculty of Medicine, University of Sherbrooke, Sherbrooke, QC, J1K 2R1, Canada.
- Department of Microbiology and Immunology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 119228, Singapore.
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Huang H, Li Z, Ruan Y, Feng W, Chen J, Li X, Ouyang L, Huang H. Circadian rhythm disorder: a potential inducer of vascular calcification? J Physiol Biochem 2020; 76:513-524. [PMID: 32945991 DOI: 10.1007/s13105-020-00767-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 09/14/2020] [Indexed: 12/24/2022]
Abstract
Over the past decades, circadian rhythm has drawn a great attention in cardiovascular diseases. The expressions of rhythm genes fluctuate in accordance with the diurnal changes of vascular physiology, which highlights the pivotal effect of vascular clock. Recent researches show that the circadian clock can directly regulate the synthetic and secretory function of endothelial cells and phenotypic switch of vascular smooth muscle cells to adjust vascular relaxation and contraction. Importantly, dysfunction of vascular cells is involved in vascular calcification. Secretion of osteogenic cytokines and calcified vesicles in the vessel, osteogenic phenotype switch of vascular smooth muscle cells are all implicated in the calcification process. Moreover, circadian rhythm disorder can lead to abnormal hormone secretion, oxidative stress, inflammatory reaction, and autophagy, all of which should not be ignored in vascular calcification. Vascular senescence is another pathogenetic mechanism in vascular calcification. Accelerated vascular senescence may act as an important intermediate factor to promote vascular calcification in circadian rhythm disorders. In this review, we elaborate the potential effect of circadian rhythm disorder in vascular calcification and try to provide a new direction in the prevention of vascular calcification.
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Affiliation(s)
- Haoran Huang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
- Department of Pediatric Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhaohuai Li
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China
| | - Yuyi Ruan
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
- Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Weijing Feng
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Cardiology, Laboratory of Heart Center, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jie Chen
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaoxue Li
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
| | - Liu Ouyang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Department of Cardiology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Hui Huang
- Department of Cardiology, The Eighth Affiliated Hospital, Sun Yat-sen University, No. 3025, Shennan Middle Road, Futian District, Shenzhen, 518000, China.
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Maliszewska-Cyna E, Vecchio LM, Thomason LAM, Oore JJ, Steinman J, Joo IL, Dorr A, McLaurin J, Sled JG, Stefanovic B, Aubert I. The effects of voluntary running on cerebrovascular morphology and spatial short-term memory in a mouse model of amyloidosis. Neuroimage 2020; 222:117269. [PMID: 32818618 DOI: 10.1016/j.neuroimage.2020.117269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/06/2020] [Accepted: 08/10/2020] [Indexed: 12/27/2022] Open
Abstract
Physical activity has been correlated with a reduced risk of cognitive decline, including that associated with vascular dementia, mild cognitive impairment (MCI) and Alzheimer's disease (AD); recent literature suggests this may in part result from benefits to the cerebrovascular network. Using a transgenic (Tg) mouse model of AD, we evaluated the effect of running on cortical and hippocampal vascular morphology, cerebral amyloid angiopathy, amyloid plaque load, and spatial memory. TgCRND8 mice present with progressive amyloid pathology, advancing from the cortex to the hippocampus in a time-dependent manner. We postulated that the characteristic progression of pathology could lead to differential, time-dependent effects of physical activity on vascular morphology in these brain regions at 6 months of age. We used two-photon fluorescent microscopy and 3D vessel tracking to characterize vascular and amyloid pathology in sedentary TgCRND8 mice compared those who have a history of physical activity (unlimited access to a running wheel, from 3 to 6 months of age). In sedentary TgCRND8 mice, capillary density was found to be lower in the cortex and higher in the hippocampus compared to non-transgenic (nonTg) littermates. Capillary length, vessel branching, and non-capillary vessel tortuosity were also higher in the hippocampus of sedentary TgCRND8 compared to nonTg mice. Three months of voluntary running resulted in normalizing cortical and hippocampal microvascular morphology, with no significant difference between TgCRND8 and nonTg mice. The benefits of physical activity on cortical and hippocampal vasculature in 6-month old TgCRND8 mice were not paralleled by significant changes on parenchymal and cerebral amyloid pathology. Short-term spatial memory- as evaluated by performance in the Y-maze- was significantly improved in running compared to sedentary TgCRND8 mice. These results suggest that long-term voluntary running contributes to the maintenance of vascular morphology and spatial memory in TgCRND8 mice, even in the absence of an effect on amyloid pathology.
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Affiliation(s)
- Ewelina Maliszewska-Cyna
- Hurvitz Brain Sciences, Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, S112, Toronto, Ontario M4N 3M5, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, Toronto, Ontario M5S 1A8, Canada
| | - Laura M Vecchio
- Hurvitz Brain Sciences, Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, S112, Toronto, Ontario M4N 3M5, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, Toronto, Ontario M5S 1A8, Canada.
| | - Lynsie A M Thomason
- Hurvitz Brain Sciences, Physical Sciences, Sunnybrook Research Institute, Canada
| | - Jonathan J Oore
- Hurvitz Brain Sciences, Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, S112, Toronto, Ontario M4N 3M5, Canada
| | - Joe Steinman
- Mouse Imaging Centre, Hospital for Sick Children, Canada; Department of Medical Biophysics, University of Toronto, Canada
| | - Illsung Lewis Joo
- Hurvitz Brain Sciences, Physical Sciences, Sunnybrook Research Institute, Canada
| | - Adrienne Dorr
- Hurvitz Brain Sciences, Physical Sciences, Sunnybrook Research Institute, Canada
| | - JoAnne McLaurin
- Hurvitz Brain Sciences, Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, S112, Toronto, Ontario M4N 3M5, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, Toronto, Ontario M5S 1A8, Canada
| | - John G Sled
- Mouse Imaging Centre, Hospital for Sick Children, Canada; Department of Medical Biophysics, University of Toronto, Canada
| | - Bojana Stefanovic
- Hurvitz Brain Sciences, Physical Sciences, Sunnybrook Research Institute, Canada; Department of Medical Biophysics, University of Toronto, Canada
| | - Isabelle Aubert
- Hurvitz Brain Sciences, Biological Sciences, Sunnybrook Research Institute, 2075 Bayview Ave, S112, Toronto, Ontario M4N 3M5, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, 1 King's College Circle, Toronto, Ontario M5S 1A8, Canada
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Paul LA, Hystad P, Burnett RT, Kwong JC, Crouse DL, van Donkelaar A, Tu K, Lavigne E, Copes R, Martin RV, Chen H. Urban green space and the risks of dementia and stroke. ENVIRONMENTAL RESEARCH 2020; 186:109520. [PMID: 32344208 DOI: 10.1016/j.envres.2020.109520] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 03/16/2020] [Accepted: 04/10/2020] [Indexed: 05/11/2023]
Abstract
INTRODUCTION It is unknown whether urban green space is associated with reduced risk of major neurological conditions, especially dementia and stroke. METHODS Retrospective, population-based cohorts were created for each study outcome, including 1.7 and 4.3 million adults in Ontario, Canada for dementia and stroke, respectively. Residential green space was quantified using the satellite-derived Normalized Difference Vegetation Index. Incidence was ascertained using health administrative data with validated algorithms. Mixed-effects Cox models were used to estimate hazard ratios per interquartile range increase in green space exposure. RESULTS Between 2001 and 2013, 219,013 individuals were diagnosed with dementia and 89,958 had a stroke. The hazard ratio per interquartile range increase in green space was 0.97 (95% CI: 0.96-0.98) for dementia and 0.96 (0.95-0.98) for stroke. Estimates remained generally consistent in sensitivity analyses. DISCUSSION Increased exposure to urban green space was associated with reduced incidence of dementia and stroke. To our knowledge, this is the first population-based cohort study to assess these relationships.
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Affiliation(s)
- Lauren A Paul
- Department of Environmental and Occupational Health, Public Health Ontario, 480 University Ave. Suite 300, Toronto, ON, M5G 1V2, Canada.
| | - Perry Hystad
- College of Public Health and Human Sciences, Oregon State University, Women's Bldg, 160 SW 26th St., Corvallis, OR, 97331, USA.
| | - Richard T Burnett
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Finance Bldg, 101 Tunney's Pasture Drwy, Ottawa, ON, K1A 0K9, Canada.
| | - Jeffrey C Kwong
- Public Health Ontario Laboratories, Public Health Ontario, 661 University Ave. Suite 1701, Toronto, ON, M5G 1M1, Canada; ICES, 2075 Bayview Ave. G1 06, Toronto, ON, M4N 3M5, Canada; Dalla Lana School of Public Health, University of Toronto, 155 College St. Room 500, Toronto, ON, M5T 3M7, Canada; Department of Family and Community Medicine, University of Toronto, 500 University Ave. 5th Floor, Toronto, ON, M5G 1V7, Canada.
| | - Dan L Crouse
- Health Effects Institute, 75 Federal St. Suite 1400, Boston, MA, 02110-1817, USA.
| | - Aaron van Donkelaar
- Department of Physics and Atmospheric Science, Dalhousie University, Sir James Dunn Bldg, 6310 Coburg Rd., Halifax, NS, B3H 4J5, Canada.
| | - Karen Tu
- Dalla Lana School of Public Health, University of Toronto, 155 College St. Room 500, Toronto, ON, M5T 3M7, Canada; Department of Family and Community Medicine, University of Toronto, 500 University Ave. 5th Floor, Toronto, ON, M5G 1V7, Canada.
| | - Eric Lavigne
- Air Health Science Division, Health Canada, 269 Laurier Ave. W A.L. 4903B, Ottawa, ON, K1A 0K9, Canada; School of Epidemiology and Public Health, University of Ottawa, Alta Vista Campus, 600 Peter Morand Cres. Room 101, Ottawa, ON, K1G 5Z3, Canada.
| | - Ray Copes
- Department of Environmental and Occupational Health, Public Health Ontario, 480 University Ave. Suite 300, Toronto, ON, M5G 1V2, Canada; Dalla Lana School of Public Health, University of Toronto, 155 College St. Room 500, Toronto, ON, M5T 3M7, Canada.
| | - Randall V Martin
- Department of Physics and Atmospheric Science, Dalhousie University, Sir James Dunn Bldg, 6310 Coburg Rd., Halifax, NS, B3H 4J5, Canada.
| | - Hong Chen
- Department of Environmental and Occupational Health, Public Health Ontario, 480 University Ave. Suite 300, Toronto, ON, M5G 1V2, Canada; ICES, 2075 Bayview Ave. G1 06, Toronto, ON, M4N 3M5, Canada; Dalla Lana School of Public Health, University of Toronto, 155 College St. Room 500, Toronto, ON, M5T 3M7, Canada.
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Unveiling the Role of Inflammation and Oxidative Stress on Age-Related Cardiovascular Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1954398. [PMID: 32454933 PMCID: PMC7232723 DOI: 10.1155/2020/1954398] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/12/2020] [Accepted: 04/03/2020] [Indexed: 12/14/2022]
Abstract
The global population above 60 years has been growing exponentially in the last decades, which is accompanied by an increase in the prevalence of age-related chronic diseases, highlighting cardiovascular diseases (CVDs), such as hypertension, atherosclerosis, and heart failure. Aging is the main risk factor for these diseases. Such susceptibility to disease is explained, at least in part, by the increase of oxidative stress, in which it damages cellular components such as proteins, DNA, and lipids. In addition, the chronic inflammatory process in aging “inflammaging” also contributes to cell damage, creating a stressful environment which drives to the development of CVDs. Taken together, it is possible to identify the molecular connection between oxidative stress and the inflammatory process, especially by the crosstalk between the transcription factors Nrf-2 and NF-κB which are mediated by redox signalling and are involved in aging. Therapies that control this process are key targets in the prevention/combat of age-related CVDs. In this review, we show the basics of inflammation and oxidative stress, including the crosstalk between them, and the implications on age-related CVDs.
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Immune thrombotic thrombocytopenic purpura in older patients: prognosis and long-term survival. Blood 2020; 134:2209-2217. [PMID: 31530564 DOI: 10.1182/blood.2019000748] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 09/10/2019] [Indexed: 12/30/2022] Open
Abstract
Older age is associated with increased mortality in immune thrombotic thrombocytopenic purpura (iTTP). Yet, data are scarce regarding iTTP occurring among older patients. To assess clinical features and long-term impact of iTTP on mortality in older patients (>60 years old), characteristics and prognoses of adult iTTP patients enrolled in the French Reference Center for Thrombotic Microangiopathies registry between 2000 and 2016 were described according to age (<60 years old or ≥60 years old). Long-term mortality of iTTP older survivors was compared with that of non-iTTP geriatric subjects. Comparing, respectively, older iTTP patients (N = 71) with younger patients (N = 340), time from hospital admission to diagnosis was longer (P < .0001); at diagnosis, delirium (P = .034), behavior impairment (P = .045), renal involvement (P < .0001), and elevated troponin level (P = .025) were more important whereas cytopenias were less profound (platelet count, 22 × 103/mm3 [9-57] vs 13 × 103/mm3 [9-21], respectively [P = .002]; hemoglobin level, 9 g/dL [8-11] vs 8 g/dL [7-10], respectively [P = .0007]). Short- and mid-term mortalities were higher (P < .0001) and increased for every 10 years of age range. Age ≥60 years, cardiac involvement, increased plasma creatinine level, and total plasma exchange volume were independently associated with 1-month mortality. Compared with a non-iTTP geriatric population, older survivors showed an increased long-term mortality (hazard ratio = 3.44; P < .001). In conclusion, older iTTP patients have atypical neurological presentation delaying the diagnosis. Age negatively impacts short-term but also long-term mortality.
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Park SH, Kwon OS, Park SY, Weavil JC, Hydren JR, Reese V, Andtbacka RHI, Hyngstrom JR, Richardson RS. Vasodilatory and vascular mitochondrial respiratory function with advancing age: evidence of a free radically mediated link in the human vasculature. Am J Physiol Regul Integr Comp Physiol 2020; 318:R701-R711. [PMID: 32022597 DOI: 10.1152/ajpregu.00268.2019] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recognizing the age-related decline in skeletal muscle feed artery (SMFA) vasodilatory function, this study examined the link between vasodilatory and mitochondrial respiratory function in the human vasculature. Twenty-four SMFAs were harvested from young (35 ± 6 yr, n = 9) and old (71 ± 9 yr, n = 15) subjects. Vasodilation in SMFAs was assessed, by pressure myography, in response to flow-induced shear stress, acetylcholine (ACh), and sodium nitroprusside (SNP) while mitochondrial respiration was measured, by respirometry, in permeabilized SMFAs. Endothelium-dependent vasodilation was significantly attenuated in the old, induced by both flow (young: 92 ± 3, old: 45 ± 4%) and ACh (young: 92 ± 3, old: 54 ± 5%), with no significant difference in endothelium-independent vasodilation. Complex I and I + II state 3 respiration was significantly lower in the old (CI young: 10.1 ± 0.8, old: 7.0 ± 0.4 pmol·s-1·mg-1; CI + II young: 12.3 ± 0.6, old: 7.6 ± 0.4 pmol·s-1·mg-1). The respiratory control ratio (RCR) was also significantly attenuated in the old (young: 2.2 ± 0.1, old: 1.1 ± 0.1). Furthermore, state 3 (CI + II) and 4 respiration, as well as RCR, were significantly correlated (r = 0.49-0.86) with endothelium-dependent, but not endothelium-independent, function. Finally, the direct intervention with mitochondrial-targeted antioxidant (MitoQ) significantly improved endothelium-dependent vasodilation in the old but not in the young. Thus, the age-related decline in vasodilatory function is linked to attenuated vascular mitochondrial respiratory function, likely by augmented free radicals.NEW & NOTEWORTHY In human skeletal muscle feed arteries, the well-recognized age-related fall in endothelium-dependent vasodilatory function is strongly linked to a concomitant fall in vascular mitochondrial respiratory function. The direct intervention with the mitochondrial-targeted antioxidant restored vasodilatory function in the old but not in the young, supporting the concept that exacerbated mitochondrial-derived free radical production is linked to age-related vasodilatory dysfunction. Age-related vasodilatory dysfunction in humans is linked to attenuated vascular mitochondrial respiratory function, likely a consequence of augmented free radical production.
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Affiliation(s)
- Soung Hun Park
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans' Affairs Medical Center, Salt Lake City, Utah.,Department of Nutrition and Integrative Physiology, University of Utah Salt Lake City, Utah
| | - Oh Sung Kwon
- Department of Kinesiology, University of Connecticut, Storrs, Connecticut
| | - Song-Young Park
- School of Health and Kinesiology, University of Nebraska, Omaha, Nebraska
| | - Joshua C Weavil
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans' Affairs Medical Center, Salt Lake City, Utah.,Division of Geriatrics, Department of Internal Medicine, University of Utah, Salt Lake City, Utah
| | - Jay R Hydren
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans' Affairs Medical Center, Salt Lake City, Utah.,Department of Nutrition and Integrative Physiology, University of Utah Salt Lake City, Utah
| | - Van Reese
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans' Affairs Medical Center, Salt Lake City, Utah.,Division of Geriatrics, Department of Internal Medicine, University of Utah, Salt Lake City, Utah
| | - Robert H I Andtbacka
- Department of Surgery, Huntsman Cancer Hospital, University of Utah, Salt Lake City, Utah
| | - John R Hyngstrom
- Department of Surgery, Huntsman Cancer Hospital, University of Utah, Salt Lake City, Utah
| | - Russell S Richardson
- Geriatric Research, Education, and Clinical Center, George E. Whalen Veterans' Affairs Medical Center, Salt Lake City, Utah.,Department of Nutrition and Integrative Physiology, University of Utah Salt Lake City, Utah.,Division of Geriatrics, Department of Internal Medicine, University of Utah, Salt Lake City, Utah
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Alique M, Sánchez-López E, Bodega G, Giannarelli C, Carracedo J, Ramírez R. Hypoxia-Inducible Factor-1α: The Master Regulator of Endothelial Cell Senescence in Vascular Aging. Cells 2020; 9:cells9010195. [PMID: 31941032 PMCID: PMC7016968 DOI: 10.3390/cells9010195] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/07/2020] [Accepted: 01/11/2020] [Indexed: 12/11/2022] Open
Abstract
Aging is one of the hottest topics in biomedical research. Advances in research and medicine have helped to preserve human health, leading to an extension of life expectancy. However, the extension of life is an irreversible process that is accompanied by the development of aging-related conditions such as weakness, slower metabolism, and stiffness of vessels. It also debated that aging can be considered an actual disease with aging-derived comorbidities, including cancer or cardiovascular disease. Currently, cardiovascular disorders, including atherosclerosis, are considered as premature aging and represent the first causes of death in developed countries, accounting for 31% of annual deaths globally. Emerging evidence has identified hypoxia-inducible factor-1α as a critical transcription factor with an essential role in aging-related pathology, in particular, regulating cellular senescence associated with cardiovascular aging. In this review, we will focus on the regulation of senescence mediated by hypoxia-inducible factor-1α in age-related pathologies, with particular emphasis on the crosstalk between endothelial and vascular cells in age-associated atherosclerotic lesions. More specifically, we will focus on the characteristics and mechanisms by which cells within the vascular wall, including endothelial and vascular cells, achieve a senescent phenotype.
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Affiliation(s)
- Matilde Alique
- Departamento Biología de Sistemas, Facultad de Medicina y Ciencias de la Salud (IRYCIS), Universidad de Alcalá, Alcalá de Henares, 28805 Madrid, Spain;
- Correspondence: (M.A.); (J.C.); Tel.: +34-91-885-6436 (M.A.); +34-91-394-5005 (J.C.)
| | - Elsa Sánchez-López
- Departments of Pharmacology and Pathology, University of California San Diego, La Jolla, CA 92037, USA;
| | - Guillermo Bodega
- Departamento de Biomedicina y Biotecnología, Facultad de Biología, Química y Ciencias Ambientales, Universidad de Alcalá, Alcalá de Henares, 28805 Madrid, Spain;
| | - Chiara Giannarelli
- Cardiovascular Research Center, Institute for Genomics and Multiscale Biology, New York, NY 10029, USA;
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Julia Carracedo
- Departamento de Genética, Fisiología y Microbiología, Facultad de Biología, Universidad Complutense de Madrid, 28040 Madrid, Spain
- Instituto de Investigación Sanitaria Hospital 12 de Octubre (i+12), 28041 Madrid, Spain
- Correspondence: (M.A.); (J.C.); Tel.: +34-91-885-6436 (M.A.); +34-91-394-5005 (J.C.)
| | - Rafael Ramírez
- Departamento Biología de Sistemas, Facultad de Medicina y Ciencias de la Salud (IRYCIS), Universidad de Alcalá, Alcalá de Henares, 28805 Madrid, Spain;
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New Insights for Cellular and Molecular Mechanisms of Aging and Aging-Related Diseases: Herbal Medicine as Potential Therapeutic Approach. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4598167. [PMID: 31915506 PMCID: PMC6930799 DOI: 10.1155/2019/4598167] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Revised: 09/28/2019] [Accepted: 10/16/2019] [Indexed: 02/07/2023]
Abstract
Aging is a progressive disease affecting around 900 million people worldwide, and in recent years, the mechanism of aging and aging-related diseases has been well studied. Treatments for aging-related diseases have also made progress. For the long-term treatment of aging-related diseases, herbal medicine is particularly suitable for drug discovery. In this review, we discuss cellular and molecular mechanisms of aging and aging-related diseases, including oxidative stress, inflammatory response, autophagy and exosome interactions, mitochondrial injury, and telomerase damage, and summarize commonly used herbals and compounds concerned with the development of aging-related diseases, including Ginkgo biloba, ginseng, Panax notoginseng, Radix astragali, Lycium barbarum, Rhodiola rosea, Angelica sinensis, Ligusticum chuanxiong, resveratrol, curcumin, and flavonoids. We also summarize key randomized controlled trials of herbal medicine for aging-related diseases during the past ten years. Adverse reactions of herbs were also described. It is expected to provide new insights for slowing aging and treating aging-related diseases with herbal medicine.
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Kleefeldt F, Bömmel H, Broede B, Thomsen M, Pfeiffer V, Wörsdörfer P, Karnati S, Wagner N, Rueckschloss U, Ergün S. Aging-related carcinoembryonic antigen-related cell adhesion molecule 1 signaling promotes vascular dysfunction. Aging Cell 2019; 18:e13025. [PMID: 31389127 PMCID: PMC6826129 DOI: 10.1111/acel.13025] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 06/03/2019] [Accepted: 06/23/2019] [Indexed: 01/03/2023] Open
Abstract
Aging is an independent risk factor for cardiovascular diseases and therefore of particular interest for the prevention of cardiovascular events. However, the mechanisms underlying vascular aging are not well understood. Since carcinoembryonic antigen‐related cell adhesion molecule 1 (CEACAM1) is crucially involved in vascular homeostasis, we sought to identify the role of CEACAM1 in vascular aging. Using human internal thoracic artery and murine aorta, we show that CEACAM1 is upregulated in the course of vascular aging. Further analyses demonstrated that TNF‐α is CEACAM1‐dependently upregulated in the aging vasculature. Vice versa, TNF‐α induces CEACAM1 expression. This results in a feed‐forward loop in the aging vasculature that maintains a chronic pro‐inflammatory milieu. Furthermore, we demonstrate that age‐associated vascular alterations, that is, increased oxidative stress and vascular fibrosis, due to increased medial collagen deposition crucially depend on the presence of CEACAM1. Additionally, age‐dependent upregulation of vascular CEACAM1 expression contributes to endothelial barrier impairment, putatively via increased VEGF/VEGFR‐2 signaling. Consequently, aging‐related upregulation of vascular CEACAM1 expression results in endothelial dysfunction that may promote atherosclerotic plaque formation in the presence of additional risk factors. Our data suggest that CEACAM1 might represent an attractive target in order to delay physiological aging and therefore the transition to vascular disorders such as atherosclerosis.
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Affiliation(s)
- Florian Kleefeldt
- Institute of Anatomy and Cell Biology Julius‐Maximilians‐University Würzburg Würzburg Germany
| | - Heike Bömmel
- Institute of Anatomy and Cell Biology Julius‐Maximilians‐University Würzburg Würzburg Germany
| | - Britta Broede
- Leonardo Hirslanden Clinic Birshof Münchenstein Switzerland
| | | | - Verena Pfeiffer
- Institute of Anatomy and Cell Biology Julius‐Maximilians‐University Würzburg Würzburg Germany
| | - Philipp Wörsdörfer
- Institute of Anatomy and Cell Biology Julius‐Maximilians‐University Würzburg Würzburg Germany
| | - Srikanth Karnati
- Institute of Anatomy and Cell Biology Julius‐Maximilians‐University Würzburg Würzburg Germany
| | - Nicole Wagner
- Institute of Anatomy and Cell Biology Julius‐Maximilians‐University Würzburg Würzburg Germany
| | - Uwe Rueckschloss
- Institute of Anatomy and Cell Biology Julius‐Maximilians‐University Würzburg Würzburg Germany
| | - Süleyman Ergün
- Institute of Anatomy and Cell Biology Julius‐Maximilians‐University Würzburg Würzburg Germany
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Wu K, Huang D, Zhu C, Kasanga EA, Zhang Y, Yu E, Zhang H, Ni Z, Ye S, Zhang C, Hu J, Zhuge Q, Yang J. NT3 P75-2 gene-modified bone mesenchymal stem cells improve neurological function recovery in mouse TBI model. Stem Cell Res Ther 2019; 10:311. [PMID: 31651375 PMCID: PMC6814101 DOI: 10.1186/s13287-019-1428-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/07/2019] [Accepted: 09/24/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The attainment of extensive neurological function recovery remains the key challenge for the treatment of traumatic brain injury (TBI). Transplantation of bone marrow-derived mesenchymal stem cells (BMSCs) has been shown to improve neurological function recovery after TBI. However, the survival of BMSCs after transplantation in early-stage TBI is limited, and much is unknown about the mechanisms mediating this neurological function recovery. Secretion of neurotrophic factors, including neurotrophin 3 (NT3), is one of the critical factors mediating BMSC neurological function recovery. Gene mutation of NT3 (NT3P75-2) has been shown to enhance the biological function of NT3 via the reduction of the activation of the P75 signal pathway. Thus, we investigated whether NT3P75-2 gene-modified BMSCs could enhance the survival of BMSCs and further improve neurological function recovery after TBI. METHODS The ability of NT3P75-2 induction to improve cell growth rate of NSC-34 and PC12 cells in vitro was first determined. BMSCs were then infected with three different lentiviruses (green fluorescent protein (GFP), GFP-NT3, or GFP-NT3P75-2), which stably express GFP, GFP-NT3, or GFP-NT3P75-2. At 24 h post-TBI induction in mice, GFP-labeled BMSCs were locally transplanted into the lesion site. Immunofluorescence and histopathology were performed at 1, 3, and/or 7 days after transplantation to evaluate the survival of BMSCs as well as the lesion volume. A modified neurological severity scoring system and the rotarod test were chosen to evaluate the functional recovery of the mice. Cell growth rate, glial activation, and signaling pathway analyses were performed to determine the potential mechanisms of NT3P75-2 in functional recovery after TBI. RESULTS Overall, NT3P75-2 improved cell growth rate of NSC-34 and PC12 cells in vitro. In addition, NT3P75-2 significantly improved the survival of transplanted BMSCs and neurological function recovery after TBI. Overexpression of NT3P75-2 led to a significant reduction in the activation of glial cells, brain water content, and brain lesion volume after TBI. This was associated with a reduced activation of the p75 neurotrophin receptor (P75NTR) and the c-Jun N-terminal kinase (JNK) signal pathway due to the low affinity of NT3P75-2 for the receptor. CONCLUSIONS Taken together, our results demonstrate that administration of NT3P75-2 gene-modified BMSCs dramatically improves neurological function recovery after TBI by increasing the survival of BMSCs and ameliorating the inflammatory environment, providing a new promising treatment strategy for TBI.
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Affiliation(s)
- Ke Wu
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Dongdong Huang
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Can Zhu
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Ella A Kasanga
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA
| | - Ying Zhang
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Enxing Yu
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Hengli Zhang
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Zhihui Ni
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Sheng Ye
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Chunli Zhang
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Jiangnan Hu
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China. .,Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA.
| | - Qichuan Zhuge
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
| | - Jianjing Yang
- Department of Neurosurgery, Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China. .,Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA.
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Inhibition of miR-497 improves functional outcome after ischemic stroke by enhancing neuronal autophagy in young and aged rats. Neurochem Int 2019; 127:64-72. [DOI: 10.1016/j.neuint.2019.01.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/04/2019] [Accepted: 01/07/2019] [Indexed: 12/17/2022]
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Vascular smooth muscle cell senescence and age-related diseases: State of the art. Biochim Biophys Acta Mol Basis Dis 2019; 1865:1810-1821. [DOI: 10.1016/j.bbadis.2018.08.015] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/20/2018] [Accepted: 08/13/2018] [Indexed: 02/07/2023]
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Mamtilahun M, Tang G, Zhang Z, Wang Y, Tang Y, Yang GY. Targeting Water in the Brain: Role of Aquaporin-4 in Ischemic Brain Edema. Curr Drug Targets 2019; 20:748-755. [DOI: 10.2174/1389450120666190214115309] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 01/20/2019] [Accepted: 01/22/2019] [Indexed: 01/21/2023]
Abstract
Brain edema primarily occurs as a consequence of various cerebral injuries including
ischemic stroke. Excessive accumulation of brain water content causes a gradual expansion of brain
parenchyma, decreased blood flow and increased intracranial pressure and, ultimately, cerebral herniation
and death. Current clinical treatment for ischemic edema is very limited, therefore, it is urgent to
develop novel treatment strategies. Mounting evidence has demonstrated that AQP4, a water channel
protein, is closely correlated with brain edema and could be an optimal therapeutic target for the reduction
of ischemic brain edema. AQP4 is prevalently distributed in the central nervous system, and
mainly regulates water flux in brain cells under normal and pathological conditions. This review focuses
on the underlying mechanisms of AQP4 related to its dual role in edema formation and elimination.
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Affiliation(s)
- Muyassar Mamtilahun
- Neuroscience and Neuroengineering Research Center, Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Guanghui Tang
- Institute of Molecular Health Sciences, ETH Zurich, 8093 Zurich, Switzerland
| | - Zhijun Zhang
- Neuroscience and Neuroengineering Research Center, Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yongting Wang
- Neuroscience and Neuroengineering Research Center, Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yaohui Tang
- Neuroscience and Neuroengineering Research Center, Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Guo-Yuan Yang
- Neuroscience and Neuroengineering Research Center, Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
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Uddin MS, Kabir MT, Jakaria M, Mamun AA, Niaz K, Amran MS, Barreto GE, Ashraf GM. Endothelial PPARγ Is Crucial for Averting Age-Related Vascular Dysfunction by Stalling Oxidative Stress and ROCK. Neurotox Res 2019; 36:583-601. [PMID: 31055770 DOI: 10.1007/s12640-019-00047-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/01/2019] [Accepted: 04/11/2019] [Indexed: 02/07/2023]
Abstract
Aging plays a significant role in the progression of vascular diseases and vascular dysfunction. Activation of the ADP-ribosylation factor 6 and small GTPases by inflammatory signals may cause vascular permeability and endothelial leakage. Pro-inflammatory molecules have a significant effect on smooth muscle cells (SMC). The migration and proliferation of SMC can be promoted by tumor necrosis factor alpha (TNF-α). TNF-α can also increase oxidative stress in SMCs, which has been identified to persuade DNA damage resulting in apoptosis and cellular senescence. Peroxisome proliferator-activated receptor (PPAR) acts as a ligand-dependent transcription factor and a member of the nuclear receptor superfamily. They play key roles in a wide range of biological processes, including cell differentiation and proliferation, bone formation, cell metabolism, tissue remodeling, insulin sensitivity, and eicosanoid signaling. The PPARγ activation regulates inflammatory responses, which can exert protective effects in the vasculature. In addition, loss of function of PPARγ enhances cardiovascular events and atherosclerosis in the vascular endothelium. This appraisal, therefore, discusses the critical linkage of PPARγ in the inflammatory process and highlights a crucial defensive role for endothelial PPARγ in vascular dysfunction and disease, as well as therapy for vascular aging.
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Affiliation(s)
- Md Sahab Uddin
- Department of Pharmacy, Southeast University, Dhaka, Bangladesh.
| | | | - Md Jakaria
- Department of Applied Life Sciences, Graduate School, Konkuk University, Chungju, South Korea
| | | | - Kamal Niaz
- Department of Pharmacology and Toxicology, Faculty of Bio-Sciences, Cholistan University of Veterinary and Animal Sciences, Bahawalpur, Pakistan
| | - Md Shah Amran
- Department of Pharmaceutical Chemistry, University of Dhaka, Dhaka, Bangladesh
| | - George E Barreto
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, DC, Colombia.,Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Santiago, Chile
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia. .,Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.
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Miao H, Yang Y, Wang H, Huo L, Wang M, Zhou Y, Hua Y, Ren M, Ren C, Ji X, Yang Q, Guo X. Intensive Lipid-Lowering Therapy Ameliorates Asymptomatic Intracranial Atherosclerosis. Aging Dis 2019; 10:258-266. [PMID: 31011477 PMCID: PMC6457052 DOI: 10.14336/ad.2018.0526] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 05/26/2018] [Indexed: 12/31/2022] Open
Abstract
Statins have proven to exert protective effects in patients with symptomatic intracranial atherosclerotic stenosis (SICAS). It is unclear whether intensive lipid-lowering therapy (ILLT) can ameliorate atherosclerosis in asymptomatic ICAS (AICAS). A single-center, prospective cohort study was performed in 71 AICAS patients with lipid-lowering therapy. Vascular stenoses were evaluated with transcranial color-coded sonography (TCCS) before and after statin treatment. With target therapeutic level of low-density lipoprotein cholesterol (LDL-C) ≤ 1.8 mmol/L or ≥ 50% reduction from baseline after the two years of follow-up, patients were divided into intensive statin treatment (IST) group and standard statin treatment (SST) group. A total of 104 stenotic intracranial arteries were detected in 51 patients belonging to the IST group and 47 arteries in 20 patients of the SST group. In the first year, LDL-C levels were significantly decreased in the IST compared with SST groups (1.48 ± 0.26 vs. 2.20 ± 0.58, P=0.000). However, the ratio of regressed ICAS in IST was not significantly higher than that in SST (26.3% vs. 5.9%, P=0.052). Forty-nine branches in 25 patients of the IST group and 16 branches in 7 patients of the SST group were followed up for two years. The LDL-C level was decreased in the IST compared with SST groups (1.55 ± 0.29 vs. 2.36 ± 0.77, P=0.048). The ratio of regressed ICAS in the IST group was significantly higher than that in SST group (34.7% vs. 6.3%, P=0.017). We concluded that the degree of stenosis in AICAS can be ameliorated with intensive lipid-lowering therapy within two years; target LDL-C level can be reached by moderate-intensity statin treatment for Chinese AICAS patients.
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Affiliation(s)
- Huijuan Miao
- 1Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yujiao Yang
- 2Department of Neurology, Sanbo Brain Hospital, Beijing, China
| | - Han Wang
- 3Department of Neurology, Huimin Hospital, Beijing, China
| | - Linyu Huo
- 4Department of Neurology, Haidian Hospital, Beijing, China
| | - Mengnan Wang
- 1Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yinghua Zhou
- 5Department of Ultrasonography, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Yang Hua
- 5Department of Ultrasonography, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Ming Ren
- 1Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Changhong Ren
- 6Laboratory of Hypoxia, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xunming Ji
- 7Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Qi Yang
- 8Department of Radiology, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Xiuhai Guo
- 1Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, China
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Hu J, Chen L, Huang X, Wu K, Ding S, Wang W, Wang B, Smith C, Ren C, Ni H, ZhuGe Q, Yang J. Calpain inhibitor MDL28170 improves the transplantation-mediated therapeutic effect of bone marrow-derived mesenchymal stem cells following traumatic brain injury. Stem Cell Res Ther 2019; 10:96. [PMID: 30876457 PMCID: PMC6420775 DOI: 10.1186/s13287-019-1210-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 01/16/2019] [Accepted: 03/06/2019] [Indexed: 01/14/2023] Open
Abstract
Background Studies have shown that transplantation of bone marrow-derived mesenchymal stem cells (BMSCs) protects against brain damage. However, the low survival number of transplanted BMSCs remains a pertinent challenge and can be attributed to the unfavorable microenvironment of the injured brain. It is well known that calpain activation plays a critical role in traumatic brain injury (TBI)-mediated inflammation and cell death; previous studies showed that inhibiting calpain activation is neuroprotective after TBI. Thus, we investigated whether preconditioning with the calpain inhibitor, MDL28170, could enhance the survival of BMSCs transplanted at 24 h post TBI to improve neurological function. Methods TBI rat model was induced by the weight-drop method, using the gravitational forces of a free falling weight to produce a focal brain injury. MDL28170 was injected intracranially at the lesion site at 30 min post TBI, and the secretion levels of neuroinflammatory factors were assessed 24 h later. BMSCs labeled with green fluorescent protein (GFP) were locally administrated into the lesion site of TBI rat brains at 24 h post TBI. Immunofluorescence and histopathology were performed to evaluate the BMSC survival and the TBI lesion volume. Modified neurological severity scores were chosen to evaluate the functional recovery. The potential mechanisms by which MDL28170 is involved in the regulation of inflammation signaling pathway and cell apoptosis were determined by western blot and immunofluorescence staining. Results Overall, we found that a single dose of MDL28170 at acute phase of TBI improved the microenvironment by inhibiting the inflammation, facilitated the survival of grafted GFP-BMSCs, and reduced the grafted cell apoptosis, leading to the reduction of lesion cavity. Furthermore, a significant neurological function improvement was observed when BMSCs were transplanted into a MDL28170-preconditioned TBI brains compared with the one without MDL28170-precondition group. Conclusions Taken together, our data suggest that MDL28170 improves BMSC transplantation microenvironment and enhances the neurological function restoration after TBI via increased survival rate of BMSCs. We suggest that the calpain inhibitor, MDL28170, could be pursued as a new combination therapeutic strategy to advance the effects of transplanted BMSCs in cell-based regenerative medicine. Electronic supplementary material The online version of this article (10.1186/s13287-019-1210-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jiangnan Hu
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China. .,Department of Pharmaceutical Sciences, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA.
| | - Lefu Chen
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Xujun Huang
- Department of Intensive Care Unit (ICU), Hengdian Wenrong Hospital, Jinhua, 322100, China
| | - Ke Wu
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Saidan Ding
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Weikan Wang
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA
| | - Brian Wang
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA
| | - Charity Smith
- Department of Pharmaceutical Sciences, University of North Texas Health Science Center, Fort Worth, TX, 76107, USA
| | - Changhong Ren
- Beijing Key Laboratory of Hypoxic Conditioning Translational Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Haoqi Ni
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Qichuan ZhuGe
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
| | - Jianjing Yang
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China.
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Zhao Y, Dong Y, Wang J, Sheng L, Chai Q, Zhang H, Liu Z. Longitudinal association of carotid endothelial shear stress with renal function decline in aging adults with normal renal function: A population-based cohort study. Sci Rep 2019; 9:2051. [PMID: 30765747 PMCID: PMC6376032 DOI: 10.1038/s41598-018-38470-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 12/27/2018] [Indexed: 02/07/2023] Open
Abstract
The aim of this study was to investigate the associations between carotid wall shear stress (WSS) and renal function impairment (RFI) and albuminuria in aging adults. A total of 1,447 subjects aged 60 years and older with normal estimated glomerular filtration rate (eGFR ≥ 60 mL·min-1·1.72 m-2) and albumin/creatinine ratio (ACR < 30 mg·g-1) were enrolled between April 2007 and October 2009 in the Shandong area, China. Carotid WSS was assessed at baseline, and eGFR, which is based on serum creatinine and cystatin C, and ACR were assessed at baseline and at the annual follow-up visits. After an average of 62.9 months of follow-up, the reduction in eGFR and the increase in ACR were significantly higher in the Q1+2+3 group than the Q4 group, as classified by either the interquartile of the mean WSS or the interquartile of the peak WSS after adjustment for multi-variabilities, including the average blood pressures at every annual visit and baseline eGFR and ACR. For groups classified by mean WSS, the hazard ratios (95% confidence intervals) were 3.45 (1.36-8.75, p = 0.008) in the incident RFI and 3.24 3.22 (1.37-7.57, p = 0.009) in the incident albuminuria for the Q1+2+3 group compared with the Q4 group. Similar results were observed among groups classified by peak WSS. The Q1+2+3 group was associated with endothelial dysfunction and inflammation with respect to the Q4 group as classified by mean or peak WSS. The results indicate that carotid WSS plays an important role in RFI and albuminuria progression in aging adults. Lower WSS was associated with a higher risk of RFI and albuminuria compared with higher WSS.
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Affiliation(s)
- Yingxin Zhao
- Cardio-Cerebrovascular Control and Research Center, Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, Shandong, 250062, China
| | - Yuanli Dong
- Department of Community, Lanshan District People Hospital, Linyi, Shandong, 276002, China
| | - Juan Wang
- Department of Cardiology, The Second Hospital of Shandong University, Jinan, Shandong, 250000, China
| | - Lin Sheng
- Department of Cardiology, The Second Hospital of Shandong University, Jinan, Shandong, 250000, China
| | - Qiang Chai
- Cardio-Cerebrovascular Control and Research Center, Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, Shandong, 250062, China
| | - Hua Zhang
- Cardio-Cerebrovascular Control and Research Center, Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, Shandong, 250062, China
| | - Zhendong Liu
- Cardio-Cerebrovascular Control and Research Center, Institute of Basic Medicine, Shandong Academy of Medical Sciences, Jinan, Shandong, 250062, China.
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Palygin O, Miller BS, Nishijima Y, Zhang DX, Staruschenko A, Sorokin A. Endothelin receptor A and p66Shc regulate spontaneous Ca 2+ oscillations in smooth muscle cells controlling renal arterial spontaneous motion. FASEB J 2018; 33:2636-2645. [PMID: 30303741 DOI: 10.1096/fj.201800776rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Adaptor protein p66Shc is overexpressed in smooth muscle cells of renal resistance vessels of hypertensive salt-sensitive rats and is involved in the regulation of renal vascular tone. We applied 2-photon laser scanning fluorescence microscopy to analyze spontaneous dynamic fluctuations in intracellular calcium concentrations ([Ca2+]i) in smooth muscle cells embedded in the walls of freshly isolated renal resistance arteries. The amplitude, number of events, and frequency of spontaneous [Ca2+]i oscillations triggered by endogenously released endothelin-1 were recorded in smooth muscle cells of the renal arteries. Endothelin receptor A antagonist BQ123 dramatically reduced the amplitude and frequency of spontaneous Ca2+ events, producing marked inhibition of renal vessels spontaneous motion. Spontaneous Ca2+ fluctuations in smooth muscle cells of p66Shc knockout (p66ShcKO) rats had significantly higher amplitude than in control rats. The frequency of spontaneous [Ca2+]i oscillations did not change in p66ShcKO rats, suggesting that p66Shc expression did not affect endothelin-1 release from resident endothelial cells. Acute application of endothelin-1 revealed significantly elevated production of the total [Ca2+]i in p66ShcKO rats. Spontaneous cytosolic Ca2+ oscillations in smooth muscle cells of renal vessels mediate their spontaneous motion via the endothelin-1/endothelin receptor A pathway. p66Shc decreases the amplitude of individual changes in [Ca2+]i, which mitigates the spontaneous motion of renal vessels.-Palygin, O., Miller, B. S., Nishijima, Y., Zhang, D. X., Staruschenko, A., Sorokin, A. Endothelin receptor A and p66Shc regulate spontaneous Ca2+ oscillations in smooth muscle cells controlling renal arterial spontaneous motion.
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Affiliation(s)
- Oleg Palygin
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Bradley S Miller
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Division of Nephrology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Yoshinori Nishijima
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Division of Cardiology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, USA; and.,Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - David X Zhang
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Division of Cardiology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, USA; and.,Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Alexander Staruschenko
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Andrey Sorokin
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, USA.,Division of Nephrology, Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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Hu J, Huang S, Zhu L, Huang W, Zhao Y, Jin K, ZhuGe Q. Tissue Plasminogen Activator-Porous Magnetic Microrods for Targeted Thrombolytic Therapy after Ischemic Stroke. ACS APPLIED MATERIALS & INTERFACES 2018; 10:32988-32997. [PMID: 30192506 DOI: 10.1021/acsami.8b09423] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Tissue plasminogen activator (tPA) is the only FDA approved thrombolytic drug for acute ischemic stroke but concerns regarding its limitations remain. Here, we developed a new strategy by incorporating tPA into porous magnetic iron oxide (Fe3O4)-microrods (tPA-MRs) for targeted thrombolytic therapy in ischemic stroke induced by distal middle cerebral artery occlusion. We showed that intra-arterial injection of tPA-MRs could target the cerebral blood clot in vivo under the guidance of an external magnet, where tPA was subsequently released at the site of embolism. When applied with an external rotating magnetic field, rotating tPA-MRs significantly improved not only the mass transport of the tPA-clot reaction, but also mechanically disrupted the clot network, which thus increased clot interaction and penetration of tPA. Importantly, intravenously injected MRs could be discharged from the kidney, and the function of liver and kidney were not damaged at different durations after administration of tPA-MRs. Our data suggest that tPA-MRs overcome the limitations of thrombolytic therapy with tPA alone, which may be not only just for the treatment of ischemic stroke but also have majorly impact on other thrombotic diseases.
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Affiliation(s)
- Jiangnan Hu
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Department of Neurosurgery , The First Affiliated Hospital of Wenzhou Medical University , Wenzhou 325000 , China
- Department of Pharmacology and Neuroscience , University of North Texas Health Science Center , Fort Worth , Texas 76107 , United States
| | - Shengwei Huang
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Department of Neurosurgery , The First Affiliated Hospital of Wenzhou Medical University , Wenzhou 325000 , China
| | - Lu Zhu
- College of Engineering , University of Georgia , Athens , Georgia 30602 , United States
| | - Weijie Huang
- Department of Physics and Astronomy , University of Georgia , Athens , Georgia 30602 , United States
| | - Yiping Zhao
- Department of Physics and Astronomy , University of Georgia , Athens , Georgia 30602 , United States
| | - Kunlin Jin
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Department of Neurosurgery , The First Affiliated Hospital of Wenzhou Medical University , Wenzhou 325000 , China
- Department of Pharmacology and Neuroscience , University of North Texas Health Science Center , Fort Worth , Texas 76107 , United States
- Beijing Key Laboratory of Hypoxic Conditioning Translational Medicine , Xuanwu Hospital , Capital Medical University , Beijing , 100053 , China
| | - Qichuan ZhuGe
- Zhejiang Provincial Key Laboratory of Aging and Neurological Disorder Research, Department of Neurosurgery , The First Affiliated Hospital of Wenzhou Medical University , Wenzhou 325000 , China
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Ren C, Li N, Li S, Han R, Huang Q, Hu J, Jin K, Ji X. Limb Ischemic Conditioning Improved Cognitive Deficits via eNOS-Dependent Augmentation of Angiogenesis after Chronic Cerebral Hypoperfusion in Rats. Aging Dis 2018; 9:869-879. [PMID: 30271664 PMCID: PMC6147592 DOI: 10.14336/ad.2017.1106] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 11/06/2017] [Indexed: 12/27/2022] Open
Abstract
Intracranial and extracranial arterial stenosis, the primary cause of chronic cerebral hypoperfusion (CCH), is a critical reason for the pathogenesis of vascular dementia and Alzheimer’s disease characterized by cognitive impairments. Our previous study demonstrated that limb remote ischemic conditioning (LRIC) improved cerebral perfusion in intracranial arterial stenosis patients. The current study aimed to test whether LRIC promotes angiogenesis and increases phosphorylated endothelial nitric oxide synthase (p-eNOS) activity in CCH rat model. Adult male Sprague-Dawley rats were randomly assigned to three different groups: sham group, bilateral carotid artery occlusion (2VO) group and 2VO+LRIC group. Cerebral Blood Flow (CBF) was measured with laser speckle contrast imager at 4 weeks. Cognitive testing was performed at four and six weeks after 2VO surgery. We demonstrated that LRIC treatment increased cerebral perfusion and improved the CCH induced spatial learning and memory impairment. Immunohistochemistry confirmed that LRIC prevented cell death in the CA1 region, and increased the number of vessels and angiogenesis in the hippocampus after 2VO. Western blot analysis shows that LRIC therapy significantly increased p-eNOS expression in the hippocampus when compared with 2VO rats. Moreover, eNOS inhibitor reduced the effect of LRIC on angiogenesis in the hippocampus and spatial learning and memory function. Our data suggested that LRIC promoted angiogenesis, which is mediated, in part, by eNOS/NO.
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Affiliation(s)
- Changhong Ren
- 1Institute of Hypoxia Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,2Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, TX Texas 76107, USA.,3Center of Stroke, Beijing Institute for Brain Disorder, Beijing 100069, China.,4Beijing Key Laboratory of Hypoxia Translational Medicine, Beijing 100053, China
| | - Ning Li
- 1Institute of Hypoxia Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,5Department of Neurobiology, Capital Medical University, Beijing 10069, China
| | - Sijie Li
- 1Institute of Hypoxia Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,4Beijing Key Laboratory of Hypoxia Translational Medicine, Beijing 100053, China
| | - Rongrong Han
- 1Institute of Hypoxia Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,4Beijing Key Laboratory of Hypoxia Translational Medicine, Beijing 100053, China
| | - Qingjian Huang
- 1Institute of Hypoxia Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,2Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, TX Texas 76107, USA.,4Beijing Key Laboratory of Hypoxia Translational Medicine, Beijing 100053, China
| | - Jiangnan Hu
- 2Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, TX Texas 76107, USA
| | - Kunlin Jin
- 2Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, TX Texas 76107, USA
| | - Xunming Ji
- 1Institute of Hypoxia Medicine, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.,3Center of Stroke, Beijing Institute for Brain Disorder, Beijing 100069, China.,4Beijing Key Laboratory of Hypoxia Translational Medicine, Beijing 100053, China
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Park SH, Kwon OS, Park SY, Weavil JC, Andtbacka RHI, Hyngstrom JR, Reese V, Richardson RS. Vascular mitochondrial respiratory function: the impact of advancing age. Am J Physiol Heart Circ Physiol 2018; 315:H1660-H1669. [PMID: 30192630 DOI: 10.1152/ajpheart.00324.2018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Little is known about vascular mitochondrial respiratory function and the impact of age. Therefore, skeletal muscle feed arteries were harvested from young (33 ± 7 yr, n = 10), middle-aged (54 ± 5 yr, n = 10), and old (70 ± 7 yr, n = 10) subjects, and mitochondrial respiration as well as citrate synthase (CS) activity were assessed. Complex I (CI) and complex I + II (CI+II) state 3 respiration were greater in young (CI: 10.4 ± 0.8 pmol·s-1·mg-1 and CI+II: 12.4 ± 0.8 pmol·s-1·mg-1, P < 0.05) than middle-aged (CI: 7 ± 0.6 pmol·s-1·mg-1 and CI+II: 8.3 ± 0.5 pmol·s-1·mg-1) and old (CI: 7.2 ± 0.4 pmol·s-1·mg-1 and CI+II: 7.6 ± 0.5 pmol·s-1·mg-1) subjects and, as in the case of complex II (CII) state 3 respiration, were inversely correlated with age [ r = -0.56 (CI), r = -0.7 (CI+II), and r = 0.4 (CII), P < 0.05]. In contrast, state 4 respiration and mitochondria-specific superoxide levels were not different across groups. The respiratory control ratio was greater in young (2.2 ± 0.2, P < 0.05) than middle-aged and old (1.4 ± 0.1 and 1.1 ± 0.1, respectively) subjects and inversely correlated with age ( r = -0.71, P < 0.05). As CS activity was inversely correlated with age ( r = -0.54, P < 0.05), when normalized for mitochondrial content, the age-related differences and relationships with state 3 respiration were ablated. In contrast, mitochondrion-specific state 4 respiration was now lower in young (15 ± 1.4 pmol·s-1·mg-1·U CS-1, P < 0.05) than middle-aged and old (23.4 ± 3.6 and 27.9 ± 3.4 pmol·s-1·mg-1·U CS-1, respectively) subjects and correlated with age ( r = 0.46, P < 0.05). Similarly, superoxide/CS levels were lower in young (0.07 ± 0.01) than old (0.19 ± 0.41) subjects and correlated with age ( r = 0.44, P < 0.05). Therefore, with aging, vascular mitochondrial respiratory function declines, predominantly as a consequence of falling mitochondrial content. However, per mitochondrion, aging likely results in greater mitochondrion-derived oxidative stress, which may contribute to age-related vascular dysfunction. NEW & NOTEWORTHY This study determined, for the first time, that vascular mitochondrial oxidative respiratory capacity, oxidative coupling efficiency, and mitochondrial content fell progressively with advancing age. In terms of single mitochondrion-specific respiration, the age-related differences were completely ablated and the likelihood of free radical production increased progressively with advancing age. This study reveals that vascular mitochondrial respiratory capacity declines with advancing age, as a consequence of falling mitochondrial content, as does oxidative coupling efficiency.
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Affiliation(s)
- Soung Hun Park
- Geriatric Research, Education, and Clinical Center, George E. Wahlen Department of Veterans Affairs Medical Center , Salt Lake City, Utah.,Department of Nutrition and Integrative Physiology, University of Utah , Salt Lake City, Utah
| | - Oh Sung Kwon
- Geriatric Research, Education, and Clinical Center, George E. Wahlen Department of Veterans Affairs Medical Center , Salt Lake City, Utah.,Division of Geriatrics, Department of Internal Medicine, University of Utah , Salt Lake City, Utah
| | - Song-Young Park
- School of Health and Kinesiology, University of Nebraska , Omaha, Nebraska
| | - Joshua C Weavil
- Geriatric Research, Education, and Clinical Center, George E. Wahlen Department of Veterans Affairs Medical Center , Salt Lake City, Utah.,Division of Geriatrics, Department of Internal Medicine, University of Utah , Salt Lake City, Utah
| | - Robert H I Andtbacka
- Department of Surgery, Huntsman Cancer Hospital, University of Utah , Salt Lake City, Utah
| | - John R Hyngstrom
- Department of Surgery, Huntsman Cancer Hospital, University of Utah , Salt Lake City, Utah
| | - Van Reese
- Geriatric Research, Education, and Clinical Center, George E. Wahlen Department of Veterans Affairs Medical Center , Salt Lake City, Utah.,Division of Geriatrics, Department of Internal Medicine, University of Utah , Salt Lake City, Utah
| | - Russell S Richardson
- Geriatric Research, Education, and Clinical Center, George E. Wahlen Department of Veterans Affairs Medical Center , Salt Lake City, Utah.,Department of Nutrition and Integrative Physiology, University of Utah , Salt Lake City, Utah.,Division of Geriatrics, Department of Internal Medicine, University of Utah , Salt Lake City, Utah
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Manturova NE, Stupin VA, Smirnova GO, Silina EV. Influence of pharmacological preconditioning on the results of lifting operations efficiency. Heliyon 2018; 4:e00758. [PMID: 30186981 PMCID: PMC6120743 DOI: 10.1016/j.heliyon.2018.e00758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 07/10/2018] [Accepted: 08/23/2018] [Indexed: 11/26/2022] Open
Abstract
The main aim of the study is to determine the effectiveness and safety of lifting operations in women with varying degrees of involuntary changes of facial skin, in particular when applying pharmacological conditioning, with the objectification of the role of the latter. Materials and methods A research and surgical treatment were conducted to eliminate involutional changes of various degrees in the facial skin of 461 women aged 35–75 years. Surface lifting was performed in 20.2% of patients, SMAS-lifting – 49.0%, SMAS-lifting with a three-level endoscopic assist lift of the lower face zone was performed in 30.8% of women. Before the surgery in 13.2% of cases, I degree of involutional changes in facial skin was registered, 47.9% – grade II, 38.9% – grade III. Patients were divided into two comparable groups. With the standard preparation without additional drug correction, 299 women (64.9%) were operated on in the preoperative period, they made up a comparison group. The main group included 162 (35.1%) women who underwent therapeutic conditioning before the lifting operation (Cytoflavin, n = 86; Actovegin n = 23; Ethylmethylhydroxypyridine succinate, n = 32; Meldonium, n = 21; Pentoxifylline, n = 31; Vinpocetine n = 27). Instrumental evaluation of the skin dermal microcirculation was performed using laser Doppler flowmetry and estimation of transcutaneous oxygen tension. In the blood plasma, the parameters of free radical processes (FRP) were studied. FRP were studied in terms of generation of active oxygen forms by leukocytes – intensity of chemiluminescence basal and intensity of chemiluminescence stimulated, as well as antiperoxide plasma activity and malondialdehyde. Early postoperative complications were analyzed, the number of repeated lifting surgical corrections on the face was studied for 5 years. Results The role of FRP in the pathogenesis of involuntary changes in the facial skin has been established. The imbalance of FRP was expressed in the intensification of the reactive oxygen species generation and products of lipid peroxidation. This correlated with disorders of cutaneous microcirculation and a decrease in the saturation of the facial tissues with oxygen, manifested by an increasing energy deficit and the severity of involutional skin changes. The obtained data justify the expediency of using pharmacological conditioning with energy correcting antioxidant medicine. Preoperative conditioning allowed to reduce the number of early postlifting complications associated with tissue trophism in a quarter, especially during surface lifting. In addition, in the preconditioning group, the scar was more cosmetic already at the seventh day after the operation. Based on the study of postoperative catamnesis, self-assessment data and laboratory-instrumental methods of skin system examination in people of different ages, it was revealed that while using SMAS-lifting with a three-level endoscopic-assisted lifting of the lower part of the face, the lowest frequency of complications and the best 5-year effectiveness were established.
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Affiliation(s)
- N E Manturova
- Pirogov Russian National Research Medical University (RNRMU), Ostrovityanova St. 1, Moscow, 117997, Russia.,Institute of Plastic Surgery and Cosmetology, Olkhovskaya St., 27, Moscow, 105066, Russia
| | - V A Stupin
- Pirogov Russian National Research Medical University (RNRMU), Ostrovityanova St. 1, Moscow, 117997, Russia.,Institute of Plastic Surgery and Cosmetology, Olkhovskaya St., 27, Moscow, 105066, Russia
| | - G O Smirnova
- Institute of Plastic Surgery and Cosmetology, Olkhovskaya St., 27, Moscow, 105066, Russia.,Kaluga Regional Clinical Hospital, Vishnevskaya St., 1, Kaluga, 248007, Russia
| | - E V Silina
- I.M. Sechenov First Moscow State Medical University (Sechenov University), Trubetskaya St., 8, Moscow, 119991, Russia
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Kirschen GW, Kéry R, Ge S. The Hippocampal Neuro-Glio-Vascular Network: Metabolic Vulnerability and Potential Neurogenic Regeneration in Disease. Brain Plast 2018; 3:129-144. [PMID: 30151338 PMCID: PMC6091038 DOI: 10.3233/bpl-170055] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Brain metabolism is a fragile balance between nutrient/oxygen supply provided by the blood and neuronal/glial demand. Small perturbations in these parameters are necessary for proper homeostatic functioning and information processing, but can also cause significant damage and cell death if dysregulated. During embryonic and early post-natal development, massive neurogenesis occurs, a process that continues at a limited rate in adulthood in two neurogenic niches, one in the lateral ventricle and the other in the hippocampal dentate gyrus. When metabolic demand does not correspond with supply, which can occur dramatically in the case of hypoxia or ischemia, or more subtly in the case of neuropsychiatric or neurodegenerative disorders, both of these neurogenic niches can respond—either in a beneficial manner, to regenerate damaged or lost tissue, or in a detrimental fashion—creating aberrant synaptic connections. In this review, we focus on the complex relationship that exists between the cerebral vasculature and neurogenesis across development and in disease states including hypoxic-ischemic injury, hypertension, diabetes mellitus, and Alzheimer’s disease. Although there is still much to be elucidated, we are beginning to appreciate how neurogenesis may help or harm the metabolically-injured brain, in the hopes that these insights can be used to tailor novel therapeutics to regenerate damaged tissue after injury.
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Affiliation(s)
- Gregory W Kirschen
- Medical Scientist Training Program (MSTP), Stony Brook Medicine, Stony Brook, NY, USA.,Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, USA
| | - Rachel Kéry
- Medical Scientist Training Program (MSTP), Stony Brook Medicine, Stony Brook, NY, USA.,Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, USA
| | - Shaoyu Ge
- Department of Neurobiology and Behavior, Stony Brook University, Stony Brook, NY, USA
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Ran Y, Liu Z, Huang S, Shen J, Li F, Zhang W, Chen C, Geng X, Ji Z, Du H, Hu X. Splenectomy Fails to Provide Long-Term Protection Against Ischemic Stroke. Aging Dis 2018; 9:467-479. [PMID: 29896434 PMCID: PMC5988601 DOI: 10.14336/ad.2018.0130] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/12/2018] [Indexed: 12/12/2022] Open
Abstract
Splenectomy before or immediately after stroke provides early brain protection. This study aims to explore the effect of splenectomy on long-term neurological recovery after stroke, which is currently lacking in the field. Adult male rats were randomized into splenectomy or sham groups and then subjected to 90 min of middle cerebral artery occlusion (MCAO). Spleen was removed right upon reperfusion or 3d after MCAO. Infarct volume, neurological functions, and peripheral immune cell populations were assessed up to 28d after stroke. The results show that delayed removal of spleen did not reduce brain tissue loss and showed no effect on sensorimotor function (Rotarod, beam balance, forelimb placing, grid walk, and adhesive removal tests) or cognitive function (Morris water maze). Spleen removal immediately upon reperfusion, although significantly reduced the infarct size and immune cell infiltration 3d after MCAO, also failed to promote long-term recovery. Flow cytometry analysis demonstrated that immediate splenectomy after MCAO resulted in a prolonged decrease in the percentage of CD3+CD4+ and CD3+CD8+ T cells in total lymphocytes as compared to non-splenectomy MCAO rats. In contrast, the percentage of CD3-CD45RA+ B cells was significantly elevated after splenectomy. As a result, the ratio of T/B cells was significantly reduced in stroke rats with splenectomy. In conclusion, delayed splenectomy failed to provide long-term protection to the ischemic brain or improve functional recovery. The acute neuroprotective effect achieved by early splenectomy after stroke cannot last for long term. This loss of neuroprotection might be related to the prolonged disturbance in the T cell to B cell ratio.
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Affiliation(s)
- Yuanyuan Ran
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,2Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Zongjian Liu
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,2Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Shuo Huang
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,2Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Jiamei Shen
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Fengwu Li
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Wenxiu Zhang
- 2Central Laboratory, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Chen Chen
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaokun Geng
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Zhili Ji
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Huishan Du
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Xiaoming Hu
- 1China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, Beijing, China.,3Pittsburgh Institute of Brain Disorders and Recovery, and Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, USA
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Kamchatnov PR, Chugunov AV, Tyazhelnikov AA, Pyshkina LI. Pathogenesis of chronic disorders of cerebral circulation. Zh Nevrol Psikhiatr Im S S Korsakova 2017; 117:70-77. [DOI: 10.17116/jnevro201711712270-77] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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