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Kong Z, Lv W, Wang Y, Huang Y, Che K, Nan H, Xin Y, Wang J, Chen J, Wang Y, Chi J. Sinensetin ameliorates high glucose-induced diabetic nephropathy via enhancing autophagy in vitro and in vivo. J Biochem Mol Toxicol 2023; 37:e23445. [PMID: 37393522 DOI: 10.1002/jbt.23445] [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: 09/14/2022] [Revised: 03/01/2023] [Accepted: 06/14/2023] [Indexed: 07/03/2023]
Abstract
Diabetic nephropathy (DN) affects around 40% of people with diabetes, the final outcome of which is end-stage renal disease. The deficiency of autophagy and excessive oxidative stress have been found to participate in the pathogenesis of DN. Sinensetin (SIN) has been proven to have strong antioxidant capability. However, the effect of SIN on DN has not been studied. We examined the effect of SIN on cell viability and autophagy in the podocyte cell line, MPC5 cells, treated with high glucose (HG). For in vivo studies, DN mice models were established by intraperitoneal injected with streptozotocin (40 mg/kg) for 5 consecutive days and fed with a 60% high-fat diet, and SIN was given (10, 20, and 40 mg/kg) for 8 weeks via intraperitoneal injection. The results showed that SIN could protect MPC5 cells against HG-induced damage and significantly improve the renal function of DN mice. Moreover, SIN remarkably restored the autophagy activity of MPC5 cells which was inhibited under HG conditions. Consistent with this, SIN efficiently improved autophagy in the kidney tissue of DN mice. In brief, our findings demonstrated the protective effect of SIN on DN via restoring the autophagic function, which might provide a basis for drug development.
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Affiliation(s)
- Zili Kong
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Endocrinology and Metabolism, Qingdao Key Laboratory of Thyroid Diseases, Medical Research Center, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Wenshan Lv
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yunyang Wang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yajing Huang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Kui Che
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Endocrinology and Metabolism, Qingdao Key Laboratory of Thyroid Diseases, Medical Research Center, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Huiqi Nan
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yu Xin
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jiaxuan Wang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jintao Chen
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yangang Wang
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jingwei Chi
- Department of Endocrinology and Metabolism, Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Endocrinology and Metabolism, Qingdao Key Laboratory of Thyroid Diseases, Medical Research Center, Affiliated Hospital of Qingdao University, Qingdao, China
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2
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Sitek JD, Kuczeriszka M, Walkowska A, Kompanowska-Jezierska E, Dobrowolski L. Nonselective and A2a-Selective Inhibition of Adenosine Receptors Modulates Renal Perfusion and Excretion Depending on the Duration of Streptozotocin-Induced Diabetes in Rats. Pharmaceuticals (Basel) 2023; 16:ph16050732. [PMID: 37242515 DOI: 10.3390/ph16050732] [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: 02/15/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Long-lasting hyperglycaemia may alter the role of adenosine-dependent receptors (P1R) in the control of kidney function. We investigated how P1R activity affects renal circulation and excretion in diabetic (DM) and normoglycaemic (NG) rats; the receptors' interactions with bioavailable NO and H2O2 were also explored. The effects of adenosine deaminase (ADA, nonselective P1R inhibitor) and P1A2a-R-selective antagonist (CSC) were examined in anaesthetised rats, both after short-lasting (2-weeks, DM-14) and established (8-weeks, DM-60) streptozotocin-induced hyperglycaemia, and in normoglycaemic age-matched animals (NG-14, NG-60, respectively). The arterial blood pressure, perfusion of the whole kidney and its regions (cortex, outer-, and inner medulla), and renal excretion were determined, along with the in situ renal tissue NO and H2O2 signals (selective electrodes). The ADA treatment helped to assess the P1R-dependent difference in intrarenal baseline vascular tone (vasodilation in DM and vasoconstriction in NG rats), with the difference being more pronounced between DM-60 and NG-60 animals. The CSC treatment showed that in DM-60 rats, A2aR-dependent vasodilator tone was modified differently in individual kidney zones. Renal excretion studies after the ADA and CSC treatments showed that the balance of the opposing effects of A2aRs and other P1Rs on tubular transport, seen in the initial phase, was lost in established hyperglycaemia. Regardless of the duration of the diabetes, we observed a tonic effect of A2aR activity on NO bioavailability. Dissimilarly, the involvement of P1R in tissue production of H2O2, observed in normoglycaemia, decreased. Our functional study provides new information on the changing interaction of adenosine in the kidney, as well as its receptors and NO and H2O2, in the course of streptozotocin diabetes.
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Affiliation(s)
- Joanna Dorota Sitek
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland
| | - Marta Kuczeriszka
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland
| | - Agnieszka Walkowska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland
| | - Elżbieta Kompanowska-Jezierska
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland
| | - Leszek Dobrowolski
- Department of Renal and Body Fluid Physiology, Mossakowski Medical Research Institute, Polish Academy of Sciences, 02-106 Warsaw, Poland
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3
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Liu B, Zhang L, Yang H, Chen X, Zheng H, Liao X. SIK2 protects against renal tubular injury and the progression of diabetic kidney disease. Transl Res 2023; 253:16-30. [PMID: 36075517 DOI: 10.1016/j.trsl.2022.08.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/17/2022] [Accepted: 08/22/2022] [Indexed: 02/03/2023]
Abstract
Despite optimal medical therapy, many patients with diabetic kidney disease (DKD) progress to end-stage renal disease. The identification of new biomarkers and drug targets for DKD is required for the development of more effective therapies. The apoptosis of renal tubular epithelial cells is a key feature of the pathogenicity associated with DKD. SIK2, a salt-inducible kinase, regulates important biological processes, such as energy metabolism, cell cycle progression and cellular apoptosis. In our current study, a notable decrease in the expression of SIK2 was detected in the renal tubules of DKD patients and murine models. Functional experiments demonstrated that deficiency or inactivity of SIK2 aggravates tubular injury and interstitial fibrosis in diabetic mice. Based on transcriptome sequencing, molecular mechanism exploration revealed that SIK2 overexpression reduces endoplasmic reticulum (ER) stress-mediated tubular epithelial apoptosis by inhibiting the histone acetyltransferase activity of p300 to activate HSF1/Hsp70. Furthermore, the specific restoration of SIK2 in tubules blunts tubular and interstitial impairments in diabetic and vancomycin-induced kidney disease mice. Together, these findings indicate that SIK2 protects against renal tubular injury and the progression of kidney disease, and make a compelling case for targeting SIK2 for therapy in DKD.
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Affiliation(s)
- Bingyao Liu
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Linlin Zhang
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Hang Yang
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China
| | - Xinyu Chen
- Department of Pathology, Chongqing University Cancer Hospital, Chongqing, China
| | - Hongting Zheng
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China.
| | - Xiaoyu Liao
- Department of Endocrinology, Chongqing Education Commission Key Laboratory of Diabetic Translational Research, the Second Affiliated Hospital of Army Medical University, Chongqing, China.
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4
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Meister ML, Najjar RS, Danh JP, Knapp D, Wanders D, Feresin RG. Berry consumption mitigates the hypertensive effects of a high-fat, high-sucrose diet via attenuation of renal and aortic AT 1R expression resulting in improved endothelium-derived NO bioavailability. J Nutr Biochem 2023; 112:109225. [PMID: 36435288 DOI: 10.1016/j.jnutbio.2022.109225] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 10/12/2022] [Accepted: 11/17/2022] [Indexed: 11/25/2022]
Abstract
Dysregulation of the renin-angiotensin system (RAS) is a contributor to high-fat diet-related blood pressure (BP) increases. Deleterious effects of dysregulated RAS result in an overproduction of reactive oxygen species and a decrease in endothelial nitric oxide (NO) bioavailability due to increased NADPH oxidase (NOX) expression. Dietary polyphenols have been shown to mitigate the imbalance in the redox state and protect against endothelial dysfunction induced by a high-fat diet. Thus, we aim to determine whether polyphenol-rich blackberry and raspberry, alone and in combination, attenuate the detrimental effects of a high-fat, high-sucrose (HFHS) diet on the vascular endothelium and kidneys of mice. We show that a HFHS diet increased the expression of renal and aortic angiotensin type 1 receptor (AT1R). Further, NOX1 and NOX4 expression were increased in the kidney contributing to fibrotic damage. In human aortic endothelial cells (HAECs), palmitic acid increased the expression of NOX4, potentially driving oxidative damage in the aorta, as evidenced by increased nitrotyrosine expression. Berries reduced the expression of renal and aortic AT1R, leading to a subsequent decrease in renal NOX expression and reduced aortic oxidative stress evidenced by reduced nitrotyrosine expression. Blackberry and raspberry in combination increased the expression of NRF2 and its downstream proteins in HAECs, thereby reducing the oxidative burden to the endothelium. In combination, blackberry and raspberry also increased serum levels of NO metabolites. These findings indicate that blackberry and raspberry unique polyphenols may act synergistically to favorably modulate the abovementioned pathways and attenuate HFHS diet-induced increases in BP.
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Affiliation(s)
- Maureen L Meister
- Department of Nutrition, Georgia State University, Atlanta, Georgia, USA
| | - Rami S Najjar
- Department of Nutrition, Georgia State University, Atlanta, Georgia, USA
| | - Jessica P Danh
- Department of Nutrition, Georgia State University, Atlanta, Georgia, USA
| | - Denise Knapp
- Department of Nutrition, Georgia State University, Atlanta, Georgia, USA
| | - Desiree Wanders
- Department of Nutrition, Georgia State University, Atlanta, Georgia, USA
| | - Rafaela G Feresin
- Department of Nutrition, Georgia State University, Atlanta, Georgia, USA.
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5
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Yañez AJ, Jaramillo K, Blaña C, Burgos RA, Isla A, Silva P, Aguilar M. Sodium Tungstate (NaW) Decreases Reactive Oxygen Species (ROS) Production in Cells: New Cellular Antioxidant. Biomedicines 2023; 11:biomedicines11020417. [PMID: 36830953 PMCID: PMC9953222 DOI: 10.3390/biomedicines11020417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 02/04/2023] Open
Abstract
Diabetic nephropathy (DN) is the leading cause of end-stage renal failure worldwide. Hyperglycemia generates reactive oxygen species (ROS), contributing to diabetic complications, especially in DN. Sodium Tungstate (NaW) is an effective antidiabetic agent for short and long-term treatments of both type 1 and type 2 diabetes models. In this study, we evaluated the effect of NaW on ROS production in bovine neutrophils incubated with platelet-activating factor (PAF) and in HK-2 cells induced by high glucose or H2O2. In addition, we evaluated the effect on iNOS expression in the type 1 diabetic rat model induced with streptozotocin (STZ). NaW inhibited ROS production in PAF-induced bovine neutrophils, and human tubular cells (HK-2) were incubated in high glucose or H2O2. In addition, NaW inhibited iNOS expression in glomeruli and tubular cells in the type 1 diabetic rat. This study demonstrates a new role for NaW as an active antioxidant and its potential use in treating DN.
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Affiliation(s)
- Alejandro J. Yañez
- Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile
- Interdisciplinary Center for Aquaculture Research (INCAR), Universidad de Concepción, Concepción 4030000, Chile
- Correspondence: (A.J.Y.); (M.A.)
| | - Karen Jaramillo
- Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Camila Blaña
- Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Rafael A. Burgos
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, UACH Campus Isla Teja, Valdivia 5090000, Chile
| | - Adolfo Isla
- Interdisciplinary Center for Aquaculture Research (INCAR), Universidad de Concepción, Concepción 4030000, Chile
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad Santo Tomás, Valdivia 5090000, Chile
| | - Pamela Silva
- Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile
| | - Marcelo Aguilar
- Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile
- Correspondence: (A.J.Y.); (M.A.)
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6
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Antioxidant Phytochemicals as Potential Therapy for Diabetic Complications. Antioxidants (Basel) 2023; 12:antiox12010123. [PMID: 36670985 PMCID: PMC9855127 DOI: 10.3390/antiox12010123] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 12/10/2022] [Accepted: 12/21/2022] [Indexed: 01/06/2023] Open
Abstract
The global prevalence of diabetes continues to increase partly due to rapid urbanization and an increase in the aging population. Consequently, this is associated with a parallel increase in the prevalence of diabetic vascular complications which significantly worsen the burden of diabetes. For these diabetic vascular complications, there is still an unmet need for safe and effective alternative/adjuvant therapeutic interventions. There is also an increasing urge for therapeutic options to come from natural products such as plants. Hyperglycemia-induced oxidative stress is central to the development of diabetes and diabetic complications. Furthermore, oxidative stress-induced inflammation and insulin resistance are central to endothelial damage and the progression of diabetic complications. Human and animal studies have shown that polyphenols could reduce oxidative stress, hyperglycemia, and prevent diabetic complications including diabetic retinopathy, diabetic nephropathy, and diabetic peripheral neuropathy. Part of the therapeutic effects of polyphenols is attributed to their modulatory effect on endogenous antioxidant systems. This review attempts to summarize the established effects of polyphenols on endogenous antioxidant systems from the literature. Moreover, potential therapeutic strategies for harnessing the potential benefits of polyphenols for diabetic vascular complications are also discussed.
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7
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Zhao XP, Chang SY, Pang Y, Liao MC, Peng J, Ingelfinger JR, Chan JSD, Zhang SL. Hedgehog interacting protein activates sodium-glucose cotransporter 2 expression and promotes renal tubular epithelial cell senescence in a mouse model of type 1 diabetes. Diabetologia 2023; 66:223-240. [PMID: 36260124 DOI: 10.1007/s00125-022-05810-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 08/17/2022] [Indexed: 12/13/2022]
Abstract
AIMS/HYPOTHESIS Senescent renal tubular cells may be linked to diabetic kidney disease (DKD)-related tubulopathy. We studied mice with or without diabetes in which hedgehog interacting protein (HHIP) was present or specifically knocked out in renal tubules (HhipRT-KO), hypothesising that local deficiency of HHIP in the renal tubules would attenuate tubular cell senescence, thereby preventing DKD tubulopathy. METHODS Low-dose streptozotocin was employed to induce diabetes in both HhipRT-KO and control (Hhipfl/fl) mice. Transgenic mice overexpressing Hhip in renal proximal tubular cells (RPTC) (HhipRPTC-Tg) were used for validation, and primary RPTCs and human RPTCs (HK2) were used for in vitro studies. Kidney morphology/function, tubular senescence and the relevant molecular measurements were assessed. RESULTS Compared with Hhipfl/fl mice with diabetes, HhipRT-KO mice with diabetes displayed lower blood glucose levels, normalised GFR, ameliorated urinary albumin/creatinine ratio and less severe DKD, including tubulopathy. Sodium-glucose cotransporter 2 (SGLT2) expression was attenuated in RPTCs of HhipRT-KO mice with diabetes compared with Hhipfl/fl mice with diabetes. In parallel, an increased tubular senescence-associated secretory phenotype involving release of inflammatory cytokines (IL-1β, IL-6 and monocyte chemoattractant protein-1) and activation of senescence markers (p16, p21, p53) in Hhipfl/fl mice with diabetes was attenuated in HhipRT-KO mice with diabetes. In contrast, HhipRPTC-Tg mice had increased tubular senescence, which was inhibited by canagliflozin in primary RPTCs. In HK2 cells, HHIP overexpression or recombinant HHIP increased SGLT2 protein expression and promoted cellular senescence by targeting both ataxia-telangiectasia mutated and ataxia-telangiectasia and Rad3-related-mediated cell arrest. CONCLUSIONS/INTERPRETATION Tubular HHIP deficiency prevented DKD-related tubulopathy, possibly via the inhibition of SGLT2 expression and cellular senescence.
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Affiliation(s)
- Xin-Ping Zhao
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Shiao-Ying Chang
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Yuchao Pang
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Min-Chun Liao
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Junzheng Peng
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Julie R Ingelfinger
- Harvard Medical School, Pediatric Nephrology Unit, Massachusetts General Hospital, Boston, MA, USA
| | - John S D Chan
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Department of Medicine, Université de Montréal, Montréal, QC, Canada
| | - Shao-Ling Zhang
- Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), Department of Medicine, Université de Montréal, Montréal, QC, Canada.
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8
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Yen CC, Lii CK, Chen CC, Li CC, Tseng MH, Lo CW, Liu KL, Yang YC, Chen HW. Andrographolide Inhibits Lipotoxicity-Induced Activation of the NLRP3 Inflammasome in Bone Marrow-Derived Macrophages. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2022; 51:129-147. [PMID: 36419253 DOI: 10.1142/s0192415x23500088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Andrographolide is the major bioactive component of the herb Andrographis paniculata and is a potent anti-inflammatory agent. Obesity leads to an excess of free fatty acids, particularly palmitic acid (PA), in the circulation. Obesity also causes the deposition of ectopic fat in nonadipose tissues, which leads to lipotoxicity, a condition closely associated with inflammation. Here, we investigated whether andrographolide could inhibit PA-induced inflammation by activating autophagy, activating the antioxidant defense system, and blocking the activation of the NLRP3 inflammasome. Bone marrow-derived macrophages (BMDMs) were primed with lipopolysaccharide (LPS) and then activated with PA. LPS/PA treatment increased both the mRNA expression of NLRP3 and IL-1[Formula: see text] and the release of IL-1[Formula: see text] in BMDMs. Andrographolide inhibited the LPS/PA-induced protein expression of caspase-1 and the release of IL-1[Formula: see text]. Furthermore, andrographolide attenuated LPS/PA-induced mtROS generation by first promoting autophagic flux and catalase activity, and ultimately inhibiting activation of the NLRP3 inflammasome. Our results suggest that the mechanisms by which andrographolide downregulates LPS/PA-induced IL-1[Formula: see text] release in BMDMs involve promoting autophagic flux and catalase activity. Andrographolide may thus be a candidate to prevent obesity- and lipotoxicity-driven chronic inflammatory disease.
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Affiliation(s)
- Chih-Ching Yen
- Department of Respiratory Therapy, China Medical University, Taichung, Taiwan.,Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chong-Kuei Lii
- Department of Nutrition, China Medical University, Taichung, Taiwan.,Department of Food Nutrition and Health Biotechnology, Asia University, Taichung, Taiwan
| | - Chih-Chieh Chen
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - Chien-Chun Li
- Department of Nutrition, Chung Shan Medical University, Taichung, Taiwan.,Department of Nutrition, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Meng-Hsien Tseng
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - Chia-Wen Lo
- Department of Nutrition, China Medical University, Taichung, Taiwan
| | - Kai-Li Liu
- Department of Nutrition, Chung Shan Medical University, Taichung, Taiwan.,Department of Nutrition, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Ya-Chen Yang
- Department of Food Nutrition and Health Biotechnology, Asia University, Taichung, Taiwan
| | - Haw-Wen Chen
- Department of Nutrition, China Medical University, Taichung, Taiwan
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9
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Overstreet JM, Gifford CC, Tang J, Higgins PJ, Samarakoon R. Emerging role of tumor suppressor p53 in acute and chronic kidney diseases. Cell Mol Life Sci 2022; 79:474. [PMID: 35941392 PMCID: PMC11072039 DOI: 10.1007/s00018-022-04505-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 02/06/2023]
Abstract
p53 is a major regulator of cell cycle arrest, apoptosis, and senescence. While involvement of p53 in tumorigenesis is well established, recent studies implicate p53 in the initiation and progression of several renal diseases, which is the focus of this review. Ischemic-, aristolochic acid (AA) -, diabetic-, HIV-associated-, obstructive- and podocyte-induced nephropathies are accompanied by activation and/or elevated expression of p53. Studies utilizing chemical or renal-specific inhibition of p53 in mice confirm the pathogenic role of this transcription factor in acute kidney injury and chronic kidney disease. TGF-β1, NOX, ATM/ATR kinases, Cyclin G, HIPK, MDM2 and certain micro-RNAs are important determinants of renal p53 function in response to trauma. AA, cisplatin or TGF-β1-mediated ROS generation via NOXs promotes p53 phosphorylation and subsequent tubular dysfunction. p53-SMAD3 transcriptional cooperation downstream of TGF-β1 orchestrates induction of fibrotic factors, extracellular matrix accumulation and pathogenic renal cell communication. TGF-β1-induced micro-RNAs (such as mir-192) could facilitate p53 activation, leading to renal hypertrophy and matrix expansion in response to diabetic insults while AA-mediated mir-192 induction regulates p53 dependent epithelial G2/M arrest. The widespread involvement of p53 in tubular maladaptive repair, interstitial fibrosis, and podocyte injury indicate that p53 clinical targeting may hold promise as a novel therapeutic strategy for halting progression of certain acute and chronic renal diseases, which affect hundreds of million people worldwide.
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Affiliation(s)
| | - Cody C Gifford
- Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, NY, 12208, USA
| | - Jiaqi Tang
- Division of Nephrology and Hypertension, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Paul J Higgins
- Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, NY, 12208, USA.
- Center for Cell Biology and Cancer Research, Albany Medical College, 47 New Scotland Avenue, Albany, NY, 12208, USA.
| | - Rohan Samarakoon
- Department of Regenerative and Cancer Cell Biology, Albany Medical College, Albany, NY, 12208, USA.
- Center for Cell Biology and Cancer Research, Albany Medical College, 47 New Scotland Avenue, Albany, NY, 12208, USA.
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10
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Thomas C, Wurzer L, Malle E, Ristow M, Madreiter-Sokolowski CT. Modulation of Reactive Oxygen Species Homeostasis as a Pleiotropic Effect of Commonly Used Drugs. FRONTIERS IN AGING 2022; 3:905261. [PMID: 35821802 PMCID: PMC9261327 DOI: 10.3389/fragi.2022.905261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 05/18/2022] [Indexed: 01/17/2023]
Abstract
Age-associated diseases represent a growing burden for global health systems in our aging society. Consequently, we urgently need innovative strategies to counteract these pathological disturbances. Overwhelming generation of reactive oxygen species (ROS) is associated with age-related damage, leading to cellular dysfunction and, ultimately, diseases. However, low-dose ROS act as crucial signaling molecules and inducers of a vaccination-like response to boost antioxidant defense mechanisms, known as mitohormesis. Consequently, modulation of ROS homeostasis by nutrition, exercise, or pharmacological interventions is critical in aging. Numerous nutrients and approved drugs exhibit pleiotropic effects on ROS homeostasis. In the current review, we provide an overview of drugs affecting ROS generation and ROS detoxification and evaluate the potential of these effects to counteract the development and progression of age-related diseases. In case of inflammation-related dysfunctions, cardiovascular- and neurodegenerative diseases, it might be essential to strengthen antioxidant defense mechanisms in advance by low ROS level rises to boost the individual ROS defense mechanisms. In contrast, induction of overwhelming ROS production might be helpful to fight pathogens and kill cancer cells. While we outline the potential of ROS manipulation to counteract age-related dysfunction and diseases, we also raise the question about the proper intervention time and dosage.
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Affiliation(s)
- Carolin Thomas
- Laboratory of Energy Metabolism Institute of Translational Medicine Department of Health Sciences and Technology ETH Zurich, Schwerzenbach, Switzerland
| | - Lia Wurzer
- Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
| | - Ernst Malle
- Molecular Biology and Biochemistry, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
| | - Michael Ristow
- Laboratory of Energy Metabolism Institute of Translational Medicine Department of Health Sciences and Technology ETH Zurich, Schwerzenbach, Switzerland
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11
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Aranda-Rivera AK, Cruz-Gregorio A, Pedraza-Chaverri J, Scholze A. Nrf2 Activation in Chronic Kidney Disease: Promises and Pitfalls. Antioxidants (Basel) 2022; 11:antiox11061112. [PMID: 35740009 PMCID: PMC9220138 DOI: 10.3390/antiox11061112] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/01/2022] [Accepted: 06/01/2022] [Indexed: 11/16/2022] Open
Abstract
The nuclear factor erythroid 2-related factor 2 (Nrf2) protects the cell against oxidative damage. The Nrf2 system comprises a complex network that functions to ensure adequate responses to redox perturbations, but also metabolic demands and cellular stresses. It must be kept within a physiologic activity range. Oxidative stress and alterations in Nrf2-system activity are central for chronic-kidney-disease (CKD) progression and CKD-related morbidity. Activation of the Nrf2 system in CKD is in multiple ways related to inflammation, kidney fibrosis, and mitochondrial and metabolic effects. In human CKD, both endogenous Nrf2 activation and repression exist. The state of the Nrf2 system varies with the cause of kidney disease, comorbidities, stage of CKD, and severity of uremic toxin accumulation and inflammation. An earlier CKD stage, rapid progression of kidney disease, and inflammatory processes are associated with more robust Nrf2-system activation. Advanced CKD is associated with stronger Nrf2-system repression. Nrf2 activation is related to oxidative stress and moderate uremic toxin and nuclear factor kappa B (NF-κB) elevations. Nrf2 repression relates to high uremic toxin and NF-κB concentrations, and may be related to Kelch-like ECH-associated protein 1 (Keap1)-independent Nrf2 degradation. Furthermore, we review the effects of pharmacological Nrf2 activation by bardoxolone methyl, curcumin, and resveratrol in human CKD and outline strategies for how to adapt future Nrf2-targeted therapies to the requirements of patients with CKD.
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Affiliation(s)
- Ana Karina Aranda-Rivera
- Laboratory F-315, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City 04510, Mexico; (A.K.A.-R.); (A.C.-G.); (J.P.-C.)
| | - Alfredo Cruz-Gregorio
- Laboratory F-315, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City 04510, Mexico; (A.K.A.-R.); (A.C.-G.); (J.P.-C.)
| | - José Pedraza-Chaverri
- Laboratory F-315, Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico, Mexico City 04510, Mexico; (A.K.A.-R.); (A.C.-G.); (J.P.-C.)
| | - Alexandra Scholze
- Department of Nephrology, Odense University Hospital, 5000 Odense C, Denmark
- Institute of Clinical Research, University of Southern Denmark, 5000 Odense C, Denmark
- Correspondence:
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Impact of klotho on the expression of SRGAP2a in podocytes in diabetic nephropathy. BMC Nephrol 2022; 23:151. [PMID: 35436879 PMCID: PMC9014571 DOI: 10.1186/s12882-022-02765-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Accepted: 03/30/2022] [Indexed: 11/14/2022] Open
Abstract
Background Diabetic nephropathy (DN) is the major cause of kidney failure, and glomerular podocytes play critical roles in the pathogenesis of DN by maintaining the glomerular structure and filtration barrier. Klotho and Slit-Robo GTP activating protein 2a (SRGAP2a) have been indicated to play protective roles in reducing kidney injury, but whether there is an internal relationship between these two factors is unclear. Methods In this study, we cultured differentiated rat podocytes in vitro and measured the SRGAP2a expressions by immunofluorescence staining, quantitative real-time PCR (qRT-PCR) and western blotting, after siRNA-mediated transforming growth factor β1 (TGF-β1) silencing, TGF-β1 overexpression and in the presence of a reactive oxygen species (ROS) inhibitor. And we detected the expressions of SRGAP2a, small mother against decapentaplegic (Smad)2/3, phosphorylated-Smad2/3 (p-Smad2/3), Smad7, and NAD(P)H oxidase 4 (NOX4), ROS levels and podocyte cytoskeletal remodelling under high glucose (HG) and exogenous klotho conditions. In addition, we performed haematoxylin–eosin (HE) staining and immunohistochemistry with diabetic rat models to confirm the in vitro results. Results The results indicated that SRGAP2a expression was significantly upregulated under siRNA-mediated TGF-β1 silencing conditions or after adding a ROS inhibitor, but significantly downregulated with TGF-β1 overexpression, in the presence of HG. The supplementation of exogenous klotho under HG conditions significantly increased the SRGAP2a expression, remodelled the actin cytoskeleton and altered the expressions of Smad2/3, p-Smad2/3, Smad7 and NOX4 and reduced the ROS generation in podocytes. Moreover, klotho administration protected kidney injury in DN rats. Conclusions This study indicated that klotho may modulate the expression of SRGAP2a by regulating the ROS and TGF-β1 signalling pathways and provided theoretical support for klotho protein as a novel therapeutic strategy for treating DN patients. Supplementary Information The online version contains supplementary material available at 10.1186/s12882-022-02765-z.
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Yang M, Li C, Yang S, Xiao Y, Chen W, Gao P, Jiang N, Xiong S, Wei L, Zhang Q, Yang J, Zeng L, Sun L. Mitophagy: A Novel Therapeutic Target for Treating DN. Curr Med Chem 2021; 28:2717-2728. [PMID: 33023427 DOI: 10.2174/0929867327666201006152656] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 08/25/2020] [Accepted: 09/09/2020] [Indexed: 11/22/2022]
Abstract
Diabetic nephropathy (DN) is a common microvascular complication of diabetes and one of the leading causes of end-stage renal disease. Tubular damage is an early change and characteristic of DN, and mitochondrial dysfunction plays an important role in the development of DN. Therefore, the timely removal of damaged mitochondria in tubular cells is an effective treatment strategy for DN. Mitophagy is a type of selective autophagy that ensures the timely elimination of damaged mitochondria to protect cells from oxidative stress. In this review, we summarize our understanding of mitochondrial dysfunction and dynamic disorders in tubular cells in DN and the molecular mechanism of mitophagy. Finally, the role of mitophagy in DN and its feasibility as a therapeutic target for DN are discussed.
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Affiliation(s)
- Ming Yang
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Chenrui Li
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Shikun Yang
- Department of Nephrology, the third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ying Xiao
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Wei Chen
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Peng Gao
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Na Jiang
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Shan Xiong
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Ling Wei
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Qin Zhang
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Jinfei Yang
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Lingfeng Zeng
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
| | - Lin Sun
- Department of Nephrology, The Second Xiangya Hospital Central South University, Hunan Key Laboratory of Kidney Disease and Blood Purification, No. 139 Renmin Middle Road, Changsha, Hunan, China
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Zhao S, Lo CS, Miyata KN, Ghosh A, Zhao XP, Chenier I, Cailhier JF, Ethier J, Lattouf JB, Filep JG, Ingelfinger JR, Zhang SL, Chan JSD. Overexpression of Nrf2 in Renal Proximal Tubular Cells Stimulates Sodium-Glucose Cotransporter 2 Expression and Exacerbates Dysglycemia and Kidney Injury in Diabetic Mice. Diabetes 2021; 70:1388-1403. [PMID: 33820760 DOI: 10.2337/db20-1126] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 03/27/2021] [Indexed: 11/13/2022]
Abstract
We investigated the impact of nuclear factor erythroid 2-related factor 2 (Nrf2) overexpression in renal proximal tubular cells (RPTCs) on blood glucose, kidney injury, and sodium-glucose cotransporter 2 (Sglt2) expression in diabetic Akita Nrf2 -/-/Nrf2RPTC transgenic (Tg) mice. Immortalized human RPTCs (HK2) stably transfected with plasmid containing the SGLT2 promoter and human kidneys from patients with diabetes were also studied. Nrf2 overexpression was associated with increased blood glucose, glomerular filtration rate, urinary albumin-to-creatinine ratio, tubulointerstitial fibrosis, and Sglt2 expression in Akita Nrf2 -/-/Nrf2RPTC Tg mice compared with their Akita Nrf2 -/- littermates. In vitro, oltipraz or transfection of NRF2 cDNA stimulated SGLT2 expression and SGLT2 promoter activity in HK2, and these effects were inhibited by trigonelline or NRF2 siRNA. The deletion of the NRF2-responsive element (NRF2-RE) in the SGLT2 promoter abolished the stimulatory effect of oltipraz on SGLT2 promoter activity. NRF2 binding to the NRF2-RE of the SGLT2 promoter was confirmed by gel mobility shift assay and chromatin immunoprecipitation assays. Kidneys from patients with diabetes exhibited higher levels of NRF2 and SGLT2 in the RPTCs than kidneys from patients without diabetes. These results suggest a link by which NRF2 mediates hyperglycemia stimulation of SGLT2 expression and exacerbates blood glucose and kidney injury in diabetes.
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Affiliation(s)
- Shuiling Zhao
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Chao-Sheng Lo
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Kana N Miyata
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Anindya Ghosh
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Xin-Ping Zhao
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Isabelle Chenier
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Jean-Francois Cailhier
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Jean Ethier
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Jean-Baptiste Lattouf
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - Janos G Filep
- Centre de Recherche, Hôpital Maisonneuve-Rosemont, and Department of Pathology and Cell Biology, Université de Montréal, Montreal, Quebec, Canada
| | - Julie R Ingelfinger
- Pediatric Nephrology Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Shao-Ling Zhang
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
| | - John S D Chan
- Centre de Recherche, Centre Hospitalier de l'Université de Montréal, and Département de Médecine, Université de Montréal, Montreal, Quebec, Canada
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15
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Angiotensin II up-regulates sodium-glucose co-transporter 2 expression and SGLT2 inhibitor attenuates Ang II-induced hypertensive renal injury in mice. Clin Sci (Lond) 2021; 135:943-961. [PMID: 33822013 DOI: 10.1042/cs20210094] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/01/2021] [Accepted: 04/06/2021] [Indexed: 02/07/2023]
Abstract
Clinical trials indicate that sodium/glucose co-transporter 2 (SGLT2) inhibitors (SGLT2i) improve kidney function, yet, the molecular regulation of SGLT2 expression is incompletely understood. Here, we investigated the role of the intrarenal renin-angiotensin system (RAS) on SGLT2 expression. In adult non-diabetic participants in the Nephrotic Syndrome Study Network (NEPTUNE, n=163), multivariable linear regression analysis showed SGLT2 mRNA was significantly associated with angiotensinogen (AGT), renin, and angiotensin-converting enzyme (ACE) mRNA levels (P<0.001). In vitro, angiotensin II (Ang II) dose-dependently stimulated SGLT2 expression in HK-2, human immortalized renal proximal tubular cells (RPTCs); losartan and antioxidants inhibited it. Sglt2 expression was increased in transgenic (Tg) mice specifically overexpressing Agt in their RPTCs, as well as in WT mice with a single subcutaneous injection of Ang II (1.44 mg/kg). Moreover, Ang II (1000 ng/kg/min) infusion via osmotic mini-pump in WT mice for 4 weeks increased systolic blood pressure (SBP), glomerulosclerosis, tubulointerstitial fibrosis, and albuminuria; canaglifozin (Cana, 15 mg/kg/day) reversed these changes, with the exception of SBP. Fractional glucose excretion (FeGlu) was higher in Ang II+Cana than WT+Cana, whereas Sglt2 expression was similar. Our data demonstrate a link between intrarenal RAS and SGLT2 expression and that SGLT2i ameliorates Ang II-induced renal injury independent of SBP.
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Roles of mTOR in Diabetic Kidney Disease. Antioxidants (Basel) 2021; 10:antiox10020321. [PMID: 33671526 PMCID: PMC7926630 DOI: 10.3390/antiox10020321] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/13/2021] [Accepted: 02/18/2021] [Indexed: 02/06/2023] Open
Abstract
Diabetic kidney disease (DKD) is the leading cause of end-stage renal disease and the number of patients affected is increasing worldwide. Thus, there is a need to establish a new treatment for DKD to improve the renal prognosis of diabetic patients. Recently, it has shown that intracellular metabolic abnormalities are involved in the pathogenesis of DKD. In particular, the activity of mechanistic target of rapamycin complex 1 (mTORC1), a nutrient-sensing signaling molecule, is hyperactivated in various organs of diabetic patients, which suggests the involvement of excessive mTORC1 activation in the pathogenesis of diabetes. In DKD, hyperactivated mTORC1 may be involved in the pathogenesis of podocyte damage, which causes proteinuria, and tubular cell injury that decreases renal function. Therefore, elucidating the role of mTORC1 in DKD and developing new therapeutic agents that suppress mTORC1 hyperactivity may shed new light on DKD treatments in the future.
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Hong YA, Park CW. Catalytic Antioxidants in the Kidney. Antioxidants (Basel) 2021; 10:antiox10010130. [PMID: 33477607 PMCID: PMC7831323 DOI: 10.3390/antiox10010130] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/09/2021] [Accepted: 01/12/2021] [Indexed: 02/08/2023] Open
Abstract
Reactive oxygen species and reactive nitrogen species are highly implicated in kidney injuries that include acute kidney injury, chronic kidney disease, hypertensive nephropathy, and diabetic nephropathy. Therefore, antioxidant agents are promising therapeutic strategies for kidney diseases. Catalytic antioxidants are defined as small molecular mimics of antioxidant enzymes, such as superoxide dismutase, catalase, and glutathione peroxidase, and some of them function as potent detoxifiers of lipid peroxides and peroxynitrite. Several catalytic antioxidants have been demonstrated to be effective in a variety of in vitro and in vivo disease models that are associated with oxidative stress, including kidney diseases. This review summarizes the evidence for the role of antioxidant enzymes in kidney diseases, the classifications of catalytic antioxidants, and their current applications to kidney diseases.
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Affiliation(s)
- Yu Ah Hong
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
| | - Cheol Whee Park
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
- Institute for Aging and Metabolic Diseases, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Correspondence: ; Tel.: +82-2-2258-6038
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Therapeutic effect of curcumin and C60 fullerene against hyperglycemia-mediated tissue damage in diabetic rat lungs. J Bioenerg Biomembr 2021; 53:25-38. [PMID: 33411205 DOI: 10.1007/s10863-020-09861-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 11/16/2020] [Indexed: 01/02/2023]
Abstract
Increasing evidence suggests that diabetes also targets lung tissues resulting in structural and physiological abnormalities. The present study evaluated the impact of pristine C60 fullerene (C60) against diabetes-induced lung damage for the first time. The objective was to evaluate the impacts of Curcumin (Cur), C60 and C60 fullerene+Curcumin (C60 + Cur) combination on oxidative stress (MDA, GSH, CAT, GST, Retinol, α-tocopherol), apoptosis (Caspase-3, Bcl-2), cholesterol and fatty acid profile (16:0,18:0,18:1,18:2, 22:4, 22:6) against changes in the lung tissue of diabetic rats. Streptozotocin (STZ) was used for inducing diabetes with Cur, C60 and C60 + Cur combination administered for eight weeks to treat diabetic and control rats. Increased oxidative stress, apoptosis and significant changes in cell structure were observed in the lung tissues of diabetic rats. The combination of Cur, C60 and C60 + Cur reduced oxidative stress in the lung tissue of diabetic rats while increasing the antioxidant defense capacity of the tissue, exhibiting tissue protective properties against apoptosis. The diabetic rats displayed favorable properties against lipotoxicity-induced tissue damage due to the increase in the fatty acid and cholesterol levels in lung tissue. It was observed that Cur, C60 and C60 + Cur combination displays protective effects against hyperglycemia induced oxidative damage to lung tissue. Oxidative stress, prevention of lipid and cholesterol accumulation, and weakening of lung apoptosis may be associated with these effects.
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Yaribeygi H, Sathyapalan T, Jamialahmadi T, Sahebkar A. The Impact of Diabetes Mellitus in COVID-19: A Mechanistic Review of Molecular Interactions. J Diabetes Res 2020; 2020:5436832. [PMID: 33294461 PMCID: PMC7691013 DOI: 10.1155/2020/5436832] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 10/13/2020] [Accepted: 11/02/2020] [Indexed: 02/07/2023] Open
Abstract
The ongoing pandemic of COVID-19 is now the major issue in global health. Evidence implies that patients with diabetes are at a higher risk of severe disease or death due to COVID-19 than individuals without diabetes. However, the underlying mechanism for this differential effect in individuals with and without diabetes is not clearly understood. We have reviewed the pathophysiological pathways which may facilitate the entry of virus or an increase in its infectivity in host cells in the diabetic milieu. We suggest that the preexisting pathological pathways in patients with poorly controlled diabetes increase the risk of infectivity and are responsible for the higher levels of tissue injury and death in patients with diabetes.
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Affiliation(s)
- Habib Yaribeygi
- Research Center of Physiology, Semnan University of Medical Sciences, Semnan, Iran
| | - Thozhukat Sathyapalan
- Academic Diabetes, Endocrinology and Metabolism, Hull York Medical School, University of Hull, UK
| | - Tannaz Jamialahmadi
- Department of Food Science and Technology, Quchan Branch, Islamic Azad University, Quchan, Iran
- Department of Nutrition, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad 9177948564, Iran
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Li P, Gupta S, Mothi SS, Rennke HG, Leaf DE, Waikar SS, McMahon GM. Histopathologic Correlates of Kidney Function: Insights From Nephrectomy Specimens. Am J Kidney Dis 2020; 77:336-345. [PMID: 33098926 DOI: 10.1053/j.ajkd.2020.08.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 08/17/2020] [Indexed: 11/11/2022]
Abstract
RATIONALE & OBJECTIVE Existing data sets correlating kidney histopathologic findings with kidney function have low proportions of elderly patients (and those with a family history of kidney failure are over-represented), which limits their generalizability. Our objective was to use non-neoplastic tissue from nephrectomy specimens to examine the association between degree of histopathologic changes and estimated glomerular filtration rate (eGFR) and determine whether the association differed by age. STUDY DESIGN Cross-sectional study. EXPOSURES Glomerulosclerosis (GS), interstitial fibrosis/tubular atrophy (IFTA), and arterial sclerosis/arteriosclerosis (AS). OUTCOME eGFR. ANALYTICAL APPROACH We retrospectively reviewed kidney pathology reports (of non-neoplastic tissue) from 1,347 patients who underwent nephrectomy (1999-2018) for any indication but most commonly due to kidney cancer. We evaluated the association between degree of GS, IFTA, and AS with eGFR at the time of nephrectomy and whether this was modified by age. RESULTS Among the participants (aged 17-91 years), 42% and 57.8% had>10% GS and IFTA, respectively, and 81.8% had moderate or severe AS. We found that greater degrees of GS, IFTA, and AS were associated with lower eGFR after multivariable adjustment. Although there was a greater prevalence of more severe degrees of GS and IFTA in older individuals, the association between various histopathologic features and eGFR was not modified by age. LIMITATIONS Retrospective cross-sectional study. CONCLUSIONS Our study demonstrates differences in the histologic appearance of the kidneys across levels of eGFR. Although the prevalence of advanced changes was higher in the oldest group of patients, a subset had excellent kidney function and limited histologic changes.
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Affiliation(s)
- Ping Li
- Division of Renal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA; Department of Nephrology, State Key Laboratory of Kidney Disease, National Clinical Research Center for Kidney Disease, Chinese PLA General Hospital, Beijing, China
| | - Shruti Gupta
- Division of Renal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Suraj S Mothi
- Division of Renal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Helmut G Rennke
- Division of Renal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA; Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - David E Leaf
- Division of Renal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Sushrut S Waikar
- Division of Renal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA; Renal Section, Department of Medicine, Boston University School of Medicine and Boston Medical Center, Boston, MA
| | - Gearoid M McMahon
- Division of Renal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA.
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Jiang N, Zhao H, Han Y, Li L, Xiong S, Zeng L, Xiao Y, Wei L, Xiong X, Gao P, Yang M, Liu Y, Sun L. HIF-1α ameliorates tubular injury in diabetic nephropathy via HO-1-mediated control of mitochondrial dynamics. Cell Prolif 2020; 53:e12909. [PMID: 32975326 PMCID: PMC7653251 DOI: 10.1111/cpr.12909] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 08/19/2020] [Accepted: 09/02/2020] [Indexed: 12/21/2022] Open
Abstract
Objectives In diabetic nephropathy (DN), hypoxia‐inducible factor‐1α (HIF‐1α) activation in tubular cells plays an important protective role against kidney injury. The effects may occur via the target genes of HIF‐1α, such as haem oxygenase‐1 (HO‐1), but the exact mechanisms are incompletely understood. Materials and methods Mice with proximal tubule‐specific knockout of HIF‐1α (PT‐HIF‐1α−/− mice) were generated, and diabetes was induced in these mice by streptozotocin (STZ) injection. In addition, to mimic a hypoxic state, cobaltous chloride (CoCl2) was applied to HK‐2 cells. Results Our study first verified that conditional knockout of HIF‐1α worsened tubular injury in DN; additionally, aggravated kidney dysfunction, renal histopathological alterations, mitochondrial fragmentation, ROS accumulation and apoptosis were observed in diabetic PT‐HIF‐1α−/− mice. In vitro study showed that compared to control group, HK‐2 cells cultured under hypoxic ambiance displayed increased mitochondrial fragmentation, ROS production, mitochondrial membrane potential loss and apoptosis. These increases were reversed by overexpression of HIF‐1α or treatment with a HO‐1 agonist. Importantly, cotreatment with a HIF‐1α inhibitor and a HO‐1 agonist rescued the HK‐2 cells from the negative impacts of the HIF‐1α inhibitor. Conclusions These data revealed that HIF‐1α exerted a protective effect against tubular injury in DN, which could be mediated via modulation of mitochondrial dynamics through HO‐1 upregulation.
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Affiliation(s)
- Na Jiang
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Hao Zhao
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Yachun Han
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Li Li
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Shan Xiong
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Lingfeng Zeng
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Ying Xiao
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Ling Wei
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Xiaofen Xiong
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Peng Gao
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Ming Yang
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Yu Liu
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
| | - Lin Sun
- Department of Nephrology, The Second Xiangya Hospital of Central South University, Changsha, China.,Hunan Key Laboratory of Kidney Disease and Blood Purification, Changsha, China
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22
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Shen B, Wei K, Ding Y, Zhang J. Molecular cloning, mRNA expression and functional characterization of a catalase from Chinese black sleeper (Bostrychus sinensis). FISH & SHELLFISH IMMUNOLOGY 2020; 103:310-320. [PMID: 32428652 DOI: 10.1016/j.fsi.2020.04.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 04/20/2020] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
In this study, the catalase gene of Chinese black sleeper Bostrychus sinensis (termed as BsCat) was sequenced and characterized. The BsCat, which encodes 525 amino acids, contains a catalase proximal active site signature domain (64FDRERIPERVVHAKGAG80) and a catalase proximal heme-ligand signature domain (354RLFAYPDTH362). The BsCat exhibits high sequence similarity with Cat of other species. Phylogenetic tree reconstruction revealed a close evolutionary relationship of BsCat to catalase genes of other fishes. The results of Real-time PCR showed that the BsCat gene was constitutively expressed in most organs of B. sinensis, with predominant expression detected in liver, followed by peripheral blood and spleen. Moreover, the BsCat gene was significantly changed after either poly (I:C) stimulation or Vibrio parahemolyticus infection in peripheral blood, head kidney, liver and spleen. The enzymatic activity of purified recombinant BsCat (rBsCat) was 2261 ± 96 U/mg. The rBsCat exhibits optimum enzymatic activity at 15 °C and pH 7.0. Our results suggested that the BsCat is involved in the antioxidant defense and host immune response of Chinese black sleeper during pathogen invasion.
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Affiliation(s)
- Bin Shen
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Ke Wei
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Yuehan Ding
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Jianshe Zhang
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316004, China.
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23
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Rawat D, Shrivastava S, Naik RA, Chhonker SK, Koiri RK. SIRT1-mediated amelioration of oxidative stress in kidney of alcohol-aflatoxin-B1-induced hepatocellular carcinoma by resveratrol is catalase dependent and GPx independent. J Biochem Mol Toxicol 2020; 34:e22576. [PMID: 32640115 DOI: 10.1002/jbt.22576] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 05/10/2020] [Accepted: 06/23/2020] [Indexed: 01/18/2023]
Abstract
Hepatocellular carcinoma (HCC) is a type of primary liver cancer and dietary exposure to aflatoxins is a major risk factor of HCC. The current study aimed to assess the role of resveratrol and nicotinamide in renal toxicity during alcohol-aflatoxin-B1-induced HCC. The results revealed that resveratrol treatment normalized the level of urea, lipid peroxidation, lactate and lactate dehydrogenase, which were increased in HCC. It also downregulated the increased expression of sirtuin 1 in HCC kidney. Furthermore, amelioration of oxidative stress in kidney of HCC rats by resveratrol was observed to be catalase dependent and glutathione peroxidase independent.
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Affiliation(s)
- Divya Rawat
- Biochemistry Laboratory, Department of Zoology, Dr Harisingh Gour Vishwavidyalaya, Sagar, India
| | - Somi Shrivastava
- Biochemistry Laboratory, Department of Zoology, Dr Harisingh Gour Vishwavidyalaya, Sagar, India
| | - Rayees Ahmad Naik
- Biochemistry Laboratory, Department of Zoology, Dr Harisingh Gour Vishwavidyalaya, Sagar, India
| | - Saurabh Kumar Chhonker
- Biochemistry Laboratory, Department of Zoology, Dr Harisingh Gour Vishwavidyalaya, Sagar, India
| | - Raj Kumar Koiri
- Biochemistry Laboratory, Department of Zoology, Dr Harisingh Gour Vishwavidyalaya, Sagar, India
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24
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Satou R, Cypress MW, Woods TC, Katsurada A, Dugas CM, Fonseca VA, Navar LG. Blockade of sodium-glucose cotransporter 2 suppresses high glucose-induced angiotensinogen augmentation in renal proximal tubular cells. Am J Physiol Renal Physiol 2019; 318:F67-F75. [PMID: 31682172 DOI: 10.1152/ajprenal.00402.2019] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Renal proximal tubular angiotensinogen (AGT) is increased by hyperglycemia (HG) in diabetes mellitus, which augments intrarenal angiotensin II formation, contributing to the development of hypertension and kidney injury. Sodium-glucose cotransporter 2 (SGLT2) is abundantly expressed in proximal tubular cells (PTCs). The present study investigated the effects of canagliflozin (CANA), a SGLT2 inhibitor, on HG-induced AGT elevation in cultured PTCs. Mouse PTCs were treated with 5-25 mM glucose. CANA (0-10 µM) was applied 1 h before glucose treatment. Glucose (10 mM) increased AGT mRNA and protein levels at 12 h (3.06 ± 0.48-fold in protein), and 1 and 10 µM CANA as well as SGLT2 shRNA attenuated the AGT augmentation. CANA did not suppress the elevated AGT levels induced by 25 mM glucose. Increased AGT expression induced by treatment with pyruvate, a glucose metabolite that does not require SGLT2 for uptake, was not attenuated by CANA. In HG-treated PTCs, intracellular reactive oxygen species levels were elevated compared with baseline (4.24 ± 0.23-fold), and these were also inhibited by CANA. Furthermore, tempol, an antioxidant, attenuated AGT upregulation in HG-treated PTCs. HG-induced AGT upregulation was not inhibited by an angiotensin II receptor antagonist, indicating that HG stimulates AGT expression in an angiotensin II-independent manner. These results indicate that enhanced glucose entry via SGLT2 into PTCs elevates intracellular reactive oxygen species generation by stimulation of glycolysis and consequent AGT augmentation. SGLT2 blockade limits HG-induced AGT stimulation, thus reducing the development of kidney injury in diabetes mellitus.
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Affiliation(s)
- Ryousuke Satou
- Department of Physiology and Department of Medicine and Hypertension and Renal Center of Excellence, Tulane University School of Medicine, New Orleans, Louisiana
| | - Michael W Cypress
- Department of Physiology and Department of Medicine and Hypertension and Renal Center of Excellence, Tulane University School of Medicine, New Orleans, Louisiana
| | - T Cooper Woods
- Department of Physiology and Department of Medicine and Hypertension and Renal Center of Excellence, Tulane University School of Medicine, New Orleans, Louisiana
| | - Akemi Katsurada
- Department of Physiology and Department of Medicine and Hypertension and Renal Center of Excellence, Tulane University School of Medicine, New Orleans, Louisiana
| | - Courtney M Dugas
- Department of Physiology and Department of Medicine and Hypertension and Renal Center of Excellence, Tulane University School of Medicine, New Orleans, Louisiana
| | - Vivian A Fonseca
- Department of Physiology and Department of Medicine and Hypertension and Renal Center of Excellence, Tulane University School of Medicine, New Orleans, Louisiana
| | - L Gabriel Navar
- Department of Physiology and Department of Medicine and Hypertension and Renal Center of Excellence, Tulane University School of Medicine, New Orleans, Louisiana
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25
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Peroxisomal Hydrogen Peroxide Metabolism and Signaling in Health and Disease. Int J Mol Sci 2019; 20:ijms20153673. [PMID: 31357514 PMCID: PMC6695606 DOI: 10.3390/ijms20153673] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/24/2019] [Accepted: 07/25/2019] [Indexed: 12/29/2022] Open
Abstract
Hydrogen peroxide (H2O2), a non-radical reactive oxygen species generated during many (patho)physiological conditions, is currently universally recognized as an important mediator of redox-regulated processes. Depending on its spatiotemporal accumulation profile, this molecule may act as a signaling messenger or cause oxidative damage. The focus of this review is to comprehensively evaluate the evidence that peroxisomes, organelles best known for their role in cellular lipid metabolism, also serve as hubs in the H2O2 signaling network. We first briefly introduce the basic concepts of how H2O2 can drive cellular signaling events. Next, we outline the peroxisomal enzyme systems involved in H2O2 metabolism in mammals and reflect on how this oxidant can permeate across the organellar membrane. In addition, we provide an up-to-date overview of molecular targets and biological processes that can be affected by changes in peroxisomal H2O2 metabolism. Where possible, emphasis is placed on the molecular mechanisms and factors involved. From the data presented, it is clear that there are still numerous gaps in our knowledge. Therefore, gaining more insight into how peroxisomes are integrated in the cellular H2O2 signaling network is of key importance to unravel the precise role of peroxisomal H2O2 production and scavenging in normal and pathological conditions.
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26
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Ghosh A, Zhao S, Lo CS, Maachi H, Chenier I, Lateef MA, Abdo S, Filep JG, Ingelfinger JR, Zhang SL, Chan JSD. Heterogeneous Nuclear Ribonucleoprotein F Mediates Insulin Inhibition of Bcl2-Modifying Factor Expression and Tubulopathy in Diabetic Kidney. Sci Rep 2019; 9:6687. [PMID: 31040360 PMCID: PMC6491582 DOI: 10.1038/s41598-019-43218-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 02/04/2019] [Indexed: 11/25/2022] Open
Abstract
We investigated the molecular mechanism(s) by which insulin prevents Bcl2-modifying factor (Bmf)-induced renal proximal tubular cell (RPTC) apoptosis and loss in diabetic mice. Transgenic mice (Tg) mice specifically overexpressing human BMF in RPTCs and non-Tg littermates were studied at 10 to 20 weeks of age. Non-diabetic littermates, diabetic Akita mice +/− insulin implant, Akita Tg mice specifically overexpressing heterogeneous nuclear ribonucleoprotein F (hnRNP F) in their RPTCs and immortalized rat renal proximal tubular cells (IRPTCs) were also studied. BMF-Tg mice exhibited higher systolic blood pressure, urinary albumin/creatinine ratio, RPTC apoptosis and urinary RPTCs than non-Tg mice. Insulin treatment in Akita mice and Akita mice overexpressing hnRNP F suppressed Bmf expression and RPTC apoptosis. In hyperinsulinemic-euglycemic wild type mice, renal Bmf expression was down-regulated with up-regulation of hnRNP F. In vitro, insulin inhibited high glucose-stimulation of Bmf expression, predominantly via p44/42 mitogen-activated protein kinase (MAPK) signaling. Transfection of p44/42 MAPK or hnRNP F small interfering RNA (siRNA) prevented insulin inhibition of Bmf expression. HnRNP F inhibited Bmf transcription via hnRNP F-responsive element in the Bmf promoter. Our results demonstrate that hnRNP F suppression of Bmf transcription is an important mechanism by which insulin protects RPTCs from apoptosis in diabetes.
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Affiliation(s)
- Anindya Ghosh
- Département de medecine, Université de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Saint Denis Street, Montréal, QC, H2X 0A9, Canada
| | - Shuiling Zhao
- Département de medecine, Université de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Saint Denis Street, Montréal, QC, H2X 0A9, Canada
| | - Chao-Sheng Lo
- Département de medecine, Université de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Saint Denis Street, Montréal, QC, H2X 0A9, Canada
| | - Hasna Maachi
- Département de medecine, Université de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Saint Denis Street, Montréal, QC, H2X 0A9, Canada
| | - Isabelle Chenier
- Département de medecine, Université de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Saint Denis Street, Montréal, QC, H2X 0A9, Canada
| | - Muhammad Abdul Lateef
- Département de medecine, Université de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Saint Denis Street, Montréal, QC, H2X 0A9, Canada
| | - Shaaban Abdo
- Département de medecine, Université de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Saint Denis Street, Montréal, QC, H2X 0A9, Canada
| | - Janos G Filep
- Département de pathologie et biologie cellulaire, Université de Montréal, Centre de recherche, Hôpital Maisonneuve-Rosemont, 5415 boul. de l'Assomption, Montréal, QC, H1T 2M4, Canada
| | - Julie R Ingelfinger
- Harvard Medical School, Pediatric Nephrology Unit, Massachusetts General Hospital, 15 Parkman Street, WAC 709, Boston, MA, 02114-3117, USA
| | - Shao-Ling Zhang
- Département de medecine, Université de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Saint Denis Street, Montréal, QC, H2X 0A9, Canada.
| | - John S D Chan
- Département de medecine, Université de Montréal, Centre de recherche du Centre hospitalier de l'Université de Montréal (CRCHUM), 900 Saint Denis Street, Montréal, QC, H2X 0A9, Canada.
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27
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Chen XJ, Wu WJ, Zhou Q, Jie JP, Chen X, Wang F, Gong XH. Retracted: Advanced glycation end-products induce oxidative stress through the Sirt1/Nrf2 axis by interacting with the receptor of AGEs under diabetic conditions. J Cell Biochem 2019; 120:2159-2170. [PMID: 30324763 DOI: 10.1002/jcb.27524] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2018] [Accepted: 07/30/2018] [Indexed: 02/02/2023]
Abstract
Despite the administration of exogenous insulin and other medications used to control many aspects of diabetes mellitus (DM), increased oxidative stress has been increasingly acknowledged in DM development and complications. Therefore, this study aims to investigate the role of advanced glycation end-products (AGEs) in oxidative stress (OS) of thyroid cells in patients with DM. Patients with DM with or without thyroid dysfunction (TD) were enrolled. Thyroid toxic damage was induced by adding AGE-modified bovine serum albumin (AGE-BSA) to normal human thyroid follicular epithelial cells. The cell viability, cell cycle, and cell apoptosis, as well as the content of reactive oxygen species (ROS), catalase (CAT), and malondialdehyde (MDA) in cells were measured. Thyroid hormones, T3, T4, FT3, and FT4 levels were measured by enzyme-linked immunosorbent assay. Receptor for advanced glycation end products (RAGE), sirtuin1 ( Sirt1), and NF-E2-related factor 2 ( Nrf2) expressions were detected, and the mitochondrial membrane potential was measured. We found increased AGEs in the serum of DM patients with TD. By increasing AGE-BSA concentration, cell viability; the thyroid hormones T3, T4, FT3, and FT4 levels; and mitochondrial membrane potential all significantly decreased. However, the increase in AGE-BSA concentration led to an increase in cell apoptosis, RAGE, and nuclear factor-κB expressions but produced the opposite effect on Sirt1, Nrf2, and heme oxygenase-1 expressions, as well as a decrease in antioxidant response element protein levels. The AGE-BSA increased ROS and MDA levels and reduced CAT level in normal human thyroid follicular epithelial cells on a dose independence basis. Our results demonstrated that AGEs-mediated direct increase of RAGE produced OS in thyroid cells of DM by inactivating the Sirt1/Nrf2 axis.
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Affiliation(s)
- Xiao-Jun Chen
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wen-Jun Wu
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Qi Zhou
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jin-Ping Jie
- Department of Endocrinology, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
| | - Xiong Chen
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Fang Wang
- Department of Pathology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiao-Hua Gong
- Department of Endocrinology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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28
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Pedroza A, Ferreira DS, Santana DF, da Silva PT, de Aguiar Júnior FCA, Sellitti DF, Lagranha CJ. A maternal low-protein diet and neonatal overnutrition result in similar changes to glomerular morphology and renal cortical oxidative stress measures in male Wistar rats. Appl Physiol Nutr Metab 2019; 44:164-171. [DOI: 10.1139/apnm-2018-0288] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
There is a strong correlation between inadequate gestational and postpartum nutrition and the occurrence of cardiovascular diseases. The present study investigated the effects of a maternal low-protein diet and neonatal overfeeding on the oxidative balance and morphology of the renal cortex of male Wistar rats. Two independent protocols were used. First, pregnant Wistar rats received diets containing either 17% (normal protein) or 8% (low protein) casein throughout pregnancy and lactation. Second, the litter size was reduced by one-third on the third postnatal day to induce overnourishment in offspring. At 30 days, the oxidative balance and morphology of the renal cortex were analyzed. There was a small but significant increase in renal corpuscle area in the low protein (LP, 5%) and overnutrition (ON, 8%) groups. Glomerular tuft area also increased in LP (6%) and ON (9%), as did glomerular cellularity (LP, +11%; ON, +12%). In the oxidative stress analyses, both nutritional insults significantly elevated lipid peroxidation (LP, +18%; ON, +135%) and protein oxidation (LP, +40%; ON, +65%) while significantly reducing nonenzymatic antioxidant defenses, measured as reduced glutathione (LP, –32%; ON, –45%) and total thiol content (LP, –28%; ON, –24%). We also observed a decrease in superoxide dismutase (LP, –78%; ON, –51%), catalase (LP, –18%; ON, –61%), and glutathione S-transferase (only in ON, –44%) activities. Our results demonstrate that nutritional insults, even those of a very different nature, during perinatal development can result in similar changes in oxidative parameters and glomerular morphology in the renal cortex.
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Affiliation(s)
- Anderson Pedroza
- Laboratory of Biochemistry and Exercise Biochemistry, Academic Center of Vitoria, Federal University of Pernambuco, Vitoria de Santo Antao, 55608-680, Brazil
| | - Diorginis Soares Ferreira
- Laboratory of Biochemistry and Exercise Biochemistry, Academic Center of Vitoria, Federal University of Pernambuco, Vitoria de Santo Antao, 55608-680, Brazil
| | - David F. Santana
- Laboratory of Biochemistry and Exercise Biochemistry, Academic Center of Vitoria, Federal University of Pernambuco, Vitoria de Santo Antao, 55608-680, Brazil
| | - Pedro Thiago da Silva
- Department of Biology, Academic Center of Vitoria, Federal University of Pernambuco, Vitoria de Santo Antao, 55608-680, Brazil
| | | | - Donald F. Sellitti
- Department of Anatomy, Physiology and Genetics, School of Medicine, Uniformed Services University of Health Sciences, Bethesda, MD 20814-4799, USA
| | - Claudia J. Lagranha
- Laboratory of Biochemistry and Exercise Biochemistry, Academic Center of Vitoria, Federal University of Pernambuco, Vitoria de Santo Antao, 55608-680, Brazil
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29
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Ding W, Chang WG, Guo XC, Liu Y, Xiao DD, Ding D, Wang JX, Zhang XJ. Exenatide Protects Against Cardiac Dysfunction by Attenuating Oxidative Stress in the Diabetic Mouse Heart. Front Endocrinol (Lausanne) 2019; 10:202. [PMID: 31024445 PMCID: PMC6459897 DOI: 10.3389/fendo.2019.00202] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 03/12/2019] [Indexed: 01/01/2023] Open
Abstract
Cardiovascular disease is the major cause of death in patients with diabetes. Current treatment strategies for diabetes rely on lifestyle changes and glucose control to prevent angiopathy and organ failure. Exenatide, a glucagon-like peptide-1 (GLP-1) receptor agonist, is used as an add-on therapy to insulin treatment. Exenatide also has multiple beneficial effects in addition to its hypoglycemic effects, such as preventing hepatic steatosis and protecting against cardiac injury from doxorubicin-induced cardiotoxicity or ischemic reperfusion. However, the mechanisms underlying the cardioprotective effects of exenatide in diabetes have not been fully clarified. To address this issue, we investigated the cardioprotective effects of exenatide in type 1 and type 2 diabetic mice. We found that exenatide simultaneously attenuated reactive oxidative species (ROS) production through increases in the antioxidant enzymes manganese dependent superoxide dismutase (MnSOD) and catalase. Moreover, exenatide decreased tumor protein P53 (p53) expression and prevented cell apoptosis in H9c2 cells. The presence of the catalase inhibitor 3-AT attenuated the effects of exenatide. Overall, the results strongly indicate that exenatide treatment may be protective against the development of diabetic cardiomyopathy.
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Affiliation(s)
- Wei Ding
- Department of General Medicine, The Affiliated Hospital, Qingdao University, Qingdao, China
| | - Wen-guang Chang
- Center for Regenerative Medicine, Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Xiao-ci Guo
- Department of General Medicine, The Affiliated Hospital, Qingdao University, Qingdao, China
| | - Ying Liu
- Center for Regenerative Medicine, Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Dan-dan Xiao
- Center for Regenerative Medicine, Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Dan Ding
- Center for Regenerative Medicine, Institute for Translational Medicine, Qingdao University, Qingdao, China
| | - Jian-xun Wang
- Center for Regenerative Medicine, Institute for Translational Medicine, Qingdao University, Qingdao, China
- School of Basic Medical Sciences, Qingdao University, Qingdao, China
- *Correspondence: Jian-xun Wang
| | - Xue-juan Zhang
- Department of General Medicine, The Affiliated Hospital, Qingdao University, Qingdao, China
- Xue-juan Zhang
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30
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Lee E, Lee HS. Peroxidase expression is decreased by palmitate in cultured podocytes but increased in podocytes of advanced diabetic nephropathy. J Cell Physiol 2018; 233:9060-9069. [PMID: 30132841 PMCID: PMC6686159 DOI: 10.1002/jcp.26875] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 05/23/2018] [Indexed: 01/10/2023]
Abstract
High levels of serum free fatty acids (FFAs) are associated with lipotoxicity and type 2 diabetes. Palmitic acid (PA) is the predominant circulating saturated FFA. PA induces mitochondrial superoxide and hydrogen peroxide (H2O
2) generation in cultured podocytes. To elucidate the role of PA in antioxidant defense systems in diabetic nephropathy (DN), cultured podocytes were exposed to 250 μM PA for 1–24 hr, and protein expressions of catalase, peroxiredoxins (Prxs), and glutathione peroxidase (GPx) were examined by western blot analysis. PA induced an early transient increase in the Prx1, Prx2, and GPx1 levels in podocytes, but not catalase. Long‐term exposure of PA to podocytes significantly decreased the protein levels of Prx1, Prx2, GPx1, and catalase. Coincubation of PA‐treated cells with oleic acid, however, restored the expression of these proteins. In advanced human diabetic glomeruli, H2O2 generation was elevated as shown by increased fluorescence of dichlorofluorescein. Strong immunostaining for Prx1, Prx2, GPx1, and catalase was observed in the podocytes of advanced human DN, wherein transforming growth factor‐β1 staining was also positive. These results suggest that podocytes are susceptible to PA‐induced oxidative damage with impaired peroxidase activity and that peroxidases have futile antioxidant effects in the podocytes in the late stages of DN. Given this, PA‐induced podocyte injury via inadequate peroxidase response to H2O2 appears to play an important role in the pathogenesis of DN.
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Affiliation(s)
- Eugene Lee
- Renal Pathology Lab, Hankook Kidney and Diabetes Institute, Seoul, Korea
| | - Hyun Soon Lee
- Renal Pathology Lab, Hankook Kidney and Diabetes Institute, Seoul, Korea
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31
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Catalase and nonalcoholic fatty liver disease. Pflugers Arch 2018; 470:1721-1737. [PMID: 30120555 DOI: 10.1007/s00424-018-2195-z] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 08/01/2018] [Accepted: 08/06/2018] [Indexed: 02/06/2023]
Abstract
Obesity and insulin resistance are considered the main causes of nonalcoholic fatty liver disease (NAFLD), and oxidative stress accelerates the progression of NAFLD. Free fatty acids, which are elevated in the liver by obesity or insulin resistance, lead to incomplete oxidation in the mitochondria, peroxisomes, and microsomes, leading to the production of reactive oxygen species (ROS). Among the ROS generated, H2O2 is mainly produced in peroxisomes and decomposed by catalase. However, when the H2O2 concentration increases because of decreased expression or activity of catalase, it migrates to cytosol and other organelles, causing cell injury and participating in the Fenton reaction, resulting in serious oxidative stress. To date, numerous studies have been shown to inhibit the pathogenesis of NAFLD, but treatment for this disease mainly depends on weight loss and exercise. Various molecules such as vitamin E, metformin, liraglutide, and resveratrol have been proposed as therapeutic agents, but further verification of the dose setting, clinical application, and side effects is needed. Reducing oxidative stress may be a fundamental method for improving not only the progression of NAFLD but also obesity and insulin resistance. However, the relationship between NAFLD progression and antioxidants, particularly catalase, which is most commonly expressed in the liver, remains unclear. Therefore, this review summarizes the role of catalase, focusing on its potential therapeutic effects in NAFLD progression.
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32
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Hong Q, Zhang L, Das B, Li Z, Liu B, Cai G, Chen X, Chuang PY, He JC, Lee K. Increased podocyte Sirtuin-1 function attenuates diabetic kidney injury. Kidney Int 2018; 93:1330-1343. [PMID: 29477240 PMCID: PMC5967974 DOI: 10.1016/j.kint.2017.12.008] [Citation(s) in RCA: 141] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 11/09/2017] [Accepted: 12/13/2017] [Indexed: 02/08/2023]
Abstract
Podocyte injury and loss contribute to the progression of glomerular diseases, including diabetic kidney disease. We previously found that the glomerular expression of Sirtuin-1 (SIRT1) is reduced in human diabetic glomeruli and that the podocyte-specific loss of SIRT1 aggravated albuminuria and worsened kidney disease progression in diabetic mice. SIRT1 encodes an NAD-dependent deacetylase that modifies the activity of key transcriptional regulators affected in diabetic kidneys, including NF-κB, STAT3, p53, FOXO4, and PGC1-α. However, whether the increased glomerular SIRT1 activity is sufficient to ameliorate the pathogenesis of diabetic kidney disease has not been explored. We addressed this by inducible podocyte-specific SIRT1 overexpression in diabetic OVE26 mice. The induction of SIRT1 overexpression in podocytes for six weeks in OVE26 mice with established albuminuria attenuated the progression of diabetic glomerulopathy. To further validate the therapeutic potential of increased SIRT1 activity against diabetic kidney disease, we developed a new, potent and selective SIRT1 agonist, BF175. In cultured podocytes BF175 increased SIRT1-mediated activation of PGC1-α and protected against high glucose-mediated mitochondrial injury. In vivo, administration of BF175 for six weeks in OVE26 mice resulted in a marked reduction in albuminuria and in glomerular injury in a manner similar to podocyte-specific SIRT1 overexpression. Both podocyte-specific SIRT1 overexpression and BT175 treatment attenuated diabetes-induced podocyte loss and reduced oxidative stress in glomeruli of OVE26 mice. Thus, increased SIRT1 activity protects against diabetes-induced podocyte injury and effectively mitigates the progression of diabetic kidney disease.
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Affiliation(s)
- Quan Hong
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center of Kidney Diseases, Beijing, China
| | - Lu Zhang
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Department of Nephrology, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Bhaskar Das
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Zhengzhe Li
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Bohan Liu
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Guangyan Cai
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center of Kidney Diseases, Beijing, China
| | - Xiangmei Chen
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center of Kidney Diseases, Beijing, China
| | - Peter Y Chuang
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - John Cijiang He
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA; Renal Section, James J Peters VAMC, Bronx, New York, USA.
| | - Kyung Lee
- Department of Medicine, Division of Nephrology, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
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Sepasi Tehrani H, Moosavi-Movahedi AA. Catalase and its mysteries. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2018. [PMID: 29530789 DOI: 10.1016/j.pbiomolbio.2018.03.001] [Citation(s) in RCA: 151] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalase is one of the firsts in every realm of biological sciences. At the same time it also has a number of unusual features. It has one of the highest turnover numbers of all enzymes. It is essential for neutralizing the noxious hydrogen peroxide both in the nature and the various industries such as dairy, textile and pharmaceutics. It also has the merit of being one of the first protein crystals to be isolated. Ironically its three-dimensional structure was discerned some forty years later. However through the times this senile enzyme has continued to intrigue the scientists by surprising facts and phenomena, such as peculiar interweaving of subunits and remarkable thermal stability. It is also known for suicide inactivation by its own substrate. Catalase is known to be implicated in various medical scenarios and its levels have served as a marker in that capacity. It has even been incorporated into several pharmaceuticals. This review strives to clarify these perspectives. It also draws attention to the biophysical contributions offered by thermodynamics and kinetics in these discoveries. The ultimate aim of this review, however, is to state that the venerable catalase will continue to bewilder us with its mysteries well into the twenty-first century.
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Affiliation(s)
- Hessam Sepasi Tehrani
- Department of Biology, Islamic Azad University, Science and Research Branch, Tehran, Iran.
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Yang D, Livingston MJ, Liu Z, Dong G, Zhang M, Chen JK, Dong Z. Autophagy in diabetic kidney disease: regulation, pathological role and therapeutic potential. Cell Mol Life Sci 2018; 75:669-688. [PMID: 28871310 PMCID: PMC5771948 DOI: 10.1007/s00018-017-2639-1] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 08/29/2017] [Accepted: 08/31/2017] [Indexed: 12/17/2022]
Abstract
Diabetic kidney disease, a leading cause of end-stage renal disease, has become a serious public health problem worldwide and lacks effective therapies. Autophagy is a highly conserved lysosomal degradation pathway that removes protein aggregates and damaged organelles to maintain cellular homeostasis. As important stress-responsive machinery, autophagy is involved in the pathogenesis of various diseases. Emerging evidence has suggested that dysregulated autophagy may contribute to both glomerular and tubulointerstitial pathologies in kidneys under diabetic conditions. This review summarizes the recent findings regarding the role of autophagy in the pathogenesis of diabetic kidney disease and highlights the regulation of autophagy by the nutrient-sensing pathways and intracellular stress signaling in this disease. The advances in our understanding of autophagy in diabetic kidney disease will facilitate the discovery of a new therapeutic target for the prevention and treatment of this life-threatening diabetes complication.
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Affiliation(s)
- Danyi Yang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China
| | - Man J Livingston
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA
| | - Zhiwen Liu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China
| | - Guie Dong
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA
| | - Ming Zhang
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA
| | - Jian-Kang Chen
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA
| | - Zheng Dong
- Department of Nephrology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, People's Republic of China.
- Department of Cellular Biology and Anatomy, Medical College of Georgia at Augusta University and Charlie Norwood VA Medical Center, 1459 Laney Walker Blvd, Augusta, GA, 30912, USA.
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Zhao S, Ghosh A, Lo CS, Chenier I, Scholey JW, Filep JG, Ingelfinger JR, Zhang SL, Chan JSD. Nrf2 Deficiency Upregulates Intrarenal Angiotensin-Converting Enzyme-2 and Angiotensin 1-7 Receptor Expression and Attenuates Hypertension and Nephropathy in Diabetic Mice. Endocrinology 2018; 159:836-852. [PMID: 29211853 PMCID: PMC5774246 DOI: 10.1210/en.2017-00752] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 11/28/2017] [Indexed: 11/19/2022]
Abstract
We investigated the role of nuclear factor erythroid 2-related factor 2 (Nrf2) in renin-angiotensin system (RAS) gene expression in renal proximal tubule cells (RPTCs) and in the development of systemic hypertension and kidney injury in diabetic Akita mice. We used adult male Akita Nrf2 knockout mice and Akita mice treated with trigonelline (an Nrf2 inhibitor) or oltipraz (an Nrf2 activator). We also examined rat immortalized RPTCs (IRPTCs) stably transfected with control plasmids or plasmids containing rat angiotensinogen (Agt), angiotensin-converting enzyme (ACE), angiotensin-converting enzyme-2 (Ace2), or angiotensin 1-7 (Ang 1-7) receptor (MasR) gene promoters. Genetic deletion of Nrf2 or pharmacological inhibition of Nrf2 in Akita mice attenuated hypertension, renal injury, tubulointerstitial fibrosis, and the urinary albumin/creatinine ratio. Furthermore, loss of Nrf2 upregulated RPTC Ace2 and MasR expression, increased urinary Ang 1-7 levels, and downregulated expression of Agt, ACE, and profibrotic genes in Akita mice. In cultured IRPTCs, Nrf2 small interfering RNA transfection or trigonelline treatment prevented high glucose stimulation of Nrf2 nuclear translocation, Agt, and ACE transcription with augmentation of Ace2 and MasR transcription, which was reversed by oltipraz. These data identify a mechanism, Nrf2-mediated stimulation of intrarenal RAS gene expression, by which chronic hyperglycemia induces hypertension and renal injury in diabetes.
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MESH Headings
- Angiotensin I/metabolism
- Angiotensin-Converting Enzyme 2
- Animals
- Cells, Cultured
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetic Nephropathies/genetics
- Diabetic Nephropathies/metabolism
- Diabetic Nephropathies/pathology
- Gene Expression Regulation, Enzymologic
- Hypertension/complications
- Hypertension/genetics
- Hypertension/metabolism
- Hypertension/pathology
- Kidney/metabolism
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Transgenic
- NF-E2-Related Factor 2/genetics
- Peptide Fragments/metabolism
- Peptidyl-Dipeptidase A/genetics
- Peptidyl-Dipeptidase A/metabolism
- Rats
- Receptor, Angiotensin, Type 2/genetics
- Receptor, Angiotensin, Type 2/metabolism
- Renin-Angiotensin System/genetics
- Renin-Angiotensin System/physiology
- Up-Regulation/genetics
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Affiliation(s)
- Shuiling Zhao
- Centre de Recherche, Centre Hospitalier de l’Université de Montréal and Département de Médecine, Université de Montréal, Montréal, Quebec H2X 0A9, Canada
| | - Anindya Ghosh
- Centre de Recherche, Centre Hospitalier de l’Université de Montréal and Département de Médecine, Université de Montréal, Montréal, Quebec H2X 0A9, Canada
| | - Chao-Sheng Lo
- Centre de Recherche, Centre Hospitalier de l’Université de Montréal and Département de Médecine, Université de Montréal, Montréal, Quebec H2X 0A9, Canada
| | - Isabelle Chenier
- Centre de Recherche, Centre Hospitalier de l’Université de Montréal and Département de Médecine, Université de Montréal, Montréal, Quebec H2X 0A9, Canada
| | - James W. Scholey
- University Health Network-Toronto General Hospital and Department of Medicine, University of Toronto, Toronto, Ontario M5G 2C4, Canada
| | - Janos G. Filep
- Centre de Recherche, Hôpital Maisonneuve-Rosemont and Département de Pathologie et Biologie Cellulaire, Université de Montréal, Montréal, Quebec H1T 2M4, Canada
| | - Julie R. Ingelfinger
- Pediatric Nephrology Unit, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114-3117
| | - Shao-Ling Zhang
- Centre de Recherche, Centre Hospitalier de l’Université de Montréal and Département de Médecine, Université de Montréal, Montréal, Quebec H2X 0A9, Canada
| | - John S. D. Chan
- Centre de Recherche, Centre Hospitalier de l’Université de Montréal and Département de Médecine, Université de Montréal, Montréal, Quebec H2X 0A9, Canada
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Fakhruddin S, Alanazi WA, Alhamami HN, Briski KP, Jackson KE. Hyperglycaemia induced by chronic i.p. and oral glucose loading leads to hypertension through increased Na + retention in proximal tubule. Exp Physiol 2018; 103:236-249. [PMID: 29114945 DOI: 10.1113/ep086604] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 11/03/2017] [Indexed: 12/11/2022]
Abstract
NEW FINDINGS What is the central question of the study? Chronic glucose feeding accompanied by glucose injection (i.p.) causes sustained hyperglycaemia and hypertension in rats. The exact reason for the hypertension is not known. We explore some molecular pathways of the renal proximal tubule that might promote Na+ retention. What is the main finding and its importance? Development of hypertension was mediated by upregulation of the renal renin-angiotensin system and oxidative stress, acting via the Na+ -K+ -ATPase α1 -subunit in the proximal tubule, which appears to pump intracellular Na+ into the extracellular space, increasing Na+ reabsorption and blood pressure. Targeting the Na+ -K+ -ATPase α1 -subunit might provide a therapeutic strategy for treatment of hypertension. Feeding animals glucose-, fructose-, sucrose- and fat-enriched diets can lead to diet-induced hyperglycaemia, the severity of which largely depends on the types and concentrations of the nutrients used and duration of the dietary intervention. As a dietary intervention strategy, we adopted glucose-enriched diet and drinking water, with i.p. glucose injection at a dose previously determined to be effective to establish a sustained hyperglycaemia over a period of 2 weeks. We used four groups of Sprague-Dawley rats: control; glucose treated; glucose plus tempol treated; and glucose plus captopril treated. Blood glucose concentrations started to increase gradually from day 3, peaked (321 mg dl-1 ) at day 12 and remained at similar levels until the end of the study on day 14 in the glucose treated-group compared with the control group. In contrast, the tempol- and captopril-treated groups showed significantly high glucose concentrations only in the second week. The plasma insulin concentration was significantly increased in glucose-treated animals but not in tempol- and captopril-treated groups when compared with the control rats. We also observed elevated blood pressure in the glucose-treated group compared with the control group, which can be attributed to the increase in angiotensin II concentrations from 46.67 to 99 pg ml-1 (control versus glucose), increased oxidative stress in the cortical proximal tubule (PT), decreased urine flow, and increased expression and activity of the PT-specific α1 -subunit of Na+ -K+ -ATPase in the renal cortex, which is responsible for increased sodium reabsorption from epithelial cells of PT into the peritubular capillaries, leading to increased blood volume and eventual blood pressure. All these events were reversed in captopril- and tempol-treated animals.
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Affiliation(s)
- Selim Fakhruddin
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe (ULM), Monroe, LA, USA
| | - Wael A Alanazi
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe (ULM), Monroe, LA, USA
| | - Hussain N Alhamami
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe (ULM), Monroe, LA, USA
| | - Karen P Briski
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe (ULM), Monroe, LA, USA
| | - Keith E Jackson
- Department of Basic Pharmaceutical Sciences, School of Pharmacy, University of Louisiana at Monroe (ULM), Monroe, LA, USA
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Zhong Y, Lee K, He JC. SIRT1 Is a Potential Drug Target for Treatment of Diabetic Kidney Disease. Front Endocrinol (Lausanne) 2018; 9:624. [PMID: 30386303 PMCID: PMC6199382 DOI: 10.3389/fendo.2018.00624] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 10/01/2018] [Indexed: 11/13/2022] Open
Abstract
Multiple studies have demonstrated a critical role of Sirtuin-1 (SIRT1) deacetylase in protecting kidney cells from cellular stresses. A protective role of SIRT1 has been reported in both podocytes and renal tubular cells in multiple kidney disease settings, including diabetic kidney disease (DKD). We and others have shown that SIRT1 exerts renoprotective effects in DKD in part through the deacetylation of transcription factors involved in the disease pathogenesis, such as p53, FOXO, RelA/p65NF-κB, STAT3, and PGC1α/PPARγ. Recently we showed that the podocyte-specific overexpression of SIRT1 attenuated proteinuria and kidney injury in an experimental model of DKD, further confirming SIRT1 as a potential target to treat kidney disease. Known agonists of SIRT1 such as resveratrol diminished diabetic kidney injury in several animal models. Similarly, we also showed that puerarin, a Chinese herbal medicine compound, activates SIRT1 to provide renoprotection in mouse models of DKD. However, as these are non-specific SIRT1 agonists, we recently developed a more specific and potent SIRT1 agonist (BF175) that significantly attenuated diabetic kidney injury in type 1 diabetic OVE26 mice. We also previously reported that MS417, a bromodomain inhibitor that disrupts the interaction between the acetyl-residues of NF-κB and bromodomain-containing protein 4 (BRD4) also attenuates DKD. These results suggest that SIRT1 agonists and bromodomain inhibitors could be potential new therapuetic treatments against DKD progression.
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Affiliation(s)
- Yifei Zhong
- Division of Nephrology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- *Correspondence: Yifei Zhong
| | - Kyung Lee
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York City, NY, United States
| | - John Cijiang He
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York City, NY, United States
- Renal Section, James J. Peters VA Medical Center, Bronx, NY, United States
- John Cijiang He
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Ishigaki S, Ohashi N, Matsuyama T, Isobe S, Tsuji N, Iwakura T, Fujikura T, Tsuji T, Kato A, Miyajima H, Yasuda H. Melatonin ameliorates intrarenal renin-angiotensin system in a 5/6 nephrectomy rat model. Clin Exp Nephrol 2017; 22:539-549. [PMID: 29159527 DOI: 10.1007/s10157-017-1505-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Accepted: 11/06/2017] [Indexed: 12/15/2022]
Abstract
BACKGROUND Activation of the intrarenal renin-angiotensin system (RAS) plays a critical role in the pathophysiology of chronic kidney disease (CKD) and hypertension. It has been reported that reactive oxygen species (ROS) are important components of intrarenal RAS activation. Melatonin is recognized as a powerful antioxidant, and we recently reported that impaired nighttime melatonin secretion correlates negatively with urinary angiotensinogen excretion, the surrogate marker of intrarenal RAS activity in patients with CKD. However, whether melatonin supplementation ameliorates the augmentation of intrarenal RAS in CKD has remained unknown. We aimed to clarify whether exogenous melatonin ameliorates intrarenal RAS activation via the reduction of ROS production. METHODS 5/6 Nephrectomized (Nx) rats were used as a chronic progressive CKD model and compared with sham-operated control rats. The Nx rats were divided into untreated Nx rats and melatonin-treated Nx rats. The levels of intrarenal RAS, ROS components, and renal injury were evaluated after 4 weeks of treatment. RESULTS Compared with the control rats, the untreated Nx rats exhibited significant increases in intrarenal angiotensinogen, angiotensin II (AngII) type 1 receptors, and AngII, accompanied by elevated blood pressure, higher oxidative stress (8-hydroxy-2'-deoxyguanosine), lower antioxidant (superoxide dismutase) activity, and increased markers of interstitial fibrosis (α-smooth muscle actin, Snail, and type I collagen) in the remnant kidneys. Treatment with melatonin significantly reversed these abnormalities. CONCLUSION Antioxidant treatment with melatonin was shown to ameliorate intrarenal RAS activation and renal injury in a 5/6 Nx rat model.
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Affiliation(s)
- Sayaka Ishigaki
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Naro Ohashi
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan.
| | - Takashi Matsuyama
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Shinsuke Isobe
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Naoko Tsuji
- Blood Purification Unit, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Takamasa Iwakura
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Tomoyuki Fujikura
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Takayuki Tsuji
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Akihiko Kato
- Blood Purification Unit, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Hiroaki Miyajima
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
| | - Hideo Yasuda
- Internal Medicine 1, Hamamatsu University School of Medicine, 1-20-1 Handayama Higashi-ku, Hamamatsu, 431-3192, Japan
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Aluksanasuwan S, Khamchun S, Thongboonkerd V. Targeted functional investigations guided by integrative proteome network analysis revealed significant perturbations of renal tubular cell functions induced by high glucose. Proteomics 2017; 17. [DOI: 10.1002/pmic.201700151] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 06/09/2017] [Accepted: 06/23/2017] [Indexed: 12/24/2022]
Affiliation(s)
- Siripat Aluksanasuwan
- Medical Proteomics Unit, Office for Research and Development; and Graduate Program in Immunology, Department of Immunology, Faculty of Medicine Siriraj Hospital; and Center for Research in Complex Systems Science; Mahidol University; Bangkok Thailand
| | - Supaporn Khamchun
- Medical Proteomics Unit, Office for Research and Development; and Graduate Program in Immunology, Department of Immunology, Faculty of Medicine Siriraj Hospital; and Center for Research in Complex Systems Science; Mahidol University; Bangkok Thailand
| | - Visith Thongboonkerd
- Medical Proteomics Unit, Office for Research and Development; and Graduate Program in Immunology, Department of Immunology, Faculty of Medicine Siriraj Hospital; and Center for Research in Complex Systems Science; Mahidol University; Bangkok Thailand
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Morato M, Correia-Costa L, Sousa T, Cosme D, Schaefer F, Areias JC, Guerra A, Afonso AC, Barros H, Azevedo A, Albino-Teixeira A. Longer duration of obesity is associated with a reduction in urinary angiotensinogen in prepubertal children. Pediatr Nephrol 2017; 32:1411-1422. [PMID: 28337615 DOI: 10.1007/s00467-017-3639-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 02/27/2017] [Accepted: 02/27/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND We aimed to study the impact of obesity on urinary excretion of angiotensinogen (U-AGT) in prepubertal children, focusing on the duration of obesity and gender. Also, we aimed to evaluate whether plasma angiotensinogen (P-AGT) and hydrogen peroxide (H2O2) play a role in the putative association. METHODS Cross-sectional evaluation of 305 children aged 8-9 years (160 normal weight, 86 overweight, and 59 obese). Anthropometric measurements and 24-h ambulatory blood pressure monitoring were performed. Angiotensinogen (AGT) was determined by a commercial enzyme-linked immunosorbent assay (ELISA) kit and H2O2 by a microplate fluorometric assay. RESULTS U-AGT and P-AGT levels were similar across body mass index (BMI) groups and between sexes. However, boys who were overweight/obese since the age of 4 years presented lower levels of U-AGT compared with those of normal weight at the same age. In children who were overweight/obese since the age of 4, urinary H2O2 decreased with P-AGT. CONCLUSIONS A higher duration of obesity was associated with decreased U-AGT in boys, thus reflecting decreased intrarenal activity of the renin-angiotensin system. Also, children with a longer duration of obesity showed an inverse association between urinary H2O2 and P-AGT. Future studies should address whether these results reflect an early compensatory mechanism to limit obesity-triggered renal dysfunction.
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Affiliation(s)
- Manuela Morato
- Department of Pharmacology and Therapeutics, Faculty of Medicine of University of Porto, Porto, Portugal.
- Department of Drug Sciences, Laboratory of Pharmacology, Faculty of Pharmacy of the University of Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313, Porto, Portugal.
- MedInUP - Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal.
- Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy of University of Porto, Porto, Portugal.
| | - Liane Correia-Costa
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal
- Division of Pediatric Nephrology, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
- Department of Pediatrics, Faculty of Medicine of University of Porto, Porto, Portugal
| | - Teresa Sousa
- Department of Pharmacology and Therapeutics, Faculty of Medicine of University of Porto, Porto, Portugal
- MedInUP - Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal
| | - Dina Cosme
- Department of Pharmacology and Therapeutics, Faculty of Medicine of University of Porto, Porto, Portugal
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal
| | - Franz Schaefer
- Division of Pediatric Nephrology, Center for Pediatrics and Adolescent Medicine, University of Heidelberg, Heidelberg, Germany
| | - José Carlos Areias
- Division of Pediatric Cardiology, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
| | - António Guerra
- Department of Pediatrics, Faculty of Medicine of University of Porto, Porto, Portugal
- Division of Pediatric Nutrition, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
- CINTESIS - Center for Research in Health Technologies and Information Systems, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Alberto Caldas Afonso
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal
- Division of Pediatric Nephrology, Integrated Pediatric Hospital, Centro Hospitalar São João, Porto, Portugal
- Department of Pediatrics, Faculty of Medicine of University of Porto, Porto, Portugal
| | - Henrique Barros
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal
- Department of Clinical Epidemiology, Predictive Medicine and Public Health, Faculty of Medicine of University of Porto, Porto, Portugal
| | - Ana Azevedo
- EPIUnit - Institute of Public Health, University of Porto, Porto, Portugal
- Department of Clinical Epidemiology, Predictive Medicine and Public Health, Faculty of Medicine of University of Porto, Porto, Portugal
| | - António Albino-Teixeira
- Department of Pharmacology and Therapeutics, Faculty of Medicine of University of Porto, Porto, Portugal
- MedInUP - Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal
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Lo CS, Shi Y, Chenier I, Ghosh A, Wu CH, Cailhier JF, Ethier J, Lattouf JB, Filep JG, Ingelfinger JR, Zhang SL, Chan JSD. Heterogeneous Nuclear Ribonucleoprotein F Stimulates Sirtuin-1 Gene Expression and Attenuates Nephropathy Progression in Diabetic Mice. Diabetes 2017; 66:1964-1978. [PMID: 28424160 PMCID: PMC5482081 DOI: 10.2337/db16-1588] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 04/10/2017] [Indexed: 12/19/2022]
Abstract
We investigated the mechanism of heterogeneous nuclear ribonucleoprotein F (hnRNP F) renoprotective action in a type 2 diabetes (T2D) mouse model (db/db). Immortalized rat renal proximal tubular cells (IRPTCs) and kidneys from humans with T2D were also studied. The db/db mice developed hyperglycemia, oxidative stress, and nephropathy at age 20 weeks compared with their db/m littermates. These abnormalities, with the exception of hyperglycemia, were attenuated in db/dbhnRNP F-transgenic (Tg) mice specifically overexpressing hnRNP F in their RPTCs. Sirtuin-1, Foxo3α, and catalase expression were significantly decreased in RPTCs from db/db mice and normalized in db/dbhnRNP F-Tg mice. In vitro, hnRNP F overexpression stimulated Sirtuin-1 and Foxo3α with downregulation of acetylated p53 expression and prevented downregulation of Sirtuin-1 and Foxo3α expression in IRPTCs by high glucose plus palmitate. Transfection of Sirtuin-1 small interfering RNA prevented hnRNP F stimulation of Foxo3α and downregulation of acetylated p53 expression. hnRNP F stimulated Sirtuin-1 transcription via hnRNP F-responsive element in the Sirtuin-1 promoter. Human T2D kidneys exhibited more RPTC apoptosis and lower expression of hnRNP F, SIRTUIN-1, and FOXO3α than nondiabetic kidneys. Our results demonstrate that hnRNP F protects kidneys against oxidative stress and nephropathy via stimulation of Sirtuin-1 expression and signaling in diabetes.
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MESH Headings
- Acetylation
- Aged
- Animals
- Apoptosis
- Blotting, Western
- Case-Control Studies
- Cells, Cultured
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Diabetic Nephropathies/etiology
- Diabetic Nephropathies/genetics
- Diabetic Nephropathies/metabolism
- Disease Models, Animal
- Disease Progression
- Female
- Fibrosis
- Forkhead Box Protein O3
- Gene Expression Regulation/genetics
- Heterogeneous-Nuclear Ribonucleoprotein Group F-H/genetics
- Heterogeneous-Nuclear Ribonucleoprotein Group F-H/metabolism
- Humans
- Immunohistochemistry
- In Situ Nick-End Labeling
- In Vitro Techniques
- Kidney/metabolism
- Kidney/pathology
- Kidney Tubules, Proximal/metabolism
- Male
- Mice
- Mice, Knockout
- Mice, Transgenic
- Middle Aged
- Oxidative Stress
- Rats
- Real-Time Polymerase Chain Reaction
- Receptors, Leptin/genetics
- Sirtuin 1/genetics
- Sirtuin 1/metabolism
- Tumor Suppressor Protein p53/metabolism
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Affiliation(s)
- Chao-Sheng Lo
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
| | - Yixuan Shi
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
| | - Isabelle Chenier
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
| | - Anindya Ghosh
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
| | - Chin-Han Wu
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
| | - Jean-Francois Cailhier
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
| | - Jean Ethier
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
| | - Jean-Baptiste Lattouf
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
| | - Janos G Filep
- Centre de recherche, Hôpital Maisonneuve-Rosemont and Department of Pathology and Cell Biology, Université de Montréal, Montreal, QC, Canada
| | - Julie R Ingelfinger
- Pediatric Nephrology Unit, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Shao-Ling Zhang
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
| | - John S D Chan
- Centre de recherche, Centre hospitalier de l'Université de Montréal (CRCHUM) and Département de médecine, Université de Montréal, Montreal, QC, Canada
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42
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Yang F, Li B, Dong X, Cui W, Luo P. The beneficial effects of zinc on diabetes-induced kidney damage in murine rodent model of type 1 diabetes mellitus. J Trace Elem Med Biol 2017; 42:1-10. [PMID: 28595780 DOI: 10.1016/j.jtemb.2017.03.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 03/07/2017] [Accepted: 03/08/2017] [Indexed: 02/06/2023]
Abstract
Diabetes mellitus is a chronic multi-factorial metabolic disorder resulting from impaired glucose homeostasis. Zinc is a key co-factor for the correct functioning of anti-oxidant enzymes. Zinc deficiency therefore, impairs their synthesis, leading to increased oxidative stress within cells. Zinc deficiency occurs commonly in diabetic patients. The aim of this study is to investigate the effects of varying concentrations of zinc on diabetic nephropathy (DN) and the underlying mechanisms involved. FVB male mice aged 8 weeks were injected intraperitoneally with multiple low-dose streptozotocin at a concentration of 50mg/kg body weight daily for 5 days. Diabetic and age-matched control mice were treated with special diets supplemented with zinc at varying concentrations (0.85mg/kg, 30mg/kg, 150mg/kg) for 3 months. The mice were fed with zinc diets to mimic the process of oral administration of zinc in human. Zinc deficiency to some extent aggravated the damage of diabetic kidney. Feeding with normal (30mg/kg zinc/kg diet) and especially high (150mg/kg zinc/kg diet) concentration zinc could protect the kidney against diabetes-induced damage. The beneficial effects of zinc on DN are achieved most likely due to the upregulation of Nrf2 and its downstream factors NQO1, SOD1, SOD2. Zinc upregulated the expression of Akt phosphorylation and GSK-3β phosphorylation, resulting in a reduction in Fyn nuclear translocation and export of Nrf2 to the cytosol. Thus, regular monitoring and maintaining of adequate levels of zinc are recommended in diabetic individuals in order to delay the development of DN.
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Affiliation(s)
- Fan Yang
- The Department of Nephropathy, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun 130041, China
| | - Bing Li
- The Department of Nephropathy, Jilin Province People's Hospital, Changchun China
| | - Xiaoming Dong
- The Department of Orthopaedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun 130041, China
| | - Wenpeng Cui
- The Department of Nephropathy, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun 130041, China
| | - Ping Luo
- The Department of Nephropathy, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun 130041, China.
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43
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Murine recombinant angiotensin-converting enzyme 2 attenuates kidney injury in experimental Alport syndrome. Kidney Int 2017; 91:1347-1361. [DOI: 10.1016/j.kint.2016.12.022] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 12/20/2016] [Accepted: 12/22/2016] [Indexed: 01/11/2023]
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44
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Choi MS, Jeong MJ, Park YB, Kim SR, Jung UJ. The Leaf of Diospyros kaki Thumb Ameliorates Renal Oxidative Damage in Mice with Type 2 Diabetes. Prev Nutr Food Sci 2016; 21:378-383. [PMID: 28078262 PMCID: PMC5216891 DOI: 10.3746/pnf.2016.21.4.378] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Accepted: 12/06/2016] [Indexed: 01/10/2023] Open
Abstract
Diabetic kidney disease is the most common and severe chronic complication of diabetes. The leaf of Diospyros kaki Thumb (persimmon) has been commonly used for herbal tea and medicinal purposes to treat a variety of conditions, including hypertension and atherosclerosis. However, the effect of persimmon leaf on kidney failure has not been investigated. This study aimed to examine the role of persimmon leaf in protecting the diabetes-associated kidney damage in a mouse model of type 2 diabetes. Mice were fed either a normal chow diet with or without powered persimmon leaf (5%, w/w) for 5 weeks. In addition to kidney morphology and blood markers of kidney function, we assessed levels of oxidative stress markers as well as antioxidant enzymes activities and mRNA expression in the kidney. Supplementation of the diet with powered persimmon leaf not only decreased the concentration of blood urea nitrogen in the plasma but also improved glomerular hypertrophy. Furthermore, the persimmon leaf significantly decreased the levels of hydrogen peroxide and lipid peroxide in the kidney. The activities of superoxide dismutase, catalase, and glutathione peroxidase and the mRNA expression of their respective genes were also increased in the kidney of persimmon leaf-supplemented db/db mice. Taken together, these results suggest that supplementation with the persimmon leaf may have protective effects against type 2 diabetes-induced kidney dysfunction and oxidative stress.
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Affiliation(s)
- Myung-Sook Choi
- Department of Food Science and Nutrition, Kyungpook National University, Daegu 41566, Korea
| | - Mi Ji Jeong
- Department of Food Science and Nutrition, Pukyong National University, Busan 48513, Korea
| | - Yong Bok Park
- School of Life Sciences and Biotechnology, Kyungpook National University, Daegu 41566, Korea
| | - Sang Ryong Kim
- School of Life Sciences and Biotechnology, Kyungpook National University, Daegu 41566, Korea
| | - Un Ju Jung
- Department of Food Science and Nutrition, Pukyong National University, Busan 48513, Korea
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45
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Dugbartey GJ. Diabetic nephropathy: A potential savior with 'rotten-egg' smell. Pharmacol Rep 2016; 69:331-339. [PMID: 28183033 DOI: 10.1016/j.pharep.2016.11.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 10/20/2016] [Accepted: 11/09/2016] [Indexed: 02/06/2023]
Abstract
Diabetic nephropathy (DN) is currently the leading cause of end-stage renal disease. Despite optimal management, DN is still a major contributor to morbidity and mortality of diabetic patients worldwide. The major pathological alterations in DN include excessive accumulation and deposition of extracellular matrix, leading to expansion of mesangial matrix, thickening of glomerular basement membrane and tubulointerstitial fibrosis. At the molecular level, accumulating evidence suggests that hyperglycemia or high glucose mediates renal injury in DN via multiple molecular mechanisms such as induction of oxidative stress, upregulation of renal transforming growth factor beta-1 expression, production of proinflammatory cytokines, activation of fibroblasts and renin angiotensin system, and depletion of adenosine triphosphate. Also worrying is the fact that existing therapies only retard the disease progression but do not prevent it. Therefore, there is urgent need to identify novel therapies to target additional disease mechanisms. Hydrogen sulfide (H2S), the third member of the gasotransmitter family, has recently been identified and demonstrated to possess important therapeutic characteristics that prevent the development and progression of DN in experimental animals by targeting several important molecular pathways, and therefore may represent an alternative or additional therapeutic approach for DN. This review discusses recent experimental findings on the molecular mechanisms underlying the therapeutic effects of H2S against the development and progression of DN and its clinical application in the future.
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Affiliation(s)
- George J Dugbartey
- Department of Medicine, Aab Cardiovascular Research Institute, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
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46
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Novel Role of Endogenous Catalase in Macrophage Polarization in Adipose Tissue. Mediators Inflamm 2016; 2016:8675905. [PMID: 27597806 PMCID: PMC5002490 DOI: 10.1155/2016/8675905] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/11/2016] [Accepted: 06/29/2016] [Indexed: 12/19/2022] Open
Abstract
Macrophages are important components of adipose tissue inflammation, which results in metabolic diseases such as insulin resistance. Notably, obesity induces a proinflammatory phenotypic switch in adipose tissue macrophages, and oxidative stress facilitates this switch. Thus, we examined the role of endogenous catalase, a key regulator of oxidative stress, in the activity of adipose tissue macrophages in obese mice. Catalase knockout (CKO) exacerbated insulin resistance, amplified oxidative stress, and accelerated macrophage infiltration into epididymal white adipose tissue in mice on normal or high-fat diet. Interestingly, catalase deficiency also enhanced classical macrophage activation (M1) and inflammation but suppressed alternative activation (M2) regardless of diet. Similarly, pharmacological inhibition of catalase activity using 3-aminotriazole induced the same phenotypic switch and inflammatory response in RAW264.7 macrophages. Finally, the same phenotypic switch and inflammatory responses were observed in primary bone marrow-derived macrophages from CKO mice. Taken together, the data indicate that endogenous catalase regulates the polarization of adipose tissue macrophages and thereby inhibits inflammation and insulin resistance.
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47
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Abstract
SIGNIFICANCE Peroxisomes are organelles present in most eukaryotic cells. The organs with the highest density of peroxisomes are the liver and kidneys. Peroxisomes possess more than fifty enzymes and fulfill a multitude of biological tasks. They actively participate in apoptosis, innate immunity, and inflammation. In recent years, a considerable amount of evidence has been collected to support the involvement of peroxisomes in the pathogenesis of kidney injury. RECENT ADVANCES The nature of the two most important peroxisomal tasks, beta-oxidation of fatty acids and hydrogen peroxide turnover, functionally relates peroxisomes to mitochondria. Further support for their communication and cooperation is furnished by the evidence that both organelles share the components of their division machinery. Until recently, the majority of studies on the molecular mechanisms of kidney injury focused primarily on mitochondria and neglected peroxisomes. CRITICAL ISSUES The aim of this concise review is to introduce the reader to the field of peroxisome biology and to provide an overview of the evidence about the contribution of peroxisomes to the development and progression of kidney injury. The topics of renal ischemia-reperfusion injury, endotoxin-induced kidney injury, diabetic nephropathy, and tubulointerstitial fibrosis, as well as the potential therapeutic implications of peroxisome activation, are addressed in this review. FUTURE DIRECTIONS Despite recent progress, further studies are needed to elucidate the molecular mechanisms induced by dysfunctional peroxisomes and the role of the dysregulated mitochondria-peroxisome axis in the pathogenesis of renal injury. Antioxid. Redox Signal. 25, 217-231.
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Affiliation(s)
- Radovan Vasko
- Department of Nephrology and Rheumatology, University Medical Center Göttingen , Göttingen, Germany
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48
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Chevalier RL. The proximal tubule is the primary target of injury and progression of kidney disease: role of the glomerulotubular junction. Am J Physiol Renal Physiol 2016; 311:F145-61. [PMID: 27194714 PMCID: PMC4967168 DOI: 10.1152/ajprenal.00164.2016] [Citation(s) in RCA: 266] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/03/2016] [Indexed: 12/16/2022] Open
Abstract
There is an alarming global increase in the incidence of end-stage kidney disease, for which early biomarkers and effective treatment options are lacking. Largely based on the histology of the end-stage kidney and on the model of unilateral ureteral obstruction, current investigation is focused on the pathogenesis of renal interstitial fibrosis as a central mechanism in the progression of chronic kidney disease (CKD). It is now recognized that cumulative episodes of acute kidney injury (AKI) can lead to CKD, and, conversely, CKD is a risk factor for AKI. Based on recent and historic studies, this review shifts attention from the glomerulus and interstitium to the proximal tubule as the primary sensor and effector in the progression of CKD as well as AKI. Packed with mitochondria and dependent on oxidative phosphorylation, the proximal tubule is particularly vulnerable to injury (obstructive, ischemic, hypoxic, oxidative, metabolic), resulting in cell death and ultimately in the formation of atubular glomeruli. Animal models of human glomerular and tubular disorders have provided evidence for a broad repertoire of morphological and functional responses of the proximal tubule, revealing processes of degeneration and repair that may lead to new therapeutic strategies. Most promising are studies that encompass the entire life cycle from fetus to senescence, recognizing epigenetic factors. The application of techniques in molecular characterization of tubule segments and the development of human kidney organoids may provide new insights into the mammalian kidney subjected to stress or injury, leading to biomarkers of early CKD and new therapies.
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Affiliation(s)
- Robert L Chevalier
- Department of Pediatrics, University of Virginia, Charlottesville, Virginia
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49
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JI ZHENZHONG, XU YANCHENG. Melatonin protects podocytes from angiotensin II-induced injury in an in vitro diabetic nephropathy model. Mol Med Rep 2016; 14:920-6. [DOI: 10.3892/mmr.2016.5313] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 05/06/2016] [Indexed: 11/06/2022] Open
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50
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Abstract
The longstanding focus in chronic kidney disease (CKD) research has been on the glomerulus, which is sensible because this is where glomerular filtration occurs, and a large proportion of progressive CKD is associated with significant glomerular pathology. However, it has been known for decades that tubular atrophy is also a hallmark of CKD and that it is superior to glomerular pathology as a predictor of glomerular filtration rate decline in CKD. Nevertheless, there are vastly fewer studies that investigate the causes of tubular atrophy, and fewer still that identify potential therapeutic targets. The purpose of this review is to discuss plausible mechanisms of tubular atrophy, including tubular epithelial cell apoptosis, cell senescence, peritubular capillary rarefaction and downstream tubule ischemia, oxidative stress, atubular glomeruli, epithelial-to-mesenchymal transition, interstitial inflammation, lipotoxicity and Na(+)/H(+) exchanger-1 inactivation. Once a a better understanding of tubular atrophy (and interstitial fibrosis) pathophysiology has been obtained, it might then be possible to consider tandem glomerular and tubular therapeutic strategies, in a manner similar to cancer chemotherapy regimens, which employ multiple drugs to simultaneously target different mechanistic pathways.
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