1
|
Wang H, Wang Z, Gao Y, Wang J, Yuan Y, Zhang C, Zhang X. STZ-induced diabetes exacerbates neurons ferroptosis after ischemic stroke by upregulating LCN2 in neutrophils. Exp Neurol 2024; 377:114797. [PMID: 38670252 DOI: 10.1016/j.expneurol.2024.114797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/12/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
Diabetic is a major contributor to the unfavorable prognosis of ischemic stroke. However, intensive hypoglycemic strategies do not improve stroke outcomes, implying that diabetes may affect stroke outcomes through other ways. Ferroptosis is a novel programmed cell death pathway associated with the development of diabetes and ischemic stroke. This study aimed to investigate the effect of streptozotocin (STZ)-induced diabetes on ferroptosis after stroke from the immune cell perspective, and to provide a theoretical foundation for the clinical management of ischemic stroke in patients with diabetes. The results revealed that STZ-induced diabetes not only facilitates the infiltration of neutrophils into the brain after stroke, but also upregulates the expression of lipocalin 2 (LCN2) in neutrophils. LCN2 promotes lipid peroxide accumulation by increasing intracellular ferrous ions, which intensify ferroptosis in major brain cell populations, especially neurons. Our findings suggest that STZ-induced diabetes aggravates ischemic stroke partially by mediating ferroptosis through neutrophil-derived LCN2. These data contribute to improved understanding of post-stroke immune regulation in diabetes, and offer a potentially novel therapeutic target for the management of acute-stage ischemic stroke complicated with diabetes.
Collapse
Affiliation(s)
- Huan Wang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, PR China; Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, Hebei 050000, PR China; Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei 050000, PR China
| | - Zhao Wang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, PR China; Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, Hebei 050000, PR China; Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei 050000, PR China
| | - Yuxiao Gao
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, PR China; Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, Hebei 050000, PR China; Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei 050000, PR China
| | - Jingjing Wang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, PR China; Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, Hebei 050000, PR China; Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei 050000, PR China
| | - Yujia Yuan
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, PR China; Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, Hebei 050000, PR China; Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei 050000, PR China
| | - Cong Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, PR China; Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, Hebei 050000, PR China; Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei 050000, PR China
| | - Xiangjian Zhang
- Department of Neurology, Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, PR China; Hebei Collaborative Innovation Center for Cardio-Cerebrovascular Disease, Shijiazhuang, Hebei 050000, PR China; Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, Hebei 050000, PR China.
| |
Collapse
|
2
|
Yokomizo S, Kopp T, Roessing M, Morita A, Lee S, Cho S, Ogawa E, Komai E, Inoue K, Fukushi M, Feil S, Kim HH, Bragin DE, Gerashchenko D, Huang PL, Kashiwagi S, Atochin DN. Near-Infrared II Photobiomodulation Preconditioning Ameliorates Stroke Injury via Phosphorylation of eNOS. Stroke 2024; 55:1641-1649. [PMID: 38572660 PMCID: PMC11126363 DOI: 10.1161/strokeaha.123.045358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 02/28/2024] [Indexed: 04/05/2024]
Abstract
BACKGROUND The current management of patients with stroke with intravenous thrombolysis and endovascular thrombectomy is effective only when it is timely performed on an appropriately selected but minor fraction of patients. The development of novel adjunctive therapy is highly desired to reduce morbidity and mortality with stroke. Since endothelial dysfunction is implicated in the pathogenesis of stroke and is featured with suppressed endothelial nitric oxide synthase (eNOS) with concomitant nitric oxide deficiency, restoring endothelial nitric oxide represents a promising approach to treating stroke injury. METHODS This is a preclinical proof-of-concept study to determine the therapeutic effect of transcranial treatment with a low-power near-infrared laser in a mouse model of ischemic stroke. The laser treatment was performed before the middle cerebral artery occlusion with a filament. To determine the involvement of eNOS phosphorylation, unphosphorylatable eNOS S1176A knock-in mice were used. Each measurement was analyzed by a 2-way ANOVA to assess the effect of the treatment on cerebral blood flow with laser Doppler flowmetry, eNOS phosphorylation by immunoblot analysis, and stroke outcomes by infarct volumes and neurological deficits. RESULTS Pretreatment with a 1064-nm laser at an irradiance of 50 mW/cm2 improved cerebral blood flow, eNOS phosphorylation, and stroke outcomes. CONCLUSIONS Near-infrared II photobiomodulation could offer a noninvasive and low-risk adjunctive therapy for stroke injury. This new modality using a physical parameter merits further consideration to develop innovative therapies to prevent and treat a wide array of cardiovascular diseases.
Collapse
Affiliation(s)
- Shinya Yokomizo
- Department of Neurology, MassGeneral Institute of Neurodegenerative Diseases, Massachusetts General Hospital, 114 16th Street, Charlestown, MA, 02129, USA
- Department of Radiological Science, Tokyo Metropolitan University, 7-2-10 Higashi-Ogu, Arakawa, Tokyo 116-8551, Japan
| | - Timo Kopp
- Interfaculty Institute of Biochemistry (IFIB), University of Tübingen, Auf der Morgenstelle 34, Tübingen 72076, Germany
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital 149 13 Street, Charlestown, MA 02129, USA
| | - Malte Roessing
- Interfaculty Institute of Biochemistry (IFIB), University of Tübingen, Auf der Morgenstelle 34, Tübingen 72076, Germany
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital 149 13 Street, Charlestown, MA 02129, USA
| | - Atsuyo Morita
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital 149 13 Street, Charlestown, MA 02129, USA
| | - Seeun Lee
- Stroke and Neurovascular Regulation Laboratory, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
- School of Korean Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Suin Cho
- Stroke and Neurovascular Regulation Laboratory, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
- School of Korean Medicine, Pusan National University, Yangsan 50612, Republic of Korea
| | - Emiyu Ogawa
- School of Allied Health Science, Kitasato University, 1-15-1 Kitasato Minami-ku Sagamihara, Kanagawa, Japan
| | - Eri Komai
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital 149 13 Street, Charlestown, MA 02129, USA
| | - Kazumasa Inoue
- Department of Radiological Science, Tokyo Metropolitan University, 7-2-10 Higashi-Ogu, Arakawa, Tokyo 116-8551, Japan
| | - Masahiro Fukushi
- Department of Radiological Science, Tokyo Metropolitan University, 7-2-10 Higashi-Ogu, Arakawa, Tokyo 116-8551, Japan
| | - Susanne Feil
- Interfaculty Institute of Biochemistry (IFIB), University of Tübingen, Auf der Morgenstelle 34, Tübingen 72076, Germany
| | - Hyung-Hwan Kim
- Stroke and Neurovascular Regulation Laboratory, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA
| | - Denis E. Bragin
- Lovelace Biomedical Research Institute, 2425 Ridgecrest Dr. SE, Albuquerque, NM 87108, USA
- Department of Neurology, The University of New Mexico School of Medicine, MSC08 4720, 1 UNM, Albuquerque, NM 87131, USA
| | - Dmitry Gerashchenko
- Department of Psychiatry, Boston VA Medical Center West Roxbury, Veterans Affairs Boston Healthcare System and Harvard Medical School, 1400 VFW Pkwy, West Roxbury, MA 02132, USA
| | - Paul L. Huang
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital 149 13 Street, Charlestown, MA 02129, USA
| | - Satoshi Kashiwagi
- Department of Psychiatry, Boston VA Medical Center West Roxbury, Veterans Affairs Boston Healthcare System and Harvard Medical School, 1400 VFW Pkwy, West Roxbury, MA 02132, USA
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, 149 13 Street, Charlestown, MA, 02129, USA
| | - Dmitriy N. Atochin
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital 149 13 Street, Charlestown, MA 02129, USA
- Department of Psychiatry, Boston VA Medical Center West Roxbury, Veterans Affairs Boston Healthcare System and Harvard Medical School, 1400 VFW Pkwy, West Roxbury, MA 02132, USA
| |
Collapse
|
3
|
Luo JY, Cheng CK, Gou L, He L, Zhao L, Zhang Y, Wang L, Lau CW, Xu A, Chen AF, Huang Y. Induction of KLF2 by Exercise Activates eNOS to Improve Vasodilatation in Diabetic Mice. Diabetes 2023; 72:1330-1342. [PMID: 37347764 DOI: 10.2337/db23-0070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 06/13/2023] [Indexed: 06/24/2023]
Abstract
Diabetic endothelial dysfunction associated with diminished endothelial nitric oxide (NO) synthase (eNOS) activity accelerates the development of atherosclerosis and cardiomyopathy. However, the approaches to restore eNOS activity and endothelial function in diabetes remain limited. The current study shows that enhanced expression of Krüppel-like factor 2 (KLF2), a shear stress-inducible transcription factor, effectively improves endothelial function through increasing NO bioavailability. KLF2 expression is suppressed in diabetic mouse aortic endothelium. Running exercise and simvastatin treatment induce endothelial KLF2 expression in db/db mice. Adenovirus-mediated endothelium-specific KLF2 overexpression enhances both endothelium-dependent relaxation and flow-mediated dilatation, while it attenuates oxidative stress in diabetic mouse arteries. KLF2 overexpression increases the phosphorylation of eNOS at serine 1177 and eNOS dimerization. RNA-sequencing analysis reveals that KLF2 transcriptionally upregulates genes that are enriched in the cyclic guanosine monophosphate-protein kinase G-signaling pathway, cAMP-signaling pathway, and insulin-signaling pathway, all of which are the upstream regulators of eNOS activity. Activation of the phosphoinositide 3-kinase-Akt pathway and Hsp90 contributes to KLF2-induced increase of eNOS activity. The present results suggest that approaches inducing KLF2 activation, such as physical exercise, are effective to restore eNOS activity against diabetic endothelial dysfunction. ARTICLE HIGHLIGHTS Exercise and statins restore the endothelial expression of Krüppel-like factor 2 (KLF2), which is diminished in diabetic db/db mice. Endothelium-specific overexpression of KLF2 improves endothelium-dependent relaxation and flow-mediated dilation through increasing nitric oxide bioavailability. KLF2 promotes endothelial nitric oxide synthase (eNOS) coupling and phosphorylation in addition to its known role in eNOS transcription. KLF2 upregulates the expression of several panels of genes that regulate eNOS activity.
Collapse
Affiliation(s)
- Jiang-Yun Luo
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- School of Biomedical Sciences and Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Chak Kwong Cheng
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Lingshan Gou
- Center for Genetic Medicine, Xuzhou Maternity and Health Care Hospital, Jiangsu, China
| | - Lei He
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Lei Zhao
- School of Biomedical Sciences and Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Yang Zhang
- School of Public Health (Shenzhen), Sun Yat-sen University, Guangdong, China
| | - Li Wang
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Chi Wai Lau
- School of Biomedical Sciences and Shenzhen Research Institute, Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Aimin Xu
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Alex F Chen
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Huang
- Department of Biomedical Sciences, City University of Hong Kong, Hong Kong Special Administrative Region, China
| |
Collapse
|
4
|
Shetti AU, Ramakrishnan A, Romanova L, Li W, Vo K, Volety I, Ratnayake I, Stephen T, Minshall RD, Cologna SM, Lazarov O. Reduced endothelial caveolin-1 underlies deficits in brain insulin signalling in type 2 diabetes. Brain 2023; 146:3014-3028. [PMID: 36731883 PMCID: PMC10316766 DOI: 10.1093/brain/awad028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 01/07/2023] [Accepted: 01/17/2023] [Indexed: 02/04/2023] Open
Abstract
Patients with type 2 diabetes exhibit severe impairments in insulin signalling in the brain and are five times more likely to develop Alzheimer's disease. However, what leads to these impairments is not fully understood. Here, we show reduced expression of endothelial cell caveolin-1 (Cav-1) in the db/db (Leprdb) mouse model of type 2 diabetes. This reduction correlated with alterations in insulin receptor expression and signalling in brain microvessels as well as brain parenchyma. These findings were recapitulated in the brains of endothelial cell-specific Cav-1 knock-out (Tie2Cre; Cav-1fl/fl) mice. Lack of Cav-1 in endothelial cells led to reduced response to insulin as well as reduced insulin uptake. Furthermore, we observed that Cav-1 was necessary for the stabilization of insulin receptors in lipid rafts. Interactome analysis revealed that insulin receptor interacts with Cav-1 and caveolae-associated proteins, insulin-degrading enzyme and the tight junction protein Zonula Occludence-1 in brain endothelial cells. Restoration of Cav-1 in Cav-1 knock-out brain endothelial cells rescued insulin receptor expression and localization. Overall, these results suggest that Cav-1 regulates insulin signalling and uptake by brain endothelial cells by modulating IR-α and IR-β localization and function in lipid rafts. Furthermore, depletion of endothelial cell-specific Cav-1 and the resulting impairment in insulin transport leads to alteration in insulin signalling in the brain parenchyma of type 2 diabetics.
Collapse
Affiliation(s)
- Aashutosh U Shetti
- Department of Anatomy and Cell Biology, College of Medicine, The University of Illinois Chicago, Chicago, IL 60612, USA
| | - Abhirami Ramakrishnan
- Department of Anatomy and Cell Biology, College of Medicine, The University of Illinois Chicago, Chicago, IL 60612, USA
| | - Liudmila Romanova
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL 60612, USA
| | - Wenping Li
- Department of Chemistry, College of Liberal Arts and Sciences, The University of Illinois Chicago, Chicago, IL 60612, USA
| | - Khanh Vo
- Department of Anatomy and Cell Biology, College of Medicine, The University of Illinois Chicago, Chicago, IL 60612, USA
| | - Ipsita Volety
- Department of Anatomy and Cell Biology, College of Medicine, The University of Illinois Chicago, Chicago, IL 60612, USA
| | - Ishara Ratnayake
- Electron Microscopy Core, Research Resource Center, The University of Illinois Chicago, Chicago, IL 60612, USA
| | - Terilyn Stephen
- Department of Anatomy and Cell Biology, College of Medicine, The University of Illinois Chicago, Chicago, IL 60612, USA
| | - Richard D Minshall
- Department of Pharmacology and Regenerative Medicine, College of Medicine, The University of Illinois Chicago, Chicago, IL 60612, USA
- Department of Anesthesiology, College of Medicine, The University of Illinois Chicago, Chicago, IL 60612, USA
| | - Stephanie M Cologna
- Department of Chemistry, College of Liberal Arts and Sciences, The University of Illinois Chicago, Chicago, IL 60612, USA
| | - Orly Lazarov
- Department of Anatomy and Cell Biology, College of Medicine, The University of Illinois Chicago, Chicago, IL 60612, USA
| |
Collapse
|
5
|
Huang S, Taylor CG, Zahradka P. Growth State-Dependent Activation of eNOS in Response to DHA: Involvement of p38 MAPK. Int J Mol Sci 2023; 24:ijms24098346. [PMID: 37176054 PMCID: PMC10179717 DOI: 10.3390/ijms24098346] [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: 03/21/2023] [Revised: 04/19/2023] [Accepted: 05/01/2023] [Indexed: 05/15/2023] Open
Abstract
Our laboratory previously reported that docosahexaenoic acid (DHA) differentially activates p38 mitogen-activated protein kinase (MAPK) in growing and quiescent human endothelial cells, which represent the dysfunctional and healthy states in vivo, respectively. Since endothelial nitric oxide synthase (eNOS) activity differs between healthy and dysfunctional endothelial cells, and p38 MAPK reportedly regulates both the activity and expression of eNOS, we hypothesized that the beneficial actions of DHA on endothelial cells are due to eNOS activation by p38 MAPK. The contribution of mitogen- and stress-activated protein kinase (MSK), a p38 MAPK substrate, was also investigated. Growing and quiescent EA.hy926 cells, prepared on Matrigel®-coated plates, were incubated with inhibitors of p38MAPK or MSK before adding DHA. eNOS phosphorylation and levels were quantified by Western blotting. Treatment with 20 µM DHA activated eNOS in both growth states whereas 125 µM DHA suppressed eNOS activation in growing cells. Quiescent cells had higher basal levels of eNOS than growing cells, while 125 µM DHA decreased eNOS levels in both growth states. p38 MAPK inhibition enhanced eNOS activation in quiescent cells but suppressed it in growing cells. Interestingly, 125 µM DHA counteracted these effects of p38 MAPK inhibition in both growth states. MSK was required for eNOS activation in both growth states, but it only mediated eNOS activation by DHA in quiescent cells. MSK thus affects eNOS via a pathway independent of p38MAPK. Quiescent cells were also more resistant to the apoptosis-inducing effect of 125 µM DHA compared to growing cells. The growth state-dependent regulation of p38MAPK and eNOS by DHA provides novel insight into the molecular mechanisms by which DHA influences endothelial cell function.
Collapse
Affiliation(s)
- Shiqi Huang
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
| | - Carla G Taylor
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB R3E 0W2, Canada
| | - Peter Zahradka
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, MB R3E 0W2, Canada
| |
Collapse
|
6
|
Abdul Ghani MA, Ugusman A, Latip J, Zainalabidin S. Role of Terpenophenolics in Modulating Inflammation and Apoptosis in Cardiovascular Diseases: A Review. Int J Mol Sci 2023; 24:ijms24065339. [PMID: 36982410 PMCID: PMC10049039 DOI: 10.3390/ijms24065339] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/17/2023] [Accepted: 02/18/2023] [Indexed: 03/14/2023] Open
Abstract
One in every three deaths worldwide is caused by cardiovascular diseases (CVDs), estimating a total of 17.9 million deaths annually. By 2030, it is expected that more than 24 million people will die from CVDs related complications. The most common CVDs are coronary heart disease, myocardial infarction, stroke, and hypertension. A plethora of studies has shown inflammation causing both short-term and long-term damage to the tissues in many organ systems, including the cardiovascular system. In parallel to inflammation processes, it has been discovered that apoptosis, a mode of programmed cell death, may also contribute to CVD development due to the loss of cardiomyocytes. Terpenophenolic compounds are comprised of terpenes and natural phenols as secondary metabolites by plants and are commonly found in the genus Humulus and Cannabis. A growing body of evidence has shown that terpenophenolic compounds exhibit protective properties against inflammation and apoptosis within the cardiovascular system. This review highlights the current evidence elucidating the molecular actions of terpenophenolic compounds in protecting the cardiovascular system, i.e., bakuchiol, ferruginol, carnosic acid, carnosol, carvacrol, thymol and hinokitiol. The potential of these compounds is discussed as the new nutraceutical drugs that may help to decrease the burden of cardiovascular disorders.
Collapse
Affiliation(s)
- Muhamad Adib Abdul Ghani
- Programme of Biomedical Sciences, Centre of Toxicology and Health Risk Study, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia
| | - Azizah Ugusman
- Department of Physiology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur 56000, Malaysia
| | - Jalifah Latip
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi 43600, Malaysia
- Correspondence: (J.L.); (S.Z.); Tel.: +60-38921-1875 (J.L.); +60-39289-7684 (S.Z.)
| | - Satirah Zainalabidin
- Programme of Biomedical Sciences, Centre of Toxicology and Health Risk Study, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur 50300, Malaysia
- Correspondence: (J.L.); (S.Z.); Tel.: +60-38921-1875 (J.L.); +60-39289-7684 (S.Z.)
| |
Collapse
|
7
|
Kashiwagi S, Morita A, Yokomizo S, Ogawa E, Komai E, Huang PL, Bragin DE, Atochin DN. Photobiomodulation and nitric oxide signaling. Nitric Oxide 2023; 130:58-68. [PMID: 36462596 PMCID: PMC9808891 DOI: 10.1016/j.niox.2022.11.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/05/2022] [Accepted: 11/27/2022] [Indexed: 12/05/2022]
Abstract
Nitric oxide (NO) is a well-known gaseous mediator that maintains vascular homeostasis. Extensive evidence supports that a hallmark of endothelial dysfunction, which leads to cardiovascular diseases, is endothelial NO deficiency. Thus, restoring endothelial NO represents a promising approach to treating cardiovascular complications. Despite many therapeutic agents having been shown to augment NO bioavailability under various pathological conditions, success in resulting clinical trials has remained elusive. There is solid evidence of diverse beneficial effects of the treatment with low-power near-infrared (NIR) light, defined as photobiomodulation (PBM). Although the precise mechanisms of action of PBM are still elusive, recent studies consistently report that PBM improves endothelial dysfunction via increasing bioavailable NO in a dose-dependent manner and open a feasible path to the use of PBM for treating cardiovascular diseases via augmenting NO bioavailability. In particular, the use of NIR light in the NIR-II window (1000-1700 nm) for PBM, which has reduced scattering and minimal tissue absorption with the largest penetration depth, is emerging as a promising therapy. In this review, we update recent findings on PBM and NO.
Collapse
Affiliation(s)
- Satoshi Kashiwagi
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, 149 13th Street, Charlestown, MA, 02129, USA.
| | - Atsuyo Morita
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital, 149 13th Street, Charlestown, MA, 02129, USA
| | - Shinya Yokomizo
- Gordon Center for Medical Imaging, Department of Radiology, Massachusetts General Hospital, 149 13th Street, Charlestown, MA, 02129, USA; Department of Radiological Science, Tokyo Metropolitan University, 7-2-10 Higashi-Ogu, Arakawa, Tokyo, 116-8551, Japan
| | - Emiyu Ogawa
- School of Allied Health Science, Kitasato University, 1-15-1 Kitasato Minami-ku Sagamihara, Kanagawa, Japan
| | - Eri Komai
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital, 149 13th Street, Charlestown, MA, 02129, USA
| | - Paul L Huang
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital, 149 13th Street, Charlestown, MA, 02129, USA
| | - Denis E Bragin
- Lovelace Biomedical Research Institute, 2425 Ridgecrest Dr. SE, Albuquerque, NM, 87108, USA; Department of Neurology, The University of New Mexico School of Medicine, MSC08 4720, 1 UNM, Albuquerque, NM, 87131, USA.
| | - Dmitriy N Atochin
- Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital, 149 13th Street, Charlestown, MA, 02129, USA.
| |
Collapse
|
8
|
Chook CYB, Cheung YM, Ma KY, Leung FP, Zhu H, Niu QJ, Wong WT, Chen ZY. Physiological concentration of protocatechuic acid directly protects vascular endothelial function against inflammation in diabetes through Akt/eNOS pathway. Front Nutr 2023; 10:1060226. [PMID: 37025617 PMCID: PMC10070727 DOI: 10.3389/fnut.2023.1060226] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 03/06/2023] [Indexed: 04/08/2023] Open
Abstract
Background Cardiovascular diseases (CVDs) have been the major cause of mortality in type 2 diabetes. However, new approaches are still warranted since current diabetic medications, which focus mainly on glycemic control, do not effectively lower cardiovascular mortality rate in diabetic patients. Protocatechuic acid (PCA) is a phenolic acid widely distributed in garlic, onion, cauliflower and other plant-based foods. Given the anti-oxidative effects of PCA in vitro, we hypothesized that PCA would also have direct beneficial effects on endothelial function in addition to the systemic effects on vascular health demonstrated by previous studies. Methods and results Since IL-1β is the major pathological contributor to endothelial dysfunction in diabetes, the anti-inflammatory effects of PCA specific on endothelial cells were further verified by the use of IL-1β-induced inflammation model. Direct incubation of db/db mouse aortas with physiological concentration of PCA significantly ameliorated endothelium-dependent relaxation impairment, as well as reactive oxygen species overproduction mediated by diabetes. In addition to the well-studied anti-oxidative activity, PCA demonstrated strong anti-inflammatory effects by suppressing the pro-inflammatory cytokines MCP1, VCAM1 and ICAM1, as well as increasing the phosphorylation of eNOS and Akt in the inflammatory endothelial cell model induced by the key player in diabetic endothelial dysfunction IL-1β. Upon blocking of Akt phosphorylation, p-eNOS/eNOS remained low and the inhibition of pro-inflammatory cytokines by PCA ceased. Conclusion PCA exerts protection on vascular endothelial function against inflammation through Akt/eNOS pathway, suggesting daily acquisition of PCA may be encouraged for diabetic patients.
Collapse
Affiliation(s)
- Chui Yiu Bamboo Chook
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Yiu Ming Cheung
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Ka Ying Ma
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Fung Ping Leung
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Hanyue Zhu
- School of Food Science and Engineering, Foshan University, Foshan, Guangdong, China
| | - Qingshan Jason Niu
- Institute for Advanced Study, Shenzhen University, Shenzhen, Guangdong, China
| | - Wing Tak Wong
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
- *Correspondence: Wing Tak Wong,
| | - Zhen-Yu Chen
- School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
- Zhen-Yu Chen,
| |
Collapse
|
9
|
Petersen C, Bharat D, Wankhade UD, Kim JS, Cutler BR, Denetso C, Gholami S, Nelson S, Bigley J, Johnson A, Chintapalli SV, Piccolo BD, Babu AKS, Paz HA, Shankar K, Symons JD, Babu PVA. Dietary Blueberry Ameliorates Vascular Complications in Diabetic Mice Possibly through NOX4 and Modulates Composition and Functional Diversity of Gut Microbes. Mol Nutr Food Res 2022; 66:e2100784. [PMID: 35120277 PMCID: PMC9132135 DOI: 10.1002/mnfr.202100784] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/27/2022] [Indexed: 11/05/2022]
Abstract
SCOPE In diabetes, endothelial inflammation and dysfunction play a pivotal role in the development of vascular disease. This study investigates the effect of dietary blueberries on vascular complications and gut microbiome in diabetic mice. METHODS AND RESULTS Seven-week-old diabetic db/db mice consume a standard diet (db/db) or a diet supplemented with 3.8% freeze-dried blueberry (db/db+BB) for 10 weeks. Control db/+ mice are fed a standard diet (db/+). Vascular inflammation is assessed by measuring monocyte binding to vasculature and inflammatory markers. Isometric tension procedures are used to assess mesenteric artery function. db/db mice exhibit enhanced vascular inflammation and reduced endothelial-dependent vasorelaxation as compared to db/+ mice, but these are improved in db/db+BB mice. Blueberry supplementation reduces the expression of NOX4 and IκKβ in the aortic vessel and vascular endothelial cells (ECs) isolated from db/db+BB compared to db/db mice. The blueberry metabolites serum reduces glucose and palmitate induced endothelial inflammation in mouse aortic ECs. Further, blueberry supplementation increases commensal microbes and modulates the functional potential of gut microbes in diabetic mice. CONCLUSION Dietary blueberry suppresses vascular inflammation, attenuates arterial endothelial dysfunction, and supports the growth of commensal microbes in diabetic mice. The endothelial-specific vascular benefits of blueberries are mediated through NOX4 signaling.
Collapse
Affiliation(s)
- Chrissa Petersen
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| | - Divya Bharat
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| | - Umesh D. Wankhade
- Arkansas Children’s Nutrition Center, Little Rock, AR 72205, USA
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Ji-Seok Kim
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
- Current address: Department of Physical Education & Research Institute of Pharmaceutical Sciences, Gyeongsang National University, South Korea
| | - Brett Ronald Cutler
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| | - Christopher Denetso
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| | - Samira Gholami
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| | - Samantha Nelson
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| | - Jessica Bigley
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| | - Aspen Johnson
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| | | | - Brian D. Piccolo
- Arkansas Children’s Nutrition Center, Little Rock, AR 72205, USA
| | | | - Henry A. Paz
- Arkansas Children’s Nutrition Center, Little Rock, AR 72205, USA
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Kartik Shankar
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Current address: Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - J. David Symons
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
- Division of Endocrinology, Metabolism, and Diabetes; and Molecular Medicine Program, University of Utah, Salt Lake City, UT 84112, USA
| | - Pon Velayutham Anandh Babu
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| |
Collapse
|
10
|
Yang C, Lavayen BP, Liu L, Sanz BD, DeMars KM, Larochelle J, Pompilus M, Febo M, Sun YY, Kuo YM, Mohamadzadeh M, Farr SA, Kuan CY, Butler AA, Candelario-Jalil E. Neurovascular protection by adropin in experimental ischemic stroke through an endothelial nitric oxide synthase-dependent mechanism. Redox Biol 2021; 48:102197. [PMID: 34826783 PMCID: PMC8633041 DOI: 10.1016/j.redox.2021.102197] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/10/2021] [Accepted: 11/20/2021] [Indexed: 02/06/2023] Open
Abstract
Adropin is a highly-conserved peptide that has been shown to preserve endothelial barrier function. Blood-brain barrier (BBB) disruption is a key pathological event in cerebral ischemia. However, the effects of adropin on ischemic stroke outcomes remain unexplored. Hypothesizing that adropin exerts neuroprotective effects by maintaining BBB integrity, we investigated the role of adropin in stroke pathology utilizing loss- and gain-of-function genetic approaches combined with pharmacological treatment with synthetic adropin peptide. Long-term anatomical and functional outcomes were evaluated using histology, MRI, and a battery of sensorimotor and cognitive tests in mice subjected to ischemic stroke. Brain ischemia decreased endogenous adropin levels in the brain and plasma. Adropin treatment or transgenic adropin overexpression robustly reduced brain injury and improved long-term sensorimotor and cognitive function in young and aged mice subjected to ischemic stroke. In contrast, genetic deletion of adropin exacerbated ischemic brain injury, irrespective of sex. Mechanistically, adropin treatment reduced BBB damage, degradation of tight junction proteins, matrix metalloproteinase-9 activity, oxidative stress, and infiltration of neutrophils into the ischemic brain. Adropin significantly increased phosphorylation of endothelial nitric oxide synthase (eNOS), Akt, and ERK1/2. While adropin therapy was remarkably protective in wild-type mice, it failed to reduce brain injury in eNOS-deficient animals, suggesting that eNOS is required for the protective effects of adropin in stroke. These data provide the first causal evidence that adropin exerts neurovascular protection in stroke through an eNOS-dependent mechanism. We identify adropin as a novel neuroprotective peptide with the potential to improve stroke outcomes.
Collapse
Affiliation(s)
- Changjun Yang
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Bianca P Lavayen
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Lei Liu
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Brian D Sanz
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Kelly M DeMars
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Jonathan Larochelle
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, USA
| | - Marjory Pompilus
- Department of Psychiatry, University of Florida, Gainesville, FL, USA
| | - Marcelo Febo
- Department of Psychiatry, University of Florida, Gainesville, FL, USA
| | - Yu-Yo Sun
- Department of Neuroscience, Center for Brain Immunology and Glia (BIG), University of Virginia School of Medicine, Charlottesville, VA, USA; Institute of Biopharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Yi-Min Kuo
- Department of Neuroscience, Center for Brain Immunology and Glia (BIG), University of Virginia School of Medicine, Charlottesville, VA, USA; Department of Anesthesiology, Taipei Veterans General Hospital and National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Mansour Mohamadzadeh
- Department of Infectious Diseases & Immunology, University of Florida, Gainesville, FL, USA
| | - Susan A Farr
- Department of Internal Medicine, Division of Geriatric Medicine, Saint Louis University School of Medicine, St. Louis, MO, USA; Saint Louis Veterans Affairs Medical Center, Research Service, John Cochran Division, MO, USA; Department of Pharmacology and Physiology, Saint Louis University, St. Louis, MO, USA; Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Chia-Yi Kuan
- Department of Neuroscience, Center for Brain Immunology and Glia (BIG), University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Andrew A Butler
- Department of Pharmacology and Physiology, Saint Louis University, St. Louis, MO, USA; Henry and Amelia Nasrallah Center for Neuroscience, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Eduardo Candelario-Jalil
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Gainesville, FL, USA.
| |
Collapse
|
11
|
Jin YJ, Chennupati R, Li R, Liang G, Wang S, Iring A, Graumann J, Wettschureck N, Offermanns S. Protein kinase N2 mediates flow-induced endothelial NOS activation and vascular tone regulation. J Clin Invest 2021; 131:e145734. [PMID: 34499618 DOI: 10.1172/jci145734] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 09/01/2021] [Indexed: 01/31/2023] Open
Abstract
Formation of NO by endothelial NOS (eNOS) is a central process in the homeostatic regulation of vascular functions including blood pressure regulation, and fluid shear stress exerted by the flowing blood is a main stimulus of eNOS activity. Previous work has identified several mechanosensing and -transducing processes in endothelial cells, which mediate this process and induce the stimulation of eNOS activity through phosphorylation of the enzyme via various kinases including AKT. How the initial mechanosensing and signaling processes are linked to eNOS phosphorylation is unclear. In human endothelial cells, we demonstrated that protein kinase N2 (PKN2), which is activated by flow through the mechanosensitive cation channel Piezo1 and Gq/G11-mediated signaling, as well as by Ca2+ and phosphoinositide-dependent protein kinase 1 (PDK1), plays a pivotal role in this process. Active PKN2 promoted the phosphorylation of human eNOS at serine 1177 and at a newly identified site, serine 1179. These phosphorylation events additively led to increased eNOS activity. PKN2-mediated eNOS phosphorylation at serine 1177 involved the phosphorylation of AKT synergistically with mTORC2-mediated AKT phosphorylation, whereas active PKN2 directly phosphorylated human eNOS at serine 1179. Mice with induced endothelium-specific deficiency of PKN2 showed strongly reduced flow-induced vasodilation and developed arterial hypertension accompanied by reduced eNOS activation. These results uncover a central mechanism that couples upstream mechanosignaling processes in endothelial cells to the regulation of eNOS-mediated NO formation, vascular tone, and blood pressure.
Collapse
Affiliation(s)
- Young-June Jin
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Ramesh Chennupati
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Rui Li
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Guozheng Liang
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - ShengPeng Wang
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Cardiovascular Research Center, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Yanta District, Xi'an, China
| | - András Iring
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Laboratory of Molecular Medicine, Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary
| | - Johannes Graumann
- Scientific Service Group Biomolecular Mass Spectrometry, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Nina Wettschureck
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Centre for Molecular Medicine, Medical Faculty, JW Goethe University Frankfurt, Frankfurt, Germany.,Cardiopulmonary Institute (CPI), Frankfurt, Germany.,German Center for Cardiovascular Research (DZHK), Rhine-Main Site, Frankfurt and Bad Nauheim, Germany
| | - Stefan Offermanns
- Department of Pharmacology, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany.,Centre for Molecular Medicine, Medical Faculty, JW Goethe University Frankfurt, Frankfurt, Germany.,Cardiopulmonary Institute (CPI), Frankfurt, Germany.,German Center for Cardiovascular Research (DZHK), Rhine-Main Site, Frankfurt and Bad Nauheim, Germany
| |
Collapse
|
12
|
Guo Z, Wu X, Fan W. Clarifying the effects of diabetes on the cerebral circulation: Implications for stroke recovery and beyond. Brain Res Bull 2021; 171:67-74. [PMID: 33662495 DOI: 10.1016/j.brainresbull.2021.02.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 02/21/2021] [Accepted: 02/26/2021] [Indexed: 02/07/2023]
Abstract
Given the sheer increased number of victims per year and the availability of only one effective treatment, acute ischemic stroke (AIS) remains to be one of the most under-treated serious diseases. Diabetes not only increases the incidence of ischemic stroke, but amplifies the ischemic damage, upon which if patients with diabetes suffer from stroke, he/she will confront increased risks of long-term functional deficits. The grim reality makes it a pressing need to intensify efforts at the basic science level to understand how diabetes impairs stroke recovery. This review retrospects the clinical and experimental studies in order to elucidate the detrimental effect of diabetes on cerebrovascular circulation including the major arteries/arterioles, collateral circulation, and neovascularization to shed light on further exploration of novel strategies for cerebral circulation protection before and after AIS in patients with diabetes.
Collapse
Affiliation(s)
- Zhihui Guo
- Department of Neurology, Zhongshan Hospital, Fudan University, 200032, Shanghai, China
| | - Xuqing Wu
- Department of Neurology, Zhongshan Hospital, Fudan University, 200032, Shanghai, China
| | - Wei Fan
- Department of Neurology, Zhongshan Hospital, Fudan University, 200032, Shanghai, China.
| |
Collapse
|
13
|
Yankova G, Tur D, Parshin D, Cherevko A, Akulov A. Cerebral arterial architectonics and CFD simulation in mice with type 1 diabetes mellitus of different duration. Sci Rep 2021; 11:3969. [PMID: 33597584 PMCID: PMC7889636 DOI: 10.1038/s41598-021-83484-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 02/02/2021] [Indexed: 11/09/2022] Open
Abstract
Type 1 diabetes is a chronic autoimmune disease that affects tens of millions of people. Diabetes mellitus is one of the strongest factors in the development of cerebrovascular diseases. In this study we used NOD.CB17 Prkdcscid mice and the pharmacological model of type 1 diabetes mellitus of different duration to study changes in the cerebral vasculature. We used two combined approaches using magnetic resonance angiography both steady and transient CFD blood flow modeling. We identified the influence of type 1 diabetes on the architectonics and hemodynamics of the large blood vessels of the brain as the disease progresses. For the first time, we detected a statistically significant change in angioarchitectonics (the angles between the vessels of the circle of Willis, cross-sections areas of vessels) and hemodynamic (maximum blood flow rate, hydraulic resistance) in animals with diabetes duration of 2 months, that is manifested by the development of asymmetry of cerebral blood flow. The result shows the negative effect of diabetes on cerebral circulation as well as the practicability of CFD modeling. This may be of extensive interest, in pharmacological and preclinical studies.
Collapse
Affiliation(s)
- Galina Yankova
- Lavrentyev Institute of Hydrodynamics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia.
| | - Darya Tur
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Daniil Parshin
- Lavrentyev Institute of Hydrodynamics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Alexander Cherevko
- Lavrentyev Institute of Hydrodynamics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| | - Andrey Akulov
- Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
| |
Collapse
|
14
|
Biological Activity of c-Peptide in Microvascular Complications of Type 1 Diabetes-Time for Translational Studies or Back to the Basics? Int J Mol Sci 2020; 21:ijms21249723. [PMID: 33419247 PMCID: PMC7766542 DOI: 10.3390/ijms21249723] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 12/15/2022] Open
Abstract
People with type 1 diabetes have an increased risk of developing microvascular complications, which have a negative impact on the quality of life and reduce life expectancy. Numerous studies in animals with experimental diabetes show that c-peptide supplementation exerts beneficial effects on diabetes-induced damage in peripheral nerves and kidneys. There is substantial evidence that c-peptide counteracts the detrimental changes caused by hyperglycemia at the cellular level, such as decreased activation of endothelial nitric oxide synthase and sodium potassium ATPase, and increase in formation of pro-inflammatory molecules mediated by nuclear factor kappa-light-chain-enhancer of activated B cells: cytokines, chemokines, cell adhesion molecules, vascular endothelial growth factor, and transforming growth factor beta. However, despite positive results from cell and animal studies, no successful c-peptide replacement therapies have been developed so far. Therefore, it is important to improve our understanding of the impact of c-peptide on the pathophysiology of microvascular complications to develop novel c-peptide-based treatments. This article aims to review current knowledge on the impact of c-peptide on diabetic neuro- and nephropathy and to evaluate its potential therapeutic role.
Collapse
|
15
|
Tenopoulou M, Doulias PT. Endothelial nitric oxide synthase-derived nitric oxide in the regulation of metabolism. F1000Res 2020; 9. [PMID: 33042519 PMCID: PMC7531049 DOI: 10.12688/f1000research.19998.1] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/22/2020] [Indexed: 12/13/2022] Open
Abstract
Nitric oxide is an endogenously formed gas that acts as a signaling molecule in the human body. The signaling functions of nitric oxide are accomplished through two primer mechanisms: cGMP-mediated phosphorylation and the formation of S-nitrosocysteine on proteins. This review presents and discusses previous and more recent findings documenting that nitric oxide signaling regulates metabolic activity. These discussions primarily focus on endothelial nitric oxide synthase (eNOS) as the source of nitric oxide.
Collapse
Affiliation(s)
- Margarita Tenopoulou
- Children's Hospital of Philadelphia Research Institute, 3517 Civic Center Boulevard, Philadelphia, Pennsylvania, 19104-4318, USA.,Laboratory of Biochemistry, Department of Chemistry, School of Sciences, University of Ioannina, Ioannina, 45110, Greece
| | - Paschalis-Thomas Doulias
- Children's Hospital of Philadelphia Research Institute, 3517 Civic Center Boulevard, Philadelphia, Pennsylvania, 19104-4318, USA.,Laboratory of Biochemistry, Department of Chemistry, School of Sciences, University of Ioannina, Ioannina, 45110, Greece
| |
Collapse
|
16
|
Gazyakan E, Hirche C, Reichenberger MA, Urbach O, Germann G, Engel H. Modulation of Nitric Oxide Bioavailability Attenuates Ischemia-Reperfusion Injury in Type II Diabetes. J Plast Reconstr Aesthet Surg 2020; 74:183-191. [PMID: 32893152 DOI: 10.1016/j.bjps.2020.08.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 05/31/2020] [Accepted: 08/01/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Diabetes mellitus increases the susceptibility of free tissue transplantations to ischemia-reperfusion injury. The aim of this study was to enhance nitric oxide (NO) bioavailability through exogenous NO synthase and the substrate L-arginine to attenuate ischemia reperfusion-induced alterations in a type 2 diabetes rodent model. MATERIAL AND METHODS Sixty-four Wistar rats were divided into 8 experimental groups. Type 2 diabetes was established over 3 months with a combination of a high-fat diet and streptozotocin. A vascular pedicle isolated rat skin flap model that underwent 3 h of ischemia was used. At 30 min before ischemia, normal saline, endothelial NOSs (eNOSs), inducible NOSs, neuronal NOSs (1 and 2 IU), and L-arginine (50 mg/kg body weight) were administered by intravenous infusion alone or in combination. Ischemia-reperfusion-induced alterations were measured 5 days after the operation. RESULTS The three isoforms of NOS significantly increased the flap vitality rate (VR) between 20% and 28% as compared to the control group (3%). Sole L-arginine administration increased the VR to 33%. The combination of L-arginine with NOS resulted in a further increase in flap VRs (39%-50%). Best results were achieved with the combination of eNOS and L-arginine (50%). An increase in enzyme dosage led to decreased VRs in all NOS isoforms alone and even in combination with L-arginine. CONCLUSION Modulation of NO bioavailability through the exogenous application of NOSs and L-arginine significantly attenuated ischemia-reperfusion-induced alterations in a type 2 diabetic skin flap rat model. The combination of enzyme and substrate result in the highest VRs. Higher enzyme dosage seems to be less effective. This pharmacological preconditioning could be an easy and effective interventional strategy to support the conversion of L-arginine to NO in ischemic and in type 2 diabetic conditions.
Collapse
Affiliation(s)
- Emre Gazyakan
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Hand and Plastic Surgery, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071 Ludwigshafen, Germany
| | - Christoph Hirche
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Hand and Plastic Surgery, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071 Ludwigshafen, Germany
| | - Matthias A Reichenberger
- ETHIANUM-Clinic for Plastic and Reconstructive Surgery, Aesthetic and Preventive Medicine at Heidelberg University Hospital, Voßstraße 6, 69115 Heidelberg, Germany
| | - Olena Urbach
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Hand and Plastic Surgery, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071 Ludwigshafen, Germany
| | - Günter Germann
- ETHIANUM-Clinic for Plastic and Reconstructive Surgery, Aesthetic and Preventive Medicine at Heidelberg University Hospital, Voßstraße 6, 69115 Heidelberg, Germany
| | - Holger Engel
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center, BG Trauma Center Ludwigshafen, Hand and Plastic Surgery, University of Heidelberg, Ludwig-Guttmann-Strasse 13, 67071 Ludwigshafen, Germany; ETHIANUM-Clinic for Plastic and Reconstructive Surgery, Aesthetic and Preventive Medicine at Heidelberg University Hospital, Voßstraße 6, 69115 Heidelberg, Germany.
| |
Collapse
|
17
|
Sports participation and adiposity do not mediate the relationship between birth weight and arterial thickness in adolescents: ABCD Growth Study. Cardiol Young 2019; 29:620-625. [PMID: 31124771 DOI: 10.1017/s1047951119000325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVE To analyse the relationship of altered birth weight with metabolic and cardiovascular outcomes among adolescents, as well as to identify if sports participation is able to attenuate or even eliminate the impact of birth weight on health outcomes. METHODS Cross-sectional study (Analysis of Behaviours of Children During Growth [ABCD Growth Study]). Adolescents with age ranging from 11 to 18 years old (14.7±2.1) stratified according to normal (n = 230) and altered (n = 35) birth weight composed the sample. Birth weight was self-reported by adolescent's parents. Sports participation was assessed by face-to-face interview. Carotid intima-media thickness (CIMT) and femoral intima-media thickness (FIMT) were measured using an ultrasound device. C-reactive protein levels were used to assess the inflammatory status. Blood pressure, Z score of metabolic risk (dyslipidemia and glucose), adiposity, and insulin resistance were covariates. RESULTS In the crude model, FIMT (p value = 0.037) and C-reactive protein (p value = 0.029) were affected by altered birth weight. In the adjusted models, altered birth weight affected FIMT (p value = 0.048; small effect size of 1.7%), independently of sports participation. For C-reactive protein, previous time of engagement in sports (p value = 0.001; small effect size of 4.8%) affected C-reactive protein, independently of birth weight. CONCLUSION Vascular structure seems to be affected by birth weight in adolescents, while its impact on inflammation seems to be attenuated by the regular engagement in sports.
Collapse
|
18
|
Inhibition of acid sphingomyelinase activity ameliorates endothelial dysfunction in db/db mice. Biosci Rep 2019; 39:BSR20182144. [PMID: 30910852 PMCID: PMC6481240 DOI: 10.1042/bsr20182144] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/19/2019] [Accepted: 03/15/2019] [Indexed: 12/25/2022] Open
Abstract
Acid sphingomyelinase (aSMase) plays an important role in endothelial dysfunction. Here, we show that elevated aSMase activity and ceramide content were reduced by desipramine treatment in diabetic animals. The inhibitor of aSMase, desipramine, improved vascular dysfunction in db/db mice. High glucose (HG)-induced up-regulation of aSMase activity and ceramide levels were restored by treatment with aSMase siRNA or desipramine in endothelial cells. In addition, aSMase siRNA or desipramine treatment increased the release of nitric oxide (NO) and the phosphorylation of endothelial NO synthase (eNOS) in diabetic mouse aortas and aortic endothelial cells with HG. These results indicate that inhibition of aSMase/ceramide pathway improves endothelium-dependent vascular relaxation (EDR) largely through regulating the eNOS/NO pathway in diabetic animals.
Collapse
|
19
|
Purvis GSD, Collino M, Loiola RA, Baragetti A, Chiazza F, Brovelli M, Sheikh MH, Collotta D, Cento A, Mastrocola R, Aragno M, Cutrin JC, Reutelingsperger C, Grigore L, Catapano AL, Yaqoob MM, Norata GD, Solito E, Thiemermann C. Identification of AnnexinA1 as an Endogenous Regulator of RhoA, and Its Role in the Pathophysiology and Experimental Therapy of Type-2 Diabetes. Front Immunol 2019; 10:571. [PMID: 30972066 PMCID: PMC6446914 DOI: 10.3389/fimmu.2019.00571] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 03/04/2019] [Indexed: 12/20/2022] Open
Abstract
Annexin A1 (ANXA1) is an endogenously produced anti-inflammatory protein, which plays an important role in the pathophysiology of diseases associated with chronic inflammation. We demonstrate that patients with type-2 diabetes have increased plasma levels of ANXA1 when compared to normoglycemic subjects. Plasma ANXA1 positively correlated with fatty liver index and elevated plasma cholesterol in patients with type-2 diabetes, suggesting a link between aberrant lipid handling, and ANXA1. Using a murine model of high fat diet (HFD)-induced insulin resistance, we then investigated (a) the role of endogenous ANXA1 in the pathophysiology of HFD-induced insulin resistance using ANXA1−/− mice, and (b) the potential use of hrANXA1 as a new therapeutic approach for experimental diabetes and its microvascular complications. We demonstrate that: (1) ANXA1−/− mice fed a HFD have a more severe diabetic phenotype (e.g., more severe dyslipidemia, insulin resistance, hepatosteatosis, and proteinuria) compared to WT mice fed a HFD; (2) treatment of WT-mice fed a HFD with hrANXA1 attenuated the development of insulin resistance, hepatosteatosis and proteinuria. We demonstrate here for the first time that ANXA1−/− mice have constitutively activated RhoA. Interestingly, diabetic mice, which have reduced tissue expression of ANXA1, also have activated RhoA. Treatment of HFD-mice with hrANXA1 restored tissue levels of ANXA1 and inhibited RhoA activity, which, in turn, resulted in restoration of the activities of Akt, GSK-3β and endothelial nitric oxide synthase (eNOS) secondary to re-sensitization of IRS-1 signaling. We further demonstrate in human hepatocytes that ANXA1 protects against excessive mitochondrial proton leak by activating FPR2 under hyperglycaemic conditions. In summary, our data suggest that (a) ANXA1 is a key regulator of RhoA activity, which restores IRS-1 signal transduction and (b) recombinant human ANXA1 may represent a novel candidate for the treatment of T2D and/or its complications.
Collapse
Affiliation(s)
- Gareth S D Purvis
- Department of Translational Medicine and Therapeutics, Bart's and The London School of Medicine and Dentistry, The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Massimo Collino
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Rodrigo A Loiola
- Department of Translational Medicine and Therapeutics, Bart's and The London School of Medicine and Dentistry, The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Andrea Baragetti
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Fausto Chiazza
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Martina Brovelli
- Department of Translational Medicine and Therapeutics, Bart's and The London School of Medicine and Dentistry, The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom.,Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Milan, Italy.,Centro SISA per lo studio del'Aterosclerosi, Bassini Hospital, Lombardy, Italy
| | - Madeeha H Sheikh
- Department of Translational Medicine and Therapeutics, Bart's and The London School of Medicine and Dentistry, The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Debora Collotta
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Alessia Cento
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Raffaella Mastrocola
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Manuela Aragno
- Department of Molecular Biotechnology and Sciences for the Health, University of Turin, Turin, Italy
| | - Juan C Cutrin
- Department of Molecular Biotechnology and Sciences for the Health, University of Turin, Turin, Italy
| | - Chris Reutelingsperger
- Department of Biochemistry, Cardiovascular Research Institute, Maastricht University, Maastricht, Netherlands
| | - Liliana Grigore
- Centro SISA per lo studio del'Aterosclerosi, Bassini Hospital, Lombardy, Italy.,IRCCS Multimedica, Lombardy, Italy
| | - Alberico L Catapano
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Milan, Italy
| | - Magdi M Yaqoob
- Department of Translational Medicine and Therapeutics, Bart's and The London School of Medicine and Dentistry, The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| | - Giuseppe Danilo Norata
- Department of Pharmacological and Biomolecular Sciences, Università Degli Studi di Milano, Milan, Italy.,Centro SISA per lo studio del'Aterosclerosi, Bassini Hospital, Lombardy, Italy
| | - Egle Solito
- Department of Translational Medicine and Therapeutics, Bart's and The London School of Medicine and Dentistry, The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom.,Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università Degli Studi di Napoli "Federico II", Naples, Italy
| | - Christoph Thiemermann
- Department of Translational Medicine and Therapeutics, Bart's and The London School of Medicine and Dentistry, The William Harvey Research Institute, Queen Mary University of London, London, United Kingdom
| |
Collapse
|
20
|
Garcia V, Sessa WC. Endothelial NOS: perspective and recent developments. Br J Pharmacol 2019; 176:189-196. [PMID: 30341769 PMCID: PMC6295413 DOI: 10.1111/bph.14522] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 10/04/2018] [Indexed: 02/06/2023] Open
Abstract
Endothelial NOS (eNOS), and its product NO, are vital components of the control of vasomotor function and cardiovascular homeostasis. In the present review, we will take a deep dive into eNOS enzymology, function and mechanisms regulating endothelial NO. The mechanisms regulating eNOS and NO synthesis discussed here include alterations to transcriptional, post-translational modifications and protein-protein regulations. Also, we will discuss the phenotypes associated with various eNOS mutants and the consequences of a disrupted eNOS/NO cascade, highlighting the importance of eNOS function and vascular homeostasis. LINKED ARTICLES: This article is part of a themed section on Nitric Oxide 20 Years from the 1998 Nobel Prize. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.2/issuetoc.
Collapse
Affiliation(s)
- Victor Garcia
- Vascular Biology and Therapeutics Program, Department of PharmacologyYale University School of MedicineNew HavenCTUSA
| | - William C Sessa
- Vascular Biology and Therapeutics Program, Department of PharmacologyYale University School of MedicineNew HavenCTUSA
| |
Collapse
|
21
|
Yin P, Wei Y, Wang X, Zhu M, Feng J. Roles of Specialized Pro-Resolving Lipid Mediators in Cerebral Ischemia Reperfusion Injury. Front Neurol 2018; 9:617. [PMID: 30131754 PMCID: PMC6090140 DOI: 10.3389/fneur.2018.00617] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 07/10/2018] [Indexed: 12/14/2022] Open
Abstract
Ischemic stroke contributes to ~80% of all stroke cases. Recanalization with thrombolysis or endovascular thrombectomy are currently critical therapeutic strategies for rebuilding the blood supply following ischemic stroke. However, recanalization is often accompanied by cerebral ischemia reperfusion injury that is mediated by oxidative stress and inflammation. Resolution of inflammation belongs to the end stage of inflammation where inflammation is terminated and the repair of damaged tissue is started. Resolution of inflammation is mediated by a group of newly discovered lipid mediators called specialized pro-resolving lipid mediators (SPMs). Accumulating evidence suggests that SPMs decrease leukocyte infiltration, enhance efferocytosis, reduce local neuronal injury, and decrease both oxidative stress and the production of inflammatory cytokines in various in vitro and in vivo models of ischemic stroke. In this review, we summarize the mechanisms of reperfusion injury and the various roles of SPMs in stroke therapy.
Collapse
Affiliation(s)
- Ping Yin
- Department of Neurology and Neuroscience Center, First Hospital of Jilin University, Changchun, China.,First Department of Neurology and Neuroscience Center, Heilongjiang Provincial Hospital, Harbin, China
| | - Yafen Wei
- First Department of Neurology and Neuroscience Center, Heilongjiang Provincial Hospital, Harbin, China
| | - Xu Wang
- Department of Neurology and Neuroscience Center, First Hospital of Jilin University, Changchun, China
| | - Mingqin Zhu
- Department of Neurology and Neuroscience Center, First Hospital of Jilin University, Changchun, China
| | - Jiachun Feng
- Department of Neurology and Neuroscience Center, First Hospital of Jilin University, Changchun, China
| |
Collapse
|
22
|
Nafisa A, Gray SG, Cao Y, Wang T, Xu S, Wattoo FH, Barras M, Cohen N, Kamato D, Little PJ. Endothelial function and dysfunction: Impact of metformin. Pharmacol Ther 2018; 192:150-162. [PMID: 30056057 DOI: 10.1016/j.pharmthera.2018.07.007] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cardiovascular and metabolic diseases remain the leading cause of morbidity and mortality worldwide. Endothelial dysfunction is a key player in the initiation and progression of cardiovascular and metabolic diseases. Current evidence suggests that the anti-diabetic drug metformin improves insulin resistance and protects against endothelial dysfunction in the vasculature. Hereby, we provide a timely review on the protective effects and molecular mechanisms of metformin in preventing endothelial dysfunction and cardiovascular and metabolic diseases.
Collapse
Affiliation(s)
- Asma Nafisa
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, Australia.
| | - Susan G Gray
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, Australia.
| | - Yingnan Cao
- Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou, China
| | - Tinghuai Wang
- Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou, China.
| | - Suowen Xu
- Aab Cardiovascular Research Institute, Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
| | - Feroza H Wattoo
- Department of Biochemistry, PMAS Arid Agriculture University, Shamasabad, Muree Road, Rawalpindi 4600, Pakistan..
| | - Michael Barras
- Dept. of Pharmacy, Princess Alexandra Hospital, 199 Ipswich Rd, Woolloongabba, QLD 4102, Australia.
| | - Neale Cohen
- Baker Heart and Diabetes Institute, Melbourne, 3004, Victoria, Australia.
| | - Danielle Kamato
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, Australia; Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou, China.
| | - Peter J Little
- School of Pharmacy, University of Queensland, Pharmacy Australia Centre of Excellence, Woolloongabba, QLD, Australia; Xinhua College of Sun Yat-sen University, Tianhe District, Guangzhou, China.
| |
Collapse
|
23
|
Circulating metabolites of strawberry mediate reductions in vascular inflammation and endothelial dysfunction in db/db mice. Int J Cardiol 2018; 263:111-117. [PMID: 29681407 DOI: 10.1016/j.ijcard.2018.04.040] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 04/04/2018] [Accepted: 04/09/2018] [Indexed: 01/05/2023]
Abstract
BACKGROUND Cardiovascular disease is 2-4-fold more prevalent in patients with diabetes. Human studies support the cardiovascular benefits of strawberry consumption but the effects of strawberry on diabetic vasculature are unknown. We tested the hypothesis that dietary strawberry supplementation attenuates vascular inflammation and dysfunction in diabetic mice. METHODS Seven-week-old diabetic db/db mice that consumed standard diet (db/db) or diet supplemented with 2.35% freeze-dried strawberry (db/db + SB) for ten weeks were compared to non-diabetic control mice (db/+). Indices of vascular inflammation and dysfunction were measured. Endothelial cells (ECs) were isolated from the vasculature to determine the influence of strawberry on them. The effect of metabolites of strawberry on endothelial inflammation was determined by incubating mouse aortic ECs (MAECs) with ±5% serum, obtained from strawberry fed mice (metabolites serum) or standard diet fed mice (control serum) ± 25 mM glucose and 100 μM palmitate. RESULTS db/db mice exhibited an increased monocyte binding to vessel, elevated blood pressure, and reduced endothelial-dependent vasorelaxation compared with db/+ mice but each defect was attenuated in db/db + SB mice. The elevation of inflammatory molecules, NOX2 and inhibitor-κB kinase observed in ECs from db/db vs. db/+ mice was suppressed in db/db + SB mice. Glucose and palmitate increased endothelial inflammation in MAECs but were normalized by co-incubation with metabolites serum. CONCLUSIONS Dietary supplementation of strawberry attenuates indices of vascular inflammation and dysfunction in diabetic db/db mice. The effect of strawberry on vasculature is endothelial-dependent and possibly mediated through their circulating metabolites. Strawberry might complement conventional therapies to improve vascular complications in diabetics.
Collapse
|
24
|
Feng J, Chen X, Lu S, Li W, Yang D, Su W, Wang X, Shen J. Naringin Attenuates Cerebral Ischemia-Reperfusion Injury Through Inhibiting Peroxynitrite-Mediated Mitophagy Activation. Mol Neurobiol 2018; 55:9029-9042. [DOI: 10.1007/s12035-018-1027-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 03/20/2018] [Indexed: 02/07/2023]
|
25
|
Zheng H, Han Y, Du Y, Shi X, Huang H, Yu X, Tan X, Hu C, Wang Y, Zhou S. Regulation of Hypertension for Secondary Prevention of Stroke: The Possible 'Bridging Function' of Acupuncture. Complement Med Res 2018; 25:45-51. [PMID: 29393105 DOI: 10.1159/000475930] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Worldwide, stroke is the leading cause of mortality and disability, with hypertension being an independent risk factor for a secondary stroke. Acupuncture for the treatment of hypertension gains more attention in alternative and complementary medicine, but the results are inconsistent. Few studies regarding the secondary prevention of stroke by managing hypertension with acupuncture have been carried out as there are some problems regarding the antihypertensive drug status in the secondary prevention of stroke. Still, the potential of acupuncture in regulating the blood pressure for secondary stroke prevention deserves our focus. This review is based on papers recorded in the PubMed, Embase, and Web of Science databases, from their inception until March 28, 2017, and retrieved with the following search terms: hypertension and acupuncture, limited in spontaneously hypertensive rats (SHRs), stress-induced (or cold-induced) hypertensive or pre-hypertensive models. We find that, in these hypertensive animals, acupuncture could mainly influence factors related to the nervous system, oxidative stress, the endocrine system, cardiovascular function, and hemorheology, which are closely associated with the stroke outcome. This trend may give us a hint that acupuncture might well participate in the secondary prevention of stroke through these pathways when used in the management of hypertension.
Collapse
|
26
|
Chen JY, Ye ZX, Wang XF, Chang J, Yang MW, Zhong HH, Hong FF, Yang SL. Nitric oxide bioavailability dysfunction involves in atherosclerosis. Biomed Pharmacother 2017; 97:423-428. [PMID: 29091892 DOI: 10.1016/j.biopha.2017.10.122] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 10/22/2017] [Accepted: 10/22/2017] [Indexed: 12/25/2022] Open
Abstract
The pathological characteristics of atherosclerosis (AS) include lipid accumulation, fibrosis formation and atherosclerotic plaque produced in artery intima, which leads to vascular sclerosis, lumen stenosis and irritates the ischemic changes of corresponding organs. Endothelial dysfunction was closely associated with AS. Nitric oxide (NO) is a multifunctional signaling molecule involved in the maintenance of metabolic and cardiovascular homeostasis. NO is also a potent endogenous vasodilator and enters for the key processes that suppresses the formation vascular lesion even AS. NO bioavailability indicates the production and utilization of endothelial NO in organisms, its decrease is related to oxidative stress, lipid infiltration, the expressions of some inflammatory factors and the alteration of vascular tone, which plays an important role in endothelial dysfunction. The enhancement of arginase activity and the increase in asymmetric dimethylarginine and hyperhomocysteinemia levels all contribute to AS by intervening NO bioavailability in human beings. Diabetes mellitus, obesity, chronic kidney disease and smoking, etc., also participate in AS by influencing NO bioavailability and NO level. Here, we reviewed the relationship between NO bioavailability and AS according the newest literatures.
Collapse
Affiliation(s)
- Jing-Yi Chen
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Zi-Xin Ye
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Xiu-Fen Wang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Jian Chang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Mei-Wen Yang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Hua-Hua Zhong
- Department of Experimental Teaching Center, Nanchang University, Nanchang 330031, China
| | - Fen-Fang Hong
- Department of Experimental Teaching Center, Nanchang University, Nanchang 330031, China.
| | - Shu-Long Yang
- Department of Physiology, College of Medicine, Nanchang University, Nanchang 330006, China.
| |
Collapse
|
27
|
Shi Y, Vanhoutte PM. Macro- and microvascular endothelial dysfunction in diabetes. J Diabetes 2017; 9:434-449. [PMID: 28044409 DOI: 10.1111/1753-0407.12521] [Citation(s) in RCA: 313] [Impact Index Per Article: 44.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 12/06/2016] [Accepted: 12/29/2016] [Indexed: 12/12/2022] Open
Abstract
Endothelial cells, as well as their major products nitric oxide (NO) and prostacyclin, play a key role in the regulation of vascular homeostasis. Diabetes mellitus is an important risk factor for cardiovascular disease. Diabetes-induced endothelial dysfunction is a critical and initiating factor in the genesis of diabetic vascular complications. The present review focuses on both large blood vessels and the microvasculature. The endothelial dysfunction in diabetic macrovascular complications is characterized by reduced NO bioavailability, poorly compensated for by increased production of prostacyclin and/or endothelium-dependent hyperpolarizations, and increased production or action of endothelium-derived vasoconstrictors. The endothelial dysfunction of microvascular complications is primarily characterized by decreased release of NO, enhanced oxidative stress, increased production of inflammatory factors, abnormal angiogenesis, and impaired endothelial repair. In addition, non-coding RNAs (microRNAs) have emerged as participating in numerous cellular processes. Thus, this reviews pays special attention to microRNAs and their modulatory role in diabetes-induced vascular dysfunction. Some therapeutic strategies for preventing and restoring diabetic endothelial dysfunction are also highlighted.
Collapse
Affiliation(s)
- Yi Shi
- Biomedical Research Centre, Shanghai Key Laboratory of organ Transplantation, Zhongshan Hospital, Fudan University, Shanghai, PR China
| | - Paul M Vanhoutte
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Pharmacology and Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR China
| |
Collapse
|
28
|
Ng HH, Yildiz GS, Ku JM, Miller AA, Woodman OL, Hart JL. Chronic NaHS treatment decreases oxidative stress and improves endothelial function in diabetic mice. Diab Vasc Dis Res 2017; 14:246-253. [PMID: 28467198 DOI: 10.1177/1479164117692766] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Hydrogen sulphide (H2S) is endogenously produced in vascular tissue and has anti-oxidant and vasoprotective properties. This study investigates whether chronic treatment using the fast H2S donor NaHS could elicit a vasoprotective effect in diabetes. Diabetes was induced in male C57BL6/J mice with streptozotocin (60 mg/kg daily, ip for 2 weeks) and confirmed by elevated blood glucose and glycated haemoglobin levels. Diabetic mice were then treated with NaHS (100 µmol/kg/day) for 4 weeks, and aortae collected for functional and biochemical analyses. In the diabetic group, both endothelium-dependent vasorelaxation and basal nitric oxide (NO•) bioactivity were significantly reduced ( p < 0.05), and maximal vasorelaxation to the NO• donor sodium nitroprusside was impaired ( p < 0.05) in aorta compared to control mice. Vascular superoxide generation via nicotine adenine dinucleotide phosphate (NADPH) oxidase ( p < 0.05) was elevated in aorta from diabetic mice which was associated with increased expression of NOX2 ( p < 0.05). NaHS treatment of diabetic mice restored endothelial function and exogenous NO• efficacy back to control levels. NaHS treatment also reduced the diabetes-induced increase in NADPH oxidase activity, but did not affect NOX2 protein expression. These data show that chronic NaHS treatment reverses diabetes-induced vascular dysfunction by restoring NO• efficacy and reducing superoxide production in the mouse aorta.
Collapse
MESH Headings
- Animals
- Antioxidants/administration & dosage
- Blood Glucose/metabolism
- Diabetes Mellitus, Experimental/blood
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/drug therapy
- Diabetic Angiopathies/etiology
- Diabetic Angiopathies/metabolism
- Diabetic Angiopathies/physiopathology
- Diabetic Angiopathies/prevention & control
- Dose-Response Relationship, Drug
- Drug Administration Schedule
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/physiopathology
- Glycated Hemoglobin/metabolism
- Male
- Mice, Inbred C57BL
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/physiopathology
- NADPH Oxidase 2/metabolism
- Nitric Oxide/metabolism
- Nitric Oxide Donors/pharmacology
- Nitric Oxide Synthase Type III/metabolism
- Oxidative Stress/drug effects
- Sulfides/administration & dosage
- Superoxides/metabolism
- Time Factors
- Vasodilation/drug effects
- Vasodilator Agents/pharmacology
Collapse
Affiliation(s)
- Hooi H Ng
- 1 School of BioSciences, University of Melbourne, Parkville, VIC, Australia
| | - Gunes S Yildiz
- 2 School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
| | - Jacqueline M Ku
- 2 School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
| | - Alyson A Miller
- 2 School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
| | - Owen L Woodman
- 2 School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
| | - Joanne L Hart
- 2 School of Health and Biomedical Sciences, RMIT University, Bundoora, VIC, Australia
| |
Collapse
|
29
|
Lee HI, Lee SW, Kim SY, Kim NG, Park KJ, Choi BT, Shin YI, Shin HK. Pretreatment with light-emitting diode therapy reduces ischemic brain injury in mice through endothelial nitric oxide synthase-dependent mechanisms. Biochem Biophys Res Commun 2017; 486:945-950. [PMID: 28347821 DOI: 10.1016/j.bbrc.2017.03.131] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 03/23/2017] [Indexed: 11/26/2022]
Abstract
Photostimulation with low-level light emitting diode therapy (LED-T) modulates neurological and psychological functions. The purpose of this study was to evaluate the effects of LED-T pretreatment on the mouse brain after ischemia/reperfusion and to investigate the underlying mechanisms. Ischemia/reperfusion brain injury was induced by middle cerebral artery occlusion. The mice received LED-T twice a day for 2 days prior to cerebral ischemia. After reperfusion, the LED-T group showed significantly smaller infarct and edema volumes, fewer behavioral deficits compared to injured mice that did not receive LED-T and significantly higher cerebral blood flow compared to the vehicle group. We observed lower levels of endothelial nitric oxide synthase (eNOS) phosphorylation in the injured mouse brains, but significantly higher eNOS phosphorylation in LED-T-pretreated mice. The enhanced phospho-eNOS was inhibited by LY294002, indicating that the effects of LED-T on the ischemic brain could be attributed to the upregulation of eNOS phosphorylation through the phosphoinositide 3-kinase (PI3K)/Akt pathway. Moreover, no reductions in infarct or edema volume were observed in LED-T-pretreated eNOS-deficient (eNOS-/-) mice. Collectively, we found that pretreatment with LED-T reduced the amount of ischemia-induced brain damage. Importantly, we revealed that these effects were mediated by the stimulation of eNOS phosphorylation via the PI3K/Akt pathway.
Collapse
Affiliation(s)
- Hae In Lee
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Gyeongnam 50612, Republic of Korea
| | - Sae-Won Lee
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea; Graduate Training Program of Korean Medicine for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea; Korean Medical Science Research Center for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea
| | - So Young Kim
- Korean Medical Science Research Center for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea
| | - Nam Gyun Kim
- Medical Research Center of Color Seven, Seoul 06719, Republic of Korea
| | - Kyoung-Jun Park
- Medical Research Center of Color Seven, Seoul 06719, Republic of Korea
| | - Byung Tae Choi
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea; Graduate Training Program of Korean Medicine for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea; Korean Medical Science Research Center for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea
| | - Yong-Il Shin
- Department of Rehabilitation Medicine, School of Medicine, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Gyeongnam 50612, Republic of Korea.
| | - Hwa Kyoung Shin
- Department of Korean Medical Science, School of Korean Medicine, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea; Graduate Training Program of Korean Medicine for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea; Korean Medical Science Research Center for Healthy-Aging, Pusan National University, Yangsan, Gyeongnam 50612, Republic of Korea.
| |
Collapse
|
30
|
Li W, Ward R, Valenzuela JP, Dong G, Fagan SC, Ergul A. Diabetes Worsens Functional Outcomes in Young Female Rats: Comparison of Stroke Models, Tissue Plasminogen Activator Effects, and Sexes. Transl Stroke Res 2017; 8:10.1007/s12975-017-0525-7. [PMID: 28247188 PMCID: PMC5581299 DOI: 10.1007/s12975-017-0525-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 01/17/2017] [Accepted: 01/31/2017] [Indexed: 11/25/2022]
Abstract
Diabetes worsens stroke outcome and increases the risk of hemorrhagic transformation (HT) after ischemic stroke, especially with tissue plasminogen activator (tPA) treatment. The widespread use of tPA is still limited by the fear of hemorrhagic transformation (HT), and underlying mechanisms are actively being pursued in preclinical studies. However, experimental models use a 10 times higher dose of tPA than the clinical dose (10 mg/kg) and mostly employ only male animals. In this translational study, we hypothesized that low-dose tPA will improve the functional recovery after the embolic stroke in both control and diabetic male and female animals. Diabetes was induced in age-matched male and female Wistar rats with high fat diet and low-dose streptozotocin (30 mg/kg, i.p.). Embolic stroke was induced with clot occlusion of the middle cerebral artery (MCA). The animals were treated with or without tPA (1 mg/kg, i.v.) at 90 min after surgery. An additional set of animals were subjected to 90 min MCAO with suture. Neurological deficits (composite score and adhesive removal test-ART), infarct size, edema ratio, and HT index were assessed 3 days after surgery. In the control groups, female rats had smaller infarcts and better functional outcomes. tPA decreased infarct size in both sexes with a greater effect in males. While there was no difference in HT between males and females without tPA, HT was less in the female + tPA group. In the diabetic groups, neuronal injury increased in females reaching that of the infarct sizes seen in male rats. tPA decreased infarct size in females but not males. HT was greater in female rats than in males and was not further increased with tPA. Diabetes worsened neurological deficits in both sexes. Male animals showed improved sensorimotor skills, especially with tPA treatment, but there was no improvement in females. These data suggest that diabetes amplifies neurovascular injury and neurological deficits in both sexes. Human dose tPA offers some degree of protection in male but not female rats. Given that control female animals experience less injury compared to male rats, the diabetes effect is more profound in females.
Collapse
Affiliation(s)
- Weiguo Li
- Charlie Norwood Veterans Administration Medical Center, Augusta, GA, USA
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Rebecca Ward
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - John Paul Valenzuela
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Guangkuo Dong
- Charlie Norwood Veterans Administration Medical Center, Augusta, GA, USA
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Susan C Fagan
- Charlie Norwood Veterans Administration Medical Center, Augusta, GA, USA
- Program in Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia, Augusta, GA, USA
| | - Adviye Ergul
- Charlie Norwood Veterans Administration Medical Center, Augusta, GA, USA.
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA.
- Program in Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia, Augusta, GA, USA.
| |
Collapse
|
31
|
Wu T, Xiang Y, Lv Y, Li D, Yu L, Guo R. miR-590-3p mediates the protective effect of curcumin on injured endothelial cells induced by angiotensin II. Am J Transl Res 2017; 9:289-300. [PMID: 28337260 PMCID: PMC5340667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 01/31/2017] [Indexed: 06/06/2023]
Abstract
Curcumin (Cur) has multiple pharmacological effects including antitumor, anti-inflammatory, antioxidant and cardiovascular protective effects. This research aims to further explore whether the cardiovascular protective effects of Cur are mediated by the miR-590-3p/CD40 pathway. Endothelial cells (ECs) were cultivated with 10-7 mol/L angiotensin II (Ang II) to establish a damage model. Real-time PCR was used to determine the expression of CD40 and eNOS mRNA on ECs. The protein expressions of CD40 and eNOS were detected by Western blot analysis. The intracellular activities of SOD, CAT and MDA level were determined by corresponding detection kits, and the level of reactive oxygen species (ROS) in ECs was measured by ROS assay kit. Ang II increased both the mRNA and protein level of CD40, while it down-regulated the expression of eNOS at mRNA and protein level. These observations were accompanied by decreased activities of SOD and CAT with increased levels of intracellular MDA and ROS. Cur and miR-590-3p mimics inhibited the expressions of CD40 mRNA and protein induced by Ang II and alleviated the intracellular oxidative stress seen with increased levels of eNOS. However, these beneficial effects caused by Cur were partially reversed in the presence of miR-590-3p inhibitors. Our results indicate miR-590-3p is involved in the anti-inflammatory effects of Cur in ECs damaged by Ang II.
Collapse
Affiliation(s)
- Tian Wu
- Department of Pharmacy, The Third Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Yuanyuan Xiang
- Department of Pharmacy, The Third Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Yu Lv
- Department of Pharmacy, The Third Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Dai Li
- Department of Pharmacy, Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Lijin Yu
- Department of Pharmacy, The Third Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| | - Ren Guo
- Department of Pharmacy, The Third Xiangya Hospital, Central South UniversityChangsha, Hunan, China
| |
Collapse
|
32
|
Feng J, Chen X, Shen J. Reactive nitrogen species as therapeutic targets for autophagy: implication for ischemic stroke. Expert Opin Ther Targets 2017; 21:305-317. [DOI: 10.1080/14728222.2017.1281250] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jinghan Feng
- School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- The University of Hong Kong-Shenzhen Institute of Research and Innovation (HKU-SIRI), Shenzhen, China
| | - Xingmiao Chen
- School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- The University of Hong Kong-Shenzhen Institute of Research and Innovation (HKU-SIRI), Shenzhen, China
| | - Jiangang Shen
- School of Chinese Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- The University of Hong Kong-Shenzhen Institute of Research and Innovation (HKU-SIRI), Shenzhen, China
| |
Collapse
|
33
|
Vanhoutte PM, Shimokawa H, Feletou M, Tang EHC. Endothelial dysfunction and vascular disease - a 30th anniversary update. Acta Physiol (Oxf) 2017; 219:22-96. [PMID: 26706498 DOI: 10.1111/apha.12646] [Citation(s) in RCA: 556] [Impact Index Per Article: 79.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/27/2015] [Accepted: 12/17/2015] [Indexed: 02/06/2023]
Abstract
The endothelium can evoke relaxations of the underlying vascular smooth muscle, by releasing vasodilator substances. The best-characterized endothelium-derived relaxing factor (EDRF) is nitric oxide (NO) which activates soluble guanylyl cyclase in the vascular smooth muscle cells, with the production of cyclic guanosine monophosphate (cGMP) initiating relaxation. The endothelial cells also evoke hyperpolarization of the cell membrane of vascular smooth muscle (endothelium-dependent hyperpolarizations, EDH-mediated responses). As regards the latter, hydrogen peroxide (H2 O2 ) now appears to play a dominant role. Endothelium-dependent relaxations involve both pertussis toxin-sensitive Gi (e.g. responses to α2 -adrenergic agonists, serotonin, and thrombin) and pertussis toxin-insensitive Gq (e.g. adenosine diphosphate and bradykinin) coupling proteins. New stimulators (e.g. insulin, adiponectin) of the release of EDRFs have emerged. In recent years, evidence has also accumulated, confirming that the release of NO by the endothelial cell can chronically be upregulated (e.g. by oestrogens, exercise and dietary factors) and downregulated (e.g. oxidative stress, smoking, pollution and oxidized low-density lipoproteins) and that it is reduced with ageing and in the course of vascular disease (e.g. diabetes and hypertension). Arteries covered with regenerated endothelium (e.g. following angioplasty) selectively lose the pertussis toxin-sensitive pathway for NO release which favours vasospasm, thrombosis, penetration of macrophages, cellular growth and the inflammatory reaction leading to atherosclerosis. In addition to the release of NO (and EDH, in particular those due to H2 O2 ), endothelial cells also can evoke contraction of the underlying vascular smooth muscle cells by releasing endothelium-derived contracting factors. Recent evidence confirms that most endothelium-dependent acute increases in contractile force are due to the formation of vasoconstrictor prostanoids (endoperoxides and prostacyclin) which activate TP receptors of the vascular smooth muscle cells and that prostacyclin plays a key role in such responses. Endothelium-dependent contractions are exacerbated when the production of nitric oxide is impaired (e.g. by oxidative stress, ageing, spontaneous hypertension and diabetes). They contribute to the blunting of endothelium-dependent vasodilatations in aged subjects and essential hypertensive and diabetic patients. In addition, recent data confirm that the release of endothelin-1 can contribute to endothelial dysfunction and that the peptide appears to be an important contributor to vascular dysfunction. Finally, it has become clear that nitric oxide itself, under certain conditions (e.g. hypoxia), can cause biased activation of soluble guanylyl cyclase leading to the production of cyclic inosine monophosphate (cIMP) rather than cGMP and hence causes contraction rather than relaxation of the underlying vascular smooth muscle.
Collapse
Affiliation(s)
- P. M. Vanhoutte
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Pharmacology and Pharmacy; Li Ka Shing Faculty of Medicine; The University of Hong Kong; Hong Kong City Hong Kong
| | - H. Shimokawa
- Department of Cardiovascular Medicine; Tohoku University; Sendai Japan
| | - M. Feletou
- Department of Cardiovascular Research; Institut de Recherches Servier; Suresnes France
| | - E. H. C. Tang
- State Key Laboratory of Pharmaceutical Biotechnology and Department of Pharmacology and Pharmacy; Li Ka Shing Faculty of Medicine; The University of Hong Kong; Hong Kong City Hong Kong
- School of Biomedical Sciences; Li Ka Shing Faculty of Medicine; The University of Hong Kong; Hong Kong City Hong Kong
| |
Collapse
|
34
|
Kim SK, Massett MP. Genetic Regulation of Endothelial Vasomotor Function. Front Physiol 2016; 7:571. [PMID: 27932996 PMCID: PMC5122706 DOI: 10.3389/fphys.2016.00571] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 11/09/2016] [Indexed: 12/01/2022] Open
Abstract
The endothelium plays an important role in the regulation of vasomotor tone and the maintenance of vascular integrity. Endothelial dysfunction, i.e., impaired endothelial dependent dilation, is a fundamental component of the pathogenesis of cardiovascular disease. Although endothelial dysfunction is associated with a number of cardiovascular disease risk factors, those risk factors are not the only determinants of endothelial dysfunction. Despite knowing many molecules involved in endothelial signaling pathways, the genetic contribution to endothelial function has yet to be fully elucidated. This mini-review summarizes current evidence supporting the genetic contribution to endothelial vasomotor function. Findings from population-based studies, association studies for candidate genes, and unbiased large genomic scale studies in humans and rodent models are discussed. A brief synopsis of the current studies addressing the genetic regulation of endothelial responses to exercise training is also included.
Collapse
Affiliation(s)
- Seung Kyum Kim
- Department of Health and Kinesiology, Texas A&M UniversityCollege Station, TX, USA
- Tufts Medical Center, Molecular Cardiology Research InstituteBoston, MA, USA
| | - Michael P. Massett
- Department of Health and Kinesiology, Texas A&M UniversityCollege Station, TX, USA
| |
Collapse
|
35
|
Nishijima Y, Akamatsu Y, Yang SY, Lee CC, Baran U, Song S, Wang RK, Tominaga T, Liu J. Impaired Collateral Flow Compensation During Chronic Cerebral Hypoperfusion in the Type 2 Diabetic Mice. Stroke 2016; 47:3014-3021. [PMID: 27834741 DOI: 10.1161/strokeaha.116.014882] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 09/03/2016] [Accepted: 09/14/2016] [Indexed: 01/30/2023]
Abstract
BACKGROUND AND PURPOSE The presence of collaterals is associated with a reduced risk of stroke and transient ischemic attack in patients with steno-occlusive carotid artery disease. Although metabolic syndrome negatively impacts collateral status, it is unclear whether and to what extent type 2 diabetes mellitus affects cerebral collateral flow regulation during hypoperfusion. METHODS We examined the spatial and temporal changes of the leptomeningeal collateral flow and the flow dynamics of the penetrating arterioles in the distal middle cerebral artery and anterior cerebral artery branches over 2 weeks after unilateral common carotid artery occlusion (CCAO) using optical coherent tomography in db/+ and db/db mice. We also assessed the temporal adaptation of the circle of Willis after CCAO by measuring circle of Willis vessel diameters. RESULTS After unilateral CCAO, db/db mice exhibited diminished leptomeningeal collateral flow compensation compared with db/+ mice, which coincided with a reduced dilation of distal anterior cerebral artery branches, leading to reduced flow not only in pial vessels but also in penetrating arterioles bordering the distal middle cerebral artery and anterior cerebral artery. However, no apparent cell death was detected in either strain of mice during the first week after CCAO. db/db mice also experienced a more severe early reduction in the vessel diameters of several ipsilateral main feeding arteries in the circle of Willis, in addition to a delayed post-CCAO adaptive response by 1 to 2 weeks, compared with db/+ mice. CONCLUSIONS Type 2 diabetes mellitus is an additional risk factor for hemodynamic compromise during cerebral hypoperfusion, which may increase the severity and the risk of stroke or transient ischemic attack.
Collapse
Affiliation(s)
- Yasuo Nishijima
- Department of Neurological Surgery, University of California at San Francisco (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); San Francisco Veterans Affairs Medical Center, CA (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan (Y.N., Y.A., T.T.); and Departments of Bioengineering & Ophthalmology, University of Washington, Seattle (U.B., S.S., R.K.W.)
| | - Yosuke Akamatsu
- Department of Neurological Surgery, University of California at San Francisco (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); San Francisco Veterans Affairs Medical Center, CA (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan (Y.N., Y.A., T.T.); and Departments of Bioengineering & Ophthalmology, University of Washington, Seattle (U.B., S.S., R.K.W.)
| | - Shih Yen Yang
- Department of Neurological Surgery, University of California at San Francisco (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); San Francisco Veterans Affairs Medical Center, CA (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan (Y.N., Y.A., T.T.); and Departments of Bioengineering & Ophthalmology, University of Washington, Seattle (U.B., S.S., R.K.W.)
| | - Chih Cheng Lee
- Department of Neurological Surgery, University of California at San Francisco (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); San Francisco Veterans Affairs Medical Center, CA (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan (Y.N., Y.A., T.T.); and Departments of Bioengineering & Ophthalmology, University of Washington, Seattle (U.B., S.S., R.K.W.)
| | - Utku Baran
- Department of Neurological Surgery, University of California at San Francisco (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); San Francisco Veterans Affairs Medical Center, CA (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan (Y.N., Y.A., T.T.); and Departments of Bioengineering & Ophthalmology, University of Washington, Seattle (U.B., S.S., R.K.W.)
| | - Shaozhen Song
- Department of Neurological Surgery, University of California at San Francisco (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); San Francisco Veterans Affairs Medical Center, CA (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan (Y.N., Y.A., T.T.); and Departments of Bioengineering & Ophthalmology, University of Washington, Seattle (U.B., S.S., R.K.W.)
| | - Ruikang K Wang
- Department of Neurological Surgery, University of California at San Francisco (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); San Francisco Veterans Affairs Medical Center, CA (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan (Y.N., Y.A., T.T.); and Departments of Bioengineering & Ophthalmology, University of Washington, Seattle (U.B., S.S., R.K.W.)
| | - Teiji Tominaga
- Department of Neurological Surgery, University of California at San Francisco (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); San Francisco Veterans Affairs Medical Center, CA (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan (Y.N., Y.A., T.T.); and Departments of Bioengineering & Ophthalmology, University of Washington, Seattle (U.B., S.S., R.K.W.)
| | - Jialing Liu
- Department of Neurological Surgery, University of California at San Francisco (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); San Francisco Veterans Affairs Medical Center, CA (Y.N., Y.A., S.Y.Y., C.C.L., J.L.); Department of Neurosurgery, Tohoku University Graduate School of Medicine, Aoba-ku, Sendai, Japan (Y.N., Y.A., T.T.); and Departments of Bioengineering & Ophthalmology, University of Washington, Seattle (U.B., S.S., R.K.W.).
| |
Collapse
|
36
|
Mu ZH, Jiang Z, Lin XJ, Wang LP, Xi Y, Zhang ZJ, Wang YT, Yang GY. Vessel Dilation Attenuates Endothelial Dysfunction Following Middle Cerebral Artery Occlusion in Hyperglycemic Rats. CNS Neurosci Ther 2016; 22:316-24. [PMID: 26842484 DOI: 10.1111/cns.12500] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 11/26/2015] [Accepted: 11/27/2015] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES Dynamically observe cerebral vascular changes in hyperglycemic rats in vivo and explore the effect of diabetes on endothelial function after ischemic stroke. BACKGROUND Diabetes affects both large and small vessels in the brain, but the dynamic process and mechanism are unclear. METHODS We investigated the structural and functional changes of brain vasculature in living hyperglycemic rats and their impact on stroke outcomes via a novel technique: synchrotron radiation angiography. We also examined the effect of prolonged fasudil treatment on arterial reactivity and hemorrhagic transformation. Adult Sprague Dawley rats were treated by streptozotocin to induce type 1 diabetes. These hyperglycemic rats received fasudil pretreatment and then underwent transient middle cerebral artery occlusion. RESULTS We found that diabetes caused arteries narrowing in the circus Willis as early as 2 weeks after streptozotocin injection (P < 0.05). These vessels were further constricted after middle cerebral artery occlusion. L-NAME could induce regional constrictions and impaired relaxation in hyperglycemic animals. Furthermore, hemorrhagic transformation was also increased in the hyperglycemic rats compared to the control (P < 0.05). In fasudil-treated rats, the internal carotid artery narrowing was ameliorated and L-NAME-induced regional constriction was abolished. Importantly, stroke prognosis was improved in fasudil-treated rats compared to the control (P < 0.05). CONCLUSIONS Our dynamic angiographic data demonstrated that diabetes could impair the cerebral arterial reactivity. Prolonged fasudil treatment could attenuate arterial dysfunction and improve the prognosis of ischemic stroke by affecting both the large and small vasculature.
Collapse
Affiliation(s)
- Zhi-Hao Mu
- Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Zhen Jiang
- Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiao-Jie Lin
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Li-Ping Wang
- Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yan Xi
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China.,Center for Biotechnology and Interdisciplinary Studies, Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, NY, USA
| | - Zhi-Jun Zhang
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yong-Ting Wang
- Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Guo-Yuan Yang
- Department of Neurology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Med-X Research Institute and School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
37
|
Chen M, Yi B, Zhu N, Wei X, Zhang GX, Huang S, Sun J. Pim1 kinase promotes angiogenesis through phosphorylation of endothelial nitric oxide synthase at Ser-633. Cardiovasc Res 2016; 109:141-50. [PMID: 26598507 PMCID: PMC4692291 DOI: 10.1093/cvr/cvv250] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 10/28/2015] [Accepted: 11/02/2015] [Indexed: 11/14/2022] Open
Abstract
AIMS Posttranslational modification, such as phosphorylation, plays an essential role in regulating activation of endothelial NO synthase (eNOS). In the present study, we aim to determine whether eNOS could be phosphorylated and regulated by a novel serine/threonine-protein kinase Pim1 in vascular endothelial cells (ECs). METHODS AND RESULTS Using immunoprecipitation and protein kinase assays, we demonstrated that Pim1 specifically interacts with eNOS, which leads to a marked phosphorylation of eNOS at Ser-633 and increased production of nitric oxide (NO). Intriguingly, in response to VEGF stimulation, eNOS phosphorylation at Ser-633 exhibits two distinct phases: transient phosphorylation occurring between 0 and 60 min and sustained phosphorylation occurring between 2 and 24 h, which are mediated by the protein kinase A (PKA) and Pim1, respectively. Inhibiting Pim1 by either pharmacological inhibitor SMI-4a or the dominant-negative form of Pim1 markedly attenuates VEGF-induced tube formation, while Pim1 overexpression significantly increases EC tube formation and migration in an NO-dependent manner. Importantly, Pim1 expression and eNOS phosphorylation at Ser-633 were substantially decreased in high glucose-treated ECs and in the aorta of db/db diabetic mice. Increased Pim1 expression ameliorates impaired vascular angiogenesis in diabetic mice, as determined by an ex vivo aortic ring assay. CONCLUSION Our findings demonstrate Pim1 as a novel kinase that is responsible for the phosphorylation of eNOS at Ser-633 and enhances EC sprouting of aortic rings from diabetic mice, suggesting that Pim1 could potentially serve as a novel therapeutic target for revascularization strategies.
Collapse
Affiliation(s)
- Ming Chen
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Room 286G, Philadelphia, PA 19107, USA
| | - Bing Yi
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Room 286G, Philadelphia, PA 19107, USA
| | - Ni Zhu
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Room 286G, Philadelphia, PA 19107, USA
| | - Xin Wei
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Room 286G, Philadelphia, PA 19107, USA
| | - Guan-Xin Zhang
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Room 286G, Philadelphia, PA 19107, USA The Institute of Cardiothoracic Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Shengdong Huang
- The Institute of Cardiothoracic Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Jianxin Sun
- Center for Translational Medicine, Thomas Jefferson University, 1020 Locust Street, Room 286G, Philadelphia, PA 19107, USA The Institute of Cardiothoracic Surgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| |
Collapse
|
38
|
Prakash K, Chandran DS, Khadgawat R, Jaryal AK, Deepak KK. Correlations between endothelial function in the systemic and cerebral circulation and insulin resistance in type 2 diabetes mellitus. Diab Vasc Dis Res 2016; 13:49-55. [PMID: 26408643 DOI: 10.1177/1479164115604120] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Insulin resistance is associated with endothelial dysfunction in type 2 diabetes mellitus, which can lead to impaired vascular reactivities of both systemic and cerebral circulations. Appropriate 'correction' of vascular reactivity results for non-endothelium-dependent systemic effects avoids misinterpretation of endothelial function. Therefore, we 'corrected' vascular reactivity results and explored the potential correlations between systemic vascular reactivity, cerebrovascular reactivity and insulin resistance. In 34 patients, 'systemic vascular reactivity' was assessed by quantifying reactive hyperaemia. Cerebrovascular reactivity was assessed by quantifying changes in cerebral blood flow velocity during hypercapnia. To minimize the influence of non-endothelium-dependent systemic effects on vascular reactivity results, 'corrected systemic vascular reactivity' was calculated by normalizing systemic vascular reactivity using the measurements from the contralateral side; and cerebrovascular reactivity results were corrected by calculating percentage and absolute changes in cerebrovascular conductance index ('percent cerebrovascular conductance index' and 'delta cerebrovascular conductance index', respectively). Insulin resistance was estimated by homeostatic model assessment. Correlation between conventional cerebrovascular reactivity and systemic vascular reactivity was not significant. But correlations between 'corrected systemic vascular reactivity' and 'percent cerebrovascular conductance index' (r = 0.51; p = 0.002) and 'corrected systemic vascular reactivity' and 'delta cerebrovascular conductance index' (r = 0.50; p = 0.003) were significant. Among all vascular reactivity parameters, only 'delta cerebrovascular conductance index' was significantly correlated with homeostatic model assessment of insulin resistance (r = -0.38; p = 0.029). In conclusion, endothelial function in the systemic and cerebral circulations is moderately correlated, provided that vascular reactivity estimates are corrected for non-endothelium-dependent influences.
Collapse
Affiliation(s)
- Kiran Prakash
- Department of Physiology, All India Institute of Medical Sciences, New Delhi, India Department of Physiology, Government Medical College & Hospital, Chandigarh, India
| | - Dinu S Chandran
- Department of Physiology, All India Institute of Medical Sciences, New Delhi, India
| | - Rajesh Khadgawat
- Department of Endocrinology & Metabolism, All India Institute of Medical Sciences, New Delhi, India
| | - Ashok Kumar Jaryal
- Department of Physiology, All India Institute of Medical Sciences, New Delhi, India
| | - Kishore K Deepak
- Department of Physiology, All India Institute of Medical Sciences, New Delhi, India
| |
Collapse
|
39
|
Villalba N, Sonkusare SK, Longden TA, Tran TL, Sackheim AM, Nelson MT, Wellman GC, Freeman K. Traumatic brain injury disrupts cerebrovascular tone through endothelial inducible nitric oxide synthase expression and nitric oxide gain of function. J Am Heart Assoc 2015; 3:e001474. [PMID: 25527626 PMCID: PMC4338739 DOI: 10.1161/jaha.114.001474] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Traumatic brain injury (TBI) has been reported to increase the concentration of nitric oxide (NO) in the brain and can lead to loss of cerebrovascular tone; however, the sources, amounts, and consequences of excess NO on the cerebral vasculature are unknown. Our objective was to elucidate the mechanism of decreased cerebral artery tone after TBI. METHODS AND RESULTS Cerebral arteries were isolated from rats 24 hours after moderate fluid‐percussion TBI. Pressure‐induced increases in vasoconstriction (myogenic tone) and smooth muscle Ca2+ were severely blunted in cerebral arteries after TBI. However, myogenic tone and smooth muscle Ca2+ were restored by inhibition of NO synthesis or endothelium removal, suggesting that TBI increased endothelial NO levels. Live native cell NO, indexed by 4,5‐diaminofluorescein (DAF‐2 DA) fluorescence, was increased in endothelium and smooth muscle of cerebral arteries after TBI. Clamped concentrations of 20 to 30 nmol/L NO were required to simulate the loss of myogenic tone and increased (DAF‐2T) fluorescence observed following TBI. In comparison, basal NO in control arteries was estimated as 0.4 nmol/L. Consistent with TBI causing enhanced NO‐mediated vasodilation, inhibitors of guanylyl cyclase, protein kinase G, and large‐conductance Ca2+‐activated potassium (BK) channel restored function of arteries from animals with TBI. Expression of the inducible isoform of NO synthase was upregulated in cerebral arteries isolated from animals with TBI, and the inducible isoform of NO synthase inhibitor 1400W restored myogenic responses following TBI. CONCLUSIONS The mechanism of profound cerebral artery vasodilation after TBI is a gain of function in vascular NO production by 60‐fold over controls, resulting from upregulation of the inducible isoform of NO synthase in the endothelium.
Collapse
Affiliation(s)
- Nuria Villalba
- From the Departments of Pharmacology, University of Vermont, Burlington, VT
| | | | | | | | | | | | | | | |
Collapse
|
40
|
Guo J, Breen DM, Pereira TJ, Dalvi PS, Zhang H, Mori Y, Ghanim H, Tumiati L, Fantus IG, Bendeck MP, Dandona P, Rao V, Dolinsky VW, Heximer SP, Giacca A. The effect of insulin to decrease neointimal growth after arterial injury is endothelial nitric oxide synthase-dependent. Atherosclerosis 2015; 241:111-20. [DOI: 10.1016/j.atherosclerosis.2015.04.799] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 04/02/2015] [Accepted: 04/19/2015] [Indexed: 12/01/2022]
|
41
|
Impaired leptomeningeal collateral flow contributes to the poor outcome following experimental stroke in the Type 2 diabetic mice. J Neurosci 2015; 35:3851-64. [PMID: 25740515 DOI: 10.1523/jneurosci.3838-14.2015] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Collateral status is an independent predictor of stroke outcome. However, the spatiotemporal manner in which collateral flow maintains cerebral perfusion during cerebral ischemia is poorly understood. Diabetes exacerbates ischemic brain damage, although the impact of diabetes on collateral dynamics remains to be established. Using Doppler optical coherent tomography, a robust recruitment of leptomeningeal collateral flow was detected immediately after middle cerebral artery (MCA) occlusion in C57BL/6 mice, and it continued to grow over the course of 1 week. In contrast, an impairment of collateral recruitment was evident in the Type 2 diabetic db/db mice, which coincided with a worse stroke outcome compared with their normoglycemic counterpart db/+, despite their equally well-collateralized leptomeningeal anastomoses. Similar to the wild-type mice, both db/+ and db/db mice underwent collateral growth 7 d after MCA stroke, although db/db mice still exhibited significantly reduced retrograde flow into the MCA territory chronically. Acutely induced hyperglycemia in the db/+ mice did not impair collateral flow after stroke, suggesting that the state of hyperglycemia alone was not sufficient to impact collateral flow. Human albumin was efficacious in improving collateral flow and outcome after stroke in the db/db mice, enabling perfusion to proximal MCA territory that was usually not reached by retrograde flow from anterior cerebral artery without treatment. Our results suggest that the impaired collateral status contributes to the exacerbated ischemic injury in mice with Type 2 diabetes, and modulation of collateral flow has beneficial effects on stroke outcome among these subjects.
Collapse
|
42
|
Abstract
Despite the wealth of pre-clinical support for a role for reactive oxygen and nitrogen species (ROS/RNS) in the aetiology of diabetic complications, enthusiasm for antioxidant therapeutic approaches has been dampened by less favourable outcomes in large clinical trials. This has necessitated a re-evaluation of pre-clinical evidence and a more rational approach to antioxidant therapy. The present review considers current evidence, from both pre-clinical and clinical studies, to address the benefits of antioxidant therapy. The main focus of the present review is on the effects of direct targeting of ROS-producing enzymes, the bolstering of antioxidant defences and mechanisms to improve nitric oxide availability. Current evidence suggests that a more nuanced approach to antioxidant therapy is more likely to yield positive reductions in end-organ injury, with considerations required for the types of ROS/RNS involved, the timing and dosage of antioxidant therapy, and the selective targeting of cell populations. This is likely to influence future strategies to lessen the burden of diabetic complications such as diabetes-associated atherosclerosis, diabetic nephropathy and diabetic retinopathy.
Collapse
|
43
|
Nishijima Y, Akamatsu Y, Weinstein PR, Liu J. Collaterals: Implications in cerebral ischemic diseases and therapeutic interventions. Brain Res 2015; 1623:18-29. [PMID: 25770816 DOI: 10.1016/j.brainres.2015.03.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 02/27/2015] [Accepted: 03/03/2015] [Indexed: 02/09/2023]
Abstract
Despite the tremendous progress made in the treatment of cerebrovascular occlusive diseases, many patients suffering from ischemic brain injury still experience dismal outcomes. Although rehabilitation contributes to post-stroke functional recovery, there is no doubt that interventions that promote the restoration of blood supply are proven to minimize ischemic injury and improve recovery. In response to the acutely decreased blood perfusion during arterial occlusion, arteriogenesis, the compensation of blood flow through the collateral circulation during arterial obstructive diseases can act not only in a timely fashion but also much more efficiently compared to angiogenesis, the sprouting of new capillaries, and a mechanism occurring in a delayed fashion while increases the total resistance of the vascular bed of the affected territory. Interestingly, despite the vast differences between the two vascular remodeling mechanisms, some crucial growth factors and cytokines involved in angiogenesis are also required for arteriogenesis. Understanding the mechanisms underlying vascular remodeling after ischemic brain injury is a critical step towards the development of effective therapies for ischemic stroke. The present article will discuss our current views in vascular remodeling acutely after brain ischemia, namely arteriogenesis, and some relevant clinical therapies available on the horizon in augmenting collateral flow that hold promise in treating ischemic brain injury. This article is part of a Special Issue entitled SI: Cell Interactions In Stroke.
Collapse
Affiliation(s)
- Yasuo Nishijima
- Department of Neurological Surgery, UCSF, San Francisco, CA 94121, USA; SFVAMC, San Francisco, CA 94121, USA; Department of Neurosurgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | - Yosuke Akamatsu
- Department of Neurological Surgery, UCSF, San Francisco, CA 94121, USA; SFVAMC, San Francisco, CA 94121, USA; Department of Neurosurgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan
| | - Phillip R Weinstein
- Department of Neurological Surgery, UCSF, San Francisco, CA 94121, USA; SFVAMC, San Francisco, CA 94121, USA
| | - Jialing Liu
- Department of Neurological Surgery, UCSF, San Francisco, CA 94121, USA; SFVAMC, San Francisco, CA 94121, USA.
| |
Collapse
|
44
|
Poittevin M, Bonnin P, Pimpie C, Rivière L, Sebrié C, Dohan A, Pocard M, Charriaut-Marlangue C, Kubis N. Diabetic microangiopathy: impact of impaired cerebral vasoreactivity and delayed angiogenesis after permanent middle cerebral artery occlusion on stroke damage and cerebral repair in mice. Diabetes 2015; 64:999-1010. [PMID: 25288671 DOI: 10.2337/db14-0759] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Diabetes increases the risk of stroke by three, increases related mortality, and delays recovery. We aimed to characterize functional and structural alterations in cerebral microvasculature before and after experimental cerebral ischemia in a mouse model of type 1 diabetes. We hypothesized that preexisting brain microvascular disease in patients with diabetes might partly explain increased stroke severity and impact on outcome. Diabetes was induced in 4-week-old C57Bl/6J mice by intraperitoneal injections of streptozotocin (60 mg/kg). After 8 weeks of diabetes, the vasoreactivity of the neurovascular network to CO2 was abolished and was not reversed by nitric oxide (NO) donor administration; endothelial NO synthase (eNOS) and neuronal NO synthase (nNOS) mRNA, phospho-eNOS protein, nNOS, and phospho-nNOS protein were significantly decreased; angiogenic and vessel maturation factors (vascular endothelial growth factor a [VEGFa], angiopoietin 1 (Ang1), Ang2, transforming growth factor-β [TGF-β], and platelet-derived growth factor-β [PDGF-β]) and blood-brain barrier (BBB) occludin and zona occludens 1 (ZO-1) expression were significantly decreased; and microvessel density was increased without changes in ultrastructural imaging. After permanent focal cerebral ischemia induction, infarct volume and neurological deficit were significantly increased at D1 and D7, and neuronal death (TUNEL+ / NeuN+ cells) and BBB permeability (extravasation of Evans blue) at D1. At D7, CD31+ / Ki67+ double-immunolabeled cells and VEGFa and Ang2 expression were significantly increased, indicating delayed angiogenesis. We show that cerebral microangiopathy thus partly explains stroke severity in diabetes.
Collapse
Affiliation(s)
- Marine Poittevin
- Université Paris Diderot, Sorbonne Paris Cité, Angiogenesis and Translational Research Center, INSERM U965, Paris, France
| | - Philippe Bonnin
- Université Paris Diderot, Sorbonne Paris Cité, Angiogenesis and Translational Research Center, INSERM U965, Paris, France Service de Physiologie Clinique, AP-HP, Hôpital Lariboisière, Paris, France
| | - Cynthia Pimpie
- Université Paris Diderot, Sorbonne Paris Cité, Angiogenesis and Translational Research Center, INSERM U965, Paris, France
| | - Léa Rivière
- Université Paris Diderot, Sorbonne Paris Cité, Angiogenesis and Translational Research Center, INSERM U965, Paris, France
| | | | - Anthony Dohan
- Université Paris Diderot, Sorbonne Paris Cité, Angiogenesis and Translational Research Center, INSERM U965, Paris, France
| | - Marc Pocard
- Université Paris Diderot, Sorbonne Paris Cité, Angiogenesis and Translational Research Center, INSERM U965, Paris, France
| | | | - Nathalie Kubis
- Université Paris Diderot, Sorbonne Paris Cité, Angiogenesis and Translational Research Center, INSERM U965, Paris, France Service de Physiologie Clinique, AP-HP, Hôpital Lariboisière, Paris, France
| |
Collapse
|
45
|
Herson PS, Traystman RJ. Animal models of stroke: translational potential at present and in 2050. FUTURE NEUROLOGY 2014; 9:541-551. [PMID: 25530721 DOI: 10.2217/fnl.14.44] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Translation from basic science bench research in ischemic stroke to bedside treatment of patients suffering ischemic stroke remains a difficult challenge. Despite literally hundreds of compounds and interventions that provide benefit in experimental models of cerebral ischemia, efficacy in humans remains to be demonstrated. The reasons for failure to translate the extensive positive basic science findings to successful clinical trials have been the focus of discussion for years. Some attribute the failure to flaws in clinical trial design, others question the predictive value of current animal models and some question the quality of preclinical data. It is likely that a combination of all these shortcomings have ultimately led to the failure. The purpose of this review is to analyze the commonly used animal models used in the field today, provide a framework for understanding the current state of basic science research in the ischemic stroke field and discuss a path forward.
Collapse
Affiliation(s)
- Paco S Herson
- Department of Pharmacology, University of Colorado Denver, Anschutz Medical Campus, 12800 E 19th Avenue, Aurora, CO 80045, USA ; Department of Anesthesiology, University of Colorado Denver, Anschutz Medical Campus, 12800 E 19th Avenue, Aurora, CO 80045, USA
| | - Richard J Traystman
- Department of Pharmacology, University of Colorado Denver, Anschutz Medical Campus, 12800 E 19th Avenue, Aurora, CO 80045, USA ; Department of Anesthesiology, University of Colorado Denver, Anschutz Medical Campus, 12800 E 19th Avenue, Aurora, CO 80045, USA
| |
Collapse
|
46
|
Sansbury BE, Hill BG. Regulation of obesity and insulin resistance by nitric oxide. Free Radic Biol Med 2014; 73:383-99. [PMID: 24878261 PMCID: PMC4112002 DOI: 10.1016/j.freeradbiomed.2014.05.016] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/16/2014] [Accepted: 05/17/2014] [Indexed: 02/07/2023]
Abstract
Obesity is a risk factor for developing type 2 diabetes and cardiovascular disease and has quickly become a worldwide pandemic with few tangible and safe treatment options. Although it is generally accepted that the primary cause of obesity is energy imbalance, i.e., the calories consumed are greater than are utilized, understanding how caloric balance is regulated has proven a challenge. Many "distal" causes of obesity, such as the structural environment, occupation, and social influences, are exceedingly difficult to change or manipulate. Hence, molecular processes and pathways more proximal to the origins of obesity-those that directly regulate energy metabolism or caloric intake-seem to be more feasible targets for therapy. In particular, nitric oxide (NO) is emerging as a central regulator of energy metabolism and body composition. NO bioavailability is decreased in animal models of diet-induced obesity and in obese and insulin-resistant patients, and increasing NO output has remarkable effects on obesity and insulin resistance. This review discusses the role of NO in regulating adiposity and insulin sensitivity and places its modes of action into context with the known causes and consequences of metabolic disease.
Collapse
Affiliation(s)
- Brian E Sansbury
- Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville School of Medicine, Louisville, KY 40202, USA; Department of Physiology and Biophysics, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Bradford G Hill
- Diabetes and Obesity Center, Institute of Molecular Cardiology, University of Louisville School of Medicine, Louisville, KY 40202, USA; Department of Physiology and Biophysics, University of Louisville School of Medicine, Louisville, KY 40202, USA; Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, Louisville, KY 40202, USA.
| |
Collapse
|
47
|
Deng J, Zhang J, Feng C, Xiong L, Zuo Z. Critical role of matrix metalloprotease-9 in chronic high fat diet-induced cerebral vascular remodelling and increase of ischaemic brain injury in mice†. Cardiovasc Res 2014; 103:473-84. [PMID: 24935427 DOI: 10.1093/cvr/cvu154] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
AIMS About one-third of American adults and 20% of teenagers are obese. Obesity and its associated metabolic disturbances including hyperlipidaemia are risk factors for cardiovascular diseases including stroke. They can worsen neurological outcome after stroke. We determined whether obesity and hyperlipidaemia could induce cerebral vascular remodelling via matrix metalloproteases (MMP) and whether this remodelling affected neurological outcome after brain ischaemia. METHODS AND RESULTS Six-week-old male CD1, C57BL/6J, and MMP-9(-/-) mice were fed regular diet (RD) or high-fat diet (HFD) for 10 weeks. They were subjected to vascular casting or a 90 min middle cerebral arterial occlusion (MCAO). Mice on HFD were heavier and had higher blood glucose and lipid levels than those on RD. HFD-fed CD1 and C57BL/6J mice had an increased cerebral vascular tortuosity index and decreased inner diameters of the middle cerebral arterial root. HFD increased microvessel density in CD1 mouse cerebral cortex. After MCAO, CD1 and C57BL/6J mice on HFD had a bigger infarct volume, more severe brain oedema and blood-brain barrier damage, higher haemorrhagic transformation rate, greater haemorrhagic volume, and worse neurological function. HFD increased MMP-9 activity in the ischaemic and non-ischaemic brain tissues. Although HFD increased the body weights, blood glucose, and lipid levels in the MMP-9(-/-) mice on a C57BL/6J genetic background, the HFD-induced cerebral vascular remodelling and worsening of neurological outcome did not occur in these mice. CONCLUSION HFD induces cerebral vascular remodelling and worsens neurological outcome after transient focal brain ischaemia. MMP-9 activation plays a critical role in these HFD effects.
Collapse
Affiliation(s)
- Jiao Deng
- Department of Anesthesiology, University of Virginia, 1 Hospital Drive, PO Box 800710, Charlottesville, VA 22908-0710, USA Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, People's Republic of China
| | - Junfeng Zhang
- Department of Anesthesiology, University of Virginia, 1 Hospital Drive, PO Box 800710, Charlottesville, VA 22908-0710, USA
| | - Chenzhuo Feng
- Department of Anesthesiology, University of Virginia, 1 Hospital Drive, PO Box 800710, Charlottesville, VA 22908-0710, USA
| | - Lize Xiong
- Department of Anesthesiology, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, Shaanxi, People's Republic of China
| | - Zhiyi Zuo
- Department of Anesthesiology, University of Virginia, 1 Hospital Drive, PO Box 800710, Charlottesville, VA 22908-0710, USA
| |
Collapse
|
48
|
Bai YY, Gao X, Wang YC, Peng XG, Chang D, Zheng S, Li C, Ju S. Image-guided pro-angiogenic therapy in diabetic stroke mouse models using a multi-modal nanoprobe. Theranostics 2014; 4:787-97. [PMID: 24955140 PMCID: PMC4063977 DOI: 10.7150/thno.9525] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 04/29/2014] [Indexed: 12/18/2022] Open
Abstract
Purpose: The efficacy of pro-angiogenic therapy is difficult to evaluate with current diagnostic modalities. The objectives were to develop a non-invasive imaging strategy to define the temporal characteristics of angiogenesis and to evaluate the response to pro-angiogenic therapy in diabetic stroke mouse models. Methods: A home-made ανβ3 integrin-targeted multi-modal nanoprobe was intravenously injected into mouse models at set time points after photothrombotic stroke. Magnetic resonance imaging (MRI) and near-infrared fluorescence (NIRF) imaging were carried out at 24 h post-injection. Bone marrow-derived endothelial progenitor cells (EPCs) were infused into the mouse models of ischemic stroke to stimulate angiogenesis. Results: The peak signal intensity in the ischemic-angiogenic area of diabetic and wild-type mouse models was achieved on day 10, with significantly lower signal enhancement observed in the diabetic models. Although the signal intensity was significantly higher after EPC treatment in both models, the enhancement was less pronounced in the diabetic animals compared with the wild-type controls. Histological analysis revealed that the microvessel density and expression of β3 integrin were correlated with the signal intensity assessed with MRI and NIRF imaging. Conclusions: The non-invasive imaging method could be used for early and accurate evaluation of the response to pro-angiogenic therapy in diabetic stroke models.
Collapse
|
49
|
Abstract
The prevalence of obesity has increased remarkably in the past four decades. Because obesity can promote the development of type 2 diabetes and cardiovascular disease, understanding the mechanisms that engender weight gain and discovering safe antiobesity therapies are of critical importance. In particular, the gaseous signaling molecule, nitric oxide (NO), appears to be a central factor regulating adiposity and systemic metabolism. Obese and diabetic states are characterized by a deficit in bioavailable NO, with such decreases commonly attributed to downregulation of endothelial NO synthase (eNOS), loss of eNOS activity, or quenching of NO by its reaction with oxygen radicals. Gain-of-function studies, in which vascular-derived NO has been increased pharmacologically or genetically, reveal remarkable actions of NO on body composition and systemic metabolism. This review addresses the metabolic actions of eNOS and the potential therapeutic utility of harnessing its antiobesogenic effects.
Collapse
Affiliation(s)
- Brian E Sansbury
- Diabetes and Obesity Center, Institute of Molecular Cardiology, Louisville, Kentucky, USA; Department of Physiology and Biophysics, Louisville, Kentucky, USA
| | - Bradford G Hill
- Diabetes and Obesity Center, Institute of Molecular Cardiology, Louisville, Kentucky, USA; Department of Physiology and Biophysics, Louisville, Kentucky, USA; Department of Biochemistry and Molecular Biology, University of Louisville School of Medicine, Louisville, Kentucky, USA.
| |
Collapse
|