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Peritubular Capillary Rarefaction: An Underappreciated Regulator of CKD Progression. Int J Mol Sci 2020; 21:ijms21218255. [PMID: 33158122 PMCID: PMC7662781 DOI: 10.3390/ijms21218255] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 10/29/2020] [Indexed: 12/15/2022] Open
Abstract
Peritubular capillary (PTC) rarefaction is commonly detected in chronic kidney disease (CKD) such as hypertensive nephrosclerosis and diabetic nephropathy. Moreover, PTC rarefaction prominently correlates with impaired kidney function and predicts the future development of end-stage renal disease in patients with CKD. However, it is still underappreciated that PTC rarefaction is a pivotal regulator of CKD progression, primarily because the molecular mechanisms of PTC rarefaction have not been well-elucidated. In addition to the established mechanisms (reduced proangiogenic factors and increased anti-angiogenic factors), recent studies discovered significant contribution of the following elements to PTC loss: (1) prompt susceptibility of PTC to injury, (2) impaired proliferation of PTC, (3) apoptosis/senescence of PTC, and (4) pericyte detachment from PTC. Mainly based on the recent and novel findings in basic research and clinical study, this review describes the roles of the above-mentioned elements in PTC loss and focuses on the major factors regulating PTC angiogenesis, the assessment of PTC rarefaction and its surrogate markers, and an overview of the possible therapeutic agents to mitigate PTC rarefaction during CKD progression. PTC rarefaction is not only a prominent histological characteristic of CKD but also a central driving force of CKD progression.
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102
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Fang Y, Gong AY, Haller ST, Dworkin LD, Liu Z, Gong R. The ageing kidney: Molecular mechanisms and clinical implications. Ageing Res Rev 2020; 63:101151. [PMID: 32835891 PMCID: PMC7595250 DOI: 10.1016/j.arr.2020.101151] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 08/07/2020] [Accepted: 08/17/2020] [Indexed: 12/11/2022]
Abstract
As human life expectancy keeps increasing, ageing populations present a growing challenge for clinical practices. Human ageing is associated with molecular, structural, and functional changes in a variety of organ systems, including the kidney. During the ageing process, the kidney experiences progressive functional decline as well as macroscopic and microscopic histological alterations, which are accentuated by systemic comorbidities like hypertension and diabetes mellitus, or by preexisting or underlying kidney diseases. Although ageing per se does not cause kidney injury, physiologic changes associated with normal ageing processes are likely to impair the reparative capacity of the kidney and thus predispose older people to acute kidney disease, chronic kidney disease and other renal diseases. Mechanistically, cell senescence plays a key role in renal ageing, involving a number of cellular signaling mechanisms, many of which may be harnessed as international targets for slowing or even reversing kidney ageing. This review summarizes the clinical characteristics of renal ageing, highlights the latest progresses in deciphering the role of cell senescence in renal ageing, and envisages potential interventional strategies and novel therapeutic targets for preventing or improving renal ageing in the hope of maintaining long-term kidney health and function across the life course.
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Affiliation(s)
- Yudong Fang
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China; Division of Nephrology, University of Toledo College of Medicine, Toledo, Ohio, USA
| | - Athena Y Gong
- Division of Nephrology, University of Toledo College of Medicine, Toledo, Ohio, USA
| | - Steven T Haller
- Division of Cardiology, University of Toledo College of Medicine, Toledo, Ohio, USA
| | - Lance D Dworkin
- Department of Medicine, University of Toledo College of Medicine, Toledo, Ohio, USA
| | - Zhangsuo Liu
- Department of Nephrology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
| | - Rujun Gong
- Division of Nephrology, University of Toledo College of Medicine, Toledo, Ohio, USA; Department of Medicine, University of Toledo College of Medicine, Toledo, Ohio, USA; Department of Physiology and Pharmacology, University of Toledo College of Medicine, Toledo, Ohio, USA.
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103
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Wang Y, Eng DG, Kaverina NV, Loretz CJ, Koirala A, Akilesh S, Pippin JW, Shankland SJ. Global transcriptomic changes occur in aged mouse podocytes. Kidney Int 2020; 98:1160-1173. [PMID: 32592814 PMCID: PMC7606654 DOI: 10.1016/j.kint.2020.05.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/17/2020] [Accepted: 05/28/2020] [Indexed: 01/15/2023]
Abstract
Glomerular podocytes undergo structural and functional changes with advanced age, that increase susceptibility of aging kidneys to worse outcomes following superimposed glomerular diseases. To delineate transcriptional changes in podocytes in aged mice, RNA-seq was performed on isolated populations of reporter-labeled (tdTomato) podocytes from multiple young (two to three months) and advanced aged mice (22 to 24 months, equivalent to 70 plus year old humans). Of the 2,494 differentially expressed genes, 1,219 were higher and 1,275 were lower in aged podocytes. Pathway enrichment showed that major biological processes increased in aged podocytes included immune responses, non-coding RNA metabolism, gene silencing and MAP kinase signaling. Conversely, aged podocytes showed downregulation of developmental, morphogenesis and metabolic processes. Canonical podocyte marker gene expression decreased in aged podocytes, with increases in apoptotic and senescence genes providing a mechanism for the progressive loss of podocytes seen with aging. In addition, we revealed aberrations in the podocyte autocrine signaling network, identified the top transcription factors perturbed in aged podocytes, and uncovered candidate gene modulations that might promote healthy aging in podocytes. The transcriptional signature of aging is distinct from other kidney diseases. Thus, our study provides insights into biomarker discovery and molecular targeting of the aging process itself within podocytes.
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Affiliation(s)
- Yuliang Wang
- Paul G. Allen School of Computer Science and Engineering, University of Washington, Seattle, Washington, USA; Institute for Stem Cell & Regenerative Medicine, University of Washington, Seattle, Washington, USA
| | - Diana G Eng
- Division of Nephrology, University of Washington, Seattle, Washington, USA
| | - Natalya V Kaverina
- Division of Nephrology, University of Washington, Seattle, Washington, USA
| | - Carol J Loretz
- Division of Nephrology, University of Washington, Seattle, Washington, USA
| | - Abbal Koirala
- Division of Nephrology, University of Washington, Seattle, Washington, USA
| | - Shreeram Akilesh
- Department of Pathology, University of Washington, Seattle, Washington, USA
| | - Jeffrey W Pippin
- Division of Nephrology, University of Washington, Seattle, Washington, USA
| | - Stuart J Shankland
- Division of Nephrology, University of Washington, Seattle, Washington, USA.
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104
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Chen CC, Chang ZY, Tsai FJ, Chen SY. Resveratrol Pretreatment Ameliorates Concanavalin A-Induced Advanced Renal Glomerulosclerosis in Aged Mice through Upregulation of Sirtuin 1-Mediated Klotho Expression. Int J Mol Sci 2020; 21:ijms21186766. [PMID: 32942691 PMCID: PMC7554923 DOI: 10.3390/ijms21186766] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 12/15/2022] Open
Abstract
Aging kidneys are characterized by an increased vulnerability to glomerulosclerosis and a measurable decline in renal function. Evidence suggests that renal and systemic klotho and sirtuin 1 (SIRT1) deficiencies worsen kidney damage induced by exogenous stresses. The aim of this study was to explore whether resveratrol would attenuate concanavalin A (Con A)-induced renal oxidative stress and advanced glomerulosclerosis in aged mice. Aged male C57BL/6 mice were treated orally with resveratrol (30 mg/kg) seven times (12 h intervals) prior to the administration of a single tail-vein injection of Con A (20 mg/kg). The plasma and urinary levels of kidney damage markers were evaluated. The kidney histopathology, renal parameters, and oxidative stress levels were measured. Furthermore, klotho was downregulated in mouse kidney mesangial cells that were pretreated with 25 µM resveratrol followed by 20 µg/mL Con A. The urinary albumin/creatinine ratio, blood urea nitrogen, kidney mesangial matrix expansion, tubulointerstitial fibrosis, and renal levels of α-smooth muscle actin, transforming growth factor beta, fibronectin, procollagen III propeptide, and collagen type I significantly increased in Con A-treated aged mice. Aged mice kidneys also showed markedly increased levels of 8-hydroxydeoxyguanosine (8-OH-dG) and reactive oxygen species (ROS), with reduced superoxide dismutase activity and levels of glutathione, klotho, and SIRT1 after Con A challenge. Furthermore, in kidney mesangial cells, klotho silencing abolished the effects of resveratrol on the Con A-mediated elevation of the indices of oxidative stress and the expression of glomerulosclerosis-related factors. These findings suggest that resveratrol protects against Con A-induced advanced glomerulosclerosis in aged mice, ameliorating renal oxidative stress via the SIRT1-mediated klotho expression.
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Affiliation(s)
- Chin-Chang Chen
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung 204, Taiwan; (C.-C.C.); (Z.-Y.C.)
- Department of Anatomy, School of Medicine, China Medical University, Taichung 404, Taiwan
| | - Zi-Yu Chang
- Department of Traditional Chinese Medicine, Chang Gung Memorial Hospital, Keelung 204, Taiwan; (C.-C.C.); (Z.-Y.C.)
- Institute of Traditional Medicine, School of Medicine, National Yang-Ming University, Taipei 112, Taiwan
| | - Fuu-Jen Tsai
- School of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
- Genetics Center, Medical Research, China Medical University Hospital, Taichung 404, Taiwan
- Department of Medical Genetics, China Medical University Hospital, Taichung 404, Taiwan
| | - Shih-Yin Chen
- School of Chinese Medicine, China Medical University, Taichung 404, Taiwan;
- Genetics Center, Medical Research, China Medical University Hospital, Taichung 404, Taiwan
- Correspondence:
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105
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Wu X, Lin L, Cui J, Chen Y, Yang L, Wan J. Complement C3 deficiency ameliorates aging related changes in the kidney. Life Sci 2020; 260:118370. [PMID: 32882264 DOI: 10.1016/j.lfs.2020.118370] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/23/2020] [Accepted: 08/28/2020] [Indexed: 12/25/2022]
Abstract
AIMS Complement C3 (C3) has been shown to be involved in the aging process. However, the role of C3 in kidney aging has not been fully elucidated. This study aimed to investigate the effect of C3 on senescence related kidney disorders in mice. MATERIALS AND METHODS Two-, 8-, and 16-month-old C3-deficient male mice (KO) (n = 6) and age-, gender-, and strain- matched wild type (WT) C57BL/6 mice (n = 6) were selected to represent young, middle-aged and aging mice. Renal, blood and urine samples were collected. Hematoxylin-eosin (HE), Masson, and immunohistochemistry (IHC) staining as well as ELISA and Western blotting were used to explore the mechanisms involved in renal aging. KEY FINDINGS The level of C3 was upregulated during aging in WT mice. The glomerular sclerosis index and tubulointerstitial fibrosis index were increased significantly in WT mice during aging. Renal function was not significantly different between the young and aged groups. Compared with those in WT mice, the levels of inflammation and fibrosis were decreased, while the expression of CD31 was significantly increased in the KO group. SIGNIFICANCE Our data demonstrated that age-related changes in renal structure occur earlier than functional changes and that complement C3 is involved in aging-related kidney disorder.
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Affiliation(s)
- Xiaoting Wu
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Liyu Lin
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Jiong Cui
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yi Chen
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Liyan Yang
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Jianxin Wan
- Department of Nephrology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China.
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106
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Yousefizadeh S, Farkhondeh T, Samarghandian S. Age-Related Diazinon Toxicity Impact on Blood Glucose, Lipid Profile and Selected Biochemical Indices in Male Rats. Curr Aging Sci 2020; 12:49-54. [PMID: 31038084 PMCID: PMC6971895 DOI: 10.2174/1874609812666190416160918] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/24/2019] [Accepted: 04/05/2019] [Indexed: 12/20/2022]
Abstract
Background: Diabetes and its complications are age-related diseases. Low-grade inflammation plays the main role in the aging processes. Diazinon (DZN), an organophosphate pesticide, has been found to induce metabolic disturbances. Objective: The present study was designed to investigate the impact of DZN on age-related changes on inflammatory cells, blood glucose concentration, lipid profile, and liver and kidney function indices in adult and aged rats. Methods: Male rats (2 and 16 month old) were orally administrated with DZN (15 mg/kg) for 4 weeks. Then the blood was obtained for measuring inflammatory cells, lipid profile, glucose and serum biochemical indices such as liver enzymes, albumin, total protein, creatinine (Cr), urea, and uric acid in the serum of adult and aged male rats. Results: DZN increased the blood levels of glucose and the percentage of lymphocytes and also serum levels of TChol, TG, LDL-c, AST, ALT, ALP, LDH, Cr, urea, and uric acid in the adult and aged rats versus the aged matched control rats (p< 0.001). A marked reduction in HDL-c levels, total protein, albumin, and in the percentage of neutrophils were seen in the adult and aged animals exposed to DZN versus the aged matched control rats. DZN also increased the levels of LDL-c and ALT in the aged rats versus adult animals. Conclusion: The present study indicated that DZN can cause metabolic disturbance. However, the age-dependent effects of DZN on metabolic indices were not be confirmed by the present data.
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Affiliation(s)
- Shahnaz Yousefizadeh
- Department of Laboratory and Clinical Sciences, Faculty of Para-Veterinary, Ilam University, Ilam, Iran
| | - Tahereh Farkhondeh
- Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Saeed Samarghandian
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran
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107
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Zhou J, Chen A, Wang Z, Zhang J, Chen H, Zhang H, Wang R, Miao D, Jin J. Bmi-1 determines the stemness of renal stem or progenitor cells. Biochem Biophys Res Commun 2020; 529:1165-1172. [PMID: 32819581 DOI: 10.1016/j.bbrc.2020.06.140] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 06/26/2020] [Indexed: 12/24/2022]
Abstract
Renal stem or progenitor cells (RSCs), labeled with CD24 and CD133, play an important role during the repair of renal injury. Bmi-1 is a critical factor in regulating stemness of adult stem cells or progenitor cells. To investigate whether Bmi-1 determines the stemness of RSCs by inhibiting p16 and p53, and/or maintaining redox balance, RSCs were isolated, cultured and analyzed for stemness characterizations. In RSCs from Bmi-1-deficient (Bmi-1-/-) mice and wild type (WT) littermates, self-renewal, stemness, and expressions of molecules for regulating redox balance and cell cycle progression were compared. Self-renewal of RSCs from Bmi-1 and p16 double-knockout (Bmi-1-/-p16-/-), Bmi-1 and p53 double-knockout (Bmi-1-/-p53-/-) and N-acetylcysteine (NAC)-treated Bmi-1-/- mice were further analyzed for amelioration. Human renal proximal tubular epithelial cells (HK2) were also used for signaling analysis. Our results showed that third-passage RSCs from WT mice had good stemness; Bmi-1 deficiency led to the decreased stemness, and the increased apoptosis for RSCs; NAC treatment or p16/p53 deletion ameliorated the decreased self-renewal of RSCs in Bmi-1 deficiency mice by maintaining redox balance or inhibiting cell cycle arrest respectively; Oxidative stress (OS) could negatively feedback regulate the mRNA expressions of Bmi-1, p16 and p53. In conclusion, Bmi-1 determined the stemness of RSCs through maintaining redox balance and preventing cell cycle arrest. Thus, Bmi-1 signaling molecules would be novel therapeutic targets for maintaining RSCs and hampering the progression of kidney diseases to prevent renal failure.
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Affiliation(s)
- Jiawen Zhou
- Research Centre for Bone and Stem Cells, Department of Human Anatomy, Key Laboratory for Aging & Disease, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Ao Chen
- Research Centre for Bone and Stem Cells, Department of Human Anatomy, Key Laboratory for Aging & Disease, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Ziyang Wang
- Research Centre for Bone and Stem Cells, Department of Human Anatomy, Key Laboratory for Aging & Disease, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Jin'ge Zhang
- School of Nursing, Shanxi Medical University, Jinzhong, Shanxi, 030001, China
| | - Haiyun Chen
- Anti-aging Research Laboratory, Friendship Plastic Surgery Hospital, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Hengzhi Zhang
- Research Centre for Bone and Stem Cells, Department of Human Anatomy, Key Laboratory for Aging & Disease, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Rong Wang
- Research Centre for Bone and Stem Cells, Department of Human Anatomy, Key Laboratory for Aging & Disease, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Dengshun Miao
- Research Centre for Bone and Stem Cells, Department of Human Anatomy, Key Laboratory for Aging & Disease, Nanjing Medical University, Nanjing, Jiangsu, 211166, China
| | - Jianliang Jin
- Research Centre for Bone and Stem Cells, Department of Human Anatomy, Key Laboratory for Aging & Disease, Nanjing Medical University, Nanjing, Jiangsu, 211166, China.
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108
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Guo J, Zheng HJ, Zhang W, Lou W, Xia C, Han XT, Huang WJ, Zhang F, Wang Y, Liu WJ. Accelerated Kidney Aging in Diabetes Mellitus. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:1234059. [PMID: 32774664 PMCID: PMC7407029 DOI: 10.1155/2020/1234059] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/25/2020] [Accepted: 06/25/2020] [Indexed: 02/07/2023]
Abstract
With aging, the kidney undergoes inexorable and progressive changes in structural and functional performance. These aging-related alterations are more obvious and serious in diabetes mellitus (DM). Renal accelerated aging under DM conditions is associated with multiple stresses such as accumulation of advanced glycation end products (AGEs), hypertension, oxidative stress, and inflammation. The main hallmarks of cellular senescence in diabetic kidneys include cyclin-dependent kinase inhibitors, telomere shortening, and diabetic nephropathy-associated secretory phenotype. Lysosome-dependent autophagy and antiaging proteins Klotho and Sirt1 play a fundamental role in the accelerated aging of kidneys in DM, among which the autophagy-lysosome system is the convergent mechanism of the multiple antiaging pathways involved in renal aging under DM conditions. Metformin and the inhibitor of sodium-glucose cotransporter 2 are recommended due to their antiaging effects independent of antihyperglycemia, besides angiotensin-converting enzyme inhibitors/angiotensin receptor blockers. Additionally, diet intervention including low protein and low AGEs with antioxidants are suggested for patients with diabetic nephropathy (DN). However, their long-term benefits still need further study. Exploring the interactive relationships among antiaging protein Klotho, Sirt1, and autophagy-lysosome system may provide insight into better satisfying the urgent medical needs of elderly patients with aging-related DN.
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Affiliation(s)
- Jing Guo
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Hui Juan Zheng
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Wenting Zhang
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Wenjiao Lou
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Chenhui Xia
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Xue Ting Han
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Wei Jun Huang
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Fan Zhang
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Yaoxian Wang
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
| | - Wei Jing Liu
- Renal Research Institution; Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100700, China
- Institute of Nephrology, and Zhanjiang Key Laboratory of Prevention and Management of Chronic Kidney Disease, Guangdong Medical University, No. 57th South Renmin Road, Zhanjiang, Guangdong 524001, China
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109
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Baba M, Takatsuna H, Matsui N, Ohwada S. Mirogabalin in Japanese Patients with Renal Impairment and Pain Associated with Diabetic Peripheral Neuropathy or Post-Herpetic Neuralgia: A Phase III, Open-Label, 14-Week Study. J Pain Res 2020; 13:1811-1821. [PMID: 32765056 PMCID: PMC7381826 DOI: 10.2147/jpr.s255345] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 06/23/2020] [Indexed: 01/09/2023] Open
Abstract
Purpose Mirogabalin was recently approved in Japan for the treatment of peripheral neuropathic pain, based on data from clinical trials in diabetic peripheral neuropathic pain (DPNP) and post-herpetic neuralgia (PHN), common clinical conditions which cause intense distress for patients. We characterized the safety and tolerability of mirogabalin in Japanese patients with renal impairment. Patients and Methods This multicenter, open-label study (ClinicalTrials.gov identifier NCT02607280) enrolled renally impaired individuals aged ≥20 years diagnosed with DPNP or PHN, and with an average daily pain score (ADPS) of ≥4 over the 7 days prior to treatment initiation. Mirogabalin dosage was titrated for 2 weeks, followed by a fixed dose for 12 weeks according to degree of renal impairment: 7.5 mg twice daily for moderate impairment and 7.5 mg once daily for severe impairment. The primary endpoint was safety and tolerability of mirogabalin, evaluated via treatment-emergent adverse events (TEAEs). Secondary efficacy endpoints included change in ADPS from baseline to Week 14. Results Overall, 35 patients were enrolled (30 with moderate and 5 with severe renal impairment). Most TEAEs were mild or moderate in severity; the most commonly reported were nasopharyngitis (22.9%) and somnolence (11.4%). Only 4 patients (11.4%) discontinued treatment due to TEAEs. Mirogabalin significantly decreased ADPS from baseline in patients with renal impairment; least squares mean change from baseline at Week 14 was −1.9 (95% confidence interval: −2.8, −1.0). Conclusion Mirogabalin was well tolerated and significantly reduced pain levels when used to treat DPNP/PHN at a fixed dose of 7.5 mg once or twice daily in patients with renal impairment.
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Affiliation(s)
| | | | - Norimitsu Matsui
- Clinical Development Department, Daiichi Sankyo Co., Ltd., Tokyo, Japan
| | - Shoichi Ohwada
- Biostatistics and Data Management Department, Daiichi Sankyo Co., Ltd., Tokyo, Japan
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110
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Liu M, Qiao Z, Zhang Y, Zhan P, Yi F. Histone Deacetylases Take Center Stage on Regulation of Podocyte Function. KIDNEY DISEASES (BASEL, SWITZERLAND) 2020; 6:236-246. [PMID: 32903938 PMCID: PMC7445693 DOI: 10.1159/000507117] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 03/10/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Podocytes (highly specialized and terminally differentiated epithelial cells) are integral components of the glomerular filtration barrier that are vulnerable to a variety of injuries and, as a result, they undergo a series of changes ranging from hypertrophy to detachment and apoptosis. Podocyte injury is a major determinant in proteinuric kidney disease and identification of potential therapeutic targets for preventing podocyte injury has clinical importance. Although numerous studies have achieved dramatic advances in the understanding of podocyte biology and its relevance to renal injury, few effective and specific therapies are available. SUMMARY Epigenetic modifications have been proven to play important roles in the pathogenesis of kidney diseases. Among them, histone deacetylase (HDAC)-mediated epigenetic acetylation in the kidney has attracted much attention, which may play multiple roles in both kidney development and the pathogenesis of kidney disease. Recent studies have demonstrated that HDAC protect against podocyte injury by regulation of inflammation, apoptosis, autophagy, mitochondrial function, and insulin resistance. In this review, we summarize recent advances in the understanding of the functions and regulatory mechanisms of HDAC in podocytes and associated proteinuric kidney diseases. In addition, we provide evidence of the potential therapeutic effects of HDAC inhibitors for proteinuric kidney disease. KEY MESSAGES Pharmacological targeting of HDAC-mediated epigenetic processes may open new therapeutic avenues for chronic kidney disease.
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Affiliation(s)
| | | | | | | | - Fan Yi
- The Key Laboratory of Infection and Immunity of Shandong Province, Department of Pharmacology, School of Basic Medical Sciences, Shandong University, Jinan, China
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111
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Franzin R, Stasi A, Fiorentino M, Stallone G, Cantaluppi V, Gesualdo L, Castellano G. Inflammaging and Complement System: A Link Between Acute Kidney Injury and Chronic Graft Damage. Front Immunol 2020; 11:734. [PMID: 32457738 PMCID: PMC7221190 DOI: 10.3389/fimmu.2020.00734] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 03/31/2020] [Indexed: 12/13/2022] Open
Abstract
The aberrant activation of complement system in several kidney diseases suggests that this pillar of innate immunity has a critical role in the pathophysiology of renal damage of different etiologies. A growing body of experimental evidence indicates that complement activation contributes to the pathogenesis of acute kidney injury (AKI) such as delayed graft function (DGF) in transplant patients. AKI is characterized by the rapid loss of the kidney's excretory function and is a complex syndrome currently lacking a specific medical treatment to arrest or attenuate progression in chronic kidney disease (CKD). Recent evidence suggests that independently from the initial trigger (i.e., sepsis or ischemia/reperfusions injury), an episode of AKI is strongly associated with an increased risk of subsequent CKD. The AKI-to-CKD transition may involve a wide range of mechanisms including scar-forming myofibroblasts generated from different sources, microvascular rarefaction, mitochondrial dysfunction, or cell cycle arrest by the involvement of epigenetic, gene, and protein alterations leading to common final signaling pathways [i.e., transforming growth factor beta (TGF-β), p16 ink4a , Wnt/β-catenin pathway] involved in renal aging. Research in recent years has revealed that several stressors or complications such as rejection after renal transplantation can lead to accelerated renal aging with detrimental effects with the establishment of chronic proinflammatory cellular phenotypes within the kidney. Despite a greater understanding of these mechanisms, the role of complement system in the context of the AKI-to-CKD transition and renal inflammaging is still poorly explored. The purpose of this review is to summarize recent findings describing the role of complement in AKI-to-CKD transition. We will also address how and when complement inhibitors might be used to prevent AKI and CKD progression, therefore improving graft function.
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Affiliation(s)
- Rossana Franzin
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
- Department Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - Alessandra Stasi
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Marco Fiorentino
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Giovanni Stallone
- Nephrology, Dialysis and Transplantation Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
| | - Vincenzo Cantaluppi
- Department Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - Loreto Gesualdo
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
| | - Giuseppe Castellano
- Nephrology, Dialysis and Transplantation Unit, Department of Emergency and Organ Transplantation, University of Bari Aldo Moro, Bari, Italy
- Nephrology, Dialysis and Transplantation Unit, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy
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112
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El-Horany HES, Gaballah HH, Helal DS. Berberine ameliorates renal injury in a rat model of D-galactose-induced aging through a PTEN/Akt-dependent mechanism. Arch Physiol Biochem 2020; 126:157-165. [PMID: 30145915 DOI: 10.1080/13813455.2018.1499117] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This study aimed to investigate the protective effects of berberine (BBR) against D-galactose (D-gal)-induced renal aging in rats, pointing to its ability to modulate phosphatase and tensin homolog deleted on chromosome ten (PTEN)/Akt signalling, and to attenuate oxidative stress, inflammation and apoptosis. Renal aging was induced by subcutaneous injection of D-gal for six consecutive weeks along with simultaneous oral administration of BBR and compared to control rats and rats received individual doses of either drug. BBR treatment significantly reduced the serum levels of urea and creatinine, retrieved the alterations in kidney histopathology, and restored redox balance evidenced by alleviations of the level of malondialdehyde, 8-hydroxy-2'-deoxyguanosine and activating heme oxygenase-1 enzyme. Moreover, it markedly reduced the serum levels of pro-inflammatory mediators, along with down-regulation of PTEN expression, enhanced Akt activity, as well as significantly higher immunostaining of the anti-apoptotic marker (Bcl-2). These findings hold a great promise for the use of BBR as a protecting agent against renal aging.
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Affiliation(s)
| | | | - Duaa Samir Helal
- Faculty of Medicine, Department of Histopathology,Tanta University, Tanta, Egypt
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113
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Mogi M. Effect of renin-angiotensin system on senescence. Geriatr Gerontol Int 2020; 20:520-525. [PMID: 32346971 DOI: 10.1111/ggi.13927] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 02/24/2020] [Accepted: 03/04/2020] [Indexed: 12/11/2022]
Abstract
The renin-angiotensin system (RAS) plays crucial roles in the control of blood pressure and sodium homeostasis. Moreover, RAS also acts as a key player in cell and organ senescence, mainly by activation of the classical axis of angiotensin (Ang) converting enzyme (ACE)/Ang II/Ang II type 1 receptor via overproduction of reactive oxygen species. Overactivation of the classical RAS axis induces organ dysfunction in the vasculature, brain, kidney and skeletal muscle, resulting in atherosclerosis, stroke, chronic kidney disease and sarcopenia. Moreover, RAS has been shown to regulate lifespan, using gene-modification models. Recently, mice lacking the Ang II type 1 receptor were shown to exhibit an increase in lifespan compared with control mice. Here, the effect of RAS on age-related tissue dysfunction in several organs is reviewed, including not only the classical axis but also protective functions of RAS such as the ACE2/Ang (1-7)/Mas axis. Geriatr Gerontol Int 2020; ••: ••-••.
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Affiliation(s)
- Masaki Mogi
- Department of Pharmacology, Ehime University Graduate School of Medicine, Ehime, Japan
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114
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Park WY, Kim JH, Ko EJ, Min JW, Ban TH, Yoon HE, Kim YS, Jin K, Yang CW, Han S, Chung BH. Impact of Kidney Donor Profile Index Scores on Post-Transplant Clinical Outcomes Between Elderly and Young Recipients, A Multicenter Cohort Study. Sci Rep 2020; 10:7009. [PMID: 32332846 PMCID: PMC7181596 DOI: 10.1038/s41598-020-64055-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 04/02/2020] [Indexed: 12/17/2022] Open
Abstract
We investigated if clinical outcomes after kidney transplantation (KT) from deceased donors (DDs) with high Kidney Donor Profile Index (KDPI) can be different according to the age of KT recipients (KTRs). Six-hundred fifty-seven KTRs from 526 DDs were included from four transplant centers. We divided KTRs into elderly-KTR and young-KTR groups based on age 60 and each group was subdivided into high- or low-KDPI subgroup based on KDPI score of 65%. We compared short-term and long-term clinical outcomes among those four subgroups (low KDPI-young KTR, low KDPI-elderly-KTR, high KDPI-young-KTR, high KDPI-elderly-KTR). In short-term outcomes including acute rejection, BK virus and CMV infection, there was no significant difference among the four subgroups. In the long-term outcomes, the development of cardiovascular disease was higher in the high KDPI-elderly-KTR group than the other groups. In comparison of allograft survival rate, the high KDPI-young KTR subgroup showed highest risk for allograft failure and there was significant interaction between high-KDPI donors and young-KTR on allograft survival rate (P = 0.002). However, there was no significant difference in comparison of the patient survival rate. In conclusion, clinical impact of high-KDPI in DDs on post-transplant allograft survival may be less significant in elderly-KTR than in young-KTR.
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Affiliation(s)
- Woo Yeong Park
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea.,Keimyung University Kidney Institute, Daegu, Republic of Korea
| | - Jeong Ho Kim
- Division of Nephrology, Department of Internal Medicine, Daejeon St. Mary's hospital, College of Medicine, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Eun Jung Ko
- Transplant research center, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Ji-Won Min
- Transplant research center, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Nephrology, Department of Internal Medicine, Bucheon St. Mary's hospital, College of Medicine, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Tae Hyun Ban
- Transplant research center, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Nephrology, Department of Internal Medicine, Eunpyeong St. Mary's hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hye-Eun Yoon
- Transplant research center, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Nephrology, Department of Internal Medicine, Incheon St. Mary's hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Young Soo Kim
- Transplant research center, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Nephrology, Department of Internal Medicine, Uijeongbu St. Mary's hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Republic of Korea
| | - Kyubok Jin
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea.,Keimyung University Kidney Institute, Daegu, Republic of Korea
| | - Chul Woo Yang
- Transplant research center, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Seungyeup Han
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea. .,Keimyung University Kidney Institute, Daegu, Republic of Korea.
| | - Byung Ha Chung
- Transplant research center, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. .,Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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115
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Jia C, Ke-Hong C, Fei X, Huan-Zi D, Jie Y, Li-Ming W, Xiao-Yue W, Jian-Guo Z, Ya-Ni H. Decoy receptor 2 mediation of the senescent phenotype of tubular cells by interacting with peroxiredoxin 1 presents a novel mechanism of renal fibrosis in diabetic nephropathy. Kidney Int 2020; 98:645-662. [PMID: 32739204 DOI: 10.1016/j.kint.2020.03.026] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 02/20/2020] [Accepted: 03/05/2020] [Indexed: 12/14/2022]
Abstract
Premature senescence of renal tubular epithelial cell (RTEC), which is involved in kidney fibrosis, is a key event in the progression of diabetic nephropathy. However, the underlying mechanism remains unclear. Here we investigated the role and mechanism of decoy receptor 2 (DcR2) in kidney fibrosis and the senescent phenotype of RTEC. DcR2 was specifically expressed in senescent RTEC and associated with kidney fibrosis in patients with diabetic nephropathy and mice with streptozotocin-induced with diabetic nephropathy. Knockdown of DcR2 decreased the expression of α-smooth muscle actin, collagen I, fibronectin and serum creatinine levels in streptozotocin-induced mice. DcR2 knockdown also inhibited the expression of senescent markers p16, p21, senescence-associated beta-galactosidase and senescence-associated heterochromatic foci and promoted the secretion of a senescence-associated secretory phenotype including IL-6, TGF-β1, and matrix metalloproteinase 2 in vitro and in vivo. However, DcR2 overexpression showed the opposite effects. Quantitative proteomics and validation studies revealed that DcR2 interacted with peroxiredoxin 1 (PRDX1), which regulated the cell cycle and senescence. Knockdown of PRDX1 upregulated p16 and cyclin D1 while downregulating cyclin-dependent kinase 6 expression in vitro, resulting in RTEC senescence. Furthermore, PRDX1 knockdown promoted DcR2-induced p16, cyclin D1, IL-6, and TGF-β1 expression, whereas PRDX1 overexpression led to the opposite results. Subsequently, DcR2 regulated PRDX1 phosphorylation, which could be inhibited by the specific tyrosine kinase inhibitor genistein. Thus, DcR2 mediated the senescent phenotype of RTEC and kidney fibrosis by interacting with PRDX1. Hence, DcR2 may act as a potential therapeutic target for the amelioration of diabetic nephropathy progression.
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Affiliation(s)
- Chen Jia
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Chen Ke-Hong
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Xiao Fei
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Dai Huan-Zi
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Yang Jie
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Wang Li-Ming
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Wang Xiao-Yue
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - Zhang Jian-Guo
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China
| | - He Ya-Ni
- Department of Nephrology, Daping Hospital, Army Medical University, Chongqing, China.
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116
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Neuzillet Y, Albrand G, Caillet P, Paillaud E, Mongiat-Artus P. [Specificity of the management of metastatic renal cancer in the older patient]. Prog Urol 2020; 29:874-895. [PMID: 31771770 DOI: 10.1016/j.purol.2019.08.272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 08/19/2019] [Indexed: 01/27/2023]
Abstract
AIM To define the necessary arrangements of medical treatment with anti-angiogenics, mTOR inhibitor or systemic immunotherapies in the management of metastatic renal cell carcinoma in elderly patients. METHOD Bibliographical search was performed from the Medline bibliographic database (NLM Pubmed tool) and Embase focused on: metastatic renal cell carcinoma, elderly, treatment. RESULTS The selection criteria for the medical treatment of metastatic renal cell carcinoma in elderly patients are the IMDC score, necessarily complemented by performance status, the tolerability profile of treatments, more frequent drug interactions, treatment adherence, management capacity of side effects, and patient preference. Each of these criteria is detailed in critical ways. CONCLUSION The efficacy and tolerability of medical treatments for metastatic renal cancer have not been reported as different depending on age. No dosage adjustment is recommended in principle. However, prevention and early treatment of side effects of treatment should be strengthened in elderly patients.
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Affiliation(s)
- Y Neuzillet
- Service d'urologie et de transplantation rénale, hôpital Foch, université de Versailles - Saint-Quentin-en-Yvelines, 40, rue Worth, 92150 Suresnes, France.
| | - G Albrand
- Service UCOG-IR, pavillon 1C Louis-Lortet, hospices civils de Lyon, centre hôpitalier Lyon Sud, 165, chemin du Grand-Revoyet, 69495 Pierre-Bénite, France
| | - P Caillet
- Service de gériatrie, unité d'oncogériatrie, hôpital européen Georges-Pompidou, université de Paris-Descartes, 20, rue Leblanc, 75908 Paris cedex 15, France
| | - E Paillaud
- Service de gériatrie, unité d'oncogériatrie, hôpital européen Georges-Pompidou, université de Paris-Descartes, 20, rue Leblanc, 75908 Paris cedex 15, France
| | - P Mongiat-Artus
- Inserm UMR, S1165, service d'urologie, unité de chirurgie et d'anesthésie ambulatoires, hôpital Saint-Louis, université de Paris-7-Denis-Diderot, 1, avenue Claude-Vellefaux, 75010 Paris, France
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117
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Sen P, Helmke A, Liao CM, Sörensen-Zender I, Rong S, Bräsen JH, Melk A, Haller H, von Vietinghoff S, Schmitt R. SerpinB2 Regulates Immune Response in Kidney Injury and Aging. J Am Soc Nephrol 2020; 31:983-995. [PMID: 32209589 DOI: 10.1681/asn.2019101085] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 02/09/2020] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Expression of SerpinB2, a regulator of inflammatory processes, has been described in the context of macrophage activation and cellular senescence. Given that mechanisms for these processes interact and can shape kidney disease, it seems plausible that SerpinB2 might play a role in renal aging, injury, and repair. METHODS We subjected SerpinB2 knockout mice to ischemia-reperfusion injury or unilateral ureteral obstruction. We performed phagocyte depletion to study SerpinB2's role beyond the effects of macrophages and transplanted bone marrow from knockout mice to wild-type mice and vice versa to dissect cell type-dependent effects. Primary tubular cells and macrophages from SerpinB2 knockout and wild-type mice were used for functional studies and transcriptional profiling. RESULTS Cultured senescent tubular cells, kidneys of aged mice, and renal stress models exhibited upregulation of SerpinB2 expression. Functionally, lack of SerpinB2 in aged knockout mice had no effect on the magnitude of senescence markers but associated with enhanced kidney damage and fibrosis. In stress models, inflammatory cell infiltration was initially lower in knockout mice but later increased, leading to an accumulation of significantly more macrophages. SerpinB2 knockout tubular cells showed significantly reduced expression of the chemokine CCL2. Macrophages from knockout mice exhibited reduced phagocytosis and enhanced migration. Macrophage depletion and bone marrow transplantation experiments validated the functional relevance of these cell type-specific functions of SerpinB2. CONCLUSIONS SerpinB2 influences tubule-macrophage crosstalk by supporting tubular CCL2 expression and regulating macrophage phagocytosis and migration. In mice, SerpinB2 expression seems to be needed for coordination and timely resolution of inflammation, successful repair, and kidney homeostasis during aging. Implications of SerpinB2 in human kidney disease deserve further exploration.
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Affiliation(s)
- Payel Sen
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Alexandra Helmke
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Chieh Ming Liao
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Inga Sörensen-Zender
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | - Song Rong
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | | | - Anette Melk
- Department of Pediatric Nephrology and Gastroenterology, Medical School Hannover, Hannover, Germany
| | - Hermann Haller
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
| | | | - Roland Schmitt
- Department of Nephrology and Hypertension, Medical School Hannover, Hannover, Germany
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118
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Goligorsky MS. Chronic Kidney Disease: A Vicarious Relation to Premature Cell Senescence. THE AMERICAN JOURNAL OF PATHOLOGY 2020; 190:1164-1171. [PMID: 32194054 DOI: 10.1016/j.ajpath.2020.01.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 01/25/2020] [Accepted: 01/31/2020] [Indexed: 12/11/2022]
Abstract
Chronic kidney disease (CKD), commonly fostering nonrenal complications, themselves more life threatening than renal pathology, remains enigmatic. Despite more than a century of intense research, therapeutic options to halt or reverse renal disease are rather limited. Recently, similarity between manifestations of progressive CKD and aging kidney has attracted investigative attention that revealed senescent cells and secreting proinflammatory and profibrotic mediators in all renal compartments, even at young age, in patients with kidney maladies. The overlapping features of these categories have been noticed previously and are briefly summarized herein. I propose two hypothetical scenarios for interactive association of kidney diseases and cell senescence, both culminating in progressive deterioration of renal function. Persistence of senescent cells is considered as a critical contributor to this association; and the mechanisms explaining persistence, such as activation of cell cycle regulators, anti-apoptotic stimuli, metabolic aberrations, and their interactions, are discussed. The mutual encroachment of underlying kidney disease and cell senescence bring about the conclusion that both entities merge along the natural history of the disease. This putative interpretation of vicarious relation between cell senescence and CKD may expand the arsenal of pharmacotherapy to include the judicious use of senotherapeutics in the management of renal disease.
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Affiliation(s)
- Michael S Goligorsky
- Renal Research Institute, and the Departments of Medicine, Pharmacology, and Physiology, New York Medical College at Touro University, Valhalla, New York.
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119
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Targeting angiogenesis and lymphangiogenesis in kidney disease. Nat Rev Nephrol 2020; 16:289-303. [PMID: 32144398 DOI: 10.1038/s41581-020-0260-2] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2020] [Indexed: 12/17/2022]
Abstract
The kidney is permeated by a highly complex vascular system with glomerular and peritubular capillary networks that are essential for maintaining the normal functions of glomerular and tubular epithelial cells. The integrity of the renal vascular network depends on a balance of proangiogenic and antiangiogenic factors, and disruption of this balance has been identified in various kidney diseases. Decreased levels of the predominant proangiogenic factor, vascular endothelial growth factor A (VEGFA), can result in glomerular microangiopathy and contribute to the onset of preeclampsia, whereas upregulation of VEGFA has roles in diabetic kidney disease (DKD) and polycystic kidney disease (PKD). Other factors that regulate angiogenesis, such as angiopoietin 1 and vasohibin 1, have been shown to be protective in animal models of DKD and renal fibrosis. The renal lymphatic system is important for fluid homeostasis in the kidney, as well as the transport of immune cells and antigens. Experimental studies suggest that the lymphangiogenic factor VEGFC might have protective effects in PKD, DKD and renal fibrosis. Understanding the physiological and pathological roles of factors that regulate angiogenesis and lymphangiogenesis in the kidney has led to the development of novel therapeutic strategies for kidney diseases.
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120
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Park WY, Kim JH, Ko EJ, Min JW, Ban TH, Yoon HE, Kim YS, Jin K, Han S, Yang CW, Chung BH. Impact of acute kidney injury in elderly versus young deceased donors on post-transplant outcomes: A multicenter cohort study. Sci Rep 2020; 10:3727. [PMID: 32111949 PMCID: PMC7048728 DOI: 10.1038/s41598-020-60726-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 02/10/2020] [Indexed: 12/29/2022] Open
Abstract
We investigated the impact of acute kidney injury (AKI) in elderly deceased-donors (DDs) vs. AKI in young DDs on post-transplant clinical outcomes. A total of 709 kidney transplant recipients (KTRs) from 602 DDs at four transplant centers were enrolled. KTRs were divided into young-DDKT and elderly-DDKT groups according to the age of DD of 60 years. Both groups were subdivided into non-AKI-KT and AKI-KT subgroups according to AKI in DDs. We investigated short-term and long-term clinical outcomes of non-AKI-DDKT and AKI-DDKT subgroups within young-DDKT and elderly-DDKT groups. The incidence of DGF in the AKI-DDKT subgroup was higher and the allograft function within 12 months after KT in the AKI-DDKT subgroup was lower than those in the non-AKI-DDKT subgroup in both young-DDKT and elderly-DDKT groups. Death-censored allograft survival rate was significantly lower in the AKI-elderly-DDKT subgroup than that in the non-AKI-elderly-DDKT subgroup, but it did not differ between AKI-young-DDKT and non-AKI-young-DDKT subgroup. In multivariable analysis, AKI-elderly-DDKT was an independent risk factor for allograft failure (hazard ratio: 2.648, 95% CI: 1.170-5.994, p = 0.019) and a significant interaction between AKI and old age in DDs on allograft failure was observed (p = 0.001). AKI in elderly DDs, but not in young DDs, can significantly affect long-term allograft outcomes of KTRs.
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Affiliation(s)
- Woo Yeong Park
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
- Keimyung University Kidney Institute, Daegu, Republic of Korea
| | - Jeong Ho Kim
- Division of Nephrology, Department of Internal Medicine, Daejeon St. Mary's hospital, College of Medicine, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Eun Jung Ko
- Transplant research center, Seoul, Republic of Korea
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Ji-Won Min
- Transplant research center, Seoul, Republic of Korea
- Division of Nephrology, Department of Internal Medicine, Bucheon St. Mary's hospital, College of Medicine, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Tae Hyun Ban
- Transplant research center, Seoul, Republic of Korea
- Division of Nephrology, Department of Internal Medicine, Eunpyeong St. Mary's hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hye-Eun Yoon
- Transplant research center, Seoul, Republic of Korea
- Division of Nephrology, Department of Internal Medicine, Incheon St. Mary's hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Young Soo Kim
- Transplant research center, Seoul, Republic of Korea
- Division of Nephrology, Department of Internal Medicine, Uijeongbu St. Mary's hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Republic of Korea
| | - Kyubok Jin
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
- Keimyung University Kidney Institute, Daegu, Republic of Korea
| | - Seungyeup Han
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
- Keimyung University Kidney Institute, Daegu, Republic of Korea
| | - Chul Woo Yang
- Transplant research center, Seoul, Republic of Korea
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Byung Ha Chung
- Transplant research center, Seoul, Republic of Korea.
- Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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121
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Rodriguez S, Little HC, Daneshpajouhnejad P, Shepard BD, Tan SY, Wolfe A, Cheema MU, Jandu S, Woodward OM, Talbot CC, Berkowitz DE, Rosenberg AZ, Pluznick JL, Wong GW. Late-onset renal hypertrophy and dysfunction in mice lacking CTRP1. FASEB J 2020; 34:2657-2676. [PMID: 31908037 PMCID: PMC7739198 DOI: 10.1096/fj.201900558rr] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 12/19/2022]
Abstract
Local and systemic factors that influence renal structure and function in aging are not well understood. The secretory protein C1q/TNF-related protein 1 (CTRP1) regulates systemic metabolism and cardiovascular function. We provide evidence here that CTRP1 also modulates renal physiology in an age- and sex-dependent manner. In mice lacking CTRP1, we observed significantly increased kidney weight and glomerular hypertrophy in aged male but not female or young mice. Although glomerular filtration rate, plasma renin and aldosterone levels, and renal response to water restriction did not differ between genotypes, CTRP1-deficient male mice had elevated blood pressure. Echocardiogram and pulse wave velocity measurements indicated normal heart function and vascular stiffness in CTRP1-deficient animals, and increased blood pressure was not due to greater salt retention. Paradoxically, CTRP1-deficient mice had elevated urinary sodium and potassium excretion, partially resulting from reduced expression of genes involved in renal sodium and potassium reabsorption. Despite renal hypertrophy, markers of inflammation, fibrosis, and oxidative stress were reduced in CTRP1-deficient mice. RNA sequencing revealed alterations and enrichments of genes in metabolic processes in CTRP1-deficient animals. These results highlight novel contributions of CTRP1 to aging-associated changes in renal physiology.
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Affiliation(s)
- Susana Rodriguez
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Center for Metabolism and Obesity Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Hannah C. Little
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Center for Metabolism and Obesity Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | - Blythe D. Shepard
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Stefanie Y. Tan
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Center for Metabolism and Obesity Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Andrew Wolfe
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Muhammad Umar Cheema
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Sandeep Jandu
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Owen M. Woodward
- Department of Physiology, University of Maryland School of Medicine, Baltimore, Maryland
| | - C. Conover Talbot
- Institute for Basic Biomedical Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Dan E. Berkowitz
- Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Avi Z. Rosenberg
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Kidney Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Jennifer L. Pluznick
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - G. William Wong
- Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, Maryland
- Center for Metabolism and Obesity Research, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Verzola D, Saio M, Picciotto D, Viazzi F, Russo E, Cipriani L, Carta A, Costigliolo F, Gaggero G, Salvidio G, Esposito P, Garibotto G, Poggi L. Cellular Senescence Is Associated with Faster Progression of Focal Segmental Glomerulosclerosis. Am J Nephrol 2020; 51:950-958. [PMID: 33440379 DOI: 10.1159/000511560] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 09/12/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND A current, albeit unproven, hypothesis is that an acceleration of cellular senescence is involved in impaired renal repair and progression of glomerular diseases. Focal segmental glomerulosclerosis (FSGS) is a glomerular disease with a substantial risk for progression to ESRD. However, if and to what extent cell senescence predicts a negative outcome in FSGS is still unknown. METHODS The hypothesis that cell senescence represents a proximate mechanism by which the kidney is damaged in FSGS (NOS phenotype) was investigated in 26 consecutive kidney biopsies from adult FSGS cases (eGFR 72 ± 4 mL/min, proteinuria 2.3 ± 0.6 g/day) who were incident for 2 years in a Northern Italian nephrology center and had a 6-year clinical follow-up. RESULTS Cell senescence (p16INK4A, SA-β-galactosidase [SA-β-Gal]) was upregulated by ∼3- to 4-fold in both glomerular and tubular cells in kidney biopsies of FSGS as compared to age-matched controls (p < 0.05-0.01). Tubular SA-β-Gal correlated with proteinuria and glomerulosclerosis, while only as a trend, tubular p16INK4A was directly associated with interstitial fibrosis. At univariate analysis, basal eGFR, proteinuria, and tubular expression of SA-β-Gal and p16INK4A were significantly directly related to the annual loss of eGFR. No correlation was observed between glomerular p16INK4A and eGFR loss. However, at multivariate analysis, eGFR, proteinuria, and tubular p16INK4A, but not SA-β-Gal, contributed significantly to the prediction of eGFR loss. CONCLUSIONS The results indicate that an elevated cell senescence rate, expressed by an upregulation of p16INK4A in tubules at the time of initial biopsy, represents an independent predictor of progression to ESRD in adult patients with FSGS.
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Affiliation(s)
- Daniela Verzola
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Michela Saio
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Daniela Picciotto
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Francesca Viazzi
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Elisa Russo
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Leda Cipriani
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Annalisa Carta
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Francesca Costigliolo
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Gabriele Gaggero
- Division of Pathology, IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Gennaro Salvidio
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Pasquale Esposito
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
| | - Giacomo Garibotto
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy,
| | - Laura Poggi
- Division of Nephrology, Dialysis and Transplantation, Department of Internal Medicine and IRCCS Ospedale Policlinico San Martino, University of Genova, Genova, Italy
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123
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Islet Function Changes Among the Elderly Population. Arch Med Res 2019; 50:468-475. [DOI: 10.1016/j.arcmed.2019.10.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 09/27/2019] [Accepted: 10/29/2019] [Indexed: 12/22/2022]
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124
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Zhang L, Zhou F, Yu X, Zhu Y, Zhou Y, Liu J, Liu Y, Ma Q, Zhang Y, Wang W, Chen N. C/EBPα deficiency in podocytes aggravates podocyte senescence and kidney injury in aging mice. Cell Death Dis 2019; 10:684. [PMID: 31527620 PMCID: PMC6746733 DOI: 10.1038/s41419-019-1933-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/14/2019] [Accepted: 08/26/2019] [Indexed: 11/29/2022]
Abstract
Kidney aging leads to an increased incidence of end-stage renal disease (ESRD) in the elderly, and aging is a complex biological process controlled by signaling pathways and transcription factors. Podocyte senescence plays a central role in injury resulting from kidney aging. Here, we demonstrated the critical role of C/EBPα in podocyte senescence and kidney aging by generating a genetically modified mouse model of chronological aging in which C/EBPα was selectively deleted in podocytes and by overexpressing C/EBPα in cultured podocytes, in which premature senescence was induced by treatment with adriamycin. Moreover, we illuminated the mechanisms by which podocyte senescence causes tubular impairment by stimulating HK-2 cells with bovine serum albumin (BSA) and chloroquine. Our findings suggest that C/EBPα knockout in podocytes aggravates podocyte senescence through the AMPK/mTOR pathway, leading to glomerulosclerosis, and that subsequent albuminuria exacerbates the epithelial-mesenchymal transdifferentiation of senescent tubular cells by suppressing autophagy. These observations highlight the importance of C/EBPα as a new potential target in kidney aging.
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Affiliation(s)
- Liwen Zhang
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Fangfang Zhou
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Xialian Yu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Yufei Zhu
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, P.R. China
| | - Ying Zhou
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Jian Liu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Yunzi Liu
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
| | - Qingyang Ma
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, P.R. China
| | - Yuchao Zhang
- The Key Laboratory of Stem Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031, Shanghai, P.R. China
| | - Weiming Wang
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China.
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China.
| | - Nan Chen
- Department of Nephrology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
- Institute of Nephrology, Shanghai Jiao Tong University School of Medicine, 200025, Shanghai, P.R. China
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125
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Abstract
Immunosenescence involves a series of ageing-induced alterations in the immune system and is characterized by two opposing hallmarks: defective immune responses and increased systemic inflammation. The immune system is modulated by intrinsic and extrinsic factors and undergoes profound changes in response to the ageing process. Immune responses are therefore highly age-dependent. Emerging data show that immunosenescence underlies common mechanisms responsible for several age-related diseases and is a plastic state that can be modified and accelerated by non-heritable environmental factors and pharmacological intervention. In the kidney, resident macrophages and fibroblasts are continuously exposed to components of the external environment, and the effects of cellular reprogramming induced by local immune responses, which accumulate with age, might have a role in the increased susceptibility to kidney disease among elderly individuals. Additionally, because chronic kidney disease, especially end-stage renal disease, is often accompanied by immunosenescence, which affects these patients independently of age, and many kidney diseases are strongly age-associated, treatment approaches that target immunosenescence might be particularly clinically relevant.
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126
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Nath KA, Garovic VD, Grande JP, Croatt AJ, Ackerman AW, Farrugia G, Katusic ZS, Belcher JD, Vercellotti GM. Heme oxygenase-2 protects against ischemic acute kidney injury: influence of age and sex. Am J Physiol Renal Physiol 2019; 317:F695-F704. [PMID: 31215802 PMCID: PMC6842883 DOI: 10.1152/ajprenal.00085.2019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 06/13/2019] [Accepted: 06/17/2019] [Indexed: 01/01/2023] Open
Abstract
Heme oxygenase (HO) activity is exhibited by inducible (HO-1) and constitutive (HO-2) proteins. HO-1 protects against ischemic and nephrotoxic acute kidney injury (AKI). We have previously demonstrated that HO-2 protects against heme protein-induced AKI. The present study examined whether HO-2 is protective in ischemic AKI. Renal ischemia was imposed on young and aged HO-2+/+ and HO-2-/- mice. On days 1 and 2 after renal ischemia, there were no significant differences in renal function between young male HO-2+/+ and HO-2-/- mice, between young female HO-2+/+ and HO-2-/- mice, or between aged female HO-2+/+ and HO-2-/- mice. However, in aged male mice, HO-2 deficiency worsened renal function on days 1 and 2 after ischemic AKI, and, on day 2 after ischemia, such deficiency augmented upregulation of injury-related genes and worsened histological injury. Renal HO activity was markedly decreased in unstressed aged male HO-2-/- mice and remained so after ischemia, despite exaggerated HO-1 induction in HO-2-/- mice after ischemia. Such exacerbation of deficiency of HO-2 protein and HO activity may reflect phosphorylated STAT3, as activation of this proinflammatory transcription factor was accentuated early after ischemia in aged male HO-2-/- mice. This exacerbation may not reflect impaired induction of nephroprotectant genes, since the induction of HO-1, sirtuin 1, and β-catenin was accentuated in aged male HO-2-/- mice after ischemia. We conclude that aged male mice are hypersensitive to ischemic AKI and that HO-2 mitigates such sensitivity. We speculate that this protective effect of HO-2 may be mediated, at least in part, by suppression of phosphorylated STAT3-dependent signaling.
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Affiliation(s)
- Karl A Nath
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Vesna D Garovic
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | | | - Anthony J Croatt
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Allan W Ackerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Gianrico Farrugia
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | | | - John D Belcher
- Division of Hematology, Oncology, and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Gregory M Vercellotti
- Division of Hematology, Oncology, and Transplantation, University of Minnesota, Minneapolis, Minnesota
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127
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Vinel C, Schanstra JP, Boizard F, Péreira O, Auriau J, Dortignac A, Breuil B, Feuillet G, Nkuipou-Kenfack E, Zürbig P, Valet P, Bascands JL, Dray C, Denis C. Apelin affects the mouse aging urinary peptidome with minimal effects on kidney. Sci Rep 2019; 9:10647. [PMID: 31337837 PMCID: PMC6650410 DOI: 10.1038/s41598-019-47109-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 07/09/2019] [Indexed: 12/27/2022] Open
Abstract
Kidney function is altered by age together with a declined filtration capacity of 5–10% per decade after 35 years. Renal aging shares many characteristics with chronic kidney disease. Plasma levels of the bioactive peptide apelin also decline with age and apelin has been shown to be protective in chronic kidney disease. Therefore we evaluated whether apelin could also improve aging-induced renal lesions and function in mice. Since urine is for the major part composed of proteins and peptides originating from the kidney, we first studied apelin-induced changes, in the aging urinary peptidome. Despite the recently published age-associated plasma decrease of apelin, expression of the peptide and its receptor was increased in the kidneys of 24 months old mice. Twenty-eight days treatment with apelin significantly modified the urinary peptidome of 3 and 24 months old mice towards a signature suggesting more advanced age at 3 months, and a younger age at 24 months. The latter was accompanied by a decreased staining of collagen (Sirius red staining) in 24 months old apelin-treated mice, without changing aging-induced glomerular hypertrophy. In addition, apelin was without effect on aging-induced renal autophagy, apoptosis, inflammation and reduced renal function. In conclusion, treatment of aged mice with apelin had a limited effect on kidney lesions although modifying the urinary peptidome towards a younger signature. This supports evidence of apelin inducing more general beneficial effects on other aging organs, muscles in particular, as recently shown for sarcopenia, markers of which end up via the glomerular filtration in urine.
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Affiliation(s)
- Claire Vinel
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France.,Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Joost P Schanstra
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France.,Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Franck Boizard
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France.,Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Ophélie Péreira
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France.,Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Johanna Auriau
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France.,Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Alizée Dortignac
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France.,Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Benjamin Breuil
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France.,Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Guylène Feuillet
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France.,Université Toulouse III Paul-Sabatier, Toulouse, France
| | | | | | - Philippe Valet
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France.,Université Toulouse III Paul-Sabatier, Toulouse, France
| | - Jean-Loup Bascands
- Institut National de la Sante et de la Recherche Medicale (INSERM), U1188 - Université de La Réunion, Saint-Denis, France
| | - Cédric Dray
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France. .,Université Toulouse III Paul-Sabatier, Toulouse, France.
| | - Colette Denis
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1048, Institut of Cardiovascular and Metabolic Disease, Toulouse, France. .,Université Toulouse III Paul-Sabatier, Toulouse, France.
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128
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Guan Y, Nakano D, Zhang Y, Li L, Tian Y, Nishiyama A. A mouse model of renal fibrosis to overcome the technical variability in ischaemia/reperfusion injury among operators. Sci Rep 2019; 9:10435. [PMID: 31320707 PMCID: PMC6639321 DOI: 10.1038/s41598-019-46994-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 07/08/2019] [Indexed: 12/16/2022] Open
Abstract
The ischaemia-reperfusion (I/R) model is a widely used model of acute kidney injury (AKI) and renal fibrosis. However, the ischaemia duration that is long enough to cause broad fibrosis shows that a high mortality rate and a short ischaemia duration does not cause fibrosis, resulting in a large variation in fibrosis progression in this experimental model. Inter-operator variation occurs for I/R injury severity because the I/R procedure is complex, which results in poor reproducibility of subsequent fibrosis in the model. In the present study, we developed a renal fibrosis model in which the fibrosis progression for 8 weeks is predictable within 8 days. Three operators independently performed I/R followed by uninephrectomy at day 7 in mice. The aim was to create a model that would show a blood urea nitrogen (BUN) level >100 mg/dL at day 8 after I/R (day 1 after uninephrectomy). Although the ischaemia duration to satisfy this BUN criterion differed among operators, the mice developed anaemia, polyuria, and fibrosis in a similar manner under the same BUN criterion with a low mortality rate. Interstitial fibrosis had developed at week 8, which was strongly correlated with the BUN at day 8. This protocol allows operators to adjust the ischaemia duration based on the BUN criterion and to separate mice into the desired number of groups based on the BUN to study interventions against renal fibrosis.
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Affiliation(s)
- Yu Guan
- Department of Pharmacology, Kagawa University Medical School, Kagawa, Japan.,Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Daisuke Nakano
- Department of Pharmacology, Kagawa University Medical School, Kagawa, Japan.
| | - Yifan Zhang
- Department of Pharmacology, Kagawa University Medical School, Kagawa, Japan.,Department of No.2 Orthopedics, Shijiazhuang City No.1 Hospital, Shijiazhuang, Hebei, China
| | - Lei Li
- Department of Pharmacology, Kagawa University Medical School, Kagawa, Japan
| | - Ye Tian
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Akira Nishiyama
- Department of Pharmacology, Kagawa University Medical School, Kagawa, Japan
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129
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Chevalier RL. Evolution, kidney development, and chronic kidney disease. Semin Cell Dev Biol 2019; 91:119-131. [PMID: 29857053 PMCID: PMC6281795 DOI: 10.1016/j.semcdb.2018.05.024] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 03/29/2018] [Accepted: 05/28/2018] [Indexed: 12/21/2022]
Abstract
There is a global epidemic of chronic kidney disease (CKD) characterized by a progressive loss of nephrons, ascribed in large part to a rising incidence of hypertension, metabolic syndrome, and type 2 diabetes mellitus. There is a ten-fold variation in nephron number at birth in the general population, and a 50% overall decrease in nephron number in the last decades of life. The vicious cycle of nephron loss stimulating hypertrophy by remaining nephrons and resulting in glomerulosclerosis has been regarded as maladaptive, and only partially responsive to angiotensin inhibition. Advances over the past century in kidney physiology, genetics, and development have elucidated many aspects of nephron formation, structure and function. Parallel advances have been achieved in evolutionary biology, with the emergence of evolutionary medicine, a discipline that promises to provide new insight into the treatment of chronic disease. This review provides a framework for understanding the origins of contemporary developmental nephrology, and recent progress in evolutionary biology. The establishment of evolutionary developmental biology (evo-devo), ecological developmental biology (eco-devo), and developmental origins of health and disease (DOHaD) followed the discovery of the hox gene family, the recognition of the contribution of cumulative environmental stressors to the changing phenotype over the life cycle, and mechanisms of epigenetic regulation. The maturation of evolutionary medicine has contributed to new investigative approaches to cardiovascular disease, cancer, and infectious disease, and promises the same for CKD. By incorporating these principles, developmental nephrology is ideally positioned to answer important questions regarding the fate of nephrons from embryo through senescence.
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Affiliation(s)
- Robert L Chevalier
- Department of Pediatrics, The University of Virginia, P.O. Box 800386, Charlottesville, VA, United States.
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130
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Wei SY, Pan SY, Li B, Chen YM, Lin SL. Rejuvenation: Turning back the clock of aging kidney. J Formos Med Assoc 2019; 119:898-906. [PMID: 31202499 DOI: 10.1016/j.jfma.2019.05.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 05/14/2019] [Accepted: 05/24/2019] [Indexed: 12/11/2022] Open
Abstract
Aging is inevitable in life. It is defined as impaired adaptive capacity to environmental or internal stresses with growing rates of disease and death. Aging is also an important risk factor for various kidney diseases such as acute kidney injury and chronic kidney disease. Patients older than 65 years have nearly 28% risk of failing recovery of kidney function when suffering from acute kidney injury. It is reported that more than a third of population aged 65 years and older have chronic kidney disease in Taiwan, and the occurrence of multiple age-related disorders is predicted to increase in parallel. Renal aging is a complex, multifactorial process characterized by many anatomical and functional changes. Several factors are involved in renal aging, such as loss of telomeres, cell cycle arrest, chronic inflammation, activation of renin-angiotensin system, decreased klotho expression, and development of tertiary lymphoid tissues. These changes can also be observed in many other different types of renal injury. Recent studies suggested that young blood may rejuvenate aged organs, including the kidneys. In order to develop new therapeutic strategies for renal aging, the mechanisms underlying renal aging and by which young blood can halt or reverse aging process warrants further study.
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Affiliation(s)
- Shi-Yao Wei
- Graduate Institute of Physiology, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Nephrology, Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Szu-Yu Pan
- Graduate Institute of Physiology, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan; Renal Division, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Bing Li
- Department of Nephrology, Second Affiliated Hospital of Harbin Medical University, Harbin, People's Republic of China
| | - Yung-Ming Chen
- Renal Division, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Shuei-Liong Lin
- Graduate Institute of Physiology, College of Medicine, National Taiwan University, Taipei, Taiwan; Renal Division, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan; Department of Integrated Diagnostics & Therapeutics, National Taiwan University Hospital, Taipei, Taiwan; Research Center for Developmental Biology and Regenerative Medicine, National Taiwan University, Taipei, Taiwan.
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131
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Moujaber O, Fishbein F, Omran N, Liang Y, Colmegna I, Presley JF, Stochaj U. Cellular senescence is associated with reorganization of the microtubule cytoskeleton. Cell Mol Life Sci 2019; 76:1169-1183. [PMID: 30599068 PMCID: PMC11105446 DOI: 10.1007/s00018-018-2999-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 11/12/2018] [Accepted: 12/12/2018] [Indexed: 12/13/2022]
Abstract
Senescent cells undergo structural and functional changes that affect essentially every aspect of cell physiology. To date, the impact of senescence on the cytoskeleton is poorly understood. This study evaluated the cytoskeleton in two independent cellular models of kidney epithelium senescence. Our work identified multiple senescence-related alterations that impact microtubules and filamentous actin during interphase. Both filamentous systems reorganized profoundly when cells became senescent. As such, microtubule stability increased during senescence, making these filaments more resistant to disassembly in the cold or by nocodazole. Microtubule stabilization was accompanied by enhanced α-tubulin acetylation on lysine 40 and the depletion of HDAC6, the major deacetylase for α-tubulin lysine 40. Rho-associated kinase Rock1 is an upstream regulator that modulates key properties of the cytoplasmic cytoskeleton. Our research shows that Rock1 concentrations were reduced significantly in senescent cells, and we revealed a mechanistic link between microtubule stabilization and Rock1 depletion. Thus, Rock1 overexpression partially restored the cold sensitivity of microtubules in cells undergoing senescence. Additional components relevant to microtubules were affected by senescence. Specifically, we uncovered the senescence-related loss of the microtubule nucleating protein γ-tubulin and aberrant formation of γ-tubulin foci. Concomitant with the alterations of microtubule and actin filaments, senescent cells displayed functional changes. In particular, cell migration was impaired significantly in senescent cells. Taken together, our study identified new senescence-associated deficiencies of the microtubule and actin cytoskeleton, provided insights into the underlying molecular mechanisms and demonstrated functional consequences that are important to the physiology and function of renal epithelial cells.
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Affiliation(s)
- Ossama Moujaber
- Department of Physiology, McGill University, Montreal, Canada
| | | | - Nawal Omran
- Department of Physiology, McGill University, Montreal, Canada
| | - Yue Liang
- Department of Physiology, McGill University, Montreal, Canada
| | - Inés Colmegna
- Department of Rheumatology, McGill University, Montreal, Canada
| | - John F Presley
- Department of Anatomy and Cell Biology, McGill University, Montreal, Canada
| | - Ursula Stochaj
- Department of Physiology, McGill University, Montreal, Canada.
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132
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Baisantry A, Berkenkamp B, Rong S, Bhayadia R, Sörensen-Zender I, Schmitt R, Melk A. Time-dependent p53 inhibition determines senescence attenuation and long-term outcome after renal ischemia-reperfusion. Am J Physiol Renal Physiol 2019; 316:F1124-F1132. [PMID: 30785352 DOI: 10.1152/ajprenal.00333.2018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Inhibition of p53 has been shown to be an efficient strategy for ameliorating kidney ischemia-reperfusion (I/R) injury in experimental models. The therapeutic value of p53 siRNA-based inhibition for I/R in renal transplantation is currently being evaluated in clinical studies. While the major rationale for these studies is the suppression of proapoptotic properties, there are more equally important injury response pathways regulated by p53. A p53-dependent pathway shown to be crucial for renal long-term outcome is cellular senescence. In this study, we tested the hypothesis that p53 siRNA reduces I/R-induced senescence and thereby improves kidney outcome. By comparing the impact of different treatment durations in a mouse model of renal I/R, we found that repetitive administration of p53 siRNA during the first 14 days after I/R reduced the senescence load and ameliorated the postischemic phenotype. Prolonged application of p53 siRNA over a 26-day period after I/R, however, did not provide any additional benefit for senescence reduction but reversed some of the renoprotective effects of the early treatment. These data suggest a time-dependent role of p53 activity supporting the current therapeutic concept of a short-term inhibition, while advocating against a prolonged treatment after I/R.
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Affiliation(s)
- Arpita Baisantry
- Department of Pediatric Kidney, Liver, and Metabolic Diseases, Hannover Medical School , Hannover , Germany
| | - Birgit Berkenkamp
- Department of Pediatric Kidney, Liver, and Metabolic Diseases, Hannover Medical School , Hannover , Germany
| | - Song Rong
- Department of Nephrology and Hypertension, Hannover Medical School , Hannover , Germany
| | - Raj Bhayadia
- Department of Pediatric Kidney, Liver, and Metabolic Diseases, Hannover Medical School , Hannover , Germany
| | - Inga Sörensen-Zender
- Department of Nephrology and Hypertension, Hannover Medical School , Hannover , Germany
| | - Roland Schmitt
- Department of Nephrology and Hypertension, Hannover Medical School , Hannover , Germany
| | - Anette Melk
- Department of Pediatric Kidney, Liver, and Metabolic Diseases, Hannover Medical School , Hannover , Germany
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133
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Autophagy in Chronic Kidney Diseases. Cells 2019; 8:cells8010061. [PMID: 30654583 PMCID: PMC6357204 DOI: 10.3390/cells8010061] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 01/08/2019] [Accepted: 01/09/2019] [Indexed: 12/18/2022] Open
Abstract
Autophagy is a cellular recycling process involving self-degradation and reconstruction of damaged organelles and proteins. Current evidence suggests that autophagy is critical in kidney physiology and homeostasis. In clinical studies, autophagy activations and inhibitions are linked to acute kidney injuries, chronic kidney diseases, diabetic nephropathies, and polycystic kidney diseases. Oxidative stress, inflammation, and mitochondrial dysfunction, which are implicated as important mechanisms underlying many kidney diseases, modulate the autophagy activation and inhibition and lead to cellular recycling dysfunction. Abnormal autophagy function can induce loss of podocytes, damage proximal tubular cells, and glomerulosclerosis. After acute kidney injuries, activated autophagy protects tubular cells from apoptosis and enhances cellular regeneration. Patients with chronic kidney diseases have impaired autophagy that cannot be reversed by hemodialysis. Multiple nephrotoxic medications also alter the autophagy signaling, by which the mechanistic insights of the drugs are revealed, thus providing the unique opportunity to manage the nephrotoxicity of these drugs. In this review, we summarize the current concepts of autophagy and its molecular aspects in different kidney cells pathophysiology. We also discuss the current evidence of autophagy in acute kidney injury, chronic kidney disease, toxic effects of drugs, and aging kidneys. In addition, we examine therapeutic possibilities targeting the autophagy system in kidney diseases.
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134
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Ostrakhovitch EA, Tabibzadeh S. Homocysteine and age-associated disorders. Ageing Res Rev 2019; 49:144-164. [PMID: 30391754 DOI: 10.1016/j.arr.2018.10.010] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 09/30/2018] [Accepted: 10/25/2018] [Indexed: 12/26/2022]
Abstract
There are numerous theories of aging, a process which still seems inevitable. Aging leads to cancer and multi-systemic disorders as well as chronic diseases. Decline in age- associated cellular functions leads to neurodegeneration and cognitive decline that affect the quality of life. Accumulation of damage, mutations, metabolic changes, failure in cellular energy production and clearance of altered proteins over the lifetime, and hyperhomocysteinemia, ultimately result in tissue degeneration. The decline in renal functions, nutritional deficiencies, deregulation of methionine cycle and deficiencies of homocysteine remethylation and transsulfuration cofactors cause elevation of homocysteine with advancing age. Abnormal accumulation of homocysteine is a risk factor of cardiovascular, neurodegenerative and chronic kidney disease. Moreover, approximately 50% of people, aged 65 years and older develop hypertension and are at a high risk of developing cardiovascular insufficiency and incurable neurodegenerative disorders. Increasing evidence suggests inverse relation between cognitive impairment, cerebrovascular and cardiovascular events and renal function. Oxidative stress, inactivation of nitric oxide synthase pathway and mitochondria dysfunction associated with impaired homocysteine metabolism lead to aging tissue degeneration. In this review, we examine impact of high homocysteine levels on changes observed with aging that contribute to development and progression of age associated diseases.
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Affiliation(s)
- E A Ostrakhovitch
- Frontiers in Bioscience Research Institute in Aging and Cancer, Irvine, CA, USA.
| | - S Tabibzadeh
- Frontiers in Bioscience Research Institute in Aging and Cancer, Irvine, CA, USA.
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135
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The role of STAT3/mTOR-regulated autophagy in angiotensin II-induced senescence of human glomerular mesangial cells. Cell Signal 2019; 53:327-338. [DOI: 10.1016/j.cellsig.2018.10.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/19/2018] [Accepted: 10/29/2018] [Indexed: 12/20/2022]
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136
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Liu B, Tu Y, He W, Liu Y, Wu W, Fang Q, Tang H, Tang R, Wan Z, Sun W, Wan Y. Hyperoside attenuates renal aging and injury induced by D-galactose via inhibiting AMPK-ULK1 signaling-mediated autophagy. Aging (Albany NY) 2018; 10:4197-4212. [PMID: 30585174 PMCID: PMC6326678 DOI: 10.18632/aging.101723] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 12/12/2018] [Indexed: 12/17/2022]
Abstract
The kidney is a typical organ undergoing age and injury. Hyperoside is reported to be useful for preventing aging induced by D-galactose (D-gal). However, therapeutic mechanisms remain unclear. We thereby aimed to verify whether hyperoside, compared to vitamin E (VE), could alleviate renal aging and injury by regulating autophagic activity and its related signaling pathways. In vivo, rats were administered with either hyperoside or VE after renal aging modeling induced by D-gal. Changes in renal aging and injury markers, autophagic activity and AMPK-ULK1 signaling pathway in the kidneys were analysed. In vitro, the NRK-52E cells exposed to D-gal were used to investigate regulative actions of hyperoside and VE on cell viability, renal tubular cellular aging markers, autophagic activity and its related signaling pathways by histomorphometry, immunohistochemistry, immunofluorescence, lentiviral transfection and Western blot. Aging and injury in the kidneys and renal tubular cells induced by D-gal were ameliorated by hyperoside and VE. Hyperoside and VE inhibited autophagic activity through mTOR-independent and AMPK-ULK1 signaling pathways. Hyperoside, as a component of phytomedicine similar to VE, attenuated renal aging and injury induced by D-gal via inhibiting AMPK-ULK1-mediated autophagy. This study provides the first evidence that hyperoside contributes to the prevention of age-associated renal injury.
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Affiliation(s)
- Buhui Liu
- Department of Traditional Chinese Medicine, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210008, China
- Department of Nephrology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
- Equal contribution
| | - Yue Tu
- Department of TCM Health Preservation, Second Clinic Medical School, Nanjing University of Chinese Medicine, Nanjing 210023, China
- Equal contribution
| | - Weiming He
- Department of Nephrology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Yinglu Liu
- Department of Traditional Chinese Medicine, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing 210008, China
| | - Wei Wu
- Department of Traditional Chinese Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Qijun Fang
- Department of Traditional Chinese Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Haitao Tang
- Institute of Huangkui, Suzhong Pharmaceutical Group Co., Ltd., Taizhou 225500, China
| | - Renmao Tang
- Institute of Huangkui, Suzhong Pharmaceutical Group Co., Ltd., Taizhou 225500, China
| | - Ziyue Wan
- Department of Social Work, Meiji Gakuin University, Tokyo 108-8636, Japan
| | - Wei Sun
- Department of Nephrology, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, China
| | - Yigang Wan
- Department of Traditional Chinese Medicine, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
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137
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Corsonello A, Tap L, Roller-Wirnsberger R, Wirnsberger G, Zoccali C, Kostka T, Guligowska A, Mattace-Raso F, Gil P, Fuentes LG, Meltzer I, Yehoshua I, Formiga-Perez F, Moreno-González R, Weingart C, Freiberger E, Ärnlöv J, Carlsson AC, Bustacchini S, Lattanzio F. Design and methodology of the screening for CKD among older patients across Europe (SCOPE) study: a multicenter cohort observational study. BMC Nephrol 2018; 19:260. [PMID: 30309342 PMCID: PMC6180570 DOI: 10.1186/s12882-018-1030-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 08/31/2018] [Indexed: 12/25/2022] Open
Abstract
Background Decline of renal function is common in older persons and the prevalence of chronic kidney disease (CKD) is rising with ageing. CKD affects different outcomes relevant to older persons, additionally to morbidity and mortality which makes CKD a relevant health burden in this population. Still, accurate laboratory measurement of kidney function is under debate, since current creatinine-based equations have a certain degree of inaccuracy when used in the older population. The aims of the study are as follows: to assess kidney function in a cohort of 75+ older persons using existing methodologies for CKD screening; to investigate existing and innovative biomarkers of CKD in this cohort, and to align laboratory and biomarker results with medical and functional data obtained from this cohort. The study was registered at ClinicalTrials.gov, identifier NCT02691546, February 25th 2016. Methods/design An observational, multinational, multicenter, prospective cohort study in community dwelling persons aged 75 years and over, visiting the outpatient clinics of participating institutions. The study will enroll 2450 participants and is carried out in Austria, Germany, Israel, Italy, the Netherlands, Poland and Spain. Participants will undergo clinical and laboratory evaluations at baseline and after 12 and 24 months- follow-up. Clinical evaluation also includes a comprehensive geriatric assessment (CGA). Local laboratory will be used for ‘basic’ parameters (including serum creatinine and albumin-to-creatinine ratio), whereas biomarker assessment will be conducted centrally. An intermediate telephone follow-up will be carried out at 6 and 18 months. Discussion Combining the use of CGA and the investigation of novel and existing independent biomarkers within the SCOPE study will help to provide evidence in the development of European guidelines and recommendations in the screening and management of CKD in older people. Trial registration This study was registered prospectively on the 25th February 2016 at clinicaltrials.gov (NCT02691546).
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Affiliation(s)
- Andrea Corsonello
- Italian National Research Center on Aging (INRCA), Ancona, Fermo and Cosenza, Italy
| | - Lisanne Tap
- Section of Geriatric Medicine, Department of Internal Medicine, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Regina Roller-Wirnsberger
- Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, 8036, Graz, Austria.
| | - Gerhard Wirnsberger
- Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 15, 8036, Graz, Austria
| | - Carmine Zoccali
- CNR-IFC, Clinical Epidemiology and Pathophysiology of Hypertension and Renal Diseases, Ospedali Riuniti, Reggio Calabria, Italy
| | - Tomasz Kostka
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, Lodz, Poland
| | - Agnieszka Guligowska
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, Lodz, Poland
| | - Francesco Mattace-Raso
- Section of Geriatric Medicine, Department of Internal Medicine, Erasmus University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Pedro Gil
- Department of Geriatric Medicine, Hospital Clinico San Carlos, Madrid, Spain
| | | | - Itshak Meltzer
- The Recanati School for Community Health Professions at the faculty of Health Sciences, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Ilan Yehoshua
- Maccabi Healthcare Services Southern Region, Tel Aviv, Israel
| | - Francesc Formiga-Perez
- Geriatric Unit, Internal Medicine Department and Nephrology Department, Bellvitge University Hospital - IDIBELL - L'Hospitalet de Llobregat, Barcelona, Spain
| | - Rafael Moreno-González
- Geriatric Unit, Internal Medicine Department and Nephrology Department, Bellvitge University Hospital - IDIBELL - L'Hospitalet de Llobregat, Barcelona, Spain
| | - Christian Weingart
- Department of General Internal Medicine and Geriatrics, Krankenhaus Barmherzige Brüder Regensburg and Institute for Biomedicine of Aging, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ellen Freiberger
- Department of General Internal Medicine and Geriatrics, Krankenhaus Barmherzige Brüder Regensburg and Institute for Biomedicine of Aging, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Johan Ärnlöv
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden.,School of Health and Social Studies, Dalarna University, Falun, Sweden.,Division of Family Medicine, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Axel C Carlsson
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden.,Division of Family Medicine, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Silvia Bustacchini
- Italian National Research Center on Aging (INRCA), Ancona, Fermo and Cosenza, Italy
| | - Fabrizia Lattanzio
- Italian National Research Center on Aging (INRCA), Ancona, Fermo and Cosenza, Italy
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138
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Yang C, Xue J, An N, Huang XJ, Wu ZH, Ye L, Li ZH, Wang SJ, Pan QJ, Liang D, Liu HF. Accelerated Glomerular Cell Senescence in Experimental Lupus Nephritis. Med Sci Monit 2018; 24:6882-6891. [PMID: 30265659 PMCID: PMC6180956 DOI: 10.12659/msm.909353] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The aim of this study was to determine whether senescence in renal glomeruli is involved in lupus nephritis (LN); the expression of senescence-associated β-galactosidase (SA-β-Gal) and its association with glomerular lesions were investigated in a mouse model of LN. MATERIAL AND METHODS Eighteen MRL/lpr mice with severe proteinuria were randomly divided into 2 equal groups and intraperitoneally injected with dexamethasone (DEX) or saline; 4 age-matched mice with mild proteinuria served as controls. Serum creatinine and urinary protein levels were analyzed, and kidney histological changes were observed by periodic acid-Schiff and Sirius Red staining. SA-β-Gal was detected via histochemistry. Glomerular expression of collagen IV, α-SMA, and nephrin was analyzed by immunohistochemistry, and glomerular complement C3 deposition was tested by immunofluorescence. The relationships between SA-β-Gal expression and renal function or glomerular lesion markers were determined by Spearman's correlation analysis. RESULTS Mice with severe proteinuria exhibited glomerular segmental sclerosis and endothelial cell proliferation. DEX administration suppressed these lesions but had no significant effect on 24-hour urinary protein levels. The elevated glomerular expression of SA-β-Gal in proteinuric mice was attenuated by DEX treatment. In addition, DEX treatment markedly downregulated glomerular C3 deposition and collagen IV and α-SMA expression, while significantly increasing nephrin expression. Furthermore, SA-β-Gal expression was positively correlated with urinary protein levels and expression of α-SMA. CONCLUSIONS Accelerated senescence of glomerular cells may contribute to glomerular injury in LN.
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Affiliation(s)
- Chen Yang
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Jing Xue
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Ning An
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Xi-Jie Huang
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Zhi-Hong Wu
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Lin Ye
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Zhi-Hang Li
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Shu-Jun Wang
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Qing-Jun Pan
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Dong Liang
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
| | - Hua-Feng Liu
- Key Laboratory of Prevention and Management of Chronic Kidney Disease of Zhanjiang City, Institute of Nephrology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China (mainland)
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139
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Sato Y, Yanagita M. Immune cells and inflammation in AKI to CKD progression. Am J Physiol Renal Physiol 2018; 315:F1501-F1512. [PMID: 30156114 DOI: 10.1152/ajprenal.00195.2018] [Citation(s) in RCA: 156] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Acute kidney injury (AKI) is a common clinical state resulting from pathogenic conditions such as ischemic and toxic insults. The pathophysiology of AKI shares common pathogenic denominators including cell death/injury, inflammation, and fibrosis, regardless of the initiating insults. Recent clinical studies have shown that a single episode of AKI can lead to subsequent chronic kidney disease (CKD). Although the involvement of multiple types of cells in the pathophysiology of AKI is becoming increasingly clear, the precise mechanisms for this "AKI to CKD progression" are still unknown, and no drug has been shown to halt this progression. An increasing number of epidemiological studies have also revealed that the presence of aging greatly increases the risk of AKI to CKD progression, and chronic inflammation is increasingly recognized as an important determinant factor for this progression. In this review article, we first describe the current understanding of the pathophysiology of AKI to CKD progression based on multiple types of cells. In particular, we will highlight the recent findings in regard to the mechanisms for chronic inflammation after AKI. Subsequently, we will focus on the mechanisms responsible for the increased risk of AKI to CKD progression in the elderly. Finally, we highlight our recent finding of age-dependent tertiary lymphoid tissue formation and its roles in AKI to CKD progression and speculate on the potential therapeutic opportunities that come from targeting aberrant inflammation after AKI.
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Affiliation(s)
- Yuki Sato
- Medical Innovation Center TMK Project, Graduate School of Medicine, Kyoto University , Kyoto , Japan.,Department of Nephrology, Graduate School of Medicine, Kyoto University , Kyoto , Japan
| | - Motoko Yanagita
- Department of Nephrology, Graduate School of Medicine, Kyoto University , Kyoto , Japan
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140
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Hamatani H, Eng DG, Kaverina NV, Gross KW, Freedman BS, Pippin JW, Shankland SJ. Lineage tracing aged mouse kidneys shows lower number of cells of renin lineage and reduced responsiveness to RAAS inhibition. Am J Physiol Renal Physiol 2018; 315:F97-F109. [PMID: 29412700 PMCID: PMC6087792 DOI: 10.1152/ajprenal.00570.2017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/05/2018] [Accepted: 02/05/2018] [Indexed: 11/22/2022] Open
Abstract
Blocking the renin-angiotensin-aldosterone system (RAAS) remains a mainstay of therapy in hypertension and glomerular diseases. With the population aging, our understanding of renin-producing cells in kidneys with advanced age is more critical than ever. Accordingly, we administered tamoxifen to Ren1cCreERxRs-tdTomato-R mice to permanently fate map cells of renin lineage (CoRL). The number of Td-tomato-labeled CoRL decreased significantly in aged mice (24 mo of age) compared with young mice (3.5 mo of age), as did renin mRNA levels. To determine whether aged CoRL responded less to RAAS blockade, enalapril and losartan were administered over 25 days following uninephrectomy in young and aged mice. The number of CoRL increased in young mice in response to enalapril and losartan. However, this was significantly lower in aged mice compared with young mice due to limited proliferation, but not recruitment. Gene expression analysis of laser-captured CoRL showed a substantial increase in mRNA levels for proapoptotic and prosenescence genes, and an increase in a major prosenescence protein on immunostaining. These results show that CoRL are lower in aged mice and do not respond to RAAS inhibition to the same extent as young mice.
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Affiliation(s)
- Hiroko Hamatani
- Division of Nephrology, University of Washington School of Medicine , Seattle, Washington
| | - Diana G Eng
- Division of Nephrology, University of Washington School of Medicine , Seattle, Washington
| | - Natalya V Kaverina
- Division of Nephrology, University of Washington School of Medicine , Seattle, Washington
| | - Kenneth W Gross
- Department of Molecular and Cellular Biology, Roswell Park Cancer Institute , Buffalo, New York
| | - Benjamin S Freedman
- Division of Nephrology, University of Washington School of Medicine , Seattle, Washington
| | - Jeffrey W Pippin
- Division of Nephrology, University of Washington School of Medicine , Seattle, Washington
| | - Stuart J Shankland
- Division of Nephrology, University of Washington School of Medicine , Seattle, Washington
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141
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Liu D, Lun L, Huang Q, Ning Y, Zhang Y, Wang L, Yin Z, Zhang Y, Xia L, Yin Z, Fu B, Cai G, Sun X, Chen X. Youthful systemic milieu alleviates renal ischemia-reperfusion injury in elderly mice. Kidney Int 2018; 94:268-279. [PMID: 29935950 DOI: 10.1016/j.kint.2018.03.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/28/2018] [Accepted: 03/22/2018] [Indexed: 01/16/2023]
Abstract
The incidence of acute kidney injury (AKI) is high in elderly people, and is difficult to prevent and treat. One of its major causes is renal ischemia-reperfusion injury (IRI). A young systemic environment may prevent the senescence of old organs. However, it is unknown whether a young milieu may reduce renal IRI in the elderly. To examine this question, bilateral renal IRI was induced in old (24 months) mice three weeks after parabiosis model establishment. At 24 hours after IRI, compared to old wild-type mice, the old mice with IRI had significantly damaged renal histology, decreased renal function, increased oxidative stress, inflammation, and apoptosis. However, there was no increase in autophagy. Compared to old mice with IRI, old-old parabiosis mice with IRI did not show differences in renal histological damage, oxidative stress, inflammation, apoptosis, or autophagy, but did exhibit improved renal function. Compared to the old-old parabiosis mice with IRI, the old mice with IRI in the young (12 week)-old parabiosis showed less renal histological injury and better renal function. Renal oxidative stress, inflammation, and apoptosis were significantly decreased, and autophagy was significantly increased. Thus, a youthful systemic milieu may decrease oxidative stress, inflammation, and apoptosis, and increase autophagy in old mice with IRI. These effects ameliorated IRI injuries in old mice. Our study provides new ideas for effectively preventing and treating AKI in the elderly.
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Affiliation(s)
- Dong Liu
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China; Department of Nephrology, Air Force General Hospital, Chinese PLA, Beijing, China
| | - Lide Lun
- Department of Nephrology, Air Force General Hospital, Chinese PLA, Beijing, China
| | - Qi Huang
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Yichun Ning
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China; Department of Nephrology, Zhongshan Hospital, Fudan University, Kidney and Dialysis Institute of Shanghai, Kidney and Blood Purification Laboratory of Shanghai, Shanghai, China
| | - Ying Zhang
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Linna Wang
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Zhiwei Yin
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Yinping Zhang
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Lihua Xia
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Zhong Yin
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Bo Fu
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Guangyan Cai
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Xuefeng Sun
- Department of Nephrology, Chinese PLA General Hospital, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for 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 for Kidney Diseases, Beijing, China.
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142
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Dexmedetomidine attenuates renal fibrosis via α2-adrenergic receptor-dependent inhibition of cellular senescence after renal ischemia/reperfusion. Life Sci 2018; 207:1-8. [PMID: 29729264 DOI: 10.1016/j.lfs.2018.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/23/2018] [Accepted: 05/02/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND Renal ischemia/reperfusion (IR) can induce acute kidney injury (AKI), which often progresses to chronic kidney disease (CKD). Dexmedetomidine (Dex), a highly selective α2 adrenergic receptor (α2-AR) agonist, protects against acute renal IR-induced injury. However, the effects of Dex on the transition of AKI to CKD remain unclear. Therefore, we investigated the mechanisms of Dex on renal fibrosis. METHODS Adult male C57BL/6 mice were pretreated with Dex, a specific α2A-adrenergic receptor (AR) blocker (BRL-44408), or a cell senescence inhibitor (rapamycin) in a surgical bilateral renal IR model. The diagnoses of AKI and chronic renal fibrosis were performed by histopathological staining and western blotting. Histopathological changes, cell senescence, tubular fibrotic markers, and the expression of inflammatory factors were studied. RESULTS Pretreatment with Dex alleviated renal IR-induced AKI and chronic tubulointerstitial fibrosis in later stages. Similar to the effects of rapamycin, pretreatment with Dex also decreased the number of senescent tubular cells and weakened the protein expression of senescence-associated markers such as p53, p21, and p16. Furthermore, the expression of inflammatory markers was also decreased in Dex-treated IR mice; and these protective effects of Dex could be abolished by treatment with the specific α2A-AR blocker, BRL-44408. CONCLUSIONS The administration of a single dose of Dex protects against AKI and CKD. Dex inhibits tubular cell senescence and inflammation as well as improves renal fibrosis to moderate the AKI-to-CKD transition. The renal protective potential of Dex may provide a novel treatment strategy for high-risk renal injury patients.
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Chen L, Yang T, Lu DW, Zhao H, Feng YL, Chen H, Chen DQ, Vaziri ND, Zhao YY. Central role of dysregulation of TGF-β/Smad in CKD progression and potential targets of its treatment. Biomed Pharmacother 2018. [DOI: 10.1016/j.biopha.2018.02.090] [Citation(s) in RCA: 238] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Susnik N, Sen P, Melk A, Schmitt R. Aging, Cellular Senescence, and Kidney Fibrosis. CURRENT PATHOBIOLOGY REPORTS 2017. [DOI: 10.1007/s40139-017-0143-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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