1
|
Zhang S, Huang Q, Wang Q, Wang Q, Cao X, Zhao L, Xu N, Zhuge Z, Mao J, Fu X, Liu R, Wilcox CS, Patzak A, Li L, Lai EY. Enhanced Renal Afferent Arteriolar Reactive Oxygen Species and Contractility to Endothelin-1 Are Associated with Canonical Wnt Signaling in Diabetic Mice. Kidney Blood Press Res 2018; 43:860-871. [PMID: 29870994 PMCID: PMC6050514 DOI: 10.1159/000490334] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 05/24/2018] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND/AIMS Canonical Wnt signaling is involved in oxidative stress, vasculopathy and diabetes mellitus but its role in diabetic renal microvascular dysfunction is unclear. We tested the hypothesis that enhanced canonical Wnt signaling in renal afferent arterioles from diabetic mice increases reactive oxygen species (ROS) and contractions to endothelin-1 (ET-1). METHODS Streptozotocin-induced diabetes or control C57Bl/6 mice received vehicle or sulindac (40 mg·kg-1·day-1) to block Wnt signaling for 4 weeks. ET-1 contractions were measured by changes of afferent arteriolar diameter. Arteriolar H2O2, O2 -, protein expression and enzymatic activity were assessed using sensitive fluorescence probes, immunoblotting and colorimetric assay separately. RESULTS Compared to control, diabetic mouse afferent arteriole had increased O2- (+ 84%) and H2O2 (+ 91%) and enhanced responses to ET-1 at 10-8 mol·l-1 (-72±4% of versus -43±4%, P< 0.05) accompanied by reduced protein expressions and activities for catalase and superoxide dismutase 2 (SOD2). Arteriolar O2 - was increased further by ET-1 and contractions to ET-1 reduced by PEG-SOD in both groups whereas H2O2 unchanged by ET-1 and contractions were reduced by PEG-catalase selectively in diabetic mice. The Wnt signaling protein β-catenin was upregulated (3.3-fold decrease in p-β-catenin/β-catenin) while the glycogen synthase kinase-3β (GSK-3β) was downregulated (2.6-fold increase in p-GSK-3β/ GSK-3β) in preglomerular vessels of diabetic mice. Sulindac normalized the Wnt signaling proteins, arteriolar O2 -, H2O2 and ET-1 contractions while doubling microvascular catalase and SOD2 expression in diabetic mice. CONCLUSION Increased ROS, notably H2O2 contributes to enhanced afferent arteriolar responses to ET-1 in diabetes, which is closely associated with Wnt signaling. Antioxidant pharmacological strategies targeting Wnt signaling may improve vascular function in diabetic nephropathy.
Collapse
Affiliation(s)
- Suping Zhang
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qian Huang
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Department of Physiology, Quanzhou Medical College, Quanzhou, China
| | - Qiaoling Wang
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Qin Wang
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoyun Cao
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Liang Zhao
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Nan Xu
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhengbing Zhuge
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jianhua Mao
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaodong Fu
- Department of Physiology, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Ruisheng Liu
- Department of Molecular Pharmacology & Physiology, University of South Florida College of Medicine, Tampa, Florida, USA
| | - Christopher S Wilcox
- Division of Nephrology and Hypertension, and Hypertension Center, Georgetown University, Washington, District of Columbia, USA
| | - Andreas Patzak
- Institute of Vegetative Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Lingli Li
- Division of Nephrology and Hypertension, and Hypertension Center, Georgetown University, Washington, District of Columbia, USA
| | - En Yin Lai
- Department of Physiology, and the Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China,
- Division of Nephrology and Hypertension, and Hypertension Center, Georgetown University, Washington, District of Columbia, USA,
| |
Collapse
|
2
|
Dong Z, Gong K, Huang D, Zhu W, Sun W, Zhang Y, Xin P, Shen Y, Wu P, Li J, Lu Z, Zhang X, Wei M. Myocardial infarction accelerates glomerular injury and microalbuminuria in diabetic rats via local hemodynamics and immunity. Int J Cardiol 2014; 179:397-408. [PMID: 25464495 DOI: 10.1016/j.ijcard.2014.11.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2014] [Revised: 11/02/2014] [Accepted: 11/04/2014] [Indexed: 02/08/2023]
Abstract
BACKGROUND Clinically, approximately one-third of patients with chronic heart failure (CHF) exhibit some degree of renal dysfunction. This renal dysfunction is referred to as cardiorenal syndrome (CRS) and plays an important role in the poor prognosis of CHF. Mounting evidence suggests that diabetes is the most common underlying risk factor for CRS. However, the underlying pathophysiological mechanisms are poorly understood. METHODS We performed the following comparisons in two separate protocols: 1) surgically induced myocardial infarction rats (MI, n=10), sham operation rats (Ctr, n=10) and MI rats treated with Fasudil, a Rho-kinase inhibitor (MI+Fas, n=9); and 2) STZ-induced type 1 diabetic rats (DB, n=10), DB+MI rats (n=10) and DB+MI rats treated with Fasudil (DB+MI+Fas, n=9). Renal hemodynamics and vasoconstrictor reactivity were evaluated using the DMT myograph system. Renal immunity was evaluated by flow cytometry, electron microscopy, immunofluorescence, etc. RESULTS Twelve weeks after the operation, compared with DB or MI rats, DB+MI rats exhibited the following characteristics: 1) significantly increased glomerular enlargement, fibrosis, glomerulosclerosis, podocyte injury and microalbuminuria; 2) significantly increased vasoconstrictor reactivity of the renal interlobular arteries and renal venous pressure; 3) significantly increased infiltration of CD₃+ and CD₄+ T cells and decreased Treg/Th17 ratios; and 4) significantly increased glomerular deposition of IgG and C₄. In contrast, rats with MI only showed mildly accelerated glomerular remodeling and microalbuminuria, with little change in renal hemodynamics and immunity. Fasudil treatment significantly improved the renal lesions in DB+MI rats but not MI rats. CONCLUSIONS Post-MI cardiac dysfunction significantly accelerated glomerular remodeling, podocyte injury and microalbuminuria in STZ-induced diabetic rats. These changes were accompanied by altered local hemodynamics and immunity.
Collapse
Affiliation(s)
- Zhifeng Dong
- Department of Cardiology, Shanghai Sixth Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Kaizheng Gong
- Department of Cardiology, The Second Clinical Medical College, Yangzhou University, Yangzhou 225001, China
| | - Dong Huang
- Department of Cardiology, Shanghai Sixth Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Wei Zhu
- Department of Cardiology, Shanghai Sixth Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Wanfeng Sun
- Affiliated Yancheng Hospital of Medical School, Southeast University, Yancheng 224001, China
| | - Ying Zhang
- Institut Pasteur of Shanghai, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Ping Xin
- Department of Cardiology, Shanghai Sixth Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Yuan Shen
- Affiliated Yancheng Hospital of Medical School, Southeast University, Yancheng 224001, China
| | - Penglong Wu
- Department of Cardiology, Shanghai Sixth Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Jingbo Li
- Department of Cardiology, Shanghai Sixth Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Zhigang Lu
- Department of Cardiology, Shanghai Sixth Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200233, China
| | - Xiaoming Zhang
- Institut Pasteur of Shanghai, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.
| | - Meng Wei
- Department of Cardiology, Shanghai Sixth Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200233, China.
| |
Collapse
|
3
|
Nobe K, Takenouchi Y, Kasono K, Hashimoto T, Honda K. Two Types of Overcontraction Are Involved in Intrarenal Artery Dysfunction in Type II Diabetic Mouse. J Pharmacol Exp Ther 2014; 351:77-86. [DOI: 10.1124/jpet.114.216747] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
|
4
|
Al Lafi SM, Artinian SB, Boutary SS, Zwainy NS, Bitar KM, Bikhazi AB. Aliskiren, exendin-4, and insulin: their impact on endothelin receptor subtype(s) regulation/binding in type 1 diabetic rat hearts. Can J Physiol Pharmacol 2013; 91:830-8. [DOI: 10.1139/cjpp-2013-0095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study focuses on the impact of aliskiren and (or) glucagon-like peptide-1 analogue on the binding affinity/regulation of endothelin-1 (ET-1) to its receptor subtypes A (ETAR) and B (ETBR) at the level of the coronary endothelium and the cardiomyocytes in a type-1 diabetic rat model. Seven groups were used: (i) normal rats, (ii) rats with induced diabetes, (iii) rats with induced diabetes that were treated with insulin, (iv) rats with induced diabetes that were treated with exendin-4, (v) rats with induced diabetes that were treated with aliskiren, (vi) rats with induced diabetes that were co-treated with insulin plus aliskiren, and (vii) rats with induced diabetes that were co-treated with exendin-4 plus aliskiren. Heart perfusion with [125I]-ET-1 was employed to estimate ET-1 binding affinity (τ = 1/K–n) to ETAR and ETBR at the level of the coronary endothelium and the cardiomyocytes. Plasma ET-1 levels were measured using enzyme immunoassay, whereas densities of ETAR and ETBR were detected using Western blot. No significance differences were detected in the τ of ETAR and ETBR between normal and diabetic in cardiomyocytes and the coronary endothelium. Exendin-4 normalized the τ value for ETAR and ETBR on coronary endothelium, while aliskiren normalized it on cardiomyocytes. Furthermore, ETAR and ETBR densities were normalized with monotreatments of aliskiren and exendin-4, compared with up-regulated ETAR and down-regulated ETBR band densities in the diabetic animals. Our data indicate that aliskiren alleviates diabetes-associated hypertrophy in type 1 diabetes mellitus.
Collapse
Affiliation(s)
- Sawsan M. Al Lafi
- Department of Anatomy, Cell Biology and Physiology, Faculty of Medicine, American University of Beirut, Beirut 11-0236, Lebanon
| | - Shushan B. Artinian
- Department of Anatomy, Cell Biology and Physiology, Faculty of Medicine, American University of Beirut, Beirut 11-0236, Lebanon
| | - Suzan S. Boutary
- Department of Anatomy, Cell Biology and Physiology, Faculty of Medicine, American University of Beirut, Beirut 11-0236, Lebanon
| | - Nadine S. Zwainy
- Department of Anatomy, Cell Biology and Physiology, Faculty of Medicine, American University of Beirut, Beirut 11-0236, Lebanon
| | - Khalil M. Bitar
- Department of Physics, Faculty of Arts and Sciences, American University of Beirut, Beirut 11-0236, Lebanon
| | - Anwar B. Bikhazi
- Department of Anatomy, Cell Biology and Physiology, Faculty of Medicine, American University of Beirut, Beirut 11-0236, Lebanon
| |
Collapse
|
5
|
Wang M, Zhang WB, Zhu JH, Fu GS, Zhou BQ. Breviscapine ameliorates cardiac dysfunction and regulates the myocardial Ca(2+)-cycling proteins in streptozotocin-induced diabetic rats. Acta Diabetol 2010; 47 Suppl 1:209-18. [PMID: 19882101 DOI: 10.1007/s00592-009-0164-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2009] [Accepted: 10/08/2009] [Indexed: 01/11/2023]
Abstract
To investigate the influence of breviscapine on the cardiac structure and function in diabetic cardiomyopathy rats as well as the expression of protein kinase C (PKC) and Ca(2+)-cycling proteins expression. Diabetes was induced in male Sprague-Dawley rats by a single intraperitoneal injection of streptozotocin and the control rats were injected with saline. After the induction of diabetes for 4 weeks, the animals were divided into different groups: (1) normal rats as control; (2) diabetic rats; (3) diabetic rats with administration of breviscapine (10 or 25 mg kg(-1) day(-2)). After treatment with breviscapine for 6 weeks, the invasive cardiac function and echocardiographic parameters were measured, and heart tissue was obtained for electron microscope study. The expression of protein kinase C (PKC) and calcium handling regulators, such as protein phosphatase inhibitor-1 (PPI-1), phospholamban (PLB) and Ca(2+)-ATPase (SERCA-2), ryanodine receptor (RyR) were detected by western blot or RT-PCR. The activity of SERCA-2 was measured using Ca(2+)-ATPase kit. Diabetic rats showed impaired cardiac structure and function compared with control rats. The expression of PKC, PLB increased significantly, while the PPI-1, SERCA-2 and RyR expression decreased. Treatment with breviscapine could reverse the cardiac dysfunction and structure changes in diabetic cardiomyopathy rats, and decrease the expression of PKC and PLB, as well as increase the expression of PPI-1, SERCA-2 and RyR. The protective effect of breviscapine was dose related. This study showed that breviscapine could regulate the expression of PKC, PPI-1, PLB and SERCA-2 and have protective effect on diabetic cardiomyopathy.
Collapse
Affiliation(s)
- Min Wang
- Key Laboratory of Biotherapy of Zhejiang Province, Department of Cardiovascular Diseases, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, 3 East Qingchun Road, 310016, Hangzhou, Zhejiang Province, People's Republic of China.
| | | | | | | | | |
Collapse
|
6
|
Yousif MHM. Phosphoinositide 3-kinase contributes to diabetes-induced abnormal vascular reactivity in rat perfused mesenteric bed. Cell Biochem Funct 2008; 26:451-8. [PMID: 18464293 DOI: 10.1002/cbf.1463] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Phosphatidylinositol 3-kinase (PI3K) is a signaling enzyme that plays key roles in vascular growth, proliferation, and cellular apoptosis and is implicated in modulating vascular smooth muscle contractility. The aim of this study was to determine whether PI3K contributes to development of diabetes-induced abnormal vascular reactivity to selected vasoactive agonists. The effect of 2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one (LY294002), a selective PI3K inhibitor, on isolated perfused mesenteric vascular bed from streptozotocin (STZ)-diabetic rats was investigated. Changes in perfusion pressure, which reflected peripheral resistance, were measured using isolated perfused mesenteric vascular beds. Our results showed that STZ treatment produced an increase in the vasoconstrictor response to norepinephrine (NE), angiotensin II (Ang II) and endothelin-1 (ET-1), and an attenuated vasodilator response to carbachol and histamine in the isolated perfused mesenteric vascular bed from STZ-diabetic animals. Chronic inhibition of PI3K with LY294002 resulted in prevention of diabetes-induced abnormal vascular reactivity to the vasoactive agonists. However, the high blood glucose levels were not normalized. Results of this study indicate that selective inhibition of PI3K can attenuate the development of diabetes-induced abnormal vascular responsiveness in the isolated perfused mesenteric vascular bed.
Collapse
Affiliation(s)
- Mariam H M Yousif
- Department of Pharmacology and Toxicology, Faculty of Medicine, Kuwait University, Kuwait.
| |
Collapse
|